目的:研究水平跑台训练后生长期大鼠外周血单个核细胞(PBMC)中wnt信号途径的Jun、Mmp9、Cox2、Tnf和Msx2 m RNA表达水平,揭示其与骨重塑的关系。方法:24只2月龄SD雄性大鼠随机分成对照组(n=12)和运动组(n=12),运动组以25 m/min,50 min/d...目的:研究水平跑台训练后生长期大鼠外周血单个核细胞(PBMC)中wnt信号途径的Jun、Mmp9、Cox2、Tnf和Msx2 m RNA表达水平,揭示其与骨重塑的关系。方法:24只2月龄SD雄性大鼠随机分成对照组(n=12)和运动组(n=12),运动组以25 m/min,50 min/d,5 d/w水平跑台运动12 w;训练结束进行大鼠体重、全身肌肉含量、整体BMD和BMC检测,股骨BMD和骨形态学测量,Micro-CT扫描观察股骨远端松质骨骨微结构;分离PBMC,QRT-PCR检测其Jun、Mmp9、Cox2、Tnf和Msx2 m RNA表达。结果:与对照组相比,运动组大鼠除了体重显著下降外,全身肌肉含量、整体BMD、BMC和股骨BMD增加,但均不具有统计学意义;股骨长度、厚度和宽度均无显著性变化;股骨远端松质骨骨微结构参数除骨小梁数量(Tb.N)和骨小梁分离度(Tb.Sp)无显著性变化外,骨体积分数(BV/TV)和骨小梁厚度(Tb.Th)显著增加(P<0.05),骨表面积和体积比(BS/BV)及骨小梁模式因子(Tb.Pf)显著降低(P<0.05);股骨远端松质骨骨小梁数量增多,小梁间隔小、断裂少;大鼠PBMC中Msx2 m RNA表达上调,Jun、Mmp9和Cox-2 m RNA表达下调,Tnf无表达差异。结论:运动后PBMC中Jun、Mmp9、Cox2、Tnf和Msx2 m RNA表达变化与骨重塑变化一致,提示上述基因可作为反映运动对骨重塑影响的候选分子标记。展开更多
G804.6过度跳跃训练对生长期大鼠骨生物力学性质的影响=Theinfluence to the biomechanical character of bone ofthe rat in growing[刊,中.A]/杨国敏(上海体育学院)∥体育学刊.-2004,11(3).-13-134参4表7(SJ)过度训练∥跳跃∥鼠∥生...G804.6过度跳跃训练对生长期大鼠骨生物力学性质的影响=Theinfluence to the biomechanical character of bone ofthe rat in growing[刊,中.A]/杨国敏(上海体育学院)∥体育学刊.-2004,11(3).-13-134参4表7(SJ)过度训练∥跳跃∥鼠∥生物力学∥骨∥影响 研究过度训练对生长期大鼠骨生物力学性质的影响。对生长期大鼠采用跳跃训练的方法,建立过度跳跃训练模型。8周后测定大鼠的体重、血红蛋白、血尿素氮和血清睾酮、皮质醇等指标,同时测定其股骨生物力学性质。结果:(1)大鼠过度跳跃训练模型建立成功:(2)大鼠股骨纵轴方向成长受到了明显抑制:(3)展开更多
OBJECTIVE:This study was conducted to evaluate the effect of Amomum villosum on longitudinal bone growth.METHODS:Adolescent female Sprague-Dawley rats were divided into 3 groups and treated for 4 days:control(distille...OBJECTIVE:This study was conducted to evaluate the effect of Amomum villosum on longitudinal bone growth.METHODS:Adolescent female Sprague-Dawley rats were divided into 3 groups and treated for 4 days:control(distilled water,p.o.),recombinant human growth hormone(rhGH;100 μg/kg,s.c.),and A.villosum(500 mg/kg,p.o.) groups.On day 3,tetracycline(20 g/kg,i.p.) was injected for growth plate identification.On days 2,3 and 4,5-bromo-2'-deoxyuridine(BrdU)(50 mg/kg,i.p.) was injected to label proliferating cells.On day 5,tibias were dissected and fixed in 4% paraformaldehyde,dehydrated,and sectioned for immunohistochemistry and histomorphometry.RESULTS:The rate of bone growth in the A.villosum and rhGH groups increased to(410 ± 44) and(389 ± 46) μm/day(P<0.01),respectively,as compared with the control(330.7 ± 34.7) μm/day.The thickness of the growth plates also increased to(591 ± 37) and(598 ± 32) μm,respectively,as compared with the control(524± 89) μm(P<0.001).The number of BrdU-positive cells in the chondrocytes of the A.villosum and rhGH groups was also significantly higher(126±24) and(143±18) cells/mm 2,respectively) than in the control(109 ± 25) mm 2(P<0.05).Insulin-like growth factor-1 and bone morphogenetic protein-2 in the A.villosum and rhGH groups were highly expressed in the growth plate as compared with the control samples,indicating increased bone formation.CONCLUSIONS:A.villosum could be used to treat growth retardation during adolescence.展开更多
