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https://www.readbyqxmd.com/read/29055151/prevention-and-management-of-spouting-bleeding-during-endoscopic-submucosal-dissection-for-large-subpedunculated-type-colonic-tumor
#1
Yuzuru Tamaru, Shiro Oka, Shinji Tanaka
Endoscopic submucosal dissection (ESD) is a reliable method for treating superficial colorectal tumors, however it is technically more difficult and requires more experience than gastric ESD, because of difficulties associated with endoscope operability and the anatomical features of the colorectal region, including the presence of folds/flexures, bending of the intestinal tract, and the thinness of the intestinal wall.(1) Main accidental complications during colorectal ESD are perforation and bleeding.(2, 3) With continued bleeding, the visibility of the operative field would deteriorate...
October 21, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/29054134/thymus-derived-mesenchymal-stem-cells-for-tissue-engineering-clinical-grade-cardiovascular-grafts
#2
Dominga Iacobazzi, Megan Swim, Ambra Albertario, Massimo Caputo, Mohamed T Ghorbel
Mesenchymal stem cells (MSCs) are attractive tools for regenerative medicine because of their multi-differentiation potential and immunomodulation capacity. In congenital heart defect surgical correction, replacement grafts lacking growth potential are commonly used. Tissue engineering promises to overcome the limitations of these grafts. In this study, we hypothesized that human thymus derived MSCs are a suitable tool to tissue engineer a living vascular graft with good integration and patency once implanted in vivo...
October 20, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29053988/intermedin-reduces-neointima-formation-by-regulating-vascular-smooth-muscle-cell-phenotype-via-camp-pka-pathway
#3
Qing Zhu, Xian-Qiang Ni, Wei-Wei Lu, Jin-Sheng Zhang, Jin-Ling Ren, Di Wu, Yao Chen, Lin-Shuang Zhang, Yan-Rong Yu, Chao-Shu Tang, Yong-Fen Qi
BACKGROUND AND AIMS: Vascular smooth muscle cell (VSMC) dedifferentiation contributes to neointima formation, which results in various vascular disorders. Intermedin (IMD), a cardiovascular paracrine/autocrine polypeptide, is involved in maintaining circulatory homeostasis. However, whether IMD protects against neointima formation remains largely unknown. The purpose of this study is to investigate the role of IMD in neointima formation and the possible mechanism. METHODS: IMD1-53 (100ng/kg/h) or saline water was used on rat carotid-artery balloon-injury model...
October 9, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/29053152/heart-in-space-effect-of-the-extraterrestrial-environment-on-the-cardiovascular-system
#4
REVIEW
Richard L Hughson, Alexander Helm, Marco Durante
National space agencies and private corporations aim at an extended presence of humans in space in the medium to long term. Together with currently suboptimal technology, microgravity and cosmic rays raise health concerns about deep-space exploration missions. Both of these physical factors affect the cardiovascular system, whose gravity-dependence is pronounced. Heart and vascular function are, therefore, susceptible to substantial changes in weightlessness. The altered cardiovascular function in space causes physiological problems in the postflight period...
October 20, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/29051338/the-occurrence-of-cardiac-output-decrease-via-stroke-volume-is-more-pronounced-in-women-than-in-men-during-prolonged-dry-static-apnoea
#5
Sara Magnani, Gabriele Mulliri, Gianmarco Sainas, Giovanna Ghiani, Virginia Pinna, Irene Sanna, Antonio Crisafulli, Filippo Tocco
Little is known on gender differences in autonomic cardiovascular regulation of diving response (DR) and the few available studies into these differences were conducted on subjects with limited or no diving experience. We examined gender influence on hemodynamics during dry-static apnoea (SA) in 8 male and 8 female elite divers matched for their breath-hold (BH) ability. Hemodynamics was assessed by means of simultaneous echocardiography and impedance cardiography measurements and arterial pressure and oxygen saturation (SaO2) were also collected...
