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https://www.readbyqxmd.com/read/28087817/t-cell-redeployment-and-intracellular-cytokine-expression-following-exercise-effects-of-exercise-intensity-and-cytomegalovirus-infection
#1
Emily C LaVoy, Maryam Hussain, Justin Reed, Hawley Kunz, Mira Pistillo, Austin B Bigley, Richard J Simpson
The magnitude of lymphocytosis following exercise is directly related to exercise intensity. Infection with cytomegalovirus (CMV) also augments lymphocytosis after exercise. It is not known if the enhanced T-cell response to exercise due to CMV depends on exercise intensity. Furthermore, exercise-induced changes in T-cell expression of type I and type II cytokines are thought to be intensity dependent, but direct comparisons are lacking. The aim of this experiment was to determine if CMV affects the exercise-induced redistribution of T-cell subsets at varying intensities, and determine the effect of exercise intensity on CD8(+) T-cell cytokine expression...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28079113/congenital-hearing-loss
#2
Anna M H Korver, Richard J H Smith, Guy Van Camp, Mark R Schleiss, Maria A K Bitner-Glindzicz, Lawrence R Lustig, Shin-Ichi Usami, An N Boudewyns
Congenital hearing loss (hearing loss that is present at birth) is one of the most prevalent chronic conditions in children. In the majority of developed countries, neonatal hearing screening programmes enable early detection; early intervention will prevent delays in speech and language development and has long-lasting beneficial effects on social and emotional development and quality of life. A diagnosis of hearing loss is usually followed by a search for an underlying aetiology. Congenital hearing loss might be attributed to environmental and prenatal factors, which prevail in low-income settings; congenital infections, particularly cytomegalovirus infection, are also a common risk factor for hearing loss...
January 12, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28077632/phyloepidemiological-analysis-reveals-that-viral-divergence-led-to-the-paucity-of-sivmus-gsn-mon-infections-in-wild-populations
#3
Fabian Schmidt, Florian Liegeois, Edward J D Greenwood, Matthew LeBreton, James Lester, Luc Deleplancque, Martine Peeters, Avelin Aghokeng, Ubald Tamoufe, Joseph L D Diffo, Jean M Takuo, Nathan D Wolfe, Eric Leroy, François Rouet, Jonathan L Heeney
: Human immunodeficiency virus subtype-1 (HIV-1) is the result of cross-species transmission of simian immunodeficiency virus from chimpanzees (SIVcpz). SIVcpz is a chimeric virus which shares common ancestors with viruses infecting red capped mangabeys and a subset of guenon species. The epidemiology of SIV infection in hominoids is characterized by low prevalence and uneven geographical distribution. Surveys in Cameroon indicated that two closely related members of the guenon species subset, mustached guenons and greater spot-nosed guenons, infected with SIVmus and SIVgsn respectively, have also low rates of SIV infections in their populations...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28073619/cytomegalovirus-serostatus-as-predictor-for-adverse-events-after-cardiac-surgery-a-prospective-observational-study
#4
Malte Ziemann, Matthias Heringlake, Philipp Lenor, David Juhl, Thorsten Hanke, Michael Petersen, Julika Schön, Hermann Heinze, Heinrich V Groesdonk, Hauke Paarmann, Holger Hennig
OBJECTIVE: To clarify whether reactivated cytomegalovirus (CMV) infections in critically ill patients lead to worse outcome or just identify more severely ill patients. If CMV has a pathogenic role, latently infected (CMV-seropositive) patients should have worse outcome than seronegative patients because only seropositive patients can experience a CMV reactivation. DESIGN: Post-hoc analysis of a prospective observational study. SETTING: Single university hospital...
October 20, 2016: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28060895/a-luciferase-gene-driven-by-an-alphaherpesviral-promoter-also-responds-to-immediate-early-antigens-of-the-betaherpesvirus-hcmv-allowing-comparative-analyses-of-different-human-herpesviruses-in-one-reporter-cell-line
#5
Anna Katharina Maier, Raimund Jung, Clarissa Villinger, Axel Schubert, Paul Walther, Christian Sinzger, Diana Lieber
Widely used methods for quantification of human cytomegalovirus (HCMV) infection in cell culture such as immunoblotting or plaque reduction assays are generally restricted to low throughput and require time-consuming evaluation. Up to now, only few HCMV reporter cell lines have been generated to overcome these restrictions and they are afflicted with other limitations because permanently expandable cell lines are normally not fully permissive to HCMV. In this work, a previously existing epithelial cell line hosting a luciferase gene under control of a Varicella-zoster virus promoter was adopted to investigate HCMV infection...
