1 Introduction Rapid socioeconomic progress has greatly affected the lifestyle in China.Consequently,owing to lifestyle changes,urbanization,and accelerated population aging,the risk of cardiovascular diseases(CVD)has...1 Introduction Rapid socioeconomic progress has greatly affected the lifestyle in China.Consequently,owing to lifestyle changes,urbanization,and accelerated population aging,the risk of cardiovascular diseases(CVD)has increased.The incidence of CVD has been increasing continuously and this upward trend is projected to continue in the next decade.The growing burden of CVD has become a major public health issue.展开更多
As a chronic inflammatory disease of the liver,the pathogenic mechanisms of autoimmune hepatitis (AIH) have not yet been elucidated,with prognosis and diagnosis remaining unsatisfied.Currently the only viable treatmen...As a chronic inflammatory disease of the liver,the pathogenic mechanisms of autoimmune hepatitis (AIH) have not yet been elucidated,with prognosis and diagnosis remaining unsatisfied.Currently the only viable treatments of AIH are immunosuppressant application and liver transplantation.It is considered that lack of good animal AIH models is the main reason for the shortage of a simple and efficient cure.The Concanavalin A (Con A) model is a typical and well established model for investigating T-cell and macrophage dependent liver injury in mice,which closely mimics the pathogenesis mechanisms and pathological changes of patients,and is regarded as the best experimental model for AIH research so far.In this paper we eluci-dated the pathogenic mechanisms of AIH and the evolution of relative animal models.We go on to further focus on Con A-induced liver injury from the point of immunological mechanisms and the change of cytokine levels.Finally,we manifested the clinical significance of the AIH animal models and the challenges they would meet during their future development.展开更多
1 Introduction Major and profound changes have taken place in China over the past 30 years. An epidemic of cardiovascular diseases （CVD） in China is emerging as a result of lifestyle changes, urbanization, and the ...1 Introduction Major and profound changes have taken place in China over the past 30 years. An epidemic of cardiovascular diseases （CVD） in China is emerging as a result of lifestyle changes, urbanization, and the accelerated process of aging. The incidence of CVD is continuously increasing and will remain an upward trend in the next decade. Since 2005,展开更多
The prevalence of cardiovascular diseases （CVDs） is associated with the socioeconomic prosperity, lifestyle changes, accelerated process of ageing and urbanization. The prevalence of CVDs is continuously increasing ...The prevalence of cardiovascular diseases （CVDs） is associated with the socioeconomic prosperity, lifestyle changes, accelerated process of ageing and urbanization. The prevalence of CVDs is continuously increasing in China and will remain an upward trend in the next 10 years. CVDs are the leading cause of death for Chinese in both urban area and rural area. Nowadays, 41.09% of deaths in rural area and 42.52% of deaths in urban area are caused by CVDs in China. The burden of CVDs remains heavy and has become an important public health problem. Effective strategies should be enforced urgently for the prevention of CVDs under the supervision of the government. In 2012, the Ministry of Health of China and 14 governmental departments jointly issued the Work Plan for Chronic Disease Prevention and Control in China （2012-2015）, a guideline for the prevention of chronic diseases, especially CVDs in China.展开更多
Background and purpose COVID-19 is an infectious disease caused by Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2).Apart from respiratory complications,acute cerebrovascular disease(CVD)has been observed i...Background and purpose COVID-19 is an infectious disease caused by Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2).Apart from respiratory complications,acute cerebrovascular disease(CVD)has been observed in some patients with COVID-19.Therefore,we described the clinical characteristics,laboratory features,treatment and outcomes of CVD complicating SARS-CoV-2 infection.Materials and methods Demographic and clinical characteristics,laboratory findings,treatments and clinical outcomes were collected and analysed.Clinical characteristics and laboratory findings of patients with COVID-19 with or without new-onset CVD were compared.Results Of 219 patients with COVID-19,10(4.6%)developed acute ischaemic stroke and 1(0.5%)had intracerebral haemorrhage.COVID-19 with new onset of CVD were significantly older(75.7±10.8 years vs 52.1±15.3 years,p<0.001),more likely to present with severe COVID-19(81.8%vs 39.9%,p<0.01)and were more