The changes of proto-oncogene c-fos and c-jun mRNA expression in angiotensin Ⅱ （AngⅡ）-induced hypertrophy and effects of sodium tanshinone ⅡA sulfonate （STS） in the primary culture of neonatal rat cardiomyocyte...The changes of proto-oncogene c-fos and c-jun mRNA expression in angiotensin Ⅱ （AngⅡ）-induced hypertrophy and effects of sodium tanshinone ⅡA sulfonate （STS） in the primary culture of neonatal rat cardiomyocytes were investigated. Twelve neonatal clean grade Wistar rats were selected. The cardiomyocytes were isolated, cultured and divided according to different treatments in the medium. The cardiomyocyte size was determined by phase contrast microscope, and the rate of protein synthesis was measured by [3H]-Leucine incorporation. The c-fos and c-jun mRNA expression in cardiomyocytes was detected by reverse transcription polymerase chain reaction （RT-PCR）. It was found after cardiomyocytes were treated with AngⅡ for 30 min, the c-fos and c-jun mRNA expression in cardiomyocytes was increased significantly （P〈0.01）. After treatment with AngⅡ for 24 h, the rate of protein synthesis in AngⅡ group was significantly increased as compared with control group （P〈0.01）. After treatment with AngⅡ for 7 days, the size of cardiomyocytes in AngⅡ group was increased obviously as compared with control group （P〈0.05）. After pretreatment with STS or Valsartan before AngⅡ treatment, both of them could inhibit the above effects of AngⅡ （P〈0.05 or P〈0.01）. It was suggested that STS could ameliorate AngⅡ-induced cardiomyocyte hy- pertrophy by inhibiting c-fos and c-jun mRNA expression and reducing protein synthesis rate of cardiomyocytes.展开更多
To explore the protective effect of sodium tanshinone ⅡA sulfonate（STS） on microcirculatory disturbance of small intestine in rats with sepsis,and the possible mechanism,a rat model of sepsis was induced by cecal l...To explore the protective effect of sodium tanshinone ⅡA sulfonate（STS） on microcirculatory disturbance of small intestine in rats with sepsis,and the possible mechanism,a rat model of sepsis was induced by cecal ligation and puncture（CLP）.Rats were randomly divided into 3 groups：sham operated group（S）,sepsis group（CLP） and STS treatment group（STS）.STS（1 mg/kg） was slowly injected through the right external jugular vein after CLP.The histopathologic changes in the intestinal tissue and changes of mesenteric microcirculation were observed.The levels of tumor necrosis factor-α（TNF-α） in the intestinal tissue were determined by using enzyme-linked immunoabsorbent assay（ELISA）.The expression of intercellular adhesion molecule-1（ICAM-1） in the intestinal tissue was detected by using immunohistochemisty and Western blot,that of nuclear factor κB（NF-κB） and tissue factor（TF） by using Western blot,and the levels of NF-κB mRNA expression by using RT-PCR respectively.The microcirculatory disturbance of the intestine was aggravated after CLP.The injury of the intestinal tissues was obviously aggravated in CLP group as compared with S group.The expression levels of NF-κB p65,ICAM-1,TF and TNF-α were upregulaed after CLP（P0.01）.STS post-treatment could ameliorate the microcirculatory disturbance,attenuate the injury of the intestinal tissues induced by CLP,and decrease the levels of NF-κB,ICAM-1,TF and TNF-α（P0.01）.It is suggested that STS can ameliorate the microcirculatory disturbance of the small intestine in rats with sepsis,and the mechanism may be associated with the inhibition of inflammatory responses and amelioration of coagulation abnormality.展开更多
