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Interferon-alpha

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https://www.readbyqxmd.com/read/29150375/type-i-interferon-and-proinflammatory-cytokine-levels-in-cerebrospinal-fluid-of-newborns-with-rotavirus-associated-leukoencephalopathy
#1
Kyung Yeon Lee, Chang Hoon Moon, Seong Hoon Choi
OBJECTIVE: The purpose of this study was to identify whether there is an increase in type I interferon and proinflammatory cytokine levels in the cerebrospinal fluid of newborns with rotavirus-associated leukoencephalopathy. METHODS: Levels of type I interferons (interferon-alpha and interferon-beta) and proinflammatory cytokines (interleukin-6 and interferon-gamma) were measured in the cerebrospinal fluid of 23 newborns with rotavirus-associated leukoencephalopathy (patient group) and 39 infants under 90 days-of-age (control group)...
November 14, 2017: Brain & Development
https://www.readbyqxmd.com/read/29142571/in-vitro-transcription-analysis-of-ns5a-from-hcv-3a-circulating-in-pakistani-patients-with-chronic-hepatitis-c-and-their-differential-response-to-antiviral-therapy
#2
Shameem Bhatti, Sobia Manzoor, Fahed Parvaiz, Javed Ashraf, Farakh Javed
Objective: Mutations in HCV nonstructural protein 5A (NS5A) play a vital role in virus resistance. The aim of this study was to develop a correlation between NS5A mutations (genotype 3a) and virological response towards interferon alpha (IFN-α) plus ribavirin therapy. Methods: In this study, which was conducted from 09-02-2013 to 25-11-2015 in the rural area of Province Sindh - Pakistan, total patients' responses to peg-IFN therapy were investigated. Patients were given peg-IFN therapy for 24 to 48 weeks and categorized as sustained virologic responders (SVR) or non-responders (NR) to HCV infection...
September 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29142236/circulating-mir-210-and-mir-22-combined-with-alt-predict-the-virological-response-to-interferon-alpha-therapy-of-chb-patients
#3
Jin Li, Xiaonan Zhang, Liang Chen, Zhanqing Zhang, Jiming Zhang, Weixia Wang, Min Wu, Bisheng Shi, Xinxin Zhang, Maya Kozlowski, Yunwen Hu, Zhenghong Yuan
Interferon-alpha (IFN-α) therapy of chronic hepatitis B (CHB) patients is constrained by limited response and side effects. We described a panel of circulating microRNAs (miRNAs) which could potentially predict outcome of IFN-α therapy. Here, we report development of a simplified scoring model for personalized treatment of CHB patients. 112 CHB patients receiving IFN-α treatment were randomly divided into a training (n = 75) or a validation group (n = 37). The expression of 15 candidate miRNAs was detected in training group with 5 miRNAs exhibiting significantly different levels (p < 0...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29128662/activation-of-innate-immunity-in-primary-human-cells-using-a-plant-virus-derived-nanoparticle-tlr7-8-agonist
#4
Damien Carignan, Sabine Herblot, Marie-Ève Laliberté-Gagné, Marilène Bolduc, Michel Duval, Pierre Savard, Denis Leclerc
Rod-shaped virus-like nanoparticles (VLNP) made of papaya mosaic virus (PapMV) coat proteins (CP) self-assembled around a single stranded RNA (ssRNA) were showed to be a TLR7 agonist. Their utilization as an immune modulator in cancer immunotherapy was shown to be promising. To establish a clinical relevance in human for PapMV VLNP, we showed that stimulation of human peripheral blood mononuclear cells (PBMC) with VLNP induces the secretion of interferon alpha (IFNα) and other pro-inflammatory cytokines and chemokines...
November 8, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/29124516/purification-of-therapeutic-proteins-mediated-by-in-vivo-polyester-immobilized-sortase
#5
Jinping Du, Bernd H A Rehm
OBJECTIVES: To overcome laborious and costly procedures often associated with therapeutic protein production and purification, in vivo polyester immobilized sortase is explored for the production of human tumor necrosis factor alpha (TNFα) and human interferon alpha 2b (IFNα2b) by Escherichia coli. RESULTS: Hybrid genes encoding PhaC-Sortase-TNFα or PhaC-Sortase-IFNα2b fusions (with a LPETG recognition signal immediately before TNFα or IFNα2b), mediated intracellular production of polyester (polyhydroxyalkanoate, PHA) beads in Escherichia coli...