likely to have cardiovascular risk factors,including hypertension,diabetes and medical history of CVD(all p<0.05).In addition,they were more likely to have increased inflammatory response and hypercoagulable state as reflected in C reactive protein(51.1(1.3-127.9)vs 12.1(0.1-212.0)mg/L,p<0.05)and D-dimer(6.9(0.3-20.0)vs 0.5(0.1-20.0)mg/L,p<0.001).Of 10 patients with ischemic stroke;6 received antiplatelet treatment with aspirin or clopidogrel;and 3 of them died.The other four patients received anticoagulant treatment with enoxaparin and 2 of them died.As of 24 March 2020,six patients with CVD died(54.5%).Conclusion Acute CVD is not uncommon in COVID-19.Our findings suggest that older patients with risk factors are more likely to develop CVD.The development of CVD is an important negative prognostic factor which requires further study to identify optimal management strategy to combat the COVID-19 outbreak.展开更多
Cultivated soybeans may lose some useful genetic loci during domestication. Introgression of genes from wild soybeans could broaden the genetic background and improve soybean agronomic traits. In this study, through w...Cultivated soybeans may lose some useful genetic loci during domestication. Introgression of genes from wild soybeans could broaden the genetic background and improve soybean agronomic traits. In this study, through whole-genome sequencing of a recombinant inbred line population derived from a cross between a wild soybean ZYD7 and a cultivated soybean HN44, and mapping of quantitative trait loci for seed weight, we discovered that a phosphatase 2C-1 （PP2C-1） allele from wild soybean ZYD7 contributes to the increase in seed weight/size. PP2C-1 may achieve this function by enhancing cell size of integument and activating a subset of seed trait-related genes. We found that PP2C-1 is associ- ated with GmBZR1, a soybean ortholog of Arabidopsis BZR1, one of key transcription factors in brassi- nosteroid （BR） signaling, and facilitate accumulation of dephosphorylated GmBZR1. In contrast, the PP2C-2 allele with variations of a few amino acids at the N-terminus did not exhibit this function. More- over, we showed that GmBZR1 could promote seed weight/size in transgenic plants. Through analysis of cultivated soybean accessions, we found that 40% of the examined accessions do not have the PP2C-1 allele, suggesting that these accessions can be improved by introduction of this allele. Taken together, our study identifies an elite allele PP2C-1, which can enhance seed weight and/or size in soybean, and pinpoints that manipulation of this allele by molecular-assisted breeding may increase production in soybean and other legumes/crops.展开更多
The activities of transcription factors （TFs） require interactions with specific DNA sequences and other reg- ulatory proteins. To detect such interactions in Arabidopsis, we developed a high-throughput screening sy...The activities of transcription factors （TFs） require interactions with specific DNA sequences and other reg- ulatory proteins. To detect such interactions in Arabidopsis, we developed a high-throughput screening system with a Gateway-compatible Gal4-AD-TF library of 1589 Arabidopsis TFs, which can be easily screened by mating-based yeast-one-hybrid （YIH） and yeast-two-hybrid （Y2H） methods. The efficiency of the system was validated by examining two well-characterized TF-DNA and TF-protein interactions： the CHE-CCA1 promoter interaction by YIH and NPR1-TGAs interactions by Y2H. We used this system to identify eight TFs that interact with a Mediator subunit, Med25, a key reg- ulator in JA signaling. We identified five TFs that interacted with the GCC-box cis-element in the promoter of PDF1.2, a downstream gene of Med25. We found that three of these TFs, all from the AP2-EREBP family, interact directly both with Med25 and the GCC-box of PDF1.2, suggesting that Med25 regulates PDF1.2 expression through these three TFs. These results demonstrate that this high-throughput Y1H/Y2H screening system is an efficient tool for studying transcrip- tional regulation networks in Arabidopsis. This system will be available for other Arabidopsis researchers, and thus it provides a vital resource for the Arabidopsis community.展开更多
