Hypoxia is a common environmental stress factor in aquatic organisms,which varies among fish species.However,the mechanisms underlying the ability of fish species to tolerate hypoxia are not well known.Here,we showed ...Hypoxia is a common environmental stress factor in aquatic organisms,which varies among fish species.However,the mechanisms underlying the ability of fish species to tolerate hypoxia are not well known.Here,we showed that hypoxia response in different fish species was affected by lipid catabolism and preference for lipid or carbohydrate energy sources.Activation of biochemical lipid catabolism through peroxisome proliferator-activated receptor alpha(Pparα)or increasing mitochondrial fat oxidation in tilapia decreased tolerance to acute hypoxia by increasing oxygen consumption and oxidative damage and reducing carbohydrate catabolism as an energy source.Conversely,lipid catabolism inhibition by suppressing entry of lipids into mitochondria in tilapia or individually knocking out three key genes of lipid catabolism in zebrafish increased tolerance to acute hypoxia by decreasing oxygen consumption and oxidative damage and promoting carbohydrate catabolism.However,anaerobic glycolysis suppression eliminated lipid catabolism inhibition-promoted hypoxia tolerance in adipose triglyceride lipase(atgl)mutant zebrafish.Using 14 fish species with different trophic levels and taxonomic status,the fish preferentially using lipids for energy were more intolerant to acute hypoxia than those preferentially using carbohydrates.Our study shows that hypoxia tolerance in fish depends on catabolic preference for lipids or carbohydrates,which can be modified by regulating lipid catabolism.展开更多
A novel nonprecious metal material consisting of Coembedded porous interconnected multichannel carbon nanofibers(Co/IMCCNFs) was rationally designed for oxygen reduction reaction(ORR)electrocatalysis.In the synthesis,...A novel nonprecious metal material consisting of Coembedded porous interconnected multichannel carbon nanofibers(Co/IMCCNFs) was rationally designed for oxygen reduction reaction(ORR)electrocatalysis.In the synthesis,ZnCo2O4 was employed to form interconnected mesoporous channels and provide highly active Co3O4/Co core–shell nanoparticle-based sites for the ORR.The IMC structure with a large synergistic effect of the N and Co active sites provided fast ORR electrocatalysis kinetics.The Co/IMCCNFs exhibited a high half-wave potential of 0.82 V(vs.reversible hydrogen electrode) and excellent stability with a current retention up to 88% after 12,000 cycles in a current–time test,which is only 55% for 30 wt% Pt/C.展开更多
Objective： Although superior clinical benefits of epidermal growth factor receptor （EGFR） tyrosine kinase inhibitors （TKIs） in the treatment of advanced non-small-cell lung cancer （NSCLC） had been reported, the...Objective： Although superior clinical benefits of epidermal growth factor receptor （EGFR） tyrosine kinase inhibitors （TKIs） in the treatment of advanced non-small-cell lung cancer （NSCLC） had been reported, the survival difference between exon 19 deletion （Dell9） and exon 21 Leu858Arg substitution （L858R） remains controversial. The purpose of this study is to investigate the differences in progression-free survival （PFS） and overall survival （OS） between different EGFR mutant subtypes among advanced NSCLC patients receiving gefitinib. Methods： There were 204 advanced NSCLC patients with EGFR mutations treated with gefitinib were enrolled in this retrospective cohort study. Patients were divided into the EGFR Dell9 group and the L858R mutated group according to their mutant subtype. Propensity score matching （PSM） was conducted by using a nearest-neighbor algorithm （1：1） to adjust for demographical and clinical covariates. Survival curves were constructed with the Kaplan-Meier method and compared by using the log-rank test. Results： The PFS in Dell9 group was similar to that in the L858R group [before PSM 8.6 vs. 7.2 months, P=0.072; after PSM 7.3 vs. 7.2 months, P=0.155]. No differences were detected in OS between the L858R and the Dell9 group （before PSM 17.8 vs. 13.1 months, P=0.253; after PSM 16.9 vs. 13.1 months, P=0.339）. The Dell9 group was significantly younger compared with the L858R mutation group in age （P=0.015）. Conclusions： No significant difference was found in the PFS or OS between the Dell9 and L858R mutant NSCLC patients receiving gefitinib. The age gap might contribute to the survival differences between Dell9 and L858R groups. PSM is of important value to the elimination of potential bias.展开更多
