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https://www.readbyqxmd.com/read/28505525/thrombin-generation-and-intracranial-atherosclerotic-disease-in-patients-with-a-transient-ischaemic-attack
#1
Elisabetta Favaretto, Michelangelo Sartori, Cristina Legnani, Francesca Rondelli, Michela Cini, Maria Guarino, Benilde Cosmi
BACKGROUND: Intracranial atherosclerotic disease (ICAD) is responsible for at least 10% of transient ischaemic attacks (TIA). Thrombin generation has been shown to be associated with several atherosclerotic conditions and may be relevant in the pathogenesis of TIA from ICAD. OBJECTIVE: To evaluate the association between thrombin generation and ICAD in patients with TIA. MATERIALS AND METHODS: Consecutive patients with confirmed diagnosis of TIA by vascular neurologist were enrolled...
May 9, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28493109/effectiveness-of-the-conservative-therapy-for-symptomatic-isolated-celiac-artery-dissection
#2
Shaoqin Li, Lihua Cheng, Jianfei Tu, Yabin Jiao, Xulu Wu, Zhongling Wang, Dengke Zhang, Guomin Jiang, Zhongzhi Jia
OBJECTIVE: To investigate the effectiveness of the conservative therapy for symptomatic isolated celiac artery dissection (ICAD). METHODS: Patients with symptomatic ICAD diagnosed on CT between February 2006 and June 2016 at three institutions were included. RESULTS: During the study period, a total of 24 patients (22 men, 2 women) were included in this retrospective study. Patients most commonly presented with epigastric pain (n = 21) or back pain (n = 3)...
May 10, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28405479/comparison-of-biofilm-formation-capacities-of-two-clinical-isolates-of-staphylococcus-epidermidis-with-and-without-icaa-and-icad-genes-on-intraocular-lenses
#3
Sertaç Argun Kıvanç, Merih Kıvanç, Volkan Kılıç, Gülay Güllülü, Ahmet Tuncer Özmen
OBJECTIVES: To compare biofilm formations of two Staphylococcus epidermidis (S. epidermidis) isolates with known biofilm formation capacities on four different intraocular lenses (IOL) that have not been studied before. MATERIALS AND METHODS: Two isolates obtained from ocular surfaces and identified in previous studies and stored at -86 °C in 15% glycerol in the microbiology laboratory of the Anadolu University Department of Biology were purified and used in the study...
April 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28400985/spanning-from-the-west-to-east-an-updated-review-on-endovascular-treatment-of-intracranial-atherosclerotic-disease
#4
REVIEW
Mohammed Hussain, Neil Datta, Zhe Cheng, David Dornbos, Asif Bashir, Ibrahim Sultan, Tapan Mehta, Faris Shweikeh, Paul Mazaris, Nora Lee, Amre Nouh, Xiaokun Geng, Yuchuan Ding
Ischemic stroke is a major cause of morbidity and mortality, incurring significant cost. Intracranial atherosclerotic disease (ICAD) accounts for 10-15% of ischemic stroke in Western societies, but is an underlying pathology in up to 54% of ischemic strokes in Asian populations. ICAD has largely been treated with medical management, although a few studies have examined outcomes following endovascular treatment. Our objective was to summarize the major trials that have been performed thus far in regard to the endovascular treatment of ICAD and to provide direction for future management of this disease process...
April 2017: Aging and Disease
https://www.readbyqxmd.com/read/28330958/intracranial-atherosclerosis-and-dementia-the-atherosclerosis-risk-in-communities-aric-study
#5
MULTICENTER STUDY
Jennifer L Dearborn, Yiyi Zhang, Ye Qiao, Muhammad Fareed K Suri, Li Liu, Rebecca F Gottesman, Andreea M Rawlings, Thomas H Mosley, Alvaro Alonso, David S Knopman, Eliseo Guallar, Bruce A Wasserman
OBJECTIVE: To explore the association of intracranial atherosclerotic disease (ICAD) with mild cognitive impairment (MCI) and dementia. METHODS: From 2011 to 2013, 1,744 participants completed high-resolution vessel wall MRI from the population-based Atherosclerosis Risk in Communities Study by a sampling strategy that allowed weighting back to the cohort. We defined ICAD by plaque features (presence, territory, stenosis, number). Trained clinicians used an algorithm incorporating information from interviews and neuropsychological and neurologic examinations to adjudicate for MCI and dementia...
