1
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Manduca A, Buzzelli V, Rava A, Feo A, Carbone E, Schiavi S, Peruzzi B, D'Oria V, Pezzullo M, Pasquadibisceglie A, Polticelli F, Micale V, Kuchar M, Trezza V. Cannabidiol and positive effects on object recognition memory in an in vivo model of Fragile X Syndrome: Obligatory role of hippocampal GPR55 receptors. Pharmacol Res 2024; 203:107176. [PMID: 38583687 DOI: 10.1016/j.phrs.2024.107176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 04/03/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
Cannabidiol (CBD), a non-psychotomimetic constituent of Cannabis sativa, has been recently approved for epileptic syndromes often associated with Autism spectrum disorder (ASD). However, the putative efficacy and mechanism of action of CBD in patients suffering from ASD and related comorbidities remain debated, especially because of the complex pharmacology of CBD. We used pharmacological, immunohistochemical and biochemical approaches to investigate the effects and mechanisms of action of CBD in the recently validated Fmr1-Δexon 8 rat model of ASD, that is also a model of Fragile X Syndrome (FXS), the leading monogenic cause of autism. CBD rescued the cognitive deficits displayed by juvenile Fmr1-Δexon 8 animals, without inducing tolerance after repeated administration. Blockade of CA1 hippocampal GPR55 receptors prevented the beneficial effect of both CBD and the fatty acid amide hydrolase (FAAH) inhibitor URB597 in the short-term recognition memory deficits displayed by Fmr1-Δexon 8 rats. Thus, CBD may exert its beneficial effects through CA1 hippocampal GPR55 receptors. Docking analysis further confirmed that the mechanism of action of CBD might involve competition for brain fatty acid binding proteins (FABPs) that deliver anandamide and related bioactive lipids to their catabolic enzyme FAAH. These findings demonstrate that CBD reduced cognitive deficits in a rat model of FXS and provide initial mechanistic insights into its therapeutic potential in neurodevelopmental disorders.
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Affiliation(s)
- Antonia Manduca
- Dept. Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy; Dept. Science, Roma Tre University, Rome, Italy; Neuroendocrinology, Metabolism and Neuropharmacology Unit, IRCCS Fondazione Santa Lucia, Rome, Italy.
| | | | | | | | | | | | - Barbara Peruzzi
- Bone Physiopathology Research Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Valentina D'Oria
- Confocal Microscopy Core Facility, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Marco Pezzullo
- Histology Core Facility, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | | | - Vincenzo Micale
- Dept. Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Martin Kuchar
- Forensic Laboratory of Biologically Active Substances, Dept. Chemistry of Natural Compounds, University of Chemistry and Technologies, Prague, Czech Republic; Psychedelic Research Center, National Institute of Mental Health, Klecany, Czech Republic
| | - Viviana Trezza
- Dept. Science, Roma Tre University, Rome, Italy; Neuroendocrinology, Metabolism and Neuropharmacology Unit, IRCCS Fondazione Santa Lucia, Rome, Italy.
