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myocardial endothelial cell and angiogenesis

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https://www.readbyqxmd.com/read/28062497/increased-proangiogenic-activity-of-mobilized-cd34-progenitor-cells-of-patients-with-acute-st-segment-elevation-myocardial-infarction-role-of-differential-micro-rna-378-expression
#1
Christian Templin, Julia Volkmann, Maximilian Y Emmert, Pavani Mocharla, Maja Müller, Nicolle Kraenkel, Jelena R Ghadri, Martin Meyer, Beata Styp-Rekowska, Sylvie Briand, Roland Klingenberg, Milosz Jaguszewski, Christian M Matter, Valentin Djonov, Francois Mach, Stephan Windecker, Simon P Hoerstrup, Thomas Thum, Thomas F Lüscher, Ulf Landmesser
OBJECTIVE: Proangiogenic effects of mobilized bone marrow-derived stem/progenitor cells are essential for cardiac repair after myocardial infarction. Micro-RNAs (miRNA/miR) are key regulators of angiogenesis. We investigated the differential regulation of angio-miRs, that is, miRNAs regulating neovascularization, in mobilized CD34(+) progenitor cells obtained from patients with an acute ST-segment-elevation myocardial infarction (STEMI) as compared with those with stable coronary artery disease or healthy subjects...
December 29, 2016: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28004242/targeted-myocardial-delivery-of-gdf11-gene-rejuvenates-the-aged-mouse-heart-and-enhances-myocardial-regeneration-after-ischemia-reperfusion-injury
#2
Guo-Qing Du, Zheng-Bo Shao, Jie Wu, Wen-Juan Yin, Shu-Hong Li, Jun Wu, Richard D Weisel, Jia-Wei Tian, Ren-Ke Li
Ischemic cardiac injury is the main contributor to heart failure, and the regenerative capacity of intrinsic stem cells plays an important role in tissue repair after injury. However, stem cells in aged individuals have reduced regenerative potential and aged tissues lack the capacity to renew. Growth differentiation factor 11 (GDF11), from the activin-transforming growth factor β superfamily, has been shown to promote stem cell activity and rejuvenation. We carried out non-invasive targeted delivery of the GDF11 gene to the heart using ultrasound-targeted microbubble destruction (UTMD) and cationic microbubble (CMB) to investigate the ability of GDF11 to rejuvenate the aged heart and improve tissue regeneration after injury...
January 2017: Basic Research in Cardiology
https://www.readbyqxmd.com/read/27995765/shockwaves-prevent-from-heart-failure-after-acute-myocardial-ischaemia-via-rna-protein-complexes
#3
Can Tepeköylü, Uwe Primessnig, Leo Pölzl, Michael Graber, Daniela Lobenwein, Felix Nägele, Elke Kirchmair, Elisabeth Pechriggl, Michael Grimm, Johannes Holfeld
Shock wave treatment (SWT) was shown to induce regeneration of ischaemic myocardium via Toll-like receptor 3 (TLR3). The antimicrobial peptide LL37 gets released by mechanical stress and is known to form complexes with nucleic acids thus activating Toll-like receptors. We suggested that SWT in the acute setting prevents from the development of heart failure via RNA/protein release. Myocardial infarction in mice was induced followed by subsequent SWT. Heart function was assessed 4 weeks later via transthoracic echocardiography and pressure-volume measurements...
December 20, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27995104/myocardial-capillary-density-after-neuropeptide-y-antagonist-administration-in-normal-and-high-fat-diet-c57bl6-mice
#4
Masoud Alasvand, Shaghayegh Haghjooy Javanmard, Bahman Rashidi, Majid Khazaei
BACKGROUND: Neuropeptide Y (NPY), a 36 amino acid peptide, has several effects on cardiovascular system. It is demonstrated that the angiogenic activity of NPY is similar to fibroblast growth factor and vascular endothelial growth factor (VEGF). The aim of this study was to evaluate the effect of systemic administration of antagonist of NPY receptor (BIIE0742) on coronary angiogenesis in normal and diet-induced obese animals. MATERIALS AND METHODS: Twenty-four male mice were received high-fat diet (HFD) or normal diet (ND) for 14 weeks...
