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Fernandes L, Kleene R, Congiu L, Freitag S, Kneussel M, Loers G, Schachner M. CHL1 depletion affects dopamine receptor D2-dependent modulation of mouse behavior. Front Behav Neurosci 2023; 17:1288509. [PMID: 38025382 PMCID: PMC10665519 DOI: 10.3389/fnbeh.2023.1288509] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 10/26/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The dopaminergic system plays a key role in the appropriate functioning of the central nervous system, where it is essential for emotional balance, arousal, reward, and motor control. The cell adhesion molecule close homolog of L1 (CHL1) contributes to dopaminergic system development, and CHL1 and the dopamine receptor D2 (D2R) are associated with mental disorders like schizophrenia, addiction, autism spectrum disorder and depression. Methods Here, we investigated how the interplay between CHL1 and D2R affects the behavior of young adult male and female wild-type (CHL+/+) and CHL1-deficient (CHL1-/-) mice, when D2R agonist quinpirole and antagonist sulpiride are applied. Results Low doses of quinpirole (0.02 mg/kg body weight) induced hypolocomotion of CHL1+/+ and CHL1-/- males and females, but led to a delayed response in CHL1-/- mice. Sulpiride (1 mg/kg body weight) affected locomotion of CHL1-/- females and social interaction of CHL1+/+ females as well as social interactions of CHL1-/- and CHL1+/+ males. Quinpirole increased novelty-seeking behavior of CHL1-/- males compared to CHL1+/+ males. Vehicle-treated CHL1-/- males and females showed enhanced working memory and reduced stress-related behavior. Discussion We propose that CHL1 regulates D2R-dependent functions in vivo. Deficiency of CHL1 leads to abnormal locomotor activity and emotionality, and to sex-dependent behavioral differences.
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Affiliation(s)
- Luciana Fernandes
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Ralf Kleene
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Ludovica Congiu
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Sandra Freitag
- Institut für Molekulare Neurogenetik, Zentrum für Molekulare Neurobiologie Hamburg, ZMNH, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Matthias Kneussel
- Institut für Molekulare Neurogenetik, Zentrum für Molekulare Neurobiologie Hamburg, ZMNH, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Gabriele Loers
- Zentrum für Molekulare Neurobiologie, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Melitta Schachner
- Department of Cell Biology and Neuroscience, Keck Center for Collaborative Neuroscience, Rutgers University, Piscataway, NJ, United States
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Wenk D, Khan S, Ignatchenko V, Hübner H, Gmeiner P, Weikert D, Pischetsrieder M, Kislinger T. Phosphoproteomic Analysis of Dopamine D2 Receptor Signaling Reveals Interplay of G Protein- and β-Arrestin-Mediated Effects. J Proteome Res 2023; 22:259-271. [PMID: 36508580 PMCID: PMC9831068 DOI: 10.1021/acs.jproteome.2c00707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Leveraging biased signaling of G protein-coupled receptors has been proposed as a promising strategy for the development of drugs with higher specificity. However, the consequences of selectively targeting G protein- or β-arrestin-mediated signaling on cellular functions are not comprehensively understood. In this study, we utilized phosphoproteomics to gain a systematic overview of signaling induced by the four biased and balanced dopamine D2 receptor (D2R) ligands MS308, BM138, quinpirole, and sulpiride in an in vitro D2R transfection model. Quantification of 14,160 phosphosites revealed a low impact of the partial G protein agonist MS308 on cellular protein phosphorylation, as well as surprising similarities between the balanced agonist quinpirole and the inverse agonist sulpiride. Analysis of the temporal profiles of ligand-induced phosphorylation events showed a transient impact of the G protein-selective agonist MS308, whereas the β-arrestin-preferring agonist BM138 elicited a delayed, but more pronounced response. Functional enrichment analysis of ligand-impacted phosphoproteins and treatment-linked kinases confirmed multiple known functions of D2R signaling while also revealing novel effects, for example of MS308 on sterol regulatory element-binding protein-related gene expression. All raw data were deposited in MassIVE (MSV000089457).
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Affiliation(s)
- Deborah Wenk
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada
| | - Shahbaz Khan
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada
| | - Vladimir Ignatchenko
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada
| | - Harald Hübner
- Medicinal
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Peter Gmeiner
- Medicinal
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Dorothee Weikert
- Medicinal
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Monika Pischetsrieder
- Food
Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Nikolaus-Fiebiger-Strasse 10, 91058 Erlangen, Germany
| | - Thomas Kislinger
- Princess
Margaret Cancer Centre, University Health
Network, 101 College
Street, Toronto, Ontario M5G 1L7, Canada,Department
of Medical Biophysics, University of Toronto, 101 College Street, Toronto, Ontario M5G 1L7, Canada,
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Rezaei M, Ghafouri S, Asgari A, Barkley V, Fathollahi Y, Rostami S, Shojaei A, Mirnajafi‐Zadeh J. Involvement of dopamine D 2 -like receptors in the antiepileptogenic effects of deep brain stimulation during kindling in rats. CNS Neurosci Ther 2022; 29:587-596. [PMID: 36514209 PMCID: PMC9873507 DOI: 10.1111/cns.14059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 07/25/2022] [Accepted: 11/30/2022] [Indexed: 12/15/2022] Open
Abstract
AIMS Deep brain electrical stimulation (DBS), as a potential therapy for drug resistive epileptic patients, has inhibitory action on epileptogenesis. In the present investigation, the role of dopamine D2 -like receptors in the antiepileptogenic action of DBS was studied. METHODS Seizures were induced in adult rats by stimulating the perforant path in a semi-rapid kindling method. Five minutes after the last kindling stimulation, daily DBS was applied to the perforant path at the pattern of low frequency stimulation (LFS; 1 Hz; pulse duration: 0.1 ms; intensity: 50-150 μA; 4 trains of 200 pulses at 5 min intervals). Sulpiride (10 μg/1 μl, i.c.v.), a selective dopamine D2 -like receptor antagonist, was administered prior to the daily LFS application. RESULTS Kindling stimulations increased cumulative daily behavioral seizure stages, daily afterdischarge duration (dADD), and population spike amplitude (PS) in dentate gyrus following perforant path stimulation, while applying LFS decreased the kindled seizures' parameters. In addition, kindling potentiated the early (at 10-50 ms inter-pulse interval) and late (at 150-1000 ms inter-pulse interval) paired-pulse inhibition and decreased the paired-pulse facilitation (at 70-100 ms inter-pulse interval). These effects were also inhibited by applying LFS. All inhibitory effects of LFS on kindling procedure were prevented by sulpiride administration. CONCLUSION These data may suggest that LFS exerts its preventive effect on kindling development, at least partly, through the receptors on which sulpiride acts which are mainly dopamine D2 -like (including D2 , D3 , and D4 ) receptors.
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Affiliation(s)
- Mahmoud Rezaei
- Department of Physiology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
| | - Samireh Ghafouri
- Department of Physiology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
| | - Azam Asgari
- Department of BiologyUniversity of VictoriaVictoriaBritish ColumbiaCanada
| | - Victoria Barkley
- Krembil Research InstituteUniversity Health NetworkTorontoOntarioCanada
| | - Yaghoub Fathollahi
- Department of Physiology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
| | - Sareh Rostami
- Department of Physiology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
| | - Amir Shojaei
- Department of Physiology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran
| | - Javad Mirnajafi‐Zadeh
- Department of Physiology, Faculty of Medical SciencesTarbiat Modares UniversityTehranIran,Institute for Brain Sciences and CognitionTarbiat Modares UniversityTehranIran
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4
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de Oliveira Alves C, Reimer AE, de Oliveira AR. Involvement of D2-like dopaminergic receptors in contextual fear conditioning in female rats: influence of estrous cycle. Front Behav Neurosci 2022; 16:1033649. [PMID: 36518813 PMCID: PMC9742248 DOI: 10.3389/fnbeh.2022.1033649] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 11/08/2022] [Indexed: 10/19/2023] Open
Abstract
Introduction: Dopamine has been increasingly recognized as a key neurotransmitter regulating fear/anxiety states. Nevertheless, the influence of sex and estrous cycle differences on the role of dopamine in fear responses needs further investigation. We aimed to evaluate the effects of sulpiride (a dopaminergic D2-like receptor antagonist) on contextual fear conditioning in females while exploring the influence of the estrous cycle. Methods: First, using a contextual fear conditioning paradigm, we assessed potential differences in acquisition, expression, and extinction of the conditioned freezing response in male and female (split in proestrus/estrus and metestrus/diestrus) Wistar rats. In a second cohort, we evaluated the effects of sulpiride (20 and 40 mg/kg) on contextual conditioned fear in females during proestrus/estrus and metestrus/diestrus. Potential nonspecific effects were assessed in motor activity assays (catalepsy and open-field tests). Results: No sex differences nor estrous cycle effects on freezing behavior were observed during the fear conditioning phases. Sulpiride reduced freezing expression in female rats. Moreover, females during the proestrus/estrus phases of the estrous cycle were more sensitive to the effects of sulpiride than females in metestrus/diestrus. Sulpiride did not cause motor impairments. Discussion: Although no sex or estrous cycle differences were observed in basal conditioned fear expression and extinction, the estrous cycle seems to influence the effects of D2-like antagonists on contextual fear conditioning.
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Affiliation(s)
- Camila de Oliveira Alves
- Department of Psychology, Center of Education and Human Sciences, Federal University of São Carlos (UFSCar), São Carlos, Brazil
- Institute of Neuroscience and Behavior (INeC), Ribeirão Preto, Brazil
| | - Adriano Edgar Reimer
- Department of Psychology, Center of Education and Human Sciences, Federal University of São Carlos (UFSCar), São Carlos, Brazil
- Institute of Neuroscience and Behavior (INeC), Ribeirão Preto, Brazil
| | - Amanda Ribeiro de Oliveira
- Department of Psychology, Center of Education and Human Sciences, Federal University of São Carlos (UFSCar), São Carlos, Brazil
- Institute of Neuroscience and Behavior (INeC), Ribeirão Preto, Brazil
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5
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Sperl MFJ, Panitz C, Skoluda N, Nater UM, Pizzagalli DA, Hermann C, Mueller EM. Alpha-2 Adrenoreceptor Antagonist Yohimbine Potentiates Consolidation of Conditioned Fear. Int J Neuropsychopharmacol 2022; 25:759-773. [PMID: 35748393 PMCID: PMC9515133 DOI: 10.1093/ijnp/pyac038] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 05/26/2022] [Accepted: 06/21/2022] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Hyperconsolidation of aversive associations and poor extinction learning have been hypothesized to be crucial in the acquisition of pathological fear. Previous animal and human research points to the potential role of the catecholaminergic system, particularly noradrenaline and dopamine, in acquiring emotional memories. Here, we investigated in a between-participants design with 3 groups whether the noradrenergic alpha-2 adrenoreceptor antagonist yohimbine and the dopaminergic D2-receptor antagonist sulpiride modulate long-term fear conditioning and extinction in humans. METHODS Fifty-five healthy male students were recruited. The final sample consisted of n = 51 participants who were explicitly aware of the contingencies between conditioned stimuli (CS) and unconditioned stimuli after fear acquisition. The participants were then randomly assigned to 1 of the 3 groups and received either yohimbine (10 mg, n = 17), sulpiride (200 mg, n = 16), or placebo (n = 18) between fear acquisition and extinction. Recall of conditioned (non-extinguished CS+ vs CS-) and extinguished fear (extinguished CS+ vs CS-) was assessed 1 day later, and a 64-channel electroencephalogram was recorded. RESULTS The yohimbine group showed increased salivary alpha-amylase activity, confirming a successful manipulation of central noradrenergic release. Elevated fear-conditioned bradycardia and larger differential amplitudes of the N170 and late positive potential components in the event-related brain potential indicated that yohimbine treatment (compared with a placebo and sulpiride) enhanced fear recall during day 2. CONCLUSIONS These results suggest that yohimbine potentiates cardiac and central electrophysiological signatures of fear memory consolidation. They thereby elucidate the key role of noradrenaline in strengthening the consolidation of conditioned fear associations, which may be a key mechanism in the etiology of fear-related disorders.
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Affiliation(s)
- Matthias F J Sperl
- Correspondence: Matthias F. J. Sperl, Justus Liebig University Giessen, Department of Psychology, Otto-Behaghel-Str. 10F, 35394 Giessen, Germany ()
| | - Christian Panitz
- Department of Psychology, Personality Psychology and Assessment, University of Marburg, Marburg, Germany,Department of Psychology, Experimental Psychology and Methods, University of Leipzig, Leipzig, Germany,Center for the Study of Emotion and Attention, University of Florida, Gainesville, Florida, USA
| | - Nadine Skoluda
- Department of Clinical and Health Psychology, University of Vienna, Vienna, Austria
| | - Urs M Nater
- Department of Clinical and Health Psychology, University of Vienna, Vienna, Austria
| | - Diego A Pizzagalli
- Department of Psychiatry, Harvard Medical School, & Center for Depression, Anxiety and Stress Research, McLean Hospital, Belmont, Massachusetts, USA
| | - Christiane Hermann
- Department of Psychology, Clinical Psychology and Psychotherapy, University of Giessen, Giessen, Germany
| | - Erik M Mueller
- Department of Psychology, Personality Psychology and Assessment, University of Marburg, Marburg, Germany
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6
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Oberhaus EL, Wilson KM, Camp CM, Sones JL. Sucrose acetate isobutyrate (SAIB) as a delivery vehicle for estradiol and sulpiride: Evaluation of endocrine responses in geldings and ovarian response in seasonally anovulatory mares. J Equine Vet Sci 2022;:103896. [PMID: 35150853 DOI: 10.1016/j.jevs.2022.103896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 02/03/2022] [Accepted: 02/07/2022] [Indexed: 11/24/2022]
Abstract
Sulpiride in vegetable shortening (VS) stimulates prolactin in horses for up to 10 days. Although effective, a pharmaceutical grade vehicle is needed for clinical application of sulpiride in horses. Sucrose acetate isobutyrate (SAIB), a hydrophobic polymer, may be an alternative to VS. Four in vivo experiments assessed the efficacy of SAIB for delivery of sulpiride, estradiol cypionate (ECP), and estradiol benzoate (EB). The first three studies utilized geldings to compare prolactin and luteinizing hormone (LH) concentrations between sulpiride delivered in VS and SAIB, and ECP or EB delivered in SAIB. Sulpiride stimulated (P < .01) prolactin similarly between vehicles. Geldings pre-treated with EB had higher (P < .05) prolactin responses to sulpiride compared to ECP-treated geldings on days 5, 6 and 9. Both estradiol-sulpiride treatments stimulated LH with no differences between ECP and EB. Experiment 3 compared a simultaneous injection of EB-sulpiride to a non-simultaneous injection (one day apart) of EB-sulpiride. Prolactin was stimulated (P < .05) in both treatment groups, but the response lasted 2 days longer in geldings treated a day apart. Plasma LH increased (P < .01) in both groups equally for 10 days. Experiment 4 applied simultaneous and non-simultaneous EB-sulpiride treatments to seasonally anovulatory mares to induce ovarian activity. Prolactin and LH were stimulated similarly between treatments; however, non-simultaneously treated mares tended (P = .07) to have an ovarian response earlier. In conclusion, SAIB was a suitable vehicle for administration of estradiol and sulpiride and could be an alternative to VS for sustained-release drug delivery.
