H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan.
H.E.J. Research Institute of Chemistry, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan/ Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, Pakistan.
Pak J Pharm Sci. 2020 Jul;33(4):1465-1471.
An imbalance between inhibitory (GABA) and excitatory (Glutamate) neurotransmission contribute to the development of epilepsy. Earlier studies reported that dysregulation of GABA and glutamatergic activities resulted in status epilepticus (SE) and ultimately support the development of temporal lobe epilepsy (TLE), a type of resistant epilepsy. In the earlier work, 2-propanone-1,3,5,5-trimethyl-2-cyclohexen-1-ylidine demonstrated anticonvulsant activity against pentylenetetrazole (PTZ)-induced seizures. Apart from the PTZ-induced TLE, the dysregulation muscaranic receptors and glycine receptors are also widely reported phenomena in the development of temporal lobe epilepsy. Keeping the role of these two receptors in epilepsy, the present work investigated the effect of 2-propanone-1,3,5,5-trimethyl-2-cyclohexen-1-ylidine in pilocarpine-induced and strychnine-induced seizure models. Our results demonstrated that 2-propanone-1,3,5,5-trimethyl-2-cyclohexen-1-ylidine significantly delayed the onset of seizure with maximum protection from SE in pilocarpine-induced seizure model. However, the test compound did not revealed any effect on strychnine-induced seizures in mice. Based on these observations, we suggest that 2-propanone-1,3,5,5-trimethyl-2-cyclohexen-1-ylidine could be a potential candidate in reduction of SE and treatment of temporal lobe epilepsy (TLE) in future.
抑制性(GABA)和兴奋性(谷氨酸)神经递质之间的失衡导致癫痫的发生。早期研究报道,GABA 和谷氨酸能活动的失调导致癫痫持续状态(SE),并最终支持颞叶癫痫(TLE)的发展,TLE 是一种耐药性癫痫。在早期工作中,2-丙酮-1,3,5,5-四甲基-2-环己烯-1-亚基显示出对戊四氮(PTZ)诱导的癫痫发作的抗惊厥活性。除了 PTZ 诱导的 TLE 之外,毒蕈碱受体和甘氨酸受体的失调也广泛报道在颞叶癫痫的发展中。鉴于这两种受体在癫痫中的作用,本工作研究了 2-丙酮-1,3,5,5-四甲基-2-环己烯-1-亚基在匹鲁卡品诱导和士的宁诱导的癫痫模型中的作用。我们的结果表明,2-丙酮-1,3,5,5-四甲基-2-环己烯-1-亚基显著延迟了癫痫发作的发作,并在匹鲁卡品诱导的癫痫发作模型中最大程度地保护了 SE。然而,该测试化合物在小鼠的士的宁诱导的癫痫发作中没有显示出任何作用。基于这些观察结果,我们认为 2-丙酮-1,3,5,5-四甲基-2-环己烯-1-亚基可能是未来减少 SE 和治疗颞叶癫痫(TLE)的潜在候选药物。