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https://www.readbyqxmd.com/read/28109177/glutamine-synthetase-stabilizes-the-binding-of-glnr-to-nitrogen-fixation-gene-operators
#1
Gabriela de Carvalho Fernandes, Ksenia Hauf, Fernando Hayashi Sant'Anna, Karl Forchhammer, Luciane Maria Pereira Passaglia
Biological nitrogen fixation (BNF) is a high energy demanding process carried out by diazotrophic microorganisms that supply combined nitrogen to the biosphere. The genes related to BNF are strictly regulated, but these mechanisms are poorly understood in Gram-positive bacteria. The transcription factor GlnR was proposed to regulate nitrogen fixation related genes based on Paenibacillus comparative genomics. In order to validate this proposal, we investigated BNF regulatory sequences in Paenibacillus riograndensis SBR5(T) genome...
January 21, 2017: FEBS Journal
https://www.readbyqxmd.com/read/28109108/-brachiocephalic-artery-sparing-aortic-arch-repair-combined-with-stent-graft-elephant-trunk-technique-for-stanford-type-a-aortic-dissection-analysis-of-23-cases
#2
Song-Lin DU, Jun Wan, Wu-Jun Wang, Kai-Can Cai, Ya-Xiang Liu, Xiang-Hui Mao
OBJECTIVE: To assess the clinical outcomes of brachiocephalic artery-sparing aortic arch repair combined with stent-graft elephant trunk technique for treatment of Stanford type A aortic dissection. METHODS: Twenty-three patients with Stanford type A aortic dissection requiring arch replacement underwent brachiocephalic artery-sparing aortic arch repair combined with stent-graft elephant trunk technique. The operations were performed within 72 h (20 cases) or 3-14 days (3 cases) after the onset of aortic dissection...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109104/-clinical-significance-of-peripheral-blood-neutrophil-lymphocyte-ratio-and-platelet-lymphocyte-ratio-in-patients-with-asthma
#3
Guang Shi, Jun-Wei Zhao, Liang Ming
OBJECTIVE: To investigate the changes of peripheral blood neutrophil-lymphocyte ratio (NLR) and platelet- lymphocyte ratio (PLR) in patients in acute stage of bronchial asthma and their clinical significance. METHODS: A total of 262 patients with acute asthma, including 97 critical and 175 non-critical patients, were recruited from our hospital between January, 2013 and May, 2016, with 130 healthy individuals as the control group. The absolute neutrophil count, absolute lymphocyte count, platelet, NLR and PLR were compared among different groups, and their diagnostic values were evaluated using the area under the receiver-operating characteristic (ROC) curve...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109092/-early-outcomes-of-elective-surgery-for-colon-cancer-with-preoperative-mechanical-bowel-preparation-a-randomized-clinical-trial
#4
Yan-Jie Hu, Ka Li, Li Li, Xiao-Dong Wang, Jie Yang, Jin-Hua Feng, Wei Zhang, Yu-Wei Liu
OBJECTIVE: To compared the early outcomes of patients undergoing elective surgeries for colon cancer with and without preoperative mechanical bowel preparation. METHODS: Between July, 2014 and February, 2016, patients undergoing elective surgery for colon cancer with primary anastomosis were randomly assigned into control group with mechanical bowel preparation 12 h before surgery and treatment group without mechanical bowel preparation. Baseline data collection was completed within 12 h after the operation...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28109090/-three-dimensional-versus-two-dimensional-imaging-systems-in-laparoscopic-radical-prostatectomy-for-prostate-cancer-a-retrospective-cohort-study
#5
Kai-Qiang Tang, Shi-Yu Pang, Ji-Ming Bao, Cheng-Yong Lei, Wan-Long Tan
OBJECTIVE: To compare the perioperative, functional and oncologic outcomes of patients with prostate cancer receiving laparoscopic radical prostatectomy (LRP) using three-dimensional (3D) versus two-dimensional (2D) imaging systems. METHODS: From February, 2014 to January 2016, 72 consecutive patients with clinically localized prostate cancer underwent LRP with 2D or 3D imaging systems performed by a single experienced surgeon. The baseline characteristics, perioperative data, and functional and oncologic outcomes of the patients were collected and analyzed...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28108975/3d-printed-soft-tissue-physical-models-of-renal-malignancies-for-individualized-surgical-simulation-a-feasibility-study
#6
Michael M Maddox, Allison Feibus, James Liu, Julie Wang, Raju Thomas, Jonathan L Silberstein
To construct patient-specific physical three-dimensional (3D) models of renal units with materials that approximates the properties of renal tissue to allow pre-operative and robotic training surgical simulation, 3D physical kidney models were created (3DSystems, Rock Hill, SC) using computerized tomography to segment structures of interest (parenchyma, vasculature, collection system, and tumor). Images were converted to a 3D surface mesh file for fabrication using a multi-jet 3D printer. A novel construction technique was employed to approximate normal renal tissue texture, printers selectively deposited photopolymer material forming the outer shell of the kidney, and subsequently, an agarose gel solution was injected into the inner cavity recreating the spongier renal parenchyma...
