山东体育学院学报
山東體育學院學報
산동체육학원학보
Journal of Shandong Institute Of Physical Education And Sports
2012年
6期
59~63
,共null页
徐国琴 陈晓彬 孟艳 王仁纲
徐國琴 陳曉彬 孟豔 王仁綱
서국금 진효빈 맹염 왕인강
有氧运动 糖尿病 肝脏 SREBP 脂肪变
有氧運動 糖尿病 肝髒 SREBP 脂肪變
유양운동 당뇨병 간장 SREBP 지방변
aerobic exercises ; diabetes ; liver; SREBP ; steatosis
目的:通过探讨不同强度有氧运动对糖尿病大鼠肝脏SREBP及脂肪变的影响,为运动改善胰岛素抵抗和防治糖尿病性脂肪肝提供理论依据。方法:通过高脂饮食喂养配合小剂量STZ腹腔注射建立糖尿病大鼠模型,并随机分为安静组(PA)和小中大三种强度运动组(LIE,MIE,HIE),分别进行10m/min、15m/rain和20m/min的有氧耐力跑台运动,1h/d,5d/w,持续运动训练6周。6周后测试大鼠空腹血糖、糖化血清蛋白、胰岛素和肝脏SREBP含量、肝脏脂肪浸润情况,并计算胰岛素抵抗指数、胰岛素敏感指数。结果:糖尿病大鼠经6周运动训练后,与PA组相比较,血糖、糖化血清蛋白和胰岛素抵抗指数均有显著降低;LIE、MIE及HIE组大鼠肝脏SREBP呈显著性降低(P〈0.01,P〈0.01,P〈0.05);肝脏HE染色发现,PA组大鼠肝细胞正常的条索状结构破坏,部分细胞中有脂质沉积,并出现脂肪空泡,有少部分肝细胞发生溶解性坏死。LIE、MIE和HIE组大鼠肝细胞有明显改善,且以MIE组脂肪浸润最少。结论:6周的运动干预能有效降低糖尿病大鼠肝脏SREBP蛋白含量,进而减少肝细胞内脂质沉积,维持肝细胞功能,有利于降低肝脏胰岛素抵抗,且以中低强度有氧运动效果较好。
目的:通過探討不同彊度有氧運動對糖尿病大鼠肝髒SREBP及脂肪變的影響,為運動改善胰島素牴抗和防治糖尿病性脂肪肝提供理論依據。方法:通過高脂飲食餵養配閤小劑量STZ腹腔註射建立糖尿病大鼠模型,併隨機分為安靜組(PA)和小中大三種彊度運動組(LIE,MIE,HIE),分彆進行10m/min、15m/rain和20m/min的有氧耐力跑檯運動,1h/d,5d/w,持續運動訓練6週。6週後測試大鼠空腹血糖、糖化血清蛋白、胰島素和肝髒SREBP含量、肝髒脂肪浸潤情況,併計算胰島素牴抗指數、胰島素敏感指數。結果:糖尿病大鼠經6週運動訓練後,與PA組相比較,血糖、糖化血清蛋白和胰島素牴抗指數均有顯著降低;LIE、MIE及HIE組大鼠肝髒SREBP呈顯著性降低(P〈0.01,P〈0.01,P〈0.05);肝髒HE染色髮現,PA組大鼠肝細胞正常的條索狀結構破壞,部分細胞中有脂質沉積,併齣現脂肪空泡,有少部分肝細胞髮生溶解性壞死。LIE、MIE和HIE組大鼠肝細胞有明顯改善,且以MIE組脂肪浸潤最少。結論:6週的運動榦預能有效降低糖尿病大鼠肝髒SREBP蛋白含量,進而減少肝細胞內脂質沉積,維持肝細胞功能,有利于降低肝髒胰島素牴抗,且以中低彊度有氧運動效果較好。
목적:통과탐토불동강도유양운동대당뇨병대서간장SREBP급지방변적영향,위운동개선이도소저항화방치당뇨병성지방간제공이론의거。방법:통과고지음식위양배합소제량STZ복강주사건립당뇨병대서모형,병수궤분위안정조(PA)화소중대삼충강도운동조(LIE,MIE,HIE),분별진행10m/min、15m/rain화20m/min적유양내력포태운동,1h/d,5d/w,지속운동훈련6주。6주후측시대서공복혈당、당화혈청단백、이도소화간장SREBP함량、간장지방침윤정황,병계산이도소저항지수、이도소민감지수。결과:당뇨병대서경6주운동훈련후,여PA조상비교,혈당、당화혈청단백화이도소저항지수균유현저강저;LIE、MIE급HIE조대서간장SREBP정현저성강저(P〈0.01,P〈0.01,P〈0.05);간장HE염색발현,PA조대서간세포정상적조색상결구파배,부분세포중유지질침적,병출현지방공포,유소부분간세포발생용해성배사。LIE、MIE화HIE조대서간세포유명현개선,차이MIE조지방침윤최소。결론:6주적운동간예능유효강저당뇨병대서간장SREBP단백함량,진이감소간세포내지질침적,유지간세포공능,유리우강저간장이도소저항,차이중저강도유양운동효과교호。
Objective:To investigate the changes of SREBP and liver steatosis after different intensity exercise on diabetes rats, which provide a theoretical basis to exercise improving insulin resistance and prevention and treatment of diabetic fatty liver. Methods : Rat model of type 2 diabetes were es- tablished by high - fat diet with low - dose streptozotocin intraperitoneally injected, and randomly divided into quiet group (PA) and 3 exercising groups ( LIE, MIE, HIE). After adapting to treadmill exercise, the 3 exercising groups do lh treadmill running by 10m/min, 15m/rain and 20m/min treadmill speed respectively, lh/d, 5d/w, continuous training for 6 weeks. Then tested FBG, GSP, Ins and the content SREBP of liver, HE staining of liver fat infiltration, and Calculated IRI, ISI, HBCI. Results : After 6 weeks of exercise training, compared with PA, the FBG, GSP,IRI and liverSREBP of 3 exercising groups were all decreased. HE staining of liver shows that PA group of nor- real rat liver cells in cord - like structural damage, some cells have lipid deposition and fat vacuoles, a small solubility of necrosis of liver cells. LIE, MIE and HIE rat liver cells had greatly im- proved and fat infiltration by MIE Group minimum. Conclusion: The 6 -week exercise intervention can reduce the protein content of SREBP in liver of diabetic rats, thereby reducing lipid accumulation in liver cells, help reduce hepatic insulin resistance, and the low and middle intensity aerobic exercise is better.