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https://www.readbyqxmd.com/read/29026448/newborn-genome-wide-dna-methylation-in-association-with-pregnancy-anxiety-reveals-a-potential-role-for-gabbr1
#1
Elise Beau Vangeel, Ehsan Pishva, Titia Hompes, Daniel van den Hove, Diether Lambrechts, Karel Allegaert, Kathleen Freson, Benedetta Izzi, Stephan Claes
BACKGROUND: There is increasing evidence for the role of prenatal stress in shaping offspring DNA methylation and disease susceptibility. In the current study, we aimed to identify genes and pathways associated with pregnancy anxiety using a genome-wide DNA methylation approach. METHODS: We selected 22 versus 23 newborns from our Prenatal Early Life Stress (PELS) cohort, exposed to the lowest or highest degree of maternal pregnancy anxiety, respectively. Cord blood genome-wide DNA methylation was assayed using the HumanMethylation450 BeadChip (HM450, n = 45) and candidate gene methylation using EpiTYPER (n = 80)...
2017: Clinical Epigenetics
https://www.readbyqxmd.com/read/29021516/human-herpesvirus-8-unrelated-primary-effusion-lymphoma-like-lymphoma-following-tyrosine-kinase-inhibitor-treatment-for-chronic-myelogenous-leukemia
#2
Minoru Kojima, Naoya Nakamura, Jun Amaki, Hiroki Numata, Masashi Miyaoka, Tadashi Motoori, Koshi Matsumoto, Kiyoshi Ando
A 69-year-old man was diagnosed with chronic myelogenous leukemia (CML) and treated with dasatinib. After two years on dasatinib, the patient achieved complete molecular response, but dasatinib treatment was discontinued due to exacerbation of pleural effusion. Nilotinib and imatinib were started but stopped due to an increase in pleural effusion. Thoracentesis was performed and he was diagnosed with human herpesvirus 8-unrelated primary effusion lymphoma (PEL)-like lymphoma. Complex chromosomal abnormality, including BCL6 rearrangement, was found on chromosome analysis...
2017: Journal of Clinical and Experimental Hematopathology: JCEH
https://www.readbyqxmd.com/read/29019447/survival-of-patients-with-cd20-negative-variants-of-large-b-cell-lymphoma-an-analysis-of-the-national-cancer-data-base
#3
Lindor Qunaj, Jorge J Castillo, Adam J Olszewski
Using records from the National Cancer Data Base, we studied overall survival of CD20-negative variants of diffuse large B-cell lymphoma (DLBCL): primary effusion (PEL, N = 228), plasmablastic (PBL, N = 481), ALK-positive large B-cell (ALK + LBLC, N = 15), and human herpesvirus-8-positive DLBCL (HHV8 + DLBCL, N = 77). Three-year survival was 27% for PEL, 40% for PBL, 34% for ALK + LBCL, and 63% for HHV8 + DLBCL. Compared with unspecified DLBCL, and adjusting for clinical characteristics (including the HIV status), survival was significantly worse for PEL (hazard ratio [HR], 1...
October 11, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28982946/role-of-bronchodilation-and-pattern-of-breathing-in-increasing-expiratory-flow-during-progressive-hypercapnia-in-chronic-obstructive-pulmonary-disease
#4
Kevin E Finucane, Bhajan Singh
Hypercapnia (HC) in-vitro relaxes airway smooth muscle; in-vivo it increases respiratory effort, tidal expiratory flows (V'exp), and, by decreasing inspiratory duration (Ti), increases elastic recoil pressure (Pel) via lung visco-elasticity; however, its effect on airway resistance is uncertain. We examined the contributions of bronchodilation, Ti and expiratory effort to increasing V'exp ̇with progressive HC in 10 COPD subjects, mean FEV1 53% predicted. Lung volumes (Vl), V'exp, esophageal pressure (Pes), Ti and end tidal PCO2 (PetCO2) were measured during 6 tidal breaths followed by an inspiratory capacity (IC), breathing air and at 3 levels of HC...
October 5, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28976330/uptake-patterns-of-untreated-primary-gastrointestinal-extranodal-lymphomas-on-initial-staging-18-f-fdg-pet-ct-and-metabolic-tumor-parameters
#5
Engin Alagöz, Kürşat Okuyucu, Semra İnce, Murat Kantarcıoğlu, Şükrü Özaydın, Cumhur Heper, Türker Türker, Nuri Arslan
OBJECTIVE: Non-Hodgkin's lymphomas arising from tissues other than primary lymphatic sites are classified as primary extranodal lymphomas (PEL). PELs of the gastrointestinal system (PGISL) originate from the lymphatic tissues within the gastrointestinal tract. The prognostic value of (18)F-FDG PET/CT in lymphomas is high in terms of both overall survival (OS) and disease-free survival (DFS). Our aim was to investigate the uptake patterns and properties of low-grade and high-grade PGISL on primary staging (18)F-FDG PET/CT, as well as the prognostic significance of metabolic tumor parameters in high grade PGISL...
