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Ni X, Duan L, Bao Y, Li J, Zhang X, Jia D, Wu N. Circ_005077 accelerates myocardial lipotoxicity induced by high-fat diet via CyPA/p47PHOX mediated ferroptosis. Cardiovasc Diabetol 2024; 23:129. [PMID: 38622592 PMCID: PMC11020354 DOI: 10.1186/s12933-024-02204-3] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 03/14/2024] [Indexed: 04/17/2024] Open
Abstract
The long-term high-fat diet (HFD) can cause myocardial lipotoxicity, which is characterized pathologically by myocardial hypertrophy, fibrosis, and remodeling and clinically by cardiac dysfunction and heart failure in patients with obesity and diabetes. Circular RNAs (circRNAs), a novel class of noncoding RNA characterized by a ring formation through covalent bonds, play a critical role in various cardiovascular diseases. However, few studies have been conducted to investigate the role and mechanism of circRNA in myocardial lipotoxicity. Here, we found that circ_005077, formed by exon 2-4 of Crmp1, was significantly upregulated in the myocardium of an HFD-fed rat. Furthermore, we identified circ_005077 as a novel ferroptosis-related regulator that plays a role in palmitic acid (PA) and HFD-induced myocardial lipotoxicity in vitro and in vivo. Mechanically, circ_005077 interacted with Cyclophilin A (CyPA) and inhibited its degradation via the ubiquitination proteasome system (UBS), thus promoting the interaction between CyPA and p47phox to enhance the activity of nicotinamide adenine dinucleotide phosphate (NADPH) oxidase responsible for ROS generation, subsequently inducing ferroptosis. Therefore, our results provide new insights into the mechanisms of myocardial lipotoxicity, potentially leading to the identification of a novel therapeutic target for the treatment of myocardial lipotoxicity in the future.
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Affiliation(s)
- Xinzhu Ni
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, Liaoning, P.R. China
| | - Lian Duan
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, Liaoning, P.R. China
| | - Yandong Bao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, Liaoning, P.R. China
| | - Jinyang Li
- Department of Geriatric Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China
| | - Xiaowen Zhang
- Medical Research Center, Shengjing Hospital of China Medical University, Shenyang, Liaoning, PR China.
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, Liaoning, P.R. China.
| | - Nan Wu
- Department of Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, PR China.
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Zhu Q, Wang S, Huang X, Zhao C, Wang Y, Li X, Jia D, Ma C. Understanding the pathogenesis of coronary slow flow: Recent advances. Trends Cardiovasc Med 2024; 34:137-144. [PMID: 36516963 DOI: 10.1016/j.tcm.2022.12.001] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/24/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Coronary slow flow is taken to be indicative of delayed filling of terminal vessels of the coronary arteries in the absence of coronary stenosis, as detected using coronary angiography. Patients suffering from coronary slow flow typically experience recurrent chest pain, thereby markedly affecting their quality of life. The etiology and pathogenesis of coronary slow flow, which is gradually attracting clinical attention, have yet to be sufficiently established, although it is currently believed that they may be associated with endothelial dysfunction in the coronary arteries, inflammatory response, abnormalities in microvascular reserve function, subclinical atherosclerosis, blood cell and platelet abnormalities, and genetic factors. In this review, we provide a brief overview of recent progress in research on the pathogenesis of coronary slow flow with a view toward elucidating the possible underlying pathogenesis and identify targets and directions for the treatment of this condition.
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Affiliation(s)
- Qing Zhu
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China; Clinical Medical Research Center of Imaging in Liaoning Province, Shenyang, China
| | - Shitong Wang
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China; Clinical Medical Research Center of Imaging in Liaoning Province, Shenyang, China
| | - Xin Huang
- Department of Radiology, The First Hospital of China Medical University, Shenyang, China
| | - Cuiting Zhao
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China; Clinical Medical Research Center of Imaging in Liaoning Province, Shenyang, China
| | - Yonghuai Wang
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China; Clinical Medical Research Center of Imaging in Liaoning Province, Shenyang, China
| | - Xinxin Li
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China; Clinical Medical Research Center of Imaging in Liaoning Province, Shenyang, China
| | - Dalin Jia
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, China
| | - Chunyan Ma
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China; Clinical Medical Research Center of Imaging in Liaoning Province, Shenyang, China.
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Jia D, Cai J, Yao F, Zhu P, Xu X, Qi Y, Wang H. Effect of Bacillus Subtilis on Immune Function of Hd11 Chicken Macrophages. Braz J Poult Sci 2023. [DOI: 10.1590/1806-9061-2022-1641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Affiliation(s)
- D Jia
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - J Cai
- Yangzhou University, P.R.China
| | - F Yao
- Yangzhou University, P.R.China
| | - P Zhu
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China; Yangzhou University, P.R.China
| | - X Xu
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - Y Qi
- Jiangsu Lihua Animal Husbandry Co., Ltd, P.R.China
| | - H Wang
- Yangzhou University, P.R.China
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Xin X, Duan L, Yang H, Yu H, Bao Y, Jia D, Wu N, Qiao Y. miR-141-3p regulates saturated fatty acid-induced cardiomyocyte apoptosis through Notch1/PTEN/AKT pathway via targeting PSEN1. Environ Toxicol 2022; 37:741-753. [PMID: 34897970 DOI: 10.1002/tox.23439] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 11/30/2021] [Accepted: 12/05/2021] [Indexed: 06/14/2023]
Abstract
It has been reported that miR-141-3p levels are markedly upregulated in the cardiomyocytes of obese rats induced by a high-fat diet. However, the role of miR-141-3p in myocardial lipotoxicity remains elusive. In the present study, the role of miR-141-3p in lipotoxic injury of H9c2 cells induced by palmitic acid (PA) and its possible mechanisms were assessed. The results indicated that miR-141-3p was significantly upregulated in PA-induced cardiomyocytes. miR-141-3p inhibitor enhanced the cell viability, reduced the release of lactate dehydrogenase (LDH), creatine kinase-MB (CK-MB), and troponin I (CTN-I), decreased cell apoptosis rate, and repressed the activation of mitochondrial apoptosis pathway in PA-treated H9c2, whereas treatment with miR-141-3p mimics resulted in the opposite effects. Mechanistically, it was further revealed that miR-141-3p could specifically bind to presenilin 1 (PSEN1) 3'UTR, and upregulating miR-141-3p levels reduced the expression of PSEN1, thereby inhibiting the activation of the Notch1/PTEN/AKT pathway. Additionally, inhibition of Notch1/AKT signaling pathway by its inhibitor could abrogate the effect of miR-141-3p on mitochondrial-mediated apoptosis induced by PA. In conclusion, the present study demonstrates that miR-141-3p regulates saturated fatty acid-induced cardiomyocyte apoptosis through Notch1/PTEN/AKT pathway via targeting PSEN1, which gains a new insight into the mechanisms of myocardial lipotoxic injury.
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Affiliation(s)
- Xin Xin
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Lian Duan
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Huimin Yang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Hang Yu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Yandong Bao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Nan Wu
- The Central Laboratory, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Ying Qiao
- The Central Laboratory, The First Affiliated Hospital of China Medical University, Liaoning, China
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Sun L, Duan L, Jia D. Clinical characteristics of cardiovascular patients with extremely low levels of high-density lipoprotein cholesterol. Lipids Health Dis 2021; 20:149. [PMID: 34717644 PMCID: PMC8556846 DOI: 10.1186/s12944-021-01583-w] [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: 08/17/2021] [Accepted: 10/19/2021] [Indexed: 11/10/2022] Open
Abstract
Background Extremely low levels of high-density lipoprotein cholesterol (HDL-C) are related to high cardiovascular mortality. The underlying mechanism is not well known. This research aims to study the clinical characteristics of cardiovascular patients with extremely low levels of HDL-C. Methods All cardiovascular patients in a single Chinese cardiology center that were admitted from January to December 2019 were reviewed. The clinical characteristics of those with HDL-C<20 mg/dL were investigated. Results A total of 20,655 individuals were enrolled. Of these, 52.17 % were males, and the average age was 58.20 ± 12.98 years old. The prevalence of HDL-C<20 mg/dL was 0.47 % for all patients (N=98) and 1.05 % for inpatients. Of those with HDL-C<20 mg/dL, 88.8 % were inpatients, and 77.6 % were males. Their average age was 60.7 ± 15.1 years. Compared with matched patients with normal HDL-C, systemic inflammation (OR= 5.556, 95% CI 2.798–11.030), hypoalbuminemia (OR=5.714, 95% CI 2.702–12.085), hyperuricemia (OR=5.156, 95% CI 2.560–10.386), low T3 syndrome (OR=4.278, 95% CI 1.627–11.245), anemia (OR=3.577, 95% CI 1.680–7.617), diabetes (OR=3.534, 95% CI 1.693–7.376) and hypertriglyceridemia (OR=2.493, 95% CI 1.264–4.918) were identified as adverse concomitant factors of extremely low HDL-C. HDL-C levels were inversely correlated with the total risk scores in patients with HDL-C<20 mg/dL (r=-0.381, P<0.001) and more significantly correlated in patients with HDL-C<15 mg/dL (r=-0.511, P=0.004). Conclusions Extremely low levels of HDL-C tend to occur more frequently in males, older individuals and inpatients. For cardiovascular patients, extremely low levels of HDL-C are usually due to the presence of multiple adverse factors with relatively severe conditions. This could explain the high cardiovascular mortality of individuals with extremely low levels of HDL-C.
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Affiliation(s)
- Lufan Sun
- Department of Cardiology, The First Hospital of China Medical University, 155 North Nanjing Street, 110001, Shenyang, Liaoning Province, China.
| | - Lian Duan
- Department of Cardiology, The First Hospital of China Medical University, 155 North Nanjing Street, 110001, Shenyang, Liaoning Province, China
| | - Dalin Jia
- Department of Cardiology, The First Hospital of China Medical University, 155 North Nanjing Street, 110001, Shenyang, Liaoning Province, China
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Fu Z, Yang H, Han H, Jia D, Xu L, Su G, Wang Z. Effect of whole-grain rice on pellet quality, geese performance, and economic benefits. J APPL POULTRY RES 2021. [DOI: 10.1016/j.japr.2021.100176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Chen Y, Li S, Zhang Y, Wang M, Li X, Liu S, Xu D, Bao Y, Jia P, Wu N, Lu Y, Jia D. The lncRNA Malat1 regulates microvascular function after myocardial infarction in mice via miR-26b-5p/Mfn1 axis-mediated mitochondrial dynamics. Redox Biol 2021; 41:101910. [PMID: 33667993 PMCID: PMC7937833 DOI: 10.1016/j.redox.2021.101910] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 02/16/2021] [Accepted: 02/17/2021] [Indexed: 02/07/2023] Open
Abstract
RATIONALE Myocardial infarction (MI) is a leading cause of cardiovascular mortality globally. The improvement of microvascular function is critical for cardiac repair after MI. Evidence now points to long non-coding RNAs (lncRNAs) as key regulators of cardiac remodelling processes. The lncRNA Malat1 is involved in the development and progression of multiple cardiac diseases. Studies have shown that Malat1 is closely related to the regulation of endothelial cell regeneration. However, the potential molecular mechanisms of Malat1 in repairing cardiac microvascular dysfunction after MI remain unreported. METHODS AND RESULTS The present study found that Malat1 is upregulated in the border zone of infarction in mouse hearts, as well as in isolated cardiac microvascular endothelial cells (CMECs). Targeted knockdown of Malat1 in endothelial cells exacerbated oxidative stress, attenuated angiogenesis and microvascular perfusion, and as a result decreased cardiac function in MI mice. Further studies showed that silencing Malat1 obviously inhibited CMEC proliferation, migration and tube formation, which was at least in part attributed to disturbed mitochondrial dynamics and activation of the mitochondrial apoptosis pathway. Moreover, bioinformatic analyses, luciferase assays and pull-down assays indicated that Malat1 acted as a competing endogenous RNA (ceRNA) for miR-26b-5p and formed a signalling axis with Mfn1 to regulate mitochondrial dynamics and endothelial functions. Overexpression of Mfn1 markedly reversed the microvascular dysfunction and CMEC injuries that were aggravated by silencing Malat1 via inhibition of excessive mitochondrial fragments and mitochondria-dependent apoptosis. CONCLUSIONS The present study elucidated the functions and mechanisms of Malat1 in cardiac microcirculation repair after MI. The underlying mechanisms of the effects of Malat1 could be attributed to its blocking effects on miR-26b-5p/Mfn1 pathway-mediated mitochondrial dynamics and apoptosis.