Synchronous breast cancer and breast lymphoma are rare. It is of high rate of misdiagnosis in clinical practice. Here we present two cases with this presentation. They are both middle-aged women, with stage I invasive...Synchronous breast cancer and breast lymphoma are rare. It is of high rate of misdiagnosis in clinical practice. Here we present two cases with this presentation. They are both middle-aged women, with stage I invasive ductal carcinoma of the breast. One patient happened to have primary breast lymphoma （PBL）; the other was secondary breast lymphoma （SBL）. Their pathology and immunohistochemistry （IHC） findings supported the diagnosis of multiple primary carcinoma. Both patients had a surgery. Then they both received CHOP regime chemotherapy and subsequent endocrine therapy.展开更多
目的:观察含莫西沙星(Mfx)和含左氧氟沙星(Lfx)方案治疗MDR-TB的疗效和安全性,为临床用药提供指导。方法:选取2012年1月至2014年6月期间兰州市肺科医院收治的85例耐多药肺结核患者作为研究对象。将所有患者按随机数字表法分为治疗组43例...目的:观察含莫西沙星(Mfx)和含左氧氟沙星(Lfx)方案治疗MDR-TB的疗效和安全性,为临床用药提供指导。方法:选取2012年1月至2014年6月期间兰州市肺科医院收治的85例耐多药肺结核患者作为研究对象。将所有患者按随机数字表法分为治疗组43例,对照组42例,治疗组服用含M f x的治疗方案进行治疗,对照组含L f x的方案进行治疗,两组除M f x和L f x外,方案中其他用药均相同。比较分析两组不同时间痰菌阴转率、影像学表现及治疗前后的相关不良反应。采用SPSS17.0软件进行数据分析,计量资料采用t检验,计数资料采用χ~2检验,P<0.05表示差异具有统计学意义。结果:治疗组失访2例,对照组失访1例,最终治疗3、6、12、18、24个月末含Mfx组阴转率(56.10%,23/41;78.05%,32/41;85.37%,35/41;87.80%,36/41;87.80%,36/41)高于含Lfx组(32.50%,13/40;55.00%,22/40;65.00%,26/40;70.00%,28/40;70.00%,28/40),差异有统计学意义(χ~2值分别为3.98、4.84、3.94、3.87、3.87,P值均<0.05);治疗结束后胸片病灶吸收率和空洞缩小率治疗组均高于对照组,分别为90.24%,37/41;75.00%;30/40和87.80%,36/41;67.50%,27/40。胸片病灶吸收率差异无统计学意义(χ~2=3.291,P>0.05)。空洞缩小率差异有统计学意义(χ~2=4.83,P<0.05)。结论:含莫西沙星方案治疗耐多药患者疗效优于含左氧氟沙星方案。展开更多
Based on core and casting slice observation, well drilling and logging data, the source of carbonate materials, lithology together with electric properties, types, genesis mechanism and distribution of calcareous inte...Based on core and casting slice observation, well drilling and logging data, the source of carbonate materials, lithology together with electric properties, types, genesis mechanism and distribution of calcareous interbeds in Songtao uplift and its periphery of Qiongdongnan Basin have been thoroughly analyzed. Results show that typical features have been appeared from well logging curves, containing low gamma-ray, low acoustic travel time, low neutron value, high density, as well as bright white calcium nodules or bands in electrical imaging well-logging curves. Drilling results reveal that calcareous interbeds developed mostly in high position of paleostructures and their distribution was controlled by the combined effects of macroscopic and microscopic factors. Macroscopically, calcareous interbeds relate to paleogeomorphology together with the combination of sandstone and mudstone. They are also controlled microscopically by the source of carbonate cements and pore space. Under normal circumstances, with regard to the same sand, the closer to the mudstone and the thicker of mudstone, the more conducive to the formation of calcareous interlayer. Low compaction strength, high content of rigid particles, coarse grain size, well-sorted sandstone and large pore space during carbonate cementation are favorable for the development of calcareous interbeds.展开更多
基金supported by the National Natural Science Foundation of China (31830102,32202950)。
