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ox-LDL-Induced Endothelial Progenitor Cell Oxidative Stress via p38/Keap1/Nrf2 Pathway. Stem Cells Int 2022; 2022:5897194. [PMID: 35140793 PMCID: PMC8820940 DOI: 10.1155/2022/5897194] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 01/09/2023] Open
Abstract
Background Nrf2 which was recently reported to regulate the antioxidant genes and cellular redox regulators was highly expressed in EPCs. However, its role in ox-LDL-induced EPC oxidative stress and apoptosis has not been fully illustrated. Methods EPCs isolated from human peripheral blood mononuclear cells were treated with different concentrations of ox-LDL, Keap1 siRNA, and a specific p38 MAPK inhibitor SB203580 and then used to assay the cytoplasmic Nrf2, nuclear Nrf2, NAD(P) H:quinone oxidoreductase 1 (NQO1) and Bax/Bcl-2 levels with Western blot, NQO1 mRNA levels with RT-PCR, ROS levels with H2DCF-DA, loss/disruption of mitochondrial membrane potential with JC-1, apoptosis with Annexin V and PI, migration with transwell chambers, and tube formation with Matrigel. Results ox-LDL decreased the nuclear Nrf2/Histone H3 to cytoplasmic Nrf2/GAPDH ratio, NQO1 mRNA, and protein levels. ox-LDL enhanced ROS production, induced the loss of membrane potential, and increased the cell shrinkage, pyknotic nuclei, and apoptosis of EPCs. Keap1 siRNA increased Nrf2 nuclear translocation, NQO1 mRNA transcription, and protein expression and prevented ROS generation and formation of JC-1 monomers. ox-LDL increased the activation of p38. SB203580 significantly eliminated ox-LDL induced inhibition of Nrf2 nuclear translocation, depression of NQO1 mRNA transcription, generation of ROS, and formation of JC-1 monomers in EPCs. Keap1 siRNA decreased the Bax/Bcl-2 ratio which was increased by ox-LDL in EPCs. ox-LDL decreased EPC migration and tube formation. Keap1 siRNA preserved the migration and tube formation of EPCs. Conclusion ox-LDL activated EPCs p38/Keap1/Nrf2 pathway and induced oxidative stress, dysfunction, and apoptosis of EPCs.
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Zhao H, He Y. The Inhibitory Effect of Lysophosphatidylcholine on Proangiogenesis of Human CD34 + Cells Derived Endothelial Progenitor Cells. Front Mol Biosci 2021; 8:682367. [PMID: 34179086 PMCID: PMC8223510 DOI: 10.3389/fmolb.2021.682367] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/28/2021] [Indexed: 12/27/2022] Open
Abstract
Increasing evidence reveals that lysophosphatidylcholine (LPC) is closely related to endothelial dysfunction. The present study aimed to investigate the mechanism of LPC in inhibiting the proangiogenesis and vascular inflammation of human endothelial progenitor cells (EPCs) derived from CD34+ cells. The early EPCs were derived from CD34+ hematopoietic stem cells whose purity was identified using flow cytometry analysis. The surface markers (CD34, KDR, CD31; VE-cadherin, vWF, eNOS) of EPCs were examined by flow cytometry analysis and immunofluorescence. RT-qPCR was used to detect the mRNA expression of inflammatory cytokines (CCL2, IL-8, CCL4) and genes associated with angiogenesis (VEGF, ANG-1, ANG-2) in early EPCs after treatment of LPC (10 μg/ml) or phosphatidylcholine (PC, 10 μg/ml, control). The angiogenesis of human umbilical vein endothelial cells (HUVECs) incubated with the supernatants of early EPCs was detected by a tube formation assay. The mRNA and protein levels of key factors on the PKC pathway (phosphorylated PKC, TGF-β1) were measured by RT-qPCR and western blot. The localization of PKC-β1 in EPCs was determined by immunofluorescence staining. We found that LPC suppressed the expression of CCL2, CCL4, ANG-1, ANG-2, promoted IL-8 expression and had no significant effects on VEGF expression in EPCs. EPCs promoted the angiogenesis of HUVECs, which was significantly inhibited by LPC treatment. Moreover, LPC was demonstrated to promote the activation of the PKC signaling pathway in EPCs. In conclusion, LPC inhibits proangiogenesis of human endothelial progenitor cells derived from CD34+ hematopoietic stem cells.