October 3, 2017: Molecular Imaging and Radionuclide Therapy
https://www.readbyqxmd.com/read/28972168/pela-and-pelb-form-a-modification-and-secretion-complex-essential-for-pel-polysaccharide-dependent-biofilm-formation-in-pseudomonas-aeruginosa
#6
Lindsey S Marmont, Gregory B Whitfield, Jacquelyn D Rich, Patrick Yip, Laura B Giesbrecht, Carol A Stremick, John C Whitney, Matthew R Parsek, Joe J Harrison, P Lynne Howell
The Pel polysaccharide (PEL) is synthesized by the opportunistic pathogen Pseudomonas aeruginosa and is an important biofilm constituent critical for bacterial virulence and persistence. PEL is a cationic polymer that promotes cell-cell interactions within the biofilm matrix through electrostatic interactions with extracellular DNA (eDNA). Translocation of PEL across the outer membrane is proposed to occur via PelB, a membrane-embedded porin with a large periplasmic domain predicted to contain 19 tetratricopeptide repeats (TPRs)...
September 27, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28970274/a-model-of-equine-endometritis-involving-a-pseudomonas-aeruginosa-biofilm
#7
Ryan A Ferris, Patrick M McCue, Grace I Borlee, Kristina E Glapa, Kevin H Martin, Mihnea R Mangalea, Margo L Hennet, Lisa M Wolfe, Corey D Broeckling, Bradley R Borlee
Bacteria in a biofilm community have increased tolerance to antimicrobial therapy. To characterize the role of biofilms in equine endometritis, six mares were inoculated with lux-engineered Pseudomonas aeruginosa strains isolated from equine uterine infections. Following establishment of infection, the horses were euthanized and the endometrial surfaces were imaged for luminescence to localize adherent lux-labeled bacteria. Samples from the endometrium were collected for cytology, histopathology, carbohydrate analysis, and expression of inflammatory cytokine genes...
October 2, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28964970/metformin-triggers-apoptosis-in-pel-cells-and-alters-bortezomib-induced-unfolded-protein-response-increasing-its-cytotoxicity-and-inhibiting-kshv-lytic-cycle-activation
#8
Marisa Granato, Maria Saveria Gilardini Montani, Maria Anele Romeo, Roberta Santarelli, Roberta Gonnella, Gabriella D'Orazi, Alberto Faggioni, Mara Cirone
Metformin, the most used drug for the treatment of diabetes type 2 patients, has been shown to have anti-cancer properties. In this study, we found that metformin induced apoptosis in Primary Effusion Lymphoma (PEL) cells, an aggressive B cell lymphoma associated with KSHV against which the conventional therapies usually fail. The cytotoxic effect of metformin correlated with intracellular reactive oxygen species reduction, activation of AMPK, the inhibition of pro-survival pathways such as mTOR and STAT3 and the down-regulation of v-FLIP, a latent viral antigen that also plays a pivotal role in PEL cell survival...
September 28, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28963501/1-25-oh-2-d3-induces-reactivation-and-death-of-kaposi-s-sarcoma-associated-herpesvirus-of-primary-effusion-lymphoma-cells
#9
Amit Kumar, Suchitra Mohanty, Piyanki Das, Sushil Kumar Sahu, Shanmugam Rajasubramaniam, Tathagata Choudhuri
Kaposi's sarcoma associated herpesvirus (KSHV) a gammaherpesvirus establishes perennial latency in the host with periodic reactivation. Occasionally change in the physiological condition like hypoxia, host cell differentiation can trigger the lytic switch and reactivation of the virus. The biologically active form of 1, 25(OH)2 D3 plays a critical role in the regulation of various physiological processes (e.g. regulation of mineral homeostasis and control of bone metabolism). Apart from its role in host physiology, 1, 25(OH)2 D3 has been implicated as a potential agent for the prevention and/or treatment of many a tumors...
September 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28953475/environmentally-friendly-cellulose-based-polyelectrolytes-in-wastewater-treatment
#10
Kinga Grenda, Julien Arnold, José A F Gamelas, Maria G Rasteiro
Natural-based polyelectrolytes (PELs), with all the advantages coming from being produced from renewable and biodegradable sources, are a potential solution for the removal of dyes from wastewater. In this work, surplus Eucalyptus bleached cellulose fibres from a paper mill were modified to increase the charge and solubility of cellulose. First, reactive aldehyde groups were introduced in the cellulose backbone by periodate oxidation of cellulose. Further modification with alkylammonium produced positively charged cellulose-based PELs...
