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Zulfat M, Hakami MA, Hazazi A, Mahmood A, Khalid A, Alqurashi RS, Abdalla AN, Hu J, Wadood A, Huang X. Identification of novel NLRP3 inhibitors as therapeutic options for epilepsy by machine learning-based virtual screening, molecular docking and biomolecular simulation studies. Heliyon 2024; 10:e34410. [PMID: 39170440 PMCID: PMC11336274 DOI: 10.1016/j.heliyon.2024.e34410] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 07/06/2024] [Accepted: 07/09/2024] [Indexed: 08/23/2024] Open
Abstract
The NOD-Like Receptor Protein-3 (NLRP3) inflammasome is a key therapeutic target for the treatment of epilepsy and has been reported to regulate inflammation in several neurological diseases. In this study, a machine learning-based virtual screening strategy has investigated candidate active compounds that inhibit the NLRP3 inflammasome. As machine learning-based virtual screening has the potential to accurately predict protein-ligand binding and reduce false positives outcomes compared to traditional virtual screening. Briefly, classification models were created using Support Vector Machine (SVM), Random Forest (RF), and K-Nearest Neighbor (KNN) machine learning methods. To determine the most crucial features of a molecule's activity, feature selection was carried out. By utilizing 10-fold cross-validation, the created models were analyzed. Among the generated models, the RF model obtained the best results as compared to others. Therefore, the RF model was used as a screening tool against the large chemical databases. Molecular operating environment (MOE) and PyRx software's were applied for molecular docking. Also, using the Amber Tools program, molecular dynamics (MD) simulation of potent inhibitors was carried out. The results showed that the KNN, SVM, and RF accuracy was 0.911 %, 0.906 %, and 0.946 %, respectively. Moreover, the model has shown sensitivity of 0.82 %, 0.78 %, and 0.86 % and specificity of 0.95 %, 0.96 %, and 0.98 % respectively. By applying the model to the ZINC and South African databases, we identified 98 and 39 compounds, respectively, potentially possessing anti-NLRP3 activity. Also, a molecular docking analysis produced ten ZINC and seven South African compounds that has comparable binding affinities to the reference drug. Moreover, MD analysis of the two complexes revealed that the two compounds (ZINC000009601348 and SANC00225) form stable complexes with varying amounts of binding energy. The in-silico studies indicate that both compounds most likely display their inhibitory effect by inhibiting the NLRP3 protein.
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Affiliation(s)
- Maryam Zulfat
- Department of Biochemistry, Computational Medicinal Chemistry Laboratory, Abdul Wali Khan University, Mardan, Pakistan
| | - Mohammed Ageeli Hakami
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Shaqra University, Al-Quwayiyah-19257, Riyadh, Saudi Arabia
| | - Ali Hazazi
- Department of Pathology and Laboratory Medicine, Security Forces Hospital Program, Riyadh, Saudi Arabia
- College of Medicine, Alfaisal University, Riyadh, Saudi Arabia
| | - Arif Mahmood
- Department of Biochemistry, Quaid-i-Azam University Islamabad, Pakistan
| | - Asaad Khalid
- Substance Abuse and Toxicology Research Center, Jazan University, P.O. Box: 114, Jazan 45142, Saudi Arabia
| | - Roaya S. Alqurashi
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Ashraf N. Abdalla
- Department of Pharmacology and Toxicology, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia
| | - Junjian Hu
- Department of Central Laboratory, SSL, Central Hospital of Dongguan City, Affiliated Dongguan Shilong People's Hospital of Guangdong Medical University, Dongguan, China
| | - Abdul Wadood
- Department of Biochemistry, Computational Medicinal Chemistry Laboratory, Abdul Wali Khan University, Mardan, Pakistan
| | - Xiaoyun Huang
- Department of Neurology, Houjie Hospital and Clinical College of Guangdong Medical University, Dongguan, China
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Zhao J, Wang J, Zhao K, Yang S, Dong J, Zhang Y, Wu S, Xiang L, Hu W. Palmatine Ameliorates Motor Deficits and Dopaminergic Neuron Loss by Regulating NLRP3 Inflammasome through Mitophagy in Parkinson's Disease Model Mice. Mol Neurobiol 2024:10.1007/s12035-024-04367-2. [PMID: 39096445 DOI: 10.1007/s12035-024-04367-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Accepted: 07/15/2024] [Indexed: 08/05/2024]
Abstract
