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AbdulMajid Al-Mqdashi, Aduwati Sali, Nor Kamariah Noordin, Shaiful J Hashim, Rosdiadee Nordin
Channel rendezvous is an initial and important process for establishing communications between secondary users (SUs) in distributed cognitive radio networks. Due to the drawbacks of the common control channel (CCC) based rendezvous approach, channel hopping (CH) has attracted a lot of research interests for achieving blind rendezvous. To ensure rendezvous within a finite time, most of the existing CH-based rendezvous schemes generate their CH sequences based on the whole global channel set in the network. However, due to the spatial and temporal variations in channel availabilities as well as the limitation of SUs sensing capabilities, the local available channel set (ACS) for each SU is usually a small subset of the global set...
December 10, 2018: Sensors
Eric Gomez-Urena, Rafael J Sierra, Kerryl E Greenwood-Quiantance, Melissa J Karau, James M Steckelberg, Robin Patel
Diagnosis of persistent infection at the time of reimplantation for staged revision of infected arthroplasties is challenging. Implant sonication culture for the diagnosis of prosthetic joint infection (PJI) has improved sensitivity compared to standard periprosthetic tissue culture. We report our experience with periprosthetic tissue culture and sonication culture of antimicrobial agent-containing cement spacers (ACSs) collected during second stages of staged revisions for arthroplasty infection. We studied 87 ACSs from 66 patients undergoing two-stage revision arthroplasty for PJI submitted for sonication culture along with conventional periprosthetic tissue cultures...
December 12, 2018: Journal of Clinical Microbiology
Jingwei Liu, Yiqi Zhang, Yong Hai, Nan Kang, Bo Han
PURPOSE: To conduct a high-level systematic review of the literature to evaluate intravenous and local steroid use in the management of dysphagia after anterior cervical spine surgery. METHODS: We searched the database PubMed, EMBASE, Clinical key, the Cochrane library and Wiley Online Library without time restriction using the terms 'dysphagia' or 'odynophagia' or 'swallowing disorder,' 'steroid,' 'anterior cervical spine surgery.' Randomized controlled trails (RCTs) were selected, and effects of intravenous and local steroids were investigated from these studies...
November 30, 2018: European Spine Journal
Jakhongir F Alidjanov, Kurt G Naber, Ulugbek A Abdufattaev, Adrian Pilatz, Florian M Wagenlehner
BACKGROUND AND OBJECTIVES: Acute uncomplicated cystitis (AC) is common among women. Acute onset of specific typical symptoms may serve as reliable criteria for developing a cost-effective strategy to make an accurate diagnosis of AC. We aimed to evaluate the diagnostic values of most common symptoms and signs of AC depending on their presence and severity. METHODS: The current trial was designed as a case-control study. Data derived from the Acute Cystitis Symptom Score (ACSS) database were analyzed...
November 12, 2018: Urologia Internationalis
Christian Büsel, Ulrich Pomper, Ulrich Ansorge
We investigated the origin of attention capture in the contingent-capture protocol during a search for two colors. When searching for the target color, cues similar to the target capture attention but cues dissimilar to the target do not capture attention. The results are typically explained by top-down contingent capture, a form of proactive control where participants set up attentional control settings (ACSs) for the target and cues matching the ACSs capture attention. However, based on recent research, we hypothesized that the situation could be more complicated during search for several features...
November 6, 2018: Psychonomic Bulletin & Review
Chan Ho Park, Jeehee Roh, Ji-Hyun Youn, Seung-Hyun Son, Ji Hye Park, Soon Young Kim, Tae-Wuk Kim, Seong-Ki Kim
Ethylene regulates numerous aspects of plant growth and development. Multiple external and internal factors coordinate ethylene production in plant tissues. Transcriptional and post-translational regulations of ACC synthases (ACSs), which are key enzymes mediating a rate-limiting step in ethylene biosynthesis have been well characterized. However, the regulation and physiological roles of ACC oxidases (ACOs) that catalyze the final step of ethylene biosynthesis are largely unknown in Arabidopsis. Here, we show that Arabidopsis ACO1 exhibits a tissue-specific expression pattern that is regulated by multiple signals, and plays roles in the lateral root development in Arabidopsis...
October 31, 2018: Molecules and Cells
Maximilian Tscharre, Robert Herman, Miklos Rohla, Edita Piackova, Kris G Vargas, Serdar Farhan, Matthias K Freynhofer, Thomas W Weiss, Kurt Huber
BACKGROUND: Patients with familial hypercholesterolemia (FH) are at increased risk for premature and subsequent cardiovascular disease. Data on long-term major adverse cardiovascular events (MACE) in patients with FH after percutaneous coronary intervention (PCI) in the era of high-intensity statins are scarce. OBJECTIVE: We assessed the prognostic impact of clinically diagnosed FH on long-term MACE, a composite of all-cause death, myocardial infarction, and ischemic stroke in patients admitted for stable coronary artery disease (SCAD) or acute coronary syndromes (ACSs) undergoing PCI...
