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https://www.readbyqxmd.com/read/29163506/the-significance-of-type-i-interferons-in-the-pathogenesis-and-therapy-of-human-immunodeficiency-virus-1-infection
#1
REVIEW
Bowen Wang, Wen Kang, Jiahui Zuo, Wenzhen Kang, Yongtao Sun
Type-I interferons (IFN-I) are a widely expressed family that could promote antivirus immunity in the process of pathogens invasion. In a human immunodeficiency virus 1 (HIV-1)-infected individual, the production of IFN-I can be detected as early as the acute phase and will persist throughout the course of infection. However, sustained stimulation of immune system by IFN-I also contributes greatly to host-mediated immunopathology and diseases progression. Although the protective effects of IFN-I in the acute phase of HIV-1 infection have been observed, more studies recently focus on their detrimental role in the chronic stage...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29162707/cd4-t-cells-orchestrate-lethal-immune-pathology-despite-fungal-clearance-during-cryptococcus-neoformans-meningoencephalitis
#2
Lori M Neal, Enze Xing, Jintao Xu, Jessica L Kolbe, John J Osterholzer, Benjamin M Segal, Peter R Williamson, Michal A Olszewski
Cryptococcus neoformans is a major fungal pathogen that disseminates to the central nervous system (CNS) to cause fatal meningoencephalitis, but little is known about immune responses within this immune-privileged site. CD4(+) T cells have demonstrated roles in anticryptococcal defenses, but increasing evidence suggests that they may contribute to clinical deterioration and pathology in both HIV-positive (HIV+) and non-HIV patients who develop immune reconstitution inflammatory syndrome (IRIS) and post-infectious inflammatory response syndrome (PIIRS), respectively...
November 21, 2017: MBio
https://www.readbyqxmd.com/read/29162141/more-than-meets-the-i-the-diverse-antiviral-and-cellular-functions-of-interferon-induced-transmembrane-proteins
#3
REVIEW
Guoli Shi, Olivier Schwartz, Alex A Compton
The first responders of human antiviral immunity are components of the intrinsic immune response that reside within each and every one of our cells. This cell-autonomous arsenal consists of nucleic acid sensors and antiviral effectors strategically placed by evolution to detect and restrict invading viruses. While some factors are present at baseline to allow for constant surveillance of the cell interior, others are upregulated by cytokines (such as interferons) that signal a viral infection underway in neighboring cells...
November 21, 2017: Retrovirology
https://www.readbyqxmd.com/read/29155877/immune-response-profiles-of-calves-following-vaccination-with-live-bcg-and-inactivated-mycobacterium-bovis-vaccine-candidates
#4
E M D L van der Heijden, J Chileshe, J C M Vernooij, C Gortazar, R A Juste, I Sevilla, J E Crafford, V P M G Rutten, A L Michel
Conventional control and eradication strategies for bovine tuberculosis (BTB) face tremendous difficulties in developing countries; countries with wildlife reservoirs, a complex wildlife-livestock-human interface or a lack of veterinary and veterinary public health surveillance. Vaccination of cattle and other species might in some cases provide the only suitable control strategy for BTB, while in others it may supplement existing test-and-slaughter schemes. However, the use of live BCG has several limitations and the global rise of HIV/AIDS infections has furthermore warranted the exploration of inactivated vaccine preparations...
2017: PloS One
https://www.readbyqxmd.com/read/29154044/modulating-host-immune-responses-to-fight-invasive-fungal-infections
#5
REVIEW
James E Scriven, Mark W Tenforde, Stuart M Levitz, Joseph N Jarvis
Modulation of host immunity in invasive fungal infection is an appealing but as yet mostly elusive treatment strategy. Animal studies in invasive candidiasis and aspergillosis have demonstrated beneficial effects of colony stimulating factors, interferon-gamma and monoclonal antibodies. More recent studies transfusing leukocytes pre-loaded with lipophilic anti-fungal drugs, or modulated T-cells, along with novel vaccination strategies show great promise. The translation of immune therapies into clinical studies has been limited to date but this is changing and the results of new Candida vaccine trials are eagerly awaited...
