急性心肌梗死患者红细胞的变形能力与其三磷酸腺苷酶活性关系的研究

本文观察了５４例急性心肌梗死（ＡＭＩ）患者发病３天内红细胞变形能力（ＥＤ）和红细胞三磷酸腺苷酶（ＡＴＰａｓｅ）活性及红细胞内离子浓度的变化，并分析其相互关系。结果显示，ＡＭＩ患者红细胞滤过指数（ＩＦ）校对照组明显增高（Ｐ＜０．００１）。红细胞Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ、Ｃａ２＋－Ｍｇ２＋－ＡＴＰａｓｅ活性和红细胞Ｋ＋、Ｍｇ２＋浓度明显降低，而红细胞Ｎａ＋、Ｃａ２＋浓度明显增高，与对照组相比差异有显著性意义（Ｐ＜０．００１）。ＡＭＩ患者红细胞ＩＦ与红细胞Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ、Ｃａ２＋－Ｍｇ２＋－ＡＴＰａｓｅ活性、红细胞Ｋ＋、Ｍｇ２＋浓度呈负相关（Ｐ＜０．００１），与红细胞Ｎａ＋、Ｃａ２＋浓度呈正相关（Ｐ＜０．００１）。这提示ＡＭＩ患者ＥＤ降低与红细胞ＡＴＰａｓｅ活性和Ｋ＋、Ｍｇ２＋浓度降低及Ｃａ２＋、Ｎａ＋浓度增高有关。     

血压持续偏高青少年红细胞内离子浓度及膜ATP酶活性的变化观察

我们测定了３８例血压持续偏高青少年红细胞膜ＡＴＰ酶活性和红细胞内阳离子浓度。结果表明：Ｎａ＾＋－Ｋ＾＋－ＡＴＰａｓｅ和Ｃａ＾２＋－Ｍｇ＾２＋－ＡＴＰａｓｅ活性明显低于血压正常青少年。红细胞钠、钙含量，红细胞内游离钙水平均明显高于血压正常者。提示：青少年期血压持续偏高个体已存在细胞内钙、钙离子水平的改变，Ｎａ＾＋０Ｋ＾＋－ＡＴＰａｓｅ和Ｃａ＾２＋－Ｍｇ＾２＋ＡＴＰａｓｅ活性降低是血压持续偏高的重要环     

膳食低钙对饲克山病区粮大鼠胰岛分泌的影响

本实验通过对模拟克山病偏食饲料中补充一定量的钙和硒来观察Ｗｉｓｔａｒ大鼠胰岛素（Ｉｎｓ）。结果表明，病区良组血钙水平最低，仅及常规食（ｓｔｏｃｋ）组一半；血清硒（Ｓｅ），α－ＶＥ水平低于Ｓｔｏｃｋ组；Ｉｎｓ减少，血清过氧化脂质水平明显高于Ｓｔｏｃｋ组，血清ＧＳＨ－Ｐｘ活笥低，有显著差异。补钙后钙水平升高，Ｓｅ、α－ＶＥ水平变化不大；Ｉｎｓ显著升高。补Ｓｅ／ＶＥ组Ｓｅ、α－ＶＥ水平明显高于ＥＭ组。联     

慢性肾功能衰竭患者红细胞变形能力与红细胞ATP酶活性及离子浓度关系的研究

检测６５例ＣＲＦ患者ＥＤ和红细胞ＡＴＰ酶活性及离子浓度的变化。结果显示：ＣＲＦ患者红细胞滤过指数（ＩＦ）和Ｃａ２＋，Ｎａ＋明显高于对照组（Ｐ＜０．００１），而Ｎａ＋－Ｋ＋－ＡＴＰ酶、Ｃａ２＋－Ｍｇ２＋－ＡＴＰ酶活性和Ｋ＋，Ｍｇ２＋明显低于对照组（Ｐ＜０．００１）。ＣＲＦ患者ＩＦ与Ｎａ＋－Ｋ＋－ＡＴＰ酶、Ｃａ２＋－Ｍｇ２＋－ＡＴＰ酶活性和Ｋ＋、Ｍｇ２＋浓度呈负相关，与Ｃａ２＋、Ｎａ＋浓度呈正相关。提示ＣＲＦ患者ＥＤ降低与红细胞ＡＴＰ酶活性降低和离子浓度异常有关。     