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2
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Takaba R, Ibi D, Yoshida K, Hosomi E, Kawase R, Kitagawa H, Goto H, Achiwa M, Mizutani K, Maeda K, González-Maeso J, Kitagaki S, Hiramatsu M. Ethopharmacological evaluation of antidepressant-like effect of serotonergic psychedelics in C57BL/6J male mice. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:3019-3035. [PMID: 37874338 DOI: 10.1007/s00210-023-02778-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/07/2023] [Indexed: 10/25/2023]
Abstract
Serotonergic psychedelics such as psilocybin, lysergic acid diethylamide, and DOI exert a hallucinatory effect through serotonin 5-HT2A receptor (5-HT2A) activation. Recent studies have revealed that serotonergic psychedelics have therapeutic potential for neuropsychiatric disorders, including major depressive and anxiety-related disorders. However, the involvement of 5-HT2A in mediating the therapeutic effects of these drugs remains unclear. In this study, we ethopharmacologically analyzed the role of 5-HT2A in the occurrence of anxiolytic- and antidepressant-like effects of serotonergic psychedelics such as psilocin, an active metabolite of psilocybin, DOI, and TCB-2 in mice 24 h post-treatment. Mice with acute intraperitoneal psychedelic treatment exhibited significantly shorter immobility times in the forced swimming test (FST) and tail-suspension test (TST) than vehicle-treated control mice. These effects were eliminated by pretreatment with volinanserin, a 5-HT2A antagonist. Surprisingly, the decreasing immobility time in the FST in response to acute psilocin treatment was sustained for at least three weeks. In the novelty-suppressed feeding test (NSFT), the latency to feed, an indicator of anxiety-like behavior, was decreased by acute administration of psilocin; however, pretreatment with volinanserin did not diminish this effect. In contrast, DOI and TCB-2 did not affect the NSFT performance in mice. Furthermore, psilocin, DOI, and TCB-2 treatment did not affect the spontaneous locomotor activity or head-twitch response, a hallucination-like behavior in rodents. These results suggest that 5-HT2A contributes to the antidepressant effects of serotonergic psychedelics rather than anxiolytic effects.
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Affiliation(s)
- Rika Takaba
- Department of Chemical Pharmacology, Graduate School of Pharmacy, Meijo University, Nagoya, Japan, 468-8502.
| | - Daisuke Ibi
- Department of Chemical Pharmacology, Graduate School of Pharmacy, Meijo University, Nagoya, Japan, 468-8502.
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502.
| | - Keisuke Yoshida
- Department of Medical Chemistry, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Eri Hosomi
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Ririna Kawase
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Hiroko Kitagawa
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Hirotaka Goto
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Mizuki Achiwa
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Kento Mizutani
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Kyosuke Maeda
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Javier González-Maeso
- Department of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA, 23298, USA
| | - Shinji Kitagaki
- Department of Medical Chemistry, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502
| | - Masayuki Hiramatsu
- Department of Chemical Pharmacology, Graduate School of Pharmacy, Meijo University, Nagoya, Japan, 468-8502.
- Department of Chemical Pharmacology, Faculty of Pharmacy, Meijo University, Nagoya, Japan, 468-8502.
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3
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Chen Z, Wang X, Zhang S, Han F. Neuroplasticity of children in autism spectrum disorder. Front Psychiatry 2024; 15:1362288. [PMID: 38726381 PMCID: PMC11079289 DOI: 10.3389/fpsyt.2024.1362288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Accepted: 04/12/2024] [Indexed: 05/12/2024] Open
Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder that encompasses a range of symptoms including difficulties in verbal communication, social interaction, limited interests, and repetitive behaviors. Neuroplasticity refers to the structural and functional changes that occur in the nervous system to adapt and respond to changes in the external environment. In simpler terms, it is the brain's ability to learn and adapt to new environments. However, individuals with ASD exhibit abnormal neuroplasticity, which impacts information processing, sensory processing, and social cognition, leading to the manifestation of corresponding symptoms. This paper aims to review the current research progress on ASD neuroplasticity, focusing on genetics, environment, neural pathways, neuroinflammation, and immunity. The findings will provide a theoretical foundation and insights for intervention and treatment in pediatric fields related to ASD.
