BACKGROUND The impact of type 1 diabetes(T1D)on inflammatory bowel disease(IBD)remains unclear.AIM To analyze the causal relationship between T1D and IBD using Mendelian randomization(MR).METHODS Single nucleotide pol...BACKGROUND The impact of type 1 diabetes(T1D)on inflammatory bowel disease(IBD)remains unclear.AIM To analyze the causal relationship between T1D and IBD using Mendelian randomization(MR).METHODS Single nucleotide polymorphisms were sourced from FinnGen for T1D,IBD,ulcerative colitis(UC)and Crohn’s disease(CD).Inverse variance-weighted,MREgger,and weighted median tests were used to assess exposure-outcome causality.The MR-Egger intercept was used to assess horizontal pleiotropy.Cochran’s Q and leave-one-out method were used to analyze heterogeneity and sensitivity,respectively.RESULTS Our MR analysis indicated that T1D was associated with a reduced risk of IBD[odds ratio(OR):0.959;95%confidence interval(CI):0.938-0.980;P<0.001]and UC(OR:0.960;95%CI:0.929-0.992;P=0.015),with no significant association observed in terms of CD risk(OR:0.966;95%CI:0.913-1.022;P=0.227).The MR-Egger intercept showed no horizontal pleiotropy(P>0.05).Cochran’s Q and leave-one-out sensitivity analyses showed that the results were not heterogeneous(P>0.05)and were robust.CONCLUSION This MR analysis suggests that T1D serves as a potential protective factor against IBD and UC but is independent of CD.展开更多
BACKGROUND The benefits and risks of Xileisan(XLS)in the treatment of ulcerative colitis(UC)remain unclear.AIM The present study aimed to evaluate the efficacy and safety of the combination of XLS and mesalazine when ...BACKGROUND The benefits and risks of Xileisan(XLS)in the treatment of ulcerative colitis(UC)remain unclear.AIM The present study aimed to evaluate the efficacy and safety of the combination of XLS and mesalazine when treating UC.METHODS We searched eight databases for clinical trials evaluating the combination of XLS and mesalazine in the treatment of UC,up to January 2024.Meta-analysis and trial sequential analysis(TSA)were performed using Revman 5.3 and TSA 0.9.5.10 beta,respectively.RESULTS The present study included 13 clinical studies involving 990 patients,of which 501 patients received XLS combined with mesalazine while 489 patients received mesalazine alone.The meta-analysis showed that,in terms of efficacy,the combination of XLS and mesalazine significantly improved the clinical efficacy rate by 22%[risk ratio(RR)=1.22;95%CI:1.15–1.28;P<0.00001]and mucosal improvement rate by 25%(RR=1.25;95%CI:1.12–1.39;P=0.0001),while significantly reducing the duration of abdominal pain by 2.25 days[mean difference(MD)=-2.25;95%CI:-3.35 to-1.14;P<0.0001],diarrhea by 2.06 days(MD=-2.06;95%CI:-3.92 to-0.20;P=0.03),hematochezia by 2.32 days(MD=-2.32;95%CI:-4.02 to-0.62;P=0.008),tumor necrosis factor alpha by 16.25 ng/mL(MD=-16.25;95%CI:-20.48 to-12.01;P<0.00001),and interleukin-6 by 14.14 ng/mL(MD=-14.14;95%CI:-24.89 to-3.39;P=0.01).The TSA indicated conclusiveness in the meta-analysis of the efficacy endpoints.In terms of safety,the meta-analysis revealed that the combination of XLS and mesalazine did not increase the occurrence of total and gastrointestinal adverse events,abdominal distension,and erythema(P>0.05).The TSA showed non conclusive findings in the meta-analysis of the safety endpoints.Harbord’s test showed no publication bias(P=0.734).CONCLUSION Treatment with XLS alleviated the clinical symptoms,intestinal mucosal injury,and inflammatory response in patients with UC,while demonstrating good safety.展开更多
BACKGROUND The effects of viral hepatitis(VH)on type 2 diabetes(T2D)remain controversial.AIM To analyze the causal correlation between different types of VH and T2D using Mendelian randomization(MR).METHODS Single nuc...BACKGROUND The effects of viral hepatitis(VH)on type 2 diabetes(T2D)remain controversial.AIM To analyze the causal correlation between different types of VH and T2D using Mendelian randomization(MR).METHODS Single nucleotide polymorphisms of VH,chronic hepatitis B(CHB),chronic hepatitis C(CHC)and T2D were obtained from the BioBank Japan Project,European Bioinformatics Institute,and FinnGen.Inverse variance weighted,MREgger,and weighted median were used to test exposure-outcome associations.The MR-Egger intercept analysis and Cochran’s Q test were used to assess horizontal pleiotropy and