Publications by authors named "A Trujillo Ascanio"
The use of continuous inotropy in patients with advanced heart failure (HF) has been historically controversial due to the prevailing notion that it will increase mortality. In practice, clinicians have continued to revisit this idea as there remains a lack of treatment options for patients in stage D HF. Clinical trials in the past have generally not shown favorable effects of long-term chronic infusions of positive IV inotropic agents on symptoms and exercise tolerance.
View Article and Find Full Text PDFContext: Assisted living facility (ALF) residents are especially vulnerable to SARS-CoV-2 infection due to the age and comorbidities of the resident population and the social nature of these facilities.
Objective: To collate all New York State Department of Health guidance and regulations to control transmission of SARS-CoV-2 infection within ALFs from March 2020 through December 2022 and to include US Food and Drug Administration COVID-19 testing and vaccine authorizations.
Design: A narrative chronological review of all New York State Department of Health guidance.
Article Synopsis
- The text discusses gene flow and isolation as key processes that influence genetic diversity, emphasizing the importance of understanding their geographic and temporal variations for promoting diversification.
- In the context of Desert Spiny Lizards and Baja Spiny Lizards, the study investigates geographic barriers such as the Colorado River and Western Continental Divide to determine their role in genetic differentiation.
- Results indicate that while the Western Continental Divide acts as a strong barrier to gene flow, the Colorado River is less restrictive; the study underscores the utility of genomic data and multi-source analyses to better understand the complex nature of lineage divergence.
Article Synopsis
- Hybridization enables genetic mixing between different species, influenced by both chance and natural selection.
- In a study of Caribbean anole hybrids, researchers found that these hybrids mainly display characteristics of one species (A. pulchellus) but carry mitochondrial DNA from another (A. krugi), showing evidence of multiple hybridization events.
- Genomic analysis revealed that while hybrids predominantly inherit genes from A. pulchellus (80%-90% of their genetic makeup), certain A. krugi genes connected to development and immune function are more likely to introgress due to selective advantages, suggesting an evolutionary preference for compatible mitochondrial and nuclear genes.
The chemical composition and stoichiometry of vertebrate bodies changes greatly during ontogeny as phosphorus-rich bones form, but we know little about the variation among species during early development. Such variation is important because element ratios in animal bodies influence which element limits growth and how animals contribute to nutrient cycling. We quantified ontogenetic variation from embryos through 2-3 months of age in 10 species of fish in six different families, ranging in adult size from 73 to 720 mm in length.
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