Corrosion degradation is detrimental to metal structures as it shortens their lifetime and leads to huge economic losses and unexpected disasters.Therefore,the detection and monitoring of corrosion degradation is of g...Corrosion degradation is detrimental to metal structures as it shortens their lifetime and leads to huge economic losses and unexpected disasters.Therefore,the detection and monitoring of corrosion degradation is of great importance.Herein,we briefly review the state-of-the-art electrochemical methods,instrumentation(based on virtual instrumentation),and advanced sensor/probes that are used in the field for the assessment of corrosion damage.Typical corrosion monitoring results,some of which have been obtained at Tianjin University in the past 30 years,for metallic materials and organic coating/metal systems in atmospheric,marine,and soil conditions in the field are presented.Detection methods,data analysis,and theoretical and mathematical models regarding each corrosion system are discussed,and the challenges,problems and possible solutions for each case are suggested.Lastly,future developments,such as wireless,intelligent,and automatic electrochemical measurement,that will augment the present electrochemical methods of evaluating corrosion degradation are summarized.展开更多
Graphite phase carbon nitride(g-C_(3)N_(4))is a promising catalyst for artificial photocatalytic carbon dioxide(CO_(2))reduction.However,the fast carrier recombination and the inadequacy of the CO_(2)reduction active ...Graphite phase carbon nitride(g-C_(3)N_(4))is a promising catalyst for artificial photocatalytic carbon dioxide(CO_(2))reduction.However,the fast carrier recombination and the inadequacy of the CO_(2)reduction active site in g-C_(3)N_(4)block the escalation of the perfor-mance.In this work,NiCo layered double hydroxide(NiCo LDH)nanoflowers were self-assembled with ultrathin graphite phase carbon nitride(g-C_(3)N_(4))by an ultrasonic stirring strategy utilizing the Zeta potential difference.The formed NiCo LDH/ultrathin g-C_(3)N_(4)nanosheets(LDH-CN)photocatalysts own the merits of rich active sites and Z-scheme heterojunction,which lead to the enhanced CO_(2)reduction activity and selectivity.The highest yields of CO and CH_(4)were 114.24 and 26.48μmol·h^(-1)·g^(-1),which were much greater than those of g-C_(3)N_(4)and LDH.Meanwhile,the enhanced selectivity for CO confirmed the strong redox ability in the LDH-CN caused by the Z-scheme.The heterojunction-induced built-in electrical field can promote the separation and migration of photoinduced electrons and holes.This study provides a theoretical basis for designing high-performance photocatalysts.展开更多
AIM:To clarify the role of surgical resection for multiple hepatocellular carcinomas(HCCs)compared to transarterial chemoembolization(TACE)and liver transplantation(LT). METHODS:Among the HCC patients who were managed...AIM:To clarify the role of surgical resection for multiple hepatocellular carcinomas(HCCs)compared to transarterial chemoembolization(TACE)and liver transplantation(LT). METHODS:Among the HCC patients who were managed at Yonsei University Health System between January 2003 and December 2008,160 patients who met the following criteria were retrospectively enrolled:(1) two or three radiologically diagnosed HCCs;(2)no radiologic vascular invasion;(3)Child-Pugh class A;(4) main tumor smaller than 5 cm in diameter;and(5) platelet count greater than 50 000/mm3.Long-term outcomes were compared among the following three treatment modalities:surgical resection or combined radiofrequency ablation(RFA)(n=36),TACE(n=107), and LT(n=17).The survival curves were computed using the Kaplan-Meier method and compared with a log-rank test.To identify the patients who gained a survival benefit from surgical resection,we also investigated prognostic factors for survival following surgical resection.Multivariate analyses of the prognostic factors for survival were performed using the Cox proportional hazard model. RESULTS:The overall survival(OS)rate was significantly higher in the surgical resection group than in the TACE group(48.1%vs 28.9%at 5 years,P<0.005). LT had the best OS rate,which was better than that of the surgical resection group,although the difference was not statistically significant(80.2%vs 48.1%at 5 years,P=0.447).The disease-free survival rates were also significantly higher in the LT group than in the surgical resection group(88.2%vs 11.2%at 5 years, P<0.001).Liver cirrhosis was the only significant prognostic factor for poor OS after surgical resection. Clinical liver cirrhosis rates were 55.6%(20/36)in the resection group and 93.5%(100/107)in the TACE group.There were 19 major and 17 minor resections. En bloc resection was performed in 23 patients,multisite resection was performed in 5 patients,and combined resection with RFA was performed in 8 patients. In the TACE group,only 34 patients(31.8%)were recorded as h展开更多
文摘1 Introduction Rapid socioeconomic progress has greatly affected the lifestyle in China.Consequently,owing to lifestyle changes,urbanization,and accelerated population aging,the risk of cardiovascular diseases(CVD)has increased.The incidence of CVD has been increasing continuously and this upward trend is projected to continue in the next decade.The growing burden of CVD has become a major public health issue.
