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https://www.readbyqxmd.com/read/28088439/antimicrobial-activity-of-photodynamic-therapy-in-combination-with-colistin-against-a-pan-drug-resistant-acinetobacter-baumannii-isolated-from-burn-patient
#1
Ebrahim Boluki, Hossein Kazemian, Hadi Peeridogaheh, Mohammad Yousef Alikhani, Sima Shahabi, Leili Beytollahi, Roghayeh Ghorbanzadeh
Nosocomially-acquired multi-, extensively-, and pandrug resistant (MDR, XDR, and PDR) strains of microorganisms such as Acinetobacter baumannii remain a serious cause of infection and septic mortality in burn patients. Treatment of patients with nosocomial burn wound infections is often complicated by drug-resistant strains of A. baumannii. Today, many researchers are focusing on the investigation of novel non-antibiotic strategies such as photodynamic therapy (PDT). We report a new PDT strategy that suppresses colistin resistance in PDR A...
January 11, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28081227/diagnostic-accuracy-of-genexpert-mtb-rif-assay-in-comparison-to-conventional-drug-susceptibility-testing-method-for-the-diagnosis-of-multidrug-resistant-tuberculosis
#2
Pratikshya Pandey, Narayan Dutt Pant, Komal Raj Rijal, Bhawana Shrestha, Sirita Kattel, Megha Raj Banjara, Bhagwan Maharjan, Rajendra Kc
Xpert MTB/RIF assay is regarded as a great achievement of modern medicine for the rapid diagnosis of multidrug-resistant tuberculosis (MDR-TB). The main purpose of this study was to determine the performance of Xpert MTB/RIF assay compared to conventional drug susceptibility testing (DST) method for the diagnosis of MDR-TB. A comparative cross sectional study was carried out at German-Nepal Tuberculosis Project, Kathmandu, Nepal, from April 2014 to September 2014. A total of 88 culture positive clinical samples (83 pulmonary and 5 extra-pulmonary) received during the study period were analyzed for detection of multidrug-resistant tuberculosis by both GeneXpert MTB/RIF assay and conventional DST method...
2017: PloS One
https://www.readbyqxmd.com/read/28081169/assessment-of-a-96-well-plate-assay-of-quantitative-drug-susceptibility-testing-for-mycobacterium-tuberculosis-complex-in-china
#3
Hui Xia, Yang Zheng, Bing Zhao, Susan van den Hof, Frank Cobelens, YanLin Zhao
OBJECTIVE: To evaluate the performance of the Sensitire MYCOTB MIC Plate (MYCOTB) which could measure the twelve anti-tuberculosis drugs susceptibility on one 96-wells plate. METHODS: A total of 140 MDR-TB strains and 60 non-MDR strains were sub-cultured and 193 strains were finally tested for drug resistance using MYCOTB and agar proportion method (APM) and another 7 strains failed of subculture. The drugs included ofloxacin (Ofx), moxifloxacin (Mfx), rifampin (RFP), amikacin (Am), rifabutin (Rfb), para-aminosalicylic acid (PAS), ethionamide (Eth), isoniazid (INH), kanamycin (Km), ethambutol (EMB), streptomycin (Sm), and cycloserine(Cs)...
2017: PloS One
https://www.readbyqxmd.com/read/28075052/functional-characterization-and-cell-specificity-of-bvsut1-the-transporter-that-loads-sucrose-into-the-phloem-of-sugar-beet-beta-vulgaris-l-source-leaves
#4
P Nieberl, C Ehrl, B Pommerrenig, D Graus, I Marten, B Jung, F Ludewig, W Koch, K Harms, U-I Flügge, E Neuhaus, R Hedrich, N Sauer
• Sugar beet (Beta vulgaris L.) is one of the most important sugar producing plants worldwide and provides about one third of the sugar consumed by humans. Here we report on the molecular characterization of the BvSUT1 gene and on the func- tional characterization of the encoded transporter. • In contrast to the recently identified, tonoplast-localized sucrose transporter BvTST2.1 from sugar beet taproots, which has evolved within the monosaccharide transporter (MST) superfamily, BvSUT1 represents a classical sucrose transporter and is a typical member of the disaccharide transporter (DST) superfamily...
