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myocardial endothelial cell and angiogenesis

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https://www.readbyqxmd.com/read/28315330/microrna-29-regulates-myocardial-microvascular-endothelial-cells-proliferation-and-migration-in-association-with-igf1-in-type-2-diabetes
#1
Zhenjie Li, Qingcai Yue, Haiying Peng
BACKGROUND: In our study, we investigated the expression and function of microRNA-29 in myocardial microvascular endothelial cells (MMEVC) in type 2 diabetic Goto-Kakizaki (GK) rats. METHODS: MiR-29 gene expression was compared, by qRT-PCR between diabetic GK rat MMEVC and non-diabetic Wistar rat MMEVC. MiR-29 was downregulated in GK MMEVC and its effect on angiogenic properties of proliferation and migration was examined. Potential downstream target gene of miR-29, insulin growth factor 1 (IGF1), was assessed by dual-luciferase reporter assay, qRT-PCR and western blot in GK MMEVC...
March 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28298297/angiogenic-mechanisms-of-human-cd34-stem-cell-exosomes-in-the-repair-of-ischemic-hindlimb
#2
Prabhu Mathiyalagan, Yaxuan Liang, David Kim, Sol Misener, Tina Thorne, Christine Kamide, Ekaterina Klyachko, Douglas W Losordo, Roger J Hajjar, Susmita Sahoo
Rationale: Paracrine secretions appear to mediate therapeutic effects of human CD34(+) stem cells locally transplanted in patients with myocardial and critical limb ischemia as well as in animal models. Earlier, we had discovered that paracrine secretion from human CD34(+) cells contains pro-angiogenic, membrane-bound nano-vesicles called exosomes (CD34Exo). Objective: Here, we investigated the mechanisms of CD34Exo-mediated ischemic tissue repair and therapeutic angiogenesis by studying their miRNA content and uptake...
March 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28287533/isolation-of-endothelial-progenitor-cells-from-healthy-volunteers-and-their-migratory-potential-influenced-by-serum-samples-after-cardiac-surgery
#3
Christoph Emontzpohl, David Simons, Sandra Kraemer, Andreas Goetzenich, Gernot Marx, Jürgen Bernhagen, Christian Stoppe
Endothelial progenitor cells (EPCs) are recruited from the bone marrow under pathological conditions like hypoxia and are crucially involved in the neovascularization of ischemic tissues. The origin, classification and characterization of EPCs are complex; notwithstanding, two prominent sub-types of EPCs have been established: so-called "early" EPCs (subsequently referred to as early-EPCs) and late-outgrowth EPCs (late-EPCs). They can be classified by biological properties as well as by their appearance during in vitro culture...
February 14, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28284103/a-vegf-delivery-system-targeting-mi-improves-angiogenesis-and-cardiac-function-based-on-the-tropism-of-mscs-and-layer-by-layer-self-assembly
#4
Ge Liu, Li Li, Da Huo, Yanzhao Li, Yangxiao Wu, Lingqing Zeng, Panke Cheng, Malcolm Xing, Wen Zeng, Chuhong Zhu
Myocardial infarction (MI) is a serious ischemic condition affecting many individuals around the world. Vascular endothelial growth factor (VEGF) is considered a promising factor for enhancing cardiac function by promoting angiogenesis. However, the lack of a suitable method of VEGF delivery to the MI area is a serious challenge. In this study, we screened a suitable delivery carrier with favorable biocompatibility that targeted the MI area using the strategy of an inherent structure derived from the body and that was based on characteristics of the MI...
March 2, 2017: Biomaterials
https://www.readbyqxmd.com/read/28261920/remote-physiological-ischemic-training-promotes-coronary-angiogenesis-via-molecular-and-cellular-mobilization-after-myocardial-ischemia
#5
Yu Zheng, Mingyue Xiao, Ling Li, Jianan Li, Jan D Reinhardt, Xiao Lu
AIM: This study was designed to explore the mechanism of physiological ischemic training (PIT) on remote limbs, with a special focus on the potential role of endothelial progenitor cells (EPCs), vascular endothelial growth factor (VEGF) and nitric oxide (NO) in local ischemic myocardium. METHOD: MI rabbit models were randomly assigned to sham-operated group (SO), training only group (TO), myocardial ischemia group (MI), PIT group, VEGF inhibitor group (VEGF-), NO inhibitor group (NO-), VEGF and NO inhibitor group (VEGF-/NO-), and EPC inhibitor group (EPC-)...
