Publications by authors named "M A Cevallos"
Article Synopsis
- The study focuses on the anatomy of the External Carotid Artery (ECA) and identifies a rare variant where the Occipital Artery (OA) and Ascending Pharyngeal Artery (APA) originate from the Internal Carotid Artery (ICA) instead of the typical ECA branches.
- Dissection of 28 formaldehyde donors revealed this variation in one case, specifically on the right side, with a notable bifurcation angle of nearly 180 degrees.
- The findings highlight the importance of recognizing this variation for surgeons and radiologists, improving procedural planning and reducing complications in head and neck surgeries.
Article Synopsis
- Escherichia coli JU15 is engineered to efficiently produce D-lactic acid from C5 and C6 sugars at 37 °C, but requires strains that can grow near 50 °C for optimal enzyme activity in lignocellulosic biomass processing.
- The new strain GT48 was developed through adaptive evolution to thrive at temperatures up to 48 °C, successfully fermenting glucose to D-lactate at 47 °C with optimal pH at 6.3.
- GT48 outperformed the original strain by producing D-lactate at significantly higher levels (over 1.4 times better) when used in a simultaneous saccharification and fermentation process without needing a pre-saccharification stage.
Several risk factors were associated with mortality in patients with coronavirus disease 2019 (COVID-19) infection in intensive care units (ICU). We assessed the effect of risk factors related to the characteristics and clinical history of the population, laboratory test results, drug management, and type of ventilation on the probability of survival/discharge from the ICU. A retrospective cohort multicentric study of adults with COVID-19 admitted to the ICU between March 2020 and December 2021.
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- Hospital-acquired severe infections are linked to genetic factors related to antibiotic resistance, specifically in strains that may carry genes for carbapenem and tigecycline resistance.
- A study analyzed 384 genomes from clinical and non-clinical sources globally, revealing significant variability in genetic content, with antibiotic resistance genes largely found in the accessory genome.
- The research indicates that while core genomes of environmental and hospital isolates are similar, the hospital strains acquire antibiotic resistance genes due to high selective pressure, with no geographical bias in their distribution.
The blaNDM-1 gene and its variants encode metallo-beta-lactamases that confer resistance to almost all beta-lactam antibiotics. Genes encoding blaNDM-1 and its variants can be found in several Acinetobacter species, and they are usually linked to two different plasmid clades. The plasmids in one of these clades contain a gene encoding a Rep protein of the Rep_3 superfamily.
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