Seroprevalence, distribution, and risk factors for human leptospirosis in the United States Virgin Islands.

Background: The first documented human leptospirosis cases in the U.S. Virgin Islands (USVI) occurred following 2017 Hurricanes Irma and Maria.

Degenerative changes and detection of plasminogen in fetal membranes that rupture prematurely.

Amniochorion obtained at caesarean section and vaginal delivery, at 34-36 weeks gestation and at term, have been studied by electron microscopy and immunofluorescence for evidence of amniotic epithelial degenerative changes and the presence of plasminogen. When delivery was by caesarean section between 34-36 weeks, electron microscopy revealed no degenerative changes in four cases, but in two cases they were widespread. All but one membrane obtained at term showed only minimal amniotic epithelial cell degenerative changes, but extensive change was seen when delivery was premature after premature membrane rupture.

Ouabain binding to isolated frog gastric mucosa.

Inhibition of gastric acid secretion by the cardiac glycoside, ouabain, is considerably reduced by elevating external K+ as first shown by Davenport (Proc. Soc. Exp.

Cation transport across the guinea-pig placenta perfused in situ.

1. The guinea-pig placenta perfused in situ via the umbilical circulation has been used to measure unidirectional fluxes of Na from mother to fetus, and in the reverse direction, with 24Na and 22Na. There was no significant difference between the two fluxes, each being 22 mumole.