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RE: Ginseng and Diabetes

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I am a member of the American Botanical Society and have an alternative health

practice. To the best of my knowledge, Goldenseal is not used to treat diabetes

or the data is so new it is probably unreliable. Several years of studies are

usually necessary before ethical claims can be made and dosage recommendations

are defined. Ginseng and Goldenseal have many similarities and origins so it is

very possible it may be a real consideration in the future. Ginseng however, has

shown to have a substantial amount of data supporting it usage for lowering

blood sugar in type 2 diabetes. Here is some very good info.

 

 

Asian Ginseng

 

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Panax ginseng

by Steven Foster

Ginseng, Panax ginseng C. A. Meyer, is the most famous of all Asian medicinal

plants. Used in China for over 2,000 years, numerous scientific studies over the

past 40 years have concentrated on the chemistry, pharmacology, and clinical

aspects of ginseng use. Much of the research has provided a scientific basis for

the traditional claims for ginseng use.

Origins

A member of the ginseng family (Araliaceae), the genus Panax contains about six

species native to eastern Asia and two native to eastern North America.

Confusion in taxonomic interpretation has resulted from use of P. pseudo-ginseng

as a synonym for Panax ginseng (L. H. Bailey et al., 1976; Tyler, 1993). Panax

schin-seng Nees is also a synonym for Panax ginseng (H. L. Li, 1942). The

confusion may arise in part from the fact that T. F. L. Nees had, in 1833,

expressly included the earlier and legitimate P. pseudo-ginseng under his P.

schin-seng. According to S. A. Graham (1966), P. schin-seng was superfluous when

published, thus illegitimate. The earliest legitimate botanical name is P.

ginseng, first used by C.A. Meyer (1843). It is recognized as a distinct entity

from P. pseudo-ginseng in recent Chinese taxonomic treatments on the genus

Panax. Ho and Tseng (1978) recognize three Chinese species of Panax (P. ginseng,

P. pseudo-ginseng, and P. zingiberensis). They list five varieties under P.

pseudo-ginseng.

Panax derives from Greek roots, pan meaning " all, " and akos, " cure, " referring

to the " cure all " or " panacea " attributes of the root's healthful virtues.

" Ginseng, " " jenseng, " " schin-seng, " or " ren-shen " (various transliterations of

the same Chinese ideograms), means " essence of the earth in the form of a man "

(Graham, 1966). S.Y. Hu (1976) states that seng is a term employed by Chinese

medicinal root gatherers for fleshy roots used as tonics. Seng is preceded by

modifiers to denote the source material or medicinal property (such as " bitter

seng, " " black seng, " " Mingtang seng, " prince seng " ). All species of Panax do not

produce seng and all seng-producing plants are not in the genus Panax. S.Y. Hu

(1979) uses this metaphor, " A horse is a mammal, but not all mammals are horses.

Likewise, ginseng is a Seng but not all sengs in Chinese medicine are ginseng. "

She documents 62 species of " seng-producing " plants in 40 genera of 20 botanical

families.

History

According to S.Y. Hu (1977a), the earliest written account of ginseng is from

Shen Nong Ben Cao Jing, attributed to the Divine Plowman Shen-Nong, compiled in

the late Han Dynasty (approx. the first century A.D.). The short account of 44

words included the name ginseng, two synonyms, taste and property, habitat, and

medicinal uses of ginseng (S. Y. Hu, 1977a). In her translation of the account,

S. Y. Hu (1977a, p. 289) writes, " It is used for repairing the five viscera,

quietening the spirit, curbing the emotion, stopping agitation, removing noxious

influence, brightening the eyes, enlightening the mind and increasing the

wisdom. Continuous use leads one to longevity with light weight. "

In the1596 classic of the Chinese materia medica Li Shi-zhen's Ben Cao Gang Mu,

ginseng is listed in the superior class of herbs. Small amounts were said to

develop light weight while improving vitality (S. Y. Hu, 1976).

The first description of the plant by a Westerner was provided by Pere Jartoux,

a Jesuit missionary stationed in Beijing. His observations, made in 1709,

include uses, description, and habitat, plus historical and personal notes. In

1714 Jartoux's account was published in English.

" Nobody can imagine that the Chinese and Tartars would set so high a value on

this root, if it did not constantly produce a good effect. Those that are in

health often make use of it, to render themselves more vigorous and strong; and

I am persuaded that it would prove an excellent medicine in the hands of any

European who understands pharmacy, if he had but a sufficient quantity of it to

make such trials as are necessary, to examine the nature of it chemically, and

to apply it in a proper quantity, according to the nature of the disease for

which it may be beneficial " (Jartoux, 1714).

Nearly three centuries after those words were written, European, Japanese,

Chinese, Soviet, and, to a lesser extent, American researchers have examined the

chemical nature of Panax ginseng, as well as its benefits, in dozens of

chemical, pharmacological, and clinical studies.

According to the tenets of Traditional , the taste of Panax

ginseng is sweet-bitter, and it has a warming character. It is a tonic used to

increase strength, increase blood volume, promote life and appetite, quiet the

spirit, and give wisdom. It is used alone or in prescriptions for general

weakness, deficient qi (chi) patterns, anemia, lack of appetite, shortness of

breath with spontaneous perspiration, nervous agitation, forgetfulness, thirst,

and impotence (S. Y. Hu, 1976).

Current Usage

Pharmacological and clinical studies conducted over the past 40 years focus on

radioprotective, antitumor, antiviral, and metabolic effects; antioxidant

activities; nervous system and reproductive performance; effects on cholesterol

and lipid metabolism, and endocrinological activity (Ng and Yeung, 1986; S.

Shibata et al., 1985).

Inconsistent results have been reported on interpretation of various studies

attempting to prove a scientific basis for the activity of ginseng products (W.

H. Lewis et al., 1983; W. H. Lewis, 1986). However, S. Shibata et al. (1985)

note that many of the inconsistencies are due mostly to different procedures in

preparation, resulting in extractions lacking in biologically active components.

Popular and scientific reviews of ginseng research may be predisposed to either

advocacy or skeptical negativity. Peer scrutiny, polarization of research

methods, and data interpretation, as evidenced by question and answer sessions

at international ginseng symposia, are common in ginseng research (Proc. 1st-4th

Int. Ginseng Symp. 1974-1984).

Studies by the Bulgarian researcher Petkov (1959, 1961, 1965, 1975; Petkov and

D. Staneva-Stoicheva, 1963, 1965) provided a pharmacological basis for a

stimulative effect of ginseng on the central nervous system, a hypotensive

effect, respiratory stimulation effect, blood sugar lowering activity, an

increase of reactivity of cerebrocortical cells in response to stress, increase

of erythrocyte and hemoglobin counts, and blood cholesterol lowering effects.