April 18, 2017: Neurology
https://www.readbyqxmd.com/read/28320162/rnf213-rs112735431-polymorphism-in-intracranial-artery-steno-occlusive-disease-and-moyamoya-disease-in-koreans
#6
Min-Gyu Park, Jin-Hong Shin, Sang Weon Lee, Hae Rim Park, Kyung-Pil Park
BACKGROUND: The rs112735431 polymorphism of the RNF213, a susceptibility variant for moyamoya disease (MMD), may be associated with non-MMD intracranial artery steno-occlusive disease of non-MMD type (non-MMD ICAD) in Asian. We investigated whether the rs112735431 polymorphism of the RNF213 affect the development of non-MMD ICAD in Koreans compared to MMD and control group. METHODS: We included 31 patients with non-MMD ICAD, 25 patients with MMD, and 100 participants as control group...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28315432/splicing-factors-of-sr-and-hnrnp-families-as-regulators-of-apoptosis-in-cancer
#7
Hanna Kędzierska, Agnieszka Piekiełko-Witkowska
SR and hnRNP proteins were initially discovered as regulators of alternative splicing: the process of controlled removal of introns and selective joining of exons through which multiple transcripts and, subsequently, proteins can be expressed from a single gene. Alternative splicing affects genes involved in all crucial cellular processes, including apoptosis. During cancerogenesis impaired apoptotic control facilitates survival of cells bearing molecular aberrations, contributing to their unrestricted proliferation and chemoresistance...
March 14, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28297746/screening-of-anti-biofilm-compounds-from-marine-derived-fungi-and-the-effects-of-secalonic-acid-d-on-staphylococcus-aureus-biofilm
#8
Jie Wang, Xu-Hua Nong, Xiao-Yong Zhang, Xin-Ya Xu, Muhammad Amin, Shu-Hua Qi
Biofilm formation of Staphylococcus aureus is one of the mechanisms of its drug resistance. Anti-biofilm screening of 106 compounds from marine-derived fungi displayed that 12 compounds inhibited S. aureus biofilm formation by > 50% at the concentration of 100 μg/ml, and only secalonic acid D (SAD) and B inhibited by > 90% at 6.25 μg/ml without inhibiting cell growth after 24-hour incubation. Meanwhile, it was found that the double bond between C-1 and C-10 of citrinin derivatives and the C-C connection position of two chromone monomers may be important for their anti-biofilm activities...
March 15, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28283006/-investigation-of-biofilm-formation-properties-of-staphylococcus-isolates
#9
Duygu Nilüfer Öcal, İştar Dolapçı, Zeynep Ceren Karahan, Alper Tekeli
Biofilm production is an important virulence factor which allows staphylococci to adhere to medical devices. The principal component of biofilm is a "polysaccharide intercellular adhesin (PIA)" which is composed of a beta-1,6-N-acetylglucosamine polymer synthesized by an enzyme (N-acetylglucosamine transferase) encoded by the ica operon found on the bacterial chromosome. This operon is composed of four genes (A, B, C, and D), and a transposable element IS256. In this study, we aimed to determine the biofilm production characteristics of invasive/non-invasive staphylococcus isolates and different staphylococcus species...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28277404/associations-of-vigorous-intensity-physical-activity-with-biomarkers-in-youth
#10
Justin B Moore, Michael W Beets, Keith Brazendale, Steven N Blair, Russell R Pate, Lars B Andersen, Sigmund A Anderssen, Anders Grøntved, Pedro C Hallal, Katarzyna Kordas, Susi Kriemler, John J Reilly, Luis B Sardinha
INTRODUCTION: Physical activity (PA) conveys known cardiometabolic benefits to youth, but the contribution of vigorous-intensity PA (VPA) to these benefits is unknown. Therefore, we sought to determine, a) the associations between VPA and cardiometabolic biomarkers independent of moderate-intensity PA (MPA) and time sedentary, and b) the accelerometer cutpoint that best represents the threshold for health-promoting VPA in youth. METHODS: Data from the International Children's Accelerometry Database (ICAD) were analyzed in 2015...