冠心病患者红细胞ATP酶,超氧化物歧化酶,钠,钾,钙,镁离子和血浆脂？…

目的 探讨冠心病患者红细胞ＡＴＰ酶、超氧化物歧化酶、钠、钾、钙、镁离子和血浆脂质过氧化物的变化。方法 测定３８例冠心病患者和４２例正常人红细胞超氧化物歧化酶（ＳＯＤ）、Ｎａ＾＋,Ｋ＾＋－ＡＴＰ酶、Ｃａ＾２＋－ＡＴＰ酶活性及Ｎａ＾＋、ｋ＾＋、Ｃａ＾２＋、Ｍｇ＾２＋含量和血浆脂质过氧化物（ＬＰＯ）含量。统计方法采用ｔ检验和直线相关分析。结果 冠心病患者红细胞ＳＯＤ、Ｎａ＾＋,ｋ＾＋－ＡＴＰ酶、Ｃａ＾２     

慢性肾功能衰竭患者红细胞变形能力与红细胞ATP酶活性及离子浓度…

检测６５例ＣＲＦ患者ＥＤ和红细胞ＡＴＰ酶活性离子浓度的变化。结果显示；ＣＲＦ患者红细胞滤过指数和Ｃａ＾２＋，Ｎａ＾＋明显高于对照组，而Ｎａ＾＋、Ｋ＾＋－ＡＴＰ酶Ｃａ＾２＋－Ｍｇ＾２＋－ＡＴＰ酶活性和Ｋ＾＋、Ｍｇ＾２＋明显低于对照组。ＣＲＦ患者ＩＦ与Ｎａ＾＋－Ｋ＾＋－ＡＴＰ酶、Ｃａ＾２＋－Ｍｇ＾２＋－ＡＴＰ酶活性和Ｋ＾＋、Ｍｇ＾２＋浓度呈负相关，与Ｃａ＾２＋、Ｎａ＾＋浓度呈相关。     

NIDDM病人红细胞变形能力与红细胞ATP酶活性和红细胞内离子浓度关系的研究

本文检测了４２例ＮＩＤＤＭ病人红细胞变形能力（ＥＤ）和红细胞ＡＴＰ酶活性、红细胞内离子浓度的变化。结果显示ＮＩＤＤＭ病人红细胞滤过指数（ＩＦ）较对照组明显增高（Ｐ＜０．００１）；红细胞Ｎａ＋－Ｋ＋－ＡＴＰ酶和Ｃａ２＋－ＡＴＰ酶活性较对照组明显降低（Ｐ＜０．０１），Ｍｇ２＋－ＡＴＰ酶活性变化不明显；红细胞内Ｎａ＋、Ｃａ２＋浓度较对照组明显增高（Ｐ＜０．０１），而Ｍｇ２＋浓度较对照组明显降低（Ｐ＜０．０１）。有血管病变者这些变化较无血管病变者更明显。ＮＩＤＤＭ病人红细胞ＩＦ与Ｎａ＋－Ｋ＋－ＡＴＰ酶、Ｃａ２＋－ＡＴＰ酶活性呈负相关（ｒ＝－０．４６８，－０．４５８，Ｐ＜０．００１），与红细胞内Ｎａ＋、Ｃａ２＋浓度呈正相关（ｒ＝－０．４７３，０．４６６，Ｐ＜０．Ｄ０１），与Ｍｇ２＋浓度呈负相关（ｒ＝－０．４３６，Ｐ＜０．０１）。     

原发性高血压患者红细胞内CA^2＋,Mg^2＋水平及细胞膜ATP酶活性

对正常人及原发性高血压患者细胞内、外Ｃａ２＋、Ｍｇ２＋浓度和细胞膜ＡＴＰ酶活性之间的关系进行评价。方法检测３２名正常人（ＮＴ），５５例原发性高血压病（ＨＴ）患者血浆和细胞内Ｃａ２＋、Ｍｇ２＋浓度（原子吸收法），细胞膜ＡＴＰ酶活性（比色法）。结果ＨＴ组血浆Ｃａ２＋浓度明显低于ＮＴ组，红细胞内Ｃａ２＋浓度明显高于ＮＴ组，红细胞膜Ｎａ＋－Ｋ＋－ＡＴＰ酶及Ｃａ２＋－ＡＴＰ酶活性明显低于ＮＴ组。血浆Ｍｇ２＋和红细胞内Ｍｇ２＋浓度与ＮＴ组无明显差别。结论原发性高血压患者细胞膜Ｎａ＋－Ｋ＋－ＡＴＰ酶和Ｃａ２＋－ＡＴＰ酶活性明显减低，血浆Ｃａ２＋水平明显减低，红细胞内Ｃａ２＋超载。反映膜缺陷和离子运输系统失常与原发性高血压发病有关。而细胞内、外Ｍｇ２＋水平变化与高血压之间的关系须进一步研究。     

