1
|
Serra M, Marongiu J, Simola N, Costa G. Emission of 50-kHz ultrasonic vocalizations stimulated by antiparkinsonian dopaminomimetic drugs in hemiparkinsonian rats is associated with neuronal activation in subcortical regions that regulate the affective state. Exp Neurol 2024; 381:114939. [PMID: 39191345 DOI: 10.1016/j.expneurol.2024.114939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 08/06/2024] [Accepted: 08/24/2024] [Indexed: 08/29/2024]
Abstract
Dopamine replacement therapy (DRT) of Parkinson's disease (PD) may trigger non-motor complications, some of which affect hedonic homeostatic regulation. Management of iatrogenic alterations in the affective state in PD is unsatisfactory, partly because of the limitations in the experimental models that are used in the preclinical investigation of the neurobiology and therapy of these alterations. In this connection, we recently employed a new experimental approach consisting in measuring the emission of 50-kHz ultrasonic vocalizations (USVs), a marker of positive affect, in hemiparkinsonian rats treated with drugs used in the DRT of PD. To further strengthen our approach, we here evaluated how the acute and repeated (× 5, on alternate days) administration of apomorphine (2 mg/kg, i.p.) or L-3,4-dihydroxyphenilalanine (L-DOPA, 12 mg/kg, i.p.) modified the immunoreactivity for Zif-268, a marker of neuronal activation, in the nucleus accumbens (NAc), caudate-putamen (CPu) and medial prefrontal cortex (mPFC), which are brain regions that regulate emotional states and drugs' affective properties. Acute and repeated treatment with either apomorphine or L-DOPA stimulated the emission of 50-kHz USVs in hemiparkinsonian rats, and this effect was paired with increased Zif-268 immunoreactivity in the NAc and CPu, but not mPFC. These findings indicate that subcortical and cortical regions may differently regulate the emission of 50-kHz USVs in hemiparkinsonian rats treated with dopaminergic drugs used in the DRT of PD. Moreover, they provide further evidence that measuring 50-kHz USV emissions in hemiparkinsonian rats may be a relevant approach to investigate at the preclinical level the affective properties of antiparkinsonian drugs.
Collapse
Affiliation(s)
- Marcello Serra
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Jacopo Marongiu
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Nicola Simola
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy.
| | - Giulia Costa
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| |
Collapse
|
2
|
Schwarting RKW. Behavioral analysis in laboratory rats: Challenges and usefulness of 50-kHz ultrasonic vocalizations. Neurosci Biobehav Rev 2023; 152:105260. [PMID: 37268181 DOI: 10.1016/j.neubiorev.2023.105260] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/04/2023]
Abstract
Many rodent species emit and detect vocalizations in the ultrasonic range. Rats use three classes of ultrasonic vocalizations depending on developmental stage, experience and the behavioral situation. Calls from one class emitted by juvenile and adult rats, the so-called 50-kHz calls, are typical for appetitive and social situations. This review provides a brief historical account on the introduction of 50-kHz calls in behavioral research followed by a survey of their scientific applications focusing on the last five years, where 50-kHz publications reached a climax. Then, specific methodological challenges will be addressed, like how to measure and report 50-kHz USV, the problem of assignment of acoustic signals to a specific sender in a social situation, and individual variability in call propensity. Finally, the intricacy of interpreting 50-kHz results will be discussed focusing on the most prevalent ones, namely as communicative signals and/or readouts of the sender's emotional status.
Collapse
Affiliation(s)
- Rainer K W Schwarting
- Experimental and Biological Psychology, Behavioral Neuroscience, Faculty of Psychology, Philipps-University of Marburg, Gutenbergstrasse 18, 35032 Marburg, Germany; Marburg Center for Mind, Brain, and Behavior (MCMBB), Hans-Meerwein-Strasse 6, 35032 Marburg, Germany.
| |
Collapse
|
3
|
Taracha E, Czarna M, Turzyńska D, Maciejak P. Amphetamine-induced prolonged disturbances in tissue levels of dopamine and serotonin in the rat brain. Pharmacol Rep 2023; 75:596-608. [PMID: 36944909 DOI: 10.1007/s43440-023-00472-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 03/23/2023]
Abstract
BACKGROUND A hallmark of psychostimulants is the persistence of neurobiological changes they produce. The difficulty in reversing long-time effects of psychostimulants use is why addiction therapy is so ineffective. This study aimed to look for such drug-induced changes that can be detected even after many weeks of abstinence. METHODS Rats were given 12 doses of amphetamine (Amph) at 1.5 mg/kg. The rewarding effect of Amph was assessed using ultrasonic vocalization. After 14 and 28 days of abstinence, tissue levels of dopamine (DA), serotonin (5-HT), and their metabolites were measured in the prefrontal cortex (PFC), nucleus accumbens (Acb), dorsomedial (CPuM), and dorsolateral (CPuL) striatum. RESULTS After 28 days of abstinence, DA levels were increased in the dorsal striatum while 5-HT levels were decreased in all brain regions studied. The opposite direction of changes in DA and 5-HT tissue levels observed in the dorsal striatum may be related to the changes in the emotional state during abstinence and may contribute to the incubation of craving and relapses. Tissue levels of 5-HT and DA showed intra- and inter-structural correlations, most pronounced after 14 days of abstinence. Most of them were absent in the control group (ctrl), which may indicate that their appearance was related to the changes induced by earlier Amph administration. We did not find any associations between reward sensitivity and the persistence of Amph-induced neurochemical disturbances. CONCLUSIONS Administration of 12 moderate doses of Amph causes prolonged changes in DA and 5-HT tissue levels. The direction and severity of the changes are dependent on the brain region and the neurotransmitter studied.
