• Medicine · Mar 2023

    Central metabolites and peripheral parameters associated neuroinflammation in fibromyalgia patients: A preliminary study.

    • Ye-Ha Jung, Hyeonjin Kim, Seongho Seo, Dasom Lee, Jae-Yeon Lee, Jee Youn Moon, Gi Jeong Cheon, Soo-Hee Choi, and Do-Hyung Kang.
    • Department of Psychiatry, Seoul National University Hospital, Seoul, Republic of Korea.
    • Medicine (Baltimore). 2023 Mar 31; 102 (13): e33305e33305.

    AbstractTo identify central metabolites and peripheral measures associated with neuroinflammation in fibromyalgia (FM), we scanned [11C]-(R)-PK11195 positron emission tomography and magnetic resonance spectroscopy in FM patients. We measured associations between neurometabolite levels measured by magnetic resonance spectroscopy and the extent of neuroinflammation inferred by the distribution volume ratios of [11C]-(R)-PK11195 positron emission tomography in 12 FM patients and 13 healthy controls. We also examined the associations between peripheral parameters, such as creatinine and C-reactive protein, and neuroinflammation. In FM patients, we found negative correlations between neuroinflammation and the creatine (Cr)/total creatine (tCr; Cr + phosphocreatine) ratios in the right (r = -0.708, P = .015) and left thalamus (r = -0.718, P = .008). In FM patients, negative correlations were apparent between neuroinflammation and the glutamate/tCr ratio in the right insula (r = -0.746, P = .005). In FM patients, we found negative correlations between neuroinflammation in the left thalamus (r = -0.601, P = .039) and left insula (r = -0.598, P = .040) and the blood creatinine levels. Additionally, we found significant correlations of other peripheral measures with neuroinflammation in FM patients. Our results suggest that both central metabolites, such as Cr and glutamate, and peripheral creatinine and other parameters are associated with neuroinflammation in patients with FM.Copyright © 2023 the Author(s). Published by Wolters Kluwer Health, Inc.

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