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7
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Mohamad SA, Safwat MA, Elrehany M, Maher SA, Badawi AM, Mansour HF. A novel nasal co-loaded loratadine and sulpiride nanoemulsion with improved downregulation of TNF-α, TGF-β and IL-1 in rabbit models of ovalbumin-induced allergic rhinitis. Drug Deliv 2021; 28:229-239. [PMID: 33501873 PMCID: PMC7850330 DOI: 10.1080/10717544.2021.1872741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 01/01/2021] [Accepted: 01/04/2021] [Indexed: 10/28/2022] Open
Abstract
PURPOSE The work aimed to develop a co-loaded loratadine and sulpiride nasal nanoemulsion for allergic rhinitis management. METHODS Compatibility studies were conducted adopting differential scanning calorimetry and Fourier transform infrared spectroscopy. Nanoemulsion formulations were prepared using soybean lecithin, olive oil and tween 80. Sodium cholate and glycerol were employed as co-surfactants. Nanoemulsions were assessed for viscosity, pH, droplet size, polydispersity index, zeta potential, electrical conductivity, entrapment, In vitro drug release and corresponding kinetics. Stability of the selected formulation was investigated. The biological effectiveness was evaluated in rabbit models of ovalbumin-induced allergic rhinitis by measuring TNF-α, TGF-β and IL-1. RESULTS Compatibility studies revealed absence of drug/drug interactions. Nanoemulsions exhibited > 90% entrapment efficiency. The selected nanoemulsion demonstrated small droplet size (85.2 ± 0.2 nm), low PDI (0.35 ± 0.0) and appropriate Zeta Potential (-23.3 ± 0.2) and stability. It also displayed enhanced in vitro drug release following the Higuashi Diffusion and Baker-Lonsdale models. The mean relative mRNA expression of TNF-α, IL-1 and TGF-β significantly decreased from 9.59 ± 1.06, 4.15 ± 0.02 and 4.15 ± 0.02 to 1.28 ± 0.02, 1.93 ± 0.06 and 1.56 ± 0.02 respectively after treatment with the selected nanoemulsion formulation. CONCLUSION The results reflected a promising potent effect of the combined loratadine and sulpiride nasal nanoemulsion in managing the symptoms of allergic rhinitis.
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Affiliation(s)
- Soad A. Mohamad
- Department of Pharmaceutics, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Mohamed A. Safwat
- Department of Pharmaceutics, Faculty of Pharmacy, South Valley University, Qena, Egypt
| | - Mahmoud Elrehany
- Department of Biochemistry, Faculty of Pharmacy, Deraya University, Minia, Egypt
- Department of Biochemistry, Faculty of Medicine, Minia University, Minia, Egypt
| | - Sherif A. Maher
- Department of Biochemistry, Faculty of Pharmacy, Deraya University, Minia, Egypt
| | - Ahmed M. Badawi
- Department of Otorhinolaryngology, Faculty of Medicine, Minia University, Minia, Egypt
| | - Heba F. Mansour
- Department of Pharmaceutics, Faculty of Pharmacy, Minia University, Minia, Egypt
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8
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Besag FM, Vasey MJ, Lao KS, Chowdhury U, Stern JS. Pharmacological treatment for Tourette syndrome in children and adults: What is the quality of the evidence? A systematic review. J Psychopharmacol 2021; 35:1037-1061. [PMID: 34286606 DOI: 10.1177/02698811211032445] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Tourette syndrome (TS) is a neurodevelopmental disorder characterised by involuntary muscle movements manifesting as motor and vocal tics. In the majority, tics are manageable without medication. Where tics cause discomfort or impair function, behavioural or pharmaceutical treatments may be considered. AIMS To provide a meticulous examination of the quality of evidence for the current pharmacological treatments for TS. METHODS PubMed and Google Scholar were searched to identify randomised, placebo-controlled trials (RCTs) of aripiprazole, risperidone, clonidine, guanfacine, haloperidol, pimozide, tiapride and sulpiride for the treatment of tics in children and adults with TS. Quality of reporting and risk of bias were assessed against the CONSORT checklist and Cochrane risk of bias criteria, respectively. RESULTS Seventeen RCTs were identified. Response rates reached 88.6% for aripiprazole, 68.9% for clonidine, 62.5% for risperidone and 19% for guanfacine. Statistically significant improvements were reported for all medications compared to placebo in at least one study and for at least one measure of tic severity. Most studies predated the CONSORT and Cochrane criteria and did not score highly when assessed on these measures. CONCLUSIONS There are relatively few placebo-controlled trials of commonly prescribed medications. Studies are often of poor quality and short duration. There is evidence for the efficacy of each medication, but no drug is clearly superior. Clonidine and guanfacine are better tolerated than antipsychotics, but less effective. There is too little evidence to determine whether adults respond differently from children.
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Affiliation(s)
- Frank Mc Besag
- East London NHS Foundation Trust, Bedford, UK.,University College London, London, UK.,King's College London, UK
| | | | - Kim Sj Lao
- Department of Pharmacology and Pharmacy, The University of Hong Kong, Hong Kong
| | - Uttom Chowdhury
- Child and Adolescent Mental Health Services, East London NHS Foundation Trust, Dunstable, Bedfordshire, UK
| | - Jeremy S Stern
- St George's Hospital Neurology, London, UK.,Tourettes Action, Farnborough, Hampshire, UK
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Mohyeldin SM, Samy WM, Ragab D, Abdelmonsif DA, Aly RG, Elgindy NA. Precisely Fabricated Sulpiride-Loaded Nanolipospheres with Ameliorated Oral Bioavailability and Antidepressant Activity. Int J Nanomedicine 2021; 16:2013-2044. [PMID: 33727812 PMCID: PMC7955741 DOI: 10.2147/ijn.s296726] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 01/28/2021] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Sulpiride (SUL), is a selective antidopaminergic drug that had extensive biological activities. However, its sparingly aqueous solubility and limited gastrointestinal permeability lead to scanty oral bioavailability which hinders its clinical efficacy. OBJECTIVE SUL-loaded lipospheres (SUL-LPS) were designed to serve as an oral biocompatible nanovector for improving SUL permeability as well as conquering its low oral absorption and then in turn enhancing its antidepressant action. METHODS SUL-LPS were fabricated via two processing techniques namely, melt emulsification and solvent evaporation. The impact of different lipid cores, phospholipid shells together with various surfactant concentrations and types on the lipospheres properties were screened. Detailed physicochemical elucidations were performed followed by ex vivo permeation appraisal using the non-everted intestine model. The pharmacokinetic parameters of SUL-LPS, free SUL and marketed product were assessed following oral administration to healthy rats. Reserpine-induced depression rat model was used to assess the antidepressant action of SUL-LPS on which full behavioural and biochemical analysis was conducted. Safety attributes of nanoencapsulated SUL on the brain and other internal organs were evaluated. RESULTS The optimum LPS revealed an excellent nanosize with a narrow PdI, negative zeta potential and acceptable entrapment efficiency of 68.62 nm, 0.242, -30.4 mV and 84.12%, respectively. SUL-LPS showed a sustained release pattern and 2.1-fold enhancement in the intestinal permeation parameters with low mucin interaction. Oral pharmacokinetic appraisal exhibited that LPS provided 3.4-fold improvement in SUL oral bioavailability together with long-circulating properties, relative to the free drug. Pharmacodynamic study confirmed the superior antidepressant action of SUL-LPS as evident by 1.6 and 1.25-fold elevation in the serotonin and dopamine expressions, respectively. Meanwhile, nanotoxicological appraisal proved the biocompatibility of SUL-LPS upon repetitive oral administration. CONCLUSION Rationally designed lipospheres hold promising in vitro and in vivo characteristics for efficient delivery of SUL with high oral bioavailability, antidepressant activity together with a good safety profile.
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Affiliation(s)
- Salma M Mohyeldin
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Wael M Samy
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Doaa Ragab
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
| | - Doaa A Abdelmonsif
- Department of Medical Biochemistry, Faculty of Medicine, Alexandria University, Alexandria, Egypt
- Centre of Excellence for Research in Regenerative Medicine and Applications, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Rania G Aly
- Department of Surgical Pathology, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Nazik A Elgindy
- Department of Industrial Pharmacy, Faculty of Pharmacy, Alexandria University, Alexandria, Egypt
- Department of Industrial Pharmacy, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt
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10
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Mukhtar I, Anwar H, Mirza OA, Ali Q, Ijaz MU, Hume M, Prabhala BK, Iftikhar A, Hussain G, Sohail MU, Khan KUR. Sulpiride Serves, a Substrate for the Gut Microbiome. Dose Response 2021; 19:1559325820987943. [PMID: 33628152 PMCID: PMC7882762 DOI: 10.1177/1559325820987943] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/14/2020] [Accepted: 12/23/2020] [Indexed: 01/08/2023] Open
Abstract
In the contemporary research world, the intestinal microbiome is now envisioned as a new body organ. Recently, the gut microbiome represents a new drug target in the gut, since various orthologues of intestinal drug transporters are also found present in the microbiome that lines the small intestine of the host. Owing to this, absorbance of sulpiride by the gut microbiome in an in vivo albino rats model was assessed after the oral administration with a single dose of 20mg/kg b.w. The rats were subsequently sacrificed at 2, 3, 4, 5 and 6 hours post oral administration to collect the gut microbial mass pellet. The drug absorbance by the gut microbiome was determined by pursuing the microbial lysate through RP-HPLC-UV. Total absorbance of sulpiride by the whole gut microbiome and drug absorbance per milligram of microbial pellet were found significantly higher at 4 hours post-administration as compared to all other groups. These results affirm the hypothesis that the structural homology between membrane transporters of the gut microbiome and intestinal epithelium of the host might play an important role in drug absorbance by gut microbes in an in vivo condition.
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Affiliation(s)
- Imran Mukhtar
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - Haseeb Anwar
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - Osman Asghar Mirza
- Department of Drug Design and Pharmacology, University of Copenhagen, Denmark
| | - Qasim Ali
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Muhammad Umar Ijaz
- Department of Zoology, Wildlife and Fisheries, University of Agriculture, Faisalabad, Pakistan
| | - Michael Hume
- United States Department of Agriculture, College Station, TX, USA
| | - Bala Krishna Prabhala
- Institute of Physics, Chemistry and Pharmacy, University of Southern Denmark, Odense, Denmark
| | - Arslan Iftikhar
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
| | - Ghulam Hussain
- Department of Physiology, Faculty of Life Sciences, Government College University, Faisalabad, Pakistan
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11
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M Tawfeek H, Hassan YA, Aldawsari MF, H Fayed M. Enhancing the Low Oral Bioavailability of Sulpiride via Fast Orally Disintegrating Tablets: Formulation, Optimization and In Vivo Characterization. Pharmaceuticals (Basel) 2020; 13:E446. [PMID: 33291402 DOI: 10.3390/ph13120446] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Revised: 12/01/2020] [Accepted: 12/02/2020] [Indexed: 01/15/2023] Open
Abstract
Sulpiride (SUL) is a dopamine D2-receptor antagonist used for management of GIT disturbance and it has anti-psychotic activities based on the administered dose. SUL undergoes P-glycoprotein efflux, which lead to poor bioavailability and erratic absorption. Therefore, the objective of this research was an attempt to enhance the oral bioavailability of SUL via formulation of fast disintegrating tablets (SUL-FDTs) with a rapid onset of action. A 32 full-factorial design was performed for optimization of SUL-FDTs using desirability function. The concentration of superdisintegrant (X1) and Prosolv® (X2) were selected as independent formulation variables for the preparation and optimization of SUL-FDTs using direct compression technique. The prepared SUL-FDTs were investigated regarding their mechanical strength, disintegration time, drug release and in vivo pharmacokinetic analysis in rabbits. The optimized formulation has hardness of 4.58 ± 0.52 KP, friability of 0.73 ± 0.158%, disintegration time of 37.5 ± 1.87 s and drug release of 100.51 ± 1.34% after 30 min. In addition, the optimized SUL-FDTs showed a significant (p < 0.01) increase in Cmax and AUC(0-∞) and a relative bioavailability of about 9.3 fold compared to the commercial product. It could be concluded that SUL-FDTs are a promising formulation for enhancing the oral bioavailability of SUL concomitant with a fast action.
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12
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Zonneveld S, Gawi A, Wilms EB, van Vliet P, Westerman EM. Sulpiride intoxication: Case report of a rare intoxication. Basic Clin Pharmacol Toxicol 2020; 128:628-631. [PMID: 33128344 DOI: 10.1111/bcpt.13526] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/30/2020] [Accepted: 10/23/2020] [Indexed: 11/27/2022]
Abstract
Intoxications with sulpiride, an antipsychotic, are rare, and only limited literature is available. We describe a successful treatment of a sulpiride intoxication. A 67-year-old female, with a history of intentional suicide attempt, was admitted to the emergency department (ED) because of a suspected out-of-hospital cardiac arrest. At presentation, she was haemodynamically unstable, with a Glasgow Coma Scale of 3 and slight prolongation of QTc time. History taken from her husband raised suspicion of a suicide attempt with medication. Consultation of the on-call pharmacist and performance of a toxicology screening accelerated the diagnosis of a sulpiride intoxication. The patient was intubated because of respiratory insufficiency, admitted to the Intensive Care Unit (ICU) and treated with activated charcoal, laxatives and sodium bicarbonate. The following day, she was extubated with stable haemodynamics and a normalized ECG. Treatment of sulpiride intoxications is mainly symptomatic and consists of supportive care. An important note is the avoidance of antiarrhythmic drugs, except for lidocaine, epinephrine and dopamine, as they might worsen arrhythmia and hypotension.
