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https://www.readbyqxmd.com/read/28591657/agc-kinases-mechanisms-of-regulation-%C3%A2-and-innovative-drug-development
#1
REVIEW
Alejandro E Leroux, Jörg Schulze, Ricardo M Biondi
The group of AGC kinases consists of 63 evolutionarily related serine/threonine protein kinases comprising PDK1, PKB/Akt, SGK, PKC, PRK/PKN, MSK, RSK, S6K, PKA, PKG, DMPK, MRCK, ROCK, NDR, LATS, CRIK, MAST, GRK, Sgk494, and YANK, while two other families, Aurora and PLK, are the most closely related to the group. Eight of these families are physiologically activated downstream of growth factor signaling, while other AGC kinases are downstream effectors of a wide range of signals. The different AGC kinase families share aspects of their mechanisms of inhibition and activation...
June 4, 2017: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/28552126/hue-texture-embedded-region-based-model-for-magnifying-endoscopy-with-narrow-band-imaging-image-segmentation-based-on-visual-features
#2
Xiaoqi Liu, Chengliang Wang, Jianying Bai, Guobin Liao, Yanjun Zhao
BACKGROUND AND OBJECTIVE: Magnification endoscopy with narrow-band imaging (ME-NBI) has become a feasible tool for detecting diseases within the human gastrointestinal tract, and is more applied by physicians to search for pathological abnormalities with gastric cancer such as precancerous lesions, early gastric cancer and advanced cancer. In order to improve the reliability of diseases detection, there is a need for applying or proposing computer-assisted methodologies to efficiently analyze and process ME-NBI images...
July 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28503745/interactions-between-phyb-and-pif-proteins-alter-thermal-reversion-reactions-in-vitro
#3
Robert W Smith, Britta Helwig, Adrie H Westphal, Eran Pel, Jan Willem Borst, Christian Fleck
The dynamic behaviour of the plant red/far-red light photoreceptor phytochrome B (phyB) has been elucidated in natural and synthetic systems. Red light switches phyB from the inactive Pr state to the active Pfr state, a process that is reversed by far-red light. Alongside light signals, phyB activity is constrained by thermal reversion (that is prominent in the dark) and protein-protein interactions between phyB, other phytochrome molecules, and, among others, PHYTOCHROME INTERACTING FACTORs (PIFs). Requirements for phyB-PIF association have been well studied and are central to light-regulated synthetic tools...
May 15, 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28500704/meta-analysis-of-the-transcriptome-reveals-a-core-set-of-shade-avoidance-genes-in-arabidopsis
#4
Romina Sellaro, Manuel Pacín, Jorge J Casal
The presence of neighboring vegetation modifies the light input perceived by photo-sensory receptors, initiating a signaling cascade that adjusts plant growth and physiology. Thousands of genes can change their expression during this process, but the structure of the transcriptional circuit is poorly understood. Here we present a meta-analysis of transcriptome data from Arabidopsis thaliana exposed to neighbor signals in different contexts, including organs where growth is promoted or inhibited by these signals...
May 2017: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/28500462/perfusion-index-and-left-ventricular-output-correlation-in-healthy-term-infants
#5
Iuri Corsini, Alessandra Cecchi, Caterina Coviello, Carlo Dani
Perfusion index (PI) is a non-invasive marker of peripheral perfusion which is detected by an oximeter. We aimed to assess the correlation between PI and left ventricular output (LVO) in healthy term infants at the time of the screening for congenital heart disease (CHD). PI was measured at 48 ± 2 h of life in the infant's right hand (PIrh) and in 1 foot (PIf) contemporary to SpO2 for CHD screening. Heart ultrasound was performed immediately after the screening procedure for measuring LVO. Forty-nine healthy term infants were studied...