NLRP3 inflammasomes-mediated proinflammatory response and mitochondrial dysfunction play a critical role in the etiology and pathogenesis of Parkinson's disease. Negative regulation of NLRP3 inflammasome activation through mitophagy may be an important strategy to control NLRP3 inflammasome-mediated proinflammatory responses. Palmatine (PAL), an isoquinoline alkaloid found in various of plants, has potent pharmacological effects such as anti-inflammatory and anti-oxidation. However, the specific role of PAL in the pathology of Parkinson's disease remains unclear. In this study, we found that treatment with PAL improved motor deficits and reduced the loss of dopaminergic neurons in MPTP mice. Further results showed that PAL promoted mitophagy and inhibited the proinflammatory response mediated by NLRP3 inflammasomes. In addition, chloroquine (CQ, mitophagy inhibitor) attenuated the ameliorative effects of PAL on the motor deficits and dopaminergic neuron damage, as well as the inhibitory effect of PAL on NLRP3 inflammasome. Collectively, these results provide strong evidence that PAL ameliorates motor deficits and dopaminergic neuron death in Parkinson's disease, and the mechanism may be related to its inhibition of NLRP3 inflammasome activation via promoting mitophagy.
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Grants
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 81960666, W. Y. H. the Fund of the National Natural Science Program of China
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202101AY070001-009, W. Y. H. the Joint Program of Yunnan Province and Kunming Medical University
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
- 202105AC160078, W. Y. H. Yunnan Province Young Academic and Technical Leaders Project
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Affiliation(s)
- Jindong Zhao
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China
| | - Ji Wang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- School of Chinese Materia Medica &Yunnan Key Laboratory of Southern Medicine Utilization, Yunnan University of Chinese Medicine, Kunming, 650500, PR China
| | - Kunying Zhao
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China
| | - Shuda Yang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China
| | - Junfang Dong
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China
| | - Yuxiao Zhang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China
| | - Shangpeng Wu
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China
| | - Lirong Xiang
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China
| | - Weiyan Hu
- School of Pharmaceutical Science & Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, 650500, PR China.
- College of Modern Biomedical Industry, Kunming Medical University, Kunming, 650500, PR China.
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Moradipoor F, Jivad N, Asgharzadeh S, Zare E, Amini-Khoei H. Neuroimmune response and oxidative stress in the prefrontal cortex mediate seizure susceptibility in experimental colitis in male mice. J Biochem Mol Toxicol 2024; 38:e23755. [PMID: 38923727 DOI: 10.1002/jbt.23755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 05/18/2024] [Accepted: 06/18/2024] [Indexed: 06/28/2024]
Abstract
Inflammatory bowel disease (IBD) is a chronic gastrointestinal disorder. Oxidative stress and inflammatory responses have a vital role in the pathophysiology of IBD as well as seizure. IBD is associated with extraintestinal manifestations. This study aimed to explore the relationship between colitis and susceptibility to seizures, with a focus on the roles of neuroinflammation and oxidative stress in acetic acid-induced colitis in mice. Forty male Naval Medical Research Institute mice were divided into four groups: control, colitis, pentylenetetrazole (PTZ), and colitis + PTZ. Colitis was induced by intrarectal administration of acetic acid, and seizures were induced by intravenous injection of PTZ 7 days postcolitis induction. Following the measurement of latency to seizure, the mice were killed, and their colons and prefrontal cortex (PFC) were dissected. Gene expression of inflammatory markers including interleukin-1β, tumor necrosis factor-alpha, NOD-like receptor protein 3, and toll-like receptor 4, as well as total antioxidant capacity (TAC), malondialdehyde (MDA), and nitrite levels were measured in the colon and PFC. Histopathological evaluations were performed on the colon samples. Data were analyzed by t-test or one-way variance analysis. Colitis decreased latency to seizure, increased gene expression of inflammatory markers, and altered levels of MDA, nitrite, and TAC in both the colon and PFC. Simultaneous induction of colitis and seizure exacerbated the neuroimmune response and oxidative stress in the PFC and colon. Results concluded that neuroinflammation and oxidative stress in the PFC at least partially mediate the comorbid decrease in seizure latency in mice with colitis.
