1
|
Everett AC, Graul BE, Ronström JW, Robinson JK, Watts DB, España RA, Siciliano CA, Yorgason JT. Effectiveness and Relationship between Biased and Unbiased Measures of Dopamine Release and Clearance. ACS Chem Neurosci 2022; 13:1534-1548. [PMID: 35482592 PMCID: PMC10763521 DOI: 10.1021/acschemneuro.2c00033] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Fast-scan cyclic voltammetry (FSCV) is an effective tool for measuring dopamine release and clearance throughout the brain, especially the striatum where dopamine terminals are abundant and signals are heavily regulated by release machinery and the dopamine transporter (DAT). Peak height measurement is perhaps the most common method for measuring dopamine release, but it is influenced by changes in clearance. Michaelis-Menten-based modeling has been a standard in measuring dopamine clearance, but it is problematic in that it requires experimenter fitted modeling subject to experimenter bias. This study presents the use of the first derivative (velocity) of evoked dopamine signals as an alternative approach for measuring and distinguishing dopamine release from clearance. Maximal upward velocity predicts reductions in dopamine peak height due to D2 and GABAB receptor stimulation and by alterations in calcium concentrations. The Michaelis-Menten maximal velocity (Vmax) measure, an approximation for DAT levels, predicts maximal downward velocity in slices and in vivo. Dopamine peak height and upward velocity were similar between wild-type and DAT knock-out (DATKO) mice. In contrast, downward velocity was lower and exponential decay (tau) was higher in DATKO mice, supporting the use of both measures for extreme changes in DAT activity. In slices, the competitive DAT inhibitors cocaine, PTT, and WF23 increased peak height and upward velocity differentially across increasing concentrations, with PTT and cocaine reducing these measures at high concentrations. Downward velocity and tau values decreased and increased respectively across concentrations, with greater potency and efficacy observed with WF23 and PTT. In vivo recordings demonstrated similar effects of WF23, PTT, and cocaine on measures of release and clearance. Tau was a more sensitive measure at low concentrations, supporting its use as a surrogate for the Michaelis-Menten measure of apparent affinity (Km). Together, these results inform on the use of these various measures for dopamine release and clearance.
Collapse
Affiliation(s)
- Anna C. Everett
- Brigham Young University, Department of Cellular Biology and Physiology, Provo, UT 84602, USA
| | - Ben E. Graul
- Brigham Young University, Department of Cellular Biology and Physiology, Provo, UT 84602, USA
| | - Joakim W. Ronström
- Brigham Young University, Department of Cellular Biology and Physiology, Provo, UT 84602, USA
| | - J. Kayden Robinson
- Brigham Young University, Department of Cellular Biology and Physiology, Provo, UT 84602, USA
| | - Daniel B. Watts
- Brigham Young University, Department of Cellular Biology and Physiology, Provo, UT 84602, USA
| | - Rodrigo A. España
- Drexel University, Department of Neurobiology & Anatomy, Philadelphia, PA 28619, USA
| | - Cody A. Siciliano
- Vanderbilt University, Center for Addiction Research, Nashville, TN 37203, USA
| | - Jordan T. Yorgason
- Brigham Young University, Department of Cellular Biology and Physiology, Provo, UT 84602, USA
| |
Collapse
|
2
|
A high-affinity cocaine binding site associated with the brain acid soluble protein 1. Proc Natl Acad Sci U S A 2022; 119:e2200545119. [PMID: 35412917 PMCID: PMC9169839 DOI: 10.1073/pnas.2200545119] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Cocaine is a monoamine transport inhibitor. Current models attributing pharmacologic actions of cocaine to inhibiting the activity of the amine transporters alone failed to translate to the clinic. Cocaine inhibition of the dopamine, serotonin, and norepinephrine transporters is relatively weak, suggesting that blockade of the amine transporters alone cannot account for the actions of cocaine, especially at low doses. There is evidence for significantly more potent actions of cocaine, suggesting the existence of a high-affinity receptor(s) for the drug. Identifying and characterizing such receptors will deepen our understanding of cocaine pharmacologic actions and pave the way for therapeutic development. Here we identify a high-affinity cocaine binding site associated with BASP1 that is involved in mediating the drug’s psychotropic actions. Cocaine exerts its stimulant effect by inhibiting dopamine (DA) reuptake, leading to increased dopamine signaling. This action is thought to reflect the binding of cocaine to the dopamine transporter (DAT) to inhibit its function. However, cocaine is a relatively weak inhibitor of DAT, and many DAT inhibitors do not share cocaine’s behavioral actions. Further, recent reports show more potent actions of the drug, implying the existence of a high-affinity receptor for cocaine. We now report high-affinity binding of cocaine associated with the brain acid soluble protein 1 (BASP1) with a dissociation constant (Kd) of 7 nM. Knocking down BASP1 in the striatum inhibits [3H]cocaine binding to striatal synaptosomes. Depleting BASP1 in the nucleus accumbens but not the dorsal striatum diminishes locomotor stimulation in mice. Our findings imply that BASP1 is a pharmacologically relevant receptor for cocaine.
