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Liu Z, Luo X, Yan-Do R, Wang Y, Xie X, Li Z, Cheng SH, Shi P. Vertebrates on a Chip: Noninvasive Electrical and Optical Mapping of Whole Brain Activity Associated with Pharmacological Treatments. ACS Chem Neurosci 2024; 15:2121-2131. [PMID: 38775291 DOI: 10.1021/acschemneuro.4c00158] [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] [Indexed: 06/06/2024] Open
Abstract
Mapping brain activities is necessary for understanding brain physiology and discovering new treatments for neurological disorders. Such efforts have greatly benefited from the advancement in technologies for analyzing neural activity with improving temporal or spatial resolution. Here, we constructed a multielectrode array based brain activity mapping (BAM) system capable of stabilizing and orienting zebrafish larvae for recording electroencephalogram (EEG) like local field potential (LFP) signals and brain-wide calcium dynamics in awake zebrafish. Particularly, we designed a zebrafish trap chip that integrates with an eight-by-eight surface electrode array, so that brain electrophysiology can be noninvasively recorded in an agarose-free and anesthetic-free format with a high temporal resolution of 40 μs, matching the capability typically achieved by invasive LFP recording. Benefiting from the specially designed hybrid system, we can also conduct calcium imaging directly on immobilized awake larval zebrafish, which further supplies us with high spatial resolution brain-wide activity data. All of these innovations reconcile the limitations of sole LFP recording or calcium imaging, emphasizing a synergy of combining electrical and optical modalities within one unified device for activity mapping across a whole vertebrate brain with both improved spatial and temporal resolutions. The compatibility with in vivo drug treatment further makes it suitable for pharmacology studies based on multimodal measurement of brain-wide physiology.
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Affiliation(s)
- Zhen Liu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Xuan Luo
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Richard Yan-Do
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
- Hong Kong Centre for Cerebro-Cardiovascular Health Engineering Hong Kong Science Park, Hong Kong SAR
| | - Yuan Wang
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Xi Xie
- State Key Laboratory of Optoelectronic Materials and Technologies, Guangdong Province Key Laboratory of Display Material and Technology School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
| | - Zhongping Li
- Institute of Environmental Science, Shanxi University, Taiyuan 030006, China
| | - Shuk Han Cheng
- Department of Biomedical Science, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
| | - Peng Shi
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR 999077, China
- Hong Kong Centre for Cerebro-Cardiovascular Health Engineering Hong Kong Science Park, Hong Kong SAR
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong Kowloon, Hong Kong SAR
- Shenzhen Research Institute, City University of Hong Kong Shenzhen, Guangdong 518057, China
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Jaiswal S, Ayyannan SR. Lead optimization study on indoline-2,3-dione derivatives as potential fatty acid amide hydrolase inhibitors. J Biomol Struct Dyn 2023; 41:9632-9650. [PMID: 36379672 DOI: 10.1080/07391102.2022.2145372] [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: 05/23/2022] [Accepted: 11/02/2022] [Indexed: 11/17/2022]
Abstract
Based on the known isatin-based fatty acid amide hydrolase (FAAH) inhibitor BSS-7, we designed and synthesized two small sets (6-13 and 17-20) of N-1 and C-3 substituted isatin derivatives and evaluated them for their in vitro FAAH inhibition properties. The lead simplification by modification of bulky aryl moiety at N-1 with a flexible allyl group produced a nanomolar (IC50 = 6.7 nM, Ki = 5 nM) inhibitor 11 (Z)-3-((1H-benzo[d]imidazol-2-yl)imino)-1-allylindolin-2-one which exhibited a reversible and competitive FAAH inhibition with 1500 times more potency to BSS-7 (1.49 ± 0.03 µM). The lead compound 11 also showed a high blood-brain permeability and a significant antioxidant profile with no neurotoxicity. Docking results suggested that the inhibitor molecules occupied the active site of FAAH and offered optimal binding interactions. A molecular dynamics simulation study ascertained the stability of the lead inhibitor 11-FAAH complex. In silico ADMET profiling studies unveiled that compound 11 possesses good drug-like properties and merits further evaluation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shivani Jaiswal
- Pharmaceutical Chemistry Research Laboratory II, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
| | - Senthil Raja Ayyannan
- Pharmaceutical Chemistry Research Laboratory II, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi, Uttar Pradesh, India
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3
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Hope OA, Harris KM. Management of epilepsy during pregnancy and lactation. BMJ 2023; 382:e074630. [PMID: 37684052 DOI: 10.1136/bmj-2022-074630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/10/2023]
Abstract
Epilepsy is a group of neurological diseases characterized by susceptibility to recurrent seizures. Antiseizure medications (ASMs) are the mainstay of treatment, but many antiseizure medications with variable safety profiles have been approved for use. For women with epilepsy in their childbearing years, the safety profile is important for them and their unborn children, because treatment is often required to protect them from seizures during pregnancy and lactation. Since no large randomized controlled trials have investigated safety in this subgroup of people with epilepsy, pregnancy registries, cohort and case-control studies from population registries, and a few large prospective cohort studies have played an important role. Valproate, in monotherapy and polytherapy, has been associated with elevated risk of major congenital malformations and neurodevelopmental disorders in children born to mothers who took it. Topiramate and phenobarbital are also associated with elevated risks of congenital malformations and neurodevelopmental disorders, though the risks are lower than those of valproate. Lamotrigine and levetiracetam are relatively safe. Insufficient data exist to reach strong conclusions about the newest antiseizure medications such as eslicarbazepine, perampanel, brivaracetam, cannabidiol, and cenobamate. Besides antiseizure medications, other treatments such as vagal nerve stimulation, responsive neurostimulation, and deep brain stimulation are likely safe. In general, breastfeeding does not appear to add any additional long term risks to the child. Creative ways of optimizing registry enrollment and data collection are needed to enhance patient safety.
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Affiliation(s)
- Omotola A Hope
- Houston Methodist Sugarland Neurology Associates, Houston, TX, USA
| | - Katherine Mj Harris
- Department of Neurology, McGovern Medical School at UTHealth, Houston, TX, USA
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Wahab A, Iqbal A. Black-Box Warnings of Antiseizure Medications: What is Inside the Box? Pharmaceut Med 2023; 37:233-250. [PMID: 37119452 DOI: 10.1007/s40290-023-00475-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2023] [Indexed: 05/01/2023]
Abstract
Antiseizure medications can cause serious adverse reactions and have deleterious drug interactions that often complicate the clinical management of patients. When the US Food and Drug Administration (FDA) wants to alert healthcare providers and patients about the risk of potentially serious or fatal drug reactions, the FDA requires the manufacturers of these medications to format these warnings within a "black-box" border, and prominently display this box on the first section of the package insert; such warnings are called "black-box warnings (BBWs)". The BBW is a way for the FDA to urge physicians to evaluate patients more rigorously and carefully weigh the risks and benefits, before prescribing medication that has the potential to cause serious adverse reactions, and to formulate a plan for close monitoring during therapy. The FDA BBW provides the extra layer of safety but many healthcare providers fail to comply with these warnings. Currently, there are 26 FDA-approved antiseizure medications in the US market, 38% of which have received BBWs, and most of the antiseizure medications with BBWs are older-generation drugs. Some antiseizure medications have multiple BBWs; for example, valproic acid has three BBWs including hepatotoxicity, fetal risk, and pancreatitis, carbamazepine has BBWs of serious skin and hematological reactions, and felbamate also has two BBWs including hepatic failure and aplastic anemia. The purpose of this review is to provide insight into each BBW received by antiseizure medications and discuss the FDA recommendations for evaluating the drug benefit/risk, and for monitoring parameters before the initiation of and during treatment.
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Affiliation(s)
- Abdul Wahab
- Department of Pharmacy, Emory Healthcare, Emory Decatur Hospital, Decatur, GA, 30033, USA.
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Hamada Abd-Allah W, Abd El-Mohsen Anwar M, Mohammed ER, Elbaset MA, El Moghazy SM. Exploring new cyclohexane carboxamides based GABA agonist: Design, synthesis, biological evaluation, in silico ADME and docking studies. Bioorg Chem 2023; 136:106561. [PMID: 37119786 DOI: 10.1016/j.bioorg.2023.106561] [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: 03/29/2023] [Revised: 04/16/2023] [Accepted: 04/19/2023] [Indexed: 05/01/2023]
Abstract
The new series of 5a-e, 6a-e and 7a-e derivatives were designed, synthesized and tested for their anticonvulsant activity using "gold standard methods" ScPTZ and MES model, neurotoxicity, liver enzymes and neurochemical assay. Screening of the synthesized analogues exhibited variable anticonvulsant potential especially in chemically induced seizures. Quantification study showed that compounds 6d and 6e were the most potent analogues with ED50 44.77 and 11.31 mg/kg, respectively in ScPTZ test. Compound 6e (0.031 mmol/kg) was about 2 fold more potent than phenobarbital (0.056 mmol/kg) and was 30 folds more potent than Ethosuximide (0.92 mmol/kg) as reference standard drug. Moreover, all the synthesized compounds were screened for acute neurotoxicity using the rotarod method to recognize motor impairment, whereas all compounds devoid from neurotoxicity except compound 5a, 5b, 7a and 7e. The most active compounds were examined for acute toxicity and the estimates for LD50 were stated. Further neurochemical study was performed to investigate the effect of the most active compounds in ScPTZ test on GABA level in brain of the mice; a significant elevation in GABA level was obvious for compound 6d compared to control group confirming GABAergic modulating activity. Docking study was accomplished to examine the binding interaction of the newly synthesized analogues with GABA-AT enzyme. Additionally, physicochemical and pharmacokinetic parameters were predicted. The attained results indicate that the newly target compounds are considered a promising scaffolds for further development of newly anticonvulsants.
