Discover new content like: Help maintain a healthy prostate gland. at VitaNet

Help maintain a healthy prostate gland.

Comprehensive Prostate Formula-the Clinical Studies

Darrell Miller

10/13/05

Date: October 13, 2005 04:32 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Comprehensive Prostate Formula-the Clinical Studies

Helps maintain a healthy prostate gland.

Supports normal urinary function.

Comprehensive Prostate Formula-the Clinical Studies

Saw palmetto Extract

Saw palmetto extract is one of the world's leading herbal products for prostate support. Widely-cited clinical studies conducted over the last fifteen years suggest Saw palmetto extract can produce major improvements in prostate-related urinary function. In clinical studies, Saw palmetto extract has produced measurable improvements in urinary functions and prostate size. Quality of life scores have also improved. The results with Saw palmetto extract have been duplicated in open trials and controlled, double-blind studies.11,12,13 For example, in a large open trial, 505 men took 320 mg of Saw palmetto extract daily for three months.1 The results were evaluated with various measurements such as the International Prostate Symptom Score, the quality of life score, urinary flow rates, residual urinary volume, and prostate size. After 45 days these parameters improved significantly. After 90 days of treatment nearly ninety percent of both the doctors and patients regarded Saw palmetto extract as effective as therapy for the prostate.

The changes in prostate health that accompany middle age are related to the hormone DHT, or dihydrotestosterone, a metabolite of testosterone. DHT levels rise, and DHT binds to prostate cells, accelerating growth of prostate tissue. Saw palmetto extract has been shown to inhibit 5 alpha-reductase, an enzyme that controls conversion of testosterone to DHT.14 Experimental evidence suggests Saw palmetto extract blocks the binding of DHT to prostate cells.15 The fatty acids and sterols in Saw palmetto are believed to be responsible for these actions.14,16 These include oleic acid, lauric acid, campasterol, stigmasterol, beta-sitosterol and others. Clinical studies have used extracts containing 85 to 90 percent fatty acids and sterols.

Pygeum Extract

Like Saw palmetto, Pygeum contains natural sterols and fatty acids.2 Although the mechanisms for its effect have not been clearly established, animal experiments suggest Pygeum may work by inhibiting prostate cell proliferation and reducing inflammation.17,18 In several European trials, Pygeum has successfully improved urinary function. In a large double-blind, placebo-controlled study, 263 men were given 100 mg of Pygeum extract a day for 60 days. Urination improved in 66 percent of the men taking Pygeum, compared with 31 percent on placebo, based on subjective and objective tests.19

Nettle Root Extract

Nettles are approved by the German Commission E as effective for relieving inflammation in the urinary tract.20 As far back as 1950, German investigators have observed favorable effects on the prostate with the use of Nettle root. These initial findings have been confirmed through case studies, as well as double-blind studies, published mainly in German medical journals. In a recent double blind study published in the journal Clinical Therapeutics, 134 men took a combination of Nettle root extract and Pygeum extract over a period of 56 days.3 Urination was significantly improved.

L-Alanine, Glutamic Acid and Glycine

As noted above, Drs. Feinblatt and Gant discovered that a combination of the amino acids L-alanine, glutamic acid and glycine has a positive effect on prostate-related urinary function.5 A controlled study of 45 men was conducted to follow up on these initial observations.21 The majority of subjects experienced complete or partial relief in urinary complaints such as nighttime urination and urgency.

Scientific References
1. Braeckman, J., 'The extract of Serenoa repens in the treatment of benign prostatic hyperplasia: a multicenter open study,' Current Therapeutic Research 1994: 55(7):776-85.

2. Lawrence Review of Natural Products. Pygeum. Jan 1998. Facts and Comparisons, St. Louis, MO.

3. Combined extracts of Urtica dioica and Pygeum africanum in the treatment of benign prostatic hyperplasia: double-blind comparison of two doses Clinical Therapeutics 1993; 15(6):1011-19.

4. Wagner, H., Willer, F., Samtleben, R., Boos, G. Search for the antiprostatic principle of stinging nettle (Urtica dioica) roots Phytomedicine 1994; 1:213-224.

5. Feinblatt, H.M., Gant, J.D. Palliative treatment of benign prostatic hypertrophy. Journal of the Maine Medical Association, March 1958:99-124.

6. Giovanni, E., et. al. Intake of carotenoids and retinol in relation to risk of prostate cancer. Journal of the National Cancer Institute 1995;87(23):1767-76.

7. Wallace, A.M., Grant, J.K. Effect of zinc on androgen metabolism in the human hyperplastic prostate. Biochemical Society Transactions 1975; 3(3):540-42

8. Badmaev, V., Majeed, M., Passwater, R. Selenium: A quest for better understanding. Alternative Therapies 1996; 2(4):59-67.

9. Fouhad, M.T. Selenium and cancer, chromium and diabetes: two trace elements that have merits as dietary supplements in human nutrition. Journal of Applied Nutrition 1979:31(1&2):14-17.

10. Vescovi, P.P., et. al. Pyridoxine (Vit. B6) decreases opoids-induced hyperprolactinemia. Horm. metabol. Res. 1985; 17:46-47.

11. Tasca, A., et. al. Treatment of obstructive symptomatology caused by prostatic adenoma with an extract of Serenoa repens. Double-blind clinical study vs. placebo. Minerva Urologica e Nefrologica 1985; 37:87-91.

12. Champault, G., Bonnard, A.M., Cauquil, J., Patel, J.C. Medical treatment of prostatic adenoma. A controlled test of PA 109 vs. placebo in 110 patients. Ann. Urol. 1984; 18(6):407-410.

13. Crimi, A., Russo, A. The use of Serenoa repens extract in the treatment of functional disturbances caused by prostate hypertrophy. Med. Praxis 1983; 4:47-51.

14. NiederprŸm, H.J., Schweikert. H.U., ZŠnker, K.S. Testosterone 5 alpha-reductase inhibition by free fatty acids from Sabal serrulata fruits. Phytomedicine 1994; 1:127-133.

15. Sultan, C., et. al. Inhibition of androgen metabolism and binding of liposterolic extract of Serenoa repens B in human foreskin fibroblasts. J. Steroid Biochem. 1984; 20(1):515-519.

16. Weissner, H., et. al. Effects of the Sabal serrulata extract IDS 9 and its subfractions on 5 alpha-reductase activity in human benign prostatic hyperplasia. The Prostate 1996;28:300-06.

17. Yablonsky, F. Nicolas, V., Riffaud, J.P., Bellamy, F. Antiproliferative effect of Pygeum africanum on rat prostatic fibroblasts. J. of Urology 1997; 157:2381-87.

18. Marconi, M. et. al. Anti-inflammatory action of Pygeum extract in the rat. Farmaci. & Terapia. 1986; 3:135.

19. Barlet, A, et. al. Efficacy of Pygeum africanum extract in the treatment of micturational disorders due to benign prostatic hyperplasia. Evaluation of objective and subjective parameters. A multicenter, randomized, double-blind trial. Wien. Klin. Wocheschr. 1990; 22:667-73.

20. The Complete German Commission E Monographs. 1998, Blumenthal, M., ed., (p.216) Austin, TX: American Botanical Council.

21. Damrau, F. Benign prostatic hypertrophy: amino acid therapy for symptomatic relief. American Journal of Geriatrics 1962; 10:426-30.

--
VDiscount Vitamins at itanet ®