基金Supported by Program for Excellent Talents of Anhui Province,No.2006JQ1196
文摘As a chronic inflammatory disease of the liver,the pathogenic mechanisms of autoimmune hepatitis (AIH) have not yet been elucidated,with prognosis and diagnosis remaining unsatisfied.Currently the only viable treatments of AIH are immunosuppressant application and liver transplantation.It is considered that lack of good animal AIH models is the main reason for the shortage of a simple and efficient cure.The Concanavalin A (Con A) model is a typical and well established model for investigating T-cell and macrophage dependent liver injury in mice,which closely mimics the pathogenesis mechanisms and pathological changes of patients,and is regarded as the best experimental model for AIH research so far.In this paper we eluci-dated the pathogenic mechanisms of AIH and the evolution of relative animal models.We go on to further focus on Con A-induced liver injury from the point of immunological mechanisms and the change of cytokine levels.Finally,we manifested the clinical significance of the AIH animal models and the challenges they would meet during their future development.
文摘1 Introduction Major and profound changes have taken place in China over the past 30 years. An epidemic of cardiovascular diseases （CVD） in China is emerging as a result of lifestyle changes, urbanization, and the accelerated process of aging. The incidence of CVD is continuously increasing and will remain an upward trend in the next decade. Since 2005,
文摘The prevalence of cardiovascular diseases （CVDs） is associated with the socioeconomic prosperity, lifestyle changes, accelerated process of ageing and urbanization. The prevalence of CVDs is continuously increasing in China and will remain an upward trend in the next 10 years. CVDs are the leading cause of death for Chinese in both urban area and rural area. Nowadays, 41.09% of deaths in rural area and 42.52% of deaths in urban area are caused by CVDs in China. The burden of CVDs remains heavy and has become an important public health problem. Effective strategies should be enforced urgently for the prevention of CVDs under the supervision of the government. In 2012, the Ministry of Health of China and 14 governmental departments jointly issued the Work Plan for Chronic Disease Prevention and Control in China （2012-2015）, a guideline for the prevention of chronic diseases, especially CVDs in China.
基金This study was funded by the National Key Research and Development Program of China(number 2018YFC1312200 to BH)the National Natural Science Foundation of China(number 81820108010 to BH).
文摘Background and purpose COVID-19 is an infectious disease caused by Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2).Apart from respiratory complications,acute cerebrovascular disease(CVD)has been observed in some patients with COVID-19.Therefore,we described the clinical characteristics,laboratory features,treatment and outcomes of CVD complicating SARS-CoV-2 infection.Materials and methods Demographic and clinical characteristics,laboratory findings,treatments and clinical outcomes were collected and analysed.Clinical characteristics and laboratory findings of patients with COVID-19 with or without new-onset CVD were compared.Results Of 219 patients with COVID-19,10(4.6%)developed acute ischaemic stroke and 1(0.5%)had intracerebral haemorrhage.COVID-19 with new onset of CVD were significantly older(75.7±10.8 years vs 52.1±15.3 years,p<0.001),more likely to present with severe COVID-19(81.8%vs 39.9%,p<0.01)and were more likely to have cardiovascular risk factors,including hypertension,diabetes and medical history of CVD(all p<0.05).In addition,they were more likely to have increased inflammatory response and hypercoagulable state as reflected in C reactive protein(51.1(1.3-127.9)vs 12.1(0.1-212.0)mg/L,p<0.05)and D-dimer(6.9(0.3-20.0)vs 0.5(0.1-20.0)mg/L,p<0.001).Of 10 patients with ischemic stroke;6 received antiplatelet treatment with aspirin or clopidogrel;and 3 of them died.The other four patients received anticoagulant treatment with enoxaparin and 2 of them died.As of 24 March 2020,six patients with CVD died(54.5%).Conclusion Acute CVD is not uncommon in COVID-19.Our findings suggest that older patients with risk factors are more likely to develop CVD.The development of CVD is an important negative prognostic factor which requires further study to identify optimal management strategy to combat the COVID-19 outbreak.
