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https://www.readbyqxmd.com/read/29035211/error-correcting-factorization
#1
Miguel Angel Bautista, Oriol Pujol, Fernando de la Torre, Sergio Escalera
Error Correcting Output Codes (ECOC) is a successful technique in multi-class classification, which is a core problem in Pattern Recognition and Machine Learning. A major advantage of ECOC over other methods is that the multi-class problem is decoupled into a set of binary problems that are solved independently. However, literature defines a general error-correcting capability for ECOCs without analyzing how it distributes among classes, hindering a deeper analysis of pairwise error-correction. To address these limitations this paper proposes an Error-Correcting Factorization (ECF) method...
October 16, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/29024715/proposal-of-a-flow-scheme-for-the-chemicalform-based-quantitative-analysis-of-chlorine-compounds-in-pulp-for-sanitary-products-and-verification-of-safety
#2
Takeharu Wada, Kei Iwasaki, Yasushi Minobe, Mitsuhiro Wada, Shigeo Imai, Satoko Ishii
To determine the amounts and chemical forms of chlorine compounds in elemental chlorine-free (ECF) bleached pulp for sanitary products, a chemical-form-based quantitative analysis flow scheme was created. The scheme involves quantitative determination of compounds eluted in elution tests assuming dermal exposure. The results indicated that most of the chlorine compounds in pulp used for sanitary products were insoluble organically bound chlorine and water-soluble chlorides consisting of chloride ions. The total amount of chlorine obtained by analysis of the total chlorine in the pulp products was close to the sum of the amounts of water-soluble chlorides, residual chlorine, chloroacetic acids, and insoluble organically bound chlorine...
October 9, 2017: Regulatory Toxicology and Pharmacology: RTP
https://www.readbyqxmd.com/read/29018122/the-bvgas-regulon-of-bordetella-pertussis
#3
Kyung Moon, Richard P Bonocora, David D Kim, Qing Chen, Joseph T Wade, Scott Stibitz, Deborah M Hinton
Nearly all virulence factors in Bordetella pertussis are activated by a master two-component system, BvgAS, composed of the sensor kinase BvgS and the response regulator BvgA. When BvgS is active, BvgA is phosphorylated (BvgA~P), and virulence-activated genes (vags) are expressed [Bvg(+) mode]. When BvgS is inactive and BvgA is not phosphorylated, virulence-repressed genes (vrgs) are induced [Bvg(-) mode]. Here, we have used transcriptome sequencing (RNA-seq) and reverse transcription-quantitative PCR (RT-qPCR) to define the BvgAS-dependent regulon of B...
October 10, 2017: MBio
https://www.readbyqxmd.com/read/28993557/biological-functions-of-glucolipids-in-bacillus-subtilis
#4
Satoshi Matsuoka
Glyceroglycolipids are very important in Gram-positive bacteria and cyanobacteria. In Bacillus subtilis, a model organism for the Gram-positive bacteria, the ugtP mutant, which lacks glyceroglucolipids, shows abnormal morphology. Lack of glucolipids has many consequences: abnormal localization of the cytoskeletal protein MreB and activation of some extracytoplasmic function (ECF) sigma factors (σ(M), σ(V) and σ(X)) in the log phase are two examples. Conversely, the expression of monoglucosyldiacylglycerol (MGlcDG) by 1,2-diacylglycerol 3-glucosyltransferase from Acholeplasma laidlawii (alMGS) almost completely suppresses the ugtP disruptant phenotype...
October 6, 2017: Genes & Genetic Systems
https://www.readbyqxmd.com/read/28976791/adjuvant-chemoradiotherapy-with-epirubicin-cisplatin-and-fluorouracil-compared-with-adjuvant-chemoradiotherapy-with-fluorouracil-and-leucovorin-after-curative-resection-of-gastric-cancer-results-from-calgb-80101-alliance
#5
Charles S Fuchs, Donna Niedzwiecki, Harvey J Mamon, Joel E Tepper, Xing Ye, Richard S Swanson, Peter C Enzinger, Daniel G Haller, Tomislav Dragovich, Steven R Alberts, Georg A Bjarnason, Christopher G Willett, Leonard L Gunderson, Richard M Goldberg, Alan P Venook, David Ilson, Eileen O'Reilly, Kristen Ciombor, David J Berg, Jeffrey Meyerhardt, Robert J Mayer
Purpose After curative resection of gastric or gastroesophageal junction adenocarcinoma, Intergroup Trial 0116 (Phase III trial of postoperative adjuvant radiochemotherapy for high risk gastric and gastroesophageal junction adenocarcinoma: Demonstrated superior survival for patients who received postoperative chemoradiotherapy with bolus fluorouracil (FU) and leucovorin (LV) compared with surgery alone. CALGB 80101 (Alliance; Phase III Intergroup Trial of Adjuvant Chemoradiation After Resection of Gastric or Gastroesophageal Adenocarcinoma) assessed whether a postoperative chemoradiotherapy regimen that replaced FU plus LV with a potentially more active systemic therapy could further improve overall survival...
