Objectives To investigate the effects of testosterone enanthate (TE) on serum lip- ids and lipoproteins metabolism and the expression of androgen receptor (AR) , estrogen receptor beta ( ER - β) and platelet derived ...Objectives To investigate the effects of testosterone enanthate (TE) on serum lip- ids and lipoproteins metabolism and the expression of androgen receptor (AR) , estrogen receptor beta ( ER - β) and platelet derived growth factor beta ( PDGFR - β) in aortic vascular smooth muscle tissues (VSMTs). Methods Forty aged male rats were ran- domly divided into 4 groups, group A (placebo group) , group B (2. 5 mg/kg intramuscular injection of TE once a week ) , group C (5.0 mg/kg intramuscular injection of TE once a week ) , group D ( 10. 0 mg/kg intramus- cular injection of TE once a week). All animals were fed freely during 16 - week treatment periods. The ex- pression of AR ,ER - βand PDGFR - β were studied by Western bolt. Results Average serum LDL - C was lower in group D than that in group A ( p < 0. 01 ). Compared with the other groups, average serum TC was also lower in group D (p <0. 05). AR expression in aortic vascular smooth muscle tissues could be regulated by TE: 99.50 ±21.74, 125.38 ±28.68 and 101.98 ± 15.42 for TE concentrations at 2.5 mg/kg, 5.0 mg/kg and 10.0 mg/kg, respectively , the expression of ER - β could be regulated by TE: 92. 34 ± 18. 68, 47. 72 ± 18.12, 82.13 ±23.50, and the expression of PDGFR - β could be regulated as well by TE: 219.70 ±45. 59, 50.16 ±9. 72, 125.36 ±15. 74(Data for AR ,ER-β and PDGFR - β protein band intensity were expressed with x ± s, with control group taken as 100 ).Conclusions This study indicates that androgens have significant effects on serum lipids and lipoprotein metabolism. Testosterone enanthate at 5. 0 mg/kg can stimulate the expression of AR, but inhibite the expres- sion of PDGFR. Testosterone enanthate at the concen- trations of 5. 0 mg/kg and 10. 0 mg/kg can inhibite the expression of ER - β.展开更多
microRNAs （miRNAs） play an important regulatory role in the self-renewal and differentiation of stem cells. In this study, we examined the effects of miRNA-124 （miR-124） overexpression in bone marrow-derived mesen...microRNAs （miRNAs） play an important regulatory role in the self-renewal and differentiation of stem cells. In this study, we examined the effects of miRNA-124 （miR-124） overexpression in bone marrow-derived mesenchymal stem cells. In particular, we focused on the effect of overexpression on the differentiation of bone marrow-derived mesenchymal stem cells into neurons. First, we used GeneChip technology to analyze the expression of miRNAs in bone marrow-derived mesen- chymal stem cells, neural stem cells and neurons, miR-124 expression was substantially reduced in bone marrow-derived mesenchymal stem cells compared with the other cell types. We con- structed a lentiviral vector overexpressing miR-124 and transfected it into bone marrow-derived mesenchymal stem cells. Intracellular expression levels of the neuronal early markers [3-III tu- bulin and microtubule-associated protein-2 were significantly increased, and apoptosis induced by oxygen and glucose deprivation was reduced in transfected cells. After miR-124-transfected bone marrow-derived mesenchymal stem cells were transplanted into the injured rat spinal cord, a large number of cells positive for the neuronal marker neurofilament-200 were observed in the transplanted region. The Basso-Beattie-Bresnahan locomotion scores showed that the motor function of the hind limb of rats with spinal cord injury was substantially improved. These re- sults suggest that miR-124 plays an important role in the differentiation of bone marrow-derived mesenchymal stem cells into neurons. Our findings should facilitate the development of novel strategies for enhancing the therapeutic efficacy of bone marrow-derived mesenchymal stem cell transplantation for spinal cord injury.展开更多
