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1.
This study was undertaken to evaluate the effects of n-3 fatty acid supplementation on blood glucose, lipid profile and cytokines
in humans. Twenty adult healthy subjects were supplemented with 1g/day fish oil concentrate capsules for 2 weeks. Fasting
blood samples were taken at baseline and again after 2 week intervention. Fish oil supplementation significantly lowered fasting
serum concentrations of total cholesterol, triacylglycerol, very low density lipoprotein and low density lipoprotein (P <
0.01). Also high density lipoprotein increased significantly compared with baseline value (P < 0.01). Fish oil did not significantly
altere the fasting blood glucose concentration but significantly reduced the serum cytokines (P < 0.001). This study demonstrated
that eicosapentanoic acid (EPA) and docosahexaenoic acid (DHA) supplementation altered serum lipids, lipoprotein and cytokine
concentrations in normal human subjects even at the small dose of 660 mg of EPA plus DHA per day. It appears that EPA plus
DHA can be a safe and perhaps beneficial supplement to inflammatory diseases. 相似文献
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Membrane lipid and protein composition was compared in erythrocytes from iron deficiency anemia (IDA) and heterozygous beta
thalassemia patients. The study was planned to correlate the influence of iron deficiency with the intrinsic defect of the
heterozygous condition on the membrane structural integrity as well as to investigate whether there are differences in membrane
changes between the two conditions. Results indicate high levels of saturated fatty acids and low unsaturated fatty acids
in both disorders although arachidonic acid and the unsaturation index were lower in heterozygous thalassemia than IDA. Nevertheless,
neither of the conditions provoked any alterations in membrane protein or glycophorin suggesting alterations in the lipid
moiety only. Present findings indicate that irrespective to the etiology, both, iron deficiency and the heterozygous condition
show a common pattern of lipid derangement, which may in turn result in increased membrane rigidity and decreased cellular
deformability. 相似文献
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以遗传性非胰岛素依赖型糖尿病KK小鼠为动物模型,研究钒对雌雄性糖尿病小鼠的降糖作用.实验选择3周龄的KK小鼠,雌雄各半,通过自由饮水方式给予雌雄性小鼠0mg/L、0.1mg/L和100mg/L的钒酸铵,实验周期为17周,观察不同剂量钒酸铵对血糖、甘油三酯和总胆固醇代谢的影响.研究结果表明,01mg?L钒酸铵对雌雄性小鼠的血糖水平和血液生化指标没有明显的影响,高剂量钒酸铵(100mg?L)明显降低雄性糖尿病小鼠的饮水量、血糖水平、糖基化血红蛋白、甘油三酯和总胆固醇等,葡萄糖耐量水平得到显著改善,对糖尿病小鼠的肝肾功能没有影响.结果提示钒酸铵对雌性小鼠和雄性小鼠具有降血糖作用,其作用效果有明显的性别差异. 相似文献
4.
Ratan Kumar 《Indian journal of clinical biochemistry : IJCB》1998,13(2):87-91
Effect of L-carnitine supplementation on myocardial free fatty acid oxidation,in vitro, in offsprings born of hypothyroid and hyperthyroid mothers was studied in rats. L-carnitine supplementation stimulated myocardial
fatty acid oxidation during gestational period in offspring born of control and hyperthyroid mothers. In contrast L-carnitine
supplementation induced stimulation in myocardial fatty acid oxidation was very less in fetuses born of hypothyroid mothers.
However, in neonates born of hypothyroid mothers L-carnitine stimulated myocardial fatty acid oxidation to a great extent.
The results suggested that during maternal hypothyroidism low availability of thyroid hormones to fetuses through maternal
circulation and availability of less carnitine to neonates due to hypolactation might be responsible for decreased myocardial
free fatty acid utilization. In neonates born of hypothyroid mothers and with cardiac energy insufficiency parenteral carnitine
supplementation might be of great help to prevent mortality and morbidity of such offsprings. 相似文献
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划定城镇开发边界有助于保护城市周边和城市内部重要生态区域和自然资源;引导城市高效、有序开发建设,防止城市低效蔓延;优化城市建设空间格局,提高城市土地资源节约集约利用水平。本文基于经济与生态双重视角定义了一个建设适宜性指数,通过计算用地单元建设适宜性指数,并设定决定是否纳入开发边界内的适宜性指数阈值,对广州市番禺区这一典型大都市边缘城镇的开发边界进行了划定,在建设用地规模保持不变、有所增加、有所减小等3种不同发展预期下,得出了3种相应的划定方案。结果显示:①番禺区建设适宜性指数较高的区域与现有建成区吻合程度较高,包含了位于番禺区东北部、西部部分尚未开发建设的战略储备用地。建设适宜性指数较低区域主要包含了山林、水源保护区、生态廊道、永久基本农田等;②开发边界划定结果中生态廊道体现明显,将番禺区建设用地分隔为若干组团,且连片的建设用地中有足够的“生态留白”;③开发边界划定结果与现状建设用地存在一定差异,这有助于引导优化城市建设空间格局、提高城市土地资源节约集约利用水平;3种不同发展预期下开发边界划定方案的差异主要在于对经济价值和生态效益同时较高或较低的用地单元的取舍。大都市边缘城镇由于其自身特征,在划定城镇开发边界时应兼顾引导、保护和优化的功能。本文采用的城镇开发边界划定方法综合考虑了经济和生态两个方面,并且具备一定灵活性,适宜在大都市边缘城镇的开发边界划定中采用。 相似文献
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Samanta L Panigrahi J Bhanja S Chainy GB 《Indian journal of clinical biochemistry : IJCB》2010,25(4):393-397
The present study was designed to compare the potential of turmeric and its active principle curcumin on T3-induced oxidative stress and hyperplasia. Adult male Wistar strain rats were rendered hyperthyroid by T3 treatment (10 μg · 100 g−1 · day−1 intraperitoneal for 15 days in 0.1 mM NaOH) to induce renal hyperplasia. Another two groups were treated similarly with T3 along with either turmeric or curcumin (30 mg kg−1 body weight day−1 orally for 15 days). The results indicate that T3 induces both hypertrophy and hyperplasia in rat kidney as evidenced by increase in cell number per unit area, increased protein
content, tubular dilation and interstitial edema. These changes were accompanied by increased mitochondrial lipid peroxidation
and superoxide dismutase activity without any change in catalase activity and glutathione content suggesting an oxidative
predominance. Both turmeric and curcumin were able to restore the level of mitochondrial lipid peroxidation and superoxide
dismutase activity in the present dose schedule. T3-induced histo-pathological changes were restored with turmeric treatment whereas curcumin administration caused hypoplasia.
This may be due to lower concentration of curcumin in the whole turmeric. Thus it is hypothesized that regulation of cell
cycle in rat kidney by T3 is via reactive oxygen species and curcumin reveres the changes by scavenging them. Although the response trends are comparable
for both turmeric and curcumin, the magnitude of alteration is more in the later. Turmeric in the current dose schedule is
a safer bet than curcumin in normalizing the T3-induced hyperplasia may be due to the lower concentration of the active principle in the whole spice. 相似文献