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Affiliation(s)
- Walaa Hamada Abd-Allah
- Pharmaceutical Chemistry Department, Collage of Pharmaceutical Science and Drug Manufacturing, Misr University for Science and Technology, P.O. 77, 6th of October City, Giza, Egypt.
| | - Mostafa Abd El-Mohsen Anwar
- Pharmaceutical Chemistry Department, Collage of Pharmaceutical Science and Drug Manufacturing, Misr University for Science and Technology, P.O. 77, 6th of October City, Giza, Egypt
| | - Eman R Mohammed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
| | - Marawan A Elbaset
- Department of Pharmacology, Medical Research and Clinical Studies Institute, National Research Centre, Giza, Egypt
| | - Samir M El Moghazy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
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Sun S, Wang H. Clocking Epilepsies: A Chronomodulated Strategy-Based Therapy for Rhythmic Seizures. Int J Mol Sci 2023; 24:ijms24044223. [PMID: 36835631 PMCID: PMC9962262 DOI: 10.3390/ijms24044223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/08/2023] [Accepted: 02/14/2023] [Indexed: 02/22/2023] Open
Abstract
Epilepsy is a neurological disorder characterized by hypersynchronous recurrent neuronal activities and seizures, as well as loss of muscular control and sometimes awareness. Clinically, seizures have been reported to display daily variations. Conversely, circadian misalignment and circadian clock gene variants contribute to epileptic pathogenesis. Elucidation of the genetic bases of epilepsy is of great importance because the genetic variability of the patients affects the efficacies of antiepileptic drugs (AEDs). For this narrative review, we compiled 661 epilepsy-related genes from the PHGKB and OMIM databases and classified them into 3 groups: driver genes, passenger genes, and undetermined genes. We discuss the potential roles of some epilepsy driver genes based on GO and KEGG analyses, the circadian rhythmicity of human and animal epilepsies, and the mutual effects between epilepsy and sleep. We review the advantages and challenges of rodents and zebrafish as animal models for epileptic studies. Finally, we posit chronomodulated strategy-based chronotherapy for rhythmic epilepsies, integrating several lines of investigation for unraveling circadian mechanisms underpinning epileptogenesis, chronopharmacokinetic and chronopharmacodynamic examinations of AEDs, as well as mathematical/computational modeling to help develop time-of-day-specific AED dosing schedules for rhythmic epilepsy patients.
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Affiliation(s)
- Sha Sun
- Center for Circadian Clocks, Soochow University, Suzhou 215123, China
- School of Biology and Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215123, China
| | - Han Wang
- Center for Circadian Clocks, Soochow University, Suzhou 215123, China
- School of Biology and Basic Medical Sciences, Suzhou Medical College, Soochow University, Suzhou 215123, China
- Correspondence: or ; Tel.: +86-186-0512-8971
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Ajibade MA, Akhigbemen AM, Okolie NP, Ozolua RI. Methanol leaf extract of Paullinia pinnata exerts sleep-enhancing and anticonvulsant effects via a mechanism involving the GABAergic pathway. Epilepsy Res 2022; 183:106943. [DOI: 10.1016/j.eplepsyres.2022.106943] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/11/2022] [Accepted: 05/12/2022] [Indexed: 12/15/2022]
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8
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Jaiswal S, Akhilesh, Uniyal A, Tiwari V, Raja Ayyannan S. Synthesis and evaluation of dual fatty acid amide hydrolase-monoacylglycerol lipase inhibition and antinociceptive activities of 4-methylsulfonylaniline-derived semicarbazones. Bioorg Med Chem 2022; 60:116698. [PMID: 35296453 DOI: 10.1016/j.bmc.2022.116698] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/10/2022] [Accepted: 03/02/2022] [Indexed: 12/31/2022]
Abstract
Fatty acid amide hydrolase (FAAH) and monoacylglycerol lipase (MAGL) are promising targets for neuropathic pain and other CNS disorders. Based on our previous lead compound SIH 3, we designed and synthesized a series of 4-methylsulfonylphenyl semicarbazones and evaluated for FAAH and MAGL inhibition properties. Most of the compounds showed potency towards both enzymes with leading FAAH selectivity. Compound (Z)-2-(2,6-dichlorobenzylidene)-N-(4-(methylsulfonyl)phenyl)hydrazine-1-carboxamide emerged as the lead inhibitor against both FAAH (IC50 = 11 nM) and MAGL (IC50 = 36 nM). The lead inhibitor inhibited FAAH by non-competitive mode, but showed a mixed-type inhibition against MAGL. Molecular docking study unveiled that the docked ligands bind favorably to the active sites of FAAH and MAGL. The lead inhibitor interacted with FAAH and MAGL via π-π stacking via phenyl ring and hydrogen bonding through sulfonyl oxygen atoms or amide NH. Moreover, the stability of docked complexes was rationalized by molecular simulation studies. PAMPA assay revealed that the lead compound is suitable for blood-brain penetration. The lead compound showed better cell viability in lipopolysaccharide-induced neurotoxicity assay in SH-SY5Y cell lines. Further, in-vivo experiments unveiled that dual inhibitor was safe up to 2000 mg/kg with no hepatotoxicity. The dual FAAH-MAGL inhibitor produced significant anti-nociceptive effect in the CCI model of neuropathic pain without altering locomotion activity. Lastly, the lead compound exhibited promising ex-vivo FAAH/MAGL inhibition activity at the dose of 10 mg/kg and 20 mg/kg. Thus, these findings suggest that the semicarbazone-based lead compound can be a potential template for the development of agents for neuropathic pain.
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Affiliation(s)
- Shivani Jaiswal
- Pharmaceutical Chemistry Research Laboratory II, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, Uttar Pradesh, India
| | - Akhilesh
- Neuroscience and Pain Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Ankit Uniyal
- Neuroscience and Pain Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Vinod Tiwari
- Neuroscience and Pain Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (BHU), Varanasi 221005, Uttar Pradesh, India
| | - Senthil Raja Ayyannan
- Pharmaceutical Chemistry Research Laboratory II, Department of Pharmaceutical Engineering and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, Uttar Pradesh, India.
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Huang X, Dong S, Liu H, Wan P, Wang T, Quan H, Wang Z, Wang Z. Design, Synthesis, and Evaluation of Novel Benzo[ d]isoxazole Derivatives as Anticonvulsants by Selectively Blocking the Voltage-Gated Sodium Channel Na V1.1. ACS Chem Neurosci 2022; 13:834-845. [PMID: 35212221 DOI: 10.1021/acschemneuro.1c00846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Sodium channel blockers are important antiseizure drugs. Since the launch of phenobarbital in 1912, it has a development history of nearly 100 years. However, because of the confounding symptoms, complications, and complex intrinsic pathogenesis of epilepsy, the design and development of blockers specifically targeting sodium channels as antiseizure drugs are difficult and rarely reported. In this study, we designed and synthesized a series of novel benzo[d]isoxazole derivatives as anticonvulsants. Among them, the most potent Z-6b displayed high protection against the MES-induced seizures with an ED50 value of 20.5 mg/kg and a high protective index (TD50/ED50) of 10.3. In addition, Z-6b significantly inhibited NaV1.1 channels in patch-clamp experiments but almost did not inhibit NaV1.2, NaV1.3, and NaV1.6 channels. These findings strongly support the hypothesis that new benzo[d]isoxazole derivatives display anticonvulsant activity by selectively blocking voltage-gated sodium channel NaV1.1, which provides good alternatives for developing selective NaV1.1 channel blockers as antiseizure drugs in the future.
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Affiliation(s)
- Xiang Huang
- College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Shiyang Dong
- College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Hua Liu
- College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Pingnan Wan
- College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Tiantian Wang
- National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Jiangxi University of Chinese Medicine, Nanchang 330006, China
| | - Hexiu Quan
- School of Chinese Medicine, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Zengcai Wang
- School of Information and Control, Shenyang Institute of Technology, Shenyang 113122, China
| | - Zengtao Wang
- College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, China
- Nanchang Yichou Technology Co., Ltd, Nanchang 330036, China
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Synthesis, molecular docking, antimicrobial, antioxidant and anticonvulsant assessment of novel S and C-linker thiazole derivatives. Chem Phys Lett 2022. [DOI: 10.1016/j.cplett.2022.139408] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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11
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Wu J, Hou Z, Wang Y, Chen L, Lian C, Meng Q, Zhang C, Li X, Huang L, Yu H. Discovery of 7-alkyloxy- [1,2,4] triazolo[1,5-a] pyrimidine derivatives as selective positive modulators of GABA A1 and GABA A4 receptors with potent antiepileptic activity. Bioorg Chem 2021; 119:105565. [PMID: 34929519 DOI: 10.1016/j.bioorg.2021.105565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 12/09/2021] [Accepted: 12/13/2021] [Indexed: 12/28/2022]
Abstract
A series of 7-alkoxy - [1,2,4] triazolo [1, 5-a] pyrimidine derivatives were designed and synthesized. Maximal electroshock (MES) and pentylenetetrazole (PTZ) tests were utilized to access their anticonvulsant activity. Most of the series of compounds exhibited significant anti-seizure effects. Further studies demonstrated that the anticonvulsant activity of these compounds mainly depended on their allosteric potentiation of GABAA receptors. Among them, compound 10c was picked for the mechanism study due to its potent activity. The compound is more sensitive to subunit configurations of synaptic α1β2γ2 and extrasynaptic α4β3δ GABAA receptors, but there were no effects on NMDA receptors and Nav1.2 sodium channels. Meanwhile, 10c acted on the sites of GABAA receptors distinct from commonly used anticonvulsants benzodiazepines and barbiturates. Furthermore, studies from native neurons demonstrated that compound 10c also potentiated the activity of native GABAA receptors and reduced action potential firings in cultured cortical neurons. Such structural compounds may lay a foundation for further designing novel antiepileptic molecules.
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Affiliation(s)
- Jun Wu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xiannongtan Street, Xicheng district, Beijing 100050, China
| | - Zhipeng Hou
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China
| | - Yan Wang
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China
| | - Liping Chen
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China
| | - Chengxi Lian
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China
| | - Qingfei Meng
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China
| | - Chaoying Zhang
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China
| | - Xiufen Li
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China
| | - Longjiang Huang
- College of Chemical Engineering, Qingdao University of Science and Technology, 53 Zhengzhou Road, Qingdao 266042, China; State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xiannongtan Street, Xicheng district, Beijing 100050, China.
| | - Haibo Yu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xiannongtan Street, Xicheng district, Beijing 100050, China.
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12
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Vasconcelos-Ferreira A, Carmo-Silva S, Codêsso JM, Silva P, Martinez ARM, França MC, Nóbrega C, Pereira de Almeida L. The autophagy-enhancing drug carbamazepine improves neuropathology and motor impairment in mouse models of Machado-Joseph disease. Neuropathol Appl Neurobiol 2021; 48:e12763. [PMID: 34432315 DOI: 10.1111/nan.12763] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2021] [Accepted: 08/04/2021] [Indexed: 11/28/2022]
Abstract
AIMS Machado-Joseph disease (MJD), or spinocerebellar ataxia type 3 (SCA3), is the most common autosomal dominantly-inherited ataxia worldwide and is characterised by the accumulation of mutant ataxin-3 (mutATXN3) in different brain regions, leading to neurodegeneration. Currently, there are no available treatments able to block disease progression. In this study, we investigated whether carbamazepine (CBZ) would activate autophagy and mitigate MJD pathology. METHODS The autophagy-enhancing activity of CBZ and its effects on clearance of mutATXN3 were evaluated using in vitro and in vivo models of MJD. To investigate the optimal treatment regimen, a daily or intermittent CBZ administration was applied to MJD transgenic mice expressing a truncated human ATXN3 with 69 glutamine repeats. Motor behaviour tests and immunohistology was performed to access the alleviation of MJD-associated motor deficits and neuropathology. A retrospective study was conducted to evaluate the CBZ effect in MJD patients. RESULTS We found that CBZ promoted the activation of autophagy and the degradation of mutATXN3 in MJD models upon short or intermittent, but not daily prolonged, treatment regimens. CBZ up-regulated autophagy through activation of AMPK, which was dependent on the myo-inositol levels. In addition, intermittent CBZ treatment improved motor performance, as well as prevented neuropathology in MJD transgenic mice. However, in patients, no evident differences in SARA scale were found, which was not unexpected given the small number of patients included in the study. CONCLUSIONS Our data support the autophagy-enhancing activity of CBZ in the brain and suggest this pharmacological approach as a promising therapy for MJD and other polyglutamine disorders.