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Affiliation(s)
- Yuqiong Chen
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, Heping, Shenyang, Liaoning, 110001, PR China
| | - Su Li
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yan Zhang
- Department of Anesthesiology, Xuzhou Central Hospital, The Affiliated XuZhou Hospital of Nanjing Medical University, No.199 Jiefang South Road, Quanshan District, Xuzhou, Jiangsu, 221009, PR China
| | - Mengshen Wang
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, Shenyang, Liaoning Province, 110001, China
| | - Xinyan Li
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, Shenyang, Liaoning Province, 110001, China
| | - Shuang Liu
- Department of Emergency Medicine, The First Affiliated Hospital of China Medical University, Shenyang, 110001, China
| | - Dengyue Xu
- Department of Cardiovascular Surgery, General Hospital of Northern Theater Command, Shenyang, China; Postgraduate College, China Medical University, Shenyang, China
| | - Yandong Bao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, Heping, Shenyang, Liaoning, 110001, PR China
| | - Pengyu Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, Heping, Shenyang, Liaoning, 110001, PR China
| | - Nan Wu
- The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yao Lu
- Department of Cardiology, Xuzhou Central Hospital, The Affiliated XuZhou Hospital of Nanjing Medical University, No.199 Jiefang South Road, Quanshan District, Xuzhou, Jiangsu, 221009, PR China.
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155 North Nanjing Street, Heping, Shenyang, Liaoning, 110001, PR China.
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Qi B, Zhang X, Yu H, Bao Y, Wu N, Jia D. Brazilin prevents against myocardial ischemia-reperfusion injury through the modulation of Nrf2 via the PKC signaling pathway. Ann Transl Med 2021; 9:312. [PMID: 33708939 PMCID: PMC7944319 DOI: 10.21037/atm-20-4414] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background Brazilin, a major ingredient of Caesalpinia sappan L., possesses multiple pharmaceutical activities, although whether or not brazilin exerts any protective effect on myocardial ischemia-reperfusion injury (MIRI) has not yet been reported. The present study determined the cardioprotective effects of brazilin, and elucidated the role of nuclear factor E2-associated factor 2 (Nrf2) in this process. Methods Following treatment with brazilin, H9c2 cells were subjected to 6 h of hypoxia/3 h of reoxygenation. CCK-8 assay and flow cytometry were employed to detect cell viability and apoptosis, respectively. Furthermore, after brazilin treatment, isolated rat hearts underwent 30 min of ischemia, followed by 90 min of reperfusion. Triphenyltetrazolium chloride (TTC) and terminal deoxynucleotidyl transferase-mediated dUTP-biotin nick end labeling (TUNEL) staining were performed to measure myocardial infarct size and apoptosis, respectively. The changes in the levels of proteins were detected by western blotting. Results Brazilin treatment dose-dependently led to a significant enhancement in cell viability, a reduction in myocardial infarct size, and a decrease in release of creatine kinase-MB (CK-MB) and lactate dehydrogenase (LDH). Moreover, brazilin also remarkably inhibited apoptosis and led to various improvements in cardiac function. Additionally, brazilin treatment caused a marked alleviation of oxidative stress, as evidenced by the fact that brazilin reduced the accumulation of reactive oxygen species (ROS) and malondialdehyde (MDA), while enhancing the activities of superoxide dismutase (SOD) and glutathione peroxidase (GXH-Px). Mechanistically, it was found that brazilin induced Nrf2 nuclear translocation, with a concomitant upregulation of both heme oxygenase-1 (HO-1) and NAD(P)H quinone oxidoreductase (NQO1) expression. Furthermore, the phosphorylation level and transcriptional activity of Nrf2 were enhanced by brazilin, although these enhancements were abrogated by treatment with a protein kinase C (PKC) inhibitor. Finally, it was observed that the protective effects of brazilin could be negated through inhibition of Nrf2, which suggested that the cardioprotection afforded by brazilin was Nrf2-dependent. Conclusions Taken together, our results have demonstrated that brazilin may afford protection against MIRI through the activation of Nrf2 via the PKC signaling pathway. These results may lay the foundation for the further use of brazilin in the prevention of MIRI in clinical practice.
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Affiliation(s)
- Bin Qi
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiaowen Zhang
- Medical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Hang Yu
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Yandong Bao
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Nan Wu
- The Central Laboratory of the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Dalin Jia
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, China
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Dai X, Li X, Guo H, Jia D, Perc M, Manshour P, Wang Z, Boccaletti S. Discontinuous Transitions and Rhythmic States in the D-Dimensional Kuramoto Model Induced by a Positive Feedback with the Global Order Parameter. Phys Rev Lett 2020; 125:194101. [PMID: 33216569 DOI: 10.1103/physrevlett.125.194101] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 08/28/2020] [Accepted: 09/01/2020] [Indexed: 06/11/2023]
Abstract
From fireflies to cardiac cells, synchronization governs important aspects of nature, and the Kuramoto model is the staple for research in this area. We show that generalizing the model to oscillators of dimensions higher than 2 and introducing a positive feedback mechanism between the coupling and the global order parameter leads to a rich and novel scenario: the synchronization transition is explosive at all even dimensions, whilst it is mediated by a time-dependent, rhythmic, state at all odd dimensions. Such a latter circumstance, in particular, differs from all other time-dependent states observed so far in the model. We provide the analytic description of this novel state, which is fully corroborated by numerical calculations. Our results can, therefore, help untangle secrets of observed time-dependent swarming and flocking dynamics that unfold in three dimensions, and where this novel state could thus provide a fresh perspective for as yet not understood formations.
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Affiliation(s)
- X Dai
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
| | - X Li
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Computer Science, Northwestern Polytechnical University, Xian 710072, China
| | - H Guo
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
| | - D Jia
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
| | - M Perc
- Faculty of Natural Sciences and Mathematics, University of Maribor, Koroška cesta 160, 2000 Maribor, Slovenia
- Complexity Science Hub Vienna, Josefstädterstraße 39, 1080 Vienna, Austria
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung 404, Taiwan
| | - P Manshour
- Physics Department, Persian Gulf University, Bushehr 75169, Iran
| | - Z Wang
- Center for OPTical IMagery Analysis and Learning (OPTIMAL), Northwestern Polytechnical University, Xi'an 710072, China
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - S Boccaletti
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
- CNR-Institute of Complex Systems, Via Madonna del Piano 10, I-50019 Sesto Fiorentino, Italy
- Moscow Institute of Physics and Technology (National Research University), 9 Institutskiy per., Dolgoprudny, Moscow Region 141701, Russian Federation
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Wang Y, Yu H, Zhao C, Li G, Yang J, Jia D, Ma C. Usefulness of soluble endothelial protein C receptor combined with left ventricular global longitudinal strain for predicting slow coronary flow: A case-control study. Cardiol J 2020; 29:619-626. [PMID: 32104901 PMCID: PMC9273246 DOI: 10.5603/cj.a2020.0027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 11/19/2019] [Revised: 02/25/2020] [Accepted: 02/17/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Slow coronary flow (SCF) is an angiographic entity characterized by delayed coronary opacification without an evident obstructive lesion in the epicardial coronary artery. However, patients with SCF have decreased left ventricular (LV) global longitudinal strain (GLS). SCF is associated with inflammation, and soluble endothelial protein C receptor (sEPCR) is a potential biomarker of inflammation. Therefore, under evaluation herein, was the relationship between SCF and sEPCR and the predictive value of sEPCR and LV GLS for SCF was investigated. METHODS Twenty-eight patients with SCF and 34 controls were enrolled. SCF was diagnosed by the thrombolysis in myocardial infarction frame count (TFC). The plasma level of sEPCR was quantified using enzyme-linked immunosorbent assay. LV GLS was measured by two-dimensional speckle-tracking echocardiography. RESULTS Plasma sEPCR was significantly higher in patients with SCF than in controls and was positively correlated with the mean TFC (r = 0.67, p < 0.001) and number of involved vessels (r = 0.61, p < 0.001). LV GLS was decreased in patients with SCF compared to that in controls. sEPCR level (OR = 3.14, 95% CI 1.55-6.36, p = 0.001) and LV GLS (OR = 1.44, 95% CI 1.02-2.04, p = 0.04) were independent predictors of SCF. sEPCR predicted SCF (area under curve [AUC]: 0.83); however, sEPCR > 9.63 ng/mL combined with LV GLS > -14.36% demonstrated better predictive power (AUC: 0.89; sensitivity: 75%; specificity: 91%). CONCLUSIONS Patients with SCF have increased plasma sEPCR and decreased LV GLS. sEPCR may be a useful potential biomarker for SCF, and sEPCR combined with LV GLS can better predict SCF.
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Affiliation(s)
- Yonghuai Wang
- First Hospital of China Medical University, No. 155 Nanjingbei Street, 110001 Shenyang, Liaoning, China
| | - Hang Yu
- First Hospital of China Medical University, No. 155 Nanjingbei Street, 110001 Shenyang, Liaoning, China
| | - Cuiting Zhao
- First Hospital of China Medical University, No. 155 Nanjingbei Street, 110001 Shenyang, Liaoning, China
| | - Guangyuan Li
- First Hospital of China Medical University, No. 155 Nanjingbei Street, 110001 Shenyang, Liaoning, China
| | - Jun Yang
- First Hospital of China Medical University, No. 155 Nanjingbei Street, 110001 Shenyang, Liaoning, China
| | - Dalin Jia
- First Hospital of China Medical University, No. 155 Nanjingbei Street, 110001 Shenyang, Liaoning, China
| | - Chunyan Ma
- First Hospital of China Medical University, No. 155 Nanjingbei Street, 110001 Shenyang, Liaoning, China.
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Zhao Y, Guo Y, Chen Y, Liu S, Wu N, Jia D. Curculigoside attenuates myocardial ischemia‑reperfusion injury by inhibiting the opening of the mitochondrial permeability transition pore. Int J Mol Med 2020; 45:1514-1524. [PMID: 32323742 PMCID: PMC7138276 DOI: 10.3892/ijmm.2020.4513] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 02/03/2020] [Indexed: 01/13/2023] Open
Abstract
The aim of the present study was to determine whether curculigoside protects against myocardial ischemia-reperfusion injury (MIRI) and to investigate the underlying mechanisms. An in vitro model of hypoxia/reoxygenation (H/R) was established by culturing H9c2 cells under hypoxic conditions for 12 h, followed by reoxygenation for 1 h. Cell Counting kit-8 and lactate dehydrogenase (LDH) assays were subsequently used to examine cell viability and the degree of cell injury. In addition, isolated rat hearts were subjected to 30 min of ischemia followed by 1 h of reperfusion to establish a MIRI model. Triphenyltetrazolium chloride (TTC) staining was performed to measure the infarct size. Furthermore, TUNEL staining and flow cytometry were employed to evaluate cell apoptosis. The opening of the mitochondrial permeability transition pore (MPTP) and changes in the mitochondrial membrane potential (ΔΨm) were assessed. Reverse transcription-quantitative PCR and western blot analysis were performed to investigate the expression levels of mitochondrial apoptosis-related proteins. Curculigoside pre-treatment significantly improved cell viability, decreased cell apoptosis and LDH activity, and reduced the infarct size and myocardial apoptosis in vitro and ex vivo, respectively. Moreover, curculigoside markedly inhibited MPTP opening and preserved the ΔΨm. In addition, curculigoside significantly decreased the expression of cytochrome c, apoptotic protease activating factor-1, cleaved caspase-9 and cleaved caspase-3. Notably, atractyloside, a known MPTP opener, abrogated the protective effects of curculigoside. On the whole, the present study demonstrated that curculigoside protected against MIRI, potentially by decreasing the levels of mitochondria-mediated apoptosis via the inhibition of MPTP opening. Therefore, the results obtained in the present study may provide the theoretical basis for the future clinical application of curculigoside.