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Affiliation(s)
- Haijun Zhao
- Department of Pain, The First Hospital of Jilin University, Changchun, China
| | - Yanhui He
- Department of Ophthalmology, The Second Hospital of Jilin University, Changchun, China
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3
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Oscillating shear stress mediates mesenchymal transdifferentiation of EPCs by the Kir2.1 channel. Heart Vessels 2020; 35:1473-1482. [PMID: 32449050 DOI: 10.1007/s00380-020-01625-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 05/15/2020] [Indexed: 12/16/2022]
Abstract
Although endothelial progenitor cells (EPCs) are considered to be an essential source of vascular endothelial repair, their bidirectional differentiation determines that they play a double-edged role in the restoration of endothelial injury. In this research, we investigated the effect of Kir2.1 ion channel on the transdifferentiation of endothelial progenitor cells (EPCs) under the oscillating shear stress (OSS) and the molecular mechanisms underlying the pathological vascular remodeling. EPCs were treated with OSS (± 3.5 dynes/cm2, 1 Hz) simulated with the parallel flow chamber system. The results have shown that OSS promoted the expression of α-SMA and SM22, markers of mesenchymal cells on EPCs. Moreover, OSS also increased expression of Kir2.1 in EPCs. The down-regulation of Kir2.1 reduced OSS-induced EPC mesenchymal transdifferentiation. The overexpression of Kir2.1 suppressed the angiogenic abilities of EPCs in vitro. In parallel, the overexpression of Kir2.1 on EPCs thickened the carotid tunica intima in rat carotid artery balloon injured model in vivo. Taken together, those data indicated that the OSS could facilitate the transdifferentiation of EPCs by increasing Kir2.1 expression. This study provides a novel insight into the pathogenesis of cardiovascular diseases and gives evidence for Kir2.1 as a potential therapeutic target.
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Liu P, Zhu W, Chen C, Yan B, Zhu L, Chen X, Peng C. The mechanisms of lysophosphatidylcholine in the development of diseases. Life Sci 2020; 247:117443. [DOI: 10.1016/j.lfs.2020.117443] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/11/2020] [Accepted: 02/17/2020] [Indexed: 02/07/2023]
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Law SH, Chan ML, Marathe GK, Parveen F, Chen CH, Ke LY. An Updated Review of Lysophosphatidylcholine Metabolism in Human Diseases. Int J Mol Sci 2019; 20:ijms20051149. [PMID: 30845751 PMCID: PMC6429061 DOI: 10.3390/ijms20051149] [Citation(s) in RCA: 385] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 02/27/2019] [Accepted: 02/28/2019] [Indexed: 12/12/2022] Open
Abstract
Lysophosphatidylcholine (LPC) is increasingly recognized as a key marker/factor positively associated with cardiovascular and neurodegenerative diseases. However, findings from recent clinical lipidomic studies of LPC have been controversial. A key issue is the complexity of the enzymatic cascade involved in LPC metabolism. Here, we address the coordination of these enzymes and the derangement that may disrupt LPC homeostasis, leading to metabolic disorders. LPC is mainly derived from the turnover of phosphatidylcholine (PC) in the circulation by phospholipase A2 (PLA2). In the presence of Acyl-CoA, lysophosphatidylcholine acyltransferase (LPCAT) converts LPC to PC, which rapidly gets recycled by the Lands cycle. However, overexpression or enhanced activity of PLA2 increases the LPC content in modified low-density lipoprotein (LDL) and oxidized LDL, which play significant roles in the development of atherosclerotic plaques and endothelial dysfunction. The intracellular enzyme LPCAT cannot directly remove LPC from circulation. Hydrolysis of LPC by autotaxin, an enzyme with lysophospholipase D activity, generates lysophosphatidic acid, which is highly associated with cancers. Although enzymes with lysophospholipase A1 activity could theoretically degrade LPC into harmless metabolites, they have not been found in the circulation. In conclusion, understanding enzyme kinetics and LPC metabolism may help identify novel therapeutic targets in LPC-associated diseases.
