AIM:To investigate the protective effect of human umbilical cord mesenchymal stem cells(hUCMSCs)modified by the LIF gene on the retinal function of diabetic model rats and preliminarily explore the possible mechanism....AIM:To investigate the protective effect of human umbilical cord mesenchymal stem cells(hUCMSCs)modified by the LIF gene on the retinal function of diabetic model rats and preliminarily explore the possible mechanism.METHODS:A stably transfected cell line of hUCMSCs overexpressing leukemia inhibitory factor(LIF)was constructed.Overexpression was verified by fluorescent quantitative polymerase chain reaction(qPCR).Forty-eight adult Sprague-Dawley rats were randomly divided into a normal control group(group A),streptozotocin-induced diabetic control group(group B),diabetic rats at 3mo injected with empty vector-transfected hUCMSCs(group C)or injected with LIF-hUCMSCs(group D).Four weeks after the intravitreal injection,analyses in all groups included retinal function using flash electroretinogram(F-ERG),retinal blood vessel examination of retinal flat mounts perfused with fluorescein isothiocyanate-dextran(FITCdextran),and retinal structure examination of sections using hematoxylin and eosin staining.Expression levels of adiponectin(APN),high-sensitivity C-reactive protein(hsCRP),and neurotrophin-4(NT-4)in each group was detected using immunohistochemistry,PCR,Western blotting,and ELISA,respectively.RESULTS:A stable transgenic cell line of LIF-hUCMSCs was constructed.F-ERG and FITC-dextran examinations revealed no abnormalities of retinal structure and function in group A,severe damage of the retinal blood vessels and function in group B,and improved retinal structure and function in group C and especially group D.qPCR,ELISA,and Western blot analyses revealed progressively higher APN and NT-4 expression levels in groups B,C,and D than in group A.hs-CRP expression was significantly higher in group B than in groups A,C,and D,and was significantly higher in group C than in group D(P<0.05).CONCLUSION:LIF-hUCMSCs protect the retina of diabetic rats by upregulating APN and NT-4 expression and downregulating hs-CRP expression in the retina.展开更多
目的探讨人胰升血糖素样肽-1(GLP-1)类似物利拉鲁肽对2型糖尿病患者血清白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、人高敏C反应蛋白(hs-CRP)及脂联素的影响。方法选择本院住院的2型糖尿病患者40例作为实验组,健康体检者40例作为对照组...目的探讨人胰升血糖素样肽-1(GLP-1)类似物利拉鲁肽对2型糖尿病患者血清白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、人高敏C反应蛋白(hs-CRP)及脂联素的影响。方法选择本院住院的2型糖尿病患者40例作为实验组,健康体检者40例作为对照组,实验组改用利拉鲁肽治疗24周。分别于治疗前、治疗第12周、第24周测空腹血糖(FPG)、餐后2 h血糖(2 h PG)、空腹胰岛素(FINS)、糖化血红蛋白(Hb A1c)、hs-CRP、IL-6、TNF-α及脂联素,计算胰岛素抵抗指数(HOMA-IR)。结果利拉鲁肽治疗后,FPG、2 h PG、HOMA-IR、IL-6、TNF-α、hs-CRP显著下降(P<0.01),Hb A1c逐步降低(P<0.05),FINS、脂联素显著升高(P<0.01)。结论人GLP-1类似物可使2型糖尿病患者血清IL-6、TNF-α、hs-CRP浓度降低、脂联素浓度升高,从而抑制炎症反应,在一定程度上延缓2型糖尿病及其并发症的发生、发展。展开更多