I. I. Brekhman, the pioneer Soviet researcher on the pharmacology of East Asian

ginseng family members, gave Soviet soldiers a ginseng extract or placebo, and

found that those who had the ginseng ran faster in a 3 km race. In another

experiment, radio operators receiving a ginseng extract made fewer mistakes and

transmitted text faster than those who took a placebo. The results suggested

that ginseng extracts improved stamina (ex. S. Shibata et al., 1985). Brekhman

attempted to confirm results of human trials with mice experiments, showing that

mice given ginseng extract swam longer than controls, suggesting an antifatigue

action. However, W. H. Lewis et al. (1983) showed no significant differences in

stamina or longevity between mice ingesting infusions of Panax ginseng (and

other species) compared with controls.

Ginseng contains a number of active constituents including saponins, essential

oil, phytosterol, carbohydrates and sugars, organic acids, nitrogenous

substances, amino acids and peptides, plus vitamins and minerals (Hou, 1977). At

least 22 saponins, known as ginsenosides (or panaxosides) have been isolated and

found to be the most active constituents (Hou, 1977). (See Hou, 1977; Shibata et

al., 1985 ; and Leung and Foster, 1996 for reviews of chemistry.)

A number of experiments by Saito et al. (1974a, 1974b) employed pure ginseng

saponins to determine the effect of ginseng components on normal and exhausted

mice to determine anti-fatigue activity and the effect on the central nervous

system. Results were opposite with different chemical fractions. Central nervous

system sedative, tranquilizing, and hypotensive actions were shown for the

ginseng saponin known as ginsenoside

Rb-1. CNS-stimulant, hypertensive, and antifatigue activity were shown for

ginsenoside Rg-1. While a CNS-stimulant at lower doses, higher doses of

ginsenoside Rg-1 had sedative action (Shibata et al., 1985). The conflicting

results of these studies are relative to type of preparation, route of

administration, dosage, and presence or absence of biologically active

compounds, among other factors.

Review of the pharmacological actions of pure ginseng saponins by S. Shibata et

al. (1985) indicates that ginsenoside Rb-1 has CNS-depressant activity, is

anticonvulsant, analgesic, antipyretic, antipsychotic, ulcer-protective,

inhibits conditioned avoidance response, has weak anti-inflammatory activity, an

antihaemolytic action, and increases gastrointestinal motility. In addition it

accelerates glycolysis, and accelerates serum and liver cholesterol, nuclear

RNA, and serum protein synthesis.

Ginsenoside Rg-1 has shown weak CNS-stimulant activity, anti-fatigue action,

aggravation of stress ulcer, and a slight increase in motor activity. In

behavioral tests it showed an acceleration of discrimination behavior in

pole-climbing tests and the Y-maze tests, a reversal learning response in the

Y-maze test, and one-trial passive avoidance learning using the step-down

method.

In experiments on embryonic cultures of animal nerve tissue, Saito (1980) found

that ginsenosides Rb-1 and Rd potentiated nerve growth factor. Nerve growth

factor is recognized as having an important role for the survival, regeneration,

and regulation of catecholaminergic neurons of brain and ganglion in adult

animals. While not providing definitive conclusions, the research suggested

further mechanisms and research directions for determining possible

pharmacological activity or applications of ginseng saponins.

Radioprotective studies involving the effects of ginseng extracts on X-ray

irradiated rodents protected animals from the damaging effect of radiation. This

dose-dependent effect included an increase in survival rate, prevention of

hemorrhage, recovery of spleen weight and DNA content, and recovery of white and

red blood cells and blood platelets. Both positive and negative results have

been reported from various ginsenoside fractions under varying conditions (Ng

and Yeung, 1986).

W. H. Lewis (1986) and Ng and Yueng (1986) report on various studies on

antitumor activity (ether, alcohol, and water extracts) of Panax ginseng. Ether

extracts showed weak positive activity in vitro on several types of cancer

cells, while water, alcohol, and ether extracts showed negative results in other

cancer cell types.

Antioxidants which decrease lipid peroxides associated with adult diseases,

including liver and eye disease, atherosclerosis, and nerve aging, have been

suggested as possible therapeutic agents in the development of geriatric drugs.

Studies have shown that certain glycoside fractions of processed (red) Panax

ginseng have antioxidant activity. In Traditional , decocting

ginseng in iron vessels is contraindicated. Ng and Yeung (1986) report on a

rational scientific explanation for this tradition in reviewing antioxidant

experiments with ginseng.

Hypoglycemic activity has been shown for Panax ginseng extractions suggesting a

preliminary scientific basis for the traditional use of ginseng in diabetes.

While research results are promising, W. H. Lewis (1986) notes that much more

research must be conducted before ginseng could be considered useful in the

treatment of diabetes mellitus.

Clinical trials have focused on the effect of red ginseng powder on diabetics,

excessive fat in the blood, performance and stress, postoperative gynecological

patients, and abuse of ginseng products (Ng and Yeung, 1986; W. H. Lewis, 1986;

S. Shibata et al., 1985; S. Fulder, 1980). Seven European clinical studies

involving extracts standardized to 4 percent and 7 percent of ginsenosides are

reviewed by Ng and Yeung (1986). Results included a shortening of time to react

to visual and auditory stimuli, increased respiratory quotient, increased

alertness, power of concentration, grasp of abstract concepts, and increases in

visual and motor coordination. While positive though conflicting results have

been reported in a number of research parameters, most researchers agree that

further clinical studies, especially those involving well-defined pure

constituents or assays of chemical content of batch materials used in crude root

preparations, are warranted.

Currently, the German government's Commission E allows Panax ginseng products

containing at least 1.5 percent ginsenosides, calculated as ginsenoside Rg1 to

be labeled for use as a tonic for invigoration and fortification during times of

fatigue and debility; for declining work capacity and concentration, as well as

during convalescence. Commission E notes that adverse reactions or

contraindications are not known for normal ginseng use. (Blumenthal et al.,

1996).

Summary

Oriental ginseng, Panax ginseng, has more than a 2,000-year-old history of

continuous safe use without reports of clear, predictable side effects when

taken in moderation. Shrouded in a mix of mystery and extravagant claims,

numerous scientific studies over the past 40 years have begun to establish a

chemical, pharmacological, and clinical basis for the traditional claims for

this well-known, but little understood herb. Quoted in Blumenthal (1987), N.R.

