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Cell therapy myocardial infarction

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https://www.readbyqxmd.com/read/28321020/assessment-of-dna-damage-in-leukocytes-of-patients-with-coronary-artery-disease-by-comet-assay
#1
Mohd Akbar Bhat, Gursatej Gandhi
DNA damage in the peripheral blood leukocytes (PBL) of patients with coronary artery disease (CAD) was investigated using the sensitive alkaline single cell gel electrophoresis (SCGE)/comet assay.This case-control study consisted of CAD patients (n = 200; mean age, 59.04 ± 0.75 years) undergoing treatment at local hospitals and age-, sex-, and ethnicity-matched healthy controls (n = 200; mean age, 57.88 ± 0.96 years) from the general population.CAD patients had significantly (P < 0.001) increased DNA damage (tail DNA percent (T-DNA %) 22...
March 17, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28318007/myocardial-infarction-in-a-neonate-lessons-for-neonatal-and-internal-medicine
#2
Werner Streif
Due to the lack of evidence-based guidelines, management strategies for neonatal MI should be individualized and administered largely at the discretion of responsible treating teams. Supportive care with a focus on preserving adequate circulation and antithrombotic therapy with a view to restoring vascular patency are the mainstays of treatment. Thrombolytic therapy of neonatal MI includes a chance to completely restore myocardial function. Understanding the resilience of the neonatal heart and mechanism of cardiac cell repair in neonates may spark novel treatment strategies for severe MI in the large number of affected individuals in an aging population...
March 20, 2017: Hämostaseologie
https://www.readbyqxmd.com/read/28316922/miracle-cells-for-natural-dentistry-a-review
#3
REVIEW
Rani Somani, Shipra Jaidka, Neeti Bajaj, Sameksha Arora
Stem cells are undifferentiated cells that can differentiate into specialized cells. Recently, enormous growth has been seen in the recognition of stem cell-based therapies, which have the potential to ameliorate the life of patients with conditions that span from Parkinson's disease to cardiac ischemia to bone or tooth loss. This research has produced new but unexplored possibilities in the regeneration of different organs and tissues. Presently, research is focused on the proficiency of stem cells and their utilization in dentistry, which is gaining interest...
January 2017: Journal of Oral Biology and Craniofacial Research
https://www.readbyqxmd.com/read/28303152/promising-therapeutic-strategies-for-mesenchymal-stem-cell-based-cardiovascular-regeneration-from-cell-priming-to-tissue-engineering
#4
REVIEW
Seung Taek Ji, Hyunyun Kim, Jisoo Yun, Joo Seop Chung, Sang-Mo Kwon
The primary cause of death among chronic diseases worldwide is ischemic cardiovascular diseases, such as stroke and myocardial infarction. Recent evidence indicates that adult stem cell therapies involving cardiovascular regeneration represent promising strategies to treat cardiovascular diseases. Owing to their immunomodulatory properties and vascular repair capabilities, mesenchymal stem cells (MSCs) are strong candidate therapeutic stem cells for use in cardiovascular regeneration. However, major limitations must be overcome, including their very low survival rate in ischemic lesion...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28298296/fabrication-of-synthetic-mesenchymal-stem-cells-for-the-treatment-of-acute-myocardial-infarction-in-mice
#5
Lan Luo, Junnan Tang, Kodai Nishi, Chen Yan, Phuong-Uyen Dinh, Jhon Cores, Takashi Kudo, Jinying Zhang, Tao-Sheng Li, Ke Cheng
Rationale: Stem cell therapy faces a number of challenges. It is difficult to grow, preserve, and transport stem cells before they are administered to the patient. Synthetic analogs for stem cells represent a new approach to overcome these hurdles and hold the potential to revolutionize regenerative medicine. Objective: We aim to fabricate synthetic analogs of stem cells and test their therapeutic potential for treatment of acute myocardial infarction in mice. Methods and Results: We packaged secreted factors from human bone marrow-derived mesenchymal stem cells (MSC) into Poly(lactic-co-glycolic acid) PLGA microparticles and then coated them with MSC membranes...
