بهبود نیمرخ گلیسیمیک متعاقب تمرینات مقاومتی در رتهای دیابتی با تاکید بر بیان لیپوکالین-2
الموضوعات : فصلنامه زیست شناسی جانوریمحمد پارکرای 1 , شهرام سهیلی 2
1 - گروه تربیت بدنی و علوم ورزشی، واحد شهرقدس، دانشگاه آزاد اسلامی، تهران، ایران
2 - گروه تربیت بدنی و علوم ورزشی، واحد شهرقدس، دانشگاه آزاد اسلامی، تهران، ایران
الکلمات المفتاحية: تمرین مقاومتی, بیان لیپوکالین 2, مقاومت انسولین, نیمرخ گلیسیمیک, دیابت نوع 2,
ملخص المقالة :
لیپوکالین-2 از مهمترین میانجیهای التهابی مرتبط با چاقی و موثر در هموستاز گلوکز معرفی شده است. مطالعه حاضر با هدف تعیین اثر تمرینات مقاومتی بر بیان ژن لیپوکالین-2 در بافت چربی زیرپوستی همچنین نیمرخ گلیسیمیک در رتهای چاق دیابتی بود. 14 سر رت نر ویستار پس از القای دیابت نوع 2 توسط رژیم غذایی پرچرب و تزریق STZ به گروههای کنترل و تمرین مقاومتی تقسیم شدند. تمرینات مقاومتی به مدت 6 هفته به تعداد 5 جلسه در هفته در قالب بالا رفتن از نردبان پلهای توسط رتهای گروه مقاومتی انجام گرفت. 48 ساعت پس از آخرین جلسه تمرینی، همه رتها تشریح شدند. بیان لیپوکالین-2، گلوکز، هموگلوبین گلیکوزیله و مقاومت انسولین اندازهگیری شدند و توسط آزمون تی مستقل بین دو گروه مقایسه شدند. در مقایسه با گروه کنترل، تمرینات مقاومتی به کاهش معنیدار گلوکز (001/0 = p)، هموگلوبین گلیکوزیله (016/0 = p)، مقاومت انسولین (001/0 = p) و بیان لیپوکالین-2 در بافت چربی زیرپوستی (003/0 = p) همچنین افزایش معنیدار انسولین سرم (042/0 = p) منجر شد. با استناد به این یافتهها، بهبود نیمرخ گلیسیمیک در رتهای مورد مطالعه را شاید بتوان به کاهش بیان لیپوکالین-2 و کاهش مقاومت انسولین متعاقب تمرینات مقاومتی نسبت داد. درک و آگاهی بیشتر از مکانیسمهای عهده دار این تغییرات نیازمند مطالعات بیشتر است.
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