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How
can saw palmetto be used to treat baldness
Several reports indicate saw palmetto is effective in treating
benign prostatic hyperplasia. Animal models show that Permixon will
inhibit prostate gland enlargement when rats are given estrogens
and testosterone. In comparison, control rats receiving hormones
but no Permixon had significant prostate enlargement. Other animal
studies reveal that the Permixon is being preferentially taken up
and retained in the prostate gland. Other tissues such as the seminal
vesicles or liver showed far lower uptake of saw palmetto extract.
Human treatment using saw palmetto is much more widely practiced
in treatment of human prostatic hyperplasia typically involves oral
ingestion of 160mg saw palmetto extract twice a day. This dosage
has been associated with significant improvement for individuals
with prostatic hyperplasia problems. Some investigators report that
the results are even comparable to using finasteride (Propecia)
to treat benign prostatic hyperplasia.
Some research suggests that saw palmetto extract works at the
site of androgen receptors on steroid sensitive cells. Research
shows that saw palmetto does not have an effect on the plasma concentration
of testosterone, dihydrotestosterone, or other hormones so systemic
production of testosterone is maintained when taking saw palmetto.
In contrast finasteride has been shown effective in reducing serum
concentration of dihydrotestosterone. Saw palmetto seems to work
locally at the actual site of hormone binding to receptors on cells.
It apparently stops or at least reduces the receptor binding of
androgens. It also locally inhibits 5 alpha reductase and 3 ketosteroid
reductase and these enzymes are involved in converting testosterone
to the more potent dihydrotestosterone (DHT). Saw palmetto extract
may also act to reduce inflammation that is associated with benign
prostatic hyperplasia by reducing immune cell production of stimulating
cytokine chemicals.
These reports suggest that saw palmetto may be effective in treating
androgenetic alopecia, however, no direct clinical trails have been
conducted to define just how effective saw palmetto may be in treating
pattern baldness.
How
can saw palmetto be used to treat baldness references
- Paubert-Braquet
M, Richardson FO, Servent-Saez N, Gordon WC, Monge MC, Bazan NG,
Authie D, Braquet P. Effect of Serenoa repens extract (Permixon)
on estradiol/testosterone-induced experimental prostate enlargement
in the rat. Pharmacol Res. 1996 Sep-Oct;34(3-4):171-9.
- Paubert-Braquet
M, Mencia Huerta JM, Cousse H, Braquet P. Effect of the lipidic
lipidosterolic extract of Serenoa repens (Permixon) on the ionophore
A23187-stimulated production of leukotriene B4 (LTB4) from human
polymorphonuclear neutrophils. Prostaglandins Leukot Essent Fatty
Acids. 1997 Sep;57(3):299-304.
- Chevalier
G, Benard P, Cousse H, Bengone T. Distribution study of radioactivity
in rats after oral administration of the lipido/sterolic extract
of Serenoa repens (Permixon) supplemented with [1-14C]-lauric
acid, [1-14C]-oleic acid or [4-14C]-beta-sitosterol. Eur J Drug
Metab Pharmacokinet. 1997 Jan-Mar;22(1):73-83.
- Gerber
GS, Zagaja GP, Bales GT, Chodak GW, Contreras BA. Saw palmetto
(Serenoa repens) in men with lower urinary tract symptoms: effects
on urodynamic parameters and voiding symptoms. Urology. 1998 Jun;51(6):1003-7.
- Plosker
GL, Brogden RN. Serenoa repens (Permixon). A review of its pharmacology
and therapeutic efficacy in benign prostatic hyperplasia. Drugs
Aging. 1996 Nov;9(5):379-95.
- Ravenna
L, Di Silverio F, Russo MA, Salvatori L, Morgante E, Morrone S,
Cardillo MR, Russo A, Frati L, Gulino A, Petrangeli E. Effects
of the lipidosterolic extract of Serenoa repens (Permixon) on
human prostatic cell lines. Prostate. 1996 Oct;29(4):219-30.
- Casarosa
C, Cosci di Coscio M, Fratta M. Lack of effects of a lyposterolic
extract of Serenoa repens on plasma levels of testosterone, follicle-stimulating
hormone, and luteinizing hormone. Clin Ther. 1988;10(5):585-8.
- Strauch
G, Perles P, Vergult G, Gabriel M, Gibelin B, Cummings S, Malbecq
W, Malice MP. Comparison of finasteride (Proscar) and Serenoa
repens (Permixon) in the inhibition of 5-alpha reductase in healthy
male volunteers. Eur Urol. 1994;26(3):247-52.
- Iehle
C, Delos S, Guirou O, Tate R, Raynaud JP, Martin PM. Human prostatic
steroid 5 alpha-reductase isoforms--a comparative study of selective
inhibitors. J Steroid Biochem Mol Biol. 1995 Sep;54(5-6):273-9.
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