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Affiliation(s)
- Svenja Zonneveld
- Department of clinical pharmacy, Haaglanden Medical Centre, The Hague, The Netherlands
| | - Adina Gawi
- Department of intensive care medicine, Haaglanden Medical Centre, The Hague, The Netherlands
| | - Erik B Wilms
- Laboratory, Apotheek Haagse Ziekenhuizen, The Hague, The Netherlands
| | - Peter van Vliet
- Department of intensive care medicine, Haaglanden Medical Centre, The Hague, The Netherlands
| | - Elsbeth M Westerman
- Department of clinical pharmacy, Haaglanden Medical Centre, The Hague, The Netherlands
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13
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Leonard EM, Nurse CA. Expanding Role of Dopaminergic Inhibition in Hypercapnic Responses of Cultured Rat Carotid Body Cells: Involvement of Type II Glial Cells. Int J Mol Sci 2020; 21:ijms21155434. [PMID: 32751703 PMCID: PMC7432366 DOI: 10.3390/ijms21155434] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/20/2020] [Accepted: 07/26/2020] [Indexed: 12/31/2022] Open
Abstract
Dopamine (DA) is a well-studied neurochemical in the mammalian carotid body (CB), a chemosensory organ involved in O2 and CO2/H+ homeostasis. DA released from receptor (type I) cells during chemostimulation is predominantly inhibitory, acting via pre- and post-synaptic dopamine D2 receptors (D2R) on type I cells and afferent (petrosal) terminals respectively. By contrast, co-released ATP is excitatory at postsynaptic P2X2/3R, though paracrine P2Y2R activation of neighboring glial-like type II cells may boost further ATP release. Here, we tested the hypothesis that DA may also inhibit type II cell function. When applied alone, DA (10 μM) had negligible effects on basal [Ca2+]i in isolated rat type II cells. However, DA strongly inhibited [Ca2+]i elevations (Δ[Ca2+]i) evoked by the P2Y2R agonist UTP (100 μM), an effect opposed by the D2/3R antagonist, sulpiride (1-10 μM). As expected, acute hypercapnia (10% CO2; pH 7.4), or high K+ (30 mM) caused Δ[Ca2+]i in type I cells. However, these stimuli sometimes triggered a secondary, delayed Δ[Ca2+]i in nearby type II cells, attributable to crosstalk involving ATP-P2Y2R interactions. Interestingly sulpiride, or DA store-depletion using reserpine, potentiated both the frequency and magnitude of the secondary Δ[Ca2+]i in type II cells. In functional CB-petrosal neuron cocultures, sulpiride potentiated hypercapnia-induced Δ[Ca2+]i in type I cells, type II cells, and petrosal neurons. Moreover, stimulation of type II cells with UTP could directly evoke Δ[Ca2+]i in nearby petrosal neurons. Thus, dopaminergic inhibition of purinergic signalling in type II cells may help control the integrated sensory output of the CB during hypercapnia.
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Affiliation(s)
- Erin M. Leonard
- Correspondence: ; Tel.: +1-905-525-9140 (ext. 23178); Fax: +1-905-522-6066
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Nizomov SA, Sorokina IV, Zhukova NA, Borisov SA, Tolstikova TG, Semenov DE, Bakarev MA. Prostatotropic Action of Glycyrrhizic Acid Disodium Salt in Benign Prostatic Hyperplasia Models. Bull Exp Biol Med 2020; 169:114-118. [PMID: 32488776 DOI: 10.1007/s10517-020-04836-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Indexed: 11/26/2022]
Abstract
The prostatotropic activity of glycyrrhizic acid disodium salt (Na2GA) was studied in the models of benign prostatic hyperplasia (BPH) induced by chronic injection of sulpiride (40 mg/kg intraperitoneally for 8 weeks) or testosterone propionate (20 mg/kg subcutaneously for 4 weeks) in the Wistar rats. The oral administration of Na2GA in a dose of 100 mg/kg produced a moderate antiproliferative effect in both BPH models resulting in reduced volume density of prostatic epithelium (in the testosterone model) and increased volume density of the glandular lumen (in both models). The observed prostatotropic effects of Na2GA were similar to those of Permixon and finasteride, but they were less pronounced as confirmed by smaller drops in epithelial volume density and epithelial-to-stromal ratio compared to the effects of both reference drugs.
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Affiliation(s)
- S A Nizomov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - I V Sorokina
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia.
| | - N A Zhukova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - S A Borisov
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - T G Tolstikova
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Division of Russian Academy of Sciences, Novosibirsk, Russia
| | - D E Semenov
- Institute of Molecular Pathology and Pathomorphology, Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russia
| | - M A Bakarev
- Institute of Molecular Pathology and Pathomorphology, Federal Research Center for Fundamental and Translational Medicine, Novosibirsk, Russia
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15
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Zheng C, Luo Y, Chen Y, Chen D, Shao C, Huang D, Zhu J, Mao X, Li L, Sun Z. Oral exposure of sulpiride promotes the proliferation of Brown-Norway rat prostates. Exp Ther Med 2020; 19:2551-2562. [PMID: 32256734 PMCID: PMC7086227 DOI: 10.3892/etm.2020.8521] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/22/2018] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to establish an animal model of prostatic hyperplasia to explore the mechanisms of this disease. Sulpiride, a specific type 2 dopamine receptor antagonist, causes prostate toxicity by stimulating prolactin (PRL) production. Male Brown-Norway (BN) rats were treated intragastrically (i.g.) with sulpiride (40 and 120 mg/kg daily) and vehicle (i.g., daily) for 4 weeks. The results demonstrated that sulpiride-treatment resulted in increased prostate size, prostate lobe weight, epithelial height and acinar luminal area. Furthermore, prostate lobe weight, epithelial height and acinar luminal area of lateral lobes (LP) significantly increased. These effects were dose dependent. Sulpiride treatment increased serum PRL, follicle-stimulating hormone and testosterone levels, while serum luteinizing hormone levels were reduced. Immunohistochemical analysis revealed that proliferating cell nuclear antigen and B-cell lymphoma-2 were significantly increased in certain sulpiride treated groups. Furthermore, estrogen receptor (ER)-α and androgen receptors were upregulated, while ERβ was downregulated in LP. The expression of stromal cell biomarkers, including vimentin, fibronectin and α-smooth muscle actin were significantly increased in LP following 40 mg/kg sulpiride administration. These results suggest that sulpiride causes LP hyperplasia in BN rats by promoting proliferation and inhibiting prostate cell apoptosis via ERα and AR signaling.
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Affiliation(s)
- Chengcheng Zheng
- School of Pharmacy, Fudan University, Shanghai 200433, P.R. China.,National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Yongwei Luo
- School of Pharmacy, Fudan University, Shanghai 200433, P.R. China.,National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Ying Chen
- National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Dingshi Chen
- National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Congcong Shao
- National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Dongyan Huang
- National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Jing Zhu
- National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Xiaoyan Mao
- National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Lei Li
- National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Population and Family Planning Key Laboratory of Contraceptive Drugs and Devices, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
| | - Zuyue Sun
- School of Pharmacy, Fudan University, Shanghai 200433, P.R. China.,National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China.,National Evaluation Centre for The Toxicology of Fertility Regulating Drugs, Shanghai Institute of Planned Parenthood Research, Shanghai 200032, P.R. China
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16
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Asad N, McLain DE, Condon AF, Gore S, Hampton SE, Vijay S, Williams JT, Dore TM. Photoactivatable Dopamine and Sulpiride to Explore the Function of Dopaminergic Neurons and Circuits. ACS Chem Neurosci 2020; 11:939-951. [PMID: 32077679 PMCID: PMC7101055 DOI: 10.1021/acschemneuro.9b00675] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Kinetic analysis of dopamine receptor activation and inactivation and the study of dopamine-dependent signaling requires precise simulation of the presynaptic release of the neurotransmitter dopamine and tight temporal control over the release of dopamine receptor antagonists. The 8-cyano-7-hydroxyquinolinyl (CyHQ) photoremovable protecting group was conjugated to dopamine and the dopamine receptor antagonist sulpiride to generate "caged" versions of these neuromodulators (CyHQ-O-DA and CyHQ-sulpiride, respectively) that could release their payloads with 365 or 405 nm light or through 2-photon excitation (2PE) at 740 nm. These compounds are stable under physiological conditions in the dark, yet photolyze rapidly and cleanly to yield dopamine or sulpiride and the caging remnant CyHQ-OH. CyHQ-O-DA mediated the light activation of dopamine-1 (D1) receptors on the breast cancer cell line MDA-MB-231 in culture. In mouse brain slice from the substantia nigra pars compacta, localized flash photolysis of CyHQ-O-DA accurately mimicked the natural presynaptic release of dopamine and activation of dopamine-2 (D2) receptors, causing a robust, concentration-dependent, and repeatable G protein-coupled inwardly rectifying potassium channel-mediated outward current in whole-cell voltage clamp recordings that was amplified by cocaine and blocked by sulpiride. Photolysis of CyHQ-sulpiride rapidly blocked synaptic activity, enabling measurement of the unbinding rates of dopamine and quinpirole, a D2 receptor agonist. These tools will enable more detailed study of dopamine receptors, their interactions with other GPCRs, and the physiology of dopamine signaling in the brain.
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Affiliation(s)
- Naeem Asad
- New York University Abu Dhabi, Saadiyat Island, PO Box 129188, Abu Dhabi, United Arab Emirates
| | - Duncan E. McLain
- New York University Abu Dhabi, Saadiyat Island, PO Box 129188, Abu Dhabi, United Arab Emirates
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
| | - Alec F. Condon
- Vollum Institute, Oregon Health and Science University, Portland, Oregon 97239, United States
| | - Sangram Gore
- New York University Abu Dhabi, Saadiyat Island, PO Box 129188, Abu Dhabi, United Arab Emirates
| | - Shahienaz E. Hampton
- New York University Abu Dhabi, Saadiyat Island, PO Box 129188, Abu Dhabi, United Arab Emirates
| | - Sauparnika Vijay
- New York University Abu Dhabi, Saadiyat Island, PO Box 129188, Abu Dhabi, United Arab Emirates
| | - John T. Williams
- Vollum Institute, Oregon Health and Science University, Portland, Oregon 97239, United States
| | - Timothy M. Dore
- New York University Abu Dhabi, Saadiyat Island, PO Box 129188, Abu Dhabi, United Arab Emirates
- Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States
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17
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Borba CM, Ferreira CF, Ferreira FV, Pérez-López FR, Wender MCO. Effect of sulpiride on menopausal hot flashes: a randomized, double-blind, placebo-controlled clinical trial. Gynecol Endocrinol 2020; 36:247-251. [PMID: 31476924 DOI: 10.1080/09513590.2019.1658189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
Low doses of sulpiride have been used off-label to treat menopausal hot slashes in Southern Brazil despite limited scientific evidence. This randomized controlled trial aimed at assessing the effects of sulpiride as compared to placebo on the frequency and severity of hot flashes. Postmenopausal women, aged 47-62, were recruited from the Menopause Clinic at Hospital de Clínicas de Porto Alegre, Rio Grande do Sul, Brazil, between March 2016 and January 2017. After a baseline assessment of 4 weeks, women were included if they had at least a mean of five moderate to severe hot flashes per day and then randomized to receive for 8 weeks either placebo (n= 14) or sulpiride 50 mg/d (n= 14). The number and severity of hot flashes were evaluated after the 8-week intervention. A generalized estimating equations (GEE) model with Bonferroni correction was used to simultaneously assess the frequency and severity of hot flashes. Baseline frequency and severity of hot flashes/day were similar in both groups. Sulpiride significantly reduced the total weekly mean of hot flash frequency (GEE, pinteraction=.019) and the total weekly mean of severity scores (GEE, pinteraction=.09, pgroup=.006, ptime≤.0001) after 4 and 8 weeks of treatment. Treatment with sulpiride 50 mg/d significantly reduced the frequency and severity of hot flashes. Further studies are needed to confirm its benefits and related mechanisms of action.
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Affiliation(s)
- Clarissa Moreira Borba
- Programa de Pós-Graduação em Ciências da Saúde: Ginecologia e Obstetrícia, Grupo de Pesquisa: Climatério e Menopausa, Serviço de Ginecologia e Obstetrícia, Hospital de Clínicas de Porto Alegre, Faculdade de Medicina, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brasil
| | - Charles Francisco Ferreira
- Programa de Pós-Graduação em Ciências da Saúde: Ginecologia e Obstetrícia, Grupo de Pesquisa: Climatério e Menopausa, Serviço de Ginecologia e Obstetrícia, Hospital de Clínicas de Porto Alegre, Faculdade de Medicina, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brasil
| | - Fernanda Vargas Ferreira
- Programa de Pós-Graduação em Ciências da Saúde: Ginecologia e Obstetrícia, Grupo de Pesquisa: Climatério e Menopausa, Serviço de Ginecologia e Obstetrícia, Hospital de Clínicas de Porto Alegre, Faculdade de Medicina, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brasil
| | - Faustino R Pérez-López
- Department of Obstetrics and Gynecology, Faculty of Medicine, Aragón Health Research Institute, University of Zaragoza, Zaragoza, Spain
| | - Maria Celeste Osório Wender
- Programa de Pós-Graduação em Ciências da Saúde: Ginecologia e Obstetrícia, Grupo de Pesquisa: Climatério e Menopausa, Serviço de Ginecologia e Obstetrícia, Hospital de Clínicas de Porto Alegre, Faculdade de Medicina, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brasil
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18
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Wei CY, Tzeng IS, Lin MC, Yeh YH, Hsu CY, Kung WM. Risks of Sulpiride-Induced Parkinsonism in Peptic Ulcer and Gastroesophageal Reflux Disease Patients in Taiwan: A Nationwide Population-Based Study. Front Pharmacol 2020; 11:433. [PMID: 32390831 PMCID: PMC7193075 DOI: 10.3389/fphar.2020.00433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2019] [Accepted: 03/20/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Sulpiride is a highly selective dopamine D2 receptor antagonist and is commonly used in psychiatric disorders, Tourette syndrome, peptic ulcer disease (PUD), and gastroesophageal reflux disease (GERD). However, sulpiride has been recognized as a potential cause of drug-induced parkinsonism (DIP) for a long time. In this study, we aimed to focus on analysis of sulpiride-induced parkinsonism (SIP) in PUD and GERD patients based on a nationwide population. METHODS Data were obtained from the Taiwan's National Health Insurance Research Database. The study enrolled 5,275 PUD or GERD patients, of whom were divided into two groups, based on their exposure (1,055 cases) or non-exposure (4,220 cases) to sulpiride. RESULTS During the study period (2000-2012), the incidence rate of parkinsonism was 261.5 and 762.2 per 100,000 person-years in the control and sulpiride-treated groups, respectively. For patients with at least 14 days of prescription for sulpiride, the adjusted hazard ratio (aHR) was 2.89, 95% confidence interval (CI): 2.04-4.11. Patients with age more than 65 years (aHR = 4.99, 95% CI = 2.58-9.65), hypertension (aHR = 2.39, 95% CI = 1.49-3.82), depression (aHR = 2.00, 95% CI = 1.38-2.91), and anxiety (aHR = 1.45, 95% CI = 1.01-2.09) had significant higher risk of developing parkinsonism. An average annual cumulative sulpiride dose > 1,103 mg was accompanied by the greatest risk of SIP; sulpiride use for ≥ 9 days is a cut-off point for predicting future SIP. CONCLUSION At the population level, sulpiride may be frequently prescribed and apparently effective for PUD and GERD. SIP is associated with older age, hypertension, depression or anxiety comorbidities. Physicians should be aware of the neurogenic adverse effects, even when the drug is only used in low-dose or a short duration.
