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https://www.readbyqxmd.com/read/29351227/differential-association-of-cx37-and-cx40-genetic-variants-in-atrial-fibrillation-with-and-without-underlying-structural-heart-disease
#1
Sebastian Carballo, Anna Pfenniger, David Carballo, Nicolas Garin, Richard W James, François Mach, Dipen Shah, Brenda R Kwak
Atrial fibrillation (AF) appears in the presence or absence of structural heart disease. The majority of foci causing AF are located near the ostia of pulmonary veins (PVs), where cardiomyocytes and vascular smooth muscle cells interdigitate. Connexins (Cx) form gap junction channels and participate in action potential propagation. Genetic variants in genes encoding Cx40 and Cx37 affect their expression or function and may contribute to PV arrhythmogenicity. DNA was obtained from 196 patients with drug-resistant, symptomatic AF with and without structural heart disease, who were referred for percutaneous catheter ablation...
January 19, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29351130/comparative-effectiveness-of-low-volume-time-efficient-resistance-training-versus-endurance-training-in-patients-with-heart-failure
#2
Gregers Winding Munch, Jaya Birgitte Rosenmeier, Morten Petersen, Anders Rasmussen Rinnov, Ulrik Winning Iepsen, Bente Klarlund Pedersen, Stefan Peter Mortensen
PURPOSE: Cardiorespiratory fitness is positively related to heart failure (HF) prognosis, but lack of time and low energy are barriers for adherence to exercise. We, therefore, compared the effect of low-volume time-based resistance exercise training (TRE) with aerobic moderate-intensity cycling (AMC) on maximal and submaximal exercise capacity, health-related quality of life, and vascular function. METHODS: Twenty-eight HF patients (New York Heart Association class I-II) performed AMC (n = 14) or TRE (n = 14)...
January 18, 2018: Journal of Cardiopulmonary Rehabilitation and Prevention
https://www.readbyqxmd.com/read/29350812/a-unified-framework-of-plant-adaptive-strategies-to-drought-crossing-scales-and-disciplines
#3
Florence Volaire
Plant adaptation to drought has been extensively studied at many scales from ecology to molecular biology across a large range of model species. However, the conceptual frameworks underpinning the definition of plant strategies, and the terminology used across the different disciplines and scales are not analogous. 'Drought resistance' for instance refers to plant responses as different as the maintenance of growth and productivity in crops, to the survival and recovery in perennial woody or grassland species...
January 19, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29348177/dasatinib-increases-endothelial-permeability-leading-to-pleural-effusion
#4
Carole Phan, Etienne-Marie Jutant, Ly Tu, Raphaël Thuillet, Andrei Seferian, David Montani, Alice Huertas, Jan van Bezu, Fabian Breijer, Anton Vonk Noordegraaf, Marc Humbert, Jurjan Aman, Christophe Guignabert
Pleural effusion is a frequent side-effect of dasatinib, a second-generation tyrosine kinase inhibitor used in the treatment of chronic myelogenous leukaemia. However, the underlying mechanisms remain unknown. We hypothesised that dasatinib alters endothelial integrity, resulting in increased pulmonary vascular endothelial permeability and pleural effusion.To test this, we established the first animal model of dasatinib-related pleural effusion, by treating rats with a daily regimen of high doses of dasatinib (10 mg·kg-1·day-1 for 8 weeks)...
January 2018: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29346014/role-of-the-lymphatic-system-in-the-pathogenesis-of-hypertension-in-humans
#5
Angelika Chachaj, Bartosz Puła, Mariusz Chabowski, Jędrzej Grzegrzółka, Ewa Szahidewicz-Krupska, Maciej Karczewski, Dariusz Janczak, Piotr Dzięgiel, Marzenna Podhorska-Okołów, Grzegorz Mazur, Andrzej Gamian, Andrzej Szuba
BACKGROUND: Recent studies, mainly on animal models, have suggested that negatively charged glycosaminoglycans, macrophages, and lymph vessels in the skin interstitium may serve as extrarenal control of sodium balance and blood pressure. The aim of the study was to prove the hypothesis that skin interstitium has a role in the pathogenesis of hypertension in humans. METHODS AND RESULTS: We have examined skin biopsies in 91 patients from the department of surgery who had elective surgery with abdominal skin incision: 43 were hypertensive, 14 had resistant hypertension, and 34 with normal blood pressure as control group (median patients' age in these groups estimated accordingly 64 vs...
