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Heart blockage

Debarghya China, Manas K Nag, K M Mandana, Anup K Sadhu, Pabitra Mitra, Chandan Chakraborty, Debarghya China, Manas K Nag, K M Mandana, Anup K Sadhu, Pabitra Mitra, Chandan Chakraborty, Chandan Chakraborty, Manas K Nag, Debarghya China, Pabitra Mitra, Anup K Sadhu, K M Mandana
This paper presents a novel methodology for automated detection and extraction of the lumen wall from Intravascular Ultrasound (IVUS) frames. IVUS is an in-vivo pull back imaging technique and provides a sequential frame of images for diagnosis of atherosclerotic heart disease. The detection and segmentation of lumen wall is necessary for predicting the arterial wall blockage. Lumen wall is recognized and segmented with the help of seed refinement and random walks algorithms, in tunica and lumen area. The proposed methodology was tested on 147 frames of 13 patients...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Xiaojv Xiong, Yu Liu, Yang Mei, Jianye Peng, Zhiqiang Wang, Bin Kong, Peng Zhong, Liang Xiong, Dajun Quan, Qi Li, Guangji Wang, He Huang
Myeloid differentiation 1 (MD-1), a secreted protein interacting with radioprotective 105 (RP105), plays an important role in Toll-like receptor 4 (TLR4) signalling pathway. Previous studies showed that MD-1 may be restricted in the immune system. In this study, we demonstrated for the first time that MD-1 was highly expressed in both human and animal hearts. We also discovered that cardiac-specific overexpression of MD-1 significantly attenuated pressure overload-induced cardiac hypertrophy, fibrosis, and dysfunction, whereas loss of MD-1 had the opposite effects...
February 6, 2017: Scientific Reports
Karl J Föhr, Uwe Knippschild, Anna Herkommer, Michael Fauler, Christian Peifer, Michael Georgieff, Oliver Adolph
Background and Purpose IC261 (3-[(2,4,6-trimethoxyphenyl)methylidenyl]-indolin-2-one) has previously been introduced as an isoform specific inhibitor of casein kinase 1 (CK1) causing cell cycle arrest or cell death of established tumor cell lines. However, it is reasonable to assume that not all antitumor activities of IC261 are mediated by the inhibition of CK1. Meanwhile there is growing evidence that functional voltage-gated sodium channels are also implicated in the progression of tumors as their blockage suppresses tumor migration and invasion of different tumor cell lines...
February 6, 2017: Investigational New Drugs
Chuphong Thongnak, Pornprot Limprasert, Duangkamol Tangviriyapaiboon, Suchaya Silvilairat, Apichaya Puangpetch, Ekawat Pasomsub, Chonlaphat Sukasem, Wasun Chantratita
Background. Congenital heart block is characterized by blockage of electrical impulses from the atrioventricular node (AV node) to the ventricles. This blockage can be caused by ion channel impairment that is the result of genetic variation. This study aimed to investigate the possible causative variants in a Thai family with complete heart block by using whole exome sequencing. Methods. Genomic DNA was collected from a family consisting of five family members in three generations in which one of three children in generation III had complete heart block...
2016: Disease Markers
Ana Maria Oliveira Correia da Silva, Emília Alexandra Gaspar Lima da Silva
BACKGROUND AND OBJECTIVES: Transient changes in intraoperative cardiac conduction are uncommon. Rare cases of the development or remission of complete left bundle branch block under general and locoregional anesthesia associated with myocardial ischemia, hypertension, tachycardia, and drugs have been reported. Complete left bundle branch block is an important clinical manifestation in some chronic hypertensive patients, which may also be a sign of coronary artery disease, aortic valve disease, or underlying cardiomyopathy...
December 21, 2016: Revista Brasileira de Anestesiologia
Xiao-Han Jiang, Qing-Qing Wu, Yang Xiao, Yuan Yuan, Zheng Yang, Zhou-Yan Bian, Wei Chang, Qi-Zhu Tang
Evodiamine, a major component of Evodia rutaecarpa, can protect the myocardium against injury induced by atherosclerosis and ischemia-reperfusion. However, the effect of evodiamine against cardiac fibrosis remains unclear. This study aims to investigate the possible effect and mechanism involved in the function of evodiamine on isoproterenol-induced cardiac fibrosis and endothelial-to-mesenchymal transition. Isoproterenol was used to induce cardiac fibrosis in mice, and evodiamine was gavaged simultaneously...
December 23, 2016: Planta Medica
Monali Patil, Samjot Singh Dhillon, Kristopher Attwood, Marwan Saoud, Abdul H Alraiyes, Kassem Harris
INTRODUCTION: Indwelling pleural catheter (IPC), which was initially introduced for the management of recurrent malignant effusions, could be a valuable management option for recurrent benign pleural effusions (BPE) in place of chemical pleurodesis. The purpose of this study is to analyze the efficacy and safety of IPC in the management of refractory non-malignant effusions. METHODS: We conducted a systematic review and meta-analysis on the published literature...
