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https://www.readbyqxmd.com/read/29790954/clinical-use-of-intracoronary-imaging-part-1-guidance-and-optimization-of-coronary-interventions-an-expert-consensus-document-of-the-european-association-of-percutaneous-cardiovascular-interventions-endorsed-by-the-chinese-society-of-cardiology
#1
Lorenz Räber, Gary S Mintz, Konstantinos C Koskinas, Thomas W Johnson, Niels R Holm, Yoshinubo Onuma, Maria D Radu, Michael Joner, Bo Yu, Haibo Jia, Nicolas Menevau, Jose M de la Torre Hernandez, Javier Escaned, Jonathan Hill, Francesco Prati, Antonio Colombo, Carlo di Mario, Evelyn Regar, Davide Capodanno, William Wijns, Robert A Byrne, Giulio Guagliumi
This Consensus Document is the first of two reports summarizing the views of an expert panel organized by the European Association of Percutaneous Cardiovascular Interventions (EAPCI) on the clinical use of intracoronary imaging including intravascular ultrasound (IVUS) and optical coherence tomography (OCT). The first document appraises the role of intracoronary imaging to guide percutaneous coronary interventions (PCIs) in clinical practice. Current evidence regarding the impact of intracoronary imaging guidance on cardiovascular outcomes is summarized, and patients or lesions most likely to derive clinical benefit from an imaging-guided intervention are identified...
May 22, 2018: European Heart Journal
https://www.readbyqxmd.com/read/29790017/machine-learning-in-the-integration-of-simple-variables-for-identifying-patients-with-myocardial-ischemia
#2
Luis Eduardo Juarez-Orozco, Remco J J Knol, Carlos A Sanchez-Catasus, Octavio Martinez-Manzanera, Friso M van der Zant, Juhani Knuuti
BACKGROUND: A significant number of variables are obtained when characterizing patients suspected with myocardial ischemia or at risk of MACE. Guidelines typically use a handful of them to support further workup or therapeutic decisions. However, it is likely that the numerous available predictors maintain intrinsic complex interrelations. Machine learning (ML) offers the possibility to elucidate complex patterns within data to optimize individual patient classification. We evaluated the feasibility and performance of ML in utilizing simple accessible clinical and functional variables for the identification of patients with ischemia or an elevated risk of MACE as determined through quantitative PET myocardial perfusion reserve (MPR)...
May 22, 2018: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29789674/tuning-alginate-gelatin-bioink-properties-by-varying-solvent-and-their-impact-on-stem-cell-behavior
#3
Zhao Li, Sha Huang, Yufan Liu, Bin Yao, Tian Hu, Haigang Shi, Jiangfan Xie, Xiaobing Fu
Bioink optimization is considered as one of main challenges in cell-laden 3D bioprinting. Alginate-Gelatin (Alg-Gel) hydrogel have been extensively used as bioink. However, its properties could be influenced by various parameters, and little is known about the evidence featuring the impact of solvent. Here we investigated four Alg-Gel bioink by varying solvent ionic strength (named B-1, B-2, B-3 and B-4). Mechanical properties and printability of bioink samples and their impacts on behaviors of encapsulated epidermal stem cells (ESCs) were tested...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29786550/generation-of-defined-neural-populations-from-pluripotent-stem-cells
#4
REVIEW
Sarah F McComish, Maeve A Caldwell
Effective and efficient generation of human neural stem cells and subsequently functional neural populations from pluripotent stem cells has facilitated advancements in the study of human development and disease modelling. This review will discuss the established protocols for the generation of defined neural populations including regionalized neurons and astrocytes, oligodendrocytes and microglia. Early protocols were established in embryonic stem cells (ESC) but the discovery of induced pluripotent stem cells (iPSC) in 2006 provided a new platform for modelling human disorders of the central nervous system (CNS)...
July 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29785661/atrial-fibrillation-in-dialysis-patients-is-there-a-place-for-non-vitamin-k-antagonist-oral-anticoagulants
#5
REVIEW
Elzbieta Mlodawska, Paulina Lopatowska, Jolanta Malyszko, Maciej Banach, Bożena Sobkowicz, Adrian Covic, Anna Tomaszuk-Kazberuk
Atrial fibrillation (AF) occurs approximately in 3% of general population, with greater prevalence in elderly. Non-vitamin K-dependent oral anticoagulant agents (NOACs) according to the current European guidelines are recommended for patients with AF at high risk for stroke as a first-choice treatment. NOACs are not inferior to warfarin or some of them are better than warfarin in reducing the rate of ischemic stroke. Moreover, they significantly reduce the rate of intracranial hemorrhages, major bleedings, and mortality compared with warfarin...