heterogeneity,respectively.Leave-one-out sensitivity analysis was used to evaluate the robustness of the MR analysis results.RESULTS The MR analysis showed no significant causal relationship between VH and T2D in Europeans[odds ratio(OR)=1.028;95%confidence interval(CI):0.995-1.062,P=0.101].There was a negative causal association between CHB and T2D among East Asians(OR=0.949;95%CI:0.931-0.968,P<0.001),while there was no significant causal association between CHC and T2D among East Asians(OR=1.018;95%CI:0.959-1.081,P=0.551).Intercept analysis and Cochran’s Q test showed no horizontal pleiotropy or heterogeneity(P>0.05).Sensitivity analysis showed that the results were robust.CONCLUSION Among East Asians,CHB is associated with a reduced T2D risk,but this association is limited by HBV load and cirrhosis.Although VH among Europeans and CHC among East Asians are not associated with the risk of T2D,focusing on blood glucose in patients with CHC is still relevant for the early detection of T2D induced by CHCmediated pathways of hepatic steatosis,liver fibrosis,and cirrhosis.展开更多
BACKGROUND As an emerging potential risk factor for gastric cancer,autoimmune gastritis(AIG)has garnered increasing attention from researchers.AIM To analyze the research overview and popular topics in the field of AI...BACKGROUND As an emerging potential risk factor for gastric cancer,autoimmune gastritis(AIG)has garnered increasing attention from researchers.AIM To analyze the research overview and popular topics in the field of AIG using bibliometrics.METHODS Relevant publications on AIG in the Web of Science Core Collection were collated,and data visualization and analysis of the number of publications,countries,institutions,journals,authors,keywords,and citations were performed using software such as VOSviewer,CiteSpace,and Scimago Graphic.RESULTS In total,316 relevant articles were included in the analysis.From 2015 to 2022,the number of publications increased annually.The countries,institutions,authors,and journals with the highest number of publications in this field were Italy,Monash University,Toh BH,and Internal Medicine.The main keywords used in this field of research were pathogenesis,Helicobacter pylori,autoantibody,parietal cell antibody,atrophic gastritis,classification,diagnosis,autoimmune disease,risk,cancer,gastric cancer,vitamin B12 deficiency,and pernicious anemia.The following directions may be popular for future research:(1)The role of Helicobacter pylori in the pathogenesis of AIG;(2)diagnostic criteria for AIG and reference values for serum antibodies;(3)comorbidity mechanisms between AIG and other autoimmune diseases;(4)specific risks of AIG complicating gastric and other cancers;and(5)the role of vitamin B12 supplementation in patients with early-stage AIG.CONCLUSION This bibliometric analysis reported on popular topics and emerging trends in AIG,with diagnosis and prognosis being research hotspots in this field.展开更多
Inflammation plays an important role in the pathological process of ischemic stroke,and systemic inflammation affects patient prognosis.As resident immune cells in the brain,microglia are significantly involved in imm...Inflammation plays an important role in the pathological process of ischemic stroke,and systemic inflammation affects patient prognosis.As resident immune cells in the brain,microglia are significantly involved in immune defense and tissue repair under various pathological conditions,including cerebral ischemia.Although the differentiation of M1 and M2 microglia is certainly oversimplified,changing the activation state of microglia appears to be an intriguing therapeutic strategy for cerebral ischemia.Recent evidence indicates that both mesenchymal stem cells(MSCs)and MSC-derived extracellular vesicles(EVs)regulate inflammation and modify tissue repair under preclinical stroke conditions.However,the precise mechanisms of these signaling pathways,especially in the context of the mutual interaction between MSCs or MSC-derived EVs and resident microglia,have not been sufficiently unveiled.Hence,this review summarizes the state-ofthe-art knowledge on MSC-and MSC-EV-mediated regulation of microglial activity under ischemic stroke conditions with respect to various signaling pathways,including cytokines,neurotrophic factors,transcription factors,and microRNAs.展开更多
