BACKGROUND Osteoporosis is a systemic bone disease characterized by decreased bone mass,impaired bone mass,and reduced bone strength that leads to increased bone fragility and fracture.Type 2 diabetes mellitus(T2DM)co...BACKGROUND Osteoporosis is a systemic bone disease characterized by decreased bone mass,impaired bone mass,and reduced bone strength that leads to increased bone fragility and fracture.Type 2 diabetes mellitus(T2DM)complicated with osteoporosis is a common systemic metabolic bone disease,and reduced bone mass and bone strength are considered the main clinical features;however,the pathogenesis of this disease has not been fully clarified.Its occurrence is considered related to sex,age,and genetic factors.There are many risk factors for diabetes complicated with osteoporosis.Therefore,exploring these risk factors will help prevent it.AIM To investigate the relationships among serum glucagon-like peptide-1(GLP-1)levels,matrix Gla protein(MGP)levels,and diabetes with osteoporosis.METHODS Sixty patients with T2DM complicated with osteoporosis confirmed by the endocrinology department of our hospital were selected as the case group.Sixty T2DM patients with bone loss were selected as the control group.Sixty healthy participants were selected as the healthy group.The general data,bone mineral density index,and bone metabolic markers of the three groups were compared.The relationships among GLP-1 levels,MGP levels,and the bone mineral density index of the case group were analyzed using linear correlation analysis and a logistic regression model.RESULTS Differences in sex,smoking,and drinking among the case group,control group,and healthy group were not statistically significant(P>0.05).The mean age of the case group was older than those of the control and healthy groups(P<0.05).The body mass index,fasting plasma glucose level,HbA1c level,hypertension rate,and coronary heart disease rate of the case and control groups were higher than those of the healthy group(P<0.05).The serum GLP-1 and MGP levels of the case group were lower than those of the control and healthy groups;these differences were statistically significant(P<0.05).The serum GLP-1 and MGP levels of the control group were lower than those of the healthy group;these differences were statistically significant(P<0.05).The serum GLP-1 and MGP levels of the case group were significantly positively correlated with the bone mineral density values of the hip and lumbar spine(P<0.05).The results of the logistic regression model showed that age and duration of diabetes were independent risk factors for osteoporosis in diabetic patients(P<0.05)and that increased GLP-1 and MGP values were protective factors against osteoporosis in diabetic patients(P<0.05).CONCLUSION Serum GLP-1 and MGP levels of diabetic patients with osteoporosis were significantly decreased and positively correlated with bone mineral density and were independent risk factors for osteoporosis in diabetic patients.展开更多
目的 :探讨LIM矿化蛋白1(LIM mineralization protein 1,LMP-1)在大鼠磨牙牙髓损伤修复中的表达。方法 :建立大鼠磨牙牙髓损伤修复动物模型,用免疫组织化学染色方法观察LMP-1在大鼠牙髓损伤修复中的表达,并用Image-Pro Plus 6.0图像分...目的 :探讨LIM矿化蛋白1(LIM mineralization protein 1,LMP-1)在大鼠磨牙牙髓损伤修复中的表达。方法 :建立大鼠磨牙牙髓损伤修复动物模型,用免疫组织化学染色方法观察LMP-1在大鼠牙髓损伤修复中的表达,并用Image-Pro Plus 6.0图像分析软件及单因素方差分析比较各组间的差异。结果 :在正常大鼠牙髓组织中LMP-1表达阴性;在大鼠牙髓损伤后1 d,LMP-1表达于成牙本质细胞及部分牙髓成纤维细胞;术后3 d,LMP-1表达于坏死牙髓下方的细胞增殖层;术后7 d,LMP-1显著表达于增殖活跃的牙髓细胞及部分成牙本质细胞中。结论:LMP-1在牙髓损伤修复过程中呈时空特异性表达,可能参与成牙本质细胞及牙髓细胞的增殖、分化及修复性牙本质的形成。展开更多
目的以LIM矿化蛋白1(LIM mineralization protein 1,LMP-1)基因构建真核表达载体PET43.1a-LMP-1,转染人牙周膜细胞,观察对其生物学特性的影响。方法采用基因工程技术构建真核表达载体pET43.1a-LMP-1,脂质体法转染人牙周膜细胞,四唑盐比...目的以LIM矿化蛋白1(LIM mineralization protein 1,LMP-1)基因构建真核表达载体PET43.1a-LMP-1,转染人牙周膜细胞,观察对其生物学特性的影响。方法采用基因工程技术构建真核表达载体pET43.1a-LMP-1,脂质体法转染人牙周膜细胞,四唑盐比色法和酶联免疫吸附测定法测定真核表达载体pET43.1a-LMP-1转染对牙周膜细胞活性以及碱性磷酸酶(alkaline phosphatase,ALP)的影响。结果与空质粒转染组和空白对照组相比,pET43.1a-LMP-1真核表达载体转染后牙周膜细胞中LMP-1 mRNA和蛋白表达显著增强(P<0.05);细胞增殖明显增加;ALP表达明显增强,并随时间延长逐渐上升。结论外源性LMP-1转染进入牙周膜细胞能够促进细胞的增殖和矿化能力。展开更多
目的探讨维持性血液透析(maintenance hemodialysis,MHD)患者血清牙本质基质蛋白1(dentin matrix protein 1,DMP1)与矿物质代谢及骨密度的关系。方法以2019年7月~2020年7月于青岛大学附属青岛市市立医院血液净化中心行MHD治疗的95名患...目的探讨维持性血液透析(maintenance hemodialysis,MHD)患者血清牙本质基质蛋白1(dentin matrix protein 1,DMP1)与矿物质代谢及骨密度的关系。方法以2019年7月~2020年7月于青岛大学附属青岛市市立医院血液净化中心行MHD治疗的95名患者作为研究对象。收集研究对象的临床资料和实验室检查结果,ELISA测定血清DMP1水平,双能X线吸收法检测MHD患者股骨颈骨密度。采用Spearman相关性分析、多元线性回归分析MHD患者血清DMP1水平的影响因素。二元Logistic回归分析MHD患者发生骨密度低下的影响因素。结果①MHD患者的血清DMP1水平低于健康人群,差异有统计学意义(Z=-3.218,P=0.001)。②Spearman相关性分析显示DMP1水平与年龄、透析龄呈负相关,与肾小球滤过率(eGFR)、甲状旁腺激素(PTH)、股骨颈骨密度T值呈正相关(r值分别为-0.226,-0.223,0.210,0.294,0.370;P值分别为0.028,0.030,0.041,0.004,<0.001)。多元线性回归分析显示,血清DMP1水平的独立影响因素是PTH和股骨颈骨密度T值(β值分别为0.211,0.399;P值分别为0.032,0.001)。③二元Logistic回归分析显示,在调整了年龄、透析龄、白蛋白、碱性磷酸酶和血钙等混杂因素后,血清高DMP1水平是MHD患者发生骨密度低下的独立保护因素(OR:0.913,95%CI:0.845~0.986,P=0.020)。结论MHD患者的血清DMP1水平较健康人群低,且与矿物质代谢及骨密度相关。展开更多
基金Supported by Jiangxi Provincial Health and Family Planning Commission“Science and Technology Plan”.
