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https://www.readbyqxmd.com/read/28097494/establishment-and-characterization-of-a-heart-derived-cell-line-from-goldfish-carassius-auratus
#1
Hongli Jing, Xiangmei Lin, Lipu Xu, Longying Gao, Min Zhang, Na Wang, Shaoqiang Wu
The goldfish Carassius auratus, a freshwater fish in the family Cyprinidae, was one of the earliest fish to be domesticated for ornamental purposes. A cell line was established from goldfish heart (GH) tissue to create a biological monitoring tool for viral diseases. The GH cell line was optimally maintained at 25 °C in M199 medium supplemented with 10-20% fetal bovine serum. A chromosomal analysis indicated that the cell line remained diploid, with a mean chromosomal count of 100. In viral inoculation assays, significant cytopathic effects (CPEs) were caused by epizootic hematopoietic necrosis virus (EHNV), Andrias davidianus iridovirus (ADIV), and Bohle iridovirus (BIV) infections in the fish cells and the viral titers (average value) of EHNV, ADIV, and BIV in GH cells reached 10(5...
January 18, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28092665/antibody-10-1074-suppresses-viremia-in-hiv-1-infected-individuals
#2
Marina Caskey, Till Schoofs, Henning Gruell, Allison Settler, Theodora Karagounis, Edward F Kreider, Ben Murrell, Nico Pfeifer, Lilian Nogueira, Thiago Y Oliveira, Gerald H Learn, Yehuda Z Cohen, Clara Lehmann, Daniel Gillor, Irina Shimeliovich, Cecilia Unson-O'Brien, Daniela Weiland, Alexander Robles, Tim Kümmerle, Christoph Wyen, Rebeka Levin, Maggi Witmer-Pack, Kemal Eren, Caroline Ignacio, Szilard Kiss, Anthony P West, Hugo Mouquet, Barry S Zingman, Roy M Gulick, Tibor Keler, Pamela J Bjorkman, Michael S Seaman, Beatrice H Hahn, Gerd Fätkenheuer, Sarah J Schlesinger, Michel C Nussenzweig, Florian Klein
Monoclonal antibody 10-1074 targets the V3 glycan supersite on the HIV-1 envelope (Env) protein. It is among the most potent anti-HIV-1 neutralizing antibodies isolated so far. Here we report on its safety and activity in 33 individuals who received a single intravenous infusion of the antibody. 10-1074 was well tolerated and had a half-life of 24.0 d in participants without HIV-1 infection and 12.8 d in individuals with HIV-1 infection. Thirteen individuals with viremia received the highest dose of 30 mg/kg 10-1074...
January 16, 2017: Nature Medicine
https://www.readbyqxmd.com/read/28091416/factors-associated-with-the-size-of-hiv-dna-reservoir
#3
REVIEW
Ni-Dan Wang, Tai-Sheng Li
OBJECTIVE: To review the recent literatures related to the factors associated with the size of the HIV reservoir and their clinical significance. DATA SOURCES: Literatures related to the size of HIV DNA was collected from PubMed published from 1999 to June 2016. STUDY SELECTION: All relevant articles on the HIV DNA and reservoir were collected and reviewed, with no limitation of study design. RESULTS: The composition and development of the HIV-1 DNA reservoir in either treated or untreated patients is determined by integrated mechanism comprising viral characteristics, immune system, and treatment strategies...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28091393/viral-blips-were-infrequent-in-treatment-naive-adults-treated-with-rilpivirine-emtricitabine-tenofovir-df-or-efavirenz-emtricitabine-tenofovir-df-through-96-weeks
#4
Danielle P Porter, Rima Kulkarni, Will Garner, Michael D Miller, Kirsten L White
BACKGROUND: The clinical impact of transient episodes of HIV viremia (viral blips) on virologic failure and resistance development is not fully understood. Here we investigated the blip frequency and virologic outcomes of HIV-1-infected subjects experiencing viral blips among treatment-naïve subjects initiating therapy on rilpivirine (RPV)/emtricitabine (FTC)/tenofovir disoproxil fumarate (TDF) or efavirenz (EFV)/FTC/TDF through 96 weeks of treatment. METHODS: Subjects treated with at least one dose of study drug and with at least one post-baseline HIV-1 RNA value were included in this analysis...