October 19, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29051141/coronary-artery-ectasia-predicts-future-cardiac-events-in-patients-with-acute-myocardial-infarction
#6
Takahito Doi, Yu Kataoka, Teruo Noguchi, Tatsuhiro Shibata, Takahiro Nakashima, Shoji Kawakami, Kazuhiro Nakao, Masashi Fujino, Toshiyuki Nagai, Tomoaki Kanaya, Yoshio Tahara, Yasuhide Asaumi, Etsuko Tsuda, Michikazu Nakai, Kunihiro Nishimura, Toshihisa Anzai, Kengo Kusano, Hiroaki Shimokawa, Yoichi Goto, Satoshi Yasuda
OBJECTIVE: Coronary artery ectasia (CAE) is an infrequently observed vascular phenotype characterized by abnormal vessel dilatation and disturbed coronary flow, which potentially promote thrombogenicity and inflammatory reactions. However, whether or not CAE influences cardiovascular outcomes remains unknown. APPROACH AND RESULTS: We investigated major adverse cardiac events (MACE; defined as cardiac death and nonfatal myocardial infarction [MI]) in 1698 patients with acute MI...
October 19, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29051088/update-on-the-role-of-pentraxin-3-in-atherosclerosis-and-cardiovascular-diseases
#7
REVIEW
Matteo Casula, Fabrizio Montecucco, Aldo Bonaventura, Luca Liberale, Alessandra Vecchié, Franco Dallegri, Federico Carbone
Pentraxin 3 (PTX3) is an acute-phase protein that was recently demonstrated to play pleiotropic activities in cardiovascular (CV) diseases. Tumor necrosis factor and interleukins up-regulates PTX3 transcription in different cell types (i.e. endothelial cells, phagocytes, smooth muscle cells, fibroblasts and glial cells) involved in atherogenesis. By interacting with numerous ligands, PTX3 acts as a modulatory molecule of complement system, inflammatory response, angiogenesis, and vascular/tissue remodeling...
October 16, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/29050900/bone-and-mineral-disorders-in-chronic-kidney-disease-implications-for-cardiovascular-health-and-ageing-in-the-general-population
#8
REVIEW
Adrian Covic, Marc Vervloet, Ziad A Massy, Pablo Ureña Torres, David Goldsmith, Vincent Brandenburg, Sandro Mazzaferro, Pieter Evenepoel, Jordi Bover, Mugurel Apetrii, Mario Cozzolino
The patient with chronic kidney disease (CKD) represents an extreme model for arteriosclerosis, vascular calcification, and bone disorders, all of which are also associated with ageing in the general population. These pathological features are also relevant to other common chronic health disorders such as diabetes, and chronic inflammatory and cardiovascular diseases. Although management and interventions for these major risk factors are now incorporated into most public health guidelines (eg, smoking cessation and control of bodyweight and blood pressure, as well as glucose and cholesterol concentrations), some residual cardiovascular risk is not reduced by implementation of these interventions...
October 16, 2017: Lancet Diabetes & Endocrinology
https://www.readbyqxmd.com/read/29050786/homocysteine-in-non-valvular-atrial-fibrillation-role-and-clinical-implications
#9
REVIEW
Yan Yao, Mei-Sheng Shang, Jian-Zeng Dong, Chang-Sheng Ma
Atrial fibrillation (AF), the most common sustained arrhythmia, is associated with a series of adverse complications that cause so-called AF socioeconomic burden. Apart from the classical risk factors, it seems to be novel factors that increase the risk of AF and AF-related stroke. Recently, more and more evidence has well documented the close relationships between homocysteine (Hcy) and AF. As a well-known marker for pro-oxidation and pro-inflammation, Hcy plays an important role in a number of vascular diseases having strong association with AF...
October 16, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29050738/-timma-ultrasonographic-scale-of-carotid-atherosclerosis-by-vascular-neurologists
#10
K Yayehd, N Morel, W Vadot, G Rodier, C Maugras, J Jund, L Belle, T Berremili
BACKGROUND: Carotid atherosclerosis is a powerful predictive factor of vascular risk at the individual patient level. Ultrasonography is a reference technique for the evaluation of this condition. However, its use in common practice remains difficult due to a lack of standardization and inter-operator variability. We present a new and simple technique for the assessment of carotid atherosclerosis; and evaluate the ability of vascular neurologists to obtain results consistent with those of an expert in vascular ultrasound...