May 12, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28492231/ppks-mediate-direct-signal-transfer-from-phytochrome-photoreceptors-to-transcription-factor-pif3
#6
Weimin Ni, Shou-Ling Xu, Eduardo González-Grandío, Robert J Chalkley, Andreas F R Huhmer, Alma L Burlingame, Zhi-Yong Wang, Peter H Quail
Upon light-induced nuclear translocation, phytochrome (phy) sensory photoreceptors interact with, and induce rapid phosphorylation and consequent ubiquitin-mediated degradation of, transcription factors, called PIFs, thereby regulating target gene expression and plant development. Nevertheless, the biochemical mechanism of phy-induced PIF phosphorylation has remained ill-defined. Here we identify a family of nuclear protein kinases, designated Photoregulatory Protein Kinases (PPK1-4; formerly called MUT9-Like Kinases (MLKs)), that interact with PIF3 and phyB in a light-induced manner in vivo...
May 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28440582/phytochrome-interacting-factors-mediate-metabolic-control-of-the-circadian-system-in-arabidopsis
#7
Ekaterina Shor, Inyup Paik, Shlomit Kangisser, Rachel Green, Enamul Huq
The circadian (c. 24 h) system has a central role in regulating the timing and coordination of photosynthesis, and in turn photosynthesis and photosynthetic products which are controlled by the circadian clock feedback to affect the circadian oscillator that generates rhythms. However, little is known about the mechanism(s) by which this feedback occurs. One group of likely candidates for signal transduction to the circadian clock are the PHYTOCHROME INTERACTING FACTOR (PIF) family of transcription factors which have been shown to be involved in numerous signaling pathways in Arabidopsis...
July 2017: New Phytologist
https://www.readbyqxmd.com/read/28433946/the-activities-of-the-e3-ubiquitin-ligase-cop1-spa-a-key-repressor-in-light-signaling
#8
REVIEW
Ute Hoecker
Light is a critical signal to integrate plant growth and development with the environment. Downstream of photoreceptors, the E3 ubiquitin ligase COP1/SPA is a key repressor of photomorphogenesis which targets many positive regulators of light signaling, mainly transcription factors, for degradation in darkness. In light-grown plants COP1/SPA activity is repressed, allowing light responses to occur. This review provides an overview on our current knowledge on COP1/SPA repressor function, focusing in particular on the roles of the respective protein domains and the mechanisms of light-induced inactivation of COP1/SPA...
April 20, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28426369/hos1-acts-as-a-key-modulator-of-hypocotyl-photomorphogenesis
#9
Ju-Heon Kim, Hyo-Jun Lee, Chung-Mo Park
Plants recognize light as an environmental signal to determine the proper timing of growth and development. In Arabidopsis seedlings, hypocotyl growth is promoted in the dark but suppressed in the light. It is known that the red/far-red light-sensing receptor phytochrome B (phyB) suppresses the function of PHYTOCHROME INTERACTING FACTOR (PIF) transcription factors, which act as photomorphogenic repressors. However, molecular mechanisms underlying the phyB-mediated inhibition of PIF functioning remain unclear...
April 20, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28423690/preimplantation-factor-pif-protects-cultured-embryos-against-oxidative-stress-relevance-for-recurrent-pregnancy-loss-rpl-therapy
#10
Lindsay F Goodale, Soren Hayrabedran, Krassimira Todorova, Roumen Roussev, Sivakumar Ramu, Christopher Stamatkin, Carolyn B Coulam, Eytan R Barnea, Robert O Gilbert
Recurrent pregnancy loss (RPL) affects 2-3% of couples. Despite a detailed work-up, the etiology is frequently undefined, leading to non-targeted therapy. Viable embryos and placentae express PreImplantation Factor (PIF). Maternal circulating PIF regulates systemic immunity and reduces circulating natural killer cells cytotoxicity in RPL patients. PIF promotes singly cultured embryos' development while anti-PIF antibody abrogates it. RPL serum induced embryo toxicity is negated by PIF. We report that PIF rescues delayed embryo development caused by <3 kDa RPL serum fraction likely by reducing reactive oxygen species (ROS)...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423529/pif-promotes-brain-re-myelination-locally-while-regulating-systemic-inflammation-clinically-relevant-multiple-sclerosis-m-smegmatis-model
#11
Giuseppe Migliara, Martin Mueller, Alessia Piermattei, Chaya Brodie, Michael J Paidas, Eytan R Barnea, Francesco Ria
Neurologic disease diagnosis and treatment is challenging. Multiple Sclerosis (MS) is a demyelinating autoimmune disease with few clinical forms and uncertain etiology. Current studies suggest that it is likely caused by infection(s) triggering a systemic immune response resulting in antigen/non-antigen-related autoimmune response in central nervous system (CNS). New therapeutic approaches are needed. Secreted by viable embryos, PreImplantation Factor (PIF) possesses a local and systemic immunity regulatory role...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28420710/reciprocal-proteasome-mediated-degradation-of-pifs-and-hfr1-underlies-photomorphogenic-development-in-arabidopsis
#12
Xiaosa Xu, Praveen Kumar Kathare, Vinh Ngoc Pham, Qingyun Bu, Andrew Nguyen, Enamul Huq
The phytochrome-mediated regulation of photomorphogenesis under red and far-red light conditions involves both positively and negatively acting factors. The positively acting factors (e.g. HY5/HFR1/LAF1 and others) are degraded in the dark to prevent photomorphogenesis. By contrast, the negatively acting factors (e.g. phytochrome-interacting factors or PIFs) are degraded in response to light to promote photomorphogenesis. Here, we show that the negatively acting factor PIF1 is also degraded in the dark by direct heterodimerization with the positively acting factor HFR1...
