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https://www.readbyqxmd.com/read/28062939/early-transverse-tubule-development-begins-in-utero-in-the-sheep-heart
#1
Michelle L Munro, Christian Soeller
The ventricular cardiomyocytes of adult mammals contain invaginations of the plasma membrane known as transverse (t)-tubules. These regular structures are essential for the synchronisation of excitation-contraction (EC) coupling throughout the cell, which is a vital process for cardiac function. T-tubules form a close association with the sarcoplasmic reticulum (SR) to form junctions, where several key proteins involved in EC coupling are localised, including the SR calcium release channels-the ryanodine receptors (RyR)...
January 6, 2017: Journal of Muscle Research and Cell Motility
https://www.readbyqxmd.com/read/28034463/glucose-transporters-in-healthy-heart-and-in-cardiac-disease
#2
REVIEW
Leszek Szablewski
Heart consumes more energy than any other organ. It can utilize various metabolic substrates as a source of energy. The primary substrates are free fatty acids, especially long-chain fatty acids and glucose. The lipid bilayer of plasmalemma is impermeable for glucose. Therefore, glucose transport across the plasma membrane is mediated via glucose transporters. In human, cardiac cells are expressed as 2 families of glucose transporters: GLUTs and SGLTs. These transport proteins are GLUT1, GLUT3, GLUT8, GLUT10, GLUT11, GLUT12 and SGLT1...
December 21, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28029179/prenatal-diagnosis-of-congenital-heart-diseases-by-fetal-echocardiography-in-second-trimester-a-chinese-multicenter-study
#3
Chen Chu, Yingliu Yan, Yunyun Ren, Xiaotian Li, Yonghao Gui
INTRODUCTION: The objective of our study was to evaluate the performance of detailed fetal echocardiography by skilled obstetric physician sonologists in the diagnosis of congenital heart disease (CHD) in a Chinese population. MATERIAL AND METHODS: This investigation included a multicenter prospective cohort of 10,259 pregnant women attending ten regional tertiary hospitals in China. The inclusion criteria were singleton pregnancy and gestational age 18 ~ ≤28 weeks...
December 28, 2016: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28018896/factors-influencing-neurodevelopment-after-cardiac-surgery-during-infancy
#4
REVIEW
Hedwig Hubertine Hövels-Gürich
Short- and long-term neurodevelopmental (ND) disabilities with negative impact on psychosocial and academic performance, quality of life, and independence in adulthood are known to be the most common sequelae for surviving children after surgery for congenital heart disease (CHD). This article reviews influences and risk factors for ND impairment. For a long time, the search for independent risk factors was focused on the perioperative period and modalities of cardiopulmonary bypass (CPB). CPB operations to ensure intraoperative vital organ perfusion and oxygen supply with or without circulatory arrest or regional cerebral perfusion bear specific risks...
2016: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28002851/prenatal-ultrasonographic-diagnosis-of-cataract-in-utero-manifestations-of-cryptic-disease
#5
Eran Ashwal, Asaf Achiron, Yinon Gilboa, Michal Berkenstadt, Mordecai Rosner, Reuven Achiron
Purpose To report and review our experience with antenatal evaluation for fetuses diagnosed with congenital cataract. Materials and Methods We retrospectively identified pregnancies diagnosed with fetal cataract during antenatal ultrasound. Evaluation of fetal eyes included intraocular anatomy and biometry. Data on fetal malformations, serology and fetal karyotype were collected. Results 8 cases, identified over the course of 10 years, were reviewed. Week 15 was the mean time for diagnosis (range 11 - 34)...
December 21, 2016: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/27995289/the-fetus-with-ectopia-cordis-experience-and-expectations-from-two-centers
#6
Maria C Escobar-Diaz, Sherzana Sunderji, Wayne Tworetzky, Anita J Moon-Grady
Ectopia cordis (EC) is a rare congenital anomaly often associated with congenital heart disease (CHD). There is a lack of contemporary information on EC diagnosed prenatally. We sought to combine the experiences of two regional referral centers in order to evaluate current outcomes for EC. Clinical, echocardiographic features and perinatal outcomes of fetuses with EC managed at two large cardiac centers from 1995 to 2014 were retrospectively reviewed. Seventeen fetuses with EC were diagnosed at a median gestational age of 23 weeks (range 17-36)...