January 11, 2017: Plant Biology
https://www.readbyqxmd.com/read/28066966/updating-neuropsychological-test-system-for-the-elderly-and-modern-touch-screen-tablet-society-by-resetting-of-the-cut-off-values
#5
Takumi Kawaguchi, Mika Konishi, Akinobu Kato, Motoichiro Kato, Yohei Kooka, Kei Sawara, Ryujin Endo, Takuji Torimura, Kazuyuki Suzuki, Yasuhiro Takikawa
BACKGROUND & AIMS: Covert hepatic encephalopathy (CHE) is frequently seen in cirrhotic patients. CHE can be diagnosed by a computerized neuropsychological test system (NPT); however, NPT has not been updated about two decades in Japan. The aim of this study is to update the NPT for fitting the elderly and modern society by resetting of the cut-off values. METHODS: We enrolled 367 healthy subjects with 40 to 79 years old between 2003 and 2010. NPT consist of following 8 tests: number connection tests A and B, a figure position test, a digit symbol test, a block design test, and reaction time test A, B, and C...
January 8, 2017: Hepatology Research: the Official Journal of the Japan Society of Hepatology
https://www.readbyqxmd.com/read/28050363/first-line-anti-tb-drug-resistance-in-an-urban-area-of-odisha-india
#6
Dasarathi Das, Prakasini Satapathy, Biswanath Murmu
INTRODUCTION: Drug resistance is a major cause for increasing the global burden of Tuberculosis (TB). However in countries with larger geographical areas and different climatic conditions like India the prevalence of drug resistance varies from place to place. Information on anti-TB drug resistance patterns particularly among newly diagnosed cases is crucial for planning an effective TB control program. AIM: To determine the prevalence of resistance against first line anti-TB drugs and Multi Drug Resistance (MDR) in Mycobacterium tuberculosis isolates...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28048860/su-f-p-54-guidelines-to-check-image-registration-qa-of-a-clinical-deformation-registration-software-a-single-institution-preliminary-study
#7
G Gill, S Souri, A Rea, Y Chen, J Antone, X Qian, A Riegel, P Taylor, M Marrero, F Diaz, Y Cao, A Jamshidi, S Barley, V Sorell, G Karangelis, T Button, E Klein
PURPOSE: The objective of this study is to verify and analyze the accuracy of a clinical deformable image registration (DIR) software. METHODS: To test clinical DIR software qualitatively and quantitatively, we focused on lung radiotherapy and analyzed a single (Lung) patient CT scan. Artificial anatomical changes were applied to account for daily variations during the course of treatment including the planning target volume (PTV) and organs at risk (OAR). The primary CT (pCT) and the structure set (pST) was deformed with commercial tool (ImSimQA-Oncology Systems Limited) and after artificial deformation (dCT and dST) sent to another commercial tool (VelocityAI-Varian Medical Systems)...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043620/implementation-of-new-tools-for-multidrug-resistant-tuberculosis-detection-and-control
#8
Robin M Warren
Contrary to classical dogma, molecular epidemiological studies and mathematical modeling clearly show that the global drug-resistant tuberculosis (TB) epidemic is driven by transmission. Furthermore, there is mounting evidence demonstrating that amplification of resistance occurs during treatment, possibly as a result of insufficient active drugs being administered. To control the drug-resistant TB epidemic, it will be essential to implement new, rapid, and highly sensitive and specific diagnostic methods to decrease the diagnostic delay associated with culture-based testing...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043606/ethambutol-resistance-testing-by-mutation-detection-using-mtbdrsl
#9
H Margaryan, S Rüsch-Gerdes, A Hayrapetyan, A Mirzoyan
AIMS AND OBJECTIVES: Despite the successes in managing drug-susceptible TB, drug-resistant (DR) tuberculosis is a major challenge to the effectiveness of National Tuberculosis Program in Armenia, placing the country in the list of 18 high-burden countries for MDR-TB in the WHO European Region. Estimated burden of MDR-TB in 2012 was 9.4 (7-12) and 43 (38-49) among retreatment TB cases. A total of 92 laboratory confirmed cases had been reported to the WHO (57 new and 35 previously treated) out of 511 cases tested for MDR-TB...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043602/screening-new-tuberculosis-patients-in-mali-for-rifampicin-resistance-at-2months
#10
Bassirou Diarra, Aissata B Cissé, Ousmane Kodio, Moumine Sanogo, Bocar Baya, Antieme C G Togo, Amadou Somboro, Mohamed Tolofoudié, Boureima Degoga, Marie Laure Keita, Fatimata Diallo, Natacha Nguiakam, Gagni Coulibaly, Sidy Bane, Yeya Dit Sadio Sarro, Seydou Doumbia, Robert Leo Murphy, Souleymane Diallo, Bouke C Dejong
