Second Messengers in the Locomotor-Sensory System of First Multicellulars. The IP sub(3)-Containing Compartments in Chemoreceptor Cells of the Comb Jelly Beroe cucumis from Data of Cytochemical Study

• Published in: Journal of evolutionary biochemistry and physiology 2002-05, Vol.38 (3), p.318-329
• Main Authors: Aronova, M Z, Alekseeva, T M
• Format: Article
• Language: English
• Subjects: Beroe cucumis
• ISSN: 0022-0930; 1608-3202
• DOI: 10.1023/A:1020788727676

Result of the performed electron microscopy cytochemical study was an indirect detection of intracellular localization of inositol 1,4,5-triphosphate according to sites of its binding with specific phosphatase in receptor and secretory cells of epithelium surrounding actinostome of the comb jelly Beroe cucumis. The highest level of the deposit of the enzymatic cytochemical reaction product was revealed in chemoreceptor cells of I type. In all cells of the epithelium as well as in nerve terminals and neuroplexus elements, the following compartments had the highest deposit content: cellular membrane and glycocalyx areas, microtubules, microfilaments, mitochondria, neurotubules, and structures of the synaptic apparatus. The obtained data expand the picture of cytochemical distribution and of the contents of the deposit compatible with localization of components of inositol pathway in receptor cells of the locomotor-sensory system of Beroe cucumis [1, 2] and indicate its essential role in the mechanism of chemosensory transduction.