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Affiliation(s)
- Yanbing Zhao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yuxuan Guo
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yuqiong Chen
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Shuang Liu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Wu
- Department of Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Guo Y, Jia P, Chen Y, Yu H, Xin X, Bao Y, Yang H, Wu N, Sun Y, Jia D. PHLDA1 is a new therapeutic target of oxidative stress and ischemia reperfusion-induced myocardial injury. Life Sci 2020; 245:117347. [PMID: 31981628 DOI: 10.1016/j.lfs.2020.117347] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 10/25/2022]
Abstract
AIM Oxidative stress plays an important role in myocardial ischemia-reperfusion injury. Pleckstrin homology-like domain, family A, member 1 (PHLDA1) was first identified in apoptosis induced by T cell receptor activation, and was shown to play a different role in different cell types and under different stimuli. The role and mechanism of PHLDA1 in oxidative stress-induced cardiomyocyte injury and cardiac ischemia-reperfusion were therefore determined. MAIN METHODS Cell viability and apoptotic rate were measured by Cell Counting Kit-8 and flow cytometry, respectively. Mitochondrial membrane potential was measured using JC-1 test kit. Reactive oxygen species (ROS) production was detected using ROS kit. HE staining was used to detect histological morphology, 2,3,5-triphenyltetrazolium chloride staining to detect infarct size, terminal deoxynucleotidyl transferase dUTP nick end labeling staining to detect the apoptotic rate, and immunohistochemistry and western blot analysis to detect protein expression. The binding of PHLDA1 to Bcl-2 associated X (Bax) was detected by immunoprecipitation. KEY FINDINGS The results indicated that PHLDA1 is highly expressed in oxidative stress-induced cardiomyocyte and myocardial ischemia-reperfusion injuries. PHLDA1 overexpression in cardiomyocytes promoted oxidative stress-induced cardiomyocyte injury. At the same time, PHLDA1 knockdown improved oxidative stress-induced cardiomyocyte and myocardial ischemia-reperfusion injuries. In addition, PHLDA1 binds to Bax and the interaction is enhanced under H2O2 stimulation. SIGNIFICANCE The present results indicated that PHLDA1 interacts with Bax to participate in oxidative stress-induced cardiomyocyte injury and myocardial ischemia reperfusion injury.
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Affiliation(s)
- Yuxuan Guo
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Pengyu Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Yuqiong Chen
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Hang Yu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Xin Xin
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Yandong Bao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Huimin Yang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Nan Wu
- Central Laboratory of The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China
| | - Yingxian Sun
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China.
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang 110001, Liaoning, China.
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Han Y, Wu N, Xia F, Liu S, Jia D. Long non‑coding RNA GAS5 regulates myocardial ischemia‑reperfusion injury through the PI3K/AKT apoptosis pathway by sponging miR‑532‑5p. Int J Mol Med 2020; 45:858-872. [PMID: 31985016 PMCID: PMC7015127 DOI: 10.3892/ijmm.2020.4471] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 12/02/2019] [Indexed: 12/12/2022] Open
Abstract
Long non‑coding RNAs (lncRNAs) have been revealed to have a marked effect in cardiovascular diseases, including during cardiac development, cardiac hypertrophy, myocardial fibrosis and myocardial ischemic injury. The mechanism of myocardial ischemia‑reperfusion injury (MIRI) is very complicated. Although studies have confirmed that lncRNAs are involved, the specific mechanism remains largely unknown. The lncRNA growth arrest specific 5 (GAS5) is known as a regulator of a number of diseases, including certain cancer types. The present study aimed to investigate the function of lncRNA GAS5 in MIRI. The present study reported that the expression of lncRNA GAS5 in H9c2 cells treated with anoxia and reoxygenation was significantly upregulated compared with the control group (P<0.05). Similarly, the expression of lncRNA GAS5 in myocardial tissue obtained from rats treated with MIRI was significantly upregulated compared with the untreated controls (P<0.05). Silencing of lncRNA GAS5 was able to attenuate myocardial damage, as cell viability increased and the apoptosis rate decreased. Classical apoptotic proteins involved in MIRI, including B‑cell lymphoma 2, Bcl‑2‑associated X protein and cleaved caspase‑3, also exhibited the same trend. At the same time, when lncRNA GAS5 was silenced, microRNA (miR)‑532‑5p, which was originally expressed at the stage of injury, was upregulated. The luciferase reporter assay results indicated that the lncRNA GAS5 functioned as a molecular sponge of miR‑532‑5p. The gain‑ and loss‑of‑function analysis of miR‑532‑5p indicated that it was involved in the regulation of MIRI; the trend of results following its overexpression was also consistent with the trend observed following the silencing of lncRNA GAS5. Notably, the protective effect of lncRNA GAS5 silencing on cells was attenuated by miR‑532‑5p inhibition. Phosphatase and tensin homolog was revealed to be a key target gene for the function of lncRNA GAS5, and its regulation was achieved via binding to miR‑532‑5p. In other words, silencing lncRNA GAS5 ultimately promoted the activation of the phosphoinositide‑3‑kinase (PI3K)/protein kinase B pathway (AKT) to reduce myocardial damage. Therefore, lncRNA GAS5 was able to regulate MIRI through the PI3K/AKT apoptosis pathway by sponging miR‑532‑5p.
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Affiliation(s)
- Yang Han
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Wu
- The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Fei Xia
- Department of Cardiology, Liaoning Provincial People's Hospital, Shenyang, Liaoning 110000, P.R. China
| | - Shuang Liu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Yang H, Xin X, Yu H, Bao Y, Jia P, Wu N, Jia D. microRNA Expression Profiles in Myocardium of High-Fat Diet-Induced Obesity Rat. Diabetes Metab Syndr Obes 2020; 13:1147-1159. [PMID: 32346302 PMCID: PMC7167270 DOI: 10.2147/dmso.s248948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Accepted: 03/27/2020] [Indexed: 12/15/2022] Open
Abstract
PURPOSE A high-fat diet (HFD) can lead to cardiac dysfunction, hypertrophy, and fibrosis. This study aimed to explore microRNA expression profiles in the myocardium of HFD-induced obesity rat. MATERIALS AND METHODS Wistar rats were randomly divided into two groups, and fed with normal chow diet (NCD) or HFD for 20 weeks. Cardiac function was evaluated by echocardiography. Left ventricular myocardium was harvested to assess the extent of myocardial morphology alteration. MicroRNA expression was analyzed using Agilent miRNA microarray and quantitative real-time PCR (qRT-PCR) was used to validate the microarray data. The mirdbV6 database was used to forecast the miRNA target genes. The role of microRNAs in palmitate-induced cardiac hypertrophy and fibrosis in primary neonatal rat cardiomyocytes was evaluated by loss- and gain-of-function experiments. RESULTS Significant changes in cardiac function, hypertrophy, fibrosis, and apoptosis were found in HFD rats as compared with NCD rats. miR-141-3p and miR-144-3p were also significantly upregulated in the myocardium of HFD-induced obesity rat. A series of genes involved in essential biological processes, including anatomical structure development and metabolic process, was targeted by these two miRNAs. These target genes were also implicated in signaling pathways involved in the PI3K-Akt signaling pathway, Wnt signaling pathway, autophagy, and protein processing in the endoplasmic reticulum. Inhibition of miR-141 or overexpression of miR-144 attenuated palmitate-induced cardiac hypertrophy and fibrosis. In contrast, overexpression of miR-141 or inhibition of miR-144 aggravated palmitate-induced cardiac hypertrophy and fibrosis. CONCLUSION This study identifies that miR-141 and miR-144 are candidate miRNAs associated with the development of HFD-induced cardiac dysfunction and structure alteration.
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Affiliation(s)
- Huimin Yang
- Department of Cardiology, The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Xin Xin
- Department of Cardiology, The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Hang Yu
- Department of Cardiology, The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Yandong Bao
- Department of Cardiology, The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Pengyu Jia
- Department of Cardiology, The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Nan Wu
- Department of Cardiology, The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
| | - Dalin Jia
- Department of Cardiology, The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China
- Correspondence: Dalin Jia; Nan Wu Department of Cardiology The Central Laboratory, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang, Liaoning110001, People’s Republic of China Email ;
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Sun L, Liu X, Li W, Jia D. HDL-C to hsCRP ratio is associated with left ventricular diastolic function in absence of significant coronary atherosclerosis. Lipids Health Dis 2019; 18:219. [PMID: 31831002 PMCID: PMC6909510 DOI: 10.1186/s12944-019-1157-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 07/27/2019] [Accepted: 11/27/2019] [Indexed: 01/10/2023] Open
Abstract
Background High-density lipoprotein cholesterol (HDL-C) is considered as a protective marker of coronary atherosclerotic disease (CAD). It is still not clear if HDL-C is associated with left ventricular (LV) diastolic function in an inflammation-related manner in absence of significant coronary atherosclerosis. Methods 392 patients who complained of chest pain and were suspected of CAD without heart failure were enrolled in this study. Coronary angiography or coronary artery CT scan was performed to detect coronary atherosclerosis. Transthoracic echocardiography was performed to evaluate cardiac function. Plasma level of HDL-C and high-sensitive C-reactive protein (hsCRP) were determined in each subject. Relationship between HDL-C/hsCRP ratio and LV diastolic function in subjects without significant coronary atherosclerosis was investigated. Results 204 subjects without significant coronary plaques were analyzed finally, including 84 males and 120 females whose ages ranged from 30 to 84 years old. When divided into HDL-C/hsCRP quartiles, those in the fourth quartile demonstrated the best diastolic function (E/e’ 10.14 ± 2.87, P = 0.02 ). HDL-C/hsCRP was the most significant factor correlated with E/e’ in univariate regression analysis (r = − 0.232, P < 0.001) and multiple regression analysis adjusted by other factors (standardized β = − 0.258 , P < 0.0005 ). In logistic regression, HDL-C/hsCRP was proved to be a protective factor of LV diastolic dysfunction E/e’ > 14 (OR = 0.649, 95%CI 0.444–0.948,P = 0.025 ). The sensitivity and specificity of using HDL-C/hsCRP < 0.98 to predict LV diastolic dysfunction were 64.3% and 56.2%, respectively. HDL-C/hsCRP ratio presented a reduced trend as increasing rate of CV risk factors. Conclusions HDL-C/hsCRP ratio strongly correlates with LV diastolic function in absence of significant coronary atherosclerosis. Low HDL-C/hsCRP ratio tends to relate with LV diastolic dysfunction.
