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https://www.readbyqxmd.com/read/29895785/a-novel-shk-like-toxic-peptide-from-the-transcriptome-of-the-cnidarian-palythoa-caribaeorum-displays-neuroprotection-and-cardioprotection-in-zebrafish
#1
Qiwen Liao, Guiyi Gong, Shirley Weng In Siu, Clarence Tsun Ting Wong, Huidong Yu, Yu Chung Tse, Gandhi Rádis-Baptista, Simon Ming-Yuen Lee
Palythoa caribaeorum (class Anthozoa) is a zoantharian which, together with other cnidarians, like jellyfishes, hydra, and sea anemones, possesses specialized structures in its tissues, the cnidocytes, which deliver an array of toxins in order to capture prey and deter predators. The whole transcriptome of P. caribaeroum was deep sequenced, and a diversity of toxin-related peptide sequences were identified, and some retrieved for functional analysis. In this work, a peptide precursor containing a ShK domain, named PcShK3, was analyzed by means of computational processing, comprising structural phylogenetic analysis, model prediction, and dynamics simulation of peptide-receptor interaction...
June 12, 2018: Toxins
https://www.readbyqxmd.com/read/29892015/multi-ethnic-genome-wide-association-study-for-atrial-fibrillation
#2
Carolina Roselli, Mark D Chaffin, Lu-Chen Weng, Stefanie Aeschbacher, Gustav Ahlberg, Christine M Albert, Peter Almgren, Alvaro Alonso, Christopher D Anderson, Krishna G Aragam, Dan E Arking, John Barnard, Traci M Bartz, Emelia J Benjamin, Nathan A Bihlmeyer, Joshua C Bis, Heather L Bloom, Eric Boerwinkle, Erwin B Bottinger, Jennifer A Brody, Hugh Calkins, Archie Campbell, Thomas P Cappola, John Carlquist, Daniel I Chasman, Lin Y Chen, Yii-Der Ida Chen, Eue-Keun Choi, Seung Hoan Choi, Ingrid E Christophersen, Mina K Chung, John W Cole, David Conen, James Cook, Harry J Crijns, Michael J Cutler, Scott M Damrauer, Brian R Daniels, Dawood Darbar, Graciela Delgado, Joshua C Denny, Martin Dichgans, Marcus Dörr, Elton A Dudink, Samuel C Dudley, Nada Esa, Tonu Esko, Markku Eskola, Diane Fatkin, Stephan B Felix, Ian Ford, Oscar H Franco, Bastiaan Geelhoed, Raji P Grewal, Vilmundur Gudnason, Xiuqing Guo, Namrata Gupta, Stefan Gustafsson, Rebecca Gutmann, Anders Hamsten, Tamara B Harris, Caroline Hayward, Susan R Heckbert, Jussi Hernesniemi, Lynne J Hocking, Albert Hofman, Andrea R V R Horimoto, Jie Huang, Paul L Huang, Jennifer Huffman, Erik Ingelsson, Esra Gucuk Ipek, Kaoru Ito, Jordi Jimenez-Conde, Renee Johnson, J Wouter Jukema, Stefan Kääb, Mika Kähönen, Yoichiro Kamatani, John P Kane, Adnan Kastrati, Sekar Kathiresan, Petra Katschnig-Winter, Maryam Kavousi, Thorsten Kessler, Bas L Kietselaer, Paulus Kirchhof, Marcus E Kleber, Stacey Knight, Jose E Krieger, Michiaki Kubo, Lenore J Launer, Jari Laurikka, Terho Lehtimäki, Kirsten Leineweber, Rozenn N Lemaitre, Man Li, Hong Euy Lim, Henry J Lin, Honghuang Lin, Lars Lind, Cecilia M Lindgren, Marja-Liisa Lokki, Barry London, Ruth J F Loos, Siew-Kee Low, Yingchang Lu, Leo-Pekka Lyytikäinen, Peter W Macfarlane, Patrik K Magnusson, Anubha Mahajan, Rainer Malik, Alfredo J Mansur, Gregory M Marcus, Lauren Margolin, Kenneth B Margulies, Winfried März, David D