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https://www.readbyqxmd.com/read/28406175/nkx2-5-and-sarcospan-genetically-interact-in-the-development-of-the-muscular-ventricular-septum-of-the-heart
#1
Adam A Panzer, Suk D Regmi, DePorres Cormier, Megan T Danzo, Iuan-Bor D Chen, Julia B Winston, Alayna K Hutchinson, Diana Salm, Claire E Schulkey, Rebecca S Cochran, David B Wilson, Patrick Y Jay
The muscular ventricular septum separates the flow of oxygenated and de-oxygenated blood in air-breathing vertebrates. Defects within it, termed muscular ventricular septal defects (VSDs), are common, yet less is known about how they arise than rarer heart defects. Mutations of the cardiac transcription factor NKX2-5 cause cardiac malformations, including muscular VSDs. We describe here a genetic interaction between Nkx2-5 and Sarcospan (Sspn) that affects the risk of muscular VSD in mice. Sspn encodes a protein in the dystrophin-glycoprotein complex...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28403078/renal-dysplasia-characterized-by-prominent-cartilaginous-metaplasia-lesions-in-vacterl-association-a-case-report
#2
Takeo Nakaya, Taiju Hyuga, Yukichi Tanaka, Shina Kawai, Hideo Nakai, Toshiro Niki, Akira Tanaka
BACKGROUND: Renal dysplasia is the most important cause of end-stage renal disease in children. The histopathological characteristic of dysplasia is primitive tubules with fibromuscular disorganization. Renal dysplasia often includes metaplastic cartilage. Metaplastic cartilage in renal dysplasia has been explained as occurring secondary to vesicoureteral reflux (VUR). Additionally, renal dysplasia is observed in renal dysplasia-associated syndromes, which are combinations of multiple developmental malformations and include VACTERL association...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28401252/evaluation-of-ventricular-septal-defect-with-special-reference-to-the-spontaneous-closure-rate-subaortic-ridge-and-aortic-valve-prolapse-ii
#3
Ayse Guler Eroglu, Sezen Ugan Atik, Esma Sengenc, Gulnaz Cig, Irfan Levent Saltik, Funda Oztunc
The medical records of 2283 patients with ventricular septal defect (VSD) were reviewed to determine spontaneous closure, left ventricular-to-right atrial shunt, subaortic ridge, and aortic valve prolapse. One thousand eight hundred and twenty-three patients had been followed 1 month to 26 years (median 4 years) by echocardiography. Most of 460 patients could not be followed due to transportation of the institution. VSD was perimembranous in 68.8% (1255), trabecular muscular in 21.7% (395), muscular outlet in 6% (109), muscular inlet in 2...
April 12, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28398369/-percutaneous-treatment-of-complex-post-myocardial-infarction-ventricular-septal-defect-case-report-and-literature-review
#4
Elisabetta Moscarella, Giuseppe Santoro, Gianpiero Gaio, Teresa Palladino, Angelo Fabio D'Aiello, Heba Talat Mahmoud, Maurizio Cappelli Bigazzi, Maria Giovanna Russo
Post-myocardial infarction (MI) ventricular septal defects (VSD) are a rare but life-threatening complication of acute MI, with very high mortality rates even if timely approached by surgical repair. Transcatheter closure is an attractive alternative to surgery. However, this option is currently deemed challenging and often unsuitable in complex VSD. We report the case of a young woman in poor hemodynamic conditions due to a complex post-MI VSD. A two-step percutaneous VSD closure was successfully performed adopting a patient-tailored approach based on a throughout knowledge of the anatomic and functional picture using both commercially available dedicated and off-label devices...
February 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28397952/aortic-valve-prolapse-misdiagnosed-as-aortic-sinus-aneurysm-in-patients-with-ventricular-septal-defect-analysis-of-the-echocardiographic-findings
#5
Guobing Hu, Xiangming Zhu, Fang Song
To retrospectively analyzed the preoperative echocardiographic findings of 9 patients with doubly committed ventricular septal defect (VSD) associated with aortic valve prolapse and to summarize the reasons for misdiagnosis. Methods: This retrospective study was conducted in Yijishan Hospital, Wannan, Anhui, Chinabetween June 2005 and May 2015. Using transthoracic echocardiography (TTE), 92 patients were diagnosed with doubly committed VSD associated with rupture of an aortic sinus aneurysm. The operative findings proved to be in accordance with the echocardiographic findings in 83 patients...
