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Peng S, Wu X, Zheng Q, Xu J, Xie D, Zhou M, Wang M, Cheng Y, Ye L, Mo X, Feng Z. Downregulating NHE-1 decreases the apoptosis of hippocampal cells in epileptic model rats based on the NHE-1/ calpain1 pathway. Heliyon 2023; 9:e18336. [PMID: 37539113 PMCID: PMC10395532 DOI: 10.1016/j.heliyon.2023.e18336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 07/08/2023] [Accepted: 07/13/2023] [Indexed: 08/05/2023] Open
Abstract
Seizure is associated with pathological changes of hippocampus, but the mechanism by which hippocampal neuronal apoptosis promotes epilepsy is unclear. Our previous study showed that the expression of NHE-1 was increased in epileptic model rats. Therefore, this study further explores the effect of NHE-1 on hippocampal cells apoptosis and seizure in lithium chloride-pilocarpine epileptic model rats. First, we established a lithium chloride-pilocarpine induced epileptic rat model and detected the expression of NHE-1, calpain1 and apoptosis in the hippocampus. Then, we further down-regulated NHE-1 to observe the expression of calpain1 and apoptosis in the hippocampus, as well as its effect on seizures in rats. We found that the expression of NHE-1 and calpain1 and apoptosis in the hippocampus was significant increased in the model group. After down-regulating NHE-1, the expression of calpain1 was decreased, and hippocampal cell apoptosis was alleviated. In addition, down-regulation of NHE-1 reduced the frequency and duration of seizures in epileptic rats. Therefore, hippocampal NHE-1 overexpression is closely related to the development of neuronal apoptosis in a rat model of epilepsy, and downregulating NHE-1 expression can reduce cell apoptosis. Moreover, the NHE-1/calpain1 signaling pathway may be an important mechanism leading to hippocampal cell apoptosis.
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Affiliation(s)
- Shuang Peng
- Department of Neurology, The Affiliated Hospital of Guizhou Medical University. Guiyang, China
| | - Xuling Wu
- Department of Neurology, The Affiliated Hospital of Guizhou Medical University. Guiyang, China
| | - Qian Zheng
- Department of Neurology, The Affiliated Hospital of Guizhou Medical University. Guiyang, China
| | - Jianwei Xu
- Center for Tissue Engineering and Stem Cell Research, School of Basic Medicine,Guizhou Medical University, Guiyang, China
| | - Dongjun Xie
- Department of Neurology, The Affiliated Hospital of Guizhou Medical University. Guiyang, China
| | - Mengyun Zhou
- Department of Molecular and Cellular Physiology, Shinshu University School of Medicine, Matsumoto, Japan
| | - Mingwei Wang
- Department of Cardiology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Yongran Cheng
- School of Public Health, Hangzhou Medical College, Hangzhou, China
| | - Lan Ye
- The Medical Function Laboratory of Experimental Teaching Center of Basic Medicine, School of Basic Medical Sciences, Guizhou Medical University, Guiyang, China
| | - Xiangang Mo
- Comprehensive Ward, The Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Zhanhui Feng
- Department of Neurology, The Affiliated Hospital of Guizhou Medical University. Guiyang, China
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Wang Q, Liu T, Chang H, Li Z, Chen L, Mi X, Xing H, Wang X, Hong J, Liu K, Li Y, Han D, Li Y, Yang N, Li X, Li Y, Guo X. Low-Intensity Pulsed Ultrasound Attenuates Postoperative Neurocognitive Impairment and Salvages Hippocampal Synaptogenesis in Aged Mice. Brain Sci 2023; 13:brainsci13040657. [PMID: 37190622 DOI: 10.3390/brainsci13040657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/07/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023] Open
Abstract
Postoperative neurocognitive impairment is an urgent problem with global aging accelerating. The prevention and treatment of postoperative neurocognitive impairment have been widely investigated but lack effective strategies. Low-intensity pulsed ultrasound (LIPUS), a non-invasive tool, has shown an effect on neuroprotection, but whether it could attenuate the postoperative neurocognitive impairment and the underlying mechanisms remains unknown. An experimental setup for LIPUS stimulation of the hippocampus was well established. A laparotomy model in aged mice was applied, and a Morris water maze was used to assess cognitive function. RT-qPCR and western blotting were used to detect levels of Piezo1, synapse-associated proteins in the hippocampus, respectively. Immunofluorescent staining was also used to determine the neural activation and Piezo1 expression. The results showed that LIPUS increased synapse-related proteins of the hippocampus and attenuated cognitive impairment in aged mice. Meanwhile, LIPUS suppressed the overexpression of Piezo1 in the hippocampus. We further found that LIPUS promoted Calpain1 activity and increased extracellular regulated protein kinases (Erk) phosphorylation. Our results suggested that LIPUS could improve cognitive impairment and increase hippocampal synaptogenesis through the Piezo1-mediated Calpain1/ Erk pathway. LIPUS could be used as an effective physical intervention to alleviate postoperative cognitive dysfunction in the aged population.
