Attenuation of neutrophil adhesion and formation of neutrophil extracellular traps by pooled human immune globulins.

Introduction: This study investigated the efficacy of pooled human immune globulins (Flebogamma DIF) to combat the formation of neutrophil extracellular traps (NETs) and NETosis, along with neutrophil adhesion to corneal epithelial cells in response to dry eye disease relevant stimuli.

Methods: Human neutrophils were isolated by bead-based immunomagnetic depletion of non-target cells from human whole blood. NETosis was induced using phorbol 12-myristate 13-acetate (PMA) or anti-citrullinated histone 4 R3 antibody (H4R3 ACPA).

Alveolar macrophages are early targets of mumps virus.

Formerly a common childhood pathogen, mumps virus (MuV) remains active worldwide, despite relatively high vaccine coverage. MuV is thought to infect the upper respiratory tract before disseminating to other organs; however, the early cellular targets of MuV in vivo are unknown. To address this, we generated a green fluorescent protein (GFP)-tagged vaccine strain (JL5) of MuV to infect leukocytic cell lines and found that replication was greatest in monocytes.

Impact of Anti-CD4 Autoantibodies on Immune Reconstitution in People With Advanced Human Immunodeficiency Virus.

Background: Despite suppressive antiretroviral therapy (ART), 15%-30% of people with human immunodeficiency virus (HIV) experience a limited recovery of CD4 T cells. Although autoantibodies against the CD4 receptor have previously been identified in people with HIV (PWH), little is known about their longitudinal impact on CD4 T-cell reconstitution.

Methods: Anti-CD4 autoantibodies were evaluated by the fluid-phase luciferase immunoprecipitation systems immunoassay in ART-naive people with advanced HIV (CD4 count ≤100 cells/µL), PWH with CD4 count >200 cells/µL, long-term nonprogressors, people with idiopathic CD4 lymphopenia, people with autoimmune lymphoproliferative syndrome, and healthy volunteers without HIV.

Factors influencing confidence in tracheal intubation among neonatal trainees: A questionnaire-based study.

Aim: Tracheal intubation (TI) is pivotal in managing critically ill neonates. This study aims to investigate the disparities in exposure and training techniques that affect self-perceived confidence in neonatal fellows concerning TI.

Methods: A comprehensive, structured questionnaire-based survey was conducted among neonatal trainees from October to November 2022.