April 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28369397/significant-survival-advantage-of-high-pulmonary-vein-index-and-the-presence-of-native-pulmonary-artery-in-pulmonary-atresia-with-ventricular-septal-defect-and-major-aortopulmonary-collateral-arteries-results-from-preoperative-computed-tomography-angiography
#6
Qianjun Jia, Jianzheng Cen, Jian Zhuang, Xiaomei Zhong, Xiaoqing Liu, Jiahua Li, Changhong Liang, Meiping Huang
OBJECTIVES: The prognosis of pulmonary atresia with ventricular septal defect and major aortopulmonary collateral arteries (PA-VSD-MAPCAs) after surgery shows substantial clinical heterogeneity and predictors for outcomes are lacking. This study aimed to assess the predictive value of preoperative cardiac computed tomography angiography (CTA) for survival in patients with PA-VSD-MAPCAs. METHODS: We retrospectively analysed PA-VSD-MAPCA patients with preoperative CTA who underwent both right ventricular outflow tract reconstruction and MAPCA unifocalization ( n  = 24) or pulmonary artery rehabilitation ( n  = 28)...
March 28, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28369343/absorbable-pulmonary-artery-banding-a-strategy-for-reducing-reoperations
#7
Michael Daley, Christian P Brizard, Igor E Konstantinov, Johann Brink, Bryn Jones, Yves d'Udekem
OBJECTIVES: Pulmonary artery banding (PAB) remains in the armamentarium of techniques for several congenital cardiac anomalies, but necessitates a reoperation for eventual removal. We sought to assess the efficacy of an absorbable PAB in obviating the requirement for reoperation. METHODS: From 2003 to 2015, 45 consecutive patients with a median age of 1.6 months (2 days-11 months) underwent placement of a polydioxanone absorbable PAB. In 28 patients (62%), the band was placed concomitantly to a ventricular septal defect (VSD) closure and in 17 (38%), the band was the sole procedure for the VSDs...
April 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28365261/seven-coils-in-1-heart-therapeutic-option-for-multiple-vsd
#8
Robert Sabiniewicz, Piotr Weryński
No abstract text is available yet for this article.
March 24, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28360219/a-new-mechanism-of-voltage-dependent-gating-exposed-by-kv10-1-channels-interrupted-between-voltage-sensor-and-pore
#9
Adam P Tomczak, Jorge Fernández-Trillo, Shashank Bharill, Ferenc Papp, Gyorgy Panyi, Walter Stühmer, Ehud Y Isacoff, Luis A Pardo
Voltage-gated ion channels couple transmembrane potential changes to ion flow. Conformational changes in the voltage-sensing domain (VSD) of the channel are thought to be transmitted to the pore domain (PD) through an α-helical linker between them (S4-S5 linker). However, our recent work on channels disrupted in the S4-S5 linker has challenged this interpretation for the KCNH family. Furthermore, a recent single-particle cryo-electron microscopy structure of KV10.1 revealed that the S4-S5 linker is a short loop in this KCNH family member, confirming the need for an alternative gating model...
March 30, 2017: Journal of General Physiology
https://www.readbyqxmd.com/read/28358902/screening-for-ampa-receptor-auxiliary-subunit-specific-modulators
#10
Caleigh M Azumaya, Emily L Days, Paige N Vinson, Shaun Stauffer, Gary Sulikowski, C David Weaver, Terunaga Nakagawa
AMPA receptors (AMPAR) are ligand gated ion channels critical for synaptic transmission and plasticity. Their dysfunction is implicated in a variety of psychiatric and neurological diseases ranging from major depressive disorder to amyotrophic lateral sclerosis. Attempting to potentiate or depress AMPAR activity is an inherently difficult balancing act between effective treatments and debilitating side effects. A newly explored strategy to target subsets of AMPARs in the central nervous system is to identify compounds that affect specific AMPAR-auxiliary subunit complexes...