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Affiliation(s)
- Fahimeh Moradipoor
- Student Research Committee, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Nahid Jivad
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Samira Asgharzadeh
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Ehsan Zare
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hossein Amini-Khoei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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张 玮, 邓 蒙, 曾 尧, 刘 辰, 尚 菲, 许 文, 蒋 昊, 王 凤, 杨 燕. [2, 6-dimethoxy-1, 4-benzoquinone alleviates septic shock in mice by inhibiting NLRP3 inflammasome activation]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2024; 44:1024-1032. [PMID: 38977331 PMCID: PMC11237302 DOI: 10.12122/j.issn.1673-4254.2024.06.02] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/25/2024] [Indexed: 07/10/2024]
Abstract
OBJECTIVE To investigate the mechanism of 2, 6-dimethoxy-1, 4-benzoquinone (DMQ), an active ingredients in fermented wheat germ extract, for inhibiting NLRP3 inflammasome activation and alleviating septic shock in mice. METHODS Cultured murine bone marrow-derived macrophages (BMDM) stimulated with lipopolysaccharide (LPS) were treated with DMQ, followed by treatment with Nigericin, ATP, and MSU for activating the canonical NLRP3 inflammasome; the noncanonical NLRP3 inflammasome was activated by intracellular transfection of LPS, and AIM2 inflammasome was activated using Poly A: T.In human monocytic THP-1 cells, the effect of Nigericin on inflammasome activation products was examined using Western blotting and ELISA.Co-immunoprecipitation was performed to explore the mechanism of DMQ-induced blocking of NLRP3 inflammasome activation.In a male C57BL/6J mouse model of LPS-induced septic shock treated with 20 and 40 mg/kg DMQ, the levels of IL-1β and TNF-α in the serum and peritoneal lavage fluid were determined using ELISA, and the survival time of the mice within 36 h was observed. RESULTS Treatment with DMQ effectively inhibited LPS-induced activation of canonical NLRP3 inflammasome in mouse BMDM and human THP-1 cells and also inhibited non-canonical NLRP3 inflammasome activation in mouse BMDM, but produced no significant effect on AIM2 inflammasome activation.DMQ significantly blocked the binding between ASC and NLRP3.In the mouse models of septic shock, DMQ treatment significantly reduced the levels of IL-1β in the serum and peritoneal fluid and obviously prolonged survival time of the mice. CONCLUSION DMQ can effectively block ASC-NLRP3 interaction to inhibit NLRP3 inflammasome activation and alleviate LPSinduced septic shock in mice.