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Affiliation(s)
- Cheng-Yu Wei
- Department of Neurology, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan
- Department of Exercise and Health Promotion, College of Education, Chinese Culture University, Taipei, Taiwan
| | - I-Shiang Tzeng
- Department of Exercise and Health Promotion, College of Education, Chinese Culture University, Taipei, Taiwan
| | - Mei-Chen Lin
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
| | - Yung-Hsiang Yeh
- Digestive Disease Center, Chang Bing Show Chwan Memorial Hospital, Changhua County, Taiwan
| | - Chung Y. Hsu
- Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan
| | - Woon-Man Kung
- Department of Exercise and Health Promotion, College of Education, Chinese Culture University, Taipei, Taiwan
- *Correspondence: Woon-Man Kung,
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Yao QY, Li J, Chen R, Yao Y, Xue JS, Chen WJ, Lu W, Zhou TY. Preclinical PK/PD model for the combinatorial use of dexamethasone and sulpiride in the treatment of breast cancer. Acta Pharmacol Sin 2019; 40:1596-1602. [PMID: 31165782 PMCID: PMC7470835 DOI: 10.1038/s41401-019-0251-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 05/12/2019] [Indexed: 01/09/2023] Open
Abstract
Previous studies show that dopamine D2-like receptor (D2DR) antagonist sulpiride (SUL) enhances the antitumor efficacy of dexamethasone (DEX) in drug-resistant breast cancer involving cancer stem-like cells (CSCs). In this study, we investigated the pharmacokinetic (PK) properties of SUL in nude mice and developed a semi-mechanism PK/PD model to quantitatively characterize the synergistic effect of DEX and SUL in preclinical breast cancer xenografts. After nude mice received oral administration of a single dose of SUL (50 mg/kg, ig), plasma concentrations were assessed using LC-MS/MS. A two-compartment model with double first-order absorption rate was developed to describe the PK profiles of SUL. The pharmacodynamic (PD) study was conducted in nude mice bearing human breast cancer MCF-7/Adr xenografts, which received oral administration of DEX (1, 8 mg·kg−1·d−1) or SUL (25, 50 mg·kg−1·d−1) alone or in various combination. Tumor volumes were measured every other day. The PK model of SUL as well as that of DEX with a time-dependent clearance were integrated into the final PK/PD model both using Hill’s function, where DEX exerted its antitumor efficacy by inhibiting the proliferation of tumor cells, and SUL enhanced DEX responses by decreasing the sensitivity parameter EC50. The PK/PD model was evaluated and subjected external validation. Finally, simulations were performed to predict the antitumor efficacy of DEX combined with SUL under various dose regimens, where changing dosing frequency of SUL had little effect, while the antitumor efficacy was predicted to be improved when DEX was given more frequently. The established PK/PD model in this study quantitatively characterizes the antitumor efficacy of the DEX combined with SUL as well as their synergism, and the simulations could provide reference for dose optimization of the combination in future studies.
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Nizomov SA, Sorokina IV, Zhukova NA, Tolstikova TG, Semenov DE, Prosenko AE. Morphological Assessment of Prostatotropic Activity of (3,5-Dimethyl-4-Hydroxy)Benzyl Thiododecane on a Model of Benign Prostatic Hyperplasia in Rats. Bull Exp Biol Med 2019; 167:809-812. [PMID: 31656010 DOI: 10.1007/s10517-019-04628-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Indexed: 11/30/2022]
Abstract
Prostatotropic activity of (3,5-dimethyl-4-hydroxy)benzyl thiododecane (T-DD) was evaluated on a model of benign prostatic hyperplasia induced in Wistar rats by chronic (2 months) intraperitoneal administration of sulpiride (40 mg/kg). Morphometric analysis of the dorsolateral lobe of the prostate showed that after the 2-month course of intragastric T-DD (100 mg/kg) administered in parallel with sulpiride, the volume density of glandular epithelium decreased by 1.7 times, while the volume density of prostate stroma increased by 2 times. After administration of the reference drug Permixon at a dose of 50 mg/kg, the volume densities of epithelium decreased by 1.3 times and stromal volume density increased by 1.5 times. The observed effects are presumably related to suppression of 5α-reductase activity and modulation of estrogen receptors in the prostate.
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Affiliation(s)
- S A Nizomov
- N. N. Vorozhtsov Novosibirsk Institute of Organic and Physical Chemistry, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - I V Sorokina
- N. N. Vorozhtsov Novosibirsk Institute of Organic and Physical Chemistry, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia.
| | - N A Zhukova
- N. N. Vorozhtsov Novosibirsk Institute of Organic and Physical Chemistry, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - T G Tolstikova
- N. N. Vorozhtsov Novosibirsk Institute of Organic and Physical Chemistry, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia
| | - D E Semenov
- Institute of Molecular Pathology and Pathomorphology, Federal Research Center of Fundamental and Translational Medicine, Novosibirsk, Russia
| | - A E Prosenko
- Novosibirsk State Pedagogical University, Novosibirsk, Russia
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21
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Wuo-Silva R, Fukushiro-Lopes DF, Fialho BP, Hollais AW, Santos-Baldaia R, Marinho EAV, Mári-Kawamoto E, Yokoyama TS, Lopes-Silva LB, Berro LF, Frussa-Filho R, Longo BM. Participation of Dopamine D1 and D2 Receptors in the Rapid-Onset Behavioral Sensitization to Modafinil. Front Pharmacol 2019; 10:211. [PMID: 30914950 PMCID: PMC6421293 DOI: 10.3389/fphar.2019.00211] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2018] [Accepted: 02/19/2019] [Indexed: 11/13/2022] Open
Abstract
Studies on the abuse potential of modafinil, a psychostimulant-like drug used to treat narcolepsy, are still controversial. While some studies claim no potential for abuse, increasing evidence suggests that modafinil induces abuse-related effects, including rapid-onset behavioral sensitization (i.e., a type of sensitization that develops within hours from the drug priming administration). The rapid-onset sensitization paradigm is a valuable tool to study the neuroplastic changes that occur quickly after drug administration, and shares neuroadaptations with drug abuse in humans. However, the mechanisms involved in the rapid-onset behavioral sensitization induced by modafinil are uncertain. Our aim was to investigate the possible involvement of dopamine D1 and D2 receptors on acute modafinil-induced hyperlocomotion and on the induction and expression of rapid-onset behavioral sensitization induced by modafinil in male Swiss mice. Treatment with the D1 receptor antagonist SCH 23390 or the D2 receptor antagonist sulpiride attenuated the acute modafinil-induced hyperlocomotion in a dose-dependent manner. Pretreatment with either antagonist before the priming injection of modafinil prevented the development of sensitization in response to a modafinil challenge 4 h later. However, only SCH 23390 decreased the expression of modafinil-induced rapid-onset behavioral sensitization. Taken together, the present findings provide evidence of the participation of D1 and D2 receptors on the development of rapid-onset behavioral sensitization to modafinil, and point to a prominent role of D1 receptors on the expression of this phenomenon.
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Affiliation(s)
- Raphael Wuo-Silva
- Laboratory of Neurophysiology, Department of Physiology, Universidade Federal de São Paulo, São Paulo, Brazil.,Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Bruno P Fialho
- Laboratory of Neurophysiology, Department of Physiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - André W Hollais
- Laboratory of Neurophysiology, Department of Physiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Renan Santos-Baldaia
- Laboratory of Neurophysiology, Department of Physiology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Eduardo A V Marinho
- Department of Health Sciences, Universidade Estadual de Santa Cruz, Ilhéus, Brazil
| | - Elisa Mári-Kawamoto
- Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Thaís S Yokoyama
- Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Laís F Berro
- Department of Psychiatry and Human Behavior, University of Mississippi Medical Center, Jackson, MS, United States
| | - Roberto Frussa-Filho
- Department of Pharmacology, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Beatriz M Longo
- Laboratory of Neurophysiology, Department of Physiology, Universidade Federal de São Paulo, São Paulo, Brazil
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Abstract
Drug-induced Parkinsonism is often reversible after withdrawal of the causative drug. Its clinical course, however, is not well understood, as the majority of cases are caused by drugs prescribed by departments outside of neurology. We reviewed 21 cases of drug-induced parkinsonism for several factors, including age, sex, causative drug and reason for prescription, department by which it was prescribed, and outcome. The age at onset ranged from 40 to 87 years, with an average Hoehn and Yahr Scale score of 4, indicating severe disability. Sulpiride was the most commonly observed causative drug (71.4%). All causative drugs were prescribed in non-neurological departments and over one half were prescribed in non-psychiatric departments; most were prescribed to treat depression or abdominal discomfort. Ten patients (48%) were previously diagnosed with a neuromuscular disease, including cerebrovascular diseases and Parkinson's disease. Recovery was observed in 15 cases (71%) after withdrawal of the causative drug, but lingering symptoms were observed in the remaining cases. It is suggested that physicians should be more cautious of Parkinsonian side effects when prescribing such drugs.
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Affiliation(s)
- Nobuko Shiraiwa
- Course of Neurology, Department of Health Sciences, Tsukuba University of Technology
| | - Akira Tamaoka
- Deparment of Neurology, Graduate School of Comprehensive Human Science, University of Tsukuba, Japan
| | - Norio Ohkoshi
- Course of Neurology, Department of Health Sciences, Tsukuba University of Technology
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23
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Abstract
More than 40 years of research and clinical practice have proven the effectiveness of dopamine receptor antagonists in the pharmacological treatment of tics. A blockade of the striatal dopamine-D2 receptors is mainly responsible for their tic-reducing effect. A broad spectrum of dopamine-modulating agents, such as typical and atypical antipsychotics, but also dopamine receptor agonists are used with an immanent discord between experts about which of them should be considered as first choice. The present Review outlines the state of the art on pharmacological treatment of tics with dopamine-modulating agents by giving an systematic overview of studies on their effectiveness and a critical discussion of their specific adverse effects. It is considered as an update of a previous review of our research group published in 2013. The Review closes with a description of the current resulting treatment recommendations including the results of a first published revised survey on European expert's prescription preferences. Based on the enormously growing evidence on its effectiveness and safety, aripiprazole currently seems to be the most promising agent in the pharmacological treatment of tics. Furthermore, benzamides (especially tiapride), which are commonly used in Europe, have proven their excellent effectiveness-tolerability profile over decades in clinical practice and are therefore also highly recommended for the treatment of tics. Nevertheless, pharmacological treatment of tics remains an indiviual choice depending on each patient's own specific needs.
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Affiliation(s)
- Sabine Mogwitz
- Department of Child and Adolescent Psychiatry, Faculty of Medicine of the TU Dresden, 01307 Dresden, Germany
| | - Judith Buse
- Department of Child and Adolescent Psychiatry, Faculty of Medicine of the TU Dresden, 01307 Dresden, Germany
| | - Nicole Wolff
- Department of Child and Adolescent Psychiatry, Faculty of Medicine of the TU Dresden, 01307 Dresden, Germany
| | - Veit Roessner
- Department of Child and Adolescent Psychiatry, Faculty of Medicine of the TU Dresden, 01307 Dresden, Germany
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24
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Cosme CV, Gutman AL, Worth WR, LaLumiere RT. D1, but not D2, receptor blockade within the infralimbic and medial orbitofrontal cortex impairs cocaine seeking in a region-specific manner. Addict Biol 2018; 23:16-27. [PMID: 27578356 DOI: 10.1111/adb.12442] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Revised: 06/29/2016] [Accepted: 07/30/2016] [Indexed: 12/01/2022]
Abstract
Evidence suggests that the infralimbic cortex (IL), a subregion of the ventromedial prefrontal cortex (vmPFC), suppresses cocaine-seeking behavior in a self-administration paradigm, whereas the more anterior vmPFC subregion, the medial orbitofrontal cortex (mOFC), has received very little attention in this regard. Despite the established dopaminergic innervation of the vmPFC, whether dopamine receptor blockade in each subregion alters the reinstatement of cocaine seeking is unclear. To address this issue, male Sprague-Dawley rats underwent 2 weeks of cocaine self-administration, followed by extinction training and reinstatement testing. Immediately prior to each reinstatement test, rats received microinjections of the D1 receptor antagonist SCH 23390, the D2 receptor antagonist sulpiride or their respective vehicles. D1 receptor blockade in the IL reduced cued reinstatement but had no effect on cocaine prime and cue + cocaine-prime reinstatement, whereas D2 receptor blockade in the IL had no effect on reinstatement. For the mOFC, however, D1 receptor blockade reduced cocaine seeking in all reinstatement types, whereas blocking D2 receptors in the mOFC had no effect on any form of cocaine seeking. These findings suggest different roles for D1 receptors in the IL versus the mOFC in regulating cocaine-seeking behavior. Moreover, even as previous work indicates that IL inactivation does not affect reinstatement but, rather, induces cocaine seeking during extinction, the present findings suggest that dopamine receptor activation in the IL is necessary for cocaine seeking under some circumstances.
