PARAMAGNETIC AND DIAMAGNETIC DICOPPER（Ⅱ） COMPLEXES WITH DI－SCHIFF BASE DERIVED FROM 2－HYDROXY－1－NAPHTHALDEHYDE AND1，3－DIANINO－2－PROPANOL

ＰＡＲＡＭＡＧＮＥＴＩＣＡＮＤＤＩＡＭＡＧＮＥＴＩＣＤＩＣＯＰＰＥＲ（Ⅱ）ＣＯＭＰＬＥＸＥＳＷＩＴＨＤＩ－ＳＣＨＩＦＦＢＡＳＥＤＥＲＩＶＥＤＦＲＯＭ２－ＨＹＤＲＯＸＹ－１－ＮＡＰＨＴＨＡＬＤＥＨＹＤＥＡＮＤ１，３－ＤＩＡＮＩＮＯ－２－ＰＲＯＰＡＮＯＬ...     

A NEW METHOD FOR PREPARATION OF IRON（Ⅲ） PORPHYRIN OXYANION COMPLEXES－SYNTHESIS OF PERCHLORATE（PORPHYINATO） IRON（Ⅲ）

ＡＮＥＷＭＥＴＨＯＤＦＯＲＰＢＥＰＡＲＡＴＩＯＮＯＦＩＢＯＮ（Ⅲ）ＰＯＲＰＨＹＲＩＮＯＸＹＡＮＩＯＮＯＭＰＬＥＸＥＳ－ＳＹＮＴＨＥＳＩＳＯＦＰＥＲＣＨＬＯＲＡＴＥ（ＰＯＲＰＨＹＩＮＡＴＯ）ＩＲＯＮ（Ⅲ）￥ＸｉｎＨｕａＺＨＯＮＧ；ＹａｏＹｕＦＥＮＧ；Ｊ...     

STUDIES ON THE DECOMPOSITION OF H_2O INTO H_2 WITH OXYGEN-DEFICIENT MAGNETITE

ＳＴＵＤＩＥＳ　ＯＮ　ＴＨＥ　ＤＥＣＯＭＰＯＳＩＴＩＯＮ　ＯＦ　Ｈ_２Ｏ　ＩＮＴＯ　Ｈ_２　ＷＩＴＨ　ＯＸＹＧＥＮ－ＤＥＦＩＣＩＥＮＴ　ＭＡＧＮＥＴＩＴＥＳＴＵＤＩＥＳＯＮＴＨＥＤＥＣＯＭＰＯＳＩＴＩＯＮＯＦＨ_２ＯＩＮＴＯＨ_２ＷＩＴＨＯＸＹＧＥＮ－Ｄ...     

SYNTHESIS AND CHARACTERIZATION OF EPOXYAND ALLYL－TERMINATED POLY（ARYLENEETHERSULPHONE）

ＳＹＮＴＨＥＳＩＳＡＮＤＣＨＡＲＡＣＴＥＲＩＺＡＴＩＯＮＯＦＥＰＯＸＹＡＮＤＡＬＬＹＬ－ＴＥＲＭＩＮＡＴＥＤＰＯＬＹ（ＡＲＹＬＥＮＥＥＴＨＥＲＳＵＬＰＨＯＮＥ）￥ＬｉａｎＬａｉＺＨＡＮＧ；ＹｉＧＵ；ＬｕＸｉａＪＩＡＮＧ；ＸｉｎｇＸｉａｎＣＡＩ（Ｄｅｐ...     

SYNTHESIS OF A TITANIUM－CONTAINING POLYOXOANION ［ZnW_（11）O_（39）Ti（H_2O）］~（6－）AS CATALYST FOR ALKENE EPOXIDATION

ＳＹＮＴＨＥＳＩＳＯＦＡＴＩＴＡＮＩＵＭ－ＣＯＮＴＡＩＮＩＮＧＰＯＬＹＯＸＯＡＮＩＯＮ［ＺｎＷ_（１１）Ｏ_（３９）Ｔｉ（Ｈ_２Ｏ）］~（６－）ＡＳＣＡＴＡＬＹＳＴＦＯＲＡＬＫＥＮＥＥＰＯＸＩＤＡＴＩＯＮ￥ＭｉｎｇＸｉｕＬＩ；ＪｉｎｇＦｕＬＩＵ；Ｙｉｎｇ...     