Collapse
|
3
|
Porcu A, Mostallino R, Serra V, Melis M, Sogos V, Beggiato S, Ferraro L, Manetti F, Gianibbi B, Bettler B, Corelli F, Mugnaini C, Castelli MP. COR758, a negative allosteric modulator of GABA B receptors. Neuropharmacology 2021; 189:108537. [PMID: 33798546 DOI: 10.1016/j.neuropharm.2021.108537] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 03/20/2021] [Accepted: 03/22/2021] [Indexed: 10/21/2022]
Abstract
Allosteric modulators of G protein coupled receptors (GPCRs), including GABABRs (GABABRs), are promising therapeutic candidates. While several positive allosteric modulators (PAM) of GABABRs have been characterized, only recently the first negative allosteric modulator (NAM) has been described. In the present study, we report the characterization of COR758, which acts as GABABR NAM in rat cortical membranes and CHO cells stably expressing GABABRs (CHO-GABAB). COR758 failed to displace the antagonist [3H]CGP54626 from the orthosteric binding site of GABABRs showing that it acts through an allosteric binding site. Docking studies revealed a possible new allosteric binding site for COR758 in the intrahelical pocket of the GABAB1 monomer. COR758 inhibited basal and GABABR-stimulated O-(3-[35Sthio)-triphosphate ([35S]GTPγS) binding in brain membranes and blocked the enhancement of GABABR-stimulated [35S]GTPγS binding by the PAM GS39783. Bioluminescent resonance energy transfer (BRET) measurements in CHO-GABAB cells showed that COR758 inhibited G protein activation by GABA and altered GABABR subunit rearrangements. Additionally, the compound altered GABABR-mediated signaling such as baclofen-induced inhibition of cAMP production in transfected HEK293 cells, agonist-induced Ca2+ mobilization as well as baclofen and the ago-PAM CGP7930 induced phosphorylation of extracellular signal-regulated kinases (ERK1/2) in CHO-GABAB cells. COR758 also prevented baclofen-induced outward currents recorded from rat dopamine neurons, substantiating its property as a NAM for GABABRs. Altogether, these data indicate that COR758 inhibits G protein signaling by GABABRs, likely by interacting with an allosteric binding-site. Therefore, COR758 might serve as a scaffold to develop additional NAMs for therapeutic intervention.
Collapse
Affiliation(s)
- Alessandra Porcu
- Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy; Department of Biomedicine, University of Basel, Klingelbergstrasse 50-70, CH-4056, Basel, Switzerland
| | - Rafaela Mostallino
- Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Valeria Serra
- Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Miriam Melis
- Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Valeria Sogos
- Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy
| | - Sarah Beggiato
- Department of Life Sciences and Biotechnology, Section of Medicinal and Health Products, and LTTA Center, University of Ferrara, Ferrara, Italy; Department of Medical, Oral and Biotechnological Sciences, University of Chieti-Pescara, 66100, Chieti, Italy
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology, Section of Medicinal and Health Products, and LTTA Center, University of Ferrara, Ferrara, Italy
| | - Fabrizio Manetti
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, I-53100, Siena, SI, Italy
| | - Beatrice Gianibbi
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, I-53100, Siena, SI, Italy
| | - Bernhard Bettler
- Department of Biomedicine, University of Basel, Klingelbergstrasse 50-70, CH-4056, Basel, Switzerland
| | - Federico Corelli
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, I-53100, Siena, SI, Italy
| | - Claudia Mugnaini
- Department of Biotechnology, Chemistry, and Pharmacy, University of Siena, I-53100, Siena, SI, Italy
| | - M Paola Castelli
- Department of Biomedical Sciences, University of Cagliari, 09042, Monserrato, Italy; Guy Everett Laboratory, University of Cagliari, 09042, Monserrato, Italy; Center of Excellence "Neurobiology of Addiction", University of Cagliari, 09042, Monserrato, Italy.
| |
Collapse
|
4
|
Adenosine A 2AReceptors in Substance Use Disorders: A Focus on Cocaine. Cells 2020; 9:cells9061372. [PMID: 32492952 PMCID: PMC7348840 DOI: 10.3390/cells9061372] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/28/2020] [Accepted: 05/28/2020] [Indexed: 12/31/2022] Open
Abstract
Several psychoactive drugs can evoke substance use disorders (SUD) in humans and animals, and these include psychostimulants, opioids, cannabinoids (CB), nicotine, and alcohol. The etiology, mechanistic processes, and the therapeutic options to deal with SUD are not well understood. The common feature of all abused drugs is that they increase dopamine (DA) neurotransmission within the mesocorticolimbic circuitry of the brain followed by the activation of DA receptors. D2 receptors were proposed as important molecular targets for SUD. The findings showed that D2 receptors formed heteromeric complexes with other GPCRs, which forced the addiction research area in new directions. In this review, we updated the view on the brain D2 receptor complexes with adenosine (A)2A receptors (A2AR) and discussed the role of A2AR in different aspects of addiction phenotypes in laboratory animal procedures that permit the highly complex syndrome of human drug addiction. We presented the current knowledge on the neurochemical in vivo and ex vivo mechanisms related to cocaine use disorder (CUD) and discussed future research directions for A2AR heteromeric complexes in SUD.
Collapse
|
5
|
Borroto-Escuela DO, Narváez M, Romero-Fernández W, Pinton L, Wydra K, Filip M, Beggiato S, Tanganelli S, Ferraro L, Fuxe K. Acute Cocaine Enhances Dopamine D 2R Recognition and Signaling and Counteracts D 2R Internalization in Sigma1R-D 2R Heteroreceptor Complexes. Mol Neurobiol 2019; 56:7045-7055. [PMID: 30972626 PMCID: PMC6728299 DOI: 10.1007/s12035-019-1580-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 03/20/2019] [Indexed: 12/04/2022]
Abstract
The current study was performed to establish the actions of nanomolar concentrations of cocaine, not blocking the dopamine transporter, on dopamine D2 receptor (D2R)-sigma 1 receptor (δ1R) heteroreceptor complexes and the D2R protomer recognition, signaling and internalization in cellular models. We report the existence of D2R-δ1R heteroreceptor complexes in subcortical limbic areas as well as the dorsal striatum, with different distribution patterns using the in situ proximity ligation assay. Also, through BRET, these heteromers were demonstrated in HEK293 cells. Furthermore, saturation binding assay demonstrated that in membrane preparations of HEK293 cells coexpressing D2R and δ1R, cocaine (1 nM) significantly increased the D2R Bmax values over cells singly expressing D2R. CREB reporter luc-gene assay indicated that coexpressed δ1R significantly reduced the potency of the D2R-like agonist quinpirole to inhibit via D2R activation the forskolin induced increase of the CREB signal. In contrast, the addition of 100 nM cocaine was found to markedly increase the quinpirole potency to inhibit the forskolin-induced increase of the CREB signal in the D2R-δ1R cells. These events were associated with a marked reduction of cocaine-induced internalization of D2R protomers in D2R-δ1R heteromer-containing cells vs D2R singly expressing cells as studied by means of confocal analysis of D2R-δ1R trafficking and internalization. Overall, the formation of D2R-δ1R heteromers enhanced the ability of cocaine to increase the D2R protomer function associated with a marked reduction of its internalization. The existence of D2R-δ1R heteromers opens up a new understanding of the acute actions of cocaine.
