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https://www.readbyqxmd.com/read/27915292/the-dual-role-of-dksa-protein-in-the-regulation-of-escherichia-coli-pargx-promoter
#1
Robert Łyżeń, Amarnath Maitra, Klaudia Milewska, Maja Kochanowska-Łyżeń, V James Hernandez, Agnieszka Szalewska-Pałasz
Gene expression regulation by the stringent response effector, ppGpp, is facilitated by DksA protein; however DksA and ppGpp can play independent roles in transcription. In Escherichia coli, the pArgX promoter which initiates the transcription of four tRNA genes was shown to be inhibited by ppGpp. Our studies on the role of DksA in pArgX regulation revealed that it can stimulate transcription by increasing the binding of RNA polymerase to the promoter and the productive transcription complex formation. However, when DksA is present together with ppGpp a severe down-regulation of promoter activity is observed...
December 1, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27914812/protective-effects-of-gomisin-n-against-hepatic-steatosis-through-ampk-activation
#2
Ye-Rang Yun, Ji-Hyun Kim, Ji Ha Kim, Myeong Ho Jung
Gomisin N (GN) is a phytochemical derived from Schisandra chinensis. It has been reported to exert a protective effect against hepatic steatosis by attenuating endoplasmic recticulum (ER) stress. However, the detailed mechanism by which GN inhibits hepatic steatosis remains to be elucidated. In this study, we examined whether GN activates AMP-activated protein kinase (AMPK) and exerts therapeutic effects on liver X receptor (LXR)- or palmitic acid (PA)-induced triglyceride (TG) accumulation in HepG2 cells. Furthermore, in vivo protective effects of GN against hepatic steatosis were assessed in high-fat diet (HFD)-induced obese mice...
November 30, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27914782/co-metabolism-of-substrates-by-bacillus-thuringiensis-regulates-polyhydroxyalkanoate-co-polymer-composition
#3
Subhasree Ray, Vipin Chandra Kalia
Polyhydroxyalkanoate (PHA) production by Bacillus thuringiensis EGU45 was studied by co-metabolism of crude glycerol (CG) (1%, v/v), glucose (0.05-0.5%, w/v) and propionic acid (0.05-0.5%, v/v) under batch (shake flask) culture conditions. Glycerol+PA combination resulted in 15-100mg/L PHA co-polymers with a HV content of 33-81mol%. The addition of NH4Cl (0.5%, w/v) to CG+PA enhanced PHA production by 1.55-fold, with a HV content of 58-70mol%. The time period of incubation of PA to the feed: CG+glucose was optimized to be 3h after initiation of fermentation...
November 23, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27914781/incident-air-kerma-to-absorbed-organ-dose-conversion-factors-for-breast-and-lung-in-pa-thorax-radiography-the-effect-of-patient-thickness-and-radiation-quality
#4
A Kelaranta, P Toroi, P Vock
PURPOSE: Converting the measurable quantities to patient organ doses in projection radiography is usually based on a standard-sized patient model and a specific radiation quality, which are likely to differ from the real situation. Large inaccuracies can therefore be obtained in organ doses, because organ doses are dependent on the exposure parameters, exposure geometry and patient anatomy. In this study, the effect of radiation quality and patient thickness on the organ dose conversion factors were determined...
November 30, 2016: Physica Medica: PM
https://www.readbyqxmd.com/read/27914660/radiographic-and-clinical-results-of-tension-suture-fixation-using-two-washers-with-philos-plate-for-proximal-humeral-fractures
#5
Chul-Hyun Cho, Du Han Kim, Beom-Soo Kim
INTRODUCTION: The purpose of this study was to evaluate the radiographic and clinical results of tension suture fixation using two washers with PHILOS plate (Synthes, West Chester, PA, USA) for proximal humeral fractures. PATIENTS AND METHODS: Consecutive 39 patients were included and divided into two groups of adequate and inadequate medial support (MS (+) group vs MS (-) group). The mean follow-up period was 45months (range: 26-69 months). The mean age at the time of surgery was 59 years (range: 17-86 years) and there were 12 men and 27 women...