McManus, Olle Melander, Sanghamitra Mohanty, Jay A Montgomery, Michael P Morley, Andrew P Morris, Martina Müller-Nurasyid, Andrea Natale, Saman Nazarian, Benjamin Neumann, Christopher Newton-Cheh, Maartje N Niemeijer, Kjell Nikus, Peter Nilsson, Raymond Noordam, Heidi Oellers, Morten S Olesen, Marju Orho-Melander, Sandosh Padmanabhan, Hui-Nam Pak, Guillaume Paré, Nancy L Pedersen, Joanna Pera, Alexandre Pereira, David Porteous, Bruce M Psaty, Sara L Pulit, Clive R Pullinger, Daniel J Rader, Lena Refsgaard, Marta Ribasés, Paul M Ridker, Michiel Rienstra, Lorenz Risch, Dan M Roden, Jonathan Rosand, Michael A Rosenberg, Natalia Rost, Jerome I Rotter, Samir Saba, Roopinder K Sandhu, Renate B Schnabel, Katharina Schramm, Heribert Schunkert, Claudia Schurman, Stuart A Scott, Ilkka Seppälä, Christian Shaffer, Svati Shah, Alaa A Shalaby, Jaemin Shim, M Benjamin Shoemaker, Joylene E Siland, Juha Sinisalo, Moritz F Sinner, Agnieszka Slowik, Albert V Smith, Blair H Smith, J Gustav Smith, Jonathan D Smith, Nicholas L Smith, Elsayed Z Soliman, Nona Sotoodehnia, Bruno H Stricker, Albert Sun, Han Sun, Jesper H Svendsen, Toshihiro Tanaka, Kahraman Tanriverdi, Kent D Taylor, Maris Teder-Laving, Alexander Teumer, Sébastien Thériault, Stella Trompet, Nathan R Tucker, Arnljot Tveit, Andre G Uitterlinden, Pim Van Der Harst, Isabelle C Van Gelder, David R Van Wagoner, Niek Verweij, Efthymia Vlachopoulou, Uwe Völker, Biqi Wang, Peter E Weeke, Bob Weijs, Raul Weiss, Stefan Weiss, Quinn S Wells, Kerri L Wiggins, Jorge A Wong, Daniel Woo, Bradford B Worrall, Pil-Sung Yang, Jie Yao, Zachary T Yoneda, Tanja Zeller, Lingyao Zeng, Steven A Lubitz, Kathryn L Lunetta, Patrick T Ellinor
Atrial fibrillation (AF) affects more than 33 million individuals worldwide 1 and has a complex heritability 2 . We conducted the largest meta-analysis of genome-wide association studies (GWAS) for AF to date, consisting of more than half a million individuals, including 65,446 with AF. In total, we identified 97 loci significantly associated with AF, including 67 that were novel in a combined-ancestry analysis, and 3 that were novel in a European-specific analysis. We sought to identify AF-associated genes at the GWAS loci by performing RNA-sequencing and expression quantitative trait locus analyses in 101 left atrial samples, the most relevant tissue for AF...
June 11, 2018: Nature Genetics
https://www.readbyqxmd.com/read/29891665/chd4-and-the-nurd-complex-directly-control-cardiac-sarcomere-formation
#3
Caralynn M Wilczewski, Austin J Hepperla, Takashi Shimbo, Lauren Wasson, Zachary L Robbe, Ian J Davis, Paul A Wade, Frank L Conlon
Cardiac development relies on proper cardiomyocyte differentiation, including expression and assembly of cell-type-specific actomyosin subunits into a functional cardiac sarcomere. Control of this process involves not only promoting expression of cardiac sarcomere subunits but also repressing expression of noncardiac myofibril paralogs. This level of transcriptional control requires broadly expressed multiprotein machines that modify and remodel the chromatin landscape to restrict transcription machinery access...
