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Updated: Aug 16, 2025
Isolation and Cannulation of Cerebral Parenchymal Arterioles
Published on: May 23, 2016
Arteriolar neuropathology in cerebral microvascular disease
Chuo Fang1, Shino D Magaki2, Ronald C Kim3
1Department of Neurology, University of California, Irvine Medical Center, 101 The City Drive South Shanbrom Hall (Building 55), Room 121, Orange, 92868, California, USA.
Abstract:
Cerebral microvascular disease (MVD) is an important cause of vascular cognitive impairment. MVD is heterogeneous in aetiology, ranging from universal ageing to the sporadic (hypertension, sporadic cerebral amyloid angiopathy [CAA] and chronic kidney disease) and the genetic (e.g., familial CAA, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy [CADASIL] and cerebral autosomal recessive arteriopathy with subcortical infarcts and leukoencephalopathy [CARASIL]). The brain parenchymal consequences of MVD predominantly consist of lacunar infarcts (lacunes), microinfarcts, white matter disease of ageing and microhaemorrhages. MVD is characterised by substantial arteriolar neuropathology involving ubiquitous vascular smooth muscle cell (SMC) abnormalities. Cerebral MVD is characterised by a wide variety of arteriolar injuries but only a limited number of parenchymal manifestations. We reason that the cerebral arteriole plays a dominant role in the pathogenesis of each type of MVD. Perturbations in signalling and function (i.e., changes in proliferation, apoptosis, phenotypic switch and migration of SMC) are prominent in the pathogenesis of cerebral MVD, making 'cerebral angiomyopathy' an appropriate term to describe the spectrum of pathologic abnormalities. The evidence suggests that the cerebral arteriole acts as both source and mediator of parenchymal injury in MVD.
Insights
Cerebral microvascular disease (MVD) causes cognitive impairment through diverse causes. The study highlights cerebral arterioles as central to MVD
Area of Science:
- Neurology
- Pathology
- Vascular Biology
Background:
- Cerebral microvascular disease (MVD) is a key contributor to vascular cognitive impairment.
- MVD encompasses diverse etiologies, including aging, hypertension, cerebral amyloid angiopathy (CAA), and genetic conditions like CADASIL and CARASIL.
- Pathological consequences include lacunar infarcts, microinfarcts, white matter disease, and microhemorrhages.
Purpose of the Study:
- To investigate the central role of cerebral arterioles in the pathogenesis of MVD.
- To propose 'cerebral angiomyopathy' as a unifying term for MVD's pathological spectrum.
- To elucidate the mechanisms by which arteriolar abnormalities lead to parenchymal injury.
Main Methods:
- Review of existing literature on MVD and cerebral arteriolar pathology.
- Analysis of the relationship between arteriolar neuropathology and parenchymal manifestations.
- Examination of vascular smooth muscle cell (SMC) signaling and functional changes in MVD.
Main Results:
- MVD exhibits widespread arteriolar smooth muscle cell (SMC) abnormalities.
- Despite varied arteriolar injuries, parenchymal consequences are limited.
- Cerebral arterioles are implicated as both the source and mediator of parenchymal injury in MVD.
Conclusions:
- The cerebral arteriole plays a dominant role in the pathogenesis of all MVD types.
- Abnormalities in SMC signaling and function are central to cerebral MVD.
- 'Cerebral angiomyopathy' accurately describes the spectrum of pathological changes in MVD.
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