March 6, 2017: Cardiovascular Therapeutics
https://www.readbyqxmd.com/read/28259938/intermedin1%C3%A2-53-enhances-angiogenesis-and-attenuates-adverse-remodeling-following-myocardial-infarction-by-activating-amp%C3%A2-activated-protein-kinase
#6
Kankai Chen, Meiling Yan, Yongguang Li, Zhifeng Dong, Dong Huang, Jingbo Li, Meng Wei
Adverse ventricular remodeling is a maladaptive response to acute loss of myocardium and an important risk factor for heart failure following myocardial infarction (MI). Intermedin (IMD) is a novel member of the calcitonin/calcitonin gene‑related peptide family, which may possess potent cardioprotective properties. The aim of the present study was to determine whether IMD1‑53, a mature bioactive form of IMD, may promote therapeutic angiogenesis within the infarcted myocardium, therefore attenuating adverse ventricular remodeling post‑MI...
February 10, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28250059/netrin-1-restores-cell-injury-and-impaired-angiogenesis-in-vascular-endothelial-cells
#7
Ying Xing, Jingbo Lai, Xiangyang Liu, Nana Zhang, Jie Ming, Hengxin Liu, Xi Zhang
Diabetic foot ulceration (DFU) represents a common vascular complication of diabetes mellitus (DM) with high morbidity and disability resulting from amputation. Netrin-1 level was decreased in type 2 DM patients and has been identified as a protective regulator against diabetes-triggered myocardial infarction and nephropathy. Unfortunately, its role and molecular mechanism in DFU remain poorly elucidated. Here, netrin-1 levels were reduced in DM and DFU patients relative to healthy controls, with netrin-1 levels being lowest in DFU patients...
March 1, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/28249798/mesenchymal-stem-cells-derived-extracellular-vesicles-via-mir-210-improve-infarcted-cardiac-function-by-promotion-of-angiogenesis
#8
Na Wang, Caiyu Chen, Dezhong Yang, Qiao Liao, Hao Luo, Xinquan Wang, Faying Zhou, Xiaoli Yang, Jian Yang, Chunyu Zeng, Wei Eric Wang
Mesenchymal stem cells (MSCs) exert therapeutic effect on treating acute myocardial infarction. Recent evidence showed that paracrine function rather than direct differentiation predominately contributes to the beneficial effects of MSCs, but how the paracrine factors function are not fully elucidated. In the present study, we tested if extracellular vesicles (EVs) secreted by MSC promotes angiogenesis in infracted heart via microRNAs. Immunostaining of CD31 and matrigel plug assay were performed to detect angiogenesis in a mouse myocardial infarction (MI) model...
February 27, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28245882/development-of-a-surrogate-potency-assay-to-determine-the-angiogenic-activity-of-stempeucel%C3%A2-a-pooled-ex-vivo-expanded-allogeneic-human-bone-marrow-mesenchymal-stromal-cell-product
#9
Charan Thej, Balamurugan Ramadasse, Ankita Walvekar, Anish S Majumdar, Sudha Balasubramanian
BACKGROUND: Mesenchymal stromal cells (MSCs) have emerged as a more beneficial alternative to conventional therapy and may offer a potential cure for unmet medical needs. MSCs are known to possess strong immunomodulatory and anti-inflammatory properties. Moreover, they promote angiogenesis and tissue regeneration through the secretion of trophic factors. For these reasons, the past decade witnessed a sharp increase in the number of clinical trials conducted with stem cells for various vascular diseases requiring angiogenesis...
February 28, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28204828/tieg1-deficiency-confers-enhanced-myocardial-protection-in-the-infarcted-heart-by-mediating-the-pten-akt-signalling-pathway
#10
Mingqiu Cen, Pengfei Hu, Zhaobin Cai, Tianfu Fang, Jiancheng Zhang, Ming Lu
The transforming growth factor (TGF)-β-inducible early gene-1 (TIEG1) plays a crucial role in modulating cell apoptosis and proliferation in a number of diseases, including pancreatic cancer, leukaemia and osteoporosis. However, the functional role of TIEG1 in the heart has not been fully defined. In this study, we first investigated the role of TIEG1 in ischaemic heart disease. For in vitro experiments, cardiomyocytes were isolated from both TIEG1 knockout (KO) and wile-type (WT) mice, and the apoptotic ratios were evaluated after a 48‑h ischaemic insult...
