The association of retinol binding protein 4 （RBP4） with atherosclerosis of the carotid artery in type 2 diabetes mellitus （T2DM） remains undefined. We aimed to investigate the correlation of RBP4 expression with ...The association of retinol binding protein 4 （RBP4） with atherosclerosis of the carotid artery in type 2 diabetes mellitus （T2DM） remains undefined. We aimed to investigate the correlation of RBP4 expression with atherosclerosis of the carotid artery in T2DM. A total of 1,076 subjects were investigated for intima-media thickness of the bilateral common carotid arteries, and they were divided into three groups： in group Ⅰ, patients had normal neck vascular ultra- sound, in group Ⅱ, intimal carotid artery media thickness was equal to or more than 1 mm, and in group Ⅲ, carotid artery plaque was present. Height, weight, blood pressure （BP）, fasting plasma glucose （FPG）, hemoglobin Alc （HbA1c）, total cholesterol （TC）, triglyceride （TG）, low-density lipoprotein cholesterol （LDL-C）, high-density lipopro- tein cholesterol （HDL-C）, apolipoprotein A-1 （apoA-1）, apolipoprotein B （apoB） and lipoprotein （a） [Lp（a）] were determined by routine laboratory methods. RBP4 and high sensitivity C reactive protein （HsCRP） were measured by an enzyme-linked immuno-sorbent assay, and insulin concentration was measured by an electrochemiluminescence sandwich immunoassay. Duration of diabetes, waist and BP, FPG, HbAlc, TG, TC, LDL-C, APOB, Lp（a）, HsCRP, RBP4 and homeostasis model assessment insulin resistance index （HOMA-IR） were significantly lower in group I than in the other two groups （P〈0.01, P〈0.01）. Plasma levels of HbAlc, RBP4, LDL-C, TC, HOMA-IR, HsCRP and Lp（a）, waist and BP were significantly increased in group III than in group II （P〈0.01）. Multivariate logistic regression analysis showed that there were seven factors associated with the occurrence of carotid artery atherosclero- sis and its risks in descending order were： high LDL-C, high waist, high HsCRP, duration of diabetes, high HOMA-IR, HbAlc and high RBP4. Our finding supported that RBP4 was positively correlated with carotid atherosclerosis in patients with T2DM and could be used as an early predictor of cardiovascular disease.展开更多
Idiopathic membranous nephropathy is a common primary glomerular disease.Recently,it has been found that the progression and prognosis of glomerular diseases are not only related to the glomeruli itself,but also to th...Idiopathic membranous nephropathy is a common primary glomerular disease.Recently,it has been found that the progression and prognosis of glomerular diseases are not only related to the glomeruli itself,but also to the severity of renal tubular injury.Although blood creatinine and urinary protein are recognized biomarkers,they appear late,are insensitive,lack specificity,and are difficult to respond to IMN conditions in a timely and accurate manner.Markers such as N-acetyl-β-D-glucosaminidase,kidney injury molecule 1,neutrophil gelatinase-associated lipoprotein in urine can dynamically reflect the progress of kidney injury in the early stage,and are detected as noninvasive,so It has been applied in IMN,but such research is lacking,and the scope needs to be further expanded and discussed in depth.展开更多
Background Retinol binding protein 4 （RBP4）, as an adipocyte secreted cytokine, was recently found to be inversely correlated with expression of glucose transporter 4 （GLUT4） in insulin resistance （IR） state and...Background Retinol binding protein 4 （RBP4）, as an adipocyte secreted cytokine, was recently found to be inversely correlated with expression of glucose transporter 4 （GLUT4） in insulin resistance （IR） state and to have an intimate relationship with IR and type 2 diabetes mellitus （T2DM）. The present study aimed to evaluate the anti-diabetic efficacy of cinnamaldehyde （Cin）, berberine （Ber）, and metformin （Met） as well as their impacts on the RBP4-GLUT4 system. Methods Rat models of T2DM were established by combination of intraperitoneal injection of low-dose streptozotocin and high fat diet induction. Rats were divided into five groups： the control group, the diabetes group, the diabetes＋Ber group, the diabetes＋Cin group, and the diabetes＋Met group. Western blotting was used to detect the serum