This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revision | Next revisionBoth sides next revision | ||
home:diseases:alopecia [02.17.2019] – [Role of vitamin D] sallieq | home:diseases:alopecia [02.18.2019] – [Baldness (alopecia)] sallieq | ||
---|---|---|---|
Line 6: | Line 6: | ||
__In search of the "hair cycle clock": | __In search of the "hair cycle clock": | ||
- | PAUS Ralf ; FOITZIK Kerstin ; | ||
- | Résumé / Abstract | ||
- | The hair follicle, a unique characteristic of mammals, represents a stem cell-rich, prototypic neuroectodermal-mesodermal interaction system. This factory for pigmented epithelial fibers is unique in that it is the only organ in the mammalian body which, for its entire lifetime, undergoes cyclic transformations from stages of rapid growth (anagen) to apoptosis-driven regression (catagen) and back to anagen, via an interspersed period of relative quiescence (telogen). While it is undisputed that the biological " | ||
- | Revue / Journal Title | ||
- | Differentiation | ||
- | Source / Source | ||
- | 2004, vol. 72, no9-10, pp. 489-511 [23 page(s) (article)] | ||
- | Langue / Language | ||
+ | The hair follicle, a unique characteristic of mammals, represents a stem cell-rich, prototypic neuroectodermal-mesodermal interaction system. This factory for pigmented epithelial fibers is unique in that it is the only organ in the mammalian body which, for its entire lifetime, undergoes cyclic transformations from stages of rapid growth (anagen) to apoptosis-driven regression (catagen) and back to anagen, via an interspersed period of relative quiescence (telogen). | ||
- | __ | + | While it is undisputed that the biological " |
- | Prevalence of male and female pattern | + | |
- | Gan DC, Sinclair RD. | + | Here, we sketch basic background information and key concepts that one needs to keep in mind when exploring the enigmatic "hair cycle clock" |
- | Department of Dermatology, University | + | (({{pubmed> |
- | Maryborough, | + | |
+ | |||
+ | __Prevalence of male and female pattern hair loss in Maryborough.__ | ||
+ | |||
+ | |||
+ | Maryborough, | ||
+ | |||
+ | Additional data was collected on dandruff, presence of gray hair. Supplementary questionnaires were sent to 340 children aged 5-9, attending a coeducational primary school. 1456 adults (34.1%) responded to the questionnaire. 396 attended for examination. The prevalence of androgenetic alopecia (AGA) increased with advancing age. 98.6% of men had bitemporal recession and severity was significantly associated with vertex and mid-frontal hair loss (p <0.01) but not age (p = 0.06). In all, 64.4% of women had bitemporal hair loss, and similar to men there was a significant association with mid-frontal hair loss (p =0.042) but not age (p =0.467). One hundred and forty children with completed questionnaires were examined. All 72 females and 68 males were assessed as stage 1 on the mid-line part and with no bitemporal recession (frequency stage 1 = 100%, 95% CI (confidence interval) 97.4%-100%). A significant but weak positive association existed between presence of gray hair and history of dandruff (p< | ||
| |