目的血清人附睾分泌蛋白4(HE4)、糖类抗原125(CA125)及脂联素在子宫内膜癌淋巴结转移诊断中的价值。方法选择2011年12月至2014年6月在咸宁市中心医院接受治疗的子宫内膜癌患者82例,其中伴淋巴结转移47例(观察组),无淋巴结转移35例(对照...目的血清人附睾分泌蛋白4(HE4)、糖类抗原125(CA125)及脂联素在子宫内膜癌淋巴结转移诊断中的价值。方法选择2011年12月至2014年6月在咸宁市中心医院接受治疗的子宫内膜癌患者82例,其中伴淋巴结转移47例(观察组),无淋巴结转移35例(对照组)。对2组患者血清HE4、CA125及脂联素水平进行比较,并分析血清HE4、CA125及脂联素在子宫内膜癌淋巴结转移诊断中的价值。结果观察组患者血清HE4和CA125水平显著高于对照组(P<0.05),血清脂联素水平显著低于对照组(P<0.05)。受试者工作特征曲线分析显示,以血清HE4水平为170.6 pmol·L^(-1)作为临界值,其对子宫内膜癌伴淋巴结转移诊断的敏感度为47.27%,特异度为77.78%;以血清CA125水平为40.69 k U·L^(-1)作为临界值,其对子宫内膜癌伴淋巴结转移诊断的敏感度为23.40%,特异度为91.43%;以血清脂联素水平为7.13 mg·L^(-1)作为临界值,其对子宫内膜癌伴淋巴结转移诊断的敏感度为44.68%,特异度为81.35%;血清HE4、CA125和脂联素联合检测对子宫内膜癌伴淋巴结转移诊断的敏感度为65.47%,特异度为89.02%。血清HE4与脂联素对子宫内膜癌伴淋巴结转移诊断的敏感度和特异度比较差异均无统计学意义(P>0.05);血清HE4和脂联素对子宫内膜癌伴淋巴结转移诊断的敏感度高于CA125(P<0.05),特异度低于CA125(P<0.05);血清HE4、CA125和脂联素联合检测对子宫内膜癌伴淋巴结转移诊断的敏感度均高于单独检测血清HE4、CA125及脂联素(P<0.05)。血清HE4、CA125和脂联素联合检测对子宫内膜癌伴淋巴结转移诊断的特异度高于单独检测血清HE4和脂联素(P<0.05),但三者联合检测与单独检测CA125对子宫内膜癌伴淋巴结转移诊断的特异度比较差异无统计学意义(P>0.05)。结论血清HE4、CA125和脂联素可作为诊断子宫内膜癌伴淋巴结转移的肿瘤标志物,三者联合检测对诊断子宫内膜癌淋巴结转移具有较高价�展开更多
基金Tianjin Science and Technology Project(No.14JCYBJC27400)。
文摘AIM:To investigate the protective effect of human umbilical cord mesenchymal stem cells(hUCMSCs)modified by the LIF gene on the retinal function of diabetic model rats and preliminarily explore the possible mechanism.METHODS:A stably transfected cell line of hUCMSCs overexpressing leukemia inhibitory factor(LIF)was constructed.Overexpression was verified by fluorescent quantitative polymerase chain reaction(qPCR).Forty-eight adult Sprague-Dawley rats were randomly divided into a normal control group(group A),streptozotocin-induced diabetic control group(group B),diabetic rats at 3mo injected with empty vector-transfected hUCMSCs(group C)or injected with LIF-hUCMSCs(group D).Four weeks after the intravitreal injection,analyses in all groups included retinal function using flash electroretinogram(F-ERG),retinal blood vessel examination of retinal flat mounts perfused with fluorescein isothiocyanate-dextran(FITCdextran),and retinal structure examination of sections using hematoxylin and eosin staining.Expression levels of adiponectin(APN),high-sensitivity C-reactive protein(hsCRP),and neurotrophin-4(NT-4)in each group was detected using immunohistochemistry,PCR,Western blotting,and ELISA,respectively.RESULTS:A stable transgenic cell line of LIF-hUCMSCs was constructed.F-ERG and FITC-dextran examinations revealed no abnormalities of retinal structure and function in group A,severe damage of the retinal blood vessels and function in group B,and improved retinal structure and function in group C and especially group D.qPCR,ELISA,and Western blot analyses revealed progressively higher APN and NT-4 expression levels in groups B,C,and D than in group A.hs-CRP expression was significantly higher in group B than in groups A,C,and D,and was significantly higher in group C than in group D(P<0.05).CONCLUSION:LIF-hUCMSCs protect the retina of diabetic rats by upregulating APN and NT-4 expression and downregulating hs-CRP expression in the retina.
