توانایی آنتی اکسیدان آنزیمی کاتالاز در بهبود انجماد‌پذیری اسپرم اسب ترکمن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج

2 استاد، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران

3 استادیار، گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج و استادیار مؤسسۀ تحقیقات واکسن و سرم سازی رازی، کرج

4 استادیار، مؤسسۀ تحقیقات واکسن و سرم سازی رازی

5 کارشناس علوم آزمایشگاهی، مؤسسۀ تحقیقات واکسن و سرم سازی رازی

6 کارشناس دامپزشکی، مؤسسۀ تحقیقات واکسن و سرم سازی رازی

چکیده

هدف از انجام این آزمایش بررسی تأثیر پاداکسندة (آنتی­اکسیدان) آنزیمی کاتالاز بر بهبود انجمادپذیری اسپرم اسب­های ترکمن بود. در این پژوهش چهار سر نریان بالغ ترکمن با میانگین سنی هشت تا ده سال برای اسپرم­گیری به کار گرفته شد. پس از گرفتن منی و فرآوری آن در آزمایشگاه، اسپرم­های رقیق‌شده به گروه­های تیماری حاوی 0 (شاهد)، 100 (CAT100)، 150 (CAT150) و 200 (CAT200) واحد پاداکسندة کاتالاز در هر میلی­لیتر رقیق‌کنندۀ تقسیم‌شدۀ و با یک روش استاندارد، منجمد شدند. پس از یخ­گشایی برای همۀ تیمارها جنبایی، زنده‌مانی، یکپارچگی غشا، ناهنجاری کل و میزان پراکسیداسیون لیپیدی ارزیابی شد. نتایج نشان داد که افزودن 200 واحد بر میلی­لیتر کاتالاز به رقیق­کنندۀ اسپرم اسب، سبب بهبود فراسنجه‌های جنبایی کل، زنده­مانی، یکپارچگی غشایی و کاهش پراکسیداسیون لیپید، نسبت به گروه شاهد و دیگر گروه­های تیماری شد (05/0P<). همچنین تیمار 150 واحد بر میلی­لیتر کاتالاز نیز سبب بهبود جنبایی کل، زنده­مانی و کاهش پراکسیداسیون لیپید نسبت به گروه شاهد شد (05/0P<). همچنین نتایج نشان می­دهد که افزودن 100 واحد بر میلی­لیتر کاتالاز تأثیر مثبتی روی اغلب فراسنجه‌های کیفی اسپرم ندارد (05/0P>). بر پایۀ نتایج به‌دست‌آمده، تیمارهای آزمایشی تأثیری در کاهش اسپرم‌های نابهنجار نسبت به گروه کنترل نداشتند (05/0P>). درنتیجه می‌توان گفت که افزودن 200 واحد بر میلی‌لیتر کاتالاز به رقیق‌کننده، سبب بهبود انجمادپذیری اسپرم اسب­های ترکمن می­شود.

کلیدواژه‌ها


عنوان مقاله [English]

The potential of catalase as an enzymatic antioxidant to improve freezability of Turkmen stallions sperm

نویسندگان [English]

  • Afshin Seifi Jamadi 1
  • Ahmad Zareh 2
  • Hamid Kohram 3
  • Abolfazl Akbari 4
  • Mohsen Zamen 5
  • Abolfazl Vakhideh 6
1 Ph.D. Student, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
2 Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran
3 Assistant Professor, University College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran and Assistant Professor of Razi Vaccine and Serum Research Institute, Karaj, Iran
4 Assistant Professor, Razi Vaccine and Serum Research Institute, Karaj, Iran
5 Medical Laboratory Expert, Razi Vaccine and Serum Research Institute, Karaj, Iran
6 Veterinary Expert, Razi Vaccine and Serum Research Institute, Karaj, Iran
چکیده [English]

Four mature stallions were used to study the effect of enzymatic antioxidant catalase on freezability of Turkmen stallion's sperm. Collected semen from stallions were processed and pooled before being divided treatments (200×106  sperm/ml) and diluted with extenders supplemented with different levels of catalase [0 (control), 100 U/ml (CAT100), 150U/ml (CAT150) and 200U/ml (CAT200)]. Extended and supplemented semen's were frozen according to a standard protocol. After thawing, motility, viability, membrane integrity, total abnormality and lipid peroxidation were assessed. Results showed that addition of 200U/ml catalase could improve progressive and total motility, viability, membrane integrity and decreased lipid peroxidation compared to control and other levels of catalase (p<0.05). In addition, 150 U/ml catalase improved total motility, viability and decreased MDA concentration (p<0.05). However, the addition of 100 U/ml catalase had no significant effect on sperm quality (p>0.05). The results showed that different levels of catalase could not decreased total abnormality (p>0.05). We concluded that addition of 200U/ml catalase could improve freezability of Turkmen stallion’s sperm.

کلیدواژه‌ها [English]

  • Catalase
  • Free radicals
  • horse semen freezing
  • Lipid Peroxidation
  • Turkmen horse
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