December 19, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27988927/cardiac-remodelling-in-a-baboon-model-of-intrauterine-growth-restriction-mimics-accelerated-ageing
#7
Anderson H Kuo, Cun Li, Jinqi Li, Hillary F Huber, Peter W Nathanielsz, Geoffrey D Clarke
KEY POINTS: Rodent models of intrauterine growth restriction (IUGR) successfully identify mechanisms that can lead to short-term and long-term detrimental cardiomyopathies but differences between rodent and human cardiac physiology and placental-fetal development indicate a need for models in precocial species for translation to human development. We developed a baboon model for IUGR studies using a moderate 30% global calorie restriction of pregnant mothers and used cardiac magnetic resonance imaging to evaluate offspring heart function in early adulthood...
November 6, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27931546/maternal-and-fetal-outcomes-in-pregnant-women-undergoing-balloon-mitral-valvotomy-for-rheumatic-mitral-stenosis
#8
Desabandhu Vinayakumar, G V Vinod, Suresh Madhavan, Mangalath Narayanan Krishnan
BACKGROUND: Rheumatic mitral stenosis constitutes a major cause of acquired heart disease complicating pregnancy in India. In the present study, we have studied the fetal and maternal outcomes of women undergoing balloon mitral valvotomy during pregnancy. METHODS AND RESULTS: 49 pregnant ladies were included in this study in whom balloon mitral valvotomy was performed. The mean age of these patients was 25.7±3.1 years. The mean gestational age was 23.5±5.2 weeks (12-36 weeks)...
November 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27928837/prenatal-diagnosis-of-idiopathic-infantile-arterial-calcification-without-fetal-hydrops
#9
Yan Yi, Tong Tong, Tao Liu, Qi Lin, Yi Xiong, Jinfeng Xu
Idiopathic infantile arterial calcification (IIAC) is a rare autosomal recessive disease that is characterized by extensive calcification of the internal elastic lamina and intimal proliferation of large- and medium-sized arteries, including the aortic, coronary, pulmonary, and iliac arteries. Most reported cases of IIAC were diagnosed in the neonatal periods. Prenatal diagnosis of this condition is extremely rare and is usually made in the third trimester when fetuses had nonimmune hydrops together with aortic and pulmonary calcification...
December 8, 2016: Echocardiography
https://www.readbyqxmd.com/read/27928260/emergency-redo-mitral-valve-replacement-immediately-after-caesarean-section
#10
İbrahim Duvan, Ümit Pınar Sungur, Burak Emre Onuk, Mehmet Şanser Ateş, İbrahim Sami Karacan, Murat Kurtoğlu
Surgery for heart diseases during pregnancy, especially necessitating cardiopulmonary bypass, is believed to trigger maternal and fetal risks and should be performed only when medical therapy has been unsuccessful to alleviate the cardiac decompensation. A 33-year-old pregnant woman in her 33rd week of gestation was admitted to our hospital. She had rheumatic mitral valvular stenosis and had undergone mitral valve replacement (MVR) with a mechanical prosthesis 11 years earlier in another center. Echocardiography revealed a thrombotic mass obstructing the leaflets of the mechanical mitral valve...
April 13, 2016: Journal of Tehran Heart Center
https://www.readbyqxmd.com/read/27913750/congenital-heart-block-and-immune-mediated-sensorineural-hearing-loss-possible-cross-reactivity-of-immune-response
#11
C Bason, I Pagnini, A Brucato, S Maestroni, A Puccetti, C Lunardi, R Cimaz
Immune-mediated sensorineural hearing loss may complicate systemic autoimmune diseases. We have previously reported the presence of antibodies directed against inner ear antigens in patients with Cogan syndrome, a disease characterized by sudden hearing loss and interstitial keratitis. Such autoantibodies cross-react with an epitope of SSA/Ro60 protein. Anti-Ro/SSA antibodies in pregnant women cross the placenta and reach the fetal tissues inducing an immune-mediated damage of the cardiac conduction system...
