Publications by authors named "G M Guimaraes"

This study aimed to investigate the impact of adding aroeira leaf extract (Schinus terebinthifolius Raddi) to a yam starch film matrix, focusing on the development of potentially active films and the evaluation of their physicochemical, mechanical, optical, and antioxidant properties. Films were produced using the casting method with varying extract concentrations (0, 3, 6, 12, and 15 %), yam starch (2 %), and glycerol (1 %). The antioxidant properties were analyzed by determining the total phenolic content, 2,2-Diphenyl-1-Picrylhydrazyl (DPPH) radical scavenging, ferric reducing power, and 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) radical elimination, which revealed a significant increase in antioxidant properties as the extract concentration increased.

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Interactions between birds and plastics cause several damages like death due to entanglement and blockage of the digestive tract. However, the impacts of plastics on both marine and terrestrial bird nests require further investigation. Recently, Lopes et al.

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Introduction: Healthcare workers in both the public and private systems were on the front line of the fight against the COVID-19 pandemic. As a consequence, they faced uncertainty, heavy demand, excessive working hours, and the fear of contracting the virus.

Objectives: To investigate the occurrence of psychological distress among public and private healthcare workers at the start of the COVID-19 pandemic.

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Article Synopsis
  • * In a study, mice treated with W. paramesenteroides WpK4 showed increased intestinal mucus production, better villi regeneration, and 100% survival, compared to 60% survival in the control group after chemotherapy with 5-fluorouracil (5-FU).
  • * The probiotic strain can produce and metabolize tryptophan, and its protective effects are associated with increased expression of tryptophan-related molecules in the mice, but these benefits are negated when an AhR inhibitor is
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Osteosarcoma (OS) is the most frequent primary malignant bone tumor among children and adolescents, with a peak of incidence in the second decade of life. The presence of metastasis at diagnosis in OS patients significantly decreases the chances of survival and new therapy approaches are needed. The IGFBP5 gene is related to osteoblasts metabolism and some studies have pointed out a role of its low expressions in OS development and metastasis.

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