September 22, 2018: Journal of Clinical Lipidology
Sang-Woong Choi, Hyungseop Kim, In-Cheol Kim, Cheol-Hyun Lee, Jongmin Hwang, Hyoung-Seob Park, Yun-Kyeong Cho, Hyuck-Jun Yoon, Chang-Wook Nam, Seongwook Han, Seung-Ho Hur
PURPOSE: Ultrasonographic contrast enhancement of carotid plaque (CECP) has been used to detect neovascularization of vasa vasorum and plaque. However, it is uncertain whether CECP can provide risk stratification of coronary artery disease (CAD). This study aimed to evaluate the relationship between CECP and manifestations of acute coronary syndrome (ACS) in established CAD patients and to explore the prognostic implication of CECP for cardiovascular (CV) clinical outcomes. METHODS: A medical record review revealed that contrast-enhanced ultrasonography was performed to evaluate carotid atherosclerosis in 209 coronary artery-stented and 105 non-stented patients...
September 2018: Journal of Clinical Ultrasound: JCU
Troy A Webber, Edan A Critchfield, Jason R Soble
To supplement memory-based Performance Validity Tests (PVTs) in identifying noncredible performance, we examined the validity of the two most commonly used nonmemory-based PVTs-Dot Counting Test (DCT) and Wechsler Adult Intelligence Scale-Fourth edition (WAIS-IV) Reliable Digit Span (RDS)-as well as two alternative WAIS-IV Digit Span (DS) subtest PVTs. Examinees completed DCT, WAIS-IV DS, and the following criterion PVTs: Test of Memory Malingering, Word Memory Test, and Word Choice Test. Validity groups were determined by passing 3 (valid; n = 69) or failing ⩾2 (noncredible; n = 30) criterion PVTs...
October 6, 2018: Assessment
Brianna I Katzman, Rita John
BACKGROUND: The psychological distress caused by cancer can remain long after remission. With advanced curative treatments, many pediatric patients continue to have late complications that interfere with neurologic, physical, and social development. OBJECTIVES: The aim of this article is to analyze nine published articles that focus on adolescent cancer survivors (ACSs) and the incidence and risk factors of post-traumatic stress disorder (PTSD) and post-traumatic stress symptoms (PTSSs)...
October 1, 2018: Clinical Journal of Oncology Nursing
Tian Xiao Zhao, Michalis Kostapanos, Charmaine Griffiths, Emma L Arbon, Annette Hubsch, Fotini Kaloyirou, Joanna Helmy, Stephen P Hoole, James H F Rudd, Graham Wood, Keith Burling, Simon Bond, Joseph Cheriyan, Ziad Mallat
INTRODUCTION: Inflammation and dysregulated immune responses play a crucial role in atherosclerosis, underlying ischaemic heart disease (IHD) and acute coronary syndromes (ACSs). Immune responses are also major determinants of the postischaemic injury in myocardial infarction. Regulatory T cells (CD4+ CD25+ FOXP3+ ; Treg) induce immune tolerance and preserve immune homeostasis. Recent in vivo studies suggested that low-dose interleukin-2 (IL-2) can increase Treg cell numbers. Aldesleukin is a human recombinant form of IL-2 that has been used therapeutically in several autoimmune diseases...
September 17, 2018: BMJ Open
Jean-Baptiste Renault, Gaëtan Aüllo-Rasser, Mathias Donnez, Sébastien Parratte, Patrick Chabrand
Increasing use of patient-specific surgical procedures in orthopaedics means that patient-specific anatomical coordinate systems (ACSs) need to be determined. For knee bones, automatic algorithms constructing ACSs exist and are assumed to be more reliable than manual methods, although both approaches are based on non-unique numerical reconstructions of true bone geometries. Furthermore, determining the best algorithms is difficult, as algorithms are evaluated on different datasets. Thus, in this study, we developed 3 algorithms, each with 3 variants, and compared them with 5 from the literature on a dataset comprising 24 lower-limb CT-scans...
August 30, 2018: Journal of Biomechanics
Kaivan Vaidya, Gonzalo Martínez, Sanjay Patel
PURPOSE: Because inflammation is a key process implicated in the pathogenesis of atherosclerosis at all stages, including plaque formation, progression, instability, and rupture, and because colchicine has unique anti-inflammatory properties, this review article summarizes the pathophysiologic mechanisms underpinning inflammation in atherosclerosis and acute coronary syndrome (ACS), outlines anti-inflammatory therapeutic approaches that have been tested thus far, and evaluates the evidence supporting the potential role of colchicine in improving outcomes and reducing cardiovascular morbidity and mortality in patients after ACS...
