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脑老化的神经病理学特征:多腔血管形态。

A neuropathologic feature of brain aging: multi-lumen vascular profiles.

机构信息

Department of Neurology, Emory University, Atlanta, GA, USA.

Sanders-Brown Center On Aging, University of Kentucky, Rm 575 Lee Todd Bldg, 789 S. Limestone Ave, Lexington, KY, 40536, USA.

出版信息

Acta Neuropathol Commun. 2023 Aug 28;11(1):138. doi: 10.1186/s40478-023-01638-2.

Abstract

Cerebrovascular pathologies other than frank infarctions are commonly seen in aged brains. Here, we focus on multi-lumen vascular profiles (MVPs), which are characterized by multiple vessel lumens enclosed in a single vascular channel. Little information exists on the prevalence, risk factors, and co-pathologies of MVPs. Therefore, we used samples and data from the University of Kentucky Alzheimer's Disease Research Center (n = 91), the University of Kentucky Pathology Department (n = 31), and the University of Pittsburgh Pathology Department (n = 4) to study MVPs. Age at death was correlated with MVP density in the frontal neocortex, Brodmann Area 9 (r = 0.51; p < 0.0001). Exploratory analyses were performed to evaluate the association between conventional vascular risk factors (e.g., hypertension, diabetes), cardiovascular diseases (e.g., heart attack, arrhythmia), and cerebrovascular disease (e.g., stroke); the only nominal association with MVP density was a self-reported history of brain trauma (Prevalence Ratio = 2.1; 95 CI 1.1-3.9, before correcting for multiple comparisons). No specific associations were detected between neuropathological (e.g., brain arteriolosclerosis) or genetic (e.g., APOE) variables and MVP density. Using a tissue clearing method called SeeDB, we provide 3-dimensional images of MVPs in brain tissue. We conclude that MVPs are an age-related brain pathology and more work is required to identify their clinical-pathological correlation and associated risk factors.

摘要

除了明显的梗死灶外,脑血管病变在老年大脑中也很常见。在这里,我们重点关注多腔血管形态(MVPs),其特征是多个血管腔被包裹在单个血管通道内。关于 MVP 的流行率、危险因素和共病的信息很少。因此,我们使用了肯塔基大学阿尔茨海默病研究中心(n=91)、肯塔基大学病理学系(n=31)和匹兹堡大学病理学系(n=4)的样本和数据来研究 MVP。死亡时的年龄与额皮质 Brodmann 区域 9(9 区)的 MVP 密度呈正相关(r=0.51;p<0.0001)。进行了探索性分析,以评估常规血管危险因素(如高血压、糖尿病)、心血管疾病(如心脏病发作、心律失常)和脑血管疾病(如中风)与 MVP 密度之间的关联;与 MVP 密度唯一存在名义关联的是自述有脑外伤史(患病率比=2.1;95%置信区间 1.1-3.9,在未对多重比较进行校正之前)。未发现 MVP 密度与神经病理学(如脑小动脉硬化)或遗传(如 APOE)变量之间存在特定关联。使用一种称为 SeeDB 的组织透明化方法,我们提供了脑组织中 MVP 的 3 维图像。我们得出结论,MVP 是一种与年龄相关的脑部病变,需要进一步研究以确定其临床-病理相关性和相关危险因素。

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