October 4, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28974984/transarterial-infusion-of-epirubicin-and-cisplatin-combined-with-systemic-infusion-of-5-fluorouracil-versus-transarterial-chemoembolization-using-doxorubicin-for-unresectable-hepatocellular-carcinoma-with-portal-vein-tumor-thrombosis-a-retrospective-analysis
#6
Sung Won Lee, Hae Lim Lee, Nam Ik Han, Jung Hyun Kwon, Soon Woo Nam, Jeong Won Jang, Si Hyun Bae, Jong Young Choi, Seung Kew Yoon
BACKGROUND: More than one-third of hepatocellular carcinoma (HCC) patients are diagnosed at advanced stage with portal vein tumor thrombosis (PVTT) or extrahepatic metastasis. However, the outcomes of current therapeutic approaches are unsatisfactory. As a novel therapeutic strategy for unresectable HCC with PVTT, we analyzed the outcomes of transarterial infusion of epirubicin and cisplatin combined with systemic infusion of 5-fluorouracil (TAC-ECF) and compared its therapeutic effects and toxicity with transarterial chemoembolization (TACE) using doxorubicin (DOX)...
October 2017: Therapeutic Advances in Medical Oncology
https://www.readbyqxmd.com/read/28972045/pharmacogenetic-analysis-of-the-uk-mrc-magic-trial-association-of-polymorphisms-with-toxicity-and-survival-in-patients-treated-with-perioperative-ecf-chemotherapy
#7
Elizabeth Smyth, Shenli Zhang, David Cunningham, Andrew Wotherspoon, Richie Soong, Clare Peckitt, Nicola Valeri, Matteo Fassan, Massimo Rugge, Alicia Fc Okines, William Allum, Sally Stenning, Matthew Nankivell, Ruth E Langley, Patrick Tan
PURPOSE: Germline polymorphisms may affect chemotherapy efficacy and toxicity. We examined the effect of polymorphisms in drug metabolism and DNA repair genes on pathological response rates, survival, and toxicity for patients randomised to surgery alone or perioperative ECF chemotherapy in the MRC MAGIC trial. EXPERIMENTAL DESIGN: DNA was extracted from non-tumor resection FFPE blocks. ERCC1, ERCC2, XRCC1, DYPD, and OPRT SNPs were evaluated using Sequenom, GSTP1, GSTT1 deletion and TYMS (TS) 5' 2R/3R using multiplex PCR...
October 2, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28969779/seasonal-occurrence-of-theileria-parva-infection-and-management-practices-amongst-maasai-pastoralist-communities-in-monduli-district-northern-tanzania
#8
Esther G Kimaro, Siobhan M Mor, Paul Gwakisa, Jenny-Ann Toribio
Theileria parva causes an economically devastating tick-borne disease called East Coast fever (ECF), which affects cattle in central, eastern and southern Africa. Determination of seasonal infection rates for T. parva is crucial for epidemiological understanding and for strengthening ECF management practices. However, this information is lacking for most pastoralist areas with high livestock density, such as the Monduli District in the Maasai steppe, northern Tanzania. A cross-sectional study was carried out to estimate the prevalence of T...
November 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28964647/real-life-practice-of-sweat-testing-in-europe
#9
N Cirilli, K W Southern, R Buzzetti, J Barben, L Nährlich, A Munck, M Wilschanski, K De Boeck, N Derichs
Evidence based guidelines exist for sweat testing, which remains a key component of a diagnosis of cystic fibrosis (CF), especially following newborn bloodspot screening (NBS). There are emerging challenges with respect to maintaining a valid sweat test service, notably a smaller number of sweat tests ordered in regions with established NBS programmes where Pediatricians refer less children for sweat testing, younger patients and equipment becoming obsolete. The ECFS Diagnostic Network Working Group has undertaken a comprehensive survey to better define sweat test practice across Europe...
