Capacidade antioxidante total da dieta e massa muscular em cirróticos: estudo transversal

Abstract

Introduction and Objectives: Oxidant/antioxidant mechanisms are found to be imbalanced in cirrhotic patients, and may contribute significantly to deterioration of hepatic function. Several findings indicate that these imbalances seem to be related to sarcopenia and consequently related to negative clinical outcomes and mortality. The objective of this study was to evaluate the dietary total antioxidant capacity of the cirrhotic diet (CATd (dTAC) and its relation with muscle mass. Methods: This is a crosssectional, descriptive and analytical study where participants were selected from a hepatology outpatient clinic at the Hospital Universitário / UFJF. Dietary assessment was carried out using the quantitative food frequency questionnaire (QQFA), as well as the CATd in mmol/g, calculated by the FRAP theoretical method. Biochemical data were collected from the chart (albumin, transaminases, leukocytes, platelets and bilirubins) and anthropometric evaluation (arm circumference, arm muscle area, skin folds, thumb adductor muscle thickness, dominant palmar grip) was performed. The median of the CATd (10.5 mmol / d) was calculated and tests were performed to verify the relationship of CATd consumption with the anthropometric, biochemical and disease severity parameters. No statistical significance was observed in any of the biochemical variables and severities through the Child-Pugh classification Results: Cirrhotic patients who had a higher dietary TAC had higher hand grip strength (HGS; p=0.029) and adductor pollicis muscle thickness (APMT; p=0.027) compared to those with a lower dietary TAC. There was no association of cirrhosis severity with dietary TAC. The same occurred with lifestyle characteristics, occurrence of comorbidities, anthropometry, and biochemical parameters. Conclusions: The CATd was positively associated with the arm muscle area and the palmar grip strength, suggesting that the low consumption of antioxidants may be related to sarcopenia in cirrhotic patients.