Collapse
Affiliation(s)
- Dasiel O. Borroto-Escuela
- Department of Neuroscience, Karolinska Institutet, Biomedicum (B0851). Solnavägen 9, 171 77 Stockholm, Sweden
- Department of Biomolecular Science, Section of Physiology, University of Urbino, Campus Scientifico Enrico Mattei, via Ca’ le Suore 2, 610 29 Urbino, Italy
- Observatorio Cubano de Neurociencias, Grupo Bohío-Estudio, Zayas 50, 62100 Yaguajay, Cuba
| | - Manuel Narváez
- Instituto de Investigación Biomédica de Málaga, Facultad de Medicina, Universidad de Málaga, Málaga, Spain
| | - Wilber Romero-Fernández
- Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, BMC, Box 596, 751 24 Uppsala, Sweden
| | - Luca Pinton
- Department of Neuroscience, Karolinska Institutet, Biomedicum (B0851). Solnavägen 9, 171 77 Stockholm, Sweden
| | - Karolina Wydra
- Institute of Pharmacology, Department of Drug Addiction Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343 Kraków, Poland
| | - Malgorzata Filip
- Institute of Pharmacology, Department of Drug Addiction Pharmacology, Polish Academy of Sciences, 12 Smetna Street, 31-343 Kraków, Poland
| | - Sarah Beggiato
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy
| | - Sergio Tanganelli
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy
| | - Kjell Fuxe
- Department of Neuroscience, Karolinska Institutet, Biomedicum (B0851). Solnavägen 9, 171 77 Stockholm, Sweden
| |
Collapse
|
6
|
Bystrowska B, Frankowska M, Smaga I, Pomierny-Chamioło L, Filip M. Effects of Cocaine Self-Administration and Its Extinction on the Rat Brain Cannabinoid CB1 and CB2 Receptors. Neurotox Res 2018; 34:547-558. [PMID: 29754307 PMCID: PMC6154179 DOI: 10.1007/s12640-018-9910-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Revised: 04/23/2018] [Accepted: 05/01/2018] [Indexed: 12/18/2022]
Abstract
The aim of this study was to evaluate changes in the expression of cannabinoid type 1 (CB1) and 2 (CB2) receptor proteins in several brain regions in rats undergoing cocaine self-administration and extinction training. We used a triad-yoked procedure to distinguish between the motivational and pharmacological effects of cocaine. Using immunohistochemistry, we observed a significant decrease in CB1 receptor expression in the prefrontal cortex, dorsal striatum, and the basolateral and basomedial amygdala following cocaine (0.5 mg/kg/infusion) self-administration. Increased CB1 receptor expression in the ventral tegmental area in rats with previous cocaine exposure was also found. Following cocaine abstinence after 10 days of extinction training, we detected increases in the expression of CB1 receptors in the substantia nigra in both cocaine groups and in the subregions of the amygdala for only the yoked cocaine controls, while any method of cocaine exposure resulted in a decrease in CB2 receptor expression in the prefrontal cortex (p < 0.01), nucleus accumbens (p < 0.01), and medial globus pallidus (p < 0.01). Our findings further support the idea that the eCB system and CB1 receptors are involved in cocaine-reinforced behaviors. Moreover, we detected a cocaine-evoked adaptation in CB2 receptors in the amygdala, prefrontal cortex, and globus pallidus.
Collapse
Affiliation(s)
- Beata Bystrowska
- Department of Toxicology, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland.