2016: Advanced Biomedical Research
https://www.readbyqxmd.com/read/27941320/necroptosis-induced-by-ad-hgf-activates-endogenous-c-kit-cardiac-stem-cells-and-promotes-cardiomyocyte-proliferation-and-angiogenesis-in-the-infarcted-aged-heart
#5
Jiabao Liu, Peng Wu, Hao Wang, Yunle Wang, Yingqiang Du, Weili Cheng, Zhihui Xu, Ningtian Zhou, Liansheng Wang, Zhijian Yang
BACKGROUND/AIMS: The discovery of c-kit+ cardiac stem cells (CSCs) provided us with new therapeutic targets to repair the damaged heart. However, the precise mechanisms regulating CSC proliferation and differentiation in the aged heart remained elusive. Necroptosis, a type of regulated cell death, has recently been shown to occur following myocardial infarction (MI); however, its effect on c-kit+ CSCs remains unknown. We investigated the effects of hepatocyte growth factor (HGF) and necroptosis on the proliferation and differentiation of endogenous c-kit+ CSCs in aged rat hearts following MI...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27878328/targeting-the-hedgehog-signaling-pathway-for-cardiac-repair-and-regeneration
#6
REVIEW
Y Wang, P Lu, D Zhao, J Sheng
The hedgehog (Hh) signaling pathway is involved in the angiogenesis and development of the coronary vasculature in the embryonic heart. Recently, the Hh signal pathway has emerged as an important regulator that can increase cardiomyocyte proliferation, inhibit cardiomyocyte death and apoptosis, recruit endothelial progenitor cell (EPCs) into sites of myocardial ischemia, and direct stem cells to differentiate into cardiac muscle lineage. Experimental studies have tried to target the Hh signaling pathway for cardiac repair and regeneration...
November 22, 2016: Herz
https://www.readbyqxmd.com/read/27844250/differential-response-of-human-cardiac-stem-cells-and-bone-marrow-mesenchymal-stem-cells-to-hypoxia-reoxygenation-injury
#7
Deepthi Sreerengam RajendranNair, Jayakumar Karunakaran, Renuka R Nair
Cardiosphere-derived cells (CDCs) and bone marrow mesenchymal stem cells (MSCs) are popularly used in stem cell therapy for myocardial regeneration. The cell type that survives and maintains stem cell characteristics in the adverse microenvironment following ischemia-reperfusion injury is presumed to be ideal for transplantation. The study was therefore aimed at identifying the cell type with relatively greater resistance to ischemia-reperfusion injury. CDCs were isolated from the right atrial appendage and MSCs from bone marrow of patients who underwent coronary artery bypass graft surgery...
November 14, 2016: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/27708252/effects-of-mir-21-on-cardiac-microvascular-endothelial-cells-after-acute-myocardial-infarction-in-rats-role-of-phosphatase-and-tensin-homolog-pten-vascular-endothelial-growth-factor-vegf-signal-pathway
#8
Feng Yang, Wenwei Liu, Xiaojuan Yan, Hanyun Zhou, Hongshen Zhang, Jianfei Liu, Ming Yu, Xiaoshan Zhu, Kezhong Ma
BACKGROUND This study investigated how miR-21 expression is reflected in acute myocardial infarction and explored the role of miR-21 and the PTEN/VEGF signaling pathway in cardiac microvascular endothelial cells. MATERIAL AND METHODS We used an in vivo LAD rat model to simulate acute myocardial infarction. MiR-21 mimics and miR-21 inhibitors were injected and transfected into model rats in order to alter miR-21 expression. Cardiac functions were evaluated using echocardiographic measurement, ELISA, and Masson staining...