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Affiliation(s)
- Caitlin V. Cosme
- Department of Psychological and Brain Sciences; University of Iowa; Iowa City IA USA
| | - Andrea L. Gutman
- Department of Psychological and Brain Sciences; University of Iowa; Iowa City IA USA
| | - Wensday R. Worth
- Department of Psychological and Brain Sciences; University of Iowa; Iowa City IA USA
| | - Ryan T. LaLumiere
- Department of Psychological and Brain Sciences; University of Iowa; Iowa City IA USA
- Interdisciplinary Graduate Program in Neuroscience; University of Iowa; Iowa City IA USA
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25
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Li L, Weng Y, Wang W, Bai M, Lei H, Zhou H, Jiang H. Multiple organic cation transporters contribute to the renal transport of sulpiride. Biopharm Drug Dispos 2017; 38:526-534. [PMID: 28926871 DOI: 10.1002/bdd.2104] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 08/29/2017] [Accepted: 09/07/2017] [Indexed: 01/01/2023]
Abstract
Sulpiride, a selective dopamine D2 receptor blocker, is used widely for the treatment of schizophrenia, depression and gastric/duodenal ulcers. Because the great majority of sulpiride is positively charged at physiological pH 7.4, and ~70% of the dose recovered in urine is in the unchanged form after human intravenous administration of sulpiride, it is believed that transporters play an important role in the renal excretion of sulpiride. The aim of the present study was to explore which transporters contribute to the renal disposition of sulpiride. The results demonstrated that sulpiride was a substrate of human carnitine/organic cation transporter 1 (hOCTN1) and 2 (hOCTN2), human organic cation transporter 2 (hOCT2), human multidrug and toxin efflux extrusion protein 1 (hMATE1) and 2-K (hMATE2-K). Sulpiride accumulation from the basolateral (BL) to the apical (AP) side in MDCK-hOCT2/pcDNA3.1 cell monolayers was much greater than that in MDCK-hOCT2/hMATE1 cells, and cimetidine dramatically reduced the intracellular accumulation of sulpiride from BL to AP. In addition, the accumulation of sulpiride in mouse primary renal tubular cells (mPRTCs) was markedly reduced by inhibitors of Oct2 and Octns. The results implied that OCTN1, OCTN2, OCT2, MATE1 and MATE2-K probably contributed to the renal transfer of sulpiride, in which OCT2 mediated the uptake of sulpiride from the bloodstream to the proximal tubular cells, while MATEs contributed to the sulpiride efflux from the proximal tubular cells to the renal lumen, and OCTNs participated in both renal secretion and reabsorption.
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Affiliation(s)
- Liping Li
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Yayun Weng
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wei Wang
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Mengru Bai
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hongmei Lei
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Hui Zhou
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Huidi Jiang
- Laboratory of Pharmaceutical Analysis and Drug Metabolism, Zhejiang Province Key Laboratory of Anti-Cancer Drug Research, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang, China
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26
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Ibrahim FA, El-Yazbi AF, Wagih MM, Barary MA. Chromatographic determination of zonisamide, topiramate and sulpiride in plasma by a fluorescent 'turn-on' chemosensor. Bioanalysis 2017; 9:1049-64. [PMID: 28737428 DOI: 10.4155/bio-2017-0090] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
AIM Antiepileptics (AEDs) and antipsychotics are often coprescribed. Interactions between these drugs may affect both efficacy and toxicity. Therefore, drug monitoring is necessary for appropriate dosage adjustments. MATERIALS & METHODS Specific 'turn-on' chemosensor, 4-chloro-7-nitrobenzofurazan is used for selective and sensitive determination of two AEDs: zonisamide (ZON) and topiramate (TOP) with the antipsychotic sulpiride (SUL) in epileptic patients' plasma followed by reversed-phase-HPLC separation without any interference. RESULTS Linear behavior was observed in the range of 0.1-3 μg/ml and 0.01-0.5 μg/ml for the AEDs and SUL, respectively, with LOD of 33, 46 and 4 ng/ml and LOQ of 86, 93 and 9 ng/ml for ZON, TOP and SUL, respectively. The proposed method was successfully applied for determination of different pharmacokinetic parameters of ZON and TOP, and for clinical monitoring of the three drugs in healthy volunteers following oral administration. CONCLUSION The developed method is suitable for the routine therapeutic drug monitoring of these drugs.
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27
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Kasuya E, Sutoh M, Yayou KI. The effects of l-DOPA and sulpiride on growth hormone secretion at different injection times in Holstein steers. Anim Sci J 2017; 88:1842-1848. [PMID: 28585780 DOI: 10.1111/asj.12850] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 04/27/2017] [Indexed: 11/29/2022]
Abstract
The effects of l-DOPA, a precursor of dopamine (DA), and sulpiride, a D2 -type DA receptor blocker, on growth hormone (GH) and prolactin (PRL) secretion were investigated in steers. Eight Holstein steers (212.8 ± 7.8 kg body weight) were used. Lighting conditions were 12:12 L:D (lights on: 06.00-18.00 hours). Blood samplings were performed during the daytime (11.00-15.00 hours) and nighttime (23.00-03.00 hours). Intravenous injections of drugs or saline were performed at 12.00 hour for the daytime and 00.00 hour for the nighttime, respectively. Plasma GH and PRL concentrations were determined by radioimmunoassay. l-DOPA did not alter the GH secretion when it was injected at 12.00 hour (spontaneous GH level at its peak). On the other hand, l-DOPA increased GH secretion at 00.00 hour (GH level at its trough). Injection of sulpiride suppressed GH secretion at 12.00 hour but did not affect GH levels at 00.00 hour. l-DOPA inhibited and sulpiride stimulated PRL release during both periods. These results suggest that dopaminergic neurons have stimulatory action on GH secretion and inhibitory action on PRL secretion in cattle. In addition, injection time should be considered to evaluate the exact effects on GH secretion due to its ultradian rhythm of GH secretion in cattle.
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Affiliation(s)
- Etsuko Kasuya
- Animal Environment and Health Unit, Division of Animal Environment and Waste Management Research, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Madoka Sutoh
- Animal Environment and Health Unit, Division of Animal Environment and Waste Management Research, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Ken-Ichi Yayou
- Animal Environment and Health Unit, Division of Animal Environment and Waste Management Research, Institute of Livestock and Grassland Science, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
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28
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Zhang W, She X, Wang L, Fan H, Zhou Q, Huang X, Tang JZ. Preparation, Characterization and Application of a Molecularly Imprinted Polymer for Selective Recognition of Sulpiride. Materials (Basel) 2017; 10:E475. [PMID: 28772831 PMCID: PMC5459076 DOI: 10.3390/ma10050475] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2017] [Revised: 04/09/2017] [Accepted: 04/24/2017] [Indexed: 11/30/2022]
Abstract
A novel molecular imprinting polymer (MIP) was prepared by bulk polymerization using sulpiride as the template molecule, itaconic acid (ITA) as the functional monomer and ethylene glycol dimethacrylate (EGDMA) as the crosslinker. The formation of the MIP was determined as the molar ratio of sulpiride-ITA-EGDMA of 1:4:15 by single-factor experiments. The MIP showed good adsorption property with imprinting factor α of 5.36 and maximum adsorption capacity of 61.13 μmol/g, and was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FT-IR) and surface area analysis. With the structural analogs (amisulpride, tiapride, lidocaine and cisapride) and small molecules containing a mono-functional group (p-toluenesulfonamide, formamide and 1-methylpyrrolidine) as substrates, static adsorption, kinetic adsorption, and rebinding experiments were also performed to investigate the selective adsorption ability, kinetic characteristic, and recognition mechanism of the MIP. A serial study suggested that the highly selective recognition ability of the MIP mainly depended on binding sites provided by N-functional groups of amide and amine. Moreover, the MIP as solid-phase extractant was successfully applied to extraction of sulpiride from the mixed solution (consisted of p-toluenesulfonamide, sulfamethoxazole, sulfanilamide, p-nitroaniline, acetanilide and trimethoprim) and serum sample, and extraction recoveries ranged from 81.57% to 86.63%. The tentative tests of drug release in stimulated intestinal fluid (pH 6.8) demonstrated that the tablet with the MIP-sulpiride could obviously inhibit sulpiride release rate. Thus, ITA-based MIP is an efficient and promising alternative to solid-phase adsorbent for extraction of sulpiride and removal of interferences in biosample analysis, and could be used as a potential carrier for controlled drug release.
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Affiliation(s)
- Wei Zhang
- School of Basic Courses, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Xuhui She
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
- Guangzhou KingMed Center for Clinical Laboratory Co., Ltd., Guangzhou 510005, China.
| | - Liping Wang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
- China National Analytical Center Guangzhou, Guangzhou 510070, China.
| | - Huajun Fan
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Qing Zhou
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Xiaowen Huang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - James Z Tang
- Faculty of Science and Engineering, University of Wolverhampton, Wolverhampton WV1 1LY, UK.
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29
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Abstract
Prepulse inhibition (PPI) is a behavioral test in which the startle reflex response to a high-intensity stimulus (pulse) is inhibited by the prior presentation of a weak stimulus (prepulse). The classic neural circuitry that mediates startle response is localized in the brainstem; however, recent studies point to the contribution of structures involved in higher cognitive functions in regulating the sensorimotor gating, particularly forebrain regions innervated by dopaminergic nuclei. The aim of the present study was to verify the role of dorsal striatum (DS) and dopaminergic transmitting mediated by D1 and D2 receptors on PPI test in rats. DS inactivation induced by muscimol injection did not affect PPI (%PPI and startle response), although it impaired the locomotor activity and caused catalepsy. Infusion of D1-like antagonist SCH23390 impaired %PPI but did not disturb the startle response and locomotor activity evaluated immediately after PPI test. D2 antagonist microinjection (sulpiride) did not affect %PPI and startle response, but impaired motor activity. These results point to an important role of DS, probably mediated by direct basal ganglia pathway, on modulation of sensorimotor gating, in accordance with clinical studies showing PPI deficits in schizophrenia, Tourette syndrome, and compulsive disorders - pathologies related to basal ganglia dysfunctions.
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Affiliation(s)
- Samanta Rodrigues
- Centro de Matemática Computação e Cognição, Universidade Federal do ABC, São Bernardo do Campo, Brazil
| | - Cristiane Salum
- Centro de Matemática Computação e Cognição, Universidade Federal do ABC, São Bernardo do Campo, Brazil
| | - Tatiana L Ferreira
- Centro de Matemática Computação e Cognição, Universidade Federal do ABC, São Bernardo do Campo, Brazil
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Hoosain FG, Choonara YE, Kumar P, Tomar LK, Tyagi C, du Toit LC, Pillay V. In Vivo Evaluation of a PEO-Gellan Gum Semi-Interpenetrating Polymer Network for the Oral Delivery of Sulpiride. AAPS PharmSciTech 2017; 18:654-670. [PMID: 27184677 DOI: 10.1208/s12249-016-0538-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 04/21/2016] [Indexed: 02/08/2023] Open
Abstract
In this study, an optimized epichlorohydrin-crosslinked semi-interpenetrating polymer network xerogel matrix system (XePoMas) for the controlled delivery of sulpiride was prepared. The ability of XePoMas to sustain drug release was determined by in vitro and in vivo drug release experiments. Swelling of the xerogel over the 24-h experimental period ranged from 346 to 648%; swelling was observed to increase exponentially over the initial 8 h. In vitro drug release depicted a linear zero order drug release profile with an R 2 value of 0.9956. The ability of the fabricated XePoMas to sustain drug release and enhance bioavailability of sulpiride in vivo was investigated by evaluating the plasma drug concentration over 24 h in the large pig model. The optimized XePoMas formulation was shown to increase intestinal absorption of sulpiride to a greater extent than the marketed product in vivo, with a C max of 830.58 ng/mL after 15 h.
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Abstract
BACKGROUND Between 40% and 70% of people with treatment-resistant schizophrenia do not respond to clozapine, despite adequate blood levels. For these people, a number of treatment strategies have emerged, including the prescription of a second anti-psychotic drug in combination with clozapine. OBJECTIVES To determine the clinical effects of various clozapine combination strategies with antipsychotic drugs in people with treatment-resistant schizophrenia both in terms of efficacy and tolerability. SEARCH METHODS We searched the Cochrane Schizophrenia Group's Study-Based Register of Trials (to 28 August 2015) and MEDLINE (November 2008). We checked the reference lists of all identified randomised controlled trials (RCT). For the first version of the review, we also contacted pharmaceutical companies to identify further trials. SELECTION CRITERIA We included only RCTs recruiting people of both sexes, aged 18 years or more, with a diagnosis of treatment-resistant schizophrenia (or related disorders) and comparing clozapine plus another antipsychotic drug with clozapine plus a different antipsychotic drug. DATA COLLECTION AND ANALYSIS We extracted data independently. For dichotomous data, we calculated risk ratios (RRs) and 95% confidence intervals (CI) on an intention-to-treat basis using a random-effects meta-analysis. For continuous data, we calculated mean differences (MD) and 95% CIs. We used GRADE to create 'Summary of findings' tables and assessed risk of bias for included studies. MAIN RESULTS We identified two further studies with 169 participants that met our inclusion criteria. This review now includes five studies with 309 participants. The quality of evidence was low, and, due to the high degree of heterogeneity between studies, we were unable to undertake a formal meta-analysis to increase the statistical power.For this update, we specified seven main outcomes of interest: clinical response in mental state (clinically significant response, mean score/change in mental state), clinical response in global state (mean score/change in global state), weight gain, leaving the study early (acceptability of treatment), service utilisation outcomes (hospital days or admissions to hospital) and quality of life.We found some significant differences between clozapine combination strategies for global and mental state (clinically significant response and change), and there were data for leaving the study early and weight gain. We found no data for service utilisation and quality of life. Clozapine plus aripiprazole versus clozapine plus haloperidolThere was no long-term significant difference between aripiprazole and haloperidol combination strategies in change of mental state (1 RCT, n = 105, MD 0.90, 95% CI -4.38 to 6.18, low quality evidence). There were no adverse effect data for weight gain but there was a benefit of aripiprazole for adverse effects measured by the LUNSERS at 12 weeks (1 RCT, n = 105, MD -4.90, 95% CI -8.48 to -1.32) and 24 weeks (1 RCT, n = 105, MD -4.90, 95% CI -8.25 to -1.55), but not 52 weeks (1 RCT, n = 105, MD -4.80, 95% CI -9.79 to 0.19). Similar numbers of participants from each group left the study early (1 RCT, n = 106, RR 1.27, 95% CI 0.72 to 2.22, very low quality evidence). Clozapine plus amisulpride versus clozapine plus quetiapine One study showed a significant benefit of amisulpride over quetiapine in the short term, for both change in global state (Clinical Global Impression (CGI): 1 RCT, n = 50, MD -0.90, 95% CI -1.38 to -0.42, very low quality evidence) and mental state (Brief Psychiatric Rating Scale (BPRS): 1 RCT, n = 50, MD -4.00, 95% CI -5.86 to -2.14, low quality evidence). Similar numbers of participants from each group left the study early (1 RCT, n = 56, RR 0.20, 95% CI 0.02 to 1.60, very low quality evidence) Clozapine plus risperidone versus clozapine plus sulpirideThere was no difference between risperidone and sulpiride for clinically significant response, defined by the study as 20% to 50% reduction in Positive and Negative Syndrome Scale (PANSS) (1 RCT, n = 60, RR 0.82, 95% CI 0.40 to 1.68, very low quality evidence). There were similar equivocal results for weight gain (1 RCT, n = 60, RR 0.40, 95% CI 0.08 to 1.90, very low quality evidence) and mental state (PANSS total: 1 RCT, n = 60, MD -2.28, 95% CI -7.41 to 2.85, very low quality evidence). No-one left the study early. Clozapine plus risperidone versus clozapine plus ziprasidoneThere was no difference between risperidone and ziprasidone for clinically significant response (1 RCT, n = 24, RR 0.80, 95% CI 0.28 to 2.27, very low quality evidence), change in global state CGI-II score (1 RCT, n = 22, MD -0.30, 95% CI -0.82 to 0.22, very low quality evidence), change in PANSS total score (1 RCT, n = 16, MD 1.00, 95% CI -7.91 to 9.91, very low quality evidence) or leaving the study early (1 RCT, n = 24, RR 1.60, 95% CI 0.73 to 3.49, very low quality evidence). Clozapine plus ziprasidone versus clozapine plus quetiapineOne study found, in the medium term, a superior effect for ziprasidone combination compared with quetiapine combination for clinically significant response in mental state (> 50% reduction PANSS: 1 RCT, n = 63, RR 0.54, 95% CI 0.35 to 0.81, low quality evidence), global state (CGI - Severity score: 1 RCT, n = 60, MD -0.70, 95% CI -1.18 to -0.22, low quality evidence) and mental state (PANSS total score: 1 RCT, n = 60, MD -12.30, 95% CI -22.43 to -2.17, low quality evidence). There was no effect for leaving the study early (1 RCT, n = 63, RR 0.52, CI 0.05 to 5.41, very low quality evidence). AUTHORS' CONCLUSIONS The reliability of results from this review is limited, evidence is of low or very low quality. Furthermore, due to the limited number of included studies, we were unable to undertake formal meta-analyses. As a consequence, any conclusions drawn from these findings are based on single, small-sized RCTs with high risk of type II error. Properly conducted and adequately powered RCTs are required. Future trialists should seek to measure patient-important outcomes such as quality of life, as well as clinical response and adverse effects.