January 18, 2018: Lymphatic Research and Biology
https://www.readbyqxmd.com/read/29345195/mitochondrial-dysfunction-and-pulmonary-hypertension-cause-effect-or-both
#6
Jeffrey D Marshall, Isabel Bazan, Yi Zhang, Wassim H Fares, Patty J Lee
Pulmonary hypertension describes a heterogeneous disease defined by increased pulmonary artery pressures, and progressive increase in pulmonary vascular resistance due to pathologic remodeling of the pulmonary vasculature involving pulmonary endothelial cells, pericytes, and smooth muscle cells.  This process occurs under various conditions, and though these populations vary, the clinical manifestations are the same: progressive dyspnea, increases in right ventricular (RV) afterload and dysfunction, RV-pulmonary artery uncoupling, and right-sided heart failure with systemic circulatory collapse...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29344235/metronomic-chemotherapy-remodel-cancer-associated-fibroblasts-to-decrease-chemoresistance-of-gastric-cancer-in-nude-mice
#7
Chao Wang, Wenqi Xi, Jinling Jiang, Jun Ji, Yingyan Yu, Zhenggang Zhu, Jun Zhang
The present study aimed to evaluate whether capecitabine or 5-fluorouracil (5-Fu) chemotherapy with the metronomic pattern may cause significant chemoresistance compared with the traditional pattern, and whether CAFs are involved in drug resistance. SGC-7901 cells were subcutaneously injected into the nude mice, and the mice were divided into five groups: The control group, intraperitoneally injected with normal saline; the 5-Fu conventional dose group [5-Fu maximum tolerated dose (MTD) group], intraperitoneally injected with 50 mg/kg, twice per week for 2 weeks, with an 1-week discontinuation for 6 weeks; the capecitabine conventional dose group (capecitabine MTD group), intragastric 500 mg/kg, twice per week for 2 weeks, with a 1-week discontinuation for 6 weeks; the 5-Fu metronomic group [5-Fu low-dose metronomic (LDM) group], intraperitoneally injected with 15 mg/kg, twice a week for 6 weeks; and the capecitabine metronomic group (capecitabine LDM group), intragastric administration at 200 mg/kg, twice a week for 6 weeks...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29344202/metformin-in-combination-with-cisplatin-inhibits-cell-viability-and-induces-apoptosis-of-human-ovarian-cancer-cells-by-inactivating-erk-1-2
#8
Jian-Hong Dang, Zhi-Jun Jin, Xiao-Jun Liu, Dian Hu, Jing Wang, Yan Luo, Ling-Ling Li
Metformin protects against insulin resistance by restoring insulin sensitivity and may also possess anticancer activity. The aim of the present study was to investigate the effects of metformin alone or combined with cisplatin (DDP) on the cell viability and apoptosis of HO-8910 human ovarian cancer cells, and to investigate metformin as a potential novel therapeutic for treating ovarian cancer. The viability of HO-8910 cells was assessed using a cell proliferation and cytotoxicity assay following treatment with different concentrations of metformin (0...
December 2017: Oncology Letters
https://www.readbyqxmd.com/read/29343893/assessment-of-perfusion-of-free-flaps-used-in-head-and-neck-reconstruction-using-pulsatility-index
#9
Akshay Kapoor, Malay Karmakar, Collin Roy, Kaushal Priya Anand
Objective: To detect venous or arterial obstruction in the pedicle of a free flap we can monitor resistance in the flap bed which is reflected in Pulsatility Index (PI) Therefore if we detect change in the values of the PI in these flaps then we can detect complications in flap due to vascular insufficiency early. Materials and Methods: Seven patients of Free Fibular Flap Reconstruction and ten patients of Free Radial Forearm Flap reconstruction were evaluated over a period of 18 months...
May 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/29343892/first-two-bilateral-hand-transplantations-in-india-part-4-immediate-post-operative-care-immunosuppression-protocol-and-monitoring
#10
Subramania Iyer, Mohit Sharma, P Kishore, Jimmy Mathew, R Janarthanan, Raghuveer Reddy, Abhijeet Wakure, Sundeep Vijayaraghavan, S M Chetan Mali, Visakh Varma, Ashish Chaudhari, Swapnil Dhake, Akshay Omkumar, George Kurian, Rajesh Nair, Anil Mathew, Zachariah Paul, Malini Eapen, Lalitha Biswas
Introduction: Being able to counter immune-mediated rejection has for decades been the single largest obstacle for the progress of vascular composite allotransplantation (VCA). The human immune system performs the key role of differentiating the 'self ' from the 'non-self '. This, although is quintessential to eliminate or resist infections, also resists the acceptance of an allograft which it promptly recognises as 'non-self'. Materials and Methods: Pre-operative evaluation of the recipient evaluation included immunological assessment in the form of panel reactive antibodies (PRA), human leucocyte antigen (HLA) typing, donor-specific antibody detection assays (DSA) and complement-dependent cytotoxicity assays (CDC)...
