1
|
Pansani AP, Ghazale PP, Dos Santos EG, Dos Santos Borges K, Gomes KP, Lacerda IS, Castro CH, Mendes EP, Dos Santos FCA, Biancardi MF, Nejm MB, Dogini DB, Rabelo LA, Nunes-Souza V, Scorza FA, Colugnati DB. The number and periodicity of seizures induce cardiac remodeling and changes in micro-RNA expression in rats submitted to electric amygdala kindling model of epilepsy. Epilepsy Behav 2021; 116:107784. [PMID: 33548915 DOI: 10.1016/j.yebeh.2021.107784] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 01/03/2021] [Accepted: 01/03/2021] [Indexed: 12/20/2022]
Abstract
Generalized tonic-clonic seizures (GTCS) are the main risk factor for sudden unexpected death in epilepsy (SUDEP). Also, among the several mechanisms underlying SUDEP there is the cardiac dysfunction. So, we aimed to evaluate the impact of the number of seizures on heart function and morphology in rats with epilepsy. Rats were randomized into three groups: Sham (without epilepsy), 5 S, and 10 S groups, referred as rats with epilepsy with a total of 5 or 10 GTCS, respectively. Epilepsy was induced by electrical amygdala kindling. The ventricular function was analyzed by the Langendorff technique and challenged by ischemia/reperfusion protocol. Cardiac fibrosis and hypertrophy were analyzed by histology. We also analyzed cardiac metalloproteinases (MMP2 and MMP9), ERK 1/2 and phosphorylated ERK1/2 (P-ERK) by western blot; microRNA-21 and -320 by RT-PCR; and oxidative stress (TBARS, catalase activity and nitrite) by biochemical analysis. Only the 5S group presented decreased values of ventricular function at before ischemia/reperfusion (baseline): intraventricular systolic pressure, developed intraventricular pressure, positive and negative dP/dt. During ischemia/reperfusion protocol, the variation of the ventricular function did not differ among groups. Both 5S and 10S groups had increased cardiomyocyte hypertrophy and fibrosis compared to Sham, but in the 5S group, these alterations were higher than in the 10S group. The 5S group increased in microRNA-21 and decreased in microRNA-320 expression compared to Sham and the 10S group. The 10S group increased in MMP9 and decreased in P-ERK/ERK expression, and increased in nitrite content compared to both Sham and the 5S group. Therefore, seizures impair cardiac function and morphology, probably through microRNA modulation. The continuation of seizures seems to exert a preconditioning-like stimulus that fails to compensate the cardiac tissue alteration.
Collapse
Affiliation(s)
- Aline Priscila Pansani
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil.
| | - Poliana Peres Ghazale
- Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo, Brazil
| | - Emilly Gomes Dos Santos
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Kiscilla Dos Santos Borges
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Karina Pereira Gomes
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Ismaley Santos Lacerda
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Carlos Henrique Castro
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | - Elizabeth Pereira Mendes
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| | | | | | - Mariana Bocca Nejm
- Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo, Brazil
| | - Danyella Barbosa Dogini
- Department of Medical Genetics and Genomic Medicine, School of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Luiza Antas Rabelo
- Department of Physiology, Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió, Alagoas, Brazil
| | - Valéria Nunes-Souza
- Department of Physiological and Pharmacology Sciences, Institute of Biological Sciences, Federal University of Pernambuco, Recife, Pernambuco, Brazil
| | - Fulvio Alexandre Scorza
- Department of Neurology and Neurosurgery, Federal University of São Paulo, São Paulo, Brazil
| | - Diego Basile Colugnati
- Department of Physiological Sciences, Institute of Biological Sciences, Federal University of Goiás, Goiânia, Brazil
| |
Collapse
|
2
|
Tian ZQ, Jiang H, Lu ZB. MiR-320 regulates cardiomyocyte apoptosis induced by ischemia-reperfusion injury by targeting AKIP1. Cell Mol Biol Lett 2018; 23:41. [PMID: 30181740 PMCID: PMC6114048 DOI: 10.1186/s11658-018-0105-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 08/06/2018] [Indexed: 11/10/2022] Open
Abstract
Background MicroRNAs play important roles in regulation of the cardiovascular system. The purpose of this study was to investigate microRNA-320 (miR-320) expression in myocardial ischemia-reperfusion (I/R) injury and the roles of miR-320 in cardiomyocyte apoptosis by targeting AKIP1 (A kinase interacting protein 1). Methods The level of miR-320 was detected using quantitative real-time polymerase chain reaction (qRT-PCR), and cardiomyocyte apoptosis was detected via terminal dUTP nick end-labeling assay. Cardiomyocyte apoptosis and the mitochondrial membrane potential were evaluated via flow cytometry. Bioinformatics tools were used to identify the target gene of miR-320. The expression levels of AKIP1 mRNA and protein were detected via qRT-PCR and Western blot, respectively. Results Both the level of miR-320 and the rate of cardiomyocyte apoptosis were substantially higher in the I/R group and H9c2 cells subjected to H/R than in the corresponding controls. Overexpression of miR-320 significantly promoted cardiomyocyte apoptosis and increased the loss of the mitochondrial membrane potential, whereas downregulation of miR-320 had an opposite effect. Luciferase reporter assay showed that miR-320 directly targets AKIP1. Moreover, knock down and overexpression of AKIP1 had similar effects on the H9c2 cells subjected to H/R. Conclusions miR-320 plays an important role in regulating cardiomyocyte apoptosis induced by I/R injury by targeting AKIP1 and inducing the mitochondrial apoptotic pathway.