| | - Małgorzata Frankowska
- Department of Drug Addiction Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | - Irena Smaga
- Department of Internal Medicine, Jagiellonian University Medical College, Skawińska 8, 31-066, Kraków, Poland
| | - Lucyna Pomierny-Chamioło
- Department of Toxicology, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Małgorzata Filip
- Department of Drug Addiction Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| |
Collapse
|
7
|
Beggiato S, Borelli AC, Borroto-Escuela D, Corbucci I, Tomasini MC, Marti M, Antonelli T, Tanganelli S, Fuxe K, Ferraro L. Cocaine modulates allosteric D 2-σ 1 receptor-receptor interactions on dopamine and glutamate nerve terminals from rat striatum. Cell Signal 2017; 40:116-124. [PMID: 28923416 DOI: 10.1016/j.cellsig.2017.09.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 08/30/2017] [Accepted: 09/14/2017] [Indexed: 10/18/2022]
Abstract
The effects of nanomolar cocaine concentrations, possibly not blocking the dopamine transporter activity, on striatal D2-σ1 heteroreceptor complexes and their inhibitory signaling over Gi/o, have been tested in rat striatal synaptosomes and HEK293T cells. Furthermore, the possible role of σ1 receptors (σ1Rs) in the cocaine-provoked amplification of D2 receptor (D2R)-induced reduction of K+-evoked [3H]-DA and glutamate release from rat striatal synaptosomes, has also been investigated. The dopamine D2-likeR agonist quinpirole (10nM-1μM), concentration-dependently reduced K+-evoked [3H]-DA and glutamate release from rat striatal synaptosomes. The σ1R antagonist BD1063 (100nM), amplified the effects of quinpirole (10 and 100nM) on K+-evoked [3H]-DA, but not glutamate, release. Nanomolar cocaine concentrations significantly enhanced the quinpirole (100nM)-induced decrease of K+-evoked [3H]-DA and glutamate release from rat striatal synaptosomes. In the presence of BD1063 (10nM), cocaine failed to amplify the quinpirole (100nM)-induced effects. In cotransfected σ1R and D2LR HEK293T cells, quinpirole had a reduced potency to inhibit the CREB signal versus D2LR singly transfected cells. In the presence of cocaine (100nM), the potency of quinpirole to inhibit the CREB signal was restored. In D2L singly transfected cells cocaine (100nM and 10μM) exerted no modulatory effects on the inhibitory potency of quinpirole to bring down the CREB signal. These results led us to hypothesize the existence of functional D2-σ1R complexes on the rat striatal DA and glutamate nerve terminals and functional D2-σ1R-DA transporter complexes on the striatal DA terminals. Nanomolar cocaine concentrations appear to alter the allosteric receptor-receptor interactions in such complexes leading to enhancement of Gi/o mediated D2R signaling.
Collapse
Affiliation(s)
- Sarah Beggiato
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy
| | - Andrea Celeste Borelli
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy
| | | | - Ilaria Corbucci
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy
| | | | - Matteo Marti
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy
| | - Tiziana Antonelli
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Sergio Tanganelli
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Kjell Fuxe
- Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology (SVEB), University of Ferrara, Ferrara, Italy.
| |
Collapse
|
8
|
Beggiato S, Borelli AC, Tomasini MC, Morgano L, Antonelli T, Tanganelli S, Cuomo V, Ferraro L. Long-lasting alterations of hippocampal GABAergic neurotransmission in adult rats following perinatal Δ 9-THC exposure. Neurobiol Learn Mem 2017; 139:135-143. [PMID: 28104530 DOI: 10.1016/j.nlm.2016.12.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 12/28/2016] [Indexed: 11/26/2022]
Abstract
The long-lasting effects of gestational cannabinoids exposure on the adult brain of the offspring are still controversial. It has already been shown that pre- or perinatal cannabinoids exposure induces learning and memory disruption in rat adult offspring, associated with permanent alterations of cortical glutamatergic neurotransmission and cognitive deficits. In the present study, the risk of long-term consequences induced by perinatal exposure to cannabinoids on rat hippocampal GABAergic system of the offspring, has been explored. To this purpose, pregnant rats were treated daily with Delta9-tetrahydrocannabinol (Δ9-THC; 5mg/kg) or its vehicle. Perinatal exposure to Δ9-THC induced a significant reduction (p<0.05) in basal and K+-evoked [3H]-GABA outflow of 90-day-old rat hippocampal slices. These effects were associated with a reduction of hippocampal [3H]-GABA uptake compared to vehicle exposed group. Perinatal exposure to Δ9-THC induced a significant reduction of CB1 receptor binding (Bmax) in the hippocampus of 90-day-old rats. However, a pharmacological challenge with either Δ9-THC (0.1μM) or WIN55,212-2 (2μM), similarly reduced K+-evoked [3H]-GABA outflow in both experimental groups. These reductions were significantly blocked by adding the selective CB1 receptor antagonist SR141716A. These findings suggest that maternal exposure to cannabinoids induces long-term alterations of hippocampal GABAergic system. Interestingly, previous behavioral studies demonstrated that, under the same experimental conditions as in the present study, perinatal cannabinoids exposure induced cognitive impairments in adult rats, thus resembling some effects observed in humans. Although it is difficult and sometimes misleading to extrapolate findings obtained from animal models to humans, the possibility that an alteration of hippocampus aminoacidergic transmission might underlie, at least in part, some of the cognitive deficits affecting the offspring of marijuana users, is supported.
Collapse
Affiliation(s)
- Sarah Beggiato
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy
| | | | | | - Lucia Morgano
- Department of Clinical and Experimental Medicine, University of Foggia, Italy
| | - Tiziana Antonelli
- Department of Medical Sciences, University of Ferrara, Italy; LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Sergio Tanganelli
- Department of Medical Sciences, University of Ferrara, Italy; LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Vincenzo Cuomo
- Department of Physiology and Pharmacology, "Sapienza" University of Rome, Italy
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology, University of Ferrara, Italy; LTTA Centre, University of Ferrara, Ferrara, Italy.
