1 - دانش آموخته مامایی و بیماریهای تولید مثل دامپزشکی، دانشکدة علوم تخصصی دامپزشکی، دانشگاه آزاد اسلامی واحد علوم و تحقیقات تهران، تهران، ایران
2 - گروه علوم درمانگاهی، دانشکدة دامپزشکی، دانشگاه تهران، تهران، ایران
3 - گروه علوم درمانگاهی، دانشکدة دامپزشکی، دانشگاه تهران، تهران، ایران
4 - گروه علوم درمانگاهی، دانشکدة دامپزشکی، دانشگاه آزاد اسلامی واحد تبریز، تبریز، ایران
5 - گروه علوم درمانگاهی، دانشکدة دامپزشکی، دانشگاه شهرکرد، شهرکرد، ایران
تاریخ دریافت : 1387/08/09
تاریخ پذیرش : 1387/10/30
تاریخ انتشار : 1387/09/01
هدف از این مطالعه بررسی اثرات سه غلظت اسید سیتریک بر الگوی حرکتی اسپرمهای اپیدیدیمی گاو بوده است. برای اینکار 50 جفت بیضة گاو از کشتارگاه صنعتی ارومیه بلافاصله بعد از کشتار جمعآوری و در کنار یخ 5 درجه سانتیگراد به آزمایشگاه انتقال داده شد. اسپرمهای ناحیة دم اپیدیدیم با چند برش در ناحیة بدون رگ آن جمعآوری و به محیط Hams F10 با 10% سرم گوسالة جنینی و دمای 37 درجة سانتیگراد انتقال و پس از 15 دقیقه انکوباسیون در انکوباتور CO2 شمارش گردید و رقتهای 50 میلیون اسپرم در میلیلیتر آماده و در محدودة pH نرمال اسپرم (7/6 الی 4/7) سه غلظت اسید سیتریک 1/0، 2/0 و 3/0 نرمال (غلظت 1 نرمال اسید سیتریک، 7 میلیگرم در 1 میلیلیتر مایع منی گاو است) تهیّه شد و به اپندورفهای حاوی اسپرم اضافه گردید و در دقایق 15،30، 45، 60، 90، 120، 180، 240 و360 الگوی حرکتی اسپرمهای اپیدیدیمی با روش کاسا ارزیابی شد. دادههابا نرمافزارSPSS ویرایش 15 و آزمون آنالیز واریانس یکطرفه، آنالیز گردید. نتایج نشاندهندة اختلاف معنیدار شاخصههای مختلف الگوی حرکت اسپرمی (سرعت خط منحنی، سرعت خط مستقیم ، خطی بودن، درصد حرکت رو به جلو) خصوصاً در غلظت 3/0 نرمال در مقایسه با شاهد بود (05/0p<).
چکیده انگلیسی:
The aim of this study was to investigate the effect of three concentration of citric acid on motility patterns of bovine epididymal sperms. For this purpose, 50 pairs of bovine testicles were collected immediately after slaughter form urmia abattoir and transferred to the laboratory alongside 5oc ice pack. Epididymal tail sperms were collected with a few incisions in vascular areas and transferred to hams f10 milieu with 10% fetal calf serum and counted after 15 minutes of incubation at 37oc in Co2 incubator. Concentrations of 50 million sperms per ml were proposal and in the normal sperm pH rang of 6.7-7.4, 0.1, 0.2 and 0.3 normal concentration of citric acid were added to sperm continuity micro tubes (normal concentration of acid equals 7 mg/ml of bovine serum) and at 15, 30, 45, 60, 90, 120, 180, 240 and 360 minutes the motility patterns of epididymal sperms were evaluated using the computer assisted sperms analyzing (CASA) method. Data were analyzed with one-way ANOVA using the SPSS 15 software. The results indicated significant differences in various indices of sperm motility patterns (Curvilinear Velocity, Straight-line Velocity, Average Path Velocity, Mean Angel Degree, Amplitude of Lateral Head Displacement, Beat-Cross Frequency, Linearity, Wobble) particularly at 0.3 normal concentration of citric acid compared with the control.
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