The calcium binding of erythrocyte membrane was determined in spontaneous hypertensiverats (SHR)and renovascular hypertensive rats (RVHR two-kidney, one-clip model) and the effect ofsodium tanshinone Ⅱ-A sulfonate(DS...The calcium binding of erythrocyte membrane was determined in spontaneous hypertensiverats (SHR)and renovascular hypertensive rats (RVHR two-kidney, one-clip model) and the effect ofsodium tanshinone Ⅱ-A sulfonate(DS-201)on the calcium binding in SHRs was investigated. Ourresults show that the basal calcium binding was reduced in SHRs (P<0.01 vs WKY),while the maximalcalcium binding was not,but both typies calcium bindings had no significant change in RVHRs.Sodiumtanshinone Ⅱ-A sulfonate (125μ mol/L)have no effect on the calcium binding of ecythrocyte membraneof SHR in vitro.These data further support the hypothesis that there is a cell membrane abnormalitypresent in SHRs which may possibly serve as a marker genetics of in hypertension.展开更多
In this paper,a novel material for Co(Ⅱ)adsorption,titanate sodium nanotubes(Na_2Ti_2O_5-NTs)were synthesized and characterized,and then they were used to remove Co(Ⅱ) from aqueous solution and compared with titanic...In this paper,a novel material for Co(Ⅱ)adsorption,titanate sodium nanotubes(Na_2Ti_2O_5-NTs)were synthesized and characterized,and then they were used to remove Co(Ⅱ) from aqueous solution and compared with titanic acid nanotubes(H_2Ti_2O_5-NTs) and potassium hexatitanate whiskers(K_2Ti_6O_(13)).The results showed that the adsorption of Co(Ⅱ) on the materials was dependent on p H values and was a spontaneous,endothermic process.Specifically,Na_2Ti_2O_5-NTs exhibited much more efficient ability to adsorb Co(Ⅱ) from aqueous solution,with the maximum adsorption capacity of 85.25 mg/g.Furthermore,Na_2Ti_2O_5-NTs could selectively adsorb Co(Ⅱ) from aqueous solution containing coexisting ions(Na^+,K^+,Mg^(2+),and Ca^(2+)).The results suggested that Na_2Ti_2O_5-NTs were potential effective adsorbents for removal of Co(Ⅱ) or cobalt-60 from wastewater.展开更多
目的:观察干眼熏蒸联合环孢素滴眼液(Ⅱ)及玻璃酸钠滴眼液治疗混合型干眼症的效果。方法:选取2021年9月—2023年12月南昌爱尔眼科医院收治的干眼症患者100例,采用随机数字表法将患者分为常规组和联合组,每组50例。常规组采用干眼熏蒸联...目的:观察干眼熏蒸联合环孢素滴眼液(Ⅱ)及玻璃酸钠滴眼液治疗混合型干眼症的效果。方法:选取2021年9月—2023年12月南昌爱尔眼科医院收治的干眼症患者100例,采用随机数字表法将患者分为常规组和联合组,每组50例。常规组采用干眼熏蒸联合玻璃酸钠滴眼液治疗,联合组采用干眼熏蒸联合环孢素滴眼液(Ⅱ)及玻璃酸钠滴眼液治疗,均治疗1个月。比较两组治疗效果、泪膜破裂时间(breakup time of tear film,BUT)、角膜荧光素染色(fluorescent staining,FL)、泪河高度(tear meniscus height,TMH)、泪液分泌试验(SchirmerⅠtest,SⅠt)、干眼症状评分、不良反应发生率。结果:联合组治疗总有效率高于常规组(P<0.05)。与治疗前比较,治疗1个月后两组BUT均延长,角膜FL评分均降低,联合组BUT长于常规组,角膜FL评分低于常规组(P<0.05)。与治疗前比较,治疗1个月后两组TMH均升高,SⅠt均延长,联合组TMH高于常规组,SⅠt长于常规组(P<0.05)。与治疗前比较,治疗2周、1个月后两组干眼症状评分均降低,联合组干眼症状评分均低于常规组(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论:干眼熏蒸联合环孢素滴眼液(Ⅱ)及玻璃酸钠滴眼液治疗混合型干眼症,能够提高治疗总有效率,改善干眼症状,提高泪膜稳定性。展开更多
基金a grant from National Natural Sciences Foundation of China (No. 30500657)
文摘The changes of proto-oncogene c-fos and c-jun mRNA expression in angiotensin Ⅱ （AngⅡ）-induced hypertrophy and effects of sodium tanshinone ⅡA sulfonate （STS） in the primary culture of neonatal rat cardiomyocytes were investigated. Twelve neonatal clean grade Wistar rats were selected. The cardiomyocytes were isolated, cultured and divided according to different treatments in the medium. The cardiomyocyte size was determined by phase contrast microscope, and the rate of protein synthesis was measured by [3H]-Leucine incorporation. The c-fos and c-jun mRNA expression in cardiomyocytes was detected by reverse transcription polymerase chain reaction （RT-PCR）. It was found after cardiomyocytes were treated with AngⅡ for 30 min, the c-fos and c-jun mRNA expression in cardiomyocytes was increased significantly （P〈0.01）. After treatment with AngⅡ for 24 h, the rate of protein synthesis in AngⅡ group was significantly increased as compared with control group （P〈0.01）. After treatment with AngⅡ for 7 days, the size of cardiomyocytes in AngⅡ group was increased obviously as compared with control group （P〈0.05）. After pretreatment with STS or Valsartan before AngⅡ treatment, both of them could inhibit the above effects of AngⅡ （P〈0.05 or P〈0.01）. It was suggested that STS could ameliorate AngⅡ-induced cardiomyocyte hy- pertrophy by inhibiting c-fos and c-jun mRNA expression and reducing protein synthesis rate of cardiomyocytes.