Farnsworth states, " Nothing is proven in pharmacology until different groups all

publish and agree. " To evaluate the existing scientific studies published in

Russian, Japanese, Chinese, German, English, and other languages is a nearly

impossible task, given the complexities of interpreting the data (Blumenthal,

1987). Though hundreds of studies have been conducted on ginseng, there is a

need for long-term controlled studies in humans, perhaps using unconventional or

novel models, that will help identify its benefits in a predictable and safe

manner (Blumenthal, 1987). Farnsworth and Bederka (1973) note however, " The use

of ginseng as a general body tonic would seem to be well founded. "

Ginseng root

Latin Name: Panax ginseng

Pharmacopeial Name: Ginseng radix

Other Names: Asian Ginseng, Chinese ginseng, Korean ginseng, true ginseng

Overview

Description

Chemistry and Pharmacology

Uses

Contraindications

Side Effects

Use During Pregnancy and Lactation

Interactions with Other Drugs

Dosage and Administration

References

Additional Resources

 

 

 

Overview

 

Ginseng is a slow-growing perennial herb native to the mountain forests of

northeastern China, Korea, and the far eastern regions of the Russian

Federation. In China, the natural range for ginseng extends from Hebei Province

to the three northeastern provinces of Liaoning, Jilin, and Heilongjiang. It is

cultivated extensively in China, Japan, Korea, and Russia. The Changbai mountain

range is reportedly the only area in China where wild ginseng still occurs

naturally (Bone, 1998; Foster and Chongxi, 1992; Leung and Foster, 1996; Melisch

et al., 1997; Wichtl and Bisset, 1994). It usually starts flowering at its

fourth year and the roots take four to six years to reach maturity. " White "

ginseng root (unprocessed) is sometimes bleached and then dried and " red "

ginseng is prepared from white ginseng by various processing methods, such as

steaming the fresh root before drying. There are many types and grades of

ginseng, depending on the origin, root maturity, parts of the root used, and

methods of raw material preparation or processing (Bradley, 1992; Foster and

Chongxi, 1992; Leung and Foster, 1996). In Russia, Panax ginseng comes mostly

from cultivation and partly from permitted or illegal harvest in the wild. Wild

ginseng is listed under protected status in the Russian Red Data Book and,

therefore, its harvest and trade is prohibited under Russian law. Under China's

nationally protected species schedule, ginseng is subject to the Protection

Category 1, comparable to its status in the Russian Federation (Melisch et al.,

1997). In China, North and South Korea, and Japan, P. ginseng comes from

cultivated sources (Yen, 1992).

Ginseng's genus name Panax is derived from the Greek pan (all) akos (cure),

meaning cure-all. The transliteration of the word gin (man) seng (essence) is

derived from the Chinese ideogram for " crystallization of the essence of the

earth in the form of a man " (Foster, 1991; Hu, 1976). Ginseng's therapeutic uses

were recorded in the oldest comprehensive materia medica, Shen Nong Ben Cao

Jing, written around two thousand years ago. In Asian medicine, dried ginseng is

used as a tonic to revitalize and replenish vital energy (qi). The usual effect

of replenishing qi is not to give an energy boost like that of caffeine or

amphetamine (Dharmananda, 1999). It is traditionally used as an aid during

convalescence and as a prophylactic to build resistance, reduce susceptibility

to illness, and promote health and longevity. Its activity appears to be based

on whole body effects, rather than particular organs or systems, which lends

support to the traditional view that ginseng is a tonic that can revitalize the

functioning of the organism as a whole. There is no equivalent concept or

treatment in Western conventional medicine. However, multivitamins are used in a

similar manner. In traditional Chinese medicine it is usually prescribed in

combination with other herbs and taken in an aqueous decoction dosage form

(Bone, 1998; Foster and Chongxi, 1992; Leung and Foster, 1996; Wichtl and

Bisset, 1994). Today, ginseng is official in the national pharmacopeias of

Austria, China, France, Germany, Japan, Switzerland, and Russia (Bradley, 1992;

DAB 10, 1994; JP XII, 1993; AB, 1981; Ph.Fr.X, 1990; Ph.Helv.VII, 1987; Tu,

1992; USSR X, 1973; Wichtl and Bisset, 1994). The Pharmacopoeia of the People's

Republic of China indicates its use for prostration with impending collapse

marked by cold limbs and faint pulse; diminished function of the spleen with

loss of appetite; diabetes caused by " internal heat " ; general weakness with

irritability and insomnia in chronic diseases; impotence or frigidity; and heart

failure and cardiogenic shock (Tu, 1992). [it should be noted that in

traditional Chinese medicine, the term " spleen " does not correlate to the

western anatomical definition of spleen but rather to the entire digestive

system, with regard to its functions of digestion, transport and distribution of

nutrients, blood flow, and reinforcement of vital energy (qi). " Diabetes caused

by internal heat " is a specific condition with symptoms including excessive

thirst and urination, and sometimes accompanied by excessive eating (Tu, 1992;

Yen, 1992).]

In Germany, ginseng is one of a few economically important herbal drugs listed

separately in the Foreign Trade Statistics. In 1992, Germany imported 174.6

tons, mainly from China and Hong Kong. A considerable amount of the roots are

value-added in Germany and then exported mostly to France, Italy, and Argentina

(Lange and Schippmann, 1997). Ginseng is official in the German Pharmacopoeia,

approved in the Commission E monographs, and used in geriatric remedies,

roborants (invigorating and strengthening medicines), and tonic preparations.

The Commission E specifies powdered root or tea infusions (BAnz, 1998; Bradley,

1992; DAB 10, 1994; Meyer-Buchtela, 1999; Wichtl and Bisset, 1994). In the

United States, it is used by itself and as a main ingredient in a wide range of

tonic, energy, and immunostimulant dietary supplements. It is also used

extensively in traditional Chinese medicine herbal teas and other fluid or solid

forms prescribed to patients by licensed acupuncturists and naturopathic

physicians.

During the past fifty years, numerous scientific studies of varying quality have

been published on ginseng (Foster and Chongxi, 1992). Modern human studies have

investigated its preventive effect on several kinds of cancer (Yun et al., 1993;

Yun and Choi, 1995, 1998), its effect on newly diagnosed non-insulin-dependent

diabetes mellitus patients (Sotaniemi et al., 1995), its long-term immunological

effect on HIV patients (Cho et al., 1994; Cho et al., 1997; Sankary, 1989), its

ability to treat " qi-deficiency " and blood-stasis syndrome of coronary heart

disease and angina pectoris (Jiang et al., 1992), its ability to treat

hepatotoxin-induced liver disease in the elderly (Zuin et al., 1987), its effect

on cell-mediated immune functions in healthy volunteers (Scaglione et al.,

1990), its ability to induce a higher immune response in vaccination against

influenza (Scaglione et al., 1996), its effect on blood pressure in patients

with hypertension (Han et al., 1998), its effect on alveolar macrophages from

patients suffering with chronic bronchitis (Scaglione et al., 1994), its ability

to treat severe chronic respiratory diseases (Gross et al., 1995), its use in

the treatment of functional fatigue (Le Gal et al., 1996), its ability to

improve quality-of-life in persons subjected to high stress (Caso Marasco et

al., 1996), its effect on psychomotor performance in healthy volunteers

(D'Angelo et al., 1986), its effect on physical performance during exercise

(Pieralisi et al., 1991), its ability to treat erectile dysfunction (Choi et

al., 1995), and its ability to treat male infertility (Salvati et al., 1996).

