Publications by authors named "G Santana"
Since December 2019, a new form of Severe Acute Respiratory Syndrome (SARS) has emerged worldwide, caused by SARS coronavirus 2 (SARS-CoV-2). This disease was called COVID-19 and was declared a pandemic by the World Health Organization in March 2020. Symptoms can vary from a common cold to severe pneumonia, hypoxemia, respiratory distress, and death.
View Article and Find Full Text PDFAssociation between low-density lipoprotein cholesterol levels and all-cause mortality in patients with coronary artery disease: a real-world analysis using data from an international network.
Sci Rep
November 2024
The current cholesterol guidelines recommend maintaining low levels of low-density lipoprotein cholesterol (LDL-C) in patients with coronary artery disease (CAD). However, recent studies have suggested that both very low and very high LDL-C levels may be associated with increased mortality in the general population. We utilized data from TriNetX, a global health research network, to investigate the association between LDL-C levels and all-cause mortality in patients with CAD.
View Article and Find Full Text PDFArticle Synopsis
- Microplastics (MPs) in the environment are a major concern due to their negative effects on aquatic ecosystems and human health, with factors like aging and photodegradation altering their properties.
- Researchers studied how aging impacts PET microplastics (<100 μm) using accelerated photoaging in a UV-B chamber and various characterization techniques.
- Results indicated that aged MPs have increased adsorption capacity for the pesticide chlorpyrifos, suggesting they could transport harmful pollutants in aquatic environments more effectively than pristine microplastics.
Article Synopsis
- * This study focuses on how UVB radiation affects polyethylene microplastics, revealing that longer exposure changes their shape and chemistry, allowing them to absorb pesticides like chlorpyrifos more effectively by enhancing surface interactions and forming micropores.
- * The findings highlight significant changes in microplastics after aging, including increased pollutant absorption and structural changes, indicating the need for more research on how aging affects the environmental risks of microplastics.
Article Synopsis
- * Brazil's Unified Health System (SUS) faces significant challenges, including underfunded working conditions, poor infrastructure, and low financial incentives for healthcare careers.
- * The USMLE has become a popular option for Brazilian medical professionals aiming to improve their career prospects while addressing the systemic issues within Brazil's medical education and healthcare system.