As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO_(2)(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting t...As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO_(2)(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting the mechanical strains and alleviating phase degradation upon cycling.Hereinafter,we propose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi_(0.1)Co_(0.9)O_(2)(LNCO)with tailorable electrochemical properties.The rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700℃(LNCO-700)outperforms its counterparts in cyclability(156.8 mA h g^(-1)at 1 C for 200 cycles in half cells,1 C=275 mA g^(-1))and rate capability due to the expedited ion/electron transport and the strengthen mechanical robustness.The feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g^(-1)at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structu re,ameliorated electro nic co nductivity,a nd exalted lithium sto rage activity.This work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application.展开更多
Background:Four classical Traditional Chinese Medicine prescriptions,namely Gualou Xiebai Baijiu decoction,Gualou Xiebai Banxia decoction(GLXBBX),Zhishi Xiebai Guizhi decoction(ZSXBGZ)and Danlou prescription(DL),have ...Background:Four classical Traditional Chinese Medicine prescriptions,namely Gualou Xiebai Baijiu decoction,Gualou Xiebai Banxia decoction(GLXBBX),Zhishi Xiebai Guizhi decoction(ZSXBGZ)and Danlou prescription(DL),have been frequently used for treatment of phlegm and blood stasis syndrome(PBSS)-related cardiovascular diseases.However,its therapeutic mechanism has not been clearly elucidated.This study aimed to explore PBSS and its molecular mechanism,clarify and compare the mechanisms of four prescriptions in treating PBSS-related diseases.Method:In this study,we collected four prescriptions’compounds,predicted therapeutic targets,and enriched pathways which were based on network pharmacology.Then,we analysed the commen and different mechanisms by combing the network of components,targets and pathways.Finally,molecular docking was engaged to assess the binding potential of key compounds and hub targets.Results:We showed that four prescriptions’intersection genes(VEGFA,SRC,EGFR,etc.)were commonly enriched in PI3K-AKT signaling pathway,HIF-1 signaling pathway,etc.In addition,platelet activation and cAMP signaling pathway were singly enriched from the GLXBBX through unique compounds 12,13-epoxy-9-hydroxynonadeca-7,10-dienoic acid and Cyclo(L-tyrosyl-L-phenylalanyl).These bioactive compounds may exert GLXBBX’s unique pharmacological pathways via involving in mediating PPARA,PTGER3,etc.Sphingolipid signaling pathway was singly enriched from the ZSXBGZ through unique compounds tetramethoxyluteolin,ergosterol peroxide,etc.These bioactive compounds could mediate ADORA1,ADORA3 and TNFRSF1A to regulate ZSXBGZ’s unique pharmacological pathways.AMPK signaling pathway was singly enriched from the DL through unique compounds kaempferol,evofolinb,ethyl acid and aureusidin.These bioactive compounds were involved in mediating the main targets of AMPK signaling pathway,such as TNF,TNFRSF1A,etc.Conclusions:Our research demonstrated that GLXB-prescriptions involved in almost all pathological stages of PBSS-related cardiovascular diseases by modulating high-frequency shared pathways and targets mainly through key compounds(quercetin,mandenol,sitosteryl acetate and luteolin,etc.),for example,participate in the process of atherosclerosis,lipid metabolism,inflammation,immune response,thrombosis,inhibit inflammatory factors and platelet aggregation,regulate immune function,vascular function,oxidative stress.In addition to common pharmacological efficacies,there could also be specificities among GLXB prescriptions due to different compounds.For example,GLXBBX tends to regulate the function of vascular and endothelial barrier,prevent thrombosis.ZSXBGZ tends to regulate lipid metabolism and protect the heart from lipid accumulation.DL tends to maintain energy homeostasis and improve inflammation.展开更多