November 9, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/29114374/prevention-of-chemotherapy-induced-nephrotoxicity-in-children-with-cancer
#6
REVIEW
Fatemeh Ghane Sharbaf, Hamid Farhangi, Farahnak Assadi
Children with cancer treated with cytotoxic drugs are frequently at risk of developing renal dysfunction. The cytotoxic drugs that are widely used for cancer treatment in children are cisplatin (CPL), ifosfamide (IFO), carboplatin, and methotrexate (MTX). Mechanisms of anticancer drug-induced renal disorders are different and include acute kidney injury (AKI), tubulointerstitial disease, vascular damage, hemolytic uremic syndrome (HUS), and intrarenal obstruction. CPL nephrotoxicity is dose-related and is often demonstrated with hypomagnesemia, hypokalemia, and impaired renal function with rising serum creatinine and blood urea nitrogen levels...
2017: International Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29109164/zika-virus-zikv-replication-is-substantially-inhibited-by-novel-favipiravir-and-interferon-alpha-combination-regimens
#7
Camilly P Pires de Mello, Xun Tao, Tae Hwan Kim, Jürgen B Bulitta, Jaime L Rodriquez, Justin J Pomeroy, Ashley N Brown
Zika virus (ZIKV) is a major public health concern due to its overwhelming spread into the Americas. Currently there are neither licensed vaccines nor antiviral therapies available for the treatment of ZIKV. We aimed to identify and rationally optimize effective therapeutic regimens for ZIKV by evaluating the antiviral potential of approved broad-spectrum antiviral agents favipiravir (FAV), interferon-alpha (IFN), and ribavirin (RBV) as single agent and combinations. For these studies, Vero cells were infected with ZIKV in the presence of increasing concentrations of FAV, IFN, or/and RBV for four days...
November 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29108206/-association-between-il28b-gene-polymorphisms-and-therapeutic-effect-of-individualized-pegylated-interferon-alpha-therapy-in-hbeag-positive-chronic-hepatitis-b-patients
#8
L J Huang, J E Yang, Z X Xu, G L Wang
No abstract text is available yet for this article.
October 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/29108190/-consensus-on-pegylated-interferon-alpha-in-treatment-of-chronic-hepatitis-b
#9
W H Zhang, D Z Zhang, X G Dou, Q Xie, J J Jiang, X Y Chen, H Ren
No abstract text is available yet for this article.
September 20, 2017: Zhonghua Gan Zang Bing za Zhi, Zhonghua Ganzangbing Zazhi, Chinese Journal of Hepatology
https://www.readbyqxmd.com/read/29103340/immunogenicity-of-branched-polyethylene-glycol-modified-interferon-alpha
#10
Weidong Zhou, Daru Lu, Xiaojin Liao, Lu Zhuang, Li Sun
AIM: To assess the immunogenicity of Peginterferon alpha-2 b(Pegberon) and its effect on the efficacy and safety in phase III clinical trial, by comparing it with the control drug Pegasys. METHODS: 770 patients were recruited in total. 509 were treated with Pegberon plus ribavirin and 261 were treated with Pegasys plus ribavirin. After treatment of 12 and 24 weeks, plasma samples were collected from individual patients for detecting the anti-therapeutic antibodies (ATA) and hepatitis C RNA(HCV RNA), to evaluate the production of antibodies and their adverse effect on the efficacy and safety of the treatments...
November 6, 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/29096637/purification-of-target-proteins-from-intracellular-inclusions-mediated-by-intein-cleavable-polyhydroxyalkanoate-synthase-fusions
#11
Jinping Du, Bernd H A Rehm
BACKGROUND: Recombinant protein production and purification from Escherichia coli is often accompanied with expensive and complicated procedures, especially for therapeutic proteins. Here it was demonstrated that, by using an intein cleavable polyhydroxyalkanoate synthase fusion, recombinant proteins can be first produced and sequestered on a natural resin, the polyhydroxyalkanoate (PHA) inclusions, then separated from contaminating host proteins via simple PHA bead isolation steps, and finally purified by specific release into the soluble fraction induced by a pH reduction...
