Linked Life Data

17375557

Source:http://linkedlifedata.com/resource/pubmed/id/17375557

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2007-3-22
pubmed:abstractText
An important goal of current neuroleptic research is to develop antipsychotic compounds with the low incidence of extrapyramidal side effects. The therapeutic success and less side-effect of atypical anti-psychotics such as clozapine and risperidone has focused the attention on the role of receptor systems other than dopaminergic system in the pathophysiology of neuroleptics-associated extrapyramidal side effects. The present study compares the effect of chronic administration of typical and atypical antipsychotics on neurochemical profile in rat forebrain. The study was planned to study changes in extracellular levels of norepinephrine, dopamine and serotonin in forebrain region of brain and tried to correlate them with hyperkinetic motor activities (vacuous chewing movements (VCM's), tongue protrusions and facial jerking) in rats, hall mark of chronic extrapyramidal side-effect of neuroleptic therapy tardive dyskinesia. Chronic administration of haloperidol (1 mg/kg) and chlorpromazine (5 mg/kg) resulted in significant increase in orofacial hyperkinetic movements where as clozapine and risperidone showed less significant increase in orofacial hyperkinetic movements as compared to control. There were also significant decrease in the extracellular levels of neurotransmitters dopamine, norepinephrine and serotonin in fore-brain as measured by HPLC/ED after chronic administration of haloperidol and chlorpromazine. Chronic administration of atypical neuroleptics clozapine and risperidone resulted in the decrease in extracellular concentration of dopamine and norepinephrine but the effect was less significant as compared to typical drugs. However, treatment with atypical neuroleptics resulted in 3 fold increase in serotonin levels as compared to forebrain of control rats. Typical and atypical neuroleptics showed varying effects on neurotransmitters, especially serotonin which may account for the difference in their profile of side effects (Tardive dyskinesia).
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0019-5189
pubmed:author
pubmed:issnType
Print
pubmed:volume
45
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
175-9
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Comparative neurochemical changes associated with chronic administration of typical and atypical neuroleptics: implications in tardive dyskinesia.
pubmed:affiliation
Centre with Potential for Excellence in Biomedical Sciences, Panjab University, Chandigarh 160 014, India.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't