2004
Sensitization and cannabinoid cross-sensitization to methamphetamine antiaggressive effects is not developed in morphine treatment design in mice
ŠULCOVÁ, Alexandra, Leoš LANDA a Karel ŠLAISZákladní údaje
Originální název
Sensitization and cannabinoid cross-sensitization to methamphetamine antiaggressive effects is not developed in morphine treatment design in mice
Název česky
SEnsitizace a krossensitizace kanabinoidem k inhibičnímu účinku metamfetaminu na agresivitu myší se nevzniká v řpípadě aplikace morfinu
Autoři
ŠULCOVÁ, Alexandra (203 Česká republika, garant), Leoš LANDA (203 Česká republika) a Karel ŠLAIS (203 Česká republika)
Vydání
Fundamental & Clinical Pharmacology, UK, Blackwll Publishing, 2004, 1744-3377
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
30104 Pharmacology and pharmacy
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Kód RIV
RIV/00216224:14110/04:00010246
Organizační jednotka
Lékařská fakulta
UT WoS
000208663600308
Klíčová slova anglicky
cannabinoid; methamphetamine; morphine; sensitization
Štítky
Změněno: 2. 9. 2004 13:59, prof. MUDr. Alexandra Šulcová, CSc.
V originále
Repeated drug administration leading to a progressively enhanced response, a phenomenon termed sensitization, may be involved in the development and maintenance of drug addiction and also relapse to drug-taking behaviour in weaned addicts. There also is data available showing a cross-sensitization between different types of drugs of abuse. The present study observed behavioural sensitization to the psychostimulant methamphetamine (MET), the opioid morphine (MO) and cross-sensitization with cannabinoid methanandamide (CA) to both of them in mice. The model of agonistic behaviour in singly-housed male mice on paired interactions with non-aggressive group-housed partners was used to analyze behavioural changes in 15 acts of 4 categories: sociable, timid, aggressive and locomotor. Both MET and MO produce dose-dependent antiaggressive effects in singly-housed mice; MET increased while MO decreased locomotor activities. The sensitization to these effects of MET was clearly demonstrated when after the pre-treatment with 5 daily MET doses the challenge dose was given 5 days later, was suppressed by pretreatment with MET+cannabinoid antagonist AM 251, and cross-sensitization was present after the pretreatment with CA. In the same experimental design neither sensitization nor CA cross-sensitization to the antiaggressive efficacy of MO was registered. These results suggest an interaction between the endocannabinoid system and methamphetamine brain mechanisms, and support further the hypothesis that repeated use of cannabis may facilitate progression to the consumption of psychostimulants. The parallel was not confirmed with morphine.
Česky
Výsledky studie podporují údaje o funkční interakci mezi endokanabinoidním systémem a farmakologickými mechanismy účinku metamfetaminu. Paralela nebyla potvrzena u morfinu.