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The UDP Glucuronosyltransferase 2B15 D85Y and 2B17 Deletion Polymorphisms Predict the Glucuronidation Pattern of Androgens and Fat Mass in Men.

Journal article
Authors Charlotte Swanson
Dan Mellström
Mattias Lorentzon
Liesbeth Vandenput
Jenny Jakobsson
Anders Rane
Magnus K Karlsson
Östen Ljunggren
Ulf Smith
Anna-Lena Eriksson
Alain Bélanger
Fernand Labrie
Claes Ohlsson
Published in Journal of clinical endocrinology and metabolism
Volume 92
Issue 12
Pages 4878-82
ISSN 0021-972X
Publication year 2007
Published at Institute of Medicine, School of Public Health and Community Medicine
Institute of Medicine, Department of Internal Medicine
Institute of Medicine, Department of Molecular and Clinical Medicine
Pages 4878-82
Language en
Subject categories Medical and Health Sciences, Endocrinology


Context: Previous in vitro studies have demonstrated that the UDP glucuronosyltransferase (UGT) 2B15 and UGT2B17 glucuronidate androgens and their metabolites. Objective: To determine in vivo if the UGT2B15 D(85)Y and the UGT2B17 deletion polymorphisms predict androgen glucuronidation and body composition. Participants: Two population-based cohorts including young adult (n=1068, age=18.9 years) and elderly (n=1001, age=75.3 years) men. Main Outcome Measures: Serum and urine levels of testosterone (T) and dihydrotestosterone (DHT) measured by GC-MS and serum levels of the major glucuronidated androgen metabolites androstane-3alpha,17beta-diol(androstanediol)-3glucuronide, androstanediol-17glucuronide and androsterone-glucuronide measured by LC-MS/MS. Body composition measured by DXA. Results: Both the UGT2B15 D(85)Y and the UGT2B17 deletion polymorphisms were associated with serum levels of androstanediol-17glucuronide (p<0.001) but not with levels of androstanediol-3glucuronide or androsterone-glucuronide in both cohorts. Glucuronidation of T and DHT was associated with the UGT2B17 deletion but not with the UGT2B15 D(85)Y polymorphism, suggested by strong associations between the deletion polymorphism and urine levels of these two hormones. Both polymorphisms were associated with several different measures of fat mass (p<0.01). The UGT2B17 deletion polymorphism was associated with insulin sensitivity (p<0.05) as indicated by the HOMA index. Conclusions: The UGT2B15 D(85)Y and the UGT2B17 deletion polymorphisms are both predictors of the glucuronidation pattern of androgens/androgen metabolites. Our findings indicate that UGT2B17 is involved in 17 glucuronidation of mainly T but also of DHT and androstanediol and that UGT2B15 is involved in the 17 glucuronidation of androstanediol. Furthermore, these two polymorphisms are predictors of fat mass in men.

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