A new twist on superantigen-activated autoimmune disease.

Superantigen-induced (Sag-induced) autoimmunity has been proposed as a mechanism for many human disorders, without a clear understanding of the potential triggers. In this issue of the JCI, McCarthy and colleagues used the SKG mouse model of rheumatoid arthritis to characterize the role of Sag activity in inflammatory arthritis by profiling arthritogenic naive CD4+ T cells. Within the diseased joints, they found a marked enrichment of T cell receptor-variable β (TCR-Vβ) subsets that were reactive to the endogenously encoded mouse mammary tumor virus (MMTV) Sag.

The Outcome of Ongoing Adult Endocrine Engagement Following Transition From Paediatric Care.

Objective: Transition is important for continuity of care for patients with chronic health conditions. The aim of this service evaluation was to determine the effectiveness of a transition clinic at a tertiary hospital with long-term attendance in the adult endocrine service.

Design: Retrospective case notes review of patients seen by paediatric endocrinology at the Royal Hospital for Children, Glasgow, at the time of transition to adult services, between 2012 and 2022.

mpactR: an R adaptation of the metabolomics peak analysis computational tool (MPACT) for use in reproducible data analysis pipelines.

mpactR automates pre-processing of liquid chromatography-tandem mass spectrometry (LC-MS/MS) data from microbiological samples to correct mispicked peaks, resolve inter-sample variation in abundance across technical replicates, account for in-source ion fragmentation, and remove background noise to yield high-quality mass spectrometry features. The package is available through CRAN and GitHub.