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三磷腺苷合酶抑制因子1对2型糖尿病的诊断效能 被引量:1
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作者 关丫丫 钟根深 +3 位作者 王伟 路申 杨秀珍 叶建平 《新乡医学院学报》 CAS 2023年第5期448-452,共5页
目的探讨血清中三磷腺苷合酶抑制因子1(ATPIF1)对2型糖尿病(T2DM)的诊断效能。方法选择2021年5月至2021年9月新乡医学院第三附属医院内分泌科收治的80例T2DM患者为研究对象(T2DM组);另选择同期80例体检健康者为健康对照组。采集2组患者... 目的探讨血清中三磷腺苷合酶抑制因子1(ATPIF1)对2型糖尿病(T2DM)的诊断效能。方法选择2021年5月至2021年9月新乡医学院第三附属医院内分泌科收治的80例T2DM患者为研究对象(T2DM组);另选择同期80例体检健康者为健康对照组。采集2组患者空腹外周静脉血,应用己糖激酶法检测血清血糖(GLU)水平,氧化酶法检测血清总胆固醇(TC)、三酰甘油(TG)水平,直接法检测血清高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)水平,酶联免疫吸附法检测血清中胰岛素(INS)、C-肽和ATPIF1水平,离子交换高效液相色谱法检测糖化血红蛋白(HbA1c)水平,实时荧光定量聚合酶链式反应法检测外周血单核细胞中ATPIF1 mRNA相对表达量。采用受试者操作特征(ROC)曲线下面积(AUC)评估血清ATPIF1水平、外周血单核细胞ATPIF1 mRNA相对表达量诊断T2DM的效能。结果T2DM组患者的GLU、HbA1c、INS和C-肽水平显著高于健康对照组,血清ATPIF1水平和外周血单核细胞ATPIF1 mRNA相对表达量显著低于健康对照组(P<0.05);2组受试者的TC、TG、HDL-C、LDL-C水平比较差异无统计学意义(P>0.05)。血清ATPIF1预测T2DM的AUC为0.916(95%置信区间:0.873~0.960,P<0.05);当ATPIF1以1.37μg·L^(-1)为截断点时,Youden指数为0.738,敏感度为93.8%,特异度为80.0%。外周血单核细胞中ATPIF1 mRNA相对表达量预测T2DM的AUC为0.965(95%置信区间:0.943~0.988,P<0.05);当ATPIF1 mRNA相对表达量以0.95为截断点时,Youden指数为0.838,敏感度为83.8%,特异度为100.0%。血清ATPIF1水平和外周血单核细胞ATPIF1 mRNA相对表达量预测T2DM的Youden指数显著低于GLU和HbA1c,显著高于INS和C-肽(P<0.001)。结论血清ATPIF1水平和外周血单核细胞中ATPIF1 mRNA表达水平降低会增加T2DM的患病风险,可作为诊断T2DM的生物标志物。 展开更多
关键词 抑制因子1 2型糖尿病 诊断效能
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白皮松蛋白细胞中的ATP酶和酸性磷酸酯酶活性定位及其与季节变化的关系 被引量:3
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作者 杨雄 高信曾 李武陵 《西北植物学报》 CAS CSCD 北大核心 1993年第1期9-14,共6页
本文报道白皮松茎次生韧皮部蛋白细胞中ATP酶和酸性磷酸酯酶的定位结果及其季节性变化。无论蛋白细胞发生在直立射线薄壁细胞中,还是横卧射线薄壁细胞或径向片薄壁细胞中,它们的ATP酶和酸性磷酸酯酶活性都显著地高于普通射线薄壁细胞。... 本文报道白皮松茎次生韧皮部蛋白细胞中ATP酶和酸性磷酸酯酶的定位结果及其季节性变化。无论蛋白细胞发生在直立射线薄壁细胞中,还是横卧射线薄壁细胞或径向片薄壁细胞中,它们的ATP酶和酸性磷酸酯酶活性都显著地高于普通射线薄壁细胞。而且,与成熟筛胞联系的成熟蛋白细胞具有最为显著的ATP酶和酸性磷酸酯酶活性。蛋白细胞一旦解体,酶活性便急剧下降或消失。酶活性的表达贯穿春、夏、秋三季,以夏季最为显著。但是,两种酶在表达的时间和空间上有一定差异。作者认为,白皮松蛋白细胞中显著的ATP酶活性和酸性磷酸酯酶活性可能对韧皮部中碳水化合物的转运具有重要意义。 展开更多
关键词 蛋白细胞 白皮松
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急性一氧化碳中毒对小鼠心肌酶学的影响 被引量:1
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作者 杨志军 王耀峰 文小军 《新乡医学院学报》 CAS 2014年第1期29-31,共3页
目的观察急性一氧化碳中毒(ACMP)后小鼠心肌酶的变化,探讨一氧化碳(CO)的心肌毒性。方法健康C57BL/6J雄性小鼠40只,随机分为对照组(腹腔注射空气80 mL·kg-1)、低剂量组(腹腔注射CO40 mL·kg-1)、中剂量组(腹腔注射CO 60 mL... 目的观察急性一氧化碳中毒(ACMP)后小鼠心肌酶的变化,探讨一氧化碳(CO)的心肌毒性。方法健康C57BL/6J雄性小鼠40只,随机分为对照组(腹腔注射空气80 mL·kg-1)、低剂量组(腹腔注射CO40 mL·kg-1)、中剂量组(腹腔注射CO 60 mL·kg-1)和高剂量组(腹腔注射CO 80 mL·kg-1),每组10只。腹腔注射24 h后处死小鼠,比色法检测小鼠心肌中Na+-K+-三磷腺苷(ATP)酶、乳酸脱氢酶(SDH)活性的变化;全自动生化仪检测血清心肌酶变化;心电图机检测小鼠心肌电位变化。结果与对照组比较,低剂量组小鼠心肌中Na+-K+-ATP酶、SDH活性升高,而中、高剂量组小鼠心肌中Na+-K+-ATP酶、SDH活性显著下降;与对照组比较,血清心肌酶水平随染毒剂量增加而升高,其中高剂量组心肌酶水平较对照组显著升高,差异有统计学意义(P<0.05)。心电图结果显示,与对照组比较,低、中、高剂量组小鼠心率加快,其中高剂量组部分小鼠出现心律失常。结论 ACMP会导致小鼠心肌酶水平的改变,提示临床上应重视CO中毒后的心肌损伤。 展开更多
关键词 急性一氧化碳中毒 Na+-K+-三磷腺苷酶 琥珀酸脱氢 心肌 小鼠
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倒卵叶五加总皂甙对大鼠心肌顿抑的作用 被引量:3
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作者 马世玉 吴基良 +1 位作者 向继洲 李立中 《中国心血管杂志》 2002年第5期307-310,共4页
目的 探讨倒卵叶五加总皂甙 (SAOH)对大鼠缺血心肌再灌注后心肌顿抑的作用。方法 采用结扎左冠状动脉前降支 30 m in,再灌注复制大鼠心肌缺血 /再灌注损伤 (IRI)的模型 ,结扎前 10 min注射 SAOH,采用左心室插管 ,动态监测左心室心功... 目的 探讨倒卵叶五加总皂甙 (SAOH)对大鼠缺血心肌再灌注后心肌顿抑的作用。方法 采用结扎左冠状动脉前降支 30 m in,再灌注复制大鼠心肌缺血 /再灌注损伤 (IRI)的模型 ,结扎前 10 min注射 SAOH,采用左心室插管 ,动态监测左心室心功能 ,并测定心肌再灌注 40 m in时心肌组织三磷腺苷酶 (ATPase)的活性和血浆一氧化氮(NO)。结果  IRI组、SAOH1 组 (5 0 mg/ kg)及 SAOH2 组 (10 0 m g/ kg)在缺血及再灌注过程中左心室收缩压和室内压上升或下降最大速率 (L VSP和± d P/ dtmax)均呈进行性下降 ,但 SAOH组下降趋势较缓。 SAOH组在整个再灌注过程中 ,L VSP和± d P/ dtmax均较 IRI组明显提高 ,甚至 SAOH2 组的 +d P/ dtmax值在再灌注即刻、再灌注 10 m in时即高于假手术组 (P均 <0 .0 1) ,再灌注 2 0 m in、30 min时与假手术组无明显差异。再灌注 40 min时 ,SAOH1 组、SAOH2 组较 IRI组心肌肌膜 Na+- K+- ATPase、Ca2 +- ATPase、Mg2 +- ATPase活性和血浆 NO水平明显升高 (P均<0 .0 1)。结论  SAOH对心肌顿抑有明显的改善作用 ,其机制之一可能与其提高心肌组织 ATPase活性和血浆NO含量 ,减少 Ca2 +超载有关。 展开更多
关键词 倒卵叶五加总皂甙 心肌顿抑 三磷腺苷酶 心功能 一氧化氮 动物模型 SAOH
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OSMOTIC STRESS DECREASES THE ACTIVITY OF ATPASE ASSOCIATED WITH THE ROOT CAP PLASMODESMATAIN ZEA MAYS 被引量:1