May 2017: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
https://www.readbyqxmd.com/read/29343759/incorporation-of-iloprost-in-phospholipase-resistant-phospholipid-scaffold-enhances-its-barrier-protective-effects-on-pulmonary-endothelium
#11
Olga Oskolkova, Nicolene Sarich, Yufeng Tian, Grzegorz Gawlak, Fanyong Meng, Valery N Bochkov, Evgeny Berdyshev, Anna A Birukova, Konstantin G Birukov
Correction of barrier dysfunction and inflammation in acute lung injury (ALI) represents an important problem. Previous studies demonstrate barrier-protective and anti-inflammatory effects of bioactive lipid prostacyclin and its stable analog iloprost (ILO). We generated a phospholipase resistant synthetic phospholipid with iloprost attached at the sn-2 position (ILO-PC) and investigated its biological effects. In comparison to free ILO, ILO-PC caused sustained endothelial cell (EC) barrier enhancement, linked to more prolonged activation of Rap1 and Rac1 GTPases and their cytoskeletal and cell junction effectors: cortactin, PAK1, p120-catenin and VE-cadherin...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343745/malaria-infected-red-blood-cells-release-small-regulatory-rnas-through-extracellular-vesicles
#12
Kehinde Adebayo Babatunde, Smart Mbagwu, María Andrea Hernández-Castañeda, Swamy R Adapa, Michael Walch, Luis Filgueira, Laurent Falquet, Rays H Y Jiang, Ionita Ghiran, Pierre-Yves Mantel
The parasite Plasmodium falciparum causes the most severe form of malaria. Cell communication between parasites is an important mechanism to control population density and differentiation. The infected red blood cells (iRBCs) release small extracellular vesicles (EVs) that transfer cargoes between cells. The EVs synchronize the differentiation of the asexual parasites into gametocytes to initiate the transmission to the mosquito. Beside their role in parasite communication, EVs regulate vascular function. So far, the exact cargoes responsible for cellular communication remain unknown...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343183/the-acute-angiogenic-signalling-response-to-low-load-resistance-exercise-with-blood-flow-restriction
#13
Richard A Ferguson, Julie E A Hunt, Mark P Lewis, Neil R W Martin, Darren J Player, Carolin Stangier, Conor W Taylor, Mark C Turner
This study investigated protein kinase activation and gene expression of angiogenic factors in response to low-load resistance exercise with or without blood flow restriction (BFR). In a repeated measures cross-over design, six males performed four sets of bilateral knee extension exercise at 20% 1RM (reps per set = 30:15:15:continued to fatigue) with BFR (110 mmHg) and without (CON). Muscle biopsies were obtained from the vastus lateralis before, 2 and 4 h post-exercise. mRNA expression was determined using real-time RT-PCR...
January 17, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29343014/-correlation-between-peripheral-venous-oxygen-saturation-and-hemodynamic-parameters-in-patients-with-pulmonary-hypertension
#14
C Hong, J Y Li, R K Chen, C L Liu, X N Wang, S M Qing, X F Su, N F Zhang
Objective: To investigate the correlation of peripheral venous oxygen saturation (SpvO(2)) with mixed venous oxygen saturation (SvO(2)), pulmonary vascular resistance (PVR) and cardiac index (CI) in patients with pulmonary hypertension (PH), in order to predict these parameters using SpvO(2) and assess the prognosis of patients. Methods: Hospitalized patients diagnosed with PH by right heart catheterization in the Guangzhou Institute of Respiratory Diseases from July 2015 to October 2016 were retrospectively analyzed...
January 12, 2018: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/29342993/-analysis-of-prognosis-and-associated-risk-factors-in-pediatric-idiopathic-pulmonary-arterial-hypertension
#15
Q Liu, C Zhang, Q Q Li, Y Zhu, D Zhang, W G Zhao, H Gu
Objective: To analyze the prognosis and associated risk factors of pediatric idiopathic pulmonary arterial hypertension. Methods: A total of 119 patients under 18 years of age diagnosed as idiopathic pulmonary arterial hypertension in the Pulmonary Arterial Hypertension Center in Beijing Anzhen Hospital between June 2007 and May 2017 were enrolled in this retrospective study. The clinical informations and follow-up data were collected. The endpoints of follow-up were defined as death or undergoing lung transplantation...
