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Neural responses to antigenic challenges and immunomodulatory factors.
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MedLine Citation:
PMID:  2399739     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In studies designed to examine the effects of the immune system, recordings of multi-unit electrical activity (MUA) in the central nervous system were made in the preoptic area/anterior hypothalamus (POA/AH) and paraventricular nucleus (PVN) of rats, following sheep red blood cell (SRBC) immunization. Peak increases in POA/AH MUA were observed on the fifth day following SRBC sensitization, the day on which serum antibodies were first detected. A significant increase in paraventricular nucleus (PVN) MUA was also observed on the sixth day. These changes in POA/AH and PVN MUA were found to be associated with increased plasma corticosterone levels on day 8. Induction of a second immune response to SRBC evoked a POA/AH MUA increase of extended duration but reduced amplitude, while administration of the immunosuppressive drug, cyclophosphamide, prevented both antibody generation and any increases in POA/AH MUA. These data suggest that activation of the immune system may provide signals, in the form of chemical messengers, which are able to alter neural activity in some regions of the brain that are important in neuroendocrine regulatory mechanisms. Accordingly, intracerebroventricular injections of thymic humoral factor or alpha-interferon decreased POA/AH MUA, increased EEG synchronization, and decreased plasma levels of corticosterone. Histamine and interleukin 1 did not alter POA/AH MUA but decreased EEG synchronization and increased plasma levels of corticosterone.
Authors:
D Saphier; H Ovadia; O Abramsky
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Yale journal of biology and medicine     Volume:  63     ISSN:  0044-0086     ISO Abbreviation:  Yale J Biol Med     Publication Date:    1990 Mar-Apr
Date Detail:
Created Date:  1990-10-16     Completed Date:  1990-10-16     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0417414     Medline TA:  Yale J Biol Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  109-19     Citation Subset:  IM    
Affiliation:
Department of Neurology, Hadassah University Hospital, Jerusalem, Israel.
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MeSH Terms
Descriptor/Qualifier:
Animals
Antigens / immunology*
Corticosterone / blood
Cyclophosphamide / pharmacology
Electroencephalography
Erythrocytes / immunology
Feedback
Histamine / pharmacology
Hypothalamus / physiology*
Interferon Type I / pharmacology
Interleukin-1 / pharmacology
Male
Neuroimmunomodulation*
Paraventricular Hypothalamic Nucleus / physiology
Preoptic Area / physiology
Rats
Thymus Hormones / pharmacology
Chemical
Reg. No./Substance:
0/Antigens; 0/Interferon Type I; 0/Interleukin-1; 0/Thymus Hormones; 50-18-0/Cyclophosphamide; 50-22-6/Corticosterone; 51-45-6/Histamine; 63340-72-7/thymic humoral factor
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Full Text
Journal Information
Journal ID (nlm-ta): Yale J Biol Med
Journal ID (pmc): yjbm
ISSN: 0044-0086
ISSN: 1551-4056
Publisher: Yale Journal of Biology and Medicine
Article Information
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Print publication date: Season: Mar?Apr Year: 1990
Volume: 63 Issue: 2
First Page: 109 Last Page: 119
ID: 2589313
PubMed Id: 2399739

Neural responses to antigenic challenges and immunomodulatory factors.
D. Saphier
H. Ovadia
O. Abramsky
Department of Neurology, Hadassah University Hospital, Jerusalem, Israel.



Article Categories:
  • Research Article


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