Background The perioperative aortic dissection （AD） rupture is a severe event after endovascular stent graft placement for treatment of type B AD. However, this life-threatening complication has not undergone system...Background The perioperative aortic dissection （AD） rupture is a severe event after endovascular stent graft placement for treatment of type B AD. However, this life-threatening complication has not undergone systematic investigation. The aim of the study is to discuss the reasons clAD rupture after the procedure. Methods The medical record data of 563 Stanford type B AD patients who received thoracic endovascular repair from 2004 to December 2011 at our institution were collected and analyzed. Double entry and consistency checking were performed with Epidata software. Results Twelve patients died during the perioperation after thoracic endovascular repair, with an incidence of 2.1%, 66.6% were caused by aortic rupture and half of the aortic rupture deaths were caused by retrograde type A AD. In our study, 74% of the non-rupture surviving patients had the free-flow bare spring proximal stent implanted, compared with 100% of the aortic rupture patients （74% vs. 100%, P=-0.213）. The aortic rupture patients are more likely to have ascending aortic diameters 〉4 cm （62.5% vs. 9.0%, P=0.032）, involvement the aortic arch concavity （62% vs. 27%, P=-0.041） and have had multiple stents placed （P=0.039）. Conclusions Thoracic AD endovascular repair is a safe and effective treatment option for AD with relative low in-hospital mortality. AD rupture may be more common in arch stent-graft patients with an ascending aortic diameter 〉4 cm and with severe dissection that needs multi-stent placement. Attention should be paid to a proximal bare spring stent that has a higher probability of inducing an AD rupture. Post balloon dilation should be performed with serious caution, particularly for the migration during dilation.展开更多
Background Decreasing the intracranial pressure has been advocated as one of the major protective strategies to prevent spinal cord ischemia after endovascular aortic repair. However, the actual changes of cerebrospin...Background Decreasing the intracranial pressure has been advocated as one of the major protective strategies to prevent spinal cord ischemia after endovascular aortic repair. However, the actual changes of cerebrospinal fluid （CSF） pressure and its relation with spinal cord ischemia have been poorly understood. We performed CSF pressure measurements and provisional CSF withdrawal after thoracic endovascular aortic repair, and compared the changes of CSF pressure in high risk patients and in patients with new onset paraplegia and paraparesis.展开更多
Background Aortic dissection(AD)is one of the serious diseases that threaten human life. Endovascular aortic ancurysm repair(EVAR),as a first-line treatment of type B AD,has the advantages of short operation time,litt...Background Aortic dissection(AD)is one of the serious diseases that threaten human life. Endovascular aortic ancurysm repair(EVAR),as a first-line treatment of type B AD,has the advantages of short operation time,little trauma,and rapid recovery. Previous studies have paid more attention to the clinical prognosis and imaging changes after endovascular repair of AD,with few focus on the quality of life after operation. The prevalence of coronary heart disease(CHD)has dramatically risen during the past few decades. Percutaneous coronary intervention(PCI)is considered one of the primary approaches for CHD treatment. Anxiety and depression are commonly associated with coronary heart disease(CHD). Psychological problems may be related with occurrence of unhealthy lifestyles and non-adherence to treatment. This study was to explore psychological characteristics and the quality of life and their influencing factors after interventional therapy of AD and CHD.Methods Respectively 100 AD and 100 CHD patients undergoing interventional therapy were investigated with SF-36,self-rating anxiety scale(SAS),self-rating depression scale(SDS)and social support scale. The values of SF-36,SAS,SDS between the AD and CHD group were analyzed. The influencing factors of quality of life were evaluated. Results There was no significant difference in SF-36 score between AD patients after endovascular repair and CHD patients after percutaneous coronary intervention. However,the scores in the dimensions of role-physical(54.00±41.54 vs. 65.25±34.43,P=0.038)and social functioning(74.00±20.69 vs.81.00±20.35,P=0.020)were lower in AD patients than in CHD patients. Multiple linear regression analysis showed that age,occupational status,postoperative time,anxiety,depression,and social support were the influencing factors of life quality in aortic dissection patients. Conclusion Compared with CHD patients receiving percutaneous coronary intervention,quality of life in AD patients after endovascular repair should be paid attention to. It is necess展开更多