September 27, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28963700/enterocutaneous-fistulas-a-primer-for-radiologists-with-emphasis-on-ct-and-mri
#10
REVIEW
Massimo Tonolini, Paolo Magistrelli
Enterocutaneous fistulas (ECFs) represent abnormal communications between the gastrointestinal tract and the skin. Nowadays, the majority (~80%) of ECFs develops secondary to abdominal surgeries; alternative, less common causes include chronic inflammatory bowel diseases (IBD) such as Crohn's disease, tumours, and radiation enteritis in descending order of frequency. These rare disorders require thorough patient assessment and multidisciplinary management to limit the associated morbidity and mortality. This pictorial review includes an overview of causes, clinical manifestations, complications and management of ECFs...
September 29, 2017: Insights Into Imaging
https://www.readbyqxmd.com/read/28960943/dynamic-combinatorial-chemistry-to-identify-binders-of-thit-an-s-component-of-the-energy-coupling-factor-transporter-for-thiamine
#11
Leticia Monjas, Lotteke J Y M Swier, Inda Setyawati, Dirk Jan Slotboom, Anna Katharina Herta Hirsch
We applied dynamic combinatorial chemistry (DCC) to identify ligands of ThiT, the S-component of the energy-coupling factor (ECF) transporter for thiamine in Lactococcus lactis. We used a pre-equilibrated dynamic combinatorial library (DCL) and saturation-transfer difference (STD)-NMR to identify ligands of ThiT. This is the first report in which DCC is used for fragment growing to an ill-defined pocket, and one of the first reports for its application with an integral membrane protein as target.
September 27, 2017: ChemMedChem
https://www.readbyqxmd.com/read/28934483/the-fused-snoal_2-domain-in-the-mycobacterium-tuberculosis-sigma-factor-%C3%AF-j-modulates-promoter-recognition
#12
Kapil Goutam, Arvind K Gupta, Balasubramanian Gopal
Extra-cytoplasmic function (ECF) σ-factors are widespread in bacteria, linking environmental stimuli with changes in gene expression. These transcription factors span several phylogenetically distinct groups and are remarkably diverse in their activation and regulatory mechanisms. Here, we describe the structural and biochemical features of a Mycobacterium tuberculosis ECF factor σJ that suggests that the SnoaL_2 domain at the C-terminus can modulate the activity of this initiation factor in the absence of a cognate regulatory anti-σ factor...
September 19, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28931045/effect-of-extracytoplasmic-function-sigma-factors-on-autoaggregation-hemagglutination-and-cell-surface-properties-of-porphyromonas-gingivalis
#13
Kazutaka Fujise, Yuichiro Kikuchi, Eitoyo Kokubu, Kazuko Okamoto-Shibayama, Kazuyuki Ishihara
Porphyromonas gingivalis is a bacterium frequently isolated from chronic periodontal lesions and is involved in the development of chronic periodontitis. To colonize the gingival crevice, P. gingivalis has to adapt to environmental stresses. Microbial gene expression is regulated by transcription factors such as those in two-component systems and extracytoplasmic function (ECF) sigma factors. ECF sigma factors are involved in the regulation of environmental stress response genes; however, the roles of individual ECF sigma factors are largely unknown...
2017: PloS One
https://www.readbyqxmd.com/read/28928659/brain-pharmacokinetics-and-the-pharmacological-effects-on-striatal-neurotransmitter-levels-of-pueraria-lobata-isoflavonoids-in-rat
#14
Bingxin Xiao, Zengxian Sun, Fangrui Cao, Lisha Wang, Yonghong Liao, Xinmin Liu, Ruile Pan, Qi Chang
Isoflavonoids are putatively active components of Pueraria lobata and has been demonstrated prominent neuro-protection effect against cerebrovascular disorders, hypertension or Parkinson's disease (PD). However, the molecular basis for the beneficial effect of Pueraria lobata on nervous systems has not been well revealed. The present study aims to assess striatum exposure to main active isoflavonoids and changes of striatal extracellular neurotransmitters levels in rat brain after intravenous administration of Pueraria lobata isoflavonoids extracts (PLF), to further elucidate its' substantial bases for neuro activities...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28927382/a-rapid-seamless-method-for-gene-knockout-in-pseudomonas-aeruginosa
#15
Weiliang Huang, Angela Wilks
BACKGROUND: Pseudomonas aeruginosa is a model organism for the study of quorum sensing, biofilm formation, and also leading cause of nosocomial infections in immune compromised patients. As such P. aeruginosa is one of the most well studied organisms in terms of its genetics. However, the construction of gene deletions and replacements in Pseudomonas aeruginosa is relatively time-consuming, requiring multiple steps including suicide vector construction, conjugation, inactivation with insertion of antibiotic resistance cassettes and allelic exchange...
