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J Dermatol 2002 Aug;29(8):489-98
Comparative efficacy of various treatment regimens for androgenetic alopecia in men.
Our understanding of the aetiology of androgenetic alopecia (AGA) has substantially increased in recent years. As a result, several treatment modalities have been tried with promising results especially in early stages of AGA. However, as far as has been ascertained, there is no comprehensive study comparing the efficacy of these agents alone and in combination with each other. One hundered male patients with AGA of Hamilton grades II to IV were enrolled in an open, randomized, parallel-group study, designed to evaluate and compare the efficacy of oral finasteride (1 mg per day), topical 2% minoxidil solution and topical 2% ketoconazole shampoo alone and in combination. They were randomized into four groups. Group I (30 patients) was administered oral finasteride, Group II (36 patients) was given a combination of finasteride and topical minoxidil, Group III (24 patients) applied minoxidil alone and Group IV (10 patients) was administered finasteride with topical ketoconazole. Treatment efficacy was assessed on the basis of patient and physician assessment scores and global photographic review during the study period of one year. At the end of one year, hair growth was observed in all the groups with best results recorded with a combination of finasteride and minoxidil (Group II) followed by groups IV, I and III. Subjects receiving finasteride alone or in combination with minoxidil or ketoconazole showed statistically significant improvement (p<0.05) over minoxidil only recipients. No signifcant side-effects related to the drugs were observed. In conclusion, it is inferred that the therapeutic efficacy is enhanced by combining the two drugs acting on different aetiological aspects of AGA.
J Altern Complement Med 2002 Apr;8(2):143-52
A randomized, double-blind, placebo-controlled trial to determine the effectiveness of botanically derived inhibitors of 5-alpha-reductase in the treatment of androgenetic alopecia.
BACKGROUND: Androgenetic alopecia (AGA) is characterized by the structural miniaturization of androgen-sensitive hair follicles in susceptible individuals and is anatomically defined within a given pattern of the scalp. Biochemically, one contributing factor of this disorder is the conversion of testosterone (T) to dihydrotestosterone (DHT) via the enzyme 5-alpha reductase (5AR). This metabolism is also key to the onset and progression of benign prostatic hyperplasia (BPH). Furthermore, AGA has also been shown to be responsive to drugs and agents used to treat BPH. Of note, certain botanical compounds have previously demonstrated efficacy against BPH. Here, we report the first example of a placebo-controlled, double-blind study undertaken in order to examine the benefit of these botanical substances in the treatment of AGA. OBJECTIVES: The goal of this study was to test botanically derived 5AR inhibitors, specifically the liposterolic extract of Serenoa repens (LSESr) and beta-sitosterol, in the treatment of AGA. Subjects: Included in this study were males between the ages of 23 and 64 years of age, in good health, with mild to moderate AGA. RESULTS: The results of this pilot study showed a highly positive response to treatment. The blinded investigative staff assessment report showed that 60% of (6/10) study subjects dosed with the active study formulation were rated as improved at the final visit. CONCLUSIONS: This study establishes the effectiveness of naturally occurring 5AR inhibitors against AGA for the first time, and justifies the expansion to larger trials.
J Pract Nurs 2001 Winter;51(4):18-21; quiz 22-3
Can stress make you lose your hair?
Many individuals are frightened by hair loss and are hesitant to speak about it. Many are unaware that stressors can causes hair loss and that hair care practices and habits can aggravate a hair loss situation. Intervention by the nurse in encouraging a person to have an adequate assessment and work-up can facilitate an accurate diagnosis. Supportive and appropriate therapy can then be arranged. The hair tells a story and can be associated with good health.
J Dermatol Sci. 2003 Apr;31(2):91-8.
The extract of Thujae occidentalis semen inhibited 5alpha-reductase and androchronogenetic alopecia of B6CBAF1/j hybrid mouse.
BACKGROUND: The conversion of testosterone to dihydrotestosterone; 5alpha-androstan-17beta-ol-3-one by 5alpha-reductase plays a crucial role in hair baldness and prostatomegaly. Recent approach showed specific inhibitors for 5alpha-reductase type 2 such as finasteride promoted hair growth in male pattern alopecia. OBJECTIVE: In order to search for effective medicinal plant extracts applied topically for androgenetic alopecia, we screened natural plant extracts having inhibitory activities of 5alpha-reductase type 2 and demonstrated its biological function in androgen-related animal models. METHODS: We evaluated the inhibition activities of numerous plant extracts by contact cell based metabolic method using a stable HEK 293 cell line expressing human 5alpha-reductase (type 2). To elucidate the biological activity in vivo, the Thujae occidentalis semen (TOS) extract was topically applied to fuzzy rat and androchronogenetic alopecia (AGA) mouse, respectively. The secreted sebum and the size of sebaceous glands of fuzzy rat were measured after 6 weeks. Also, after the topical treatment with TOS extract and androgen receptor antagonist (cyproterone acetate) simultaneously with subcutaneous injection of testosterone (1 mg/mice/day), hair loss patterns of female B6CBAF1/j hybrid mouse were observed. RESULTS: TOS extract showed higher inhibition activity of 5alpha-reductase type 2(IC(50) value=2.6 microg/ml) than that of gamma-linolenic acid, but lower than that of finasteride. When applied to fuzzy rat, the amount of sebum and sebaceous gland size decreased remarkably. In AGA model, alopecia degrees of two groups, treated with TOS extract (P<0.015) or cyproterone acetate (P<0.01), were lower than that of vehicle (propylene glycol:ethanol=7:3) and there was no difference between above two groups. CONCLUSION: We have demonstrated the inhibitory activity of TOS extract for 5alpha-reductase type 2 and its biological action in two animal models, suggesting that TOS extract would be used as an effective agent for male pattern baldness by modifying androgen conversion.
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Related Web resources:
What is hair?
Curly Hair
Biology of hair growth and development.
The phenomenon of hair loss.
Methods and treatments for hair loss and baldness.
Drugs and hair transplantation surgery for hair loss and baldness.
Hair loss linked to other health problems.
Baldness by choice and fashion.
Alopecia info.
Alopecia treatment info.
Alopecia treatment info.
Hair care info.
Hair loss and alopecia research articles: abstracts and source links.
DHEA has been suggested to provide numerous potential benefits. DHEA (or dehydroepiandrosterone) is converted into androgens (male hormones)
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