文摘Cultivated soybeans may lose some useful genetic loci during domestication. Introgression of genes from wild soybeans could broaden the genetic background and improve soybean agronomic traits. In this study, through whole-genome sequencing of a recombinant inbred line population derived from a cross between a wild soybean ZYD7 and a cultivated soybean HN44, and mapping of quantitative trait loci for seed weight, we discovered that a phosphatase 2C-1 （PP2C-1） allele from wild soybean ZYD7 contributes to the increase in seed weight/size. PP2C-1 may achieve this function by enhancing cell size of integument and activating a subset of seed trait-related genes. We found that PP2C-1 is associ- ated with GmBZR1, a soybean ortholog of Arabidopsis BZR1, one of key transcription factors in brassi- nosteroid （BR） signaling, and facilitate accumulation of dephosphorylated GmBZR1. In contrast, the PP2C-2 allele with variations of a few amino acids at the N-terminus did not exhibit this function. More- over, we showed that GmBZR1 could promote seed weight/size in transgenic plants. Through analysis of cultivated soybean accessions, we found that 40% of the examined accessions do not have the PP2C-1 allele, suggesting that these accessions can be improved by introduction of this allele. Taken together, our study identifies an elite allele PP2C-1, which can enhance seed weight and/or size in soybean, and pinpoints that manipulation of this allele by molecular-assisted breeding may increase production in soybean and other legumes/crops.
文摘The activities of transcription factors （TFs） require interactions with specific DNA sequences and other reg- ulatory proteins. To detect such interactions in Arabidopsis, we developed a high-throughput screening system with a Gateway-compatible Gal4-AD-TF library of 1589 Arabidopsis TFs, which can be easily screened by mating-based yeast-one-hybrid （YIH） and yeast-two-hybrid （Y2H） methods. The efficiency of the system was validated by examining two well-characterized TF-DNA and TF-protein interactions： the CHE-CCA1 promoter interaction by YIH and NPR1-TGAs interactions by Y2H. We used this system to identify eight TFs that interact with a Mediator subunit, Med25, a key reg- ulator in JA signaling. We identified five TFs that interacted with the GCC-box cis-element in the promoter of PDF1.2, a downstream gene of Med25. We found that three of these TFs, all from the AP2-EREBP family, interact directly both with Med25 and the GCC-box of PDF1.2, suggesting that Med25 regulates PDF1.2 expression through these three TFs. These results demonstrate that this high-throughput Y1H/Y2H screening system is an efficient tool for studying transcrip- tional regulation networks in Arabidopsis. This system will be available for other Arabidopsis researchers, and thus it provides a vital resource for the Arabidopsis community.
基金the National Natural Science Foundation of China(Nos.52031007,52171077)partial support of his contribution to the work by the University of California at Berkeley。
文摘Corrosion degradation is detrimental to metal structures as it shortens their lifetime and leads to huge economic losses and unexpected disasters.Therefore,the detection and monitoring of corrosion degradation is of great importance.Herein,we briefly review the state-of-the-art electrochemical methods,instrumentation(based on virtual instrumentation),and advanced sensor/probes that are used in the field for the assessment of corrosion damage.Typical corrosion monitoring results,some of which have been obtained at Tianjin University in the past 30 years,for metallic materials and organic coating/metal systems in atmospheric,marine,and soil conditions in the field are presented.Detection methods,data analysis,and theoretical and mathematical models regarding each corrosion system are discussed,and the challenges,problems and possible solutions for each case are suggested.Lastly,future developments,such as wireless,intelligent,and automatic electrochemical measurement,that will augment the present electrochemical methods of evaluating corrosion degradation are summarized.
