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Anad A, Barker MK, Katanga JA, Arfanakis K, Bridges LR, Esiri MM, Isaacs JD, Prpar Mihevc S, Pereira AC, Schneider JA, Hainsworth AH. Vasculocentric Axonal NfH in Small Vessel Disease. J Neuropathol Exp Neurol 2022; 81:182-192. [PMID: 35086142 PMCID: PMC8922195 DOI: 10.1093/jnen/nlab134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Cerebral small vessel disease (SVD) causes lacunar stroke and vascular cognitive impairment in older people. The pathogenic pathways from vessel pathology to parenchymal damage in SVD are unknown. Neurofilaments are axonal structural proteins. Neurofilament-light (NfL) is an emerging biomarker for neurological disease. Here, we examined the high molecular weight form neurofilament-heavy (NfH) and quantified a characteristic pattern of peri-arterial (vasculocentric) NfH labeling. Subcortical frontal and parietal white matter from young adult controls, aged controls, and older people with SVD or severe Alzheimer disease (n = 52) was immunohistochemically labeled for hyperphosphorylated NfH (pNfH). The extent of pNfH immunolabeling and the degree of vasculocentric axonal pNfH were quantified. Axonal pNfH immunolabeling was sparse in young adults but a common finding in older persons (controls, SVD, or AD). Axonal pNfH was often markedly concentrated around small penetrating arteries. This vasculocentric feature was more common in older people with SVD than in those with severe AD (p = 0.004). We conclude that axonal pNfH is a feature of subcortical white matter in aged brains. Vasculocentric axonal pNfH is a novel parenchymal lesion that is co-located with SVD arteriopathy and could be a consequence of vessel pathology.
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Affiliation(s)
- Adam Anad
- From the Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK (AA, MKB, JAK, LRB, JDI, ACP, AHH)
| | - Miriam K Barker
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois, USA (KA, JAS)
| | - Jessica A Katanga
- From the Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK (AA, MKB, JAK, LRB, JDI, ACP, AHH)
| | - Konstantinos Arfanakis
- Rush Alzheimer’s Disease Center, Rush University Medical Center, Chicago, Illinois, USA (KA, JAS)
- Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, Illinois, USA (KA)
| | - Leslie R Bridges
- From the Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK (AA, MKB, JAK, LRB, JDI, ACP, AHH)
- Department of Cellular Pathology, St George’s University Hospitals NHS Foundation Trust, London, UK (LRB)
| | - Margaret M Esiri
- Nuffield Department of Clinical Neurosciences, Oxford University, Oxford, UK (MME)
| | - Jeremy D Isaacs
- From the Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK (AA, MKB, JAK, LRB, JDI, ACP, AHH)
- Department of Neurology, St George’s University Hospitals NHS Foundation Trust, London, UK (JDI, ACP, AHH)
| | - Sonja Prpar Mihevc
- Institute for Preclinical Sciences, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia (SPM)
| | - Anthony C Pereira
- From the Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK (AA, MKB, JAK, LRB, JDI, ACP, AHH)
- Department of Neurology, St George’s University Hospitals NHS Foundation Trust, London, UK (JDI, ACP, AHH)
| | - Julie A Schneider
- From the Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK (AA, MKB, JAK, LRB, JDI, ACP, AHH)
| | - Atticus H Hainsworth
- From the Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK (AA, MKB, JAK, LRB, JDI, ACP, AHH)
- Department of Neurology, St George’s University Hospitals NHS Foundation Trust, London, UK (JDI, ACP, AHH)
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