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Hua Y, Song M, Guo Q, Luo Y, Deng X, Huang Y. Antiseizure Properties of Histamine H 3 Receptor Antagonists Belonging 3,4-Dihydroquinolin-2(1 H)-Ones. Molecules 2023; 28:molecules28083408. [PMID: 37110645 PMCID: PMC10144301 DOI: 10.3390/molecules28083408] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/10/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
H3R is becoming an attractive and promising target for epilepsy treatment as well as the discovery of antiepileptics. In this work, a series of 6-aminoalkoxy-3,4-dihydroquinolin-2(1H)-ones was prepared to screen their H3R antagonistic activities and antiseizure effects. The majority of the target compounds displayed a potent H3R antagonistic activity. Among them, compounds 2a, 2c, 2h, and 4a showed submicromolar H3R antagonistic activity with an IC50 of 0.52, 0.47, 0.12, and 0.37 μM, respectively. The maximal electroshock seizure (MES) model screened out three compounds (2h, 4a, and 4b) with antiseizure activity. Meanwhile, the pentylenetetrazole (PTZ)-induced seizure test gave a result that no compound can resist the seizures induced by PTZ. Additionally, the anti-MES action of compound 4a fully vanished when it was administrated combined with an H3R agonist (RAMH). These results showed that the antiseizure role of compound 4a might be achieved by antagonizing the H3R receptor. The molecular docking of 2h, 4a, and PIT with the H3R protein predicted their possible binding patterns and gave a presentation that 2h, 4a, and PIT had a similar binding model with H3R.
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Affiliation(s)
- Yi Hua
- Health Science Center, Jinggangshan University, Ji'an 343009, China
| | - Mingxia Song
- Health Science Center, Jinggangshan University, Ji'an 343009, China
| | - Qiaoyue Guo
- Health Science Center, Jinggangshan University, Ji'an 343009, China
| | - Yiqin Luo
- Health Science Center, Jinggangshan University, Ji'an 343009, China
| | - Xianqing Deng
- Health Science Center, Jinggangshan University, Ji'an 343009, China
| | - Yushan Huang
- Center for Evidence Based Medical and Clinical Research, First Affiliated Hospital of Gannan Medical University, Ganzhou 341000, China
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Xiao F, Yan R, Zhang Y, Wang S, Chen S, Zhou N, Deng X. Synthesis and antiseizure effect evaluation of nonimidazole histamine H 3 receptor antagonists containing the oxazole moiety. Arch Pharm (Weinheim) 2020; 354:e2000298. [PMID: 33325568 DOI: 10.1002/ardp.202000298] [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: 08/12/2020] [Revised: 11/12/2020] [Accepted: 11/21/2020] [Indexed: 11/07/2022]
Abstract
The use of histamine H3 receptor (H3 R) antagonists is becoming a promising therapeutic approach for epilepsy. In this paper, a series of novel nonimidazole H3 R antagonists was synthesized and screened as antiepileptic drugs. All of these prepared antagonists displayed micromolar or submicromolar H3 R antagonistic activities in the cAMP response element luciferase screening assay. Compounds 5a (IC50 = 0.11 μM), 5b (IC50 = 0.56 μM), and 5f (IC50 = 0.78 μM) displayed the most potent H3 R antagonistic activities, with considerable potency when compared with pitolisant (IC50 = 0.51 μM). In the maximal electroshock (MES)-induced seizure model, compounds 5c, 5e, and 5g showed obvious protection for the electrostimulated mice, and the protection of 5g against the MES-induced seizures was fully abrogated when mice were cotreated with R-(α)-methyl-histamine, a central nervous system-penetrant H3 R agonist, suggesting that the potential therapeutic effect of 5g was observed to work through H3 R. These results indicate that the attempt to find a new antiepileptic drug among H3 R antagonists is practicable, but it is necessary to consider the log P of the molecules to ensure penetration of the blood-brain barrier.