In order to investigate the role played by platelet derived growth factor-BB (PDGF-BB) in the pathogenesis of pulmonary interstitial fibrosis in rats repeatedly infected with mycoplasma pneumoniae (MP), a rat MP infec...In order to investigate the role played by platelet derived growth factor-BB (PDGF-BB) in the pathogenesis of pulmonary interstitial fibrosis in rats repeatedly infected with mycoplasma pneumoniae (MP), a rat MP infection model was developed by infecting rats with MP for 9 times during a period of 24 weeks with a technique of ultrasonic nebulizing inhalation. Then in situ hybridization was performed with PDGF-B chain cDNA probe and the results were quantitatively analyzed to measure the changes in PDGF-B chain mRNA expression in the lung tissue. The results showed that: (1) MP polymerase chain reaction (PCR) tests showed positive results in the bronchoalveolar lavage fluid (BALF ) from all of the MP-infected rats (n = 4) while they were all negative in BALF from the control animals (n = 4, P<0. 05) and in BALF from those rats both infected with MP and, at the same time, treated with erythromycin (n = 4, P<0. 05). Bacterial cultures of the bronchial and lung tissue were negative in all three groups. The observation under a transmission electron microscope indicated that the interalveo-lar septa were widened with increased amount of collagen in the MP-infected rats while there were no obvious abnormalities in the other two groups. (2) Strong positive expression of PDGF-B chain mRNA was found in the plasma of mono-cytes and macrophages located in the locally widened interalveolar septa and alveolar spaces in the lung tissue from the MP-infected animals with the integral optical densities being 37. 42 ±9. 05 (n = 4) which was significantly higher than the values of control group (0. 42 + 0. 08, n = 4, P<0. 01) and of the group with MP-infec-tion plus erythromycin treatment (1. 62 ± 0. 40, n = 4, P<0. 01). These results suggest that PDGF-BB may be involved in the process of the development of pulmonary interstitial fibrosis caused by the repeated MP-infection. It may be an important growth factor for mediating the roles of monocytes and macrophages to promote the aggregation and proliferation of fibroblasts which ca展开更多
目的探讨通调针刺法联合芪蛭三七汤治疗脑卒中后运动障碍的效果及对血清脑源性神经营养因子(brain derived neurotrophic factor,BDNF)、神经肽Y(neuropeptide,NPY)水平的影响。方法选取2019年9月—2022年8月医院收治的102例脑卒中后运...目的探讨通调针刺法联合芪蛭三七汤治疗脑卒中后运动障碍的效果及对血清脑源性神经营养因子(brain derived neurotrophic factor,BDNF)、神经肽Y(neuropeptide,NPY)水平的影响。方法选取2019年9月—2022年8月医院收治的102例脑卒中后运动障碍患者,依照随机数表法分为研究组(n=51例)和对照组(n=51例),对照组采用基础康复训练治疗,研究组另给予通调针刺法联合芪蛭三七汤治疗,比较两组患者中医症状评分,临床疗效,Fugl-Meyer运动功能量表(Fugl Meyer Motor Function Assessment,FMA)评分、Berg平衡量表(Berg Balance Scale,BBS)评分、改良Barthel指数、美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分,血清BDNF、NPY水平及不良反应。结果治疗后,两组患者半身不遂、偏身障碍、意识模糊、口舌歪斜、气短乏力、手足肿胀评分均降低(P<0.05),且研究组半身不遂、偏身障碍、意识模糊、口舌歪斜、气短乏力、手足肿胀评分均低于对照组(P<0.05);研究组总有效率高于对照组,差异有统计学意义(P<0.05);治疗后,两组患者FMA评分和BBS评分均升高(P<0.05),且研究组更高(P<0.05);治疗后,两组患者改良Barthel指数均升高(P<0.05),且研究组更高(P<0.05),两组NIHSS评分均降低(P<0.05),且研究组更低,差异有统计学意义(P<0.05);治疗后,两组血清BDNF水平均升高(P<0.05),且研究组更高,差异有统计学意义(P<0.05),两组血清NPY水平均降低(P<0.05),且研究组更低,差异有统计学意义(P<0.05);不良反应发生率比较,差异无统计学意义(P>0.05)。结论通调针刺法联合芪蛭三七汤用于治疗脑卒中后运动障碍患者疗效确切,能够改善运动障碍及BDNF、NPY水平。展开更多