June 11, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29876429/genome-wide-transcriptomics-analysis-of-genes-regulated-by-gata4-5-and-6-during-cardiomyogenesis-in-xenopus-laevis
#4
Boni A Afouda, Adam T Lynch, Eduardo de Paiva Alves, Stefan Hoppler
The transcription factors GATA4, GATA5 and GATA6 play important roles in heart muscle differentiation. The data presented in this article are related to the research article entitled "Genome-wide transcriptomics analysis identifies sox7 and sox18 as specifically regulated by gata4 in cardiomyogenesis" (Afouda et al., 2017) [1]. The present study identifies genes regulated by these individual cardiogenic GATA factors using genome-wide transcriptomics analysis. We have presented genes that are specifically regulated by each of them, as well those regulated by either of them...
April 2018: Data in Brief
https://www.readbyqxmd.com/read/29875658/integration-of-metabonomics-and-transcriptomics-reveals-the-therapeutic-effects-and-mechanisms-of-baoyuan-decoction-for-myocardial-ischemia
#5
Zhiyong Du, Zeliu Shu, Wei Lei, Chun Li, Kewu Zeng, Xiaoyu Guo, Mingbo Zhao, Pengfei Tu, Yong Jiang
Myocardial ischemia (MI) is an escalating public health care burden worldwide. Baoyuan decoction (BYD) is a traditional Chinese medicine formula with cardioprotective activity; however, its pharmacological characteristics and mechanisms are obscured. Herein, a multi-omics strategy via incorporating the metabonomics, transcriptomics, and pharmacodynamics was adopted to investigate the effects and molecular mechanisms of BYD for treating MI in a rat model of left anterior descending coronary artery (LADCA) ligation...
2018: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29872217/rna-sequencing-reveals-novel-transcripts-from-sympathetic-stellate-ganglia-during-cardiac-sympathetic-hyperactivity
#6
Emma N Bardsley, Harvey Davis, Olujimi A Ajijola, Keith J Buckler, Jeffrey L Ardell, Kalyanam Shivkumar, David J Paterson
Cardiovascular disease is the most prevalent age-related illness worldwide, causing approximately 15 million deaths every year. Hypertension is central in determining cardiovascular risk and is a strong predictive indicator of morbidity and mortality; however, there remains an unmet clinical need for disease-modifying and prophylactic interventions. Enhanced sympathetic activity is a well-established contributor to the pathophysiology of hypertension, however the cellular and molecular changes that increase sympathetic neurotransmission are not known...
June 5, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29870805/mineralocorticoid-receptor-antagonism-reverses-diabetes-related-coronary-vasodilator-dysfunction-a-unique-vascular-transcriptomic-signature
#7
Scott M Brown, Alex I Meuth, J Wade Davis, R Scott Rector, Shawn B Bender
Coronary microvascular dysfunction predicts and may be a proximate cause of cardiac dysfunction and mortality in diabetes; however, few effective treatments exist for these conditions. We recently demonstrated that mineralocorticoid receptor (MR) antagonism reversed cardiovascular dysfunction in early-stage obesity/insulin resistance. The mechanisms underlying this benefit of MR antagonism and its relevance in the setting of long-term obesity complications like diabetes; however, remain unclear. Thus, the present study evaluated the impact of MR antagonism on diabetes-related coronary dysfunction and defines the MR-dependent vascular transcriptome in the Otsuka Long-Evans Tokushima Fatty (OLETF) rat recapitulating later stages of human diabetes...
June 2, 2018: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29868933/mapping-macrophage-polarization-over-the-myocardial-infarction-time-continuum
#8
Alan J Mouton, Kristine Y DeLeon-Pennell, Osvaldo J Rivera Gonzalez, Elizabeth R Flynn, Tom C Freeman, Jeffrey J Saucerman, Michael R Garrett, Yonggang Ma, Romain Harmancey, Merry L Lindsey
In response to myocardial infarction (MI), cardiac macrophages regulate inflammation and scar formation. We hypothesized that macrophages undergo polarization state changes over the MI time course and assessed macrophage polarization transcriptomic signatures over the first week of MI. C57BL/6 J male mice (3-6 months old) were subjected to permanent coronary artery ligation to induce MI, and macrophages were isolated from the infarct region at days 1, 3, and 7 post-MI. Day 0, no MI resident cardiac macrophages served as the negative MI control...
