Objective:To investigate the effects of chronic sleep deprivation(CSD)on bone microstructure and peak bone mass(PBM)in SD rats.Methods:Twenty-four SD rats were randomly divided into CSD group and control group.In the ...Objective:To investigate the effects of chronic sleep deprivation(CSD)on bone microstructure and peak bone mass(PBM)in SD rats.Methods:Twenty-four SD rats were randomly divided into CSD group and control group.In the CSD group,a CSD model was established using a new sleep deprivation instrument for rats and mice,and intervened for 5 weeks.Bone turnover markers including P1NP and CTX-1 before and after the experiment were observed.After the experiment,the left femur were scanned by Micro-CT,and the cortical bone and bone trabecula were three-dimensionally reconstructed,respectively.The bone mineral density(BMD)and relevant parameters were detected.Results:CT images of the femur(proximal ends)showed significant trabecular loss in CSD rats.Trabecular parameters including bone volume fraction(BV/TV),trabecular number(Tb.N)and trabecular separation(Tb.Sp)in the CSD group were all lower than those in the control group.The bone cortex of the middle segment of the femur and tibia in CSD rats was also lower than that in the control group.The parameters of bone cortex including total tissue area(Tt.Ar),cortical bone area(Ct.Ar)and cortical bone thickness(Ct.Th)in the CSD group were significantly lower than those in the control group(P<0.01).After chronic CSD,BMD of both bone trabecula and bone cortex of the femur was lower,while the corresponding P1NP and CTX-1 were significantly higher than those in the control group.Conclusion:Sleep plays an important role in PBM formation.CSD accelerates bone turnover and thus significantly reducing PBM in SD rats.展开更多
The traditional Chinese medicine of Radix Hedysari plays an important role in invigorating gas for ascending, benefiting blood for promoting production of fluid, and promoting circulation for removing obstruction in c...The traditional Chinese medicine of Radix Hedysari plays an important role in invigorating gas for ascending, benefiting blood for promoting production of fluid, and promoting circulation for removing obstruction in collaterals, which is consistent with the principle of treatment for osteoporosis. This study is designed to investigate the bioactive components on increasing peak bone mass (PBM) by exploring the spectrum-effect relationship between chromatography fingerprints and effect. Multiple indicators are selected to evaluate the pharmacological activity. In fingerprints, 21 common peaks are obtained, five of which are identified. Furthermore, gray relational analysis (GRA) is a quantitative method of gray system theory and is used to describe the correlation degree of common peaks and pharmacological activities with relational value. 21 components are then divided into three different regions, of which ononin and calycosin play an extremely significant role in increasing PBM. In addition, factor analysis and hierarchical cluster analysis (HCA) are used to screen the optimal producing area for Radix Hedysari. This provides a comprehensive and efficient method to improve the quality evaluation of Radix Hedysari, confirming the bioactive components for PBM-enhancement and further develop its medicinal value.展开更多
