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https://www.readbyqxmd.com/read/28210821/p-f-c-sigma-%C3%A2-cruciate-retaining-fixed-bearing-versus-mobile-bearing-knee-arthroplasty-a-prospective-comparative-study-with-minimum-10-year-follow-up
#1
O Riaz, A Aqil, G Sisodia, G Chakrabarty
AIMS: To prospectively compare long-term clinical and radiological outcomes following a cruciate retaining fixed-bearing (FB) and a mobile-bearing (MB) primary total knee replacement (TKR). METHODS: We prospectively reviewed 113 TKRs in 99 patients (14 bilateral) with a PFC sigma cruciate retaining rotating platform system, at an average follow-up of 11.1 years (range 10-12). Results were contrasted with those from 89 TKRs in 72 patients (17 bilateral) with a PFC sigma cruciate fixed-bearing prosthesis, at an average follow-up of 12...
February 16, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28210787/articular-surface-mounted-navigated-total-knee-arthroplasty-improves-the-reliability-of-component-alignment
#2
N D Clement, D MacDonald, A G Burgess, C R Howie
PURPOSE: The primary aim was to compare the early knee-specific functional outcome after articular surface mounted (ASM) navigation with non-navigated TKA. The secondary aims were to compare general physical and mental health improvement, patient satisfaction, and reliability of component alignment in the sagittal and coronal planes between ASM navigated TKA with that of non-navigated TKA. METHODS: Prospective functional outcome and radiographic data were collect for 123 patients undergoing ASM navigation and 172 patients undergoing non-navigated TKA by a high volume single surgeon...
February 16, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28210250/simultaneous-activation-of-iron-and-thiol-based-sensor-regulator-systems-by-redox-active-compounds
#3
Kang-Lok Lee, Ji-Sun Yoo, Gyeong-Seok Oh, Atul K Singh, Jung-Hye Roe
Bacteria in natural habitats are exposed to myriad redox-active compounds (RACs), which include producers of reactive oxygen species (ROS) and reactive electrophile species (RES) that alkylate or oxidize thiols. RACs can induce oxidative stress in cells and activate response pathways by modulating the activity of sensitive regulators. However, the effect of a certain compound on the cell has been investigated primarily with respect to a specific regulatory pathway. Since a single compound can exert multiple chemical effects in the cell, its effect can be better understood by time-course monitoring of multiple sensitive regulatory pathways that the compound induces...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28205271/lean-six-sigma-methodologies-improve-clinical-laboratory-efficiency-and-reduce-turnaround-times
#4
Tamer C Inal, Ozlem Goruroglu Ozturk, Filiz Kibar, Salih Cetiner, Selcuk Matyar, Gulcin Daglioglu, Akgun Yaman
BACKGROUND: Organizing work flow is a major task of laboratory management. Recently, clinical laboratories have started to adopt methodologies such as Lean Six Sigma and some successful implementations have been reported. This study used Lean Six Sigma to simplify the laboratory work process and decrease the turnaround time by eliminating non-value-adding steps. METHODS: The five-stage Six Sigma system known as define, measure, analyze, improve, and control (DMAIC) is used to identify and solve problems...
February 15, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28199333/comparative-and-functional-triatomine-genomics-reveals-reductions-and-expansions-in-insecticide-resistance-related-gene-families
#5
Lucila Traverso, Andrés Lavore, Ivana Sierra, Victorio Palacio, Jesús Martinez-Barnetche, José Manuel Latorre-Estivalis, Gaston Mougabure-Cueto, Flavio Francini, Marcelo G Lorenzo, Mario Henry Rodríguez, Sheila Ons, Rolando V Rivera-Pomar
BACKGROUND: Triatomine insects are vectors of Trypanosoma cruzi, a protozoan parasite that is the causative agent of Chagas' disease. This is a neglected disease affecting approximately 8 million people in Latin America. The existence of diverse pyrethroid resistant populations of at least two species demonstrates the potential of triatomines to develop high levels of insecticide resistance. Therefore, the incorporation of strategies for resistance management is a main concern for vector control programs...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28198347/natural-escherichia-coli-isolates-rapidly-acquire-genetic-changes-upon-laboratory-domestication
#6
Bin Liu, Gustavo Eydallin, Ram P Maharjan, Lu Feng, Lei Wang, Thomas Ferenci
The adaptation of environmental bacteria to laboratory conditions was analysed through the exploration of genomic changes in four strains of Escherichia coli freshly isolated from their natural habitats and belonging to different taxonomic clusters. Up to 25 mutations were present in all cultures of natural isolates within 10 days of transfer in rich media or with a single growth cycle involving an extended stationary phase. Among numerous individual mutations, two genes were affected in parallel in distinct backgrounds...
January 2017: Microbiology
https://www.readbyqxmd.com/read/28198346/characterization-of-two-new-putative-adhesins-of-leptospira-interrogans
#7
Jupciana M Figueredo, Gabriela H Siqueira, Gisele O de Souza, Marcos B Heinemann, Silvio A Vasconcellos, Erica G B Chapola, Ana L T O Nascimento
We here report the characterization of two novel proteins encoded by the genes LIC11122 and LIC12287, identified in the genome sequences of Leptospira interrogans, annotated, respectively, as a putative sigma factor and a hypothetical protein. The CDSs LIC11122 and LIC12287 have signal peptide SPII and SPI and are predicted to be located mainly at the cytoplasmic membrane of the bacteria. The genes were cloned and the proteins expressed using Escherichia coli. Proteinase K digestion showed that both proteins are surface exposed...