January 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29339138/hyperglycaemia-disrupts-conducted-vasodilation-in-the-resistance-vasculature-of-db-db-mice
#16
Hamish A L Lemmey, Xi Ye, Hong Ding, Chris R Triggle, Christopher J Garland, Kim A Dora
Vascular dysfunction in small resistance arteries is observed during chronic elevations in blood glucose. Hyperglycaemia-associated effects on endothelium-dependent vasodilation have been well characterized, but effects on conducted vasodilation in the resistance vasculature are not known. Small mesenteric arteries were isolated from healthy and diabetic db/db mice, which were used as a model of chronic hyperglycaemia. Endothelium-dependent vasodilation via the Gq/11-coupled proteinase activated receptor 2 (PAR2) was stimulated with the selective agonist SLIGRL...
January 12, 2018: Vascular Pharmacology
https://www.readbyqxmd.com/read/29338918/filling-pressures-in-fontan-revisited-comparison-between-pulmonary-artery-wedge-ventricular-end-diastolic-and-left-atrial-pressures-in-adults
#17
William R Miranda, Alexander C Egbe, Donald J Hagler, Nathaniel W Taggart, Rick A Nishimura, Heidi M Connolly, Carole A Warnes
BACKGROUND: Pulmonary artery wedge pressure (PAWP) has been shown to correlate better with left atrial pressure (LAP) than ventricular end-diastolic pressure (VEDP) in acquired heart disease. The correlation between VEDP and PAWP and their performance as surrogates for LAP in Fontan patients is unknown. METHODS: Offline single-beat simultaneous measurement of PAWP and VEDP was performed in 50 adult Fontan patients and non-simultaneous hemodynamic data abstracted for calculation of pulmonary vascular resistance (PVR)...
December 28, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29337566/cationic-polymeric-nanoparticle-delivering-ccr2-sirna-to-inflammatory-monocytes-for-tumor-microenvironment-modification-and-cancer-therapy
#18
Song Shen, Yue Zhang, Kai-Ge Chen, Ying-Li Luo, Jun Wang
Accumulating evidence has confirmed that malignant tumors have a complex microenvironment, which consists of a heterogeneous collection of tumor cells and other cell subsets (including the full gamut of immune cells). Tumor-associated macrophages (TAMs), derived from circulating Ly6Chi monocytes, constitute the most substantial fraction of tumor-infiltrating immune cells in nearly all cancer types and contribute to tumor progression, vascularization, metastasis, immunosuppression and therapeutic resistance...
January 16, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29337108/a-vascular-disrupting-agent-overcomes-tumor-multidrug-resistance-by-skewing-macrophage-polarity-toward-the-m1-phenotype
#19
Xueping Lei, Minfeng Chen, Xiaobo Li, Maohua Huang, Qiulin Nie, Nan Ma, Heru Chen, Nanhui Xu, Wencai Ye, Dongmei Zhang
Multidrug resistance (MDR) mediated by ATP-binding cassette (ABC) transporters is the major obstacle for chemotherapeutic success. Although attempts have been made to circumvent ABC transporter-mediated MDR in past decades, there is still no effective agent in clinic. Here, we identified a vascular disrupting agent, Z-GP-DAVLBH, that significantly inhibited the growth of multidrug-resistant human hepatoma HepG2/ADM and human breast cancer MCF-7/ADR tumor xenografts, although these cells were insensitive to Z-GP-DAVLBH in vitro...
January 11, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29335612/wrist-circumference-is-associated-with-increased-systolic-blood-pressure-in-children-with-overweight-obesity
#20
Simona Zampetti, Giuseppe Campagna, Federica Lucantoni, Lidia Marandola, Luca D'Onofrio, Claudio Chiesa, Lucia Pacifico, Andrea Vania, Raffaella Buzzetti, Gaetano Leto
Wrist circumference is a clinical marker for insulin-resistance in overweight/obese children and adolescents. Insulin resistance is considered a major determinant of increased vascular resistance and hypertension. The aim of the study was to investigate the association between wrist circumference and systolic (S) and diastolic (D) blood pressure (BP) in a population of overweight/obese children and adolescents. A population of 1133 overweight/obese children and adolescents (n = 1133) were consecutively enrolled...
January 15, 2018: Hypertension Research: Official Journal of the Japanese Society of Hypertension
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