October 16, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/29050621/association-of-chronic-kidney-disease-with-in-hospital-outcomes-of-transcatheter-aortic%C3%A2-valve-replacement
#11
Tanush Gupta, Kashish Goel, Dhaval Kolte, Sahil Khera, Pedro A Villablanca, Wilbert S Aronow, Anna E Bortnick, David P Slovut, Cynthia C Taub, Jorge R Kizer, Robert T Pyo, J Dawn Abbott, Gregg C Fonarow, Charanjit S Rihal, Mario J Garcia, Deepak L Bhatt
OBJECTIVES: This study sought to determine the association of chronic kidney disease (CKD) with in-hospital outcomes of transcatheter aortic valve replacement (TAVR). BACKGROUND: CKD is a known independent risk factor for worse outcomes after surgical aortic valve replacement (SAVR). However, data on outcomes of patients with CKD undergoing TAVR are limited, especially in those on chronic dialysis. METHODS: The authors used data from the 2012 to 2014 National Inpatient Sample database to identify all patients ≥18 years of age who underwent TAVR...
October 23, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29050490/mir-26a-regulates-vascular-smooth-muscle-cell-calcification-in-vitro-through-targeting-ctgf
#12
W Wu, Y Q Shang, S L Dai, F Yi, X C Wang
Vascular calcification is one of the most important factors for high morbidity and mortality from cardiovascular and cerebrovascular diseases. The aim of this study is to investigate the effect and mechanism of miR-26a on vascular smooth muscle cell calcification. First, the VSMCs were induced by β-glycerol phosphate (β-GP) for 7d and 14d, and Alizarin Red S staining was performed to examine the mineralized nodule change; then real time RT-PCR and western blotting were performed to explore the expression of miR-26a, CTGF, OPG, RANKL and ALP in un-induced and β-GP-induced VSMCs; next, the VSMCs were transfected with miR-26a mimics, and Alizarin Red S staining was performed to examine the mineralized nodule change; finally, real time RT-PCR and western blotting were performed to explore the expression of miR-26a, CTGF, OPG, RANKL and ALP in un-transfected and miR-26a mimics transfected VSMCs...
2017: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29049912/globular-chitosan-treatment-of-bovine-jugular-veins-evidence-of-anticalcification-efficacy-in-the-subcutaneous-rat-model
#13
Anna A Krasilnikova, David S Sergeevichev, Vladislav V Fomenko, Alexander A Korobeynikov, Maria B Vasilyeva, Alexander S Yunoshev, Alexander M Karaskov, Evgeny A Pokushalov
Vascular xenografts are widely used in cardiovascular surgery as an alternative to autologous vessels and vascular allografts. Calcification is one of the main drawbacks of vascular grafts, especially among young patients and children. Among different anticalcification approaches, chitosan emerges as a highly promising candidate due to its versatility, natural origin, and biocompatibility. We investigated the anticalcification efficacy of globular chitosan ("Chitozol") as it demonstrated the improved rate of water solubility as compared with conventional linear macromolecules of chitosan...
September 14, 2017: Cardiovascular Pathology: the Official Journal of the Society for Cardiovascular Pathology
https://www.readbyqxmd.com/read/29049308/the-relationship-between-intradialytic-hypotension-and-vascular-calcification-in-hemodialysis-patients
#14
AJin Cho, Young-Ki Lee, Jieun Oh, Jong-Woo Yoon, Dong Ho Shin, Hee Jung Jeon, Myung-Jin Choi, Jung-Woo Noh
BACKGROUND: Vascular calcification is associated with structural and functional abnormality of the heart and blood vessels. We investigated the relationship between intradialytic hypotension (IDH) and vascular calcification in hemodialysis (HD) patients, and their impacts on cardiovascular events (CVEs). METHOD: We enrolled 191 maintenance HD patients who underwent plain abdomen radiography for abdominal aortic calcification score (AACS). A nadir systolic blood pressure (BP) < 90 mm Hg or the requirement of bolus fluid administration was required to quantify the hypotension diagnosis...
2017: PloS One
https://www.readbyqxmd.com/read/29049022/cardiovascular-adaptation-to-hypoxia-and-the-role-of-peripheral-resistance
#15
Andrew S Cowburn, David Macias, Charlotte Summers, Edwin R Chilvers, Randall S Johnson
Systemic vascular pressure in vertebrates is regulated by a range of factors: one key element of control is peripheral resistance in tissue capillary beds. Many aspects of the relationship between central control of vascular flow and peripheral resistance are unclear. An important example of this is the relationship between hypoxic response in individual tissues, and the effect that response has on systemic cardiovascular adaptation to oxygen deprivation. We show here how hypoxic response via the HIF transcription factors in one large vascular bed, that underlying the skin, influences cardiovascular response to hypoxia in mice...
