Quantification of cyclin A1 and glyceraldehyde-3-phosphate dehydrogenase expression in testicular biopsies of infertile patients by fluorescence real-time RT-PCR.
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| Abstract |
The objective of this study was to establish a classification of meiotic disorders by detection of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) and cyclin A1 mRNA in patients presenting with non-obstructive azoospermia. GAPDH and cyclin A1 expression levels were detected in 37 histologically classified testicular tissue specimens by one-line RT-PCR. Levels of cyclin A1 expression (NCyclinA1) were high in tissue specimens with full spermatogenesis [3.519 +/- 3.141 (mean +/- SD)] but only minimal in those without haploid germ cells. A lack of cyclin A1 expression was seen in most sertoli-cell-only syndrome (SCOS) specimens. The criteria for an ideal internal standard were only partially met by GAPDH, as we detected decreased expression in tissue samples with maturation arrest [(268.2 +/- 106.2 relative gene expression (mean +/- SD)] and SCOS (201.7 +/- 95.2) compared to those with normal histological findings (325.1 +/- 129.3). It was concluded that the level of cyclin A1 mRNA expression predicts meiotic disorders during spermatogenesis. GAPDH is not an ideal internal standard for specific gene expression in testicular tissue specimens.
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| Authors | Mark Schrader, Stuart Ravnik, Carsten Müller-Tidow, Markus Müller, Bernd Straub, Sven Diedrichs, Hubert Serve, Kurt Miller |
| Journal | International journal of andrology (Int J Androl) Vol. 25 Issue 4 Pg. 202-9 (Aug 2002) ISSN: 0105-6263 [Print] England |
| PMID | 12121569 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't) |
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