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Affiliation(s)
- Zilin Chen
- Department of Pediatrics, Guang’anmen Hospital, China Academy of Traditional Chinese Medicine, Beijing, China
| | - Xu Wang
- Experiment Center of Medical Innovation, The First Hospital of Hunan University of Chinese Medicine, Changsha, Hunan, China
| | - Si Zhang
- Department of Pediatrics, Guang’anmen Hospital, China Academy of Traditional Chinese Medicine, Beijing, China
| | - Fei Han
- Department of Pediatrics, Guang’anmen Hospital, China Academy of Traditional Chinese Medicine, Beijing, China
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4
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Ntoulas G, Brakatselos C, Nakas G, Asprogerakas MZ, Delis F, Leontiadis LJ, Trompoukis G, Papatheodoropoulos C, Gkikas D, Valakos D, Vatsellas G, Politis PK, Polissidis A, Antoniou K. Multi-level profiling of the Fmr1 KO rat unveils altered behavioral traits along with aberrant glutamatergic function. Transl Psychiatry 2024; 14:104. [PMID: 38378836 PMCID: PMC10879511 DOI: 10.1038/s41398-024-02815-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 01/19/2024] [Accepted: 02/01/2024] [Indexed: 02/22/2024] Open
Abstract
Fragile X syndrome (FXS) is the most common cause of inherited intellectual disabilities and the most prevalent monogenic cause of autism. Although the knockout (KO) of the Fmr1 gene homolog in mice is primarily used for elucidating the neurobiological substrate of FXS, there is limited association of the experimental data with the pathophysiological condition in humans. The use of Fmr1 KO rats offers additional translational validity in this regard. Therefore, we employed a multi-level approach to study the behavioral profile and the glutamatergic and GABAergic neurotransmission status in pathophysiology-associated brain structures of Fmr1 KO rats, including the recordings of evoked and spontaneous field potentials from hippocampal slices, paralleled with next-generation RNA sequencing (RNA-seq). We found that these rats exhibit hyperactivity and cognitive deficits, along with characteristic bidirectional glutamatergic and GABAergic alterations in the prefrontal cortex and the hippocampus. These results are coupled to affected excitability and local inhibitory processes in the hippocampus, along with a specific transcriptional profile, highlighting dysregulated hippocampal network activity in KO rats. Overall, our data provide novel insights concerning the biobehavioral profile of FmR1 KO rats and translationally upscales our understanding on pathophysiology and symptomatology of FXS syndrome.
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Affiliation(s)
- George Ntoulas
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences University of Ioannina, Ioannina, Greece
| | - Charalampos Brakatselos
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences University of Ioannina, Ioannina, Greece
| | - Gerasimos Nakas
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences University of Ioannina, Ioannina, Greece
| | - Michail-Zois Asprogerakas
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences University of Ioannina, Ioannina, Greece
| | - Foteini Delis
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences University of Ioannina, Ioannina, Greece
| | - Leonidas J Leontiadis
- Laboratory of Neurophysiology, Department of Medicine, University of Patras, Rion, Greece
| | - George Trompoukis
- Laboratory of Neurophysiology, Department of Medicine, University of Patras, Rion, Greece
| | | | - Dimitrios Gkikas
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Dimitrios Valakos
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Giannis Vatsellas
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Panagiotis K Politis
- Center of Basic Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Alexia Polissidis
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences University of Ioannina, Ioannina, Greece
- Center of Clinical, Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Katerina Antoniou
- Department of Pharmacology, Faculty of Medicine, School of Health Sciences University of Ioannina, Ioannina, Greece.
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5
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Rodnyy AY, Kondaurova EM, Tsybko AS, Popova NK, Kudlay DA, Naumenko VS. The brain serotonin system in autism. Rev Neurosci 2024; 35:1-20. [PMID: 37415576 DOI: 10.1515/revneuro-2023-0055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 06/10/2023] [Indexed: 07/08/2023]
Abstract
Autism spectrum disorders (ASDs) are among the most common neurodevelopmental diseases. These disorders are characterized by lack of social interaction, by repetitive behavior, and often anxiety and learning disabilities. The brain serotonin (5-HT) system is known to be crucially implicated in a wide range of physiological functions and in the control of different kinds of normal and pathological behavior. A growing number of studies indicate the involvement of the brain 5-HT system in the mechanisms underlying both ASD development and ASD-related behavioral disorders. There are some review papers describing the role of separate key players of the 5-HT system in an ASD and/or autistic-like behavior. In this review, we summarize existing data on the participation of all members of the brain 5-HT system, namely, 5-HT transporter, tryptophan hydroxylase 2, MAOA, and 5-HT receptors, in autism in human and various animal models. Additionally, we describe the most recent studies involving modern techniques for in vivo regulation of gene expression that are aimed at identifying exact roles of 5-HT receptors, MAOA, and 5-HT transporter in the mechanisms underlying autistic-like behavior. Altogether, results of multiple research articles show that the brain 5-HT system intimately partakes in the control of some types of ASD-related behavior, and that specific changes in a function of a certain 5-HT receptor, transporter, and/or enzyme may normalize this aberrant behavior. These data give hope that some of clinically used 5-HT-related drugs have potential for ASD treatment.
