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Ischemia angiogenesis

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https://www.readbyqxmd.com/read/29777578/sirt3-deficiency-impairs-neurovascular-recovery-in-ischemic-stroke
#1
Xiao Yang, Ke-Yi Geng, Yan-Shuang Zhang, Jin-Fan Zhang, Ke Yang, Jia-Xiang Shao, Wei-Liang Xia
AIMS: Sirt3 is one member of the NAD+ -dependent protein deacetylase family and plays crucial roles in diverse aspects of mammalian biological function. Then the role of Sirt3 on ischemia stroke is unknown. METHODS: To examine the effect of Sirt3 on ischemic stroke, we performed transient middle cerebral artery occlusion (tMCAO) in adult male Sirt3 knockout (KO) and wild-type (WT) mice. RESULTS: The level of Sirt3 in infarct region is decreased after ischemic stroke...
May 18, 2018: CNS Neuroscience & Therapeutics
https://www.readbyqxmd.com/read/29774174/outpatient-interventions-that-may-enhance-the-care-of-a-patient-with-co-existing-moyamoya-and-down-syndromes
#2
Anita Lwanga, Waldo Herrera, Katya Cruz Madrid, Antony Irungu
Moyamoya vasculopathy is a condition of chronic, progressive occlusion of the distal internal carotid arteries and the Circle of Willis. The resultant ischemia produces compensatory angiogenesis and the growth of a network of collateral blood vessels, which on angiography resemble a "puff of smoke" or "moyamoya" in Japanese. The objective of this case report is to describe the clinical course of a patient with Down and moyamoya syndromes and to enlighten clinicians about strategies that can be taken to enhance the care of similar patients...
March 16, 2018: Curēus
https://www.readbyqxmd.com/read/29760720/the-long-term-outcome-comparison-of-different-time-delayed-kallikrein-treatments-in-a-mouse-cerebral-ischemic-model
#3
Yaohui Ni, Kefu Cai, Yujie Hu, Chuan-Hui Wang, Yuanyuan Zhang, Hua Huang, Xing Su, Jin-Hua Gu
Delayed administration of kallikrein after cerebral infarction can improve neurological function. However, the appropriate kallkrein treatment time after ischemic stroke has not been illuminated. In this study, we compared the long-term outcome among three kallikrein therapeutic regimens starting at different time points following mouse cerebral ischemia. Furthermore, the protective mechanisms involving neurogenesis, angiogenesis, and AKT-GSK3 β -VEGF signaling pathway were analyzed. Human tissue kallikrein was injected through the tail vein daily starting at 8 h, 24 h, or 36 h after right middle cerebral artery occlusion (MCAO) until the 28th day...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29758937/the-controversial-origin-of-pericytes-during-angiogenesis-implications-for-cell-based-therapeutic-angiogenesis-and-cell-based-therapies
#4
Anna Blocki, Sebastian Beyer, Friedrich Jung, Michael Raghunath
Pericytes reside within the basement membrane of small vessels and are often in direct cellular contact with endothelial cells, fulfilling important functions during blood vessel formation and homeostasis. Recently, these pericytes have been also identified as mesenchymal stem cells. Mesenchymal stem cells, and especially their specialized subpopulation of pericytes, represent promising candidates for therapeutic angiogenesis applications, and have already been widely applied in pre-clinical and clinical trials...
2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29754505/1-formula-see-text-2-formula-see-text-3-formula-see-text-4-formula-see-text-6-penta-o-galloyl-%C3%AE-d-glucose-from-galla-rhois-ameliorates-renal-tubular-injury-and-microvascular-inflammation-in-acute-kidney-injury-rats
#5
Ji Hun Park, Min Chol Kho, Hyun Cheol Oh, Youn Chul Kim, Jung Joo Yoon, Yun Jung Lee, Dae Gill Kang, Ho Sub Lee
Renal ischemia-reperfusion injury (IRI), an important cause of acute kidney injury (AKI), causes increased renal tubular injury and microvascular inflammation. 1,[Formula: see text]2,[Formula: see text]3,[Formula: see text]4,[Formula: see text]6-penta-O-galloyl-[Formula: see text]-D-glucose (PGG) from Galla rhois has anticancer, anti-oxidation and angiogenesis effects. We examined protective effects of PGG on IRI-induced acute AKI. Clamping both renal arteries for 45[Formula: see text]min induced isechemia and then reperfusion...
