کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10800983 | 1054720 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Acrosome reaction in bovine spermatozoa: Role of reactive oxygen species and lactate dehydrogenase C4
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
زیست شیمی
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![عکس صفحه اول مقاله: Acrosome reaction in bovine spermatozoa: Role of reactive oxygen species and lactate dehydrogenase C4 Acrosome reaction in bovine spermatozoa: Role of reactive oxygen species and lactate dehydrogenase C4](/preview/png/10800983.png)
چکیده انگلیسی
After capacitation, mammalian spermatozoa accomplish the acrosome reaction (AR), a well-controlled exocytosis process crucial to fertilize mature oocytes that involves several protein kinases such as protein kinase A (PKA), C (PKC), and tyrosine kinase (PTK). Reactive oxygen species (ROS) are involved in both bovine sperm capacitation and AR. Lactate dehydrogenase C4 (LDH-C4) was associated with bovine and mouse sperm capacitation. Our aims were to study the participation of LDH-C4 to contribute with the status redox required for AR and the role of ROS in the regulation of PKA, PKC, and PTK involved in the exocytotic event. Sodium oxamate, an inhibitor of LDH-C4, prevented the AR induced by lysophosphatidylcholine (LPC) or NADH. Hydrogen peroxide promoted and superoxide dismutase (scavenger of superoxide), catalase (scavenger of hydrogen peroxide), diphenyleneiodinum, diphenyliodonium, cibacron blue, and lapachol (inhibitors of NADPH oxidase) prevented the AR, suggesting that ROS and a sperm oxidase are involved in the AR induced by these compounds. Inhibitors of PKA, PKC, and PTK also prevented the AR induced by LPC or NADH, suggesting the involvement of these kinases in the process. These results suggest that LDH-C4 may participate in the regulation of the redox status required to achieve the AR in bovine spermatozoa and that ROS are key elements in the regulation of protein kinases associated with the AR process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimica et Biophysica Acta (BBA) - General Subjects - Volume 1726, Issue 1, 30 October 2005, Pages 96-101
Journal: Biochimica et Biophysica Acta (BBA) - General Subjects - Volume 1726, Issue 1, 30 October 2005, Pages 96-101
نویسندگان
C. O'Flaherty, E. Breininger, N. Beorlegui, M.T. Beconi,