January 20, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28108825/photodynamic-therapy-for-the-treatment-of-complex-anal-fistula
#7
A Arroyo, P Moya, M A Rodríguez-Prieto, M J Alcaide, M M Aguilar, M Bellón, M T Pérez-Vázquez, F Candela, R Calpena
BACKGROUND: Photodynamic therapy (PDT) is a new procedure for the treatment of anal fistula. This preliminary study was designed to investigate the safety and effectiveness of this new technique in the treatment of anal fistula. METHODS: Ten patients were treated with PDT. Intralesional 5-aminolevulinic acid (ALA) 2% was directly injected into the fistula. The internal and external orifices were closed. After an incubation period of 2 h, the fistula was irradiated using an optical fibre connected to a red laser (MULTIDIODE 630 PDT, INTERmedic, Spain) operating at 1 W/cm for 3 min (180 Joules)...
January 20, 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28108817/computerized-classification-of-pneumoconiosis-on-digital-chest-radiography-artificial-neural-network-with-three-stages
#8
Eiichiro Okumura, Ikuo Kawashita, Takayuki Ishida
It is difficult for radiologists to classify pneumoconiosis from category 0 to category 3 on chest radiographs. Therefore, we have developed a computer-aided diagnosis (CAD) system based on a three-stage artificial neural network (ANN) method for classification based on four texture features. The image database consists of 36 chest radiographs classified as category 0 to category 3. Regions of interest (ROIs) with a matrix size of 32 × 32 were selected from chest radiographs. We obtained a gray-level histogram, histogram of gray-level difference, gray-level run-length matrix (GLRLM) feature image, and gray-level co-occurrence matrix (GLCOM) feature image in each ROI...
January 20, 2017: Journal of Digital Imaging: the Official Journal of the Society for Computer Applications in Radiology
https://www.readbyqxmd.com/read/28108802/opportunistic-screening-for-osteoporosis-by-routine-ct-in-southern-europe
#9
Elena Alacreu, David Moratal, Estanislao Arana
: Feasibility evaluation of early detection of osteoporosis in oncologic patients by bone mineral density (BMD) on abdominal computed tomography (CT) scans performed for other clinical indications, by using dual-energy X-ray absorptiometry (DXA) as reference. Abdominal CT images can identify patients with osteoporosis BMD without additional radiation exposure or cost. INTRODUCTION: The purpose of the study is to evaluate the feasibility of early detection of osteoporosis by bone mineral density (BMD) on abdominal computed tomography (CT) scans performed in oncologic patients, comparing calibrated and uncalibrated measurements by using dual-energy X-ray absorptiometry (DXA) as reference...
January 20, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28108784/prolonged-urinary-retention-can-and-does-occur-after-any-type-of-ureteral-reimplantantion
#10
Martin A Koyle, Hissan Butt, Armando Lorenzo, Gerald C Mingin, Jack S Elder, Grahame H H Smith
OBJECTIVE: Transient urinary retention has been recognized as a complication of bilateral ureteroneocystostomy (UNC), when performed extravesically. The objective of this study was to review a collective surgeons' experiences of unilateral extra- and unilateral and/or bilateral intra-vesical ureteral reimplanation, where urinary retention greater than 6 weeks, or what we have termed, "prolonged urinary retention" (PUR), occurred. MATERIALS AND METHODS: We retrospectively reviewed charts to identify PUR after any open or robotic reimplant, other than bilateral extravesical, between 1998 and 2015 as reported by five surgeons...