January 16, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28089555/epstein-barr-virus-and-renal-transplantation
#5
REVIEW
Jade Le, Christine M Durand, Irfan Agha, Daniel C Brennan
Epstein-Barr virus (EBV) is a gamma herpesvirus associated with diseases ranging from asymptomatic viremia to post-transplant malignancies in kidney transplant recipients. EBV specifically is associated with post-transplantation lymphoproliferative disorder (PTLD), in kidney transplant recipients, with increased risk in EBV seronegative patients with EBV seropositive donors on intensified immunosuppression. The diagnosis of PTLD relies on clinical suspicion plus tissue biopsy with polymerase chain reaction (PCR) testing of blood currently used for risk determination in high-risk recipients...
December 29, 2016: Transplantation Reviews
https://www.readbyqxmd.com/read/28073406/-prevention-of-mother-to-child-transmission-of-hepatitis-b-virus
#6
H Zhuang
Mother-to-child transmission (MTCT) is a major mode of hepatitis B virus (HBV) transmission, especially in high endemic areas. Administration of hepatitis B immunoglobulin (HBIG) and hepatitis B vaccine to infants at birth, followed by completion of the vaccine series, prevented approximately 95% of HBV transmission from HBsAg-positive mothers to their infants. However, immunoprophylaxis failure was still observed in 5~10% infants born to mothers with high levels of viremia. It was demonstrated that antiviral nucleot(s)ide analogues (NUCs) provided to pregnant women with high viral loads in late pregnancy further reduced MTCT...
December 20, 2016: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/28072954/-clinical-and-immunological-analysis-of-patients-with-activated-phosphoinositide-3-kinase-%C3%AE-syndrome-resulting-from-pik3cd-mutation
#7
W J Tang, W Wang, Y Luo, Y P Wang, L Li, Y F An, L J Gou, M S Ma, T Y He, J Yang, X D Zhao, H M Song
Objective: To explore the clinical and immunological features, gene mutations, treatment and prognosis in patients with activated phosphoinositide 3-kinase δ syndrome (APDS) caused by PIK3CD gene heterozygous germline mutation. Method: The data of clinical, immunological phenotype, treatment, and prognosis of 15 patients with APDS, who visited Children's Hospital of Chongqing Medical University, Peking Union Medical College Hospital, and Shenzhen Children's Hospital from June 2014 to November 2016, were collected and analyzed...
January 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28068342/neuropathogenesis-of-zika-virus-in-a-highly-susceptible-immunocompetent-mouse-model-after-antibody-blockade-of-type-i-interferon
#8
Darci R Smith, Bradley Hollidge, Sharon Daye, Xiankun Zeng, Candace Blancett, Kyle Kuszpit, Thomas Bocan, Jeff W Koehler, Susan Coyne, Tim Minogue, Tara Kenny, Xiaoli Chi, Soojin Yim, Lynn Miller, Connie Schmaljohn, Sina Bavari, Joseph W Golden
Animal models are needed to better understand the pathogenic mechanisms of Zika virus (ZIKV) and to evaluate candidate medical countermeasures. Adult mice infected with ZIKV develop a transient viremia, but do not demonstrate signs of morbidity or mortality. Mice deficient in type I or a combination of type I and type II interferon (IFN) responses are highly susceptible to ZIKV infection; however, the absence of a competent immune system limits their usefulness for studying medical countermeasures. Here we employ a murine model for ZIKV using wild-type C57BL/6 mice treated with an antibody to disrupt type I IFN signaling to study ZIKV pathogenesis...