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Affiliation(s)
- Lufan Sun
- Department of Cardiology, The First Hospital of China Medical University, 155 North Nanjing Street, Shenyang, 110001, China.
| | - Xiaorui Liu
- Department of Cardiology, The First Hospital of China Medical University, 155 North Nanjing Street, Shenyang, 110001, China.,Intensive Care Unit, People's Hospital of Huanren County, Benxi, China
| | - Wenna Li
- Department of Cardiology, The First Hospital of China Medical University, 155 North Nanjing Street, Shenyang, 110001, China
| | - Dalin Jia
- Department of Cardiology, The First Hospital of China Medical University, 155 North Nanjing Street, Shenyang, 110001, China
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Wu N, Zhang X, Bao Y, Yu H, Jia D, Ma C. Down-regulation of GAS5 ameliorates myocardial ischaemia/reperfusion injury via the miR-335/ROCK1/AKT/GSK-3β axis. J Cell Mol Med 2019; 23:8420-8431. [PMID: 31625671 PMCID: PMC6850918 DOI: 10.1111/jcmm.14724] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [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: 05/08/2019] [Revised: 08/19/2019] [Accepted: 08/27/2019] [Indexed: 12/11/2022] Open
Abstract
Growth arrest‐specific transcript 5 (GAS5), along non‐coding RNA (LncRNA), is highly expressed in hypoxia/reoxygenation (H/R)‐cardiomyocytes and promotes H/R‐induced apoptosis. In this study, we determined whether down‐regulation of GAS5 ameliorates myocardial ischaemia/reperfusion (I/R) injury and further explored its mechanism. GAS5 expression in cardiomyocytes and rats was knockdown by transfected or injected with GAS5‐specific small interfering RNA or adeno‐associated virus delivering small hairpin RNAs, respectively. The effects of GAS5 knockdown on myocardial I/R injury were detected by CCK‐8, myocardial enzyme test, flow cytometry, TTC and terminal deoxynucleotidyl transferase dUTP nick end labelling (TUNEL) staining. qRT‐PCR and luciferase reporter assay were carried out to analyse the relationship between GAS5 and miR‐335. The regulation of GAS5 on Rho‐associated protein kinase 1 (ROCK1) expression, the activation of PI3K/AKT/GSK‐3β pathway and mitochondrial permeability transition pore (mPTP) opening was further evaluated. The results indicated that GAS5 knockdown enhanced the viability, decreased apoptosis and reduced the levels of lactate dehydrogenase and creatine kinase‐MB in H/R‐treatment cardiomyocytes. Meanwhile, down‐regulation of GAS5 limited myocardial infarct size and reduced apoptosis in I/R‐heart. GAS5 was found to bind to miR‐335 and displayed a reciprocal inhibition between them. Furthermore, GAS5 knockdown repressed ROCK1 expression, activated PI3K/AKT, thereby leading to inhibition of GSK‐3β and mPTP opening. These suppressions were abrogated by miR‐335 inhibitor treatment. Taken together, our results demonstrated that down‐regulation of GAS5 ameliorates myocardial I/R injury via the miR‐335/ROCK1/AKT/GSK‐3β axis. Our findings suggested that GAS5 may be a new therapeutic target for the prevention of myocardial I/R injury.
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Affiliation(s)
- Nan Wu
- The Central Laboratory of the First Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiaowen Zhang
- Medical Research Center, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yandong Bao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Hang Yu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Chunyan Ma
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, China
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Guan Z, Liu S, Wang Y, Meng P, Zheng X, Jia D, Yang J, Ma C. Left ventricular systolic dysfunction potentially contributes to the symptoms in heart failure with preserved ejection fraction. Echocardiography 2019; 36:1825-1833. [PMID: 31573711 DOI: 10.1111/echo.14496] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2019] [Revised: 09/12/2019] [Accepted: 09/13/2019] [Indexed: 12/18/2022] Open
Abstract
AIMS Left ventricular diastolic dysfunction (LVDD) is considered a key factor associated with heart failure (HF) symptoms in patients with preserved ejection fraction (HFpEF). However, LV systolic performance, including LV systolic function and synchrony, has not been well characterized in these patients. The aims of this study were to assess to investigate the underlying relationship and differences between subclinical LVDD and HFpEF. METHODS Eighty-six patients with LVDD were recruited (58 with HFpEF and 28 with subclinical LVDD). Systolic left ventricular (LV) longitudinal strain (LS), systolic longitudinal strain rate (LSrS), early diastolic longitudinal strain rate (LSrE), and late diastolic longitudinal strain rate (LSrA) were measured using speckle tracking echocardiography. LV diastolic and systolic dyssynchrony (Te-SD and Ts-SD) were calculated. Forty age- and sex-matched healthy individuals were enrolled as a control group. RESULTS LV global LS and LSrS were decreased in patients with HFpEF than in normal controls and subclinical LVDD patients (P < .05). Te-SD and Ts-SD were significantly more prolonged in subclinical LVDD and HFpEF patients than in the control group (P < .05). Reduced LS was associated with HF symptoms in LVDD patients, and a cutoff value of -18% for LS could differentiate HFpEF from subclinical LVDD with 73% sensitivity and 69% specificity. CONCLUSION LV systolic function and mechanical dyssynchrony were impaired in HFpEF patients. Deteriorated LV longitudinal systolic function was likely correlated with the symptoms of HFpEF.
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Affiliation(s)
- Zhengyu Guan
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China
| | - Shuang Liu
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China
| | - Yonghuai Wang
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China
| | - Pingping Meng
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China
| | - Xianfeng Zheng
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, China
| | - Dalin Jia
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, China
| | - Jun Yang
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China
| | - Chunyan Ma
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, China
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Li X, Jia P, Huang Z, Liu S, Miao J, Guo Y, Wu N, Jia D. Lycopene protects against myocardial ischemia-reperfusion injury by inhibiting mitochondrial permeability transition pore opening. Drug Des Devel Ther 2019; 13:2331-2342. [PMID: 31371925 PMCID: PMC6635826 DOI: 10.2147/dddt.s194753] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 05/22/2019] [Indexed: 01/02/2023]
Abstract
Background Mitochondria permeability transition pore (MPTP) is an important therapeutic target for myocardial ischemia-reperfusion injury (MIRI). Lycopene (LP) is a potent antioxidant extracted from the mature fruits of plants and has been reported to protect against MIRI; however, its mechanism of action has yet to be completely elucidated. The present study aimed to investigate the role of MPTP in the cardioprotection of LP. Methods H9c2 cells were pretreated with LP for 12 hrs and were subjected to 12-hr hypoxia/1-hr re-oxygenation, and cell viability was measured by a Cell Counting Kit-8 (CCK-8) assay. Male rats were subsequently intraperitoneally injected with LP for 5 consecutive days. At 24 hrs following the final injection, the rat hearts were isolated and subjected to 30-min ischemia/120-min reperfusion using Langendorff apparatus. The myocardial infarct size was measured by a TTC stain. Opening of the MPTP was induced by CaCl2 and measured by colorimetry. The change in mitochondrial transmembrane potential (ΔΨm) was observed under a fluorescence microscope. Apoptosis was measured by flow cytometry and a TUNEL stain, and the expression of apoptosis-related proteins was detected by Western blotting. Results LP pretreatment significantly increased cell viability, reduced myocardial infarct size and decreased the apoptosis rate. In addition, opening and the decrease of ΔΨm were attenuated by LP and the expressions of cytochrome c, APAF-1, cleaved caspase-9 and cleaved caspase-3 were also decreased by LP. However, these beneficial effects on MIRI were abrogated by the MPTP opener (atractyloside). Furthermore, LP treatment markedly increased Bcl-2 expression, decreased Bax expression and the Bax/Bcl-2 ratio. Conclusion The results of the present study demonstrated that LP protects against MIRI by inhibiting MPTP opening, partly through the modulation of Bax and Bcl-2.
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Affiliation(s)
| | | | | | | | | | | | - Nan Wu
- The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, People's Republic of China
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Duan L, Liang C, Li X, Huang Z, Liu S, Wu N, Jia D. Lycopene restores the effect of ischemic postconditioning on myocardial ischemia‑reperfusion injury in hypercholesterolemic rats. Int J Mol Med 2019; 43:2451-2461. [PMID: 31017253 PMCID: PMC6488174 DOI: 10.3892/ijmm.2019.4166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 04/10/2019] [Indexed: 12/02/2022] Open
Abstract
Ischemic postconditioning (IPoC) has been demonstrated to prevent myocardial ischemia-reperfusion injury (MIRI), but its cardioprotective effect is abrogated by hypercholesterolemia. The aim of the present study was to determine whether lycopene (LP), a type of carotenoid, can restore the cardioprotective effect of IPoC in hypercholesterolemic rats. Male Wistar rats were fed a cholesterol-enriched diet for 12 weeks to establish a hypercholesterolemic model. The rat hearts were isolated and subjected to 30 min ischemia and 60 min reperfusion using a Langendorff apparatus. LP was administered to the rats intraperitoneally for 5 consecutive days prior to ischemia and reperfusion. Myocardial pathological changes, infarct size and cell apoptosis were measured by hematoxylin and eosin, triphenyltetrazolium chloride and TUNEL staining, respectively. The changes in endoplasmic reticulum (ER) stress markers, the reperfusion injury salvage kinase (RISK) pathway and mitochondrial apoptosis-related proteins were detected by western blotting. Overall, the results demonstrated that low-dose LP in combination with IPoC ameliorated myocardial histopathological changes, reduced the infarct size and release of cardiac enzymes, and decreased cardiomyocyte apoptosis in hypercholesterolemic rats, but no beneficial effects were achieved by the same dose of LP or IPoC treatment were used alone. Furthermore, the combination of LP and IPoC inhibited the expression of glucose-regulated protein 78 and C/EBP homologous protein, increased the phosphorylation levels of AKT, ERK1/2 and glycogen synthase kinase-3β, repressed mitochondrial permeability transition pore opening, and reduced the expression of cytochrome c, cleaved caspase-9 and cleaved caspase-3. Collectively, these findings demonstrated that LP can restore the cardioprotective effects of IPoC on MIRI in hypercholesterolemic rats, and this restoration by LP was mediated by inhibition of ER stress and reactivation of the RISK pathway in hypercholesterolemic rat myocardium.
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Affiliation(s)
- Lian Duan
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Changbin Liang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xuying Li
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zijun Huang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Shuang Liu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Wu
- Central Laboratory of The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Park JH, Jung KH, Vithayathil S, Jia D, Kaipparettu BA. Abstract P2-02-11: Combinational treatment of biguanides and fatty acid β-oxidation inhibitor in triple-negative breast cancers. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-02-11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Among breast cancers (BCs), the driver pathways and therapeutic targets are still poorly understood for triple negative (TN) BCs. Advances in cancer metabolism research over the last decade have enhanced our understanding on metabolic reprogramming in cancer therapy. We have previously shown that metabolic reprogramming to fatty acid β-oxidation (FAO) is a major energy pathway in metastatic TNBC. Moreover, we reported that FAO regulates c-Src, one of the frequently upregulated oncopathways in TNBC via autophosphorylation of Src at Y419. Since FAO inhibitors alone cannot effectively control the tumor progression in TNBC, suitable combination therapies with other metabolic targets are necessary. Recently increasing evidences show that anti-diabetic biguanides have attractive anticancer effect in various cancer types including BC. However, its significance as an anticancer drug is not well established due to parallel metabolic pathways that support tumor growth.
Phenformin, a biguanide derivative similar to metformin, has a greater potency than metformin. Like metformin, phenformin also inhibits mitochondrial electron transport chain (ETC) through complex I inhibition. In addition, biguanides lead to the activation of AMPK, which plays a key role in insulin signaling and energy sensing. Importantly, AMPK is an upstream regulator of FAO pathway because it can phosphorylate ACC to activate FAO. Considering the dependency of TNBC to FAO, we evaluated the therapeutic significance of the combination of biguanides(ETC inhibitors) and FAO inhibitors in TNBC progression and metastasis. We hypothesize that blocking both 'arms' of the pathway can provide more pronounced and durable responses in TNBCs. Our different in vitro and in vivo studies using TNBC cell line and PDX models suggest that the combination of both inhibitors can provide better therapeutic significance in metastatic TNBCs. This is a rationale and cost-effective metabolic approach to manage the currently non-targetable metastatic TNBCs. Further investigation into the clinical effectiveness of this combination may provide better treatment opportunities for TNBC patients.
Citation Format: Park JH, Jung KH, Vithayathil S, Jia D, Kaipparettu BA. Combinational treatment of biguanides and fatty acid β-oxidation inhibitor in triple-negative breast cancers [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-02-11.
