Reports of Biochemistry and Molecular Biology

en Red Blood Cell-Conditioned Media from Non-Alcoholic Fatty Liver Disease Patients Contain Increased MCP1 and Induce TNF-α Release بیوشیمی Biochemistry مقالات اصلی Original Article <div style="text-align: justify;">Background: Non-alcoholic fatty liver disease (NAFLD) constitutes a global pandemic. An intricate network among cytokines and lipids possesses a central role in NAFLD pathogenesis. Red blood cells comprise an important source of both cytokines and signaling lipids and have an important role in molecular crosstalk during immunometabolic deregulation. However, their role in NAFLD has not been thoroughly investigated. Methods: Conditioned media from erythrocytes derived from 10 NAFLD patients (4 men, 6 women, aged 57.875±15.16) and 10 healthy controls (4 men, 6 women, aged 39.3±15.55) was analyzed for the cytokines IFN-γ, TNF-α, CCL2, CCL5, IL-8, IL-1β, IL-12p40, IL-17, MIP-1β, the signaling lipids sphingosine-1-phosphate (S1P) and lysophosphatidic acid (LPA), and cholesterol. Their effect on the cytokine profile released by RAW 264.7 macrophages was also studied. Results: MCP1 levels were greater in conditioned growth medium from NAFLD patient erythrocytes than in that from healthy controls (37±40 vs 6.51±5.63 pg/ml). No statistically significant differences were found between patients and healthy controls with regard to S1P, LPA, cholesterol, or eight other cytokines. TNFa release by RAW 264.7 cells was greater after incubation with patient-derived erythrocyte-conditioned medium than in medium without RAW 264.7 cells from either healthy or NAFLD subjects. Conclusions: Erythrocytes may contribute to liver infiltration by monocytes, and macrophage activation, partially due to CCL2 release, in the context of NAFLD.</div> Cytokines, Erythrocytes, Lipids, Non-alcoholic fatty liver disease, Signaling. 54 62 http://rbmb.net/browse.php?a_code=A-10-732-1&slc_lang=en&sid=1 Charalambos Papadopoulos 100319475328460012329 100319475328460012329 No Laboratory of Biochemistry, Department of Medicine, Democritus University of Thrace, Greece. Konstantinos Mimidis 100319475328460012330 100319475328460012330 No Pathology Clinic, Department of Medicine, Democritus University of Thrace, Greece. Dimitris Papazoglou 100319475328460012331 100319475328460012331 No Pathology Clinic, Department of Medicine, Democritus University of Thrace, Greece. George Kolios 100319475328460012332 100319475328460012332 No Pathology Clinic, Department of Medicine, Democritus University of Thrace, Greece. Ioannis Tentes 100319475328460012333 100319475328460012333 No Laboratory of Biochemistry, Department of Medicine, Democritus University of Thrace, Greece. Konstantinos Anagnostopoulos kanagnos@med.duth.gr. 100319475328460012334 100319475328460012334 Yes Laboratory of Biochemistry, Department of Medicine, Democritus University of Thrace, Greece.