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作者 苗龙 王学臣 张伟成 《Acta Botanica Sinica》 CSCD 1997年第8期774-777,共4页
With light and electron microscopy the substructural change and the ATPase activity of corn (Zea mays L.) root cap cells after short-term osmotic stress were studied. Some spoke-like fine strands originating from the ... With light and electron microscopy the substructural change and the ATPase activity of corn (Zea mays L.) root cap cells after short-term osmotic stress were studied. Some spoke-like fine strands originating from the departed periplasm and stretching towards cell wall could be observed even after plasmolysis. By observing the precipitation of ATPase activity product (lead phosphate) at plasma membrane and plasmodesmata, it was found that the fine strands were plasma membrane-lined channels surrounding the cytoplasm and that they still firmly connected to the plasmodesmata during plasmolysis. Compared with the control (unstressed), a sharp decrease of ATPase activity in the plasmodesmata of the stressed cells was observed. Inhibition of energy metabolism in these limited locales would affect the physiological activity, maybe including the regulation of permeability and the change of size exclusion limit (SEL) of plasmodesmata. 展开更多
关键词 ATPASE Osmotic stress PLASMODESMATA Zea mays
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Effects of combination of irbesartan and perindopril on calcineurin expression and sarcoplasmic reticulum Ca^(2+)-ATPase activity in rat cardiac pressure-overload hypertrophy 被引量:9
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作者 JIANG Qing-jun XU Geng +1 位作者 MAO Fei-fei ZHU You-fa 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2006年第3期228-234,共7页
Aim: To observe effects of angiotensin (Ang) II receptor antagonist (ATI) irbesartan and angiotensin-converting enzyme (ACE) inhibitor perindopril on rat myocardium calcineurin expression and sarcoplasmic retic... Aim: To observe effects of angiotensin (Ang) II receptor antagonist (ATI) irbesartan and angiotensin-converting enzyme (ACE) inhibitor perindopril on rat myocardium calcineurin expression and sarcoplasmic reticulum Ca^2+-ATPase activity in the model of pressure-overload cardiac hypertrophy. Methods: Forty male adult Sprague Dawley rats were divided into 5 groups One group was treated by sham operation; four groups were myocardium hypertrophy cases caused by banding aortic above renal artery. Drugs were given one week after operation. Group 1: sham group, rats (n=8) were gavaged with normal saline 2 ml/(kg·d) (ig); Group 2: control group, rats (n=8) were treated with normal saline 2 ml/(kg·d) (ig); Group 3: rats (n=8) were given perindopril 2 mg/(kg·d) (ig); Group 4: rats (n=8) were treated with irbesartan 20 mg/(kg·d) (ig); Group 5: rats (n=8) were given irbesartan 20 mg/(kg·d) plus perindopril 2 mg/(kg·d) (ig). Morphometric determination, calcineurin expression and sarcoplasmic reticulum Ca^2+-ATPase activity were done at the end of 6 week of drug intervention. Expression of calcineurin in myocardium was detected by immunohistochemistry. Results: Left ventricular mass index (LVMI), transverse diameter of myocardial cell (TDM), calcineurin activity were remarkably decreased after drug intervention and this decrease was most remarkable in the combination drug therapy group. Sarcoplasmic reticulum Ca^2+-ATPase activity was increased after drug intervention, especially in the combined drug therapy group. Calcineurin expression in myocardium was remarkably decreased after drug intervention. LVMI was positively correlated with TDM and calcineurin, negatively correlated with sarcoplasmic reticulum Ca^2+-ATPase. Conclusion: These data suggest that irbesartan and perindopril inhibit cardiac hypertrophy through the increased activity of sarcoplasmic reticulum Ca^2+-ATPase and decreased expression of calcineurin. Their combination had better effects on regressing of ventricular hypertrophy. 展开更多