March 8, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28273724/imaging-angiogenesis-using-68-ga-nota-prgd2-positron-emission-tomography-computed-tomography-in-patients-with-severe-intracranial-atherosclerotic-disease
#11
Shi Shu, Li Zhang, Yi Cheng Zhu, Fang Li, Li Ying Cui, Hao Wang, Yi Sun, Pei Lin Wu, Zhao Hui Zhu, Bin Peng
Angiogenesis is a critical compensation route, which has been demonstrated in the brain following ischemic stroke; however, few studies have investigated angiogenesis in chronic intracranial atherosclerosis disease (ICAD). We used (68)Ga-NOTA-PRGD2 positron emission tomography/computed tomography based imaging to detect angiogenesis in chronic ICAD and to explore the factors that may have affected it. A total of 21 participants with unilateral severe chronic ICAD were included in the study. Of the 21 participants, 19 were men; the mean (SD) age was 52 (15) years...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28237430/evaluation-of-impact-of-an-external-breast-shield-flexishield-in-electronic-brachytherapy-for-breast-iort-a-phantom-study
#12
Yongbok Kim, Jason Wei-Yeong Huynh, Victor J Gonzalez
PURPOSE: To investigate Axxent (iCAD, Inc., San Jose, CA) electronic brachytherapy balloon deformation and its dosimetric impact because of an external flexible shield (FlexiShield [FS]; iCAD, Inc.). METHODS AND MATERIALS: Prostheses breast tissue phantom overlaid three spherical balloon applicators to simulate three clinical scenarios depending on minimum skin-to-balloon surface spacing (SS): balloon with SS of 2 cm, 1 cm, and balloon with 1 cm SS and touching the chest wall...
May 2017: Brachytherapy
https://www.readbyqxmd.com/read/28214190/biofilm-formation-by-staphylococcus-aureus-isolates-from-a-dental-clinic-in-konya-turkey
#13
Emrah Torlak, Emre Korkut, Ali T Uncu, Yağmur Şener
The ability of Staphylococcus aureus to form biofilm is considered to be a major virulence factor influencing its survival and persistence in both the environment and the host. Biofilm formation in S. aureus is most frequently associated with production of polysaccharide intercellular adhesion by ica operon-encoded enzymes. The present work aimed at evaluating the in vitro biofilm production and presence of the icaA and icaD genes in S. aureus isolates from a dental clinic in Konya, Turkey. The surfaces of inanimate objects were sampled over a period of six months...
February 14, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28131956/evaluation-of-the-biofilm-forming-ability-and-its-associated-genes-in-staphylococcus-species-isolates-from-bovine-mastitis-in-argentinean-dairy-farms
#14
Verónica Felipe, Carolina A Morgante, Paola S Somale, Florencia Varroni, María L Zingaretti, Romina A Bachetti, Silvia G Correa, Carina Porporatto
Staphylococcus aureus and coagulase-negative staphylococci (CNS) are important causes of intramammary infection in dairy cattle, and their ability to produce biofilm is considered an important virulence property in the pathogenesis of mastitis. However, the published date on mechanisms and factors involved in infection persistence in the mammary gland remains unclear. The aim of this study was to investigate whether the main Staphylococcus species involved in bovine intramammary infections possess specific characteristics that promote colonization of the udder...
