دوره 8، شماره 18 - ( زمستان 1396 )                   جلد 8 شماره 18 صفحات 160-155 | برگشت به فهرست نسخه ها


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چکیده:   (3668 مشاهده)
   پرولاکتین از هیپوفیز قدامی ترشح می شود و نقش­های مهمی از جمله در توسعه پستان، تمایز و شیرواری دارد. هدف از این مطالعه ارزیابی چند شکلی ژن گیرنده پرولاکتین در نژاد شال و آمیخته­های شال و رومانوف بود. برای این منظور پس از خونگیری از دام­ها و استخراج DNA به روش فنول کلروفرم، دو قطعه 176 و 215 جفت بازی از اینترون 1 ژن گیرنده پرولاکتین توسط آغازگرهای اختصاصی و طی واکنش PCR تکثیر شدند. سپس محصولات PCR با استفاده از الکتروفورز ژل آکریل آمید و رنگ آمیزی نقره مورد آنالیز قرار گرفتند. نتایج نشان داد در قطعه 176 جفت بازی از ژن گیرنده پرولاکتین (1PRLR) در نژاد شال دو ژنوتیپ AB  و AC مشاهده شد. فراوانی این ژنوتیپ­ها به ترتیب 92/0 و 08/0 و فراوانی آلل­های A، B و C به ترتیب 50/0،46/0 و 04/0 بود. همچنین در جایگاه 1PRLR از این ژن در نژاد آمیخته شال و رومانف فراوانی ژنوتیپ AB و AC به ترتیب 94/0 و 06/0 مشاهده شد و فراوانی آلل­های A، B و C نیز به ترتیب 50/0، 47/0 و 03/0 بود. بررسی چند شکلی در قطعه 215 جفت بازی از ژن گیرنده پرولاکتین (2PRLR) در نژاد شال و آمیخته شال و رومانف، تنها ژنوتیپ AA را نشان داد. نتایج این مطالعه نشان داد که جایگاه 1PRLR در نژاد شال و آمیخته شال و رومانف چند شکل در حالی که جایگاه 2PRLR در نمونه­های مورد مطالعه یک شکل بود.
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نوع مطالعه: پژوهشي | موضوع مقاله: تخصصي
دریافت: 1396/12/9 | ویرایش نهایی: 1396/12/12 | پذیرش: 1396/12/9 | انتشار: 1396/12/9

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