March 15, 2017: Circulation Research
https://www.readbyqxmd.com/read/28296006/intracoronary-allogeneic-cardiosphere-derived-stem-cells-are-safe-for-use-in-dogs-with-dilated-cardiomyopathy
#6
Michael Taylor Hensley, Junnan Tang, Kathleen Woodruff, Teresa Defrancesco, Sandra Tou, Christina M Williams, Mathew Breen, Kathryn Meurs, Bruce Keene, Ke Cheng
Cardiosphere-derived cells (CDCs) have been shown to reduce scar size and increase viable myocardium in human patients with mild/moderate myocardial infarction. Studies in rodent models suggest that CDC therapy may confer therapeutic benefits in patients with non-ischaemic dilated cardiomyopathy (DCM). We sought to determine the safety and efficacy of allogeneic CDC in a large animal (canine) model of spontaneous DCM. Canine CDCs (cCDCs) were grown from a donor dog heart. Similar to human CDCs, cCDCs express CD105 and are slightly positive for c-kit and CD90...
March 15, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28295048/cardiac-repair-in-a-mouse-model-of-acute-myocardial-infarction-with-trophoblast-stem-cells
#7
Guannan Li, Jianzhou Chen, Xinlin Zhang, Guixin He, Wei Tan, Han Wu, Ran Li, Yuhan Chen, Rong Gu, Jun Xie, Biao Xu
Various stem cells have been explored for the purpose of cardiac repair. However, any individual stem cell population has not been considered as the ideal source. Recently, trophoblast stem cells (TSCs), a newly described stem cell type, have demonstrated extensive plasticity. The present study evaluated the therapeutic effect of TSCs transplantation for heart regeneration in a mouse model of myocardial infarction (MI) and made a direct comparison with the most commonly used mesenchymal stem cells (MSCs). Transplantation of TSCs and MSCs led to a remarkably improved cardiac function in contrast with the PBS control, but only the TSCs exhibited the potential of differentiation into cardiomyocytes in vivo...
March 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28290994/derivation-and-validation-of-the-predicting-bleeding-complications-in-patients-undergoing-stent-implantation-and-subsequent-dual-antiplatelet-therapy-precise-dapt-score-a-pooled-analysis-of-individual-patient-datasets-from-clinical-trials
#8
Francesco Costa, David van Klaveren, Stefan James, Dik Heg, Lorenz Räber, Fausto Feres, Thomas Pilgrim, Myeong-Ki Hong, Hyo-Soo Kim, Antonio Colombo, Philippe Gabriel Steg, Thomas Zanchin, Tullio Palmerini, Lars Wallentin, Deepak L Bhatt, Gregg W Stone, Stephan Windecker, Ewout W Steyerberg, Marco Valgimigli
BACKGROUND: Dual antiplatelet therapy (DAPT) with aspirin plus a P2Y12 inhibitor prevents ischaemic events after coronary stenting, but increases bleeding. Guidelines support weighting bleeding risk before the selection of treatment duration, but no standardised tool exists for this purpose. METHODS: A total of 14 963 patients treated with DAPT after coronary stenting-largely consisting of aspirin and clopidogrel and without indication to oral anticoagulation-were pooled at a single-patient level from eight multicentre randomised clinical trials with independent adjudication of events...
March 11, 2017: Lancet
https://www.readbyqxmd.com/read/28286377/ischemia-reperfusion-injury-following-acute-myocardial-infarction-a-critical-issue-for-clinicians-and-forensic-pathologists
#9
REVIEW
Margherita Neri, Irene Riezzo, Natascha Pascale, Cristoforo Pomara, Emanuela Turillazzi
Acute myocardial infarction (AMI) is a leading cause of morbidity and mortality. Reperfusion strategies are the current standard therapy for AMI. However, they may result in paradoxical cardiomyocyte dysfunction, known as ischemic reperfusion injury (IRI). Different forms of IRI are recognized, of which only the first two are reversible: reperfusion-induced arrhythmias, myocardial stunning, microvascular obstruction, and lethal myocardial reperfusion injury. Sudden death is the most common pattern for ischemia-induced lethal ventricular arrhythmias during AMI...
