Incidence and estimated risk of residual transmission of hepatitis a virus and parvovirus B19 by blood transfusion in the state of Rio De Janeiro - Brazil: a retrospective study.

Background: Nonenveloped viruses, such as hepatitis A virus (HAV) and parvovirus B19 (B19V), are not inactivated by detergents and solvents commonly used to manufacture plasma derivatives. Cases of transfusion-transmitted HAV and B19V have already been described in several countries. This study aimed to determine the incidence of HAV and B19V asymptomatic infections in blood donors from Rio de Janeiro and evaluate the residual risk of transmission to blood derivative recipients.

Chronic stress triggers impairments of the redox status of salivary glands associated with different histological responses in rats.

Stress occurs as a reaction to mental and emotional pressure, anxiety, or scarring. Chronic stress is defined as constant submission to these moments. It can affect several body systems, increase blood pressure, and weaken immunity, thereby interfering with physiological health processes.

Establishment of a cell culture from the frog Leptodactylus fuscus as a model for (eco)toxicological assays.

Leptodactylus fuscus is a frog species widely distributed in the Neotropical region, occurring in several biomes, which makes it a potential biomonitor of environmental conditions. To advance the establishment of this species in this field, we developed a fibroblast-like cell line derived from the digits of the forelimbs (LFUfd) and evaluated its response to possible environmental stressors. An adult male L.

Clinical Tools to Assess Functional Capacity During Risk Assessment Before Elective Noncardiac Surgery : A Scoping Review.

Background: Functional capacity is critical to preoperative risk assessment, yet guidance on its measurement in clinical practice remains lacking.

Purpose: To identify functional capacity assessment tools studied before surgery and characterize the extent of evidence regarding performance, including in populations where assessment is confounded by noncardiopulmonary reasons.

Data Sources: MEDLINE, EMBASE, and EBM Reviews (until July 2024).

Natural modulation of redox status throughout the ontogeny of Amazon frog Physalaemus ephippifer (Anura, Leptodactylidae).

During their development, amphibians undergo various physiological processes that may affect their susceptibility to environmental pollutants. Naturally occurring fluctuations caused by developmental events are often overlooked in ecotoxicological studies. Our aim is to investigate how biomarkers of oxidative stress are modulated at different stages of larval development in the Amazonian amphibian species, Physalaemus ephippifer.