June 4, 2018: Basic Research in Cardiology
https://www.readbyqxmd.com/read/29850786/nur77-protects-against-adverse-cardiac-remodelling-by-limiting-neuropeptide-y-signalling-in-the-sympathoadrenal-cardiac-axis
#9
Lejla Medzikovic, Cindy van Roomen, Antonius Baartscheer, Pieter B van Loenen, Judith de Vos, Erik N T P Bakker, Duco S Koenis, Amin Damanafshan, Esther E Creemers, E Karin Arkenbout, Carlie J M de Vries, Vivian de Waard
Aims: Cardiac remodelling and heart failure are promoted by persistent sympathetic activity. We recently reported that nuclear receptor Nur77 may protect against sympathetic agonist-induced cardiac remodelling in mice. The sympathetic co-transmitter Neuropeptide Y (NPY) is co-released with catecholamines and is a known cardiac modulator and predictor of heart failure mortality. Recently, transcriptome analyses revealed NPY as a putative target of Nur77. In this study, we assess whether Nur77 modulates adverse cardiac remodelling via NPY signalling...
May 30, 2018: Cardiovascular Research
https://www.readbyqxmd.com/read/29848314/nup155-insufficiency-recalibrates-a-pluripotent-transcriptome-with-network-remodeling-of-a-cardiogenic-signaling-module
#10
Claudia C Preston, Saranya P Wyles, Santiago Reyes, Emily C Storm, Bruce W Eckloff, Randolph S Faustino
BACKGROUND: Atrial fibrillation is a cardiac disease driven by numerous idiopathic etiologies. NUP155 is a nuclear pore complex protein that has been identified as a clinical driver of atrial fibrillation, yet the precise mechanism is unknown. The present study employs a systems biology algorithm to identify effects of NUP155 disruption on cardiogenicity in a model of stem cell-derived differentiation. METHODS: Embryonic stem (ES) cell lines (n = 5) with truncated NUP155 were cultured in parallel with wild type (WT) ES cells (n = 5), and then harvested for RNAseq...
May 30, 2018: BMC Systems Biology
https://www.readbyqxmd.com/read/29806219/alterations-in-retinoic-acid-signaling-affect-the-development-of-the-mouse-coronary-vasculature
#11
Suya Wang, Weiliang Huang, Hozana A Castillo, Maureen A Kane, José Xavier-Neto, Paul A Trainor, Alexander R Moise
BACKGROUND: During the final stages of heart development the myocardium grows and becomes vascularized via paracrine factors and cell progenitors derived from the epicardium. There is evidence to suggest that retinoic acid (RA), a metabolite of vitamin A, plays an important role in epicardial-based developmental programming. However, the consequences of altered RA-signaling in coronary development have not been systematically investigated. RESULTS: We explored the developmental consequences of altered RA-signaling in late cardiogenic events that involve the epicardium...
May 27, 2018: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/29803840/bringing-in-vitro-analysis-closer-to-in-vivo-studying-doxorubicin-toxicity-and-associated-mechanisms-in-3d-human-microtissues-with-pbpk-based-dose-modelling
#12
Marcha Verheijen, Yannick Schrooders, Hans Gmuender, Ramona Nudischer, Olivia Clayton, James Hynes, Steven Niederer, Henrik Cordes, Lars Kuepfer, Jos Kleinjans, Florian Caiment
Doxorubicin (DOX) is a chemotherapeutic agent of which the medical use is limited due to cardiotoxicity. While acute cardiotoxicity is reversible, chronic cardiotoxicity is persistent or progressive, dose-dependent and irreversible. While DOX mechanisms of action are not fully understood yet, 3 toxicity processes are known to occur in vivo: cardiomyocyte dysfunction, mitochondrial dysfunction and cell death. We present an in vitro experimental design aimed at detecting DOX-induced cardiotoxicity by obtaining a global view of the induced molecular mechanisms through RNA-sequencing...