January 20, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28108759/from-microhabitat-of-floral-nectar-up-to-biogeographic-scale-novel-insights-on-neutral-and-niche-bacterial-assemblies
#11
Yana Aizenberg-Gershtein, Ido Izhaki, Malka Halpern
Microbial model systems are very useful in addressing macro-ecological questions. Two major theories exist to date, to explain the community structure of organisms: (1) the dispersal (neutral) assembly theory which predicts that community similarity decreases with increasing geographic distance, independent of any environmental variables, and (2) the niche assembly theory which predicts that the communities' compositions are more homogeneous among sites characterized by similar environmental conditions. Our study system offered a unique opportunity to investigate the relative role of environmental conditions and spatial factors in shaping community composition...
January 20, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28108683/improving-decannulation-and-swallowing-function-a-comprehensive-multidisciplinary-approach-to-post-tracheostomy-care
#12
EDITORIAL
John W Mah, Ilene I Staff, Sylvia R Fisher, Karyn L Butler
BACKGROUND: Multidisciplinary tracheostomy teams have been successful in improving operative outcomes; however, limited data exist on their effect on postoperative care. We aimed to determine the effectiveness of a multidisciplinary tracheostomy service alone and following implementation of a post-tracheostomy care bundle on rates of decannulation and tolerance of oral diet before discharge. METHODS: Prospective data on all subjects requiring tracheostomy by any trauma/critical care surgeon were collected from January 2011 to December 2013 following development of a tracheostomy service and continued following implementation of the post-tracheostomy care bundle...
February 2017: Respiratory Care
https://www.readbyqxmd.com/read/28108673/plasma-microrna-21-expression-an-indicator-for-the-severity-of-type-2-diabetes-with-diabetic-retinopathy
#13
Qi Jiang, Xue-Man Lv, Yi Yuan, Ling Wang
OBJECTIVE: To investigate the roles of plasma microRNA-21 (miR-21) in the pathogenic process of type 2 diabetes (T2D) with diabetic retinopathy (DR). METHODS: T2D patients included patients without DR (NDR group), patients with non-proliferative/background DR (BDR group) and patients with proliferative DR (PDR group). Healthy individuals served as control group. Fasting plasma glucose (FPG), glycosylated hemoglobin (HbA1c), triglycerides (TG), total cholesterol (TC), urine creatinine (Cr), fasting blood glucose (FBG), blood urea nitrogen (BUN), low-density cholesterol (LDL-C), fasting insulin (FINS) and plasma miR-21 expression were measured...
January 20, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28108575/uniportal-thoracoscopic-decortication-for-pleural-empyema-and-the-role-of-ultrasonographic-preoperative-staging%C3%A2
#14
Stefano Bongiolatti, Luca Voltolini, Sara Borgianni, Roberto Borrelli, Giorgia Tancredi, Domenico Viggiano, Alessandro Gonfiotti
OBJECTIVES: The surgical approach to chronic pleural empyema is still controversial. Video-assisted thoracic surgery (VATS) debridement and decortication has shown favourable outcomes, while the uniportal VATS (U-VATS) approach is still anecdotal. We report our experience with ultrasonographic (US) preoperative staging followed by U-VATS decortication for pleural empyema. METHODS: We performed a retrospective analysis of patients who underwent surgical treatment of stage II and stage III pleural empyema from 2012 to 2015...
January 19, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28108567/role-of-the-frozen-elephant-trunk-procedure-for-chronic-aortic-dissection
#15
Eric E Roselli, Faisal G Bakaeen, Douglas R Johnston, Edward G Soltesz, Michael Z Tong
OBJECTIVES: Considering the chronic and progressive nature of aortic dissection, operative planning must anticipate the need for later interventions. We have increasingly used a modified version of the frozen elephant trunk repair operation to treat these patients. We review the indications, considerations for planning, and important operative details for performing frozen elephant trunk repair for chronic aortic dissection. METHODS: Frozen elephant trunk repair is performed using selective antegrade brain perfusion, direct placement of commercially available stent grafts with suture fixation in the aortic arch, and proximal aortic replacement...