关键词 Angiotensin (Ang) receptor antagonist Angiotensin-converting enzyme inhibitor CALCINEURIN Sarcoplasmic reticulum Ca2+-ATPase Pressure overload Cardiac hypertrophy Rat
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A novel phenol-bound pectic polysaccharide from Decalepis hamiltonii with multi-step ulcer preventive activity 被引量:6
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作者 BM Srikanta MN Siddaraju Shylaja M Dharmesh 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第39期5196-5207,共12页
AIM: To investigate H+, K+-ATPase inhibition, anti-H pylori , antioxidant, and the in vivo antiulcer potential of a pectic polysaccharide from Swallow root (Decalepis hamiltonii; SRPP). METHODS: SRPP, with known sugar... AIM: To investigate H+, K+-ATPase inhibition, anti-H pylori , antioxidant, and the in vivo antiulcer potential of a pectic polysaccharide from Swallow root (Decalepis hamiltonii; SRPP). METHODS: SRPP, with known sugar composition [rhamnose: arabinose: xylose: galactose in the ratio of 16:50:2:32 (w/w), with 141 mg/g of uronic acid] was examined for anti-ulcer potency in vivo against swim/ ethanol stress-induction in animal models. Ulcer index, antioxidant/antioxidant enzymes, H+, K+-ATPase and gastric mucin levels were determined to assess the anti- ulcer potency. Anti-H pylori activity was also determined by viable colony count and electron microscopic studies. RESULTS: SRPP, containing phenolics at 0.12 g GAE/g, prevented stress-induced gastric ulcers in animal models by 80%-85%. Down regulation of gastric mucin 2-3 fold, antioxidant/antioxidant enzymes and upregulation of 3 fold of H+, K+-ATPase in ulcerous animals were normalized upon treatment with SRPP. Histopathological analysis revealed protection to the disrupted gastric mucosal layer and epithelial glands. SRPP also inhibited H+, K+-ATPase in vitro, at an IC50 of 77 μg/mL as opposed to that of 19.3 μg/mL of Lansoprazole and H pylori growth at Minimum Inhibitory Concentration (MIC) of 150 μg/mL. In addition, free radical scavenging (IC50-40 μg/mL) and reducing power (3200 U/g) activities were also observed. CONCLUSION: SRPP, with defined sugar composition and phenolics, exhibited multi-potent free radical scavenging, antioxidant, anti-H pylori, inhibition of H+, K+-ATPase and gastric mucosal protective activities. In addition, SRPP is non-toxic as opposed to other known anti-ulcer drugs, and therefore may be employed as a potential alternative for ulcer management. 展开更多
关键词 Swallow root pectic polysaccharide Gastriculcer H^+ K^+-ATPase HISTOPATHOLOGY Antioxidant activity H pylori
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THE BI DIRECTIONAL REGULATION OF FILAMIN ON THE ATPase ACTIVITY OF SMOOTH MUSCLE MYOSIN 被引量:9
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作者 林原 孙惠君 +3 位作者 戴淑芳 唐泽耀 贺欣 陈华 《Chinese Medical Sciences Journal》 CAS CSCD 2000年第3期162-164,共3页
The aim of this study is to investigate the functional relationship between filamin, a known actin binding protein, and myosin and the effects of filamin on the interaction between myosin and actin. Methods.Ultra cent... The aim of this study is to investigate the functional relationship between filamin, a known actin binding protein, and myosin and the effects of filamin on the interaction between myosin and actin. Methods.Ultra centrifugation method was used to investigate the binding of filamin to both phosphorylated and unphosphorylated myosins. Mg ATPase activities of both phosphorylated and unphosphorylated myosins in the presence and absence of actin were measured to observe the effects resulted from filamin actin and filamin myosin interactions. Results. It was found that filamin is also a myosin binding protein. Filamin inhibited the actin activated Mg ATPase activity of phosphorylated myosin and stimulated Mg ATPase of phosphorylated myosin in the absence of actin; in addition, filamin stimulated Mg ATPase activity of unphosphorylated myosin in both the presence or absence of actin. Conclusion. The results suggest that the effects of filamin on the myosin Mg ATPase activities are bi directional, i.e., stimulatory via binding to myosin and inhibitory via binding to actin. 展开更多
