Therapies that complement free radical scavenging are an important approach for treating aging in the brain. In the present study, two formulations of moxa cone moxibustion were applied at acupoints Zusanfi （ST 36） ...Therapies that complement free radical scavenging are an important approach for treating aging in the brain. In the present study, two formulations of moxa cone moxibustion were applied at acupoints Zusanfi （ST 36） and Xuanzhong （GB 39）, and at acupoints Baihui （DU 20） and Guanyuan （RN 4）, in D-galactose-induced senile mice. The results revealed that moxa cone moxibustion improved total superoxide dismutase and Cu/Zn-superoxide dismutase activity in the homogenates of the cerebral tissue, as well as ameliorating deficits in neuronal morphology and neuronal density in the cerebral cortex and hippocampal CA3. Moxa cone moxibustion also enhanced learning and memory functions of senile mice. Moxa cone moxibustion at Zusanli, Xuanzhong, Baihuiand Guanyuan acupoints can thus be used to complement free radical scavengers, with efficacy that is equal to that of electroacupuncture at Zusanliand Xuanzhong, and superior to that of nimodipine treatment.展开更多
There is currently no treatment for effectively slowing the progression of Alzheimer＇s disease, so early prevention is very important. Numerous studies have shown that flavonoids can improve memory impairment. The pr...There is currently no treatment for effectively slowing the progression of Alzheimer＇s disease, so early prevention is very important. Numerous studies have shown that flavonoids can improve memory impairment. The present study investigated the effects of myricetin, a member of the flavonoids, on intracerebroventricular streptozotocin induced neuronal loss and memory impairment in rat models of Alzheimer＇s disease. Myricetin at 5 or 10 mg/kg was intraperitoneally injected into rats over 21 days. Control rats were treated with 10 m L/kg saline. Behavioral test（the shuttle box test） was performed on day 22 to examine learning and memory in rats. Immediately after that, hematoxylin-eosin staining was performed to observe the morphological change in hippocampal CA3 pyramidal neurons. Myricetin greatly increased the number of hippocampal CA3 pyramidal neurons and improved learning and memory impairments in rats with Alzheimer＇s disease. These findings suggest that myricetin is beneficial for treatment of Alzheimer＇s disease.展开更多
基金Scientific Research Projects of Education Bureau of Guangxi Zhuang Autonomous Region,No.200710LX022the Natural Science Foundation of Guangxi Zhuang Autonomous Region,No.0832170
文摘Therapies that complement free radical scavenging are an important approach for treating aging in the brain. In the present study, two formulations of moxa cone moxibustion were applied at acupoints Zusanfi （ST 36） and Xuanzhong （GB 39）, and at acupoints Baihui （DU 20） and Guanyuan （RN 4）, in D-galactose-induced senile mice. The results revealed that moxa cone moxibustion improved total superoxide dismutase and Cu/Zn-superoxide dismutase activity in the homogenates of the cerebral tissue, as well as ameliorating deficits in neuronal morphology and neuronal density in the cerebral cortex and hippocampal CA3. Moxa cone moxibustion also enhanced learning and memory functions of senile mice. Moxa cone moxibustion at Zusanli, Xuanzhong, Baihuiand Guanyuan acupoints can thus be used to complement free radical scavengers, with efficacy that is equal to that of electroacupuncture at Zusanliand Xuanzhong, and superior to that of nimodipine treatment.
基金supported by the Natural Science Foundation of Anhui ProvinceChina(No.090413096)+1 种基金College Student Innovation and Entrepreneurship Training Plan of Anhui ProvinceChina(No.AH201310368104)
文摘本研究旨在探讨与动物空间辨别学习能力相关的神经振荡电活动及其改变。运用Y型迷宫电击回避训练方法,筛选出与空间认知能力相关的快回避反应组和普通回避反应组大鼠,无线遥测两组动物在电击回避实验前、后海马CA3区实时局部场电位(local field potential,LFP),分析与空间辨别和学习能力相关的神经振荡成分变化。结果显示,与普通回避反应组大鼠比较,电击回避训练前快回避反应组大鼠左侧海马CA3区LFP成分无显著差异,但电击回避训练后,右侧海马CA3区0~10 Hz和30~40 Hz电节律百分比显著增加(P<0.01或P<0.05);快速傅里叶变换显示,0~10 Hz频段百分比增加主要发生在θ波(3~7 Hz)频段,而30~40 Hz频段改变相当于γ1频段。进一步将两组大鼠训练前后的右侧CA3区神经振荡进行自身比较,结果显示训练后快回避反应组大鼠仅出现β波、β2(20~30 Hz)和γ1节律百分比增加,θ波节律百分比在训练前后无明显变化,而普通回避反应组大鼠训练前后比较显示,训练后右侧CA3区θ波节律百分比和大幅波(强度:+2.5^-2.5 db)显著减少(P<0.01)。本研究结果显示,快回避反应组大鼠电击回避训练后,右侧海马CA3区β2和γ1节律百分比增加,θ波节律百分比保持较高水平,这些改变可能与其较强的空间认知能力有关。
基金funded by the Department of Biology,Faculty of Science,Arak University,Iran,No.38156-8-8349
文摘There is currently no treatment for effectively slowing the progression of Alzheimer＇s disease, so early prevention is very important. Numerous studies have shown that flavonoids can improve memory impairment. The present study investigated the effects of myricetin, a member of the flavonoids, on intracerebroventricular streptozotocin induced neuronal loss and memory impairment in rat models of Alzheimer＇s disease. Myricetin at 5 or 10 mg/kg was intraperitoneally injected into rats over 21 days. Control rats were treated with 10 m L/kg saline. Behavioral test（the shuttle box test） was performed on day 22 to examine learning and memory in rats. Immediately after that, hematoxylin-eosin staining was performed to observe the morphological change in hippocampal CA3 pyramidal neurons. Myricetin greatly increased the number of hippocampal CA3 pyramidal neurons and improved learning and memory impairments in rats with Alzheimer＇s disease. These findings suggest that myricetin is beneficial for treatment of Alzheimer＇s disease.