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Affiliation(s)
- Alexander Ya Rodnyy
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk 630090, Russia
| | - Elena M Kondaurova
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk 630090, Russia
| | - Anton S Tsybko
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk 630090, Russia
| | - Nina K Popova
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk 630090, Russia
| | - Dmitry A Kudlay
- NRC Institute of Immunology FMBA of Russia, Kashirskoe Highway 24, Moscow 115522, Russia
- Sechenov's University, 8-2 Trubetskaya Str., Moscow 119991, Russia
| | - Vladimir S Naumenko
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, Akad. Lavrentyeva Ave. 10, Novosibirsk 630090, Russia
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6
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Gattuso JJ, Wilson C, Hannan AJ, Renoir T. Psilocybin as a lead candidate molecule in preclinical therapeutic studies of psychiatric disorders: A systematic review. J Neurochem 2023. [PMID: 38019032 DOI: 10.1111/jnc.16017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/02/2023] [Accepted: 11/10/2023] [Indexed: 11/30/2023]
Abstract
Psilocybin is the main psychoactive compound found in hallucinogenic/magic mushrooms and can bind to both serotonergic and tropomyosin receptor kinase b (TrkB) receptors. Psilocybin has begun to show efficacy for a range of neuropsychiatric conditions, including treatment-resistant depression and anxiety disorders; however, neurobiological mechanisms are still being elucidated. Clinical research has found that psilocybin can alter functional connectivity patterns in human brains, which is often associated with therapeutic outcomes. However, preclinical research affords the opportunity to assess the potential cellular mechanisms by which psilocybin may exert its therapeutic effects. Preclinical rodent models can also facilitate a more tightly controlled experimental context and minimise placebo effects. Furthermore, where there is a rationale, preclinical researchers can investigate psilocybin administration in neuropsychiatric conditions that have not yet been researched clinically. As a result, we have systematically reviewed the knowledge base, identifying 82 preclinical studies which were screened based on specific criteria. This resulted in the exclusion of 44 articles, with 34 articles being included in the main review and another 2 articles included as Supporting Information materials. We found that psilocybin shows promise as a lead candidate molecule for treating a variety of neuropsychiatric conditions, albeit showing the most efficacy for depression. We discuss the experimental findings, and identify possible mechanisms whereby psilocybin could invoke therapeutic changes. Furthermore, we critically evaluate the between-study heterogeneity and possible future research avenues. Our review suggests that preclinical rodent models can provide valid and translatable tools for researching novel psilocybin-induced molecular and cellular mechanisms, and therapeutic outcomes.