关键词 bi directional regulation myosin binding myosin actin interaction
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Study on the effect of doxorubicin on expressions of genes encoding myocardial sarcoplasmic reticulum Ca^2+ transport proteins and the effect of taurine on myocardial protection in rabbits 被引量:12
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作者 黄先玫 朱卫华 康曼丽 《Journal of Zhejiang University Science》 CSCD 2003年第1期114-120,共7页
To investigate the effect of doxorubicin(DOX) on gene expression of the myocardial sarcoplasmic reticulum (SR)Ca 2+ transport proteins and the mechanism of taurine(Tau) protecting cardiac muscle cells, 9 rabbits... To investigate the effect of doxorubicin(DOX) on gene expression of the myocardial sarcoplasmic reticulum (SR)Ca 2+ transport proteins and the mechanism of taurine(Tau) protecting cardiac muscle cells, 9 rabbits were injected with DOX , 8 rabbits with DOX and Tau, and 9 rabbits with normal saline. Cardiac function , concentration of calcium in cardiomyocytes (Myo[Ca 2+ ] \%i\%), activity of SR Ca 2+ ATPase(SERCA2a), level of SERCA2a mRNA and Ca 2+ released channels(RYR2)mRNA were detected. The left ventricle tissues were observed by electron microscopy. The results showed that cardiac index, left ventricular systolic pressure, activity of SR Ca 2+ ATPase and level of SERCA2a mRNA decreased , while Myo[Ca 2+ ] \%i\% increased in DOX treated rabbits. DOX could not affect the level of RYR2 mRNA. Tau intervention could alleviate the increase of left ventricular diastolic pressure, Myo[Ca 2+ ] \%i\% and the decrease of SERCA2a mRNA induced by doxorubicin. The results suggested that downregulation of SERCA2a gene expression was an important mechanism of DOX induced cardiomyopathy and that Tau could partially improve the heart function by reducing calcium overload and alleviating downregulation of SERCA2a mRNA. 展开更多
关键词 DOXORUBICIN Ca 2+ ATPase Ryanodine receptor TAURINE Gene expression
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Effects of Salinity Fluctuation Frequency on the Osmolarity,Na^+-K^+-ATPase Activity and HSP70 Expression in Juvenile Chinese Shrimp,Fenneropenaeus chinensis 被引量:1
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作者 DING Sen WANG Fang +2 位作者 SUN Hao GUO Biao DONG Shuanglin 《Journal of Ocean University of China》 SCIE CAS 2009年第1期71-76,共6页
Experiments were conducted to examine the effects of salinity fluctuation frequency on the osmolarity, Na^+-K^+-ATPase activity and HSP70 of Chinese shrimp Fenneropenaeus chinensis ruth initial wet body weight of 1.... Experiments were conducted to examine the effects of salinity fluctuation frequency on the osmolarity, Na^+-K^+-ATPase activity and HSP70 of Chinese shrimp Fenneropenaeus chinensis ruth initial wet body weight of 1.460g±0.091 g. The salinity in the control group (DO) was 28 throughout the experiment, whereas treatments D2, D4, D6 and D8 were subjected to different salinity fluctuation frequencies of 2, 4, 6 and 8d, respectively. The salinity in treatments D2, D4, D6 and D8 was kept at 28 for 2, 4, 6 and 8d, respectively, decreased abruptly to salinity 24, lasted for another 2 d, and then was raised to its initial value 28. This was a complete salinity fluctuation cycle that afterwards repeated itself. After 32 days, the osmolarity in treatments D2, D4, D6 and D8 was significantly lower than that in treatment DO (P〈0.05). There were significant differences in both muscle and eyestalks HSP70 expression among groups. The HSP70 expressions in muscle and eyestalks in group D4 were 61.4% and 57.0% higher, respectively, than that in the control group DO (P〈0.05). There were, however, no significant differences in gill or hepatopancreas Na^+-K^+-ATPase activity between the treatments and the control. 展开更多