May 15, 2017: Development
https://www.readbyqxmd.com/read/28406710/suboptimal-inspiratory-flow-rates-are-associated-with-chronic-obstructive-pulmonary-disease-and-all-cause-readmissions
#13
Chee H Loh, Stephen P Peters, Tina M Lovings, Jill A Ohar
RATIONALE: Dry powdered inhalers (DPIs) are prescribed after hospitalization for acute exacerbation of COPD (AECOPD). Peak inspiratory flow (PIF) affects DPI delivery. OBJECTIVES: To study the impact of PIF on readmission after hospitalization for AECOPD. METHODS: A retrospective analysis of hospitalized patients, enrolled in an AECOPD care plan, was performed. Data analyzed included PIF, age, gender, length of stay, Charlson Comorbidity Index, COPD Assessment Test (CAT) and Modified Medical Research Council score, % predicted FEV1, FVC and inspiratory capacity (IC)...
April 13, 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28400018/reassessment-of-cronobacter-spp-originally-isolated-as-enterobacter-sakazakii-from-infant-food
#14
Ömer Akineden, Vanessa Heinrich, Madeleine Gross, Ewald Usleber
Cronobacter spp. cause infant disease, several cases have been associated with powdered infant formulae (PIF). In the early 2000s, contamination of German PIF with these opportunistic pathogens was quite common. Before 2008, all isolates Cronobacter spp. had been classified as Enterobacter sakazakii, therefore little is known about species diversity within such isolates. Genetic, serologic, and biochemical traits of 80 Cronobacter isolates, originally obtained 2003-2006 within infant food surveys in Germany, were reassessed in this study...
August 2017: Food Microbiology
https://www.readbyqxmd.com/read/28365739/grtedb-the-first-web-based-database-of-transposable-elements-in-cotton-gossypium-raimondii
#15
Zhenzhen Xu, Jing Liu, Wanchao Ni, Zhen Peng, Yue Guo, Wuwei Ye, Fang Huang, Xianggui Zhang, Peng Xu, Qi Guo, Xinlian Shen, Jianchang Du
Although several diploid and tetroploid Gossypium species genomes have been sequenced, the well annotated web-based transposable elements (TEs) database is lacking. To better understand the roles of TEs in structural, functional and evolutionary dynamics of the cotton genome, a comprehensive, specific, and user-friendly web-based database, Gossypium raimondii transposable elements database (GrTEdb), was constructed. A total of 14 332 TEs were structurally annotated and clearly categorized in G. raimondii genome, and these elements have been classified into seven distinct superfamilies based on the order of protein-coding domains, structures and/or sequence similarity, including 2929 Copia-like elements, 10 368 Gypsy-like elements, 299 L1 , 12 Mutators , 435 PIF-Harbingers , 275 CACTAs and 14 Helitrons ...
