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https://www.readbyqxmd.com/read/27898393/a-noncanonical-auxin-sensing-mechanism-is-required-for-organ-morphogenesis-in-arabidopsis
#1
Sara Simonini, Joyita Deb, Laila Moubayidin, Pauline Stephenson, Manoj Valluru, Alejandra Freire-Rios, Karim Sorefan, Dolf Weijers, Jiří Friml, Lars Østergaard
Tissue patterning in multicellular organisms is the output of precise spatio-temporal regulation of gene expression coupled with changes in hormone dynamics. In plants, the hormone auxin regulates growth and development at every stage of a plant's life cycle. Auxin signaling occurs through binding of the auxin molecule to a TIR1/AFB F-box ubiquitin ligase, allowing interaction with Aux/IAA transcriptional repressor proteins. These are subsequently ubiquitinated and degraded via the 26S proteasome, leading to derepression of auxin response factors (ARFs)...
October 15, 2016: Genes & Development
https://www.readbyqxmd.com/read/27896329/myasthenia-gravis-with-acute-respiratory-failure-in-the-emergency-department
#2
Hasan Huseyin Kozak, Ali Ulvi Uca, Turgut Teke, Mustafa Altas, Emine Karatas
Acute respiratory failure (ARF) is defined as a sudden malfunction in the ability of respiratory system to maintain adequate gas exchange. Acute hypercapnic respiratory failure develops as a result of ventilation deficiency and it is defined as an increase of PaCO2 above 45 mmHg. Myasthenia Gravis (MG) is a sporadically developing auto-immune deficiency where the neuro-muscular transmission is affected and it is one of the important reasons for neurologically-induced respiratory distress. Here, we report a case of a 75-year-old male patient previously undiagnosed MG, who presented with ARF...
June 2016: Turkish Journal of Emergency Medicine
https://www.readbyqxmd.com/read/27894507/do-simple-beside-lung-function-tests-predict-morbidity-after-rib-fractures
#3
Christopher A Butts, John J Brady, Sara Wilhelm, Laura Castor, Alicia Sherwood, Abby McCall, John Patch, Pamela Jones, Vicente Cortes, Adrian W Ong
BACKGROUND: We evaluated if incentive spirometry volume (ISV) and peak expiratory flow rate (PEFR) could predict acute respiratory failure (ARF) in patients with rib fractures. METHODS: Normotensive, co-operative patients were enrolled prospectively. ISV and PEFR were measured on admission, at 24 h and at 48 h by taking the best of three readings each time. The primary outcome, ARF, was defined as requiring invasive or noninvasive positive pressure ventilation...
November 19, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/27888589/combination-anti-apoptotic-effect-of-erythropoietin-and-melatonin-on-ischemia-reperfusion-induced-renal-injury-in-rats
#4
Shokofeh Banaei, Nasser Ahmadiasl, Alireza Alihemmati
Renal ischemia-reperfusion (IR) contributes to the development of acute renal failure (ARF). Oxygen free radicals are considered to be principal components involved in the pathophysiological tissue alterations observed during renal IR. The purpose of this study was to investigate the combination effect of melatonin (MEL) and erythropoietin (EPO), which are a potent antioxidant and anti-apoptotic agents, in IR-induced renal injury in rats. Wistar Albino rats were unilaterally nephrectomized and subjected to 45 min of renal pedicle occlusion followed by 24 h reperfusion...
October 2016: Acta Medica Iranica
https://www.readbyqxmd.com/read/27888102/the-phosphatidyl-inositol-3-kinase-pathway-does-not-suppress-activation-of-the-arf-and-bim-genes-by-deregulated-e2f1-activity
#5
Kenta Kurayoshi, Junko Okuno, Eiko Ozono, Ritsuko Iwanaga, Andrew P Bradford, Kazuyuki Kugawa, Keigo Araki, Kiyoshi Ohtani
The transcription factor E2F plays crucial roles in tumor suppression by activating pro-apoptotic genes such as the tumor suppressor ARF. The regulation of the ARF gene is distinct from that of growth-related E2F targets, in that it is specifically activated by deregulated E2F activity, induced by over-expression of E2F or forced inactivation of pRB, but not by physiological E2F activity induced by growth stimulation. The phosphatidyl inositol 3 kinase (PI3K) pathway was reported to suppress expression of some atypical pro-apoptotic genes by over-expressed E2F1...
