目的探讨乌司他丁(UTI)对大鼠心肺复苏(CPR)后脑组织白细胞介素(IL)-1β、肿瘤坏死因子(TNF)-α水平以及心功能的影响。方法随机将30只SD大鼠分为空白对照组、CPR组以及UTI组各10只。应用窒息法建立大鼠心脏骤停模型,进行CPR,自主循环恢...目的探讨乌司他丁(UTI)对大鼠心肺复苏(CPR)后脑组织白细胞介素(IL)-1β、肿瘤坏死因子(TNF)-α水平以及心功能的影响。方法随机将30只SD大鼠分为空白对照组、CPR组以及UTI组各10只。应用窒息法建立大鼠心脏骤停模型,进行CPR,自主循环恢复(ROSC)后6 h,检测各组左室收缩压(LVSP)、左心室舒张末期压(LVEDP)水平及左心室压力上升(+dp/dtmax)、下降最大速率(-dp/dtmax)。ROSC后24 h处死大鼠后取出心、脑组织,采用酶联免疫吸附法(ELISA)检测脑组织中IL-1β、TNF-α的含量,并采用投射电镜观察心肌细胞超微结构的变化。结果 ROSC后6 h CPR组、UTI组LVSP及±dp/dtmax明显降低(P<0.05),LVEDP明显升高(P<0.05)。与空白对照组相比,ROSC后6 h CPR组、UTI组LVSP、+dp/dtmax及-dp/dtmax均显著下降(P<0.05),而LVEDP显著上升(P<0.05);与CPR组相比,ROSC后6 h UTI组LVSP上升,LVEDP下降(P<0.05)。CPR组、UTI组IL-1β、TNF-α含量均显著高于空白对照组(P<0.05),而UTI组IL-1β、TNF-α含量均显著低于CPR组(P<0.05)。结论 UTI可以抑制体内IL-1β和TNF-α的表达,同时减轻心肌组织的损伤,改善CPR后心功能。展开更多
Background: The relationship between growth hormone (GH) and cytokines remains unclear. Several studies have suggested that GH increases tumor necrosis factor (TNF)-α production in both children and adults. However, ...Background: The relationship between growth hormone (GH) and cytokines remains unclear. Several studies have suggested that GH increases tumor necrosis factor (TNF)-α production in both children and adults. However, a number of studies have demonstrated a negative correlation between GH and TNF α. The aim of this study is to explore the relationship between endogenous GH secretion and certain pro and anti-inflammatory cytokines in short children undergoing GH stimulation testing for evaluation for GH deficiency. Methods: Plasma growth hormone, TNF α, CRP, IL-6, IL1-β, IL-4 and IL-10 levels are obtained at baseline and every 30 minutes for 150 minutes following two provocative agents (clonidine, and either arginine or glucagon). Results: Among the 23 children, 7 are found to be GH deficient. No significant differences in baseline TNF α levels are found between GH deficient and GH sufficient children. No correlation is identified between TNF α levels and GH levels during stimulation testing. Furthermore, no relationship is found between GH and pro-inflammatory cytokines or GH and anti-inflammatory cytokines. Conclusion: Our results do not demonstrate an acute relationship between endogenous GH secretion and the cytokines examined.展开更多
文摘目的探讨乌司他丁(UTI)对大鼠心肺复苏(CPR)后脑组织白细胞介素(IL)-1β、肿瘤坏死因子(TNF)-α水平以及心功能的影响。方法随机将30只SD大鼠分为空白对照组、CPR组以及UTI组各10只。应用窒息法建立大鼠心脏骤停模型,进行CPR,自主循环恢复(ROSC)后6 h,检测各组左室收缩压(LVSP)、左心室舒张末期压(LVEDP)水平及左心室压力上升(+dp/dtmax)、下降最大速率(-dp/dtmax)。ROSC后24 h处死大鼠后取出心、脑组织,采用酶联免疫吸附法(ELISA)检测脑组织中IL-1β、TNF-α的含量,并采用投射电镜观察心肌细胞超微结构的变化。结果 ROSC后6 h CPR组、UTI组LVSP及±dp/dtmax明显降低(P<0.05),LVEDP明显升高(P<0.05)。与空白对照组相比,ROSC后6 h CPR组、UTI组LVSP、+dp/dtmax及-dp/dtmax均显著下降(P<0.05),而LVEDP显著上升(P<0.05);与CPR组相比,ROSC后6 h UTI组LVSP上升,LVEDP下降(P<0.05)。CPR组、UTI组IL-1β、TNF-α含量均显著高于空白对照组(P<0.05),而UTI组IL-1β、TNF-α含量均显著低于CPR组(P<0.05)。结论 UTI可以抑制体内IL-1β和TNF-α的表达,同时减轻心肌组织的损伤,改善CPR后心功能。
文摘Background: The relationship between growth hormone (GH) and cytokines remains unclear. Several studies have suggested that GH increases tumor necrosis factor (TNF)-α production in both children and adults. However, a number of studies have demonstrated a negative correlation between GH and TNF α. The aim of this study is to explore the relationship between endogenous GH secretion and certain pro and anti-inflammatory cytokines in short children undergoing GH stimulation testing for evaluation for GH deficiency. Methods: Plasma growth hormone, TNF α, CRP, IL-6, IL1-β, IL-4 and IL-10 levels are obtained at baseline and every 30 minutes for 150 minutes following two provocative agents (clonidine, and either arginine or glucagon). Results: Among the 23 children, 7 are found to be GH deficient. No significant differences in baseline TNF α levels are found between GH deficient and GH sufficient children. No correlation is identified between TNF α levels and GH levels during stimulation testing. Furthermore, no relationship is found between GH and pro-inflammatory cytokines or GH and anti-inflammatory cytokines. Conclusion: Our results do not demonstrate an acute relationship between endogenous GH secretion and the cytokines examined.