文摘目的探讨人胰升血糖素样肽-1(GLP-1)类似物利拉鲁肽对2型糖尿病患者血清白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)、人高敏C反应蛋白(hs-CRP)及脂联素的影响。方法选择本院住院的2型糖尿病患者40例作为实验组,健康体检者40例作为对照组,实验组改用利拉鲁肽治疗24周。分别于治疗前、治疗第12周、第24周测空腹血糖(FPG)、餐后2 h血糖(2 h PG)、空腹胰岛素(FINS)、糖化血红蛋白(Hb A1c)、hs-CRP、IL-6、TNF-α及脂联素,计算胰岛素抵抗指数(HOMA-IR)。结果利拉鲁肽治疗后,FPG、2 h PG、HOMA-IR、IL-6、TNF-α、hs-CRP显著下降(P<0.01),Hb A1c逐步降低(P<0.05),FINS、脂联素显著升高(P<0.01)。结论人GLP-1类似物可使2型糖尿病患者血清IL-6、TNF-α、hs-CRP浓度降低、脂联素浓度升高,从而抑制炎症反应,在一定程度上延缓2型糖尿病及其并发症的发生、发展。
文摘目的血清人附睾分泌蛋白4(HE4)、糖类抗原125(CA125)及脂联素在子宫内膜癌淋巴结转移诊断中的价值。方法选择2011年12月至2014年6月在咸宁市中心医院接受治疗的子宫内膜癌患者82例,其中伴淋巴结转移47例(观察组),无淋巴结转移35例(对照组)。对2组患者血清HE4、CA125及脂联素水平进行比较,并分析血清HE4、CA125及脂联素在子宫内膜癌淋巴结转移诊断中的价值。结果观察组患者血清HE4和CA125水平显著高于对照组(P<0.05),血清脂联素水平显著低于对照组(P<0.05)。受试者工作特征曲线分析显示,以血清HE4水平为170.6 pmol·L^(-1)作为临界值,其对子宫内膜癌伴淋巴结转移诊断的敏感度为47.27%,特异度为77.78%;以血清CA125水平为40.69 k U·L^(-1)作为临界值,其对子宫内膜癌伴淋巴结转移诊断的敏感度为23.40%,特异度为91.43%;以血清脂联素水平为7.13 mg·L^(-1)作为临界值,其对子宫内膜癌伴淋巴结转移诊断的敏感度为44.68%,特异度为81.35%;血清HE4、CA125和脂联素联合检测对子宫内膜癌伴淋巴结转移诊断的敏感度为65.47%,特异度为89.02%。血清HE4与脂联素对子宫内膜癌伴淋巴结转移诊断的敏感度和特异度比较差异均无统计学意义(P>0.05);血清HE4和脂联素对子宫内膜癌伴淋巴结转移诊断的敏感度高于CA125(P<0.05),特异度低于CA125(P<0.05);血清HE4、CA125和脂联素联合检测对子宫内膜癌伴淋巴结转移诊断的敏感度均高于单独检测血清HE4、CA125及脂联素(P<0.05)。血清HE4、CA125和脂联素联合检测对子宫内膜癌伴淋巴结转移诊断的特异度高于单独检测血清HE4和脂联素(P<0.05),但三者联合检测与单独检测CA125对子宫内膜癌伴淋巴结转移诊断的特异度比较差异无统计学意义(P>0.05)。结论血清HE4、CA125和脂联素可作为诊断子宫内膜癌伴淋巴结转移的肿瘤标志物,三者联合检测对诊断子宫内膜癌淋巴结转移具有较高价�
