Objective The apoptosis of vascular smooth muscle cells(VSMCs)influenced by abnormal cyclic stretch is crucial for vascular remodeling during hypertension.We explored that the causes of mechano-responsive lamin A/C ch...Objective The apoptosis of vascular smooth muscle cells(VSMCs)influenced by abnormal cyclic stretch is crucial for vascular remodeling during hypertension.We explored that the causes of mechano-responsive lamin A/C changingin aonormai cyclic stretcn and its roles in VSMC apoptosis.Methods and results Our previous vascular proteomics study revealed that LaminA/C is mechano-sensitive molecule.When VSMCs are subjected to cyclic stretch,the expression of LaminA/C is significantly changed which participates dysfunctions of VSMCs during hypertension.However,the molecular mechanism involved in regulation of LaminA/C expression and the role of LaminA/C in the VSMC apoptosis during cyclic stretch application are still unclear.In the present study,VSMCs were subjected to different amplitudes of cyclic steetch in vitro:5%cyclic stretch(physiological strain)or 15%cyclic stretch(pathological strain).The expression of 2 different selective cleavage isomers of LaminA/C,i.e.LaminA and LaminC,and the apoptosis of VSMCs were detected.The results showed that compared with 5%group,15%cyclic stretch significantly decreased the expression of LaminA and LaminC,and promoted the apoptosis of VSMCs.Using specific small interfering RNA(siRNA)transfection which targets on LMNA the encoding gene of LaminA/C,the expression of LaminA and LaminC in VSMCs was significantly decreased,and the apoptosis was significantly increased.In order to study the molecular mechanism involved in cyclic stretch regulating the expression of LaminA/C,we focused on the microRNA(miR).Bioinformatics analysis showed that the 3’untranslated region(3’UTR)of LMNA has two potential binding sites to miR-124-3p.Double luciferase reported system revealed that both sites have binding abilities to miR-124-3p.Under static condition,miR-124-3p inhibitor significantly up-regulated the expression levels of LaminA and LaminC,while the miR-124-3p mimics significantly down-regulated them.RT-PCR results showed that 15%cyclic stretch significantly up-regulated the expression of miR-124-3p compared with 5%cyclic stretch.Furthermore,in order to study the role of changeed LaminA/C in VSMC apoptosis,LMNA-specific siRNA was transfected to repress the expression of LaminA/C in VSMCs,and Protein/DNA microarray was used to detecte the activity of transcription factors.The transcription factors whose activity were changed significantly(increase or decrease more than 2 times)were analyzed by cluster analysis and ingenurity pathway analysis(IPA).Six transcription factors associated with apoptosis were screened,in which TP53 was activated by the specific siRNA transfection and the other 5 were inavtived,including TP53,CREB1,MYC,STAT1/5/6 and JUN.Using abdominal aorta coarctation hypertensive model,the change of miR-124-3p in VSMCs was explored in vivo.A marked increase of miR-124-3p in thoracic aorta was revealed compared with the sham-operated controls,and in situ FISH revealed that this increase was mainly in the VSMCs.Conclusions The present study suggest that abnormally increased cyclic stretch(15%)up-regulates the expression of miR-124-3p in VSMCs,which subsequently targets on the 3’UTR of LMNA and decreases the expression of nuclear envelope protein LaminA/C;the repressed LaminA/C may play an important role in the apoptosis of VSMCs by regulating the activity of virious transcription factors,such as TP53,CREB1,MYC,STAT1/5/6 and JUN.The present study may provide a new insight into understanding the molecular mechanisms of vascular remodeling.展开更多
Objective:To study the therapeutic effect of Shaoyao Jiawei Gancao Decoction(芍药加味甘草汤)with acupoint application on chronic lumbar muscle strain and the recovery of lumbar strength.Methods:From August 2018 to Aug...Objective:To study the therapeutic effect of Shaoyao Jiawei Gancao Decoction(芍药加味甘草汤)with acupoint application on chronic lumbar muscle strain and the recovery of lumbar strength.Methods:From August 2018 to August 2019,100 patients with chronic lumbar muscle strain admitted to our hospital were selected and randomly divided into an acupoint application group and a combined group of 50 cases each.The acupoint application group was treated by acupoint application,and the combined group was treated with Shaoyao Jiawei Gancao Decoction(芍药加味甘草汤)based on acupoint application.The indexes scores,VAS scores,ADL scores,ODI scores,lumbar endurance,TCM syndrome scores and the treatment effects of the two groups before and after treatment were statistically analyzed,and TNF-αand TXB2 levels were detected.Results:After treatment,the scores of indexes,VAS,ODI,TCM syndrome,TNF-αand TXB2 in the combined group were lower than those in the acupoint application group,and the ADL score,lumbar endurance and treatment efficiency were higher than those in the acupoint application group,with a statistical difference(P<0.05).Conclusion:Shaoyao Jiawei Gancao Decoction(芍药加味甘草汤)with acupoint application can effectively reduce pain,improve lumbar function,restore lumbar strength,effectively relieve inflammation,with significant effects.展开更多