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Affiliation(s)
- Shi-Hui Law
- Department of Medical Laboratory Science and Biotechnology, College of Health Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Mei-Lin Chan
- Center for Lipid Biosciences, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
- Division of Thoracic Surgery, Department of Surgery, MacKay Memorial Hospital, MacKay Medical College, Taipei 10449, Taiwan.
| | - Gopal K Marathe
- Department of Studies in Biochemistry, Manasagangothri, University of Mysore, Mysore-570006, India.
| | - Farzana Parveen
- Department of Medical Laboratory Science and Biotechnology, College of Health Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Chu-Huang Chen
- Center for Lipid Biosciences, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
- Lipid Science and Aging Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Vascular and Medicinal Research, Texas Heart Institute, Houston, TX 77030, USA.
| | - Liang-Yin Ke
- Department of Medical Laboratory Science and Biotechnology, College of Health Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Center for Lipid Biosciences, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
- Lipid Science and Aging Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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Takayama T, Hiro T, Yoda S, Fukamachi D, Haruta H, Kogo T, Mineki T, Murata H, Oshima T, Hirayama A. Effect of Aggressive lipid-lowering treatment with Rosuvastatin on vascular endoTHelium function: evaluation of vascular endothelium function (EARTH study). Heart Vessels 2017; 33:590-594. [PMID: 29209775 DOI: 10.1007/s00380-017-1094-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 12/01/2017] [Indexed: 11/25/2022]
Abstract
Vascular endothelial dysfunction plays an important role in the process of atherosclerosis up to the final stage of plaque rupture. Vascular endothelial dysfunction is reversible, and can be recovered by medications and life-style changes. Improvement in endothelial function may reduce cardiovascular events and improve long-term prognosis. A total of 50 patients with stable angina and dyslipidemia were enrolled, including patients who had not received prior treatment with statins and had serum LDL-C levels ≥ 100 mg/dL, and patients who had previously received statin treatment. All agreed to register regardless of their LDL-C level. Rosuvastatin was initially administered at a dose of 2.5 mg and appropriately titrated up to the maximum dose of 20 mg or until LDL-C levels lower than 80 mg/dL were achieved, for 24 weeks. Endothelial function was assessed by the reactive hyperemia peripheral arterial tonometry (RH-PAT) index in the radial artery by Endo-PAT® 2000 (Endo-PAT®2000, software version 3.0.4, Itamar Medical Ltd., Caesarea, Israel). RH-PAT data were digitally analyzed online by Endo-PAT®2000 at baseline and at 24 weeks. LDL-C and MDA-LDL-C decreased from 112.6 ± 23.3 to 85.5 ± 20.2 mg/dL and from 135.1 ± 36.4 to 113.9 ± 23.5 mg/dL respectively (p < 0.0001). However, HDL-C, hs-CRP and TG did not change significantly after treatment. RH-PAT index levels significantly improved, from 1.60 ± 0.31 to 1.77 ± 0.57 (p = 0.04) after treatment, and the percent change of the RH-PAT index was 12.8 ± 36.9%. Results of multivariate analysis show that serum LDL-C levels over 24 weeks did not act as a predictor of improvement of the RH-PAT index. However, HbA1c at baseline was an independent predictor which influenced the 24-week RH-PAT index level. The RH-PAT index of patients with high HbA1c at baseline did not improve after administration of rosuvastatin but it did improve in patients with low HbA1c at baseline. Aggressive lowering of LDL-C with rosuvastatin significantly improved the RH-PAT index, suggesting that it may improve endothelial function in patients with coronary artery disease.Clinical Trial Registration No: UMIN-CTR, UMIN000010040.