January 9, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28063938/brincidofovir-for-asymptomatic-adenovirus-viremia-in-pediatric-and-adult-allogeneic-hematopoietic-cell-transplant-recipients-a-randomized-placebo-controlled-phase-ii-trial
#9
Michael S Grimley, Roy F Chemaly, Janet A Englund, Joanne Kurtzberg, Gregory Chittick, Thomas M Brundage, Andrew Bae, Marion E Morrison, Vinod K Prasad
Adenovirus infection in immunocompromised patients contributes to significant morbidity and mortality, especially after allogeneic hematopoietic cell transplantation (HCT). Brincidofovir (BCV, CMX001) is an orally bioavailable lipid conjugate of cidofovir that has in vitro activity against adenoviruses and other double-stranded DNA viruses. This randomized placebo-controlled phase II trial evaluated pre-emptive treatment with BCV for the prevention of adenovirus disease in pediatric and adult allogeneic HCT recipients with asymptomatic adenovirus viremia...
January 5, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28056062/antiviral-efficacy-and-host-immune-response-induction-during-sequential-treatment-with-sb-9200-followed-by-entecavir-in-woodchucks
#10
Manasa Suresh, Kyle E Korolowicz, Maria Balarezo, Radhakrishnan P Iyer, Seetharamaiyer Padmanabhan, Dillon Cleary, Rayomand Gimi, Anjaneyulu Sheri, Changsuek Yon, Bhaskar V Kallakury, Robin D Tucker, Nezam Afdhal, Stephan Menne
SB 9200, an orally bioavailable dinucleotide, activates the viral sensor proteins, retinoic acid-inducible gene 1 (RIG-I) and nucleotide-binding oligomerization domain-containing protein 2 (NOD2) causing the induction of the interferon (IFN) signaling cascade for antiviral defense. The present study evaluated the overall antiviral response in woodchucks upon induction of immune response, first with SB 9200 followed by Entecavir (ETV) versus reduction of viral burden with ETV followed by SB 9200 immunomodulation...
2017: PloS One
https://www.readbyqxmd.com/read/28053103/cytokines-elevated-in-hiv-elite-controllers-reduce-hiv-replication-in-vitro-and-modulate-hiv-restriction-factor-expression
#11
Evan S Jacobs, Sheila M Keating, Mohamed Abdel-Mohsen, Stuart L Gibb, John W Heitman, Heather C Inglis, Jeffrey N Martin, Jinbing Zhang, Zhanna Kaidarova, Xutao Deng, Shiquan Wu, Kathryn Anastos, Howard Crystal, Maria C Villacres, Mary Young, Ruth M Greenblatt, Alan L Landay, Stephen J Gange, Steven G Deeks, Elizabeth T Golub, Satish K Pillai, Philip J Norris
: A subset of HIV infected individuals termed elite controllers (ECs) maintain CD4+ T cell counts and control viral replication in the absence of antiretroviral therapy (ART). Systemic cytokine responses may differentiate ECs from subjects with uncontrolled viral replication or those who require ART to suppress viral replication. We measured 87 cytokines in four groups of women: 73 EC, 42 with pharmacologically suppressed viremia (ART), 42 with uncontrolled viral replication (noncontrollers, NC), and 48 HIV uninfected (NEG) subjects...
January 4, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28045891/susceptibility-and-antibody-response-of-the-laboratory-model-zebra-finch-taeniopygia-guttata-to-west-nile-virus
#12
Erik K Hofmeister, Melissa Lund, Valerie Shearn-Bochsler, Christopher N Balakrishnan
Since the introduction of West Nile virus (WNV) into North America in 1999 a number of passerine bird species have been found to play a role in the amplification of the virus. Arbovirus surveillance, observational studies and experimental studies have implicated passerine birds (songbirds, e.g., crows, American robins, house sparrows, and house finches) as significant reservoirs of WNV in North America, yet we lack a tractable passerine animal model for controlled studies of the virus. The zebra finch (Taeniopygia guttata) serves as a model system across a diversity of fields, and here we develop the zebra finch a songbird model for WNV...
