Biomarkers.

Background: Tau PET provides continuous measurements of tau tangle pathology in the human brain. However, establishing cutoffs is crucial for selecting individuals for treatment in clinical trials or practice. In the absence of postmortem data, PET cutoffs must be established using statistical methods based on what is considered normal tracer uptake.

Biomarkers.

Background: Predicting Alzheimer's disease (AD) and frontotemporal dementia (FTD) using polygenic risk scores (PRS) for late-onset forms holds promise, but its accuracy might be influenced by social determinants of health (SDOH). This study explores how considering SDOH alongside genes can improve prediction, focusing on potential differences for each disease.

Methods: Employing logistic regression in 677 individuals (287 AD, 102 FTD, and 288 controls) aged 40-80 from the ReDLat study across six Latin American countries, we investigated the potential for SDOH to modify the association between PRS and susceptibility to AD and FTD.

Alzheimer's Imaging Consortium.

Background: Tau PET provides continuous measurements of tau tangle pathology in the human brain. However, establishing cutoffs is crucial for selecting individuals for treatment in clinical trials or practice. In the absence of postmortem data, PET cutoffs must be established using statistical methods based on what is considered normal tracer uptake.

Buffalo milk quality: a study of seasonal influence on composition and somatic cell count.

Despite buffalo milk being an important food worldwide, not much is known about factors that influence its quality on Brazilian buffalo milk farms. It ranks second in total volume of milk production, with cow milk in first place, but a lack of minimum legal parameters for buffalo milk is another problem faced by some countries, as it happens in Brazil where buffalo population represents less than one percent of dairy cows, even though Brazilian buffalo herd is one of the largest in Latin America, with a successful dairy processing chain. This study investigated the composition and somatic cell counts (SCC) of buffalo milk produced in a high-altitude tropical region in the State of Minas Gerais, Brazil, where buffalo calving naturally happens from February to May.

Angiotensin-(1-7) decreases inflammation and lung damage caused by betacoronavirus infection in mice.

Objective: Pro-resolving molecules, including the peptide Angiotensin-(1-7) [Ang-(1-7)], have potential adjunctive therapy for infections. Here we evaluate the actions of Ang-(1-7) in betacoronavirus infection in mice.

Methods: C57BL/6J mice were infected intranasally with the murine betacoronavirus MHV-3 and K18-hACE2 mice were infected with SARS-CoV-2.