OBJECTIVE/BACKGROUND: The recent call for universal drug susceptibility testing (DST) for all tuberculosis (TB) patients will be difficult to meet in settings where Xpert rollout is limited, such as low prevalence of HIV and Multi-drug Resistant Tuberculosis (MDR) settings. As recommended by World Health Organization (WHO) guidelines, the success of TB treatment is measured by Ziehl-Neelsen (ZN) microscopy or auramine-rhodamine fluorescent microscopy (FM) on sputum, in which conversion to negative smear at 2months (M) is an important predictor of treatment success, defined as a negative smear at 5M...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043590/use-of-wgs-in-mycobacterium-tuberculosis-routine-diagnosis
#11
Daniela M Cirillo, Andrea M Cabibbe, Maria Rosaria De Filippo, Alberto Trovato, Tullia Simonetti, Gian Maria Rossolini, Enrico Tortoli
OBJECTIVE/BACKGROUND: Whole Genome Sequencing (WGS) is becoming affordable with overall costs comparable to other tests currently in use to perform the diagnosis of drug-resistant tuberculosis (TB) and cluster analysis. The WGS approach allows an "all-in-one" approach providing results on expected sensitivity of the strains, genetic background, epidemiological data, and indication of risk of laboratory cross-contamination. METHODS: Although ideal, WGS from the direct diagnostic specimen is not yet standardized, and to date the two most promising approaches are WGS from early positive liquid culture and targeted sequencing from diagnostic specimens using Next-Generation Technology...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043548/discordance-between-genexpert-assay-and-conventional-drug-susceptibility-testing-in-detecting-rifampicin-resistant-tuberculosis-a-perspective-of-the-line-probe-assay
#12
Ruqaya M Ali, Ahmed A Alsudani
BACKGROUND: Early detection for tuberculosis (TB) and rifampicin-resistant TB (RRTB) is crucial for proper control of this disease. WHO recommended the use of the GeneXpert assay at district level to cover these two public health demands? A study evaluated the diagnostic impact of the GeneXpert assay in detecting TB and RRTB. Odd results were observed in this study in the form of discordance between the GeneXpert assay and the conventional culture and drug-susceptibility testing (DST)...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28030634/evaluation-of-direct-colorimetric-mtt-assay-for-rapid-detection-of-rifampicin-and-isoniazid-resistance-in-mycobacterium-tuberculosis
#13
Gadissa Bedada Hundie, Dawit Woldemeskel, Amare Gessesse
With the spread of multidrug-resistant tuberculosis (MDR-TB) strains there is an increasing need for new accurate and cost-effective methods for a rapid diagnostic and drug susceptibility testing (DST), particularly in low-income countries where tuberculosis is hyperendemic. A colorimetric assay using 3-(4, 5-dimethylthiazol-2-yl)-2, 5- diphenyltetrazolium bromide (MTT) has been suggested as a promising method for DST, especially to rifampicin. In this study, we standardized and evaluated the MTT assay for a rapid direct detection of rifampicin and isoniazid resistant Mycobacterium tuberculosis strains from sputum specimens using Lowenstein-Jensen (LJ) culture medium as a gold standard...
2016: PloS One
https://www.readbyqxmd.com/read/28029028/the-recovery-of-hypothalamic-pituitary-adrenal-axis-is-rapid-in-subclinical-cushing-syndrome
#14
Hee Kyung Kim, Jee Hee Yoon, Yun Ah Jeong, Ho Cheol Kang
BACKGROUND: In subclinical Cushing syndrome (SC), it is assumed that glucocorticoid production is insufficient to cause a clinically recognizable syndrome. Differences in hormonal levels or recovery time of the hypothalamic-pituitary-adrenocortical (HPA) axis after adrenalectomy between patients with overt Cushing syndrome (OC) and SC remain unknown. METHODS: Thirty-six patients (10 with OC and 26 with SC) with adrenal Cushing syndrome who underwent adrenalectomy from 2004 to 2014 were reviewed retrospectively...
December 2016: Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28017383/routine-clinical-quantitative-rest-stress-myocardial-perfusion-for-managing-coronary-artery-disease-clinical-relevance-of-test-retest-variability
#15
Danai Kitkungvan, Nils P Johnson, Amanda E Roby, Monika B Patel, Richard Kirkeeide, K Lance Gould
OBJECTIVES: Positron emission tomography (PET) quantifies stress myocardial perfusion (in cc/min/g) and coronary flow reserve to guide noninvasively the management of coronary artery disease. This study determined their test-retest precision within minutes and daily biological variability essential for bounding clinical decision-making or risk stratification based on low flow ischemic thresholds or follow-up changes. BACKGROUND: Randomized trials of fractional flow reserve-guided percutaneous coronary interventions established an objective, quantitative, outcomes-driven standard of physiological stenosis severity...