| |
Collapse
|
9
|
Ossato A, Uccelli L, Bilel S, Canazza I, Di Domenico G, Pasquali M, Pupillo G, De Luca MA, Boschi A, Vincenzi F, Rimondo C, Beggiato S, Ferraro L, Varani K, Borea PA, Serpelloni G, De-Giorgio F, Marti M. Psychostimulant Effect of the Synthetic Cannabinoid JWH-018 and AKB48: Behavioral, Neurochemical, and Dopamine Transporter Scan Imaging Studies in Mice. Front Psychiatry 2017; 8:130. [PMID: 28824464 PMCID: PMC5543288 DOI: 10.3389/fpsyt.2017.00130] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 07/06/2017] [Indexed: 12/16/2022] Open
Abstract
JWH-018 and AKB48 are two synthetic cannabinoids (SCBs) belonging to different structural classes and illegally marketed as incense, herbal preparations, or chemical supply for theirs psychoactive cannabis-like effects. Clinical reports from emergency room reported psychomotor agitation as one of the most frequent effects in people assuming SCBs. This study aimed to investigate the psychostimulant properties of JWH-018 and AKB48 in male CD-1 mice and to compare their behavioral and biochemical effects with those caused by cocaine and amphetamine. In vivo studies showed that JWH-018 and AKB48, as cocaine and amphetamine, facilitated spontaneous locomotion in mice. These effects were prevented by CB1 receptor blockade and dopamine (DA) D1/5 and D2/3 receptors inhibition. SPECT-CT studies on dopamine transporter (DAT) revealed that, as cocaine and amphetamine, JWH-018 and AKB48 decreased the [123I]-FP-CIT binding in the mouse striatum. Conversely, in vitro competition binding studies revealed that, unlike cocaine and amphetamine, JWH-018 and AKB48 did not bind to mouse or human DAT. Moreover, microdialysis studies showed that the systemic administration of JWH-018, AKB48, cocaine, and amphetamine stimulated DA release in the nucleus accumbens (NAc) shell of freely moving mice. Finally, unlike amphetamine and cocaine, JWH-018 and AKB48 did not induce any changes on spontaneous [3H]-DA efflux from murine striatal synaptosomes. The present results suggest that SCBs facilitate striatal DA release possibly with different mechanisms than cocaine and amphetamine. Furthermore, they demonstrate, for the first time, that JWH-018 and AKB48 induce a psychostimulant effect in mice possibly by increasing NAc DA release. These data, according to clinical reports, outline the potential psychostimulant action of SCBs highlighting their possible danger to human health.
Collapse
Affiliation(s)
- Andrea Ossato
- Department of Life Sciences and Biotechnology (SVeB), University of Ferrara, Ferrara, Italy.,Section of Legal Medicine, Institute of Public Health, Catholic University of the Sacred Heart, Rome, Italy
| | - Licia Uccelli
- Morphology, Surgery and Experimental Medicine Department, University of Ferrara, Ferrara, Italy
| | - Sabrine Bilel
- Department of Life Sciences and Biotechnology (SVeB), University of Ferrara, Ferrara, Italy
| | - Isabella Canazza
- Department of Life Sciences and Biotechnology (SVeB), University of Ferrara, Ferrara, Italy.,Section of Legal Medicine, Institute of Public Health, Catholic University of the Sacred Heart, Rome, Italy
| | | | - Micol Pasquali
- Physics and Hearth Science Department, University of Ferrara, Ferrara, Italy
| | - Gaia Pupillo
- Legnaro National Laboratories, Italian National Institute for Nuclear Physics (LNL-INFN), Legnaro, Italy
| | | | - Alessandra Boschi
- Morphology, Surgery and Experimental Medicine Department, University of Ferrara, Ferrara, Italy
| | - Fabrizio Vincenzi
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Claudia Rimondo
- Department of Diagnostic and Public Health, University of Verona, Verona, Italy
| | - Sarah Beggiato
- Department of Life Sciences and Biotechnology (SVeB), University of Ferrara, Ferrara, Italy
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology (SVeB), University of Ferrara, Ferrara, Italy
| | - Katia Varani
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Pier Andrea Borea
- Department of Medical Sciences, University of Ferrara, Ferrara, Italy
| | - Giovanni Serpelloni
- Department of Psychiatry in the College of Medicine, Drug Policy Institute, University of Florida, Gainesville, FL, United States
| | - Fabio De-Giorgio
- Section of Legal Medicine, Institute of Public Health, Catholic University of the Sacred Heart, Rome, Italy
| | - Matteo Marti
- Department of Life Sciences and Biotechnology (SVeB), University of Ferrara, Ferrara, Italy.,Center for Neuroscience, Istituto Nazionale di Neuroscienze, Ferrara, Italy
| |
Collapse
|
10
|
Wydra K, Gołembiowska K, Suder A, Kamińska K, Fuxe K, Filip M. On the role of adenosine (A)₂A receptors in cocaine-induced reward: a pharmacological and neurochemical analysis in rats. Psychopharmacology (Berl) 2015; 232:421-35. [PMID: 25027583 DOI: 10.1007/s00213-014-3675-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2014] [Accepted: 06/27/2014] [Indexed: 10/25/2022]
Abstract
RATIONALE Several studies have suggested the inhibitory control of adenosine (A)2A receptor stimulation in cocaine-induced behavioral actions. OBJECTIVES A combination of systemic or local drug injections and in vivo neurochemical analysis investigated A2A receptors in cocaine and food reward. METHODS Rats, trained to self-administer cocaine or food, were tested with the selective A2A receptor antagonists KW 6002 and SCH 58261 or the selective A2A receptor agonist CGS 21680. Extracellular dopamine, glutamate, and GABA levels in the nucleus accumbens and ventral pallidum were determined following intra-accumbal CGS 21680 administration during cocaine self-administration. RESULTS Neither KW 6002 nor SCH 58261 (0.25-1 mg/kg) altered cocaine self-administration (0.125-0.5 mg/kg/infusion), while CGS 21680 (0.2-0.4 mg/kg) produced a downward shift in the cocaine dose-response curve under a fixed ratio schedule of reinforcement and decreased the cocaine breaking point. CGS 21680 blocked also operant responding for food, while the A2A receptor antagonists were inactive. Local steady-state infusion of CGS 21680 (10 μM) during cocaine self-administration increased the active level pressing that was accompanied with reduced dopamine and increased GABA in the nucleus accumbens in the absence of changes in GABA and glutamate levels in the ventral pallidum. Pretreatment with systemic KW 6002 counteracted the increases in number of cocaine infusions seen after intra-accumbal administration of CGS 21680. CONCLUSION The findings support a role of A2A receptors in modulating goal-maintained behaviors. They also indicate that increased accumbal GABA release involving an antagonistic A2A-D2 receptor interaction can participate in mediating the inhibitory effects of the A2A agonist on cocaine reward.