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Zhao T, Zhang X, Cui X, Su S, Li L, Chen Y, Wang N, Sun L, Zhao J, Zhang J, Han X, Cao J. Oridonin exerts anticonvulsant profile and neuroprotective activity in epileptic mice by inhibiting NLRP3-mediated pyroptosis. Int Immunopharmacol 2024; 134:112247. [PMID: 38759374 DOI: 10.1016/j.intimp.2024.112247] [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: 12/28/2023] [Revised: 04/17/2024] [Accepted: 05/08/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND Epilepsy is a chronic disabling disease poorly controlled by available antiseizure medications. Oridonin, a bioactive alkaloid with anti-inflammatory properties and neuroprotective effects, can inhibit the increased excitability of neurons caused by glutamate accumulation at the cellular level. However, whether oridonin affects neuronal excitability and whether it has antiepileptic potential has not been reported in animal models or clinical studies. METHOD Pentylenetetrazol was injected into mice to create a model of chronic epilepsy. Seizure severity was assessed using the Racine scale, and the duration and latency of seizures were observed. Abnormal neuronal discharge was detected using electroencephalography, and neuronal excitability was assessed using calcium imaging. Damage to hippocampal neurons was evaluated using Hematoxylin-Eosin and Nissl staining. The expression of the NOD-like receptor thermal protein domain associated protein 3 (NLRP3) inflammasome and other pyroptosis-related proteins was determined using western blotting and immunofluorescence. A neuronal pyroptosis model was established using the supernatant of BV2 cells treated with lipopolysaccharide and adenosine triphosphate to stimulate hippocampal neurons. RESULTS Oridonin (1 and 5 mg/kg) reduced neuronal damage, increased the latency of seizures, and shortened the duration of fully kindled seizures in chronic epilepsy model mice. Oridonin decreased abnormal discharge during epileptic episodes and suppressed increased neuronal excitability. In vitro experiments showed that oridonin alleviated pyroptosis in hippocampal HT22 neurons. CONCLUSION Oridonin exerts neuroprotective effects by inhibiting pyroptosis through the NLRP3/caspase-1 pathway in chronic epilepsy model mice. It also reduces pyroptosis in hippocampal neurons in vitro, suggesting its potential as a therapy for epilepsy.
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Affiliation(s)
- Ting Zhao
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Xuefei Zhang
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Xiaoxiao Cui
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Songxue Su
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Lei Li
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Yanan Chen
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Na Wang
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Lei Sun
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Jianyuan Zhao
- Institute for Developmental and Regenerative Cardiovascular Medicine, MOE-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China.
| | - Jiewen Zhang
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China.
| | - Xiong Han
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China.
| | - Jing Cao
- Department of Neurology and Basic Medicine, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou, Henan 450000, China.
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Abdel-Hamed AR, Wahba AS, Khodeer DM, Abdel-Kader MS, Badr JM, Mahgoub S, Hal DM. Metabolomic Profiling and In Vivo Antiepileptic Effect of Zygophyllum album Aerial Parts and Roots Crude Extracts against Pentylenetetrazole-Induced Kindling in Mice. Metabolites 2024; 14:316. [PMID: 38921451 PMCID: PMC11205424 DOI: 10.3390/metabo14060316] [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: 04/02/2024] [Revised: 05/21/2024] [Accepted: 05/27/2024] [Indexed: 06/27/2024] Open
Abstract
The chemical profiles of both Zygophyllum album (Z. album) aerial parts and roots extracts were evaluated with LC-ESI-TOF-MS/MS analysis. Twenty-four compounds were detected. Among them, some are detected in both the aerial parts and the roots extracts, and others were detected in the aerial parts only. The detected compounds were mainly flavonoids, phenolic compounds, triterpenes and other miscellaneous compounds. Such compounds contribute to the diverse pharmacological activities elicited by the Z. album species. This study aimed to elucidate the antiepileptic effect of Z. album aerial parts and roots crude extracts against pentylenetetrazole (PTZ)-induced kindling in mice. Male albino mice were divided into four groups, eight animals each. All groups, except the control group, were kindled with PTZ (35 mg/kg i.p.), once every alternate day for a total of 15 injections. One group was left untreated (PTZ group). The remaining two groups were treated prior to PTZ injection with either Z. album aerial parts or roots crude extract (400 mg/kg, orally). Pretreatment with either extract significantly reduced the seizure scores, partially reversed the histological changes in the cerebral cortex and exerted antioxidant/anti-inflammatory efficacy evinced by elevated hippocampal total antioxidant capacity and SOD and catalase activities, parallel to the decrement in MDA content, iNOS activity and the TXNIB/NLRP3 axis with a subsequent decrease in caspase 1 activation and a release of IL-1β and IL-18. Moreover, both Z. album extracts suppressed neuronal apoptosis via upregulating Bcl-2 expression and downregulating that of Bax, indicating their neuroprotective and antiepileptic potential. Importantly, the aerial parts extract elicited much more antiepileptic potential than the roots extract did.