糖尿病患者自由基与红细胞膜Na~ -K~ -ATPase、Ca~(2 )-ATPase 损伤的关系

糖尿病患者自由基与红细胞膜Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ、Ｃａ２＋－ＡＴＰａｓｅ损伤的关系严孙杰卓孝福吴长珠王中心潘时中胡雯刘友尧赵淑好红细胞功能和结构异常是糖尿病慢性并发症产生的重要因素，其中红细胞膜Ｎａ＋－Ｋ＋－ＡＴＰａｓｅ、Ｃａ２＋－ＡＴＰａｓｅ活...     

红细胞膜ATP酶活性变化与糖尿病并发症的关系

目的 探讨红细胞胞膜ＡＴＰ酶（ＡＴＰａｓｅ）活性变化与糖尿工发症之间的关系。方法 将９７例糖尿病患者分为三组：Ａ组（无并发症）３７例,Ｂ组（并发酮症酸中毒）１５例,Ｃ组（慢性血管并发症）４５例。红细胞膜Ｎａ＋－Ｋ＝－ＡＴＰａｓｅ活性（红细胞膜ＡＴＰａｓｅ活性）分别用改良的Ｈａｎａｈａｎ法和Ｌｕｔｈｒａ法进行检测,并设４９例健康乾为对照组。结果 与对照组比较,各组糖尿病患工细胞膜ＡＴＰａｓｅ活性均明     

膳食低钙对饲克山病区粮大鼠胰岛素分泌的影响

本实验通过对模拟克山病偏食饲料中补充一定量的钙和硒来观察Wistar大鼠胰岛素(Ins)的变化。结果表明,病区粮组血钙水平最低,仅及常规食(stock)组一半;血清硒(Se),α-VE水平低于Stock组;Ins减少;血清过氧化脂质水平明显高于Stock组;血清GSH-Px活性低,有显著差异。补钙后钙水平升高,Se、α-VE水平变化不大;Ins显著升高。补Se/VE组Se、α-VE水平明显高于EM组。联合补Se/VE和Ca组Se、α-VE水平高于单纯补Se/VE组,有显著差异,Ins升高。补Se/VE、Ca各组可使过氧化脂质水平下降,有显著差异。综合分析结果表明,补Ca各组与EM组比较差异显著,表明膳食钙量对胰岛素影响极大。     

钙硒对模拟克山病偏食喂养大鼠生长激素分泌的影响

模拟克山病偏食饲料及在这种饲料中补充钙和硒对大鼠生长和生长激素的影响。结果表明，这种克山病偏食饲料中除低硒外低钙特别突出，所饲大鼠血清钙水平及全血ＧＳＨ－Ｐｘ活性、血清总蛋白、生长激素明显低于常规食组。在克山病偏食饲料中单纯补钙或硒可明显改善大鼠生长状态及生长激素增多。表明钙和硒在病区粮偏食喂养大鼠所致生长迟缓方面及生长激素的释放中起重要作用。补充钙同时补充硒效果更好。     

钙缺乏对克山病病区粮养大鼠肾脏Ⅰ型T_45′—脱碘酶活性的影响

以克山病病区玉米和黄豆为主,组成偏食低钙及补钙饲料喂养大鼠8周,结果病区粮所饲大鼠生长缓慢,血清总钙含量、肾脏Ⅰ型T_45′—脱碘酶(ID—I)活性、血清T_3浓度及全血和肾脏谷胱甘肽过氧化物酶(GSH—Px)活力显著降低,血清和肾脏脂质过氧化物(LPO)浓度增加。补钙使上述指标显著改善,恢复至常规饲料组水平。提示膳食低钙本身即可抑制ID—I活性,使甲状腺激素(TH)代谢发生障碍,机体抗氧化能力减退。膳食低钙可能参与了克山病发病中的TH代谢障碍过程。     