November 28, 2016: Injury
https://www.readbyqxmd.com/read/27914649/nosocomial-outbreak-of-extensively-drug-resistant-pseudomonas-aeruginosa-associated-with-aromatherapy
#6
Astrid Mayr, Guido Hinterberger, Ingo H Lorenz, Peter Kreidl, Wolfgang Mutschlechner, Cornelia Lass-Flörl
An increase of extensively drug-resistant Pseudomonas aeruginosa (XDR-PA) in various clinical specimens among intensive care unit patients (n = 7) initiated an outbreak investigation consisting of patient data analyses, control of adherence to infection control guidelines, microbiologic surveys, and molecular-based studies. XDR-PA was detected in a jointly used aroma-oil nursing bottle for aromatherapy. We implemented the restriction of oil sharing among patients. Hence, the outbreak was controlled successfully...
November 30, 2016: American Journal of Infection Control
https://www.readbyqxmd.com/read/27914028/suboptimal-weight-loss-and-weight-regain-after-gastric-bypass-surgery-postoperative-status-of-energy-intake-eating-behavior-physical-activity-and-psychometrics
#7
Tina Amundsen, Magnus Strømmen, Catia Martins
BACKGROUND: Suboptimal weight loss (SWL) and weight regain (WR) after gastric bypass surgery (GB) remains poorly understood. OBJECTIVES: This study aims to compare GB patients experiencing SWL or significant WR (SigWR) with successful controls, regarding postoperative food intake, eating behavior, physical activity (PA), and psychometrics. METHODS: Forty-nine patients with >1 year post-surgery were classified as either experiencing SWL (excess body weight loss, EWL, <50%, n = 22) or SigWR (total weight regain ≥15%, n = 38), with respective control groups...
December 2, 2016: Obesity Surgery
https://www.readbyqxmd.com/read/27913983/mobile-health-technology-can-objectively-capture-physical-activity-pa-targets-among-african-american-women-within-resource-limited-communities-the-washington-d-c-cardiovascular-health-and-needs-assessment
#8
S Thomas, L Yingling, J Adu-Brimpong, V Mitchell, C R Ayers, G R Wallen, M Peters-Lawrence, A T Brooks, D M Sampson, K L Wiley, J Saygbe, J Henry, A Johnson, A Graham, L Graham, T M Powell-Wiley
BACKGROUND: Little is understood about using mobile health (mHealth) technology to improve cardiovascular (CV) health among African-American women in resource-limited communities. METHODS: We conducted the Washington, D.C. CV Health and Needs Assessment in predominantly African-American churches in city wards 5, 7, and 8 with the lowest socioeconomic status based on community-based participatory research (CBPR) principles. The assessment measured CV health factors: body mass index (BMI), fasting blood glucose and cholesterol, blood pressure, fruit/vegetable (F/V) intake, physical activity (PA), and smoking...
December 2, 2016: Journal of Racial and Ethnic Health Disparities
https://www.readbyqxmd.com/read/27913690/self-reported-visual-impairment-physical-activity-and-all-cause-mortality-the-hunt-study
#9
Audun Brunes, W Dana Flanders, Liv Berit Augestad
AIMS: To examine the associations of self-reported visual impairment and physical activity (PA) with all-cause mortality. METHODS: This prospective cohort study included 65,236 Norwegians aged ⩾20 years who had participated in the Nord-Trøndelag Health Study (HUNT2, 1995-1997). Of these participants, 11,074 (17.0%) had self-reported visual impairment (SRVI). The participants' data were linked to Norway's Cause of Death Registry and followed throughout 2012. Hazard ratios and 95% confidence intervals (CI) were assessed using Cox regression analyses with age as the time-scale...
December 1, 2016: Scandinavian Journal of Public Health
https://www.readbyqxmd.com/read/27913123/a-two-stage-surgical-and-endovascular-treatment-of-rare-multiple-aneurysms-of-pancreatic-arteries
#10
Bibek Aryal, Teruo Komokata, Takayuki Ueno, Bunsei Yamamoto, Terutoshi Senokuchi, Hiroshi Yasuda, Mamoru Kaieda, Yutaka Imoto
Aneurysms of pancreatic arteries (PAs) are often found incidentally during evaluation of other abdominal pathology. Aneurysms involving multiple PAs are rarely reported in the literature. In case reports of PA aneurysm, inferior pancreaticoduodenal artery is the usual site of aneurysm occurrence. PA aneurysms can be treated surgically by aneurysm exclusion, excision, and by endovascular techniques. However, no clear consensus exists regarding treatment modality, leaving the surgeon to determine the most appropriate approach bearing in mind their experience, anatomical location of the aneurysm, involved artery and urgency of the procedure...