文摘Objectives To investigate the effects of testosterone enanthate (TE) on serum lip- ids and lipoproteins metabolism and the expression of androgen receptor (AR) , estrogen receptor beta ( ER - β) and platelet derived growth factor beta ( PDGFR - β) in aortic vascular smooth muscle tissues (VSMTs). Methods Forty aged male rats were ran- domly divided into 4 groups, group A (placebo group) , group B (2. 5 mg/kg intramuscular injection of TE once a week ) , group C (5.0 mg/kg intramuscular injection of TE once a week ) , group D ( 10. 0 mg/kg intramus- cular injection of TE once a week). All animals were fed freely during 16 - week treatment periods. The ex- pression of AR ,ER - βand PDGFR - β were studied by Western bolt. Results Average serum LDL - C was lower in group D than that in group A ( p < 0. 01 ). Compared with the other groups, average serum TC was also lower in group D (p <0. 05). AR expression in aortic vascular smooth muscle tissues could be regulated by TE: 99.50 ±21.74, 125.38 ±28.68 and 101.98 ± 15.42 for TE concentrations at 2.5 mg/kg, 5.0 mg/kg and 10.0 mg/kg, respectively , the expression of ER - β could be regulated by TE: 92. 34 ± 18. 68, 47. 72 ± 18.12, 82.13 ±23.50, and the expression of PDGFR - β could be regulated as well by TE: 219.70 ±45. 59, 50.16 ±9. 72, 125.36 ±15. 74(Data for AR ,ER-β and PDGFR - β protein band intensity were expressed with x ± s, with control group taken as 100 ).Conclusions This study indicates that androgens have significant effects on serum lipids and lipoprotein metabolism. Testosterone enanthate at 5. 0 mg/kg can stimulate the expression of AR, but inhibite the expres- sion of PDGFR. Testosterone enanthate at the concen- trations of 5. 0 mg/kg and 10. 0 mg/kg can inhibite the expression of ER - β.
基金supported by the National Natural Science Foundation of China,No.81070971
文摘microRNAs （miRNAs） play an important regulatory role in the self-renewal and differentiation of stem cells. In this study, we examined the effects of miRNA-124 （miR-124） overexpression in bone marrow-derived mesenchymal stem cells. In particular, we focused on the effect of overexpression on the differentiation of bone marrow-derived mesenchymal stem cells into neurons. First, we used GeneChip technology to analyze the expression of miRNAs in bone marrow-derived mesen- chymal stem cells, neural stem cells and neurons, miR-124 expression was substantially reduced in bone marrow-derived mesenchymal stem cells compared with the other cell types. We con- structed a lentiviral vector overexpressing miR-124 and transfected it into bone marrow-derived mesenchymal stem cells. Intracellular expression levels of the neuronal early markers [3-III tu- bulin and microtubule-associated protein-2 were significantly increased, and apoptosis induced by oxygen and glucose deprivation was reduced in transfected cells. After miR-124-transfected bone marrow-derived mesenchymal stem cells were transplanted into the injured rat spinal cord, a large number of cells positive for the neuronal marker neurofilament-200 were observed in the transplanted region. The Basso-Beattie-Bresnahan locomotion scores showed that the motor function of the hind limb of rats with spinal cord injury was substantially improved. These re- sults suggest that miR-124 plays an important role in the differentiation of bone marrow-derived mesenchymal stem cells into neurons. Our findings should facilitate the development of novel strategies for enhancing the therapeutic efficacy of bone marrow-derived mesenchymal stem cell transplantation for spinal cord injury.
