Akademik Veri Yönetim Sistemi
International journal of molecular sciences, cilt.27, sa.7, 2026 (SCI-Expanded, Scopus)
Fibromyalgia (FM) is a chronic pain syndrome characterized by central sensitization, in which glutamatergic and purinergic signaling pathways are thought to play critical roles. This study aimed to evaluate the diagnostic potential of serum glutamate ionotropic receptor N-methyl-D-aspartate type subunit 1 (GRIN1), purinergic receptor P2X 1 (P2RX1), and purinergic receptor P2Y 2 (P2RY2) levels in patients with FM. A total of 93 newly diagnosed FM patients and 93 age- and sex-matched healthy controls were included in the study. Serum levels of GRIN1, P2RX1, and P2RY2 were measured using enzyme-linked immunosorbent assay (ELISA). Receiver operating characteristic (ROC) curve analysis was performed to assess the diagnostic performance of these biomarkers. ROC analysis demonstrated good diagnostic accuracy for all three biomarkers. The area under the curve (AUC) values were 0.817 for GRIN1, 0.778 for P2RX1, and 0.842 for P2RY2 (p < 0.001 for all). At optimal cut-off values, GRIN1, P2RX1, and P2RY2 showed sensitivities of 91.4%, 78.5%, and 92.5%, and specificities of 72.00%, 75.3%, and 80.6%, respectively. Serum GRIN1, P2RX1, and P2RY2 levels exhibit strong diagnostic performance in FM and may serve as promising biomarkers reflecting altered glutamatergic and purinergic signaling in disease pathophysiology.