2017: PloS One
https://www.readbyqxmd.com/read/28056855/symptomatic-congenital-cytomegalovirus-disease-following-non-primary-maternal-infection-a-retrospective-cohort-study
#6
Eran Hadar, Elizabeta Dorfman, Ron Bardin, Rinat Gabbay-Benziv, Jacob Amir, Joseph Pardo
BACKGROUND: Scarce data exist about screening, diagnosis and prognosis of non-primary Cytomegalovirus (CMV) during pregnancy. We aimed to examine antenatal diagnosis of maternal non-primary CMV infection and to identify risk factors for congenial CMV disease. METHODS: Retrospective cohort of 107 neonates with congenital symptomatic CMV infection, following either primary (n = 95) or non-primary (n = 12) maternal CMV infection. We compared the groups for the manifestations and severity of congenial CMV disease, as well as for possible factors associated with the risk of developing CMV related infant morbidity...
January 5, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28055519/seroprevalence-of-cytomegalovirus-infection-among-a-rural-population-of-c%C3%A3-te-d-ivoire
#7
Augustin Etile Anoh, Arsène Mossoun, Chantal Akoua-Koffi, Emmanuel Couacy-Hymann, Maude Pauly, Siv-Aina Leendertz, Eliezer Kouakou N'goran, Grit Schubert, Sabrina Weiss, Jörg Hofmann, Fabian H Leendertz, Bernhard Ehlers
Human cytomegalovirus (HCMV) is a betaherpesvirus that can be pathogenic to humans. In particular, immunocompromised patients can develop life-threatening symptoms. In the present study, HCMV seroprevalence was investigated in a rural population of Western Côte d'Ivoire. Plasma samples collected from 166 apparently healthy subjects living in 8 villages surrounding the Taï Forest National Park were tested for anti-HCMV immunoglobulin G and M antibody with two commercial enzyme-linked immunosorbent assays. Prevalence of anti-HCMV IgG and IgM antibody was 100% and 5...
January 2017: Viral Immunology
https://www.readbyqxmd.com/read/28034524/maternal-immunoglobulin-g-avidity-as-a-diagnostic-tool-to-identify-pregnant-women-at-risk-of-congenital-cytomegalovirus-infection
#8
Masatoki Kaneko, Masanao Ohhashi, Toshio Minematsu, Junsuke Muraoka, Kazumi Kusumoto, Hiroshi Sameshima
BACKGROUND: The immunoglobulin (Ig) G avidity index (AI) is useful to detect primary cytomegalovirus (CMV) infection. However, because IgG matures with time, this index is not useful to detect a primary infection, unless measured at an appropriate time. OBJECTIVES: We aimed to clarify the difference between using IgG AI and IgM positivity according to the stage of pregnancy to identify congenital CMV infection risk. STUDY DESIGN: We collected the serum samples from 1115 pregnant women who underwent maternal screening for primary infection (n = 956) and were referred to our hospital because of CMV IgM positivity (n = 155) or had abnormal fetal ultrasonography findings (n = 4)...
December 26, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28032284/baseline-antibody-level-may-help-predict-the-risk-of-active-human-cytomegalovirus-infection-in-a-hcmv-seropositive-population
#9
T-D Li, J-J Li, X Huang, H Wang, X-Y Guo, S-X Ge, J Zhang
Recurrent human cytomegalovirus (HCMV) infection during pregnancy could lead to congenital HCMV infection and permanent sequelae. However, knowledge regarding the risk factors associated with recurrent HCMV infection is limited. In the present study, 1,659 paired serum samples from the natural population were collected in Guangxi Province, China, from 2003 to 2004 with a 1-year interval. The serum anti-pp150 titre was quantitatively determined using a homemade recombinant pp150-based ELISA, and the IgG titre that increased at least 4-fold was defined as a recurrent infection...
December 28, 2016: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28028680/establishment-of-mouse-leukemia-cell-lines-expressing-human-cd4-ccr5-using-lentiviral-vectors
#10
Ya-Jing Li, Fu-Yan ZhuGe, Chang-Chun Zeng, Jin-Yang He, Ning Tan, Juan Liang
A low-cost rodent model of HIV infection and which presents high application value is an effective tool to investigate HIV infection and pathogenesis. However, development of such a small animal model has been hampered by the unsuitability of rodent cells for HIV-1 replication given that the retrovirus HIV-1 has high selectivity to its host cell. Our study used the mouse leukemia cell lines L615 and L1210 that were induced by murine leukemia virus and transfected with hCD4/CCR5 loaded-lentiviral vector. Lentiviral vectors containing the genes hCD4/CCR5 under the transcriptional control of cytomegalovirus promoter were designed...
