Expression pattern of human hair keratin basic 1 (hHb1) in hair follicle and pilomatricoma.

Abstract:

:Using in situ hybridization, human hair keratin basic 1 (hHb1) gene expression was investigated in human normal scalp. hHb1 transcripts were specifically detected in the cortical cells of hair shaft but neither in the outer and inner root sheaths, nor in the hair cuticle or the medulla. hHb1 expression was detected strongly in cortical cells located from the beginning of the keratogenous zone up to the isthmus. These data specify the localization of hHb1 expression. Furthermore, neoplasms with follicular differentiation, including trichoblastoma, trichoepithelioma, pilomatricoma, pilar carcinoma and basal-cell carcinoma, were analysed for hHb1 gene expression. One of the 4 pilomatricoma specimens examined exhibited a very high level of hHb1 transcripts. Interestingly, this labeling was specifically associated to a transitional cell layer en route to trichocytic differentiation, providing evidence that in pilomatricoma, epithelial germ cells can differentiate towards hair shaft keratinocytes before evolving in ghost cells.

journal_name

Exp Dermatol

journal_title

Experimental dermatology

authors

Régnier CH,Asch PH,Grosshans E,Rio MC

doi

10.1111/j.1600-0625.1997.tb00152.x

subject

Has Abstract

pub_date

1997-04-01 00:00:00

pages

87-90

issue

2

eissn

0906-6705

issn

1600-0625

journal_volume

6

pub_type

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