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https://www.readbyqxmd.com/read/29338940/chimney-stent-technique-in-a-valve-in-valve-procedure
#1
Francisco Hidalgo, Soledad Ojeda, Miguel Romero
No abstract text is available yet for this article.
January 12, 2018: Revista Española de Cardiología
https://www.readbyqxmd.com/read/29335466/deeply-sourced-formate-fuels-sulfate-reducers-but-not-methanogens-at-lost-city-hydrothermal-field
#2
Susan Q Lang, Gretchen L Früh-Green, Stefano M Bernasconi, William J Brazelton, Matthew O Schrenk, Julia M McGonigle
Hydrogen produced during water-rock serpentinization reactions can drive the synthesis of organic compounds both biotically and abiotically. We investigated abiotic carbon production and microbial metabolic pathways at the high energy but low diversity serpentinite-hosted Lost City hydrothermal field. Compound-specific 14C data demonstrates that formate is mantle-derived and abiotic in some locations and has an additional, seawater-derived component in others. Lipids produced by the dominant member of the archaeal community, the Lost City Methanosarcinales, largely lack 14C, but metagenomic evidence suggests they cannot use formate for methanogenesis...
January 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29332924/multiple-recurrent-pseudoaneurysms-after-endovascular-repair-of-abdominal-aortic-aneurysm-in-a-patient-with-beh%C3%A3-et-s-disease
#3
Yohei Yamamoto, Yoshinori Inoue, Tsuyoshi Ichinose, Masato Nishizawa, Kimihiro Igari, Takahiro Toyofuku, Toshifumi Kudo
In Behçet's disease (BD) patients, endovascular repair is a reasonable alternative treatment for aortic aneurysms to avoid postoperative anastomotic pseudoaneurysms. However, there are some complications that may occur after endovascular repair. We herein report the case of a 40-year-old man with active BD developed recurrent aortic pseudoaneurysms at the proximal and distal margins of the stent graft and a femoral puncture site pseudoaneurysm 3 months after endovascular abdominal aortic aneurysm (AAA) repair...
January 15, 2018: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29327566/upper-extremity-access-options-for-complex-endovascular-aortic-interventions
#4
Kedar S Lavingia, Anahita Dua, Jordan R Stern
The advancement of endovascular therapy has led to minimally invasive solutions to increasingly complex aortic pathology, including thoracoabdominal aneurysms and those involving the visceral segment. Upper extremity access is beneficial in a variety of these complex interventions, and may be absolutely required for certain procedures such as placement of parallel chimney grafts. Traditionally, the brachial artery has been the primary access site on the arm, using either a percutaneous or open approach. Brachial access is safe and effective, and remains suitable for the majority of clinical situations...
January 9, 2018: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29316392/the-overlooked-occurrence-of-environmentally-persistent-free-radicals-in-an-area-with-low-rank-coal-burning-xuanwei-china
#5
Peng Wang, Bo Pan, Hao Li, Yu Huang, Xudong Dong, Fang Ai, Lingyan Liu, Min Wu, Baoshan Xing
The mining and burning of low-rank coal in Xuanwei, China have attracted a great deal of research attention because of the generated polyaromatic hydrocarbons (PAHs) and the high incidence of lung cancer in this region. Given the abundant transition metals in the allitic soil, we hypothesized that environmentally persistent free radicals (EPFRs) are formed in this region and the potential risk had not been addressed. Strong electron paramagnetic resonance (EPR) signals of 3.20 × 1017 - 3.10 × 1019 spins/g were detected in environmental samples, including chimney soot, coal, soil and total suspended particles (TSP)...
January 9, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29308272/deepest-and-hottest-hydrothermal-activity-in-the-okinawa-trough-the-yokosuka-site-at-yaeyama-knoll
#6
Junichi Miyazaki, Shinsuke Kawagucci, Akiko Makabe, Ayu Takahashi, Kazuya Kitada, Junji Torimoto, Yohei Matsui, Eiji Tasumi, Takazo Shibuya, Kentaro Nakamura, Shunsuke Horai, Shun Sato, Jun-Ichiro Ishibashi, Hayato Kanzaki, Satoshi Nakagawa, Miho Hirai, Yoshihiro Takaki, Kyoko Okino, Hiromi Kayama Watanabe, Hidenori Kumagai, Chong Chen
Since the initial discovery of hydrothermal vents in 1977, these 'extreme' chemosynthetic systems have been a focus of interdisciplinary research. The Okinawa Trough (OT), located in the semi-enclosed East China Sea between the Eurasian continent and the Ryukyu arc, hosts more than 20 known vent sites but all within a relatively narrow depth range (600-1880 m). Depth is a significant factor in determining fluid temperature and chemistry, as well as biological composition. However, due to the narrow depth range of known sites, the actual influence of depth here has been poorly resolved...