Bone mass is a key determinant of osteoporosis and fragility fractures.Epidemiologic studies have shown that a 10%increase in peak bone mass(PBM)at the population level reduces the risk of fracture later in life by 50...Bone mass is a key determinant of osteoporosis and fragility fractures.Epidemiologic studies have shown that a 10%increase in peak bone mass(PBM)at the population level reduces the risk of fracture later in life by 50%.Low PBM is possibly due to the bone loss caused by various conditions or processes that occur during adolescence and young adulthood.Race,gender,and family history(genetics)are responsible for the majority of PBM,but other factors,such as physical activity,calcium and vitamin D intake,weight,smoking and alcohol consumption,socioeconomic status,age at menarche,and other secondary causes(diseases and medications),play important roles in PBM gain during childhood and adolescence.Hence,the optimization of lifestyle factors that affect PBM and bone strength is an important strategy to maximize PBM among adolescents and young people,and thus to reduce the low bone mass or osteoporosis risk in later life.This review aims to summarize the available evidence for the common but important factors that influence bone mass gain during growth and development and discuss the advances of developing high PBM.展开更多
目的:基于生物信息学探讨与女性骨峰值(peak bone mass,PBM)及骨质疏松症(osteoporosis,OP)相关的基因并进行验证。方法:通过基因表达数据库(gene expression omnibus database,GEO),利用DNA微阵列技术对高PBM和低PBM成年女性的单核细...目的:基于生物信息学探讨与女性骨峰值(peak bone mass,PBM)及骨质疏松症(osteoporosis,OP)相关的基因并进行验证。方法:通过基因表达数据库(gene expression omnibus database,GEO),利用DNA微阵列技术对高PBM和低PBM成年女性的单核细胞进行全基因组范围内的基因差异表达研究,通过聚类分析、GO富集和京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes,KEGG)分析差异基因,并进一步分析差异表达基因间的相互作用网络。建立OP大鼠模型,进行股骨颈组织染色,进一步验证差异基因的表达。结果:差异基因筛选共得到283个基因,与高PBM样本相比,低PBM样本中有135个基因表达上调,148个基因表达下调,总共有7个通路与12个差异基因被富集,涉及矿物质吸收与转运、细胞免疫等方面的多个基因表达存在差异。其中,CACNA1D基因编码的L型钙离子通道蛋白1.3(voltage-gated Ca^(2+)channel 1.3,CaV1.3)在OP大鼠模型股骨颈组织中表达显著增强。结论:以上结果提示CaV1.3基因表达水平的差异可能导致低PBM女性发生OP,提供了OP防治的潜在靶点。展开更多
目的通过测量乌鲁木齐市1837人次汉族、维吾尔族健康人群的骨密度（Bone Mineral DensityBMD）．确定本地区汉族、维吾尔族DXA测量骨密度的正常参考值范围，建立本地区汉族、维吾尔族DXA测量骨密度的正常数据库，并比较、探讨汉族、维...目的通过测量乌鲁木齐市1837人次汉族、维吾尔族健康人群的骨密度（Bone Mineral DensityBMD）．确定本地区汉族、维吾尔族DXA测量骨密度的正常参考值范围，建立本地区汉族、维吾尔族DXA测量骨密度的正常数据库，并比较、探讨汉族、维吾尔族BMD随年龄变化的规律。方法使用法国DMS公司生产的Lexxos型双能x线骨密度仪（Duelenergy X-ray absorptiometer，DEXA）对乌鲁木齐地区20，75岁以上的汉族、维吾尔族健康人群的腰椎前后位、左侧股骨近端进行BMD测定。按不同性别每5岁分为一年龄组，得出骨密度均值、标准差，并进行两组样本均数的f检验。结果汉族、维吾尔族男性及女性各部位出现骨峰值的年龄段略有不同，但多数均在40岁前随骨量逐渐增加而达到骨峰值。其后随年龄的增长BMD降低，女性BMD在50岁后加速下降，男性无加速下降的趋势。结论本研究建立了乌鲁木齐市汉族、维吾尔族DXA测量常规检查部位各年龄段BMD的正常值及骨质疏松诊断参考值，为今后骨质疏松的预防、诊断、研究提供了客观数据，也为国内的资料比较提供了依据。展开更多
基金2020 Youth Training Fund Project of the First Affiliated Hospital of Hainan Medical University(No.202010)
文摘Objective:To investigate the effects of chronic sleep deprivation(CSD)on bone microstructure and peak bone mass(PBM)in SD rats.Methods:Twenty-four SD rats were randomly divided into CSD group and control group.In the CSD group,a CSD model was established using a new sleep deprivation instrument for rats and mice,and intervened for 5 weeks.Bone turnover markers including P1NP and CTX-1 before and after the experiment were observed.After the experiment,the left femur were scanned by Micro-CT,and the cortical bone and bone trabecula were three-dimensionally reconstructed,respectively.The bone mineral density(BMD)and relevant parameters were detected.Results:CT images of the femur(proximal ends)showed significant trabecular loss in CSD rats.Trabecular parameters including bone volume fraction(BV/TV),trabecular number(Tb.N)and trabecular separation(Tb.Sp)in the CSD group were all lower than those in the control group.The bone cortex of the middle segment of the femur and tibia in CSD rats was also lower than that in the control group.The parameters of bone cortex including total tissue area(Tt.Ar),cortical bone area(Ct.Ar)and cortical bone thickness(Ct.Th)in the CSD group were significantly lower than those in the control group(P<0.01).After chronic CSD,BMD of both bone trabecula and bone cortex of the femur was lower,while the corresponding P1NP and CTX-1 were significantly higher than those in the control group.Conclusion:Sleep plays an important role in PBM formation.CSD accelerates bone turnover and thus significantly reducing PBM in SD rats.