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Affiliation(s)
- JH Park
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - KH Jung
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - S Vithayathil
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - D Jia
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
| | - BA Kaipparettu
- Baylor College of Medicine, Houston, TX; Center for Theoretical Biological Physics, Rice University, Houston, TX; Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX
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Jung KH, Park JH, Sirupangi T, Jia D, Gandhi N, Pudakalakatti S, Elswood J, Porter W, Putluri N, Zhang XHF, Chen X, Bhattacharya PK, Creighton CJ, Lewis MT, Rosen JM, Wong LJC, Das GM, Osborne CK, Rimawi MF, Kaipparettu BA. Abstract P2-02-14: Metabolic regulation and drug resistance in c-Src activated triple negative breast cancer. Cancer Res 2019. [DOI: 10.1158/1538-7445.sabcs18-p2-02-14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
c-Src (Src) is a proto-oncogene involved in signaling that culminates in the control of multiple biological functions. Src is also one of the most frequently upregulated pathways in triple negative breast cancer (TNBC). Dysregulation of Src has been detected in TNBC and is strongly associated with tumor metastasis and poor prognosis. However, even after promising preclinical studies, Src inhibitors did not show major clinical advantage in unselected TNBC populations. We have previously published that metastatic TNBC has high energy-dependency to mitochondrial fatty acid beta-oxidation (FAO) and FAO activates Src by inducing autophosphorylation at Y419. However, our recent analysis suggests that as observed with the Src inhibitors, TNBC tumors treated with FAO inhibitors also develop drug-resistance and continue tumor growth. Evaluation of their drug resistance mechanism revealed that while short-term inhibition of FAO or Src induces autophagic and apoptotic cell deaths, long-term inhibition results in autophagy-mediated drug resistance and survival. Further analyses suggest that FAO and Src inhibitors activate mitogen-activated protein (MAP) kinase kinase (MEK)/extracellular signal-regulated kinase (ERK) pathway via the induction of cellular reactive oxygen species (ROS) in TNBC. Activated MEK/ERK then induces survival pathways for drug resistance and tumor survival. Validation of in vitro findings using in vivo TNBC models confirmed that combination of FAO/Src inhibitors with MEK/ERK inhibitors can provide significant benefit to overcome the therapeutic resistance of TNBC. These findings open-up new therapeutic opportunities to manage TNBC patients with currently non-targetable metastatic tumors.
Citation Format: Jung KH, Park JH, Sirupangi T, Jia D, Gandhi N, Pudakalakatti S, Elswood J, Porter W, Putluri N, Zhang XH-F, Chen X, Bhattacharya PK, Creighton CJ, Lewis MT, Rosen JM, Wong L-JC, Das GM, Osborne CK, Rimawi MF, Kaipparettu BA. Metabolic regulation and drug resistance in c-Src activated triple negative breast cancer [abstract]. In: Proceedings of the 2018 San Antonio Breast Cancer Symposium; 2018 Dec 4-8; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2019;79(4 Suppl):Abstract nr P2-02-14.
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Affiliation(s)
- KH Jung
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - JH Park
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - T Sirupangi
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - D Jia
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - N Gandhi
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - S Pudakalakatti
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - J Elswood
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - W Porter
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - N Putluri
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - XH-F Zhang
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - X Chen
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - PK Bhattacharya
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - CJ Creighton
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - MT Lewis
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - JM Rosen
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - L-JC Wong
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - GM Das
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - CK Osborne
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - MF Rimawi
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
| | - BA Kaipparettu
- Baylor College of Medicine, Houston; Center for Theoretical Biological Physics, Rice University, Houston; Roswell Park Cancer Institute, Buffalo; MD Anderson Cancer Center, The University of Texas, Houston; Veterinary Integrative Biosciences, Texas A&M University, College Station; Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston; Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston
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Jia P, Wu N, Jia D, Sun Y. Downregulation of MALAT1 alleviates saturated fatty acid-induced myocardial inflammatory injury via the miR-26a/HMGB1/TLR4/NF-κB axis. Diabetes Metab Syndr Obes 2019; 12:655-665. [PMID: 31123414 PMCID: PMC6511247 DOI: 10.2147/dmso.s203151] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/04/2019] [Indexed: 12/12/2022] Open
Abstract
Purpose: The increased level of saturated fatty acids (SFAs) is found in patients with diabetes, obesity, and other metabolic disorders. SFAs can induce lipotoxic damage to cardiomyocytes, but the mechanism is unclear. The long noncoding RNA metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) acts as a key regulator in palmitic acid (PA)-induced hepatic steatosis, but its role in PA-induced myocardial lipotoxic injury is still unknown. The aim of this study was to explore the role and underlying mechanism of MALAT1 in PA-induced myocardial lipotoxic injury. Methods: MALAT1 expression in PA-treated human cardiomyocytes (AC16 cells) was detected by RT-qPCR. The effect of MALAT1 on PA-induced myocardial injury was measured by Cell Counting Kit-8, lactate dehydrogenase (LDH), and creatine kinase-MB (CK-MB) assays. Apoptosis was detected by flow cytometry. The activities of cytokines and nuclear factor (NF)-κB were detected by enzyme-linked immunosorbent assay. The interaction between MALAT1 and miR-26a was evaluated by a luciferase reporter assay and RT-qPCR. The regulatory effects of MALAT1 on high mobility group box 1 (HMGB1) expression were evaluated by RT-qPCR and western blotting. Results: MALAT1 was significantly upregulated in cardiomyocytes after PA treatment. Knockdown of MALAT1 increased the viability of PA-treated cardiomyocytes, decreased apoptosis, and reduced the levels of LDH, CK-MB, TNF-α, and IL-1β. Moreover, we found that MALAT1 specifically binds to miR-26a and observed a reciprocal negative regulatory relationship between these factors. We further found that the downregulation of MALAT1 represses HMGB1 expression, thereby inhibiting the activation of the Toll-like receptor 4 (TLR4)/NF-κB-mediated inflammatory response. These repressive effects were rescued by an miR-26a inhibitor. Conclusion: We demonstrate that MALAT1 is induced by SFAs and its downregulation alleviates SFA-induced myocardial inflammatory injury via the miR-26a/HMGB1/TLR4/NF-κB axis. Our findings provide new insight into the mechanism underlying myocardial lipotoxic injury.
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Affiliation(s)
- Pengyu Jia
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People‘s Republic of China
| | - Nan Wu
- The Central Laboratory of the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People‘s Republic of China
| | - Dalin Jia
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People‘s Republic of China
| | - Yingxian Sun
- Department of Cardiology, the First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People‘s Republic of China
- Correspondence: Yingxian Sun; Dalin JiaDepartment of Cardiology, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang 110001, Liaoning, People’s Republic of ChinaTel +86 248 328 2602; Tel +86 248 328 2602Fax +860 248 328 2602; +860 248 328 2688Email ;
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Miao J, Huang Z, Liu S, Li X, Jia P, Guo Y, Wu N, Jia D. Hydroxytyrosol protects against myocardial ischemia reperfusion injury by inhibiting mitochondrial permeability transition pore opening. Exp Ther Med 2018; 17:671-678. [PMID: 30651849 PMCID: PMC6307473 DOI: 10.3892/etm.2018.7016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 06/01/2018] [Accepted: 10/19/2018] [Indexed: 12/15/2022] Open
Abstract
Hydroxytyrosol (HT), a phenolic compound extracted from olive oil, is reported to protect against myocardial ischemia reperfusion injury (MIRI), but its mechanism has not been fully elucidated. The mitochondria permeability transition pore (MPTP) is an important therapeutic target for MIRI. The present study aimed to investigate the role of MPTP in the cardioprotection of HT. Isolated rat hearts were mounted on a Langendorff apparatus and subjected to 30 min of ischemia followed by 120 min of reperfusion to mimic a MIRI model. Isolated hearts were pretreated with different doses of HT (10, 100 and 1,000 µM) for 10 min prior to ischemia. Myocardial infarct size was detected using TTC staining. Changes in myocardial cell structure were observed using hematoxylin and eosin staining. MPTP opening was detected spectrophotometrically. Myocardial cell apoptosis was observed with terminal deoxynucleotidyl-transferase-mediated dUTP nick end labeling assays. The expression of apoptosis-associated proteins was measured by western blot analysis. The data revealed that HT (100 and 1,000 µM) treatment significantly alleviated pathological damage in ischemic myocardium and reduced myocardial infarct size compared with the untreated control. However, no significant difference was observed in the 10 µM HT treatment group compared with the untreated control. It was further revealed that HT decreased the B cell lymphoma-2 (Bcl-2)-like protein 4 (Bax)/Bcl-2 ratio, suppressed MPTP opening and subsequently decreased the expression of cytochrome c, cleaved caspase-9 and -3, thereby inhibiting apoptosis. Additionally, the beneficial effects of HT on MIRI were reversed by atractyloside, which induces MPTP opening. In conclusion, the present study demonstrated that HT inhibited MPTP opening, partially via modulation of Bax and Bcl-2, thereby protecting against MIRI and thereby providing a pharmacological basis for future research and treatment of MIRI.
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Affiliation(s)
- Jiaxin Miao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zijun Huang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Shuang Liu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xuying Li
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Pengyu Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yuxuan Guo
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Wu
- Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Yue Q, Zhao C, Wang Y, Zhao L, Zhu Q, Li G, Wu N, Jia D, Ma C. Downregulation of growth arrest‑specific transcript 5 alleviates palmitic acid‑induced myocardial inflammatory injury through the miR‑26a/HMGB1/NF‑κB axis. Mol Med Rep 2018; 18:5742-5750. [PMID: 30365114 DOI: 10.3892/mmr.2018.9593] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 09/21/2018] [Indexed: 11/06/2022] Open
Abstract
Palmitic acid (PA) can induce lipotoxic damage to cardiomyocytes, although its precise mechanism of action has not been completely elucidated. Growth arrest‑specific transcript 5 (GAS5) is a long noncoding RNA that serves a regulatory role in several pathological processes, including tumorigenesis, stroke, cardiac fibrosis and osteoarthritis; however, its role in PA‑induced myocardial injury remains elusive. The present study aimed to explore the role and underlying mechanism of GAS5 on PA‑induced myocardial injury. The expression of GAS5 in PA‑treated cardiomyocytes (H9c2 cells) was detected by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR), and its effects on PA‑induced myocardial injury were measured by Cell Counting Kit‑8 and lactate dehydrogenase (LDH) assays. The activities of cytokines and nuclear factor (NF)‑κB were also detected by enzyme‑linked immunosorbent assay, while interactions between GAS5 and microRNA (miR)‑26a were evaluated by luciferase reporter assay and RT‑qPCR. The regulation of GAS5 on high mobility group box 1 (HMGB1) expression was detected by RT‑qPCR and western blotting. The results demonstrated that GAS5 was significantly upregulated in cardiomyocytes following treatment with PA. GAS5‑knockdown increased the viability of PA‑treated cardiomyocytes and reduced the activity of LDH, tumor necrosis factor‑α and interleukin‑1β. Furthermore, the present study identified that GAS5 specifically binds to miR‑26a, and a reciprocal negative regulation exists between the two. The present study also demonstrated that GAS5 downregulation inhibited HMGB1 expression and NF‑κB activation, while these suppressive effects were mediated by miR‑26a. In conclusion, the present study demonstrated that PA can induce GAS5 expression and that the downregulation of GAS5 alleviated PA‑induced myocardial inflammatory injury through the miR‑26a/HMGB1/NF‑κB axis. These data may provide a novel insight into the mechanism of myocardial lipotoxic injury.
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Affiliation(s)
- Qingxiong Yue
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Cuiting Zhao
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yonghuai Wang
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Lanting Zhao
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Qing Zhu
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Guangyuan Li
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Wu
- The Core Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Chunyan Ma
- Department of Cardiovascular Ultrasound, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Liu S, Wu N, Miao J, Huang Z, Li X, Jia P, Guo Y, Jia D. Protective effect of morin on myocardial ischemia‑reperfusion injury in rats. Int J Mol Med 2018; 42:1379-1390. [PMID: 29956744 PMCID: PMC6089753 DOI: 10.3892/ijmm.2018.3743] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Accepted: 06/22/2018] [Indexed: 12/20/2022] Open
Abstract
Morin, a natural flavonol, exhibits antioxidative, anti-inflammatory and anti-apoptotic effects in various pathological and physiological processes. However, whether morin exerts a protective effect on myocardial ischemia-reperfusion injury (MIRI) is unknown. The present study aimed to determine the effect of morin on MIRI in cultured cardiomyocytes and isolated rat hearts, and to additionally explore the underlying mechanism. The effect of morin on the viability, lactate dehydrogenase (LDH) activity and apoptosis of H9c2 cardiomyocytes subjected to hypoxia/reoxygenation, and cardiac function and infarct size of rat hearts following ischemia/reperfusion in an animal model were measured. Furthermore, the mitochondrial permeability transition pore (MPTP) opening, mitochondrial membrane potential (ΔΨm), and the change in the expression levels of B-cell lymphoma 2 (Bcl2)-associated X protein (Bax), Bcl-2 and mitochondrial apoptosis-associated proteins following MPTP opening were also detected. The results indicated that morin treatment significantly increased cell viability, decreased LDH activity and cell apoptosis, improved the recovery of cardiac function and decreased the myocardial infarct size. Furthermore, morin treatment markedly inhibited MPTP opening, prevented the decrease of ΔΨm, and decreased the expression of cytochrome c, apoptotic protease activating factor-1, caspase-9, caspase-3 and the Bax/Bcl-2 ratio. However, these beneficial effects were reversed by treatment with atractyloside, an MPTP opener. The present study demonstrated that morin may prevent MIRI by inhibiting MPTP opening and revealed the possible mechanism of the cardioprotection of morin and its acting target. It also provided an important theoretical basis for the research on drug interventions for MIRI in clinical applications.