January 2017: Microbiology
https://www.readbyqxmd.com/read/28198085/the-alternative-sigma-factor-%C3%AF-b-plays-a-crucial-role-in-adaptive-strategies-of-clostridium-difficile-during-gut-infection
#8
Nicolas Kint, Claire Janoir, Marc Monot, Sandra Hoys, Olga Soutourina, Bruno Dupuy, Isabelle Martin-Verstraete
Clostridium difficile is a major cause of diarrhoea associated with antibiotherapy. Exposed to stresses in the gut, C. difficile can survive by inducing protection, detoxification, and repair systems. In several firmicutes, most of these systems are controlled by the general stress response involving σ(B) . In this work, we studied the role of σ(B) in the physiopathology of C. difficile. We showed that the survival of the sigB mutant during the stationary phase was reduced. Using a transcriptome analysis, we showed that σ(B) controls the expression of ∼25% of genes including genes involved in sporulation, metabolism, cell surface biogenesis, and the management of stresses...
February 15, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28194137/sigma-factor-regulated-cellular-response-in-a-non-solvent-producing-clostridium-beijerinckii-degenerated-strain-a-comparative-transcriptome-analysis
#9
Yan Zhang, Shengyin Jiao, Jia Lv, Renjia Du, Xiaoni Yan, Caixia Wan, Ruijuan Zhang, Bei Han
Clostridium beijerinckii DG-8052, derived from NCIMB 8052, cannot produce solvent or form spores, a phenomenon known as degeneration. To explore the mechanisms of degeneration at the gene level, transcriptomic profiles of the wild-type 8052 and DG-8052 strains were compared. Expression of 5168 genes comprising 98.6% of the genome was assessed. Interestingly, 548 and 702 genes were significantly up-regulated in the acidogenesis and solventogenesis phases of DG-8052, respectively, and mainly responsible for the phosphotransferase system, sugar metabolic pathways, and chemotaxis; meanwhile, 699 and 797 genes were significantly down-regulated, respectively, and mainly responsible for sporulation, oxidoreduction, and solventogenesis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28191904/n-terminomics-identifies-prli42-as-a-membrane-miniprotein-conserved-in-firmicutes-and-critical-for-stressosome-activation-in-listeria-monocytogenes
#10
Francis Impens, Nathalie Rolhion, Lilliana Radoshevich, Christophe Bécavin, Mélodie Duval, Jeffrey Mellin, Francisco García Del Portillo, M Graciela Pucciarelli, Allison H Williams, Pascale Cossart
To adapt to changing environments, bacteria have evolved numerous pathways that activate stress response genes. In Gram-positive bacteria, the stressosome, a cytoplasmic complex, relays external cues and activates the sigma B regulon. The stressosome is structurally well-characterized in Bacillus, but how it senses stress remains elusive. Here, we report a genome-wide N-terminomic approach in Listeria that strikingly led to the discovery of 19 internal translation initiation sites and 6 miniproteins, among which one, Prli42, is conserved in Firmicutes...
February 13, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28190561/correlation-between-the-high-frequency-content-of-the-qrs-on-murine-surface-electrocardiogram-and-the-sympathetic-nerves-density-in-left-ventricle-after-myocardial-infarction-experimental-study
#11
Golriz Sedaghat, Ryan T Gardner, Muammar M Kabir, Elyar Ghafoori, Beth A Habecker, Larisa G Tereshchenko
Denervated post-infarct scar is arrhythmogenic. Our aim was to compare QRS frequency content in denervated and innervated left ventricular (LV) scar. In-vivo single lead ECG telemetry device was implanted in 17 heterozygous PTPσ (HET) and 7 lacking PTPσ (KO) transgenic mice. Myocardial infarction (MI) with reperfusion and sham surgery was performed. HET mice developed a denervated scar, whereas KO mice developed innervated scar. The power spectral density was used to assess the QRS frequency content. Denervated as compared to innervated post-MI scar was characterized by the higher relative contribution of 300-500Hz (14±1 vs...
February 3, 2017: Journal of Electrocardiology
https://www.readbyqxmd.com/read/28188803/activation-of-the-sigma-1-receptor-by-haloperidol-metabolites-facilitates-brain-derived-neurotrophic-factor-secretion-from-human-astroglia
#12
Dhwanil A Dalwadi, Seongcheol Kim, John A Schetz
Glial cells play a critical role in neuronal support which includes the production and release of the neurotrophin brain-derived neurotrophic factor (BDNF). Activation of the sigma-1 receptor (S1R) has been shown to attenuate inflammatory stress-mediated brain injuries, and there is emerging evidence that this may involve a BDNF-dependent mechanism. In this report we studied S1R-mediated BDNF release from human astrocytic glial cells. Astrocytes express the S1R, which mediates BDNF release when stimulated with the prototypical S1R agonists 4-PPBP and (+)-SKF10047...
