A pilot study of monocytes in relapsing remitting multiple sclerosis: Correlation with disease activity.

Autor:	Taha SI; Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt., Mohamed HG; Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt., Mamdouh R; Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt., Kamal NE; Department of Clinical Pathology, Faculty of Medicine, Ain Shams University, Cairo, Egypt., Khater SS; Department of Neurology, Faculty of Medicine, Ain Shams University, Cairo, Egypt.
Jazyk:	angličtina
Zdroj:	Innate immunity [Innate Immun] 2024 Jul; Vol. 30 (5), pp. 90-95. Date of Electronic Publication: 2024 Aug 02.
DOI:	10.1177/17534259241269674
Abstrakt:	Background: Numerous immune cells are involved in developing multiple sclerosis (MS). Monocytes are believed to be the first to enter the brain and initiate inflammation. The role of monocyte subtypes in MS needs to be better understood. Objective: The current study aims to investigate the presence of different subsets of monocytes in relapsing-remitting MS (RRMS) Egyptian patients and their correlation with disease activity. Methods: This study included 44 RRMS patients (22 patients in relapse, 22 patients in remission), diagnosed according to the 2017 MacDonalds criteria, and 44 matched healthy controls. Personal and medical histories were taken from the patients, and the Expanded Disability Status Scale (EDSS) was used to evaluate the degree of impairment. Characterization of peripheral blood monocyte subsets was done by flow cytometry for all participants. Results: The percentage of classical, intermediate, and non-classical monocyte subsets showed a significant increase in RRMS patients than controls with p -values of 0.029, 0.049, and 0.043, respectively. In the RRMS patients, there were no statistically significant correlations ( p -values >0.05) between the EDSS scores, the duration of disease, and number of relapses in the past year and the percentages of the various monocyte subsets. Furthermore, there were no significant differences in the percentage of each monocyte subset between RRMS patients in remission and those experiencing a relapse ( p -values >0.05). However, patients with evidence of activity in magnetic resonance imaging (MRI) had a significantly high percentage of non-classical monocytes with a p -value of 0.002. Conclusion: In RRMS patients, the three monocyte subsets (classical, non-classical and intermediate) increase significantly regardless of the disease activity. This increase denotes the vital role of monocytes and innate immunity in MS pathology, especially the non-classical monocyte subset. These findings suggest that monocytes might be a promising MS therapeutic target. Competing Interests: Declaration of conflicting interestsThe authors declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Databáze:	MEDLINE
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