排序方式: 共有221条查询结果,搜索用时 15 毫秒
211.
212.
Objective To investigate the effects of Edaravone (Ed) on p38mitogen-activated protein kinases/Caspase-3 (p38MAPK/Caspase-3) pathway following the diffuse injury of brain (DIB) in rats, as well as the protective effects of Edaravone on traumatic injury of brain (TIB). Method The TIB models were established by using Marmarou's method in adult male Spraque-Dawlley rats. A total of 250 rats were divided (random number)9nto control group, model group, low-dose Edaravone treatment group and high-dose Edaravone treatment group.The rats were sacrificed separately 1, 6, 24, 48 and 72 hours after DIB and the brain tissues of rats were taken.The morphological changes of neuron in hippocampus region were observed by using Nissl staining. The levels of phosphorylated p38MAPK and Caspase-3 were detected by using immunohistochemistry and Western blot. The learning and memory functions were determined with Morris water maze test from the 3rd to 7th day after injury.Results Compared with control group, some neurons displayed histopathological changes of necrosis and apoptosis in rats of model group. The levels of phosphorylated p38MAPK significantly increased in 1, 6, 24, and 48 hours after injury in rats of model group ( P < 0.05), but there was no statistic significance in increase 72 hours later ( P> 0.05). The levels of Caspase-3 significantly increased in 6, 24, 48 and 72 hours after injury in rats of model group ( P < 0.05), but there was no significant difference in increase in one hour after injury (0.59±0.29 vs.0.40±0.17, P >0.05).In the Morris water maze test from the 3rd to 6th day, the latency to find the platform significantly prolonged in rats of model group ( P < 0.05), and the numbers of passing the platform by rats decreased on the 7th day (2.28 ± 1.18 vs. 8.20 ± 1.52, P < 0.05). Compared with model group, the levels of phosphorylated p38MAPK in 6, 24 and 48 hours after injury in low-dose Edaravone group were lower (P <0.05), but there was no statistical difference in one hour after injury ( P > 0.05). The levels of Caspase-3 in 6,24, 48 and 72 hours after injury in rats of low-dose Edaravone group were lower than those of model group ( P <0.05). The latency to find the platform significantly shortened ( P < 0.05) and the numbers of passing the platform by rats increased (4.17 ± 1.15 vs. 2.28 ± 1.18, P < 0.05) in low-dose Edaravone group. The above variables changed more prominently in high-dose Edaravone group. Conclusions Edaravone attenuates p38MAPK pathway activation, lowers the level of Caspase-3 following DIB and protects the rats against the traumatic injury of brain. 相似文献
213.
目的 观察依达拉奉(Edaravone)对弥漫性脑创伤后大鼠海马区p38丝裂酶原活化蛋白激酶/半胱氨酸蛋白酶-3(p38MAPK/Caspase-3)信号途径的影响,探讨依达拉奉的脑保护作用.方法 在河北省联合大学附属医院神经外科实验室应用Mamarou's法建立成年雄性Sprague-Dawlley大鼠弥漫性脑创伤模型,250只实验动物随机(随机数字法)分为对照组、模型组、低剂量依达拉奉治疗组(尾静脉注射给药,剂量5 mg/kg),高剂量依达拉奉治疗组(尾静脉注射给药,10 mg/kg).各组分别在伤后1,6,24,48,72 h取脑组织,尼氏染色检测海马区神经细胞组织形态变化;免疫印迹和免疫组化法检海马区磷酸化p38MAPK和Caspase-3的表达;伤后第3-7天应用水迷宫对大鼠学习记忆功能进行评定.SPSS 13.0对实验数据进行统计分析,组间进行重复设计方差分析,以P<0.05为差异具有统计学意义.结果 与对照组比较,模型组大鼠海马区部分神经细胞出现变性坏死改变;磷酸化p38MAPK表达在1,6,24,48 h显著增高(P<0.05)、72 h差异无统计学意义;Caspase-3表达在1 h差异无统计学意义(P>0.05),6,24,48,72 h增高(P<0.05);水迷宫测试中第3,4,5,6天动物搜索安全岛潜伏期延长(P<0.05),第7天穿越原平台位置的次数减少(P<0.05).与模型组比较,低剂量Edaravone干预组中,脑组织形态结构损伤程度减轻,1 h磷酸化p38MAPK表达下降不显著[(1.66±0.80) vs.(1.85±0.86),P>0.05],6,24,48 h显著下降(P<0.05);6,24,48,72 h Caspase-3表达显著降低(P<0.05);大鼠搜索安全岛潜伏期缩短(P<0.05),穿越原平台位置的次数增多[(4.17±1.15) vs.(2.28±1.18),P<0.05];高剂量Edaravone组上述指标变化则更为显著(P<0.05).结论 Edaravone抑制伤后p38MAPK信号途径的活化,降低Caspase-3表达,对脑创伤有保护作用. 相似文献
214.
