摘要
目的研究乳头体的动脉,为血管性老年痴呆提供形态资料。方法在50例人脑标本,用手术显微镜观察乳头体动脉来源,分支,分部,组织切片方法研究来源动脉病理改变对乳头体动脉的影响。结果乳头体依形态可分为Ⅰ、Ⅱ、Ⅲ、Ⅳ型等几种类型,动脉的主要来源为后交通动脉和大脑后动脉双来源型的占38%。60～80岁老年人乳头体的来源动脉有动脉粥样硬化的占88%。可见异常粗大,大脑后动脉、基底动脉和颈内动脉骨化的脑血管样本2例,致乳头体管腔狭窄阻塞。结论乳头体动脉位于后交通动脉和大脑后动脉的边缘区,血供较差,动脉钙化可使小动脉阻塞,可能是导致老年痴呆的原因之一。
Objective A study of mamillary body arteries of 50 brain specimens was carried out to give basic histomorphology support for vascular senile dementia.Methods Sixty brain specimens were collected.We used operating microscope to view the origins,branches and spreads of mamillary body arteryes;Tissue HE stain assays were analyzed with light microscope to study the influence of original artery pathological alterations on mamillary body arteries.Results Arterial blood supply of mamillary body could be classified asⅠ,Ⅱ,Ⅲ,Ⅳ types.The main arteries with double sources originating from both posterior communicating artery and posterior cerebral artery were about 38% of total brain specimens.About 88% original arteries of mamillary body arteries in those 60-80 years old brains had atheroscleroses.There were two specimens,whose artery lumens of the mamillary bodies were stenotic and blocked as results of their abnormally enlarged posterior cerebral arteries,basilar arteries and internal carotid arteries with arteriostosis.Conclusion Mamillary body arteries are located at the marginal zones of posterior communicating arteries and posterior cerebral arteries,where the blood supply is relatively short,and arteriosteogenesis can easily result in obstruction of these arteries.These anatomical feature and pathology of mamillary body arteries may be one pathogenesis of senile dementia.
出处
《中国当代医药》
2012年第12期5-7,17,共4页
China Modern Medicine
关键词
乳头体动脉
动脉粥样硬化
缺血
脑痴呆
Mammillary artery
Atherosclerosis
Ischemia
Brain dementia