饲料低硒对大鼠血清VE含量的影响

用分别补充100ppm VE 的大骨节病区低硒粮配制的低硒饲料和加饲料饲硒养并繁殖大鼠,组织学上未发现母代或子代大鼠有肝坏死和骨骼肌病变。在母代大鼠中,低硒组的血硒含量明显地低于加硒组(P<0.01),而血清 VE 含量在低硒与加硒组间几乎相同。提示低硒不影响母代大鼠的血清 VE 含量。在子代大鼠中,各组动物血硒含量的变化与其母代基本相同;而低硒组的血清 VE 含量明显地高于加硒组(P<0.05),并且血清 VE 含量与血硒含量之间呈负相关关系(r=-0.658,P<0.05)。结果表明饲料低硒能使子代低硒大鼠血清 VE 含量增加。     

Platelet and erythrocyte Mg2+, Ca2+, Na+, K+ and cell membrane adenosine triphosphatase activity in essential hypertension in blacks.

OBJECTIVE: To assess the relationship between intracellular Mg2+, Ca2+, Na+ and K+ and cell membrane adenosine triphosphatase (ATPase) activity in normotensive and hypertensive blacks. DESIGN: Intracellular cations and cell membrane ATPase activity were studied in black patients with untreated essential hypertension and age-, weight- and height-matched normotensive controls. Platelet, erythrocyte and serum Mg2+, Ca2+, Na+ and K+ levels as well as platelet and erythrocyte membrane Na+,K(+)-ATPase, Ca(2+)-ATPase and Mg(2+)-ATPase activities were measured in all subjects. METHODS: Intracellular Na+ and K+ were measured by flame photometry and Mg+ and Ca+ by atomic absorption spectrophotometry. Cell membrane ATPase activity was determined by a colorimetric method. RESULTS: The hypertensive group consistently demonstrated depressed activity of each ATPase studied, with significantly lower serum Mg2+, serum K+, erythrocyte Mg2+ and platelet Mg2+ levels compared with the normotensive group. Platelet Na+ and Ca2+ and erythrocyte Ca2+ were significantly elevated in the hypertensive group. In the hypertensive group, mean arterial pressure (MAP) was inversely correlated with platelet and erythrocyte membrane Na+,K(+)-ATPase, Ca(2+)-ATPase and Mg(2+)-ATPase. Serum Mg2+, serum Ca2+ and platelet Mg2+ were negatively correlated with MAP in the hypertensive group whilst erythrocyte and platelet Ca2+ were positively correlated. In the normotensive group, platelet Mg2+ and MAP were negatively, and erythrocyte Ca2+ and MAP, positively correlated. CONCLUSIONS: Black patients with essential hypertension have widespread depression of cell membrane Na+,K(+)-ATPase, Ca(2+)-ATPase and Mg(2+)-ATPase activities with serum and intracellular Mg2+ depletion and cytosolic Na+ and Ca2+ overload, which may reflect an underlying membrane abnormality in essential hypertension. These cellular abnormalities may be related to the defective transport mechanisms that in turn may be aggravated by Mg2+ depletion.     

低硒低维生素E诱导肝细胞凋亡及cAMP和细胞内Ca2+的作用

目的 研究低硒（Ｓｅ）低维生素Ｅ（ＶＥ）能否诱导大鼠肝细胞凋亡及ｃＡＭＰ和细胞内Ｃａ＾２＋所起的作用。方法 以天然的和人工半合成的低Ｓｅ低ＶＥ饲料喂养大鼠１７周,采用流式细胞术检测肝细胞凋亡,采用放免法检测ｃＡＭＰ含量,Ｆｕｒａ－２负载荧光分光光度法测定细胞内Ｃａ＾２＋含量。结果 与补Ｓｅ和ＶＥ组大鼠相比,低Ｓｅ低ＶＥ组大鼠肝细胞凋亡显著增加;ｃＡＭＰ含量明显升高;细胞内Ｃａ＾２＋含量明显升高。结     

