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Hum. Reprod. Advance Access published online on November 18, 2004
Human Reproduction, doi:10.1093/humrep/deh547
© 2004 by European Society of Human Reproduction and Embryology
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Received May 4, 2004
Revised July 8, 2004
Accepted September 10, 2004

Article

DNA sequence variations of the entire anti-Müllerian hormone (AMH) gene promoter and AMH protein expression in patients with the Mayer-Rokitanski-Küster-Hauser syndrome

P. Oppelt 1 *, P.L. Strissel 2 *, A. Kellermann 1, S. Seeber 3, A. Humeny 3, M.W. Beckmann 1, and R. Strick 1*

1 Department of Gynaecology and Obstetrics, University of Erlangen-Nuremberg, Erlangen, Germany
2 Department of Gynaecology and Obstetrics, at the University of Erlangen-Nuremberg, Erlangen, Germany
3 Department of Biochemistry at the University of Erlangen-Nuremberg, Erlangen, Germany

* To whom correspondence should be addressed.
R. Strick, E-mail: Reiner.Strick{at}gyn.imed.uni-erlangen.de


  Abstract

BACKGROUND: The etiology of the Mayer-Rokitanski-Küster-Hauser (MRKH) syndrome, where congenitally the Müllerian ducts fail to develop into the uterus, cervix and upper vagina, along with other malformations, is unresolved. Anti-Müllerian hormone (AMH) signal transduction inducing the degradation of Müllerian ducts in males is implicated in the MRKH syndrome. This study examined if DNA sequence variations are responsible for the activation of AMH and aberrant hormone levels in MRKH patients. METHODS: The entire AMH promoter and 3' regulatory elements of the constitutively expressed splicing factor SF3a2 were sequenced in 30 MRKH patients and genotyped in 48 control individuals using matrix-assisted laser desorption/ionization-time-of-flight mass spectronomy. Ovarian AMH promoter function was correlated with protein expression in plasma and peritoneal fluid of MRKH patients. RESULTS: Of six identified AMH promoter variations, two at positions -639 (SP1-binding site) and -210 [steroidogenic factor (SF)1-binding site] were homozygote in 73% of patients, and 69% of control individuals, destroying the SP1-binding site. AMH protein levels in plasma and peritoneal fluid from patients were equivalent to control individuals, however in three patients plasma levels were abnormally high. CONCLUSIONS: AMH is an important indicator for ovarian function. AMH promoter sequence variations or the previously proposed SF3a2-AMH fusion co-transcripts cannot be responsible for aberrant AMH expression leading to Müllerian duct degradation.

Keywords: anti-Müllerian hormone; DNA polymorphism; ionization-time-of-flight; matrix-assisted laser desorption; Mayer-Rokitanski-Küster-Hauser syndrome; promoter elements.

*These authors contributed equally to this work


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