BACKGROUND Surgical treatment for large carotid body tumor (CBT),particularly the Shamblin III type,is challenging and rarely reported.CASE SUMMARY In July 2014,a 63-year-old woman presented to our hospital with a lar...BACKGROUND Surgical treatment for large carotid body tumor (CBT),particularly the Shamblin III type,is challenging and rarely reported.CASE SUMMARY In July 2014,a 63-year-old woman presented to our hospital with a large CBT (130 mm × 60 mm × 70 mm).The lesion was hypervascular,spanned from the first to the seventh cervical vertebra,and adhered to the right common carotid artery (CCA),internal carotid artery (ICA) and external carotid artery (ECA).The resection was carried out in a hybrid operating theatre.First,we used Onyx gel to embolize the feeding artery.An ICA balloon was used to prevent gel entry into the ICA.After shrinkage and hardening of the CBT,we quickly resected the CBT as well as a part of the ECA that adhered to the CBT.A vascular shunt was inserted between CCA and ICA,and the part where the ICA was cut off from the CCA was directly sutured.A follow-up at four years later showed no neurological damage.CONCLUSION For large hypervascular CBT,embolization of the feeding artery prior to resection is helpful.The hybrid operating theatre is the ideal platform to carry out such operations.展开更多
BACKGROUND Large intracranial dissecting aneurysm(IDA)in the anterior cerebral circulation is rare in children.There has been no consensus on the diagnosis and treatment for IDA in children.CASE SUMMARY We report a 3-...BACKGROUND Large intracranial dissecting aneurysm(IDA)in the anterior cerebral circulation is rare in children.There has been no consensus on the diagnosis and treatment for IDA in children.CASE SUMMARY We report a 3-year-old boy with a large ruptured IDA in the right middle cerebral artery(16 mm×14 mm).The IDA was successfully managed with clipping and angioplasty.Next-generation sequencing of the blood sample followed by bioinformatics analysis suggested that the rs78977446 variant of the ADAMTS13 gene is a risk for pediatric IDA.Three years after surgery,the boy was developmentally normal.CONCLUSION Clipping and angioplasty are effective treatments for ruptured IDA in the anterior cerebral circulation.ADAMTS13 rs78977446 is a risk factor for pediatric IDA.展开更多
Quality marker(Q-marker)of Chinese materia medica(CMM)plays an important role in quality control of CMM products.However,its research strategy and technique remain unclear.Based on the fact that quality standard of CM...Quality marker(Q-marker)of Chinese materia medica(CMM)plays an important role in quality control of CMM products.However,its research strategy and technique remain unclear.Based on the fact that quality standard of CMM should be associated with clinical efficacy,taking Jinqi Jiangtang tablet treating type 2 diabetes as an example,the Q-marker related to activity via the reverse analysis of drug metabolism in clinic and traceability of botanic biosynthetic pathways is discovered and validated.Therefore,we proposed a new research strategy of Q-marker of CMM with"Discovery of clinical active constituents as guidance,Reverse analysis of metabolic transformations as link,and Traceability of biosynthesis pathways as key",to improve quality control of CMM products.展开更多
A series of tensile tests, Charpy impact tests, optical microscopy observations, and field emission-scanning electron microscopy examinations, were carded out to investigate the mechanical properties and microstructur...A series of tensile tests, Charpy impact tests, optical microscopy observations, and field emission-scanning electron microscopy examinations, were carded out to investigate the mechanical properties and microstructural evolution of 20Cr32NilNb steel. Experimental results indicate that the as-cast microstructure of the steel typically consists of a supersaturated solid solution of austenite matrix with a network of interdendritic primary carbides （NbC and M23C6）. In the ex-service samples, large amounts of secondary carbides precipitate within austenite matrix. Besides the growth and coarsening of NbC and M23C6 carbides during service condition, the Ni-Nb silicides known as G-phase （Nil6Nb6Si7） are formed at the interdendritic boundaries. The microstructural evolution results in the degradation of the mechanical properties of the ex-service steel. In addition, the precipitate rate of G-phase, depending in part on Si content, varies greatly for the 20Cr32NilNb steel, which plays a key role in the long-term microstructural stability of the steel. Based on the X-ray diffraction data, time-temperature-transformation curve for the steel is obtained from the aged specimens.展开更多
