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Genomics 2003 Jan;81(1):6-14
Curly bare (cub), a new mouse mutation on chromosome 11 causing skin and hair abnormalities, and a modifier gene (mcub) on chromosome 5.
In the outcrossing of a new recessive mouse mutation causing hair loss, a new wavy-coated phenotype appeared. The two distinct phenotypes were shown to be alternative manifestations of the same gene mutation and attributable to a single modifier locus. The new mutation, curly bare (cub), was mapped to distal Chr 11 and the modifier (mcub) was mapped to Chr 5. When homozygous for the recessive mcub allele, cub/cub mice appear hairless. A single copy of the dominant Mcub allele confers a full, curly coat in cub/cub mice. Reciprocal transfer of full-thickness skin grafts between mutant and control animals showed that the skin phenotype was tissue autonomous. The hairless cub/cub mcub/mcub mice show normal contact sensitivity responses to oxazolone. The similarity of the wavy coat phenotype to those of Tgfa and Egfr mutations and the map positions of cub and mcub suggest candidate genes that interact in the EGF receptor signal transduction pathway.
Ann Dermatol Venereol 2002 May;129(5 Pt 2):831-6
Alopecia areata: update on therapy
The management of patients with alopecia areata is obviously not restricted to the prescription of a treatment inducing hair growth. It requires thorough exploration (history of hair loss, treatments and concomitant pathologies), detailed clinical examination of the integument and palpation of the thyroid. The patient must, systematically, be given a simple explanation of his/her pathology, thus avoiding any feelings of mystery, hopelessness and guilt and hence paradoxically turning alopecia into "just another disease", even if flares are unpredictable and cannot always be treated. Innovations over the past few years have not met dermatologist's expectations: in particular immunosuppressors administered locally have not shown efficacy in human, as opposed to animal models of alopecia areata. Moreover, we must remain critical and rigorous with regard to "false" innovations: several recent publications are, methodologically, open to criticism. Older products provide clear descriptions of their indications and use, and relatively standardize the therapeutic approach to alopecia. Some of them lead to hair growth on the treated area: localized immuno-therapy that in certain cases induces hair growth where other treatments have failed. PUVA-therapy, however, because of frequent relapses on withdrawal and the characteristic recurrence of alopecia, rapidly leads to the use of high cumulative doses; balneo-PUVA therapy is effective with lower doses (PUVA-turban). Recently, UVB TL01 has shown efficacy in anecdotal studies. Local corticosteroids; notably injectable and anthralin, an old treatment which remains a useful therapeutic approach in alopecia areata plaques and in the ophiasic forms in children and adults. Finally, among the available treatment arms, systemic corticosteroids still have a place in recent extended forms: although still under experimentation, the bolus appears efficient during the primary episodes of alopecia areata, when administered within the first three months
Am Fam Physician. 2003 Mar 1;67(5):1007-14.
Alopecia in women.
Alopecia can be divided into disorders in which the hair follicle is normal but the cycling of hair growth is abnormal and disorders in which the hair follicle is damaged. Androgenetic alopecia is the most common cause of hair loss in women. Other disorders include alopecia areata, telogen effluvium, cicatricial alopecia, and traumatic alopecias. The diagnosis is usually based on a thorough history and a focused physical examination. In some patients, selected laboratory tests or punch biopsy may be necessary. Topically administered minoxidil is labeled for the treatment of androgenetic alopecia in women. Corticosteroids and other agents are typically used in women with alopecia areata. Telogen effluvium is often a self-limited disorder. Because alopecia can be devastating to women, management should include an assessment for psychologic effects.
Dermatol Surg. 2003 Mar;29(3):230-4; discussion 234.
Corrective hair restoration techniques for the aesthetic problems of temperoparietal flaps.
BACKGROUND: Temperoparieto-occipital flaps (Juri flap) and temperoparietal flaps (Elliott) were commonly performed in the previous decades but have fallen out of favor for the most part with the development of follicular unit hair transplantation. Besides high complication rates, these procedures created straight abrupt hairlines in many cases, posterior hair direction, hair density that was disproportionately thick, and blunt temperofrontal angles. OBJECTIVE: Because there are many patients who live with cosmetic deformities created by previous flap procedures, the objective of this article is to present a series of techniques that will restore these patients to normal cosmesis. METHODS: The techniques for amelioration of poor cosmesis secondary to flap procedures are (1) undulating follicular unit grafting anterior to the hairline, (2) removal of 2- to 3-mm cylinders of hair-bearing scalp at the anterior hairline, (3) removal of 2- to 3-mm cylinders of hair-bearing scalp from within the flap itself, and (4) appropriate fusiform excision techniques to create a normal temperofrontal angle. RESULTS: The combination of the aforementioned techniques has restored a very natural cosmesis in patients who have poor aesthetics after flap surgery. CONCLUSION: Many patients exist who have had Juri and Elliott flaps. Although the cosmetic deformities that are created from these flaps are difficult to improve, they can be ameliorated effectively through a series of maneuvers that are described in this article.
Hair growth is a sophisticated biological process, which is still not thoroughly 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.
Hair Million is an alternative solution to hair loss problems. Anecdotally, it shows prositive results and improvement especially for age-related hair thinning and hair loss for a fraction of people who take it. We do not know the mechanisms of action as to how Hair Million works to help stop hair loss, and promote hair growth.
We only know by anecdotal observations. There has been no clinical trials nor placebo controlled statistical analysis on the efficacy of Hair Million on hair loss and hair growth.
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