Effects of low doses of caffeine on aggressive behavior of male rats
To date, the effect of low doses of caffeine on aggression has not been systematically examined. Doses of caffeine greater than 30 mg/kg appear to reduce social interaction and aggression in all species studied. In a double blind study of the effects of low doses of caffeine on aggression, rats were...
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| Veröffentlicht in: | Psychological reports 2000-06, Vol.86 (3 Pt 1), p.941-946 |
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| container_title | Psychological reports |
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| creator | Wilson, J F Nugent, N R Baltes, J E Tokunaga, S Canic, T Young, B W Bellinger, E R Delac, D T Golston, G A Hendershot, D M |
| description | To date, the effect of low doses of caffeine on aggression has not been systematically examined. Doses of caffeine greater than 30 mg/kg appear to reduce social interaction and aggression in all species studied. In a double blind study of the effects of low doses of caffeine on aggression, rats were housed four per cage, and aggressive behavior against an intruder was recorded during baseline and following administration of 2.5, 5, 10, and 20 mg/kg caffeine. Aggressive behavior was significantly increased following administration of the higher doses of caffeine. Doses of 5, 10, and 20 mg/kg caffeine all were effective in increasing pushing behavior, whereas doses of 5 and 10 mg/kg were most effective in increasing boxing behavior, and a dose of 10 mg/kg was significantly more effective than other doses in increasing chasing and roll-tumble-bite behaviors. Based on these results and other published reports, the inverted-U shaped dose-dependent effect of caffeine on aggression appears to apply, with aggressive behavior being most elevated following doses of 5-20 mg/kg caffeine, less elevated following 2.5 mg/kg or 30 mg/kg, and significantly reduced with doses above 40 mg/kg and at doses below 2.5 mg/kg. |
| doi_str_mv | 10.2466/PR0.86.3.941-946 |
| format | Article |
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Doses of caffeine greater than 30 mg/kg appear to reduce social interaction and aggression in all species studied. In a double blind study of the effects of low doses of caffeine on aggression, rats were housed four per cage, and aggressive behavior against an intruder was recorded during baseline and following administration of 2.5, 5, 10, and 20 mg/kg caffeine. Aggressive behavior was significantly increased following administration of the higher doses of caffeine. Doses of 5, 10, and 20 mg/kg caffeine all were effective in increasing pushing behavior, whereas doses of 5 and 10 mg/kg were most effective in increasing boxing behavior, and a dose of 10 mg/kg was significantly more effective than other doses in increasing chasing and roll-tumble-bite behaviors. Based on these results and other published reports, the inverted-U shaped dose-dependent effect of caffeine on aggression appears to apply, with aggressive behavior being most elevated following doses of 5-20 mg/kg caffeine, less elevated following 2.5 mg/kg or 30 mg/kg, and significantly reduced with doses above 40 mg/kg and at doses below 2.5 mg/kg.</description><identifier>ISSN: 0033-2941</identifier><identifier>EISSN: 1558-691X</identifier><identifier>DOI: 10.2466/PR0.86.3.941-946</identifier><identifier>PMID: 10876350</identifier><language>eng</language><publisher>United States: Psychological reports</publisher><subject>Aggression - drug effects ; Agonistic Behavior - drug effects ; Animals ; Arousal - drug effects ; Caffeine - pharmacology ; Dose-Response Relationship, Drug ; Humans ; Male ; Rats ; Rats, Sprague-Dawley</subject><ispartof>Psychological reports, 2000-06, Vol.86 (3 Pt 1), p.941-946</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c214t-9190e57094d954e5a3b6d86f7ae04fd4e077a1ca7065182fc55bb5a48ff9d8013</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,27846,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/10876350$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wilson, J F</creatorcontrib><creatorcontrib>Nugent, N R</creatorcontrib><creatorcontrib>Baltes, J E</creatorcontrib><creatorcontrib>Tokunaga, S</creatorcontrib><creatorcontrib>Canic, T</creatorcontrib><creatorcontrib>Young, B W</creatorcontrib><creatorcontrib>Bellinger, E R</creatorcontrib><creatorcontrib>Delac, D T</creatorcontrib><creatorcontrib>Golston, G A</creatorcontrib><creatorcontrib>Hendershot, D M</creatorcontrib><title>Effects of low doses of caffeine on aggressive behavior of male rats</title><title>Psychological reports</title><addtitle>Psychol Rep</addtitle><description>To date, the effect of low doses of caffeine on aggression has not been systematically examined. Doses of caffeine greater than 30 mg/kg appear to reduce social interaction and aggression in all species studied. In a double blind study of the effects of low doses of caffeine on aggression, rats were housed four per cage, and aggressive behavior against an intruder was recorded during baseline and following administration of 2.5, 5, 10, and 20 mg/kg caffeine. Aggressive behavior was significantly increased following administration of the higher doses of caffeine. Doses of 5, 10, and 20 mg/kg caffeine all were effective in increasing pushing behavior, whereas doses of 5 and 10 mg/kg were most effective in increasing boxing behavior, and a dose of 10 mg/kg was significantly more effective than other doses in increasing chasing and roll-tumble-bite behaviors. Based on these results and other published reports, the inverted-U shaped dose-dependent effect of caffeine on aggression appears to apply, with aggressive behavior being most elevated following doses of 5-20 mg/kg caffeine, less elevated following 2.5 mg/kg or 30 mg/kg, and significantly reduced with doses above 40 mg/kg and at doses below 2.5 mg/kg.