December 2, 2016: Lupus
https://www.readbyqxmd.com/read/27907850/automated-annotation-and-quantitative-description-of-ultrasound-videos-of-the-fetal-heart
#12
Christopher P Bridge, Christos Ioannou, J Alison Noble
Interpretation of ultrasound videos of the fetal heart is crucial for the antenatal diagnosis of congenital heart disease (CHD). We believe that automated image analysis techniques could make an important contribution towards improving CHD detection rates. However, to our knowledge, no previous work has been done in this area. With this goal in mind, this paper presents a framework for tracking the key variables that describe the content of each frame of freehand 2D ultrasound scanning videos of the healthy fetal heart...
November 19, 2016: Medical Image Analysis
https://www.readbyqxmd.com/read/27893464/the-h3k9-dimethyltransferases-ehmt1-2-protect-against-pathological-cardiac-hypertrophy
#13
Bernard Thienpont, Jan Magnus Aronsen, Emma Louise Robinson, Hanneke Okkenhaug, Elena Loche, Arianna Ferrini, Patrick Brien, Kanar Alkass, Antonio Tomasso, Asmita Agrawal, Olaf Bergmann, Ivar Sjaastad, Wolf Reik, Hywel Llewelyn Roderick
Cardiac hypertrophic growth in response to pathological cues is associated with reexpression of fetal genes and decreased cardiac function and is often a precursor to heart failure. In contrast, physiologically induced hypertrophy is adaptive, resulting in improved cardiac function. The processes that selectively induce these hypertrophic states are poorly understood. Here, we have profiled 2 repressive epigenetic marks, H3K9me2 and H3K27me3, which are involved in stable cellular differentiation, specifically in cardiomyocytes from physiologically and pathologically hypertrophied rat hearts, and correlated these marks with their associated transcriptomes...
January 3, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27878625/reference-ranges-of-fetal-cardiac-biometric-parameters-using-three-dimensional-ultrasound-with-spatiotemporal-image-correlation-m%C3%A2-mode-and-their-applicability-in-congenital-heart-diseases
#14
Giselle Darahem Tedesco, Marilim de Souza Bezerra, Fernanda Silveira Bello Barros, Wellington P Martins, Luciano Marcondes Machado Nardozza, Milene Carvalho Carrilho, Antonio Fernandes Moron, Francisco Herlânio Costa Carvalho, Liliam Cristine Rolo, Edward Araujo Júnior
To determine reference values for fetal heart biometric parameters using the spatiotemporal image correlation (STIC) M mode and their applicability in congenital heart diseases (CHDs). A cross-sectional prospective study was conducted with 300 singleton pregnancies between 20 and 33 + 6 weeks of gestation. Right ventricular wall thickness (RVWT), interventricular septum thickness (IVST), and left ventricular wall thickness (LVWT) were measured off-line using the STIC-M mode with the cursor perpendicular to the interventricular septum...
November 23, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27869889/-anmco-sicp-sigo-consensus-document-pregnancy-and-congenital-heart-disease
#15
Innocenzo Bianca, Giovanna Geraci, Michele Massimo Gulizia, Gabriele Egidy-Assenza, Chiara Barone, Marcello Campisi, Annalisa Alaimo, Rachele Adorisio, Francesca Comoglio, Silvia Favilli, Gabriella Agnoletti, Maria Gabriella Carmina, Massimo Chessa, Berardo Sarubbi, Maurizio Mongiovì, Maria Giovanna Russo, Sebastiano Bianca, Giuseppe Canzone, Marco Bonvicini, Elsa Viora, Marco Poli
The success of cardiac surgery over the past 50 years has increased numbers and median age of survivors with congenital heart disease (CHD). Adults now represent two-thirds of patients with CHD; in the United States alone the number is estimated to exceed 1 million.In this population many affected women reach reproductive age and wish to have children. While in many CHD patients pregnancy can be accomplished successfully, some special situations with complex anatomy, iatrogenic or residual pathology are associated with an increased risk of severe maternal and fetal complications...
