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Congenital heart diseases and genetics

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https://www.readbyqxmd.com/read/29237691/four-generation-family-with-ebstein-anomaly-highlights-future-challenges-in-congenital-heart-disease-genetics
#1
EDITORIAL
David S Winlaw, Sally L Dunwoodie, Edwin P Kirk
No abstract text is available yet for this article.
December 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/29237676/familial-ebstein-anomaly-whole-exome-sequencing-identifies-novel-phenotype-associated-with-flna
#2
Catherine L Mercer, Gaia Andreoletti, Aisling Carroll, Anthony P Salmon, I Karen Temple, Sarah Ennis
BACKGROUND: Familial Ebstein anomaly is a rare form of congenital heart disease. We report 7 individuals among 2 generations of 1 family with Ebstein anomaly. This family was first reported in 1991 by Balaji et al in which family members were also reported to have a mild skeletal phenotype. The most likely mechanism of inheritance was concluded to be autosomal dominant. We sought to identify the genetic pathogenesis in this family using a next generation sequencing approach. METHODS AND RESULTS: Whole exome sequencing was performed in 2 cousins in this family using the Agilent SureSelect Human all Exon 51 Mb version 5 capture kit...
December 2017: Circulation. Cardiovascular Genetics
https://www.readbyqxmd.com/read/29237533/-research-advances-in-the-mechanism-of-congenital-heart-disease-induced-by-pregestational-diabetes-mellitus
#3
Jie Wang, Feng Wang, Yong-Hao Gui
Congenital heart disease (CHD) is the most common birth defect at present and has a complex etiology which involves the combined effect of genetic and environmental factors. Pregestational diabetes mellitus is significantly associated with the development of CHD, but the detailed mechanism remains unknown. This article reviews the research advances in the molecular mechanism of CHD caused by pregestational diabetes mellitus.
December 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29234357/neonatal-arrhythmias-diagnosis-treatment-and-clinical-outcome
#4
REVIEW
Ji-Eun Ban
Arrhythmias in the neonatal period are not uncommon, and may occur in neonates with a normal heart or in those with structural heart disease. Neonatal arrhythmias are classified as either benign or nonbenign. Benign arrhythmias include sinus arrhythmia, premature atrial contraction, premature ventricular contraction, and junctional rhythm; these arrhythmias have no clinical significance and do not need therapy. Supraventricular tachycardia, ventricular tachycardia, atrioventricular conduction abnormalities, and genetic arrhythmia such as congenital long-QT syndrome are classified as nonbenign arrhythmias...
November 2017: Korean Journal of Pediatrics
https://www.readbyqxmd.com/read/29231167/glucose-inhibits-cardiac-muscle-maturation-through-nucleotide-biosynthesis
#5
Haruko Nakano, Itsunari Minami, Daniel Braas, Herman Pappoe, Xiuju Wu, Addelynn Sagadevan, Laurent Vergnes, Kai Fu, Marco Morselli, Christopher Dunham, Xueqin Ding, Adam Z Stieg, James K Gimzewski, Matteo Pellegrini, Peter M Clark, Karen Reue, Aldons J Lusis, Bernard Ribalet, Siavash K Kurdistani, Heather Christofk, Norio Nakatsuji, Atsushi Nakano
The heart switches its energy substrate from glucose to fatty acids at birth, and maternal hyperglycemia is associated with congenital heart disease. However, little is known about how blood glucose impacts heart formation. Using a chemically defined human pluripotent stem-cell-derived cardiomyocyte differentiation system, we found that high glucose inhibits the maturation of cardiomyocytes at genetic, structural, metabolic, electrophysiological, and biomechanical levels by promoting nucleotide biosynthesis through the pentose phosphate pathway...