</description><subject>Aggression - drug effects</subject><subject>Agonistic Behavior - drug effects</subject><subject>Animals</subject><subject>Arousal - drug effects</subject><subject>Caffeine - pharmacology</subject><subject>Dose-Response Relationship, Drug</subject><subject>Humans</subject><subject>Male</subject><subject>Rats</subject><subject>Rats, Sprague-Dawley</subject><issn>0033-2941</issn><issn>1558-691X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2000</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>K30</sourceid><recordid>eNpd0E1Lw0AQBuBFFFurd08SELwlzma_j1LrBwiKKHgLm2S2piTZmk0q_ntTrRdPw8v7MAxDyCmFJOVSXj49Q6JlwhLDaWy43CNTKoSOpaFv-2QKwFicjt2EHIWwGiMFpg7JhIJWkgmYkuuFc1j0IfIuqv1nVPqAP6GwY1G1GPk2sstlhyFUG4xyfLebyndb0tgao8724ZgcOFsHPNnNGXm9WbzM7-KHx9v7-dVDXKSU97GhBlAoMLw0gqOwLJellk5ZBO5KjqCUpYVVIAXVqSuEyHNhuXbOlBoom5GL373rzn8MGPqsqUKBdW1b9EPIFE3TVMotPP8HV37o2vG2jGoOIBhXZlRnOzXkDZbZuqsa231lf99h3wXuZO0</recordid><startdate>200006</startdate><enddate>200006</enddate><creator>Wilson, J F</creator><creator>Nugent, N R</creator><creator>Baltes, J E</creator><creator>Tokunaga, S</creator><creator>Canic, T</creator><creator>Young, B W</creator><creator>Bellinger, E R</creator><creator>Delac, D T</creator><creator>Golston, G A</creator><creator>Hendershot, D M</creator><general>Psychological reports</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>IOIBA</scope><scope>K30</scope><scope>PAAUG</scope><scope>PAWHS</scope><scope>PAWZZ</scope><scope>PAXOH</scope><scope>PBHAV</scope><scope>PBQSW</scope><scope>PBYQZ</scope><scope>PCIWU</scope><scope>PCMID</scope><scope>PCZJX</scope><scope>PDGRG</scope><scope>PDWWI</scope><scope>PETMR</scope><scope>PFVGT</scope><scope>PGXDX</scope><scope>PIHIL</scope><scope>PISVA</scope><scope>PJCTQ</scope><scope>PJTMS</scope><scope>PLCHJ</scope><scope>PMHAD</scope><scope>PNQDJ</scope><scope>POUND</scope><scope>PPLAD</scope><scope>PQAPC</scope><scope>PQCAN</scope><scope>PQCMW</scope><scope>PQEME</scope><scope>PQHKH</scope><scope>PQMID</scope><scope>PQNCT</scope><scope>PQNET</scope><scope>PQSCT</scope><scope>PQSET</scope><scope>PSVJG</scope><scope>PVMQY</scope><scope>PZGFC</scope><scope>7X8</scope></search><sort><creationdate>200006</creationdate><title>Effects of low doses of caffeine on aggressive behavior of male rats</title><author>Wilson, J F ; Nugent, N R ; Baltes, J E ; Tokunaga, S ; Canic, T ; Young, B W ; Bellinger, E R ; Delac, D T ; Golston, G A ; Hendershot, D M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c214t-9190e57094d954e5a3b6d86f7ae04fd4e077a1ca7065182fc55bb5a48ff9d8013</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2000</creationdate><topic>Aggression - 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Doses of caffeine greater than 30 mg/kg appear to reduce social interaction and aggression in all species studied. In a double blind study of the effects of low doses of caffeine on aggression, rats were housed four per cage, and aggressive behavior against an intruder was recorded during baseline and following administration of 2.5, 5, 10, and 20 mg/kg caffeine. Aggressive behavior was significantly increased following administration of the higher doses of caffeine. Doses of 5, 10, and 20 mg/kg caffeine all were effective in increasing pushing behavior, whereas doses of 5 and 10 mg/kg were most effective in increasing boxing behavior, and a dose of 10 mg/kg was significantly more effective than other doses in increasing chasing and roll-tumble-bite behaviors. Based on these results and other published reports, the inverted-U shaped dose-dependent effect of caffeine on aggression appears to apply, with aggressive behavior being most elevated following doses of 5-20 mg/kg caffeine, less elevated following 2.5 mg/kg or 30 mg/kg, and significantly reduced with doses above 40 mg/kg and at doses below 2.5 mg/kg.</abstract><cop>United States</cop><pub>Psychological reports</pub><pmid>10876350</pmid><doi>10.2466/PR0.86.3.941-946</doi><tpages>6</tpages></addata></record> |
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| source | MEDLINE; SAGE Journals; Periodicals Index Online |
| subjects | Aggression - drug effects Agonistic Behavior - drug effects Animals Arousal - drug effects Caffeine - pharmacology Dose-Response Relationship, Drug Humans Male Rats Rats, Sprague-Dawley |
| title | Effects of low doses of caffeine on aggressive behavior of male rats |
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