Background Aortic coarctation(CoA)is a common congenital cardiovascular defect. Until now,there is no unified conclusions about the therapeutic options of the native aortic coarctation(CoA)in adolescents and adults. M...Background Aortic coarctation(CoA)is a common congenital cardiovascular defect. Until now,there is no unified conclusions about the therapeutic options of the native aortic coarctation(CoA)in adolescents and adults. Methods From May 2010 to April 2018,consecutive 23 patients(median age 25 years,range 15-57 years)with native CoA underwent endovascular repair by applying covered Cheatham platinum(CP)stent in our center. Related variables were retrospectively collected and analyzed. Results Ten cases were complicated with other congenital heart diseases. Hypertension was confirmed in 21(91.3%)patients. In these patients,thirteen cases(61.9%)had a normal blood pressure without drug treatment during follow-up.The systolic right arm blood pressure significantly decreased from a mean of 150.7±6.4 mmHg pre-operation to 128.0±12.5 mmHg discharge(P<0.001),and the diastolic pressure decreased from 82.0±10.0 to 73.1±6.8 mmHg(P<0.001). The diameter of the coarcted segment increased from 5.0±2.3 to 16.9±2.3 mm(P<0.001). The peak systolic gradient significantly decreased from 64.9±20.9 to 7.1 ±6.1 mm Hg(P<0.001). The median follow-up was 30 months(range 1 months to 7.9 years). Complications were found in 4 people within one month:1 suspected cardiovascular-related death,1 new aortic dissection,1 splenic infarction,and 1 path-related arterial occlusion.Conclusions Our limited experience demonstrated that stent implantation is a reliable technique for the management of native aortic coarctation in adolescents and adults. Our intermediate-term results seem encouraging,however,the early complications should be considered. A larger series of cases with a longer follow-up is needed to substantiate these results.展开更多
The coloration and hatchability of insect eggs can affect individual and population survival.However,few genetic loci have been documented to affect both traits,and the genes involved in regulating these two traits ar...The coloration and hatchability of insect eggs can affect individual and population survival.However,few genetic loci have been documented to affect both traits,and the genes involved in regulating these two traits are unclear.The silkworm recessive mutant re^(l)shows both red egg color and embryo mortality.We studied the molecular basis of the re^(l)phenotype formation.Through genetic analysis,gene screening and sequencing,we found that two closely linked genes,BGIBMGA003497(Bmre)and BGIBMG4003697(Bm-Semala),control egg color and embryo mortality,respectively.Six base pairs of the Bm-re gene are deleted in its open reading frame,and BmSemala is expressed at abnormally low levels in mutant re^(l).BmSemala gene function verification was performed using RNA interference and clustered randomly interspersed palindromic repeats(CRISPR)/CRISPR-associate protein 9.Deficiency of the BmSemala gene can cause the death of silkworm embryos.This study revealed the molecular basis of silkworm re^(l)mutant formation and indicated that the Semala gene is essential for insect embryo development.展开更多
Based on the optimization of dye-sensitized solar cell (DSC) photoelectrodes pretreated with different methods such as electrodeposition,spin-coating and TiCl_(4) pretreatment,theoretical calculations are carried out ...Based on the optimization of dye-sensitized solar cell (DSC) photoelectrodes pretreated with different methods such as electrodeposition,spin-coating and TiCl_(4) pretreatment,theoretical calculations are carried out to interpret the internal electric mechanism.The numerical values,including the series resistance R_(s) and the shunt resistance R_(sh) corresponding to the equivalent circuit model,are well evaluated and confirm that the DSC has good performance with a high R_(sh) and a low R_(s) due to good electrical contact and a low charge recombination after the different modifications.The Ⅰ-Ⅴ curves are fifted in the case without series resistance,and account for the role of R_(s) in the output characteristics.It is found that when R_(s) tends to the infinitesimal,the short-circuit current Isc,the open-circuit voltage V_(oc) and the fill factor can be improved by almost 0.8-1.4,2.9 and 2.1-6.8%,respectively.展开更多