December 12, 2017: ELife
https://www.readbyqxmd.com/read/29228333/dnaaf1-links-heart-laterality-with-the-aaa-atpase-ruvbl1-and-ciliary-intraflagellar-transport
#6
Verity L Hartill, Glenn van de Hoek, Mitali P Patel, Rosie Little, Christopher M Watson, Ian R Berry, Amelia Shoemark, Dina Abdelmottaleb, Emma Parkes, Chiara Bacchelli, Katarzyna Szymanska, Nine V Knoers, Peter J Scambler, Marius Ueffing, Karsten Boldt, Robert Yates, Paul J Winyard, Beryl Adler, Eduardo Moya, Louise Hattingh, Anil Shenoy, Claire Hogg, Eamonn Sheridan, Ronald Roepman, Dominic Norris, Hannah M Mitchison, Rachel H Giles, Colin A Johnson
DNAAF1 (LRRC50) is a cytoplasmic protein required for dynein heavy chain assembly and cilia motility, and DNAAF1 mutations cause primary ciliary dyskinesia (PCD; MIM 613193). We describe four families with DNAAF1 mutations and complex congenital heart disease (CHD). In three families, all affected individuals have typical PCD phenotypes. However, an additional family demonstrates isolated CHD (heterotaxy) in two affected siblings, but no clinical evidence of PCD. We identified a homozygous DNAAF1 missense mutation, p...
December 7, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29218360/bioengineered-cardiac-tissue-based-on-human-stem-cells-for-clinical-application
#7
Monica Jara Avaca, Ina Gruh
Engineered cardiac tissue might enable novel therapeutic strategies for the human heart in a number of acquired and congenital diseases. With recent advances in stem cell technologies, namely the availability of pluripotent stem cells, the generation of potentially autologous tissue grafts has become a realistic option. Nevertheless, a number of limitations still have to be addressed before clinical application of engineered cardiac tissue based on human stem cells can be realized. We summarize current progress and pending challenges regarding the optimal cell source, cardiomyogenic lineage specification, purification, safety of genetic cell engineering, and genomic stability...
December 8, 2017: Advances in Biochemical Engineering/biotechnology
https://www.readbyqxmd.com/read/29218069/down-syndrome-genetics-and-cardiogenetics
#8
Vasilica Plaiasu
During the last years, Down syndrome has been the focus of special attention. Down syndrome is a genetic disorder characterized by distinct physical features and some degree of cognitive disability. Patients with Down syndrome also present many other congenital anomalies. The mapping for phenotypes to specific regions of chromosome 21 permits to identify which genes (or small regions) contribute to the phenotypic features of Down syndrome and thus, to understand its pathogenesis. Mainly there are three cytogenetic forms of Down syndrome: free trisomy 21, mosaic trisomy 21 and robertsonian translocation trisomy 21...
September 2017: Mædica
https://www.readbyqxmd.com/read/29214238/redox-regulation-of-a-gain-of-function-mutation-n308d-in-shp2-noonan-syndrome
#9
Luciana E S F Machado, David A Critton, Rebecca Page, Wolfgang Peti
SHP2 (Src homology 2 domain-containing protein tyrosine phosphatase 2; PTPN11) is a ubiquitous multidomain, nonreceptor protein tyrosine phosphatase (PTP) that plays an important role in diseases such as cancer, diabetes, and Noonan syndrome (NS). NS is one of the most common genetic disorders associated with congenital heart disease, and approximately half of the patients with Noonan syndrome have gain-of-function mutations in SHP2. One of the most common NS mutations is N308D. The activity of SHP2, like that of most PTPs, is reversibly inactivated by reactive oxygen species (ROS)...
November 30, 2017: ACS Omega
https://www.readbyqxmd.com/read/29210924/intraventricular-hemorrhage-in-moderate-to-severe-congenital-heart-disease
#10
Cynthia M Ortinau, Jagruti S Anadkat, Christopher D Smyser, Pirooz Eghtesady
OBJECTIVES: Determine the prevalence of intraventricular hemorrhage in infants with moderate to severe congenital heart disease, investigate the impact of gestational age, cardiac diagnosis, and cardiac intervention on intraventricular hemorrhage, and compare intraventricular hemorrhage rates in preterm infants with and without congenital heart disease. DESIGN: A single-center retrospective review. SETTING: A tertiary care children's hospital...
November 28, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29198537/healthcare-utilization-and-comorbidities-associated-with-anorectal-malformations-in-the-united-states
#11
Karlo Kovacic, Sravan R Matta, Katja Kovacic, Casey Calkins, Ke Yan, Manu R Sood
OBJECTIVE: To determine nationwide prevalence and healthcare utilization in children with anorectal malformations and associated anomalies over a 6-year period. STUDY DESIGN: We used the Kids' Inpatient Database for the years 2006, 2009, and 2012 for data collection. International Classification of Diseases, Ninth Revision codes were used to identify patients with anorectal malformations and associated anomalies. RESULTS: A total of 2396 children <2 years of age with anorectal malformations were identified using weighted analysis; 54...
