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https://www.readbyqxmd.com/read/28340340/selective-chemical-inhibition-of-pgc-1%C3%AE-gluconeogenic-activity-ameliorates-type-2-diabetes
#1
Kfir Sharabi, Hua Lin, Clint D J Tavares, John E Dominy, Joao Paulo Camporez, Rachel J Perry, Roger Schilling, Amy K Rines, Jaemin Lee, Marc Hickey, Melissa Bennion, Michelle Palmer, Partha P Nag, Joshua A Bittker, José Perez, Mark P Jedrychowski, Umut Ozcan, Steve P Gygi, Theodore M Kamenecka, Gerald I Shulman, Stuart L Schreiber, Patrick R Griffin, Pere Puigserver
Type 2 diabetes (T2D) is a worldwide epidemic with a medical need for additional targeted therapies. Suppression of hepatic glucose production (HGP) effectively ameliorates diabetes and can be exploited for its treatment. We hypothesized that targeting PGC-1α acetylation in the liver, a chemical modification known to inhibit hepatic gluconeogenesis, could be potentially used for treatment of T2D. Thus, we designed a high-throughput chemical screen platform to quantify PGC-1α acetylation in cells and identified small molecules that increase PGC-1α acetylation, suppress gluconeogenic gene expression, and reduce glucose production in hepatocytes...
March 23, 2017: Cell
https://www.readbyqxmd.com/read/28339182/widespread-and-indiscriminate-nanosilver-use-genuine-potential-for-microbial-resistance
#2
Cindy Gunawan, Christopher P Marquis, Rose Amal, Georgios A Sotiriou, Scott A Rice, Elizabeth J Harry
In this era of increasing antibiotic resistance, the use of alternative antimicrobials such as silver has become more widespread. Superior antimicrobial activity has been provided through fabrication of silver nanoparticles or nanosilver (NAg), which imparts cytotoxic actions distinct from those of bulk silver. In the wake of the recent discoveries of bacterial resistance to NAg and its rising incorporation in medical and consumer goods such as wound dressings and dietary supplements, we argue that there is an urgent need to monitor the prevalence and spread of NAg microbial resistance...
March 24, 2017: ACS Nano
https://www.readbyqxmd.com/read/28337956/acute-renal-graft-versus-host-disease-in-a-murine-model-of-allogeneic-bone-marrow-transplantation
#3
Peter M Schmid, Abdellatif Bouazzaoui, Karin Schmid, Christoph Birner, Christian Schach, Lars S Maier, Ernst Holler, Dierk H Endemann
Acute kidney injury (AKI) is a very common complication after allogeneic bone marrow transplantation (BMT) and associated with poor prognosis. Generally kidneys are assumed to be no direct target of Graft-versus-Host Disease (GvHD), and renal impairment is often attributed to several other factors occurring in the early phase after BMT. Our study aimed to prove the existence of renal GvHD in a fully MHC-mismatched model of BALB/c mice conditioned and transplanted according to two different intensity protocols...
March 23, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28336894/fabrication-of-functional-polyurethane-rare-earth-nanocomposite-membranes-by-electrospinning-and-its-vocs-absorption-capacity-from-air
#4
Jun Cong Ge, Nag Jung Choi
Volatile organic compounds (VOCs) are a source of air pollution and are harmful to both human health and the environment. In this study, we fabricated polyurethane/rare earth (PU/RE) composite nanofibrous membranes via electrospinning with the aim of removing VOCs from air. The morphological structure of PU/RE nanofibrous mats was investigated using field emission scanning electron microscopy (FE-SEM), fourier transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) experimental analyses. A certain amount of RE (up to 50 wt...
March 11, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28333963/why-don-t-urban-youth-in-zambia-use-condoms-the-influence-of-gender-and-marriage-on-non-use-of-male-condoms-among-young-adults
#5
Jessie Pinchoff, Christopher B Boyer, Namuunda Mutombo, Rachna Nag Chowdhuri, Thoai D Ngo
BACKGROUND: Zambia experiences high unmet need for family planning and high rates of HIV, particularly among youth. While male condoms are widely available and 95% of adults have heard of them, self-reported use in the past 12 months is low among young adults (45%). This study describes factors associated with non-use of male condoms among urban young adults in Zambia. METHODS: A household cross-sectional survey in four urban districts was conducted from November 2015 to January 2016 among sexually active young adults ages 18-24 years...