October 6, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27689811/role-of-mir-199b-5p-in-regulating-angiogenesis-in-mouse-myocardial-microvascular-endothelial-cells-through-hsf1-vegf-pathway
#9
Peizhao Du, Fangjie Dai, Yaowei Chang, Chunyan Wei, Jing Yan, Jiming Li, Xuebo Liu
Our study explored effects of miR-199b-5p on angiogenesis in mouse myocardial microvascular endothelial cells (MMVECs) and the involved working mechanisms. We applied explant culture to incubate C57/BL6 mouse MMVECs. Lipofection was used to transfect miR-199b-5p mimic, miR-199b-5p inhibitor and miR-199b-5p scramble respectively. MMVECs were divided into miR-199b-5p up-regulation, miR-199b-5p down-regulation and control groups based on above sequence. Expressions of miR-199b-5p, heat shock factor protein 1 (HSF1) mRNA were assessed by real-time quantitative polymerase chain reaction (RT-QPCR)...
October 2016: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/27681821/mesenchymal-stem-cells-and-vascular-regeneration
#10
Wenduo Gu, Xuechong Hong, Claire Potter, Aijuan Qu, Qingbo Xu
In recent years mesenchymal stem cells (MSCs) have emerged as a promising therapeutic cell type in regenerative medicine. They hold great promise for treating cardiovascular diseases, such as myocardial infarction and limb ischemia. MSCs may be utilized in both cell-based therapy and vascular graft engineering to restore vascular function, thereby providing therapeutic benefits to patients. The efficacy of MSCs lies in their multipotent differentiation ability towards vascular smooth muscle cells, endothelial cells and other cell types, as well as their capacity to secrete various trophic factors, which are potent in promoting angiogenesis, inhibiting apoptosis and modulating immunoreaction...
September 28, 2016: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/27659217/exosomes-derived-from-akt-modified-human-umbilical-cord-mesenchymal-stem-cells-improve-cardiac-regeneration-and-promote-angiogenesis-via-activating-platelet-derived-growth-factor-d
#11
Jie Ma, Yuanyuan Zhao, Li Sun, Xiaochun Sun, Xiaosu Zhao, Xiaoxian Sun, Hui Qian, Wenrong Xu, Wei Zhu
: : We have previously demonstrated the cardioprotective effects of exosomes derived from mesenchymal stem cells (MSCs). It is well-known that the activation of Akt is involved in stem cell-induced cardioprotection. In the present study, we investigated whether exosomes released from Akt-overexpressing MSCs showed a beneficial effect on cardioprotection and angiogenesis. MSCs were collected from human umbilical cord (hucMSCs), and Akt was transfected into hucMSCs (Akt-hucMSCs) by using an adenovirus transfection system...
September 22, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27619839/vegf-loaded-microsphere-patch-for-local-protein-delivery-to-the-ischemic-heart
#12
Jonathan Rodness, Anton Mihic, Yasuo Miyagi, Jun Wu, Richard D Weisel, Ren-Ke Li
BACKGROUND: Revascularization of the heart after myocardial infarction (MI) using growth factors delivered by hydrogel-based microspheres represents a promising therapeutic approach for cardiac regeneration. Microspheres have tuneable degradation properties and support the prolonged release of soluble factors. Cardiac patches provide mechanical restraint, preventing dilatation associated with ventricular remodelling. METHODS: We combined these approaches and produced a compacted calcium-alginate microsphere patch, restrained by a chitosan sheet, to deliver vascular endothelial growth factor (VEGF) to the heart after myocardial injury in rats...
