Expression of alpha smooth muscle actin decreases with ageing and increases upon lumen obstruction in mouse brain pericytes.

Cerebral pericytes are mural cells covering brain microvessels, organized as ensheathing, mesh and thin-strand pericytes. These latter two, together called capillary pericytes, have low levels of alpha smooth muscle actin (α-SMA), regulating basal vascular tone and applying a slow influence on cerebral blood flow. Pericytes are subject to alterations in ageing which may be even more pronounced in age-related pathologies, including microinfarcts, which usually affect a large number of vessels in the ageing brain.

Assessing well-being of university students and evaluation of its determinants.

Background: Our study aimed to examine the well-being of students studying at the three (non-medical) faculties of Semmelweis University Budapest, to analyse the relationships between well-being, stress, emotional support, sleep patterns, sport, and further variables like smoking, consumption of sleeping pills, sedatives, psychoactive agents, energy drinks, and exam anxiety.

Methods: In our cross-sectional study, we asked 561 students of the Semmelweis University of Budapest; two internationally recognised instruments were used: the WHO-5 well-being index and the Perceived Stress Scale.

Results: The mean WHO-5 well-being index was 42.

Helper T Cells are Hyperactive and Contribute to the Dysregulation of Antibody Production in Patients with Rheumatoid Arthritis.

Rheumatoid arthritis (RA) is a systemic autoimmune disease, mediated by a complex interaction between B cells and various subsets of T cells. Dysfunction of helper T (Th) and regulatory T (Treg) cells may contribute to the breakdown of self-tolerance and the progression of autoimmune disease. In this study, we investigated the activity of Th and Treg cells on the differentiation of autologous B cells in vitro using cell cultures from the peripheral blood of healthy controls (HCs) and RA patients.

Variability of theory of mind versus pragmatic ability in typical and atypical development.

Introduction: Numerous studies have linked deficits in Theory of Mind (ToM) with language problems. We aimed to explore the similarities and differences between children's patterns of performance on a ToM task that requires minimal linguistic skill and a pragmatic inference task that relies on both ToM and language. We assessed variability in pragmatic inference skills and ToM across populations of children (8-14 years) displaying varying cognitive profiles.