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Affiliation(s)
- James J Gattuso
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne, Parkville, Victoria, Australia
| | - Carey Wilson
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne, Parkville, Victoria, Australia
| | - Anthony J Hannan
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne, Parkville, Victoria, Australia
- Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria, Australia
| | - Thibault Renoir
- Florey Institute of Neuroscience and Mental Health, Melbourne Brain Centre, University of Melbourne, Parkville, Victoria, Australia
- Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Parkville, Victoria, Australia
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7
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Tyagi R, Saraf TS, Canal CE. The Psychedelic N, N-Dipropyltryptamine Prevents Seizures in a Mouse Model of Fragile X Syndrome via a Mechanism that Appears Independent of Serotonin and Sigma1 Receptors. ACS Pharmacol Transl Sci 2023; 6:1480-1491. [PMID: 37854624 PMCID: PMC10580393 DOI: 10.1021/acsptsci.3c00137] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Indexed: 10/20/2023]
Abstract
The serotonergic psychedelic psilocybin shows efficacy in treating neuropsychiatric disorders, though the mechanism(s) underlying its therapeutic effects remain unclear. We show that a similar psychedelic tryptamine, N,N-dipropyltryptamine (DPT), completely prevents audiogenic seizures (AGS) in an Fmr1 knockout mouse model of fragile X syndrome at a 10 mg/kg dose but not at lower doses (3 or 5.6 mg/kg). Despite showing in vitro that DPT is a serotonin 5-HT2A, 5-HT1B, and 5-HT1A receptor agonist (with that rank order of functional potency, determined with TRUPATH Gα/βγ biosensors), pretreatment with selective inhibitors of 5-HT2A/2C, 5-HT1B, or 5-HT1A receptors did not block DPT's antiepileptic effects; a pan-serotonin receptor antagonist was also ineffective. Because 5-HT1A receptor activation blocks AGS in Fmr1 knockout mice, we performed a dose-response experiment to evaluate DPT's engagement of 5-HT1A receptors in vivo. DPT elicited 5-HT1A-dependent effects only at doses greater than 10 mg/kg, further supporting that DPT's antiepileptic effects were not 5-HT1A-mediated. We also observed that the selective sigma1 receptor antagonist, NE-100, did not impact DPT's antiepileptic effects, suggesting DPT engagement of sigma1 receptors was not a crucial mechanism. Separately, we observed that DPT and NE-100 at high doses caused convulsions on their own that were qualitatively distinct from AGS. In conclusion, DPT dose-dependently blocked AGS in Fmr1 knockout mice, but neither serotonin nor sigma1 receptor antagonists prevented this action. Thus, DPT might have neurotherapeutic effects independent of its serotonergic psychedelic properties. However, DPT also caused seizures at high doses, showing that DPT has complex dose-dependent in vivo polypharmacology.
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Affiliation(s)
- Richa Tyagi
- Department of Pharmaceutical
Sciences, College of Pharmacy, Mercer University, 3001 Mercer University Drive, Atlanta, Georgia 30341, United States
| | - Tanishka S. Saraf
- Department of Pharmaceutical
Sciences, College of Pharmacy, Mercer University, 3001 Mercer University Drive, Atlanta, Georgia 30341, United States
| | - Clinton E. Canal
- Department of Pharmaceutical
Sciences, College of Pharmacy, Mercer University, 3001 Mercer University Drive, Atlanta, Georgia 30341, United States
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8
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Syed OA, Tsang B, Petranker R, Gerlai R. A perspective on psychedelic teratogenicity: the utility of zebrafish models. Trends Pharmacol Sci 2023; 44:664-673. [PMID: 37659901 DOI: 10.1016/j.tips.2023.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 08/03/2023] [Accepted: 08/07/2023] [Indexed: 09/04/2023]
Abstract
Psychedelic drugs have experienced an unprecedented surge in recreational use within the past few years. Among recreational users, the risks of psychedelic use by pregnant and breastfeeding women are severely understudied and there is little information on the potential teratogenic effects of these drugs. We provide an overview of the previous data on psychedelic teratogenicity from rodent studies and human surveys, discuss their limitations, and propose the utility of the zebrafish as a potential effective model for investigating psychedelic teratogenicity. Recent years have validated the use of zebrafish in the study of fetal exposure and developmental biology; we highlight these properties of the zebrafish for its suitability in psychedelic toxicity research.
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Affiliation(s)
- Omer A Syed
- Department of Biology, University of Toronto Mississauga, Ontario, Canada.
| | - Benjamin Tsang
- Department of Cell & Systems Biology, University of Toronto, Ontario, Canada.
| | - Rotem Petranker
- Department of Psychology, Neuroscience, and Behaviour, McMaster University, McMaster University, Ontario, Canada
| | - Robert Gerlai
- Department of Cell & Systems Biology, University of Toronto, Ontario, Canada; Department of Psychology, University of Toronto Mississauga, Ontario, Canada.
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