Publications by authors named "O C Barreto"

Introduction Persistent postoperative pain leads to impaired patient recovery and delays in discharge of patients. The aim was to compare the efficacy of 0.5% bupivacaine to two varying concentrations of ropivacaine, specifically 0.

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Coronavirus disease 2019 (COVID-19) vaccines effectively protect against severe disease and death. However, the impact of the vaccine used, viral variants, and host factors on disease severity remain poorly understood. This work aimed to compare COVID-19 clinical presentations and outcomes in vaccinated and unvaccinated patients in Mexico City.

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Article Synopsis
  • The COVID-19 pandemic has resulted in over three million deaths, highlighting the need to understand the disease's pathology and factors leading to severe outcomes.
  • A study examined the respiratory microbiota of COVID-19 patients compared to healthy individuals and patients with non-COVID-19 pneumonia, revealing significant differences in microbial composition and diversity.
  • Results indicated that increased dysbiosis and loss of microbial complexity in patients with COVID-19 are linked to worse clinical outcomes, suggesting the respiratory microbiota may influence disease severity.
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Objectives: The goal of this study was to determine the chemical composition of the passivation layer of three clinically available orthodontic miniscrews at different depths.

Materials And Methods: The miniscrews used were Aarhus Mini-Implant (AAR), IMTEC Ortho (IMT), and VectorTAS (VEC). The chemical compositions of the as-received miniscrews were determined by X-ray photoelectron spectroscopy (XPS).

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Here we identify a novel protein, named Parcs for pro-apoptotic protein required for cell survival, that is involved in both cell cycle progression and apoptosis. Parcs interacted with Apaf-1 by binding to the oligomerization domain of Apaf-1. Apaf-1-mediated activation of caspase-9 and caspase-3 was markedly decreased in a cytosolic fraction isolated from HeLa cells with reduced parcs expression.

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