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Affiliation(s)
- Ana Vasconcelos-Ferreira
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | - Sara Carmo-Silva
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - José Miguel Codêsso
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Patrick Silva
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
| | | | | | - Clévio Nóbrega
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal
| | - Luís Pereira de Almeida
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,CIBB-Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,Faculty of Pharmacy, University of Coimbra, Coimbra, Portugal
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13
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Schiff Bases of Isatin and Adamantane-1-Carbohydrazide: Synthesis, Characterization and Anticonvulsant Activity. J CHEM-NY 2021. [DOI: 10.1155/2021/6659156] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Epilepsy is the most common neurological condition and cause of substantial morbidity and mortality. In the present study, the molecular hybridization tool was adopted to obtain six Schiff bases of isatin and adamantane-1-carbohydrazide (18–23). Then, their anticonvulsant activity was evaluated using pentylenetetrazole- (PTZ-) induced seizure model using phenobarbitone as a positive control. Our findings showed that compounds 18–23 provided significant protection against PTZ-induced seizure, and maximum activities were associated with compound 23. Moreover, all investigated compounds increased the latency of induced convulsion and reduced the duration of epilepsy with compound 23 being the best. Interestingly, most of the synthesized molecules showed reduction in neurological symptoms and severity of the seizure. Molecular docking studies suggest GABA-A receptor as a potential target, and in silico ADME screening revealed that the pharmaceutical properties of compound 23 are within the specified limit. Thus, compound 23 was identified as a promising candidate that warrants further drug discovery processes.
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Wang S, Liu H, Lei K, Li G, Li J, Wei Y, Wang X, Liu R. Synthesis of 3,4-dihydroquinolin-2(1H)-one derivatives with anticonvulsant activity and their binding to the GABA A receptor. Bioorg Chem 2020; 103:104182. [PMID: 32890992 DOI: 10.1016/j.bioorg.2020.104182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 07/21/2020] [Accepted: 08/03/2020] [Indexed: 11/29/2022]
Abstract
In this study, a series of 3,4-dihydroquinolin-2(1H)-one derivatives were designed and synthesized using two experimental models, namely maximal electroshock (MES) and subcutaneous pentylenetetrazole (scPTZ), to test the anticonvulsant activity of the target compound in vivo (i.p. in Kunming mice). The neurotoxicity (NT) of the target compound was measured by the rotating rod method (i.p. in Kunming mice). Six compounds with potential activity were selected from the two experimental models to test the 50% effective dose (ED50). In vitro binding experiments with the GABAA receptor were also performed. The results of the pharmacological experiments showed that compound 7-((5-(pentylthio)-1,3,4-oxadiazol-2-yl)methoxy)-3,4-dihydroquinolin-2(1H)-one (5b) showed the best anticonvulsant activity (MES, ED50 = 10.1 mg/kg; scPTZ, ED50 = 9.3 mg/kg), which was superior to activities shown by carbamazepine and ethosuximide, and it also exhibited the most potent binding affinity to GABAA receptors (IC50 = 0.12 μM). The GABA content in Wistar rat brains (i.p.) was also investigated, and the results showed that compound 5b may have a certain effect on the GABA system, as it increased the GABA concentration in the brain of rats. Molecular docking was used to study the binding mode of compound 5b and the GABAA receptor. Compound 5b showed significant interactions with residues at the benzodiazepines binding site on the GABAA receptor. The physicochemical and pharmacokinetic properties of the target compounds were predicted using Discovery Studio 2019 and ChemBioDraw Ultra 14.0.
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Affiliation(s)
- Shiben Wang
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China.
| | - Hui Liu
- College of Life Sciences, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Kang Lei
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Guangyong Li
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Jun Li
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Yuyu Wei
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Xuekun Wang
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
| | - Renmin Liu
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong 252059, China
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15
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Wang S, Liu H, Wang X, Lei K, Li G, Li J, Liu R, Quan Z. Synthesis of 1,3,4-oxadiazole derivatives with anticonvulsant activity and their binding to the GABA A receptor. Eur J Med Chem 2020; 206:112672. [PMID: 32798790 DOI: 10.1016/j.ejmech.2020.112672] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/16/2020] [Accepted: 07/16/2020] [Indexed: 02/03/2023]
Abstract
In this study, a series of 1,3,4-oxadiazole derivatives (5a-s, 10a-s, and 16a-d) were designed and synthesized using maximal electroshock (MES) and subcutaneous pentylenetetrazole (scPTZ) models, to test the anticonvulsant activity of the target compounds in vivo. The neurotoxicity (NT) of the target compounds was measured using the rotating rod (ROT) method. Seven compounds with potential activity were selected to test the 50% effective dose (ED50) and 50% toxic dose (TD50). Pharmacological experiments revealed that 6-((5-(pentylthio)-1,3,4-oxadiazol-2-yl)methoxy)-3,4-dihydroquinolin-2(1H)-one (5b) showed the best anticonvulsant activity (MES, ED50 = 8.9 mg/kg; scPTZ, ED50 = 10.2 mg/kg), which was greater than the activities of carbamazepine and ethosuximide. Compound 5b exhibited the most potent binding affinity toward the GABAA receptor (IC50 = 0.11 μM) in the in vitro binding experiments. Compound 5b displayed significant anxiolytic activity at a low dose (1 mg/kg) in the elevated plus maze (EPM) test. The GABA content in rat brains was also investigated, and the results showed that compound 5b might have affected the GABA system. In our molecular docking experiment, compound 5b showed significant interactions with residues present at the benzodiazepine binding site on the GABAA receptor. The structure and physicochemical and pharmacokinetic properties of the target compound were predicted using Discovery Studio 2019 and ChemBioDraw Ultra 14.0. Finally we demonstrated that compound 5b mainly acted on GABAA receptor. Thus the present study has provided potential candidates for further investigation in epilepsy.
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Affiliation(s)
- Shiben Wang
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong, 252059, China.
| | - Hui Liu
- College of Life Sciences, Liaocheng University, Liaocheng, Shandong, 252059, China
| | - Xuekun Wang
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong, 252059, China
| | - Kang Lei
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong, 252059, China
| | - Guangyong Li
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong, 252059, China
| | - Jun Li
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong, 252059, China
| | - Renmin Liu
- College of Pharmacy, Liaocheng University, Liaocheng, Shandong, 252059, China
| | - Zheshan Quan
- College of Pharmacy, Yanbian University, Yanji, Jilin, 133002, China
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Bai Y, Li B, Xie J, Chen X, Cheng S, Bai Y, Sun Y, Qin F, Liang J, Ding Y, Zheng X. Synthesis and Evaluation of α-Asaronol Esters with LDH and GABAA Receptor Modulation as Anticonvulsant Agents. LETT DRUG DES DISCOV 2020. [DOI: 10.2174/1570180816666191204104127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background:
Our previous studies showed that α-asaronol was a potential antiepileptic
candidate. Here, twelve O-terminus modified ester derivatives of α-asaronol were designed, synthesized
and evaluated their anticonvulsant activity.
Methods:
All synthetic compounds were subjected to three animal models of seizure (MES, scPTZ
and sc3-MP models) combined with neurotoxicity test, as well as the LDH inhibitory test. Furthermore,
GABAA Receptor modulation and pharmacokinetic evaluation of compound 4k were also
performed.
Results:
Five compounds (4a, 4b, 4d, 4e and 4k) showed significant anticonvulsant properties at the
dose of 30-300 mg/kg in MES and scPTZ test, but weak activity in sc3-MP model. Meanwhile, 4a,
4b, 4d and 4k showed good LDH inhibitory activity in vitro. Specifically, 4k was the best compound
in above evaluation, and better than that of α-asaronol and reference compound (stiripentol).
In addition, 4k could increase chloride ion influx by modulating GABAA receptor α1β2γ2 subtype
with EC50 of 48.65 ± 10.31 μM and showed good PK profiles in rats with moderate oral bioavailability
(51.5%).
Conclusion:
These results suggested 4k possesses potential effectiveness in treatment of therapyresistant
seizures and is expected to be developed as a novel molecule for safer and efficient anticonvulsants
having neuroprotective effects as well as low toxicity.
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Affiliation(s)
- Yajun Bai
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, China
| | - Bin Li
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Jing Xie
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Xufei Chen
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Shu Cheng
- School of Science, Jiangnan University, Wuxi 214122, China
| | - Yujun Bai
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Ying Sun
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Fanggang Qin
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi’an 710069, China
| | - Jing Liang
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi’an, 710127, China
| | - Yanrui Ding
- School of Science, Jiangnan University, Wuxi 214122, China
| | - Xiaohui Zheng
- Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, The College of Life Sciences, Northwest University, Xi’an 710069, China
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Cetin A, Kurt H. Synthesis, Antibacterial Activity and Molecular Docking Studies of New Pyrazole Derivatives. LETT DRUG DES DISCOV 2020. [DOI: 10.2174/1570180816666190905155510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The pyrazole structure is an important heterocyclic structure and plays critical
roles in agriculture, industrial and medicine. Furthermore, compounds containing pyrazole are
known to exhibit various biological properties such as antibacterial, antifungal, anticancer, antiinflammatory,
antidepressant, antipyretic, antiviral, anti-tubercular and anti-HIV activities. Because
of these properties, pyrazole molecules have become a very popular topic for organic chemists.
Methods:
A series newly substituted pyrazole molecules were synthesized and characterized. Their
antimicrobial activities were investigated by disk diffusion method against some gram positive bacteria
and gram negative bacteria.
Results:
The present results indicated that the some test compounds were active in a broad spectrum
against important human pathogenic microorganisms. The substituted pyrazoles including carbazone
(7a, b) and thiazolidine (8a, b) showed a wide variety of biological activities. The results showed
that synthesized pyrazole, compounds 7b and 8b are highly active and more potent in both biological
and molecular docking simulation studies.
Conclusion:
The synthesized pyrazole molecules showed moderate antibacterial activities against
the tested microorganism compared to antibiotic drug. Some test compounds (7b and 8b) might be
used as new antibacterial agents.