Some clinical trials have suggested the use of ginseng for fatigue and the

improvement of physical and mental performance (Dorling and Kirchdorfer, 1980;

Forgo et al., 1981). Ginseng has been studied for treatment of cerebrovascular

insufficiency (Quiroga and Imbriano, 1979; Quiroga, 1982), psychophysical

asthenia and depressive symptoms (Rosenfield, 1989), immunomodulation (Scaglione

et al., 1990; Scaglione et al., 1996). Trials have also reported favorable

results in treating post-menopausal symptoms (Reinold, 1990) and improving

athletic performance (Forgo and Kirchdorfer, 1981, 1982). A review in a popular

newsletter has raised questions regarding the design and results of some of

these studies (Schardt, 1999). Several recent trials have reported negative

results for improvement of performance during aerobic exercise (Allen et al.,

1998; Morris et al., 1996; Engels and Wirth, 1997; Cherdrungsi et al., 1995) and

in the secondary treatment of geriatric patients (Thommessen and Laake, 1996).

Many of the clinical studies published in the scientific literature have been

conducted on a proprietary extract of P. ginseng standardized to 4% total

ginsensenosides (G115®, Ginsana®, Pharmaton, Lugano, Switzerland). There have

been four studies conducted on G115 to measure the effect of ginseng on

endurance and vitality (Dorling and Kirchdorfer, 1980; Forgo et al., 1981; Gross

et al., 1995; Sandberg, 1980). Three studies have been conducted on

psychoasthenia (Mulz et al., 1990; Rosenfeld, 1989; Gianoli and Riebenfeld,

1984). Ten clinical trials have attempted to determine if ginseng affects

physical stress and psychomotor functions (Forgo and Kirchdorfer, 1981; Forgo

and Kirchdorfer, 1982; Forgo, 1983; Forgo and Schimert, 1985; Van Schepdael,

1993; Pujol et al., 1996; Engels and Wirth, 1997; Engels et al., 1996; Collomp

et al., 1996; D'Angelo et al., 1986). Two clinical trials have investigated

cerebral blood flow deficits (Quiroga and Imbriano, 1979; Quiroga, 1982). Two

studies on pharmacodynamics measured the immunomodulatory effects (Scaglione et

al., 1990; Scaglione et al., 1994), oxygen uptake (von Ardenne and Klemm, 1987),

doping substances in urine (Mulz and Degenring, 1989; Forgo, 1980), and serum

glucose, serum cholesterol, and serum triglyceride levels (Cheah, 1994).

One double-blind placebo-controlled study investigated the effect of ginseng on

newly diagnosed non-insulin-dependent diabetes mellitus (NIDDM) patients

(Sotaniemi et al., 1995). Thirty-six NIDDM patients (20 women and 16 men) were

recruited in five health centers and were treated for eight weeks. Patients were

randomized to ingest one tablet daily containing 0 (placebo), 100, or 200 mg

ginseng, presumably an extract, but the authors did not state the type of

preparation used in the study (manufactured by Dansk Droge, Copenhagen). Effects

on psychophysical tests, measurements of glucose balance, serum lipids,

aminoterminalpropeptide (PIINP) concentration, and body weight were tested.

Ginseng therapy elevated mood, improved psychophysical performance, and reduced

fasting blood glucose (FBG) and body weight. The 200 mg dose of ginseng improved

glycated hemoglobin, serum PIINP, and physical activity. The authors concluded

that ginseng may be a useful therapeutic adjunct in the management of NIDDM, but

because the active material was not adequately identified, it is difficult to

draw meaningful conclusions from this study.

To test for possible anticancer effects, one case-controlled study, conducted at

the Laboratory of Experimental Pathology at the Korea Cancer Center Hospital

with 1,987 pairs of subjects, investigated the preventive effect of ginseng

intake against various human cancers (Yun and Choi, 1995). In this study, those

participants ingesting ginseng had a decreased risk for cancer compared with

non-users. A decrease in risk with increased frequency and duration of ginseng

ingestion was reported, showing a dose-response relationship. The preventive

effect was reported with the ingestion of fresh undried root extract, white

dried root extract, powdered white dried root, and red steamed root. Other

ginseng dosage forms tested in this study did not show a decrease in cancer risk

including fresh sliced root, fresh root juice, and white root tea. The authors

concluded that their findings support the view that patients who take ginseng

have a decreased risk for most cancers compared with those who do not.

In a subsequent prospective study the non-organ specific cancer preventive

effects of ginseng were investigated in 4,634 people over 40 years old, residing

in ginseng production areas, from August, 1987 to December, 1992 (Yun and Choi,

1998). Among ginseng preparations, fresh ginseng extract consumers were

associated with a significantly decreased risk of gastric cancer. The authors

concluded that their results strongly suggest that ginseng has a non-organ

specific preventive effect against cancer, providing support for the previous

case-control studies.

The approved modern therapeutic applications for ginseng appear to be generally

supportable based on its history of use in well established systems of

traditional medicine, extensive phytochemical investigations, pharmacological

studies in animals, and human clinical studies. However, recent studies do not

support results from earlier research. The World Health Organization (WHO) has

issued a monograph reviewing standards and therapeutics of Asian ginseng,

concluding that some general uses are warranted by clinical data (see Uses

below) (WHO, 1999).

Chinese and Japanese pharmacopeial grade ginseng must be composed of the dried

mature root, collected in autumn, from which the rootlets have been removed.

Botanical identity must be confirmed by thin-layer chromatography (TLC) as well

as by macroscopic and microscopic examinations and organoleptic evaluation. It

must contain not less than 14% dilute ethanol-soluble extractive, among other

quantitative purity standards (JP XII, 1993; Tu, 1992). The British Herbal

Pharmacopoeia requirements are comparable to the Asian monographs with some

exceptions, including not less than 20% ethanol-soluble extractive (70%),

calculated with reference to the oven-dried material (BHP, 1996). The German

Pharmacopoeia requires not less than 1.5% total ginsenosides calculated as

ginsenoside Rg1, botanical identification by TLC, macroscopic and microscopic

examination, organoleptic evaluation, and some quantitative purity standards

(DAB 10, 1994). The Swiss Pharmacopoeia requires not less than 2% total

ginsenosides calculated as ginsenoside Rg1 (Ph.Helv.VII, 1987).