A CONVERGENT SYNTHESIS OF（E．E，E）－3，7，13－TRIMETHYL－6－（i－PROPENYL）－7，14－DIHYDROXY－2，8，12－TETRADECATRIEN－1－METHYLAL

ＡＣＯＮＶＥＲＧＥＮＴＳＹＮＴＨＥＳＩＳＯＦ（Ｅ．Ｅ，Ｅ）－３，７，１３－ＴＲＩＭＥＴＨＹＬ－６－（ｉ－ＰＲＯＰＥＮＹＬ）－７，１４－ＤＩＨＹＤＲＯＸＹ－２，８，１２－ＴＥＴＲＡＤＥＣＡＴＲＩＥＮ－１－ＭＥＴＨＹＬＡＬ￥ＹｉｑｉａｎＷａｎ；ＪｉｎｇＹ...     

FACILE AND HIGHLY STEREOSELECTIVE SYNTHESIS OF （2Z）－α－PHENYLSELENO－α，β－UNSATURATED KETONES

ＦＡＣＩＬＥＡＮＤＨＩＧＨＬＹＳＴＥＲＥＯＳＥＬＥＣＴＩＶＥＳＹＮＴＨＥＳＩＳＯＦ（２Ｚ）－α－ＰＨＥＮＹＬＳＥＬＥＮＯ－α，β－ＵＮＳＡＴＵＲＡＴＥＤＫＥＴＯＮＥＳ￥ＺｈｉＺｈｅｎＨＵＡＮＧ；ＸｉａｎＨＵＡＮＧ；ＹａｏＺｅｎｇＨＵＡＮＧ（Ｄｅｐａｒ...     

SYNTHESIS OF DI－（2＇－DEOXY－2＇－FLUORO）PYRIMIDINENUCLEOSIDE PHOSPHATES AND PHOSPHOROTIOATES

ＳＹＮＴＨＥＳＩＳＯＦＤＩ－（２＇－ＤＥＯＸＹ－２＇－ＦＬＵＯＲＯ）ＰＹＲＩＭＩＤＩＮＥＮＵＣＬＥＯＳＩＤＥＰＨＯＳＰＨＡＴＥＳＡＮＤＰＨＯＳＰＨＯＲＯＴＩＯＡＴＥＳＺｈｅｎｇＦｕＷＡＮＧ；ＹｉＢｉｎｇＺＨＡＮＧ；ＹａｏＱｕａｎＣＨＥＮ（Ｌａｂｏｒａ...     

SYNTHESES AND PROPERTIES OF POLY（N－ISOPROPYLACRYLAMIDECO－N－ACRYLOXYSUCCINIMIDE）AND ITS IgG－CONJUGATE

ＳＹＮＴＨＥＳＥＳＡＮＤＰＲＯＰＥＲＴＩＥＳＯＦＰＯＬＹ（Ｎ－ＩＳＯＰＲＯＰＹＬＡＣＲＹＬＡＭＩＤＥＣＯ－Ｎ－ＡＣＲＹＬＯＸＹＳＵＣＣＩＮＩＭＩＤＥ）ＡＮＤＩＴＳＩｇＧ－ＣＯＮＪＵＧＡＴＥ￥ＹｉｎｇＷＡＮＧ；ＲｅｎＸｉＺＨＵＯ（Ｄｅｐａｒｔｍｅｎｔｏ...     

THE STACKING INERACTION OF TERNARY COMPLEXES OF Zn(ATP)~(2-)AND PYRIDINE-LIKELIGANDS

ＴＨＥ　ＳＴＡＣＫＩＮＧ　ＩＮＥＲＡＣＴＩＯＮ　ＯＦ　ＴＥＲＮＡＲＹ　ＣＯＭＰＬＥＸＥＳ　ＯＦ　Ｚｎ（ＡＴＰ）~（２－）ＡＮＤ　ＰＹＲＩＤＩＮＥ－ＬＩＫＥＬＩＧＡＮＤＳＴＨＥＳＴＡＣＫＩＮＧＩＮＴＥＲＡＣＴＩＯＮＯＦＴＥＲＮＡＲＹＣＯＭＰＬＥＸＥＳＯ?..     

