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https://www.readbyqxmd.com/read/29471546/longitudinal-analyses-of-blood-transcriptome-during-conversion-to-psychosis
#1
Boris Chaumette, Oussama Kebir, Juliette Pouch, Bertrand Ducos, Fekrije Selimi, Raphael Gaillard, Marie-Odile Krebs
The biological processes associated with the onset of schizophrenia remain largely unknown. Current hypotheses favor gene × environment interactions as supported by our recent report about DNA methylation changes during the onset of psychosis. Here, we conducted the first longitudinal transcriptomic analysis of blood samples from 31 at-risk individuals who later converted to psychosis and 63 at-risk individuals who did not. Individuals were followed for a maximum of 1 year. Blood samples were collected at baseline and at the end of follow-up and individuals served as their own controls...
February 17, 2018: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/29471534/cypermethrin-promotes-lung-cancer-metastasis-via-modulation-of-macrophage-polarization-by-targeting-microrna-155-bcl6
#2
Fang Huang, Zhifeng Chen, Hanwen Chen, Wei Lu, Shujun Xie, Qing H Meng, Yihua Wu, Dajing Xia
Cypermethrin (CYM), a type II pyrethroid, is widely used as an insecticide for agriculture and household. Cumulative evidence indicates that acute and chronic exposure to CYM might cause a number of health problems, such as cancer and neuronal system diseases. However, the molecular mechanism underlying this pathology is not known. The main objective of our study was to define the effects of CYM on macrophages and the implication of such effects in cancer metastasis and the potential mechanism involved. The effects of CYM on the macrophages were evaluated by detecting the expression of M1 and M2 macrophage polarization markers through ELISA, quantitative RT-PCR and Western blot assay...
February 19, 2018: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29471523/liver-transcriptomic-and-plasma-metabolomic-profiles-of-fattening-lambs-are-modified-by-feed-restriction-during-the-suckling-period
#3
A Santos, F J Giráldez, E Trevisi, L Lucini, J Frutos, S Andrés
The increasing world population is driving demand for improved efficiency of feed resources of livestock. However, the molecular mechanisms behind various feed efficiency traits and their regulation by nutrition remain poorly understood. Here we aimed to identify differentially expressed (DE) genes in the liver tissues of fattening Merino lambs and differences in metabolites accumulated in plasma to identify modified metabolic pathways as a consequence of milk restriction during the suckling period. Twenty-four male Merino lambs (4...
February 19, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29471413/combined-cistrome-and-transcriptome-analysis-of-ski-in-aml-cells-identifies-ski-as-a-co-repressor-for-runx1
#4
Christine Feld, Peeyush Sahu, Miriam Frech, Florian Finkernagel, Andrea Nist, Thorsten Stiewe, Uta-Maria Bauer, Andreas Neubauer
SKI is a transcriptional co-regulator and overexpressed in various human tumors, for example in acute myeloid leukemia (AML). SKI contributes to the origin and maintenance of the leukemic phenotype. Here, we use ChIP-seq and RNA-seq analysis to identify the epigenetic alterations induced by SKI overexpression in AML cells. We show that approximately two thirds of differentially expressed genes are up-regulated upon SKI deletion, of which >40% harbor SKI binding sites in their proximity, primarily in enhancer regions...
February 20, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29471354/a-coliform-targeted-metagenomic-method-facilitating-human-exposure-estimates-to-escherichia-coli-borne-antibiotic-resistance-genes
#5
A F C Leonard, X L Yin, T Zhang, M Hui, W H Gaze
Background: Antimicrobial resistance and the spread of antibiotic resistance genes (ARGs) poses a threat to human health. Community-acquired infections resistant to treatment with first-line antibiotics are increasing, and there are few studies investigating environmental exposures and transmission. Aim: To develop a novel targeted metagenomic method to quantify the abundance and diversity of ARGs in a faecal indicator bacterium, and to estimate human exposure to resistant bacteria in a natural environment...
February 19, 2018: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/29471215/genetic-approaches-to-access-cell-types-in-mammalian-nervous-systems
#6
REVIEW
Miao He, Z Josh Huang
Understanding brain circuit organization and function requires systematic dissection of its cellular components. With vast cell number and diversity, mammalian nervous systems present a daunting challenge for achieving specific and comprehensive cell type access-prerequisite to circuit analysis. Genetic approaches in the mouse have relied on germline engineering to access marker-defined cell populations. Combinatorial strategies that engage marker intersection, anatomy and projection pattern (e.g. antero-grade and retro-grade viral vectors), and developmental lineage substantially increase the specificity of cell type targeting...