November 2, 2017: Microbial Cell Factories
https://www.readbyqxmd.com/read/29090221/ifn-%C3%AE-boosting-of-mycobacterium-bovis-bacillus-calmette-g%C3%A3-erin-vaccine-promoted-th1-type-cellular-response-and-protection-against-m-tuberculosis-infection
#12
C E Rivas-Santiago, G G Guerrero
The role of type I IFNs in the pathogenesis and control of mycobacterial infection is still controversial. It has been reported that type I IFNs exacerbated M. tuberculosis infection through hampering Th1 type cellular immune response. However, under certain conditions they can act as natural immune adjuvants for commercial vaccines. At this point, we have reported recently that successive IFN-alpha boosting of Mycobacterium bovis Bacillus Calmette Güerin (BCG) vaccinated mice protected adult mice from intradermal M...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29079518/efficacy-of-nvr-3-778-alone-and-in-combination-with-pegylated-interferon-vs-entecavir-in-upa-scid-mice-with-humanized-livers-and-hbv-infection
#13
Klaus Klumpp, Takashi Shimada, Lena Allweiss, Tassilo Volz, Marc Lütgehetmann, G Hartman, Osvaldo A Flores, Angela M Lam, Maura Dandri
BACKGROUND & AIMS: NVR3-778 is a capsid assembly modulator in clinical development. We determined the in vivo anti-viral efficacy and effects on innate and endoplasmic reticulum (ER) stress responses of NVR3-778 alone or in combination with pegylated interferon alpha (peg-IFN) and compared with entecavir. METHODS: We performed 2 studies, with a total of 61 uPA/SCID mice with humanized livers. Mice were infected with a HBV genotype C preparation; we waited 8 weeks for persistent infection of the human hepatocytes in livers of mice...
October 24, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29075265/kir3ds1-hla-b-bw4-80ile-genotype-is-correlated-with-the-ifn-%C3%AE-therapy-response-in-hepatitis-b-e-antigen-positive-chronic-hepatitis-b
#14
Wenting Li, Xiaokun Shen, Binqing Fu, Chuang Guo, Yanyan Liu, Ying Ye, Rui Sun, Jiabin Li, Zhigang Tian, Haiming Wei
To date, several on-treatment-level virological and serological indices that may predict the response to interferon alpha (IFN-α) have been reported. However, no effective predictors, such as drug-response genes, that can be detected before administration of anti-hepatitis B virus (HBV) therapy with IFN-α, have been found. In the diverse range of chronic viral infection, genes that affect human immunity play important roles in understanding host and viral co-evolution. Killer-cell immunoglobulin-like receptors (KIRs), which are highly polymorphic at the allele and haplotype levels, participate in the antiviral function of natural killer (NK) cells via fine-tuning inhibition and activation of NK-cell responses that occur when the NK cells interact with human leukocyte antigen (HLA) class I molecules on target cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29075082/response-to-alpha-interferon-treatment-of-the-congenital-dyserythropoietic-anemia-type-i-in-two-sicilian-beta-thalassemia-carriers
#15
V Agrigento, R Barone, S Sclafani, R Di Maggio, M Sacco, A Maggio, E D'Alcamo
Congenital dyserythropoietic anemia type I (CDAI) is an autosomal recessive inherited haematological disorder associated with moderate-to-severe anemia characterized by ineffective erythropoiesis with distinct morphological abnormalities in erythroid precursors. We present two case of congenital dyserythropoietic anemia type I in two Sicilian patients heterozygous for β(0) 39 globin gene cod 39 C > T with marked bone marrow abnormalities, responding to treatment with alpha interferon. The diagnosis was established using routine haematological and biochemical test, light and electron microscopy; molecular analysis of the CDAN1 gene associated to the CDAI disease was performed...
December 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/29062331/osteopontin-as-a-marker-for-response-to-pegylated-interferon-alpha-2b-treatment-in-chronic-hcv-saudi-patients
#16
Yousri Mostafa Hussein, Ayman Alhazmi, Saad Alzahrani, Ahmad El-Askary, Abdulrahman Alghamdy, Eman Bayomy, Assmaa Selim, Mohammed Alghamdy
BACKGROUND: Many recent studies support the idea that osteopontin (OPN) can be used to predict the success of pegylated interferon (PEG IFN) alpha-2b/ribavirin therapy in chronic HCV patients. OBJECTIVE: Our aim was to investigate the role of plasma OPN and its gene polymorphism at nt - 443 in response to PEG IFN in Saudi patients with chronic HCV. METHODS: Blood was collected from 87 patients with chronic hepatitis C before treatment, then patients received PEG IFN α2b plus ribavirin combination therapy...