or tissue RBP4 and GLUT4 protein levels. Results After treatment for four weeks, both Cin and Ber displayed significant hypolipidemic, hypoglycemic, and insulin sensitizing functions （P 〈0.01） compared with the control group. Their effects on lowering fasting plasma glucose （FPG）, low density lipoprotein-cholesterol （LDL-C） and homeostasis model assessment of insulin resistance （HOMA-IR） seem even better than that of Met. Cin and Ber markedly lowered serum RBP4 levels and up-regulated the expression of tissue GLUT4 protein, and Cin seemed more notable in affecting these two proteins. Conclusions Both Cin and Ber display an exciting anti-diabetic efficacy in this study and may be of great value for the treatment of type 2 diabetes. Their mechanisms involve the RBP4-GLUT4 system, during which the serum RBP4 levels are lowered and the expression of tissue GLUT4 protein is up-regulated.展开更多
Objectives To investigate the expression state of cellular retinol-binding protein-1 （ CRBP-1 ） in myocardial infarction （MI） tissue of rat model. Since CRBP-1 is transiently expressed in tissue repairing process,...Objectives To investigate the expression state of cellular retinol-binding protein-1 （ CRBP-1 ） in myocardial infarction （MI） tissue of rat model. Since CRBP-1 is transiently expressed in tissue repairing process, so ventricular remodeling after MI is also a kind of tissue repair, in which we may find the expression of CRBP-1. Methods MI model was produced in male Wistar rats by left coronary ligation. Rats were sacrificed to obtain the heart at 3^rd, 6^th, and 15^th day after operation. Heart was cut into four cross sections, fixed and embedded in paraffin. Sections were cut and stained with hematoxylin and eosin （HE）, Masson＇s trichrome （MT）, rabbit anti-CRBP-1 antibody and mouse anti-a-smooth muscle （SM） actin antibody. CRBP-1 and α-SM actin were also detected using Western blotting. Results Forty-five Wistar rats developed MI with infarct size ranging from 45.6% to 56. 2% （mean 48.6 ± 3.3% ）. Heart sections of MI with HE and MT staining showed a remarkable myocyte necrosis, collagen disposition and ventricular remodeling. CRBP-1 expression was detected at both of the endocardial and epicardial region of infarction, where fibroblasts infiltrated with myocyte necrosis at 3^rd day and 6^th day after operation. At 15^th day, α-SM actin positive fibroblasts in the infarcted region expressed CRBP-1. Conclusions We demonstrate that CRBP-1 is transiently and rapidly expressed by fibrohlast in rat model of MI. Our results therefore indicating a potential relationship between CRBP-1 and ventricular remodeling process after MI.展开更多
目的:探究血清甘油三酯-葡萄糖(TyG)指数、摄食抑制因子-1(nesfatin-1)、视黄醇结合蛋白4(RBP4)联合预测糖尿病视网膜病变(DR)的价值,为DR早期预测提供支持。方法:回顾性分析。收集2022-02/2023-12我院接诊的2型糖尿病(T2DM)患者164例...目的:探究血清甘油三酯-葡萄糖(TyG)指数、摄食抑制因子-1(nesfatin-1)、视黄醇结合蛋白4(RBP4)联合预测糖尿病视网膜病变(DR)的价值,为DR早期预测提供支持。方法:回顾性分析。收集2022-02/2023-12我院接诊的2型糖尿病(T2DM)患者164例的临床资料,按照眼底检查结果分为DR组43例(其中增殖性DR 19例,非增殖性DR 24例),不合并DR的T2DM组121例。入院后记录患者基本资料,检查血清TyG指数、nesfatin-1、RBP4水平。结果:DR组病程长于T2DM组,空腹血糖、糖化血红蛋白、甘油三酯、总胆固醇、低密度脂蛋白及TyG指数、RBP4水平高于T2DM组,高密度脂蛋白、nesfatin-1水平低于T2DM组(均P<0.001)。多因素Logistic回归分析可知,T2DM病程(OR=1.338,95%CI:1.059-1.690)、糖化血红蛋白(OR=5.065,95%CI:1.659-15.470)、低密度脂蛋白(OR=12.715,95%CI:2.385-67.790)、TyG指数(OR=23.057,95%CI:2.936-181.073)、RBP4(OR=1.319,95%CI:1.028-1.692)是T2DM患者发生DR的危险因素,nesfatin-1(OR=0.007,95%CI:0.003-0.016)为保护因素。绘制ROC曲线显示,TyG指数、nesfatin-1、RBP4均对T2DM患者并发DR具有一定预测价值,曲线下面积(areas under curve,AUC)分别为0.804、0.878、0.738,各指标联合预测时AUC为0.946,预测敏感度为83.72%、特异度为92.56%。增殖性DR患者TyG指数、RBP4水平高于非增殖性DR患者,nesfatin-1水平低于非增殖性DR患者(均P<0.05)。Spearman相关性分析显示,TyG指数、RBP4水平与DR病情程度呈正相关,nesfatin-1水平与DR病情程度呈负相关(r_(s)=0.557、0.392、-0.359,均P<0.05)。Pearson相关分析显示,T2DM并发DR患者TyG指数与nesfatin-1水平呈负相关,与RBP4水平呈正相关,nesfatin-1与RBP4水平呈负相关(r=-0.486、0.538、-0.592,均P<0.05)。结论:血清TyG指数、nesfatin-1、RBP4水平与DR发病风险及病情程度有关,可作为DR早期预测的标志物,且联合预测效能更好。展开更多
