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The effect of a 20-min intravenous infusion of prostaglandin E2 (0-08 mug kg-1 min-1) or of prostaglandin F2 alpha (0-8 mug kg-1 min-1) on the segmental pressures in the sigmoid colon was studied in 12 patients. Prostaglandin F2 alpha had no measurable effect, but prostaglandin E2 significantly inhibited sigmoid motility.
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Hunt et al. (1975) studied this question.
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