 

 

 

 

 

Description

 

Ginseng root consists of the dried main and lateral root and root hairs of P.

ginseng C.A. Meyer [Fam. Araliaceae] and their preparations in effective dosage.

The root contains at least 1.5% ginsenosides, calculated as ginsenoside Rg1.

 

 

 

 

 

Chemistry and Pharmacology

 

The biologically active constituents in P. ginseng are a complex mixture of

triterpene saponins known as ginsenosides (Lewis, 1986; Ng and Yeung, 1986; Liu

and Xiao, 1992). The root contains 2–3% ginsenosides of which Rg1, Rc, Rd, Rb1,

Rb2, and Rb0 are quantitatively the most important.

At least 30 ginsenosides have been isolated and characterized (Ng and Yeung,

1986). The pharmacological actions of individual ginsenosides may work in

opposition. For example, the two main ginsenosides, Rb1 and Rg1, respectively

suppress and stimulate the central nervous system (Chong and Oberholzer, 1988).

These opposing actions may contribute to the " adaptogenic " description of

ginseng and its purported ability to balance bodily functions. Ginseng's

pharmacological activities may be multiple and complex, due not only to

ginsenosides but to a variety of compounds such as panacene (a peptidoglycan),

which has exhibited hypoglycemic activity (Konno et al., 1984), a peptide with

insulinomimetic properties (Ando et al., 1980), and salicylate and vanillic

acid, which showed antioxidant and antifatigue effects in animals (Han et al.,

1983).

The Commission E reported that in various stress models such as immobilization

test and coldness test, the resistance of rodents was enhanced. Ginseng is

reported to possess hormone-like and cholesterol-lowering effects, promote

vasodilatation, and act as an anxiolytic and antidepressant (Choi et al., 1995;

Chong and Oberholzer, 1988). Many studies on animals have found ginseng extracts

and ginsenosides to be effective in stimulating learning, memory, and physical

capabilities (Petkov and Mosharrof, 1987), supporting radioprotection (Takeda et

al., 1981; Takeda et al., 1982), providing resistance to infection (Singh et al,

1984), demonstrating antioxidant and antifatigue effects (Han et al., 1983;

Saito et al., 1974), enhancing energy metabolism (Avakian et al., 1984), and

reducing plasma total cholesterol and triglycerides while elevating HDL levels

(Yamamoto et al., 1983). A recent study at Yale University has suggested that

ginseng's vasodilatory action may be due to nitric oxide synthesis (Gillis,

1997).

 

 

 

 

 

Uses

 

The Commission E approved ginseng as a tonic for invigoration and fortification

in times of fatigue and debility or declining capacity for work and

concentration. Ginseng was also approved for use during convalescence.

The World Health Organization (WHO) monograph section on " uses supported by

clinical data " re-affirms the Commission E approved uses: " Ö used as a

prophylactic and restorative agent for enhancement of mental and physical

capacities, in cases of weakness, exhaustion, tiredness, and loss of

concentration, and during convalescence " (WHO, 1999).

 

 

 

 

 

Contraindications

 

Hypertension (Bradley, 1992).

 

 

 

 

 

Side Effects

 

None known.

 

 

 

 

 

Use During Pregnancy and Lactation

 

The Commission E reports no known restrictions on the use of ginseng during

pregnancy and lactation. Although the British Herbal Compendium contraindicates

ginseng during pregnancy, this is not substantiated by use in Asia or by the

Commission E (McGuffin et al., 1997). However, controlled, long-term safety

studies have not been conducted. WHO has also reiterated that the safety of

ginseng use during pregnancy has not been established, although it noted that

ginseng is not teratogenic (WHO, 1999).

 

 

 

 

 

Interactions with Other Drugs

 

The British Herbal Compendium contraindicates the use of ginseng with

stimulants, including excessive use of caffeine (Bradley, 1992). The WHO

monograph cites two cases of ginseng interaction with phenelzine, a monoamine

oxidase inhibitor, although the clinical significance of this interaction was

yet to be determined (WHO, 1999).

 

 

 

 

 

Dosage and Administration

 

Unless otherwise prescribed: 1–2 g of root per day for up to three months; a

repeated course is feasible.

Decoction: 1–2 g in 150 ml of water.

Fluidextract 1:1 (g/ml): 1–2 ml.

Tincture 1:5 (g/ml): 5–10 ml.

Standardized extract (4% total ginsenosides): 100 mg twice daily.

 

 

 

Asian and American Ginsengs Act Differently on Acute Glycemia

View Member Comments(0) Printer Friendly

 

 

HerbalGram. 2004;64:24 © American Botanical Council (Buy This Issue)

 

 

Reviewed: Sievenpiper JL, Arnason JT, Leiter LA, Vuksan V. Null and opposing

effects of Asian ginseng (Panax ginseng C.A. Meyer) on acute glycemia: Results

of two acute dose escalation studies. Journal of the American College of

Nutrition. 2003;22(6)524–532.

According to the authors, persons with diabetes have a relatively high

prevalence of complementary and alternative medicine use, despite the paucity of

evidence supporting the safety and efficacy of many of these therapies. These

Canadian researchers state that this lack of evidence has “prompted a call for

rigorous scientific evaluations” on many potentially useful botanical materials

for the treatment of diabetes, which has led to the emergence of studies

investigating the effects of ginseng in diabetes. Previous clinical studies

conducted by several of these authors have repeatedly shown that American

ginseng (Panax quinquefolius L., Araliaceae) decreases acute postprandial

glycemia (elevated blood sugar levels after meals).1,2,3 The human studies from

the authors’ laboratory have shown that this antihyperglycemic effect may be

linked to the ratio between specific classes of ginsenosides (glycosidal

saponins) of American ginseng. To investigate whether other ginseng species are

able to replicate this acute glycemia-lowering effect, the authors conducted two

acute dosing trials using Asian ginseng ( P. ginseng C.A. Meyer) following the

same protocol they used previously to study the efficacy of American ginseng.

