Document Detail

Discontinuous ventilation in insects: protecting tissues from O2.
MedLine Citation:
PMID:  16581315     Owner:  NLM     Status:  MEDLINE    
The "oxidative damage model" of proposes that the respiratory system of insects operates in manner that reduces and then regulates the partial pressure of oxygen around the tissues at a very low level. This is achieved through the actions of the discontinuous gas exchange cycle. Resting insects often exhibit a ventilatory cycle in which the spiracular valves severely limit gas exchange. The "oxidative damage model" argues that this pattern serves to minimize oxidative damage to the tissues. This interpretation is discussed in the context of a large literature describing oxidative damage in insects and other animals as normal a feature of organismal aging. Evidence is presented from a number of animal phyla demonstrating respiratory strategies designed to maintain similarly low partial pressures of oxygen at the tissue level.
Timothy J Bradley
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Publication Detail:
Type:  Journal Article; Review     Date:  2006-04-11
Journal Detail:
Title:  Respiratory physiology & neurobiology     Volume:  154     ISSN:  1569-9048     ISO Abbreviation:  Respir Physiol Neurobiol     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-11-06     Completed Date:  2007-02-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101140022     Medline TA:  Respir Physiol Neurobiol     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  30-6     Citation Subset:  IM    
Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697-2525, USA.
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MeSH Terms
Carbon Dioxide / metabolism
Insects / physiology*
Models, Biological
Oxidative Stress / physiology
Oxygen / metabolism*
Pulmonary Gas Exchange / physiology*
Respiratory Mechanics / physiology*
Reg. No./Substance:
124-38-9/Carbon Dioxide; 7782-44-7/Oxygen

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

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