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Affiliation(s)
- Asmaa R. Abdel-Hamed
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; (A.R.A.-H.); (A.S.W.)
| | - Alaa S. Wahba
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; (A.R.A.-H.); (A.S.W.)
| | - Dina M. Khodeer
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt;
| | - Maged S. Abdel-Kader
- Department of Pharmacognosy, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University, Alexandria 21215, Egypt
| | - Jihan M. Badr
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; (J.M.B.); (D.M.H.)
| | - Sebaey Mahgoub
- Food Analysis Laboratory, Ministry of Health, Zagazig 44511, Egypt;
| | - Dina M. Hal
- Department of Pharmacognosy, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; (J.M.B.); (D.M.H.)
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Cheng Y, Zhang Y, Huang P, Cheng Q, Ding H. Luteolin ameliorates pentetrazole-induced seizures through the inhibition of the TLR4/NF-κB signaling pathway. Epilepsy Res 2024; 201:107321. [PMID: 38382229 DOI: 10.1016/j.eplepsyres.2024.107321] [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: 07/25/2023] [Revised: 11/21/2023] [Accepted: 02/07/2024] [Indexed: 02/23/2024]
Abstract
Epilepsy represents a prevalent neurological disorder in the population, and the existing antiepileptic drugs (AEDs) often fail to adequately control seizures. Inflammation is recognized as a pivotal factor in the pathophysiology of epilepsy. Luteolin, a natural flavonoid extract, possesses anti-inflammatory properties and exhibits promising neuroprotective activity. Nevertheless, the precise molecular mechanisms underlying the antiepileptic effects of luteolin remain elusive. In this study, we established a rat model of epilepsy using pentylenetetrazole (PTZ) to induce seizures. A series of behavioral experiments were conducted to assess behavioral abilities and cognitive function. Histological techniques, including HE staining, Nissl staining, and TUNEL staining, were employed to assess hippocampal neuronal damage. Additionally, Western blotting, RT-qPCR, and ELISA were utilized to analyze the expression levels of proteins involved in the TLR4/IκBα/NF-κB signaling pathway, transcription levels of apoptotic factors, and levels of inflammatory cytokines, respectively. Luteolin exhibited a dose-dependent reduction in seizure severity, prolonged the latency period of seizures, and shortened seizure duration. Furthermore, luteolin prevented hippocampal neuronal damage in PTZ-induced epileptic rats and partially restored behavioral function and learning and memory abilities. Lastly, PTZ kindling activated the TLR4/IκBα/NF-κB pathway, leading to elevated levels of the cytokines TNF-α, IL-6 and IL-1β, which were attenuated by luteolin. Luteolin exerted anticonvulsant and neuroprotective activities in the PTZ-induced epileptic model. Its mechanism was associated with the inhibition of the TLR4/IκBα/NF-κB pathway, alleviating the immune-inflammatory response in the post-epileptic hippocampus.
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Affiliation(s)
- Yahong Cheng
- College of Medicine and Health Science, Wuhan Polytechnic University, No.68, Xuefu South Road, Wuhan, Hubei 430023, PR China
| | - Yiyuan Zhang
- Wuhan University School of Pharmaceutical Sciences, Wuhan University, No.185 Donghu Road, Wuhan, Hubei 430072, PR China
| | - Puxin Huang
- Wuhan University School of Pharmaceutical Sciences, Wuhan University, No.185 Donghu Road, Wuhan, Hubei 430072, PR China
| | - Qingzhou Cheng
- College of Medicine and Health Science, Wuhan Polytechnic University, No.68, Xuefu South Road, Wuhan, Hubei 430023, PR China.
| | - Hong Ding
- Wuhan University School of Pharmaceutical Sciences, Wuhan University, No.185 Donghu Road, Wuhan, Hubei 430072, PR China.
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