Asian ginseng has previously shown activity in helping to stabilize blood sugar

levels in noninsulin-dependent diabetes mellitus (NIDDM), also known as type 2

diabetes.4

Healthy male and female adults were enrolled in each of the 2 randomized,

single-blind, placebo-controlled, multiple-crossover trials. The study design

was the same for both trials, which were conducted 7 months apart; only the

dosages differed. The Asian ginseng used was a 3-year-old root powder provided

as 500 mg gel capsules (Korean Ministry of Agriculture and Forestry, Seoul,

South Korea). In the first trial, the subjects received 4 low-dose treatments: 0

(placebo), 1 g, 2 g, and 3 g of Asian ginseng. In the second trial, the subjects

received 4 high-dose treatments: 0 (placebo), 3 g, 6 g, and 9 g of Asian

ginseng. In both trials, subjects underwent a 5-minute 75 g oral glucose

tolerance test 40 minutes after the ginseng treatments. Blood samples were drawn

at - 40, 0, 15, 30, 45, 60, 90, and 120 minutes for measurement of plasma

glucose and insulin concentrations. Eleven subjects completed both trials. The

ginsenoside profile of the Asian ginseng tested was measured by high-performance

liquid chromatography (HPLC) at the University of Ottawa, according to a method

previously developed under the auspices of the American Botanical Council’s

Ginseng Evaluation Program.

In both trials, the effect of time on plasma glucose and insulin concentrations

was significant (p < 0.0001, p < 0.0001; two-way repeated-measures analysis of

variance). When the full data set was analyzed (all time points), the ginseng

treatment had no significant effect on insulin and glucose levels, but there was

a significant effect of overall ginseng treatment on glucose. When the two-hour

plasma glucose concentrations were analyzed pooling all doses, there a

significantly higher glucose level (p = 0.05) in the Asian ginseng treatment

(5.46 ± 0.31 mmol/L) than in the placebo treatment (4.99 ± 0.03 mmol/L). The

composition of the batch of Asian ginseng used was consistent with authentic P.

ginseng ; however, the profile of ginsenosides and their total amounts are

significantly different from the American ginseng studied previously by these

authors. It contained up to 96% lower and 7-fold higher amounts of various

ginsenosides. The authors have demonstrated recently that there is a high

variability of ginsenosides across ginseng species.5

The finding of higher glycemia at the 2-hour time point for the mean of all

Asian ginseng doses relative to placebo treatment is in direct contrast with the

authors’ previous findings with American ginseng. The authors repeatedly showed

an acute glucose-lowering effect of American ginseng, whereas “null to opposite

effects were observed with the present Asian species.” There are at least 2

possible explanations for the discrepancy in findings between the two trials:

(1) species-specific compositional differences, i.e., variability of chemical

compositions between the two species, and (2) possibly insufficient treatment

duration with the Asian ginseng. The authors caution that these contradictory

effects should not be interpreted as representing all ginseng species, because

of the “high variability” in ginsenoside composition of different ginseng

species. Future investigations should aim “to identify candidate components” of

ginseng “to provide a basis for standardization that allows for the development

of profile-specific indications and contraindications.” But, for the present,

based on the current research and the particular batch of Asian ginseng utilized

in this trial, it appears that American ginseng root may be more effective in

reducing post-prandial glycemia than Asian ginseng. Thus, American ginseng may

be a more suitable herb for use in helping diabetics manage blood sugar levels

than Asian ginseng. Nevertheless, this conclusion remains speculative until

confirmed by further investigations.

—Brenda Milot, ELS and Mark Blumenthal

 

HerbalGram. 2001;53:19. American Botanical Council

American Ginseng Reduces Blood Sugar Levels after Meals in Type II Diabetics in

Small Trial

Type II diabetes, also known as non-insulin-dependent diabetes-mellitus (NIDDM)

or adult onset diabetes, is a matter of increasing public health concern,

estimated to affect 14.9 million adult Americans.1 Among the numerous purported

benefits of American ginseng (Panax quinquefolius L., Araliaceae) is its ability

to influence carbohydrate metabolism and diabetes. Past research in humans in

this area is quite limited, and the actual activity of American ginseng (AG) for

this indication is unknown. This paper reports on a single-blind,

placebo-controlled, crossover study of AG on blood sugar levels in both

non-diabetic and Type II diabetic patients.2

Ten non-diabetic and nine Type II diabetic subjects participated in the study.

Type II diabetics were under good control and continued to take their usual

medications throughout the study. Eating, exercise, and sleeping patterns were

controlled between the two groups and between treatments. Patients received 3 g

of AG extract powder (manufactured by Chai-Na-Ta, Langley, B.C., Canada) orally

or a matched placebo either 40 minutes before or simultaneous with the ingestion

of 300 mL of a solution containing 25 g of glucose. Each patient completed each

treatment with a one-week washout interval between treatments. Blood samples

were taken by finger-prick at 5 or 6 intervals for 2 hours following glucose

ingestion, and glucose levels were subsequently measured.

In non-diabetic patients, blood glucose levels were unaffected when AG was taken

simultaneously with glucose, but decreased significantly (-39%, 45 minutes

post-ingestion) when AG was taken 40 minutes before glucose ingestion. In

diabetic patients, glucose was significantly reduced when AG was administered

before (-18%, 45 minutes post-ingestion) or with (-20%, 45 minutes

post-ingestion) glucose. Glucose levels for all placebo treatments were highly

uniform, indicating a reproducible glycemic effect under the experimental

conditions.

The data indicate that AG has a hypoglycemic effect in both non-diabetics and

Type II diabetics when taken 40 minutes prior to a meal. Accordingly, the

authors suggest that it may be important to take AG with a meal to avoid a

hypoglycemic reaction. Because diabetic subjects remained on their medications

throughout the study, it follows that AG can be a useful adjunct to conventional

therapy. The resulting additional decrease in glycemic index may help decrease

diabetic complications. The authors also suggest that since a reduction in

glycemic index similar to that obtained with AG is associated with a reduced

risk of developing diabetes, AG may be useful in prevention. The mechanism by

which AG has these effects is not known, but may involve slowing the digestion

of food, affecting glucose transport, or modulation of insulin secretion. This

study is unique in its relatively higher dose (3 g) of AG than used in previous

trials (usually 1.5 g or less), its use of American rather than Asian ginseng

(P. ginseng C.A. Mey, Araliaceae), and its administration of AG 40 minutes

before glucose ingestion. All these factors were informed by traditional Chinese

use of AG. The authors acknowledge that additional longer-term research is

warranted.

Another team that included some of the same researchers recently published

another clinical trial measuring the effect of AG on healthy volunteers (i.e.,

not diabetics) in which the effects of the ginseng on blood sugar levels after

meals was measured.3 The results showed that American ginseng reduced

postprandial glycemia in subjects without diabetes. These reductions were time

dependent but not dose dependent: an effect was seen only when the ginseng was

administered 40 minutes before the challenge. Doses within the range of 1-3 g

were equally effective.

-Risa N. Schulman, Ph.D.