Recently,researchers have concentrated on studying ionic polymer metal composite(IPMC)artificial muscle,which has numerous advantages including a relatively large strain under low input voltage,flexibility,high respon...Recently,researchers have concentrated on studying ionic polymer metal composite(IPMC)artificial muscle,which has numerous advantages including a relatively large strain under low input voltage,flexibility,high response,low noise,light weight,and high driving energy density.This paper reports recent developments in IPMC artificial muscle,including improvement methods,modeling,and applications.Different types of IPMCs are described,along with various methods for overcoming some shortcomings,including improvement of Nafion matrix membranes,surface preparation of Nafion membranes,the choice of high-performing electrodes,and new electro-active polymers for enhancing the properties of IPMCs.IPMC models are also reviewed,providing theoretical guidance for studying the performance and applications of IPMCs.Successful applications such as bio-inspired robots,opto-mechatronic systems,and medical engineering are discussed.展开更多
目的探究急性大面积脑梗死患者开展开颅去大骨瓣减压联合康复治疗的临床效果。方法选择2021年2月—2023年2月高密市人民医院收治的46例急性大面积脑梗死患者为研究对象,按随机数表法分为研究组和对照组,各23例。所有患者全部开展开颅去...目的探究急性大面积脑梗死患者开展开颅去大骨瓣减压联合康复治疗的临床效果。方法选择2021年2月—2023年2月高密市人民医院收治的46例急性大面积脑梗死患者为研究对象,按随机数表法分为研究组和对照组,各23例。所有患者全部开展开颅去大骨瓣减压术治疗,对照组予以基础康复治疗,研究组予以综合康复治疗。比较两组患肢关节改良Ashworth分级(Modified Ashworth Scale,MAS)、美国国立卫生研究院卒中量表(National Institute of Health Stroke Scale,NIHSS)、Fugl-Meyer肢体运动功能量表(Fugl-Meyer Assessment,FMA)、Barthel指数(Barthel Index,BI)影响。结果治疗前,两组MAS评分、NIHSS评分、FMA评分、BI指数比较,差异无统计学意义(P均>0.05)。治疗后,研究组NIHSS评分(15.26±2.21)分、MAS评分(1.18±0.42)分,低于对照组的(17.21±2.70)分、(1.96±0.37)分,差异有统计学意义(t=2.680、6.683,P均<0.05)。治疗后,研究组FMA评分(59.90±8.23)分、BI指数(81.96±10.59)分,高于对照组的(55.50±3.69)分、(72.25±13.36)分,差异有统计学意义(t=2.340、2.708,P均<0.05)。结论急性大面积脑梗死患者开展开颅去大骨瓣减压联合综合康复治疗的效果显著,可改善神经受损情况,提升肢体功能、自理能力。展开更多
基金supported by grants from the National Natural Science Foundation of China( 11572199 and 11625209)
文摘Objective The apoptosis of vascular smooth muscle cells(VSMCs)influenced by abnormal cyclic stretch is crucial for vascular remodeling during hypertension.We explored that the causes of mechano-responsive lamin A/C changingin aonormai cyclic stretcn and its roles in VSMC apoptosis.Methods and results Our previous vascular proteomics study revealed that LaminA/C is mechano-sensitive molecule.When VSMCs are subjected to cyclic stretch,the expression of LaminA/C is significantly changed which participates dysfunctions of VSMCs during hypertension.However,the molecular mechanism involved in regulation of LaminA/C expression and the role of LaminA/C in the VSMC apoptosis during cyclic stretch application are still unclear.In the present study,VSMCs were subjected to different amplitudes of cyclic steetch in vitro:5%cyclic stretch(physiological strain)or 15%cyclic stretch(pathological strain).The expression of 2 different selective cleavage isomers of LaminA/C,i.e.LaminA and LaminC,and the apoptosis of VSMCs were detected.The results showed that compared with 5%group,15%cyclic stretch significantly decreased the expression of LaminA and LaminC,and promoted the apoptosis of VSMCs.Using specific small interfering RNA(siRNA)transfection which targets on LMNA the encoding gene of LaminA/C,the expression of LaminA and LaminC in VSMCs was significantly decreased,and the apoptosis was significantly increased.In order to study the molecular mechanism involved in cyclic stretch regulating the expression of LaminA/C,we focused on the microRNA(miR).Bioinformatics analysis showed that the 3’untranslated region(3’UTR)of LMNA has two potential binding sites to miR-124-3p.Double luciferase reported system revealed that both sites have binding abilities to miR-124-3p.Under static condition,miR-124-3p inhibitor significantly up-regulated the expression levels of LaminA and LaminC,while the miR-124-3p mimics significantly down-regulated them.RT-PCR results showed that 15%cyclic stretch significantly up-regulated the expression of miR-124-3p compared with 5%cyclic stretch.Furthermore,in order to study the role of changeed LaminA/C in VSMC apoptosis,LMNA-specific siRNA was transfected to repress the expression of LaminA/C in VSMCs,and Protein/DNA microarray was used to detecte the activity of transcription factors.The transcription factors whose activity were changed significantly(increase or decrease more than 2 times)were analyzed by cluster analysis and ingenurity pathway analysis(IPA).Six transcription factors associated with apoptosis were screened,in which TP53 was activated by the specific siRNA transfection and the other 5 were inavtived,including TP53,CREB1,MYC,STAT1/5/6 and JUN.Using abdominal aorta coarctation hypertensive model,the change of miR-124-3p in VSMCs was explored in vivo.A marked increase of miR-124-3p in thoracic aorta was revealed compared with the sham-operated controls,and in situ FISH revealed that this increase was mainly in the VSMCs.Conclusions The present study suggest that abnormally increased cyclic stretch(15%)up-regulates the expression of miR-124-3p in VSMCs,which subsequently targets on the 3’UTR of LMNA and decreases the expression of nuclear envelope protein LaminA/C;the repressed LaminA/C may play an important role in the apoptosis of VSMCs by regulating the activity of virious transcription factors,such as TP53,CREB1,MYC,STAT1/5/6 and JUN.The present study may provide a new insight into understanding the molecular mechanisms of vascular remodeling.
