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rutin
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Dermatology 2002;205(2):108-10
Kenogen. A new phase of the hair cycle?
BACKGROUND: A novel phenomenon has been described by the phototrichogram: the emptiness of the follicle after teloptosis. We called this phenomenon kenogen, from the Greek kappaepsilonnuovarsigma, 'empty'. OBJECTIVE: To describe the kenogen phase in its details. METHODS: Analysis of the existing literature. RESULTS: The original observation in 2 women was confirmed in 10 balding and non-balding males studied for 14 years in whom kenogen lasted about 4 months increasing up to about 7 months and affecting 80% of all hair cycles. In 2 women with progressing androgenetic alopecia studied for 2 years, kenogen involved 22% of the hair follicles, lasting from 3 months to 1 year. In a prepubertal boy studied for 1 year, it involved 8% of hairs and lasted about 2 months. CONCLUSION: During kenogen, the hair follicle rests physiologically, but duration and frequency are greater in androgenetic alopecia, possibly accounting for baldness. In addition to the classical cycle, the hair follicle may follow an alternative route during which the telogen phase, not accompanied by a coincident new early anagen, ends with teloptosis leaving the follicle empty.
Br J Dermatol 2002 Aug;147(2):222-9
Langerhans cells that express matrix metalloproteinase 9 increase in human dermis during sensitization to diphenylcyclopropenone in patients with alopecia areata.
BACKGROUND: We know little of the initial events during the sensitization phase of contact allergy in humans. Alopecia areata (AA), a disease of unknown pathogenesis characterized by patchy hair loss, may be treated by inducing contact allergy to diphenylcyclopropenone (DPC), later followed by its topical application. OBJECTIVES: To learn more about the initial events during sensitization in human skin, we studied the early events during induction of contact allergy to DPC in patients with AA. METHODS: DPC 2% and sodium lauryl sulphate (SLS) 4% were applied on the backs of eight patients with AA. Punch biopsies were taken 6 and 24 h after application. The biopsies were snap-frozen and cryostat sections were evaluated with immunohistochemistry using antibodies against CD1a, HLA-DR, CD3, CD54 and matrix metalloproteinase 9 (MMP-9). RESULTS: After 24 h all subjects exhibited erythema on the DPC-treated areas. Histological evaluation of biopsies from these areas showed hydropic degeneration and a significantly increased number of MMP-9+ cells in the dermis (P < 0.0005). The MMP-9+ cells were identified with double immunofluorescence staining as CD1a + Langerhans cells. The expression of the other markers studied remained unaltered irrespective of treatment, including treatment with SLS. CONCLUSIONS: Our findings show that DPC induces an irritant reaction leading to an increased number of MMP-9+ CD1a+ cells in the dermis during the initial phase of sensitization.
Ther Umsch 2002 May;59(5):243-50
Scarring alopecias
The irreversibility and the possible important cosmetic consequences of scarring alopecia demand special diagnostic attention in order to promptly attain a precise diagnosis and specific treatment. Scarring alopecias are either due to permanent damage to essential parts of the hair follicle or destruction of the entire hair follicle. They are classified into the categories of primary scarring alopecias, where the hair follicle is the primary target of destruction, and secondary scarring alopecias, where the follicular damage results incidentally from events around impinging on the follicular unit. The differential diagnosis of the more common primary scarring alopecias, e.g. follicular lichen planus, chronic cutaneous lupus erythematosus and folliculitis decalvans, can be difficult when based only on anamnestic and clinical findings. The scalp biopsy is essential for appropriate nosologic classification and has prognostic relevance. The primary therapeutic goal is to halt progression of the irreversible process as early as possible by means of immunomodulatory, immunosuppressive or antiinfectious agents, respectively.
Br J Nurs. 2003 May 8-21;12(9):550-8.
Case study of alopecia universalis and web-based news groups.
This article presents findings from an 18-month case study of a web-based news group used by individuals with alopecia universalis. Content analysis of 228 episodes of web-based communication that occurred in relation to themes of discussion was undertaken, supported by the use of concept mapping (Northcott, 1996). Analysis identified a core concept relating to that of a community of shared experience together with four supportive themes. The themes were the search for understanding and meaning, carrying on, seeking balance between past, present and future, and relating to new self, others, and the world. The article discusses the increased growth in the use of the web as a vehicle for exploring health concerns and the specific ethical and methodological issues raised by research in this area.
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.
Hair Million is an alternative solution to hair loss problems. Anecdotally, it shows prositive results and improvement 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 HairMillion on hair loss and hair growth.
Bottom line is that there are two merits in this hair restoration herbal formula:
Firstly, Hair Million is rather inexpensive, and secondly, it is made of well known herbs that are safe when consumed in regular quantities. For clinically tested prescription medication, try Propecia.
Related Web resources:
What is hair?
Curly Hair
Biology of hair growth and development.
The phenomenon of hair loss.
Methods and treatments for hair loss and baldness.
Drugs and hair transplantation surgery for hair loss and baldness.
Hair loss linked to other health problems.
Baldness by choice and fashion.
Alopecia info.
Alopecia treatment info.
Alopecia treatment info.
Hair care info.
Hair loss and alopecia research articles: abstracts and source links.
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.
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