文摘The association of retinol binding protein 4 （RBP4） with atherosclerosis of the carotid artery in type 2 diabetes mellitus （T2DM） remains undefined. We aimed to investigate the correlation of RBP4 expression with atherosclerosis of the carotid artery in T2DM. A total of 1,076 subjects were investigated for intima-media thickness of the bilateral common carotid arteries, and they were divided into three groups： in group Ⅰ, patients had normal neck vascular ultra- sound, in group Ⅱ, intimal carotid artery media thickness was equal to or more than 1 mm, and in group Ⅲ, carotid artery plaque was present. Height, weight, blood pressure （BP）, fasting plasma glucose （FPG）, hemoglobin Alc （HbA1c）, total cholesterol （TC）, triglyceride （TG）, low-density lipoprotein cholesterol （LDL-C）, high-density lipopro- tein cholesterol （HDL-C）, apolipoprotein A-1 （apoA-1）, apolipoprotein B （apoB） and lipoprotein （a） [Lp（a）] were determined by routine laboratory methods. RBP4 and high sensitivity C reactive protein （HsCRP） were measured by an enzyme-linked immuno-sorbent assay, and insulin concentration was measured by an electrochemiluminescence sandwich immunoassay. Duration of diabetes, waist and BP, FPG, HbAlc, TG, TC, LDL-C, APOB, Lp（a）, HsCRP, RBP4 and homeostasis model assessment insulin resistance index （HOMA-IR） were significantly lower in group I than in the other two groups （P〈0.01, P〈0.01）. Plasma levels of HbAlc, RBP4, LDL-C, TC, HOMA-IR, HsCRP and Lp（a）, waist and BP were significantly increased in group III than in group II （P〈0.01）. Multivariate logistic regression analysis showed that there were seven factors associated with the occurrence of carotid artery atherosclero- sis and its risks in descending order were： high LDL-C, high waist, high HsCRP, duration of diabetes, high HOMA-IR, HbAlc and high RBP4. Our finding supported that RBP4 was positively correlated with carotid atherosclerosis in patients with T2DM and could be used as an early predictor of cardiovascular disease.
基金Natural Science Foundation of Hebei Province(No.2019423037)Hebei Provincial Administration of Traditional Chinese Medicine(No.2020072)。
文摘Idiopathic membranous nephropathy is a common primary glomerular disease.Recently,it has been found that the progression and prognosis of glomerular diseases are not only related to the glomeruli itself,but also to the severity of renal tubular injury.Although blood creatinine and urinary protein are recognized biomarkers,they appear late,are insensitive,lack specificity,and are difficult to respond to IMN conditions in a timely and accurate manner.Markers such as N-acetyl-β-D-glucosaminidase,kidney injury molecule 1,neutrophil gelatinase-associated lipoprotein in urine can dynamically reflect the progress of kidney injury in the early stage,and are detected as noninvasive,so It has been applied in IMN,but such research is lacking,and the scope needs to be further expanded and discussed in depth.
文摘Background Retinol binding protein 4 （RBP4）, as an adipocyte secreted cytokine, was recently found to be inversely correlated with expression of glucose transporter 4 （GLUT4） in insulin resistance （IR） state and to have an intimate relationship with IR and type 2 diabetes mellitus （T2DM）. The present study aimed to evaluate the anti-diabetic efficacy of cinnamaldehyde （Cin）, berberine （Ber）, and metformin （Met） as well as their impacts on the RBP4-GLUT4 system. Methods Rat models of T2DM were established by combination of intraperitoneal injection of low-dose streptozotocin and high fat diet induction. Rats were divided into five groups： the control group, the diabetes group, the diabetes＋Ber group, the diabetes＋Cin group, and the diabetes＋Met group. Western blotting was used to detect the serum or tissue RBP4 and GLUT4 protein levels. Results After treatment for four weeks, both Cin and Ber displayed significant hypolipidemic, hypoglycemic, and insulin sensitizing functions （P 〈0.01） compared with the control group. Their effects on lowering fasting plasma glucose （FPG）, low density lipoprotein-cholesterol （LDL-C） and homeostasis model assessment of insulin resistance （HOMA-IR） seem even better than that of Met. Cin and Ber markedly lowered serum RBP4 levels and up-regulated the expression of tissue GLUT4 protein, and Cin seemed more notable in affecting these two proteins. Conclusions Both Cin and Ber display an exciting anti-diabetic efficacy in this study and may be of great value for the treatment of type 2 diabetes. Their mechanisms involve the RBP4-GLUT4 system, during which the serum RBP4 levels are lowered and the expression of tissue GLUT4 protein is up-regulated.