November 29, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27913097/effect-of-24-epibrassinolide-on-brassica-napus-alternative-respiratory-pathway-guard-cells-movements-and-phospholipid-signaling-under-salt-stress
#11
Michael Derevyanchuk, Sergii Kretynin, Oksana Iakovenko, Raisa Litvinovskaya, Vladimir Zhabinskii, Jan Martinec, Yaroslav Blume, Vladimir Khripach, Volodymyr Kravets
Using Brassica napus roots we observed statistically significant increase in alternative respiratory pathway in response to exogenous 24-epibrassinolide (EBL) under optimal conditions and salinity. Also we observed activation of phospholipid signaling under the same conditions in response to EBL by measuring levels of lipid second messengers - diacylglycerol (DAG) and phosphatidic acid (PA). We found that brassinosteroids cause closure of stomata in isolated leaf disks while inhibitors of alternative oxidase cancelled these effects...
November 29, 2016: Steroids
https://www.readbyqxmd.com/read/27912947/exploratory-outcome-assessment-of-qigong-tai-chi-easy-on-breast-cancer-survivors
#12
Linda K Larkey, Denise J Roe, Lisa Smith, Denise Millstine
OBJECTIVE: Breast cancer survivors (BCSs) experience symptoms affecting overall quality of life (QOL), often for a prolonged period post-treatment. Meditative Movement (MM), including Qigong and Tai Chi Easy (QG/TCE), has demonstrated benefit for improving QOL issues such as fatigue and sleep, but there is limited evidence of its impact on cognitive function, overall physical activity, and body weight for BCSs. DESIGN: This double-blind, randomized controlled pilot study with 87 female BCSs explored effects of QG/TCE on mental and physical QOL (Medical Outcomes Survey, Short Form), cognitive function (Functional Assessment of Cancer Therapy-Cognitive Function and two cognitive performance tests from the WAIS III), overall levels of physical activity (PA)(Brief Physical Activity Questionnaire) and body mass index (BMI)...
December 2016: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/27912873/pomolic-acid-suppresses-hif1%C3%AE-vegf-mediated-angiogenesis-by-targeting-p38-mapk-and-mtor-signaling-cascades
#13
Ji-Hyun Park, Jaewoo Yoon, Byoungduck Park
BACKGROUND: Pomolic acid (PA), an active triterpenoid from Euscaphis japonica, inhibits the proliferation of a variety of cancer cells, but the molecular mechanisms of the anti-angiogenic potential of PA have not been fully elucidated in breast cancer cells. HYPOTHESIS/PURPOSE: We investigated the molecular mechanisms underlying the anti-angiogenic effect of PA in epidermal growth factor (EGF)-responsive human breast cancer cells, MCF-7 and MDA-MB-231, and human umbilical vascular endothelial cells (HUVEC)...
December 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27911467/a-systematic-investigation-of-the-charging-effect-in-scanning-electron-microscopy-for-metal-nanostructures-on-insulating-substrates
#14
R Flatabø, A Coste, M M Greve
Scanning electron microscopy is perhaps the most important method for investigating and characterizing nanostructures. A well-known challenge in scanning electron microscopy is the investigation of insulating materials. As insulating materials do not provide a path to ground they accumulate charge, evident as image drift and image distortions. In previous work, we have seen that sample charging in arrays of metal nanoparticles on glass substrates leads to a shrinkage effect, resulting in a measurement error in the nanoparticle dimension of up to 15% at 10 kV and a probe current of 80 ± 10 pA...