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Affiliation(s)
- Shuang Liu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Wu
- The Central Laboratory, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Jiaxin Miao
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Zijun Huang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Xuying Li
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Pengyu Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Yuxuan Guo
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Jia P, Liu C, Wu N, Jia D, Sun Y. Agomelatine protects against myocardial ischemia reperfusion injury by inhibiting mitochondrial permeability transition pore opening. Am J Transl Res 2018; 10:1310-1323. [PMID: 29887947 PMCID: PMC5992559] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 04/26/2018] [Indexed: 06/08/2023]
Abstract
Agomelatine is a melatonin (MT1/MT2) receptor agonist and serotonin (5-HT2C) receptor antagonist. To study the effects of agomelatine on myocardial ischemia reperfusion injury (MIRI), an isolated rat heart model was utilized. To induce MIRI, rat hearts were isolated and subjected to 30 min of ischemia followed by 120 min of reperfusion. Rats were intraperitoneally injected with agomelatine (10, 20 or 40 mg/kg) 1 h before heart isolation. Agomelatine (20 mg/kg and 40 mg/kg) significantly improved cardiac function, alleviated pathological changes in the ischemic myocardium, reduced myocardial infarct size and decreased release of creatine kinase-MB and lactate dehydrogenase. Heart tissue from agomelatine-treated rats retained higher NAD+ content and was more resistant to Ca2+, indicating inhibition of mitochondrial permeability transition pore (MPTP) opening. Notably, agomelatine's protective effects were abrogated by atractyloside, a MPTP opener. We also found that agomelatine significantly enhanced GSK-3β phosphorylation and decreased expression of cytochrome C, cleaved caspase 9 and cleaved caspase 3, resulting in a decreased apoptosis rate. These findings demonstrate that agomelatine protects against MIRI by inhibiting MPTP opening.
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Affiliation(s)
- Pengyu Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical UniversityLiaoning, China
| | - Chunting Liu
- Department of Cardiology, The First Affiliated Hospital of China Medical UniversityLiaoning, China
| | - Nan Wu
- Central Laboratory of The First Affiliated Hospital of China Medical UniversityLiaoning, China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical UniversityLiaoning, China
| | - Yingxian Sun
- Department of Cardiology, The First Affiliated Hospital of China Medical UniversityLiaoning, China
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Liang B, Keshishian V, Liu S, Yi E, Jia D, Zhou Y, Kieffer J, Ye B, Laine R. Processing liquid-feed flame spray pyrolysis synthesized Mg 0.5 Ce 0.2 Zr 1.8 (PO 4 ) 3 nanopowders to free standing thin films and pellets as potential electrolytes in all-solid-state Mg batteries. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Jia D, Zhou Q, Deng Q. [Research progress on three-dimensional printing of cardiovascular in vitro functional flow models]. Zhonghua Xin Xue Guan Bing Za Zhi 2018; 46:318-322. [PMID: 29747332 DOI: 10.3760/cma.j.issn.0253-3758.2018.04.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang W, Ward R, Jia D, Ashworth S, Estoesta E, Moodie T, McCredie R, Ahern V, Stuart K, Ngui N, French J, Elder E, Farlow D. EP-1305: Location of arm draining lymph node in relation to breast cancer radiotherapy field and volume. Radiother Oncol 2018. [DOI: 10.1016/s0167-8140(18)31615-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zhang T, Zheng T, Wang C, Zhang W, Jia D, Wang R, Qiao B. EFFECTS OF Wnt / β-CATENIN SIGNALING PATHWAY AND STAR D7 ON TESTOSTERONE SYNTHESIS. Acta Endocrinol (Buchar) 2018; 14:155-162. [PMID: 31149252 PMCID: PMC6516511 DOI: 10.4183/aeb.2018.155] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
BACKGROUND This study aimed to assess the mechanism through which Wnt/ beta - catenin signaling pathway, and StarD7, prometes testosterone synthesis, and to explore a new pathway for the regulation of testosterone synthesis. ANIMALS AND METHODS Leydig cells were isolated from male Sprague-Dawley rats divided into four groups and treated with Annexin 5 in concentration of 0, 0.1, 1 and 10 nmol/L. Testosterone secretion, expression of StarD7, StarD7 mRNA, β-catenin and changes of β - catenin localization in Leydig cells of testis of rats were tested in the four groups. RESULTS mRNA and protein levels of StarD7 and β-catenin increased significantly, upon stimulation with 1 nmol/L annexin 5. Accumulation of β-catenin inside the cells and the nucleus, was observed by immunofluorescence staining, in cells treated with annexin 5. These findings indicate a possible role of StarD7 and β-catenin in the process of annexin5-mediated stimulation of testosterone synthesis. CONCLUSIONS Wnt/β-catenin signaling pathway and StarD7 are involved in the process of annexin5 stimulation of testosterone synthesis. Activation of Wnt/ β-catenin signaling pathway by Annexin5, and increase in StarD7 expression lead to elevated expression of key regulatory enzymes in testosterone synthesis, thus promoting testosterone synthesis.
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Affiliation(s)
| | | | | | | | | | | | - B. Qiao
- The First Affiliated Hospital of Zhengzhou University, Department of Urology, Zhengzhou, China
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Liu S, Guan Z, Zheng X, Meng P, Wang Y, Li Y, Zhang Y, Yang J, Jia D, Ma C. Impaired left atrial systolic function and inter-atrial dyssynchrony may contribute to symptoms of heart failure with preserved left ventricular ejection fraction: A comprehensive assessment by echocardiography. Int J Cardiol 2018; 257:177-181. [DOI: 10.1016/j.ijcard.2017.12.042] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 11/24/2017] [Accepted: 12/13/2017] [Indexed: 11/26/2022]
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Diestler DJ, Jia D, Manz J, Yang Y. Na 2 Vibrating in the Double-Well Potential of State 2 1Σ u+ (JM = 00): A Pulsating "Quantum Bubble" with Antagonistic Electronic Flux. J Phys Chem A 2018; 122:2150-2159. [PMID: 29364671 DOI: 10.1021/acs.jpca.7b11732] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The theory of concerted electronic and nuclear flux densities associated with the vibration and dissociation of a multielectron nonrotating homonuclear diatomic molecule (or ion) in an electronic state 2S+1Σg,u+ (JM = 00) is presented. The electronic population density, nuclear probability density, and nuclear flux density are isotropic. A theorem of Barth , presented in this issue, shows that the electronic flux density (EFD) is also isotropic. Hence, the evolving system appears as a pulsating, or exploding, "quantum bubble". Application of the theory to Na2 vibrating in the double-minimum potential of the 2 1Σu+ (JM = 00) excited state reveals that the EFD consists of two antagonistic components. One arises from electrons that flow essentially coherently with the nuclei. The other, which is oppositely directed (i.e., antagonistic) and more intense, is due to the transition in electronic structure from "Rydberg" to "ionic" type as the nuclei traverse the potential barrier between inner and outer potential wells. This "transition" component of the EFD rises and falls sharply as the nuclei cross the barrier.
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Affiliation(s)
- D J Diestler
- Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany.,University of Nebraska-Lincoln , Lincoln, Nebraska 68583, United States
| | | | - J Manz
- Institut für Chemie und Biochemie, Freie Universität Berlin , 14195 Berlin, Germany.,Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China
| | - Y Yang
- Collaborative Innovation Center of Extreme Optics, Shanxi University , Taiyuan 030006, China
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Liu S, Guan Z, Jin X, Meng P, Wang Y, Zheng X, Jia D, Ma C, Yang J. Left ventricular diastolic and systolic dyssynchrony and dysfunction in heart failure with preserved ejection fraction and a narrow QRS complex. Int J Med Sci 2018; 15:108-114. [PMID: 29333094 PMCID: PMC5765723 DOI: 10.7150/ijms.21956] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/12/2017] [Indexed: 12/17/2022] Open
Abstract
Aims: Mechanical dyssynchrony has been reported in heart failure with preserved ejection fraction (HFpEF), with a majority of patients having a narrow QRS complex; however, whether any benefit is observed with restoration of dyssynchrony remains unclear. We sought to assess left ventricular (LV) dyssynchrony and function in HFpEF and elucidate the underlying mechanisms that may account for HFpEF. Methods: Seventy-eighty patients with a narrow QRS complex including 47 with HFpEF, 31 with heart failure with reduced ejection fraction (HFrEF) patients, and 29 with asymptomatic left ventricular diastolic dysfunction (LVDD) were recruited. Forty-five normal subjects acted as controls. Systolic LV longitudinal strain (LS), systolic longitudinal strain rate (LSrS), early diastolic longitudinal strain rate (LSrE), and late diastolic longitudinal strain rate (LSrA) were measured using speckle tracking echocardiography. LV diastolic and systolic dyssynchrony (Te-SD and Ts-SD) were calculated. Results: Te-SD and Ts-SD were prolonged in HFpEF and HFrEF patients than in the control group (p<0.05). However, Ts-SD was shorter in HFpEF patients compared to HFrEF patients despite a narrow QRS complex (p<0.05). LV global LS, LSrS, and LSrE were decreased in patients with HFpEF and HFrEF compared to other groups, with HFrEF being even more reduced than HFpEF (p<0.05). Reduced LS, LSrS, and LSrE could effectively differentiate HF from asymptomatic LVDD patients (p<0.05). Conclusion: HFrEF exhibited increased systolic dyssynchrony compared to HFpEF despite a narrow QRS complex in addition to the more reduced diastolic and systolic function. Therefore, targeting to improve diastolic and systolic function instead of managing systolic dyssynchrony might be of great importance in the treatment of HFpEF.
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Affiliation(s)
- Shuang Liu
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China, 110001
| | - Zhengyu Guan
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China, 110001
| | - Xuanyi Jin
- Department of Cardiology, Mayo Clinic (Arizona), Scottsdale, Arizona, United States, 85259
| | - Pingping Meng
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China, 110001
| | - Yonghuai Wang
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China, 110001
| | - Xianfeng Zheng
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Dalin Jia
- Department of Cardiology, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China
| | - Chunyan Ma
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China, 110001
| | - Jun Yang
- Department of Cardiovascular Ultrasound, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China, 110001
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Jia P, Wu N, Jia D, Sun Y. Association Between Osteoprotegerin Gene Polymorphisms and Risk of Coronary Artery Disease: A Systematic Review and Meta-analysis. Balkan J Med Genet 2017; 20:27-34. [PMID: 29876230 PMCID: PMC5972500 DOI: 10.1515/bjmg-2017-0021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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] [Indexed: 01/11/2023] Open
Abstract
Osteoprotegerin (OPG) has been demonstrated to be a novel biomarker for predicting prevalence and severity of coronary artery disease (CAD). Furthermore, recent studies have shown that OPG gene polymorphisms are associated with a susceptibility to CAD. However, published studies showed inconsistent results. Therefore, a meta-analysis of eligible studies reporting the association between OPG gene polymorphisms and CAD was carried out. A systematic search was conducted using PubMed, Web of Science, Cochrane Library, Chinese National Knowledge Infrastructure (CNKI) and Chinese Wan Fang databases. Odds ratio (OR) with corresponding 95% confidence interval (95% CI) were calculated. Overall, six eligible studies were included and four OPG gene polymorphisms (G209A, T245G, T950C and G1181C) were further evaluated for the association with susceptibility to CAD in this meta-analysis. Meta-analysis showed that G1181C and T950C polymorphisms were strongly associated with the risk of CAD, but no association existed between G209A and T245G polymorphisms and the risk of CAD. In conclusion, our meta-analysis is the first report to estimate the association between OPG gene polymorphisms and susceptibility to CAD. Further large scale case-control studies with rigorous design should be conducted to confirm the above conclusions in the future.