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Affiliation(s)
- Adnan Cetin
- Department of Science, Faculty of Education, Mus Alparslan University, Mus, Turkey
| | - Havva Kurt
- Department of Molecular Biology, Faculty of Science and Art, Mus Alparslan University, Mus, Turkey
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18
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Tripathi RKP, Ayyannan SR. Exploration of dual fatty acid amide hydrolase and cholinesterase inhibitory potential of some 3‐hydroxy‐3‐phenacyloxindole analogs. Arch Pharm (Weinheim) 2020; 353:e2000036. [DOI: 10.1002/ardp.202000036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 01/15/2023]
Affiliation(s)
- Rati K. P. Tripathi
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of TechnologyBanaras Hindu University Varanasi Uttar Pradesh India
- Department of Pharmaceutical Science, Sushruta School of Medical and Paramedical SciencesAssam University (A Central University) Silchar Assam India
| | - Senthil R. Ayyannan
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering and Technology, Indian Institute of TechnologyBanaras Hindu University Varanasi Uttar Pradesh India
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19
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Marzouk AA, Bass AKA, Ahmed MS, Abdelhamid AA, Elshaier YAMM, Salman AMM, Aly OM. Design, synthesis and anticonvulsant activity of new imidazolidindione and imidazole derivatives. Bioorg Chem 2020; 101:104020. [PMID: 32599366 DOI: 10.1016/j.bioorg.2020.104020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 06/06/2020] [Accepted: 06/12/2020] [Indexed: 01/05/2023]
Abstract
New imidazolidindiones and tetra-substituted imidazole derivatives were designed, synthesized, and evaluated for the anticonvulsant activity through pentylenetetrazole (PTZ)-induced seizures and maximal electroshock (MES) tests using valproate sodium and phenytoin sodium as reference drugs, respectively. Most of the target compounds showed excellent activity against pentylenetetrazole (PTZ)-induced seizures with fair to no-activity against MES. Compounds 3d, 4e, 11b, and 11e showed higher activity (120%) than that of valproate sodium in PTZ model. Almost all compounds showed no neurotoxicity, as indicated by the rotarod test. Estimation of physicochemical properties and pharmacokinetic profiles of the target compounds were studied. The chemical structures of the target compounds were characterized by different spectrometric methods and elemental analysis.
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Affiliation(s)
- Adel A Marzouk
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Egypt.
| | - Amr K A Bass
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Menoufia University, Egypt
| | - Montaser Sh Ahmed
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Egypt
| | - Antar A Abdelhamid
- Department of Chemistry, Faculty of Science, Sohag University, Egypt; Chemistry Department, Faculty of Science, Albaha University, P.O. Box 1988, Albaha, Saudi Arabia
| | - Yaseen A M M Elshaier
- Department of Organic and Medicinal Chemistry, Faculty of Pharmacy, University of Sadat City, Sadat City, Menoufia, Egypt
| | - Asmaa M M Salman
- Medicinal and Pharmaceutical Chemistry Department, National Research Centre, Dokki, Cairo, Egypt
| | - Omar M Aly
- Department of Medicinal Chemistry, Faculty of Pharmacy, Minia University, Egypt
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20
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Gawel K, Langlois M, Martins T, van der Ent W, Tiraboschi E, Jacmin M, Crawford AD, Esguerra CV. Seizing the moment: Zebrafish epilepsy models. Neurosci Biobehav Rev 2020; 116:1-20. [PMID: 32544542 DOI: 10.1016/j.neubiorev.2020.06.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 04/20/2020] [Accepted: 06/05/2020] [Indexed: 12/14/2022]
Abstract
Zebrafish are now widely accepted as a valuable animal model for a number of different central nervous system (CNS) diseases. They are suitable both for elucidating the origin of these disorders and the sequence of events culminating in their onset, and for use as a high-throughput in vivo drug screening platform. The availability of powerful and effective techniques for genome manipulation allows the rapid modelling of different genetic epilepsies and of conditions with seizures as a core symptom. With this review, we seek to summarize the current knowledge about existing epilepsy/seizures models in zebrafish (both pharmacological and genetic) and compare them with equivalent rodent and human studies. New findings obtained from the zebrafish models are highlighted. We believe that this comprehensive review will highlight the value of zebrafish as a model for investigating different aspects of epilepsy and will help researchers to use these models to their full extent.
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Affiliation(s)
- Kinga Gawel
- Chemical Neuroscience Group, Centre for Molecular Medicine Norway (NCMM), University of Oslo, Gaustadalléen 21, Forskningsparken, 0349, Oslo, Norway; Department of Experimental and Clinical Pharmacology, Medical University of Lublin, Jaczewskiego St. 8b, 20-090, Lublin, Poland
| | | | - Teresa Martins
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
| | - Wietske van der Ent
- Chemical Neuroscience Group, Centre for Molecular Medicine Norway (NCMM), University of Oslo, Gaustadalléen 21, Forskningsparken, 0349, Oslo, Norway
| | - Ettore Tiraboschi
- Chemical Neuroscience Group, Centre for Molecular Medicine Norway (NCMM), University of Oslo, Gaustadalléen 21, Forskningsparken, 0349, Oslo, Norway; Neurophysics Group, Center for Mind/Brain Sciences, University of Trento, Piazza Manifattura 1, Building 14, 38068, Rovereto, TN, Italy
| | - Maxime Jacmin
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg
| | - Alexander D Crawford
- Luxembourg Centre for Systems Biomedicine (LCSB), University of Luxembourg, Belval, Luxembourg; Faculty of Veterinary Medicine, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Camila V Esguerra
- Chemical Neuroscience Group, Centre for Molecular Medicine Norway (NCMM), University of Oslo, Gaustadalléen 21, Forskningsparken, 0349, Oslo, Norway.
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21
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Verma KK, Singh UK, Jain J. Design, Synthesis and Biological Activity of Some 4, 5-Disubstituted-2, 4- Dihydro-3H-1, 2, 4- Triazole-3-Thione Derivatives. Cent Nerv Syst Agents Med Chem 2020; 19:197-205. [PMID: 31749420 DOI: 10.2174/1871524919666190722144424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2019] [Revised: 07/08/2019] [Accepted: 07/12/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND In the present study, 4, 5-disubstituted triazol-3-thione derivatives were synthesized and evaluated for anticonvulsant activity along with neurotoxicity determination. MATERIALS AND METHODS The synthesized compounds were characterized using FTIR, 1H-NMR and MS. The anticonvulsant activity was assessed by Maximal Electroshock (MES) test and subcutaneous Pentylenetetrazole (scPTZ) tests and neurotoxicity was assessed by rotarod test. Docking was also performed to study the interactions of compounds with LYS329 residue of gamma amino butyric acid aminotransferase (GABA-AT) using Autodock 4.2 software. RESULTS The compounds 7a and 9a with significant pharmacological activity were also found to interact with LYS329 residue of GABA-AT by H-bond with a docking score of -5.92 kcal/mol (Ki = 41.99 μM) and -5.87 kcal/mol (Ki = 49.83 μM) respectively. CONCLUSION Most of the compounds were found to be active in MES test but only seven showed protection in scPTZ test.
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Affiliation(s)
- Krishan Kumar Verma
- Department of Pharmacy, Ram-Eesh Institute of Vocational & Technical Education, Knowledge Park-I, Greater Noida, UP, India
| | - Umesh Kumar Singh
- Kherwal Department of Pharmacy, Swami Vivekanand Subharti University, Meerut Bypass, Meerut, UP, India
| | - Jainendra Jain
- Department of Pharmacy, Ram-Eesh Institute of Vocational & Technical Education, Knowledge Park-I, Greater Noida, UP, India
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22
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Abd-Allah WH, Osman EEA, Anwar MAEM, Attia HN, El Moghazy SM. Design, synthesis and docking studies of novel benzopyrone derivatives as anticonvulsants. Bioorg Chem 2020; 98:103738. [PMID: 32179283 DOI: 10.1016/j.bioorg.2020.103738] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/09/2020] [Accepted: 03/07/2020] [Indexed: 01/02/2023]
Abstract
A series of coumarin derivatives 6-8, 9a-h, 11 and 13a, b -16a, b was synthesized and screened for their anticonvulsant profile. Screening of these analogues using the 'gold standard methods' revealed variable anticonvulsant potential with remarkable effects observed particularly in chemically-induced seizure test. Compounds 6, 7, 13b disclosed the highest potency among the series with 100% protection against scPTZ. Quantification study confirmed that compound 6 (ED50 0.238 mmol/kg) was the most active congener in the scPTZ model and was approximately 1.5 folds more potent than ethosuximide as reference drug Meanwhile, in the MES test, candidate drugs exhibited mild to moderate anticonvulsant efficacy, the highest of which was compound 14a, imparting 50% protection at 2.1 mmol/kg, followed by other compounds with activity ranging from 14 to 33%, as compared to diphenylhydantoin. Additionally, all candidate compounds were screened for acute neurotoxicity using the rotarod method to identify motor impairment, where almost all compounds passed the test. Further neurochemical investigation was performed to unravel the effect of the most active compound (6) on GABA level in mouse brain, where a significant elevation was evident by 4 and 1.4 folds with respect to that of the control and reference groups at p < 0.05. Molecular modeling study using Discovery Studio program was performed, where compound 6 exhibited good binding interaction with γ-aminobutyric acid aminotransferase (GABA-AT) enzyme and this was consistent with the attained experimental results.
