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  5. 大麻素受體經由降低葡萄糖轉運子4之表現而抑制肌肉細胞之葡萄糖攝取
 
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大麻素受體經由降低葡萄糖轉運子4之表現而抑制肌肉細胞之葡萄糖攝取

Other Title
Cannabinoid receptor type 1 regulates glucose uptake by reducing GLUT4 expression in C2C12 skeletal muscle cells
Type
thesis
Date Issued
2011-06-17
Author(s)
洪千晴
Advisor
李宏謨
Subjects
系所名稱:醫學檢驗暨生物技術學系
Description
學位別:碩士
語文別:中文
指導教授:李宏謨
共同指導教授:
口試委員:王祥光;高淑慧
中文關鍵字:大麻素受體;anandamide;rimonabant 胰島素抗性;葡萄糖轉運子4
Abstract
Rimonabant (SR141716) 為減肥及治療糖尿病的有效藥物,但由於會造成憂鬱及自殺傾向的副作用,因此已被禁止使用。過去有許多研究指出,rimonabant不只是可以通過血腦障壁 (blood brain barrier) 進到腦部抑制中樞神經的食慾中樞,還可以作用在周邊組織,促進肌肉細胞葡萄糖攝取、減少脂肪組織的油脂堆積。若能修飾rimonabant,使其無法通過血腦障壁,則藥物就不會到達腦部而造成憂鬱自殺的副作用,且仍然可以作用在周邊組織,有改善醣類及脂肪代謝的作用。肌肉組織為代謝消耗醣類的主要組織,若肌肉組織產生胰島素抗性,則很有可能造成第二型糖尿病,本研究主要探討CB1 receptor的agonist anandamide (AEA) 是否會抑制胰島素所促進的肌肉細胞葡萄糖攝取,而rimonabant (SR141716) 及其修飾物compound A、compound B、compound C以及compound D是否有恢復胰島素刺激肌肉細胞攝取葡萄糖的效果。我們發現在前處理AEA (100 nM) 後,會抑制胰島素所促進的肌肉細胞葡萄糖攝取,加入rimonabant之後,則會有恢復胰島素作用的效果。我們經由本研究發現,AEA會經由抑制肌肉細胞的GLUT4表現量進而造成肌肉細胞葡萄糖攝取量降低,我們的實驗也證實,rimonabant的修飾物compound A、compound B、compound C以及compound D與rimonabant一樣,有恢復肌肉細胞葡萄糖攝取的效果,同時我們也發現,AEA可能會經由抑制肌肉細胞p38的活性來抑制GLUT4的內生性活性。
URI
https://203.71.86.71/handle/123456789/13637

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