September 2016: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/27845231/streptozotocin-diabetes-increases-mrna-expression-of-ketogenic-enzymes-in-the-rat-heart
#16
George A Cook, Eduard N Lavrentyev, Kevin Pham, Edwards A Park
BACKGROUND: Diabetic cardiomyopathy develops in insulin-dependent diabetic patients who have no hypertension, cardiac hypertrophy or vascular disease. Diabetes increases cardiac fatty acid oxidation, but cardiac hypertrophy limits fatty acid oxidation. Here we examined effects of diabetes on gene expression in rat hearts. METHODS: We used oligonucleotide microarrays to examine effects of insulindependent diabetes in the rat heart. RTQ PCR confirmed results of microarrays...
February 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27828868/prenatal-diagnosis-and-genetic-discoveries-of-an-intracranial-mixed-neuronal-glial-tumor-a-case-report-and-literature-review
#17
Lijuan Sun, Qingqing Wu, Yan Pei, Jinghua Li, Jintang Ye, Wenxue Zhi, Yan Liu, Puqing Zhang
BACKGROUND: Congenital intracranial tumors as a group are quite rare, representing only 0.5% to 1.5% of all pediatric brain neoplasms. CASE REPORT: We reported a case of congenital mixed neuronal-glial tumor detected by ultrasound at 30 weeks of gestation. It showed that the tumor was 2.5 × 2.3 × 2.1 cm in size, located in the sellar region, regular shape, and slightly heterogeneous solid mass with a little cystic component. No color flow was present inside the tumor, but the peripheral encirclement by arterial circle of Willis...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27822638/cardiac-changes-in-apoptosis-inflammation-oxidative-stress-and-nitric-oxide-system-induced-by-prenatal-and-postnatal-zinc-deficiency-in-male-and-female-rats
#18
Lorena Vanesa Juriol, María Natalia Gobetto, Facundo Mendes Garrido Abregú, Marina Ercilia Dasso, Gonzalo Pineda, Leandro Güttlein, Andrea Carranza, Osvaldo Podhajcer, Jorge Eduardo Toblli, Rosana Elesgaray, Cristina Teresa Arranz, Analía Lorena Tomat
PURPOSE: Zinc restriction during fetal and postnatal development could program cardiovascular diseases in adulthood. The aim of this study was to determine the effects of zinc restriction during fetal life, lactation, and/or post-weaning growth on cardiac inflammation, apoptosis, oxidative stress, and nitric oxide system of male and female adult rats. METHODS: Wistar rats were fed a low- or a control zinc diet during pregnancy and up to weaning. Afterward, offspring were fed either a low- or a control zinc diet until 81 days of life...
November 7, 2016: European Journal of Nutrition
https://www.readbyqxmd.com/read/27816335/developmental-changes-in-aortic-mechanical-properties-in-normal-fetuses-and-fetuses-with-cardiovascular-disease
#19
Mio Taketazu, Masaya Sugimoto, Hirofumi Saiki, Hirotaka Ishido, Satoshi Masutani, Hideaki Senzaki
BACKGROUND: We hypothesized that fetal aortic mechanical properties assessed by aortic diameter (AoD) and flow show maturational changes during the gestational period, and that these properties are different in fetuses with congenital heart diseases and fetuses with normal development. METHODS: Phasic changes in ascending AoD along with Doppler flow profile were measured in 84 consecutive normal fetuses (gestational age, 18-36 weeks) and in 30 consecutive fetuses with cardiovascular diseases (gestational age, 22-39 weeks)...
September 28, 2016: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/27816156/cardiac-lesions-in-the-critical-care-setting
#20
REVIEW
Manisha Gandhi, Amir A Shamshirsaz
The long-held belief that pregnancy is absolutely contraindicated in maternal cardiovascular disease is no longer justifiable using evidence-base medicine. There are some conditions in which pregnancy is contraindicated, and high maternal risk and poor fetal outcome can be predicted. However, in many women with heart disease, a more favorable maternal and fetal outcome is expected. This article focusses on the cardiac conditions that require more attention and have the potential to require observation in the intensive care unit setting...
December 2016: Obstetrics and Gynecology Clinics of North America
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