November 30, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/29196848/left-sided-congenital-heart-lesions-in-mosaic-turner-syndrome
#12
Nouha Bouayed Abdelmoula, Balkiss Abdelmoula, Walid Smaoui, Imen Trabelsi, Rim Louati, Samir Aloulou, Wafa Aloulou, Fatma Abid, Senda Kammoun, Khaled Trigui, Olfa Bedoui, Hichem Denguir, Souad Mallek, Mustapha Ben Aziza, Jamila Dammak, Oldez Kaabi, Nawel Abdellaoui, Fatma Turki, Asma Kaabi, Wafa Kamoun, Jihen Jabeur, Wided Ltaif, Kays Chaker, Haytham Fourati, Samir M'rabet, Hedi Ben Ameur, Naourez Gouia, Mohamed Nabil Mhiri, Tarek Rebai
In the era of the diseasomes and interactome networks, linking genetics with phenotypic traits in Turner syndrome should be studied thoroughly. As a part of this stratagem, mosaicism of both X and Y chromosome which is a common finding in TS and an evaluation of congenital heart diseases in the different situations of mosaic TS types, can be helpful in the identification of disturbed sex chromosomes, genes and signaling pathway actors. Here we report the case of a mosaic TS associated to four left-sided CHD, including BAV, COA, aortic aneurysms and dissections at an early age...
December 1, 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/29192580/copy-number-variants-and-exome-sequencing-analysis-in-six-pairs-of-chinese-monozygotic-twins-discordant-for-congenital-heart-disease
#13
Yuejuan Xu, Tingting Li, Tian Pu, Ruixue Cao, Fei Long, Sun Chen, Kun Sun, Rang Xu
Congenital heart disease (CHD) is one of the most common birth defects. More than 200 susceptibility loci have been identified for CHDs, yet a large part of the genetic risk factors remain unexplained. Monozygotic (MZ) twins are thought to be completely genetically identical; however, discordant phenotypes have been found in MZ twins. Recent studies have demonstrated genetic differences between MZ twins. We aimed to test whether copy number variants (CNVs) and/or genetic mutation differences play a role in the etiology of CHDs by using single nucleotide polymorphism (SNP) genotyping arrays and whole exome sequencing of twin pairs discordant for CHDs...
December 2017: Twin Research and Human Genetics: the Official Journal of the International Society for Twin Studies
https://www.readbyqxmd.com/read/29191297/verification-of-heart-disease-implications-for-a-new-heart-transplantation-allocation-system
#14
Pejman Raeisi-Giglou, E Rene Rodriguez, Eugene H Blackstone, Carmela D Tan, Eileen M Hsich
OBJECTIVES: This study sought to determine the accuracy of the pre-transplantation clinical diagnosis of heart disease in the United Network for Organ Sharing (UNOS) database. BACKGROUND: Because survival on the heart transplantation waitlist depends on underlying heart disease, a new allocation system will include the type of heart disease. Accuracy of the pre-transplantation clinical diagnosis and the effect of misclassification are unknown. METHODS: We included all adults who received transplants at our center between January 2009 to December 2015...
December 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29185192/a-functional-aryl-hydrocarbon-receptor-genetic-variant-alone-and-in-combination-with-parental-exposure-is-a-risk-factor-for-congenital-heart-disease
#15
Silvia Pulignani, Andrea Borghini, Cecilia Vecoli, Ilenia Foffa, Lamia Ait-Ali, Maria Grazia Andreassi
Recent experimental studies showed that ablation of the aryl hydrocarbon receptor (AhR) as well as its activation by exogenous ligands disrupt the molecular networks involved in heart formation and function, leading to congenital heart disease (CHD). However, no evidence is available about the role of AhR in humans. We assessed the prevalence of a functional AhR genetic variant (p.Arg554Lys) in CHD patients as well as its joint effects with parental exposure. A total of 128 CHD patients (76 males; age 6.2 ± 6...