The development of lightweight,flexible,and stretchable energy storage systems is essential for state-of-the-art electronic devices.We propose a new and broad strategy to fabricate a stretchable and conductive GO/CNTs...The development of lightweight,flexible,and stretchable energy storage systems is essential for state-of-the-art electronic devices.We propose a new and broad strategy to fabricate a stretchable and conductive GO/CNTs-TPU fiber electrode by direct wet spinning,from which a flexible fibrous supercapacitor is fabricated.The fibrous electrode exhibits a high strength of 11.68 MPa,high conductivity of 342 S/cm,and high specific capacitances(21.8 mF/cm,36.45 F/cm^3,and 95 F/g).The specific capacitance of the assembled all-solid-state hybrid fiber-shaped supercapacitor reaches 14.3 F/cm^3.After 5000 charge-discharge cycles,97%of the capacitance of the hybrid supercapacitor is maintained.These high-strength electrochemical electrode materials could be potential candidates for applications in practical and large-scale energy storage systems and textile clothes.展开更多
Background:The purpose of this analysis is to evaluate the current evidence with regard to the effectiveness and safety between coiling and clipping in patients with ruptured intracranial aneurysms(RIAs).Methods:We pe...Background:The purpose of this analysis is to evaluate the current evidence with regard to the effectiveness and safety between coiling and clipping in patients with ruptured intracranial aneurysms(RIAs).Methods:We performed a meta-analysis that compared clipping with coiling between July 2000 and September 2021.PubMed,EMBASE,and the Cochrane Library were searched for related articles systematically.And the treatment efficacy and postoperative complications were analyzed.Results:We identified three randomized controlled trials and thirty-seven observational studies involving 60,875 patients with ruptured cerebral aneurysms.The summary results showed that coiling was related a better quality of life(mRS0-2;OR=1.327;CI=1.093-1.612;p<0.05),a higher risk of mortality(OR=1.116;CI=1.054-1.180;p<0.05),higher rate of rebleeding(RR=1.410;CI=1.092-1.822;p<0.05),lower incidence of vasospasm(OR=0.787;CI=0.649-0.954;p<0.05),higher risk of hydrocephalous(RR=1.143;CI=1.043-1.252;p<0.05),lower risk of cerebral infarction(RR=0.669;CI=0.596-0.751;p<0.05),lower risk of neuro deficits(RR=0.720;CI=0.582-0.892;p<0.05),and a lower rate of complete occlusion(OR=0.495;CI=0.280-0.876;p<0.05).Conclusion:Coiling was significantly associated with a better life quality(mRS0-2),a lower incidence of postoperative complications,and a higher rate of mortality,rebleeding,hydrocephalous,and a lower rate of complete occlusion than clipping.展开更多
基金Supported by the Discipline Construction Project of Hunan University of Chinese Medicine,No.22JBZ002.
文摘BACKGROUND The impact of type 1 diabetes(T1D)on inflammatory bowel disease(IBD)remains unclear.AIM To analyze the causal relationship between T1D and IBD using Mendelian randomization(MR).METHODS Single nucleotide polymorphisms were sourced from FinnGen for T1D,IBD,ulcerative colitis(UC)and Crohn’s disease(CD).Inverse variance-weighted,MREgger,and weighted median tests were used to assess exposure-outcome causality.The MR-Egger intercept was used to assess horizontal pleiotropy.Cochran’s Q and leave-one-out method were used to analyze heterogeneity and sensitivity,respectively.RESULTS Our MR analysis indicated that T1D was associated with a reduced risk of IBD[odds ratio(OR):0.959;95%confidence interval(CI):0.938-0.980;P<0.001]and UC(OR:0.960;95%CI:0.929-0.992;P=0.015),with no significant association observed in terms of CD risk(OR:0.966;95%CI:0.913-1.022;P=0.227).The MR-Egger intercept showed no horizontal pleiotropy(P>0.05).Cochran’s Q and leave-one-out sensitivity analyses showed that the results were not heterogeneous(P>0.05)and were robust.CONCLUSION This MR analysis suggests that T1D serves as a potential protective factor against IBD and UC but is independent of CD.
基金Discipline Construction Project of Hunan University of Chinese Medicine,No.22JBZ002.