AIM:To investigate the effects of carbon dioxide (CO2) and helium insufflation administered at different pressures on the growth and apoptosis of cultured human gastric cancer cells. METHODS:The gastric cancer cells M...AIM:To investigate the effects of carbon dioxide (CO2) and helium insufflation administered at different pressures on the growth and apoptosis of cultured human gastric cancer cells. METHODS:The gastric cancer cells MKN-45 were exposed to a CO2 and helium environment maintained at different pressures (0, 5, 10 and 15 mmHg). The cells were exposed to simulated pneumoperitoneum environment for 4 h, and pH of the culture media was measured after it was moved to normal conditions for 0, 2, 4, 6 and 8 h. Proliferation viability of MKN-45 was examined by 3-4,5Dimethylthiazol-2-yl,5-diphenyltetrazolium bromide or triazolyl blue (MTT) assay after it was moved to normal conditions. Apoptotic ratio was measured by Annexin V-FITC/PI double labelled staining. RESULTS:The pH of media was acid and recovered to normal after 4 h in the CO2 group while it was basic in the helium group. There was no difference between CO2 groups (under 10 mmHg ) and control group (P > 0.05) in the proliferative viability of the cells. The cultured cells exposed to 15 mmHg CO2 environment grew more slowly than control group from 4 to 7 d (P < 0.01 ) while there was no difference from 1 to 3 d (P > 0.05). The proliferative viability in helium group was not obviously different from the control group (P > 0.05). The apoptotic ratio of the cultured cells was markedly higher than that of the control group (P < 0.01) at 10 and 15 mmHg CO2 insufflation pressure. In helium group, the apoptotic ratio was not obviously different from the control group (P > 0.05). CONCLUSION:There is no obvious effect in the proliferation and apoptosis of MKN-45 cells under 10 mmHg CO2 insufflation pressure and helium in any pressure. Fifteen mmHg CO2 insufflation pressure can inhibit the proliferation of the cells and improve apoptosis.展开更多
AIM: To determine the effect of pirfenidone on the activated human Müller cells by platelet-derived growth factor-BB(PDGF-BB). METHODS: The primary human Müller cells were separated from retinal tissues and ...AIM: To determine the effect of pirfenidone on the activated human Müller cells by platelet-derived growth factor-BB(PDGF-BB). METHODS: The primary human Müller cells were separated from retinal tissues and established the pathogenic model by stimulated with PDGF-BB. The Müller cells behaviour of normal group and the model group was measured by MTT assay, Trypan blue assay, cell migration assay, and collagen contraction assay. The expression of transforming growth factor(TGF)-β1,-β2, and pigment epithelium-derived factor(PEDF) was estimated with realtime polymerase chain reaction(PCR), Western blot and immunofluorescence analyses. RESULTS: A pathogenic/proliferative model of Müller cells was established by stimulating normal cultured Müller cells with 10 ng/mL PDGF-BB for 48 h. After treated with 0.2 and 0.3 mg/mL pirfenidone, the proliferation, migration and collagen contraction was statistically significantly depressed in the model group compared with the normal groups. The expression levels of TGF-β1 and TGF-β2 were significantly down-regulated, while the PEDF expression was significantly up-regulated after treated with 0.2 and 0.3 mg/mL pirfenidone in the model group. CONCLUSION: Pirfenidone effectively suppress the proliferation, migration and collagen contraction of the human Müller cells stimulated with PDGF-BB through down-regulation of TGF-β1/TGF-β2 and up-regulation of PEDF.展开更多
Objective To explore the relationship between polymorphisms of XbaI and MspI loci of apolipoprotein B （ApoB） gene and -75 bp,＋83 bp loci of apolipoprotein AI （ApoAI） gene and coronary heart disease （CHD） in Kaz...Objective To explore the relationship between polymorphisms of XbaI and MspI loci of apolipoprotein B （ApoB） gene and -75 bp,＋83 bp loci of apolipoprotein AI （ApoAI） gene and coronary heart disease （CHD） in Kazaks of Xinjiang Uyghur Autonomous Region,China.Methods These loci were analyzed by PCR-restriction fragment length polymorphism （PCR-PFLP）.Two hundred and five patients with CHD and two hundred and thirty six controls were involved.Results There were significant distinctions among low-density lipoprotein cholesterol （LDL-C）,triglyceride （TG） and the ApoAI/ApoB ratio between the two groups,but no significant distinction among the polymorphism frequencies of the four sites between the two groups.The polymorphism coalition frequency of X-/Ms＋＋/M1＋-/M2＋＋ （named Coalition 11） was significantly higher in CHD compared to the control group （14.6％ vs.7.2％,P ＜ 0.05）.The level of total cholesterol （TC） in Coalition 1 1 was significantly higher and the level of the ApoAI/ApoB ratio in Coalition 11 was significantly lower than Coalition 1～10 in CHD patients.The level of the ApoAI/ApoB ratio of Coalition 11 was significantly lower than the Coalition 1～10 in control group.The levels