文摘Background The perioperative aortic dissection （AD） rupture is a severe event after endovascular stent graft placement for treatment of type B AD. However, this life-threatening complication has not undergone systematic investigation. The aim of the study is to discuss the reasons clAD rupture after the procedure. Methods The medical record data of 563 Stanford type B AD patients who received thoracic endovascular repair from 2004 to December 2011 at our institution were collected and analyzed. Double entry and consistency checking were performed with Epidata software. Results Twelve patients died during the perioperation after thoracic endovascular repair, with an incidence of 2.1%, 66.6% were caused by aortic rupture and half of the aortic rupture deaths were caused by retrograde type A AD. In our study, 74% of the non-rupture surviving patients had the free-flow bare spring proximal stent implanted, compared with 100% of the aortic rupture patients （74% vs. 100%, P=-0.213）. The aortic rupture patients are more likely to have ascending aortic diameters 〉4 cm （62.5% vs. 9.0%, P=0.032）, involvement the aortic arch concavity （62% vs. 27%, P=-0.041） and have had multiple stents placed （P=0.039）. Conclusions Thoracic AD endovascular repair is a safe and effective treatment option for AD with relative low in-hospital mortality. AD rupture may be more common in arch stent-graft patients with an ascending aortic diameter 〉4 cm and with severe dissection that needs multi-stent placement. Attention should be paid to a proximal bare spring stent that has a higher probability of inducing an AD rupture. Post balloon dilation should be performed with serious caution, particularly for the migration during dilation.
文摘Background Decreasing the intracranial pressure has been advocated as one of the major protective strategies to prevent spinal cord ischemia after endovascular aortic repair. However, the actual changes of cerebrospinal fluid （CSF） pressure and its relation with spinal cord ischemia have been poorly understood. We performed CSF pressure measurements and provisional CSF withdrawal after thoracic endovascular aortic repair, and compared the changes of CSF pressure in high risk patients and in patients with new onset paraplegia and paraparesis.
基金supported by Guangdong Medical Research Fund Project(No.A2016140)
文摘Background Aortic dissection(AD)is one of the serious diseases that threaten human life. Endovascular aortic ancurysm repair(EVAR),as a first-line treatment of type B AD,has the advantages of short operation time,little trauma,and rapid recovery. Previous studies have paid more attention to the clinical prognosis and imaging changes after endovascular repair of AD,with few focus on the quality of life after operation. The prevalence of coronary heart disease(CHD)has dramatically risen during the past few decades. Percutaneous coronary intervention(PCI)is considered one of the primary approaches for CHD treatment. Anxiety and depression are commonly associated with coronary heart disease(CHD). Psychological problems may be related with occurrence of unhealthy lifestyles and non-adherence to treatment. This study was to explore psychological characteristics and the quality of life and their influencing factors after interventional therapy of AD and CHD.Methods Respectively 100 AD and 100 CHD patients undergoing interventional therapy were investigated with SF-36,self-rating anxiety scale(SAS),self-rating depression scale(SDS)and social support scale. The values of SF-36,SAS,SDS between the AD and CHD group were analyzed. The influencing factors of quality of life were evaluated. Results There was no significant difference in SF-36 score between AD patients after endovascular repair and CHD patients after percutaneous coronary intervention. However,the scores in the dimensions of role-physical(54.00±41.54 vs. 65.25±34.43,P=0.038)and social functioning(74.00±20.69 vs.81.00±20.35,P=0.020)were lower in AD patients than in CHD patients. Multiple linear regression analysis showed that age,occupational status,postoperative time,anxiety,depression,and social support were the influencing factors of life quality in aortic dissection patients. Conclusion Compared with CHD patients receiving percutaneous coronary intervention,quality of life in AD patients after endovascular repair should be paid attention to. It is necess