March 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28186692/targeted-genome-engineering-to-control-vegf-expression-in-human-umbilical-cord-blood-derived-mesenchymal-stem-cells-potential-implications-for-the-treatment-of-myocardial-infarction
#11
Hyun-Min Cho, Pyung-Hwan Kim, Hyun-Kyung Chang, Yi-Ming Shen, Kwaku Bonsra, Byung-Jae Kang, Soo-Young Yum, Joo-Hyun Kim, So-Yeong Lee, Min-Cheol Choi, Hyongbum Henry Kim, Goo Jang, Je-Yoel Cho
Human umbilical cord blood-derived mesenchymal stem cells (hUCB-MSCs) exhibit potency for the regeneration of infarcted hearts. Vascular endothelial growth factor (VEGF) is capable of inducing angiogenesis and can boost stem cell-based therapeutic effects. However, high levels of VEGF can cause abnormal blood vessel growth and hemangiomas. Thus, a controllable system to induce therapeutic levels of VEGF is required for cell therapy. We generated an inducible VEGF-secreting stem cell (VEGF/hUCB-MSC) that controls the expression of VEGF and tested the therapeutic efficacy in rat myocardial infarction (MI) model to apply functional stem cells to MI...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28170176/exosomes-derived-from-akt-modified-human-umbilical-cord-mesenchymal-stem-cells-improve-cardiac-regeneration-and-promote-angiogenesis-via-activating-platelet-derived-growth-factor-d
#12
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...
January 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28167285/nanoparticular-delivery-system-for-a-secretoneurin-derivative-induces-angiogenesis-in-a-hind-limb-ischemia-model
#13
Karin Albrecht-Schgoer, Jan Barthelmes, Wilfried Schgoer, Markus Theurl, Isabelle Nardin, Daniela Lener, Clemens Gutmann, Sarah Dünnhaupt, Andreas Bernkop-Schnürch, Rudolf Kirchmair
Common therapeutic strategies for peripheral arterial disease often fail to re-establish sufficient blood flow within legs and feet of patients for avoiding critical limb ischemia, what is characterized by a substantial risk for amputation. The neuropeptide secretoneurin induces angiogenesis in models of limb and myocardial ischemia and might be a promising tool in the treatment of patients without the option of revascularization therapy for severe ischemia. Within this manuscript, the biologically active part of secretoneurin was identified, modified by induction of a cysteine residue to gain higher stability against enzymatic degradation and further packed into S-protected thiolated chitosan nanoparticles, which enable intra-muscular application of secretoneurin...
February 3, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28154007/loss-of-endothelial-cxcr7-impairs-vascular-homeostasis-and-cardiac-remodeling-after-myocardial-infarction-implications-for-cardiovascular-drug-discovery
#14
Huifeng Hao, Sheng Hu, Hong Chen, Dawei Bu, Liyuan Zhu, Chuansheng Xu, Fei Chu, Xingyu Huo, Yue Tang, Xiaogang Sun, Bisen Ding, Depei Liu, Shengshou Hu, Miao Wang
BACKGROUND: -Genome-wide association studies identified the association of the CXCL12 genetic locus (which encodes the chemokine CXCL12, also known as stromal cell-derived factor 1) with coronary artery disease (CAD) and myocardial infarction (MI). Unlike CXCR4, the classical receptor for CXCL12, the function of CXCR7 (the most recently identified receptor) in vascular responses to injury and in MI remains unclear. METHODS: -Tissue expression of CXCR7 was examined in arteries from mice and humans...
February 2, 2017: Circulation
https://www.readbyqxmd.com/read/28122306/hydroxysafflor-yellow-a-promotes-neovascularization-and-cardiac-function-recovery-through-ho-1-vegf-a-sdf-1%C3%AE-cascade
#15
Guo Wei, Ying Yin, Jialin Duan, Chao Guo, Yanrong Zhu, Yanhua Wang, Miaomiao Xi, Aidong Wen
AIM: The present study was to investigate the proangiogenic and cardioprotective effects of hydroxysafflor yellow A (HSYA) against myocardial infarction (MI) injury and the underlying mechanisms. METHODS: MI model was induced by ligation of the left coronary artery in normal and heme oxygenase-1 (HO-1) knockout mice and the ones receiving vascular endothelial growth factor-A (VEGF-A) or stromal cell-derived factor-1α (SDF-1α) antagonists. They were treated with three doses or single dose of HSYA for 28days...
April 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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-microrna-378-expression
#16
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. MicroRNAs (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...
February 2017: 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
#17
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
#18
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...
April 2017: 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
#19
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
#20
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
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