目的:应用定量CT(QCT)测量腰椎骨密度(BMD),分析不同年龄、生理时期女性腰椎BMD与腹部脂肪的相关性。方法:选取我院健康体检中心的体检女性300例,年龄25~85岁。根据年龄分为3组:青年组(n=82)、中年组(n=132)、老年组(n=86),根据不同生...目的:应用定量CT(QCT)测量腰椎骨密度(BMD),分析不同年龄、生理时期女性腰椎BMD与腹部脂肪的相关性。方法:选取我院健康体检中心的体检女性300例,年龄25~85岁。根据年龄分为3组:青年组(n=82)、中年组(n=132)、老年组(n=86),根据不同生理时期分为3组:绝经前组(n=169)、围绝经期组(n=33)、绝经后组(n=98);测量其体重、身高、腰围、臀围,并计算腰臀比、体重指数(BMI)。数据上传至Midways pro 6.1QCT分析系统,测量L 1~L 2椎体BMD、脐水平腹部脂肪面积(FA)、内脏脂肪面积(VFA),计算腰椎平均骨密度(vBMD)及腹壁脂肪面积(SFA)。分析不同年龄及不同生理时期女性腰椎BMD与腹部脂肪参数的相关性。结果:不同年龄组体重、臀围、腰围、腰臀比及BMI比较差异具有统计学意义(P<0.05),围绝经期前后女性体重、腰围及腰臀比差异具有统计学意义(P<0.05)。老年组和中年组的FA、VFA显著高于青年组,老年组的FA、VFA显著高于中年组,不同年龄组的vBMD、FA、VFA比较差异具有统计学意义(P<0.05)。青年组的vBMD与FA、VFA及SFA呈负相关,老年组的vBMD与BMI、VFA呈正相关(P<0.05)。绝经前组的vBMD显著高于绝经后组和围绝经期组,围绝经期组的vBMD显著高于绝经后组。绝经后组和围绝经期组的FA、VFA显著高于绝经前组;绝经前女性vBMD与VFA呈负相关,围绝经期女性vBMD与FA、VFA呈负相关,绝经后女性vBMD与VFA呈正相关(P<0.05)。结论:女性腰椎BMD与腹部脂肪组织的关系较为复杂,不同年龄段及不同生理时期两者关系各异,对于围绝经期而言,脂肪组织与雌激素可能共同参与对机体BMD的调节,因此需定期检测BMD及脂肪含量,对骨质疏松做到早发现、早干预,提高女性生活质量。展开更多
Myostatin, a new member of the TGF-p superfamily, is predominantly expressed in skeletal muscle cells and functions as a negative regulator of skeletal muscle growth in animals. Recently, we have reported three single...Myostatin, a new member of the TGF-p superfamily, is predominantly expressed in skeletal muscle cells and functions as a negative regulator of skeletal muscle growth in animals. Recently, we have reported three single nucleotide polymorphisms (SNPs) in the chicken my-ostatin gene. Herein, we investigate the association of those SNPs with the production traits in a F2 chicken line derived from Broilers crossing to Silky with the least square analysis. The results show that the BB and AA genotypes are strongly associated with abdominal fat weight (AFW), abdominal fat percentage (AFP), and birth weight (BW) (P < 0.05). Breast muscle percentage (BMP) of the AA type is higher than that of the AB type. The breast muscle weight and breast muscle percentages of F2 individuals have significant difference between CC and DD genotypes (P< 0.05). Breast muscle weight (BMW) of EF birds is higher than that of EE birds (P< 0.05). In this report, we present the first genetic evidence to show that chicken myostatin not only plays an important role in controlling skeletal muscle growth and differentiation, but also may be involved in regulation of adipose growth in chicken.展开更多
目的研究定量CT和磁共振成像(MRI)检查在测量腹部脂肪面积及分布的相关性及一致性。方法对44例健康研究对象空腹状态下同一天行腹部定量CT和MRI检查,选取腰椎4/5层面图像,CT图像采用定量CT分析软件QCT PRO v5.0测量,MRI图像采用图像分...目的研究定量CT和磁共振成像(MRI)检查在测量腹部脂肪面积及分布的相关性及一致性。方法对44例健康研究对象空腹状态下同一天行腹部定量CT和MRI检查,选取腰椎4/5层面图像,CT图像采用定量CT分析软件QCT PRO v5.0测量,MRI图像采用图像分析软件Analyze v12.0进行测量,半自动区分该层面腹内脂肪和皮下脂肪并测量其面积。统计分析两者测量结果的相关性和一致性。结果定量CT和MRI对腹部皮下脂肪面积(SFA)、腹内脂肪面积(SFA)、总脂肪面积(TFA)的测量呈明显正相关(r值分别为0.96、0.94、0.96,P<0.05)。Bland-Altman分析显示MRI和定量CT测得的腹部脂肪面积的差值很小(差值均数分别为8.6、-2.8、5.7cm2)。结论定量CT和MRI对腹部脂肪面积的测量结果具有明显相关性和较好的一致性,二者有可比性且在临床应用中可互相代替。展开更多
