title: Blood and CSF biomarkers in brain  subcortical ischemic vascular disease:  Involved pathways and clinical applicability.
abstract: Vascular dementia is the second most common type of dementia after Alzheimer’s disease (AD). Subcortical ischemic vascular disease refers to a form of vascular cognitive impairment characterized by the presence of diffuse white matter hyperintensities (WMHs) and multiple lacunar infarcts. These neuroimaging findings are mainly caused by cerebral small-vessel disease (cSVD) and relate to aging and cognitive impairment, but they can also be silent and highly prevalent in otherwise healthy individuals. We aimed to review studies on blood and cerebrospinal fluid (CSF) markers related to the presence of WMHs and lacunar infarcts that have been conducted in the past in large population-based studies and in high-risk selected patients (such as those with vascular risk factors, vascular cognitive impairment, or AD). Relevant associations with the presence and progression of cSVD have been described in the blood for markers related to inflammatory processes, endothelial damage and coagulation/fibrinolysis processes, etc. Also, different combinations of CSF markers might help to differentiate between etiologic types of dementia. In the future, to translate these findings into clinical practice and use biomarkers to early diagnosis and monitoring vascular cognitive impairment would require the replication of candidate markers in large-scale, multicenter, and prospectively designed studies.
authors.forename: A
authors.initials: A
authors.lastname: Vilar-Bergua
authors.forename: I
authors.initials: I
authors.lastname: Riba-Llena
authors.forename: C
authors.initials: C
authors.lastname: Nafría
authors.forename: A
authors.initials: A
authors.lastname: Bustamante
authors.forename: V
authors.initials: V
authors.lastname: Llombart
authors.forename: P
authors.initials: P
authors.lastname: Delgado
authors.forename: J
authors.initials: J
authors.lastname: Montaner
mesh_terms: D015415:Biomarkers / Q000097:blood / Q000134:cerebrospinal fluid; D001777:Blood Coagulation; D002545:Brain Ischemia / Q000097:blood* / Q000134:cerebrospinal fluid* / Q000150:complications; D016207:Cytokines / Q000097:blood / Q000134:cerebrospinal fluid; D015140:Dementia, Vascular / Q000097:blood* / Q000134:cerebrospinal fluid* / Q000150:complications; D004730:Endothelium, Vascular / Q000473:pathology; D016326:Extracellular Matrix Proteins / Q000097:blood / Q000134:cerebrospinal fluid; D006801:Humans; D050356:Lipid Metabolism; D008279:Magnetic Resonance Imaging; D012084:Renin-Angiotensin System; D059409:Stroke, Lacunar / Q000097:blood / Q000134:cerebrospinal fluid / Q000150:complications; D066127:White Matter / Q000098:blood supply / Q000473:pathology
chemical_list: D015415:Biomarkers; D016207:Cytokines; D016326:Extracellular Matrix Proteins