May 13, 2018: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/29751775/cxcl12-engineered-endothelial-progenitor-cells-enhance-neurogenesis-and-angiogenesis-after-ischemic-brain-injury-in-mice
#6
Yaning Li, Shuang Chang, Wanlu Li, Guanghui Tang, Yuanyuan Ma, Yanqun Liu, Fang Yuan, Zhijun Zhang, Guo-Yuan Yang, Yongting Wang
BACKGROUND: Ischemic stroke causes a multitude of brain damage. Neurovascular injury and myelin sheath degradation are two manifestations of ischemic brain damage. Therapeutic strategies aiming only at repairing the neural components or the vessels cannot efficiently restore neurological function. Endothelial progenitor cells (EPCs) have the advantages of both promoting angiogenesis and secreting trophic factors that would promote neurogenesis. Chemokine cxcl12 gene therapy has also been shown to promote angiogenesis, neurogenesis, and remyelination, attracting EPCs, neural progenitor cells, and oligodendrocyte progenitor cells (OPCs) to the injured sites of the brain...
May 11, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29737539/increased-circulation-mobilization-of-endothelial-progenitor-cells-in-preterm-infants-with-retinopathy-of-prematurity
#7
Homa Babaei, Mahdi Alibabrdel, Simin Asadian, Vahid Siavashi, Masoome Jabarpour, Seyed Mahdi Nassiri
Retinopathy of prematurity (ROP) is a result of increased pathological neoangiogenesis of the retina in preterm infants. Cells responsible for the pathogenesis of ROP are unclear, but some evidence indicates that bone marrow derived cells are involved in this disorder. Endothelial progenitor cells (EPCs), play a role in angiogenesis in response to tissue ischemia or endothelial damage. In this study, the number of cEPCs in preterm infants with ROP was determined to identify whether the circulation mobilization of EPCs is associated with ROP...
May 8, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29736174/diabetic-ephrin-b2-stimulated-peripheral-blood-mononuclear-cells-enhance-poststroke-recovery-in-mice
#8
Rose Hilal, Marine Poittevin, Adrien Pasteur-Rousseau, Adrien Cogo, Gabrielle Mangin, Marie Chevauché, Yasmine Ziat, José Vilar, Jean-Marie Launay, Jean-François Gautier, Dong Broquères-You, Bernard I Levy, Tatyana Merkulova-Rainon, Nathalie Kubis
Clinical trials of cell therapy in stroke favor autologous cell transplantation. To date, feasibility studies have used bone marrow-derived mononuclear cells, but harvesting bone marrow cells is invasive thus complicating bedside treatment. We investigated the therapeutic potential of peripheral blood-derived mononuclear cells (PB-MNC) harvested from diabetic patients and stimulated by ephrin-B2 (PB-MNC+) (500,000 cells), injected intravenously 18-24 hours after induced cerebral ischemia in mice. Infarct volume, neurological deficit, neurogenesis, angiogenesis, and inflammation were investigated as were the potential mechanisms of PB-MNC+ cells in poststroke neurorepair...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29734653/the-janus-face-of-vegf-in-stroke
#9
REVIEW
Samuel J Geiseler, Cecilie Morland
The family of vascular endothelial growth factors (VEGFs) are known for their regulation of vascularization. In the brain, VEGFs are important regulators of angiogenesis, neuroprotection and neurogenesis. Dysregulation of VEGFs is involved in a large number of neurodegenerative diseases and acute neurological insults, including stroke. Stroke is the main cause of acquired disabilities, and normally results from an occlusion of a cerebral artery or a hemorrhage, both leading to focal ischemia. Neurons in the ischemic core rapidly undergo necrosis...
May 4, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29732653/the-regenerative-journey-of-pericytes-towards-clinical-translation
#10
REVIEW
William Cathery, Ashton Faulkner, Davide Maselli, Paolo Madeddu
Coronary artery disease (CAD) is the single leading cause of death worldwide. Advances in treatment and management have significantly improved patient outcomes. On the other hand, although mortality rates have decreased, more people are left with sequelae that require additional treatment and hospitalization. Moreover, patients with severe nonrevascularizable CAD remain with the only option of heart transplantation, which is limited by the shortage of suitable hearts. In recent years, cell-based regenerative therapy has emerged as a possible alternative treatment, with several regenerative medicinal products already in the clinical phase of development and other emerging as competitive preclinical solutions...
