Steroidogenic enzymes, their related transcription factors and nuclear receptors in human sebaceous glands under normal and pathological conditions

Abdullah, Azmahani (2014) Steroidogenic enzymes, their related transcription factors and nuclear receptors in human sebaceous glands under normal and pathological conditions. Journal of Steroid Biochemistry & Molecular Biology, 144. pp. 268-279. ISSN 0960-0760, e-ISSN: 1879-1220

[img] Text
Steroidogenic enzymes, their related transcription factors and nuclear receptors in human sebaceous glands under normal and pathological conditions.pdf
Restricted to Registered users only

Download (4Mb) | Request a copy

Abstract

The sebaceous gland is a major site of steroid synthesis in human skin, but details of the status of steroidogenic enzymes and their regulation in human sebaceous glands under normal and pathological conditions have rarely been reported. Therefore, in this study, we examined the status of steroidogenic enzymes, sex steroid receptors and transcription factors in human sebaceous glands under normal and pathological conditions to explore their possible roles in in situ steroid production in human skin. Immunohistochemical analysis was performed in a total of 59 human skin specimens, including 22 normal human sebaceous glands,12 with sebaceous nevus,12 with sebaceous gland hyperplasia, 3 with sebaceoma and 10 with sebaceous carcinoma. Immortalised human SZ95 sebocytes were treated with forskolin or vehicle for 3 h, 6 h,12 h or 24 h, and the mRNA levels of steroidogenic enzymes were evaluated at each time point using quantitative RT-PCR (qPCR). The results of immunohistochemistry demonstrated the immunoreactivity of 3b-HSD1, CYP11A1, StAR, 17b-HSD5, CYP17A1, 5a-red1, PRB, AR and NGFI-B in normal human sebaceous gland, with lower levels of expression in pathological sebaceous glands. The results of the in vitro study also indicated that the expression levels of 3b-HSD1, CYP11A1, StAR, 5a-red1 and NGFI-B were elevated by forskolin. 3b-HSD1 and other steroidogenic enzymes were expressed in sebaceous glands resulting in in situ androgen and progesterone synthesis and their functions.

Item Type: Article
Keywords: Sebaceous gland, Steroidogenic enzymes, cAMP
Subjects: R Medicine > RB Pathology
Faculty / Institute: Faculty Of Health Sciences
Depositing User: Unnamed user with email azmahani@unisza.edu.my
Date Deposited: 19 Oct 2014 09:17
Last Modified: 27 Apr 2015 03:00
URI: http://erep.unisza.edu.my/id/eprint/1585

Actions (login required)

View Item View Item