December 28, 2016: Virus Genes
https://www.readbyqxmd.com/read/28017761/tenofovir-alafenamide-demonstrates-broad-cross-genotype-activity-against-wild-type-hbv-clinical-isolates-and-maintains-susceptibility-to-drug-resistant-hbv-isolates-in%C3%A2-vitro
#11
Yang Liu, Michael D Miller, Kathryn M Kitrinos
Tenofovir alafenamide (TAF) is a novel prodrug of tenofovir (TFV). This study evaluated the antiviral activity of TAF against wild-type genotype A-H HBV clinical isolates as well as adefovir-resistant, lamivudine-resistant, and entecavir-resistant HBV isolates. Full length HBV genomes or the polymerase/reverse transcriptase (pol/RT) region from treatment-naïve patients infected with HBV genotypes A-H were amplified and cloned into an expression vector under the control of a CMV promoter. In addition, 11 drug resistant HBV constructs were created by site-directed mutagenesis of a full length genotype D construct...
December 23, 2016: Antiviral Research
https://www.readbyqxmd.com/read/28009139/neonatal-gastrointestinal-involvement-and-congenital-cytomegalovirus
#12
Alessandro Porta, Adriana Avanzini, Marta Bellini, Rosa Maria Crossignani, Stefano Fiocchi, Stefano Martinelli, Luciana Parola
Cytomegalovirus (CMV) is the most common cause of congenital viral infection, affecting 0.2 to 2.3% of all live births in developed countries. Very low birth weight and extremely low birth weight newborns are at higher risk of symptomatic CMV infection, most commonly secondary and acquired through breast milk. Gastrointestinal involvement is rare in acquired CMV infections, but it could be an important manifestation of postnatal infection in preterm infants admitted to neonatal intensive care units. Early onset of CMV gastrointestinal signs/symptoms is very rare...
November 28, 2016: La Pediatria Medica e Chirurgica: Medical and Surgical Pediatrics
https://www.readbyqxmd.com/read/28006975/positive-igm-in-congenital-cmv-infection
#13
Efraim Bilavsky, Salmas Watad, Itzhak Levy, Nehama Linder, Joseph Pardo, Haim Ben-Zvi, Joseph Attias, Jacob Amir
Neonatal serum detection of cytomegalovirus (CMV) immunoglobulin M (IgM) has low sensitivity in identifying congenital cytomegalovirus (cCMV). Several reports have endeavored to associate the presence/absence of IgM to disease severity. Data were collected for all infants with cCMV followed in our clinic. Infant outcome after birth was compared between infants who tested positive or negative. Sensitivity of positive IgM in diagnosing cCMV was 40.7%. The rate of symptomatic disease in those who tested positive was statistically higher (67...
December 1, 2016: Clinical Pediatrics
https://www.readbyqxmd.com/read/27994462/novel-guanidinylated-bioresponsive-poly-amidoamine-s-designed-for-short-hairpin-rna-delivery
#14
Jiankun Yu, Jinmin Zhang, Haonan Xing, Yanping Sun, Zhen Yang, Tianzhi Yang, Cuifang Cai, Xiaoyun Zhao, Li Yang, Pingtian Ding
Two different disulfide (SS)-containing poly(amidoamine) (PAA) polymers were constructed using guanidino (Gua)-containing monomers (ie, arginine [Arg] and agmatine [Agm]) and N,N'-cystamine bisacrylamide (CBA) by Michael-addition polymerization. In order to characterize these two Gua-SS-PAA polymers and investigate their potentials as short hairpin RNA (shRNA)-delivery carriers, pSilencer 4.1-CMV FANCF shRNA was chosen as a model plasmid DNA to form complexes with these two polymers. The Gua-SS-PAAs and plasmid DNA complexes were determined with particle sizes less than 90 nm and positive ζ-potentials under 20 mV at nucleic acid:polymer weight ratios lower than 1:24...
2016: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/27987334/echocardiography-findings-in-a-case-with-ballantyne-syndrome
#15
Yutaro Suzuki, Mie Yamamura, Keisuke Kikuchi, Rifumi Hattori, Takeshi Umazume, Hisanori Minakami
Marked fluid retention occurs in Ballantyne syndrome, but few reports are available on changes in cardiac morphology in this syndrome. A woman with generalized edema, dyspnea, fetal hydrops (skin edema and ascites), thickened placenta, and elevated plasma B-type natriuretic peptide level (344 pg/mL) was admitted to our hospital at gestational week (GW) 20(+3) . Blood pressure remained within the normal range. However, acute increases in left atrial volume index, pulmonary artery systolic pressure, and hyperdynamic left ventricular function (as evidenced by increased left ventricular ejection fraction to 74% with cardiac index of 5...
