Biogeochemical patterns in prey species reveal complex mercury exposure pathways from the environment to Aleutian Steller sea lions.

Several wildlife species exhibit marked spatial variation in toxicologically relevant tissue concentrations of mercury across the Aleutian Islands of Alaska, most notably the endangered Steller sea lion (Eumetopias jubatus). To unravel potential environmental and trophic pathways driving mercury variation in this species of concern, we investigated spatiotemporal and ecological patterns in total mercury concentrations and stable isotope ratios of carbon and nitrogen from muscle tissues of twelve mid-trophic level prey species of the region (n = 1461). Dividing samples into island groups explained biogeochemical variation better than larger spatial resolutions, with Amchitka Pass and Buldir Pass acting as strong geographic break points.

Deepening the participation of neurodivergent youth in qualitative mental health research: Co-development of a general approach and the evaluation of its implementation in a study on emotion.

Background: There is a growing expectation that neurodivergent young people, such as those with diagnoses of attention-deficit/hyperactivity disorder (ADHD) and/or autism, should play a central role in shaping research on neurodevelopmental conditions. However, currently, their involvement is typically limited to arms-length advice. To address this, the (RE-STAR) programme has co-developed a framework for deepening the involvement of neurodivergent participants in translational research.

Atypical anti-GBM disease in pregnancy.

A woman in her 20s presented with nephrotic syndrome and hyperemesis in early pregnancy. Pertinent initial investigations revealed a severe acute kidney injury, a serum albumin of 19 g/L, a random protein creatinine ratio of 800 g/mol and microscopic haematuria. All immunological and infection serology testing including anti-glomerular basement membrane (anti-GBM; ELISA) were negative.