Research

An ivermectin-sensitive glutamate-gated chloride channel subunit from Dirofilaria immitis


Reference:

Yates, D. M. and Wolstenholme, A. J., 2004. An ivermectin-sensitive glutamate-gated chloride channel subunit from Dirofilaria immitis. International Journal for Parasitology, 34 (9), pp. 1075-1081.

Related documents:

This repository does not currently have the full-text of this item.
You may be able to access a copy if URLs are provided below.

Abstract

Dirofilaria immitis is a filarial nematode that infects dogs and causes cardiopulmonary disease. The most effective way of controlling the infection is by chemoprophylaxis, using members of the avermectin/milbemycin (A/M) class of anthelmintics, which includes ivermectin; these drugs act at invertebrate glutamate-gated chloride channels (GluCl). We have cloned two cDNAs encoding D. immitis GluCl subunits and demonstrated that at least one may be an important molecular target for the A/Ms in vivo. The subunits are orthologues of the alternatively spliced GluClalpha3A and alpha3B subunits (encoded by the avr-14 gene) previously identified in Caenorhabditis elegans and in Haemonchus contortus. Although the alternative splicing of avr-14 is conserved across the species, the processing of the mature GluClalpha3A mRNA differs in D. immitis compared to C. elegans and H. contortus. Two-electrode voltage clamp recordings were made from Xenopus oocytes injected with subunit-specific cRNAs. The DiGluCIalpha3B subunit formed channels that were gated by L-glutamate (1 - 100 mM) and ivermectin (1 muM). Oocytes injected with DiGluClalpha3A cRNA failed to respond to L-glutamate. The qualitative responses obtained were consistent with the pharmacology observed for the GluClalpha3 subunits from C. elegans and H. contortus. (C) 2004 Australian Society for Parasitology Inc. Published by Elsevier Ltd. All rights reserved.

Details

Item Type Articles
CreatorsYates, D. M.and Wolstenholme, A. J.
DOI10.1016/j.ijpara.2004.04.010
DepartmentsFaculty of Science > Biology & Biochemistry
RefereedYes
StatusPublished
ID Code3879
Additional InformationID number: ISI:000223749200009

Export

Actions (login required)

View Item