December 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29300784/exceptional-discovery-of-a-shallow-water-hydrothermal-site-in-the-sw-area-of-basiluzzo-islet-aeolian-archipelago-south-tyrrhenian-sea-an-environment-to-preserve
#7
Valentina Esposito, Franco Andaloro, Simonepietro Canese, Giovanni Bortoluzzi, Marzia Bo, Marcella Di Bella, Francesco Italiano, Giuseppe Sabatino, Pietro Battaglia, Pierpaolo Consoli, Patrizia Giordano, Federico Spagnoli, Violetta La Cono, Michail M Yakimov, Gianfranco Scotti, Teresa Romeo
The geological, biological and geochemical features of a particular field of hydrothermal vents, discovered in the Panarea Volcanic Complex during a research survey carried out in 2015, are described for the first time. The site, located at 70-80 m depth off the South-western coast of the islet of Basiluzzo, was named Smoking Land for the presence of a large number of wide and high active chimneys and was characterized in terms of dissolved benthic fluxes, associated macrofauna and megafauna communities and preliminary mineralogy and geochemistry of chimney structures...
2018: PloS One
https://www.readbyqxmd.com/read/29260264/a-new-piperazine-derivative-1-4-3-5-di-tert-butyl-4-hydroxybenzyl-piperazin-1-yl-2-methoxyethan-1-one-with-antioxidant-and-central-activity
#8
Adriane F Brito, Patrícia C C S Braga, Lorrane K S Moreira, Dayane M Silva, Daiany P B Silva, Germán Sanz, Boniek G Vaz, Flávio S de Carvalho, Luciano M Lião, Rafaela R Silva, François Noël, Hiasmin F S Neri, Paulo C Ghedini, Murilo F de Carvalho, Eric de S Gil, Elson A Costa, Ricardo Menegatti
In the scope of a research program aimed at developing new drugs for the treatment of central nervous system diseases, we describe herein the synthesis and pharmacological evaluation of 1-(4-(3,5-di-tert-butyl-4-hydroxybenzyl) piperazin-1-yl)-2-methoxyethan-1-one (LQFM180). This compound showed antioxidant activity in two models, electroanalytical assays, and DPPH activity. Moreover, in behavioral tests as the open field test LQFM180 (9.4, 18.8, and 37.6 mg/kg, per oral (p.o.)), we detected anxiolytic-like activity...
December 19, 2017: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29249769/open-conversion-for-type-a-ascending-aortic-dissection-after-thoracic-endovascular-aortic-repair-by-the-chimney-graft-technique
#9
Hirofumi Kasahara, Yoshito Inoue, Takashi Hachiya
An 83-year-old man with aortic arch aneurysm underwent zone 0 thoracic endovascular aortic repair (TEVAR) by the chimney graft technique with two supra-aortic arch debranching grafts and developed subacute type A ascending aortic dissection. We performed emergency open conversion with circulatory arrest under deep hypothermia. The tip of the chimney graft (around the sino-tubular junction in the ascending aorta) was stiff, making it difficult to inspect the lumen and perform anastomosis. Deep hypothermic circulatory arrest and cutting the endograft stents to mobilize the graft were necessary for secure anastomosis...
December 18, 2017: Annals of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29246434/endovascular-repair-of-acute-thoraco-abdominal-aortic-aneurysms
#10
Chiara Mascoli, Massimo Vezzosi, Andreas Koutsoumpelis, Mauro Iafrancesco, Aaron Ranasinghe, Paul Clift, Jorge Mascaro, Martin Claridge, Donald J Adam
OBJECTIVES: The outcome of endovascular repair (EVAR) for acute TAAA is reported and the applicability of the t-Branch off the shelf (OTS) device is determined. METHODS: Interrogation of a prospectively maintained database identified all patients who underwent EVAR for acute TAAA between September 2012 (when the first non-elective t-Branch case was performed) and November 2015. Early and medium-term outcomes were analysed. Survival and re-intervention-free survival were calculated by Kaplan-Meier analysis...