of ApoAI/ApoB ratio of Coalition 3 were significantly higher compared to Coalition 11 in the two groups,respectively.The level of LDL-C of Coalition 3 was significantly lower than in the Coalition 11 in control group.The level of TC of Coalition 5 was significantly higher than Coalition 3 in the CHD group.The level of the ApoAI/ApoB ratio of Coalition 5 was significantly lower than in Coalition 3 or Coalition 1～10 of the two groups,respectively.The level of LDL-C of Coalition 5 was significantly higher than in Coalition 3 in control group.The ratio of ApoAI/ApoB was negatively related to TC,LDL-C and was positively related to HDL-C,both in CHD and control groups.Conclusion Coalition 11 of the 4 loci polymorphisms of the ApoB and ApoAI genes was correlated with CHD in Kazaks,and perhaps the ratio of ApoAI/ApoB was the most diagnostic parameter related with CHD among all lipid parameters.CHD may also be associated with Coalition 5,and,perhaps,Coalition 3 may have been confirmed as a protection factor against CHD,if more samples were enrolled.展开更多
ZrO2 dispersion-strengthened Q345 steel with different ZrO2 contents（0%, 0.5% and 1.2%, mass fraction） was fabricated through combining middle frequency induction furnace melting and cored-wire injection technologie...ZrO2 dispersion-strengthened Q345 steel with different ZrO2 contents（0%, 0.5% and 1.2%, mass fraction） was fabricated through combining middle frequency induction furnace melting and cored-wire injection technologies. The microstructure and fracture surface morphology of ZrO2 dispersion-strengthened Q345 steel in casting, normalizing and quenching states were observed using optical microscopy, scanning electron microscopy and transmission electron microscopy. Also, strengthening and fracture mechanisms of the alloys were analyzed. Results showed that the dispersed ZrO2 particles added into Q345 matrix significantly enhanced its strength, and the main strengthening mechanism was the formation of dislocation cells and pinning effect caused by the addition of ZrO2 particles. Apart from that, the hard martensite phase, grain refinement and high ZrO2 particles content also played important roles in strengthening effect. Furthermore, the nanoindentation was also performed to further reveal the strengthening effect and mechanism of dispersed ZrO2 particles in Q345 steel. Results showed that the hardness of ZrO2 dispersion-strengthened Q345 steel increased with the increase of ZrO2 content.展开更多
基金the financial support from the Special Funds for the Cultivation of Guangdong College Students’Scientific and Technological Innovation(“Climbing Program”Special Funds,pdjh2023b0145)Guangdong Provincial International Joint Research Center for Energy Storage Materials(2023A0505090009)。
文摘As a prevailing cathode material of lithium-ion batteries(LIBs),LiCoO_(2)(LCO)still encounters the tricky problems of structural collapse,whose morphological engineering and cation doping are crucial for surmounting the mechanical strains and alleviating phase degradation upon cycling.Hereinafter,we propose a strategy using a zeolitic imidazolate framework(ZIF)as the self-sacrificing template to directionally prepare a series of LiNi_(0.1)Co_(0.9)O_(2)(LNCO)with tailorable electrochemical properties.The rational selection of sintering temperature imparts the superiority of the resultant products in lithium storage,during which the sample prepared at 700℃(LNCO-700)outperforms its counterparts in cyclability(156.8 mA h g^(-1)at 1 C for 200 cycles in half cells,1 C=275 mA g^(-1))and rate capability due to the expedited ion/electron transport and the strengthen mechanical robustness.The feasibility of proper Ni doping is also divulged by half/full cell tests and theoretical study,during which LNCO-700(167 mA h g^(-1)at 1 C for 100 cycles in full cells)surpasses LCO-700 in battery performance due to the mitigated phase deterioration,stabilized layered structu re,ameliorated electro nic co nductivity,a nd exalted lithium sto rage activity.This work systematically unveils tailorable electrochemical behaviors of LNCO to better direct their practical application.
基金supportes by National Natural Science Foundation of China(Grant no.82274137,81873038)Natural Science Foundation of Anhui Province(2208085MH275)+2 种基金Natural Science Research Project of Anhui Provincial Department of Education(KJ2021A0592)Anhui University Scientific Research Project(YJS20210488)the 7th China International College Studengts“Internet+”Innovation and entrepreneurship Competition(S202110369046).
