Evidence that locustatachykinin I is involved in release of adipokinetic hormone from locust corpora cardiacaVise andre og tillknytning
1995 (engelsk)Inngår i: Regulatory Peptides, ISSN 0167-0115, E-ISSN 1873-1686, Vol. 57, nr 3, s. 297-310Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
The glandular cells of the corpus cardiacum of the locust Locusta migratoria, known to synthesize and release adipokinetic hormones (AKH), are contacted by axons immunoreactive to an antiserum raised against the locust neuropeptide locustatachykinin I (LomTK I). Electron-microscopical immunocytochemistry reveals LomTK immunoreactive axon terminals, containing granular vesicles, in close contact with the glandular cells cells. Release of AKH I from isolated corpora cardiaca of the locust has been monitored in an in vitro system where the amount of AKH I released into the incubation saline is determined by reversed phase high performance liquid chromatography with fluorometric detection. We could show that LomTK I induces release of AKH from corpora cardiaca in a dose-dependent manner when tested in a range of 10-200 microM. This is thus the first clear demonstration of a substance inducing release of AKH, correlated with the presence of the substance in fibers innervating the AKH-synthesizing glandular cells, in the insect corpora cardiaca.
sted, utgiver, år, opplag, sider
1995. Vol. 57, nr 3, s. 297-310
Emneord [en]
Locusta migratoria; Neuropeptide; Locustatachykinin, Adipokinetic hormone, Hormone release, Corpus cardiacum
HSV kategori
Forskningsprogram
zoofysiologi
Identifikatorer
URN: urn:nbn:se:su:diva-40034DOI: 10.1016/0167-0115(95)00043-BPubMedID: 7480879OAI: oai:DiVA.org:su-40034DiVA, id: diva2:326366
2010-06-222010-06-042022-02-28bibliografisk kontrollert