December 21, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28012685/pnca-mutations-are-associated-with-slower-sputum-conversion-during-standard-treatment-of-multidrug-resistant-tuberculosis
#16
Xubin Zheng, Zhu Ning, Francis Drobniewski, Jingyong Yang, Qun Li, Zhengdong Zhang, Yi Hu
Despite the strong association between drug resistance and genetic mutations, the value of molecular diagnosis of drug resistance to guide the treatment of multidrug-resistant tuberculosis (MDR-TB) remains unclear. This is particularly relevant in resource-limited areas where it is difficult to perform drug susceptibility testing (DST). Here we investigated the association between drug susceptibility phenotypes and genotypes and treatment outcomes in patients with MDR-TB. This study enrolled 74 consecutive patients with confirmed MDR-TB between 2010 and 2011, and outcomes were followed-up over the 24-month treatment course...
November 24, 2016: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28007660/second-line-drug-susceptibility-testing-to-inform-the-treatment-of-rifampin-resistant-tuberculosis-a-quantitative-perspective
#17
REVIEW
Emily A Kendall, Ted Cohen, Carole D Mitnick, David W Dowdy
Treatment failure and resistance amplification are common among patients with rifampin-resistant tuberculosis (TB). Drug susceptibility testing (DST) for second-line drugs is recommended for these patients, but logistical difficulties have impeded widespread implementation of second-line DST in many settings. To provide a quantitative perspective on the decision to scale up second-line DST, we synthesize literature on the prevalence of second-line drug resistance, the expected clinical and epidemiologic benefits of using second-line DST to ensure that patients with rifampin-resistant TB receive effective regimens, and the costs of implementing (or not implementing) second-line DST for all individuals diagnosed with rifampin-resistant TB...
December 19, 2016: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28003422/maldi-tof-for-combined-species-identification-and-drug-sensitivity-testing-in-mycobacteria
#18
Pieter-Jan Ceyssens, Karine Soetaert, Markus Timke, An Van den Bossche, Katrin Sparbier, Koen De Cremer, Markus Kostrzewa, Marijke Hendrickx, Vanessa Mathys
Species identification and drug susceptibility testing (DST) of mycobacteria is an important yet complex process, traditionally reserved for reference laboratories. Recent technical improvements in MALDI-TOF MS started to facilitate routine mycobacterial identifications in clinical laboratories. In this paper, we investigate the possibility to perform phenotypic MALDI-based DST in mycobacteriology, using the recently described MALDI Biotyper antibiotic susceptibility test rapid assay (MBT-ASTRA™). We randomly selected 72 clinical M...
December 21, 2016: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28000029/prothionamide-susceptibility-testing-of-mycobacterium-tuberculosis-using-the-resazurin-microtitre-assay-and-the-bactecmgit-960-system
#19
Y Tan, B Su, H Zheng, Y Wang, Y Pang
Resazurin microtitre assay (RMA) has been successfully used to detect minimal inhibitory concentrations (MICs) of both first-line and several second-line drugs in drug susceptibility testing (DST) of Mycobacterium tuberculosis (MTB). In this study, we firstly compared prothionamide (PTH) susceptibility testing of Mycobacterium tuberculosis (MTB) using resazurin microtitre assay (RMA) and MGIT. Overall, the sensitivity and specificity of RMA for detecting PTH susceptibility was 96.5% [95% confidence interval (CI): 91...
December 20, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/27999375/a-method-of-detections-fusion-for-gnss-anti-spoofing
#20
Huiqi Tao, Hong Li, Mingquan Lu
The spoofing attack is one of the security threats of systems depending on the Global Navigation Satellite System (GNSS). There have been many GNSS spoofing detection methods, and each of them focuses on a characteristic of the GNSS signal or a measurement that the receiver has obtained. The method based on a single detector is insufficient against spoofing attacks in some scenarios. How to fuse multiple detections together is a problem that concerns the performance of GNSS anti-spoofing. Scholars have put forward a model to fuse different detection results based on the Dempster-Shafer theory (DST) of evidence combination...
December 19, 2016: Sensors
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