基金supported by the National Natural Science Funds of China(Grant No.81703664)Science and Technology Funds of Lanzhou,China(Grant No.201603111)
文摘The traditional Chinese medicine of Radix Hedysari plays an important role in invigorating gas for ascending, benefiting blood for promoting production of fluid, and promoting circulation for removing obstruction in collaterals, which is consistent with the principle of treatment for osteoporosis. This study is designed to investigate the bioactive components on increasing peak bone mass (PBM) by exploring the spectrum-effect relationship between chromatography fingerprints and effect. Multiple indicators are selected to evaluate the pharmacological activity. In fingerprints, 21 common peaks are obtained, five of which are identified. Furthermore, gray relational analysis (GRA) is a quantitative method of gray system theory and is used to describe the correlation degree of common peaks and pharmacological activities with relational value. 21 components are then divided into three different regions, of which ononin and calycosin play an extremely significant role in increasing PBM. In addition, factor analysis and hierarchical cluster analysis (HCA) are used to screen the optimal producing area for Radix Hedysari. This provides a comprehensive and efficient method to improve the quality evaluation of Radix Hedysari, confirming the bioactive components for PBM-enhancement and further develop its medicinal value.
基金supported by the Zhejiang Provincial Natural Science Foundation for Distinguished Young Scholars of China(No.LR17H070001)the National Natural Science Foundation of China(No.81871831).
文摘Bone mass is a key determinant of osteoporosis and fragility fractures.Epidemiologic studies have shown that a 10%increase in peak bone mass(PBM)at the population level reduces the risk of fracture later in life by 50%.Low PBM is possibly due to the bone loss caused by various conditions or processes that occur during adolescence and young adulthood.Race,gender,and family history(genetics)are responsible for the majority of PBM,but other factors,such as physical activity,calcium and vitamin D intake,weight,smoking and alcohol consumption,socioeconomic status,age at menarche,and other secondary causes(diseases and medications),play important roles in PBM gain during childhood and adolescence.Hence,the optimization of lifestyle factors that affect PBM and bone strength is an important strategy to maximize PBM among adolescents and young people,and thus to reduce the low bone mass or osteoporosis risk in later life.This review aims to summarize the available evidence for the common but important factors that influence bone mass gain during growth and development and discuss the advances of developing high PBM.
文摘目的:基于生物信息学探讨与女性骨峰值(peak bone mass,PBM)及骨质疏松症(osteoporosis,OP)相关的基因并进行验证。方法:通过基因表达数据库(gene expression omnibus database,GEO),利用DNA微阵列技术对高PBM和低PBM成年女性的单核细胞进行全基因组范围内的基因差异表达研究,通过聚类分析、GO富集和京都基因与基因组百科全书(kyoto encyclopedia of genes and genomes,KEGG)分析差异基因,并进一步分析差异表达基因间的相互作用网络。建立OP大鼠模型,进行股骨颈组织染色,进一步验证差异基因的表达。结果:差异基因筛选共得到283个基因,与高PBM样本相比,低PBM样本中有135个基因表达上调,148个基因表达下调,总共有7个通路与12个差异基因被富集,涉及矿物质吸收与转运、细胞免疫等方面的多个基因表达存在差异。其中,CACNA1D基因编码的L型钙离子通道蛋白1.3(voltage-gated Ca^(2+)channel 1.3,CaV1.3)在OP大鼠模型股骨颈组织中表达显著增强。结论:以上结果提示CaV1.3基因表达水平的差异可能导致低PBM女性发生OP,提供了OP防治的潜在靶点。
文摘目的通过测量乌鲁木齐市1837人次汉族、维吾尔族健康人群的骨密度（Bone Mineral DensityBMD）．确定本地区汉族、维吾尔族DXA测量骨密度的正常参考值范围，建立本地区汉族、维吾尔族DXA测量骨密度的正常数据库，并比较、探讨汉族、维吾尔族BMD随年龄变化的规律。方法使用法国DMS公司生产的Lexxos型双能x线骨密度仪（Duelenergy X-ray absorptiometer，DEXA）对乌鲁木齐地区20，75岁以上的汉族、维吾尔族健康人群的腰椎前后位、左侧股骨近端进行BMD测定。按不同性别每5岁分为一年龄组，得出骨密度均值、标准差，并进行两组样本均数的f检验。结果汉族、维吾尔族男性及女性各部位出现骨峰值的年龄段略有不同，但多数均在40岁前随骨量逐渐增加而达到骨峰值。其后随年龄的增长BMD降低，女性BMD在50岁后加速下降，男性无加速下降的趋势。结论本研究建立了乌鲁木齐市汉族、维吾尔族DXA测量常规检查部位各年龄段BMD的正常值及骨质疏松诊断参考值，为今后骨质疏松的预防、诊断、研究提供了客观数据，也为国内的资料比较提供了依据。