2017: PloS One
https://www.readbyqxmd.com/read/28353606/prophylactic-vacuum-sealing-drainage-vsd-in-the-prevention-of-postoperative-surgical-site-infections-in-pediatric-patients-with-contaminated-laparotomy-incisions
#11
Bailin Chen, Fabao Hao, Yang Yang, Qingjuan Shang, Chunbao Guo
Surgical site infection (SSI) continues to be an issue in abdominal surgery, especially for contaminated (class III) and dirty-infected (class IV) wounds. Vacuum sealing drainage (VSD) was reported effective in the management of various types of wounds or skin grafts. Our goal was to investigate the efficacy of prophylactic VSD to better orient their medicosurgical care of high-risk incisions following laparotomy in a pediatric population.A total of 331 pediatric patients with contaminated (class III) and dirty-infected (class IV) wounds following emergency laparotomy were retrospectively reviewed between January 2005 and January 2013...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28349975/mechanism-of-functional-interaction-between-potassium-channel-kv1-3-and-sodium-channel-navbeta1-subunit
#12
Tomoya Kubota, Ana M Correa, Francisco Bezanilla
The voltage-gated potassium channel subfamily A member 3 (Kv1.3) dominantly expresses on T cells and neurons. Recently, the interaction between Kv1.3 and NavBeta1 subunits has been explored through ionic current measurements, but the molecular mechanism has not been elucidated yet. We explored the functional interaction between Kv1.3 and NavBeta1 through gating current measurements using the Cut-open Oocyte Voltage Clamp (COVC) technique. We showed that the N-terminal 1-52 sequence of hKv1.3 disrupts the channel expression on the Xenopus oocyte membrane, suggesting a potential role as regulator of hKv1...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28346832/tcf21-rs12190287-polymorphisms-are-associated-with-ventricular-septal-defects-in-a-chinese-population
#13
Liping Yang, Xiaobo Gao, Haiyan Luo, Qiuyu Huang, Dongmei Su, Xinyu Tan, Cailing Lu
AIMS: TCF21 knockout mice display cardiac defects, including ventricular septal defects (VSDs). Functional rs12190287 polymorphisms located within the 3' untranslated region (3'-UTR) of TCF21 were associated with a risk of coronary heart disease in the European and Eastern populations. However, whether rs12190287 polymorphisms in the TCF21-3'UTR confer predisposition to congenital heart disease (CHD) is unclear. METHODS: A case-control study was designed consisting of 781 nonsyndromic VSD patients and 867 non-CHD control subjects...
March 27, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28315566/directly-ventricular-septal-defect-closure-without-using-arteriovenous-wire-loop-our-adult-case-series-using-transarterial-retrograde-approach
#14
Nihat Pekel, Ertuğrul Ercan, Mehmet Emre Özpelit, Ferhat Özyurtlu, Akar Yılmaz, Caner Topaloğlu, Serkan Saygı, Serkan Yakan, İstemihan Tengiz
OBJECTIVE: The standard transcatheter ventricular septal defects (VSD) closure procedure is established with arteriovenous (AV) loop and is called as antegrade approach. The directly retrograde transarterial VSD closure without using AV loop might be better option as shortens the procedure time and decreases radiation exposure. METHODS: Our series consist of twelve sequential adult cases with congenital VSDs (seven with perimembranous, four with muscular, one with postoperative residuel VSD)...
February 21, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28290607/homemade-device-induced-negative-pressure-promotes-wound-healing-more-efficiently-than-vsd-induced-positive-pressure-by-regulating-inflammation-proliferation-and-remodeling
#15
Jinyan Liu, Feng Hu, Jintian Tang, Shijie Tang, Kun Xia, Song Wu, Chaoqi Yin, Shaohua Wang, Quanyong He, Huiqing Xie, Jianda Zhou
Vacuum sealing drainage (VSD) is an effective technique used to promote wound healing. However, recent studies have shown that it exerts positive pressure (PP) rather than negative pressure (NP) on skin. In this study, we created a homemade device that could maintain NP on the wound, and compared the therapeutic effects of VSD-induced PP to those of our homemade device which induced NP on wound healing. The NP induced by our device required less time for wound healing and decreased the wound area more efficiently than the PP induced by VSD...