November 2016: Acta Biomaterialia
https://www.readbyqxmd.com/read/27612811/fabrication-of-hydrogel-based-nanocomposite-scaffold-containing-bioactive-glass-nanoparticles-for-myocardial-tissue-engineering
#13
Zahra Barabadi, Mahmoud Azami, Esmaeel Sharifi, Roya Karimi, Nasrin Lotfibakhshaiesh, Reza Roozafzoon, Mohammad Taghi Joghataei, Jafar Ai
Selecting suitable cell sources and angiogenesis induction are two important issues in myocardial tissue engineering. Human endometrial stromal cells (EnSCs) have been introduced as an abundant and easily available resource in regenerative medicine. Bioactive glass is an agent that induces angiogenesis and has been studied in some experiments. The aim of this study was to investigate in vitro differentiation capacity of endometrial stem cells into cardiomyocyte lineage and to evaluate capability of bioactive glass nanoparticles toward EnSCs differentiation into endothelial lineage and angiogenesis on hydrogel scaffold...
December 1, 2016: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27574331/enhanced-cardioprotection-by-human-endometrium-mesenchymal-stem-cells-driven-by-exosomal-microrna-21
#14
Kan Wang, Zhi Jiang, Keith A Webster, Jinghai Chen, Hengxun Hu, Yu Zhou, Jing Zhao, Lihan Wang, Yingchao Wang, Zhiwei Zhong, Cheng Ni, Qingju Li, Charlie Xiang, Ling Zhang, Rongrong Wu, Wei Zhu, Hong Yu, Xinyang Hu, Jian'an Wang
: : Our group recently reported positive therapeutic benefit of human endometrium-derived mesenchymal stem cells (EnMSCs) delivered to infarcted rat myocardium, an effect that correlated with enhanced secretion of protective cytokines and growth factors compared with parallel cultures of human bone marrow MSCs (BMMSCs). To define more precisely the molecular mechanisms of EnMSC therapy, in the present study, we assessed in parallel the paracrine and therapeutic properties of MSCs derived from endometrium, bone marrow, and adipose tissues in a rat model of myocardial infarction (MI)...
August 29, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27538588/inhibition-of-microrna-495-enhances-therapeutic-angiogenesis-of-human-induced-pluripotent-stem-cells
#15
Jialiang Liang, Wei Huang, Wenfeng Cai, Lei Wang, Linlin Guo, Christian Paul, Xi-Yong Yu, Yigang Wang
Therapeutic angiogenesis has emerged as a promising strategy to regenerate the damaged blood vessels resulting from ischemic diseases such as myocardial infarction (MI). However, the functional integration of implanted endothelial cells (ECs) in infarcted heart remains challenging. We herein develop an EC generation approach by inhibiting microRNA-495 (miR-495) in human induced pluripotent stem cells (hiPSCs) and assess the angiogenic potential for MI treatment. The anti-angiogenic miR-495 belonging to Dlk1-Dio3 miR cluster was identified through expression profiling and computational analysis...
August 19, 2016: Stem Cells
https://www.readbyqxmd.com/read/27513923/angiogenic-factor-aggf1-activates-autophagy-with-an-essential-role-in-therapeutic-angiogenesis-for-heart-disease
#16
Qiulun Lu, Yufeng Yao, Zhenkun Hu, Changqing Hu, Qixue Song, Jian Ye, Chengqi Xu, Annabel Z Wang, Qiuyun Chen, Qing Kenneth Wang
AGGF1 is an angiogenic factor with therapeutic potential to treat coronary artery disease (CAD) and myocardial infarction (MI). However, the underlying mechanism for AGGF1-mediated therapeutic angiogenesis is unknown. Here, we show for the first time that AGGF1 activates autophagy, a housekeeping catabolic cellular process, in endothelial cells (ECs), HL1, H9C2, and vascular smooth muscle cells. Studies with Atg5 small interfering RNA (siRNA) and the autophagy inhibitors bafilomycin A1 (Baf) and chloroquine demonstrate that autophagy is required for AGGF1-mediated EC proliferation, migration, capillary tube formation, and aortic ring-based angiogenesis...