Objective To examine the association of visceral adiposity as measured by VFA and WC with lipid and glucose metabolic biomarkers in abdominally obese Chinese adults,and to assess whether WC could be an indicator of vi...Objective To examine the association of visceral adiposity as measured by VFA and WC with lipid and glucose metabolic biomarkers in abdominally obese Chinese adults,and to assess whether WC could be an indicator of visceral fat.Methods WC and VFA were measured in 155 overweight and obese adults.A fasting blood sample was collected from participant（n=118） whose VFA ≥100 cm2 for analyses of lipid and glucose profile.The relationship between VFA and WC and biomarkers was investigated.Results WC and VFA were significantly interrelated.The coincidence rate of abdominal obesity determined by Japanese VFA and Chinese WC criteria increased across age quartiles in women from 51.7% to 96.2%.A large WC was associated significantly with low HDL-cholesterol concentration（P0.01） and the association was weakened by additional control of VFA.WC and VFA were positively associated with glucose,hemoglobin A1c and insulin concentrations（P0.05 except for the association of VFA with insulin：P0.01）,and all the associations were not significant by additional control of either WC or VFA.As WC quartiles increased,significant stepwise increments in triglyceride,glucose,hemoglobin A1c and insulin and descent in HDL-cholesterol were observed.However,triglyceride and HDL-cholesterol were not significantly different when compared across VFA quartiles.Conclusion Higher visceral fat was associated with an adverse lipid and glucose profile.WC can be a moderate predictor for visceral fat and provides a feasible measurement to estimate glucose metabolic risks.Further studies are warranted to establish age-specific WC cutoffs.展开更多
文摘目的评价绝经后女性腹部脂肪和椎旁肌肉与骨密度的相关性。方法选取2016年4月至2016年10月就诊于我院的绝经后女性75例,年龄45~83(62.2±9.1)岁,应用DXA(dual-energy X-ray absorptiometry,DXA)测量腰椎骨密度,再对受检者行腹部CT扫描,并在后处理工作站选定平脐水平的CT片,勾画出腹部脂肪和椎旁肌肉的面积。为了进一步分析,将样本根据体重指数分为2组,A组18.5≤BMI<24,B组BMI≥24。结果腰椎骨密度与体重指数、腹部皮下脂肪、腹部内脏脂肪、腹部总脂肪、腰大肌及竖脊肌均呈正相关(r=0.264,P=0.022;r=0.244,P=0.035;r=0.286,P=0.013;r=0.298,P=0.009;r=0.371,P=0.001;r=0.258,P=0.025)。通过将BMI(body Mass Index)分为2组后得到结果:A组骨密度主要与腰大肌和竖脊肌呈正相关(r=0.479,P=0.011;r=0.424,P=0.028),B组骨密度主要与内脏脂肪和总脂肪呈正相关(r=0.318,P=0.028;r=0.339,P=0.019)。结论目前研究结果表明,对于绝经后女性而言,腹部脂肪和椎旁肌肉对骨密度具有保护作用,适当的体育锻炼和保持正常的体重更有利于预防骨质疏松症。
文摘目的:应用定量CT(QCT)测量腰椎骨密度(BMD),分析不同年龄、生理时期女性腰椎BMD与腹部脂肪的相关性。方法:选取我院健康体检中心的体检女性300例,年龄25~85岁。根据年龄分为3组:青年组(n=82)、中年组(n=132)、老年组(n=86),根据不同生理时期分为3组:绝经前组(n=169)、围绝经期组(n=33)、绝经后组(n=98);测量其体重、身高、腰围、臀围,并计算腰臀比、体重指数(BMI)。数据上传至Midways pro 6.1QCT分析系统,测量L 1~L 2椎体BMD、脐水平腹部脂肪面积(FA)、内脏脂肪面积(VFA),计算腰椎平均骨密度(vBMD)及腹壁脂肪面积(SFA)。分析不同年龄及不同生理时期女性腰椎BMD与腹部脂肪参数的相关性。结果:不同年龄组体重、臀围、腰围、腰臀比及BMI比较差异具有统计学意义(P<0.05),围绝经期前后女性体重、腰围及腰臀比差异具有统计学意义(P<0.05)。老年组和中年组的FA、VFA显著高于青年组,老年组的FA、VFA显著高于中年组,不同年龄组的vBMD、FA、VFA比较差异具有统计学意义(P<0.05)。青年组的vBMD与FA、VFA及SFA呈负相关,老年组的vBMD与BMI、VFA呈正相关(P<0.05)。绝经前组的vBMD显著高于绝经后组和围绝经期组,围绝经期组的vBMD显著高于绝经后组。绝经后组和围绝经期组的FA、VFA显著高于绝经前组;绝经前女性vBMD与VFA呈负相关,围绝经期女性vBMD与FA、VFA呈负相关,绝经后女性vBMD与VFA呈正相关(P<0.05)。结论:女性腰椎BMD与腹部脂肪组织的关系较为复杂,不同年龄段及不同生理时期两者关系各异,对于围绝经期而言,脂肪组织与雌激素可能共同参与对机体BMD的调节,因此需定期检测BMD及脂肪含量,对骨质疏松做到早发现、早干预,提高女性生活质量。
基金supported by the Chinese National Foundation to Outstanding Young ScientistsNational Natural Science Foundation of China(Grant No.30170462)National High-Tech Project.