基金High-level Hospital Construction Project,Guangdong,China(No.DFJH201807)。
文摘Background Aortic coarctation(CoA)is a common congenital cardiovascular defect. Until now,there is no unified conclusions about the therapeutic options of the native aortic coarctation(CoA)in adolescents and adults. Methods From May 2010 to April 2018,consecutive 23 patients(median age 25 years,range 15-57 years)with native CoA underwent endovascular repair by applying covered Cheatham platinum(CP)stent in our center. Related variables were retrospectively collected and analyzed. Results Ten cases were complicated with other congenital heart diseases. Hypertension was confirmed in 21(91.3%)patients. In these patients,thirteen cases(61.9%)had a normal blood pressure without drug treatment during follow-up.The systolic right arm blood pressure significantly decreased from a mean of 150.7±6.4 mmHg pre-operation to 128.0±12.5 mmHg discharge(P<0.001),and the diastolic pressure decreased from 82.0±10.0 to 73.1±6.8 mmHg(P<0.001). The diameter of the coarcted segment increased from 5.0±2.3 to 16.9±2.3 mm(P<0.001). The peak systolic gradient significantly decreased from 64.9±20.9 to 7.1 ±6.1 mm Hg(P<0.001). The median follow-up was 30 months(range 1 months to 7.9 years). Complications were found in 4 people within one month:1 suspected cardiovascular-related death,1 new aortic dissection,1 splenic infarction,and 1 path-related arterial occlusion.Conclusions Our limited experience demonstrated that stent implantation is a reliable technique for the management of native aortic coarctation in adolescents and adults. Our intermediate-term results seem encouraging,however,the early complications should be considered. A larger series of cases with a longer follow-up is needed to substantiate these results.
基金the National Natural Sci-ence Foundation of China(No.31830094)the Hi-Tech Research and Development 863 Program of China Grant(No.2013AA 102507)funds from the China Agri-culture Research System(No.CARS-18-ZJ0102).
文摘The coloration and hatchability of insect eggs can affect individual and population survival.However,few genetic loci have been documented to affect both traits,and the genes involved in regulating these two traits are unclear.The silkworm recessive mutant re^(l)shows both red egg color and embryo mortality.We studied the molecular basis of the re^(l)phenotype formation.Through genetic analysis,gene screening and sequencing,we found that two closely linked genes,BGIBMGA003497(Bmre)and BGIBMG4003697(Bm-Semala),control egg color and embryo mortality,respectively.Six base pairs of the Bm-re gene are deleted in its open reading frame,and BmSemala is expressed at abnormally low levels in mutant re^(l).BmSemala gene function verification was performed using RNA interference and clustered randomly interspersed palindromic repeats(CRISPR)/CRISPR-associate protein 9.Deficiency of the BmSemala gene can cause the death of silkworm embryos.This study revealed the molecular basis of silkworm re^(l)mutant formation and indicated that the Semala gene is essential for insect embryo development.
基金Supported by the National Basic Research Program of China under Grant No 2011CBA00700the National Natural Science Foundation of China under Grant Nos 21173228 and 11104150+1 种基金the Foundation of Key Laboratory of Novel Thin Film Solar Cells,Chinese Academy of Sciences under Grant No KF201106the Major Program of Natural Science Basic Research of Institution of Higher Education of Jiangsu Province under Grant Nos 08KJA510002 and 10KJA140043.
文摘Based on the optimization of dye-sensitized solar cell (DSC) photoelectrodes pretreated with different methods such as electrodeposition,spin-coating and TiCl_(4) pretreatment,theoretical calculations are carried out to interpret the internal electric mechanism.The numerical values,including the series resistance R_(s) and the shunt resistance R_(sh) corresponding to the equivalent circuit model,are well evaluated and confirm that the DSC has good performance with a high R_(sh) and a low R_(s) due to good electrical contact and a low charge recombination after the different modifications.The Ⅰ-Ⅴ curves are fifted in the case without series resistance,and account for the role of R_(s) in the output characteristics.It is found that when R_(s) tends to the infinitesimal,the short-circuit current Isc,the open-circuit voltage V_(oc) and the fill factor can be improved by almost 0.8-1.4,2.9 and 2.1-6.8%,respectively.