September 2, 2018: Clinical Therapeutics
Dong Hoon Kim, Soo Hoon Lee, Seong Chun Kim, Taeyun Kim, Changwoo Kang, Jin Hee Jeong, Yong Joo Park, Daesung Lim, Sang Bong Lee
INTRODUCTION: It is difficult to differentiate whether coronary or non-coronary causes in patients with elevated troponin I (TnI) in emergency department (ED). The aim of this study was to develop a clinical decision tool for differentiating a coronary cause in the patients with elevated TnI. METHODS: This was a retrospective observational study that enrolled consecutive ED patients. Patients were included in the study if they were ≥16 years of age, had admitted through ED with a medical illness, and TnI levels at initial evaluation in the ED were ≥0...
August 15, 2018: American Journal of Emergency Medicine
Katherine Bedoya, Oscar Coltell-Simon, Felipe Cabarcas, Juan F Alzate
Abundance and diversity of microbial communities in biosolids are variable and poorly studied in the tropics, and it is known that rainfall is one of the events that could affect the phylogenetic and functional microbial structure. In the present study, using NGS technics, we studied the microbial diversity as well as the methanogenesis pathway in one of the largest WWTP in Colombia. Besides, we sampled and analyzed biosolids from rainy season and dry season. Phylogenetic classification showed a predominance of bacteria in both samples and difference in the dominant groups depending on the rainfall season...
January 15, 2019: Science of the Total Environment
Abdelrahman H Elsayed, Xueyuan Cao, Kristine R Crews, Varsha Gandhi, William Plunkett, Jeffrey E Rubnitz, Raul C Ribeiro, Stanley B Pounds, Jatinder K Lamba
AIM: Cytarabine (Ara-C), a mainstay of acute myeloid leukemia (AML) treatment, is a prodrug requiring activation to ara-CTP for its antileukemic activity. Aim of this study was to evaluate impact of genetic variants in the key genes involved in ara-C metabolism on the leukemic cell intracellular levels of ara-CTP. METHOD:  We investigated SNPs in 14 ara-C metabolic-pathway genes, for association with intracellular ara-CTP levels, in leukemic cells obtained post-initiation of cytarabine infusion in pediatric AML patients (n = 68)...
September 1, 2018: Pharmacogenomics
Marcin Ojrzanowski, Łukasz Figiel, Jan Z Peruga, Sonu Sahni, Jarosław D Kasprzak
BACKGROUND: The Global Registry of Acute Coronary Events (GRACE) study produced a scale for risk stratification in acute coronary syndromes (ACSs). Pregnancy-associated plasma protein A (PAPP-A) serum concentration was implicated as a marker of unstable atherosclerotic plaques. OBJECTIVES: We hypothesized that the measurement of the concentration of PAPP-A on admission may improve the stratification of cardiovascular risk in suspected ACS patients. MATERIAL AND METHODS: We studied 70 patients with chest pain suggesting ACS diagnosis on admission...
July 30, 2018: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
Sina Mashayekhi, Mojtaba Ziaee, Alireza Garjani, Parvin Sarbakhsh, Samad Ghaffari
BACKGROUND: Biomarkers possess important diagnostic and prognostic value in acute coronary syndromes (ACSs). Soluble lectin-like oxidized low-density lipoprotein receptor-1 (sLOX-1) is one of the markers involved in atherosclerotic plaque vulnerability and rupture. OBJECTIVE: This study aimed to evaluate the prognostic value of sLOX-1 through its correlation with Thrombolysis in Myocardial Infarction (TIMI) risk score and its possible association with clinical outcomes in 2 major spectrums of ACS...
September 2018: Journal of Emergency Medicine
Mohamed M Omran, Faten M Zahran, Mohamed Kadry, Arafa A M Belal, Tarek M Emran
Myeloperoxidase (MPO) is an inflammatory marker, elevated in acute coronary syndromes (ACSs), especially in acute myocardial infarction (AMI) cases. This study aimed to evaluate the diagnostic power of MPO in AMI patients. MPO, creatine kinase (CK) MB, and Troponin I (cTn I) were performed for all study patients. Area under the curves (AUCs) and 95% confidence intervals (CI); P values of baseline levels of MPO for discriminating AMI patients from noncoronary chest pain (NCCP) patients, stable angina (SA) patients, and unstable angina (UA) patients were 0...
2018: Journal of Immunoassay & Immunochemistry
Sang A Cho, Yang Seok Cho
An attentional control setting (ACS), which is based on the task goal, induces involuntary attentional capture by a stimulus possessing a target-defining feature. It is unclear whether ACSs are maintained for multiple targets defined as conjunctions of a color and location. In the present study we examined the possibility of local ACSs for dual targets defined as combinations of color and location, using different paradigms: visual search in Experiment 1, and spatial cueing in Experiment 2. In Experiment 1, a distractor captured attention only when its features matched the ACSs...
October 2018: Attention, Perception & Psychophysics
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