Document Detail


An in vitro method for recording the electrical activity of the isolated heart of the adult Drosophila melanogaster.
MedLine Citation:
PMID:  11573820     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A recording chamber for monitoring the electrophysiological properties of the isolated heart of adult Drosophila melanogaster has been developed. Spontaneously generated field potentials of constant amplitude can be recorded for 6-8 h (n = 14); in very few cases, records were maintained stable for over 10 h (n = 4), and in some cases below 6 h (n = 5). The chamber consists of the tip of a micropipette, which allows for monitoring the field potential generated by the spontaneously contracting heart. The method can produce accurate information about the heart rate and the amplitude of the cardiac action potential. The preparation can be used for pharmacological studies on the heart of D. melanogaster since it responds, with an increase in the heart rate, to unusually low concentrations of octopamine, 1 nM, a compound with cardioaccelerating properties for insect heart. The recording system can be easily modified for experiments on the heart of other insects. Finally, the isolated heart of D. melanogaster provides a simple method for identifying mutations that affect heart physiology.
Authors:
C Papaefthmiou; G Theophilidis
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  In vitro cellular & developmental biology. Animal     Volume:  37     ISSN:  1071-2690     ISO Abbreviation:  In Vitro Cell. Dev. Biol. Anim.     Publication Date:    2001 Jul-Aug
Date Detail:
Created Date:  2001-09-27     Completed Date:  2002-02-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9418515     Medline TA:  In Vitro Cell Dev Biol Anim     Country:  United States    
Other Details:
Languages:  eng     Pagination:  445-9     Citation Subset:  IM    
Affiliation:
Department of Zoology, School of Biology, Aristotle University, Greek Macedonia, Hellas, Greece.
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MeSH Terms
Descriptor/Qualifier:
Action Potentials
Animals
Drosophila melanogaster / genetics,  physiology*
Electrophysiology
Heart / drug effects,  physiology
Microelectrodes
Mutation
Myocardial Contraction / physiology
Octopamine / pharmacology
Chemical
Reg. No./Substance:
104-14-3/Octopamine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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