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・ Hyperoctahedral group
・ Hyperodapedon
・ Hyperodapedontinae
・ Hyperoffice
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・ Hyperolius acuticeps
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・ Hyperkalemia
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Hyperkeratinization
・ Hyperkeratosis
・ Hyperkeratotic cutaneous capillary-venous malformation
・ Hyperkeratotic hand dermatitis
・ Hyperkind
・ Hyperkinesia
・ Hyperkinesis
・ Hyperkinetic disorder
・ Hyperkähler manifold
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・ Hyperlais
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・ Hyperlais conspersalis
・ Hyperlais cruzae
・ Hyperlais dulcinalis


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Hyperkeratinization : ウィキペディア英語版
Hyperkeratinization

Hyperkeratinization (hyperkeratinisation in British English) is a disorder of the cells lining the inside of a hair follicle. It is the normal function of these cells to detach or slough off (desquamate) from the skin lining at normal intervals. The dead cells are then forced out of the follicle (primarily by the growing hair). However, in hyperkeratinization, this process is interrupted and a number of these dead skin cells do not leave the follicle because of an excess of keratin, a natural protein found in the skin. This excess of keratin, which is influenced by genetics, results in an increased adherence/bonding of dead skin cells together. This cohesion of cells will block or "cap" the hair follicle (leading to keratosis pilaris) or clog the sebaceous/oil duct (leading to acne). Pathogens may also play a role in causing, perpetuating, or simply taking advantage of this phenomenon, such as virulent sub-strains of ''Propionibacterium acnes'' and irregular migration of ''Staphylococcus epidermidis'' from the outer surface of the skin into the follicle, where commensal strains of ''P. acnes'' exclusively habitate. It itches mildly at times, and strongly at others. Very often it cannot be felt at all.
==See also==

*hyperkeratosis

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Hyperkeratinization」の詳細全文を読む



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