目的探讨骨形成指标I型胶原氨基端肽原(procollagen type I N-terminal propeptide,PINP)与骨吸收指标β-异构C-端肽(beta-isomerized C-telopeptide,β-CTX)的表达在2型糖尿病(type 2 diabetes,T2DM)合并骨质疏松(osteoprosis,OP)中的...目的探讨骨形成指标I型胶原氨基端肽原(procollagen type I N-terminal propeptide,PINP)与骨吸收指标β-异构C-端肽(beta-isomerized C-telopeptide,β-CTX)的表达在2型糖尿病(type 2 diabetes,T2DM)合并骨质疏松(osteoprosis,OP)中的意义。方法将118例研究对象按双能X线检测骨密度(bone mineral density,BMD)的检查结果分为3组,骨量正常组41例,骨量减少组42例,骨质疏松组35例。记录其性别、年龄、身高、体重、体质指数(body mass index,BMI)、糖尿病病程等一般基线资料。使用全自动生化分析仪测定空腹血糖(fasting blood glucose,FBG)、血钙(blood calcium,Ca)、血磷(phosphate,P)、血清胆固醇(total cholesterol,TC)、甘油三酯(triglyceride,TG)、碱性磷酸酶(alkaline phosphatase,ALP)、甲状旁腺素(parathyroid hormone,PTH)等生化指标,高压液相法测定糖化血红蛋白(Hb A1c),ELISA法检测血清骨形成指标PINP及血清骨吸收指标β-CTX并进行组间比较。结果与骨量正常组比较,骨量减少组与OP组中的PINP、β-CTX均高于正常组(P<0.05),与骨量减少组相比,OP组中PINP、β-CTX均高于减少组(P<0.05)。股骨颈BMD与年龄、病程、FPG、Hb A1c、β-CTX、PINP呈负相关(r=-0.559、-0.368、-0.255、-0.284、-0.613、-0.314,P<0.05),与BMI无明显相关性(P>0.05)。结论 T2DM合并OP患者中骨形成与骨吸收均增高,属于高转换性的骨代谢,监测骨代谢标志物PINP与β-CTX,有助于早期诊断及防治T2DM合并OP的发生与发展。展开更多
目的探讨2型糖尿病(T2DM)合并骨质疏松患者血清I型胶原氨基端肽原(procollagen type I N-terminal propeptide,PINP)和β-异构C-端肽(beta-isomerized C-telopeptide,β-CTx)的变化及意义。方法采用电化学发光法测定60例T2DM患者(其中...目的探讨2型糖尿病(T2DM)合并骨质疏松患者血清I型胶原氨基端肽原(procollagen type I N-terminal propeptide,PINP)和β-异构C-端肽(beta-isomerized C-telopeptide,β-CTx)的变化及意义。方法采用电化学发光法测定60例T2DM患者(其中合并及无合并骨质疏松者各30例)及30例健康对照者血清PINP和β-CTx,并对性别、年龄、骨密度(BMD)、体质指数(BMI)、空腹胰岛素(FIns)、血清雌二醇(E2)、钙(Ca)、碱性磷酸酶(ALP)等指标进行比较。结果 T2DM合并骨质疏松组PINP水平高于无骨质疏松及对照组(P均<0.05),而T2DM无骨质疏松组PINP与对照组比较无统计学意义(P>0.05)。合并骨质疏松组β-CTx高于无骨质疏松组(P<0.05)及对照组(P<0.01),且无骨质疏松组β-CTx也高于对照组(P<0.05)。合并骨质疏松患者血清PINP与BMD呈负相关(r=-0.402),与ALP呈正相关(r=0.270);β-CTx与BMD、E2呈负相关(r=-0.457,r=-0.385),与ALP呈正相关(r=0.362),P值均<0.05。结论 T2DM合并骨质疏松患者与PINP、β-CTx水平升高有一定关系,二者与其他指标联合检测可为T2DM患者发生骨质疏松的早期诊断和病情监测提供帮助。展开更多
Objective To explore the inhibitory effects of He-Ne laser repeated irradiation on the collagen synthesis of cultured scar fibroblasts. Method Cultured fibroblasts derived from hypertrophic scars(HS) were irradiated w...Objective To explore the inhibitory effects of He-Ne laser repeated irradiation on the collagen synthesis of cultured scar fibroblasts. Method Cultured fibroblasts derived from hypertrophic scars(HS) were irradiated with He-Ne laser for 30 minutes at various power densities(10,50,100 and 150 mW/cm2),once a day for 3 consecutive days.In 24 hours after repeated irradiation collagen production and type I procollagen mRNA level of fibroblasts were measured with the incorporation of 3H proline and blot hybridization techniques