Studies on the formation of aliphatic aldehydes in the plasma and liver of vitamin E-deficient rats

The effects of vitamin E (E) deficiency on the formation of aliphatic aldehydes in rat plasma and liver were studied. Three-week-old Wistar male rats were fed either an E supplemented diet (2-ambo-alpha-tocopheryl acetate 20 mg/kg diet, designated as E supplemented diet group) or an E deficient diet (E deficient diet group). After 8 weeks, n-hexanal and (E)-4-hydroxy-2-nonenal (4-HN) in the plasma of the E deficient diet group were found to be 2.0 and 2.5-fold greater than those of the E supplemented diet group, respectively. The contents of aldehydes such as n-pentanal, n-hexanal, 4-HN in the liver were also significantly higher in the E deficient diet group than in the E supplemented diet group. These results indicate that some aldehydes, arising possibly from lipid peroxides, are produced and detected in the plasma and liver of rats under the condition like E deficiency. In this study we further found that the activity of the liver aldehyde dehydrogenase (ALDH, EC 1.2.1.3) was significantly changed; 5 and 8 weeks after the start it was lower in the E deficient diet group when compared to that in the E supplemented diet group. The decrease of enzyme activity was related to the increase of aldehydes such as n-hexanal in the liver. the aldehyde increase in the plasma of the E deficient diet group was thought to raise the injury of cells, namely, a strong hemolysis on erythrocytes prepared from the blood of rats fed the E deficient diet.     

补充富硒小麦和富硒玉米对大鼠血硒状态影响的对比观察

给克山病病区粮喂养６周的大鼠补充富硒小麦或富硒玉米,观察了大鼠血硒和血ＣＳＨ－Ｐｘ活性的变化。结果显示,补充富硒小麦和富硒玉米均可有效地升高大鼠血浆硒、红细胞硒和红细胞ＧＳＰ－Ｐｘ活性,且两种形式硒的作用效果相同;停止补硒后,补充富硒小麦组大鼠的红细胞和红细胞ＧＳＨ－Ｐｘ活性均显著高于补充富硒玉米组大鼠。表明给大鼠补充富硒小麦较补充富硒玉米好。     

Effect of lead poisoning on the thiamine status and function in liver and blood of rats

Three groups of Sprague-Dawley rats were fed a thiamine deficient diet, which was supplemented by daily subcutaneous injections of a minimum requirement of thiamine, and treated with lead(II) acetate in different molar ratios to thiamine (1:1, 2:1, 10:1) for 5 and 9 months, respectively. The prolonged administration of lead(II) acetate decreases the thiamine level in lead-treated rats and diminishes the enzymatic activity of pyruvate dehydrogenase as well as that of transketolase. The thiamine level in the liver decreased by 30 to 40% compared with a reference group and the activity of the erythrocyte transketolase diminished by 5 to 40%. The level of the blood pyruvate increased by about 20% and the rate of the oxidative decarboxylation of pyruvate by liver mitochondria decreased.     

低硒大骨节病区粮对大鼠组织中超氧化物歧化酶和脂质过氧化物的影响

应用低硒大骨节病区粮，病区粮加硒和非病区粮饲料喂养大鼠，测定大鼠血清以及心、肝组织中的超氧化物歧化酶(SOD)的活性和肝组织中脂质过氧化物(TBA)含量，观察低硒大骨节病区粮对大鼠体内脂质代谢的影响，结果表明，病区粮组肝组织TBA较病区粮加硒组与非病区粮组显著升高，病区粮加硒组与非病区粮组肝TBA含量无显著性差异，SOD活性变化不明显，这些说明大鼠体内脂质代谢紊乱似与低硒有关，加硒可改善这种代谢。     

富硒肝对大鼠GSH-Px、GSH和游离巯基含量的影响

为观察富硒肝和亚硒酸钠对大鼠抗氧化能力的影响。将6只大鼠分为两组:A组用亚硒酸钠[按Se元素计,6μg/(只.d)]灌胃,B组用富硒肝[按Se元素计,6μg/(只.d)]灌胃。于灌胃第0、4、8、12、16、20天内眦采血,测定血浆和血细胞内液中GSH-Px活力以及GSH、游离巯基的含量。结果表明:①给药20 d后A、B组血浆和血细胞内液GSH-Px活力和GSH含量均明显高于灌胃前(P0.05);②A、B组血浆中游离巯基的含量略有增加,而血细胞内含量则大幅降低(P0.05)。结论:经口给予富硒肝可诱导大鼠产生较多的抗氧化物质,增强大鼠的抗氧化能力。其作用可达同剂量亚硒酸钠水平。     

Time dependence of distribution of radioactive trace elements in Se-deficient rats: Application of the multitracer technique

The uptake and the distribution of radioactive trace elements in Se-deficient rats were examined by the multitracer technique, which can be used to evaluate the behavior of many elements under the same experimental conditions. The uptake of Se was larger in the brain, spleen, and testicles of the Se-deficient rats than in those of the normal ones. The uptake of As, Fe, and Sc was larger in the liver of Se-deficient rats than in that of normal ones. In the bone, the uptake of Zr of Se-deficient rats was larger than that of normal ones. Selenium is known to be in a competitive or synergetic relationship with several metals. From the present results on Sc and Zr, it was newly cleared up that there is also some interaction between those elements and Se.     