June 2017: African Health Sciences
https://www.readbyqxmd.com/read/29061332/human-plasmacytoid-dendritic-cells-acquire-phagocytic-capacity-by-tlr9-ligation-in-the-presence-of-soluble-factors-produced-by-renal-epithelial-cells
#17
Jurjen M Ruben, Gina Stella García-Romo, Eytan Breman, Sandra van der Kooij, Anke Redeker, Ramon Arens, Cees van Kooten
Plasmacytoid dendritic cells (pDCs) are antigen presenting cells specialized in viral recognition through Toll-like receptor (TLR)7 and TLR9, and produce vast amounts of interferon alpha upon ligation of these TLRs. We had previously demonstrated a strong influx of pDCs in the tubulointerstitium of renal biopsies at the time of acute rejection. However, the role of human pDCs in mediating acute or chronic allograft rejection remains elusive. pDCs are thought to have a limited capacity to ingest apoptotic cells, critical for inducing CD4(+) T cell activation via indirect antigen presentation and subsequent activation of antibody producing B cells...
October 20, 2017: Kidney International
https://www.readbyqxmd.com/read/29049190/chronic-active-epstein-barr-virus-infection-as-the-initial-symptom-in-a-janus-kinase-3-deficiency-child-case-report-and-literature-review
#18
REVIEW
Linqing Zhong, Wei Wang, Mingsheng Ma, Lijuan Gou, Xiaoyan Tang, Hongmei Song
RATIONALE: With the progress of sequencing technology, an increasing number of atypical primary immunodeficiency (PID) patients have been discovered, including Janus kinase 3 (JAK3) gene deficiency. PATIENT CONCERNS: We report a patient who presented with chronic active Epstein-Barr virus (CAEBV) infection but responded poorly to treatment with ganciclovir. DIAGNOSES: Next-generation sequencing (NGS) was performed, including all known PID genes, after which Sanger sequencing was performed to verify the results...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29046453/murine-hepatitis-virus-nsp14-exoribonuclease-activity-is-required-for-resistance-to-innate-immunity
#19
James Brett Case, Yize Li, Ruth Elliott, Xiaotao Lu, Kevin W Graepel, Nicole R Sexton, Everett Clinton Smith, Susan R Weiss, Mark R Denison
Coronaviruses (CoVs) are positive-sense RNA viruses that infect numerous mammalian and avian species and are capable of causing severe and lethal disease in humans. CoVs encode several innate immune antagonists that counteract the host innate immune response to facilitate efficient viral replication. CoV non-structural protein 14 (nsp14) encodes 3' -to-5' exoribonuclease activity (ExoN), which performs a proofreading function and is required for high-fidelity replication. Outside of the order Nidovirales, arenaviruses are the only RNA viruses that encode an ExoN, which functions to degrade dsRNA replication intermediates...
October 18, 2017: Journal of Virology
https://www.readbyqxmd.com/read/29044676/world-health-organization-defined-eosinophilic-disorders-2017-update-on-diagnosis-risk-stratification-and-management
#20
REVIEW
Jason Gotlib
DISEASE OVERVIEW: The eosinophilias encompass a broad range of nonhematologic (secondary or reactive) and hematologic (primary, clonal) disorders with potential for end-organ damage. DIAGNOSIS: Hypereosinophilia has generally been defined as a peripheral blood eosinophil count greater than 1500/mm(3) and may be associated with tissue damage. After exclusion of secondary causes of eosinophilia, diagnostic evaluation of primary eosinophilias relies on a combination of morphologic review of the blood and marrow, standard cytogenetics, fluorescent in situ-hybridization, flow immunocytometry, and T-cell clonality assessment to detect histopathologic or clonal evidence for an acute or chronic myeloid or lymphoproliferative disorder...
November 2017: American Journal of Hematology
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