基金supported by a grant from Natural Sciences Foundation of Hubei Province,China (No. 2009CDB371)
文摘To explore the protective effect of sodium tanshinone ⅡA sulfonate（STS） on microcirculatory disturbance of small intestine in rats with sepsis,and the possible mechanism,a rat model of sepsis was induced by cecal ligation and puncture（CLP）.Rats were randomly divided into 3 groups：sham operated group（S）,sepsis group（CLP） and STS treatment group（STS）.STS（1 mg/kg） was slowly injected through the right external jugular vein after CLP.The histopathologic changes in the intestinal tissue and changes of mesenteric microcirculation were observed.The levels of tumor necrosis factor-α（TNF-α） in the intestinal tissue were determined by using enzyme-linked immunoabsorbent assay（ELISA）.The expression of intercellular adhesion molecule-1（ICAM-1） in the intestinal tissue was detected by using immunohistochemisty and Western blot,that of nuclear factor κB（NF-κB） and tissue factor（TF） by using Western blot,and the levels of NF-κB mRNA expression by using RT-PCR respectively.The microcirculatory disturbance of the intestine was aggravated after CLP.The injury of the intestinal tissues was obviously aggravated in CLP group as compared with S group.The expression levels of NF-κB p65,ICAM-1,TF and TNF-α were upregulaed after CLP（P0.01）.STS post-treatment could ameliorate the microcirculatory disturbance,attenuate the injury of the intestinal tissues induced by CLP,and decrease the levels of NF-κB,ICAM-1,TF and TNF-α（P0.01）.It is suggested that STS can ameliorate the microcirculatory disturbance of the small intestine in rats with sepsis,and the mechanism may be associated with the inhibition of inflammatory responses and amelioration of coagulation abnormality.
文摘The calcium binding of erythrocyte membrane was determined in spontaneous hypertensiverats (SHR)and renovascular hypertensive rats (RVHR two-kidney, one-clip model) and the effect ofsodium tanshinone Ⅱ-A sulfonate(DS-201)on the calcium binding in SHRs was investigated. Ourresults show that the basal calcium binding was reduced in SHRs (P<0.01 vs WKY),while the maximalcalcium binding was not,but both typies calcium bindings had no significant change in RVHRs.Sodiumtanshinone Ⅱ-A sulfonate (125μ mol/L)have no effect on the calcium binding of ecythrocyte membraneof SHR in vitro.These data further support the hypothesis that there is a cell membrane abnormalitypresent in SHRs which may possibly serve as a marker genetics of in hypertension.
基金supported by the Applied Basic Research Programs Funded Project of Sichuan Province(No 2012JY0100)National Natural Science Foundation and China Academy of Engineering Physics joint fund(No U1330125)the National Fund of China for Fostering Talents in Basic Science(J1210004)
文摘In this paper,a novel material for Co(Ⅱ)adsorption,titanate sodium nanotubes(Na_2Ti_2O_5-NTs)were synthesized and characterized,and then they were used to remove Co(Ⅱ) from aqueous solution and compared with titanic acid nanotubes(H_2Ti_2O_5-NTs) and potassium hexatitanate whiskers(K_2Ti_6O_(13)).The results showed that the adsorption of Co(Ⅱ) on the materials was dependent on p H values and was a spontaneous,endothermic process.Specifically,Na_2Ti_2O_5-NTs exhibited much more efficient ability to adsorb Co(Ⅱ) from aqueous solution,with the maximum adsorption capacity of 85.25 mg/g.Furthermore,Na_2Ti_2O_5-NTs could selectively adsorb Co(Ⅱ) from aqueous solution containing coexisting ions(Na^+,K^+,Mg^(2+),and Ca^(2+)).The results suggested that Na_2Ti_2O_5-NTs were potential effective adsorbents for removal of Co(Ⅱ) or cobalt-60 from wastewater.
文摘目的:观察干眼熏蒸联合环孢素滴眼液(Ⅱ)及玻璃酸钠滴眼液治疗混合型干眼症的效果。方法:选取2021年9月—2023年12月南昌爱尔眼科医院收治的干眼症患者100例,采用随机数字表法将患者分为常规组和联合组,每组50例。常规组采用干眼熏蒸联合玻璃酸钠滴眼液治疗,联合组采用干眼熏蒸联合环孢素滴眼液(Ⅱ)及玻璃酸钠滴眼液治疗,均治疗1个月。比较两组治疗效果、泪膜破裂时间(breakup time of tear film,BUT)、角膜荧光素染色(fluorescent staining,FL)、泪河高度(tear meniscus height,TMH)、泪液分泌试验(SchirmerⅠtest,SⅠt)、干眼症状评分、不良反应发生率。结果:联合组治疗总有效率高于常规组(P<0.05)。与治疗前比较,治疗1个月后两组BUT均延长,角膜FL评分均降低,联合组BUT长于常规组,角膜FL评分低于常规组(P<0.05)。与治疗前比较,治疗1个月后两组TMH均升高,SⅠt均延长,联合组TMH高于常规组,SⅠt长于常规组(P<0.05)。与治疗前比较,治疗2周、1个月后两组干眼症状评分均降低,联合组干眼症状评分均低于常规组(P<0.05)。两组不良反应发生率比较,差异无统计学意义(P>0.05)。结论:干眼熏蒸联合环孢素滴眼液(Ⅱ)及玻璃酸钠滴眼液治疗混合型干眼症,能够提高治疗总有效率,改善干眼症状,提高泪膜稳定性。