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Affiliation(s)
- Walaa Hamada Abd-Allah
- Pharmaceutical Chemistry Department, College of Pharmaceutical Science and Drug Manufacturing, Misr University for Science & Technology, P.O. 77, 6th of October City, Giza, Egypt.
| | - Essam Eldin A Osman
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
| | - Mostafa Abd-El-Mohsen Anwar
- Pharmaceutical Chemistry Department, College of Pharmaceutical Science and Drug Manufacturing, Misr University for Science & Technology, P.O. 77, 6th of October City, Giza, Egypt
| | - Hanan Naeim Attia
- Medicinal and Pharmaceutical Chemistry Department (Pharmacology Group) Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), P.O. 12622, Dokki, Giza, Egypt
| | - Samir M El Moghazy
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Cairo University, 11562 Cairo, Egypt
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23
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Design and synthesis of novel parabanic acid derivatives as anticonvulsants. Bioorg Chem 2020; 94:103473. [DOI: 10.1016/j.bioorg.2019.103473] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/21/2019] [Accepted: 11/23/2019] [Indexed: 12/15/2022]
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24
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Huang L, Ding J, Li M, Hou Z, Geng Y, Li X, Yu H. Discovery of [1,2,4]-triazolo [1,5-a]pyrimidine-7(4H)-one derivatives as positive modulators of GABAA1 receptor with potent anticonvulsant activity and low toxicity. Eur J Med Chem 2020; 185:111824. [DOI: 10.1016/j.ejmech.2019.111824] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/12/2019] [Accepted: 10/25/2019] [Indexed: 01/31/2023]
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25
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Dong S, Liu Y, Xu J, Hu Y, Huang L, Wang Z. Synthesis and Evaluation of N-substituted (Z)-5-(Benzo[d][1,3]dioxol-5- ylmethylene)-2-Thioxothiazolidin-4-one Derivatives and 5-Substituted- Thioxothiazolidindione Derivatives as Potent Anticonvulsant Agents. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2019; 18:798-807. [PMID: 31742497 DOI: 10.2174/1871527318666191119125515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 07/24/2019] [Accepted: 11/05/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Epilepsy is a serious and common neurological disorder threatening the health of humans. Despite enormous progress in epileptic research, the anti-epileptic drugs present many limitations. These limitations prompted the development of more safer and effective AEDs. METHODS A series of N-substituted (Z)-5-(benzo[d][1,3]dioxol-5-ylmethylene)- 2-thioxothiazolidin-4- one derivatives and 5-substituted-thioxothiazolidindione derivatives were designed, synthesized and tested for anticonvulsant activity against maximal electroshock (MES) and subcutaneous pentylenetetrazole (scPTZ). Neurotoxicity was determined by the rotarod test. RESULTS Among them, the most potent 4e displayed high protection against MES-induced seizures with an ED50 value of 9.7 mg/kg and TD50 value of 263.3 mg/kg, which provided 4e with a high protective index (TD50/ED50) of 27.1 comparable to reference antiepileptic drugs. 4e clearly inhibits the NaV1.1 channel in vitro. The molecular docking study was conducted to exploit the results. CONCLUSION Stiripentol is a good lead compound for further structural modification. Compound 4e was synthesized, which displayed remarkable anticonvulsant activities, and the NaV1.1 channel inhibition was involved in the mechanism of action of 4e.
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Affiliation(s)
- Shiyang Dong
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Yanhua Liu
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Jun Xu
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Yue Hu
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Limin Huang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Zengtao Wang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
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26
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Liu D, Cheng X, Wang Y. Design, Synthesis and Biological Evaluation of Benzo[D]Thiazole with Dimethylpyrazol Derivatives. Asian Pac J Cancer Prev 2019; 20:3487-3495. [PMID: 31759376 PMCID: PMC7062998 DOI: 10.31557/apjcp.2019.20.11.3487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Indexed: 12/05/2022] Open
Abstract
A series of new benzothiazole derivatives containing dimethylpyrazole were synthesized and evaluated for their anticonvulsant activity, neurotoxicity and cytotoxicity by using the maximal electroshock (MES), rotarod neurotoxicity (TOX) and MTT colorimetric assay. Among the compounds studied, four compounds (6a, 6b, 6g and 6m) showed better anticonvulsant than the others at 300 mg/kg and they also showed anticonvulsant activity at the dose of 100 mg/kg. All the synthetic compounds showed lower neurotoxicity and little cytotoxicity, so that the compounds, which with better activities, also had higher protective index. In particular, the compound 6g, 2-(3,5-dimethyl-1H-pyrazol-1-yl)-6-((2-fluorobenzyl)oxy)benzo[d]thiazole showed better activity with an ED50 value of 160.4 mg/kg and higher protective index (PI) values of 2.74 in the MES test than the standard drugs sodium valproate, which used as positive controls in this study. After that the compound 6g demonstrated antagonistic activity against seizures induced by pentylenetetrazol, which proved 6g maybe exert activity through effecting GABAergic neurotransmission.
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Affiliation(s)
- Dachuan Liu
- School of Pharmacy, Bengbu Medical College, Bengbu, China
| | - Xiu Cheng
- School of Pharmacy, Bengbu Medical College, Bengbu, China
| | - Ying Wang
- School of Public Foundation, Bengbu Medical College, Bengbu, China
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Wang S, Liu H, Wang X, Lei K, Li G, Li X, Wei L, Quan Z. Synthesis and evaluation of anticonvulsant activities of 7‐phenyl‐4,5,6,7‐tetrahydrothieno[3,2‐
b
]pyridine derivatives. Arch Pharm (Weinheim) 2019; 352:e1900106. [DOI: 10.1002/ardp.201900106] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/27/2019] [Accepted: 06/18/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Shiben Wang
- College of PharmacyLiaocheng University Liaocheng Shandong China
| | - Hui Liu
- College of Life SciencesLiaocheng University Liaocheng Shandong China
| | - Xuekun Wang
- College of PharmacyLiaocheng University Liaocheng Shandong China
| | - Kang Lei
- College of PharmacyLiaocheng University Liaocheng Shandong China
| | - Guangyong Li
- College of PharmacyLiaocheng University Liaocheng Shandong China
| | - Xiaojing Li
- College of PharmacyLiaocheng University Liaocheng Shandong China
| | - Lichao Wei
- College of PharmacyLiaocheng University Liaocheng Shandong China
| | - Zheshan Quan
- College of PharmacyYanbian University Yanji Jilin China
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Jin Q, Fu Z, Guan L, Jiang H. Syntheses of Benzo[ d]Thiazol-2(3 H)-One Derivatives and Their Antidepressant and Anticonvulsant Effects. Mar Drugs 2019; 17:md17070430. [PMID: 31340514 PMCID: PMC6669756 DOI: 10.3390/md17070430] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 07/18/2019] [Accepted: 07/19/2019] [Indexed: 11/28/2022] Open
Abstract
Thirty-four new benzo[d]thiazol derivatives 2a–2i, 3a–3r, and 4a–4g were synthesized and investigated for their potential antidepressant and anticonvulsant effects. In a forced swimming test, 2c and 2d showed the highest antidepressant and anticonvulsant effects. 2c and 2d displayed a higher percentage decrease in immobility duration (89.96% and 89.62%, respectively) than that of fluoxetine (83.62%). In the maximal electroshock seizure test, 3n and 3q showed the highest anticonvulsant effect, with ED50 values of 46.1 and 64.3 mg kg−1, and protective indices of 6.34 and 4.11, respectively, which were similar to those of phenobarbital or valproate. We also found that the mechanism for the antidepressant activity of 2c and 2d may be via increasing the concentrations of serotonin and norepinephrine.
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Affiliation(s)
- Qinghao Jin
- Donghai Science and Technology College, Zhejiang Ocean University, Zhoushan 316000, China
| | - Zhiyang Fu
- Food and Pharmacy College, Zhejiang Ocean University, Zhoushan 316022, China
| | - Liping Guan
- Food and Pharmacy College, Zhejiang Ocean University, Zhoushan 316022, China.
| | - Haiying Jiang
- College of Medicine, Jiaxing University, Jiaxing 314001, China.
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Alonso-Castro AJ, Alba-Betancourt C, Yáñez-Barrientos E, Luna-Rocha C, Páramo-Castillo AS, Aragón-Martínez OH, Zapata-Morales JR, Cruz-Jiménez G, Gasca-Martínez D, González-Ibarra AA, Álvarez-Camacho DA, Devezé-Álvarez MA. Diuretic activity and neuropharmacological effects of an ethanol extract from Senna septemtrionalis (Viv.) H.S. Irwin & Barneby (Fabaceae). JOURNAL OF ETHNOPHARMACOLOGY 2019; 239:111923. [PMID: 31034951 DOI: 10.1016/j.jep.2019.111923] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 04/22/2019] [Accepted: 04/25/2019] [Indexed: 06/09/2023]
Abstract
UNLABELLED Ethnopharmacological relevance Senna septemtrionalis (Viv.) H.S. Irwin & Barneby (Fabaceae) is a shrub empirically used as diuretic, and for the treatment of neurological disorders. These pharmacological effects have not been previously evaluated. AIM OF THE STUDY To evaluate the diuretic and CNS effects of a standardized ethanol extract of Senna septemtrionalis aerial parts (SSE). MATERIALS AND METHODS Gas chromatography mass spectrometry was used to perform a chemical analysis with SSE. In all tests, SSE was evaluated from 10 to 100 mg/kg p.o. The diuretic activity of SSE was assessed in mice individually placed in metabolic cages. After 6 h, the urine volume and the electrolyte excretion (Na and K) were measured. The role of prostaglandins and nitric oxide was assessed administrating mice with indomethacin and N(ω)-nitro-L-arginine methyl ester (L-NAME), prior the administration of 100 mg/kg SSE. The sedative effects of SSE were analyzed with the pentobarbital-induced sleeping time test. The effects of SSE on motor coordination in mice were evaluated with the rotarod test. The antidepressant-like activity of SSE was analyzed with the forced swimming test (FST) and the tail suspension test (TST). The role of 5-HT2 receptor, α1-and α2-adrenoceptors, or muscarinic receptors was assessed administrating mice with cyproheptadine, prazosin, yohimbine, and atropine, respectively, prior the administration of 100 mg/kg SSE in the FST. The anxiolytic-like activity of SSE (10-100 mg/kg p.o.) was assessed using the light-dark test (LDB), the elevated plus maze test (EPM), the cylinder exploratory test, and the open field test (OFT). The anticonvulsant effect of SSE (1-100 mg/kg) was evaluated in mice administered with different convulsant agents: strychnine, pentylenetetrazol (PTZ), isoniazid (INH) or yohimbine. RESULTS The main compound found in SSE was D-pinitol (42.2%). SSE (100 mg/kg) increased the urinary volume (2.67-fold), as well as the excretion of Na (5.60-fold) and K (7.2-fold). The co-administration of SSE with L-NAME or indomethacin reverted the diuretic activity shown by SSE alone. SSE lacked sedative effects and did not affect motor coordination in mice. SSE (100 mg/kg) showed higher and similar antidepressant-like effect, compared to 20 mg/kg fluoxetine, in the FST and TST, respectively. The co-administration of SSE with yohimbine reverted the antidepressant-like activity shown by SSE alone. SSE (100 mg/kg) showed anxiolytic-like activity in the four models of anxiety, with similar activity with 1.5 mg/kg clonazepam. The seizure-protective effect of SSE was ED50 = 73.9 ± 8.4 mg/kg (INH) and 40.4 ± 5.2 mg/kg (yohimbine). CONCLUSION The diuretic effects of SSE involve the possible contribution of prostaglandins and nitric oxide. SSE showed moderate anxiolytic and anticonvulsant effects, whereas the participation of α2-adrenoceptors is probably associated in the antidepressant-like effects of SSE.