February 19, 2018: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29471137/mucosal-and-systemic-responses-of-immunogenic-vaccines-candidates-against-enteric-escherichia-coli-infections-in-ruminants-a-review
#7
REVIEW
A Lawan, F F A Jesse, U H Idris, M N Odhah, M Arsalan, N A Muhammad, K R Bhutto, Innocent Damudu Peter, G A Abraham, A H Wahid, M L Mohd-Azmi, M Zamri-Saad
Innumerable Escherichia coli of animal origin are identified, which are of economic significance, likewise, cattle, sheep and goats are the carrier of enterohaemorrhagic E. coli, which are less pathogenic, and can spread to people by way of direct contact and through the contamination of foodstuff or portable drinking water, causing serious illness. The immunization of ruminants has been carried out for ages and is largely acknowledged as the most economical and maintainable process of monitoring E. coli infection in ruminants...
February 19, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29471115/targeted-next-generation-sequencing-is-a-sensitive-tool-for-differential-diagnosis-of-myelodysplastic-syndromes-in-bone-marrow-trephines
#8
Andreas Bräuninger, Wolfgang Blau, Kristin Kunze, Ann-Kathrin Desch, Alexander Brobeil, Mehmet Kemal Tur, Benjamin Etschmann, Ulrich Günther, Dieter Körholz, Georg Schliesser, Andreas Käbisch, Michael Kiehl, Mathias Rummel, Stefan Gattenlöhner
Myelodysplastic syndromes are hematological neoplasias in which immunohistological examination of bone-marrow trephines is important for a definite diagnosis. Unequivocal distinction from reactive bone-marrow changes is, however, sometimes difficult. As neoplastic clones in myelodysplastic syndrome carry mutations in recurrent genes, mutation detection by targeted next-generation sequencing may be a useful support for differential diagnosis. To elucidate the accuracy of this approach in the clinical diagnostic setting, we analyzed single and consecutive bone-marrow trephines processed for immunohistological examination from 145 patients by targeted next-generation sequencing of 12 genes recurrently mutated in myelodysplastic syndromes...
February 19, 2018: Journal of Molecular Diagnostics: JMD
https://www.readbyqxmd.com/read/29471091/study-of-telomerase-reverse-transcriptase-and-uterine-ovarian-specific-genes-expression-in-the-endometrial-tissue-of-ovariectomized-female-sprague-dawley-rats
#9
Shadi Foroughi, Nasrin Ziamajidi, Saman Javid, Roghayeh Abbasalipourkabir, Reza Aflatoonian, Mahnaz Ashrafi, Alireza Nourian
BACKGROUND: An in vivo study was carried out to study of telomerase reverse transcriptase and Uterine-Ovarian-specific genes expression in the endometrial tissue of ovariectomized female Sprague-Dawley rats. MATERIAL AND METHODS: Twenty-four female Sprague-Dawley rats divided into 4 groups of six rats. The first and second groups were ovariectomized and given tamoxifen and tamoxifen-loaded SLN respectively for six days continuously. Group 3 served as the untreated ovariectomized control group and group 4 was made up of untreated normal healthy rats...
February 19, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29471014/epigenomic-drugs-and-the-germline-collateral-damage-in-the-home-of-heritability
#10
REVIEW
Patrick S Western
The testis and ovary provide specialised environments that nurture germ cells and facilitate their maturation, culminating in the production of mature gametes that can found the following generation. The sperm and egg not only transmit genetic information, but also epigenetic modifications that affect the development and physiology of offspring. Importantly, the epigenetic information contained in mature sperm and oocytes can be influenced by a range of environmental factors, such as diet, chemicals and drugs...
