INVESTIGADORES
INGARAMO Paola Ines
artículos
Título:
Effects of Salvia hispanica L. (chia) seed on blood coagulation, endothelial dysfunction and liver fibrosis in an experimental model of Metabolic Syndrome.”
Autor/es:
OLIVA, MARIA EUGENIA; INGARAMO, PAOLA; VEGA JOUBERT, MICHELLE BERENICE; FERREIRA, MARÍA DEL ROSARIO; D'ALESSANDRO, MARIA EUGENIA
Revista:
Food & Function
Editorial:
Cambridge : Royal Society of Chemistry
Referencias:
Año: 2021
ISSN:
2042-6496
Resumen:
The aim of this study was to analyze blood coagulation, endothelial dysfunction and liver fibrosis in an experimental model of Metabolic Syndrome (MS) induced by chronic administration of a sucrose-rich diet (SRD) and to evaluate the effects of chia seed as therapeutic strategy. Male Wistar rats were fed with a reference diet (RD) -6 months- or a SRD -3 months-. Then, the last group was randomly divided into two subgroups. One subgroup continued receiving the SRD up to 6 months and the other was fed with a SRD where whole chia seed was incorporated as the source of dietary fat for the next 3 months (SRD+CHIA). Results showed that rats fed a SRD for a long period of time develop dyslipidemia, visceral adiposity, insulin resistance, and a hypercoagulable and hypofibrinolytic basal state. Hepatic VCAM-1 (main adhesion molecules involved in endothelial dysfunction) expression was significantly increased. In adittion, the SRD group presented hepatic steatosis, a significant increase in interstitial collagen deposition and hydroxyproline content. Liver TGF-β1 (a key cytokine involved in fibrogenesis) levels increased and a negative correlation with PPARα protein mass levels was found. The administration of chia seed for 3 months reversed dyslipidemia, visceral adiposity and insulin resistance. Platelet counts, coagulation parameters and plasma fibrinogen levels were normalized. In liver tissue, VCAM-1 expression, steatosis, interstitial collagen deposition and hydroxyproline content decreased. TGF-β1 expression was decreased and this was associated with an increase in PPARα protein levels. The present study showed new aspects in the progression from liver steatosis to fibrosis in dyslipidemic insulin-resistant rats chronically fed a sucrose-rich diet. Chia seed supplementation could be used as a functional food and a potential dietary strategy to prevent or ameliorate disorders related to atherothrombotic cardiovascular events and NASH.