Cholinergic regulation of the corpora allata in adult male loreyi leafworm Mythimna loreyi

Archives of Insect Biochemistry and Physiology
Rong Kou

Abstract

The direct effect of acetylcholine on the activation of the corpora allata (CA) was investigated in the adult male loreyi leafworm, Mythimna loreyi. Acetylcholine, in the presence of the choline esterase inhibitor physostigmine (50 microM), elicited a stimulatory effect on juvenile hormone acids (JHAs) release from the CA. Maximum effect was obtained at concentrations of 10 and 50 microM. Repeated administration of 10 microM acetylcholine on the same CA did not elicit similar stimulatory effect. Since JHA release can be significantly activated by carbachol and not by nicotine, this cholinergic effect is likely to belong to the muscarinic type. The effect of acetylcholine was significantly antagonized by gallamine triethiodide (M(2) antagonist) and 4-DAMP (M(3) antagonist), pirenzepine (M(1) antagonist), and tropicamide (M(4) antagonist) were ineffective. It is concluded that in the adult male M. loreyi, the cholinergic regulation of CA is most likely via M(2) and M(3) muscarinic receptors.

References

Jul 1, 1979·Canadian Journal of Physiology and Pharmacology·J Kraicer
Jan 1, 1990·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·C S ThompsonS S Tobe
Aug 1, 1989·Proceedings of the National Academy of Sciences of the United States of America·A P WoodheadS S Tobe
Jul 1, 1987·Physiological Reviews·E E Müller
Jan 1, 1995·Archives of Insect Biochemistry and Physiology·N A GrangerR Ebersohl
Sep 8, 1995·The Journal of Biological Chemistry·M W LorenzK H Hoffmann
Dec 1, 1996·Journal of Neuroendocrinology·I PintérZ Acs
Apr 2, 1998·International Review of Cytology·D VeelaertA De Loof
Mar 31, 1998·Environmental Health Perspectives·E J Calabrese, L A Baldwin
Aug 29, 1957·The Journal of Physiology·B KATZ, S THESLEFF
Mar 17, 1989·Science·H KataokaS J Kramer

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