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https://www.readbyqxmd.com/read/28433994/the-chs4-chromatin-insulator-reduces-the-rate-of-retroviral-vector-mediated-gene-dysregulation-associated-with-aberrant-vector-transcription
#1
Xianyao Zhou, Qiujun Liu, Da Wang, Xuemei Zhang, David W Emery, Chang L Li
Integrating gammaretroviral vectors can dysregulate the expression of cellular genes through a variety of mechanisms, leading to genotoxicity and malignant transformation. Although most attention has focused on the activation of cellular genes by vector enhancers, aberrant fusion transcripts involving cellular gene sequences and vector promoters, vector splice elements, and vector transcription termination sequences have also been mechanistically associated with dysregulated expression of cellular genes. Chromatin insulators have emerged as an effective tool for reducing the frequency of vector-mediated genotoxicity and malignant transformation and have been shown to block the activation of cellular genes by vector enhancers...
April 22, 2017: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28433925/low-dose-pollutant-mixture-triggers-metabolic-disturbances-in-female-mice-leading-to-common-and-specific-features-as-compared-to-a-high-fat-diet
#2
Emmanuel Labaronne, Claudie Pinteur, Nathalie Vega, Sandra Pesenti, Benoit Julien, Emmanuelle Meugnier-Fouilloux, Hubert Vidal, Danielle Naville, Brigitte Le Magueresse-Battistoni
Environmental pollutants are potential etiologic factors of obesity and diabetes that reach epidemic proportions worldwide. However, it is important to determine if pollutants could exert metabolic defects without directly inducing obesity. The metabolic disturbances triggered in nonobese mice lifelong exposed to a mixture of low-dose pollutants (2,3,7,8-tetrachlorodibenzo-p-dioxine, polychlorinated biphenyl 153, diethylhexyl-phthalate, and bisphenol A) were compared with changes provoked by a high-fat high-sucrose (HFHS) diet not containing the pollutant mixture...
April 8, 2017: Journal of Nutritional Biochemistry
https://www.readbyqxmd.com/read/28433817/climate-change-risks-extinction-debt-and-conservation-implications-for-a-threatened-freshwater-fish-carmine-shiner-notropis-percobromus
#3
Shubha N Pandit, Bryan M Maitland, Laxmi K Pandit, Mark S Poesch, Eva C Enders
Climate change is affecting many freshwater species, particularly fishes. Predictions of future climate change suggest large and deleterious effects on species with narrow dispersal abilities due to limited hydrological connectivity. In turn, this creates the potential for population isolation in thermally unsuitable habitats, leading to physiological stress, species declines or possible extirpation. The current extent of many freshwater fish species' spatio-temporal distribution patterns and their sensitivity to thermal impacts from climate change - critical information for conservation planning - are often unknown...
April 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28433806/polymorphism-of-cyp1a1-gene-variants-rs4646903-and-rs1048943-relation-to-the-incidence-of-cervical-cancer-in-chhattisgarh
#4
Vijaylakshmi Jain, Yashwant K Ratre, Dnyanesh Amle, Pankaj K Mishra, Pradeep K Patra
Cytochrome P450 CYP1A1 is a phase 1 xenobiotic metabolizing enzyme involved in the metabolism of toxins, endogenous hormones and pharmaceutical drugs. It is therefore possible that polymorphism of CYP1A1 gene producing functional changes in the enzyme may be susceptible factors in cervical carcinogenesis. This study was aimed to look association of CYP1A1m1 (T>C) and m2 (A>G) gene polymorphisms in Chhattisgarh population. In this case-control study, we analyzed leukocyte DNA from a total of 200 subjects form Chhattisgarh (100 cases and 100 controls)...
April 13, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28433802/role-of-environmental-stressors-in-determining-the-developmental-outcome-of-neonatal-anesthesia
#5
Ling-Sha Ju, Jiao-Jiao Yang, Nikolaus Gravenstein, Christoph N Seubert, Timothy E Morey, Colin Sumners, Terrie Vasilopoulos, Jian-Jun Yang, Anatoly E Martynyuk
BACKGROUND: The majority of studies evaluating neurocognition in humans who had procedures under anesthesia early in life found long-term deficits even though the typical anesthesia duration normalized to the human life span is much shorter than that shown to induce developmental abnormalities in rodents. Therefore, we studied whether subsequent environmental stressors contribute to deficiencies programmed by a brief neonatal etomidate exposure. METHODS: Postnatal days (P) 4, 5, or 6, Sprague-Dawley rats, pretreated with vehicle or the Na(+)-K(+)-2Cl(-) (NKCC1) inhibitor, bumetanide, received two injections of etomidate resulting in anesthesia for 2h...