November 22, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27884981/tissue-damage-and-senescence-provide-critical-signals-for-cellular-reprogramming-in-vivo
#6
Lluc Mosteiro, Cristina Pantoja, Noelia Alcazar, Rosa M Marión, Dafni Chondronasiou, Miguel Rovira, Pablo J Fernandez-Marcos, Maribel Muñoz-Martin, Carmen Blanco-Aparicio, Joaquin Pastor, Gonzalo Gómez-López, Alba De Martino, Maria A Blasco, María Abad, Manuel Serrano
Reprogramming of differentiated cells into pluripotent cells can occur in vivo, but the mechanisms involved remain to be elucidated. Senescence is a cellular response to damage, characterized by abundant production of cytokines and other secreted factors that, together with the recruitment of inflammatory cells, result in tissue remodeling. Here, we show that in vivo expression of the reprogramming factors OCT4, SOX2, KLF4, and cMYC (OSKM) in mice leads to senescence and reprogramming, both coexisting in close proximity...
November 25, 2016: Science
https://www.readbyqxmd.com/read/27874962/analysis-of-risk-factors-of-type-a-aortic-dissection-taad-operation-of-frozen-elephant-trunk-and-total-arch-replacement
#7
W Shang, M Ma, Y-P Ge, N Liu, J-M Zhu, L-Z Sun
OBJECTIVE:  To investigate the incidence and risk factors of acute renal failure (ARF) after operation of frozen elephant trunk and total arch replacement for acute thoracic aortic aneurysm and dissection (TAAD) with mild hypothermic circulatory arrest (MHCA), and to analyze the long-term survival rate of the patients with ARF. PATIENTS AND METHODS: From February 2009 to March 2015, patients with acute TAAD accepted operation of frozen elephant trunk and total arch replacement were enrolled...
November 2016: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/27870695/validity-and-reliability-of-a-submaximal-intermittent-running-test-in-elite-australian-football-players
#8
Kristopher R Veugelers, Geraldine A Naughton, Craig S Duncan, Darren J Burgess, Stuart R Graham
Veugelers, KR, Naughton, GA, Duncan, CS, Burgess, DJ, and Graham, SR. Validity and reliability of a submaximal intermittent running test in elite Australian football players. J Strength Cond Res 30(12): 3347-3353, 2016-The aim of this article was to determine the validity and reliability of a submaximal intermittent running (SIR) test in elite Australian rules football (ARF) players. Heart rate (HR) responses of 38 elite ARF players to both the SIR and the yo-yo intermittent recovery 2 (YYIR2) tests were compared over 2 trials...
December 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27869923/cross-sectional-study-on-case-fatality-rate-due-to-hantavirus-infection-in-goi%C3%A3-s-state-brazil-2007-2013
#9
Hélio Ranes de Menezes, Marcos Lázaro Moreli, Ana Luiza Lima Sousa, Vivaldo Gomes da Costa
OBJECTIVE: to describe the epidemiological and clinical profile of hantavirus infection and to analyze factors associated with case-fatality in Goiás, Brazil. METHODS: this was a cross-sectional study on case fatality due to hantavirus infection from 2007 to 2013 using data from the Notifiable Diseases Information System (SINAN) for Goiás State. Logistic regression analysis was performed to estimate odds ratios (OR) with 95% confidence intervals (95%CI). RESULTS: 1,171 suspected cases were reported, of which 73 (6...