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Affiliation(s)
- Qian Wang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Taotao Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Huixian Chang
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066104, China
| | - Zhengqian Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
- Beijing Center of Quality Control and Improvement on Clinical Anesthesia, Beijing 101300, China
| | - Lei Chen
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Xinning Mi
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Huayi Xing
- Department of Rehabilitation Medicine, Peking University Third Hospital, Beijing 100191, China
| | - Xiaoxiao Wang
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - Jingshu Hong
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Kaixi Liu
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yitong Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Dengyang Han
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Yue Li
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Ning Yang
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
| | - Xiaoli Li
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing 100875, China
| | - Yingwei Li
- School of Information Science and Engineering, Yanshan University, Qinhuangdao 066104, China
| | - Xiangyang Guo
- Department of Anesthesiology, Peking University Third Hospital, Beijing 100191, China
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Lin J, Wang F, Jiang G, Zhang T, Zhang J, He Q, Fan Y. LXR activation ameliorates high glucose stress-induced aberrant mitochondrial dynamics via downregulation of Calpain1 expression in H9c2 cardiomyoblasts. Biochem Biophys Res Commun 2022; 614:145-52. [PMID: 35597151 DOI: 10.1016/j.bbrc.2022.05.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/07/2022] [Accepted: 05/09/2022] [Indexed: 11/22/2022]
Abstract
Liver-X-receptor (LXR) has previously been shown to exert a cardioprotective effect against the development of diabetic cardiomyopathy (DCM) associated with a reduction in mitochondrial dysfunction. However, the underlying mechanism by which LXR activation attenuates the structural and functional mitochondrial impairments caused by high glucose (HG) stress remains unclear. We demonstrate here that LXR activation inhibits HG stress-induced mitochondrial dysfunction and ameliorates aberrant mitochondrial dynamics. Furthermore, LXR activation regulates mitochondrial dynamics by inhibiting HG stress-induced upregulation of Calpain1 expression. These data indicate that amelioration of Calpain1-mediated aberrant mitochondrial dynamics may be at least part of the mechanism underlying the cardioprotective effects of LXR against HG stress. Therefore, LXR is a potentially attractive molecular target for treating cardiac mitochondrial dysfunction in patients with diabetes.
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Miao Z, Miao Z, Teng X, Xu S. Chlorpyrifos triggers epithelioma papulosum cyprini cell pyroptosis via miR-124-3p/CAPN1 axis. J Hazard Mater 2022; 424:127318. [PMID: 34879549 DOI: 10.1016/j.jhazmat.2021.127318] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 09/08/2021] [Accepted: 09/19/2021] [Indexed: 06/13/2023]
Abstract
Chlorpyrifos (CPF), a widely used organophosphorus pesticide has caused water pollution, threatening aquatic organisms. MicroRNAs (miRNAs) highly conserved noncoding RNAs, that regulate various cell death processes, including pyroptosis. To investigate the effect of CPF exposure on epithelioma papulosum cyprini (EPC) cell pyroptosis and the role of the miR-124-3p/CAPN1 axis, we established miR-124 overexpression and inhibition EPC cell models of CPF exposure. The target of the miR-124-3p/CAPN1 axis was primarily confirmed by the double luciferase reporter assay. Pyroptosis was demonstrated to occur in CPF-exposed EPC cells and was accompanied by mitochondrial membrane potential depletion, ROS level elevation and pyroptotic indicator expression upregulation. PD150606 was supplied as a CAPN1 inhibitor, alleviating CPF-induced mitochondrial dysfunction, and alleviating the increased expression of NLRP3, CASP1, IL1β and GSDMD. In conclusion, CPF induces pyroptosis by regulating the miR-124-3p/CAPN1 axis. This study enriches the cytotoxicity study of CPF, and provides new theoretical fundamentals for exploration of miRNA and its target protein response to water contaminants.