2017: PloS One
https://www.readbyqxmd.com/read/28332473/correlation-analysis-of-renal-ultrasound-elastography-and-clinical-and-pathological-changes-in-patients-with-chronic-kidney-disease%C3%A2
#6
Lingyan Peng, Tingting Zhong, Qiuling Fan, Yanjun Liu, Xuemei Wang, Lining Wang
OBJECTIVE: To analyze the correlations of renal tissue elastography with clinical biochemical indicators and pathological changes in patients with chronic kidney disease (CKD) as well as to explore the potential for renal tissue elastography as a new, noninvasive method for the dynamic monitoring of renal disease progression, efficacy assessment, and prognosis evaluation. METHODS: Patients admitted to the Department of Nephrology of the First Affiliated Hospital of China Medical University from August 2014 to January 2015 who had undergone renal biopsies were selected...
March 23, 2017: Clinical Nephrology
https://www.readbyqxmd.com/read/28317802/port-site-infections-by-nontuberculous-mycobacterium-a-retrospective-clinico-microbiological-study
#7
Roumi Ghosh, Soumen Das, Asmita De, Harish Kela, Makhan Lal Saha, Prasanta Kumar Maiti
BACKGROUND: Port-site infection (PSI) is a prevailing, chronic, nagging, treatment refractory complication of laparoscopic surgery (LS). It neutralizes the advantages of minimally invasive surgery and increases morbidity, treatment cost of patient, leading to loss of confidence on operating surgeon. PSIs are preventable with appropriate preoperative, intraoperative, and postoperative measures. Atypical mycobacterium is most commonly associated with nonhealing postlaparoscopic wound infections, causing outbreaks or sporadic cases worldwide...
January 2017: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28314232/impact-of-nitrogen-pollution-deposition-on-extracellular-enzyme-activity-microbial-abundance-and-carbon-storage-in-coastal-mangrove-sediment
#8
Ling Luo, Meng Han, Ruo-Nan Wu, Ji-Dong Gu
This study applied different concentration of NaNO3 solution to simulate the effect of inorganic nitrogen (N) deposition/pollution on carbon (C) storage in coastal mangrove sediment through observing the changes of enzyme activity and microbial abundance. Sediment collected from mangrove forest (MG) and intertidal zone (IZ) were incubated with different N rates (0 (control), 5 (low-N) and 20 (high-N) μg N g(-1) dry sediment, respectively). After incubation, the activities of phenol oxidase (PHO) and acid phosphatase (ACP) were enhanced, but β-glucosidase (GLU) and N-β-acetyl-glucosaminidase (NAG) activities were reduced by N addition...
March 8, 2017: Chemosphere
https://www.readbyqxmd.com/read/28300023/optimization-and-validation-of-a-residue-analysis-method-for-glyphosate-glufosinate-and-their-metabolites-in-plant-matrixes-by-liquid-chromatography-with-tandem-mass-spectrometry
#9
Dasharath P Oulkar, Sandip Hingmire, Arnab Goon, Manjusha Jadhav, Bharat Ugare, Ahammed Shabeer Thekkumpurath, Kaushik Banerjee
A sensitive and accurate LC with tandem MS (MS/MS)-based method was developed and validated for the analysis of the herbicide glyphosate, its metabolite aminomethylphosphonic acid (AMPA), and glufosinate after derivatization with 9-fluorenylmethyl chloroformate (FMOC-Cl) in various plant matrixes. The method also covers direct analysis of the glufosinate metabolites 3-methylphosphinicopropionic acid (3-MPPA) and N-acetyl-glufosinate (NAG). The homogenized samples were extracted with 0.1% formic acid in water-dichloromethane (50 + 50)...
March 23, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28299903/multifunctional-nanoparticle-composites-progress-in-the-use-of-soft-and-hard-nanoparticles-for-drug-delivery-and-imaging
#10
REVIEW
Ajmeeta Sangtani, Okhil K Nag, Lauren D Field, Joyce C Breger, James B Delehanty
With continued advancements in nanoparticle (NP) synthesis and in the interfacing of NPs with biological systems has come the exponential growth in the use of NPs for therapeutic drug delivery and imaging applications. In recent years, the advent of NP multifunctionality-the ability to perform multiple, disparate functions on a single NP platform-has garnered much excitement for the potential realization of highly functional NP-mediated drug delivery for use in the clinical setting. This Overview will survey the current state of the art (reports published within the last 5 years) of multifunctional NPs for therapeutic drug delivery, imaging or a combination thereof...