February 19, 2018: Molecular and Cellular Endocrinology
https://www.readbyqxmd.com/read/29471006/astilbin-ameliorates-cisplatin-induced-nephrotoxicity-through-reducing-oxidative-stress-and-inflammation
#11
Si-Wei Wang, Yi Xu, Yuan-Yuan Weng, Xue-Yu Fan, Yong-Feng Bai, Xiao-Yan Zheng, Li-Jun Lou, Feng Zhang
Oxidative stress and inflammation are considered to be the main pathogenesis of cisplatin nephrotoxicity. Astilbin, a flavonoid with anti-oxidation and anti-inflammation function, has been used to treat heavy metal induced kidney injury. In this study, we investigated the protective effects of astilbin on cisplatin-induced nephrotoxicity and its underlying mechanisms. Our results showed that astilbin markedly inhibited cisplatin-induced cell apoptosis and recovered cell growth. Astilbin significantly decreased reactive oxygen species (ROS) accumulation and alleviated ROS-induced activation of p53, MAPKs and AKT signaling cascades, which in turn attenuated cisplatin-induced HEK-293 cell apoptosis...
February 19, 2018: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29470956/metabolomic-insights-into-the-effects-of-thyroid-hormone-on-rana-lithobates-catesbeiana-metamorphosis-using-whole-body-matrix-assisted-laser-desorption-ionization-mass-spectrometry-imaging-maldi-msi
#12
Teesha C Luehr, Emily M Koide, Xiaodong Wang, Jun Han, Christoph H Borchers, Caren C Helbing
Anuran metamorphosis involves the transformation of an aquatic tadpole into a juvenile frog. This process is completely dependent upon thyroid hormones (THs). Although much research has been focused on changes in gene expression programs during this postembryonic developmental period, transitions in the metabolic profiles are relatively poorly understood. Matrix Assisted Laser Desorption/Ionization-Mass Spectrometry Imaging (MALDI-MSI) is a technique that generates highly multiplexed mass spectra while retaining spatial location information on a thin tissue section...
February 19, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29470858/genes-affecting-progression-of-bacteriophage-p22-infection-in-salmonella-identified-by-transposon-and-single-gene-deletion-screens
#13
Kaitlynne Bohm, Steffen Porwollik, Weiping Chu, John A Dover, Eddie B Gilcrease, Sherwood R Casjens, Michael McClelland, Kristin N Parent
Bacteriophages rely on their hosts for replication, and many host genes critically determine either viral progeny production or host success via phage resistance. A random insertion transposon library of 240,000 mutants in Salmonella enterica serovar Typhimurium was used to monitor effects of individual bacterial gene disruptions on bacteriophage P22 lytic infection. These experiments revealed candidate host genes that alter the timing of phage P22 propagation. Using a False Discovery Rate of <0.1, mutations in 235 host genes either blocked or delayed progression of P22 lytic infection, including many genes for which this role was previously unknown...
February 22, 2018: Molecular Microbiology
https://www.readbyqxmd.com/read/29470815/identification-of-mir-9-as-a-negative-factor-of-insulin-secretion-from-beta-cells
#14
Dongzhi Hu, Yi Wang, Haiyang Zhang, Dalu Kong
MicroRNA is a novel class of small noncoding RNA that has been implicated in a variety of physiological and pathological processes, including glucose homeostasis and diabetes mellitus. So far, a few studies have reported that miRNAs may be an important regulator in glucose-stimulated insulin secretion (GSIS) pathway. However, the role of miRNAs in this process remains unclear. The levels of miRNAs in mouse islets and MIN6 cells were determined by quantitative RT-PCR. Concentration of insulin was determined by ELISA, and the expression of the target protein was determined with western blot assay...
February 22, 2018: Journal of Physiology and Biochemistry
https://www.readbyqxmd.com/read/29470550/the-pregnane-x-receptor-pxr-and-the-nuclear-receptor-corepressor-2-ncor2-modulate-cell-growth-in-head-and-neck-squamous-cell-carcinoma
#15
Juan Pablo Rigalli, Matthias Reichel, Tasmin Reuter, Guillermo Nicolás Tocchetti, Gerhard Dyckhoff, Christel Herold-Mende, Dirk Theile, Johanna Weiss
Head and neck squamous cell carcinoma (HNSCC) is the sixth most frequent cancer worldwide. The pregnane X receptor (PXR) is a nuclear receptor regulating several target genes associated with cancer malignancy. We here demonstrated a significant effect of PXR on HNSCC cell growth, as evidenced in PXR knock-down experiments. PXR transcriptional activity is more importantly regulated by the presence of coactivators and corepressors than by PXR protein expression. To date, there is scarce information on the regulation of PXR in HNSCC and on its role in the pathogenesis of this disease...