December 2, 2016: Journal of Microscopy
https://www.readbyqxmd.com/read/27910550/measurement-of-neutral-gas-pressure-in-the-d-module-of-gamma-10-pdx-by-using-asdex-type-fast-ionization-gauge
#15
K Ichimura, M Fukumoto, M M Islam, M S Islam, K Shimizu, K Fukui, M Ohuchi, K Nojiri, A Terakado, M Yoshikawa, N Ezumi, M Sakamoto, Y Nakashima
In the divertor simulation experiments in the GAMMA 10/PDX tandem mirror, pressure of the neutral gas was investigated by using a fast ionization gauge. The gauge was absolutely calibrated for hydrogen gas by using a capacitance manometer. Change of the gauge sensitivity due to the magnetic field of GAMMA 10/PDX was also evaluated. The typical gas pressure measured in detached plasma experiments was 0.1-10 Pa. The degree of plasma detachment determined from the reduction of heat flux was enhanced as the gas pressure increases...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910460/low-magnetic-johnson-noise-electric-field-plates-for-precision-measurement
#16
I M Rabey, J A Devlin, E A Hinds, B E Sauer
We describe a parallel pair of high voltage electric field plates designed and constructed to minimise magnetic Johnson noise. They are formed by laminating glass substrates with a commercially available polyimide (Kapton) tape, covered with a thin gold film. Tested in vacuum, the outgassing rate is less than 5 × 10(-5) mbar l/s. The plates have been operated at electric fields up to 8.3 kV/cm, when the leakage current is at most a few hundred pA. The design is discussed in the context of a molecular spin precession experiment to measure the permanent electric dipole moment of the electron...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27909557/eating-habits-physical-activity-nutrition-knowledge-and-self-efficacy-by-obesity-status-in-upper-grade-elementary-school-students
#17
Seong Ah Ha, Seo Yeon Lee, Kyung A Kim, Jung Sook Seo, Cheong Min Sohn, Hae Ryun Park, Kyung Won Kim
BACKGROUND/OBJECTIVES: Childhood obesity has increased in recent decades in Korea. This study was designed to examine differences in the eating habits, physical activity (PA), nutrition knowledge, and self-efficacy of children by obesity status. SUBJECTS/METHODS: Subjects were 5th-grade children from 70 elementary schools in 17 cities nationwide. Two-stage stratified cluster sampling was employed. Survey questionnaire included items related to general characteristics, eating habits, PA, nutrition knowledge and self-efficacy...
December 2016: Nutrition Research and Practice
https://www.readbyqxmd.com/read/27909526/achieving-bidirectional-long-delays-in-pulmonary-vein-antral-lines-prior-to-bidirectional-block-in-patients-with-paroxysmal-atrial-fibrillation-the-bi-bi-technique-for-atrial-fibrillation-ablation
#18
Adel F Mina Md Facc Fhrs, Nicholas L Warnecke Pa-C
Background: Pulmonary Vein Antral isolation (PVAI) is currently the standard of care for both paroxysmal and persistent atrial fibrillation ablation. Reconnection to the pulmonary vein is the most common cause of recurrence of atrial fibrillation. Achieving the endpoint of bidirectional block (BDB) for cavotricuspid isthmus dependant flutter has improved our outcomes for atrial flutter ablation. With this we tried to achieve long delays in the pulmonary veins antral lines prior to complete isolation comparable to those delays found in patient with bidirectional block of atrial flutter lines...
August 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27909410/mechanosensitive-molecular-networks-involved-in-transducing-resistance-exercise-signals-into-muscle-protein-accretion
#19
REVIEW
Emil Rindom, Kristian Vissing
Loss of skeletal muscle myofibrillar protein with disease and/or inactivity can severely deteriorate muscle strength and function. Strategies to counteract wasting of muscle myofibrillar protein are therefore desirable and invite for considerations on the potential superiority of specific modes of resistance exercise and/or the adequacy of low load resistance exercise regimens as well as underlying mechanisms. In this regard, delineation of the potentially mechanosensitive molecular mechanisms underlying muscle protein synthesis (MPS), may contribute to an understanding on how differentiated resistance exercise can transduce a mechanical signal into stimulation of muscle accretion...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27908826/itraq-based-quantitative-proteomic-analysis-of-midgut-in-silkworm-infected-with-bombyx-mori-cytoplasmic-polyhedrosis-virus
#20
Kun Gao, Xiang-Yuan Deng, Meng-Ke Shang, Guang-Xing Qin, Cheng-Xiang Hou, Xi-Jie Guo
: Bombyx mori cytoplasmic polyhedrosis virus (BmCPV) specifically infects the epithelial cells in the midgut of silkworm and causes them to death, which negatively affects the sericulture industry. In order to determine the midgut response at the protein levels to the virus infection, differential proteomes of the silkworm midgut responsive to BmCPV infection were identified with isobaric tags for relative and absolute quantitation (iTRAQ) labeling followed by liquid chromatography-tandem mass spectrometry (LC-MS/MS)...
November 28, 2016: Journal of Proteomics
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