April 7, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28433788/regulation-of-human-nucleus-pulposus-cells-by-peptide-coupled-substrates
#6
Devin T Bridgen, Bailey V Fearing, Liufang Jing, Johannah Sanchez-Adams, Megan C Cohan, Farshid Guilak, Jun Chen, Lori A Setton
Nucleus pulposus (NP) cells are derived from the notochord and differ from neighboring cells of the intervertebral disc in phenotypic marker expression and morphology. Adult human NP cells lose this phenotype and morphology with age in a pattern that contributes to progressive disc degeneration and pathology. Select laminin-mimetic peptide ligands and substrate stiffnesses were examined for their ability to regulate human NP cell phenotype and biosynthesis through the expression of NP-specific markers aggrecan, N-cadherin, collagen types I and II, and GLUT1...
April 19, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28433657/mir-938-promotes-colorectal-cancer-cell-proliferation-via-targeting-tumor-suppressor-phlpp2
#7
Chang-Feng Li, Yong-Chao Li, Jing-Peng Jin, Zhen-Kun Yan, Dan-Dan Li
Colorectal cancer (CRC) is one of the leading causes of cancer-related deaths worldwide. Although the development of therapy approaches, the outcome of CRC patients still is poor, understanding the biological mechanism of CRC progression is critical to improve the treatment strategies. miRNAs regulate CRC progression, we found miR-938 was upregulated in CRC tissues and cells, MTT assay, colony formation assay and soft agar growth assay suggested miR-938 overexpression promoted CRC cell proliferation, miR-938 knockdown inhibited CRC cell proliferation...
April 19, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28433652/ketamine-potentiates-oxidative-stress-and-influences-behaviour-and-inflammation-in-response-to-lipolysaccharide-lps-exposure-in-early-life
#8
Gislaine Z Réus, Lutiana R Simões, Gabriela D Colpo, Giselli Scaini, Jean P Oses, Jaqueline S Generoso, Alan R Prossin, Rima Kaddurah-Daouk, João Quevedo, Tatiana Barichello
Immune activation (IA) during the early neonatal period is a risk factor for the development of schizophrenia. Lipopolysaccharide (LPS) injected in neonates lead to behavioral and brain changes that persist to adult life. We investigated oxidative stress, levels of cytokines, and the locomotor activity of IA in a schizophrenia animal model in which neonatal male Wistar rats were administered with an injection of LPS (50 μg/kg) on postnatal day 3 and different doses of ketamine (5, 15 and 25 mg/kg) for 7 days during adulthood...
April 19, 2017: Neuroscience
https://www.readbyqxmd.com/read/28433644/supraspinal-respiratory-plasticity-following-acute-cervical-spinal-cord-injury
#9
Tatiana Bezdudnaya, Vitaliy Marchenko, Lyandysha V Zholudeva, Victoria M Spruance, Michael A Lane
Impaired breathing is a devastating result of high cervical spinal cord injuries (SCI) due to partial or full denervation of phrenic motoneurons, which innervate the diaphragm - a primary muscle of respiration. Consequently, people with cervical level injuries often become dependent on assisted ventilation and are susceptible to secondary complications. However, there is mounting evidence for limited spontaneous recovery of respiratory function following injury, demonstrating the neuroplastic potential of respiratory networks...
April 19, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28433638/metabolomic-analysis-for-combined-hepatotoxicity-of-chlorpyrifos-and-cadmium-in-rats
#10
Ming-Yuan Xu, Pan Wang, Ying-Jian Sun, Yi-Jun Wu
Pesticides and heavy metals are widespread environmental pollutants. Although the acute toxicity of organophosphorus pesticide chlorpyrifos (CPF) and toxic heavy metal cadmium (Cd) is well characterized, the combined toxicity of CPF and Cd, especially the hepatotoxicity of the two chemicals with long-term exposure at a low dose, remained unclear. In this study, we investigated the toxicity in the liver of rats upon subchronic exposure to CPF and Cd at environmentally relevant doses. Rats were given three different doses (1/135 LD50, 1/45 LD50 and 1/15 LD50) of CPF and Cd as well as their mixtures by oral gavage for 90 days...
