GPR10 and neuropeptide FF receptor 2 (NPFFR2) play important role in the regulation of food intake and energy homeostasis. Understanding the interaction between these receptors and their specific ligands, such as prolactin-releasing peptide, is essential for developing stable peptide analogs with potential for treating obesity. By breeding and characterizing double knockout (dKO) mice fed standard or high-fat diet (HFD), we provide insights into the metabolic regulation associated with the GPR10 and NPFFR2 deficiency. Both WT and dKO mice were subjected to behavioral tests and an oral glucose tolerance test. Moreover, dual-energy X-ray absorptiometry (DEXA) followed by indirect calorimetry were performed to characterize dKO mice. dKO mice of both sexes, when exposed to an HFD, showed reduced glucose tolerance, hyperinsulinemia, and insulin resistance compared with controls. Moreover, they displayed increased liver weight with worsened hepatic steatosis. Mice displayed significantly increased body weight, which was more pronounced in dKO males and caused by higher caloric intake on a standard diet, while dKO females displayed obesity characterized by increased white adipose tissue and enhanced hepatic lipid accumulation on an HFD. Moreover, dKO females exhibited anxiety-like behavior in the open field test. dKO mice on a standard diet had a lower respiratory quotient, with no significant changes in energy expenditure. These results provide insights into alterations associated with disrupted GPR10 and NPFFR2 signaling, contributing to the development of potential anti-obesity treatment.

• Klíčová slova
• GPR10/NPFFR2-deficient mice, double KO mice, impaired glucose utilization, insulin resistance, obesity,
• MeSH
• bílá tuková tkáň metabolismus   MeSH
• dieta s vysokým obsahem tuků * škodlivé účinky   MeSH
• energetický metabolismus genetika   MeSH
• inzulinová rezistence MeSH
• myši inbrední C57BL MeSH
• myši knockoutované * MeSH
• myši MeSH
• obezita * metabolismus   genetika   MeSH
• prediabetes * metabolismus   genetika   MeSH
• receptory neuropeptidů * genetika   metabolismus   nedostatek   MeSH
• receptory spřažené s G-proteiny * genetika   metabolismus   nedostatek   MeSH
• sexuální faktory MeSH
• zvířata MeSH
• Check Tag
• mužské pohlaví MeSH
• myši MeSH
• ženské pohlaví MeSH
• zvířata MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Názvy látek
• neuropeptide FF receptor MeSH Prohlížeč
• receptory neuropeptidů * MeSH
• receptory spřažené s G-proteiny * MeSH