关键词 Fenneropenaeus chinensis Salinity fluctuation frequency OSMOLARITY Na^+-K^+-ATPase activity HSP70
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Stochastic Four-State Mechanochemical Model of F_1-ATPase
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作者 吴魏霞 展永 +2 位作者 赵同军 韩英荣 陈娅斐 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第10期630-634,共5页
F_1-ATPase, a part of ATP synthase, can synthesize and hydrolyze ATP moleculars in which the centralγ-subunit rotates inside the α_3β_3 cylinder.A stochastic four-state mechanochemical coupling model of F_1-ATPase ... F_1-ATPase, a part of ATP synthase, can synthesize and hydrolyze ATP moleculars in which the centralγ-subunit rotates inside the α_3β_3 cylinder.A stochastic four-state mechanochemical coupling model of F_1-ATPase isstudied with the aid of the master equation.In this model, the ATP hydrolysis and synthesis are dependent on ATP,ADP, and Pi concentrations.The effects of ATP concentration, ADP concentration, and the external torque on theoccupation probability of binding-state, the rotation rate and the diffusion coefficient of F_1-ATPase are investigated.Moreover, the results from this model are compared with experiments.The mechanochemical mechanism F_1-ATPase isqualitatively explained by the model. 展开更多
关键词 F1-ATPase four-state mechanochemical model hydrolysis reaction the master equation
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Ultrastructural and Ultrahistochemical Studies on Rat Hepatocytes under the Effect of Lead Acetate Administration
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作者 Awatef Mohamed Ali Wafaa Abdel-Rhaman Ahmad Mona Abdel-Hamed Yehia 《Journal of Life Sciences》 2010年第6期21-28,共8页
The present study was carried out to investigate the effect of lead acetate on the ultrastructure of albino rat hepatocytes with special reference to its effect on the mitochondrial and lysosomal activity. Lead acetat... The present study was carried out to investigate the effect of lead acetate on the ultrastructure of albino rat hepatocytes with special reference to its effect on the mitochondrial and lysosomal activity. Lead acetate was given orally to albino rats at a dose of 1% lead acetate / 100 g body weight, three times / week for one month (Gila), two months (Glib), three months (GIIc). Liver total protein, body / liver weight ratio and cytochrome P-450 value were calculated. Three parts of the liver samples were incubated in media containing adenosine triphosphate, p-nitrophenyl phosphate and 2% glutlraldehyde and prepared for electron microscopy to visualize adenosine triphosphatase, acid phosphatase and the fine structures ofhepatocytes respectively. The main changes of the fine structures was found in the nucleus, as irregularity of the nuclear membrane, clumped heterochromatin and sun radiation of lead inclusion bodies. The cytoplasm was characterized by shortened, dilated rough endoplasmic reticulum, destroyed and hazy mitochondria with increased number of lysosomes with storage secretion. Ultrastructure findings showed hepatocytes damage due to increased hydrolysis enzymes and decreased cytotoxic enzymes (cytochrome P-450) as well as oxidative enzymes that proved the toxic effect of lead according to the duration of exposure. 展开更多
关键词 Acid phosphatase adenosine triphosphatase HEPATOCYTE lead acetate u|trastructure.
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Ultracytochemical localization of H+-adenosine triphosphatase activity in autophagic vacuoles induced by vinblastine in rat liver
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作者 LUOSHENQIU MASAHIROSAKAI 《Cell Research》 SCIE CAS CSCD 1990年第2期207-215,共9页