文摘目的:研究水平跑台训练后生长期大鼠外周血单个核细胞(PBMC)中wnt信号途径的Jun、Mmp9、Cox2、Tnf和Msx2 m RNA表达水平,揭示其与骨重塑的关系。方法:24只2月龄SD雄性大鼠随机分成对照组(n=12)和运动组(n=12),运动组以25 m/min,50 min/d,5 d/w水平跑台运动12 w;训练结束进行大鼠体重、全身肌肉含量、整体BMD和BMC检测,股骨BMD和骨形态学测量,Micro-CT扫描观察股骨远端松质骨骨微结构;分离PBMC,QRT-PCR检测其Jun、Mmp9、Cox2、Tnf和Msx2 m RNA表达。结果:与对照组相比,运动组大鼠除了体重显著下降外,全身肌肉含量、整体BMD、BMC和股骨BMD增加,但均不具有统计学意义;股骨长度、厚度和宽度均无显著性变化;股骨远端松质骨骨微结构参数除骨小梁数量(Tb.N)和骨小梁分离度(Tb.Sp)无显著性变化外,骨体积分数(BV/TV)和骨小梁厚度(Tb.Th)显著增加(P<0.05),骨表面积和体积比(BS/BV)及骨小梁模式因子(Tb.Pf)显著降低(P<0.05);股骨远端松质骨骨小梁数量增多,小梁间隔小、断裂少;大鼠PBMC中Msx2 m RNA表达上调,Jun、Mmp9和Cox-2 m RNA表达下调,Tnf无表达差异。结论:运动后PBMC中Jun、Mmp9、Cox2、Tnf和Msx2 m RNA表达变化与骨重塑变化一致,提示上述基因可作为反映运动对骨重塑影响的候选分子标记。
文摘G804.6过度跳跃训练对生长期大鼠骨生物力学性质的影响=Theinfluence to the biomechanical character of bone ofthe rat in growing[刊,中.A]/杨国敏(上海体育学院)∥体育学刊.-2004,11(3).-13-134参4表7(SJ)过度训练∥跳跃∥鼠∥生物力学∥骨∥影响 研究过度训练对生长期大鼠骨生物力学性质的影响。对生长期大鼠采用跳跃训练的方法,建立过度跳跃训练模型。8周后测定大鼠的体重、血红蛋白、血尿素氮和血清睾酮、皮质醇等指标,同时测定其股骨生物力学性质。结果:(1)大鼠过度跳跃训练模型建立成功:(2)大鼠股骨纵轴方向成长受到了明显抑制:(3)
基金Supported by the Fund of Amomum villosum in bone growth
文摘OBJECTIVE:This study was conducted to evaluate the effect of Amomum villosum on longitudinal bone growth.METHODS:Adolescent female Sprague-Dawley rats were divided into 3 groups and treated for 4 days:control(distilled water,p.o.),recombinant human growth hormone(rhGH;100 μg/kg,s.c.),and A.villosum(500 mg/kg,p.o.) groups.On day 3,tetracycline(20 g/kg,i.p.) was injected for growth plate identification.On days 2,3 and 4,5-bromo-2'-deoxyuridine(BrdU)(50 mg/kg,i.p.) was injected to label proliferating cells.On day 5,tibias were dissected and fixed in 4% paraformaldehyde,dehydrated,and sectioned for immunohistochemistry and histomorphometry.RESULTS:The rate of bone growth in the A.villosum and rhGH groups increased to(410 ± 44) and(389 ± 46) μm/day(P<0.01),respectively,as compared with the control(330.7 ± 34.7) μm/day.The thickness of the growth plates also increased to(591 ± 37) and(598 ± 32) μm,respectively,as compared with the control(524± 89) μm(P<0.001).The number of BrdU-positive cells in the chondrocytes of the A.villosum and rhGH groups was also significantly higher(126±24) and(143±18) cells/mm 2,respectively) than in the control(109 ± 25) mm 2(P<0.05).Insulin-like growth factor-1 and bone morphogenetic protein-2 in the A.villosum and rhGH groups were highly expressed in the growth plate as compared with the control samples,indicating increased bone formation.CONCLUSIONS:A.villosum could be used to treat growth retardation during adolescence.