文摘Hypoxia is a common environmental stress factor in aquatic organisms,which varies among fish species.However,the mechanisms underlying the ability of fish species to tolerate hypoxia are not well known.Here,we showed that hypoxia response in different fish species was affected by lipid catabolism and preference for lipid or carbohydrate energy sources.Activation of biochemical lipid catabolism through peroxisome proliferator-activated receptor alpha(Pparα)or increasing mitochondrial fat oxidation in tilapia decreased tolerance to acute hypoxia by increasing oxygen consumption and oxidative damage and reducing carbohydrate catabolism as an energy source.Conversely,lipid catabolism inhibition by suppressing entry of lipids into mitochondria in tilapia or individually knocking out three key genes of lipid catabolism in zebrafish increased tolerance to acute hypoxia by decreasing oxygen consumption and oxidative damage and promoting carbohydrate catabolism.However,anaerobic glycolysis suppression eliminated lipid catabolism inhibition-promoted hypoxia tolerance in adipose triglyceride lipase(atgl)mutant zebrafish.Using 14 fish species with different trophic levels and taxonomic status,the fish preferentially using lipids for energy were more intolerant to acute hypoxia than those preferentially using carbohydrates.Our study shows that hypoxia tolerance in fish depends on catabolic preference for lipids or carbohydrates,which can be modified by regulating lipid catabolism.
基金the support from the Fundamental Research Funds for the Central Universities(No.56XIA15003)a project funded by the Priority Academic Program Development of Jiangsu Higher Education Institution(PAPD)
文摘A novel nonprecious metal material consisting of Coembedded porous interconnected multichannel carbon nanofibers(Co/IMCCNFs) was rationally designed for oxygen reduction reaction(ORR)electrocatalysis.In the synthesis,ZnCo2O4 was employed to form interconnected mesoporous channels and provide highly active Co3O4/Co core–shell nanoparticle-based sites for the ORR.The IMC structure with a large synergistic effect of the N and Co active sites provided fast ORR electrocatalysis kinetics.The Co/IMCCNFs exhibited a high half-wave potential of 0.82 V(vs.reversible hydrogen electrode) and excellent stability with a current retention up to 88% after 12,000 cycles in a current–time test,which is only 55% for 30 wt% Pt/C.
基金supported by the Beijing Natural Science Foundation(Commission No.7162038)the Beijing Municipal Administration of Hospitals’Youth Program(Commission No.QML20161101)
文摘Objective： Although superior clinical benefits of epidermal growth factor receptor （EGFR） tyrosine kinase inhibitors （TKIs） in the treatment of advanced non-small-cell lung cancer （NSCLC） had been reported, the survival difference between exon 19 deletion （Dell9） and exon 21 Leu858Arg substitution （L858R） remains controversial. The purpose of this study is to investigate the differences in progression-free survival （PFS） and overall survival （OS） between different EGFR mutant subtypes among advanced NSCLC patients receiving gefitinib. Methods： There were 204 advanced NSCLC patients with EGFR mutations treated with gefitinib were enrolled in this retrospective cohort study. Patients were divided into the EGFR Dell9 group and the L858R mutated group according to their mutant subtype. Propensity score matching （PSM） was conducted by using a nearest-neighbor algorithm （1：1） to adjust for demographical and clinical covariates. Survival curves were constructed with the Kaplan-Meier method and compared by using the log-rank test. Results： The PFS in Dell9 group was similar to that in the L858R group [before PSM 8.6 vs. 7.2 months, P=0.072; after PSM 7.3 vs. 7.2 months, P=0.155]. No differences were detected in OS between the L858R and the Dell9 group （before PSM 17.8 vs. 13.1 months, P=0.253; after PSM 16.9 vs. 13.1 months, P=0.339）. The Dell9 group was significantly younger compared with the L858R mutation group in age （P=0.015）. Conclusions： No significant difference was found in the PFS or OS between the Dell9 and L858R mutant NSCLC patients receiving gefitinib. The age gap might contribute to the survival differences between Dell9 and L858R groups. PSM is of important value to the elimination of potential bias.