2017: PloS One
https://www.readbyqxmd.com/read/28043030/potential-gingival-crevicular-fluid-and-serum-biomarkers-by-stage-of-hiv-infection
#13
Jesús Eduardo Elizondo, María Del Refugio Rocha-Pizaña, Ana Cecilia Treviño, Deborah Violant, Mario Moisés Álvarez, Ana María Rivas-Estilla
OBJECTIVE: This study evaluates the potential of gingival crevicular fluid and serum cytokines as HIV stage biomarkers. METHODS: Gingival crevicular fluid (GCF) and serum samples from 78 HIV-positive adult male subjects (cases) and 39 HIV-negative male subjects (controls) from Mexico were examined for 17 cytokines using multiplex ELISA. Participants were divided into five subgroups by HIV stage of infection on age-specific CD4+ T-lymphocyte count and antiretroviral therapy (ART), and further correlated to the cytokine levels...
December 30, 2016: Cytokine
https://www.readbyqxmd.com/read/28041834/the-hla-g-14-base-pair-deletion-allele-and-the-deletion-deletion-genotype-are-associated-with-persistent-hbe-antigenemia-in-chronic-hepatis-b-infection
#14
Sandro da Costa Ferreira, Silvana Gama Florêncio Chachá, Fernanda Fernandes Souza, Andreza Corrêa Teixeira, Rodrigo de Carvalho Santana, Neifi Hassan Saloun Deghaide, Sandra Rodrigues, Leonardo A Marano, Celso Teixeira Mendes-Junior, Leandra Naira Zambelli Ramalho, Sérgio Zucoloto, Eduardo Antônio Donadi, Ana de Lourdes Candolo Martinelli
BACKGROUND AND AIMS: HLA-G has well-recognized immunomodulatory properties, and this molecule is frequently expressed in the livers of hepatitis B virus (HBV)-infected patients. Because the HLA-G 14 bp-insertion/deletion polymorphism (rs371194629) has been associated with the magnitude of HLA-G expression, we evaluated this polymorphism in the recognized evolutionary forms of chronic HBV infection. METHODS: We studied 196 chronic HBV-infected patients (118 HBeAg-negative chronic hepatitis, 53 HBeAg-positive chronic hepatitis and 25 inactive carriers exhibiting low levels of serum HBVDNA and persistently normal ALT levels), and 202 healthy individuals...
December 29, 2016: Human Immunology
https://www.readbyqxmd.com/read/28039534/hypomagnesemia-and-increased-risk-of-new-onset-diabetes-mellitus-after-transplantation-in-pediatric-renal-transplant-recipients
#15
Wesley Hayes, Sheila Boyle, Adrian Carroll, Detlef Bockenhauer, Stephen D Marks
BACKGROUND: New-onset diabetes after transplantation (NODAT) is a significant co-morbidity following kidney transplantation. Lower post-transplant serum magnesium levels have been found to be an independent risk factor for NODAT in adult kidney transplant recipients. METHODS: We undertook a retrospective analysis of risk factors for NODAT in pediatric renal transplant recipients at our institution with the aim of determining if hypomagnesemia confers a significant risk of developing NODAT in this patient population...
December 30, 2016: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28039080/risk-factors-for-and-the-clinical-impact-of-cytomegalovirus-and-epstein-barr-virus-infections-in-pediatric-recipients-of-tcr-%C3%AE-%C3%AE-and-cd19-depleted-grafts
#16
Alexandra Laberko, Anna Bogoyavlenskaya, Larisa Shelikhova, Zhanna Shekhovtsova, Dmitriy Balashov, Kirill Voronin, Elena Kurnikova, Elena Boyakova, Elena Raykina, Varvara Brilliantova, Valentina Pirumova, Galina Novichkova, Alexei Maschan, Michael Maschan
Both α/β T cell and CD19 depletion are used to improve the outcomes of hematopoietic stem cell transplantation (HSCT). We evaluated the burden of cytomegalovirus (CMV) and Epstein-Barr virus (EBV) in pediatric patients after this HSCT type. A cohort of 182 patients with malignant (n = 114) or nonmalignant (n = 68) disorders was transplanted from either matched unrelated (n = 124) or haploidentical (n = 58) donors. The cumulative incidence of CMV and EBV viremia were 51% and 33%, respectively...