April 19, 2017: Toxicology
https://www.readbyqxmd.com/read/28433534/effect-of-surface-energy-of-solid-surfaces-on-the-micro-and-macroscopic-properties-of-adsorbed-bsa-and-lysozyme
#11
Indu Sharma, Sudip K Pattanayek
The surface energy, a macroscopic property, depends on the chemical functionality and micro- and macroscopic roughness of the surface. The adsorption of two widely used proteins bovine serum albumin (BSA) and lysozyme on surfaces of four different chemical functionalities were done to find out the interrelation between macroscopic and microscopic properties. We have observed the secondary structure of protein after its adsorption. In addition, we observed the variation of surface energy of proteins due to variation in adsorption time, change in protein concentration and effect of a mixture of proteins...
April 1, 2017: Biophysical Chemistry
https://www.readbyqxmd.com/read/28433506/heifers-express-g-protein-coupled-receptor-61-in-anterior-pituitary-gonadotrophs-in-stage-dependent-manner
#12
Kiran Pandey, Onalenna Kereilwe, Vitaliano Borromeo, Hiroya Kadokawa
Gonadotropin-releasing hormone receptors (GnRHRs) colocalize with insulin and glucocorticoid receptors in lipid rafts of the gonadotroph plasma membrane, where they facilitate downstream signaling. We recently found that orphan G-protein-coupled receptor (GPR)61 is expressed in the anterior pituitary (AP) of heifers, leading us to speculate that GPR61 colocalizes with GnRHR in the plasma membrane of gonadotroph and is expressed at specific times of the reproductive cycle. To test this hypothesis, we examined the coexpression of GnRHR, GPR61, and either luteinizing hormone (LH) β subunit or follicle-stimulating hormone (FSH) β subunit in AP tissue and cultured AP cells by immunofluorescence microscopy...
April 4, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28433498/long-term-effectiveness-of-aripiprazole-once-monthly-for-schizophrenia-is-maintained-in-the-qualify-extension-study
#13
Dieter Naber, Ross A Baker, Anna Eramo, Carlos Forray, Karina Hansen, Christophe Sapin, Timothy Peters-Strickland, Anna-Greta Nylander, Peter Hertel, Simon Nitschky Schmidt, Jean-Yves Loze, Steven G Potkin
OBJECTIVE: To evaluate long-term safety and effectiveness of continued treatment with aripiprazole once-monthly 400mg (AOM 400) in patients with schizophrenia. METHODS: Patients who completed the QUALIFY study (NCT01795547) in the AOM 400 arm were eligible for 6 additional once-monthly injections of AOM 400 during an open-label, 24-week extension (NCT01959035). Safety data were collected at each visit. Effectiveness measures included change from baseline in health-related qualify of life and functioning on the Heinrichs-Carpenter Quality of Life scale (QLS) and Clinical Global Impression - Severity (CGI-S) scale...
April 19, 2017: Schizophrenia Research
https://www.readbyqxmd.com/read/28433477/novel-mutations-in-the-c-terminal-region-of-gmppb-causing-limb-girdle-muscular-dystrophy-overlapping-with-congenital-myasthenic-syndrome
#14
Sushan Luo, Shuang Cai, Susan Maxwell, Dongyue Yue, Wenhua Zhu, Kai Qiao, Zhen Zhu, Lei Zhou, Jianying Xi, Jiahong Lu, David Beeson, Chongbo Zhao
Mutations in the GMPPB gene may underlie both limb girdle muscular dystrophy (LGMD) and congenital myasthenic syndrome (CMS). Forty-one cases have been reported to date and hotspot mutations are emerging in the Caucasian population. Clinical and pathological features of 5 patients with compound heterozygous GMPPB mutations were collected and retrospectively reviewed. In vitro functional analysis was performed to investigate the pathogeneity of GMPPB variants. The patients presented with proximal limb weakness in their first to second decades...
March 10, 2017: Neuromuscular Disorders: NMD
https://www.readbyqxmd.com/read/28433467/modeling-hypohedonia-following-repeated-social-defeat-individual-vulnerability-and-dopaminergic-involvement
#15
Samantha R Spierling, Maegan Mattock, Eric P Zorrilla
Social defeat in rodents putatively can model hypohedonia. The present studies examined models for assessing hypohedonia-like behavior and tested the hypotheses that 1) individual differences in baseline reward sensitivity predict vulnerability, and 2) defeat elicits changes in pharmacological measures of striatal dopaminergic function. Male Wistar rats (n=142) received repeated defeat (3 "triad" blocks of 3 defeats) or control handling. To determine whether defeat influenced consumption of SuperSac (glucose-saccharin) over an isocaloric, less preferred, glucose solution, a 2-choice paradigm was used...