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Affiliation(s)
- Zhiying Miao
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Zhiruo Miao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, People's Republic of China
| | - Xiaohua Teng
- College of Animal Science and Technology, Northeast Agricultural University, Harbin 150030, People's Republic of China.
| | - Shiwen Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, People's Republic of China.
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Ling XX, Chen H, Fu BB, Ruan CS, Pana M, Zhou K, Fang ZR, Shao JT, Zhu FQ, Gao S. Xin-Ji-Er-Kang protects myocardial and renal injury in hypertensive heart failure in mice. Phytomedicine 2021; 91:153675. [PMID: 34332285 DOI: 10.1016/j.phymed.2021.153675] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 05/27/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Xin-Ji-Er-Kang (XJEK) as a herbal formula of traditional Chinese medicine (TCM) has shown the protective effects on myocardial function as well as renal function in mouse models of myocardial infarction. HYPOTHESIS/PURPOSE We investigated the effects of XJEK on cardiovascular- and renal-function in a heart failure mouse model induced by high salt (HS) and the associated mechanisms. STUDY DESIGN For the purpose of assessing the effects of XJEK on a hypertensive heart failure model, mice were fed with 8% high salt diet. XJEK was administered by oral gavage for 8 weeks. Cardiovascular function parameters, renal function associated biomarkers and XJEK's impact on renin-angiotensin-aldosterone system (RAAS) activation were assessed. To determine the underlying mechanism, the calpain1/junctophilin-2 (JP2)/sarcoplasmic reticulum Ca2+ ATPase (SERCA2a) pathway was further studied in AC16 cells after angiotensin II-challenge or after calpastatin small interfering RNA (siRNA) transfection. RESULTS Mice on HS-diet exhibited hypertensive heart failure along with progressive kidney injury. Similar to fosinopril, XJEK ameliorated hypertension, cardiovascular-and renal- dysfunction in mice of HS-diet group. XJEK inhibited HS-induced activation of RAAS and reversed the abnormal expression pattern of calpain1and JP2 protein in heart tissues. XJEK significantly improved cell viability of angiotensin II-challenged AC16 cells. Moreover, XJEK's impact on calpain1/JP2 pathway was partly diminished in AC16 cells transfected with calpastatin siRNA. CONCLUSION XJEK was found to exert cardiovascular- and renal protection in HS-diet induced heart failure mouse model. XJEK inhibited HS-diet induced RAAS activation by inhibiting the activity and expression of calpain1 and protected the junctional membrane complex (JMC) in cardiomyocytes.
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Affiliation(s)
- Xin-Xin Ling
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China
| | - Hua Chen
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China
| | - Bei-Bei Fu
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China
| | - Cheng-Shao Ruan
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China
| | - Ming Pana
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China
| | - Kai Zhou
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China
| | - Zhi-Rui Fang
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China
| | - Jun-Tang Shao
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China.
| | - Feng-Qin Zhu
- Hefei Cancer Hospital, Chinese Academy of Science, Hefei 230032, China.
| | - Shan Gao
- Department of Pharmacology, Basic Medical College, Anhui Medical University, Hefei 230032, China.