December 27, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28036372/collapse-of-cytolytic-potential-in-siv-specific-cd8-t-cells-following-acute-siv-infection-in-rhesus-macaques
#17
Emily R Roberts, Diane G Carnathan, Hui Li, George M Shaw, Guido Silvestri, Michael R Betts
Poor maintenance of cytotoxic factor expression among HIV-specific CD8+ T cells, in part caused by dysregulated expression of the transcription factor T-bet, is associated with HIV disease progression. However, the precise evolution and context in which CD8+ T cell cytotoxic functions become dysregulated in HIV infection remain unclear. Using the rhesus macaque (RM) SIV infection model, we evaluated the kinetics of SIV-specific CD8+ T cell cytolytic factor expression in peripheral blood, lymph node, spleen, and gut mucosa from early acute infection through chronic infection...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/28035197/evolving-new-strategies-for-the-medical-management-of-chronic-hepatitis-b-virus-infection
#18
Timothy M Block, Tianlun Zhou, Nikhil Anbarasan, Robert Gish
Is a cure for chronic hepatitis B virus (HBV) infection possible? Hepatitis C virus infection is now routinely cured medically. There is a growing expectation that new drugs for the management of chronic HBV infection should provide substantial benefit over and above that of current chronic HBV medications, if not be curative. Although the definition of medically induced cure for chronic HBV infection varies, most include sustained off-drug absence of viremia and negativity for other virologic markers. There are currently more than 29 drugs in the pipeline being tested for the management of chronic HBV infection...
November 2016: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28034883/an-evidence-based-algorithm-for-early-prognosis-of-severe-dengue-in-the-outpatient-setting
#19
Minh Tuan Nguyen, Thi Nhan Ho, Van Vinh Chau Nguyen, Thanh Hung Nguyen, Manh Tuan Ha, Van Tram Ta, Le Da Ha Nguyen, Loi Phan, Khoi Quang Han, Thi Hue Kien Duong, Nguyen Bich Chau Tran, Wills Bridget, Marcel Wolbers, Cameron P Simmons
BACKGROUND: Early prediction of severe dengue could significantly assist patient triage and case management METHODS: We prospectively investigated 7563 children with ≤3 days of fever recruited in the outpatient departments of six hospitals in southern Vietnam between 2010 and 2013. The primary endpoint of interest was severe dengue (2009 WHO Guidelines) and pre-defined risk variables were collected at the time of enrolment to enable prognostic model development. RESULTS: The analysis population comprised 7544 patients, of whom 2060 (27...
December 28, 2016: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28033725/untypeable-hepatitis-c-virus-subtypes-in-pakistan-a-neglected-section
#20
Abdul Waheed Khan, Zeeshan Nasim, Fazli Zahir, Shahid Ali, Abid Ali, Aqib Iqbal, Iqbal Munir
Diagnostically untypeable subtypes contribute a considerable percent of hepatitis C virus (HCV) subtypes in Pakistan. In the present study, chronically infected HCV patients with known viremia were subjected to HCV genotyping. Among the total retrieved samples, 92.7% (64/69) were found typeable while 7.24% (5/69) were diagnostically untypeable. In conclusion, the presence of large number of untypeable HCV subtypes emphasizes the need of an updated type-specific genotyping assay and consideration of primers for proportionally rare subtypes to minimize the number of untypeable HCV subtypes...
December 2016: Acta Microbiologica et Immunologica Hungarica
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