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Affiliation(s)
- P Jia
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
| | - N Wu
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
| | - D Jia
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
- Professor Dalin Jia and/or Professor Yingxian Sun, Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North Nanjing Street, Heping District, Shenyang 110001, Liaoning Province, People’s Republic of China. Tel: +86-242-326-9477. Fax: +86-242-326-9477.
| | - Y Sun
- Department of Cardiology, the First Affiliated Hospital of China, Medical University, Liaoning Province, Shenyang, People’s Republic of China
- Professor Dalin Jia and/or Professor Yingxian Sun, Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North Nanjing Street, Heping District, Shenyang 110001, Liaoning Province, People’s Republic of China. Tel: +86-242-326-9477. Fax: +86-242-326-9477.
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Wang X, Jia D, Zhang J, Wang W. Grape seed proanthocyanidins protect cardiomyocytes against hypoxia/reoxygenation injury by attenuating endoplasmic reticulum stress through PERK/eIF2α pathway. Mol Med Rep 2017; 16:9189-9196. [PMID: 29039545 DOI: 10.3892/mmr.2017.7756] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Accepted: 08/23/2017] [Indexed: 11/06/2022] Open
Abstract
The aim of the present study was to observe the protective effect of grape seed proanthocyanidins (GSPs) against endoplasmic reticulum (ER) stress‑mediated apoptosis caused by hypoxia/reoxygenation (H/R) injury in H9C2 cardiomyocytes along with its potential mechanisms. H9C2 cardiomyocytes underwent hypoxia for 3 h followed by reoxygenation for 3 h. Different doses of GSPs (50, 100 and 200 µg/ml) were administered 30 min before hypoxia. Cell viability was assessed, as well as lactic dehydrogenase (LDH) activity, cell apoptosis rate, expression levels of glucose‑regulated protein 78 (GRP78), C/EBP‑homologous protein (CHOP), protein kinase RNA‑like ER kinase (PERK), and eukaryotic translation initiation factor‑2 (eIF2α) mRNA and protein. The results revealed that GSPs improved cell viability, reduced LDH activity and reduced the apoptosis rate in cells subjected to H/R, and that the protective effect was most significant when 100 µg/ml in GSPs was administered. GSPs treatment also decreased mRNA and protein expression of GRP78, CHOP, eIF2α and the level of the phosphorylated form of PERK. Furthermore, GSPs displayed a similar protective effect to that of established ER stress inhibitor 4‑phenyl butyric acid. In conclusion, the findings of this study suggest that GSPs may protect H9C2 cardiomyocytes from H/R injury by decreasing ER stress‑mediated apoptosis through the suppression of the PERK/eIF2α signaling pathway.
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Affiliation(s)
- Xin Wang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Juncheng Zhang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Wei Wang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Shen GM, Shi CY, Fan C, Jia D, Wang SQ, Xie GS, Li GY, Mo ZL, Huang J. Isolation, identification and pathogenicity of Vibrio harveyi, the causal agent of skin ulcer disease in juvenile hybrid groupers Epinephelus fuscoguttatus × Epinephelus lanceolatus. J Fish Dis 2017; 40:1351-1362. [PMID: 28252178 DOI: 10.1111/jfd.12609] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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: 08/29/2016] [Revised: 12/08/2016] [Accepted: 12/10/2016] [Indexed: 06/06/2023]
Abstract
The hybrid grouper, Epinephelus fuscoguttatus (♀) × Epinephelus lanceolatus (♂), is a newly bred cultivated marine fish species of high economic value. However, a skin ulcer disease with high mortality has occurred, and the responsible pathogen remains unknown. In this study, we summarized the epidemic status and external signs of this disease. We screened potential pathogens and finally isolated one bacterial strain ML01 from affected fish. We subjected healthy juvenile hybrid groupers to bacterial challenge tests with the isolate by immersion, immersion after dermal abrasion and intraperitoneal injection, respectively. Within 14 days post-infection, the isolate ML01 caused mass mortality of juveniles infected via immersion after dermal abrasion or intraperitoneal injection. Diseased juveniles displayed obvious signs of skin ulcers. The median lethal dose of ML01 by intraperitoneal injection was 1.10 × 105 colony-forming units. ML01 was identified as Vibrio harveyi by bacterial morphology, analytical profile index identification, 16S rDNA sequencing and multilocus sequence analysis. Antibiotic susceptibility tests showed that ML01 was sensitive to ceftriaxone, doxycycline and minocycline. The results of this study suggest that V. harveyi is the causal agent of skin ulcer disease in juvenile hybrid groupers, thus providing a basis for effective control and prevention of this disease.
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Affiliation(s)
- G M Shen
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - C Y Shi
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - C Fan
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - D Jia
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - S Q Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - G S Xie
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - G Y Li
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Z L Mo
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - J Huang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture of P. R. China, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, China
- Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
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Jia D, Zhou Q, Song HN, Hu B, Chen JL, Mei DE, Tan TT, Guo RQ. P4563A comparative study of 3d reconstruction of left atrial appendage model based on ultrasound and CT 3d DICOMdata. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4563] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Wang C, Wang J, Jia D, Li L, Jia B, Fan S, Song J, Hu X, Wang Y, Wang D. Anti-nociceptive effects of Paecilomyces hepiali via multiple pathways in mouse models. Genet Mol Res 2016; 15:gmr8996. [PMID: 27706666 DOI: 10.4238/gmr.15038996] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Paecilomyces hepiali (PH), a well-known medicinal fungus, has various pharmacological efficacies. In our study, the antinociceptive effects of PH and underlying mechanisms were evaluated using various mouse models. An acetic acid-induced writhing test, hot plate test, and formalin test were employed to evaluate the antinociceptive activities of PH. The levels of neuronal nitric oxide synthase (nNOS) in the hypothalamus and monoamine neurotransmitters in the serum and hypothalamus of experimental mice were examined. Additionally, hot plate tests using mice pretreated with various antagonists were used to determine the mechanisms of PH-mediated antinociception. The PH-enhanced latency period of mice in the hot plate test was significantly blocked by pretreatment with atropine and glibenclamide. PH shortened the phase I and phase II reaction times of formalin-treated mice. Strongly reduced writhing and stretching induced by acetic acid were observed in PH-treated mice, indicating that PH mainly exerts antinociceptive activity on neurogenic pain. After thermal pain stimulation for 30 s, compared to control mice, 7-day PH-treated mice had lower nNOS and dopamine levels, and increased levels of serotonin in both the serum and hypothalamus. Collectively, our data showed that PH mediated antinociceptive activities via multiple pathways, including monoamines, nNOS/ATP-sensitive K+ channels, and M-type acetylcholine receptors.
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Affiliation(s)
- C Wang
- School of Life Sciences, Jilin University, Changchun, China
| | - J Wang
- School of Life Sciences, Jilin University, Changchun, China
| | - D Jia
- School of Life Sciences, Jilin University, Changchun, China
| | - L Li
- School of Life Sciences, Jilin University, Changchun, China
| | - B Jia
- School of Life Sciences, Jilin University, Changchun, China
| | - S Fan
- School of Life Sciences, Jilin University, Changchun, China
| | - J Song
- School of Life Sciences, Jilin University, Changchun, China
| | - X Hu
- Faculty of Clinical Medicine, Changchun Medical College, Changchun, China
| | - Y Wang
- School of Life Sciences, Jilin University, Changchun, China
| | - D Wang
- School of Life Sciences, Jilin University, Changchun, China
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Jia D, Lu W, Wang C, Sun S, Cai G, Li Y, Wang G, Liu Y, Zhang M, Wang D. Investigation on Immunomodulatory Activity of Calf Spleen Extractive Injection in Cyclophosphamide-induced Immunosuppressed Mice and Underlying Mechanisms. Scand J Immunol 2016; 84:20-7. [DOI: 10.1111/sji.12442] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2016] [Accepted: 04/17/2016] [Indexed: 12/20/2022]
Affiliation(s)
- D. Jia
- School of Life Sciences; Jilin University; Changchun China
| | - W. Lu
- School of Life Sciences; Jilin University; Changchun China
| | - C. Wang
- School of Life Sciences; Jilin University; Changchun China
| | - S. Sun
- JiLin AoDong Medicine Industry Group Co. Ltd.; Taonan China
| | - G. Cai
- School of Life Sciences; Jilin University; Changchun China
| | - Y. Li
- School of Life Sciences; Jilin University; Changchun China
| | - G. Wang
- JiLin AoDong Medicine Industry Group Co. Ltd.; Taonan China
| | - Y. Liu
- School of Life Sciences; Jilin University; Changchun China
| | - M. Zhang
- School of Life Sciences; Jilin University; Changchun China
| | - D. Wang
- School of Life Sciences; Jilin University; Changchun China
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Xia F, Jia D, Han Y, Wang S, Wang X. Different Treatment Strategies for Patients with Multivessel Coronary Disease and High SYNTAX Score. Cell Biochem Biophys 2016; 73:769-74. [PMID: 27259323 DOI: 10.1007/s12013-015-0588-6] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We sought to evaluate the prognosis of different treatment strategies on patients with multivessel coronary disease and high SYNTAX score. 171 patients with multivessel coronary disease and SYNTAX score ε33, who underwent coronary angiography between July 2009 and July 2010 at our hospital were retrospectively selected and divided into incomplete and complete revascularization intervention groups (IR), a coronary artery bypass surgery group (CABG), a conservative drug therapy group according to treatment strategies chosen and agreed by the patients. These patients were followed up for 19.44 ± 5.73 months by telephone or outpatient service. We found the medical treatment group has a lower overall survival than the IR, CR group, and CABG group (P log-rank values are 0.03, 0.03, and 0.02, respectively). The medical treatment group also has a lower survival than the IR group, CR group, and CABG group in cerebral stroke and recurrent myocardial infarction (MI) (P log-rank values are 0.004, 0.03, and 0.001, respectively) and MACE events (P log-rank values are 0.003, 0.001 and P < 0.001, respectively). The medical treatment group and IR group have lower survival in recurrent angina pectoris than the CR group and CABG group (P log-rank values are 0.02, 0.02 and 0.03, 0.008, respectively). There are no significant differences between the CR group and the CABG group in number of deaths, strokes and recurrent MIs, MACE events, angina pectoris (P log-rank values are 0.69, 0.53, and 0.86, respectively). The IR group shows a lower survival than the CR group and CABG group only in angina pectoris (P log-rank values are 0.03 and 0.008, respectively). For the patients with a high SYNTAX score, medical treatment is still inferior to revascularization therapy (interventional therapy or coronary artery bypass surgery). It appears that the CABG is not obviously superior to the coronary intervention therapy. Complete revascularization and coronary artery bypass grafting treatments simply have better survival in angina pectoris compared to the incomplete revascularization. Therefore, individual treatment strategies are recommended and more trials are required to study these effects.