基金financially supported by the National Natural Science Foundation of China (Nos.22005123, 21776118,22178152 and 22008095)Jiangsu University Foundation (No.20JDG16)+4 种基金Jiangsu Funds for Distinguished Young Scientists (No.BK20190045)the Special Foundation of China Postdoctoral (No.2020TQ0127)Jiangsu Province Postdoctoral Science Foundation (Nos.2021K396C and 2021K382C)Jiangsu Agricultural Science and Technology Independent Innovation Fund (No.CX (21)3067)the Postgraduate High-tech Research Key Laboratory of Zhenjiang (No.SS2018002)
文摘Graphite phase carbon nitride(g-C_(3)N_(4))is a promising catalyst for artificial photocatalytic carbon dioxide(CO_(2))reduction.However,the fast carrier recombination and the inadequacy of the CO_(2)reduction active site in g-C_(3)N_(4)block the escalation of the perfor-mance.In this work,NiCo layered double hydroxide(NiCo LDH)nanoflowers were self-assembled with ultrathin graphite phase carbon nitride(g-C_(3)N_(4))by an ultrasonic stirring strategy utilizing the Zeta potential difference.The formed NiCo LDH/ultrathin g-C_(3)N_(4)nanosheets(LDH-CN)photocatalysts own the merits of rich active sites and Z-scheme heterojunction,which lead to the enhanced CO_(2)reduction activity and selectivity.The highest yields of CO and CH_(4)were 114.24 and 26.48μmol·h^(-1)·g^(-1),which were much greater than those of g-C_(3)N_(4)and LDH.Meanwhile,the enhanced selectivity for CO confirmed the strong redox ability in the LDH-CN caused by the Z-scheme.The heterojunction-induced built-in electrical field can promote the separation and migration of photoinduced electrons and holes.This study provides a theoretical basis for designing high-performance photocatalysts.
文摘AIM:To clarify the role of surgical resection for multiple hepatocellular carcinomas(HCCs)compared to transarterial chemoembolization(TACE)and liver transplantation(LT). METHODS:Among the HCC patients who were managed at Yonsei University Health System between January 2003 and December 2008,160 patients who met the following criteria were retrospectively enrolled:(1) two or three radiologically diagnosed HCCs;(2)no radiologic vascular invasion;(3)Child-Pugh class A;(4) main tumor smaller than 5 cm in diameter;and(5) platelet count greater than 50 000/mm3.Long-term outcomes were compared among the following three treatment modalities:surgical resection or combined radiofrequency ablation(RFA)(n=36),TACE(n=107), and LT(n=17).The survival curves were computed using the Kaplan-Meier method and compared with a log-rank test.To identify the patients who gained a survival benefit from surgical resection,we also investigated prognostic factors for survival following surgical resection.Multivariate analyses of the prognostic factors for survival were performed using the Cox proportional hazard model. RESULTS:The overall survival(OS)rate was significantly higher in the surgical resection group than in the TACE group(48.1%vs 28.9%at 5 years,P<0.005). LT had the best OS rate,which was better than that of the surgical resection group,although the difference was not statistically significant(80.2%vs 48.1%at 5 years,P=0.447).The disease-free survival rates were also significantly higher in the LT group than in the surgical resection group(88.2%vs 11.2%at 5 years, P<0.001).Liver cirrhosis was the only significant prognostic factor for poor OS after surgical resection. Clinical liver cirrhosis rates were 55.6%(20/36)in the resection group and 93.5%(100/107)in the TACE group.There were 19 major and 17 minor resections. En bloc resection was performed in 23 patients,multisite resection was performed in 5 patients,and combined resection with RFA was performed in 8 patients. In the TACE group,only 34 patients(31.8%)were recorded as h