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Affiliation(s)
- Tadateru Takayama
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan.
| | - Takafumi Hiro
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Shunichi Yoda
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Daisuke Fukamachi
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Hironori Haruta
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Takaaki Kogo
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Takashi Mineki
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Hironobu Murata
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Toru Oshima
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Atsushi Hirayama
- Division of Cardiology, Department of Medicine, Nihon University School of Medicine, 30-1, Ohyaguchi-kamicho, Itabashi-ku, Tokyo, 173-8610, Japan
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Wang Y, Wang YL, Huang X, Yang Y, Zhao YJ, Wei CX, Zhao M. Ibutilide protects against cardiomyocytes injury via inhibiting endoplasmic reticulum and mitochondrial stress pathways. Heart Vessels 2016; 32:208-215. [PMID: 27639990 PMCID: PMC5288448 DOI: 10.1007/s00380-016-0891-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Accepted: 09/07/2016] [Indexed: 12/13/2022]
Abstract
Atrial fibrillation (AF) is a complex disease with multiple inter-relating causes culminating in rapid atrial activation and atrial structural remodeling. The contribution of endoplasmic reticulum and mitochondria stress to AF has been highlighted. As the class III antiarrhythmic agent, ibutilide are widely used to AF. This study was designed to explore whether ibutilide could treat AF by inhibiting endoplasmic reticulum stress pathways and mitochondria stress. The neonatal rat cardiomyocytes were isolated and exposed to H2O2, ibutilide was add to the culture medium 12 h. Then the cell viability, oxidative stress levels and apoptotic rate were analyzed. In addition, endoplasmic reticulum stress related protein (GRP78, GRP94, CHOP), mitochondria-dependent protein (Bax, Bcl-2) and caspase-3/9/12 were identified by real-time PCR and western blot analysis. In our results, remarkable decreased cell viability and oxidative stress levels were detected in cardiomyocytes after treating with H2O2. The apoptotic rate and the expression of proteins involved in mitochondrial stress and endoplasmic reticulum stress pathways increased. While ibutilide significantly inhibited these changes. These data suggested that ibutilide serves a protective role against H2O2-induced apoptosis of neonatal rat cardiomyocytes, and the mechanism is related to suppression of mitochondrial stress and endoplasmic reticulum stress.
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Affiliation(s)
- Yu Wang
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, No. 22 Holin He Street, Tongliao, Inner Mongolia, 028002, People's Republic of China
| | - Yi-Li Wang
- Affiliated Hospital of Inner Mongolia University for Nationalities, No. 1472 Holin He Street, Tongliao, Inner Mongolia, 028002, People's Republic of China
| | - Xia Huang
- Affiliated Hospital of Inner Mongolia University for Nationalities, No. 1472 Holin He Street, Tongliao, Inner Mongolia, 028002, People's Republic of China
| | - Yang Yang
- Affiliated Hospital of Inner Mongolia University for Nationalities, No. 1472 Holin He Street, Tongliao, Inner Mongolia, 028002, People's Republic of China
| | - Ya-Jun Zhao
- Affiliated Hospital of Inner Mongolia University for Nationalities, No. 1472 Holin He Street, Tongliao, Inner Mongolia, 028002, People's Republic of China
| | - Cheng-Xi Wei
- Medicinal Chemistry and Pharmacology Institute, Inner Mongolia University for the Nationalities, No. 22 Holin He Street, Tongliao, Inner Mongolia, 028002, People's Republic of China.
| | - Ming Zhao
- Affiliated Hospital of Inner Mongolia University for Nationalities, No. 1472 Holin He Street, Tongliao, Inner Mongolia, 028002, People's Republic of China.
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Choi EY, Lee H, Woo JS, Jang HH, Hwang SJ, Kim HS, Kim WS, Kim YS, Choue R, Cha YJ, Yim JE, Kim W. Effect of onion peel extract on endothelial function and endothelial progenitor cells in overweight and obese individuals. Nutrition 2016; 31:1131-5. [PMID: 26233871 DOI: 10.1016/j.nut.2015.04.020] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Revised: 02/20/2015] [Accepted: 04/22/2015] [Indexed: 11/25/2022]
Abstract
OBJECTIVES Acute or chronic intake of polyphenol-rich foods has been reported to improve endothelial function. Quercetin, found abundantly in onion, is a potent antioxidant flavonoid. The aim of this study was to investigate whether consumption of onion peel extract (OPE) improves endothelial function in healthy overweight and obese individuals. METHODS This was a randomized double-blind, placebo-controlled study. Seventy-two healthy overweight and obese participants were randomly assigned to receive a red, soft capsule of OPE (100 mg quercetin/d, 50 mg quercetin twice daily; n = 36 participants) or an identical placebo capsule (n = 36) for 12 wk. Endothelial function, defined by flow-mediated dilation (FMD), circulating endothelial progenitor cells (EPCs) by flow cytometry, and laboratory test were determined at baseline and after treatment. RESULTS Baseline characteristics and laboratory findings did not significantly differ between the two groups. Compared with baseline values, the OPE group showed significantly improved FMD at 12 wk (from 12.5 ± 5.2 to 15.2 ± 6.1; P = 0.002), whereas the placebo group showed no difference. Nitroglycerin-mediated dilation did not change in either group. EPC counts (44.2 ± 25.6 versus 52.3 ± 18.6; P = 0.005) and the percentage of EPCs were significantly increased in the OPE group. When FMD was divided into quartiles, rate of patients with endothelial dysfunction defined as lowest quartile (cutoff value, 8.6%) of FMD improved from 26% to 9% by OPE. CONCLUSION Medium-term administration of OPE an improvement in FMD and circulating EPCs.
