“Incubation of L …. Addition of prostaglandin E1 (… taurine at all time points examined and increased the threshold for osmolyte release to 290 mOsM. Maximal PGE1 stimulation (250–300% of … butaprost (9-oxo-11α,16S-dihydroxy-17-cyclobutyl-prost-13E-en-1-oic acid) was able to enhance taurine efflux.”