May 21, 2018: International Urology and Nephrology
https://www.readbyqxmd.com/read/29784672/genetic-screening-and-multipotency-in-rhesus-monkey-haploid-neural-progenitor-cells
#6
Haisong Wang, Wenhao Zhang, Jian Yu, Congyu Wu, Qian Gao, Xu Li, Yanni Li, Jinxin Zhang, Yaru Tian, Tao Tan, Weizhi Ji, Luyuan Li, Yang Yu, Ling Shuai
Haploid embryonic stem cells (haESCs) have been extensively applied in forward and reverse genetic screening. However, the mammalian haploid somatic cell line is difficult to achieve because of spontaneous diploidization in differentiation. As a non-human primate species, monkeys are widely used in basic and pre-clinical research in which haploid cells are restricted to ESCs. Here, we report that rhesus monkey haESCs in an optimized culture medium showed naïve-state pluripotency and stable haploidy. This model facilitated the derivation of haploid neural progenitor cells (haNPCs), which maintained haploidy and differentiation potential into neurons and glia for a long period in vitro High-throughput trapping mutations can be efficiently introduced into haNPCs via piggyBac transposons...
May 21, 2018: Development
https://www.readbyqxmd.com/read/29782639/sudden-cardiac-death-in-athletes-and-the-value-of-cardiovascular-magnetic-resonance
#7
REVIEW
Sophie I Mavrogeni, Flora Bacopoulou, Despoina Apostolaki, George P Chrousos
Sudden cardiac death (SCD) is the non-traumatic death, due to loss of heart function that occurs suddenly and unexpectedly within 6 hours of a previously normal state of health. It is related to intense competitive sports promoting ventricular tachycardia (VT)/ventricular fibrillation (VF) in the presence of underlying abnormal substrate. A serial evaluation of cardiac physiologic changes taking place during training will allow the better understanding of athlete's heart and will facilitate its discrimination from other gray-zone cardiomyopathies...
May 21, 2018: European Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29781215/strap-deficiency-impairs-mouse-embryonic-stem-cells-lineage-commitment-through-cyp26a1-mediated-retinoic-acid-homeostasis
#8
Lin Jin, Chenbei Chang, Kevin M Pawlik, Arunima Datta, Larry M Johnson, Trung Vu, Joseph L Napoli, Pran K Datta
Retinoic acid (RA) signaling is essential for the differentiation of embryonic stem cells (ESCs) and vertebrate development. RA biosynthesis and metabolism are controlled by a series of enzymes, but the molecular regulators of these enzymes remain largely obscure. In this study, we investigated the functional role of the WD-domain protein STRAP (serine threonine kinase receptor-associated protein) in the pluripotency and lineage commitment of murine ESCs. We generated Strap knockout (KO) mouse ESCs and subjected them to spontaneous differentiation...
May 21, 2018: Stem Cells
https://www.readbyqxmd.com/read/29779897/inductive-and-selective-effects-of-gsk3-and-mek-inhibition-on-nanog-heterogeneity-in-embryonic-stem-cells
#9
Simon Hastreiter, Stavroula Skylaki, Dirk Loeffler, Andreas Reimann, Oliver Hilsenbeck, Philipp S Hoppe, Daniel L Coutu, Konstantinos D Kokkaliaris, Michael Schwarzfischer, Konstantinos Anastassiadis, Fabian J Theis, Timm Schroeder
Embryonic stem cells (ESCs) display heterogeneous expression of pluripotency factors such as Nanog when cultured with serum and leukemia inhibitory factor (LIF). In contrast, dual inhibition of the signaling kinases GSK3 and MEK (2i) converts ESC cultures into a state with more uniform and high Nanog expression. However, it is so far unclear whether 2i acts through an inductive or selective mechanism. Here, we use continuous time-lapse imaging to quantify the dynamics of death, proliferation, and Nanog expression in mouse ESCs after 2i addition...
May 10, 2018: Stem Cell Reports
https://www.readbyqxmd.com/read/29778090/massive-pericardial-effusion-without-cardiac-tamponade-due-to-subclinical-hypothyroidism-hashimoto-s-disease
#10
Panteleimon E Papakonstantinou, Nikolaos Gourniezakis, Christos Skiadas, Alexandros Patrianakos, Achilleas Gikas
CONTEXT: Hypothyroidism is a significant cause of pericardial effusion. However, large pericardial effusions due to hypothyroidism are extremely rare. Hormone replacement therapy is the cornerstone of treatment for hypothyroidism and regular follow-up of patients after initiation of the therapy is indicated. Herein, the case of a 70-year-old woman with a massive pericardial effusion due to Hashimoto's disease is presented. ISSUES: A 70-year-old female from a rural village on the island of Crete, Greece, was admitted to our hospital due to a urinary tract infection...