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Affiliation(s)
- Eun-Yong Choi
- Division of Cardiology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hansongyi Lee
- Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 447-701, Republic of Korea; Research Institute of Medical Nutrition, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Jong Shin Woo
- Division of Cardiology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hyun Hee Jang
- Division of Cardiology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Seung Joon Hwang
- Division of Cardiology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Hyun Soo Kim
- Division of Cardiology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Woo-Sik Kim
- Division of Cardiology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Young-Seol Kim
- Division of Endocrinology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Ryowon Choue
- Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Yongin 447-701, Republic of Korea; Research Institute of Medical Nutrition, Kyung Hee University, Seoul 130-701, Republic of Korea
| | - Yong-Jun Cha
- Department of Food and Nutrition, Changwon National University, Changwon, Republic of Korea
| | - Jung-Eun Yim
- Department of Food and Nutrition, Changwon National University, Changwon, Republic of Korea
| | - Weon Kim
- Division of Cardiology, Department of Internal Medicine, Kyung Hee University College of Medicine, Kyung Hee University, Seoul, Republic of Korea.
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Zhang W, Huo Y, Wang X, Jia Y, Su L, Wang C, Li Y, Yang Y, Liu Y. Decellularized ovine arteries as biomatrix scaffold support endothelial of mesenchymal stem cells. Heart Vessels 2016; 31:1874-1881. [DOI: 10.1007/s00380-016-0834-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 04/08/2016] [Indexed: 12/20/2022]
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Lee S, Kim W, Park J, Jang HH, Lee SM, Woo JS, Kim HS, Lee KH, Kwon YJ, Lee U, Kim JB, Kim WS, Kim KS. Effects of electroacupuncture on endothelial function and circulating endothelial progenitor cells in patients with cerebral infarction. Clin Exp Pharmacol Physiol 2015; 42:822-7. [DOI: 10.1111/1440-1681.12413] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Revised: 04/12/2015] [Accepted: 04/20/2015] [Indexed: 01/24/2023]
Affiliation(s)
- Sanghoon Lee
- Department of Acupuncture and Moxibustion; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - Weon Kim
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
| | - Jimin Park
- Department of Acupuncture and Moxibustion; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - Hyun Hee Jang
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
| | - Seung Min Lee
- Department of Acupuncture and Moxibustion; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - Jong Shin Woo
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
| | - Hyun Soo Kim
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
| | - Kyung Hye Lee
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
| | - You-Jung Kwon
- Department of Acupuncture and Moxibustion; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - Ungin Lee
- Department of Acupuncture and Moxibustion; College of Korean Medicine; Kyung Hee University; Seoul Korea
| | - Jin Bae Kim
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
| | - Woo Shik Kim
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
| | - Kwon Sam Kim
- Division of Cardiology; Department of Internal Medicine; Kyung Hee University Hospital; Seoul Korea
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Wan C, Chen Y, Yin P, Han D, Xu X, He S, Liu M, Hou X, Liu F, Xu J. Transport stress induces apoptosis in rat myocardial tissue via activation of the mitogen-activated protein kinase signaling pathways. Heart Vessels 2014; 31:212-21. [PMID: 25448624 DOI: 10.1007/s00380-014-0607-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/21/2014] [Indexed: 11/25/2022]
Abstract