November 11, 2016: Chest
Roy Marshal Wagner, Kamesh Sivagnanam, William Andrew Clark, Jonathan M Peterson
: C1q TNF Related Protein 3 (CTRP3) is a novel adipose tissue derived secreted factor, or adipokine, which has been linked to a number of beneficial biological effects on metabolism, inflammation, and survival signaling in a variety of tissues. However, very little is known about CTRP3 in regards to human health. The purpose of this project was to examine circulating CTRP3 levels in a clinical population, patients with symptoms requiring heart catheterization in order to identify the presence of obstructive coronary artery disease (CAD)...
2016: PeerJ
Ulrike Herberg, Katharina Linden, Oliver Dewald, Eva Gatzweiler, Matthias Seehase, Georg Daniel Duerr, Jonas Dörner, Stephanie Kleppe, Dennis Ladage, Johannes Breuer
BACKGROUND: Pressure-volume loops (PVL) provide vital information regarding ventricular performance and pathophysiology in cardiac disease. Unfortunately, acquisition of PVL by conductance technology is not feasible in neonates and small children due to the available human catheter size and resulting invasiveness. The aim of the study was to validate the accuracy of PVL in small hearts using volume data obtained by real-time three-dimensional echocardiography (3DE) and simultaneously acquired pressure data...
2016: PloS One
Yongbin Wang, Weiqiang Kang, Xu Wang, Meina Chen, Qiaoji Qin, Minglei Guo, Zhiming Ge
BACKGROUND Persistent atrial fibrillation has been indicated to be related with microRNA-28b. However, the exact role of microRNA-28b in persistent atrial fibrillation needs to be further elucidated. Therefore, this study aimed to establish a rat model of persistent atrial fibrillation to investigate the level of microRNA-28b in atrial myocytes and to explore the molecular mechanism involved. MATERIAL AND METHODS A persistent atrial fibrillation model was established in rats by using chronic rapid atrial pacing induction...
August 30, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Xiaoying Ying, Yichao Zhao, Tianbao Yao, Ancai Yuan, Longwei Xu, Lingchen Gao, Song Ding, Hongyi Ding, Jun Pu, Ben He
Ubiquitin-specific protease 18 (USP18), a USP family member, is involved in antiviral activity and cancer inhibition. Although USP18 is expressed in heart, the role of USP18 in the heart and in cardiac diseases remains unknown. Here, we show that USP18 expression is elevated in both human dilated hearts and hypertrophic murine models. Cardiomyocyte-specific overexpression of USP18 in mice significantly blunted cardiac remodeling as evidenced by mitigated myocardial hypertrophy, fibrosis, ventricular dilation, and preserved ejection function, whereas USP18-deficient mice displayed exacerbated cardiac remodeling under the same pathological stimuli...
November 2016: Hypertension
Othman Al Gwairi, Lyna Thach, Wenhua Zheng, Narin Osman, Peter J Little
Age-related macular degeneration (AMD) is a retinal disease evident after the age of 50 that damages the macula in the centre of retina. It leads to a loss of central vision with retained peripheral vision but eventual blindness occurs in many cases. The initiation site of AMD development is Bruch's membrane (BM) where multiple changes occur including the deposition of plasma derived lipids, accumulation of extracellular debris, changes in cell morphology, and viability and the formation of drusen. AMD manifests as early and late stage; the latter involves cell proliferation and neovascularization in wet AMD...
2016: Journal of Ophthalmology
Yang Zhao, Yan Xin, Yongbo Liu, Xuanlong Yi, Yingzhi Liu
BACKGROUD: The purpose of our study is to evaluate the effect of adding dexmedetomidine to epidural ropivacaine in patients undergoing labor epidural analgesia. METHODS: Eighty healthy women were randomly assigned to two groups: control group(R; n=40) received epidural 0.125% ropivacaine for labor analgesia, whereas the study group (D; n=40) received epidural 0.125% ropivacaine with dexmedetomidine in addition. The blood pressure, heart rate, and the severity of pain of the parturient was assessed, the duration of the first stage and the second stage of labor time, the rate of instrumental delivery and the rate of cesarean section were recorded...
August 10, 2016: Clinical Journal of Pain
Nermeen M Abu-Elala, Reham M Abd-Elsalam, Sherif Marouf, Mohamed Abdelaziz, Mohamed Moustafa
The present study was designed to assess the possible causes of the mass mortalities of Nile Tilapia Oreochromis niloticus at El-Behera Governorate, Egypt, in relationship to environmental and microbiotic factors. Water samples were collected from fish farms at different locations and from Lake Edku to analyze water temperature, water pH, salinity, biological oxygen demand, dissolved oxygen, total ammonia nitrogen, and un-ionized ammonia. A number of moribund and freshly dead fish were sampled and submitted to our laboratory for microbiological, molecular, and histopathological examination...