September 19, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28892969/fistulating-richter-s-hernia-of-groin-with-necrotizing-soft-tissue-infection-a-lethal-combination
#16
Shibojit Talukder, Ashish Gupta, Basant Narayan Singh, Lileswar Kaman, P Abhinaya Reddy
Strangulation of groin hernia can result in significant morbidity and mortality. Spontaneous external fistulation following strangulation is rare and typically occurs with Richter's hernia. Spreading Necrotizing Soft Tissue Infection (NSTI) secondary to Enterocutaneous Fistula (ECF) is an ominous sign, further worsening its prognosis. Early diagnosis and prompt surgical treatment is crucial to improve outcome. Herewith the authors are presenting a case of neglected inguinal hernia. It was complicated with ECF formation and rapidly spreading NSTI of flank...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28877045/advances-in-the-treatment-of-gastric-cancer
#17
David H Ilson
PURPOSE OF REVIEW: To review recent studies in esophagogastric cancer. RECENT FINDINGS: Positive emission tomography (PET) scan in follow-up after curative treatment of esophagogastric cancer did not lead to improved survival. In the preoperative treatment of esophagogastric cancer, the addition of the antivascular endothelial growth factor agent bevacizumab to perioperative chemotherapy with combination epirubicin, cisplatinum, and 5-fluorouracil (5-FU; ECF) failed to improve survival compared with chemotherapy alone...
November 2017: Current Opinion in Gastroenterology
https://www.readbyqxmd.com/read/28876571/duodenectomy-managing-the-fistula
#18
M Govender, O Matsevych, F Ghoor, N Singh, C Molenaar
BACKGROUND: Duodenectomy is rarely indicated, however, in certain circumstances may have be performed. Enterocutaneous fistula (ECF) is the main cause of serious adverse outcomes. Its management remains challenging. METHOD: Two cases of emergency duodenectomy are presented. The management of ECF is described and discussed. RESULTS: Case 1: A 22-year-old male presented in septic shock with perforated duodenal ulcer, suffered two cardiac arrests before index surgery...
September 2017: South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
https://www.readbyqxmd.com/read/28846903/riverine-inputs-and-source-tracing-of-perfluoroalkyl-substances-pfass-in-taihu-lake-china
#19
Xinxin Ma, Guoqiang Shan, Meng Chen, Jinyu Zhao, Lingyan Zhu
The occurrence, riverine inputs and sources of perfluoroalkyl substances (PFASs) in Taihu Lake, one of the largest lakes in China, were investigated by measuring PFASs including the isomers of perfluorooctanesulfonate (PFOS), perfluorooctanoate (PFOA) and perfluorohexanesulfonate (PFHxS) in the Lake and its main flow-in rivers. It was found that PFHxS, instead of PFOS or PFOA, was predominant both in the Lake and rivers (45.9-351ng/L), reflecting increasing demand of PFHxS in recent years. The riverine flux of PFASs into the Lake was estimated to be 1255kg/year...
August 25, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28814497/extracellular-acid-base-balance-and-ion-transport-between-body-fluid-compartments
#20
REVIEW
Julian L Seifter, Hsin-Yun Chang
Clinical assessment of acid-base disorders depends on measurements made in the blood, part of the extracellular compartment. Yet much of the metabolic importance of these disorders concerns intracellular events. Intracellular and interstitial compartment acid-base balance is complex and heterogeneous. This review considers the determinants of the extracellular fluid pH related to the ion transport processes at the interface of cells and the interstitial fluid, and between epithelial cells lining the transcellular contents of the gastrointestinal and urinary tracts that open to the external environment...
September 2017: Physiology
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