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Affiliation(s)
- Sarah Barber
- University of OxfordDepartment of PsychiatryWarneford HospitalOxfordUK
| | | | - Martina Corsi
- University of OxfordDepartment of PsychiatryWarneford HospitalOxfordUK
| | - Andrea Cipriani
- University of OxfordDepartment of PsychiatryWarneford HospitalOxfordUK
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Babaie J, Sayyah M, Fard-Esfahani P, Golkar M, Gharagozli K. Contribution of dopamine neurotransmission in proconvulsant effect of Toxoplasma gondii infection in male mice. J Neurosci Res 2017; 95:1894-1905. [PMID: 28266723 DOI: 10.1002/jnr.24036] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 01/18/2017] [Accepted: 01/18/2017] [Indexed: 12/19/2022]
Abstract
Epilepsy is one of the most common neurologic disorders worldwide with no distinguishable cause in 60% of patients. One-third of world's population is infected with Toxoplasma gondii (T. gondii). This intracellular parasite has high tendency to excitable cells including neurons. We assessed seizure susceptibility and involvement of dopaminergic system in male mice with acute and chronic T. gondii infection. Mice were infected by intraperitoneal injection of T. gondii cysts. Acute and chronic stages of infection were determined by quantification of SAG1/BAG1 transcripts and level of repetitive REP-529 sequence in the brain of mice by real-time PCR. Threshold of clonic seizures was measured by tail vein infusion of pentylenetetrazole. The infected mice were pretreated with D1 and D2 dopamine receptor antagonists, and seizure threshold was measured. Moreover, seizure threshold was determined after treatment of toxoplasmosis by sulfamethoxazole and trimethoprim. SAG1 level reached the maximum at week 2 after infection and then declined. The maximum level of BAG1 was observed at the week 3 and preserved till the week 8. REP-529 was detected at first week after infection, reached maximum at the week 3 and kept at this level till the eighth week. Threshold of seizures significantly decreased in both acute and chronic phases of infection. D1 and D2 receptors antagonists inhibited proconvulsant effect of toxoplasmosis. Chemotherapy inhibited parasite growth and multiplication, and returned seizure susceptibility to the level of non-infected mice. Dopaminergic neurotransmission participates in proconvulsant effect of T. gondii. The effect of parasite is eliminated by antibiotic therapy. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Jalal Babaie
- Department of Physiology and Pharmacology, Pasteur Institute of Iran, Tehran, Iran.,Molecular Parasitology Laboratory, Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran
| | - Mohammad Sayyah
- Department of Physiology and Pharmacology, Pasteur Institute of Iran, Tehran, Iran
| | | | - Majid Golkar
- Molecular Parasitology Laboratory, Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran
| | - Kourosh Gharagozli
- Department of Neurology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Ohtani N, Masaki E. D2-like receptors in the descending dopaminergic pathway are not involved in the decreased postoperative nociceptive threshold induced by plantar incision in adult rats. J Pain Res 2016; 9:865-869. [PMID: 27799818 PMCID: PMC5085307 DOI: 10.2147/jpr.s120470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Approximately half of all patients who undergo surgery develop postoperative pain, the mechanisms of which are not well understood by anesthesiologists. D2-like receptors in the descending dopaminergic pathway play an important role in regulation of pain transmission in the spinal cord. Impairment of inhibitory neurons in the spinal cord is suggested as part of the mechanism for neuropathic pain, which is one component of postoperative pain. The purpose of this study was to investigate whether impairment of D2-like receptors in the descending dopaminergic pathway in the spinal cord is involved in the decreased postoperative nociceptive threshold in rats. Methods Male Sprague-Dawley rats (250–300 g) were anesthetized with sevoflurane and an intrathecal (IT) catheter was implanted. Six days later, a plantar incision was made. On the following day, saline, a D2-like receptor agonist (quinpirole), or a D2-like receptor antagonist (sulpiride) was administered intrathecally. Thermal and mechanical nociceptive responses were assessed by exposure to infrared radiant heat and the von Frey filament test before and after plantar incision. Results Plantar incision decreased both thermal latency and the mechanical nociceptive threshold. IT administration of quinpirole inhibited the nociceptive responses induced by plantar incision, but sulpiride had no effect. Conclusion A D2-like receptor agonist had antinociceptive effects on the hypersensitivity response triggered by a surgical incision, but a D2-like receptor antagonist had no effect on this response. These results suggest that impairment and/or modification of D2-like receptors in the descending dopaminergic pathway in the spinal cord is not involved in the postoperative decrease in nociceptive threshold.
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Affiliation(s)
- Norimasa Ohtani
- Division of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
| | - Eiji Masaki
- Division of Dento-oral Anesthesiology, Tohoku University Graduate School of Dentistry, Sendai, Miyagi, Japan
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da Silva Fragoso VM, de Morais Coura CP, Hoppe LY, Soares MAG, Silva D, Cortez CM. Binding of Sulpiride to Seric Albumins. Int J Mol Sci 2016; 17:ijms17010059. [PMID: 26742031 PMCID: PMC4730304 DOI: 10.3390/ijms17010059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/23/2015] [Accepted: 11/30/2015] [Indexed: 01/23/2023] Open
Abstract
The aim of this work was to study the interaction of sulpiride with human serum albumin (HSA) and bovine serum albumin (BSA) through the fluorescence quenching technique. As sulpiride molecules emit fluorescence, we have developed a simple mathematical model to discriminate the quencher fluorescence from the albumin fluorescence in the solution where they interact. Sulpiride is an antipsychotic used in the treatment of several psychiatric disorders. We selectively excited the fluorescence of tryptophan residues with 290 nm wavelength and observed the quenching by titrating HSA and BSA solutions with sulpiride. Stern-Volmer graphs were plotted and quenching constants were estimated. Results showed that sulpiride form complexes with both albumins. Estimated association constants for the interaction sulpiride–HSA were 2.20 (±0.08) × 104 M−1, at 37 °C, and 5.46 (±0.20) × 104 M−1, at 25 °C. Those for the interaction sulpiride-BSA are 0.44 (±0.01) × 104 M−1, at 37 °C and 2.17 (±0.04) × 104 M−1, at 25 °C. The quenching intensity of BSA, which contains two tryptophan residues in the peptide chain, was found to be higher than that of HSA, what suggests that the primary binding site for sulpiride in albumin should be located next to the sub domain IB of the protein structure.
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Affiliation(s)
- Viviane Muniz da Silva Fragoso
- Laboratory of Innovations in Therapies, Education and Bioproducts, Oswaldo Cruz Institute/FIOCRUZ, Av. Brasil 4365, Rio de Janeiro 21045-900, Brazil.
| | - Carla Patrícia de Morais Coura
- Postgraduation in Medical Sciences, Rio de Janeiro State University, Av. Manoel de Abreu, 444, Rio de Janeiro 20550-171, Brazil.
| | - Luanda Yanaan Hoppe
- Laboratory of Innovations in Therapies, Education and Bioproducts, Oswaldo Cruz Institute/FIOCRUZ, Av. Brasil 4365, Rio de Janeiro 21045-900, Brazil.
| | - Marília Amável Gomes Soares
- Applied Mathematics, Rio de Janeiro State University, Rua São Francisco Xavier, 524, Rio de Janeiro 20559-900, Brazil.
| | - Dilson Silva
- Postgraduation in Medical Sciences, Rio de Janeiro State University, Av. Manoel de Abreu, 444, Rio de Janeiro 20550-171, Brazil.
- Applied Mathematics, Rio de Janeiro State University, Rua São Francisco Xavier, 524, Rio de Janeiro 20559-900, Brazil.
| | - Celia Martins Cortez
- Postgraduation in Medical Sciences, Rio de Janeiro State University, Av. Manoel de Abreu, 444, Rio de Janeiro 20550-171, Brazil.
- Applied Mathematics, Rio de Janeiro State University, Rua São Francisco Xavier, 524, Rio de Janeiro 20559-900, Brazil.
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Guarnieri RV, Ribeiro RL, de Souza AAL, Galduróz JCF, Covolan L, Bueno OFA. Effects of Sulpiride on True and False Memories of Thematically Related Pictures and Associated Words in Healthy Volunteers. Front Psychiatry 2016; 7:28. [PMID: 27047394 PMCID: PMC4796014 DOI: 10.3389/fpsyt.2016.00028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 02/19/2016] [Indexed: 12/20/2022] Open
Abstract
Episodic memory, working memory, emotional memory, and attention are subject to dopaminergic modulation. However, the potential role of dopamine on the generation of false memories is unknown. This study defined the role of the dopamine D2 receptor on true and false recognition memories. Twenty-four young, healthy volunteers ingested a single dose of placebo or 400 mg oral sulpiride, a dopamine D2-receptor antagonist, just before starting the recognition memory task in a randomized, double-blind, and placebo-controlled trial. The sulpiride group presented more false recognitions during visual and verbal processing than the placebo group, although both groups had the same indices of true memory. These findings demonstrate that dopamine D2 receptors blockade in healthy volunteers can specifically increase the rate of false recognitions. The findings fit well the two-process view of causes of false memories, the activation/monitoring failures model.
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Affiliation(s)
- Regina V Guarnieri
- Department of Psychobiology, Universidade Federal de São Paulo , São Paulo , Brazil
| | - Rafaela L Ribeiro
- Department of Psychobiology, Universidade Federal de São Paulo , São Paulo , Brazil
| | | | | | - Luciene Covolan
- Department of Physiology, Universidade Federal de São Paulo , São Paulo , Brazil
| | - Orlando F A Bueno
- Department of Psychobiology, Universidade Federal de São Paulo , São Paulo , Brazil
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Taketa Y, Inoue K, Takahashi M, Sakamoto Y, Watanabe G, Taya K, Yoshida M. Effects of sulpiride and ethylene glycol monomethyl ether on endometrial carcinogenicity in Donryu rats. J Appl Toxicol 2015; 36:769-76. [PMID: 26178146 DOI: 10.1002/jat.3206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 05/13/2015] [Accepted: 06/04/2015] [Indexed: 11/07/2022]
Abstract
Sulpiride and ethylene glycol monomethyl ether (EGME) are known ovarian toxicants that stimulate prolactin (PRL) secretion, resulting in hypertrophy of the corpora lutea and increased progesterone (P4) production. The purpose of the present study was to investigate how the PRL stimulatory agents affected uterine carcinogenesis and to clarify the effects of PRL on endometrial adenocarcinoma progression in rats. Ten-week-old female Donryu rats were treated once with N-ethyl-N'-nitro-N-nitrosoguanidine (20 mg kg(-1) ), followed by treatment with sulpiride (200 ppm) or EGME (1250 ppm) from 11 weeks of age to 12 months of age. Sulpiride treatment inhibited the incidence of uterine adenocarcinoma and precancerous lesions of atypical endometrial hyperplasia, whereas EGME had no effect on uterine carcinogenesis. Sulpiride markedly prevented the onset of persistent estrus throughout the study period, and EGME delayed and inhibited the onset of persistent estrus. Moreover, sulpiride-treated animals showed high PRL and P4 serum levels without changes in the levels of estradiol-17β, low uterine weights and histological luteal cell hypertrophy. EGME did not affect serum PRL and P4 levels. These results suggest that the prolonged low estradiol-17β to P4 ratio accompanied by persistent estrous cycle abnormalities secondary to the luteal stimulatory effects of PRL may explain the inhibitory effects of sulpiride on uterine carcinogenesis in rats. Copyright © 2015 John Wiley & Sons, Ltd.