November 28, 2017: Cardiovascular Toxicology
https://www.readbyqxmd.com/read/29178121/study-of-congenital-heart-diseases-in-patients-with-down-syndrome-in-algeria
#16
Khaira Boussouf, Zoubida Zaidi, Mounira Amrane, Naima Hammoudi, Malika Mebarki, Sid Ali Amalou
This study aimed to describe and evaluate the type, frequency and patterns of congenital heart diseases (CHDs) in patients with Down Syndrome (DS) in Sétif, Algeria. Down Syndrome, or trisomy 21, is the most common genetic disorder in the world. Data were collected and followed from January 2009 to December 2013. Parental consanguinity documenting pedigree analyzing, chromosome analysis and clinical examination were carried out for all cases. Results have shown that 22 (15.4%; ± 0.06) of the total 143 known cases of DS from DS centres have CHDs and 88 (10...
November 19, 2017: Eastern Mediterranean Health Journal, la Revue de Santé de la Méditerranée Orientale
https://www.readbyqxmd.com/read/29173597/congenital-heart-disease-and-neurodevelopment-clinical-manifestations-genetics-mechanisms-and-implications
#17
REVIEW
Sarah N Nattel, Laura Adrianzen, Erica C Kessler, Gregor Andelfinger, Mathieu Dehaes, Gabriel Côté-Corriveau, M Pilar Trelles
Children with congenital heart disease (CHD) are at increased risk of neurodevelopmental disorders (NDDs) and psychiatric conditions. These include cognitive, adaptive, motor, speech, behavioural, and executive functioning deficits, as well as autism spectrum disorder and psychiatric conditions. Structural and functional neuroimaging have demonstrated brain abnormalities in young children with CHD before undergoing surgical repair, likely as a result of an in utero developmental insult. Surgical factors do not seem to play a significant role in neurodevelopmental outcomes...
December 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/29170358/cardiopulmonary-fitness-in-children-with-congenital-heart-diseases-versus-healthy-children
#18
Pascal Amedro, Arthur Gavotto, Sophie Guillaumont, Helena Bertet, Marie Vincenti, Gregoire De La Villeon, Charlène Bredy, Philippe Acar, Caroline Ovaert, Marie-Christine Picot, Stefan Matecki
OBJECTIVE: We aimed to compare the cardiopulmonary fitness of children with congenital heart diseases (CHD) with that of age-adjusted and gender-adjusted controls. We also intended to identify clinical characteristics associated with maximum oxygen uptake (VO2max) in this population. METHODS AND RESULTS: We included in a cross-sectional multicentre study a total of 798 children (496 CHD and 302 controls) who underwent a complete cardiopulmonary exercise test (CPET)...
November 23, 2017: Heart: Official Journal of the British Cardiac Society
https://www.readbyqxmd.com/read/29162281/targeted-next-generation-sequencing-identified-adamts5-as-novel-genetic-substrate-in-patients-with-bicuspid-aortic-valve
#19
Xiaoping Lin, Xianbao Liu, Lihan Wang, Jubo Jiang, Yinghao Sun, Qifeng Zhu, Zexin Chen, Yuxin He, Po Hu, Qiyuan Xu, Feng Gao, Yan Lin, Sanjay Jaiswal, Meixiang Xiang, Jian'an Wang
BACKGROUND: Bicuspid Aortic Valve (BAV) is the most common congenital heart disease, affecting >1% of the general population. Up to date, three genes, NOTCH1, GATA5 and SMAD6, have been linked to the isolated form of BAV. However, potential genetic determinants remain largely unknown in most BAV patients. MATERIAL AND METHODS: Targeted next-generation sequencing of 7 BAV candidate genes (NOTCH1, GATA5, SMAD6, NOS3, ADAMTS5, Alk2 and SMAD2) was performed in 32 BAV patients...
November 14, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29133208/homozygous-loss-of-function-brca1-variant-causing-a-fanconi-anemia-like-phenotype-a-clinical-report-and-review-of-previous-patients
#20
Bruna L Freire, Thais K Homma, Mariana F A Funari, Antônio M Lerario, Aline M Leal, Elvira D R P Velloso, Alexsandra C Malaquias, Alexander A L Jorge
BACKGROUND: Fanconi Anemia (FA) is a rare and heterogeneous genetic syndrome. It is associated with short stature, bone marrow failure, high predisposition to cancer, microcephaly and congenital malformation. Many genes have been associated with FA. Previously, two adult patients with biallelic pathogenic variant in Breast Cancer 1 gene (BRCA1) had been identified in Fanconi Anemia-like condition. CLINICAL REPORT: The proband was a 2.5 year-old girl with severe short stature, microcephaly, neurodevelopmental delay, congenital heart disease and dysmorphic features...
November 10, 2017: European Journal of Medical Genetics
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