Peripheral Inflammation Links with the Severity of Clinical Phenotype in Spinocerebellar Ataxia 2

• Published in: Movement disorders Vol. 38; no. 5; pp. 880 - 885
• Main Authors: Vázquez‐Mojena, Yaimeé, Rodríguez‐Córdova, Yanetsy, Dominguez‐Barrios, Yennis, León‐Arcia, Karen, Miranda‐Becerra, David, Gonzalez‐Zaldivar, Yanetza, Guerra‐Bustillos, Guillermo, Ziemann, Ulf, Auburger, Georg, Rodríguez‐Labrada, Roberto, Robinson‐Agramonte, María de los Ángeles, Velázquez‐Pérez, Luis
• Format: Journal Article
• Language: English
• Published: Hoboken, USA John Wiley & Sons, Inc 01.05.2023; Wiley Subscription Services, Inc
• Subjects: Ataxia; Biomarkers; blood cell count–derived inflammatory indices; Clinical trials; Cognitive ability; Humans; Immunomodulation; Inflammation; Leukocytes (neutrophilic); Lymphocyte Count; Lymphocytes; Movement disorders; neuroinflammation; peripheral inflammation; Phenotype; Phenotypes; Retrospective Studies; Spinocerebellar ataxia; spinocerebellar ataxia type 2; Spinocerebellar Ataxias - complications; therapy monitoring; peripheral inflammation; therapy monitoring; spinocerebellar ataxia type 2; neuroinflammation; blood cell count-derived inflammatory indices
• ISSN: 0885-3185; 1531-8257; 1531-8257
• DOI: 10.1002/mds.29359

ABSTRACT Background The role of peripheral inflammation in spinocerebellar ataxia type 2 (SCA2) is unknown. Objective The objective of this study was to identify peripheral inflammation biomarkers and their relationship with the clinical and molecular features. Methods Blood cell count–derived inflammatory indices were measured in 39 SCA2 subjects and their matched controls. Clinical scores of ataxia, nonataxia, and cognitive dysfunction were assessed. Results The neutrophil‐to‐lymphocyte ratio (NLR), the platelet‐to‐lymphocyte ratio (PLR), the Systemic Inflammation Index (SII), and the Aggregate Index of Systemic Inflammation (AISI) were significantly increased in SCA2 subjects compared with controls. The increases in PLR, SII, and AISI were even observed in preclinical carriers. NLR, PLR, and SII were correlated with the Scale for the Assessment and Rating of Ataxia speech item score rather than with the total score. The NLR and SII were correlated with the nonataxia and the cognitive scores. Conclusions Peripheral inflammatory indices are biomarkers in SCA2, which may help to design future immunomodulatory trials and advance our understanding of the disease. © 2023 International Parkinson and Movement Disorder Society.