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Affiliation(s)
- Angel Josabad Alonso-Castro
- División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta, 36050, Guanajuato, Gto, Mexico.
| | - Clara Alba-Betancourt
- División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta, 36050, Guanajuato, Gto, Mexico
| | - Eunice Yáñez-Barrientos
- División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta, 36050, Guanajuato, Gto, Mexico
| | - Cynthia Luna-Rocha
- División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta, 36050, Guanajuato, Gto, Mexico
| | | | | | - Juan Ramón Zapata-Morales
- División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta, 36050, Guanajuato, Gto, Mexico
| | - Gustavo Cruz-Jiménez
- División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta, 36050, Guanajuato, Gto, Mexico
| | - Deisy Gasca-Martínez
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Juriquilla, Querétaro, Mexico
| | | | | | - Martha Alicia Devezé-Álvarez
- División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Noria Alta, 36050, Guanajuato, Gto, Mexico.
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Akhigbemen AM, Ozolua RI, Bafor EE, Okwuofu EO. Evaluation of some neuropharmacological effects of Caladium bicolor aiton (araceae) leaf extracts in mice. Metab Brain Dis 2019; 34:537-544. [PMID: 30729385 DOI: 10.1007/s11011-019-0390-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 01/27/2019] [Indexed: 11/26/2022]
Abstract
Caladium bicolor Aiton (Araceae) is used in ethnomedicine for the treatment of boils, wound ulcers and convulsion. This study investigated the effects of the leaf extracts on some neuropharmacological parameters. The leaves were collected, dried, powdered and then extracted by maceration in methanol to yield the whole extract (WE). Extraction was also done using n-hexane, ethyl acetate and methanol in a Soxhlet apparatus to obtain n-hexane (HE), ethyl acetate (EA) and methanol (ME) extracts. Preliminary phytochemical screening was done using the whole extract. Some neuropharmacological evaluations were carried out using standard methods. Phytochemical screening revealed the presence of carbohydrates, proteins, alkaloids and flavonoids. WE showed varying levels of protection against strychnine-induced convulsion. Each of HE, EA and ME increased latency (P < 0.01) to pentylenetetrazole-induced convulsion and offered varying levels of protection against maximal electroshock-induced seizure. Each of WE, HE and ME significantly increased the duration of stay on the open arm of the elevated plus maze. Both EA and ME at doses of 100 and 200 mg/kg, and HE at a dose of 400 mg/kg significantly reduced the duration of immobility in forced swim test. It is concluded that the leaf extracts possess anticonvulsant, anxiolytic and antidepressant properties.
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Affiliation(s)
- Abigail M Akhigbemen
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, University of Benin, Benin City, 300001, Nigeria.
| | - Raymond I Ozolua
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, University of Benin, Benin City, 300001, Nigeria
| | - Enitome E Bafor
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, University of Benin, Benin City, 300001, Nigeria
| | - Emmanuel O Okwuofu
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, University of Benin, Benin City, 300001, Nigeria
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31
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Sarafroz M, Khatoon Y, Ahmad N, Amir M, Salahuddin S, Hyder Pottoo F. Synthesis, Characterization and Anticonvulsant Activity of Novel Fused 1,2,4-Triazolo-1,3,4-Thiadiazoles. ACTA ACUST UNITED AC 2019. [DOI: 10.13005/ojc/350107] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A novel category of 1,2,4-triazolo-1,3,4-thiadiazoles were ready by the utilization of 3-amino-4-hydroxybenzoate as the beginning material. Spectral information results were used for the establishing of prepared compounds. Compounds were screened anticonvulsant activity for obtaining better results by MES test and scPTZ methods. The rotarod method was used for neurotoxicity analysis. Majority of the compounds displayed distinguished anticonvulsant impact practically identical to standard drugs (phenytoin and carbamazepine) with slight neurotoxicity.
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Affiliation(s)
- Mohammad Sarafroz
- Department of Pharmaceutical Chemistry, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, City Dammam, Saudi Arabia
| | - Yasmin Khatoon
- School of Pharmacy, Department of Pharmaceutical Chemistry, Sharda University, Knowledge Park III, Greater Noida, Uttar Pradesh, India
| | - Niyaz Ahmad
- Department of Pharmaceutics, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, City Dammam, Saudi Arabia
| | - Mohammad Amir
- Department of Pharmacognosy and Phytochemistry, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, City Dammam, Saudi Arabia
| | - Salahuddin Salahuddin
- Department of Pharmaceutical Chemistry, Noida institute of Engineering and Technology (Pharmacy Institute), Greater Noida, Uttar Pradesh, India
| | - Faheem Hyder Pottoo
- Department of Pharmacology, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, City Dammam, Saudi Arabia
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32
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Asif M, Singh A, Khan SA, Husain A. Studies on new substituted pyridazinones: synthesis and biological evaluation. BRAZ J PHARM SCI 2018. [DOI: 10.1590/s2175-97902018000300040] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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33
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Firdaus JU, Habib A, Siddiqui N, Alam O, Naim MJ, Partap S, Sahu M. Design, synthesis, and molecular docking study of benzothiazolotriazine derivatives for anticonvulsant potential. Arch Pharm (Weinheim) 2018; 351:e1800154. [DOI: 10.1002/ardp.201800154] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2018] [Revised: 10/18/2018] [Accepted: 10/21/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Jannat Ul Firdaus
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard; New Delhi India
| | - Anwar Habib
- Department of Medicine, HIMSR; Jamia Hamdard; New Delhi India
| | - Nadeem Siddiqui
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard; New Delhi India
| | - Ozair Alam
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard; New Delhi India
| | - Mohd. Javed Naim
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard; New Delhi India
| | - Sangh Partap
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard; New Delhi India
| | - Meeta Sahu
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research; Jamia Hamdard; New Delhi India
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34
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Study on synthesis and biological effects of a series of 3,4-dihydroisoquinoline-2(1H)-carboxamide derivatives. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2261-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Aboul-Enein MN, El-Azzouny AA, Amin KM, Aboutabl ME, Abo-Elmagd MI. Synthesis, molecular modeling studies, and anticonvulsant evaluation of novel 1-((2-hydroxyethyl)(aryl)amino)-N-substituted cycloalkanecarboxamides and their acetate esters. Arch Pharm (Weinheim) 2018; 351:e1800269. [PMID: 30461033 DOI: 10.1002/ardp.201800269] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 10/16/2018] [Accepted: 10/17/2018] [Indexed: 12/20/2022]
Abstract
A series of 1-((2-hydroxyethyl)(aryl)amino)-N-substituted cycloalkanecarboxamides IXa-l and their acetate esters Xa-l were designed and synthesized as new anticovulsant agents. The evaluation of the anticonvulsant effect was performed in vivo by subcutaneous pentylenetetrazole (scPTZ) and maximal electroshock (MES) tests in mice. Further, neurotoxicity, hepatotoxicity, and acute toxicity were determined. All the new candidates displayed 100% anticonvulsant activity in the scPTZ screen in the dose range of 0.0057-0.283 mmol/kg. The most potent compounds in the scPTZ screen were Xh (ED50 = 0.0012 mmol/kg), Xd (ED50 = 0.002 mmol/kg), Xf (ED50 = 0.004 mmol/kg), IXj (ED50 = 0.0047 mmol/kg), Xl (ED50 = 0.0076 mmol/kg), and Xi (ED50 = 0.008 mmol/kg). They exhibited higher fold activity in the anticonvulsant potential than the gold standards, phenobarbital and ethosuximide. Compound Xf was active in both scPTZ and MES screens. It showed ED50 of 0.016 mmol/kg in MES screen. In the neurotoxicity screens, none of the test compounds displayed any minimal motor impairment at the maximum administered dose. The 3D pharmacophore model using Biova 1 Discovery Studio 2016 programs exhibited high fit value. The anticonvulsant evaluation results were compatible with the molecular modeling study.
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Affiliation(s)
- Mohamed N Aboul-Enein
- Department of Medicinal and Pharmaceutical Chemistry, Medicinal Chemistry Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
| | - Aida A El-Azzouny
- Department of Medicinal and Pharmaceutical Chemistry, Medicinal Chemistry Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
| | - Kamilia M Amin
- Faculty of Pharmacy, Department of Pharmaceutical Chemistry, Cairo University, Cairo, Egypt
| | - Mona E Aboutabl
- Department of Medicinal and Pharmaceutical Chemistry, Pharmacology Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
| | - Mai I Abo-Elmagd
- Department of Medicinal and Pharmaceutical Chemistry, Medicinal Chemistry Group, Pharmaceutical and Drug Industries Research Division, National Research Centre (ID: 60014618), Dokki, Giza, Egypt
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Scaffold hopping-guided design of some isatin based rigid analogs as fatty acid amide hydrolase inhibitors: Synthesis and evaluation. Biomed Pharmacother 2018; 107:1611-1623. [DOI: 10.1016/j.biopha.2018.08.125] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 12/17/2022] Open
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Das S, Gul HI, Das U, Balzarini J, Dimmock SG, Dimmock JR. Novel Conjugated Unsaturated Ketones with Submicromolar Potencies Towards some Leukemic and Colon Cancer Cells. Med Chem 2018; 15:430-438. [PMID: 30324886 DOI: 10.2174/1573406414666181015142633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 10/03/2018] [Accepted: 10/03/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Cancer continues to be the major health burden worldwide. There is an urgent need for the development of novel antineoplastic compounds to treat this devastating condition. Various alkylating anticancer drugs have been employed in the clinic for treating cancers. Unsaturated conjugated ketones are a group of alkylators which are of significant interest as potent antineoplastic agents. OBJECTIVE The goal of this study is to discover unsaturated conjugated ketones which are novel potent cytotoxins displaying growth-inhibitory properties towards neoplasms and also to serve as cytotoxic warheads in drug development. METHODS A variety of 3,5-bis (benzylidene)-4-piperidones 2a-n were synthesized and evaluated against a number of neoplastic cell lines. The short-term neurotoxicity of 2a-k, n was evaluated in mice by i.p. administration using doses level of 30, 100 and 300 mg/kg. Statistical correlations for determining structure-activity relationships were performed using an SPSS software. RESULTS A number of compounds display cytotoxic potencies in the region of 10-7 to 10-8 M and some of the structural features contributing to the cytotoxicity were identified. Compounds 2a-d, 2h demonstrated substantially higher cytotoxic potencies compared to melphalan and 5- fluorouracil against a panel of leukemic and colon cancer cell lines. These lead cytotoxins comply with drug-likeness properties. In general, the antineoplastics 2 are well tolerated in mice using a short-term neurotoxicity screening. CONCLUSION In general, this group of compounds comprises excellent cytotoxic agents, which warrant their further development as cytotoxic warheads.