respectively.Results Collagen synthesis and type I procollagen mRNA level remained unchanged when the laser was irradiated at the power density of 10 mW/cm2 or 50 mW/cm2.Compared with control,collagen synthesis and type I procollagne mRNA level were significantly decreases at the power density of 100 mW/cm2 or 150mW/cm2(P< 0.05).Type I procollagen mRNA level at the power density of 150 mW/cm2 was lower than that at the 100 mW/cm2 (P< 0.05).Conclusion Repeated He-Ne laser irradiation at the power density of 100 mW/cm2 or 150 mW/cm2 can suppress collagen synthesis of cultured fibroblasts in HS.The cause of suppression may be associated with down regulation of type I procollagen mRNA expression.展开更多
文摘目的探讨2型糖尿病(T2DM)合并骨质疏松患者血清I型胶原氨基端肽原(procollagen type I N-terminal propeptide,PINP)和β-异构C-端肽(beta-isomerized C-telopeptide,β-CTx)的变化及意义。方法采用电化学发光法测定60例T2DM患者(其中合并及无合并骨质疏松者各30例)及30例健康对照者血清PINP和β-CTx,并对性别、年龄、骨密度(BMD)、体质指数(BMI)、空腹胰岛素(FIns)、血清雌二醇(E2)、钙(Ca)、碱性磷酸酶(ALP)等指标进行比较。结果 T2DM合并骨质疏松组PINP水平高于无骨质疏松及对照组(P均<0.05),而T2DM无骨质疏松组PINP与对照组比较无统计学意义(P>0.05)。合并骨质疏松组β-CTx高于无骨质疏松组(P<0.05)及对照组(P<0.01),且无骨质疏松组β-CTx也高于对照组(P<0.05)。合并骨质疏松患者血清PINP与BMD呈负相关(r=-0.402),与ALP呈正相关(r=0.270);β-CTx与BMD、E2呈负相关(r=-0.457,r=-0.385),与ALP呈正相关(r=0.362),P值均<0.05。结论 T2DM合并骨质疏松患者与PINP、β-CTx水平升高有一定关系,二者与其他指标联合检测可为T2DM患者发生骨质疏松的早期诊断和病情监测提供帮助。
文摘Objective To explore the inhibitory effects of He-Ne laser repeated irradiation on the collagen synthesis of cultured scar fibroblasts. Method Cultured fibroblasts derived from hypertrophic scars(HS) were irradiated with He-Ne laser for 30 minutes at various power densities(10,50,100 and 150 mW/cm2),once a day for 3 consecutive days.In 24 hours after repeated irradiation collagen production and type I procollagen mRNA level of fibroblasts were measured with the incorporation of 3H proline and blot hybridization techniques respectively.Results Collagen synthesis and type I procollagen mRNA level remained unchanged when the laser was irradiated at the power density of 10 mW/cm2 or 50 mW/cm2.Compared with control,collagen synthesis and type I procollagne mRNA level were significantly decreases at the power density of 100 mW/cm2 or 150mW/cm2(P< 0.05).Type I procollagen mRNA level at the power density of 150 mW/cm2 was lower than that at the 100 mW/cm2 (P< 0.05).Conclusion Repeated He-Ne laser irradiation at the power density of 100 mW/cm2 or 150 mW/cm2 can suppress collagen synthesis of cultured fibroblasts in HS.The cause of suppression may be associated with down regulation of type I procollagen mRNA expression.