September 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28939554/abc294640-a-novel-sphingosine-kinase-2-inhibitor-induces-oncogenic-virus-infected-cell-autophagic-death-and-represses-tumor-growth
#11
Lu Dai, Aiping Bai, Charles D Smith, Paulo C Rodriguez, Fangyou Yu, Zhiqiang Qin
Kaposi's Sarcoma-associated herpesvirus (KSHV) is the etiologic agent of several malignancies, including Kaposi's Sarcoma (KS) and primary effusion lymphoma (PEL), which preferentially arise in HIV+ patients and lack effective treatment. Sphingosine kinase 2 (SphK2) is a key factor within sphingolipid metabolism, responsible for the conversion of pro-apoptotic ceramides to anti-apoptotic sphingosine-1-phosphate (S1P). We have previously demonstrated that targeting SphK2 using a novel selective inhibitor, ABC294640, leads to the accumulation of intracellular ceramides and induces apoptosis in KSHV-infected primary endothelial cells and PEL tumor cells but not in uninfected cells...
September 22, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28931678/ikk%C3%AE-mimetic-peptides-block-the-resistance-to-apoptosis-associated-with-kshv-infection
#12
Louise C Briggs, A W Edith Chan, Christopher A Davis, Nicholas Whitelock, Hajira A Hotiana, Mehdi Baratchian, Claire Bagnéris, David L Selwood, Mary K Collins, Tracey E Barrett
Primary effusion lymphoma (PEL) is a lymphogenic disorder associated with KSHV infection. Key to the survival and proliferation of PEL is the canonical NF-kB pathway that becomes constitutively activated following overexpression of the viral oncoprotein ks-vFLIP. This arises from its capacity to form a complex with the modulatory subunit of the IKK kinase, IKKγ (or NEMO) resulting in the overproduction of proteins that promote cellular survival and prevent apoptosis; both of which are important drivers of tumourigenesis...
September 20, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28922425/hypoxia-inducible-factor-1-alpha-as-a-therapeutic-target-for-primary-effusion-lymphoma
#13
Prabha Shrestha, David A Davis, Ravindra P Veeranna, Robert F Carey, Coralie Viollet, Robert Yarchoan
Primary effusion lymphoma (PEL) is an aggressive B-cell lymphoma with poor prognosis caused by Kaposi's sarcoma-associated herpesvirus (KSHV). Previous studies have revealed that HIF-1α, which mediates much of the cellular response to hypoxia, plays an important role in life cycle of KSHV. KSHV infection promotes HIF-1α activity, and several KSHV genes are in turn activated by HIF-1α. In this study, we investigated the effects of knocking down HIF-1α in PELs. We observed that HIF-1α knockdown in each of two PEL lines leads to a reduction in both aerobic and anaerobic glycolysis as well as lipid biogenesis, indicating that HIF-1α is necessary for maintaining a metabolic state optimal for growth of PEL...
September 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28916317/presence-of-human-herpesvirus-8-hhv-8-dna-sequences-in-patients-with-lymphoproliferative-diseases-and-chronic-blood-disorders
#14
Hossein Keyvani, Mohammad Hadi Karbalaie Niya, Maryam Esghaei, Farah Bokharaei-Salim, Seyed Hamid Reza Monavari
OBJECTIVE: Human herpesvirus 8 (HHV-8) is the causative agent of Kaposi's sarcoma (KS), but it has also been associated with different hematologic malignancies, including plasmablastic lymphoma, Multicentric Castleman's disease (MCD), primary effusion lymphoma (PEL) and various atypical lymphoproliferative disorders. Patients with underlying lymphoproliferative diseases and chronic blood disorders who become infected with this virus are at risk for human malignancies. This small study reported the frequency of human herpesvirus 8 in 81 Iranian patients with lymphoproliferative disorders for estimation of possible factors affecting malignancy...
October 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28910300/acute-and-chronic-effects-of-treatment-with-mesenchymal-stromal-cells-on-lps-induced-pulmonary-inflammation-emphysema-and-atherosclerosis-development
#15
P Padmini S J Khedoe, Stan de Kleijn, Annemarie M van Oeveren-Rietdijk, Jaap J Plomp, Hetty C de Boer, Melissa van Pel, Patrick C N Rensen, Jimmy F P Berbée, Pieter S Hiemstra
BACKGROUND: COPD is a pulmonary disorder often accompanied by cardiovascular disease (CVD), and current treatment of this comorbidity is suboptimal. Systemic inflammation in COPD triggered by smoke and microbial exposure is suggested to link COPD and CVD. Mesenchymal stromal cells (MSC) possess anti-inflammatory capacities and MSC treatment is considered an attractive treatment option for various chronic inflammatory diseases. Therefore, we investigated the immunomodulatory properties of MSC in an acute and chronic model of lipopolysaccharide (LPS)-induced inflammation, emphysema and atherosclerosis development in APOE*3-Leiden (E3L) mice...