文摘Synchronous breast cancer and breast lymphoma are rare. It is of high rate of misdiagnosis in clinical practice. Here we present two cases with this presentation. They are both middle-aged women, with stage I invasive ductal carcinoma of the breast. One patient happened to have primary breast lymphoma （PBL）; the other was secondary breast lymphoma （SBL）. Their pathology and immunohistochemistry （IHC） findings supported the diagnosis of multiple primary carcinoma. Both patients had a surgery. Then they both received CHOP regime chemotherapy and subsequent endocrine therapy.
基金supported by the National Natural Science Foundation of China(21273114,21771107)Natural Science Foundation of Jiangsu Province(BK20161484)+3 种基金the Fundamental Research Funds for the Central Universities(NE2015003)the "Six Talent Peaks Program" of Jiangsu Province(2013-XNY-010)Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutionthe Foundation of Graduate Innovation Center in NUAA(kfjj20160613)~~
文摘目的:观察含莫西沙星(Mfx)和含左氧氟沙星(Lfx)方案治疗MDR-TB的疗效和安全性,为临床用药提供指导。方法:选取2012年1月至2014年6月期间兰州市肺科医院收治的85例耐多药肺结核患者作为研究对象。将所有患者按随机数字表法分为治疗组43例,对照组42例,治疗组服用含M f x的治疗方案进行治疗,对照组含L f x的方案进行治疗,两组除M f x和L f x外,方案中其他用药均相同。比较分析两组不同时间痰菌阴转率、影像学表现及治疗前后的相关不良反应。采用SPSS17.0软件进行数据分析,计量资料采用t检验,计数资料采用χ~2检验,P<0.05表示差异具有统计学意义。结果:治疗组失访2例,对照组失访1例,最终治疗3、6、12、18、24个月末含Mfx组阴转率(56.10%,23/41;78.05%,32/41;85.37%,35/41;87.80%,36/41;87.80%,36/41)高于含Lfx组(32.50%,13/40;55.00%,22/40;65.00%,26/40;70.00%,28/40;70.00%,28/40),差异有统计学意义(χ~2值分别为3.98、4.84、3.94、3.87、3.87,P值均<0.05);治疗结束后胸片病灶吸收率和空洞缩小率治疗组均高于对照组,分别为90.24%,37/41;75.00%;30/40和87.80%,36/41;67.50%,27/40。胸片病灶吸收率差异无统计学意义(χ~2=3.291,P>0.05)。空洞缩小率差异有统计学意义(χ~2=4.83,P<0.05)。结论:含莫西沙星方案治疗耐多药患者疗效优于含左氧氟沙星方案。
文摘Based on core and casting slice observation, well drilling and logging data, the source of carbonate materials, lithology together with electric properties, types, genesis mechanism and distribution of calcareous interbeds in Songtao uplift and its periphery of Qiongdongnan Basin have been thoroughly analyzed. Results show that typical features have been appeared from well logging curves, containing low gamma-ray, low acoustic travel time, low neutron value, high density, as well as bright white calcium nodules or bands in electrical imaging well-logging curves. Drilling results reveal that calcareous interbeds developed mostly in high position of paleostructures and their distribution was controlled by the combined effects of macroscopic and microscopic factors. Macroscopically, calcareous interbeds relate to paleogeomorphology together with the combination of sandstone and mudstone. They are also controlled microscopically by the source of carbonate cements and pore space. Under normal circumstances, with regard to the same sand, the closer to the mudstone and the thicker of mudstone, the more conducive to the formation of calcareous interlayer. Low compaction strength, high content of rigid particles, coarse grain size, well-sorted sandstone and large pore space during carbonate cementation are favorable for the development of calcareous interbeds.