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Affiliation(s)
- Fei Xia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China.
| | - Yang Han
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Shaojun Wang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
| | - Xin Wang
- Department of Cardiology, The First Affiliated Hospital of China Medical University, 155th North of Nanjing Street, Heping District, Shenyang, 110001, Liaoning, China
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Jia D, Wang D, Wu H, Lian Q. Preparation and adsorption properties of magnetic Co0.5Ni0.5Fe2O4–chitosan nanoparticles. RUSS J GEN CHEM+ 2016. [DOI: 10.1134/s1070363216030294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yepes M, Wu F, Torre E, Cuellar-Giraldo D, Jia D, Cheng L. Tissue-type plasminogen activator induces synaptic vesicle endocytosis in cerebral cortical neurons. Neuroscience 2016; 319:69-78. [PMID: 26820595 DOI: 10.1016/j.neuroscience.2016.01.046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Revised: 01/16/2016] [Accepted: 01/19/2016] [Indexed: 01/22/2023]
Abstract
The release of the serine proteinase tissue-type plasminogen activator (tPA) from the presynaptic terminal of cerebral cortical neurons plays a central role in the development of synaptic plasticity, adaptation to metabolic stress and neuronal survival. Our earlier studies indicate that by inducing the recruitment of the cytoskeletal protein βII-spectrin and voltage-gated calcium channels to the active zone, tPA promotes Ca(2+)-dependent translocation of synaptic vesicles (SVs) to the synaptic release site where they release their load of neurotransmitters into the synaptic cleft. Here we used a combination of in vivo and in vitro experiments to investigate whether this effect leads to depletion of SVs in the presynaptic terminal. Our data indicate that tPA promotes SV endocytosis via a mechanism that does not require the conversion of plasminogen into plasmin. Instead, we show that tPA induces calcineurin-mediated dynamin I dephosphorylation, which is followed by dynamin I-induced recruitment of the actin-binding protein profilin II to the presynaptic membrane, and profilin II-induced F-actin formation. We report that this tPA-induced sequence of events leads to the association of newly formed SVs with F-actin clusters in the endocytic zone. In summary, the data presented here indicate that following the exocytotic release of neurotransmitters tPA activates the mechanism whereby SVs are retrieved from the presynaptic membrane and endocytosed to replenish the pool of vesicles available for a new cycle of exocytosis. Together, these results indicate that in murine cerebral cortical neurons tPA plays a central role coupling SVs exocytosis and endocytosis.
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Affiliation(s)
- M Yepes
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA; Department of Neurology, Veterans Affairs Medical Center, Atlanta, GA, USA.
| | - F Wu
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - E Torre
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - D Cuellar-Giraldo
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - D Jia
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
| | - L Cheng
- Department of Neurology & Center for Neurodegenerative Disease, Emory University School of Medicine, Atlanta, GA, USA
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Lv Y, Pang X, Zhang Q, Jia D. Cardial leiomyosarcoma with multiple lesions involved: a case report. Int J Clin Exp Pathol 2015; 8:15412-15416. [PMID: 26823904 PMCID: PMC4713690] [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] [MESH Headings] [Subscribe] [Scholar Register] [Received: 09/13/2015] [Accepted: 10/23/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Leiomyosarcoma of the heart is extremely rare and may involve many symptoms. The outcome is poor and the median survival is only 6 months. CASE PRESENTATION A 43-years-old female patient complained of palpitation and dyspnea and was diagnosed as bilateral iliac vein-inferior vena cava-right atrium-pulmonary masses. Pathological diagnosis was leiomyosarcoma of vascular origin and she survived for 12 months after surgery. CONCLUSION According to the summarization of 30 vascular leiomyosarcoma cases with heart involved we can find that surgical resection is the basic treatment for cardiac leiomyosarcoma, and surgery combined with chemotherapy may be able to further prolong survival.
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Affiliation(s)
- Yan Lv
- Department of Cardiovascular, The First Affiliated Hospital of China Medical UniversityShenyang 110001, People’s Republic of China
| | - Xin Pang
- Department of Cardiac Surgery, The First Affiliated Hospital of China Medical UniversityShenyang 110001, People’s Republic of China
| | - Qingfu Zhang
- Department of Pathology, The First Affiliated Hospital of China Medical UniversityShenyang 110001, People’s Republic of China
| | - Dalin Jia
- Department of Cardiovascular, The First Affiliated Hospital of China Medical UniversityShenyang 110001, People’s Republic of China
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Wu N, Jia D. GW26-e3819 Association of matrix metalloproteinase-1 -519A/G polymorphism with acute coronary syndrome: a meta-analysis. J Am Coll Cardiol 2015. [DOI: 10.1016/j.jacc.2015.06.432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Li W, Wu N, Shu W, Jia D, Jia P. Pharmacological preconditioning and postconditioning with nicorandil attenuates ischemia/reperfusion-induced myocardial necrosis and apoptosis in hypercholesterolemic rats. Exp Ther Med 2015; 10:2197-2205. [PMID: 26668616 DOI: 10.3892/etm.2015.2782] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 09/01/2015] [Indexed: 12/13/2022] Open
Abstract
Pharmacological preconditioning and postconditioning may reduce myocardial necrosis and apoptosis during ischemia/reperfusion (I/R), however, hypercholesterolemia interferes with the associated cardioprotective mechanisms. The present study investigated whether pharmacological preconditioning and postconditioning with nicorandil could attenuate myocardial necrosis and apoptosis induced by I/R in hypercholesterolemic rats, and explored the possible mechanisms involved. Male Wistar rats (n=160) were fed normal (normocholesterolemic group, n=10) or high-cholesterol (hypercholesterolemic group, n=150) diets for 8 weeks. Hearts harvested from the normal and hypercholesterolemic rats were subsequently placed on modified Langendorff perfusion apparatus and 30-min global ischemia was performed, followed by 120-min reperfusion. Nicorandil (1, 3, 10, 30, 100 µmol/l), and mitochondrial adenosine triphosphate-sensitive potassium (mitoKATP) channel blocker 5-hydroxydecanoic acid sodium salt (5-HD) (100 µmol/l) or soluble guanylyl cyclase (sGC) blocker 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ) (10 µmol/l) were perfused for 10 min, prior to ischemia or at the onset of reperfusion. The myocardial infarct size was determined by triphenyltetrazolium chloride staining, and cardiomyocyte apoptosis was detected by terminal deoxynucleotidyl transferase dUTP nick-end labeling staining. In order to investigate the potential mechanisms, the expression levels of caspase-3, B-cell lymphoma-2 (Bcl-2) proteins and Bcl-2-associated X protein (Bax) were measured using western blot analysis. The present study demonstrated that, in hypercholesterolemic rats, pharmacological preconditioning and postconditioning with nicorandil decreased I/R-induced myocardial necrosis and apoptosis in a concentration-dependent manner. The optimal preconditioning and postconditioning concentration of nicorandil determined to have anti-infarct and anti-apoptosis effects was 30 µmol/l, which significantly (P<0.05) reduced the infarct size to 14.88±3.25% and 15.96±3.29%, and attenuated the percentage of cardiomyocyte apoptosis to 25.20±3.93% and 26.18±4.82%, respectively, compared with the I/R group. However, the cardioprotective effects of nicorandil were partially suppressed by cotreatment with 5-HD or ODQ. Western blot analysis demonstrated that pharmacological preconditioning and postconditioning with nicorandil significantly downregulated caspase-3 and Bax expression, and upregulated Bcl-2 expression compared with the I/R group (P<0.05). The results of the present study suggest that pharmacological preconditioning and postconditioning with nicorandil may protect hypercholesterolemic hearts against I/R-induced necrosis and apoptosis; and the cardioprotective effects of nicorandil may be due to the dual pharmacological mechanisms of opening the mitoKATP channels and a nitric oxide/sGC-dependent mechanism, and regulation of the expression of caspase-3, Bax and Bcl-2.
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Affiliation(s)
- Wenna Li
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Nan Wu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Wenqi Shu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
| | - Pengyu Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning 110001, P.R. China
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Wu N, Jia D. GW26-e3820 The SNP rs4804611 in ZNF627 Gene and the Risk of Myocardial Infarction: A Meta-Analysis. J Am Coll Cardiol 2015. [DOI: 10.1016/j.jacc.2015.06.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Li W, Jia D. GW26-e3826 Pharmacological preconditioning and postconditioning with nicorandil attenuates ischemia/reperfusion-induced myocardial necrosis and apoptosis in hypercholesterolemic rats. J Am Coll Cardiol 2015. [DOI: 10.1016/j.jacc.2015.06.330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Wang X, Jia D, Qi G. [Clinical values of ST-segment changes in ST-segment elevated myocardial infarction patients within 24 hours post primary percutaneous coronary interventions]. Zhonghua Xin Xue Guan Bing Za Zhi 2015; 43:798-801. [PMID: 26652821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
OBJECTIVE To explore the clinical values of ST-segment changes in ST-segment elevated myocardial infarction (STEMI) patients within 24 hours after primary percutaneous coronary intervention (PCI). METHODS A total of 225 patients with STEMI underwent primary PCI were enrolled, the ST segment resolution 1 hour after PCI was calculated and the patients were divided into group A (n = 135, Sgr;STE resolved ≥ 50%) and group B (n = 90, Sgr;STE resolved < 50%). The patients in group B were further divided into group C (n = 56, Sgr;STE resolved ≥ 50%) and group D (n = 34, Sgr;STE resolved < 50%) according to the ST segment resolution at 24 hours after PCI. TIMI flow after PCI, in-hospital major adverse cardiac events (MACE) and cardiac function about 7 days post PCI were analyzed. RESULTS Data between group A and group B were similar except the incidence of pre-PCI Killip ≥ II was significantly higher in group B than in group A (37.8% (34/90) vs. 17.0% (23/135), P < 0.05). Incidence of complicated diabetes (P < 0.05), pre-PCI Killip ≥ II (55.9% (19/34) vs. 26.8% (15/56), P < 0.05) and multivessel disease (70.6% (24/34) vs. 35.7% (20/56), P < 0.05) were significantly higher in group D than in group C. TIMI 3 and the opening time of IRA was similar between group A and group B and between group C and group D. The incidence of in-hospital MACE was significantly higher in group B than in group A (14.4% (13/90) vs. 3.0% (4/135), P < 0.05) which was similar between group C and group D. CONCLUSION Early (1 hour) but not late (24 hours) ST resolution post PCI is related to a favorable clinical outcome in STEMI patients.
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Affiliation(s)
- Xiaowei Wang
- Department of Cardiology, First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - Dalin Jia
- Department of Cardiology, First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - Guoxian Qi
- Department of Cardiology, First Affiliated Hospital of China Medical University, Shenyang 110001, China;
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Wu N, Zhang X, Jia P, Jia D. Hypercholesterolemia aggravates myocardial ischemia reperfusion injury via activating endoplasmic reticulum stress-mediated apoptosis. Exp Mol Pathol 2015; 99:449-54. [PMID: 26318286 DOI: 10.1016/j.yexmp.2015.08.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 08/25/2015] [Indexed: 10/23/2022]
Abstract
The effect of hypercholesterolemia on myocardial ischemia reperfusion injury (MIRI) is in controversy and the underlying mechanism is still not well understood. In the present study, we firstly detected the effects of hypercholesterolemia on MIRI and the role of endoplasmic reticulum (ER) stress-mediated apoptosis pathway in this process. The infarct size was determined by TTC staining, and apoptosis was measured by the TUNEL method. The marker proteins of ER stress response and ER stress-mediated apoptosis pathway were detected by Western blot. The results showed that high cholesterol diet-induced hypercholesterolemia significantly increased the myocardial infarct size, the release of myocardium enzyme and the ratio of apoptosis, but did not affect the recovery of cardiac function. Moreover, hypercholesterolemia also remarkably up-regulated the expressions of ER stress markers (glucose-regulated protein 78 and calreticulin) and critical molecules in ER stress-mediated apoptosis pathway (CHOP, caspase 12, phospho-JNK). In conclusion, our study demonstrated that hypercholesterolemia enhanced myocardial vulnerability/sensitivity to ischemia reperfusion injury involved in aggravation the ER stress and activation of ER stress-mediated apoptosis pathway and it gave us a new insight into the underlying mechanisms associated with hypercholesterolemia-induced exaggerated MIRI and also provided a novel target for preventing MIRI in the presence of hypercholesterolemia.
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Affiliation(s)
- Nan Wu
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China
| | - Xiaowen Zhang
- Department of Medical Genetics, China Medical University, Liaoning, China
| | - Pengyu Jia
- Department of Clinical Medicine, China Medical University, Liaoning, China
| | - Dalin Jia
- Department of Cardiology, The First Affiliated Hospital of China Medical University, Liaoning, China.
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Niu Z, Xie C, Wen X, Tian F, Ding P, He Y, Lin J, Yuan S, Guo X, Jia D, Chen WQ. Placenta mediates the association between maternal second-hand smoke exposure during pregnancy and small for gestational age. Placenta 2015; 36:876-80. [DOI: 10.1016/j.placenta.2015.05.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 03/22/2015] [Accepted: 05/05/2015] [Indexed: 10/23/2022]
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