Collapse
Affiliation(s)
- Ewa Taracha
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego St., 02-957, Warsaw, Poland.
| | - Magdalena Czarna
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego St., 02-957, Warsaw, Poland
- Department of Experimental Oncology and Preclinical Research, The Maria Sklodowska-Curie National Research Institute of Oncology, 5 Wilhelma Roentgena St., 02-781, Warsaw, Poland
| | - Danuta Turzyńska
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego St., 02-957, Warsaw, Poland
| | - Piotr Maciejak
- Department of Neurochemistry, Institute of Psychiatry and Neurology, 9 Sobieskiego St., 02-957, Warsaw, Poland
- Department of Experimental and Clinical Pharmacology, Centre for Preclinical Research and Technology, Medical University of Warsaw, 1B Banacha St., 02-097, Warsaw, Poland
| |
Collapse
|
4
|
Kim S, Jang EY, Song SH, Kim JS, Ryu IS, Jeong CH, Lee S. Brain Microdialysis Coupled to LC-MS/MS Revealed That CVT-10216, a Selective Inhibitor of Aldehyde Dehydrogenase 2, Alters the Neurochemical and Behavioral Effects of Methamphetamine. ACS Chem Neurosci 2021; 12:1552-1562. [PMID: 33871963 DOI: 10.1021/acschemneuro.1c00039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Methamphetamine (MA), a potent central nervous system stimulant, mainly affects the brain dopaminergic and serotoninergic systems. Monoamine oxidase, catechol-O-methyltransferase, and aldehyde dehydrogenase 2 (ALDH2) are important enzymes in the metabolism of dopamine (DA) and serotonin (5-HT); however, the role of ALDH2 in MA addiction remains unclear. This study focused on the real-time changes in DA, 5-HT, and their metabolites, including 3,4-dihydroxyphenylacetic aldehyde and salsolinol, which are metabolites directly related to ALDH2, to examine the effects of the inhibition of ALDH2 on hyperlocomotion induced by MA. Locomotor activity was evaluated in rats after administration of MA and/or CVT-10216 (a selective ALDH2 inhibitor). Moreover, the simultaneous quantification of DA, 5-HT, and their metabolites in brain microdialysates of the rats was performed using a derivatization-assisted LC-MS/MS method after full validation. The validation results proved the method to be selective, sensitive, accurate, and precise, with acceptable linearity within calibration ranges. Intraperitoneal (i.p.) administration of 10 or 20 mg/kg of CVT-10216 significantly decreased MA-induced hyperlocomotion (1 mg/kg, i.p.). The analytical results of rat brain microdialysates demonstrated that the administration of CVT-10216 significantly downregulated DA levels, which were increased upon exposure to MA. Moreover, the increase in 3-methoxytyramine levels following coadministration of CVT-10216 and MA could play a potential role in antagonizing the hyperlocomotion induced by MA. All of these findings suggest that the inhibition of ALDH2 protects against MA-induced hyperlocomotion and has therapeutic potential in MA addiction.
Collapse
Affiliation(s)
- Seungju Kim
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-gu, Daegu 704-701, Republic of Korea
| | - Eun Young Jang
- Pharmacology and Drug Abuse Research Group, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daegeon 34114, Republic of Korea
| | - Sang-Hoon Song
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-gu, Daegu 704-701, Republic of Korea
| | - Ji Sun Kim
- Pharmacology and Drug Abuse Research Group, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daegeon 34114, Republic of Korea
| | - In Soo Ryu
- Pharmacology and Drug Abuse Research Group, Korea Institute of Toxicology, 141 Gajeong-ro, Yuseong-gu, Daegeon 34114, Republic of Korea
| | - Chul-Ho Jeong
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-gu, Daegu 704-701, Republic of Korea
| | - Sooyeun Lee
- College of Pharmacy, Keimyung University, 1095 Dalgubeoldaero, Dalseo-gu, Daegu 704-701, Republic of Korea
| |
Collapse
|