215.
216.
目的:调查唐山市老年人躯体健康现状,为发展更有利于老年人健康的社区卫生提供理论依据。方法2012年3-9月采用多阶段随机整群抽样的方法,选择唐山市1个社区和3个自然村落老年居民2548名,采用生存质量测定表简表实施面对面的调查。结果2548名老年人中50.86%自我评价健康状态好,18.21%自评健康差,平均躯体健康得分(57.00±13.32)分,低于全国水平(64.90±18.60)分,差异有统计学意义(t=-29.951,P<0.01);农村、女性、≥90岁、丧偶老年人躯体健康得分分别为(54.21±12.04),(56.11±13.17),(50.26±15.25),(54.78±13.97)分,低于本组其他人群,差异均有统计学意义(t/F值分别为6.484,12.336,13.947,4.217;P<0.05)。结论老年人躯体健康状况较差,农村地区、女性、90岁以上及丧偶老年人的躯体健康应受到社区医务人员关注。 相似文献
217.
218.
目的了解河北省各地区城乡妇女围绝经期症状与抑郁程度及其影响因素,以便采取措施提高围绝经期妇女健康水平及生活质量。方法选取河北省7个地区,按照城乡分层,共抽取700名45~55岁妇女,进行问卷调查、Kupperm an评分。有效问卷627份。结果627名调查对象中,围绝经期综合征总发生率为95.22%,轻度症状占22.65%,中度症状占61.08%,重度症状占11.48%;抑郁总发生率为31.26%,可疑抑郁者占9.89%,肯定抑郁者占21.37%;城市、无工作、伴侣患病离异丧偶、婚姻质量差、居住环境欠佳、与子女及邻里同事关系差、月经紊乱、无社会或家庭支持发生围绝经期综合征的频率或程度高,差异有统计学意义(P<0.05或P<0.01);围绝经期综合征程度越重,抑郁发生率越高,差异有统计学意义(P<0.01)。结论河北省城乡妇女围绝经期综合征及抑郁发生率高,影响因素复杂,应引起重视。 相似文献
219.
220.
目的调查河北省廊坊市45~60岁农村女性隔代照顾者的围绝经期综合征现状并分析其影响因素,寻找改善该人群健康状况的可控点。方法 2019年10月-2020年5月,采用多阶段分层整群抽样的方法,抽取河北省廊坊市农村45~60岁需要照顾孙辈的女性,应用一般资料调查问卷调查个人情况、家庭情况、隔代照顾情况等;采用改良版Kupperman评分表进行围绝经期综合征评测。结果本次共调查农村女性隔代照顾者536人,平均年龄(53.16±4.09)岁,围绝经期综合征得分为(10.40±5.43),围绝经期综合征发生率为78.73%。分层回归结果显示家庭情况和隔代照顾情况能够独立解释12.1%的围绝经期综合征。结论影响农村女性隔代照顾者围绝经期综合征的因素众多,应关注家庭情况、隔代照顾情况并采取相应的干预措施提高该人群的健康水平。 相似文献