In:
The Journal of Clinical Endocrinology & Metabolism, The Endocrine Society, Vol. 104, No. 10 ( 2019-10-01), p. 4630-4638
Abstract:
Molecular mechanisms causing the broad phenotypic diversity of external masculinization in individuals with 45,X/46,XY mosaicism are poorly understood. Objective Analysis of androgen receptor (AR) expression and function as a putative influencing factor for the genital phenotype in patients with 45,X/46,XY mosaicism. Design Measurement of AR mRNA expression levels, AR activity [DHT-mediated APOD (apolipoprotein D) induction] and cellular 45,X/46,XY ratios in genital skin fibroblasts from individuals with 45,X/46,XY mosaicism and male reference individuals, and determination of the external virilization scale from individuals with 45,X/46,XY mosaicism. Setting University hospital endocrine research laboratory. Patients or Other Participants: 30 genital skin fibroblast cultures (GFs) from male reference individuals and 15 GFs from individuals with 45,X/46,XY mosaicism. Intervention None Main Outcome Measures Determination of AR mRNA expression and AR activity in male reference GFs and 45,X/46,XY GFs and correlation of the obtained data with the cellular 45,X/46,XY ratios and the patients’ external virilization scale. Results In 6 of 15 45,X/46,XY GFs, AR mRNA expression and AR activity were significantly lower compared with those in the 46,XY reference GFs. In this subgroup of reduced AR mRNA expression, a positive trend was seen between AR mRNA expression and the percentage of XY-positive cells. Furthermore, we found a positive correlation between AR activity and the external virilization scale in the 15 45,X/46,XY GF samples (P = 0.03). Conclusion Our results suggest that AR expression and AR activity might influence the phenotypic variability seen in patients with 45,X/46,XY mosaicism.
Type of Medium:
Online Resource
ISSN:
0021-972X
,
1945-7197
DOI:
10.1210/jc.2019-00108
Language:
English
Publisher:
The Endocrine Society
Publication Date:
2019
detail.hit.zdb_id:
2026217-6
detail.hit.zdb_id:
3029-6
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