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Affiliation(s)
- Swagatika Das
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, 104 Clinic Place, Saskatoon, Saskatchewan S7N 2Z5, Canada
| | - H Inci Gul
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, 104 Clinic Place, Saskatoon, Saskatchewan S7N 2Z5, Canada
| | - Umashankar Das
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, 104 Clinic Place, Saskatoon, Saskatchewan S7N 2Z5, Canada
| | - Jan Balzarini
- Rega Institute for Medical Research, KU Leuven, B- 3000, Leuven, Belgium
| | - Stephen G Dimmock
- Department of Finance, Nanyang Technological University, Singapore 539798, Singapore
| | - Jonathan R Dimmock
- Drug Discovery and Development Research Group, College of Pharmacy and Nutrition, University of Saskatchewan, 104 Clinic Place, Saskatoon, Saskatchewan S7N 2Z5, Canada
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Harnessing the medicinal properties of Cussonia barteri Seem. ( Araliaceae) in drug development. A review. HERBA POLONICA 2018. [DOI: 10.2478/hepo-2018-0018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Summary
Cussonia barteri Seem (Araliaceae) is a deciduous tree growing in savannah of Africa. Ethnomedicinally, it is used in Africa as an analgesic, anti-malarial, anti-inflammatory, anti-anaemic, anti-diarhoea, anti-poison, ani-pyschotic and anti-epileptic agent. This review provides a brief summary on the phytochemical screenings, ethnomedicinal and pharmacological applications of various parts of C. barteri. Leaves, stem bark and seed of C. barteri have been shown to be rich in saponins, flavonoids, phenols, sugars and alkaloids. Some of these constituents have been isolated and elucidated from C. barteri. Several compounds isolated from plant include triterpenes, saponins, polyenyne and quinic esters. Phytochemical constituents are also partly responsible for biological activities of C. barteri. Extracts and components isolated from the plant have demonstrated neuropharmacological, anti-larvicidal, anti-microbial, anti-inflammatory and antioxidant activities. Overall, the insights provided by this review reinforce the potential of C. barteri for drug development and create the need for further scientific probe of constituents of the plant with the aim of developing novel drug candidates.
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Wang T, Dong S, Chen X, Qian K, Wang H, Quan H, Zhang Z, Zuo Y, Huang L, Li D, Yang M, Yang S, Jin Y, Wang Z. Design, synthesis, biological evaluation, homology modeling and docking studies of (E)-3-(benzo[d][1,3]dioxol-5-ylmethylene) pyrrolidin-2-one derivatives as potent anticonvulsant agents. Bioorg Med Chem Lett 2018; 28:1324-1329. [PMID: 29548572 DOI: 10.1016/j.bmcl.2018.03.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 02/18/2018] [Accepted: 03/05/2018] [Indexed: 11/15/2022]
Abstract
A series of (E)-3-(benzo[d][1,3]dioxol-5-ylmethylene)pyrrolidin-2-one derivatives were designed, synthesized, and evaluated for their anticonvulsant activities. In the preliminary screening, compounds 5, 6a-6f and 6h-6i showed promising anticonvulsant activities in MES model, while 6f and 6g represented protection against seizures at doses of 100 mg/kg and 0.5 h in scPTZ model. The most active compound 6d had a high-degree protection against the MES-induced seizures with ED50 value of 4.3 mg/kg and TD50 value of 160.9 mg/kg after intraperitoneal (i.p.) injection in mice, which provided 6d in a high protective index (TD50/ED50) of 37.4 comparable to the reference drugs. Beyond that, 6d has been selected and evaluated in vitro experiment to estimate the activation impact. Apparently, 6d clearly inhibits the Nav1.1 channel. Our preliminary results provide new insights for the development of small-molecule activators targeting specifically Nav1.1 channels to design potential drugs for treating epilepsy. The computational parameters, such as homology modeling, docking study, and ADME prediction, were made to exploit the results.
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Affiliation(s)
- Tiantian Wang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Nanchang 330006, China
| | - Shiyang Dong
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; College of Pharmacy, Hubei University of Science and Technology, Xianning 437100, China
| | - Xiaodong Chen
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Kun Qian
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Huayu Wang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Hexiu Quan
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Nanchang 330006, China; Basic Medical College, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Zhongli Zhang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Yueming Zuo
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Liping Huang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China
| | - Dongxun Li
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Nanchang 330006, China
| | - Ming Yang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; Key Laboratory of Modern Preparation of TCM, Ministry of Education, Jiangxi University of Traditional Chinese Medicine, Nanchang, Jiangxi, China
| | - Shilin Yang
- The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Nanchang 330006, China
| | - Yi Jin
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China; The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Nanchang 330006, China
| | - Zengtao Wang
- College of Pharmacy, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004, China.
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Synthesis and Evaluation of the Anticonvulsant Activities of 4-(2-(Alkylthio)benzo[d]oxazol-5-yl)-2,4-dihydro-3H-1,2,4-triazol-3-ones. Molecules 2018; 23:molecules23040756. [PMID: 29587394 PMCID: PMC6017283 DOI: 10.3390/molecules23040756] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 12/13/2022] Open
Abstract
In this study, a novel series of 4-(2-(alkylthio)benzo[d]oxazol-5-yl)-2,4-dihydro-3H-1,2,4-triazol-3-ones (4a-m) was designed and synthesized. The anticonvulsant activities of these compounds were evaluated by using the maximal electroshock seizure (MES) and subcutaneous pentylenetetrazole (scPTZ) seizure models in mice. The neurotoxicity of these compounds was evaluated using the rotarod neurotoxicity test. The majority of compounds showed anti-MES activities at 100 or 300 mg/kg. Compound 4g was considered to be the most promising, based on its potency against MES- and PTZ-induced seizures with ED50 values of 23.7 and 18.9 mg/kg, respectively. The TD50 value of 4g was 284.0 mg/kg, which resulted in a higher protective index (PI = TD50/ED50) value than that of carbamazepine and valproate. In an ELISA test, compound 4g significantly increased the γ-aminobutyric acid (GABA) content in mouse brain. In addition, pretreatment with thiosemicarbazide (an inhibitor of the GABA synthesizing enzyme) significantly decreased the activity of 4g in the MES model, which suggests that the mechanism through which compound 4g elicits its anticonvulsive action is at least in part through increasing the GABA level in the brain.
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He X, Bai Y, Zeng M, Zhao Z, Zhang Q, Xu N, Qin F, Wei X, Zhao M, Wu N, Li Z, Zhang Y, Fan TP, Zheng X. Anticonvulsant activities of α-asaronol (( E )-3′-hydroxyasarone), an active constituent derived from α-asarone. Pharmacol Rep 2018; 70:69-74. [DOI: 10.1016/j.pharep.2017.08.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 07/25/2017] [Accepted: 08/14/2017] [Indexed: 11/30/2022]
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Khajouei MR, Mohammadi-Farani A, Moradi A, Aliabadi A. Synthesis and evaluation of anticonvulsant activity of ( Z)-4-(2-oxoindolin-3-ylideneamino)- N-phenylbenzamide derivatives in mice. Res Pharm Sci 2018; 13:262-272. [PMID: 29853935 PMCID: PMC5921406 DOI: 10.4103/1735-5362.228956] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Due to resistance of some epileptic patients to the current medications and the general incidence of severe side effects of these drugs, development and discovery of novel antiepileptic drugs is crucial. Isatin-based derivatives are promising compounds as antiepileptic agents. In this study a new series of isatin-containing derivatives were synthesized via the imine formation between isatin and p-aminobenzoic acid. Subsequently, the obtained acidic compound was utilized to prepare the final amidic derivatives (4a-4l) through the reaction with various aniline derivatives. Then, their anti-seizure activity was investigated using maximal electroshock seizure (MES) as well as pentylenetetrazole (PTZ) models in mice. Neurotoxicity of target compounds was also determined by rotarod test. Tested isatin-based derivatives exhibited a favorable protection in both MES and PTZ procedures with high safety levels in neurotoxicity test. The introduced derivatives have demonstrated remarkable activity in mice and could be suggested as potential anticonvulsant lead compounds. All methoxylated derivatives (4j, 4k, 4l) showed a significant anti-seizure activity in MES model. Compounds 4j (2-OCH3) and 4l (4-OCH3) also demonstrated a potent anti-seizure activity against PTZ. Compound 4k (m-OCH3) did not induce protection towards PTZ-induced convulsion.
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Affiliation(s)
- Marzieh Rahmani Khajouei
- Isfahan Pharmaceutical Sciences Research Center, Isfahan, I.R. Iran.,Pharmaceutical Sciences Research Center, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran.,Department of Medicinal Chemistry, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran
| | - Ahmad Mohammadi-Farani
- Pharmaceutical Sciences Research Center, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran.,Department of Pharmacology, Toxicology and Medical Services, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran
| | - Aref Moradi
- Department of Medicinal Chemistry, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran.,Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran
| | - Alireza Aliabadi
- Pharmaceutical Sciences Research Center, School of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran.,Department of Medicinal Chemistry, Faculty of Pharmacy, Kermanshah University of Medical Sciences, Kermanshah, I.R. Iran
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Tripathi RKP, M Sasi V, Gupta SK, Krishnamurthy S, Ayyannan SR. Design, synthesis, and pharmacological evaluation of 2-amino-5-nitrothiazole derived semicarbazones as dual inhibitors of monoamine oxidase and cholinesterase: effect of the size of aryl binding site. J Enzyme Inhib Med Chem 2017; 33:37-57. [PMID: 29098902 PMCID: PMC6009888 DOI: 10.1080/14756366.2017.1389920] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
A series of 2-amino-5-nitrothiazole derived semicarbazones were designed, synthesised and investigated for MAO and ChE inhibition properties. Most of the compounds showed preferential inhibition towards MAO-B. Compound 4, (1-(1-(4-Bromophenyl)ethylidene)-4-(5-nitrothiazol-2-yl)semicarbazide) emerged as lead candidate (IC50 = 0.212 µM, SI = 331.04) against MAO-B; whereas compounds 21 1-(5-Bromo-2-oxoindolin-3-ylidene)-4-(5-nitrothiazol-2-yl)semicarbazide (IC50 = 0.264 µM) and 17 1-((4-Chlorophenyl) (phenyl)methylene)-4-(5-nitrothiazol-2-yl)semicarbazide (IC50 = 0.024 µM) emerged as lead AChE and BuChE inhibitors respectively; with activity of compound 21 almost equivalent to tacrine. Kinetic studies indicated that compound 4 exhibited competitive and reversible MAO-B inhibition while compounds 21 and 17 showed mixed-type of AChE and BuChE inhibition respectively. Docking studies revealed that these compounds were well-accommodated within MAO-B and ChE active sites through stable hydrogen bonding and/or hydrophobic interactions. This study revealed the requirement of small heteroaryl ring at amino terminal of semicarbazone template for preferential inhibition and selectivity towards MAO-B. Our results suggest that 5-nitrothiazole derived semicarbazones could be further exploited for its multi-targeted role in development of anti-neurodegenerative agents. [Formula: see text] A library of 2-amino-5-nitrothiazole derived semicarbazones (4-21) was designed, synthesised and evaluated for in vitro MAO and ChE inhibitory activity. Compounds 4, 21 and 17 (shown) have emerged as lead MAO-B (IC50:0.212 µM, competitive and reversible), AChE (IC50:0.264 µM, mixed and reversible) and BuChE (IC50:0.024 µM, mixed and reversible) inhibitor respectively. SAR studies disclosed several structural aspects significant for potency and selectivity and indicated the role of size of aryl binding site in potency and selectivity towards MAO-B. Antioxidant activity and neurotoxicity screening results further suggested their multifunctional potential for the therapy of neurodegenerative diseases.
