Puig‐Pijoan A, Jimenez‐Balado J, Fernández‐Lebrero A, García‐Escobar G, Navalpotro‐Gómez I, Contador J, Manero‐Borràs R, Puente‐Periz V, Suárez A, Muñoz FJ, Grau‐Rivera O, Suárez‐Calvet M, de la Torre R, Roquer J, Ois A. Risk of cognitive decline progression is associated to increased blood-brain-barrier permeability: A longitudinal study in a memory unit clinical cohort.
Alzheimers Dement 2024;
20:538-548. [PMID:
37727082 PMCID:
PMC10916969 DOI:
10.1002/alz.13433]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 07/19/2023] [Accepted: 07/27/2023] [Indexed: 09/21/2023]
Abstract
INTRODUCTION
This study examined the relationship between blood-brain-barrier permeability (BBBp), measured by cerebrospinal fluid/serum albumin ratio (QAlb), and cognitive decline progression in a clinical cohort.
METHODS
This prospective observational study included 334 participants from the BIODEGMAR cohort. Cognitive decline progression was defined as an increase in Global Deterioration Scale and/or Clinical Dementia Rating scores. Associations between BBBp, demographics, and clinical factors were explored.
RESULTS
Male sex, diabetes mellitus, and cerebrovascular burden were associated with increased log-QAlb. Vascular cognitive impairment patients had the highest log-QAlb levels. Among the 273 participants with valid follow-up data, 154 (56.4%) showed cognitive decline progression. An 8% increase in the hazard of clinical worsening was observed for each 10% increase in log-QAlb.
DISCUSSION
These results suggest that increased BBBp in individuals with cognitive decline may contribute to clinical worsening, pointing to potential targeted therapies. QAlb could be a useful biomarker for identifying patients with a worse prognosis.
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