2018: PloS One
https://www.readbyqxmd.com/read/29470520/association-between-expression-of-random-gene-sets-and-survival-is-evident-in-multiple-cancer-types-and-may-be-explained-by-sub-classification
#16
Yishai Shimoni
One of the goals of cancer research is to identify a set of genes that cause or control disease progression. However, although multiple such gene sets were published, these are usually in very poor agreement with each other, and very few of the genes proved to be functional therapeutic targets. Furthermore, recent findings from a breast cancer gene-expression cohort showed that sets of genes selected randomly can be used to predict survival with a much higher probability than expected. These results imply that many of the genes identified in breast cancer gene expression analysis may not be causal of cancer progression, even though they can still be highly predictive of prognosis...
February 22, 2018: PLoS Computational Biology
https://www.readbyqxmd.com/read/29470517/two-essential-thioredoxins-mediate-apicoplast-biogenesis-protein-import-and-gene-expression-in-toxoplasma-gondii
#17
Marco Biddau, Anne Bouchut, Jack Major, Tracy Saveria, Julie Tottey, Ojore Oka, Marcel van-Lith, Katherine Elizabeth Jennings, Jana Ovciarikova, Amy DeRocher, Boris Striepen, Ross Frederick Waller, Marilyn Parsons, Lilach Sheiner
Apicomplexan parasites are global killers, being the causative agents of diseases like toxoplasmosis and malaria. These parasites are known to be hypersensitive to redox imbalance, yet little is understood about the cellular roles of their various redox regulators. The apicoplast, an essential plastid organelle, is a verified apicomplexan drug target. Nuclear-encoded apicoplast proteins traffic through the ER and multiple apicoplast sub-compartments to their place of function. We propose that thioredoxins contribute to the control of protein trafficking and of protein function within these apicoplast compartments...
February 2018: PLoS Pathogens
https://www.readbyqxmd.com/read/29470430/metabolic-responses-in-endothelial-cells-following-exposure-to-ketone-bodies
#18
Erika Meroni, Nadia Papini, Franca Criscuoli, Maria C Casiraghi, Luca Massaccesi, Nicoletta Basilico, Daniela Erba
The ketogenic diet (KD) is a high-fat, low-carbohydrate diet based on the induction of the synthesis of ketone bodies (KB). Despite its widespread use, the systemic impact of KD is not completely understood. The purpose of this study was to evaluate the effects of physiological levels of KB on HMEC-1 endothelial cells. To this aim, DNA oxidative damage and the activation of Nrf2, a known transcriptional factor involved in cell responses to oxidative stress, were assessed. The exposure of cells to KB exerted a moderate genotoxic effect, measured by a significant increase in DNA oxidative damage...
February 22, 2018: Nutrients
https://www.readbyqxmd.com/read/29470146/towards-an-effective-peripheral-visceral-analgesic-responding-to-the-national-opioid-crisis
#19
Michael Camilleri
This is an editorial summarizing recent new developments in visceral analgesics. This promising field is important as a new approach to address abdominal pain with peripheral visceral analgesics is considered a key approach to addressing the current opioid crisis. Some of the novel compounds address peripheral pain mechanisms through modulation of opioid receptors through biased ligands, nociceptin/orphanin FQ opioid peptide (NOP) receptor or dual action on NOP and μ-opioid receptor, buprenorphine and morphiceptin analogs...
February 22, 2018: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/29470107/leptospira-genomospecies-and-sequence-type-prevalence-in-small-mammal-populations-in-germany
#20
Stefan Fischer, Anne Mayer-Scholl, Christian Imholt, Nastasja G Spierling, Elisa Heuser, Sabrina Schmidt, Daniela Reil, Ulrike M Rosenfeld, Jens Jacob, Karsten Nöckler, Rainer G Ulrich
Leptospirosis is a worldwide emerging infectious disease caused by zoonotic bacteria of the genus Leptospira. Numerous mammals, including domestic and companion animals, can be infected by Leptospira spp., but rodents and other small mammals are considered the main reservoir. The annual number of recorded human leptospirosis cases in Germany (2001-2016) was 25-166. Field fever outbreaks in strawberry pickers, due to infection with Leptospira kirschneri serovar Grippotyphosa, were reported in 2007 and 2014. To identify the most commonly occurring Leptospira genomospecies, sequence types (STs), and their small mammal host specificity, a monitoring study was performed during 2010-2014 in four federal states of Germany...
February 22, 2018: Vector Borne and Zoonotic Diseases
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