RESUMEN
Metabolic syndrome-related diseases affect millions of people worldwide. It is well established that changes in nutritional habits and lifestyle can improve or prevent metabolic-related pathologies such as type-2 diabetes and obesity. Previous reports have shown that nutritional supplements have the capacity to limit glucose intolerance and suppress diabetes development. In this study, we investigated the effect of dietary supplementation with fish-derived extracts on obesity and type 2 diabetes and their impact on gut microbial composition. We showed that nutritional supplements containing Fish Complex (FC), Fish Complex combined with Cod Powder (FC + CP), or Cod Powder combined with Collagen (CP + C) improved glucose intolerance, independent of abdominal fat accumulation, in a mouse model of diet-induced obesity and type 2 diabetes. In addition, collagen-containing supplements distinctly modulate the gut microbiome in high-fat induced obesity in mice. Our results suggest that fish-derived supplements suppress diet-induced type 2 diabetes, which may be partly mediated through changes in the gut microbiome. Thus, fish-derived supplements and particularly the ones containing fish collagen have potential beneficial properties as dietary supplements in managing type 2 diabetes and metabolic syndrome via modulation of the gut microbiome.
Asunto(s)
Diabetes Mellitus Tipo 2/tratamiento farmacológico , Suplementos Dietéticos , Peces , Microbioma Gastrointestinal/efectos de los fármacos , Hipoglucemiantes/farmacología , Obesidad , Extractos de Tejidos/farmacología , Grasa Abdominal/efectos de los fármacos , Animales , Peso Corporal/efectos de los fármacos , Diabetes Mellitus Tipo 2/inducido químicamente , Diabetes Mellitus Tipo 2/complicaciones , Dieta Alta en Grasa/efectos adversos , Suplementos Dietéticos/microbiología , Modelos Animales de Enfermedad , Femenino , Intolerancia a la Glucosa/tratamiento farmacológico , Hipoglucemiantes/uso terapéutico , Resistencia a la Insulina , Leptina/metabolismo , Ratones Endogámicos C57BL , Obesidad/inducido químicamente , Obesidad/complicaciones , Extractos de Tejidos/aislamiento & purificación , Extractos de Tejidos/uso terapéuticoRESUMEN
Histamine-induced vascular leakage is a core process of allergic pathologies, including anaphylaxis. Here, we show that glycolysis is integral to histamine-induced endothelial barrier disruption and hyperpermeability. Histamine rapidly enhanced glycolysis in endothelial cells via a pathway that involved histamine receptor 1 and phospholipase C beta signaling. Consistently, partial inhibition of glycolysis with 3-(3-pyridinyl)-1-(4-pyridinyl)-2-propen-1-one (3PO) prevented histamine-induced hyperpermeability in human microvascular endothelial cells, by abolishing the histamine-induced actomyosin contraction, focal adherens junction formation, and endothelial barrier disruption. Pharmacologic blockade of glycolysis with 3PO in mice reduced histamine-induced vascular hyperpermeability, prevented vascular leakage in passive cutaneous anaphylaxis and protected from systemic anaphylaxis. In conclusion, we elucidated the role of glycolysis in histamine-induced disruption of endothelial barrier integrity. Our data thereby point to endothelial glycolysis as a novel therapeutic target for human pathologies related to excessive vascular leakage, such as systemic anaphylaxis.