May 7, 2018: Stem Cells
https://www.readbyqxmd.com/read/29725266/repair-of-critical-sized-mandible-defects-in-aged-rat-using-hypoxia-preconditioned-bmscs-with-up-regulation-of-hif-1%C3%AE
#11
Jiankang Zhang, Zhuozhuo Feng, Junjun Wei, Yunbo Yu, Jie Luo, Jing Zhou, Yi Li, Xiaohui Zheng, Wei Tang, Lei Liu, Jie Long, Xiaoyu Li, Wei Jing
The repair of bone defects in the geriatric population remains a challenge for modern medicine. Transplantation of bone marrow mesenchymal stem cells (BMSCs) combined with or without biomaterials has been a promising approach to bone restoration and regeneration. Typically, the transplanted BMSCs are cultured under normoxic conditions (21% O2 and 10% serum medium) in vitro . However, the micro-environment of bone defect area is much more severe, in which lower physiological oxygen tension (<1%) and tissue ischemia were present...
2018: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/29722917/pathogenic-variants-in-the-abcc6-gene-are-associated-with-an-increased-risk-for-ischemic-stroke
#12
Eva Y G De Vilder, Stefanie Cardoen, Mohammad J Hosen, Olivier Le Saux, Julie De Zaeytijd, Bart P Leroy, Jacques De Reuck, Paul J Coucke, Anne De Paepe, Dimitri Hemelsoet, Olivier M Vanakker
Ischemic stroke causes a high mortality and morbidity worldwide. It results from a complex interplay of incompletely known environmental and genetic risk factors. We investigated the ABCC6 gene as a candidate risk factor for ischemic stroke because of the increased ischemic stroke incidence in the autosomal recessive disorder pseudoxanthoma elasticum, caused by biallelic pathogenic ABCC6 variants, the higher cardiovascular risk in heterozygous carriers and the established role of ABCC6 dysfunction in myocardial ischemia...
May 3, 2018: Brain Pathology
https://www.readbyqxmd.com/read/29721064/coronary-serum-exosomes-derived-from-patients-with-myocardial-ischemia-regulate-angiogenesis-through-the-mir-939-mediated-nitric-oxide-signaling-pathway
#13
Hao Li, Yiteng Liao, Lei Gao, Tao Zhuang, Zheyong Huang, Hongming Zhu, Junbo Ge
Rationale: Angiogenesis is a crucial step towards tissue repair and regeneration after ischemia. The role of circulating exosomes in angiogenic signal transduction has not been well elucidated. Thus, this study aims to investigate the effects of coronary serum exosomes from patients with myocardial ischemia on angiogenesis and to elucidate the underlying mechanisms. Methods and Results: The patients were enrolled according to the inclusion and exclusion criteria. Coronary blood was obtained from the angiography catheter...
2018: Theranostics
https://www.readbyqxmd.com/read/29710844/synthesis-and-characterization-of-injectable-hydrogels-with-varying-collagen%C3%A2-chitosan%C3%A2-thymosin-%C3%AE-4-composition-for-myocardial-infarction-therapy
#14
Achmad Dzihan Shaghiera, Prihartini Widiyanti, Helmy Yusuf
Thirty percent of global mortalities are caused by cardiovascular disease, and 54% of the aforementioned amount is instigated by ischemic heart disease that triggered myocardial infarction. Myocardial infarction is due to blood flow cessation in certain coronary arteries that causes lack of oxygen (ischemia) and stimulates myocardial necrosis. One of the methods to treat myocardial infarction consists in injecting cells or active biomolecules and biomaterials into heart infarction locations. This study aimed to investigate the characteristics of a collagen⁻chitosan-based hydrogel with variations in its chitosan composition...
April 30, 2018: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/29709997/improving-progenitor-cell-selection-to-promote-therapeutic-angiogenesis-in-patients-with-critical-limb-ischemia
#15
Alain Rivard
No abstract text is available yet for this article.
April 28, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29708992/genetic-profiling-of-young-and-aged-endothelial-progenitor-cells-in-hypoxia
#16
Tzu-Wei Wu, Chun-Chieh Liu, Chung-Lieh Hung, Chih-Hsien Yen, Yih-Jer Wu, Li-Yu Wang, Hung-I Yeh
Age is a major risk factor for diseases caused by ischemic hypoxia, such as stroke and coronary artery disease. Endothelial progenitor cells (EPCs) are the major cells respond to ischemic hypoxia through angiogenesis and vascular remodeling. However, the effect of aging on EPCs and their responses to hypoxia are not well understood. CD34+ EPCs were isolated from healthy volunteers and aged by replicative senescence, which was to passage cells until their doubling time was twice as long as the original cells...