Effects of Siqi Decoction on Concentration of Nitric Oxide and Activity of Nitric Oxide Synthase in Blood Serum of Rats with Myocardial Ischemia

To study the effects of Siqi decoction on rats with Myocardial Ischemia, the model of Myocardium Ischemia was made for the Wistar rats cured with posterior pituitary injection through vein in tail. Siqi decoction, Diaoxinxuekang（DK） and Fufangdanshenpian（FD）, the latter two drugs of which were effective TCM drugs of anti-Myocardial Ischemia at present, were administrated to the rats with Myocardium Ischemia for 5 days to compare the effect of anti-Myocardium Ischemia as reference drugs by measuring the changes of NO concentration and activity of NOS in the rat blood serum with Myocardial Ischemia. There was a remarkable increase in the NO concentration and activity of NOS in serum in Siqi decoction groups compared with those in control group（p〈0.05）. The results of the prevention group in experiment of Siqi decoction are better than those of the cure group. Siqi decoction was really fit for Myocardium Ischemia via increasing NO concentration by stimulating the activity of NOS in serum. The effect of Siqi decoction against Myocardium Ischemia in preventive group is better than the curative that of Siqi decoction in the curative group.     

Induction of hepatic inducible nitric oxide synthase by cholesterol in vivo and in vitro

Cholesterol-rich diet impairs endothelial NO synthase (eNOS) and enhances inducible NOS (iNOS) expression. In this study, we investigated effects of cholesterol on iNOS expression in high-fat-fed rat models, HepG2 and RAW264.7 cells. The high-fat diet increased the plasma total cholesterol level 6-7 fold and low-density lipoprotein cholesterol level (LDL-C) approximately 70 fold and slightly increased the level of lipid peroxidation as determined by thiobarbituric acid-reactive substance assay. The high-fat diet also increased plasma nitric oxide (NO) concentrations up to 5 fold, and induced iNOS mRNA expression in liver. The contractile responses of the endothelium-denuded thoracic aortic rings to phenylephrine were significantly damaged in high-fat-fed rats when assessed by organ chamber study. Treatment with estrogen for 4 days failed to reduce iNOS expressions as well as aortic contractility, although it improved lipid profiles. In cultured HepG2 or murine macrophage RAW264.7 cells, 3 days treatment with either 25-hydroxycholesterol or 7-ketocholesterol induced iNOS mRNA expression, as determined by RT-PCR. Our data suggested that the chronic exposure of hepatocytes and macrophage cells to high concentration of cholesterol or oxysterols may induce iNOS expression and subsequent synthesis of NO, which may be important in the pathogenesis of atherosclerosis.     

重复性"饥饿/再投喂"对大鼠脂代谢及主动脉影响的研究

为探讨经过重复性"饥饿/再投喂"方式处理后大鼠摄取高脂食物时有关体质量控制与能量平衡调节的瘦素(leptin)和神经肽Y(NPY)的表达变化,设计"重复性饥饿1 d/再投喂基础饲料1 d,持续6周"的饲喂方式处理动物模型,6周后改为每天喂以高脂饲料(高脂模型组),另设高脂对照组和基础对照组,喂养至12周,测定了血脂水平...     

高硒情况下维生素E对老龄大鼠血清中抗氧化作用的影响

研究了高Se或高维生素E下，老龄大鼠体内抗氧化活性的变化以及高Se下维生素E对其体内抗氧化水平的影响。将十二月龄Wistar大鼠32只随机分成4组：（1）正常饲料组；（2）高Se饲料组；（3）高维生素E饲料组；（4）高Se高维生素E饲料组。饲至十周末，处死大鼠，按试剂盒要求取其血液制成血清测GSH－Px,SOD活性，MDA含量。结果表明，高Se或高维生素E下饲养下的大鼠与对照组比较，血清中GSH－Px活性升高（P＜0．05）。SOD活性未见改变，MDA含量分别减少50％和56％，有显著差异（P＜0．01）；维生素E与高Se合用与高Se组比较能进一步同GSH－Px,SOD活性（P＜0．01）。结论：高Se会升高老龄大鼠的抗氧化活性，而与维生素E合用更加升高老龄大鼠血液中抗氧化活性。