February 8, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28186787/strange-quark-magnetic-moment-of-the-nucleon-at-the-physical-point
#13
Raza Sabbir Sufian, Yi-Bo Yang, Andrei Alexandru, Terrence Draper, Jian Liang, Keh-Fei Liu
We report a lattice QCD calculation of the strange quark contribution to the nucleon's magnetic moment and charge radius. This analysis presents the first direct determination of strange electromagnetic form factors including at the physical pion mass. We perform a model-independent extraction of the strange magnetic moment and the strange charge radius from the electromagnetic form factors in the momentum transfer range of 0.051  GeV^{2}≲Q^{2}≲1.31  GeV^{2}. The finite lattice spacing and finite volume corrections are included in a global fit with 24 valence quark masses on four lattices with different lattice spacings, different volumes, and four sea quark masses including one at the physical pion mass...
January 27, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28183346/study-protocol-improving-the-transition-of-care-from-a-non-network-hospital-back-to-the-patient-s-medical-home
#14
Roman A Ayele, Emily Lawrence, Marina McCreight, Kelty Fehling, Jamie Peterson, Russell E Glasgow, Borsika A Rabin, Robert Burke, Catherine Battaglia
BACKGROUND: The process of transitioning Veterans to primary care following a non-Veterans Affairs (VA) hospitalization can be challenging. Poor transitions result in medical complications and increased hospital readmissions. The goal of this transition of care quality improvement (QI) project is to identify gaps in the current transition process and implement an intervention that bridges the gap and improves the current transition of care process within the Eastern Colorado Health Care System (ECHCS)...
February 10, 2017: BMC Health Services Research
https://www.readbyqxmd.com/read/28182577/expressing-analytical-performance-from-multi-sample-evaluation-in-laboratory-eqa
#15
Marc H M Thelen, Rob T P Jansen, Cas W Weykamp, Herman Steigstra, Ron Meijer, Christa M Cobbaert
BACKGROUND: To provide its participants with an external quality assessment system (EQAS) that can be used to check trueness, the Dutch EQAS organizer, Organization for Quality Assessment of Laboratory Diagnostics (SKML), has innovated its general chemistry scheme over the last decade by introducing fresh frozen commutable samples whose values were assigned by Joint Committee for Traceability in Laboratory Medicine (JCTLM)-listed reference laboratories using reference methods where possible...
February 9, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28176045/molecular-probes-for-imaging-the-sigma-2-receptor-in-vitro-and-in-vivo-imaging-studies
#16
Chenbo Zeng, Elizabeth S McDonald, Robert H Mach
The sigma-2 (σ2) receptor has been validated as a biomarker of the proliferative status of solid tumors. Therefore, radiotracers having a high affinity and high selectivity for σ2 receptors have the potential to assess the proliferative status of human tumors using noninvasive imaging techniques such as Positron Emission Tomography (PET). Since the σ2 receptor has not been cloned, the current knowledge of this receptor has relied on receptor binding studies with the radiolabeled probes and investigation of the effects of the σ2 receptor ligands on tumor cells...
February 8, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/28172705/dop088-somatic-and-visceral-hypersensitivity-associated-to-acute-intestinal-inflammation-are-absent-in-sigma-1-receptor-knockout-mice
#17
S Lόpez-Estévez, G Gris, B de la Puente, X Codony, M Merlos, V Martínez
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28172547/p033-dss-induced-colitis-is-attenuated-in-sigma-1-receptor-knockout-mice
#18
S Lόpez-Estévez, M Aguilera, G Gris, B de la Puente, X Codony, D Zamanillo, V Martínez
No abstract text is available yet for this article.
February 1, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28171531/pro54db-a-database-for-experimentally-verified-sigma-54-promoters
#19
Zhi-Yong Liang, Hong-Yan Lai, Huan Yang, Chang-Jian Zhang, Hui Yang, Huan-Huan Wei, Xin-Xin Chen, Ya-Wei Zhao, Zhen-Dong Su, Wen-Chao Li, En-Ze Deng, Hua Tang, Wei Chen, Hao Lin
No abstract text is available yet for this article.
February 1, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28167521/ddar-pa1196-regulates-expression-of-dimethylarginine-dimethylaminohydrolase-for-the-metabolism-of-methylarginines-in-pseudomonas-aeruginosa-pao1
#20
Benjamin R Lundgren, Frank J Bailey, Gabriella Moley, Christopher T Nomura
: Dimethylarginine dimethylaminohydrolases or DDAHs catalyze the hydrolysis of methylarginines to yield L-citrulline and methylamines as products. DDAHs and their central roles in methylarginine metabolism have been characterized for eukaryotic cells. While DDAHs are known to exist in some bacteria, including Streptomyces coelicolor and Pseudomonas aeruginosa, the physiological importance and genetic regulation of bacterial DDAHs remain poorly understood. To provide some insight into bacterial methylarginine metabolism, this study focused on identifying the key elements or factors regulating DDAH expression in P...
February 6, 2017: Journal of Bacteriology
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