Women remain underrepresented in leadership positions in academic gastroenterology throughout the United States.

Background: Publication history is a key factor in securing academic promotion, but historical underrepresentation of women in gastroenterology may be an ongoing obstacle to achieving gender parity in leadership positions.

Methods: We carried out a cross-sectional study of gastroenterology programs in the United States, with data including faculty and trainee names, leadership positions, Hirsch indices, and year of first gastroenterology certification gathered from 1 February 2020 to 1 March 2020. Our outcomes of interest were: 1) sex representation in various leadership positions in academic gastroenterology departments; and 2) mean difference in Hirsch indices between men and women, for which we used univariate and multivariate regression models.

Antimitochondrial antibody heterogeneity and the xenobiotic etiology of primary biliary cirrhosis.

Unlabelled: Antimitochondrial antibodies (AMAs) directed against the lipoyl domain of the E2 subunit of pyruvate dehydrogenase (PDC-E2) are detected in 95% of patients with primary biliary cirrhosis (PBC) and are present before the onset of clinical disease. The recent demonstration that AMAs recognize xenobiotic modified PDC-E2 with higher titers than native PDC-E2 raises the possibility that the earliest events involved in loss of tolerance are related to xenobiotic modification. We hypothesized that reactivity to such xenobiotics would be predominantly immunoglobulin M (IgM) and using sera from a large cohort of PBC patients and controls (n = 516), we examined in detail sera reactivity against either 6,8-bis(acetylthio) octanoic acid (SAc)-conjugated bovine serum albumin (BSA), recombinant PDC-E2 (rPDC-E2) or BSA alone.