2017: Mediators of Inflammation
https://www.readbyqxmd.com/read/28284757/c-kit-positive-cardiac-stem-cells-and-bone-marrow-derived-mesenchymal-stem-cells-synergistically-enhance-angiogenesis-and-improve-cardiac-function-after-myocardial-infarction-in-a-paracrine-manner
#10
Luer Bao, Qingshu Meng, Yuan Li, Shengqiong Deng, Zuoren Yu, Zhongmin Liu, Lin Zhang, Huimin Fan
BACKGROUND: Stem cell transplantation offers a promising treatment for heart failure. Recent studies show that both c-kit positive cardiac stem cells (CSCs) and bone marrow-derived mesenchymal stem cells (BM-MSCs) are good candidates for stem cell therapy to treat heart failure. However, the exact mechanism of stem cell therapy in improving cardiac function of ischemic cardiomyopathy is not fully known. Our objective was to test our hypothesis that CSCs and/or BM-MSCs repair the damaged heart by boosting post-myocardial infarction (MI) angiogenesis in a paracrine manner...
March 8, 2017: Journal of Cardiac Failure
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
#11
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/28281186/calcium-sensing-receptor-mediated-mitogen-activated-protein-kinase-pathway-improves-the-status-of-transplanted-mouse-embryonic-stem-cells-in-rats-with-acute-myocardial-infarction
#12
Jian Sun, Tao Wei, Shuzhi Bai, Hongtao Zhao, Xiaoqin Liu, Jinfeng Yu, Li Li, Gaochen Song, Hairong Luan, Changqing Xu
Several studies have identified the critical role of calcium-sensing receptors (CaSRs) in cardiac ischaemia/reperfusion injury and cardiac hypertrophy and have demonstrated that CaSRs induce myocardial apoptosis by activating MAPKs. Using acute myocardial infarction rat models, we found that a combination therapy of CaSR inhibition and embryonic stem cell (ESC) transplantation after acute myocardial infarction (AMI) leads to a dramatic reduction in the infarct size; a significant increase in the maximum rising and falling rate (+dp/dtmax and -dp/dtmax, respectively) of left ventricular pressure; a significant decrease in left ventricular end-diastolic pressure; a significant decrease in the mRNA expression level of CaSR, Bax, Bcl-2, cleaved caspase-3, cleaved caspase-9, p-ERK, p-JNK and p-P38 protein together with apoptosis indexes in the C and E groups; and a significant decrease in cTnT levels as well as LDH and CK activity...
March 9, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28279225/allogenic-adipose-derived-stem-cell-therapy-overcomes-ischemia-induced-microvessel-rarefaction-in-the-myocardium-systems-biology-study
#13
Gemma Vilahur, Blanca Oñate, Judit Cubedo, Maria Teresa Béjar, Gemma Arderiu, Esther Peña, Laura Casaní, Manuel Gutiérrez, Antoni Capdevila, Guillem Pons-Lladó, Francesc Carreras, Alberto Hidalgo, Lina Badimon
BACKGROUND: Myocardial microvascular loss after myocardial infarction (MI) remains a therapeutic challenge. Autologous stem cell therapy was considered as an alternative; however, it has shown modest benefits due to the impairing effects of cardiovascular risk factors on stem cells. Allogenic adipose-derived stem cells (ASCs) may overcome such limitations, and because of their low immunogenicity and paracrine potential may be good candidates for cell therapy. In the present study we investigated the effects of allogenic ASCs and their released products on cardiac rarefaction post MI...
March 9, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28262548/notch-inhibition-enhances-cardiac-reprogramming-by-increasing-mef2c-transcriptional-activity
#14
Maria Abad, Hisayuki Hashimoto, Huanyu Zhou, Maria Gabriela Morales, Beibei Chen, Rhonda Bassel-Duby, Eric N Olson
Conversion of fibroblasts into functional cardiomyocytes represents a potential means of restoring cardiac function after myocardial infarction, but so far this process remains inefficient and little is known about its molecular mechanisms. Here we show that DAPT, a classical Notch inhibitor, enhances the conversion of mouse fibroblasts into induced cardiac-like myocytes by the transcription factors GATA4, HAND2, MEF2C, and TBX5. DAPT cooperates with AKT kinase to further augment this process, resulting in up to 70% conversion efficiency...