April 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28289377/loss-of-saltation-and-presynaptic-action-potential-failure-in-demyelinated-axons
#16
Mustafa S Hamada, Marko A Popovic, Maarten H P Kole
In cortical pyramidal neurons the presynaptic terminals controlling transmitter release are located along unmyelinated axon collaterals, far from the original action potential (AP) initiation site, the axon initial segment (AIS). Once initiated, APs will need to reliably propagate over long distances and regions of geometrical inhomogeneity like branch points (BPs) to rapidly depolarize the presynaptic terminals and confer temporally precise synaptic transmission. While axon pathologies such as demyelinating diseases are well established to impede the fidelity of AP propagation along internodes, to which extent myelin loss affects propagation along BPs and axon collaterals is not well understood...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28285983/assessing-misclassification-of-vaccination-status-implications-for-studies-of-the-safety-of-the-childhood-immunization-schedule
#17
Matthew F Daley, Jason M Glanz, Sophia R Newcomer, Michael L Jackson, Holly C Groom, Marlene M Lugg, Huong Q McLean, Nicola P Klein, Eric S Weintraub, Michael M McNeil
BACKGROUND: To address public concern about the safety of the childhood immunization schedule, the Institute of Medicine recommended observational studies comparing adverse health outcomes of fully vaccinated children to children under-vaccinated due to parental choice. Misclassification of vaccination status could bias such studies. OBJECTIVE: To assess risk of misclassification of vaccination status within the Vaccine Safety Datalink (VSD). DESIGN/METHODS: A retrospective cohort study was conducted in three phases...
April 4, 2017: Vaccine
https://www.readbyqxmd.com/read/28274882/vacuum-sealing-drainage-as-a-pre-surgical-adjunct-in-the-treatment-of-complex-open-hand-injuries-report-of-17-cases
#18
Xiao-Feng Niu, Jian-Hua Yi, Guo-Qin Zha, Jun Hu, Yun-Jiang Liu, Liang-Bao Xiao
BACKGROUND: Few studies have been conducted to explore the use of the vacuum sealing drainage (VSD) technique in complex hand injuries. The aim of this study was to report outcomes in patients with complex hand injuries receiving VSD as a coadjuvant treatment prior to second-stage surgery. METHODS: This case series study retrospectively reviewed the patients who underwent VSD for treatment of hand injuries. Inclusion criteria for the study were: (1) traumatic soft tissue defects of the hand and wrist, accompanied by different degrees of injury and exposure of bone, tendon, or blood vessel; (2) the wound surface of hand and wrist was seriously contaminated and direct wound closure was not possible; and (3) the soft tissues of hand and wrist were seriously lacerated or avulsed, and showed necrosis or acute infection...
March 5, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28269146/motion-invariant-contrast-enhancement-of-optical-imaging-data-in-the-gradient-domain
#19
Philipp Flotho, Alejandro Romero-Santiago, Karsten Schwerdtfeger, Jacek Szczygielski, Matthias Hulser, Lars Haab, Daniel J Strauss
Functional optical imaging (OI) of intrinsic signals (like blood oxygenation coupled reflection changes) and of extrinsic properties of voltage sensitive probes (like voltage-sensitive dyes (VSD)) forms a group of neuroimaging techniques that possess up to date highest temporal and spatial resolution on a meso-to macroscopic scale. An inherent problem of OI is a very low signal to noise ratio (SNR), which restricts the recordings to be completely motionless and requires detailed knowledge of the properties of the different noise sources...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28269138/statistical-identification-of-stimulus-activated-network-nodes-in-multi-neuron-voltage-sensitive-dye-optical-recordings
#20
Elham Fathiazar, Jorn Anemuller, Jutta Kretzberg
Voltage-Sensitive Dye (VSD) imaging is an optical imaging method that allows measuring the graded voltage changes of multiple neurons simultaneously. In neuroscience, this method is used to reveal networks of neurons involved in certain tasks. However, the recorded relative dye fluorescence changes are usually low and signals are superimposed by noise and artifacts. Therefore, establishing a reliable method to identify which cells are activated by specific stimulus conditions is the first step to identify functional networks...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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