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Maitake

Grifola frondosa

Maitake has a long history of therapeutic application and is well documented in western literature as immune modulating. The below compiled literature describes clinically significant research for use of Maitake mushrooms.

As with other mushrooms, clinical efficacy is most often credited to complex polysaccharides. Several research records indicate that Maitake constituents have two significant biochemical effects:

See links below for research details.

US Patents

Issued US Patents
Patent Link
Title
Experimental Data
5,773,426 Proteoglucan and antidiabetic drug thereof Diabetes
5,939,072 Herbal composition and method of treating viral infection of the liver Hepatitis

 

NIH - Clinical Trial Data

Conclusions are provided for convenience. Please use the link to review article abstracts.


Clinical Trial Results
Study Link
Clinical Study Abstracts
Yang 1999 OBJECTIVE: To lower postoperative recurrence rate of bladder cancer, the prophylactic effects of five kinds of method on bladder cancer were evaluated. METHODS: Between 1982 and 1997, 313 patients after TURBT or partial cystectomy were followed up for 2 to 15 years (average 7.6 years). These patients were divided into six groups: BCG, mitomycin C (MMC), thiotepa, Chinese herb medicine Zhuling (Grifola umbellata pilat), afterloading brachytherapy and control group. The prophylactic effects of them on postoperative recurrence of bladder cancer was evaluated. RESULTS: During the follow-up, the recurrence rates were 35.1% in BCG group, 34.9% in Zhuling group, 41.7% in MMC group, 52.6% in thiotepa group, 64.7% in control group, respectively. 25 high-risk patients with invading or multiple bladder cancer were treated by afterloading brachytherapy. They were followed up from 12 to 42 months, with a recurrence rate being 24.0%. CONCLUSIONS: The prophylactic effect of Zhuling and BCG on bladder cancer recurrence was better than MMC. The vale of thiotepa was not significant. The afterloading brachytherapy was of great vale to invading or recurrent, multiple bladder cancer.
Kubo 1996 OBJECTIVE: To determine the efficacy of maitake mushrooms in inhibiting the elevation of liver and serum lipids in rats. DESIGN: Sprague-Dawley rats with hyperlipidemia were used to measure and compare the values of cholesterol, phospholipids, and triglycerides between cholesterol-fed rats and rats whose diets were fortified with 20% maitake mushroom dried powder. RESULTS: The values in maitake-fed rats were consistently less than those in the basic cholesterol-fed rats. The value of high-density lipoprotein cholesterol, which usually is decreased by taking high-cholesterol feed, maintained the level that it had at the beginning of the experiment. Weights of extirpated liver and epididymal fat pads were significantly less than those in the basic feed group. CONCLUSION: Our data suggest that maitake mushrooms have the ability to alter lipid metabolism by inhibiting both the accumulation of liver lipids and the elevation of serum lipids. Further studies are needed to elucidate the mechanism of activity of maitake mushrooms and to establish whether their action in humans is similar to that in the animal model tested here.

 

 

 

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