Document Detail


Respiratory responses to somatostatin microinjections into the Bötzinger complex and the pre-Bötzinger complex of the rabbit.
MedLine Citation:
PMID:  21549809     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The respiratory responses to bilateral microinjections (30-50nl) of 5mM somatostatin (SOM) or 10mM cyclosomatostatin (c-SOM, a SOM antagonist) into the Bötzinger complex (BötC), the pre-Bötzinger complex (preBötC) and the rostral inspiratory portion of the ventral respiratory group (iVRG) were investigated in urethane-chloralose anesthetized, vagotomized, paralysed and artificially ventilated rabbits. SOM microinjections into the BötC decreased respiratory frequency and the rate of rise of phrenic nerve activity without obvious changes in its peak amplitude. SOM microinjected into the preBötC caused increases in respiratory frequency and decreases in peak phrenic activity associated with increases in its rate of rise. No changes in respiration were induced by SOM microinjections into the iVRG. Microinjections of c-SOM into the preBötC caused decreases in respiratory frequency as well as in peak amplitude and rate of rise of phrenic nerve activity. The results show that endogenously released SOM within the preBötC contributes to shape the pattern of baseline respiratory activity and that SOM receptors within the BötC and the preBötC have a role in the modulation of respiration in the rabbit.
Authors:
Tito Pantaleo; Donatella Mutolo; Elenia Cinelli; Fulvia Bongianni
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-28
Journal Detail:
Title:  Neuroscience letters     Volume:  -     ISSN:  1872-7972     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-5-9     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7600130     Medline TA:  Neurosci Lett     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Ireland Ltd.
Affiliation:
Dipartimento di Scienze Fisiologiche, Università degli Studi di Firenze, Viale G.B. Morgagni 63, I-50134 Firenze, Italy.
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