October 19, 2017: ELife
https://www.readbyqxmd.com/read/29048932/cardio-ankle-vascular-index-value-in-dyslipidemia-patients-affected-by-cardiovascular-risk-factors
#16
XiaoXiao Zhao, Liujin Bo, Hongwei Zhao, Lihong Li, Yingyan Zhou, Hongyu Wang
BACKGROUND: Increased arterial stiffness is an independent cardiovascular risk factor in smokers or patients with diabetes mellitus and hypertension. Cardio-ankle vascular index (CAVI) is an index of arterial stiffness and atherosclerosis. One of the most important risk factors of the causes of atherosclerosis is dyslipidemia(DLP). However, there was a little research about which influence factors such as: hypertension, diabetes mellitus, and smoking could contribute to the atherosclerosis in the subjects withDLP...
October 19, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29048462/obesity-induced-vascular-dysfunction-and-arterial-stiffening-requires-endothelial-cell-arginase-1
#17
Anil Bhatta, Lin Yao, Zhimin Xu, Haroldo A Toque, Jijun Chen, Reem T Atawia, Abdelrahman Y Fouda, Zsolt Bagi, Rudolf Lucas, Ruth B Caldwell, Robert W Caldwell
Aims: Elevation of arginase activity has been linked to vascular dysfunction in diabetes and hypertension by a mechanism involving decreased nitric oxide (NO) bioavailability due to L-arginine depletion. Excessive arginase activity also can drive L-arginine metabolism towards the production of ornithine, polyamines, and proline, promoting proliferation of vascular smooth muscle cells and collagen formation, leading to perivascular fibrosis. We hypothesized that there is a specific involvement of arginase 1 expression within the vascular endothelial cells in this pathology...
September 7, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/29047342/effectiveness-and-patient-safety-of-platelet-aggregation-inhibitors-in-the-prevention-of-cardiovascular-disease-and-ischemic-stroke-in-older-adults-a-systematic-review
#18
REVIEW
Maren Meinshausen, Anja Rieckert, Anna Renom-Guiteras, Moritz Kröger, Christina Sommerauer, Ilkka Kunnamo, Yolanda V Martinez, Aneez Esmail, Andreas Sönnichsen
BACKGROUND: Platelet aggregation inhibitors (PAI) are among the most frequently prescribed drugs in older people, though evidence about risks and benefits of their use in older adults is scarce. The objectives of this systematic review are firstly to identify the risks and benefits of their use in the prevention and treatment of vascular events in older adults, and secondly to develop recommendations on discontinuing PAI in this population if risks outweigh benefits. METHODS: Staged systematic review consisting of three searches...
October 16, 2017: BMC Geriatrics
https://www.readbyqxmd.com/read/29047077/adventitial-fibroblast-nox4-expression-and-ros-signaling-in-pulmonary-arterial-hypertension
#19
Scott A Barman, David Fulton
Pulmonary arterial hypertension (PAH) is a progressive disease arising from remodeling and narrowing of pulmonary arteries (PA) resulting in high pulmonary arterial blood pressure and ultimately right ventricular failure. Elevated production of reactive oxygen species (ROS) by NADPH oxidase 4 (Nox4), a constitutively active enzyme, has been associated with oxygen sensing, vasomotor control, cellular proliferation, differentiation, migration, apoptosis, senescence, fibrosis, and angiogenesis. Further, elevated expression of Nox4 has been reported in a number of cardiovascular diseases, including atherosclerosis, hypertension, cardiac failure, ischemic stroke, and PAH...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29046318/central-serotonin-and-the-control-of-arterial-blood-pressure-and-heart-rate-in-infant-rats-influence-of-sleep-state-and-sex
#20
Jennifer L Magnusson, Kevin James Cummings
Sudden Infant Death Syndrome (SIDS) is associated with serotonin (5-HT) neuron abnormalities. There is evidence of autonomic dysfunction during sleep in infants eventually succumbing to SIDS, as well as cardiovascular collapse prior to death. Neonatal rodents deficient in central 5-HT display hypotension and bradycardia. We hypothesized that central 5-HT reduces cardiac vagal tone and increases sympathetic vascular tone and, given the firing pattern of 5-HT neurons, that these effects are greater in quiet sleep (QS) than in active sleep (AS)...
October 18, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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