January 1, 2017: Database: the Journal of Biological Databases and Curation
https://www.readbyqxmd.com/read/28347294/from-good-health-to-illness-with-post-infectious-fatigue-syndrome-a-qualitative-study-of-adults-experiences-of-the-illness-trajectory
#16
Eva Stormorken, Leonard A Jason, Marit Kirkevold
BACKGROUND: Municipal drinking water contaminated with the parasite Giardia lamblia in Bergen, Norway, in 2004 caused an outbreak of gastrointestinal infection in 2500 people, according to the Norwegian Prescription Database. In the aftermath a minor group subsequently developed post-infectious fatigue syndrome (PIFS). Persons in this minor group had laboratory-confirmed parasites in their stool samples, and their enteritis had been cured by one or more courses of antibiotic treatment...
March 27, 2017: BMC Family Practice
https://www.readbyqxmd.com/read/28338015/simultaneously-measuring-multiple-protein-interactions-and-their-correlations-in-a-cell-by-protein-interactome-footprinting
#17
Si-Wei Luo, Zhi Liang, Jia-Rui Wu
Quantitatively detecting correlations of multiple protein-protein interactions (PPIs) in vivo is a big challenge. Here we introduce a novel method, termed Protein-interactome Footprinting (PiF), to simultaneously measure multiple PPIs in one cell. The principle of PiF is that each target physical PPI in the interactome is simultaneously transcoded into a specific DNA sequence based on dimerization of the target proteins fused with DNA-binding domains. The interaction intensity of each target protein is quantified as the copy number of the specific DNA sequences bound by each fusion protein dimers...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28332986/risk-factors-for-pelvic-insufficiency-fractures-in-locally-advanced-cervical-cancer-following-intensity-modulated-radiation-therapy
#18
Anne Ramlov, Erik Morre Pedersen, Lisbeth Røhl, Esben Worm, Lars Fokdal, Jacob Chr Lindegaard, Kari Tanderup
PURPOSE: To investigate the incidence of and risk factors for pelvic insufficiency fracture (PIF) after definitive chemoradiation therapy for locally advanced cervical cancer (LACC). METHODS AND MATERIALS: We analyzed 101 patients with LACC treated from 2008-2014. Patients received weekly cisplatin and underwent external beam radiation therapy with 45 Gy in 25 fractions (node-negative patients) or 50 Gy in 25 fractions with a simultaneous integrated boost of 60 Gy in 30 fractions (node-positive patients)...
April 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28291401/pelvic-insufficiency-fracture-pif-incidence-in-patients-treated-with-intensity-modulated-radiation-therapy-imrt-for-gynaecological-or-anal-cancer-single-institution-experience-and-review-of-the-literature
#19
REVIEW
Louis Bazire, Haoping Xu, Jean-Philippe Foy, Malika Amessis, Caroline Malhaire, Kim Cao, Anne De La Rochefordiere, Youlia M Kirova
OBJECTIVE: To summarize the results of pelvic insufficiency fracture (PIF) incidence in patients with anal or gynaecological cancer treated by pelvic intensity-modulated radiation therapy (IMRT). METHODS: The clinical and morphological (CT and/or pelvic MRI) characteristics of patients treated by IMRT at our institution between 2007 and 2014 were analyzed. The global incidence of PIF after external beam radiotherapy and the impact of tumour site (gynaecological or anal cancer) were determined...
May 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28284694/salmonella-detection-in-powdered-dairy-products-using-a-novel-molecular-tool
#20
Yueming Zhao, Xia Jiang, Yanyan Qu, Ruili Pan, Xinyi Pang, Yujun Jiang, Chaoxin Man
In this study, we developed a rapid, specific, and sensitive loop-mediated isothermal amplification technique combined with a lateral flow dipstick (LAMP-LFD) method to detect Salmonella targeting the siiA gene in powdered infant formula (PIF). The specificity of the detection method (LAMP-LFD) approached 100% using 21 Salmonella and 31 non-Salmonella bacterial strains. This detection method exhibited high sensitivity limits for pure cultures at 3.7 cfu/mL and in PIF at 2.2 cfu/g without enrichment. To evaluate the applicability of the LAMP-LFD method, we detected 60 positive PIF samples and 20 negative PIF samples...
May 2017: Journal of Dairy Science
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