ABSTRACT
Objetivos: o óleo de peixe, rico em ácido eicosapentaenoico (EPA), mostrou benefícios renoprotetores em modelos animais de doenças crônicas. O objetivo deste trabalho foi avaliar os efeitos da suplementação com óleo de peixe três vezes mais concentrado em EPA (EPA 3X) na função renal de ratos e a eficiência desta suplementação por um curto período de tempo. Metodologia: ratos Wistar (n=16) foram divididos em dois grupos, controle (C) e suplementado (CO) por 14 dias com óleo de peixe (EPA 3X). Foram determinados os seguintes parâmetros: ganho de peso, ingesta de água e ração, fluxo urinário, proteinemia, trigliceridemia, osmolaridade, clearance de creatinina e fração de excreção de sódio. Resultados: os ratos suplementados tiveram níveis de triglicerídeos no plasma 58,4% menores que os ratos controle (p=0,0239), entretanto os restantes dos parâmetros sistêmicos avaliados não apresentaram alterações. A suplementação com óleo de peixe não alterou o fluxo urinário. Entretanto, no grupo CO identificou-se um aumento na filtração glomerular, com um incremento em média de 67,8% no clearance de creatinina em relação ao grupo C (p=0,054). A excreção média de proteínas totais na urina e a fração de excreção de sódio foram semelhantes entre os grupos. Conclusão: a suplementação com óleo de peixe três vezes mais concentrado em EPA por um período curto de tempo (quinze dias) provocou alterações significativas tanto em parâmetros sistêmicos (redução significativa na trigliceridemia) quanto na função renal de ratos controle (incremento na filtração glomerular) indicando a eficiência desta suplementação.
Objective: Fish oil, rich in eicosapentaenoic acid (EPA), has shown renoprotective benefits in animal models of chronic diseases. The objective of this work was to evaluate the effects of supplementation with fish oil three times more concentrated in EPA (EPA 3X) on renal function of rats and the efficiency of this supplementation for a short period of time. Methodology: Wistar rats (n=16) were divided into two groups, control (C) and supplemented (CO), supplemented for 14 days with fish oil (EPA 3X). The following parameters were determined: weight gain, water and feed intake, urinary flow, proteinemia, triglyceridemia, osmolarity, creatinine clearance and fractional sodium excretion. Results: The supplemented rats had plasma triglyceride levels 58.4% lower than control rats (p = 0.0239), however the rest of the evaluated systemic parameters did not change. Fish oil supplementation did not alter urinary flow. However, in the CO group an increase in glomerular filtration was identified, with an increase of 67.8% on average in creatinine clearance compared to group C (p = 0.054. The mean excretion of total proteins in the urine and the fractional sodium excretion were similar between groups. Conclusion: Supplementation with fish oil three times more concentrated in EPA for a short period of time (fifteen days) caused significant changes both in systemic parameters (significant reduction in triglyceridemia) and in the renal function of control rats (increase in glomerular filtration) indicating the efficiency of supplementation.
Subject(s)
Animals , Male , Rats , Rats , Eicosapentaenoic Acid , Glomerular Filtration RateABSTRACT
OBJECTIVE: To evaluate the effect and safety of fish oil supplementation in critically ill patients. METHODS: Cochrane library, Cochrane Register of Controlled Trials, MEDLINE, EMbase, CNKI and Wanfang Data were searched for eligible literatures. The methodological quality of the included studies was evaluated and the data was analyzed by Revman5.0 software. RESULTS: Eleven high-quality randomized controlled trials were included. The quality of the eleven studies was evaluated according to Jadad scale, of which one scored four points, one scored five points, one scored six points, the others all scored seven points. The result of meta-analysis indicated that fish oil supplementation could reduce the length of stay in ICU and the time of ventilation(P < 0.00001), but it had no effect on mortality or the incidence of nosocomial infections. CONCLUSION: It is demonstrated that fish oil supplementation is effective and safe for critically ill patients. High-quality large-scale multiple-centered RCTs are required to confirm this finding.