 

Hollie V Mulhaupt RN, RMT, TCM Practioner, MH, HHP, NC

Texas Herbal Body Solutions

3707 Epperson Trail

Austin, TX 78732

512-266-8141

texasherbalbodysolutions

http://www.texasherbalbodysolutions.com

Austin Alternative Health & Wellness Center

http://www.austin-alternative-health.com

 

 

-

 

 

11/04/05 4:40:56 PM

WoW Holly~Thanks so much~and one more thing

 

 

Dear Holly:

Thank you so very much for that report on the goldenseal tops. That was great

and reminded me that you were just the person that I should contact as I wanted

to keep one of your previous posts.

 

 

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Cinnamon Helps Type 2 Diabetes

 

Also Helps Cholesterol -- But More Than A Sprinkle

Required

 

By Jeanie Lerche Davis

WebMD Medical News Reviewed By Brunilda Nazario, MD

on Friday, December 05, 2003

 

Dec. 5, 2003 -- A spicy tip: Cinnamon can improve

glucose and cholesterol levels in the blood. For

people with type 2 diabetes, and those fighting high

cholesterol, it's important information.

 

Researchers have long speculated that foods,

especially spices, could help treat diabetes. In lab

studies, cinnamon, cloves, bay leaves, and turmeric

have all shown promise in enhancing insulin's action,

writes researcher Alam Khan, PhD, with the NWFP

Agricultural University in Peshawar, Pakistan. His

study appears in the December issue of Diabetes Care.

 

Botanicals such as cinnamon can improve glucose

metabolism and the overall condition of individuals

with diabetes -- improving cholesterol metabolism,

removing artery-damaging free radicals from the blood,

and improving function of small blood vessels, he

explains. Onions, garlic, Korean ginseng, and flaxseed

have the same effect.

 

In fact, studies with rabbits and rats show that

fenugreek, curry, mustard seeds, and coriander have

cholesterol-improving effects.

 

But this is the first study to actually pin down the

effects of cinnamon, writes Kahn. Studies have shown

that cinnamon extracts can increase glucose

metabolism, triggering insulin release -- which also

affects cholesterol metabolism. Researchers speculated

that cinnamon might improve both cholesterol and

glucose. And it did!

 

The 60 men and women in Khan's study had a diagnosis

of type 2 diabetes for an average of 6 1-2 years but

were not yet taking insulin. The participants in his

study had been on antidiabetic drugs that cause an

increase in the release of insulin. Each took either

wheat-flour placebo capsules or 500 milligram cinnamon

capsules.

 

* Group 1 took 1 gram (two capsules equaling about

one-quarter of a teaspoon) for 20 days.

* Group 2 took 3 grams (six capsules, equaling a

little less than one teaspoon) for 20 days.

* Group 3 took 6 grams (12 capsules, equaling

about one and three-quarters teaspoons) for 20 days.

 

Blood samples were taken at each level of the study.

 

Cinnamon made a difference! Twenty days after the

cinnamon was stopped, there were significant

reductions in blood glucose levels in all three groups

that took cinnamon, ranging from 18 to 29%. But these

was one peculiar finding that researchers don't

understand at this point. Only the group that consumed

the lowest level of cinnamon continued with

significantly improved glucose levels -- group 1. The

placebo groups didn't get any significant differences.

 

Taking more cinnamon seems to improve the blood levels

of fats called triglycerides. All the patients had

better triglyceride levels in their 40-day tests --

between 23% to 30% reductions. Those taking the most

cinnamon had the best levels.

 

In groups taking cinnamon pills, blood cholesterol

levels also went down, ranging from 13% to 26%; LDL

cholesterol also known as " bad " cholesterol went down

by 10% to 24% in only the 3- and 6-gram groups after

40 days. Effects on HDL ( " good cholesterol " ) were

minor.

 

Cinnamon should be part of our daily diet -- whether

we have type 2 diabetes or not, writes Kahn. However,

for the best effects, just a sprinkle isn't enough.

 

--- Hollie <hvmrn wrote:

 

> I am a member of the American Botanical Society and

> have an alternative health practice. To the best of

> my knowledge, Goldenseal is not used to treat

> diabetes or the data is so new it is probably

> unreliable. Several years of studies are usually

> necessary before ethical claims can be made and

> dosage recommendations are defined. Ginseng and

> Goldenseal have many similarities and origins so it

> is very possible it may be a real consideration in

> the future. Ginseng however, has shown to have a

> substantial amount of data supporting it usage for

> lowering blood sugar in type 2 diabetes. Here is

> some very good info.

>

>

> Asian Ginseng

>

> This information is for online viewing only. To

> purchase printed copies visit our Herbal Education

> Catalog or email custserv.

> Panax ginseng

> by Steven Foster

> Ginseng, Panax ginseng C. A. Meyer, is the most

> famous of all Asian medicinal plants. Used in China

> for over 2,000 years, numerous scientific studies

> over the past 40 years have concentrated on the

> chemistry, pharmacology, and clinical aspects of

> ginseng use. Much of the research has provided a

> scientific basis for the traditional claims for

> ginseng use.

> Origins

> A member of the ginseng family (Araliaceae), the

> genus Panax contains about six species native to

> eastern Asia and two native to eastern North

> America. Confusion in taxonomic interpretation has

> resulted from use of P. pseudo-ginseng as a synonym

> for Panax ginseng (L. H. Bailey et al., 1976; Tyler,

> 1993). Panax schin-seng Nees is also a synonym for

> Panax ginseng (H. L. Li, 1942). The confusion may

> arise in part from the fact that T. F. L. Nees had,

> in 1833, expressly included the earlier and

> legitimate P. pseudo-ginseng under his P.

> schin-seng. According to S. A. Graham (1966), P.

> schin-seng was superfluous when published, thus

> illegitimate. The earliest legitimate botanical name

> is P. ginseng, first used by C.A. Meyer (1843). It

> is recognized as a distinct entity from P.

> pseudo-ginseng in recent Chinese taxonomic

> treatments on the genus Panax. Ho and Tseng (1978)

> recognize three Chinese species of Panax (P.

> ginseng, P. pseudo-ginseng, and P. zingiberensis).

> They list five varieties under P. pseudo-ginseng.

> Panax derives from Greek roots, pan meaning " all, "

> and akos, " cure, " referring to the " cure all " or

> " panacea " attributes of the root's healthful

> virtues. " Ginseng, " " jenseng, " " schin-seng, " or

> " ren-shen " (various transliterations of the same

> Chinese ideograms), means " essence of the earth in

> the form of a man " (Graham, 1966). S.Y. Hu (1976)

> states that seng is a term employed by Chinese

> medicinal root gatherers for fleshy roots used as

> tonics. Seng is preceded by modifiers to denote the

> source material or medicinal property (such as

> " bitter seng, " " black seng, " " Mingtang seng, " prince

> seng " ). All species of Panax do not produce seng and

> all seng-producing plants are not in the genus

> Panax. S.Y. Hu (1979) uses this metaphor, " A horse

> is a mammal, but not all mammals are horses.