September 2016: Journal of Aquatic Animal Health
Slawomir Wojniusz, Nina Callens, Stefan Sütterlin, Stein Andersson, Jean De Schepper, Inge Gies, Jesse Vanbesien, Kathleen De Waele, Sara Van Aken, Margarita Craen, Claus Vögele, Martine Cools, Ira R Haraldsen
Central precocious puberty (CPP) develops due to premature activation of the hypothalamic-pituitary-gonadal (HPG) axis, resulting in early pubertal changes and rapid bone maturation. CPP is associated with lower adult height and increased risk for development of psychological problems. Standard treatment of CPP is based on postponement of pubertal development by blockade of the HPG axis with gonadotropin releasing hormone analogs (GnRHa) leading to abolition of gonadal sex hormones synthesis. Whereas the hormonal and auxological effects of GnRHa are well-researched, there is a lack of knowledge whether GnRHa treatment influences psychological functioning of treated children, despite the fact that prevention of psychological problems is used as one of the main reasons for treatment initiation...
2016: Frontiers in Psychology
Fu-Long Huang, Robin Y-Y Chiou, Wei-Cheng Chen, Huey-Jiun Ko, Li-Jung Lai, Shu-Mei Lin
Flesh of Basella alba L. mature fruits bearing deep-violet juice provides a novel and potential source of natural colorant. To minimize the pigment purification process and warrant safety acceptability, B. alba colorant powder (BACP) was prepared using mature fruits through a practical batch preparation and subjected to fundamental pigment characterization, food safety assessment and bio-function evaluation. Yield of the dehydrated B. alba colorant powder (BACP) was 37 g/kg fresh fruits. Reconstituted aqueous solution of the BACP exhibited an identical visible spectrum (400-700 nm) as that of fresh juice...
September 2016: Plant Foods for Human Nutrition
Chih-Chung Feng, Chien-Chung Lin, Yi-Ping Lai, Tung-Sheng Chen, Shibu Marthandam Asokan, Jing-Ying Lin, Kuan-Ho Lin, Vijaya Padma Viswanadha, Wei-Wen Kuo, Chih-Yang Huang
The HIF-1α transcriptional factor and the BH-3 only protein BNIP3 are known to play fundamental roles in response to hypoxia. The objective of this research is to investigate the molecular mechanisms and the correlation of HIF-1α, BNIP3 and IGFBP-3 in hypoxia-induced cardiomyocytes injuries. Heart-derived H9c2 cells and neonatal rat ventricular myocytes (NRVMs) were incubated in normoxic or hypoxic conditions. Hypoxia increased HIF-1α expression and activated the downstream BNIP3 and IGFBP-3 thereby triggered mitochondria-dependent apoptosis...
August 2016: Growth Factors
Tülün Öztürk, Eralp Çevikkalp, Funda Nizamoglu, Alper Özbakkaloğlu, İsmet Topcu
OBJECTIVE: This study aimed to investigate the efficacy of femoral block and unilateral spinal anaesthesia on analgesia, haemodynamics and mobilization during endovenous ablation in patients with lower extremity venous insufficiency. METHODS: Forty patients of ASA physical status I and II, with ages ranging between 30 and 45 years, and who were scheduled for endovenous laser ablation for varicose veins were prospectively enrolled in this study. Patients were randomized into a unilateral spinal anaesthesia group (group HS, n=20) or a femoral block group (group F, n=20)...
April 2016: Turkish Journal of Anaesthesiology and Reanimation
Michelle Dreiling, Sabine Bischoff, Rene Schiffner, Sven Rupprecht, Michael Kiehntopf, Harald Schubert, Otto W Witte, Peter W Nathanielsz, Matthias Schwab, Florian Rakers
Prenatal maternal stress can be transferred to the fetus via a catecholamine-dependent decrease of uterine blood flow (UBF). However, it is unclear which group of adrenergic receptors mediates this mechanism of maternal-fetal stress transfer. We hypothesized that in sheep, alpha 1-adrenergic receptors may play a key role in catecholamine mediated UBF decrease, as these receptors are mainly involved in peripheral vasoconstriction and are present in significant number in the uterine vasculature. After chronic instrumentation at 125 ± 1 days of gestation (dGA; term 150 dGA), nine pregnant sheep were exposed at 130 ± 1 dGA to acute isolation stress for one hour without visual, tactile, or auditory contact with their flockmates...
September 2016: Stress: the International Journal on the Biology of Stress
Han Pil Lee, Ji Hyun Bang, Jae-Suk Baek, Hyun Woo Goo, Jeong-Jun Park, Young Hwee Kim
Double outlet right ventricle (DORV) and transposition of the great arteries (TGA) with ventricular septal defect (VSD) and pulmonary stenosis (PS) are complex heart diseases, the treatment of which remains a surgical challenge. The Rastelli procedure is still the most commonly performed treatment. Aortic root translocation including an arterial switch operation is advantageous anatomically since it has a lower possibility of conduit blockage and the left ventricle outflow tract remains straight. This study reports successful aortic root transpositions in two patients, one with DORV with VSD and PS and one with TGA with VSD and PS...
June 2016: Korean Journal of Thoracic and Cardiovascular Surgery
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