Collapse
Affiliation(s)
- Karolina Wydra
- Laboratory of Drug Addiction Pharmacology, Department of Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, 31-343, Kraków, Poland
| | | | | | | | | | | |
Collapse
|
11
|
Ferrante A, Martire A, Pepponi R, Varani K, Vincenzi F, Ferraro L, Beggiato S, Tebano MT, Popoli P. Expression, pharmacology and functional activity of adenosine A1 receptors in genetic models of Huntington's disease. Neurobiol Dis 2014; 71:193-204. [PMID: 25132555 DOI: 10.1016/j.nbd.2014.08.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Revised: 07/15/2014] [Accepted: 08/06/2014] [Indexed: 12/20/2022] Open
Abstract
Adenosine A1 receptor (A1R) stimulation exerts beneficial effects in response to various insults to the brain and, although it was found neuroprotective in a lesional model of Huntington's disease (HD), the features of this receptor in genetic models of HD have never been explored. In the present study we characterized the expression, affinity and functional effects of A1Rs in R6/2 mice (the most widely used transgenic model of HD) and in a cellular model of HD. Binding studies revealed that the density of A1Rs was significantly reduced in the cortex and the striatum of R6/2 mice compared to age-matched wild-type (WT), while receptor affinity was unchanged. The selective A1R agonist cyclopentyladenosine (CPA, 300nM) was significantly more effective in reducing synaptic transmission in corticostriatal slices from symptomatic R6/2 than in age-matched WT mice. Such an effect was due to a stronger inhibition of glutamate release from the pre-synaptic terminal. The different functional activities of A1Rs in HD mice were associated also to a different intracellular signaling pathway involved in the synaptic effect of CPA. In fact, while the PKA pathway was involved in both genotypes, p38 MAPK inhibitor SB203580 partially prevented synaptic effects of CPA in R6/2, but not in WT, mice; moreover, CPA differently modulated the phosphorylation status of p38 in the two genotypes. In vitro studies confirmed a different behavior of A1Rs in HD: CPA (100 nM for 5h) modulated cell viability in STHdh(Q111/Q111) (mhttHD cells), without affecting the viability of STHdh(Q7/Q7) (wthtt cells). This effect was prevented by the application of SB203580. Our results demonstrate that in the presence of the HD mutation A1Rs undergo profound changes in terms of expression, pharmacology and functional activity. These changes have to be taken in due account when considering A1Rs as a potential therapeutic target for this disease.
Collapse
Affiliation(s)
- Antonella Ferrante
- Istituto Superiore di Sanità, Department of Therapeutic Research and Medicines Evaluation, Viale Regina Elena 299, 00161 Rome, Italy.
| | - Alberto Martire
- Istituto Superiore di Sanità, Department of Therapeutic Research and Medicines Evaluation, Viale Regina Elena 299, 00161 Rome, Italy
| | - Rita Pepponi
- Istituto Superiore di Sanità, Department of Therapeutic Research and Medicines Evaluation, Viale Regina Elena 299, 00161 Rome, Italy
| | - Katia Varani
- Department of Medical Sciences, Pharmacology Section, University of Ferrara, via Fossato di Mortara 17/19, 44121 Ferrara, Italy
| | - Fabrizio Vincenzi
- Department of Medical Sciences, Pharmacology Section, University of Ferrara, via Fossato di Mortara 17/19, 44121 Ferrara, Italy
| | - Luca Ferraro
- Department of Life Sciences and Biotechnology, University of Ferrara, Via Fossato di Mortara 17, 44121 Ferrara, Italy
| | - Sarah Beggiato
- Department of Medical Sciences, Pharmacology Section, University of Ferrara, via Fossato di Mortara 17/19, 44121 Ferrara, Italy
| | - Maria Teresa Tebano
- Istituto Superiore di Sanità, Department of Therapeutic Research and Medicines Evaluation, Viale Regina Elena 299, 00161 Rome, Italy
| | - Patrizia Popoli
- Istituto Superiore di Sanità, Department of Therapeutic Research and Medicines Evaluation, Viale Regina Elena 299, 00161 Rome, Italy
| |
Collapse
|
12
|
Bystrowska B, Smaga I, Frankowska M, Filip M. Changes in endocannabinoid and N-acylethanolamine levels in rat brain structures following cocaine self-administration and extinction training. Prog Neuropsychopharmacol Biol Psychiatry 2014; 50:1-10. [PMID: 24334211 DOI: 10.1016/j.pnpbp.2013.12.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2013] [Revised: 11/25/2013] [Accepted: 12/05/2013] [Indexed: 12/14/2022]
Abstract
Preclinical investigations have demonstrated that drugs of abuse alter the levels of lipid-based signalling molecules, including endocannabinoids (eCBs) and N-acylethanolamines (NAEs), in the rodent brain. In addition, several drugs targeting eCBs and/or NAEs are implicated in reward and/or seeking behaviours related to the stimulation of dopamine systems in the brain. In our study, the brain levels of eCBs (anandamide (AEA) and 2-arachidonoylglycerol (2-AG)) and NAEs (oleoylethanolamide (OEA) and palmitoylethanolamide (PEA)) were analyzed via an LC-MS/MS method in selected brain structures of rats during cocaine self-administration and after extinction training according to the "yoked" control procedure. Repeated (14days) cocaine (0.5mg/kg/infusion) self-administration and yoked drug delivery resulted in a significant decrease (ca. 52%) in AEA levels in the cerebellum, whereas levels of 2-AG increased in the frontal cortex, the hippocampus and the cerebellum and decreased in the hippocampus and the dorsal striatum. In addition, we detected increases (>150%) in the levels of OEA and PEA in the limbic areas in both cocaine treated groups, as well as an increase in the tissue levels of OEA in the dorsal striatum in only the yoked cocaine group and increases in the tissue levels of PEA in the dorsal striatum (both cocaine groups) and the nucleus accumbens (yoked cocaine group only). Compared to the yoked saline control group, extinction training (10days) resulted in a potent reduction in AEA levels in the frontal cortex, the hippocampus and the nucleus accumbens and in 2-AG levels in the hippocampus, the dorsal striatum and the cerebellum. The decreases in the limbic and subcortical areas were more apparent for rats that self-administered cocaine. Following extinction, there was a region-specific change in the levels of NAEs in rats previously injected with cocaine; a potent increase (ca. 100%) in the levels of OEA and PEA was detected in the prefrontal cortex and the hippocampus, whilst a drop was noted in the striatal areas versus yoked saline yoked animals. Our findings support the previous pharmacological evidence that the eCB system and NAEs are involved in reinforcement and extinction of positively reinforced behaviours and that these lipid-derived molecules may represent promising targets for the development of new treatments for drug addiction.