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Kunkel GH, Kunkel CJ, Ozuna H, Miralda I, Tyagi SC. TFAM overexpression reduces pathological cardiac remodeling. Mol Cell Biochem 2019; 454:139-52. [PMID: 30353496 DOI: 10.1007/s11010-018-3459-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 10/16/2018] [Indexed: 10/28/2022]
Abstract
Heart failure (HF) is a functional lack of myocardial performance due to a loss of molecular control over increases in calcium and ROS, resulting in proteolytic degradative advances and cardiac remodeling. Mitochondria are the molecular powerhouse of cells, shifting the sphere of cardiomyocyte stability and performance. Functional mitochondria rely on the molecular abilities of safety factors such as TFAM to maintain physiological parameters. Mitochondrial transcription factor A (TFAM) creates a mitochondrial nucleoid structure around mtDNA, protecting it from mutation, inhibiting NFAT (ROS activator/hypertrophic stimulator), and transcriptionally activates Serca2a to decrease calcium mishandling. Calpain1 and MMP9 are proteolytic degratory factors that play a major role in cardiomyocyte decline in HF. Current literature depicts major decreases in TFAM as HF progresses. We aim to assess TFAM function against Calpain1 and MMP9 proteolytic activity and its role in cardiac remodeling. To this date, no publication has surfaced describing the effects of aortic banding (AB) as a surgical HF model in TFAM-TG mice. HF models were created via AB in TFAM transgenic (TFAM-TG) and C57BLJ-6 (WT) mice. Eight weeks post AB, functional analysis revealed a successful banding procedure, resulting in cardiac hypertrophy as observed via echocardiography. Pulse wave and color doppler show increased aortic flow rates as well as turbulent flow at the banding site. Preliminary results of cardiac tissue immuno-histochemistry of HF-control mice show decreased TFAM and compensatory increases in Serca2a fluorescent expression, along with increased Calpain1 and MMP9 expression. Protein, RNA, and IHC analysis will further assess TFAM-TG results post-banding. Echocardiography shows more cardiac stability and functionality in HF-induced TFAM-TG mice than the control counterpart. These findings complement our published in vitro results. Overall, this suggests that TFAM has molecular therapeutic potential to reduce protease expression.
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Abstract
Although mitochondrial transcription factor A (TFAM) is a protective component of mitochondrial DNA and a regulator of calcium and reactive oxygen species (ROS) production, the mechanism remains unclear. In heart failure, TFAM is significantly decreased and cardiomyocyte instability ensues. TFAM inhibits nuclear factor of activated T cells (NFAT), which reduces ROS production; additionally, TFAM transcriptionally activates SERCA2a to decrease free calcium. Therefore, decreasing TFAM vastly increases protease expression and hypertrophic factors, leading to cardiomyocyte functional decline. To examine this hypothesis, treatments of 1.0 μg of a TFAM vector and 1.0 μg of a CRISPR-Cas9 TFAM plasmid were administered to HL-1 cardiomyocytes via lipofectamine transfection. Western blotting and confocal microscopy analysis show that CRISPR-Cas9 knockdown of TFAM significantly increased proteases Calpain1, MMP9, and regulators Serca2a, and NFAT4 protein expression. CRISPR knockdown of TFAM in HL-1 cardiomyocytes upregulates degradation factors, leading to cardiomyocyte instability. Hydrogen peroxide oxidative stress decreased TFAM expression and increased Calpain1, MMP9, and NFAT4 protein expression. TFAM overexpression normalizes pathological hypertrophic factor NFAT4 in the presence of oxidative stress.
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Affiliation(s)
- George H Kunkel
- Department of Physiology and Biophysics, University of Louisville, KY, USA.,Department of Physiology and Biophysics, University of Louisville, KY, USA
| | - Pankaj Chaturvedi
- Department of Physiology and Biophysics, University of Louisville, KY, USA.,Department of Physiology and Biophysics, University of Louisville, KY, USA
| | - Nicholas Thelian
- Department of Physiology and Biophysics, University of Louisville, KY, USA.,Department of Physiology and Biophysics, University of Louisville, KY, USA
| | - Rohit Nair
- Department of Physiology and Biophysics, University of Louisville, KY, USA.,Department of Physiology and Biophysics, University of Louisville, KY, USA
| | - Suresh C Tyagi
- Department of Physiology and Biophysics, University of Louisville, KY, USA.,Department of Physiology and Biophysics, University of Louisville, KY, USA
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