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Iizumi M, Oota-Ishigaki A, Yamashita M, Hayashi T. Reduced Effect of Anticonvulsants on AMPA Receptor Palmitoylation-Deficient Mice. Front Pharmacol 2021; 12:711737. [PMID: 34483921 PMCID: PMC8416418 DOI: 10.3389/fphar.2021.711737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 08/05/2021] [Indexed: 12/29/2022] Open
Abstract
AMPA receptors are responsible for fast excitatory synaptic transmission in the mammalian brain. Post-translational protein S-palmitoylation of AMPA receptor subunits GluA1-4 reversibly regulates synaptic AMPA receptor expression, resulting in long-lasting changes in excitatory synaptic strengths. Our previous studies have shown that GluA1 C-terminal palmitoylation-deficient (GluA1C811S) mice exhibited hyperexcitability in the cerebrum and elevated seizure susceptibility without affecting brain structure or basal synaptic transmission. Moreover, some inhibitory GABAergic synapses-targeting anticonvulsants, such as valproic acid, phenobarbital, and diazepam, had less effect on these AMPA receptor palmitoylation-deficient mutant mice. This work explores pharmacological effect of voltage-gated ion channel-targeted anticonvulsants, phenytoin and trimethadione, on GluA1C811S mice. Similar to GABAergic synapses-targeting anticonvulsants, anticonvulsive effects were also reduced for both sodium channel- and calcium channel-blocking anticonvulsants, which suppress excess excitation. These data strongly suggest that the GluA1C811S mice generally underlie the excessive excitability in response to seizure-inducing stimulation. AMPA receptor palmitoylation site could be a novel target to develop unprecedented type of anticonvulsants and GluA1C811S mice are suitable as a model animal for broadly evaluating pharmacological effectiveness of antiepileptic drugs.
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Affiliation(s)
- Madoka Iizumi
- National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Kodaira, Japan
| | - Akiko Oota-Ishigaki
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Mariko Yamashita
- National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Kodaira, Japan
| | - Takashi Hayashi
- National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Kodaira, Japan.,Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
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Sabatier LL, Palestro PH, Enrique AV, Pastore V, Sbaraglini ML, Martín P, Gavernet L. Design, synthesis and biological evaluation of N-substituted α-hydroxyimides and 1,2,3-oxathiazolidine-4-one-2,2-dioxides with anticonvulsant activity. J Enzyme Inhib Med Chem 2019; 34:1465-1473. [PMID: 31411081 PMCID: PMC6713207 DOI: 10.1080/14756366.2019.1651722] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/23/2019] [Accepted: 07/25/2019] [Indexed: 12/19/2022] Open
Abstract
In this investigation, we studied a family of compounds with an oxathiazolidine-4-one-2,2-dioxide skeleton and their amide synthetic precursors as new anticonvulsant drugs. The cyclic structures were synthesized using a three-step protocol that include solvent-free reactions and microwave-assisted heating. The compounds were tested in vivo through maximal electroshock seizure test in mice. All the structures showed activity at the lower doses tested (30 mg/Kg) and no signs of neurotoxicity were detected. Compound encoded as 1g displayed strong anticonvulsant effects in comparison with known anticonvulsants (ED50 = 29 mg/Kg). First approximations about the mechanisms of action of the cyclic structures were proposed by docking simulations and in vitro assays against sodium channels (patch clamp methods).
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Affiliation(s)
- Laureano L. Sabatier
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata, La Plata, Argentina
| | - Pablo H. Palestro
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata, La Plata, Argentina
| | - Andrea V. Enrique
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), CONICET—Universidad Nacional de la Plata), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Valentina Pastore
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), CONICET—Universidad Nacional de la Plata), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - María L. Sbaraglini
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata, La Plata, Argentina
| | - Pedro Martín
- Instituto de Estudios Inmunológicos y Fisiopatológicos (IIFP), CONICET—Universidad Nacional de la Plata), Facultad de Ciencias Exactas, Universidad Nacional de La Plata, La Plata, Argentina
| | - Luciana Gavernet
- Medicinal Chemistry, Department of Biological Sciences, Faculty of Exact Sciences, National University of La Plata, La Plata, Argentina
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Jiang G, Pu T, Li Z, Zhang X, Zhou R, Cao X, Yu J, Wang X. Lithium affects rat hippocampal electrophysiology and epileptic seizures in a dose dependent manner. Epilepsy Res 2018; 146:112-120. [DOI: 10.1016/j.eplepsyres.2018.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 07/20/2018] [Accepted: 07/27/2018] [Indexed: 12/14/2022]
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Pastore V, Wasowski C, Martin P, Enrique A, Higgs J, Bruno-Blanch LE, Milesi V, Marder M. N-propyl-2,2-diphenyl-2-hydroxyacetamide, a novel α-hydroxyamide with anticonvulsant, anxiolytic and antidepressant-like effects that inhibits voltage-gated sodium channels. Eur J Pharmacol 2017; 819:270-280. [PMID: 29217174 DOI: 10.1016/j.ejphar.2017.11.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 11/14/2017] [Accepted: 11/30/2017] [Indexed: 01/08/2023]
Abstract
In patients with epilepsy, anxiety and depression are the most frequent psychiatric comorbidities but they often remain unrecognized and untreated. We report herein the antidepressant-like activity in two animal models, tail suspension and forced swimming tests, of six anticonvulsants α-hydroxyamides. From these, N-propyl-2,2-diphenyl-2-hydroxyacetamide (compound 5) emerged not only as the most active as anticonvulsant (ED50 = 2.5mg/kg, MES test), but it showed the most remarkable antidepressant-like effect in the tail suspension and forced swimming tests (0.3-30mg/kg, i.p.); and, also, anxiolytic-like action in the plus maze test (3-10mg/kg, i.p.) in mice. Studies of its mechanism of action, by means of its capacity to act via the GABAA receptor ([3H]-flunitrazepam binding assay); the 5-HT1A receptor ([3H]-8-OH-DPAT binding assay) and the voltage-gated sodium channels (either using the patch clamp technique in hNav 1.2 expressed in HEK293 cell line or using veratrine, in vivo) were attempted. The results demonstrated that its effects are not likely related to 5-HT1A or GABAAergic receptors and that its anticonvulsant and antidepressant-like effect could be due to its voltage-gated sodium channel blocking properties.
