目的 探讨雌激素通过雌激素受体 (estrogen receptor ER )调节细胞凋亡的可能机制。方法 利用荧光免疫组织化学的方法,研究了 10例阿尔茨海默病 Alzheim er's disease AD 患者和 10例对照受试者海马中 Bcl-2的分布及 Bcl-2和 ER α...目的 探讨雌激素通过雌激素受体 (estrogen receptor ER )调节细胞凋亡的可能机制。方法 利用荧光免疫组织化学的方法,研究了 10例阿尔茨海默病 Alzheim er's disease AD 患者和 10例对照受试者海马中 Bcl-2的分布及 Bcl-2和 ER α的共存现象。结果 Bcl-2主要在 AD 患者和对照受试者海马 CA 3和 CA 4亚区的锥体层神经元中广泛表达,且多分布于胞质和突起,胞核较少。星型胶质细胞中也可检测到 Bcl-2免疫活性,AD 组中大量表达,而对照组中很少表达。免疫组织化学荧光双标显示,大部分被 Bcl-2免疫标记的神经元也表达 ER α。结论 在 AD 患者海马的神经元和星型胶质细胞中,雌激素可能作为细胞凋亡的一个调节子,通过 ER α来调节 Bcl-2表达,行使其神经保护作用。展开更多
Objective: To observe the effects of electroacupuncture on hippocampal and cortical apoptosis in a mouse model of cerebral ischemia-reperfusion injury. Methods: Mouse models established by repeated cerebral ischemia-r...Objective: To observe the effects of electroacupuncture on hippocampal and cortical apoptosis in a mouse model of cerebral ischemia-reperfusion injury. Methods: Mouse models established by repeated cerebral ischemia-reperfusion, followed by electroacupuncture at Shenshu, Geshu, and Baihui points. The control group mice were intragastrically administered Hydergine. On day 1 and 7 post-treatment, hippocampal and cortical apoptosis was detected by terminal-deoxynucleotidyl transferase mediated dUTP nick-end labeling (TUNEL), and apoptosis images in the hippocampal CA1 zone and cortical area were analyzed. Results: In the model group, apoptotic cells were detected one day after treatment and some cellular fibers were disarrayed. By day 7 post-treatment, there was an increase in the number of apoptotic cells in the hippocampal CA1 region. In addition, there were apoptotic cells in the cortical area, the cortical layers were thinner with localized neuronal loss and sieve-like lymphocyte infiltration, as well as glial cell proliferation and visible infarct lesions. However, in the Hydergine and electroacupuncture groups, there was a small number of apoptotic cells. At 7 days post-treatment in the model group, field number, numerical density on area, and surface density were increased. However, in the Hydergine and electroacupuncture groups these parameters were decreased (P<0.01), with a significant difference between the two treatment groups (P<0.01). Conclusion: Electroacupuncture treatment inhibited apoptosis and provided neuroprotection.展开更多
文摘目的 探讨雌激素通过雌激素受体 (estrogen receptor ER )调节细胞凋亡的可能机制。方法 利用荧光免疫组织化学的方法,研究了 10例阿尔茨海默病 Alzheim er's disease AD 患者和 10例对照受试者海马中 Bcl-2的分布及 Bcl-2和 ER α的共存现象。结果 Bcl-2主要在 AD 患者和对照受试者海马 CA 3和 CA 4亚区的锥体层神经元中广泛表达,且多分布于胞质和突起,胞核较少。星型胶质细胞中也可检测到 Bcl-2免疫活性,AD 组中大量表达,而对照组中很少表达。免疫组织化学荧光双标显示,大部分被 Bcl-2免疫标记的神经元也表达 ER α。结论 在 AD 患者海马的神经元和星型胶质细胞中,雌激素可能作为细胞凋亡的一个调节子,通过 ER α来调节 Bcl-2表达,行使其神经保护作用。
基金supported by Department of Science & Technology of Hebei Province (No.06276102D-31)Department of Health of Hebei Province (No.2005156)Training Program for Backbone of Scientific Research Talents of Hebei Medical University (2007)
文摘Objective: To observe the effects of electroacupuncture on hippocampal and cortical apoptosis in a mouse model of cerebral ischemia-reperfusion injury. Methods: Mouse models established by repeated cerebral ischemia-reperfusion, followed by electroacupuncture at Shenshu, Geshu, and Baihui points. The control group mice were intragastrically administered Hydergine. On day 1 and 7 post-treatment, hippocampal and cortical apoptosis was detected by terminal-deoxynucleotidyl transferase mediated dUTP nick-end labeling (TUNEL), and apoptosis images in the hippocampal CA1 zone and cortical area were analyzed. Results: In the model group, apoptotic cells were detected one day after treatment and some cellular fibers were disarrayed. By day 7 post-treatment, there was an increase in the number of apoptotic cells in the hippocampal CA1 region. In addition, there were apoptotic cells in the cortical area, the cortical layers were thinner with localized neuronal loss and sieve-like lymphocyte infiltration, as well as glial cell proliferation and visible infarct lesions. However, in the Hydergine and electroacupuncture groups, there was a small number of apoptotic cells. At 7 days post-treatment in the model group, field number, numerical density on area, and surface density were increased. However, in the Hydergine and electroacupuncture groups these parameters were decreased (P<0.01), with a significant difference between the two treatment groups (P<0.01). Conclusion: Electroacupuncture treatment inhibited apoptosis and provided neuroprotection.