Collapse
Affiliation(s)
- Beata Bystrowska
- Department of Toxicology, Collegium Medicum, Jagiellonian University, Medyczna 9, PL 30-688 Kraków, Poland.
| | - Irena Smaga
- Department of Toxicology, Collegium Medicum, Jagiellonian University, Medyczna 9, PL 30-688 Kraków, Poland
| | - Małgorzata Frankowska
- Laboratory of Drug Addiction Pharmacology, Department of Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, PL 31-343 Kraków, Poland
| | - Małgorzata Filip
- Department of Toxicology, Collegium Medicum, Jagiellonian University, Medyczna 9, PL 30-688 Kraków, Poland; Laboratory of Drug Addiction Pharmacology, Department of Pharmacology, Institute of Pharmacology, Polish Academy of Sciences, Smętna 12, PL 31-343 Kraków, Poland
| |
Collapse
|
13
|
Fuxe K, Borroto-Escuela DO, Tarakanov A, Fernandez WR, Manger P, Rivera A, van Craenenbroeck K, Skieterska K, Diaz-Cabiale Z, Filip M, Ferraro L, Tanganelli S, Guidolin D, Cullheim S, de la Mora MP, Agnati LF. Understanding the balance and integration of volume and synaptic transmission. Relevance for psychiatry. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.npbr.2013.10.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
14
|
Frankowska M, Marcellino D, Adamczyk P, Filip M, Fuxe K. Effects of cocaine self-administration and extinction on D2 -like and A2A receptor recognition and D2 -like/Gi protein coupling in rat striatum. Addict Biol 2013; 18:455-66. [PMID: 22500978 DOI: 10.1111/j.1369-1600.2012.00452.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Striatal adenosine (A)2 -dopamine (D)2 receptor (R) heteromers exist with antagonistic interactions. We have studied these Rs and their interactions during cocaine self-administration and extinction using a 'yoked' protocol to understand the role of motivational mechanisms behind the adaptive observed. In the ventral striatum, a significant increase in the A2A R density was observed in rats that received 'yoked' cocaine during maintenance phase and following its extinction while this significant increase was only observed after extinction from cocaine self-administration. In the dorsal striatum, a significant increase in the affinity of A2A Rs was determined in the two groups of rats that received cocaine during maintenance. D2 -like Rs were significantly increased in the dorsal striatum of animals that received 'yoked' cocaine during maintenance. In the rat dorsal, but not the ventral, striatum significant reductions in the EC50 values for dopamine and increases in the guanosine5'-([γ]-thio)triphosphate (GTPγS) accumulation were observed following active and passive cocaine injections during maintenance. After 10-day extinction, a significant reduction of the Bmax value of GTPγS accumulation was demonstrated in the dorsal striatum of rats previously self-administered cocaine, while a significant reduction of the EC50 value for dopamine in the ventral striatum was found in the 'yoked' cocaine group. By comparing the cocaine self-administration group with the 'yoked' cocaine group, evidence for the existence of motivational mechanisms that guide adaptive changes in the A2A R and D2 R and in the D2 -Gi coupling differentially developed in the ventral and dorsal striatum during cocaine maintenance and its extinction has been demonstrated.
Collapse
Affiliation(s)
- Malgorzata Frankowska
- Institute of Pharmacology Polish Academy of Sciences, Department of Pharmacology, Smetna 12, Kraków, Poland.
| | | | | | | | | |
Collapse
|
15
|
Giuliani A, Beggiato S, Baldassarro VA, Mangano C, Giardino L, Imbimbo BP, Antonelli T, Calzà L, Ferraro L. CHF5074 restores visual memory ability and pre-synaptic cortical acetylcholine release in pre-plaque Tg2576 mice. J Neurochem 2013; 124:613-20. [PMID: 23278303 DOI: 10.1111/jnc.12136] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Revised: 12/23/2012] [Accepted: 12/24/2012] [Indexed: 12/11/2022]
Abstract
CHF5074, a new microglial modulator, attenuates memory deficit in Alzheimer's disease transgenic mice. In this study, the effect of an acute or subacute CHF5074 treatment on in vivo novel object recognition test and on [³H]Acetylcholine (ACh) and GABA release in pre-plaque (7-month-old) Tg2576 mice have been compared with those induced by the γ-secretase inhibitor LY450139 (semagacestat). Vehicle-treated Tg2576 mice displayed an impairment of recognition memory compared with wild-type animals. This impairment was recovered in transgenic animals acutely treated with CHF5074 (30 mg/kg), while LY450139 (1, 3, 10 mg/kg) was ineffective. In frontal cortex synaptosomes from vehicle-treated Tg2576 mice, K⁺-evoked [³H]ACh release was lower than that measured in wild-type mice. This reduction was absent in transgenic animals subacutely treated with CHF5074 (30 mg/kg daily for 8 days), while it was slightly, not significantly, amplified by LY450139 (3 mg/kg daily for 8 days). There were no differences between the groups on spontaneous [³H]ACh release as well as spontaneous and K⁺-evoked GABA release. These results suggest that CHF5074 has beneficial effects on visual memory and cortical cholinergic dysfunctions in pre-plaque Tg2576 mice. Together with previous findings, these data suggest that CHF5074 could be a possible candidate for early Alzheimer's disease therapeutic regimens.
