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  • 1
    Electronic Resource
    Electronic Resource
    Head-twitch response induced by tyramine (1980)
    Springer
    Psychopharmacology 67 (1980), S. 53-59 
    Details
    ISSN: 1432-2072
    Keywords: Head-twitches ; Tyramine ; Serotonin ; Safrazine ; 6-Hydroxydopamine ; 5,6-Dihydroxytryptamine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The intracerebroventricular (IC) administration of tyramine (TyA) induced a characteristic head-twitch response in mice pretreated with safrazine, a monoamine oxidase inhibitor. Safrazine-pretreated mice exhibited similar head-twitches following the IC treatment of serotonin (5-HT). The maximum dose of 5-HT which did not elicit head-twitches significantly potentiated TyA-induced head-twitches. Antiserotonergic drugs such as morphine and dimethothiazine antagonized TyA-induced head-twitches. A serotonergic denervator, 5,6-dihydroxytryptamine, potentiated head-twitch induced by TyA or 5-HT. Both TyA-induced and 5-HT-induced head-twitches were inhibited by dopamine and noradrenaline, while catecholaminergic denervators such as reserpine and 6-hydroxydopamine, and diethyldithiocarbamic acid, a dopamine-β-hydroxylase inhibitor, increased the TyA response. These results indicate that head-twitches induced by TyA may be mediated via the serotonergic system and may inhibit the catecholaminergic system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00427595
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Antinociceptive effects of neonatal capsaicin in rats with adjuvant arthritis (1984)
    Springer
    Naunyn-Schmiedeberg's archives of pharmacology 326 (1984), S. 248-253 
    Details
    ISSN: 1432-1912
    Keywords: Neonatal capsaicin ; Antinociceptive effects ; Adjuvant arthritis ; Substance P ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Rats were treated with capsaicin (50 mg/kg, SC) either on the second day or on the second and third days of life. A significant attenuation of the responses to noxious stimuli was obtained in the capsaicin treated animals as measured by the hot-plate or paw pressure tests but not by the tail-flick test. Furthermore, neonatal capsaicin produced a significant reduction of response in the formalin test. Capsaicin reduced the reaction latency in rats with adjuvant arthritis as measured by the hot-plate and paw pressure tests, though capsaicin did not alter the overall time course of the response to Freund's adjuvant. Capsaicin also attenuated the weight loss or the decreased ambulatory and rearing behaviour which occurred in the control animals with adjuvant arthritis. It is suggested that neonatal treatment with capsaicin may relieve the responsiveness to longlasting nociceptive stimuli by adjuvant in rats.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00505326
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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