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Taleb A, Zhou YP, Meng LT, Zhu MY, Zhang Q, Naveed M, Li LD, Wang P, Zhou QG, Meng F, Han F. New application of an old drug proparacaine in treating epilepsy via liposomal hydrogel formulation. Pharmacol Res 2021; 169:105636. [PMID: 33932606 DOI: 10.1016/j.phrs.2021.105636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/16/2021] [Accepted: 04/20/2021] [Indexed: 01/06/2023]
Abstract
Proparacaine (PPC) is a previously discovered topical anesthetic for ophthalmic optometry and surgery by blocking the central Nav1.3. In this study, we found that proparacaine hydrochloride (PPC-HCl) exerted an acute robust antiepileptic effect in pilocarpine-induced epilepsy mice. More importantly, chronic treatment with PPC-HCl totally terminated spontaneous recurrent seizure occurrence without significant toxicity. Chronic treatment with PPC-HCl did not cause obvious cytotoxicity, neuropsychiatric adverse effects, hepatotoxicity, cardiotoxicity, and even genotoxicity that evaluated by whole genome-scale transcriptomic analyses. Only when in a high dose (50 mg/kg), the QRS interval measured by electrocardiography was slightly prolonged, which was similar to the impact of levetiracetam. Nevertheless, to overcome this potential issue, we adopt a liposome encapsulation strategy that could alleviate cardiotoxicity and prepared a type of hydrogel containing PPC-HCl for sustained release. Implantation of thermosensitive chitosan-based hydrogel containing liposomal PPC-HCl into the subcutaneous tissue exerted immediate and long-lasting remission from spontaneous recurrent seizure in epileptic mice without affecting QRS interval. Therefore, this new liposomal hydrogel formulation of proparacaine could be developed as a transdermal patch for treating epilepsy, avoiding the severe toxicity after chronic treatment with current antiepileptic drugs in clinic.
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Affiliation(s)
- Abdoh Taleb
- Key Lab of Cardiovascular and Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Ya-Ping Zhou
- Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Ling-Tong Meng
- Key Lab of Cardiovascular and Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Ming-Yi Zhu
- Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Qiao Zhang
- Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Muhammad Naveed
- Key Lab of Cardiovascular and Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Lian-Di Li
- Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Peng Wang
- State Key Laboratory of Translational Medicine and Innovative Drug Development, Jiangsu Simcere Pharmaceutical Co., Ltd., Nanjing 210042, China
| | - Qi-Gang Zhou
- Key Lab of Cardiovascular and Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China; Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China; Sir Run Run Hospital, Nanjing Medical University, Nanjing 211166, Jiangsu Province, China.
| | - Fan Meng
- Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China; State Key Laboratory of Translational Medicine and Innovative Drug Development, Jiangsu Simcere Pharmaceutical Co., Ltd., Nanjing 210042, China.
| | - Feng Han
- Key Lab of Cardiovascular and Cerebrovascular Medicine, Drug Target and Drug Discovery Center, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China; Department of Clinical Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.
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