文摘Background:Four classical Traditional Chinese Medicine prescriptions,namely Gualou Xiebai Baijiu decoction,Gualou Xiebai Banxia decoction(GLXBBX),Zhishi Xiebai Guizhi decoction(ZSXBGZ)and Danlou prescription(DL),have been frequently used for treatment of phlegm and blood stasis syndrome(PBSS)-related cardiovascular diseases.However,its therapeutic mechanism has not been clearly elucidated.This study aimed to explore PBSS and its molecular mechanism,clarify and compare the mechanisms of four prescriptions in treating PBSS-related diseases.Method:In this study,we collected four prescriptions’compounds,predicted therapeutic targets,and enriched pathways which were based on network pharmacology.Then,we analysed the commen and different mechanisms by combing the network of components,targets and pathways.Finally,molecular docking was engaged to assess the binding potential of key compounds and hub targets.Results:We showed that four prescriptions’intersection genes(VEGFA,SRC,EGFR,etc.)were commonly enriched in PI3K-AKT signaling pathway,HIF-1 signaling pathway,etc.In addition,platelet activation and cAMP signaling pathway were singly enriched from the GLXBBX through unique compounds 12,13-epoxy-9-hydroxynonadeca-7,10-dienoic acid and Cyclo(L-tyrosyl-L-phenylalanyl).These bioactive compounds may exert GLXBBX’s unique pharmacological pathways via involving in mediating PPARA,PTGER3,etc.Sphingolipid signaling pathway was singly enriched from the ZSXBGZ through unique compounds tetramethoxyluteolin,ergosterol peroxide,etc.These bioactive compounds could mediate ADORA1,ADORA3 and TNFRSF1A to regulate ZSXBGZ’s unique pharmacological pathways.AMPK signaling pathway was singly enriched from the DL through unique compounds kaempferol,evofolinb,ethyl acid and aureusidin.These bioactive compounds were involved in mediating the main targets of AMPK signaling pathway,such as TNF,TNFRSF1A,etc.Conclusions:Our research demonstrated that GLXB-prescriptions involved in almost all pathological stages of PBSS-related cardiovascular diseases by modulating high-frequency shared pathways and targets mainly through key compounds(quercetin,mandenol,sitosteryl acetate and luteolin,etc.),for example,participate in the process of atherosclerosis,lipid metabolism,inflammation,immune response,thrombosis,inhibit inflammatory factors and platelet aggregation,regulate immune function,vascular function,oxidative stress.In addition to common pharmacological efficacies,there could also be specificities among GLXB prescriptions due to different compounds.For example,GLXBBX tends to regulate the function of vascular and endothelial barrier,prevent thrombosis.ZSXBGZ tends to regulate lipid metabolism and protect the heart from lipid accumulation.DL tends to maintain energy homeostasis and improve inflammation.
基金The "11th Five-Year" Program of People’s Liberation Army of China (PLA), No. 06MB240
文摘AIM:To investigate the effects of carbon dioxide (CO2) and helium insufflation administered at different pressures on the growth and apoptosis of cultured human gastric cancer cells. METHODS:The gastric cancer cells MKN-45 were exposed to a CO2 and helium environment maintained at different pressures (0, 5, 10 and 15 mmHg). The cells were exposed to simulated pneumoperitoneum environment for 4 h, and pH of the culture media was measured after it was moved to normal conditions for 0, 2, 4, 6 and 8 h. Proliferation viability of MKN-45 was examined by 3-4,5Dimethylthiazol-2-yl,5-diphenyltetrazolium bromide or triazolyl blue (MTT) assay after it was moved to normal conditions. Apoptotic ratio was measured by Annexin V-FITC/PI double labelled staining. RESULTS:The pH of media was acid and recovered to normal after 4 h in the CO2 group while it was basic in the helium group. There was no difference between CO2 groups (under 10 mmHg ) and control group (P > 0.05) in the proliferative viability of the cells. The cultured cells exposed to 15 mmHg CO2 environment grew more slowly than control group from 4 to 7 d (P < 0.01 ) while there was no difference from 1 to 3 d (P > 0.05). The proliferative viability in helium group was not obviously different from the control group (P > 0.05). The apoptotic ratio of the cultured cells was markedly higher than that of the control group (P < 0.01) at 10 and 15 mmHg CO2 insufflation pressure. In helium group, the apoptotic ratio was not obviously different from the control group (P > 0.05). CONCLUSION:There is no obvious effect in the proliferation and apoptosis of MKN-45 cells under 10 mmHg CO2 insufflation pressure and helium in any pressure. Fifteen mmHg CO2 insufflation pressure can inhibit the proliferation of the cells and improve apoptosis.
