Phorbol myristate acetate induces ruffling of the acrosome of human sperm
| Autor: | H.W. Gordon Baker, Ivica Grković, C. Garrett, Mirjana Martic, De Yi Liu, Marjorie Dunlop |
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| Rok vydání: | 2002 |
| Předmět: |
Male
Protein kinase C Actin Acrosomal ruffing Human acrosome reaction endocrine system Cytochalasin D Indoles Cytochalasin B Polymers Acrosome reaction Biology Maleimides Andrology chemistry.chemical_compound Human fertilization medicine Humans Enzyme Inhibitors Zona pellucida Acrosome Cells Cultured Protein Kinase C Zona Pellucida reproductive and urinary physiology urogenital system Acrosome Reaction Obstetrics and Gynecology Pyrimidine Nucleosides Sperm Actins Microscopy Electron medicine.anatomical_structure Reproductive Medicine chemistry Biochemistry embryonic structures Microscopy Electron Scanning Oocytes Tetradecanoylphorbol Acetate Female |
| Zdroj: | Fertility and Sterility. 78:128-136 |
| ISSN: | 0015-0282 |
| DOI: | 10.1016/s0015-0282(02)03166-7 |
| Popis: | Objective: To determine the effect of phorbol myristate acetate (PMA) on human acrosome morphology and the acrosome reaction. Design: Controlled experiments on sperm and unfertilized oocytes from volunteers. Setting: Academic research and teaching tertiary hospital. Patient(s): Sperm samples were from normospermic men and unfertilized oocytes from IVF patients. Main Outcome Measure(s): Acrosome morphology was assessed by using transmission and scanning electron microscopy. The acrosome reaction was assessed by using fluorescein-labeled Pisum sativum agglutinin. Result(s): PMA induced acrosome ruffling, indicated by a marked wavy appearance. A significant correlation was found between PMA-induced ruffling and PMA enhancement of the zona pellucida-induced acrosome reaction. Protein kinase C inhibitors bisindolylmalemide I and sangivamycin had no effect on PMA-induced acrosomal ruffling, but actin polymerization inhibitors cytochalasin B and cytochalasin D significantly decreased PMA-induced acrosomal ruffling. In contrast, bisindolylmalemide I, sangivamycin, cytochalasin B, and cytochalasin D significantly decreased both the zona pellucida-induced acrosome reaction and the PMA enhancement of the zona pellucida-induced acrosome reaction. Conclusion(s): PMA-induced acrosomal ruffling involves actin polymerization, possibly independent of conventional protein kinase C. Acrosomal ruffling is involved in the PMA augmentation of the zona pellucida-induced acrosome reaction. |
| Databáze: | OpenAIRE |
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