May 24, 2018: Toxicology Letters
https://www.readbyqxmd.com/read/29793206/effects-on-the-hepatic-transcriptome-of-chicken-embryos-in-ovo-exposed-to-phenobarbital
#13
Jiahua Guo, Shohei Ito, Hoa Thanh Nguyen, Kimika Yamamoto, Hisato Iwata
This work aimed at evaluating the toxic effects of in ovo exposure to phenobarbital (PB) and unveiling the mode of action by transcriptome analysis in the embryonic liver of a model avian species, chicken (Gallus gallus). Embryos were initially treated with saline or 1 μg PB /g egg at Hamburger Hamilton Stage (HHS) 1 (1st day), followed by 20 days of incubation to HHS 46. At 21st day, chicks that pipped successfully were euthanized and dissected for assessing the PB caused effects on phenotypes and the liver transcriptome in both genders...
May 21, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29789901/cell-differentiation-in-cardiac-myxomas-confocal-microscopy-and-gene-expression-analysis-after-laser-capture-microdissection
#14
Angela Pucci, Claudia Mattioli, Marco Matteucci, Daniele Lorenzini, Francesca Panvini, Simone Pacini, Chiara Ippolito, Michele Celiento, Andrea De Martino, Amelio Dolfi, Beatrice Belgio, Uberto Bortolotti, Fulvio Basolo, Giovanni Bartoloni
Cardiac myxomas are rare tumors with a heterogeneous cell population including properly neoplastic (lepidic), endothelial and smooth muscle cells. The assessment of neoplastic (lepidic) cell differentiation pattern is rather difficult using conventional light microscopy immunohistochemistry and/or whole tissue extracts for mRNA analyses. In a preliminary study, we investigated 20 formalin-fixed and paraffin-embedded cardiac myxomas by means of conventional immunohistochemistry; in 10/20 cases, cell differentiation was also analyzed by real-time RT-PCR after laser capture microdissection of the neoplastic cells, whereas calretinin and endothelial antigen CD31 immunoreactivity was localized in 4/10 cases by double immunofluorescence confocal microscopy...
May 22, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29778942/transcriptomic-and-methylomic-analysis-reveal-the-toxicological-effect-of-2-3-7-8-tetrachlorodibenzodioxin-on-human-embryonic-stem-cell
#15
Keng Po Lai, Jing Woei Li, Ting Fung Chan, Andy Chen, Cherie Yin Lau Lee, William Shu Biu Yeung, Chris Kong Chu Wong
Cumulating epidemiological studies demonstrated that environmental exposure to endocrine disrupting chemicals (EDCs) during the early stages of fetal development is associated with the increase in disease susceptibility in later life. The fetal developmental plasticity is considered as a protective mechanism against an undesirable prenatal environment. Dioxin is one of the environmental contaminants and is considered a diabetogenic factor. Experimental animal and human epidemiological studies have revealed that dioxin exposure was associated with insulin resistance and altered beta cell function...
May 10, 2018: Chemosphere
https://www.readbyqxmd.com/read/29760728/mesenchymal-stromal-cells-cultured-in-serum-from-heart-failure-patients-are-more-resistant-to-simulated-chronic-and-acute-stress
#16
Timo Z Nazari-Shafti, Zhiyi Xu, Andreas Matthäus Bader, Georg Henke, Kristin Klose, Volkmar Falk, Christof Stamm
Despite regulatory issues surrounding the use of animal-derived cell culture supplements, most clinical cardiac cell therapy trials using mesenchymal stromal cells (MSCs) still rely on fetal bovine serum (FBS) for cell expansion before transplantation. We sought to investigate the effect of human serum from heart failure patients (HFS) on cord blood MSCs (CB-MSCs) during short-term culture under regular conditions and during simulated acute and chronic stress. Cell survival, proliferation, metabolic activity, and apoptosis were quantified, and gene expression profiles of selected apoptosis and cell cycle regulators were determined...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29753320/adverse-effects-of-hif1a-mutation-and-maternal-diabetes-on-the-offspring-heart
#17
Radka Cerychova, Romana Bohuslavova, Frantisek Papousek, David Sedmera, Pavel Abaffy, Vladimir Benes, Frantisek Kolar, Gabriela Pavlinkova
BACKGROUND: Epidemiological studies show that maternal diabetes predisposes offspring to cardiovascular and metabolic disorders. However, the precise mechanisms for the underlying penetrance and disease predisposition remain poorly understood. We examined whether hypoxia-inducible factor 1 alpha, in combination with exposure to a diabetic intrauterine environment, influences the function and molecular structure of the adult offspring heart. METHODS AND RESULTS: In a mouse model, we demonstrated that haploinsufficient (Hif1a+/- ) offspring from a diabetic pregnancy developed left ventricle dysfunction at 12 weeks of age, as manifested by decreased fractional shortening and structural remodeling of the myocardium...