H+-adenosine triphosphatase (H+-ATPase) activity was demonstrated oytoohemioally in autophagio vaouoles (AVs) of rat hepatooytes using a modification of the method for the demonstration of neutral p-nitrophenyl phosph... H+-adenosine triphosphatase (H+-ATPase) activity was demonstrated oytoohemioally in autophagio vaouoles (AVs) of rat hepatooytes using a modification of the method for the demonstration of neutral p-nitrophenyl phosphatase (p-NPPase) activity [1]. When an inhibitor of H+-ATPase, N-ethylmaleimide (NEM) or 4,4'-diisothiooyanostilbene-2,2'disalfonio aold, di-sodium salt (BIDS) was included in the incubation medium the enyzme activity was abolished indicating that p-NPPase demonstrated in this study represents H+-ATPase. Autophagy was induced by a single intraperitoneal injection of vinblastine sulfate (VBL). The number of AVs increased remarkably in hepatooytes from 40 min after VBL treatment. H+-ATPase activity was observed mainly on the membranes of lysosomes and AVs. However, early forms of AVs containing only incompletely digested material showed no H+-ATPase activity. Most AVs revealing a positive reaction seemed to be in advanced stages of development. Acid phosphatase aotioity was demonstrable in mature but not in early forms of AVs. The present investigation showed that membranes of advanced stage A Vs possess an H+-ATPase which may be derived from lysosomal membranes. 展开更多
关键词 RAT HEPATOCYTE AUTOPHAGY H+-ATPase.
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Dietary supplementation of some antioxidants against hypoxia
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作者 Sanaa Ahmed Ali Hanan Farouk Aly +1 位作者 Lilla Mohammed Faddah Zeenat F Zaidi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2012年第44期6379-6386,共8页
The present study aims to clarify the protective effect of supplementation with some antioxidants,such as idebenone(200 mg/kg,ip),melatonin(10 mg/kg,ip) and arginine(200 mg/kg,ip) and their combination,on liver functi... The present study aims to clarify the protective effect of supplementation with some antioxidants,such as idebenone(200 mg/kg,ip),melatonin(10 mg/kg,ip) and arginine(200 mg/kg,ip) and their combination,on liver function(T.protein,albumin,alanine aminotransferase,aspartate aminotransferase and alkaline phosphatase),energetic parameters(adenosine triphosphate,adenosine diphosphate,adenosine monophosphate,inorganic phosphate,total adenylate,adenylate energy charge and potential phosphate).The effect on glycolytic and glycogenolytic enzymes(glucose,glycogen,glycogen phosphorylase,pyruvate kinase and phosphofructokinase against hypoxia) was also studied.The drugs were administered 24 and 1 h prior sodium nitrite intoxication.All biochemical parameters were estimated 1 h after sodium nitrite injection.Injection of sodium nitrite(75 mg/kg,sc) produced a significant disturbance in all biochemical parameters of liver function,energetic parameters and glycolytic and glycogenolytic enzymes.Hepatic damage was confirmed by histopathological examination of the liver as compared to controls.The marked changes in hepatic cells induced by sodium nitrite were completely abolished by pretreatment with the drug combination,suggesting potential protection against sodium nitrite-induced hypoxia.It could be concluded that a combination of both idebenone and melatonin or idebenone and arginine provides potential protection against sodium nitrite-induced hypoxia by improving biochemical parameters and preserving liver histology. 展开更多
关键词 HYPOXIA IDEBENONE MELATONIN Nitrate/ni-trite Adenosine triphosphate
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Adeno-associated virus vector-mediated triple gene transfer of dopamine synthetic enzymes
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作者 樊东升 沈扬 康德宣 《Chinese Medical Journal》 SCIE CAS CSCD 2001年第12期44-47,105,共5页
