RESUMO
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.
Assuntos
Diabetes Mellitus Tipo 2/tratamento farmacológico , Suplementos Nutricionais , Peixes , Microbioma Gastrointestinal/efeitos dos fármacos , Hipoglicemiantes/farmacologia , Obesidade , Extratos de Tecidos/farmacologia , Gordura Abdominal/efeitos dos fármacos , Animais , Peso Corporal/efeitos dos fármacos , Diabetes Mellitus Tipo 2/induzido quimicamente , Diabetes Mellitus Tipo 2/complicações , Dieta Hiperlipídica/efeitos adversos , Suplementos Nutricionais/microbiologia , Modelos Animais de Doenças , Feminino , Intolerância à Glucose/tratamento farmacológico , Hipoglicemiantes/uso terapêutico , Resistência à Insulina , Leptina/metabolismo , Camundongos Endogâmicos C57BL , Obesidade/induzido quimicamente , Obesidade/complicações , Extratos de Tecidos/isolamento & purificação , Extratos de Tecidos/uso terapêuticoRESUMO
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.