2018: PloS One
https://www.readbyqxmd.com/read/29703701/robust-revascularization-in-models-of-limb-ischemia-using-a-clinically-translatable-human-stem-cell-derived-endothelial-cell-product
#17
Mark G MacAskill, Jaimy Saif, Alison Condie, Maurits A Jansen, Thomas J MacGillivray, Adriana A S Tavares, Lucija Fleisinger, Helen L Spencer, Marie Besnier, Ernesto Martin, Giovanni Biglino, David E Newby, Patrick W F Hadoke, Joanne C Mountford, Costanza Emanueli, Andrew H Baker
Pluripotent stem cell-derived differentiated endothelial cells offer high potential in regenerative medicine in the cardiovascular system. With the aim of translating the use of a human stem cell-derived endothelial cell product (hESC-ECP) for treatment of critical limb ischemia (CLI) in man, we report a good manufacturing practice (GMP)-compatible protocol and detailed cell tracking and efficacy data in multiple preclinical models. The clinical-grade cell line RC11 was used to generate hESC-ECP, which was identified as mostly endothelial (60% CD31+ /CD144+ ), with the remainder of the subset expressing various pericyte/mesenchymal stem cell markers...
March 28, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29703251/allogeneic-transplantation-of-programmable-cells-of-monocytic-origin-pcmo-improves-angiogenesis-and-tissue-recovery-in-critical-limb-ischemia-cli-a-translational-approach
#18
Rouven Berndt, Lars Hummitzsch, Katharina Heß, Martin Albrecht, Karina Zitta, Rene Rusch, Beke Sarras, Andreas Bayer, Jochen Cremer, Fred Faendrich, Justus Groß
BACKROUND: Employing growth factor-induced partial reprogramming in vitro, peripheral human blood monocytes can acquire a state of plasticity along with expression of various markers of pluripotency. These so-called programmable cells of monocytic origin (PCMO) hold great promise in regenerative therapies. The aim of this translational study was to explore and exploit the functional properties of PCMO for allogeneic cell transplantation therapy in critical limb ischemia (CLI). METHODS: Using our previously described differentiation protocol, murine and human monocytes were differentiated into PCMO...
April 27, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29700717/enriched-environment-elicits-proangiogenic-mechanisms-after-focal-cerebral-ischemia
#19
Hongyu Xie, Kewei Yu, Naiyun Zhou, Xueyan Shen, Shan Tian, Bei Zhang, Yuyang Wang, Junfa Wu, Gang Liu, Congyu Jiang, Ruiping Hu, Cenk Ayata, Yi Wu
Brain has limited capacity for spontaneous recovery of lost function after stroke. Exposure to enriched environment (EE) can facilitate functional recovery, but mechanisms underlying this effect are poorly understood. Here, we used a middle cerebral artery occlusion (MCAO) model to investigate the impact of EE on angiogenesis in the post-ischemic brain in adult male Sprague Dawley rats, and examined whether blood-borne factors may contribute. Compared with standard cage (SC), exposure to EE was associated with greater improvement in neurological function, higher peri-infarct vascular density, and higher chronic post-ischemic cerebral blood flow assessed by laser speckle imaging...
April 26, 2018: Translational Stroke Research
https://www.readbyqxmd.com/read/29700584/microrna-mediated-interacting-circuits-predict-hypoxia-and-inhibited-osteogenesis-of-stem-cells-and-dysregulated-angiogenesis-are-involved-in-osteonecrosis-of-the-femoral-head
#20
Gour-Shenq Kao, Yuan-Kun Tu, Pei-Hsun Sung, Feng-Sheng Wang, Yu-Der Lu, Chen-Ta Wu, Rio L C Lin, Hon-Kan Yip, Mel S Lee
PURPOSE: MicroRNAs (miRNAs) are associated with various pathologic conditions and can serve as diagnostic or therapeutic biomarkers. This study tried to identify the differentially expressed miRNAs to predict the possible pathomechanisms involved in osteonecrosis of the femoral head (ONFH). METHODS: We compared the peripheral blood miRNAs in 46 patients with ONFH and 85 healthy controls by microarray and droplet digital polymerase chain reaction (ddPCR). Putative interacted networks between the differentially responded miRNAs were analyzed by web-based bioinformatics prediction tools...
April 26, 2018: International Orthopaedics
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