天津医药
天津醫藥
천진의약
TIANJIN MEDICAL JOURNAL
2014年
6期
569-572
,共4页
胰岛素抵抗%白细胞介素18%Toll样受体4%心血管疾病%大鼠,近交OLETF%吡格列酮
胰島素牴抗%白細胞介素18%Toll樣受體4%心血管疾病%大鼠,近交OLETF%吡格列酮
이도소저항%백세포개소18%Toll양수체4%심혈관질병%대서,근교OLETF%필격렬동
insulin resistance%interleukin-18%toll-like receptor 4%cardiovascular diseases%rats,inbred OLETF%pi-oglitazone
目的:研究吡格列酮对胰岛素抵抗(IR)自发性持续高血糖(OLETF)大鼠血清白细胞介素(IL)-18和Toll样受体4(TLR4)表达的影响及其降低心血管疾病风险的可能机制。方法 OLETF大鼠24只,高脂喂养20周建立IR模型,后随机均分为模型(M)组和吡格列酮(P)组,M组继续给予高脂饲料,P组给予吡格列酮加高脂饲料。另择LETO大鼠12只为正常对照(NC)组,给予标准饲料。药物干预20周后测定各组大鼠血清胰岛素(FINS)、空腹血糖(FBG)、IR指数(HOMA-IR)、胰岛素敏感指数(ISI)、三酰甘油(TG)、总胆固醇(TC)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、IL-18、TLR4水平。结果24只OLETF大鼠均造模成功。M组FBG、FINS、HOMA-IR、TC、TG、LDL-C、IL-18和TLR4均高于NC组和P组,ISI、HDL-C均低于NC组和P组(均P<0.05)。血清IL-18与FBG、FINS、HOMA-IR、TLR4呈正相关,与ISI呈负相关。血清TLR4与FBG、FINS、HOMA-IR、IL-18呈正相关,与ISI呈负相关(均P<0.05)。多元Logistic回归分析结果显示IL-18、TLR4是HOMA-IR的影响因素。结论吡格列酮可改善OLETF大鼠的IR及炎症状态,其可能通过降低IL-18水平和抑制TLR4途径发挥抗炎作用,从而降低心血管疾病的发生风险。
目的:研究吡格列酮對胰島素牴抗(IR)自髮性持續高血糖(OLETF)大鼠血清白細胞介素(IL)-18和Toll樣受體4(TLR4)錶達的影響及其降低心血管疾病風險的可能機製。方法 OLETF大鼠24隻,高脂餵養20週建立IR模型,後隨機均分為模型(M)組和吡格列酮(P)組,M組繼續給予高脂飼料,P組給予吡格列酮加高脂飼料。另擇LETO大鼠12隻為正常對照(NC)組,給予標準飼料。藥物榦預20週後測定各組大鼠血清胰島素(FINS)、空腹血糖(FBG)、IR指數(HOMA-IR)、胰島素敏感指數(ISI)、三酰甘油(TG)、總膽固醇(TC)、高密度脂蛋白膽固醇(HDL-C)、低密度脂蛋白膽固醇(LDL-C)、IL-18、TLR4水平。結果24隻OLETF大鼠均造模成功。M組FBG、FINS、HOMA-IR、TC、TG、LDL-C、IL-18和TLR4均高于NC組和P組,ISI、HDL-C均低于NC組和P組(均P<0.05)。血清IL-18與FBG、FINS、HOMA-IR、TLR4呈正相關,與ISI呈負相關。血清TLR4與FBG、FINS、HOMA-IR、IL-18呈正相關,與ISI呈負相關(均P<0.05)。多元Logistic迴歸分析結果顯示IL-18、TLR4是HOMA-IR的影響因素。結論吡格列酮可改善OLETF大鼠的IR及炎癥狀態,其可能通過降低IL-18水平和抑製TLR4途徑髮揮抗炎作用,從而降低心血管疾病的髮生風險。
목적:연구필격렬동대이도소저항(IR)자발성지속고혈당(OLETF)대서혈청백세포개소(IL)-18화Toll양수체4(TLR4)표체적영향급기강저심혈관질병풍험적가능궤제。방법 OLETF대서24지,고지위양20주건립IR모형,후수궤균분위모형(M)조화필격렬동(P)조,M조계속급여고지사료,P조급여필격렬동가고지사료。령택LETO대서12지위정상대조(NC)조,급여표준사료。약물간예20주후측정각조대서혈청이도소(FINS)、공복혈당(FBG)、IR지수(HOMA-IR)、이도소민감지수(ISI)、삼선감유(TG)、총담고순(TC)、고밀도지단백담고순(HDL-C)、저밀도지단백담고순(LDL-C)、IL-18、TLR4수평。결과24지OLETF대서균조모성공。M조FBG、FINS、HOMA-IR、TC、TG、LDL-C、IL-18화TLR4균고우NC조화P조,ISI、HDL-C균저우NC조화P조(균P<0.05)。혈청IL-18여FBG、FINS、HOMA-IR、TLR4정정상관,여ISI정부상관。혈청TLR4여FBG、FINS、HOMA-IR、IL-18정정상관,여ISI정부상관(균P<0.05)。다원Logistic회귀분석결과현시IL-18、TLR4시HOMA-IR적영향인소。결론필격렬동가개선OLETF대서적IR급염증상태,기가능통과강저IL-18수평화억제TLR4도경발휘항염작용,종이강저심혈관질병적발생풍험。
Objective To investigate change of TLR4 in OLETF (Otsuka Long-Evans Tokushima fatty) rats with in-sulin resistance (IR), and to study the effect of pioglitazone (PIO) on the expression of TLR4, and to explore the possible mechanisms of the PIO reducing the risk of cardiovascular diseases. Methods Twenty four OLETF rats were fed with high-fat diet for 20 weeks to establish the IR model then they were randomly assigned into two groups:the model group (group M), in which the rats were fed with high-fat diet;the PIO group (group P), in which the rats were fed with PIO in addition to high-fat diet . Control group include 12 OLETF rats fed with normal diet (group NC). After 20 weeks of drug intervention, plasma levels of FINS (Fasting INSulin), FBG (Fasting Blood Glucose), blood lipid, IL-18 and TLR4 were assessed in every group. Results Comparing with group NC, FBG, Blood lipid, IL-18 and TLR4 were significantly increased in group M(P<0.05 or P<0.01), comparing with group M, FBG, Blood lipid were improved in group P, and serum IL-18, TLR4 were signifi-cantly lower in the group P than that in group M(P<0.05 or P<0.01). Conclusion TLR4 may be involved in IR by pro-moting inflammatory response, and PIO can significantly improve IR and inflammatory, and reduce the risk of cardiovascular diseases by inhibiting the expression of TLR4.