文摘BACKGROUND Osteoporosis is a systemic bone disease characterized by decreased bone mass,impaired bone mass,and reduced bone strength that leads to increased bone fragility and fracture.Type 2 diabetes mellitus(T2DM)complicated with osteoporosis is a common systemic metabolic bone disease,and reduced bone mass and bone strength are considered the main clinical features;however,the pathogenesis of this disease has not been fully clarified.Its occurrence is considered related to sex,age,and genetic factors.There are many risk factors for diabetes complicated with osteoporosis.Therefore,exploring these risk factors will help prevent it.AIM To investigate the relationships among serum glucagon-like peptide-1(GLP-1)levels,matrix Gla protein(MGP)levels,and diabetes with osteoporosis.METHODS Sixty patients with T2DM complicated with osteoporosis confirmed by the endocrinology department of our hospital were selected as the case group.Sixty T2DM patients with bone loss were selected as the control group.Sixty healthy participants were selected as the healthy group.The general data,bone mineral density index,and bone metabolic markers of the three groups were compared.The relationships among GLP-1 levels,MGP levels,and the bone mineral density index of the case group were analyzed using linear correlation analysis and a logistic regression model.RESULTS Differences in sex,smoking,and drinking among the case group,control group,and healthy group were not statistically significant(P>0.05).The mean age of the case group was older than those of the control and healthy groups(P<0.05).The body mass index,fasting plasma glucose level,HbA1c level,hypertension rate,and coronary heart disease rate of the case and control groups were higher than those of the healthy group(P<0.05).The serum GLP-1 and MGP levels of the case group were lower than those of the control and healthy groups;these differences were statistically significant(P<0.05).The serum GLP-1 and MGP levels of the control group were lower than those of the healthy group;these differences were statistically significant(P<0.05).The serum GLP-1 and MGP levels of the case group were significantly positively correlated with the bone mineral density values of the hip and lumbar spine(P<0.05).The results of the logistic regression model showed that age and duration of diabetes were independent risk factors for osteoporosis in diabetic patients(P<0.05)and that increased GLP-1 and MGP values were protective factors against osteoporosis in diabetic patients(P<0.05).CONCLUSION Serum GLP-1 and MGP levels of diabetic patients with osteoporosis were significantly decreased and positively correlated with bone mineral density and were independent risk factors for osteoporosis in diabetic patients.
文摘目的探讨维持性血液透析(maintenance hemodialysis,MHD)患者血清牙本质基质蛋白1(dentin matrix protein 1,DMP1)与矿物质代谢及骨密度的关系。方法以2019年7月~2020年7月于青岛大学附属青岛市市立医院血液净化中心行MHD治疗的95名患者作为研究对象。收集研究对象的临床资料和实验室检查结果,ELISA测定血清DMP1水平,双能X线吸收法检测MHD患者股骨颈骨密度。采用Spearman相关性分析、多元线性回归分析MHD患者血清DMP1水平的影响因素。二元Logistic回归分析MHD患者发生骨密度低下的影响因素。结果①MHD患者的血清DMP1水平低于健康人群,差异有统计学意义(Z=-3.218,P=0.001)。②Spearman相关性分析显示DMP1水平与年龄、透析龄呈负相关,与肾小球滤过率(eGFR)、甲状旁腺激素(PTH)、股骨颈骨密度T值呈正相关(r值分别为-0.226,-0.223,0.210,0.294,0.370;P值分别为0.028,0.030,0.041,0.004,<0.001)。多元线性回归分析显示,血清DMP1水平的独立影响因素是PTH和股骨颈骨密度T值(β值分别为0.211,0.399;P值分别为0.032,0.001)。③二元Logistic回归分析显示,在调整了年龄、透析龄、白蛋白、碱性磷酸酶和血钙等混杂因素后,血清高DMP1水平是MHD患者发生骨密度低下的独立保护因素(OR:0.913,95%CI:0.845~0.986,P=0.020)。结论MHD患者的血清DMP1水平较健康人群低,且与矿物质代谢及骨密度相关。
