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involvement of NO in LF magnetic field induced obsessive compulsive disorder-like behavior    
Ga naar overzicht berichten in: Onderzoeken

involvement of NO in LF magnetic field induced obsessive compulsive disorder-like behavior
zaterdag, 03 mei 2014 - Dossier: Algemeen


Bron: www.ncbi.nlm.nih.gov/pubmed/24780504?dopt=Abstract .
26 april 2014


Pharmacol Biochem Behav. 2014 Apr 26. pii: S0091-3057(14)00115-4. doi: 10.1016/j.pbb.2014.04.007. (Epub ahead of print

Experimental evidence for involvement of nitric oxide in low frequency magnetic field induced obsessive compulsive disorder-like behavior.

Salunke BP1, Umathe SN2, Chavan JG2.

1Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Mahatma Jyotiba Fuley Shaikshanik Parisar, Amravati Road, Nagpur (MS), India-440 033. Electronic address: balwantsalunke@yahoo.com.
2Department of Pharmaceutical Sciences, Rashtrasant Tukadoji Maharaj Nagpur University, Mahatma Jyotiba Fuley Shaikshanik Parisar, Amravati Road, Nagpur (MS), India-440 033.

Abstract
It is well documented that extremely low frequency magnetic field (ELF MF) produced effects on the function of nervous system in humans and laboratory animals. Dopaminergic and serotonergic pathways have been implicated in obsessive compulsive disorder (OCD). Recently involvement of nitric oxide (NO) in OCD-like behavior is suggested. Hence, the present study was carried out to understand the involvement of dopamine, serotonin and NO in ELF MF induced OCD-like behavior. Swiss albino mice were exposed to ELF MF (50Hz, 10G) for 8h/day for 7, 30, 60, 90 and 120days by subjecting them to Helmholtz coils. OCD-like behavior was assessed in terms of marble burying behavior (MBB) test. Results revealed that ELF MF induced time dependant MBB, on 7th, 30th, 60th, 90th, and 120th exposure day. Further, levels of dopamine, serotonin and NO after 120days of ELF MF exposure were determined in regions of the brain. The neurohumoral studies revealed that exposure to ELF MF increased NO levels in cortex, hippocampus and hypothalamus, and levels of dopamine and serotonin remain unaffected. As OCD-like behavior after ELF MF exposure was associated with higher levels of NO with no significant change in serotonin and dopamine, the effect of such exposure was studied in groups concurrently treated with NO modulators, NO precursor, L-ARG (400mg/kg) or NOS inhibitor, L-NAME (15.0mg/kg) or 7-NI (10.0mg/kg). These treatments revealed that NO precursor exacerbated and NOS inhibitors attenuated ELF MF induced OCD-like behavior with corresponding changes in the levels of NO.

Copyright © 2014. Published by Elsevier Inc.
KEYWORDS:
Dopamine, Extremely low frequency magnetic field, Marble burying behavior, Nitric oxide, Obsessive compulsive disorder, Serotonin


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