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Transgenic Res 2002 Jun;11(3):241-7
Inducible, reversible hair loss in transgenic mice.
Telogen effluvium is a common type of hair loss. Although the morphological changes associated with telogen effluvium have been well characterized, the underlying molecular mechanisms remain unknown, and no animal models have been developed. We report here that inducible transgenic mice expressing high levels of the transcription factor, tTA (tetracycline transactivator), plus a reporter luciferase gene, show a reversible hair loss phenotype. Skin of these mice exhibits an increase in the number of hair follicles at the telogen phase, but a decreased number of follicles at the anagen phase. These changes resemble skin pathology seen in patients with telogen effluvium, which suggests that the inducible transgenic mice may be useful as a model for this disorder. Moreover, since overexpression of several other transgenes failed to cause skin pathology, the present findings also indicate types of molecular abnormalities that may cause reversible hair loss.
Rev Med Chir Soc Med Nat Iasi 2001 Oct-Dec;105(4):760-2
Treatment of alopecia areata with diphencyprone
Topic immunotherapy in alopecia areata consist in a mild contact dermatitis with help of a chemical substances, with a high potency of sensitization, such as dinytroclorbenzenul (DNCB), squaric acid dibutylester (SADBE) and diphencypronil (DPCP). Eight patients with alopecia areata, 3 with mild form and 5 with severe form was treated with DPCP in acetone solution. We have obtained a positive result in 3 cases (37.5%), one with total regrows and 2 with partial regrows and a negative result in 5 cases, 3 with partial regrows and loss of the hair in other areas and 2 cases with no response after 24 weeks. We consider this method like an alternative therapy in severe alopecia areata resistant at other treatments.
Ther Umsch 2002 May;59(5):233-7
Alopecia areata
Alopecia areata is a frequent cause of hair loss. The origin of disease is not fully understood. However there are indications for a T-cell mediated autoimmune process. Genetic, immunologic and psychologic factors are important for the outbreak of disease. Most patients show localized patches of acute hair loss, where regrowth is observed spontaneously or with simple topical treatment within few months. In up to 15% of patients severe forms of disease can develop with total scalp (alopecia totalis) or scalp and body hair loss (alopecia universalis). There are only few known risk factors for development of a severe form. Although spontaneous remission is possible in these cases, it occurs rarely and treatment is difficult. Multifocal alopecia areata responds to intravenous high-dose corticosteroids. Topical immunotherapy with diphenylcyclopropenone (DPC) or PUVA therapy may be effective in longstanding and widespread disease. The unpredictable course of disease is a major handicap for clinical trials and treatment recommendations. Contact of patients with self-help organisations may be of help for coping with the disease.
Cell Struct Funct. 2003 Feb;28(1):97-104.
Autoimmune hair loss induced by alloantigen in C57BL/6 mice.
Exponentially growing Meth-A cells expressing H-2K(d).D (d) antigen were found to induce alopecia when injected intraperitoneally into normal C57BL/6 mice, which express the H-2K(b).D (b) antigen. However, the capacity to induce alopecia disappeared when Meth-A cells were treated with K252a, which inhibits protein kinases. Histologically, skin in affected areas showed dense mononuclear cell infiltration and a focal foreign-body giant-cell reaction in hair follicles. The subtyping of lymphocytes in peripheral blood demonstrated a significant difference between normal mice and Meth-A cell-injected mice. To further examine the mechanism by which the alloantigen induces alopecia, lymphocytes isolated from the peripheral blood of normal C57BL/6 mice were cultured in medium containing Meth-A cell homogenate, phytohemagglutinin (PHA) and recombinant mouse interleukin-2 (rm IL-2), and intravenously injected into normal C57BL/6 mice. The adoptive transfer of the lymphocytes induced alopecia in a similar way. These findings suggest that the protein kinase-modulated alloantigen induces alopecia by disturbing the immunological homeostasis, and that lymphokine-activated killer cells play an important role in induction of alopecia by cross-reacting with hair follicles.
Since hair growth is a complicated biological process, modern science has yet to grasp a complete picture. A number of traditional and alternative therapeutic methods that include drugs, surgery, and suppelements have been developed to help those who are losing hair. Unfortunately, none of these approaches are perfect for all hair loss problems due to the complexity of the phenomenon and diverse nature of the causes underlying hair loss. Also, most of chemical drugs and hair transplantation surgeries are accompanied by undesirable side effects.
DreamPharm offers Hair Million (have you heard?) to help treat hair loss problems. Numerous anecdotal cases have demonstrated that this herbal formula based on traditional Chinese herbs actually improves hair thinning and hair loss, a condition often associated with aging, for a significant fraction of people who take the formula regularly. It is not yet understood how Hair Million can stop hair loss and promote hair growth. No scientific research or placebo controlled clinical analysis has been performed on these herbs. Lack of scientific/clinical research is not uncommon in herbal arena. Nonetheless, there are two merits in this hair restoration herbal formula: Firstly, Hair Million is relatively inexpensive, and secondly, it is made of edible herbs that are known to be safe when consumed in regular quantities. Buy Propecia Online is a clinically tested prescription medication.
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