| Assessment of human sperm protein tyrosine phosphorylation by immunocytochemistry in a clinical andrology laboratory. Preliminary data. | |
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MedLine Citation:
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PMID: 19634066 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We propose that evaluation of protein tyrosine phosphorylation (TP) status in ejaculated spermatozoa under capacitating conditions in an experiment that mimics "in vitro" the physiology of sperm from ejaculation through the female genital tract could potentially be used as a prognostic test for functional competence of sperm in fertilization. Our purpose was to elucidate whether there is a relation between conventional sperm parameters, occurrence of TP and pregnancy outcome obtained from intrauterine insemination (IUI). Semen samples were analyzed according to WHO criteria. TP levels were determined by immunocytochemistry under four different conditions: 1) ejaculated sperm, 2) postselection sperm, 3) postselection sperm incubated 5 h at 37 degrees C and 5% CO(2), and 4) postselection sperm incubated overnight at 37 degrees C and 5% CO(2). Data on sperm tyrosine phosphorylated proteins did not correlate with sperm concentration, progressive motility or normal sperm morphology. TP increased under capacitating conditions and showed a time dependent pattern except for five outlier cases. IUI was performed in 12 selected couples who had neither female nor male infertility factors. The three pregnancies had a time dependent pattern for TP. Of the unsuccessful cases, one had an outlier TP pattern. It appears that a TP time dependent pattern is necessary for fertilization. |
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Authors:
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G R Mendeluk; L M Sardi-Segovia; P H Chenlo; M N Pugliese; H Repetto; S Curi; J Ariagno; E Prentki Santos; P Paez; E G Passanante; L A Palaoro |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biotechnic & histochemistry : official publication of the Biological Stain Commission Volume: 84 ISSN: 1473-7760 ISO Abbreviation: Biotech Histochem Publication Date: 2009 Dec |
Date Detail:
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Created Date: 2010-05-27 Completed Date: 2010-06-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9107378 Medline TA: Biotech Histochem Country: England |
Other Details:
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Languages: eng Pagination: 321-8 Citation Subset: IM |
Affiliation:
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Department of Clinical Biochemistry, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, Argentina. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Andrology* Ejaculation Female Fertilization in Vitro Humans Immunohistochemistry / methods* Infertility, Male / metabolism Laboratories* Male Phosphorylation Pregnancy Pregnancy Outcome Prognosis Sperm Count Spermatozoa / cytology, metabolism*, physiology Tyrosine / metabolism* |
| Chemical | |
Reg. No./Substance:
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55520-40-6/Tyrosine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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