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Bone Marrow Transplant 2002 Nov;30(9):593-7
Relationship between irreversible alopecia and exposure to cyclophosphamide, thiotepa and carboplatin (CTC) in high-dose chemotherapy.
Reversible alopecia is a commonly observed, important and distressing complication of chemotherapy. Permanent alopecia, however, is rare after standard-dose therapy, but has occasionally been observed after high-dose chemotherapy with cyclophosphamide, thiotepa and carboplatin (CTC). We evaluated the relationships between total exposure to these three compounds and their different metabolites in the high-dose CTC regimen, and the subsequent development of irreversible alopecia. Twenty-four patients received two or three courses of high-dose CTC, each followed by peripheral blood progenitor cell transplantation. Plasma levels of cyclophosphamide, its active metabolite 4-hydroxycyclophosphamide, thiotepa, its active metabolite tepa, and carboplatin were determined, and the area-under-the-plasma concentration-versus-time curves (AUC) of the compounds were calculated. Eight of the 24 patients included in the study developed permanent alopecia, while seven had normal hair regrowth and nine patients developed incomplete and/or thin hair regrowth. The carboplatin AUC and the summed AUC of thiotepa and tepa were both significantly associated with increasing irreversibility of hair loss. These results suggest that high exposure to carboplatin and the sum of the thiotepa and tepa exposure may lead to the development of permanent alopecia. This knowledge could guide therapeutic drug monitoring in order to prevent the occurrence of permanent alopecia and thereby improve the patients' quality of life.
Cutis 2002 Apr;69(4):255-6
Congenital triangular alopecia: a case report and review.
Congenital triangular alopecia is a nonscarring loss of hair mass on the scalp's temporal regions. The area of hair diminution commonly is described as triangular or lancet shaped. Although previously considered congenital, this condition usually is noticed after 2 years of age and, more recently, is thought to be acquired. We propose that this entity be renamed triangular alopecia. Because this condition involves normal rather than inflamed skin, it does not respond to topical or intralesional steroids. It is important to make the correct diagnosis to avoid unnecessary and potentially harmful interventions. We present the case of a 10-year-old boy with triangular alopecia.
Oncology 2002;62(2):97-102
Effectiveness of the MSC cold cap system in the prevention of chemotherapy-induced alopecia.
OBJECTIVE: To study the effectiveness of the MSC cold cap system to prevent chemotherapy-induced alopecia. METHODS: The system was applied in 83 cancer patients (mean age 49.8 years) undergoing chemotherapy with alopecia-causing agents. Seven patients did not tolerate the system. Seventy-six patients were evaluable for assessment; 26 received anthracycline (group A), 33 taxane (group T), 5 anthracycline plus taxane (group AT), 7 intravenous etoposide (group E) and 5 ifosfamide with or without other alopecia-causing drugs (group I). In group A, 18 patients received conventional (subgroup Ac) and 8 high doses (subgroup Ah). In group T, 8 patients received docetaxel (subgroup D) and 25 paclitaxel (subgroup P). Alopecia grade 0-1 (Dean's system) was considered as treatment success. RESULTS: Grade 0-1 alopecia was achieved in 49/76 (64.5%) patients: group T 23/33 (69.6%), subgroup P 16/25 (64%) and subgroup D 7/8 (87.5%); group A 18/26 (69.2%), subgroup Ac 16/18 (88.8%) and subgroup Ah 2/8 (25%); group AT 1/5 (20%); group E 6/7 (85.7%), and group I 1/5 (20%). CONCLUSIONS: The MSC cold cap system is effective in preventing alopecia from anthracycline, etoposide or taxane but not from anthracycline-taxane combinations or ifosfamide-containing regimens.
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.
Natural Herbal Supplement: Hair Million
Hair loss, or alopecia is a concern for increasing number of folks in aging society. Loss of hair is indeed a visible problem.
The phenomenon of hair thinning and hair loss is most commonly associated with natural phenomena associated with aging, there are many other causes of hair loss, which include inherited or genetic conditions, illnesses, malnutrition, stress, hormonal problems, chemotherapy, and use of some drugs.
Hair growth is a sophisticated biological process, which has not yet been completely understood. A multitude of therapeutic measures, including drugs, surgery, and suppelements have been made available, and used. However, due to the diversity of the problems underlying hair loss, there is no single solution for all hair loss cases. Most of chemical drugs and hair transplantation surgeries are not free from varying degrees of undesirable side effects on health.
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