文摘BACKGROUND The benefits and risks of Xileisan(XLS)in the treatment of ulcerative colitis(UC)remain unclear.AIM The present study aimed to evaluate the efficacy and safety of the combination of XLS and mesalazine when treating UC.METHODS We searched eight databases for clinical trials evaluating the combination of XLS and mesalazine in the treatment of UC,up to January 2024.Meta-analysis and trial sequential analysis(TSA)were performed using Revman 5.3 and TSA 0.9.5.10 beta,respectively.RESULTS The present study included 13 clinical studies involving 990 patients,of which 501 patients received XLS combined with mesalazine while 489 patients received mesalazine alone.The meta-analysis showed that,in terms of efficacy,the combination of XLS and mesalazine significantly improved the clinical efficacy rate by 22%[risk ratio(RR)=1.22;95%CI:1.15–1.28;P<0.00001]and mucosal improvement rate by 25%(RR=1.25;95%CI:1.12–1.39;P=0.0001),while significantly reducing the duration of abdominal pain by 2.25 days[mean difference(MD)=-2.25;95%CI:-3.35 to-1.14;P<0.0001],diarrhea by 2.06 days(MD=-2.06;95%CI:-3.92 to-0.20;P=0.03),hematochezia by 2.32 days(MD=-2.32;95%CI:-4.02 to-0.62;P=0.008),tumor necrosis factor alpha by 16.25 ng/mL(MD=-16.25;95%CI:-20.48 to-12.01;P<0.00001),and interleukin-6 by 14.14 ng/mL(MD=-14.14;95%CI:-24.89 to-3.39;P=0.01).The TSA indicated conclusiveness in the meta-analysis of the efficacy endpoints.In terms of safety,the meta-analysis revealed that the combination of XLS and mesalazine did not increase the occurrence of total and gastrointestinal adverse events,abdominal distension,and erythema(P>0.05).The TSA showed non conclusive findings in the meta-analysis of the safety endpoints.Harbord’s test showed no publication bias(P=0.734).CONCLUSION Treatment with XLS alleviated the clinical symptoms,intestinal mucosal injury,and inflammatory response in patients with UC,while demonstrating good safety.
基金Supported by National Natural Science Foundation of China,No.U21A20411.
文摘BACKGROUND The effects of viral hepatitis(VH)on type 2 diabetes(T2D)remain controversial.AIM To analyze the causal correlation between different types of VH and T2D using Mendelian randomization(MR).METHODS Single nucleotide polymorphisms of VH,chronic hepatitis B(CHB),chronic hepatitis C(CHC)and T2D were obtained from the BioBank Japan Project,European Bioinformatics Institute,and FinnGen.Inverse variance weighted,MREgger,and weighted median were used to test exposure-outcome associations.The MR-Egger intercept analysis and Cochran’s Q test were used to assess horizontal pleiotropy and heterogeneity,respectively.Leave-one-out sensitivity analysis was used to evaluate the robustness of the MR analysis results.RESULTS The MR analysis showed no significant causal relationship between VH and T2D in Europeans[odds ratio(OR)=1.028;95%confidence interval(CI):0.995-1.062,P=0.101].There was a negative causal association between CHB and T2D among East Asians(OR=0.949;95%CI:0.931-0.968,P<0.001),while there was no significant causal association between CHC and T2D among East Asians(OR=1.018;95%CI:0.959-1.081,P=0.551).Intercept analysis and Cochran’s Q test showed no horizontal pleiotropy or heterogeneity(P>0.05).Sensitivity analysis showed that the results were robust.CONCLUSION Among East Asians,CHB is associated with a reduced T2D risk,but this association is limited by HBV load and cirrhosis.Although VH among Europeans and CHC among East Asians are not associated with the risk of T2D,focusing on blood glucose in patients with CHC is still relevant for the early detection of T2D induced by CHCmediated pathways of hepatic steatosis,liver fibrosis,and cirrhosis.
基金Supported by National Natural Science Foundation of China,NO.U21A20411.
文摘BACKGROUND As an emerging potential risk factor for gastric cancer,autoimmune gastritis(AIG)has garnered increasing attention from researchers.AIM To analyze the research overview and popular topics in the field of AIG using bibliometrics.METHODS Relevant publications on AIG in the Web of Science Core Collection were collated,and data visualization and analysis of the number of publications,countries,institutions,journals,authors,keywords,and citations were performed using software such as VOSviewer,CiteSpace,and Scimago Graphic.RESULTS In total,316 relevant articles were included in the analysis.From 2015 to 2022,the number of publications increased annually.The countries,institutions,authors,and journals with the highest number of publications in this field were Italy,Monash University,Toh BH,and Internal Medicine.The main keywords used in this field of research were pathogenesis,Helicobacter pylori,autoantibody,parietal cell antibody,atrophic gastritis,classification,diagnosis,autoimmune disease,risk,cancer,gastric cancer,vitamin B12 deficiency,and pernicious anemia.The following directions may be popular for future research:(1)The role of Helicobacter pylori in the pathogenesis of AIG;(2)diagnostic criteria for AIG and reference values for serum antibodies;(3)comorbidity mechanisms between AIG and other autoimmune diseases;(4)specific risks of AIG complicating gastric and other cancers;and(5)the role of vitamin B12 supplementation in patients with early-stage AIG.CONCLUSION This bibliometric analysis reported on popular topics and emerging trends in AIG,with diagnosis and prognosis being research hotspots in this field.