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Affiliation(s)
- Feng Xiao
- Medical College, Jinggangshan University, Ji'an, Jiangxi, China
| | - Rui Yan
- Medical College, Jinggangshan University, Ji'an, Jiangxi, China
| | - Yanhui Zhang
- Medical College, Jinggangshan University, Ji'an, Jiangxi, China
| | - Shiben Wang
- School of Pharmacy, Liaocheng University, LiaoCheng, Shandong, China
| | - Shilong Chen
- Medical College, Jinggangshan University, Ji'an, Jiangxi, China
| | - Naiming Zhou
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Xianqing Deng
- Medical College, Jinggangshan University, Ji'an, Jiangxi, China
- Research Center of Chinese Medicinal Resources and Functional Molecules, Jinggangshan University, Ji'an, Jiangxi, China
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Jahan K, Pillai KK, Vohora D. DSP-4 induced depletion of brain noradrenaline and increased 6-hertz psychomotor seizure susceptibility in mice is prevented by sodium valproate. Brain Res Bull 2018; 142:263-269. [PMID: 30098387 DOI: 10.1016/j.brainresbull.2018.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 07/25/2018] [Accepted: 08/02/2018] [Indexed: 12/30/2022]
Abstract
The central neurotransmitters assume a noteworthy part in the pathophysiology of epilepsy, noradrenaline is one of them. However, its role in 6 Hz induced psychomotor seizures is not known. The present study was, therefore, designed to investigate the role of noradrenaline (NA) in 6 Hz-induced psychomotor seizures in Swiss albino mice using N-2-Chloroethyl-N-ethyl-2-bromobenzylamine hydrochloride (DSP-4), a well-known depletor of NA. The vehicle and DSP-4 treated mice were given 6 Hz stimulation. A sham treatment was utilized as a comparator and sodium valproate (SVP) was utilized as a reference anti-epileptic medication. Behavioral changes instigated by 6 Hz stimulation were described as the increased duration of Straub's tail, stun position, twitching of vibrissae, forelimb clonus and increased rearing and grooming. DSP-4 administration further amplified the seizures and behavioral changes while pretreatment with SVP reduced the same in mice. Further, SVP pre-treatment also attenuated the ultra-structural changes observed in cortex and hippocampus of mice treated with DSP-4 and 6 Hz. Finally, the neurochemical estimation of NA in cortex and hippocampus confirmed the depletion of NA following DSP-4 and 6 Hz seizures. SVP pretreatment (but not post-treatment) protected the mice from 6 Hz seizures and attenuated the DSP-4 induced alterations of nor-adrenaline content in the mouse brain. The study indicates low brain NA content to enhance pharmacoresistant seizures in mice and demonstrates that SVP mediated protection against 6 Hz results possibly via modulation of NA content.
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Affiliation(s)
- Kausar Jahan
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Krishna K Pillai
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India
| | - Divya Vohora
- Department of Pharmacology, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India.
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Sadek B, Kuder K, Subramanian D, Shafiullah M, Stark H, Łażewska D, Adem A, Kieć-Kononowicz K. Anticonvulsive effect of nonimidazole histamine H3 receptor antagonists. Behav Pharmacol 2014; 25:245-52. [DOI: 10.1097/fbp.0000000000000042] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Berlin M, Boyce CW, de Lera Ruiz M. Histamine H3 Receptor as a Drug Discovery Target. J Med Chem 2010; 54:26-53. [DOI: 10.1021/jm100064d] [Citation(s) in RCA: 117] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Michael Berlin
- Chemical Research, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Christopher W. Boyce
- Chemical Research, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
| | - Manuel de Lera Ruiz
- Chemical Research, Merck Research Laboratories, 2015 Galloping Hill Road, Kenilworth, New Jersey 07033, United States
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Uma Devi P, Manocha A, Khanam R, Vohora D. Beneficial interaction between clobenpropit and pyridoxine in prevention of electroshock-induced seizures in mice: lack of histaminergic mechanisms. Hum Exp Toxicol 2010; 30:84-8. [PMID: 20511290 DOI: 10.1177/0960327110372398] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Clobenpropit, an H( 3) receptor antagonist, has been reported to modulate both the release of neurotransmitters and also the activity of histidine decarboxylase (HDC). Therefore, a decarboxylase-positive modulator, namely pyridoxine, was taken for interaction studies with clobenpropit in the electroshock (ES) model of seizures in mice and subsequent changes in brain histamine levels were estimated. A significant inhibition of ES-induced seizures was seen after the simultaneous use of clobenpropit and pyridoxine. No significant effects were evident on the brain histamine levels following this combination. The combination of clobenpropit with pyridoxine appears to exhibit beneficial pharmacodynamic interaction for the prevention of ES-induced seizures, which might not be mediated by the histaminergic mechanisms.