Collapse
Affiliation(s)
- Zhi-Qiang Tian
- 1Department of Cardiology, Inner Mongolia People's Hospital, Hohhot, 010017 People's Republic of China
| | - Hong Jiang
- 2Department of Cardiology, Remin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060 People's Republic of China
| | - Zhi-Bing Lu
- 2Department of Cardiology, Remin Hospital of Wuhan University, 238 Jiefang Road, Wuhan, 430060 People's Republic of China
| |
Collapse
|
3
|
Zhang P, Zhang L, Li Y, Zhu S, Zhao M, Ding S, Li J. Quantitative Proteomic Analysis To Identify Differentially Expressed Proteins in Myocardium of Epilepsy Using iTRAQ Coupled with Nano-LC-MS/MS. J Proteome Res 2017; 17:305-314. [PMID: 29090925 DOI: 10.1021/acs.jproteome.7b00579] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Epilepsy is a difficult-to-manage neurological disease that can result in organ damage, such as cardiac injury, that contributes to sudden unexpected death in epilepsy (SUDEP). Although recurrent seizure-induced cardiac dysregulation has been reported, the underlying molecular mechanisms are unclear. We established an epileptic model with Sprague-Dawley rats by applying isobaric tags for a relative and absolute quantification (iTRAQ)-based proteomics approach to identify differentially expressed proteins in myocardial tissue. A total of seven proteins in the acute epilepsy group and 60 proteins in the chronic epilepsy group were identified as differentially expressed. Bioinformatics analysis suggested that the pathogenesis of cardiac injury in acute and chronic epilepsy may be due to different molecular mechanisms. Three proteins, a receptor for activated protein kinase C1 (RACK1), aldehyde dehydrogenase 6 family member A1 (ALDH6A1), and glycerol uptake/transporter 1 (Hhatl), were identified as playing crucial roles in cardiac injury during epilepsy and were successfully confirmed by Western blot and immunohistochemistry analysis. Our study not only provides a deeper understanding of the pathophysiological mechanisms of myocardial damage in epilepsy, but also suggests some potential novel therapeutic targets for preventing cardiac injury and reducing the incidence of sudden death due to heart failure.
Collapse
Affiliation(s)
| | | | - Yongguo Li
- Chongqing Engineering Research Center for Criminal Investigation Technology, Chongqing 400016, China
| | - Shisheng Zhu
- Faculty of Medical Technology, Chongqing Medical and Pharmaceutical College , Chongqing 401331, China
| | - Minzhu Zhao
- Chongqing Engineering Research Center for Criminal Investigation Technology, Chongqing 400016, China
| | - Shijia Ding
- Chongqing Engineering Research Center for Criminal Investigation Technology, Chongqing 400016, China
| | - Jianbo Li
- Chongqing Engineering Research Center for Criminal Investigation Technology, Chongqing 400016, China
| |
Collapse
|
4
|
Li L, Chen F, Cao YG, Qi HP, Huang W, Wang Y, Jing S, Sun HL. Role of Calcium-Sensing Receptor in Cardiac Injury of Hereditary Epileptic Rats. Pharmacology 2015; 95:10-21. [DOI: 10.1159/000369627] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 11/04/2014] [Indexed: 11/19/2022]
|
5
|
Zhao H, Lin G, Shi M, Gao J, Wang Y, Wang H, Sun H, Cao Y. The mechanism of neurogenic pulmonary edema in epilepsy. J Physiol Sci 2014; 64:65-72. [PMID: 24142459 PMCID: PMC10717646 DOI: 10.1007/s12576-013-0291-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Accepted: 09/13/2013] [Indexed: 10/26/2022]
Abstract
Neurogenic pulmonary edema (NPE) is found in many epilepsy patients at autopsy. It is a life-threatening complication, known for almost 100 years, but its etiopathogenesis is still not completely understood. In this study, we used the tremor rat (TRM: tm/tm) as an animal model of epilepsy to investigate the potential mechanisms of NPE under epileptic conditions. We performed reverse-phase high-pressure liquid chromatography assay, H&E and Masson staining, TUNEL assay, and Western blot experiments to determine the role of seizures in NPE. We found the level of catecholamine was higher in TRM rats. Also the occurrence of alveolar cell apoptosis was increased. Moreover, pulmonary vascular remodeling including the deposition of collagen and medial thickening was also found in TRM rats. Further study showed that cell apoptosis was mediated by increasing Bax, decreasing Bcl-2, and activating caspase-3. In addition, the protein level of phosphorylated ERK (p-ERK) was found to be decreased while phosphorylated JNK and phosphorylated p38 were upregulated in TRM rats. Thus, these findings suggest that pulmonary vascular remodeling and alveolar cell apoptosis might be involved in epilepsy-induced NPE and that the mitogen-activated protein kinase signal pathway was involved.
Collapse
Affiliation(s)
- Hong Zhao
- Department of Respiratory Medicine, The Fifth Clinical College of Harbin Medical University, Daqing, 163316 Heilongjiang China
| | - Guijun Lin
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319 Heilongjiang China
| | - Mumu Shi
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319 Heilongjiang China
| | - Jingquan Gao
- Department of Clinical Nursing, Harbin Medical University-Daqing, Daqing, 163319 Heilongjiang China
| | - Yanming Wang
- Department of College of Pharmacy, Harbin Medical University-Daqing, Daqing, 163319 Heilongjiang China
| | - Hongzhi Wang
- Department of Laboratory Diagnosis, The Fifth Affiliated Hospital of Harbin Medical University, Daqing, 163316 China
| | - Hongli Sun
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319 Heilongjiang China
| | - Yonggang Cao
- Department of Pharmacology, Harbin Medical University-Daqing, Daqing, 163319 Heilongjiang China
| |
Collapse
|