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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.
J Dermatol 2002 Oct;29(10):653-6
Idiopathic CD4+ T lymphocytopenia associated with disseminated flat warts and alopecia areata.
Idiopathic CD4+ T lymphocytopenia is a very rare condition characterized by persistent depletion of circulating CD4+ T lymphocytes, without evidence of HIV or HTLV infection, or other identifiable causes of immunodeficiency. The syndrome can present with dermatological diseases, including viral, fungal and bacterial infections, as well as Kaposi's sarcoma, epithelial cell malignancies, lymphoma and inflammatory dermatoses. We report the case of a 47-year-old woman with idiopathic CD4+ T lymphocytopenia who presented with a 10-year history of disseminated and refractory flat warts from which human papillomavirus type 3 DNA was identified. The patient also had alopecia areata.
Ther Umsch 2002 May;59(5):217-22
Diffuse hair loss in women
The complaint "Doctor, I am losing my hair" represents a particular challenge to the physician, and involves making a specific diagnosis, selecting an appropriate therapy, and expressing empathy for the patient's anxiety. Diffuse hair loss in women was formerly classified as an entity of its own. Since the identification of female pattern hair loss, most cases have been recognized to be due to androgenetic alopecia, often during phases of life characterized by fluctuations of sexual hormone levels or in connection with intake or cessation of hormonal therapy. The most difficult differential diagnosis includes androgenetic alopecia, chronic telogen effluvium, and psychogenic pseudo efflvuium. Androgenetic alopecia is due to androgen-induced, non-synchronized, progressive shortening of the hair growth cycle and gradually leads to thinning of the central scalp area. Idiopathic chronic telogen effluvium typically occurs in women, starting abruptly without a recognizable initiating factor, and involves the entire scalp area with increased shedding of telogen hair. It is believed to be due to synchronization phenomena of the cyclic hair growth. Psychogenic pseudo effluvium affects fashion-oriented, self-conscious women suffering of a discrepancy between the actual state of their hair and idealized expectations. Later the problem of age-related hair thinning oft becomes a surrogate for the more generalized problem of senescence. Rational therapy of androgenetic alopecia aims at blocking the androgen effect on hair follicles with estrogens and antiandrogens or at pharmacologically reversing vellus hair transformation with topical minoxidil. In contrast, women with idiopathic chronic telogen effluvium should be reassured that their problem is rather a state of exaggerated "hair shedding" than of actual "hair loss".
J Invest Dermatol. 2003 May;120(5):771-5.
Major locus on mouse chromosome 17 and minor locus on chromosome 9 are linked with alopecia areata in C3H/HeJ mice.
Alopecia areata is an autoimmune disease that targets actively growing (anagen) hair follicles in humans, mice, rats, dogs, horses, and cattle. C3H/HeJ mice spontaneously develop alopecia areata from 5 mo of age and older in females and later in males. Frequency of disease approached 20% in a colony by 18 mo of age. C57BL/6J mice do not develop alopecia areata. A segregating F2 population of female mice (n=1096) was generated from crossing these two strains. Alopecia areata (n=138) and clinically normal (n=214) mice were genotyped at 12 mo of age using 211 microsatellite probes. The peak logarithm of odds ratio score on mouse chromosome 17 (10.9) was around marker D17Mit134 at 16.9 cM from the centromere. The mouse histocompatibility locus, H2, the mouse equivalent of human leukocyte antigen in humans, was a likely candidate. Twelve-month-old C3H.SW-H2b/SnJ mice (C3H/HeJ congenic mice in which the H2k purported susceptibility locus was replaced with the H2b purported resistance locus) did not develop alopecia areata, supporting this locus as being important in alopecia areata. A suggestive linkage was also found on mouse Chromosome 9 (logarithm of odds ratio score 2.0) around D9Mit206, 20 cM from the centromere. The interval on mouse Chromosome 17 contains several orthologous genes potentially associated with human alopecia areata.
Are you losing hair gradually or all of a sudden ? Hair Million is a herbal formula to address hair loss problems.
Numerous anecdotal cases demonstrate that this herbal formula based on Chinese herbs actually improves the age-related
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The biology of hair growth is complex and a field still in progress. We don't know how Hair Million stops hair loss,
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DHEA has been suggested to provide numerous potential benefits. DHEA (or dehydroepiandrosterone) is converted into androgens (male hormones)
or estrogens (female hormones) in the cells.
Our bodies produce decreasing amount of DHEA as we get older.
various health benefits: To deter aging,
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