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Affiliation(s)
- P Uma Devi
- Department of Pharmacology, Faculty of Pharmacy, Jamia Hamdard, New Delhi, India
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Akhtar M, Uma Devi P, Ali A, Pillai KK, Vohora D. Antipsychotic-like profile of thioperamide, a selective H3-receptor antagonist in mice. Fundam Clin Pharmacol 2006; 20:373-8. [PMID: 16867021 DOI: 10.1111/j.1472-8206.2006.00411.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Experimental and clinical evidence points to a role of central histaminergic system in the pathogenesis of schizophrenia. The present study was designed to study the effect of histamine H(3)-receptor ligands on neuroleptic-induced catalepsy, apomorphine-induced climbing behavior and amphetamine-induced locomotor activities in mice. Catalepsy was induced by haloperidol (2 mg/kg p.o.), while apomorphine (1.5 mg/kg s.c.) and amphetamine (2 mg/kg s.c.) were used for studying climbing behavior and locomotor activities, respectively. (R)-alpha-methylhistamine (RAMH) (5 microg i.c.v.) and thioperamide (THP) (15 mg/kg i.p.), per se did not cause catalepsy. Administration of THP (3.75, 7.5 and 15 mg/kg i.p.) 1 h prior to haloperidol resulted in a dose-dependent increase in the catalepsy times (P < 0.05). However, pretreatment with RAMH significantly reversed such an effect of THP (15 mg/kg i.p.). RAMH per se showed significant reduction in locomotor time, distance traveled and average speed but THP (15 mg/kg i.p.) per se had no effect on these parameters. On amphetamine-induced hyperactivity, THP (3.75 and 7.5 mg/kg i.p.) reduced locomotor time, distance traveled and average speed (P < 0.05). Pretreatment with RAMH (5 microg i.c.v.) could partially reverse such effects of THP (3.75 mg/kg i.p.). Climbing behavior induced by apomorphine was reduced in animals treated with THP. Such an effect was, however, reversed in presence of RAMH. THP exhibited an antipsychotic-like profile by potentiating haloperidol-induced catalepsy, reducing amphetamine-induced hyperactivity and reducing apomorphine-induced climbing in mice. Such effects of THP were reversed by RAMH indicating the involvement of histamine H(3)-receptors. Findings suggest a potential for H(3)-receptor antagonists in improving the refractory cases of schizophrenia.
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Affiliation(s)
- Mohd Akhtar
- Department of Pharmacology, Faculty of Pharmacy, Jamia Hamdard, Hamdard University, New Delhi, India
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Akhtar M, Pillai KK, Vohora D. Effect of thioperamide on modified forced swimming test-induced oxidative stress in mice. Basic Clin Pharmacol Toxicol 2006; 97:218-21. [PMID: 16176556 DOI: 10.1111/j.1742-7843.2005.pto_140.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study was designed i) to investigate the role of histamine H3-receptor ligands on mouse modified forced swimming test, a method that distinguishes the catecholaminergic behaviour with that of serotonergic compounds and ii) to evaluate the role of free radicals in mediation of such effects. Swiss strain albino mice were treated with different doses of histamine H3-receptor antagonist thioperamide (3.75, 7.5 and 15 mg/kg intraperitoneally) and agonist (R)-alpha-methylhistamine (5 microg intracerebroventricularly). The climbing, swimming and immobility times were recorded for 6 min. Immediately after modified forced swimming test, the animals were sacrificed and parameters of oxidative stress were assessed in the brain by measuring the thiobarbituric acid reactive substance (TBARS), glutathione (GSH) and catalase levels. Thioperamide (7.5 and 15 mg/kg intraperitoneally) dose-dependently decreased immobility time and increased swimming time but not climbing time. The behaviour of mice treated with (R)-alpha-methylhistamine was similar to that of control mice. A significant reduction in GSH and an increase in catalase levels were observed in brains of mice exposed to modified forced swimming test. Thioperamide pretreatment dose-dependently reversed such an alteration in oxidative stress parameters. (R)-alpha-methylhistamine caused a reversal of altered catalase but not GSH levels. Thioperamide shows antidepressant effects in the modified forced swimming test and causes a reversal of the test-induced oxidative stress indicating its antioxidant potential. The antidepressant effect of thioperamide appears to be mediated via serotonergic and/or antioxidant mechanisms.
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Affiliation(s)
- Mohd Akhtar
- Department of Pharmacology, Faculty of Pharmacy, Hamdard University, New Delhi 110062, India
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