Collapse
Affiliation(s)
- Alessandro Giuliani
- Department of Veterinary Medicine and Health Science, University of Bologna, Bologna, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
16
|
Ferraro L, Frankowska M, Marcellino D, Zaniewska M, Beggiato S, Filip M, Tomasini MC, Antonelli T, Tanganelli S, Fuxe K. A novel mechanism of cocaine to enhance dopamine d2-like receptor mediated neurochemical and behavioral effects. An in vivo and in vitro study. Neuropsychopharmacology 2012; 37:1856-66. [PMID: 22453136 PMCID: PMC3376318 DOI: 10.1038/npp.2012.33] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Recent in vitro results suggest that cocaine may exert direct and/or indirect allosteric enhancing actions at dopamine (DA) D(2) receptors (D(2)Rs). In the present paper we tested the hypothesis that cocaine in vivo can enhance the effects of the D(2)-likeR agonist quinpirole in rats by using microdialysis and pharmacological behavioral studies. Furthermore, in vitro D(2)-likeR binding characteristics and Gα(i/o)-protein coupling, in the absence and in the presence of cocaine, have been investigated in rat striatal membranes. Intra-nucleus accumbens perfusion of the D(2)-likeR agonist quinpirole (10 μM) reduced local dialysate glutamate levels, whereas cocaine (10 and 100 nM) was ineffective. At a low concentration (100 nM), cocaine significantly enhanced quinpirole-induced reduction of accumbal extracellular glutamate levels. The behavioral experiments showed that cocaine (0.625 mg/kg), but not the DA uptake blocker GBR 12783 (1.25 mg/kg), enhanced quinpirole (1 mg/kg)-induced hyperlocomotion. Finally, cocaine (100 nM), but not GBR 12783 (200 nM), produced a small, but significant increase in the efficacy of DA to stimulate binding of GTPγS to striatal D(2)-likeRs, whereas the D(2)-likeR binding characteristics were unchanged in striatal membranes by cocaine in the nM range. The significant increase in the maximal response to DA-stimulated GTPγS binding to D(2)-likeRs by 100 nM cocaine remained in the presence of GBR 12783. The observed cocaine-induced enhancement of the Gα(i/o)-protein coupling of D(2)Rs may be in part because of allosteric direct and/or indirect enhancing effects of cocaine at these receptors. These novel actions of cocaine may have relevance for understanding the actions of cocaine upon accumbal DA, and/or glutamate transmission and thus its rewarding as well as relapsing effects.
Collapse
Affiliation(s)
- Luca Ferraro
- Department of Clinical and Experimental Medicine, Pharmacology Section and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Malgorzata Frankowska
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden,Laboratory of Drug Addiction Pharmacology, Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Kraków, Poland
| | - Daniel Marcellino
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Magdalena Zaniewska
- Laboratory of Drug Addiction Pharmacology, Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Kraków, Poland
| | - Sarah Beggiato
- Department of Clinical and Experimental Medicine, Pharmacology Section and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Malgorzata Filip
- Laboratory of Drug Addiction Pharmacology, Department of Pharmacology, Institute of Pharmacology Polish Academy of Sciences, Kraków, Poland,Department of Toxicology, Faculty of Pharmacy, Jagiellonian University College of Medicine, Kraków, Poland
| | - Maria Cristina Tomasini
- Department of Clinical and Experimental Medicine, Pharmacology Section and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Tiziana Antonelli
- Department of Clinical and Experimental Medicine, Pharmacology Section and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Sergio Tanganelli
- Department of Clinical and Experimental Medicine, Pharmacology Section and LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Kjell Fuxe
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden,Department of Neuroscience, Karolinska Institutet, Retzius väg 8, Stockholm 17177, Sweden, Tel: +46 8 524 870 78, Fax: +46 8 315 572 1, E-mail:
| |
Collapse
|
17
|
The effects of cannabinoid CB1, CB2 and vanilloid TRPV1 receptor antagonists on cocaine addictive behavior in rats. Brain Res 2012; 1444:45-54. [DOI: 10.1016/j.brainres.2012.01.030] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Revised: 12/19/2011] [Accepted: 01/12/2012] [Indexed: 12/11/2022]
|
18
|
Unbalance of CB1 receptors expressed in GABAergic and glutamatergic neurons in a transgenic mouse model of Huntington's disease. Neurobiol Dis 2012; 45:983-91. [DOI: 10.1016/j.nbd.2011.12.017] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2011] [Revised: 11/11/2011] [Accepted: 12/04/2011] [Indexed: 11/19/2022] Open
|
19
|
Fijał K, Pachuta A, McCreary AC, Wydra K, Nowak E, Papp M, Bieńkowski P, Kotlińska J, Filip M. Effects of serotonin (5-HT)6 receptor ligands on responding for cocaine reward and seeking in rats. Pharmacol Rep 2010; 62:1005-14. [DOI: 10.1016/s1734-1140(10)70362-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 10/06/2010] [Indexed: 10/25/2022]
|