December 17, 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27984766/diagnostic-usefulness-of-dynamic-changes-of-cmv-specific-t-cell-responses-in-predicting-cmv-infections-in-hct-recipients
#16
Jiwon Jung, Hyun-Jung Lee, Sun-Mi Kim, Young-Ah Kang, Young-Shin Lee, Yong Pil Chong, Heungsup Sung, Sang-Oh Lee, Sang-Ho Choi, Yang Soo Kim, Jun Hee Woo, Jung-Hee Lee, Je-Hwan Lee, Kyoo-Hyung Lee, Sung-Han Kim
BACKGROUND: CMV-specific cell mediated immune responses before and after hematopoietic stem cell transplantation (HCT) can categorize patients as at high or low risk of CMV development. OBJECTIVES: We evaluated the usefulness of the CMV-specific T-cell ELISPOT assay for predicting the development of CMV infections after HCT in recipients with donor-positive and recipient-positive CMV serology (D+/R+ ). STUDY DESIGN: CMV pp65 and IE1-specific ELISPOT assays were performed before HCT (D0), and at 30 (D30) and 90 (D90) days after HCT...
November 30, 2016: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/27960397/nanotextured-surface-on-flexographic-printed-zno-thin-films-for-low-cost-non-faradaic-biosensors
#17
Abdulaziz K Assaifan, Jonathan S Lloyd, Siamak Samavat, Davide Deganello, Richard J Stanton, Kar Seng Teng
In this work, the formation of a nanotextured surface is reported on flexographic printed zinc oxide thin films which provide an excellent platform for low-cost, highly sensitive biosensing applications. The ability to produce nanotextured surfaces using a high-throughput, roll-to-roll production method directly from precursor ink without any complicated processes is commercially attractive for biosensors that are suitable for large-scale screening of diseases at low cost. The zinc oxide thin film was formed by printing a zinc acetate precursor ink solution and annealing at 300 °C...
December 14, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27956134/identification-of-compounds-with-anti-human-cytomegalovirus-activity-that-inhibit-production-of-ie2-proteins
#18
Rooksarr Beelontally, Gavin S Wilkie, Betty Lau, Charles J Goodmaker, Catherine M K Ho, Chad M Swanson, Xianming Deng, Jinhua Wang, Nathanael S Gray, Andrew J Davison, Blair L Strang
Using a high throughput screening methodology we surveyed a collection of largely uncharacterized validated or suspected kinase inhibitors for anti-human cytomegalovirus (HCMV) activity. From this screen we identified three structurally related 5-aminopyrazine compounds (XMD7-1, -2 and -27) that inhibited HCMV replication in virus yield reduction assays at low micromolar concentrations. Kinase selectivity assays indicated that each compound was a kinase inhibitor capable of inhibiting a range of cellular protein kinases...
February 2017: Antiviral Research
https://www.readbyqxmd.com/read/27934854/interactions-between-genetic-lifestyle-and-environmental-risk-factors-for-multiple-sclerosis
#19
REVIEW
Tomas Olsson, Lisa F Barcellos, Lars Alfredsson
Genetic predisposition to multiple sclerosis (MS) only explains a fraction of the disease risk; lifestyle and environmental factors are key contributors to the risk of MS. Importantly, these nongenetic factors can influence pathogenetic pathways, and some of them can be modified. Besides established MS-associated risk factors - high latitude, female sex, smoking, low vitamin D levels caused by insufficient sun exposure and/or dietary intake, and Epstein-Barr virus (EBV) infection - strong evidence now supports obesity during adolescence as a factor increasing MS risk...
January 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/27923951/maternal-antibody-responses-and-nonprimary-congenital-cytomegalovirus-infection-of-hiv-1-exposed-infants
#20
Kristy M Bialas, Daniel Westreich, Eduardo Cisneros de la Rosa, Cody S Nelson, Lawrence M Kauvar, Tong-Ming Fu, Sallie R Permar
Risk of congenital cytomegalovirus (cCMV) transmission is highly dependent on the presence of preexisting maternal immunity, with the lowest rates observed in CMV-seroimmune populations. Among infants of CMV-seroimmune women, those who are exposed to human immunodeficiency virus (HIV) have an increased risk of acquiring cCMV infection as compared to HIV-unexposed infants. To better understand the risk factors of nonprimary cCMV transmission in HIV-infected women, we performed a case-control study in which CMV-specific plasma antibody responses from 19 CMV-transmitting and 57 CMV-nontransmitting women with chronic CMV/HIV coinfection were evaluated for the ability to predict the risk of cCMV infection...
December 15, 2016: Journal of Infectious Diseases
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