Intestinal peptides as circulating hormones: Release of tachykinin-relatedpeptide from the locust and cockroach midgut

摘要

Tachykinin-related peptides (TRPs) in the locust Locusta migratoria and the cockroach Leucophaea maderae have stimulatory effects on some muscles that are not innervated by TBP-containing neurons. Thus, these tissues may be affected by circulating TRPs, Here, we have investigated whether the midgut is the source of circulating TRPs,