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Affiliation(s)
- Rati K P Tripathi
- a Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , India
| | - Vishnu M Sasi
- a Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , India
| | - Sukesh K Gupta
- b Neurotherapeutics Research Laboratory, Department of Pharmaceutical Engineering & Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , India
| | - Sairam Krishnamurthy
- b Neurotherapeutics Research Laboratory, Department of Pharmaceutical Engineering & Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , India
| | - Senthil R Ayyannan
- a Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology , Indian Institute of Technology (Banaras Hindu University) , Varanasi , India
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Synthesis and anticonvulsant activity of some novel 7-(benzylamino) -1H-benzo[b][1,4]diazepine-2,4(3H, 5H)-dione derivatives. Med Chem Res 2017. [DOI: 10.1007/s00044-017-2089-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Prasad Tripathi RK, Ayyannan SR. Anticonvulsant activity, organotypic hippocampal neuroprotection assay and in-silico sodium channel blocking potential of 2-amino-6-nitrobenzothiazole derived semicarbazones. Biomed Pharmacother 2017; 95:1451-1460. [PMID: 28946193 DOI: 10.1016/j.biopha.2017.09.070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/29/2017] [Accepted: 09/13/2017] [Indexed: 10/18/2022] Open
Abstract
Epilepsy is one of the dreadful neurodegenerative disorder characterized by recurrent, unprovoked seizures. Currently available antiepileptic drugs are still associated with enormous side effects resulting in search of newer, more effective and safer agents. In view of this, we have investigated anticonvulsant activity of 2-amino-6-nitrobenzothiazole derived semicarbazones (7-32) in various in-vivo animal seizure models viz. maximal electroshock (MES), subcutaneous pentylenetetrazole (scPTZ) and 6Hz psychomotor seizure model. Neurotoxicity was estimated by rotarod test. The compounds were also assessed for their neuroprotective potential from excitotoxic insult using organotypic hippocampal slice culture neuroprotection assay. Several compounds exhibited excellent anticonvulsant activity in MES and scPTZ models compared to reference drugs, phenytoin and levetiracetam. The results of kainic acid (KA) - induced neuroprotection assay indicated that compounds 26 and 24 were found to be most potent with IC50 of 99.54±1.27 and 101.00±1.20μM respectively. Both the compounds attenuated KA-mediated cell death in organotypic hippocampal slice cultures. Some of the compounds were found to be good antidepressants, better than the reference drug citalopram, when analyzed in forced swim test. Since semicarbazones exhibited profile resembling phenytoin, an attempt was made to screen them against human neuronal sodium channel isoform (hNav1.2) by performing computational molecular docking using AutoDock 4.2. Compound 30, 1-(5-Chloro-2-oxoindolin-3-ylidene)-4-(6-nitrobenzothiazol-2-yl)semicarbazide emerged as lead candidate possessing excellent in-vivo MES activity and high binding affinity computationally, better than the reference drug phenytoin and also exhibited neuroprotection from excitotoxic insult in KA-induced neuroprotection assay (IC50=126.80±1.24μM). However, some of the active compounds were neurotoxic at their anticonvulsant doses. Further optimization studies are needed to reduce toxicity and develop them as novel therapeutic agents for epilepsy.
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Affiliation(s)
- Rati Kailash Prasad Tripathi
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, Uttar Pradesh, India.
| | - Senthil Raja Ayyannan
- Pharmaceutical Chemistry Research Laboratory, Department of Pharmaceutical Engineering & Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi - 221005, Uttar Pradesh, India.
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Qureshi IH, Riaz A, Khan RA, Siddiqui AA. Synergistic anticonvulsant effects of pregabalin and amlodipine on acute seizure model of epilepsy in mice. Metab Brain Dis 2017; 32:1051-1060. [PMID: 28281034 DOI: 10.1007/s11011-017-9979-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Accepted: 02/17/2017] [Indexed: 11/26/2022]
Abstract
Status epilepticus is a life threatening neurological medical emergency. It may cause serious damage to the brain and even death in many cases if not treated properly. There is limited choice of drugs for the short term and long term management of status epilepticus and the dugs recommended for status epilepticus possess various side effects. The present study was designed to investigate synergistic anticonvulsant effects of pregabalin with amlodipine on acute seizure model of epilepsy in mice. Pentylenetetrazole was used to induce acute seizures which mimic status epilepticus. Pregabalin and amlodipine were used in combination to evaluate synergistic anti-seizure effects on acute seizure model of epilepsy in mice. Diazepam and valproate were used as reference dugs. The acute anti-convulsive activity of pregabalin with amlodipine was evaluated in vivo by the chemical induced seizures and their anti-seizure effects were compared with pentylenetetrazole, reference drugs and to their individual effects. The anti-seizure effects of tested drugs were recorded in seconds on seizure characteristics such as latency of onset of threshold seizures, rearing and fallings and Hind limbs tonic extensions. The seizure protection and mortality to the animals exhibited by the drugs were recorded in percentage. Combination regimen of pregabalin with amlodipine exhibited dose dependent significant synergistic anticonvulsant effects on acute seizures which were superior to their individual effects and equivalent to reference drugs.
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Affiliation(s)
- Itefaq Hussain Qureshi
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Azra Riaz
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
| | - Rafeeq Alam Khan
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan.
| | - Afaq Ahmed Siddiqui
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences, University of Karachi, Karachi, 75270, Pakistan
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Adongo DW, Mante PK, Kukuia KKE, Biney RP, Boakye-Gyasi E, Benneh CK, Ameyaw EO, Woode E. Anticonvulsant activity of Pseudospondias microcarpa (A. Rich) Engl. hydroethanolic leaf extract in mice: The role of excitatory/inhibitory neurotransmission and nitric oxide pathway. JOURNAL OF ETHNOPHARMACOLOGY 2017; 206:78-91. [PMID: 28528187 DOI: 10.1016/j.jep.2017.05.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 05/09/2017] [Accepted: 05/10/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pseudospondias microcarpa (A. Rich) Engl. is a plant used for managing various diseases including central nervous system disorders. AIM OF THE STUDY This study explored the anticonvulsant activity of P. microcarpa hydroethanolic leaf extract (PME) as well as possible mechanism(s) of action in animal models. METHODS Effects of PME was assessed in electroconvulsive (the maximal electroshock and 6-Hz seizures) and chemoconvulsive (pentylenetetrazole-, picrotoxin-, isoniazid-, 4-aminopyridine-, and strychnine-induced seizures) models of epilepsy. In addition, effect of the extract on the nitric oxide pathway and GABAA receptor complex was evaluated. RESULTS The extract (30, 100 and 300mgkg-1, p.o.) significantly delayed the onset as well as decreased the duration and frequency of pentylenetetrazole-, picrotoxin- and strychnine-induced seizures. In addition, PME pre-treatment significantly improved survival in the 4-aminopyridine- and isoniazid-induced seizure tests. Furthermore, the extract protected against 6-Hz psychomotor seizures but had no effect in the maximal electroshock test. The anticonvulsant effect of PME (100mgkg-1, p.o.) was also reversed by pre-treatment with flumazenil, L-arginine or sildenafil. However, L-NAME or methylene blue (MB) augmented its effect. CONCLUSION Results show that PME has anticonvulsant activity and may probably be affecting GABAergic, glycinergic, NMDA, K+ channels and nitric oxide-cGMP pathways to exert its effect.
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Affiliation(s)
- Donatus W Adongo
- Department of Pharmacology, School of Medicine, University of Health and Allied Sciences, Ho, Ghana.
| | - Priscilla K Mante
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Kennedy K E Kukuia
- Department of Pharmacology and Toxicology, University of Ghana School of Pharmacy, University of Ghana, Accra, Ghana.
| | - Robert P Biney
- Department of Pharmacology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana.
| | - Eric Boakye-Gyasi
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Charles K Benneh
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Elvis O Ameyaw
- Department of Biomedical and Forensic Sciences, School of Biological Science, University of Cape Coast, Cape Coast, Ghana.
| | - Eric Woode
- Department of Pharmacology, Faculty of Pharmacy and Pharmaceutical Sciences, College of Health Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
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Liu XJ, Zhang HJ, Quan ZS. Synthesis and evaluation of the anticonvulsant activities of 2,3-dihydrophthalazine-1,4-dione derivatives. Med Chem Res 2017. [DOI: 10.1007/s00044-017-1896-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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50
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Dong S, Wang T, Wang H, Qian K, Zhang Z, Zuo Y, Luo G, Jin Y, Wang Z. Synthesis and Evaluation of 5-(o-Tolyl)-1H-tetrazole Derivatives as Potent Anticonvulsant Agents. Arch Pharm (Weinheim) 2017; 350. [PMID: 28418160 DOI: 10.1002/ardp.201600389] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Revised: 03/18/2017] [Accepted: 03/27/2017] [Indexed: 11/11/2022]
Abstract
A series of 5-(o-tolyl)-1H-tetrazole derivatives were synthesized and evaluated for their anticonvulsant activities. 1-(2-Methylbenzyl)-5-(o-tolyl)-1H-tetrazole (3h) showed important anticonvulsant activity against the MES-induced seizures, as well as lower neurotoxicity with an ED50 value of 12.7 mg/kg and a TD50 value of over 500 mg/kg after intraperitoneal injection into mice, providing 3h with a high protective index (TD50 /ED50 ) of over 39.4. The achieved results prove that the distinctive compounds could be valuable as a model for future development, adaptation, and investigation to construct more active analogues.
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Affiliation(s)
- Shiyang Dong
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China.,College of Pharmacy, Hubei University of Science and Technology, Xianning, China
| | - Tiantian Wang
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China.,The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Nanchang, China
| | - Huayu Wang
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China
| | - Kun Qian
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China
| | - Zhongli Zhang
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China
| | - Yueming Zuo
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China
| | - Guangming Luo
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China
| | - Yi Jin
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China.,The National Pharmaceutical Engineering Center for Solid Preparation in Chinese Herbal Medicine, Nanchang, China
| | - Zengtao Wang
- College of Pharmacy, JiangXi University of Traditional Chinese Medicine, Nanchang, China
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