July 2016: Epidemiologia e Servicos de Saude: Revista do Sistema Unico de Saude do Brasil
https://www.readbyqxmd.com/read/27864764/fret-flim-for-visualizing-and-quantifying-protein-interactions-in-live-plant-cells
#10
Alejandra Freire Rios, Tatyana Radoeva, Bert De Rybel, Dolf Weijers, Jan Willem Borst
Proteins are the workhorses that control most biological processes in living cells. Although proteins can accomplish their functions independently, the vast majority of functions require proteins to interact with other proteins or biomacromolecules. Protein interactions can be investigated through biochemical assays such as co-immunoprecipitation (co-IP) or Western blot analysis, but such assays lack spatial information. Here we describe a well-developed imaging method, Förster resonance energy transfer (FRET) analyzed by fluorescence lifetime imaging microscopy (FLIM), that can be used to visualize protein interactions with both spatial and temporal resolution in live cells...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27861153/epithelial-derived-matrix-metalloproteinase-mmp9-exhibits-a-novel-defensive-role-of-tumor-suppressor-in-colitis-associated-cancer-by-activating-mmp9-notch1-arf-p53-axis
#11
Lewins Walter, Adani Pujada, Noopur Bhatnagar, Agnieszka B Bialkowska, Vincent W Yang, Hamed Laroui, Pallavi Garg
Colitis associated cancer (CAC) is chronic inflammation driven colon cancer, prevalent among individuals with Inflammatory Bowel Disease. Matrix-metalloproteinase (MMP9) is one of the essential regulators of extra cellular matrix components. We have shown that MMP9 is protective in CAC contrary to its inflammatory role in acute-colitis. Aim of our study is to identify the mechanism of the protective role of epithelial derived-MMP9 in CAC. We used homozygous transgenic mice constitutively-expressing MMP9 in colonic-epithelium (TgM9) and wild-type (WT) littermates for in vivo experiments...
November 16, 2016: Oncotarget
https://www.readbyqxmd.com/read/27859255/modulation-of-multidrug-resistance-associated-proteins-function-in-erythrocytes-in-glycerol-induced-acute-renal-failure-rats
#12
Aoi Matsushima, Keisuke Oda, Nobuhiro Mori, Teruo Murakami
OBJECTIVES: Evaluation of the function of multidrug resistance-associated proteins (MRPs) expressed in erythrocytes and screening of endogenous MRPs modulator(s) in glycerol-induced acute renal failure (ARF) rats. METHODS: Concentrations of 2,4-dinitrophenyl-S-glutathione (DNP-SG), a substrate for MRPs, in erythrocytes after administration of 1-chloro-2,4-dintrobenzene (CDNB), a precursor of DNP-SG, were determined in control and ARF rats. The screening of endogenous MRPs modulator(s) was performed using washed erythrocytes and inside-out erythrocyte membrane vesicles (IOVs) in vitro...
November 18, 2016: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/27857914/continuous-renal-replacement-therapy-for-acute-renal-failure-in-patients-with-traumatic-brain-injury
#13
Chang-Yong Park, Hyun-Yong Choi, Nam-Kyu You, Tae Hoon Roh, Sook Jin Seo, Se-Hyuk Kim
OBJECTIVE: The purpose of this study was to investigate the impact of continuous renal replacement therapy (CRRT) on survival and relevant factors in patients who underwent CRRT after traumatic brain injury (TBI). METHODS: We retrospectively reviewed the laboratory, clinical, and radiological data of 29 patients who underwent CRRT among 1,190 TBI patients treated at our institution between April 2011 and June 2015. There were 20 men and 9 women, and the mean age was 60...
October 2016: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/27842751/noninvasive-ventilation
#14
REVIEW
Giuseppe Bello, Gennaro De Pascale, Massimo Antonelli
Noninvasive ventilation (NIV) has assumed a prominent role in the treatment of patients with both hypoxemic and hypercapnic acute respiratory failure (ARF). The main theoretic advantages of NIV include avoiding side effects and complications associated with endotracheal intubation, improving patient comfort, and preserving airway defense mechanisms. Factors that affect the success of NIV in patients with ARF are clinicians' expertise, selection of patient, choice of interface, selection of ventilator setting, proper monitoring, and patient motivation...
December 2016: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/27842545/rising-total-costs-and-mortality-rates-associated-with-admissions-due-to-copd-exacerbations
#15
Nicolas Molinari, Pascal Chanez, Nicolas Roche, Engi Ahmed, Isabelle Vachier, Arnaud Bourdin
BACKGROUND: To examine trends in mortality, costs and in-hospital management and outcomes of severe COPD exacerbations admitted in France. METHODS: Patients hospitalized from 2007 to 2012 with COPD exacerbation as the primary diagnosis were identified from the exhaustive French medico-administrative hospitalizations database records. Four groups of severe COPD exacerbations were defined: hospitalisation in a general ward (GW) without acute respiratory failure (ARF), GW with ARF, ICU without invasive mechanical ventilation (MV), and ICU with MV...