2017: PloS One
https://www.readbyqxmd.com/read/28895521/rhizobium-esperanzae-sp-nov-a-n2-fixing-root-symbiont-of-phaseolus-vulgaris-from-mexican-soils
#16
Andrey Barbosa Cordeiro, Renan Augusto Ribeiro, Luisa Caroline Ferraz Helene, Mariangela Hungria
Common bean (Phaseolus vulgaris L.) is the most important legume consumed worldwide; its genetic origins lie in the Mesoamerican (main centre) and Andean regions. It is promiscuous in establishing root-nodule symbioses; however, in the centres of origin/domestication, the predominant association is with Rhizobium etli. We have previously identified a new lineage (PEL-3) comprising three strains (CNPSo 661, CNPSo 666 and CNPSo 668T) isolated from root nodules of common bean in Mexico, and that have now been analysed in more detail...
September 12, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28881567/restoration-of-immune-surface-molecules-in-kaposi-sarcoma-associated-herpes-virus-infected-cells-by-lenalidomide-and-pomalidomide
#17
David A Davis, Suraj Mishra, Holda A Anagho, Ashley I Aisabor, Prabha Shrestha, Victoria Wang, Yuki Takamatsu, Kenji Maeda, Hiroaki Mitsuya, Jerome B Zeldis, Robert Yarchoan
Kaposi sarcoma-associated herpesvirus (KSHV) is the cause of several tumors, including Kaposi sarcoma and primary effusion lymphoma (PEL). Most viruses have evolved means of escaping immune recognition. KSHV downregulates MHC-I expression during lytic infection, and expression of ICAM-1 and B7-2 (CD86) during latent infection, allowing evasion of T cell and natural killer immunity respectively. These effects are largely mediated by two KSHV-encoded proteins, K3 and K5. We show here that lenalidomide (Len) and pomalidomide (Pom) prevent down-regulation of MHC-I during lytic activation, and restore ICAM-1 and B7-2 surface expression in latently infected PEL cells...
August 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28878084/human-herpesvirus-8-interleukin-6-interacts-with-calnexin-cycle-components-and-promotes-protein-folding
#18
Daming Chen, Qiwang Xiang, John Nicholas
Viral interleukin-6 (vIL-6) encoded by human herpesvirus 8 (HHV-8) is believed to contribute via mitogenic, survival, and angiogenic activities to HHV-8-associated Kaposi's sarcoma, primary effusion lymphoma (PEL), and multicentric Castleman's disease through autocrine or paracrine mechanisms during latency or productive replication. There is direct evidence that vIL-6 promotes latently infected PEL cell viability and proliferation and also viral productive replication in PEL and endothelial cells. These activities are mediated largely through endoplasmic reticulum (ER)-localized vIL-6, which can induce signal transduction via the gp130 signaling receptor, activating mitogen-activated protein kinase (MAPK) and signal transducer and activator of transcription (STAT) signaling, and interactions of vIL-6 with the ER membrane protein vitamin K epoxide reductase complex subunit 1 variant 2 (VKORC1v2)...
September 6, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28854249/deregulation-of-kshv-latency-conformation-by-er-stress-and-caspase-dependent-rad21-cleavage
#19
Alessandra De Leo, Horng-Shen Chen, Chih-Chi Andrew Hu, Paul M Lieberman
Kaposi's sarcoma (KS)-associated herpesvirus (KSHV) is a human gammaherpesvirus recognized as the principal causative agent of KS and primary effusion lymphoma (PEL). KSHV establishes persistent latent infection in B lymphocytes where viral gene expression is restricted, in part, by a cohesin-dependent chromosome conformation. Here, we show that endoplasmic reticulum (ER) stress induces a rapid, caspase-dependent cleavage of cohesin subunit RAD21. ER stress-induced cleavage of RAD21 correlated with a rapid and strong viral lytic transcriptional activation...
August 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28842655/the-water-kinetics-of-superabsorbent-polymers-during-cement-hydration-and-internal-curing-visualized-and-studied-by-nmr
#20
D Snoeck, L Pel, N De Belie
SuperAbsorbent Polymers (SAPs) can be applied as an admixture in cementitious materials. As the polymers are able to swell, they will absorb part of the mixing water and can then release that water back towards the cementitious matrix for internal curing. This is interesting in terms of autogenous shrinkage mitigation as the internal relative humidity is maintained. The mechanism is theoretically described by the Powers and Brownyard model, but the kinetics and water release still remain subject of detailed investigation...
August 25, 2017: Scientific Reports
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