Olfactory bulbectomy increases reinstatement of methamphetamine seeking after a forced abstinence in rats
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't, Validation Study
PubMed
26431766
DOI
10.1016/j.bbr.2015.09.035
PII: S0166-4328(15)30207-2
Knihovny.cz E-resources
- Keywords
- Sprague-Dawley rats, depression, methamphetamine, olfactory bulbectomy, reinstatement, self-administration,
- MeSH
- Self Administration MeSH
- Olfactory Bulb physiopathology surgery MeSH
- Drug-Seeking Behavior physiology MeSH
- Depressive Disorder complications physiopathology MeSH
- Administration, Intravenous MeSH
- Methamphetamine administration & dosage MeSH
- Disease Models, Animal MeSH
- Random Allocation MeSH
- Conditioning, Operant drug effects physiology MeSH
- Amphetamine-Related Disorders complications physiopathology MeSH
- Rats, Sprague-Dawley MeSH
- Recurrence MeSH
- Central Nervous System Stimulants administration & dosage MeSH
- Catheters, Indwelling MeSH
- Animals MeSH
- Check Tag
- Male MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Validation Study MeSH
- Names of Substances
- Methamphetamine MeSH
- Central Nervous System Stimulants MeSH
Drug addiction is commonly associated with depression and comorbid patients also suffer from higher cravings and increased relapse rate. To address this issue preclinically we combined the olfactory bulbectomy (OBX) model of depression and intravenous methamphetamine self-administration procedure in rats to assess differences in relapse-like behavior. Male Sprague-Dawley rats were divided randomly into two groups; in one group the bilateral olfactory bulbectomy (OBX) was performed while the other group was sham operated. After recovery, intracardiac catheter was implanted. Intravenous self-administration procedure was conducted in operant boxes using nose-poke operandi (Coulbourn Instruments, Inc., USA) under fixed ratio 1 schedule of reinforcement. Methamphetamine was available at dose 0.08 mg/kg/infusion. After stable methamphetamine intake was maintained, a period of forced abstinence was initiated and rats were kept in their home-cages for 14 days. Finally, one reinstatement session was conducted in operant boxes with no drug delivery. In the reinstatement session the mean of 138.4 active nose-pokes was performed by the OBX group, while the sham group displayed 41 responses, i.e. 140 % and 48 % of basal nose-poking during maintenance phase in OBX and sham operated group respectively. OBX group also showed significantly more passive nose-pokes indicating hyperactive behavioral traits in bulbectomized rats. However, the % of active operandum preference was equal in both groups. Olfactory bulbectomy model significantly increased reinstatement of methamphetamine seeking behavior. This paradigm can be used to evaluate potential drugs that are able to suppress the drug-seeking behavior.
References provided by Crossref.org
The effect of CNQX on self-administration: present in nicotine, absent in methamphetamine model