May 2018: Rural and Remote Health
https://www.readbyqxmd.com/read/29777057/glycogen-synthase-kinase-3-gsk-3-activity-regulates-mrna-methylation-in-mouse-embryonic-stem-cells
#11
Kelsie J Faulds, Jennifer N Egelston, Laura J Sedivy, Matthew K Mitchell, Sanjana Garimella, Hanna Kozlowski, Angelo D'Alessandro, Kirk C Hansen, Jeremy L Balsbaugh, Christopher J Phiel
Glycogen synthase kinase-3 (Gsk-3) activity regulates multiple signal transduction pathways, and is also a key component of the network responsible for maintaining stem cell pluripotency. Genetic deletion of Gsk-3α and Gsk-3β or inhibition of Gsk-3 activity via small molecules promotes stem cell pluripotency, yet the mechanism underlying the role for Gsk-3 in this process remains ambiguous. Another cellular process that has been shown to affect stem cell pluripotency is mRNA methylation (m6 A). Here, we describe an intersection between these components - the regulation of m6 A by Gsk-3...
May 18, 2018: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/29775782/network-based-expression-analyses-and-experimental-validations-revealed-high-co-expression-between-yap1-and-stem-cell-markers-compared-to-differentiated-cells
#12
Fariba Dehghanian, Zohreh Hojati, Fariba Esmaeili, Ali Masoudi-Nejad
The Hippo signaling pathway is identified as a potential regulatory pathway which plays critical roles in differentiation and stem cell self-renewal. Yap1 is a primary transcriptional effector of this pathway. The importance of Yap1 in embryonic stem cells (ESCs) and differentiation procedure remains a challenging question, since two different observations have been reported. To answer this question we used co-expression network and differential co-expression analyses followed by experimental validations. Our results indicate that Yap1 is highly co-expressed with stem cell markers in ESCs but not in differentiated cells (DCs)...
May 15, 2018: Genomics
https://www.readbyqxmd.com/read/29774076/the-human-somatostatin-receptor-type-2-as-an-imaging-and-suicide-reporter-gene-for-pluripotent-stem-cell-derived-therapy-of-myocardial-infarction
#13
Katrien Neyrinck, Natacha Breuls, Bryan Holvoet, Wouter Oosterlinck, Esther Wolfs, Hubert Vanbilloen, Olivier Gheysens, Robin Duelen, Willy Gsell, Ivo Lambrichts, Uwe Himmelreich, Catherine M Verfaillie, Maurilio Sampaolesi, Christophe M Deroose
Rationale: Pluripotent stem cells (PSCs) are being investigated as a cell source for regenerative medicine since they provide an infinitive pool of cells that are able to differentiate towards every cell type of the body. One possible therapeutic application involves the use of these cells to treat myocardial infarction (MI), a condition where billions of cardiomyocytes (CMs) are lost. Although several protocols have been developed to differentiate PSCs towards CMs, none of these provide a completely pure population, thereby still posing a risk for neoplastic teratoma formation...
2018: Theranostics
https://www.readbyqxmd.com/read/29767511/low-dose-arsenic-trioxide-modulates-the-differentiation-of-mouse-embryonic-stem-cells
#14
Wenlin Yuan, Jun Chen, Hongren Huang, Zhihui Cai, Qinjie Ling, Feng Huang, Zhi Huang
Arsenic (As) is a well-known environmental pollutant,while arsenic trioxide (ATO) has been proven to be an effective treatment for acute promyelocytic leukemia, however, the mechanism underlying its dual effects is not fully understood.Embryonic stem cells (ESCs) appear properties of stemness and serve as a popular model to investigate epigenetic modifiers includingenvironmental pollutants.Herein, the effect of low dose ATO on differentiation were evaluatedin vitro using a mouse ESCs (mESCs) cell line, CGR8...
May 16, 2018: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/29764928/ovarian-steroid-dependence-of-endoplasmic-reticulum-stress-involvement-in-endometrial-cell-apoptosis-during-the-human-endometrial-cycle
#15
Jong Yeob Choi, Min Wha Jo, Eun Young Lee, Dong-Yun Lee, Doo Seok Choi
Endoplasmic reticulum (ER) stress is a common cellular stress response that enhances apoptosis to trigger cell death. However, recent studies have shown that estrogen suppresses apoptosis by inhibiting ER stress in some cell types, suggesting that ER stress-induced apoptosis is regulated by ovarian steroid hormones. In endometrial cells, ER stress may also be controlled by ovarian steroid hormones and could be involved in apoptosis induction during the menstrual cycle. To test this hypothesis, we elucidate whether ER stress is regulated by ovarian steroid hormones in human endometrial cells and if it is involved in apoptosis induction...
