Title: Contribution of androgen receptor sensitivity to the relation between testosterone and sexual desire: An exploration in transsexual women
Authors: Elaut, E> ×
Bogaert, V.
De Cuypere, G.
Wyers, S.
Gijs, L.
Kaufman, J.
T'Sjoen, G. #
Issue Date: Jan-2010
Publisher: Published for the Italian Society of Endocrinology by Editrice Kurtis
Series Title: Journal of Endocrinological Investigation vol:33 issue:1 pages:37-41
Abstract: Background: Low sexual desire is present in 1/3 of male-to-female transsexuals (post-operative male-to-female transsexual persons on estrogen replacement). Several studies report lower endogenous testosterone (T) levels in this group compared to community dwelling women. However, no relationship between T and sexual desire has been found in male-to-female transsexuals. Considering its role in androgen sensitivity, cytosine-adenine-guanine (CAG) trinucleotide repeat sequence in the androgen receptor (AR) might modify the relationship between T levels and sexual desire in male-to-female transsexuals. Aim: This study aims to assess the potential contribution of the number of CAG repeats in the association between T and sexual desire in male-to-female transsexuals. Material, subjects, and methods: Thirty-four post-operative male-to-female transsexuals participated in a cross-sectional study. The Sexual Desire Inventory, a questionnaire measuring sexual desire, was completed. Serum levels of total (TT) and free T (FT), DHEA-S, SHBG, and LH were measured in morning blood samples. AR gene CAG repeat length was determined by automated DNA fragment analysis of exon 1 of the AR gene. Results: The CAG repeat length ranged from 14 to 28 with a median of 21. CAG polymorphism was correlated with FT (r=0.389; p=0.023) but not with TT (r=0.191; p=0.280). The observed interaction between TT and CAG was significant only for solitary sexual desire (p=0.002). The interaction of CAG repeats and FT on sexual desire failed to reach significance. Conclusions: We could not establish that CAG repeat length is a consistent modulating factor in the relationship between TT or FT and sexual desire in male-to-female transsexuals.
ISSN: 1720-8386
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Sexual, Pelvic, Reproductive and Family Studies (-)
× corresponding author
# (joint) last author

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