January 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28108563/patient-management-in-aortic-arch-surgery%C3%A2
#16
REVIEW
Sven Peterss, Maximilian Pichlmaier, Alexander Curtis, Maximilian Luehr, Frank Born, Christian Hagl
SummaryAortic arch surgery requires complex patient management beyond the manual replacement of the diseased vessel. These procedures include (i) a thorough and pathologically adjusted preoperative evaluation, (ii) initiation and control of cardiopulmonary bypass, (iii) cerebral protection strategies and (iv) techniques to protect the abdominal end organs during prolonged operations. Due to the complexity of aortic arch procedures, multimodal real-time surveillance is required during all stages of the operation...
January 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28108546/automatic-health-record-review-to-help-prioritize-gravely-ill-social-security-disability-applicants
#17
Kenneth Abbott, Yen-Yi Ho, Jennifer Erickson
OBJECTIVE: Every year, thousands of patients die waiting for disability benefits from the Social Security Administration. Some qualify for expedited service under the Compassionate Allowance (CAL) initiative, but CAL software focuses exclusively on information from a single form field. This paper describes the development of a supplemental process for identifying some overlooked but gravely ill applicants, through automatic annotation of health records accompanying new claims. We explore improved prioritization instead of fully autonomous claims approval...
January 20, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28108494/the-rich-club-organization-in-rat-functional-brain-network-to-balance-between-communication-cost-and-efficiency
#18
Xia Liang, Li-Ming Hsu, Hanbing Lu, Akira Sumiyoshi, Yong He, Yihong Yang
Network analyses of structural connectivity in the brain have highlighted a set of highly connected hubs that are densely interconnected, forming a "rich-club" substrate in diverse species. Here, we demonstrate the existence of rich-club organization in functional brain networks of rats. Densely interconnected rich-club regions are found to be distributed in multiple brain modules, with the majority located within the putative default mode network. Rich-club members exhibit high wiring cost (as measured by connection distance) and high metabolic running cost (as surrogated by cerebral blood flow), which may have evolved to achieve high network communications to support efficient brain functions...
January 19, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28108450/netland-quantitative-modeling-and-visualization-of-waddington-s-epigenetic-landscape-using-probabilistic-potential
#19
Jing Guo, Feng Lin, Xiaomeng Zhang, Vivek Tanavde, Jie Zheng
: Waddington's epigenetic landscape is a powerful metaphor for cellular dynamics driven by gene regulatory networks. Its quantitative modeling and visualization, however, remains a challenge, especially when there are more than two genes in the network. A software tool for Waddington's landscape has not been available in the literature. We present NetLand, an open-source software tool for modeling and simulating the kinetic dynamics of gene regulatory networks (GRNs), and visualizing the corresponding Waddington's epigenetic landscape in three dimensions without restriction on the number of genes in a GRN...
January 19, 2017: Bioinformatics
https://www.readbyqxmd.com/read/28108427/treatment-of-non-functional-pituitary-adenoma-post-operative-remnants-adjuvant-or-delayed-gamma-knife-radiosurgery
#20
Z H A Sadik, E H J Voormolen, P R A M Depauw, B Burhani, W A Nieuwlaat, J Verheul, S Leenstra, R Fleischeuer, P E J Hanssens
OBJECTIVE: It is still not clear whether Gamma knife Radiosurgery (GKRS) for non-functional pituitary adenomas (NFPA) should be used as a standard adjuvant postoperative therapy or applied when there is documented progression of the remnant on the follow-up (FU) MRI. METHODS: We performed a retrospective study of patients with non-functional pituitary adenomas who underwent primary surgery and GKRS between 2002 and 2015. Patients were divided into two groups based on the GKRS indication: adjuvant treatment (GKRS ≤6 months postoperatively) or delayed treatment (GKRS if documented progression occurred on the FU MRI)...
January 17, 2017: World Neurosurgery
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