Ultrastructural Changes Associated with K+-evoked Peptide Secretion from a Neurohemal Organ of the Crab, Cardisoma Carnifex

Overview

Journal Cell Tissue Res

Specialties Anatomy & Histology
Cell Biology

Date 1985 Jan 1

PMID 4042141

Citations 2

Authors

T M Weatherby

B A Haylett

Affiliations

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Abstract

Electron-microscopic comparison of K+-stimulated and unstimulated crab sinus glands reveals significant differences in neurosecretory terminal morphology. Sinus glands exposed to elevated K+ saline for increasing periods of time show increasing numbers of exocytotic release profiles, vacuoles, and multilamellate bodies, and a decrease in the number of microvesicles within 10 micron of release sites. These morphological changes are well correlated with secretion of red-pigment-concentrating hormone, as determined by bioassay of perfusate from the individual preparations.

Citing Articles

Ultrastructural changes in isolated peptidergic nerve terminals induced by digitonin permeabilization and K+ stimulation in the sinus gland of the crab, Cardisoma carnifex.

Nordmann J, Weatherby T, Haylett B Cell Tissue Res. 1986; 246(2):365-71.

PMID: 3779814 DOI: 10.1007/BF00215899.

Autoradiographic evidence that transport of newly synthesized neuropeptides is directed to release sites in the X-organ--sinus gland of Cardisoma carnifex.

Stuenkel E, Gillary E, Cooke I Cell Tissue Res. 1991; 264(2):253-62.

PMID: 1878945 DOI: 10.1007/BF00313962.

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