عصاره نخل اره ای ( به انگلیسی: Saw palmetto extract ) عصارهٔ میوهٔ سرینو ریپنز است و سرشار از اسیدهای چرب و فیتوسترول ( به انگلیسی: Phytosterol ) می باشد. از این ماده برای درمان سنتی تعدادی از بیماری ها استفاده می شود که مهمترین آن ها هایپرپلازی خوش خیم پروستات است.
درمان ریزش مو [ویرایش]
گزارش های تایید نشده از اثر مثبت این عصاره در جلوگیری از ریزش مو حکایت دارد. عصاره نخل اره ای با مختل کردن علائم هورمونی، از نزدیکی ماده ای به نام هیدروتستوسترون به پیاز مو جلوگیری می کند. گفته می شود که یکی از دلایل اصلی ریزش موی طبیعی مردان، از بین رفتن پیاز های مو توسط هیدروتستوسترون است.
عوارض جانبی [ویرایش]
عوارض جانبی و واکنش های آلرژیک مصرف این عصاره بسیار ناچیز است. شایع ترین عوارض، عوارض گوارشی هستند که چنانچه مصرف عصاره با وعده های غذایی همراه گردد، می توان بروز آن ها را کنترل نمود. مصرف عصاره ممکن است خطر خونریزی را افزایش داده و یا هورمو ن های جنسی را تحت تاثیر قرار دهد. باید از مصرف همزمان این عصاره با دارو های دیگر خودداری نمود.
منابع [ویرایش]
http://www. iran20. ir/view. asp?id=50011553890100001
http://www. articlesbase. com/supplements - and - vitamins - articles/saw - palmetto - for - hair - loss - saw - palmetto - benefits - 727587. html
Wikipedia contributors, "Saw palmetto extract, " Wikipedia, The Free Encyclopedia, http://en. wikipedia. org/w/index. php?title=Saw_palmetto_extract&oldid=385311369 ( accessed September 17, 2010 ) .
رده ها: گیاهان گیاهان دارویی گیاهان طبی مکمل های غذایی
قس انگلیسی
Saw palmetto extract is an extract of the fruit of Serenoa repens. It is rich in fatty acids and phytosterols. It has been used in traditional, eclectic, and alternative medicine to treat a variety of conditions, most notably benign prostatic hyperplasia ( BPH ) . Review of clinical trials, including those conducted by the National Center for Complementary and Alternative Medicine, found the extract to be no more effective than placebo for BPH. [1]
Contents [show]
[edit]Medicinal use
Saw palmetto is used in several forms of traditional herbal medicine. American Indians used the fruit for food and to treat a variety of urinary and reproductive system problems. The Mayans drank it as a tonic, and the Seminoles used the berries as an expectorant and antiseptic. [2]
Crude saw palmetto extract was used by European/American medical practitioners for at least 200 years for various conditions, including asthenia ( weakness ) , recovery from major illness, and urogenital problems. The eclectic medicine practitioner H. W. Felter wrote of it, "Saw palmetto is a nerve sedative, expectorant, and a nutritive tonic, acting kindly upon the digestive tract. . . Its most direct action appears to be upon the reproductive organs when undergoing waste of tissue. . . "[3]
King's American Dispensatory ( 1898 ) says of the extract:
It is also an expectorant, and controls irritation of mucous tissues. It has proved useful in irritative cough, chronic bronchial coughs, whooping - cough, laryngitis, acute and chronic, acute catarrh, asthma, tubercular laryngitis, and in the cough of phthisis pulmonalis. Upon the digestive organs it acts kindly, improving the appetite, digestion, and assimilation. However, its most pronounced effects appear to be those exerted upon the urino - genital tracts of both male and female, and upon all the organs concerned in reproduction. It is said to enlarge wasted organs, as the breasts, ovaries, and testicles, while the paradoxical claim is also made that it reduces hypertrophy of the prostate. Possibly this may be explained by claiming that it tends toward the production of a normal condition, reducing parts when unhealthily enlarged, and increasing them when atrophied. [4]
Saw palmetto extract is the most popular herbal treatment for benign prostatic hyperplasia, [5] a common condition in older men. Early research indicated that the extract is well - tolerated and suggested "mild to moderate improvement in urinary symptoms and flow measures. "[5][6] Later trials of higher methodological quality indicated no difference from placebo. [7][8] Questions of adequate blinding and delivery of any active ingredients remain. [9]
Inhibition of both forms of 5 - alpha - reductase with no reduction in cellular capacity to secrete prostate - specific antigen is indicated. [10][11][12][13]
Other proposals for mechanisms of action include interfering with dihydrotestosterone binding to the androgen receptor, relaxing smooth muscle tissue similarly to alpha antagonist drugs, and acting as a phytoestrogen. [14][15]
Limited in vitro and animal model studies suggest possible anti - tumor activity and potential for use in the treatment of cancer. [10][16][17] These results have not been substantiated with human trials.
Saw palmetto extract has been suggested as a potential treatment for male pattern baldness. [18]
The latest Cochrane Database review ( 2009 ) concludes that "Serenoa repens was not more effective than placebo for treatment of urinary symptoms consistent with BPH. "[1]
A . . .