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Affiliation(s)
- Yoshikazu Taketa
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
- Tsukuba Drug Safety, Global Drug Safety, Biopharmaceutical Assessments Core Function Unit, Eisai Product Creation Systems, Eisai Co., Ltd., Tsukuba, Ibaraki, Japan
| | - Kaoru Inoue
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Miwa Takahashi
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Yohei Sakamoto
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
| | - Gen Watanabe
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Kazuyoshi Taya
- Laboratory of Veterinary Physiology, Department of Veterinary Medicine, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, Japan
| | - Midori Yoshida
- Division of Pathology, National Institute of Health Sciences, Setagaya-ku, Tokyo, Japan
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Cong Y, Zou H, Qiao G, Lin J, Wang X, Li X, Li Y, Zhu S. Bilateral mammary duct ectasia induced by sulpiride-associated hyperprolactinemia: A case report. Oncol Lett 2015; 9:2181-2184. [PMID: 26137036 DOI: 10.3892/ol.2015.3034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 02/17/2015] [Indexed: 11/05/2022] Open
Abstract
A 32 year old female diagnosed with schizophrenia was treated with sulpiride, trihexyphenidyl and alprazolam for 6 years. A physical examination revealed bilateral nipple retraction and a non-tender mass in the left breast, with little nipple discharge. Tests revealed high levels of carbohydrate antigen 125, serum prolactin and testosterone levels, and ultrasound revealed a number of masses in the bilateral breasts; the largest mass (2.2×1.3 cm) was located in the left breast. A rich blood flow signal was identified around the nodule. The ducts in the bilateral breasts exhibited cystic ectasia. Multiple enlarged lymph nodes were found in the bilateral axillae. Mammography revealed thickened breast tissue without an evident mass, and calcification. A segmental mastectomy was performed and subsequent histological examination revealed multiple dilated ducts, the largest of which contained eosinophilic material. The pathological diagnosis was of breast duct dilatation. Bacterial culture and drug sensitivity analysis of the secretions from the cystic cavity revealed no bacterial growth, and an acid fast bacillus stain was negative. Extravasation of the surgical wound occurred 1 month later, and Staphylococcus epidermidis was observed using a bacterial culture. This was treated with moxifloxacin for 1 week. It was suggested that the patient should switch to a prolactin sparing antipsychotic in view of the hyperprolactinemia, however, the patient refused. After a clinical follow-up of 16 months, the wound had healed well and no palpable mass was found in the breast.
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Affiliation(s)
- Yizi Cong
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
| | - Haidong Zou
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
| | - Guangdong Qiao
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
| | - Jun Lin
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
| | - Xingmiao Wang
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
| | - Xiaohui Li
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
| | - Yalun Li
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
| | - Shiguang Zhu
- Department of Breast Surgery, Yantai Yuhuangding Hospital Affiliated to Medical College of Qingdao University, Yantai, Shandong 264400, P.R. China
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Janssen LK, Sescousse G, Hashemi MM, Timmer MH, ter Huurne NP, Geurts DE, Cools R. Abnormal modulation of reward versus punishment learning by a dopamine D2-receptor antagonist in pathological gamblers. Psychopharmacology (Berl) 2015; 232:3345-53. [PMID: 26092311 DOI: 10.1007/s00213-015-3986-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/01/2015] [Indexed: 11/04/2022]
Abstract
RATIONALE Pathological gambling has been associated with dopamine transmission abnormalities, in particular dopamine D2-receptor deficiency, and reversal learning deficits. Moreover, pervasive theoretical accounts suggest a key role for dopamine in reversal learning. However, there is no empirical evidence for a direct link between dopamine, reversal learning and pathological gambling. OBJECTIVE The aim of the present study is to triangulate dopamine, reversal learning, and pathological gambling. METHODS Here, we assess the hypothesis that pathological gambling is accompanied by dopamine-related problems with learning from reward and punishment by investigating effects of the dopamine D2-receptor antagonist sulpiride (400 mg) on reward- and punishment-based reversal learning in 18 pathological gamblers and 22 healthy controls, using a placebo-controlled, double-blind, counter-balanced design. RESULTS In line with previous studies, blockade of D2 receptors with sulpiride impaired reward versus punishment reversal learning in controls. By contrast, sulpiride did not have any outcome-specific effects in gamblers. CONCLUSION These data demonstrate that pathological gambling is associated with a dopamine-related anomaly in reversal learning from reward and punishment.
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Jiang L, Long K, Schaeffel F, Zhou X, Zheng Y, Ying H, Lu F, Stell WK, Qu J. Effects of dopaminergic agents on progression of naturally occurring myopia in albino guinea pigs (Cavia porcellus). Invest Ophthalmol Vis Sci 2014; 55:7508-19. [PMID: 25270191 DOI: 10.1167/iovs.14-14294] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE Disruption of dopaminergic signaling has been implicated in the abnormalities of ocular development in albinism, and many experiments have shown that retinal dopamine is a major regulator of postnatal eye growth and myopia in animal models. Therefore, in the present study we investigated whether progressive myopia, which can occur in albino guinea pigs without experimental manipulation of visual conditions, is affected by dopaminergic agents. METHODS Two-week-old albino guinea pigs, selected for being myopic (range refractive error [RE], -2 to -10 diopters [D]), received unilateral peribulbar injections of apomorphine (nonselective dopamine receptor agonist; 0, 7.5, 25, 75, 250, 750, and 2500 ng; n = 112), SKF38393 (D1-like agonist; 0, 10, 100, 1000 ng; n = 63), SCH23390 (D1-like antagonist; 0, 2500 ng; n = 27), quinpirole (D2-like agonist; 0, 10, 100, 1000 ng; n = 58), or sulpiride (D2-like antagonist; 0, 2500 ng; n = 24) once a day for four weeks. One noninjected group (n = 19) served as untreated control. Refractive states and axial dimensions of the eyes were measured without cycloplegia or general anesthetic, using eccentric infrared photoretinoscopy and A-scan ultrasonography, respectively, before treatment, and after 2 and 4 weeks of treatment. The main drug effects were analyzed by paired t-test or 2-way repeated measures ANOVA, as required. RESULTS The naturally occurring progression of myopic RE was inhibited by apomorphine at relatively high doses (250 and 750 ng), SKF38393 at 100 ng (D1-like agonist), and sulpiride at 2500 ng (D2-like antagonist), but promoted by apomorphine at a lower dose (25 ng), quinpirole at 100 ng (D2-like agonist), and SCH23390 at 2500 ng (D1-like antagonist). All drugs affected primarily vitreous chamber depth, rather than anterior segment dimensions. CONCLUSIONS Our data suggest that the activation of D1-like receptors inhibits, whereas activation of D2-like receptors promotes, progressive myopia in this animal model. The robust effects of antagonists suggest that ocular dopamine receptors in these albinos may be in a chronic state of partial excitation. The precise location and identity of the receptors responsible for these effects remain to be determined.
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Affiliation(s)
- Liqin Jiang
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University; and State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, Zhejiang, China
| | - Keli Long
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University; and State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, Zhejiang, China Xuzhou Eye Institute, Xuzhou, Jiangsu Province, China
| | - Frank Schaeffel
- Section of Neurobiology of the Eye, Ophthalmic Research Institute, Tübingen, Germany
| | - Xiangtian Zhou
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University; and State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, Zhejiang, China
| | - Yibo Zheng
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University; and State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, Zhejiang, China
| | - Huangfang Ying
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University; and State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, Zhejiang, China
| | - Fan Lu
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University; and State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, Zhejiang, China
| | - William K Stell
- Departments of Cell Biology and Anatomy, and Surgery, and Hotchkiss Brain Institute, University of Calgary Faculty of Medicine, Calgary, Alberta, Canada
| | - Jia Qu
- School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University; and State Key Laboratory Cultivation Base and Key Laboratory of Vision Science, Ministry of Health, Wenzhou, Zhejiang, China
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Lee KN, Pellom ST, Oliver E, Chirwa S. Characterization of the guinea pig animal model and subsequent comparison of the behavioral effects of selective dopaminergic drugs and methamphetamine. Synapse 2014; 68:221-33. [PMID: 24436154 DOI: 10.1002/syn.21731] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2013] [Accepted: 12/21/2013] [Indexed: 12/30/2022]
Abstract
Although not commonly used in behavior tests guinea pigs may offer subtle behavior repertoires that better mimic human activity and warrant study. To test this, 31 Hartley guinea pigs (male, 200-250 g) were evaluated in PhenoTyper cages using the video-tracking EthoVision XT 7.0 software. Results showed that guinea pigs spent more time in the hidden zone (small box in corner of cage) than the food/water zone, or arena zone. Guinea pigs exhibited thigmotaxis (a wall following strategy) and were active throughout the light and dark phases. Eating and drinking occurred throughout the light and dark phases. An injection of 0.25 mg/kg SCH23390, the dopamine D1 receptors (D1R) antagonist, produced significant decreases in time spent in the hidden zone. There were insignificant changes in time spent in the hidden zone for guinea pigs treated with 7.5 mg SKF38393 (D1R agonist), 1.0 mg/kg sulpiride (D2R antagonist), and 1.0 or 10.0 mg/kg methamphetamine. Locomotor activity profiles were unchanged after injections of saline, SKF38393, SCH23390, and sulpiride. By contrast, a single injection or repeated administration for 7 days of low-dose methamphetamine induced transient hyperactivity but this declined to baseline levels over the 22-h observation period. Guinea pigs treated with high-dose methamphetamine displayed sustained hyperactivity and travelled significantly greater distances over the circadian cycle. Subsequent 7-day treatment with high-dose methamphetamine induced motor sensitization and significant increases in total distances moved relative to single drug injections or saline controls. These results highlight the versatility and unique features of the guinea pig for studying brain-behavior interactions.
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Affiliation(s)
- Kiera-Nicole Lee
- Department of Neuroscience and Pharmacology, Meharry Medical College, Nashville, Tennessee, 37208
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van der Schaaf ME, Zwiers MP, van Schouwenburg MR, Geurts DEM, Schellekens AFA, Buitelaar JK, Verkes RJ, Cools R. Dopaminergic drug effects during reversal learning depend on anatomical connections between the orbitofrontal cortex and the amygdala. Front Neurosci 2013; 7:142. [PMID: 23966907 PMCID: PMC3743215 DOI: 10.3389/fnins.2013.00142] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 07/21/2013] [Indexed: 11/26/2022] Open
Abstract
Dopamine in the striatum is known to be important for reversal learning. However, the striatum does not act in isolation and reversal learning is also well-accepted to depend on the orbitofrontal cortex (OFC) and the amygdala. Here we assessed whether dopaminergic drug effects on human striatal BOLD signaling during reversal learning is associated with anatomical connectivity in an orbitofrontal-limbic-striatal network, as measured with diffusion tensor imaging (DTI). By using a fiber-based approach, we demonstrate that dopaminergic drug effects on striatal BOLD signal varied as a function of fractional anisotropy (FA) in a pathway connecting the OFC with the amygdala. Moreover, our experimental design allowed us to establish that these white-matter dependent drug effects were mediated via D2 receptors. Thus, white matter dependent effects of the D2 receptor agonist bromocriptine on striatal BOLD signal were abolished by co-administration with the D2 receptor antagonist sulpiride. These data provide fundamental insight into the mechanism of action of dopaminergic drug effects during reversal learning. In addition, they may have important clinical implications by suggesting that white matter integrity can help predict dopaminergic drug effects on brain function, ultimately contributing to individual tailoring of dopaminergic drug treatment strategies in psychiatry.
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Affiliation(s)
- Marieke E van der Schaaf
- Centre for Cognitive Neuroimaging, Donders Institute for Brain, Cognition, and Behaviour, Radboud University Nijmegen Nijmegen, Netherlands ; Department of Psychiatry, Radboud University Nijmegen Medical Centre Nijmegen, Netherlands
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Helmy SA. Therapeutic drug monitoring and pharmacokinetic compartmental analysis of sulpiride double-peak absorption profile after oral administration to human volunteers. Biopharm Drug Dispos 2013; 34:288-301. [PMID: 23585286 DOI: 10.1002/bdd.1843] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 03/17/2013] [Accepted: 04/05/2013] [Indexed: 11/06/2022]
Abstract
BACKGROUND The pharmacokinetics of oral drugs that exhibit double peaks cannot be described adequately by using conventional compartmental models. OBJECTIVE The aim of this study was to describe the double-peak plasma pharmacokinetic profile of sulpiride after oral administration to healthy volunteers based on physiological and biopharmaceutical considerations. METHODS A single 100 mg dose of sulpiride was given to 16 healthy volunteers. Blood samples were drawn at different times and analysed by a validated HPLC assay method. Plasma profiles were evaluated by non-compartmental and compartmental approaches. RESULTS The non-compartmental parameters determined were k (0.079±0.008 h(-1)), t1/2 (9.0±2.9 h), Vd /F (330.5±87.3 L), Cl/F (38.2±9.8 L/h) and AUC0→∞ (1402.5±404.7 ng.h/mL). The compartmental analysis was described appropriately using a two-compartment body model, with first order absorption from two different sites in the gut. The parameters determined were k21 (0.68±0.2 h(-1)), ka1 (0.7±0.27 h(-1)), ka2 (2.7±1.8 h(-1)) Vc/F (45.1±15.7 L), α (33.3±1.5 h(-1)), β (0.11±0.03 h(-1)) and time for the beginning of the absorption from the second site (4.4±2.1 h). CONCLUSION The developed analytical method was suitable for use in pharmacokinetic studies and therapeutic drug monitoring implementation. Sulpiride was well tolerated by the patients without any serious adverse events being observed. The double peaks in the serum concentration-time profiles could be due to differential rates of absorption along the gastrointestinal tract. The discontinuous absorption model with two sites of absorption was adequate to describe the double-peak of the sulpiride plasma profile. ClinicalTrials. gov identifiers: NCT01777685.
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Affiliation(s)
- Sally A Helmy
- Department of Pharmaceutics, Faculty of Pharmacy, Damanhour University, Damanhour, Egypt.
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Abstract
The objective of this study is to compare the effectiveness among sulpiride, risperidone, olanzapine, and haloperidol by evaluating the persistence of drug use. A retrospective cohort study was conducted by analyzing the National Health Insurance Research Database of Taiwan. Patients with schizophrenia aged 18-65 years and newly prescribed with a single oral antipsychotic medication between years 2003 and 2008 were included. The primary outcome was the persistence of antipsychotic agents by calculating the treatment duration till treatment changed. All defined treatment changes were also analyzed separately, including discontinuation, switching, augmentation, and hospitalization. A total of 1324 eligible patients were included, with an average age of 36 years old and approximately 45% of them were female. The most prevalent antipsychotic use was risperidone (42.1%), followed by sulpiride (36.0%), haloperidol (14.2%), and olanzapine (7.7%). After adjusting for patient demographics, mental illness characteristics, and propensity score, the Cox regression models found that the risk of nonpersistence was significantly higher in patients receiving risperidone (hazard ratio [HR], 1.22; 95% CI, 1.06-1.40), haloperidol (HR, 1.98; 95% CI, 1.63-2.40), and olanzapine (HR, 1.34; 95% CI, 1.07-1.68), as compared with sulpiride, suggesting the effectiveness of sulpiride was better than the other 3 antipsychotics. Therefore, this study would provide strong grounds for a properly conducted randomized controlled trial of the clinical- and cost-effectiveness of sulpiride vs atypical antipsychotics.