March 16, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28299504/evaluation-of-net-acid-generation-ph-as-a-single-indicator-for-acid-forming-potential-of-rocks-using-geochemical-properties
#11
Chamteut Oh, Sangwoo Ji, Giljae Yim, Youngwook Cheong
The main purpose of this research was to evaluate the geochemical properties of rocks for a single indicator of acid-forming potential. The indicators, such as net acid generation (NAG), NAG pH and total S, were applied to 312 rock samples of various geological characteristics. Additional indicators, such as a Modified NAG pH, paste pH and available acid neutralizing capacity (ANC), were applied to 22 selected samples. Among them, NAG pH was considered the most plausible single indicator in evaluating acid-forming potential, as it is simple to measure, widely applicable to various samples and can be used to estimate the NAG value...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28298816/effect-of-gallium-arsenic-laser-on-photosensitized-periodontopathic-anaerobic-organisms-an-in-vitro-study
#12
Setu Mathur, Shaila Veerappa Kothiwale, Buddhi Prakash Nag, Tanu Mathur, Ashoka Bhansali, Rohit Kumar Khatri
BACKGROUND: The mainstay of periodontal therapy is mechanical removal of subgingival plaque. There is considerable interest in supplementing it with the use of antibiotics and antiseptics. Many drawbacks are associated with these adjunctive pharmacological regimens such as development of resistance to antibiotics and disruption of microflora of the gastrointestinal tract. Hence, alternate means of killing subgingival bacteria are clearly desirable. One such method is the use of laser...
July 2016: Journal of Indian Society of Periodontology
https://www.readbyqxmd.com/read/28298792/comparison-of-king-vision-and-truview-laryngoscope-for-postextubation-visualization-of-vocal-cord-mobility-in-patients-undergoing-thyroid-and-major-neck-surgeries-a-randomized-clinical-trial
#13
Anto Sahaya Priyanka, Kusha Nag, V R Hemanth Kumar, Dewan Roshan Singh, Senthil Kumar, T Sivashanmugam
BACKGROUND: Visualization of vocal cords following extubation after thyroid and major neck surgeries is highly desirable for the surgeon as well as the anaesthesiologist to rule out vocal cord palsy or oedema. As the patient is emerging from general anaesthesia, it may be challenging for the anaesthesiologist to optimally visualise and grade vocal cord movement following extubation. SETTING: Randomized clinical trial at a tertiary care centre. METHODOLOGY: After obtaining institutional ethics committee approval, 60 patients posted for thyroid and major neck surgeries under American Society of Anesthesiologists (ASA) grade I and II were recruited for the study...
January 2017: Anesthesia, Essays and Researches
https://www.readbyqxmd.com/read/28298153/exploring-drug-dosing-regimens-in-vitro-using-real-time-3d-spheroid-tumor-growth-assays
#14
Madhu Lal-Nag, Lauren McGee, Steven A Titus, Kyle Brimacombe, Sam Michael, Gurusingham Sittampalam, Marc Ferrer
Two-dimensional monolayer cell proliferation assays for cancer drug discovery have made the implementation of large-scale screens feasible but only seem to reflect a simplified view that oncogenes or tumor suppressor genes are the genetic drivers of cancer cell proliferation. However, there is now increased evidence that the cellular and physiological context in which these oncogenic events occur play a key role in how they drive tumor growth in vivo and, therefore, in how tumors respond to drug treatments...
March 1, 2017: SLAS Discov
https://www.readbyqxmd.com/read/28289516/biochemical-changes-in-the-injured-brain
#15
EDITORIAL
Seelora Sahu, Deb Sanjay Nag, Amlan Swain, Devi Prasad Samaddar
Brain metabolism is an energy intensive phenomenon involving a wide spectrum of chemical intermediaries. Various injury states have a detrimental effect on the biochemical processes involved in the homeostatic and electrophysiological properties of the brain. The biochemical markers of brain injury are a recent addition in the armamentarium of neuro-clinicians and are being increasingly used in the routine management of neuro-pathological entities such as traumatic brain injury, stroke, subarachnoid haemorrhage and intracranial space occupying lesions...