> Likewise, ginseng is a Seng but not all sengs in

> Chinese medicine are ginseng. " She documents 62

> species of " seng-producing " plants in 40 genera of

> 20 botanical families.

> History

> According to S.Y. Hu (1977a), the earliest written

> account of ginseng is from Shen Nong Ben Cao Jing,

> attributed to the Divine Plowman Shen-Nong, compiled

> in the late Han Dynasty (approx. the first century

> A.D.). The short account of 44 words included the

> name ginseng, two synonyms, taste and property,

> habitat, and medicinal uses of ginseng (S. Y. Hu,

> 1977a). In her translation of the account, S. Y. Hu

> (1977a, p. 289) writes, " It is used for repairing

> the five viscera, quietening the spirit, curbing the

> emotion, stopping agitation, removing noxious

> influence, brightening the eyes, enlightening the

> mind and increasing the wisdom. Continuous use leads

> one to longevity with light weight. "

> In the1596 classic of the Chinese materia medica Li

> Shi-zhen's Ben Cao Gang Mu, ginseng is listed in the

> superior class of herbs. Small amounts were said to

> develop light weight while improving vitality (S. Y.

> Hu, 1976).

> The first description of the plant by a Westerner

> was provided by Pere Jartoux, a Jesuit missionary

> stationed in Beijing. His observations, made in

> 1709, include uses, description, and habitat, plus

> historical and personal notes. In 1714 Jartoux's

> account was published in English.

> " Nobody can imagine that the Chinese and Tartars

> would set so high a value on this root, if it did

> not constantly produce a good effect. Those that are

> in health often make use of it, to render themselves

> more vigorous and strong; and I am persuaded that it

> would prove an excellent medicine in the hands of

> any European who understands pharmacy, if he had but

> a sufficient quantity of it to make such trials as

> are necessary, to examine the nature of it

> chemically, and to apply it in a proper quantity,

> according to the nature of the disease for which it

> may be beneficial " (Jartoux, 1714).

> Nearly three centuries after those words were

> written, European, Japanese, Chinese, Soviet, and,

> to a lesser extent, American researchers have

> examined the chemical nature of Panax ginseng, as

> well as its benefits, in dozens of chemical,

> pharmacological, and clinical studies.

> According to the tenets of Traditional Chinese

> Medicine, the taste of Panax ginseng is

> sweet-bitter, and it has a warming character. It is

> a tonic used to increase strength, increase blood

> volume, promote life and appetite, quiet the spirit,

> and give wisdom. It is used alone or in

> prescriptions for general weakness, deficient qi

> (chi) patterns, anemia, lack of appetite, shortness

> of breath with spontaneous perspiration, nervous

> agitation, forgetfulness, thirst, and impotence (S.

> Y. Hu, 1976).

> Current Usage

> Pharmacological and clinical studies conducted over

> the past 40 years focus on radioprotective,

> antitumor, antiviral, and metabolic effects;

> antioxidant activities; nervous system and

> reproductive performance; effects on cholesterol and

> lipid metabolism, and endocrinological activity (Ng

> and Yeung, 1986; S. Shibata et al., 1985).

> Inconsistent results have been reported on

> interpretation of various studies attempting to

> prove a scientific basis for the activity of ginseng

> products (W. H. Lewis et al., 1983; W. H. Lewis,

> 1986). However, S. Shibata et al. (1985) note that

> many of the inconsistencies are due mostly to

> different procedures in preparation, resulting in

> extractions lacking in biologically active

> components.

> Popular and scientific reviews of ginseng research

> may be predisposed to either advocacy or skeptical

> negativity. Peer scrutiny, polarization of research

> methods, and data interpretation, as evidenced by

> question and answer sessions at international

> ginseng symposia, are common in ginseng research

> (Proc. 1st-4th Int. Ginseng Symp. 1974-1984).

> Studies by the Bulgarian researcher Petkov (1959,

> 1961, 1965, 1975; Petkov and D. Staneva-Stoicheva,

> 1963, 1965) provided a pharmacological basis for a

> stimulative effect of ginseng on the central nervous

> system, a hypotensive effect, respiratory

> stimulation effect, blood sugar lowering activity,

> an increase of reactivity of cerebrocortical cells

> in response to stress, increase of erythrocyte and

> hemoglobin counts, and blood cholesterol lowering

> effects.

> I. I. Brekhman, the pioneer Soviet researcher on the

> pharmacology of East Asian ginseng family members,

> gave Soviet soldiers a ginseng extract or placebo,

> and found that those who had the ginseng ran faster

> in a 3 km race. In another experiment, radio

> operators receiving a ginseng extract made fewer

> mistakes and transmitted text faster than those who

> took a placebo. The results suggested that ginseng

> extracts improved stamina (ex. S. Shibata et al.,

> 1985). Brekhman attempted to confirm results of

> human trials with mice experiments, showing that

> mice given ginseng extract swam longer than

> controls, suggesting an antifatigue action. However,

> W. H. Lewis et al. (1983) showed no significant

> differences in stamina or longevity between mice

> ingesting infusions of Panax ginseng (and other

> species) compared with controls.

> Ginseng contains a number of active constituents

> including saponins, essential oil, phytosterol,

> carbohydrates and sugars, organic acids, nitrogenous

> substances, amino acids and peptides, plus vitamins

> and minerals (Hou, 1977). At least 22 saponins,

> known as ginsenosides (or panaxosides) have been

> isolated and found to be the most active

> constituents (Hou, 1977). (See Hou, 1977; Shibata et

> al., 1985 ; and Leung and Foster, 1996 for reviews

> of chemistry.)

> A number of experiments by Saito et al. (1974a,

> 1974b) employed pure ginseng saponins to determine

> the effect of ginseng components on normal and

> exhausted mice to determine anti-fatigue activity

> and the effect on the central nervous system.

> Results were opposite with different chemical

> fractions. Central nervous system sedative,

> tranquilizing, and hypotensive actions were shown

> for the ginseng saponin known as ginsenoside

> Rb-1. CNS-stimulant, hypertensive, and antifatigue

> activity were shown for ginsenoside Rg-1. While a

> CNS-stimulant at lower doses, higher doses of

> ginsenoside Rg-1 had sedative action (Shibata et

> al.,

=== message truncated ===

 

 

Best regards,

Carol

 

_______________________________

Never Accept Only Two Choices in Life.

The problems of Today cannot be solved by the same thinking that created them.

-Al Einstein.

 

 

 

 

 

 

 

 

 

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