Antioxidants are compounds responsible for free radical scavenging in the body. They protect the organism from oxidative modification of cells and tissues. These modifications have been associated with degenerative diseases, atherosclerosis and carcinogenesis. Punica granatum displays high antioxidant potential due to the presence of phenolic compounds, which are capable of disease prevention. The present study showed the highest antioxidant activity in pomegranate peel than in seeds and pulp. Based on these results, pomegranate peel was used to produce dried extract that was added to commercial tomato juice and orange juice with strawberries. Analysis to determine the content of phenolic compounds and antioxidant activity was performed on pomegranate pulp, seeds and peel and in juices enriched with dried extract of pomegranate peel. The dried extract was responsible for a significant increase in antioxidant activity of the juices, proportional to the concentrations added. However, although both flavors of enriched juices displayed high antioxidant levels, the samples with higher dried extract concentrations received the lowest scores from sensory analysis participants due to the characteristic astringent flavor of pomegranate peels. Therefore, to obtain greater acceptance in the consumer market, we concluded that the maximum addition of dried pomegranate peel extract is 0.5% in tomato juice and orange juice with strawberries.
Several biological and clinical studies have suggested that conjugated linoleic acid (CLA) prevents body fat accumulation and increases lean body mass. CLA is available as a concentrated dietary supplement and is purported to provide the aforementioned benefits for people who perform physical activity. This study was conducted to evaluate the effect of a CLA-supplemented diet combined with physical activity on the body composition of Wistar rats. Two groups of Wistar rats of both sexes, between 45 and 60 days old, were fed a diet containing 5.5% soybean oil (control group) or a CLA-supplemented diet (0.5% CLA and 5.0% soybean oil) (test group). Half the rats in both groups were assigned to exercise by running on a treadmill. The biochemical and anatomical body compositions were analyzed. In both groups, CLA had no effect on the dietary consumption or the weight of the liver, heart, and lungs. However, it did influence the overall weight gain of exercised male rats and the chemical and anatomical body composition in exercised and sedentary rats of both sexes. The results confirm that a CLA-supplemented diet with and without physical activity reduced body fat accumulation in rats of both sexes. However, there is no evidence of an increase in the lean body mass of the exercised rats.
Introduction: Vitamin D (VD) deficiency is a major comorbidity, frequently associated to heart failure (HF). VD supplementation effects in these patients remain unknown. Therefore, this study aims to evaluate the impact of VD deficiency treatment or therapy correction in HF patients´ cohort.
Material and Methods: Observational retrospective single-center study enrolling patients admitted to a HF clinic with VD deficiency. VD was prescribed to these patients with reassessment of its levels 12 months later. Study population was divided in: [VD (+) group: corrected VD deficiency] and [VD (-): maintained VD deficiency]. Variables were analysed in both groups.
Results and Conclusion: Eighty-seven patients were included with no difference of baseline characteristics between the groups. Poor compliance was reported in 40% of VD (-) patients. After treatment, there were no statistically difference in variables analysed between the two groups: NYHA class I, NT-proBNP, HF hospitalizations in the previous year, Duke Activity Score Index score and 6-minute Walking Distance. VD (+) group had a statistically significant decrease of NT-proBNP level over time (1740 ± 2761 pg/mL to 851 ± 1436 pg/mL, p = 0.001). Statistically, both groups had a significant reduction of the number of HF hospitalizations, between baseline and 12 months later (1.02 ± 0.67 to 0.29 ± 0.82, p< 0.001 and 1.03 ± 1.04 to 0.40 ± 0.81, p = 0.001, for VD (+) and VD (-), respectively). Therefore, the correction of VD deficiency did not have impact in the variables analysed. The improvements reported within both groups may reflect the impact of the HF clinic optimized care.
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