Abstract:
:Systemic administration of apomorphine, angiotensin II, neurotensin and leucine-enkephalin induces emesis in dogs in a dose-dependent fashion. Receptors for Leu-enkephalin and angiotensin II but not apomorphine show receptor desensitization, such that a second systemic administration 5 min after the first is ineffective. Domperidone blocked the emetic response to apomorphine but not to Leu-enkephalin or angiotensin II. Naloxone selectively blocked the Leu-enkephalin response, while saralasin blocked responses to both angiotensin II and Leu-enkephalin, but not apomorphine. Chlorpromazine prevented the emetic response to all agents, suggesting a dopamine receptor in the emetic pathway on the brain side of the blood-brain barrier. In dogs with ablation of the area postrema the emetic response to apomorphine and all peptides was prevented.
journal_name
Behav Brain Resjournal_title
Behavioural brain researchauthors
Carpenter DO,Briggs DB,Strominger Ndoi
10.1016/0166-4328(84)90220-1subject
Has Abstractpub_date
1984-03-01 00:00:00pages
277-81issue
3eissn
0166-4328issn
1872-7549pii
0166-4328(84)90220-1journal_volume
11pub_type
杂志文章abstract:INTRODUCTION:Several human studies have reported that coffee consumption improves cognitive performance. In the present study, we investigated whether instant decaffeinated coffee also ameliorates cognitive performance and attenuates the detrimental effects of scopolamine on memory. METHODS:Memory performance was eval...
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journal_title:Behavioural brain research
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journal_title:Behavioural brain research
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journal_title:Behavioural brain research
pub_type: 杂志文章
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journal_title:Behavioural brain research
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journal_title:Behavioural brain research
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journal_title:Behavioural brain research
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journal_title:Behavioural brain research
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journal_title:Behavioural brain research
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journal_title:Behavioural brain research
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