文摘Inflammation plays an important role in the pathological process of ischemic stroke,and systemic inflammation affects patient prognosis.As resident immune cells in the brain,microglia are significantly involved in immune defense and tissue repair under various pathological conditions,including cerebral ischemia.Although the differentiation of M1 and M2 microglia is certainly oversimplified,changing the activation state of microglia appears to be an intriguing therapeutic strategy for cerebral ischemia.Recent evidence indicates that both mesenchymal stem cells(MSCs)and MSC-derived extracellular vesicles(EVs)regulate inflammation and modify tissue repair under preclinical stroke conditions.However,the precise mechanisms of these signaling pathways,especially in the context of the mutual interaction between MSCs or MSC-derived EVs and resident microglia,have not been sufficiently unveiled.Hence,this review summarizes the state-ofthe-art knowledge on MSC-and MSC-EV-mediated regulation of microglial activity under ischemic stroke conditions with respect to various signaling pathways,including cytokines,neurotrophic factors,transcription factors,and microRNAs.
基金Supported by the National Natural Science Foundation of China,No.81571144the Natural Science Foundation of Tianjin City,No.16JCZDJC35700
文摘BACKGROUND Surgical treatment for large carotid body tumor (CBT),particularly the Shamblin III type,is challenging and rarely reported.CASE SUMMARY In July 2014,a 63-year-old woman presented to our hospital with a large CBT (130 mm × 60 mm × 70 mm).The lesion was hypervascular,spanned from the first to the seventh cervical vertebra,and adhered to the right common carotid artery (CCA),internal carotid artery (ICA) and external carotid artery (ECA).The resection was carried out in a hybrid operating theatre.First,we used Onyx gel to embolize the feeding artery.An ICA balloon was used to prevent gel entry into the ICA.After shrinkage and hardening of the CBT,we quickly resected the CBT as well as a part of the ECA that adhered to the CBT.A vascular shunt was inserted between CCA and ICA,and the part where the ICA was cut off from the CCA was directly sutured.A follow-up at four years later showed no neurological damage.CONCLUSION For large hypervascular CBT,embolization of the feeding artery prior to resection is helpful.The hybrid operating theatre is the ideal platform to carry out such operations.
基金Supported by National Natural Science Foundation of China,No.81571144。
文摘BACKGROUND Large intracranial dissecting aneurysm(IDA)in the anterior cerebral circulation is rare in children.There has been no consensus on the diagnosis and treatment for IDA in children.CASE SUMMARY We report a 3-year-old boy with a large ruptured IDA in the right middle cerebral artery(16 mm×14 mm).The IDA was successfully managed with clipping and angioplasty.Next-generation sequencing of the blood sample followed by bioinformatics analysis suggested that the rs78977446 variant of the ADAMTS13 gene is a risk for pediatric IDA.Three years after surgery,the boy was developmentally normal.CONCLUSION Clipping and angioplasty are effective treatments for ruptured IDA in the anterior cerebral circulation.ADAMTS13 rs78977446 is a risk factor for pediatric IDA.
基金the National Natural Science Foundation of China(81773891)the National Great New Drugs Development Project of China(2017ZX09301-040)+3 种基金the Beijing Natural Science Foundation(7162092)Beijing Talents Project(2017A19)Beijing Municipal Science&Technology Commission(XMLX201704,Z161100000516074)the Open Research Fund of the State Key Laboratory Breeding Base of Systematic Research,Development and Utilization of Chinese Medicinal Resources.
