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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.
Clin Exp Dermatol 2002 Jul;27(5):405-9
Epidemiology and genetics of alopecia areata.
The frequency of alopecia areata and observed patterns of heritability are in keeping with a polygenic inheritance model but the genetics of alopecia areata is still poorly understood. The role of environmental factors in triggering disease initiation or exacerbation remains almost entirely speculative. Using the candidate gene approach, three susceptibility/severity factors have been identified. HLA alleles were the first to show a strong association with alopecia areata and some DQB and DR alleles have been demonstrated to confer a high risk for disease by both case-control and family-based studies. Interleukin (IL)-1 cluster genes, mainly the IL-1 receptor antagonist, show a strong association with disease severity in alopecia areata and a number of other autoimmune and inflammatory diseases. Finally, the association of alopecia areata with Down's syndrome, the high frequency of alopecia areata in autoimmune polyglandular syndrome type I due to mutations of the autoimmune regulator (AIRE) gene on chromosome 21q22.3 and the finding of association with MX1, another gene in the Down's syndrome region of chromosome 21 indicate this area of the genome as a promising target for future-family based investigations. The role of individual genes of the MHC, IL-1 cluster or chromosome 21q22.3 is difficult to establish and further genetic and functional investigations are needed to confirm their involvement in the pathogenesis of alopecia areata.
Eur J Dermatol 2002 Jul-Aug;12(4):327-34
Diphencyprone immunotherapy alters anti-hair follicle antibody status in patients with alopecia areata.
Alopecia areata (AA) is a relatively common reversible hair loss disorder usually manifesting as patchy areas of complete hair loss on the scalp and other body parts that can progress to complete loss of all body hair. This condition is now generally assumed to be an autoimmune disease with the hair follicle (HF) as the principal target tissue. AA may be passively transferred by T cells and there is some evidence that serum IgG may also disturb hair cycling. Here, we examine whether the status of anti-HF antibody reactivity is altered during hair regrowth associated with topical immunotherapy using the contact sensitizer diphencyprone. Eleven patients with severe AA of the scalp were treated with diphencyprone on one side of the scalp and serum was obtained from each patient before the start of therapy, after unilateral hair regrowth, during continuing hair regrowth and in some cases after complete and sustained regrowth. The presence and titer of circulating antibodies to HF was assessed by indirect immunofluorescence and immunoblotting analysis. A striking reduction was detected in both the titer and range of HF components/antigens targeted by anti-hair follicle IgG antibodies in those patients that exhibited complete and sustained hair regrowth after DCP-treatment. By contrast, unilateral hair regrowth was associated with no change, or even an increase, in anti-HF antibody titer and reactivity. Therefore we can conclude that the down-regulation of antibody reactivity is likely to be a result rather than the cause of hair regrowth induction by topical immunotherapy. As this immunotherapy is associated with a reduction in the titer/pattern of anti-HF antibodies, these may hold the key to the identity of the HF antigen targets in AA. Moreover, the presence/titer of anti-HF antibodies may be a marker of clinical disease activity or opportunity for spontaneous regrowth.
Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 1999 Jan;13(1):28-30
The clinical application of scalp expansion in the repair of cicatricial baldness in children
OBJECTIVE: To introduce the clinical application of the expanded graft from scalp in the repair of cicatricial baldness in children. METHODS: 45 cases with baldness following burn from 1988 to 1998 were reported. All of these patients (age ranged from 5-11 years) were treated by soft tissue expander. RESULTS: 5 cases were followed up for 1-2 years, the clinical results showed that the result from the graft of scalp expansion was satisfactory, and the long-term follow-up revealed that the hair in expended area and that in normal area was almost the same except the orientation of hair distribution had some difference. CONCLUSION: The head scalp expansion might be the first choice in the repair of cicatricial baldness following burn.
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