May 12, 2018: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/29752948/functional-and-transcriptomic-insights-into-pathogenesis-of-r9c-phospholamban-mutation-using-human-induced-pluripotent-stem-cell-derived-cardiomyocytes
#18
Delaine K Ceholski, Irene C Turnbull, Chi-Wing Kong, Simon Koplev, Joshua Mayourian, Przemek A Gorski, Francesca Stillitano, Angelos A Skodras, Mathieu Nonnenmacher, Ninette Cohen, Johan L M Björkegren, Daniel R Stroik, Razvan L Cornea, David D Thomas, Ronald A Li, Kevin D Costa, Roger J Hajjar
Dilated cardiomyopathy (DCM) can be caused by mutations in the cardiac protein phospholamban (PLN). We used CRISPR/Cas9 to insert the R9C PLN mutation at its endogenous locus into a human induced pluripotent stem cell (hiPSC) line from an individual with no cardiovascular disease. R9C PLN hiPSC-CMs display a blunted β-agonist response and defective calcium handling. In 3D human engineered cardiac tissues (hECTs), a blunted lusitropic response to β-adrenergic stimulation was observed with R9C PLN. hiPSC-CMs harboring the R9C PLN mutation showed activation of a hypertrophic phenotype, as evidenced by expression of hypertrophic markers and increased cell size and capacitance of cardiomyocytes...
May 9, 2018: Journal of Molecular and Cellular Cardiology
https://www.readbyqxmd.com/read/29736818/transcriptome-profiling-reveals-phlda1-as-a-novel-molecular-marker-for-ischemic-cardiomyopathy
#19
Jinhui Wang, Feifei Wang, Jingbin Zhu, Mei Song, Jinghong An, Weimin Li
Ischemic cardiomyopathy (ICM) represents a worldwide health issue owning to its high sudden death rate. Easy diagnosis and effective treatment of ICM are still lacking. Identification of novel molecular markers will help illustrate the pathophysiology of ICM and facilitate its diagnosis and targeted treatment. Transcription profiling could be an easy and efficient way for identifying new markers. However, the mega data in the available database may contain a large number of false-positive hits. To identify the true marker for ICM, we systematically compared available microarray datasets in the GEO database and identified 26 genes that are shared by all datasets...
May 8, 2018: Journal of Molecular Neuroscience: MN
https://www.readbyqxmd.com/read/29732402/the-local-microenvironment-limits-the-regenerative-potential-of-the-mouse-neonatal-heart
#20
Mario Notari, Antoni Ventura-Rubio, Sylvia J Bedford-Guaus, Ignasi Jorba, Lola Mulero, Daniel Navajas, Mercè Martí, Ángel Raya
Neonatal mice have been shown to regenerate their hearts during a transient window of time of approximately 1 week after birth. However, experimental evidence for this phenomenon is not undisputed, because several laboratories have been unable to detect neonatal heart regeneration. We first confirmed that 1-day-old neonatal mice are indeed able to mount a robust regenerative response after heart amputation. We then found that this regenerative ability sharply declines within 48 hours, with hearts of 2-day-old mice responding to amputation with fibrosis, rather than regeneration...
May 2018: Science Advances
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