|
1
|
Saldanha TCS, Sanchez WN, Palombo P, Cruz FC, Galduróz JCF, Schwarting RKW, Andreatini R, da Cunha C, Pochapski JA. Biperiden reverses the increase in 50-kHz ultrasonic vocalizations but not the increase in locomotor activity induced by cocaine. Behav Brain Res 2024; 461:114841. [PMID: 38159887 PMCID: PMC10903531 DOI: 10.1016/j.bbr.2023.114841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/14/2023] [Accepted: 12/27/2023] [Indexed: 01/03/2024]
Abstract
Cocaine use disorder (CUD) is a worldwide public health problem, associated with severe psychosocial and economic impacts. Currently, no FDA-approved treatment is available for CUD. However, an emerging body of evidence from clinical and preclinical studies suggests that biperiden, an M1 muscarinic receptor antagonist, presents potential therapeutic use for CUD. These studies have suggested that biperiden may reduce the reinforcing effects of cocaine. It is well established that rodents emit 50-kHz ultrasonic vocalizations (USV) in response to natural rewards and stimulant drugs, including cocaine. Nonetheless, the effects of biperiden on the cocaine-induced increase of 50-kHz USV remains unknown. Here, we hypothesized that biperiden could antagonize the acute effects of cocaine administration on rat 50-kHz USV. To test this hypothesis, adult male Wistar rats were divided into four experimental groups: saline, 5 mg/kg biperiden, 10 mg/kg cocaine, and biperiden/cocaine (5 and 10 mg/kg, i.p., respectively). USV and locomotor activity were recorded in baseline and test sessions. As expected, cocaine administration significantly increased the number of 50-kHz USV. Biperiden administration effectively antagonized the increase in 50-kHz USV induced by cocaine. Cocaine administration also increased the emission of trill and mixed 50 kHz USV subtypes and this effect was antagonized by biperiden. Additionally, we showed that biperiden did not affect the cocaine-induced increase in locomotor activity, although biperiden administration per se increased locomotor activity. In conclusion, our findings indicate that administering biperiden acutely reduces the positive affective effects of cocaine, as demonstrated by its ability to inhibit the increase in 50-kHz USV.
Collapse
Affiliation(s)
- Thais C S Saldanha
- Laboratório de Fisiologia e Farmacologia do Sistema Nervoso Central, Department of Pharmacology, Universidade Federal do Paraná, Curitiba, Brazil
| | - William N Sanchez
- Integrative Neurobiology Section, Molecular Targets and Medications Discovery Branch, National Institute on Drug Abuse, Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | - Paola Palombo
- Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Fábio C Cruz
- Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Rainer K W Schwarting
- Behavioral Neuroscience, Experimental and Biological Psychology, Faculty of Psychology, Marburg Center for Mind, Brain and Behavior (MCMBB), Philipps-University Marburg, 35032 Marburg, Germany
| | - Roberto Andreatini
- Laboratório de Fisiologia e Farmacologia do Sistema Nervoso Central, Department of Pharmacology, Universidade Federal do Paraná, Curitiba, Brazil
| | - Claudio da Cunha
- Laboratório de Fisiologia e Farmacologia do Sistema Nervoso Central, Department of Pharmacology, Universidade Federal do Paraná, Curitiba, Brazil; Department of Biochemistry, Universidade Federal do Paraná, Curitiba, Brazil
| | - José Augusto Pochapski
- Laboratório de Fisiologia e Farmacologia do Sistema Nervoso Central, Department of Pharmacology, Universidade Federal do Paraná, Curitiba, Brazil; Department of Biochemistry, Universidade Federal do Paraná, Curitiba, Brazil.
| |
Collapse
|