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Affiliation(s)
- Edward Chia-Cheng Lai
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan
| | - Chia-Hsien Chang
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan
| | - Yea-Huei Kao Yang
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, No.1, University Road, Tainan 701, Taiwan,Health Outcome Research Center, National Cheng Kung University, Tainan, Taiwan,To whom correspondence should be addressed; tel: 886-6-2353535, ext. 5680, fax: 886-6-2373149, e-mail:
| | - Swu-Jane Lin
- Department of Pharmacy Administration, College of Pharmacy, University of Illinois at Chicago, Chicago, IL
| | - Chia-Yin Lin
- Department of Pharmacy Services, National Cheng Kung University Hospital, Tainan, Taiwan
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Chavanon ML, Wacker J, Stemmler G. Paradoxical dopaminergic drug effects in extraversion: dose- and time-dependent effects of sulpiride on EEG theta activity. Front Hum Neurosci 2013; 7:117. [PMID: 23580360 PMCID: PMC3619250 DOI: 10.3389/fnhum.2013.00117] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 03/16/2013] [Indexed: 11/25/2022] Open
Abstract
Dopaminergic drugs frequently produce paradoxical effects depending on baseline performance levels, genotype, or personality traits. The present study for the first time aimed to specify the mechanisms underlying such opposite effects using the following recently reported scenario as an example: depending on the personality trait agentic extraversion (agentic facet, aE; i.e., assertiveness, dominance, ambition, positive emotionality) the selective dopamine D2 receptor antagonist sulpiride (200 mg) had opposite effects on resting posterior vs. anterior theta activity in the electroencephalogram (EEG). In order to better describe these opposite pharmaco-EEG effects and to generate hypotheses regarding the underlying mechanisms, we measured the EEG intermittently over 5 h in 80 healthy male volunteers extremely high or low in aE who had received either placebo or one of three doses of sulpiride (50, 200, or 400 mg). The findings suggest a model postulating stronger pre- vs. postsynaptic subreceptor effects in high aE individuals compared to low aE individuals. Future studies may now systematically apply the model to other examples of paradoxical dopaminergic drug effects and examine the molecular basis of individual differences in pre- vs. postsynaptic dopamine D2 subreceptor sensitivities and densities.
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Khan MN, Jan MR, Shah J, Lee SH, Kim YH. Determination of sulpiride in pharmaceutical preparations and biological fluids using a Cr (III) enhanced chemiluminescence method. LUMINESCENCE 2012; 28:915-21. [PMID: 23225777 DOI: 10.1002/bio.2458] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2012] [Revised: 09/10/2012] [Accepted: 10/26/2012] [Indexed: 11/11/2022]
Abstract
A highly sensitive and simple method for identifying sulpiride in pharmaceutical formulations and biological fluids is presented. The method is based on increased chemiluminescence (CL) intensity of a luminol-H2O2 system in response to the addition of Cr (III) under alkaline conditions. The CL intensity of the luminol-H2O2-Cr (III) system was greatly enhanced by the addition of sulpiride and the CL intensity was proportional to the concentration of sulpiride in a sample solution. Various parameters affecting the CL intensity were systematically investigated and optimized for determination of the sulpiride in a sample. Under the optimum conditions, the CL intensity was proportional to the concentration of sulpiride in the range of 0.068-4.0 µg/mL, with a good correlation coefficient of 0.997. The limit of detection (LOD) and limit of quantification (LOQ) were found to be 8.50 × 10(-6) µg/mL and 2.83 × 10(-5) µg/mL, respectively. The method presented here produced good reproducibility with a relative standard deviation (RSD) of 2.70% (n = 7). The effects of common excipients and metal ions were studied for their interference effect. The method was validated statistically through recovery studies and successfully applied for the determination of sulpiride in pure form, pharmaceutical preparations and spiked human plasma samples. The percentage recoveries were found to range from 99.10 to 100.05% for pure form, 98.12 to 100.18% for pharmaceutical preparations and 97.9 to 101.4% for spiked human plasma.
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Affiliation(s)
- Muhammad Naeem Khan
- Institute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan; Department of Chemistry, Kyungpook National University, Daegu, 702-701, South Korea
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van der Schaaf ME, van Schouwenburg MR, Geurts DEM, Schellekens AFA, Buitelaar JK, Verkes RJ, Cools R. Establishing the dopamine dependency of human striatal signals during reward and punishment reversal learning. ACTA ACUST UNITED AC 2012. [PMID: 23183711 DOI: 10.1093/cercor/bhs344] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Drugs that alter dopamine transmission have opposite effects on reward and punishment learning. These opposite effects have been suggested to depend on dopamine in the striatum. Here, we establish for the first time the neurochemical specificity of such drug effects, during reward and punishment learning in humans, by adopting a coadministration design. Participants (N = 22) were scanned on 4 occasions using functional magnetic resonance imaging, following intake of placebo, bromocriptine (dopamine-receptor agonist), sulpiride (dopamine-receptor antagonist), or a combination of both drugs. A reversal-learning task was employed, in which both unexpected rewards and punishments signaled reversals. Drug effects were stratified with baseline working memory to take into account individual variations in drug response. Sulpiride induced parallel span-dependent changes on striatal blood oxygen level-dependent (BOLD) signal during unexpected rewards and punishments. These drug effects were found to be partially dopamine-dependent, as they were blocked by coadministration with bromocriptine. In contrast, sulpiride elicited opposite effects on behavioral measures of reward and punishment learning. Moreover, sulpiride-induced increases in striatal BOLD signal during both outcomes were associated with behavioral improvement in reward versus punishment learning. These results provide a strong support for current theories, suggesting that drug effects on reward and punishment learning are mediated via striatal dopamine.
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Affiliation(s)
- Marieke E van der Schaaf
- Donders Institute for Brain Cognition and Behaviour, Radboud University Nijmegen, Nijmegen, the Netherlands and
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Lisek R, Xu W, Yuvasheva E, Chiu YT, Reitz AB, Liu-Chen LY, Rawls SM. Mephedrone ('bath salt') elicits conditioned place preference and dopamine-sensitive motor activation. Drug Alcohol Depend 2012; 126:257-62. [PMID: 22652295 PMCID: PMC3478431 DOI: 10.1016/j.drugalcdep.2012.04.021] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 04/09/2012] [Accepted: 04/21/2012] [Indexed: 10/28/2022]
Abstract
Abuse of a dangerous street drug called mephedrone (4-methylmethcathinone) has become commonplace in the United States. Mephedrone is hypothesized to possess abuse liability, share pharmacological properties with psychostimulants, and display toxicity that has been linked to fatalities and non-fatal overdoses. Knowledge about the pharmacology of mephedrone has been obtained primarily from surveys of drug abusers and emergency room visits rather than experimental studies. The present study used motor activity and conditioned place preference (CPP) assays to investigate behavioral effects of mephedrone. Acute mephedrone (3, 5, 10, 30 mg/kg, ip) administration increased ambulatory activity in rats. Mephedrone (5 mg/kg, ip)-induced ambulation was inhibited by pretreatment with a dopamine D1 receptor antagonist (SCH 23390) (0.5, 1, 2 mg/kg, ip) and enhanced by pretreatment with a dopamine D2 receptor antagonist (sulpiride) (2 mg/kg, ip). Rats injected for 5 days with low dose mephedrone (0.5 mg/kg, ip) and then challenged with mephedrone (0.5 mg/kg, ip) following 10 days of abstinence displayed sensitization of ambulatory activity. In CPP experiments, mephedrone (30 mg/kg, ip) conditioning elicited a preference shift in both rats and mice. The CPP and dopamine-sensitive motor activation produced by mephedrone is suggestive of abuse liability and indicates commonalities between the neuropharmacological profiles of mephedrone and established drugs of abuse.
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Affiliation(s)
- Renata Lisek
- Department of Pharmacology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA
| | - Wei Xu
- Department of Pharmacology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA
| | - Ekaterina Yuvasheva
- Department of Pharmacology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA
| | - Yi-Ting Chiu
- Department of Pharmacology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA
| | | | - Lee-Yuan Liu-Chen
- Department of Pharmacology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA
| | - Scott M. Rawls
- Department of Pharmacology and Center for Substance Abuse Research, Temple University School of Medicine, Philadelphia, PA
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Shah J, Jan MR, Khan MN, Shah S. Spectrofluorimetric method for the determination of sulpiride in pharmaceutical preparations and human plasma through derivatization with 2-cyanoacetamide. LUMINESCENCE 2012; 28:719-25. [PMID: 22987788 DOI: 10.1002/bio.2422] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 07/18/2012] [Accepted: 07/18/2012] [Indexed: 11/06/2022]
Abstract
A sensitive and accurate spectrofluorimetric method has been developed for the determination of sulpiride in pharmaceutical preparations and human plasma. The developed method is based on the derivatization reaction of 2-cyanoacetamide with sulpiride in 30% ammonical solution. The fluorescent derivatized reaction product exhibited maximum fluorescence intensity at 379 nm after excitation at 330 nm. The optimum conditions for derivatization reactions were studied and the fluorescence intensity versus concentration plot was found to be linear over the concentration range 0.2-20.0 µg/mL with a correlation coefficient of 0.9985. The limit of detection (LOD) and limit of quantification (LOQ) were found to be 0.82 and 2.73 ng/mL, respectively. The proposed method was validated according to ICH guidelines. The effects of common excipients and co-administered drugs were also studied. The accuracy of the method was checked using the standard addition method and percent recoveries were found to be in the range of 99.00-101.25% for pharmaceutical preparations and 97.00-97.80% for spiked human plasma. The method was successfully applied to commercial formulations and the results obtained for the proposed method were compared with a high-performance liquid chromatography reference method and statistically evaluated using the Student's t-test for accuracy and the variance ratio F-test for precision. A reaction pathway was also proposed.
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Affiliation(s)
- Jasmin Shah
- Institute of Chemical Sciences, University of Peshawar, Pakistan
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Jindal V, Dhingra D, Sharma S, Parle M, Harna RK. Hypolipidemic and weight reducing activity of the ethanolic extract of Tamarindus indica fruit pulp in cafeteria diet- and sulpiride-induced obese rats. J Pharmacol Pharmacother 2011; 2:80-4. [PMID: 21772765 PMCID: PMC3127355 DOI: 10.4103/0976-500x.81896] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Objectives: To investigate the effect of ethanolic extract of fruit pulp of Tamarindus indica Linn. (Family: Caesalpiniaceae) on obesity in rats using cafeteria diet-induced obesity and antipsychotic drug (sulpiride)-induced obesity. Materials and Methods: Cafeteria dietwas administered for 40 successive days to male Wistar rats and sulpiride (20 mg/kg, i.p.) was administered for 28 successive days to female Wistar rats. In separate groups of animals, the ethanolic extract (50 and 100 mg/kg p.o.) of Tamarindus indica fruit was administered along with cafeteria diet for 40 successive days to Wistar male rats and along with sulpiride for 28 successive days to Wistar female rats. Results: Cafeteria diet alone significantly increased body weight, serum total cholesterol, triglycerides, and glucose levels and decreased HDL cholesterol in male rats as compared to control. Sulpiride per se significantly increased the levels of glucose, triglycerides, cholesterol and there was no significant effect on HDL-cholesterol in female rats as compared to control. Ethanolic extract showed a significant decrease in body weight, serum cholesterol, and triglycerides and a significant increase in HDL-cholesterol in cafeteria diet- and sulpiride-induced obese rats as compared to their respective control groups. Conclusions: Thus, the ethanolic extract of Tamarindus indica fruit pulp showed a significant weight-reducing and hypolipidemic activity in cafeteria diet- and sulpiride-induced obese rats.
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Affiliation(s)
- Vaneeta Jindal
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science and Technology, Hisar - 125 001, India
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Monte-Silva K, Ruge D, Teo JT, Paulus W, Rothwell JC, Nitsche MA. D2 receptor block abolishes θ burst stimulation-induced neuroplasticity in the human motor cortex. Neuropsychopharmacology 2011; 36:2097-102. [PMID: 21697824 PMCID: PMC3158306 DOI: 10.1038/npp.2011.100] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Dopamine (DA) is a neurotransmitter with an important influence on learning and memory, which is thought to be due to its modulatory effect on plasticity at central synapses, which in turn depends on activation of D1 and D2 receptors. Methods of brain stimulation (transcranial direct current stimulation, tDCS; paired associative stimulation, PAS) lead to after-effects on cortical excitability that are thought to resemble long-term potentization (LTP)/long-term depression (LTD) in reduced preparations. In a previous study we found that block of D2 receptors abolished plasticity induced by tDCS but had no effect on the facilitatory plasticity induced by PAS. We postulated that the different effect of D2 receptor block on tDCS- and PAS-induced plasticity may be due to the different focality and associativity of the stimulation techniques. However, alternative explanations for this difference could not be ruled out. tDCS also differs from PAS in other aspects, as tDCS induces plasticity by subthreshold neuronal activation, modulating spontaneous activity, whereas PAS induces plasticity via phasic suprathreshold stimulation. The present study in 12 volunteers examined effects of D2 receptor blockade (sulpiride (SULP) 400 mg), on the LTP/LTD-like effects of theta burst transcranial magnetic stimulation (TBS), which has less restricted effects on cortical synapses than that of PAS, and does not induce associative plasticity, similar to tDCS, but on the other hand induces cortical excitability shifts by suprathreshold (rhythmic) activation of cortical neurons similarly to PAS. Administration of SULP blocked both the excitatory and inhibitory effects of intermittent (iTBS) and continuous TBS (cTBS), respectively. As the reduced response to TBS following SULP resembles its effect on tDCS, the results support an effect of DA on plasticity, which might be related to the focality and associativity of the plasticity induced.
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Affiliation(s)
- Katia Monte-Silva
- Department of Clinical Neurophysiology, Georg-August University, Göttingen, Germany,Department of Physical Therapy, Federal University of Pernambuco, Recife, Brazil
| | - Diane Ruge
- Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, London, UK
| | - James T Teo
- Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, London, UK
| | - Walter Paulus
- Department of Clinical Neurophysiology, Georg-August University, Göttingen, Germany
| | - John C Rothwell
- Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, London, UK
| | - Michael A Nitsche
- Department of Clinical Neurophysiology, Georg-August University, Göttingen, Germany,Department of Clinical Neurophysiology, Georg-August University, Robert-Koch-Strasse 40, 37075 Göttingen, Germany, Tel: +49 55 139 9571, Fax: +49 55 139 8621, E-mail:
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