Objective To explore triple gene transfer of dopamine synthetic enzymes with separate adeno-associated virus (AAV) vectors.Methods The genes for dopamine synthetic enzymes, tyrosine hydroxylase (TH), aromatic L-amino ... Objective To explore triple gene transfer of dopamine synthetic enzymes with separate adeno-associated virus (AAV) vectors.Methods The genes for dopamine synthetic enzymes, tyrosine hydroxylase (TH), aromatic L-amino acid decarboxylase (AADC), and GTP cyclohydrolase Ⅰ (GCH, an enzyme critical for tetrahydrobiopterin synthesis) were cotransduced into 293 cells with separate AAV vectors. Expressions of TH, AADC and GCH were detected by Western blot analysis. Intracellular dopamine level was assayed by high-performance liquid chromatography.Results TH, AADC and GCH were effectively coexpressed in transduced cells with three separate AAV vectors, AAV-TH, AAV-AADC and AAV-GCH. Furthermore, the coexpression resulted in an effectively spontaneous dopamine production in cotransduced cells.Conclusion The triple transduction of TH, AADC and GCH genes with separate AAV vectors is effective, which might be important to gene therapy for Parkinson's disease. 展开更多
关键词 dopamine · GTP cyclohydrolase · adeno-associated virus
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Variations of energy metabolism and adenosine Triphosphatase activity in gastric mucosa in chronic atrophic gastritis rats with Qi deficiency and blood stasis syndrome and effect of Zhiweifangbian capsule 被引量:7
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作者 Yongqiang Duan Weidong Cheng +4 位作者 Yingxia Cheng Hongyan Li Xueyan Li Liming Zhu Xiaoyi Yang 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2013年第4期500-504,共5页
OBJECTIVE: To study the effects of Zhiweifangbian (ZWFB) capsule on lactic dehydrogenase (LDH), succinic dehydrogenase (SDH) and ATPase activities in gastric mucosa of chronic atrophic gastritis (CAG) rats with Qi def... OBJECTIVE: To study the effects of Zhiweifangbian (ZWFB) capsule on lactic dehydrogenase (LDH), succinic dehydrogenase (SDH) and ATPase activities in gastric mucosa of chronic atrophic gastritis (CAG) rats with Qi deficiency and blood stasis syndrome. METHODS: Totally 90 rats were randomly divided into 2 groups: normal group (n=10) and modelgroup (n=80). The CAG rat model of Qi deficiency and blood stasis type was induced by synthetic methods. After modeling for 12 weeks and the successful CAG model was determined, the CAG model rats were divided by random number table into model group (MG), ZWFB high-dose group (ZWFBH), ZWFB middle-dose group (ZWFBM), ZWFB low-dose group (ZWFBL) and Weimeisu group (WM), 9 rats in each group. The rats in the normal and model groups were intragastrically administrated with distilled water, 10 mL/kg every day; the ZWFB high-dose group with ZWFB, 0.6 g/ kg -1 · d -1 ; the ZWFB middle-dose group with ZWFB, 0.3 g/kg -1 · d -1 ; the ZWFB low-dose group with ZWFB, 0.15 g/kg -1 · d -1 , and the WM group with suspension of WM , 0.25 g/kg -1 · d -1 . The treatment was given for 90 consecutive days. Then general survival states were observed and the activities of LDH, SDH, Na + -K + -ATPase and Ca 2+ -Mg 2+ -ATPase in gastric mucosa tissue were detected. RESULTS: Compared with the normal group, activity of LDH in the gastric mucosa (P<0.05) and activities of SDH, Na + -K + -ATPase and Ca 2+ -Mg 2+ -ATPase significantly decreased in the normal group (P<0.05). Compared with the model group the activity of LDH decreased and activities of SDH, Na + -K + -ATPase and Ca 2+ -Mg 2+ -ATPase significantly increased in the high dose ZWFB group (P<0.05). CONCLUSION: ZWFB capsule can promote energy metabolism and ATPase activity in the gastric mucosa cell, so as to protect the function of the gastric mucosa cell. 展开更多
关键词 Qi deficiency blood stasis Gastritis atrophic Lactic dehydrogenase Succinate dehydrogenase Zhiweifangbian capsule
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Response of ATP sulfurylase and serine acetyltransferase towards cadmium in hyperaccumulator Sedum alfredii Hance 被引量:3
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作者 Wei-dong GUO Jun LIANG +2 位作者 Xiao-e YANG Yue-en CHAO Ying FENG 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2009年第4期251-257,共7页