August 2016: PLoS Biology
https://www.readbyqxmd.com/read/27484974/cross-talk-between-the-dipeptidyl-peptidase-4-and-stromal-cell-derived-factor-1-in-stem-cell-homing-and-myocardial-repair-potential-impact-of-dipeptidyl-peptidase-4-inhibitors
#17
Marko Anderluh, Gordana Kocic, Katarina Tomovic, Radivoj Kocic, Marina Deljanin-Ilic, Andrija Smelcerovic
Dipeptidyl peptidase-4 (DPP-4), glycyl-prolyl-naphthylamidase, is a serine protease that catalyzes the hydrolysis of various proline-containing polypeptides. It is involved in the inactivation of glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), having in this way a profound influence on glucose metabolism. During organ damage, stromal and endothelial cells produce a chemokine known as stromal cell-derived factor-1 (SDF-1), a powerful chemoattractant of stem/progenitor cells...
November 2016: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/27450023/hypoxia-inducible-factor-1%C3%AE-vascular-endothelial-growth-factor-inducible-nitric-oxide-synthase-and-endothelin-1-expression-correlates-with-angiogenesis-in-congenital-heart-disease
#18
Hsin-Ling Yin, Chi-Wen Luo, Zen-Kong Dai, Kai-Ping Shaw, Chee-Yin Chai, Chun-Chieh Wu
In Taiwan, the average prevalence of congenital heart disease (CHD) is 13.08/1000 live births. Most children with CHD die before the age of 5 years; therefore, identifying treatment methods to extend the life of CHD patients is an important issue in clinical practice. The objective of this study is to evaluate the roles of hypoxia-inducible factor-1α (HIF-1α), vascular endothelial growth factor (VEGF), inducible nitric oxide synthase (iNOS), endothelin-1 (ET-1), and CD34 in CHD autopsy cases in comparison with autopsy cases without CHD...
July 2016: Kaohsiung Journal of Medical Sciences
https://www.readbyqxmd.com/read/27444229/testosterone-and-voluntary-exercise-promote-angiogenesis-in-hearts-of-rats-with-diabetes-by-enhancing-expression-of-vegf-a-and-sdf-1a
#19
Leila Chodari, Mustafa Mohammadi, Vajiheh Ghorbanzadeh, Hassan Dariushnejad, Gisou Mohaddes
OBJECTIVES: Impaired angiogenesis in cardiac tissue is a major complication of diabetes. This study was aimed to evaluate the effects of testosterone and voluntary exercise on vascular endothelial growth factor-A (VEGF-A), stromal cell-derived factor 1a (SDF-1a) and myocardial capillary density in heart of rats with diabetes. METHODS: Type 1 diabetes was induced by intraperitoneal injection of 55 mg/kg of streptozotocin in 80 male Wistar rats. After 42 days of treatment with testosterone (2 mg/kg/day) or voluntary exercise alone or in combination, angiogenesis was determined in the hearts by immunostaining for PECAM-1/CD31...
October 2016: Canadian Journal of Diabetes
https://www.readbyqxmd.com/read/27444191/t3-enhances-ang2-in-rat-aorta-in-myocardial-i-r-comparison-with-left-ventricle
#20
Laura Sabatino, Claudia Kusmic, Giuseppina Nicolini, Rosario Amato, Giovanni Casini, Giorgio Iervasi, Silvana Balzan
Angiogenesis is important for recovery after tissue damage in myocardial ischemia/reperfusion, and tri-iodothyronine (T3) has documented effects on angiogenesis. The angiopoietins 1/2 and tyrosine kinase receptor represent an essential system in angiogenesis controlling endothelial cell survival and vascular maturation. Recently, in a 3-day ischemia/reperfusion rat model, the infusion of a low dose of T3 improved the post-ischemic recovery of cardiac function.Adopting this model, our study aimed to investigate the effects of T3 on the capillary index and the expression of angiogenic genes as the angiopoietins 1/2 and tyrosine kinase receptor system, in the thoracic aorta and in the left ventricle...
October 2016: Journal of Molecular Endocrinology
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