文摘In order to investigate the role played by platelet derived growth factor-BB (PDGF-BB) in the pathogenesis of pulmonary interstitial fibrosis in rats repeatedly infected with mycoplasma pneumoniae (MP), a rat MP infection model was developed by infecting rats with MP for 9 times during a period of 24 weeks with a technique of ultrasonic nebulizing inhalation. Then in situ hybridization was performed with PDGF-B chain cDNA probe and the results were quantitatively analyzed to measure the changes in PDGF-B chain mRNA expression in the lung tissue. The results showed that: (1) MP polymerase chain reaction (PCR) tests showed positive results in the bronchoalveolar lavage fluid (BALF ) from all of the MP-infected rats (n = 4) while they were all negative in BALF from the control animals (n = 4, P<0. 05) and in BALF from those rats both infected with MP and, at the same time, treated with erythromycin (n = 4, P<0. 05). Bacterial cultures of the bronchial and lung tissue were negative in all three groups. The observation under a transmission electron microscope indicated that the interalveo-lar septa were widened with increased amount of collagen in the MP-infected rats while there were no obvious abnormalities in the other two groups. (2) Strong positive expression of PDGF-B chain mRNA was found in the plasma of mono-cytes and macrophages located in the locally widened interalveolar septa and alveolar spaces in the lung tissue from the MP-infected animals with the integral optical densities being 37. 42 ±9. 05 (n = 4) which was significantly higher than the values of control group (0. 42 + 0. 08, n = 4, P<0. 01) and of the group with MP-infec-tion plus erythromycin treatment (1. 62 ± 0. 40, n = 4, P<0. 01). These results suggest that PDGF-BB may be involved in the process of the development of pulmonary interstitial fibrosis caused by the repeated MP-infection. It may be an important growth factor for mediating the roles of monocytes and macrophages to promote the aggregation and proliferation of fibroblasts which ca
文摘目的探讨通调针刺法联合芪蛭三七汤治疗脑卒中后运动障碍的效果及对血清脑源性神经营养因子(brain derived neurotrophic factor,BDNF)、神经肽Y(neuropeptide,NPY)水平的影响。方法选取2019年9月—2022年8月医院收治的102例脑卒中后运动障碍患者,依照随机数表法分为研究组(n=51例)和对照组(n=51例),对照组采用基础康复训练治疗,研究组另给予通调针刺法联合芪蛭三七汤治疗,比较两组患者中医症状评分,临床疗效,Fugl-Meyer运动功能量表(Fugl Meyer Motor Function Assessment,FMA)评分、Berg平衡量表(Berg Balance Scale,BBS)评分、改良Barthel指数、美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评分,血清BDNF、NPY水平及不良反应。结果治疗后,两组患者半身不遂、偏身障碍、意识模糊、口舌歪斜、气短乏力、手足肿胀评分均降低(P<0.05),且研究组半身不遂、偏身障碍、意识模糊、口舌歪斜、气短乏力、手足肿胀评分均低于对照组(P<0.05);研究组总有效率高于对照组,差异有统计学意义(P<0.05);治疗后,两组患者FMA评分和BBS评分均升高(P<0.05),且研究组更高(P<0.05);治疗后,两组患者改良Barthel指数均升高(P<0.05),且研究组更高(P<0.05),两组NIHSS评分均降低(P<0.05),且研究组更低,差异有统计学意义(P<0.05);治疗后,两组血清BDNF水平均升高(P<0.05),且研究组更高,差异有统计学意义(P<0.05),两组血清NPY水平均降低(P<0.05),且研究组更低,差异有统计学意义(P<0.05);不良反应发生率比较,差异无统计学意义(P>0.05)。结论通调针刺法联合芪蛭三七汤用于治疗脑卒中后运动障碍患者疗效确切,能够改善运动障碍及BDNF、NPY水平。