We studied the responses of the activities of adenosine-triphosphate (ATP) sulfurylase (ATPS) and serine acetyltransferase (SAT) to cadmium (Cd) levels and treatment time in hyperaccumulating ecotype (HE) Sedum alfred... We studied the responses of the activities of adenosine-triphosphate (ATP) sulfurylase (ATPS) and serine acetyltransferase (SAT) to cadmium (Cd) levels and treatment time in hyperaccumulating ecotype (HE) Sedum alfredii Hance, as compared with its non-hyperaccumulating ecotype (NHE). The results show that plant growth was inhibited in NHE but promoted in HE when exposed to high Cd level. Cd concentrations in leaves and shoots rapidly increased in HE rather than in NHE, and they became much higher in HE than in NHE along with increasing treatment time and Cd supply levels. ATPS activity was higher in HE than in NHE in all Cd treatments, and increased with increasing Cd supply levels in both HE and NHE when exposed to Cd treatment within 8 h. However, a marked difference of ATPS activity between HE and NHE was found with Cd treatment for 168 h, where ATPS activity increased in HE but decreased in NHE. Similarly, SAT activity was higher in HE than in NHE at all Cd treatments, but was more sensitive in NHE than in HE. Both ATPS and SAT activities in NHE leaves tended to decrease with increasing treatment time after 8 h at all Cd levels. The results reveal the different responses in sulfur assimilation enzymes and Cd accumulation between HE and NHE. With increasing Cd stress, the activities of sulfur assimilation enzymes (ATPS and SAT) were induced in HE, which may contribute to Cd accumulation in the hyperaccumulator Sedum alfredii Hance. 展开更多
关键词 Sedum alfredii Hance Cadmium (Cd) Adenosine-triphosphate (ATP) sulfurylase (ATPS) HYPERACCUMULATOR Serine acetyltransferase
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Effect of Acupuncture on NO, NOS and Ca^(2+)-Mg^(2+)-ATPase Activity in Brain Tissue of Subacute Aging Rats Induced by D-galactose
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作者 王玉琳 金泽 陈静 《Journal of Acupuncture and Tuina Science》 2012年第3期146-149,共4页
Objective: To explore the mechanism of acupuncture in treating brain aging. Methods: Forty healthy Wistar rats were randomly divided into 4 groups with 10 rats in each group. The rats in the control group didn't re... Objective: To explore the mechanism of acupuncture in treating brain aging. Methods: Forty healthy Wistar rats were randomly divided into 4 groups with 10 rats in each group. The rats in the control group didn't received modeling and treatment. The rats in the model group, the Governor Vessel acupoints group (GVA group) and the body acupoints group (BA group) were induced as subacute aging rat model. The rats in the model group didn't take treatment. On the modeling day, the rats in the GVA group received acupuncture at Baihui (GV 20) and Dazhui (GV 14) while the rats in the BA group received acupuncture at Guanyuan (CV 3) and Zusanli (ST 36). The contents of NO and NOS, as well as the activity of Ca^2+-Mg^2+-ATPase in the brain tissue of rats in each group were observed. Results: After modeling, the contents of NO and NOS of brain tissue increased significantly and the activity of Ca2^+-Mg^2+-ATPase decreased markedly. Acupuncture treatment could inhibit the increases of NO and NOS contents, improve the decrease of the activity of Ca^2+-Mg^2+-ATPase. The results of the GVA group were better than those of BA group (both P〈0.05). Conclusion: Acupuncture improved the activity of Ca^2+-Mg^2+-ATPase and stabilized the NOS concentration. As a result, the NO content was balanced and the ohvsiological function of NO was fully induced for anti-a^in~, esoeciallv in the GVA group. 展开更多
关键词 Acupuncture Therapy Aging Nitric Oxide Nitric Oxide Synthase Ca^2+-Mg^2+-ATPase Rats
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