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Reproductive phase dependent daily variation in melatonin receptors (Mel(1a) and Mel(1b)), androgen receptor (AR) and lung associated immunity of Perdicula asiatica.
MedLine Citation:
PMID:  21320630     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Our knowledge about involvement of melatonin in regulation of lung associated immune system (LAIS) is still poor though the melatonin receptor types (Mel(1a) and Mel(1b)) have been localized in lungs of some wild birds. We thought to explore the correlation between daily variation (within a 24h time scale) in peripheral melatonin and testosterone along with expression of melatonin receptors (Mel(1a) and Mel(1b)) and androgen receptor (AR) in lungs during reproductively active and inactive phases. Receptor expression of Mel(1b) was more prominent than Mel(1a) at all the time points during both the reproductive phases. The expression of AR was inversely related to both the melatonin and its receptor expression at 24h time scale during both the reproductive phases. Results also reflected a parallel relationship of melatonin, melatonin receptors and all the immune parameters (Total leukocyte count, Lymphocyte count, % stimulation ratio) suggesting that peripheral melatonin might be responsible for daily periodicity of LAIS. Presence of androgen receptors in lung led us to propose that gonadal steroid does influence the LAIS. Therefore melatonin along with testosterone might be acting as a temporal synchronizer for daily rhythms in lung associated immunity in Perdicula asiatica during different reproductive phases.
Authors:
R K Kharwar; C Haldar
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-2-11
Journal Detail:
Title:  Comparative biochemistry and physiology. Part A, Molecular & integrative physiology     Volume:  -     ISSN:  1531-4332     ISO Abbreviation:  -     Publication Date:  2011 Feb 
Date Detail:
Created Date:  2011-2-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9806096     Medline TA:  Comp Biochem Physiol A Mol Integr Physiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2010. Published by Elsevier Inc.
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