December 12, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29246081/uncovered-chimney-stent-graft-for-renal-arteries-with-the-nellix-endovascular-aneurysm-sealing-technique
#11
Luca Garriboli, Antonio Maria Jannello
PURPOSE: To describe the application of uncovered chimney stent grafts with the Nellix endovascular aneurysm sealing technique (ChEVAS) for juxtarenal abdominal aortic aneurysms (JAAAs). CASE REPORT: Two patients with JAAA and multiple comorbidities were considered unfit for open surgery and were selected for an endovascular approach. Fenestrated and branched endografts were too expensive, and a chimney endovascular approach was considered inappropriate for the relatively high incidence of proximal type I endoleak and graft migration...
January 1, 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29242065/preliminary-results-of-endovascular-aneurysm-sealing-from-the-multicenter-italian-research-on-nellix-endoprosthesis-irene-study
#12
Bruno Gossetti, Ombretta Martinelli, Michelangelo Ferri, Roberto Silingardi, Fabio Verzini
OBJECTIVE: Because of advances in technology and experience of the operator, endovascular aneurysm repair (EVAR) has supplanted open repair to treat abdominal aortic aneurysm (AAA). The low 30-day mortality and morbidity of EVAR make the endovascular approach particularly suitable for patients at high surgical risk. However, endoleak or endograft migration requiring secondary intervention or open surgical conversion is a limitation of EVAR. The Nellix system (Endologix, Inc, Irvine, Calif) has been designed to seal the entire AAA to overcome these limitations with EVAR...
December 11, 2017: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/29241685/fenestrated-thoracic-endovascular-aortic-repair-using-physician-modified-stent-grafts-for-acute-type-b-aortic-dissection-with-unfavourable-landing-zone
#13
Jiechang Zhu, Lujing Zhao, Xiangchen Dai, Yudong Luo, Hailun Fan, Zhou Feng, Yiwei Zhang, Fanguo Hu
OBJECTIVES: The aim was to evaluate the early results of fenestrated thoracic endovascular aortic repair (fTEVAR) using physician modified stent grafts (PMSGs) to revascularise aortic branches for acute type B aortic dissection (ABAD) with unfavourable proximal landing zone. METHODS: Twenty consecutive patients who underwent fenestrated TEVAR using PMSGs between November 2015 and December 2016 were retrospectively reviewed. Pre-, intra-, and post-operative clinical data were recorded...
December 12, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/29238868/early-experience-and-lessons-learnt-with-customized-fenestrated-thoracic-endovascular-aortic-reconstruction-for-aortic-arch-pathology-in-an-asian-population
#14
Glenn Wei Leong Tan, Lawrence Quek, Bien Peng Tan, Uei Pua
PURPOSE: Thoracic endovascular aortic repair (TEVAR) is the preferred treatment of descending thoracic aorta pathology. However, TEVAR in the aortic arch remains challenging. Customized fenestrated TEVAR (fTEVAR) allows extension of the proximal seal zone, while preserving the involved supra-aortic vessels. There is a paucity of information on fTEVAR; hence, we aim to evaluate our early experience and lessons learnt with fTEVAR in the aortic arch. METHODS: This is a retrospective single-centre review of fTEVAR endografts for aortic arch pathology over 24 months...
December 13, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29221957/endovascular-repair-of-complex-juxtarenal-aortic-aneurysm-using-a-combined-fenestrated-endograft-and-chimney-technique
#15
REVIEW
Zaher Fanari, Nilesh J Goswami
Chimney EVAR (CHEVAR) and Fenestrated EVAR (FEVAR) are two options for management of very complex abdominal aortic aneurysm (AAA). While some anatomical factors may favor one strategy over the other, there are some cases where the anatomical challenges may require using a hybrid approach. We are reporting the case of an 84-year-old male with a 6.8×5.7cm infrarenal abdominal aortic aneurysm that arises immediately below the level of the renal arteries and extends down to just above the iliac bifurcation with occluded celiac and inferior mesenteric arteries and severe bilateral renal artery stenosis with caudally oriented right renal and cranially oriented left renal artery...