April 19, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28433348/the-influence-of-polyethylene-bearing-thickness-on-the-tibiofemoral-kinematics-of-a-bicruciate-retaining-total-knee-arthroplasty
#16
Geert Peersman, Josh Slane, Margo Dirckx, Arne Vandevyver, Philipp Dworschak, Thomas J Heyse, Lennart Scheys
BACKGROUND: The recently reintroduced bicruciate retaining Total Knee Arthroplasty (BCR TKA) is an effort to reproduce kinematics closer to the native knee. However, there is no data on appropriate balancing with this implant. Balancing is crucial and challenging as medial and lateral polyethylene (PE) inlays are modular, which allows for placement of different thicknesses in the medial and lateral compartments. This study aimed at providing a detailed kinematic view on balancing BCR TKA...
April 19, 2017: Knee
https://www.readbyqxmd.com/read/28433260/future-and-potential-spending-on-health-2015-40-development-assistance-for-health-and-government-prepaid-private-and-out-of-pocket-health-spending-in-184-countries
#17
(no author information available yet)
BACKGROUND: The amount of resources, particularly prepaid resources, available for health can affect access to health care and health outcomes. Although health spending tends to increase with economic development, tremendous variation exists among health financing systems. Estimates of future spending can be beneficial for policy makers and planners, and can identify financing gaps. In this study, we estimate future gross domestic product (GDP), all-sector government spending, and health spending disaggregated by source, and we compare expected future spending to potential future spending...
April 19, 2017: Lancet
https://www.readbyqxmd.com/read/28433099/other-organ-involvement-and-clinical-aspects-of-wilson-disease
#18
Karolina Dzieżyc, Tomasz Litwin, Anna Członkowska
Wilson disease (WD) is a rare disorder of copper metabolism that presents mainly with hepatic and neuropsychiatric features. Copper accumulates not only in the liver and brain, but also in other organs. Liver injury can also be the cause of secondary impairment of other tissues. Therefore, the clinical manifestation of WD may be renal, cardiac, skin, osteoarticular, or endocrinologic and include other organ disturbances. Renal abnormalities include tubular dysfunction (e.g., renal tubular acidosis, aminoaciduria) and nephrolithiasis...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28433079/utilization-of-whole-exome-next-generation-sequencing-variant-read-frequency-for-detection-of-lesion-specific-somatic-loss-of-heterozygosity-in-a-neurofibromatosis-type-1-cohort-with-tibial-pseudarthrosis
#19
Rebecca L Margraf, Chad VanSant-Webb, David Sant, John Carey, Heather Hanson, Jacques D'Astous, Dave Viskochil, David A Stevenson, Rong Mao
A subset of neurofibromatosis type 1 patients develop tibial dysplasia, which can lead to pseudarthrosis. The tissue from the tibial pseudarthrosis region commonly has a somatic second hit in NF1: single-nucleotide variants, small deletions, or loss of heterozygosity (LOH). We used exome next-generation sequencing (NGS) variant frequency data (allelic imbalance analysis) to detect somatic LOH in pseudarthrosis tissue from three individuals with clinically and diagnostically confirmed neurofibromatosis type 1, and verified the results with microarray...
May 2017: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/28433002/changes-in-microstructure-of-two-ammonium-based-protic-ionic-liquids-proved-by-in-situ-variable-temperature-1-h-nmr-spectroscopy-influence-of-anion
#20
Xiaochen Tang, Yingjie Xu, Xiao Zhu, Yueqing Lu
In this work, changes in microstructure of two protic ionic liquids (PILs), namely n-butylammonium acetate (N4Ac) and n-butylammonium nitrate (N4NO3 ) are proved by in situ variable-temperature (1) H NMR spectroscopy at the temperature range from 25 °C to 115 °C, and the influence of the nature of anion is discussed accordingly. The results demonstrate that (1) H NMR chemical shifts of alkyl protons of both N4Ac and N4NO3 are almost not changed with the increasing of temperature, due to the absence of hydrogen bond interaction between alkyl protons with anions...
April 22, 2017: Magnetic Resonance in Chemistry: MRC
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