| Too much of a good thing: how insects cope with excess ions or toxins in the diet. | |
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MedLine Citation:
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PMID: 19151211 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Much of our understanding of the ionoregulatory and excretory physiology of blood-feeding insects can be traced to a series of papers by Simon Maddrell and colleagues in the 1970s and 1980s. These studies of the Malpighian (renal) tubules of Rhodnius prolixus revealed a number of physiological adaptations to the short-term and long-term stresses associated with blood feeding. More recent electrophysiological studies using voltage- and ion-selective microelectrodes have extended our understanding of the mechanisms and control of ion transport by the secretory and reabsorptive segments of the Rhodnius Malpighian tubule. The discovery that the rates of transport of organic anions, urates and Ca(2+) are synchronized to coincide with the appearance of the products of blood meal digestion in the haemolymph of Rhodnius has stimulated parallel studies in Drosophila. This recent research has examined how excretory mechanisms for organic cations and organic anions are altered by exposure to such compounds in the diet. These studies also show that the Drosophila Malpighian tubule provides a useful model for analysis of the roles of transporters such as P-glycoproteins and multidrug resistance-associated proteins in the excretion of toxins. |
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Authors:
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M J O'Donnell |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Review |
Journal Detail:
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Title: The Journal of experimental biology Volume: 212 ISSN: 0022-0949 ISO Abbreviation: J. Exp. Biol. Publication Date: 2009 Feb |
Date Detail:
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Created Date: 2009-01-19 Completed Date: 2009-04-27 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0243705 Medline TA: J Exp Biol Country: England |
Other Details:
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Languages: eng Pagination: 363-72 Citation Subset: IM |
Affiliation:
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Department of Biology, McMaster University, Hamilton, Ontario, Canada L8S 4K1. odonnell@mcmaster.ca |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Diet* Drosophila / physiology* Hazardous Substances / metabolism Insects / physiology* Ion Transport / physiology* Malpighian Tubules / physiology* P-Glycoprotein / metabolism Water-Electrolyte Balance / physiology* |
| Chemical | |
Reg. No./Substance:
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0/Hazardous Substances; 0/P-Glycoprotein |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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