OCT 2, 2026 · JOURNAL ARTICLE
Retinol-Binding Protein 4 in Obesity-Associated Metabolic Dysfunction: Mechanisms, Controversies, and Therapeutic Opportunities
Endocrines
Retinol-binding protein 4 (RBP4) is the primary carrier of retinol in the circulation and is produced mainly by the liver. Interest in RBP4 expanded after reports of elevated circu