文摘Myostatin, a new member of the TGF-p superfamily, is predominantly expressed in skeletal muscle cells and functions as a negative regulator of skeletal muscle growth in animals. Recently, we have reported three single nucleotide polymorphisms (SNPs) in the chicken my-ostatin gene. Herein, we investigate the association of those SNPs with the production traits in a F2 chicken line derived from Broilers crossing to Silky with the least square analysis. The results show that the BB and AA genotypes are strongly associated with abdominal fat weight (AFW), abdominal fat percentage (AFP), and birth weight (BW) (P < 0.05). Breast muscle percentage (BMP) of the AA type is higher than that of the AB type. The breast muscle weight and breast muscle percentages of F2 individuals have significant difference between CC and DD genotypes (P< 0.05). Breast muscle weight (BMW) of EF birds is higher than that of EE birds (P< 0.05). In this report, we present the first genetic evidence to show that chicken myostatin not only plays an important role in controlling skeletal muscle growth and differentiation, but also may be involved in regulation of adipose growth in chicken.
文摘目的研究定量CT和磁共振成像(MRI)检查在测量腹部脂肪面积及分布的相关性及一致性。方法对44例健康研究对象空腹状态下同一天行腹部定量CT和MRI检查,选取腰椎4/5层面图像,CT图像采用定量CT分析软件QCT PRO v5.0测量,MRI图像采用图像分析软件Analyze v12.0进行测量,半自动区分该层面腹内脂肪和皮下脂肪并测量其面积。统计分析两者测量结果的相关性和一致性。结果定量CT和MRI对腹部皮下脂肪面积(SFA)、腹内脂肪面积(SFA)、总脂肪面积(TFA)的测量呈明显正相关(r值分别为0.96、0.94、0.96,P<0.05)。Bland-Altman分析显示MRI和定量CT测得的腹部脂肪面积的差值很小(差值均数分别为8.6、-2.8、5.7cm2)。结论定量CT和MRI对腹部脂肪面积的测量结果具有明显相关性和较好的一致性,二者有可比性且在临床应用中可互相代替。
文摘Objective To examine the association of visceral adiposity as measured by VFA and WC with lipid and glucose metabolic biomarkers in abdominally obese Chinese adults,and to assess whether WC could be an indicator of visceral fat.Methods WC and VFA were measured in 155 overweight and obese adults.A fasting blood sample was collected from participant（n=118） whose VFA ≥100 cm2 for analyses of lipid and glucose profile.The relationship between VFA and WC and biomarkers was investigated.Results WC and VFA were significantly interrelated.The coincidence rate of abdominal obesity determined by Japanese VFA and Chinese WC criteria increased across age quartiles in women from 51.7% to 96.2%.A large WC was associated significantly with low HDL-cholesterol concentration（P0.01） and the association was weakened by additional control of VFA.WC and VFA were positively associated with glucose,hemoglobin A1c and insulin concentrations（P0.05 except for the association of VFA with insulin：P0.01）,and all the associations were not significant by additional control of either WC or VFA.As WC quartiles increased,significant stepwise increments in triglyceride,glucose,hemoglobin A1c and insulin and descent in HDL-cholesterol were observed.However,triglyceride and HDL-cholesterol were not significantly different when compared across VFA quartiles.Conclusion Higher visceral fat was associated with an adverse lipid and glucose profile.WC can be a moderate predictor for visceral fat and provides a feasible measurement to estimate glucose metabolic risks.Further studies are warranted to establish age-specific WC cutoffs.