February 26, 2017: World Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28287601/targeted-plasma-membrane-delivery-of-a-hydrophobic-cargo-encapsulated-in-a-liquid-crystal-nanoparticle-carrier
#16
Okhil K Nag, Jawad Naciri, Eunkeu Oh, Christopher M Spillmann, James B Delehanty
The controlled delivery of drug/imaging agents to cells is critical for the development of therapeutics and for the study of cellular signaling processes. Recently, nanoparticles (NPs) have shown significant promise in the development of such delivery systems. Here, a liquid crystal NP (LCNP)-based delivery system has been employed for the controlled delivery of a water-insoluble dye, 3,3'-dioctadecyloxacarbocyanine perchlorate (DiO), from within the NP core to the hydrophobic region of a plasma membrane bilayer...
February 8, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28286097/effect-of-the-periodic-properties-of-toxic-stress-on-the-oscillatory-behaviour-of-glycolysis-in-yeast-evidence-of-a-toxic-effect-frequency
#17
C André, F Gagné
Starving and nondividing yeast cells induce changes in the electron donor nicotinamide adenine dinucleotide (NADH) levels in a cyclic and wave-like manner for over 90min. Yeast suspensions were used to examine the toxic effects of contaminants on the cyclic behaviour of metabolite changes during anaerobic glycolysis. The cyclic behaviour NADH levels in yeast cell suspensions starved for 2 to 5h was studied after the addition of 10mM glucose for 5min followed by 10mM KCN to block aerobic glycolysis. The effects of three toxic elements (CuSO4, silver nanoparticles-nAg, and GdCl3), known for their potential to alter glycolsysis, on NADH levels over time were examined during the 3-h starvation step...
March 9, 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/28283406/transcriptomic-insights-into-genetic-diversity-of-protein-coding-genes-in-x-laevis
#18
Virginia Savova, Esther J Pearl, Elvan Boke, Anwesha Nag, Ivan Adzhubei, Marko E Horb, Leonid Peshkin
We characterize the genetic diversity of Xenopus laevis strains using RNA-seq data and allele-specific analysis. This data provides a catalogue of coding variation, which can be used for improving the genomic sequence, as well as for better sequence alignment, probe design, and proteomic analysis. In addition, we paint a broad picture of the genetic landscape of the species by functionally annotating different classes of mutations with a well-established prediction tool (PolyPhen-2). Further, we specifically compare the variation in the progeny of four crosses: inbred genomic (J)-strain, outbred albino (B)-strain, and two hybrid crosses of J and B strains...
March 7, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28280336/tumor-targeted-polymeric-nanostructured-lipid-carriers-with-precise-ratiometric-control-over-dual-drug-loading-for-combination-therapy-in-non-small-cell-lung-cancer
#19
Yan Liang, Baocheng Tian, Jing Zhang, Keke Li, Lele Wang, Jingtian Han, Zimei Wu
Gemcitabine (GEM) and paclitaxel (PTX) are effective combination anticancer agents against non-small-cell lung cancer (NSCLC). At the present time, a main challenge of combination treatment is the precision of control that will maximize the combined effects. Here, we report a novel method to load GEM (hydrophilic) and PTX (hydrophobic) into simplex tumor-targeted nanostructured lipid carriers (NLCs) for accurate control of the ratio of the two drugs. We covalently preconjugated the dual drugs through a hydrolyzable ester linker to form drug conjugates...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28277887/rnai-high-throughput-screening-of-single-and-multi-cell-type-tumor-spheroids-a-comprehensive-analysis-in-two-and-three-dimensions
#20
Jiaqi Fu, Daniel Fernandez, Marc Ferrer, Steven A Titus, Eugen Buehler, Madhu A Lal-Nag
The widespread use of two-dimensional (2D) monolayer cultures for high-throughput screening (HTS) to identify targets in drug discovery has led to attrition in the number of drug targets being validated. Solid tumors are complex, aberrantly growing microenvironments that harness structural components from stroma, nutrients fed through vasculature, and immunosuppressive factors. Increasing evidence of stromally-derived signaling broadens the complexity of our understanding of the tumor microenvironment while stressing the importance of developing better models that reflect these interactions...
March 1, 2017: SLAS Discov
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