文摘AIM: To determine the effect of pirfenidone on the activated human Müller cells by platelet-derived growth factor-BB(PDGF-BB). METHODS: The primary human Müller cells were separated from retinal tissues and established the pathogenic model by stimulated with PDGF-BB. The Müller cells behaviour of normal group and the model group was measured by MTT assay, Trypan blue assay, cell migration assay, and collagen contraction assay. The expression of transforming growth factor(TGF)-β1,-β2, and pigment epithelium-derived factor(PEDF) was estimated with realtime polymerase chain reaction(PCR), Western blot and immunofluorescence analyses. RESULTS: A pathogenic/proliferative model of Müller cells was established by stimulating normal cultured Müller cells with 10 ng/mL PDGF-BB for 48 h. After treated with 0.2 and 0.3 mg/mL pirfenidone, the proliferation, migration and collagen contraction was statistically significantly depressed in the model group compared with the normal groups. The expression levels of TGF-β1 and TGF-β2 were significantly down-regulated, while the PEDF expression was significantly up-regulated after treated with 0.2 and 0.3 mg/mL pirfenidone in the model group. CONCLUSION: Pirfenidone effectively suppress the proliferation, migration and collagen contraction of the human Müller cells stimulated with PDGF-BB through down-regulation of TGF-β1/TGF-β2 and up-regulation of PEDF.
文摘Objective To explore the relationship between polymorphisms of XbaI and MspI loci of apolipoprotein B （ApoB） gene and -75 bp,＋83 bp loci of apolipoprotein AI （ApoAI） gene and coronary heart disease （CHD） in Kazaks of Xinjiang Uyghur Autonomous Region,China.Methods These loci were analyzed by PCR-restriction fragment length polymorphism （PCR-PFLP）.Two hundred and five patients with CHD and two hundred and thirty six controls were involved.Results There were significant distinctions among low-density lipoprotein cholesterol （LDL-C）,triglyceride （TG） and the ApoAI/ApoB ratio between the two groups,but no significant distinction among the polymorphism frequencies of the four sites between the two groups.The polymorphism coalition frequency of X-/Ms＋＋/M1＋-/M2＋＋ （named Coalition 11） was significantly higher in CHD compared to the control group （14.6％ vs.7.2％,P ＜ 0.05）.The level of total cholesterol （TC） in Coalition 1 1 was significantly higher and the level of the ApoAI/ApoB ratio in Coalition 11 was significantly lower than Coalition 1～10 in CHD patients.The level of the ApoAI/ApoB ratio of Coalition 11 was significantly lower than the Coalition 1～10 in control group.The levels of ApoAI/ApoB ratio of Coalition 3 were significantly higher compared to Coalition 11 in the two groups,respectively.The level of LDL-C of Coalition 3 was significantly lower than in the Coalition 11 in control group.The level of TC of Coalition 5 was significantly higher than Coalition 3 in the CHD group.The level of the ApoAI/ApoB ratio of Coalition 5 was significantly lower than in Coalition 3 or Coalition 1～10 of the two groups,respectively.The level of LDL-C of Coalition 5 was significantly higher than in Coalition 3 in control group.The ratio of ApoAI/ApoB was negatively related to TC,LDL-C and was positively related to HDL-C,both in CHD and control groups.Conclusion Coalition 11 of the 4 loci polymorphisms of the ApoB and ApoAI genes was correlated with CHD in Kazaks,and perhaps the ratio of ApoAI/ApoB was the most diagnostic parameter related with CHD among all lipid parameters.CHD may also be associated with Coalition 5,and,perhaps,Coalition 3 may have been confirmed as a protection factor against CHD,if more samples were enrolled.
基金Projects(51671166,51434008)supported by the National Natural Science Foundation of ChinaProject(2013CB733000)supported by the National Basic Research Program of China
文摘ZrO2 dispersion-strengthened Q345 steel with different ZrO2 contents（0%, 0.5% and 1.2%, mass fraction） was fabricated through combining middle frequency induction furnace melting and cored-wire injection technologies. The microstructure and fracture surface morphology of ZrO2 dispersion-strengthened Q345 steel in casting, normalizing and quenching states were observed using optical microscopy, scanning electron microscopy and transmission electron microscopy. Also, strengthening and fracture mechanisms of the alloys were analyzed. Results showed that the dispersed ZrO2 particles added into Q345 matrix significantly enhanced its strength, and the main strengthening mechanism was the formation of dislocation cells and pinning effect caused by the addition of ZrO2 particles. Apart from that, the hard martensite phase, grain refinement and high ZrO2 particles content also played important roles in strengthening effect. Furthermore, the nanoindentation was also performed to further reveal the strengthening effect and mechanism of dispersed ZrO2 particles in Q345 steel. Results showed that the hardness of ZrO2 dispersion-strengthened Q345 steel increased with the increase of ZrO2 content.