March 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28047586/su-g-201-10-experimental-determination-of-modified-tg-43-dosimetry-parameters-for-the-xoft-axxent%C3%A2-electronic-brachytherapy-source
#15
S Simiele, B Palmer, L DeWerd
PURPOSE: The establishment of an air kerma rate standard at NIST for the Xoft Axxent(®) electronic brachytherapy source (Axxent(®) source) motivated the establishment of a modified TG-43 dosimetry formalism. This work measures the modified dosimetry parameters for the Axxent(®) source in the absence of a treatment applicator for implementation in Xoft's treatment planning system. METHODS: The dose-rate conversion coefficient (DRCC), radial dose function (RDF) values, and polar anisotropy (PA) were measured using TLD-100 microcubes with NIST-calibrated sources...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047086/su-g-tep2-02-characterization-of-an-improved-x-ray-source-for-use-with-the-xoft-surface-applicator
#16
L Kelley, R Neimeyer, T Rusch
PURPOSE: To measure the depth dose distribution and half value layers of an updated x-ray source using the Xoft Axxent Surface Applicator. METHODS: Modifications were made to the existing Axxent HDR X-ray source to increase the dose rate and improve the source life time. Measurements were made comparing dose distributions of this improved x-ray source and the existing Axxent HDR X-ray source. All sources were spatially characterized in a water tank prior to testing and each source passed all acceptance testing prior to measurement...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/27913076/biofilm-production-and-beta-lactamic-resistance-in-brazilian-staphylococcus-aureus-isolates-from-bovine-mastitis
#17
Viviane Figueira Marques, Cássia Couto da Motta, Bianca da Silva Soares, Dayanne Araújo de Melo, Shana de Mattos de Oliveira Coelho, Irene da Silva Coelho, Helene Santos Barbosa, Miliane Moreira Soares de Souza
Staphylococcus spp. play an important role in the etiology of bovine mastitis. Staphylococcus aureus is considered the most relevant species due to the production of virulence factors such as slime, which is required for biofilm formation. This study aimed to evaluate biofilm production and its possible relation to beta-lactamic resistance in 20 S. aureus isolates from bovine mastitic milk. The isolates were characterized by pheno-genotypic and MALDI TOF-MS assays and tested for genes such as icaA, icaD, bap, agr RNAIII, agr I, agr II, agr III, and agr IV, which are related to slime production and its regulation...
January 2017: Brazilian Journal of Microbiology: [publication of the Brazilian Society for Microbiology]
https://www.readbyqxmd.com/read/27902784/dynamic-in-vivo-mutations-within-the-ica-operon-during-persistence-of-staphylococcus-aureus-in-the-airways-of-cystic-fibrosis-patients
#18
Bianca Schwartbeck, Johannes Birtel, Janina Treffon, Lars Langhanki, Alexander Mellmann, Devika Kale, Janina Kahl, Nina Hirschhausen, Claudia Neumann, Jean C Lee, Friedrich Götz, Holger Rohde, Hanae Henke, Peter Küster, Georg Peters, Barbara C Kahl
Cystic fibrosis (CF) is associated with chronic bacterial airway infections leading to lung insufficiency and decreased life expectancy. Staphylococcus aureus is one of the most prevalent pathogens isolated from the airways of CF patients. Mucoid colony morphology has been described for Pseudomonas aeruginosa, the most common pathogen in CF, but not for S. aureus. From the airways of 8 of 313 CF patients (2.5%) mucoid S. aureus isolates (n = 115) were cultured with a mean persistence of 29 months (range 1 month, 126 months)...
November 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27889140/genotyping-of-methicillin-resistant-staphylococcus-aureus-mrsa-isolated-from-milk-and-dairy-products-in-south-italy
#19
M G Basanisi, G La Bella, G Nobili, I Franconieri, G La Salandra
Methicillin-resistant Staphylococcus aureus (MRSA) is a pathogen emerging in hospitals as well as community and livestock. MRSA is a significant and costly public health concern because it may enter the human food chain and contaminate milk and dairy products causing foodborne illness. This study aimed to determine the occurrence and the characteristics of MRSA isolated from 3760 samples of milk and dairy products in a previous survey conducted in southern Italy during 2008-2014. Overall out of 484 S. aureus strains isolated, 40 (8...
April 2017: Food Microbiology
https://www.readbyqxmd.com/read/27865056/the-caspase-activated-dnase-apoptosis-and-beyond
#20
REVIEW
Brian D Larsen, Claus S Sørensen
Organismal development and function requires multiple and accurate signal transduction pathways to ensure that proper balance between cell proliferation, differentiation, inactivation, and death is achieved. Cell death via apoptotic caspase signal transduction is extensively characterized and integral to this balance. Importantly, the view of apoptotic signal transduction has expanded over the previous decades. Subapoptotic caspase signaling has surfaced as mechanism that can promote the adoption of a range of cellular fates...
April 2017: FEBS Journal
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