June 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/29763985/induced-pluripotent-stem-cells-ipscs-as-a-new-source-of-bone-in-reconstructive-surgery-a-systematic-review-and-meta-analysis-of-preclinical-studies
#16
REVIEW
Riham Fliefel, Michael Ehrenfeld, Sven Otto
BACKGROUND: It is now well-established that regenerative medicine and stem cell therapy are the most promising approach to obtain full tissue regeneration by using various cell types including stem cells isolated from adult tissues, embryonic stem cells (ESCs) and induced pluripotent stem cells (iPSCs). Recently, iPSCs have been successfully differentiated into osteoprogenitors to facilitate repair and regeneration of bone defects. Thus, the purpose of this systematic review and meta-analysis is to summarize the articles published that assess the osteogenic potential of iPSCs in-vitro and their ability to heal bone defects in reconstructive surgery...
May 15, 2018: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/29763921/peptidomic-analysis-of-endometrial-tissue-from-patients-with-ovarian-endometriosis
#17
Yunping Xue, Pengfei Xu, Sujuan Xu, Kai Xue, Lingling Xu, Jie Chen, Juan Xu, Xiaoyan Shi, Qian Li, Lin Gu
BACKGROUND/AIMS: Ovarian endometriosis (OvE) is ovarian cyst that is lined with endometrial tissue. They are found in 17-44% of women with endometriosis. Their clinical manifestations include pelvic pain, dysmenorrhea, dyspareunia, and infertility. Although the incidence of OvE has increased yearly, the exact pathogenesis of OvE is still unclear. We used peptidomics, an emerging branch of proteomics, to identify differentially expressed peptides in order to determine the possible roles of these peptides in the pathogenesis of OvE...
May 9, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29762665/mir-194-3p-represses-the-progesterone-receptor-and-decidualization-in-eutopic-endometrium-from-women-with-endometriosis
#18
Tianjiao Pei, Chang Liu, Tingting Liu, Li Xiao, Bin Luo, Jing Tan, Xueying Li, Guojun Zhou, Changling Duan, Wei Huang
Progesterone resistance in the eutopic endometrium (EuE) is suggested to be a critical factor for decreased endometrial receptivity and implantation failure in reproductive-aged women with endometriosis. Altered expression of miRNAs has been reported to play an important role in the pathophysiology of endometriosis-associated infertility. However, the underlying mechanisms of aberrant progesterone receptor (PR) and deficient decidualization regulated by miRNAs in endometriosis have not been thoroughly elucidated...
May 11, 2018: Endocrinology
https://www.readbyqxmd.com/read/29761578/identification-of-the-coiled-coil-domain-as-an-essential-mbd3-element-for-preserving-lineage-commitment-potential-of-embryonic-stem-cells
#19
Masataka Hirasaki, Atsushi Ueda, Masamitsu N Asaka, Kousuke Uranishi, Ayumu Suzuki, Masakazu Kohda, Yosuke Mizuno, Yasushi Okazaki, Masazumi Nishimoto, Jafar Sharif, Haruhiko Koseki, Akihiko Okuda
Embryonic stem cells (ESCs) exhibit two salient features beneficial for regenerative medicine: unlimited self-renewal and pluripotency. Methyl-CpG-binding domain protein 3 (Mbd3), a scaffolding component of the nucleosome remodeling deacetylase complex, is a specific regulator of pluripotency, as ESCs lacking Mbd3 are defective for lineage commitment potential but retain normal self-renewal properties. However, functional similarities and dissimilarities among the three Mbd3 isoforms (a, b, and c) have not been intensively explored...
May 15, 2018: Stem Cells
https://www.readbyqxmd.com/read/29761338/-journey-of-the-s%C3%A2-icd-to-first-line-therapy
#20
REVIEW
Elif Kaya, Reza Wakili, Tienush Rassaf
The subcutaneous implantable cardioverter-defibrillator (S-ICD®, Boston Scientific, Marlborough, MA, USA, previously Cameron Health, San Clemente, CA, USA) represents an important milestone in ICD therapy for prevention of sudden cardiac death (SCD). Since the introduction of the S‑ICD in 2010, the device has undergone further development. Based on the unique feature of an entirely extracardiac implantation, the S‑ICD is able to reduce the common perioperative and long-term complications of the usual endovascular implanted ICD systems...
May 14, 2018: Herzschrittmachertherapie & Elektrophysiologie
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