Kaskani C, Poulos CP, Goldsworthy GJ. The effects of linear and cyclic analogs of Locmi-DH, Dippu-DH(46) and Dippu-DH(31) on appetitive behavior in Locusta migratoria.
Peptides 2012;
34:258-61. [PMID:
21524674 DOI:
10.1016/j.peptides.2011.04.009]
[Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2011] [Revised: 04/07/2011] [Accepted: 04/07/2011] [Indexed: 11/23/2022]
Abstract
The effects of analogs of the diuretic peptides Locmi-DH, Dippu-DH(46) and Dippu-DH(31) on two aspects of appetitive behavior are investigated in previously food-deprived nymphs of Locusta migratoria. The analogs tested are the C-terminal 15-mer and nonapeptides and their corresponding cyclic analogs. At a nominal dose of 1pmol injected per nymph, the linear fragments and their cyclic analogs of Dippu-DH(46) display no significant effects on the latency to feed or on the length of the first meal in nymphs. However, at the same dose, the linear fragments of Dippu-DH(31) and their cyclic analogs, and analogs of Locmi-DH modulate appetitive behavior: they are anorexigenic in reducing the duration of the first meal, and generally increasing the latency to feed. The cyclic analogs of Dippu-DH(31) are at least as effective as their linear counterparts in influencing these aspects of appetitive behavior in locust nymphs.
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