The present study aimed to elucidate the mechanism of myocardial damage induced by simulated transport stress. Sprague-Dawley rats were subjected to 35 °C and 60 rpm (0.1×g rcf) on a constant temperature shaker. The blood samples were prepared for detection of epinephrine (E), norepinephrine (NE), atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP) and serum cardiac troponin T (cTNT); myocardium samples were prepared for morphological examination and signaling protein quantitative. The result showed that plasma norepinephrine (NE) and epinephrine (E) concentrations increased in all stressed groups (P < 0.01). Levels of serum cardiac troponin T (cTNT) were elevated in both the S2d (P < 0.05) and S3d groups (P < 0.01). The concentration of plasma BNP was increased significantly in S3d group (P < 0.05); the difference in ANP was not remarkable. Morphological observation demonstrated obvious microstructure and ultrastructure damage after simulated transport stress. There was also a significant increase in the number of TUNEL-positive cardiomyocytes in stressed hearts. Western blot analysis found that the mitogen-activated protein kinase (MAPK) pathways were activated by strengthening phosphorylation of ASK-1, JNK, P38 and ERK in rat myocardial tissue after simulated transport stress (P < 0.05, P < 0.01). In addition, the ratio of pro-apoptotic Bax and anti-apoptotic Bcl-2 proteins was increased in stressed rats (P < 0.01), and the amount of cleaved-caspase3 increased in all stressed rats (P < 0.01). The expression of cleaved-caspase9 protein was also elevated in S2d and S3d groups (P < 0.01). Consequently simulated transport stress induced obvious myocardial damage, which may be attributed to the activation of caspase 9-mediated mitochondrial apoptotic pathway and MAPK pathways.
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Affiliation(s)
- Changrong Wan
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Yuping Chen
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Peng Yin
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Dandan Han
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Xiaolong Xu
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Shasha He
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Mingjiang Liu
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China
| | - Xiaolin Hou
- College of Animal Science and Technology, Beijing University of Agriculture (BUA), No. 7 Beinong Road, Beijing, 102206, People's Republic of China
| | - Fenghua Liu
- College of Animal Science and Technology, Beijing University of Agriculture (BUA), No. 7 Beinong Road, Beijing, 102206, People's Republic of China.
| | - Jianqin Xu
- CAU-BUA TCVM Teaching and Researching Team, College of Veterinary Medicine, China Agricultural University (CAU), No. 2 West Yuanmingyuan Road, Beijing, 100193, People's Republic of China.
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Oxidation-induced loss of the ability of HDL to counteract the inhibitory effect of oxidized LDL on vasorelaxation. Heart Vessels 2014; 30:845-9. [PMID: 25031153 DOI: 10.1007/s00380-014-0543-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 06/27/2014] [Indexed: 02/02/2023]
Abstract
Several current diseases are associated with an increase in the oxidation of HDL, which is likely to impair their functionality. Our aim was to identify whether oxidation could change the protective effect of HDL against the deleterious effect on vasoreactivity induced by oxidative stress. HDL from healthy subjects were oxidized in vitro by Cu(2+), and the ability of oxidized HDL to counteract the inhibitory effect of oxidized LDL on acetylcholine-induced vasodilation was tested on isolated rabbit aorta rings. Oxidation of HDL was evidenced by the increase in the 7-oxysterols/cholesterol ratio (3.20 ± 1.12 vs 0.02 ± 0.01 % in native HDL, p < 0.05). Oxidized LDL inhibited endothelium-dependent vasodilation (E max = 50.2 ± 5.0 vs 92.5 ± 1.7 % for incubation in Kreb's buffer, p < 0.05) and native HDL counteracted this inhibition (E max = 72.4 ± 4.8 vs 50.2 ± 5.0 % p < 0.05). At the opposite, oxidized HDL had no effect on oxidized LDL-induced inhibition on endothelium-dependent vasorelaxation (E max = 53.7 ± 4.8 vs 50.2 ± 5.0 %, NS). HDL oxidation is associated with a decreased ability of HDL to remove 7-oxysterols from oxidized LDL. In conclusion, these results show that oxidation of HDL induces the loss of their protective effect against endothelial dysfunction, which could promote atherosclerosis in diseases associated with increased oxidative stress.
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