基金supported by the National Nutural Science Foundation(No.09010170172)
文摘Objectives To investigate the expression state of cellular retinol-binding protein-1 （ CRBP-1 ） in myocardial infarction （MI） tissue of rat model. Since CRBP-1 is transiently expressed in tissue repairing process, so ventricular remodeling after MI is also a kind of tissue repair, in which we may find the expression of CRBP-1. Methods MI model was produced in male Wistar rats by left coronary ligation. Rats were sacrificed to obtain the heart at 3^rd, 6^th, and 15^th day after operation. Heart was cut into four cross sections, fixed and embedded in paraffin. Sections were cut and stained with hematoxylin and eosin （HE）, Masson＇s trichrome （MT）, rabbit anti-CRBP-1 antibody and mouse anti-a-smooth muscle （SM） actin antibody. CRBP-1 and α-SM actin were also detected using Western blotting. Results Forty-five Wistar rats developed MI with infarct size ranging from 45.6% to 56. 2% （mean 48.6 ± 3.3% ）. Heart sections of MI with HE and MT staining showed a remarkable myocyte necrosis, collagen disposition and ventricular remodeling. CRBP-1 expression was detected at both of the endocardial and epicardial region of infarction, where fibroblasts infiltrated with myocyte necrosis at 3^rd day and 6^th day after operation. At 15^th day, α-SM actin positive fibroblasts in the infarcted region expressed CRBP-1. Conclusions We demonstrate that CRBP-1 is transiently and rapidly expressed by fibrohlast in rat model of MI. Our results therefore indicating a potential relationship between CRBP-1 and ventricular remodeling process after MI.
文摘目的:探究血清甘油三酯-葡萄糖(TyG)指数、摄食抑制因子-1(nesfatin-1)、视黄醇结合蛋白4(RBP4)联合预测糖尿病视网膜病变(DR)的价值,为DR早期预测提供支持。方法:回顾性分析。收集2022-02/2023-12我院接诊的2型糖尿病(T2DM)患者164例的临床资料,按照眼底检查结果分为DR组43例(其中增殖性DR 19例,非增殖性DR 24例),不合并DR的T2DM组121例。入院后记录患者基本资料,检查血清TyG指数、nesfatin-1、RBP4水平。结果:DR组病程长于T2DM组,空腹血糖、糖化血红蛋白、甘油三酯、总胆固醇、低密度脂蛋白及TyG指数、RBP4水平高于T2DM组,高密度脂蛋白、nesfatin-1水平低于T2DM组(均P<0.001)。多因素Logistic回归分析可知,T2DM病程(OR=1.338,95%CI:1.059-1.690)、糖化血红蛋白(OR=5.065,95%CI:1.659-15.470)、低密度脂蛋白(OR=12.715,95%CI:2.385-67.790)、TyG指数(OR=23.057,95%CI:2.936-181.073)、RBP4(OR=1.319,95%CI:1.028-1.692)是T2DM患者发生DR的危险因素,nesfatin-1(OR=0.007,95%CI:0.003-0.016)为保护因素。绘制ROC曲线显示,TyG指数、nesfatin-1、RBP4均对T2DM患者并发DR具有一定预测价值,曲线下面积(areas under curve,AUC)分别为0.804、0.878、0.738,各指标联合预测时AUC为0.946,预测敏感度为83.72%、特异度为92.56%。增殖性DR患者TyG指数、RBP4水平高于非增殖性DR患者,nesfatin-1水平低于非增殖性DR患者(均P<0.05)。Spearman相关性分析显示,TyG指数、RBP4水平与DR病情程度呈正相关,nesfatin-1水平与DR病情程度呈负相关(r_(s)=0.557、0.392、-0.359,均P<0.05)。Pearson相关分析显示,T2DM并发DR患者TyG指数与nesfatin-1水平呈负相关,与RBP4水平呈正相关,nesfatin-1与RBP4水平呈负相关(r=-0.486、0.538、-0.592,均P<0.05)。结论:血清TyG指数、nesfatin-1、RBP4水平与DR发病风险及病情程度有关,可作为DR早期预测的标志物,且联合预测效能更好。
