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  5. 飲食中添加精胺酸對第2型糖尿病大鼠體內發炎反應及腎損傷之影響
 
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飲食中添加精胺酸對第2型糖尿病大鼠體內發炎反應及腎損傷之影響

Other Title
Effects of dietary arginine on inflammation and renal injury in rats with streptozotocin-induced type 2 diabetes
Type
thesis
Date Issued
2009-06-24
Author(s)
黃冠勳
Advisor
葉松鈴
Subjects
系所名稱:保健營養學研究所
Description
學位別:碩士
語文別:中文
指導教授:葉松鈴
共同指導教授:
口試委員:沈立言;陳彥州
中文關鍵字:精胺酸;第2型糖尿病;糖化終產物;糖化終產物受器;硝基酪氨酸
Abstract
近年來,許多研究指出,精胺酸(Arginine, Arg)在代謝壓力下具有免疫調節的功用;體外研究亦顯示,Arg對糖化終產物(advanced glycation end products; AGEs)之合成有抑制的效果。本研究從飲食中添加Arg,探討其對第2型糖尿病大鼠體內促發炎物質產生及腎臟AGEs接受器(RAGE)表現之影響。實驗選用雄性Wistar大鼠,將大鼠分成控制組 (NC)及兩組糖尿病組。實驗為期八週,實驗期間NC組餵食標準飼料,一組糖尿病組(diabetes mellitus, DM)餵食半純化之標準飼料,而另一糖尿病組餵食以Arg (DM-Arg,佔總熱量2%)取代部分酪蛋白的飼料。以腹腔注射nicotinamide及streptozotocin的方式誘發大鼠第2型糖尿病。當禁食血糖 ?d 180 mg/dl即判定為糖尿病。分別在基準點、4週及8週時收集血液樣本,並在犧牲時收集腎臟進行分析。研究結果顯示,在8週時血漿C-反應蛋白(C-reactive protein, CRP)、單核球趨化蛋白(monocyte chemotactic protein, MCP)-1、前列腺素(prostaglandin, PG) E2 及果糖胺(fructosamine)濃度,DM及DM-Arg組皆顯著高於NC組 (p < 0.05),且MCP-1、PGE2在DM組與DM-Arg組間無統計差異。而血漿CRP及fructosamine濃度DM-Arg組皆顯著低於DM組 (CRP: 33.2 ± 4.7 vs. 37.6 ± 4.2 mg/dl, p < 0.05; fructosamine: 0.16 ± 0.02 vs. 0.19 ± 0.02 ΔA/3min, p < 0.001)。在腎臟硝基酪胺酸(nitrotyrosine)及核轉錄因子(nuclear factor-kappa B, NF-κB)次單元p65蛋白質表現結果顯示,DM-Arg組顯著低於DM 組 (nitrotyrosine: 176 ± 26.7 vs. 199 ± 21 nM, p < 0.05),此外,免疫組織染色法得知腎臟RAGE表現量,DM-Arg組亦顯著低於DM組 (33.6 ± 0.4 vs. 42.3 ± 0.4 μm2, p < 0.05)。綜合上述研究結果顯示,飲食中添加Arg對第2型糖尿病大鼠可降低血中發炎反應介質,減少體內AGEs之合成並改善腎臟損傷之情形。
URI
https://203.71.86.71/handle/123456789/12862
https://hdl.handle.net/11296/9q24x2
File(s)
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C0191224.pdf

Size

16.41 MB

Format

Adobe PDF

Checksum

(MD5):792d03d6f2eeb1a8b8cb6343f19cfa7d

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