November 22, 2017: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/29206004/outcomes-of-endovascular-aortic-repair-in-the-modern-era
#16
Jacob Budtz-Lilly, Anders Wanhainen, Kevin Mani
Monitoring outcomes following endovascular aortic repair (EVAR) is critical. Although evidence from randomized controlled trials has solidified the role of EVAR, the analysis of outcomes and "real-world" data has uncovered limitations, improved the selection of appropriate patients, and underscored the importance of instructions for use. Subsequent studies demonstrated the learning curve of EVAR and gradual improvement of outcomes over time. Outcomes analyses will continue to play an important role, particularly as technological growth of endovascular therapy has enabled treatment of more complex aneurysm pathologies and patients...
December 4, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/29187693/-a-simple-and-efficient-rna-extraction-method-from-deep-sea-hydrothermal-vent-chimney-structures
#17
Hisashi Muto, Yoshihiro Takaki, Miho Hirai, Sayaka Mino, Shigeki Sawayama, Ken Takai, Satoshi Nakagawa
RNA-based microbiological analyses, e.g., transcriptome and reverse transcription-quantitative PCR, require a relatively large amount of high quality RNA. RNA-based analyses on microbial communities in deep-sea hydrothermal environments often encounter methodological difficulties with RNA extraction due to the presence of unique minerals in and the low biomass of samples. In the present study, we assessed RNA extraction methods for deep-sea vent chimneys that had complex mineral compositions. Mineral-RNA adsorption experiments were conducted using mock chimney minerals and Escherichia coli total RNA solution, and showed that detectable RNA significantly decreased possibly due to adsorption onto minerals...
November 30, 2017: Microbes and Environments
https://www.readbyqxmd.com/read/29181602/long-parallel-stent-grafts-for-the-treatment-of-complex-aortic-aneurysms
#18
Daniel Silverberg, Uri Rimon, Daniel Raskin, Moshe Halak
PURPOSE: To describe our experience with the chimney technique in endovascular aneurysm repair (ch-EVAR) using long parallel grafts (PGs) of 100 mm or more for the treatment of complex aortic aneurysms. MATERIALS AND METHODS: From 2009 to 2016, data were prospectively collected for patients who underwent ch-EVAR using long PGs. Data included patient demographics and aortic anatomy, technical success, patency and reintervention rate. RESULTS: A total of 29 long PGs were placed in 18 patients (males 16, average age 71 years)...
November 27, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/29166575/chemical-characterization-and-pharmacological-assessment-of-cashew-gum-extract-anacardium-occidentale-l-polysaccharide-free
#19
Daiany Priscilla Bueno da Silva, Iziara Ferreira Florentino, Lorrane Kelle da Silva Moreira, Adriane Ferreira Brito, Verônica Vale Carvalho, Géssica Adriana Vasconcelos, Boniek Gontijo Vaz, Marcus Antônio Pereira-Junior, Kátia Flávia Fernandes, Elson Alves Costa
ETHNOPHARMACOLOGICAL RELEVANCE: The cashew gum (Anacardium occidentale L.) is used in Brazilian traditional medicine in the treatment of inflammatory conditions, asthma, diabetes, and gastrointestinal disturbs. AIM OF THE STUDY: The present study was aimed the chemical characterization and the investigation of the antinociceptive and anti-inflammatory activities of cashew gum aqueous extract without the presence of polysaccharides in its composition (CGE). MATERIALS AND METHODS: The CGE was obtained after precipitation and removal of polysaccharides using acetone...
November 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29128797/sotalol-enhances-the-anticonvulsant-action-of-valproate-and-diphenylhydantoin-in-the-mouse-maximal-electroshock-model
#20
Monika Banach, Monika Popławska, Kinga K Borowicz-Reutt
BACKGROUND: Sotalol as a drug blocking β-receptors and potassium KCNH2 channels may interact with different substances that affect seizures. Herein, we present interactions between sotalol and four conventional antiepileptic drugs: carbamazepine, valproate, phenytoin and phenobarbital. METHODS: Effects of sotalol and antiepileptics alone on seizures were determined in the electroconvulsive threshold test, while interactions between sotalol and antiepileptic drugs were estimated in the maximal electroshock test in mice...
May 11, 2017: Pharmacological Reports: PR
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