Journal article
Cardiovascular mediation of clonidine-induced ultrasound production in infant rats
Behavioral neuroscience, Vol.114(3), pp.602-608
2000
DOI: 10.1037//0735-7044.114.3.602
PMID: 10883810
Abstract
In infant rats, administration of the alpha2 adrenoceptor agonist clonidine simultaneously evokes ultrasound production and bradycardia. In this study the authors examined in 8-day-old rats whether these 2 responses to clonidine are causally related. In Experiment 1 pups were pretreated with saline or prenalterol (0.1 or 1.0 mg/kg), a beta1 adrenoceptor agonist that increases cardiac rate, followed by administration of clonidine (1.0 mg/kg). Prenalterol pretreatment suppressed clonidine-induced ultrasound production at both doses. Prenalterol also increased skin temperature, however, suggesting that suppression of ultrasound was modulated in part by increased body temperature. Consistent with this suggestion, in Experiment 2 mild hyperthermia significantly inhibited clonidine-induced ultrasound production. Finally, in Experiment 3 the authors found that the pretreatments used in Experiments 1 and 2 prevent or dampen the effects of clonidine on cardiac rate. These results suggest that clonidine's effect on ultrasound production is mediated by its effects on the cardiovascular system.
Details
- Title: Subtitle
- Cardiovascular mediation of clonidine-induced ultrasound production in infant rats
- Creators
- Mark S BlumbergLisa A KreberGreta SokoloffKristen J Kent
- Resource Type
- Journal article
- Publication Details
- Behavioral neuroscience, Vol.114(3), pp.602-608
- DOI
- 10.1037//0735-7044.114.3.602
- PMID
- 10883810
- NLM abbreviation
- Behav Neurosci
- ISSN
- 0735-7044
- eISSN
- 1939-0084
- Language
- English
- Date published
- 2000
- Academic Unit
- Psychological and Brain Sciences; Iowa Neuroscience Institute; Biology
- Record Identifier
- 9984001100502771
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