高血压病人红细胞ATPase,细胞离子和游离钙的变化

本研究对 39例轻、中度高血压病 (EH)患者 ,通过皂素溶血定磷法测定红细胞ATPase活力 ,原子吸收火焰法测定红细胞离子含量 ,Fura 2 /AM荧光探针测定红细胞 [Ca2 ]i含量 ,并以正常人作对照 ,旨在探讨部分EH的发病机制。结果显示 ,EH组红细胞Ca2 ATPase活力明显降低 ,P <0 .0 1,而Na K ATPase无显著性差异 ,两者之间呈正相关 (r =0 .46 ) ;红细胞Na 和 [Ca2 ] i含量 ,均显著增高 (P <0 .0 1和 0 .0 0 1) ,而细胞K 含量明显降低 ,以致Na /K 比值增大 (均P <0 .0 1)。研究表明 ,EH患者红细胞高Na ,高 [Ca2 ] i及低K ,是膜缺陷及阳离子转运异常的标志或结果 ,是部分EH患者发病的病理基础和分子生物学基础。红细胞Na 泵活力正常 ,Ca2 泵活力抑制 ,可为EH的一种临床类型     

Heart sarcolemmal ATPase and calcium binding activities in rats fed a high cholesterol diet

ATPase and calcium binding activities were studied in sarcolemmal membranes from hearts of male rats fed either a control or 2% cholesterol diet for different time periods. Studies with isolated membrane revealed a significant increase in Na+-K+ ATPase activity, sialic acid content and ATP-independent calcium binding capacity in the presence of 1.25 mM CaCl2 in the 6 week cholesterol fed group. By 12 weeks, Na+-K+ ATPase, Mg2+-ATPase and Ca2+-ATPase activities as well as ATP-independent calcium binding in the presence of 0.05 mM CaCl2 were increased in membranes from cholesterol fed rats. A significant increase (P less than 0.05) in the sarcolemmal cholesterol/phospholipid molar ratio, which is an indicator of a decrease in membrane fluidity, was also noted in the 12 week cholesterol fed group. Concanavalin A, which is believed to decrease membrane fluidity, stimulated both Mg2+ and Ca2+-dependent ATPase activities and increased ATP-independent calcium binding in control sarcolemmal preparations and these changes resembled those observed in the sarcolemma from cholesterol fed rats. Since concanavalin A did not alter the activity of Na+-K+ ATPase, it appears that some of the observed differences in sarcolemmal activities upon cholesterol feeding did not correlate well with changes in membrane order. At 24 weeks, there was a generalized depression in the sarcolemmal ATPase activities of the cholesterol group; both Mg2+ ATPase and Ca2+ ATPase were significantly less than in control.(ABSTRACT TRUNCATED AT 250 WORDS)     

Changes in erythrocyte membrane ATPases and plasma lipid peroxides in upper abdominal surgery under intravenous procaine-balanced anesthesia

AIM To observe the changes in erythrocyte membrane ATPases and plasma lipid peroxides (LPO) patients with in abdominal surgery under intravenous procaine-balanced anesthesia.METHODS By determining the ATPase activities of erythrocyte membrane, effects of upper abdominal surgery under intravenous procaine-balanced anesthesia on the function of erythrocytes were observed in 15 patients undergoing cholecystectomy and gastrectomy (5 males and 10 females, aged 45.9±10.20 years and weighed 60.60kg±11.93kg). All patients were free from severe renal, hepatic, pulmonary, cardiac, metabolic and endocrinological diseases and acute infection for at least 2 weeks before surgery. Patients receiving any drug known to affect carbohydrate metabolism prior to anesthesia were excluded from the study.RESULTS Erythrocyte membrane Na+, K+-ATPase, Mg2+-ATPase, Ca2+, Mg2+-ATPase activities were not significantly changed 60min-90min after incision as compared with 30min before anesthesia, but were decreased markedly 10min and 24 hours after completion of operation (P＜0.01). Plasma lipid peroxides (LPO) were increased significantly 24 hours after surgery (P＜0.01) following an initially marked but transient reduction. Plasma LPO changes were not correlated with erythrocyte membrane ATPase activities, r=-0.0396, -0.0097 and 0.4383, respectively (P＞0.05).CONCLUSION Abdominal surgical trauma under intravenous procaine-balanced anesthesia may be associated with the decreased ATPase activities of erythrocyte membrane and increased LPO in plasma.     

Changes in erythrocyte membrane ATPases and plasma lipid peroxides in upper abdominal surgery under intravenous procaine-balanced anesthesia

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