November 14, 2016: Respiratory Research
https://www.readbyqxmd.com/read/27835672/the-expression-of-water-and-ion-channels-in-diffuse-alveolar-damage-is-not-dependent-on-dad-etiology
#16
Ruy Camargo Pires-Neto, Fabiola Del Carlo Bernardi, Priscila Alves de Araujo, Thais Mauad, Marisa Dolhnikoff
INTRODUCTION: Aquaporins and ion channels are membrane proteins that facilitate the rapid movement of water and solutes across biological membranes. Experimental and in vitro studies reported that the function of these channels and pulmonary edema resolution are impaired in acute lung injury (ALI). Although current evidence indicates that alveolar fluid clearance is impaired in patients with ALI/diffuse alveolar damage (DAD), few human studies have addressed the alterations in pulmonary channels in this clinical condition...
2016: PloS One
https://www.readbyqxmd.com/read/27835656/the-association-of-peri-procedural-blood-transfusion-with-morbidity-and-mortality-in-patients-undergoing-percutaneous-lower-extremity-vascular-interventions-insights-from-bmc2-vic
#17
Peter K Henke, Yeo Jung Park, Sachinder Hans, Paul Bove, Robert Cuff, Andris Kazmers, Theodore Schreiber, Hitinder S Gurm, P Michael Grossman
OBJECTIVE: To determine the predictors of periprocedural blood transfusion and the association of transfusion on outcomes in high risk patients undergoing endoluminal percutaneous vascular interventions (PVI) for peripheral arterial disease. METHODS/RESULTS: Between 2010-2014 at 47 hospitals participating in a statewide quality registry, 4.2% (n = 985) of 23,273 patients received a periprocedural blood transfusion. Transfusion rates varied from 0 to 15% amongst the hospitals in the registry...
2016: PloS One
https://www.readbyqxmd.com/read/27835592/epigenetic-upregulation-of-arl4c-due-to-dna-hypomethylation-in-the-3-untranslated-region-promotes-tumorigenesis-of-lung-squamous-cell-carcinoma
#18
Shinsuke Fujii, Keiko Shinjo, Shinji Matsumoto, Takeshi Harada, Satoshi Nojima, Sunao Sato, Yu Usami, Satoru Toyosawa, Eiichi Morii, Yutaka Kondo, Akira Kikuchi
ADP-ribosylation factor (ARF)-like 4c (ARL4C) expression, induced by a combination of Wnt/β-catenin and EGF/Ras signaling, has been demonstrated to form epithelial morphogenesis. ARL4C overexpression, due to Wnt/β-catenin and EGF/Ras signaling alterations, was involved in tumorigenesis. It was also reported that ARL4C expression correlates with DNA hypomethylation in the 3'-untranslated region (UTR) of ARL4C gene during lymphogenesis. The current study was conducted to investigate the expression and functions of ARL4C due to DNA hypomethylation in lung and tongue cancers...
November 7, 2016: Oncotarget
https://www.readbyqxmd.com/read/27829235/carf-activates-beta-catenin-tcf-signaling-in-the-hepatocellular-carcinoma
#19
Xin Fan, Xiaoyan Ma, Lei Cui, Shengchun Dang, Jianguo Qu, Jianxin Zhang, Xuqing Wang, Zhengfa Mao
Overactivation of Ras signaling is very common in the hepatocellular carcinoma (HCC) due to its constitutive active mutation, which makes it a big challenge to target Ras signaling. Therefore, identifying effectors downstream of Ras signaling would benefit the development of novel therapeutic strategies. In this study, it was found that the expression of CARF (collaborate of ARF) was induced by oncogenic RasV12. The expression of CARF was up-regulated in both HCC mouse model (Alb-Cre; P53f/f; Loxp-Stop-Loxp-RasG12D) and human HCC clinical samples...
November 5, 2016: Oncotarget
https://www.readbyqxmd.com/read/27828913/long-term-results-of-total-retinectomy-in-cases-with-advanced-proliferative-vitreoretinopathy
#20
Murat Karacorlu, Isil Sayman Muslubas, Mumin Hocaoglu, Serra Arf, Mehmet Giray Ersoz
PURPOSE: To evaluate the long-term results of total retinectomy in patients with rhegmatogenous retinal detachment and severe proliferative vitreoretinopathy. METHODS: Seven eyes of 7 patients had pars plana vitrectomy, with or without pars plana lensectomy, and total retinectomy, with or without silicone oil tamponade, for the management of rhegmatogenous retinal detachment and proliferative vitreoretinopathy (Grade D1-3) after previous complex vitreoretinal surgery procedures...
November 8, 2016: Retina
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