文摘Quality marker(Q-marker)of Chinese materia medica(CMM)plays an important role in quality control of CMM products.However,its research strategy and technique remain unclear.Based on the fact that quality standard of CMM should be associated with clinical efficacy,taking Jinqi Jiangtang tablet treating type 2 diabetes as an example,the Q-marker related to activity via the reverse analysis of drug metabolism in clinic and traceability of botanic biosynthetic pathways is discovered and validated.Therefore,we proposed a new research strategy of Q-marker of CMM with"Discovery of clinical active constituents as guidance,Reverse analysis of metabolic transformations as link,and Traceability of biosynthesis pathways as key",to improve quality control of CMM products.
基金financially supported by the National Natural Science Foundation of China(No.50775107)the China Petrochemical Corporation(No.315007)the Innovation Program for Graduate Students in Jiang Su Province of China(No.KYLX15_-0800)
文摘A series of tensile tests, Charpy impact tests, optical microscopy observations, and field emission-scanning electron microscopy examinations, were carded out to investigate the mechanical properties and microstructural evolution of 20Cr32NilNb steel. Experimental results indicate that the as-cast microstructure of the steel typically consists of a supersaturated solid solution of austenite matrix with a network of interdendritic primary carbides （NbC and M23C6）. In the ex-service samples, large amounts of secondary carbides precipitate within austenite matrix. Besides the growth and coarsening of NbC and M23C6 carbides during service condition, the Ni-Nb silicides known as G-phase （Nil6Nb6Si7） are formed at the interdendritic boundaries. The microstructural evolution results in the degradation of the mechanical properties of the ex-service steel. In addition, the precipitate rate of G-phase, depending in part on Si content, varies greatly for the 20Cr32NilNb steel, which plays a key role in the long-term microstructural stability of the steel. Based on the X-ray diffraction data, time-temperature-transformation curve for the steel is obtained from the aged specimens.
基金supported by the Fundamental Research Funds for the Central Universities(No.2232019A3-02)DHU Distinguished Young Professor Program(No.LZB2019002)+1 种基金Young Elite Scientists Sponsorship Program by CAST(No.2017QNRC001)J.L.acknowledges funding provided by the Donghua University Doctoral Innovation Fund Program(Nos.17D310606,106-06-0019058).
文摘The development of lightweight,flexible,and stretchable energy storage systems is essential for state-of-the-art electronic devices.We propose a new and broad strategy to fabricate a stretchable and conductive GO/CNTs-TPU fiber electrode by direct wet spinning,from which a flexible fibrous supercapacitor is fabricated.The fibrous electrode exhibits a high strength of 11.68 MPa,high conductivity of 342 S/cm,and high specific capacitances(21.8 mF/cm,36.45 F/cm^3,and 95 F/g).The specific capacitance of the assembled all-solid-state hybrid fiber-shaped supercapacitor reaches 14.3 F/cm^3.After 5000 charge-discharge cycles,97%of the capacitance of the hybrid supercapacitor is maintained.These high-strength electrochemical electrode materials could be potential candidates for applications in practical and large-scale energy storage systems and textile clothes.
文摘Background:The purpose of this analysis is to evaluate the current evidence with regard to the effectiveness and safety between coiling and clipping in patients with ruptured intracranial aneurysms(RIAs).Methods:We performed a meta-analysis that compared clipping with coiling between July 2000 and September 2021.PubMed,EMBASE,and the Cochrane Library were searched for related articles systematically.And the treatment efficacy and postoperative complications were analyzed.Results:We identified three randomized controlled trials and thirty-seven observational studies involving 60,875 patients with ruptured cerebral aneurysms.The summary results showed that coiling was related a better quality of life(mRS0-2;OR=1.327;CI=1.093-1.612;p<0.05),a higher risk of mortality(OR=1.116;CI=1.054-1.180;p<0.05),higher rate of rebleeding(RR=1.410;CI=1.092-1.822;p<0.05),lower incidence of vasospasm(OR=0.787;CI=0.649-0.954;p<0.05),higher risk of hydrocephalous(RR=1.143;CI=1.043-1.252;p<0.05),lower risk of cerebral infarction(RR=0.669;CI=0.596-0.751;p<0.05),lower risk of neuro deficits(RR=0.720;CI=0.582-0.892;p<0.05),and a lower rate of complete occlusion(OR=0.495;CI=0.280-0.876;p<0.05).Conclusion:Coiling was significantly associated with a better life quality(mRS0-2),a lower incidence of postoperative complications,and a higher rate of mortality,rebleeding,hydrocephalous,and a lower rate of complete occlusion than clipping.