March 14, 2017: Stem Cell Reports
https://www.readbyqxmd.com/read/28261097/curcumin-alleviates-oxldl-induced-mmp-9-and-emmprin-expression-through-the-inhibition-of-nf-%C3%AE%C2%BAb-and-mapk-pathways-in-macrophages
#15
Jiatian Cao, Bozhi Ye, Lu Lin, Lei Tian, Hongbo Yang, Changqian Wang, Weijian Huang, Zhouqing Huang
Rupture of vulnerable atherosclerotic plaques is the leading cause of acute myocardial infarction (AMI) and unstable angina pectoris (UA). However, it still lacks an effective therapy to stabilize the vulnerable atherosclerotic plaques. Numerous reports have shown that upregulation of MMP-9 (matrix metalloproteinase-9) and EMMPRIN (extracellular matrix metalloproteinase inducer) in macrophages is involved in the progression and development of vulnerable plaques. Here we evaluated the impact of curcumin on the expression of MMP-9 and EMMPRIN in macrophages...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28246353/long-noncoding-rna-miat-acts-as-a-biomarker-in-diabetic-retinopathy-by-absorbing-of-mir-29b-and-regulating-cell-apoptosis
#16
Jiayu Zhang, Maochong Chen, Jiawei Chen, Sisi Lin, Daqiu Cai, Chengwei Chen, Zhenguo Chen
Background: Diabetic retinopathy (DR) is the complication of diabetic mellitus (DM), and is a leading cause of vision loss globally. However, the pathogenic mechanism and clinical therapy still needs further improvement. The biologic significance of myocardial infarction associated transcript (MIAT) in DR remains unknown, Here we aims to explore the mechanism between MIAT and DR, which was essential for RD. Method: Streptozotocin(STZ) was used to induce DM mice, and high glucose was used to stimulate cells...
February 28, 2017: Bioscience Reports
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
#17
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/28244640/mesenchymal-stem-cell-loaded-cardiac-patch-promotes-epicardial-activation-and-repair-of-the-infarcted-myocardium
#18
Qiang-Li Wang, Hai-Jie Wang, Zhi-Hua Li, Yong-Li Wang, Xue-Ping Wu, Yu-Zhen Tan
Cardiac patch is considered a promising strategy for enhancing stem cell therapy of myocardial infarction (MI). However, the underlying mechanisms for cardiac patch repairing infarcted myocardium remain unclear. In this study, we investigated the mechanisms of PCL/gelatin patch loaded with MSCs on activating endogenous cardiac repair. PCL/gelatin patch was fabricated by electrospun. The patch enhanced the survival of the seeded MSCs and their HIF-1α, Tβ4, VEGF and SDF-1 expression and decreased CXCL14 expression in hypoxic and serum-deprived conditions...
February 28, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28235633/cell-therapy-for-heart-disease-after-15-years-unmet-expectations
#19
REVIEW
Patrizia Nigro, Beatrice Bassetti, Laura Cavallotti, Valentina Catto, Corrado Carbucicchio, Giulio Pompilio
Over the past two decades cardiac cell therapy (CCT) has emerged as a promising new strategy to cure heart diseases at high unmet need. Thousands of patients have entered clinical trials for acute or chronic heart conditions testing different cell types, including autologous or allogeneic bone marrow (BM)-derived mononuclear or selected cells, BM- or adipose tissue-derived mesenchymal cells, or cardiac resident progenitors based on their potential ability to regenerate scarred or dysfunctional myocardium. Nowadays, the original enthusiasm surrounding the regenerative medicine field has been cushioned by a cumulative body of evidence indicating an inefficient or modest efficacy of CCT in improving cardiac function, along with the continued lack of indisputable proof for long-term prognostic benefit...
February 21, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28231509/a-single-injection-of-protein-loaded-coacervate-gel-significantly-improves-cardiac-function-post-infarction
#20
H K Awada, D W Long, Z Wang, M P Hwang, K Kim, Y Wang
After myocardial infarction (MI), the heart undergoes fibrotic pathological remodeling instead of repair and regeneration. With multiple pathologies developing after MI, treatment using several proteins is expected to address this range of pathologies more effectively than a single-agent therapy. A factorial design of experiments study guided us to combine three complementary factors in one injection: tissue inhibitor of metalloproteinases-3 (TIMP-3) was embedded in a fibrin gel for signaling in the initial phase of the treatment, while basic fibroblast growth factor (FGF-2) and stromal cell-derived factor 1-alpha (SDF-1α) were embedded in heparin-based coacervates for sustained release and distributed within the same fibrin gel to exert their effects over a longer period...
February 17, 2017: Biomaterials
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