基金2018 Hebei Medical Research Project Plan(20181606)。
文摘Objective:To study the therapeutic effect of Shaoyao Jiawei Gancao Decoction(芍药加味甘草汤)with acupoint application on chronic lumbar muscle strain and the recovery of lumbar strength.Methods:From August 2018 to August 2019,100 patients with chronic lumbar muscle strain admitted to our hospital were selected and randomly divided into an acupoint application group and a combined group of 50 cases each.The acupoint application group was treated by acupoint application,and the combined group was treated with Shaoyao Jiawei Gancao Decoction(芍药加味甘草汤)based on acupoint application.The indexes scores,VAS scores,ADL scores,ODI scores,lumbar endurance,TCM syndrome scores and the treatment effects of the two groups before and after treatment were statistically analyzed,and TNF-αand TXB2 levels were detected.Results:After treatment,the scores of indexes,VAS,ODI,TCM syndrome,TNF-αand TXB2 in the combined group were lower than those in the acupoint application group,and the ADL score,lumbar endurance and treatment efficiency were higher than those in the acupoint application group,with a statistical difference(P<0.05).Conclusion:Shaoyao Jiawei Gancao Decoction(芍药加味甘草汤)with acupoint application can effectively reduce pain,improve lumbar function,restore lumbar strength,effectively relieve inflammation,with significant effects.
基金financial supportfrom the National Natural Science Foundation of China(Grant Nos.51605220,U1637101)the Jiangsu Province NaturalScience Foundation(GrantNo.BK20160793)。
文摘Recently,researchers have concentrated on studying ionic polymer metal composite(IPMC)artificial muscle,which has numerous advantages including a relatively large strain under low input voltage,flexibility,high response,low noise,light weight,and high driving energy density.This paper reports recent developments in IPMC artificial muscle,including improvement methods,modeling,and applications.Different types of IPMCs are described,along with various methods for overcoming some shortcomings,including improvement of Nafion matrix membranes,surface preparation of Nafion membranes,the choice of high-performing electrodes,and new electro-active polymers for enhancing the properties of IPMCs.IPMC models are also reviewed,providing theoretical guidance for studying the performance and applications of IPMCs.Successful applications such as bio-inspired robots,opto-mechatronic systems,and medical engineering are discussed.
文摘目的探究急性大面积脑梗死患者开展开颅去大骨瓣减压联合康复治疗的临床效果。方法选择2021年2月—2023年2月高密市人民医院收治的46例急性大面积脑梗死患者为研究对象,按随机数表法分为研究组和对照组,各23例。所有患者全部开展开颅去大骨瓣减压术治疗,对照组予以基础康复治疗,研究组予以综合康复治疗。比较两组患肢关节改良Ashworth分级(Modified Ashworth Scale,MAS)、美国国立卫生研究院卒中量表(National Institute of Health Stroke Scale,NIHSS)、Fugl-Meyer肢体运动功能量表(Fugl-Meyer Assessment,FMA)、Barthel指数(Barthel Index,BI)影响。结果治疗前,两组MAS评分、NIHSS评分、FMA评分、BI指数比较,差异无统计学意义(P均>0.05)。治疗后,研究组NIHSS评分(15.26±2.21)分、MAS评分(1.18±0.42)分,低于对照组的(17.21±2.70)分、(1.96±0.37)分,差异有统计学意义(t=2.680、6.683,P均<0.05)。治疗后,研究组FMA评分(59.90±8.23)分、BI指数(81.96±10.59)分,高于对照组的(55.50±3.69)分、(72.25±13.36)分,差异有统计学意义(t=2.340、2.708,P均<0.05)。结论急性大面积脑梗死患者开展开颅去大骨瓣减压联合综合康复治疗的效果显著,可改善神经受损情况,提升肢体功能、自理能力。