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Affiliation(s)
- Valentina Pastore
- Universidad de Buenos Aires, Consejo Nacional de lnvestigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Junín 956 (C1113AAD), Ciudad de Buenos Aires, Argentina.
| | - Cristina Wasowski
- Universidad de Buenos Aires, Consejo Nacional de lnvestigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Junín 956 (C1113AAD), Ciudad de Buenos Aires, Argentina.
| | - Pedro Martin
- Universidad Nacional de La Plata, Consejo Nacional de lnvestigaciones Científicas y Técnicas, Instituto de Estudios Inmunopatológicos y Fisiológicos, 47 street and 115 (B1900BJW), La Plata, Argentina.
| | - Andrea Enrique
- Química Medicinal, Departamento de Ciencias Biológicas, Universidad Nacional de La Plata, 47 street and 115 (B1900BJW), La Plata, Argentina.
| | - Josefina Higgs
- Universidad de Buenos Aires, Consejo Nacional de lnvestigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Junín 956 (C1113AAD), Ciudad de Buenos Aires, Argentina.
| | - Luis E Bruno-Blanch
- Química Medicinal, Departamento de Ciencias Biológicas, Universidad Nacional de La Plata, 47 street and 115 (B1900BJW), La Plata, Argentina.
| | - Veronica Milesi
- Universidad Nacional de La Plata, Consejo Nacional de lnvestigaciones Científicas y Técnicas, Instituto de Estudios Inmunopatológicos y Fisiológicos, 47 street and 115 (B1900BJW), La Plata, Argentina.
| | - Mariel Marder
- Universidad de Buenos Aires, Consejo Nacional de lnvestigaciones Científicas y Técnicas, Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Junín 956 (C1113AAD), Ciudad de Buenos Aires, Argentina.
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Kaur S, Kaur A, Singh G, Bhatti R. Mercurius solubilis attenuates scopolamine-induced memory deficits and enhances the motor coordination in mice. Int J Neurosci 2017; 128:219-230. [DOI: 10.1080/00207454.2017.1382494] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Simranjeet Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, India
| | - Anudeep Kaur
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, India
| | - Gurjit Singh
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, India
| | - Rajbir Bhatti
- Department of Pharmaceutical Sciences, Guru Nanak Dev University, Amritsar, India
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Synthesis and antidepressant activities of 4-(substituted-phenyl)tetrazolo[1,5-a]quinazolin-5(4H)-ones and their derivatives. Mol Divers 2015; 19:817-28. [PMID: 26251313 DOI: 10.1007/s11030-015-9623-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 07/19/2015] [Indexed: 10/23/2022]
Abstract
A series of novel 4-(substituted-phenyl) tetrazolo[1,5-a]quinazolin-5(4H)-ones (6a-x) and their derivatives with tetrazole and other heterocyclic substituents (7-14) were designed, synthesized, and evaluated for antidepressant activities in mice. Pharmacological tests showed that three compounds (6l, 6u, and 6v) at a dose of 50 mg/kg significantly reduced the immobility time in the forced swimming test. The most active compound was 4-(p-tolyl)tetrazolo[1,5-a]quinazolin-5(4H)-one (6v), which decreased the immobility time by 82.69 % at 50 mg/kg. Moreover, 6v did not affect spontaneous activity in the open-field test, and this effect was comparable to the antidepressant effect of fluoxetine. Noradrenaline (NE) and 5-hydroxytryptamine (5-HT) levels in the brains of mice in the test sample groups significantly increased at a dose of 50 mg/kg compared with that in the control group. The monoamine oxidase (MAO) level of all test groups was reduced, but this result was not significantly different between the groups. Therefore, we can infer that their underlying mechanisms may involve the regulation of brain monoamine neurotransmitter homeostasis, based on the detected content of NE, 5-HT, and MAO in mouse brain tissue.
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