November 15, 2017: Current Opinion in Microbiology
https://www.readbyqxmd.com/read/29145422/missense-mutation-at-cldn8-associated-with-a-high-plasma-interferon-gamma-inducible-protein-10-level-in-methadone-maintained-patients-with-urine-test-positive-for-morphine
#6
Tung-Hsia Liu, Ren-Hua Chung, Sheng-Chang Wang, Chiu-Ping Fang, Hsiao-Hui Tsou, Chia-Lung Shih, Hsiang-Wei Kuo, Yun Wang, Yu-Li Liu
We previously reported a high plasma chemokine interferon gamma-inducible protein 10 (IP-10) level and prolonged electrocardiography QT-interval in methadone maintenance treatment (MMT) patients with HIV or HCV infection. The purpose of this study was to evaluate the genetic association of high plasma IP-10 level in the MMT patients. The gene-based and pathway-based association analyses were conducted using a genome-wide association study dataset in 344 MMT patients for identifying genes and pathways associated with plasma IP-10 level...
2017: PloS One
https://www.readbyqxmd.com/read/29145159/potential-link-between-m-6-a-modification-and-systemic-lupus-erythematosus
#7
REVIEW
Lian-Ju Li, Yin-Guang Fan, Rui-Xue Leng, Hai-Feng Pan, Dong-Qing Ye
The field of m(6)A modification and epitranscriptomics has recently attracted much attention. More methods allowing for precise m(6)A site profiling and location are developed and crucial players of m(6)A modification machinery are increasingly identified. Although some challenges remain, m(6)A modification is found to modulate almost all aspects of RNA metabolism, such as splicing, stability, structure, translation, and export. Thus, m(6)A modification adds a new layer of post-transcriptional gene expression regulation, and it is implicated in T cell response to HIV infection, type I interferon production, and T cell differentiation and homeostasis...
November 13, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/29140946/comparison-of-the-quantiferon-tb-gold-in-tube-assay-with-tuberculin-skin-test-for-the-diagnosis-of-latent-tuberculosis-infection-among-hiv-infected-and-uninfected-children
#8
Walter Dehority, Rolando M Viani, Maria Rosario G Araneta, Graciano Lopez, Stephen A Spector
BACKGROUND: Diagnosis of latent tuberculosis infection (LTBI) is facilitated by tuberculin skin testing (TST) or interferon-gamma release assays such as the QuantiFERON TB Gold In-Tube (QTF-GIT) assays. Limited data exist on the utility of interferon-gamma release assays in HIV-infected children, which may be falsely negative due to immunosuppression. METHODS: A cross-sectional study comparing TST to QTF-GIT for the diagnosis of suspected LTBI was performed in children in Tijuana, Mexico, and in San Diego, California...
December 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29140933/t-spot-tb%C3%A2-performance-in-routine-pediatric-practice-in-a-low-tb-burden-setting
#9
Anna M Mandalakas, Heather Y Highsmith, Nadine M Harris, Anna Pawlicka, H Lester Kirchner
BACKGROUND: The T-SPOT.TB, an interferon-γ release assay (IGRA), is an indirect test of Mycobacterium tuberculosis infection. Due to sparse and conflicting evidence, IGRA use is limited in young and HIV-infected children. We determined the prevalence of invalid, borderline, positive, and negative results and associations with key demographic variables during routine pediatric use in a TB low-burden setting. METHODS: For pediatric samples received at Oxford Diagnostic Laboratories from 2010-2015, the associations between initial test outcome and demographics were estimated by bivariate analysis and logistic regression...
November 14, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29135574/interferon-free-therapy-for-treating-hcv-in-difficult-to-treat-hiv-coinfected-patients-as-implemented-in-routine-medical-practice
#10
Carlos Mínguez, Miguel García-Deltoro, Juan Flores, Maria-José Galindo, Marta Montero, Sergio Reus, Jorge Carmena, Mar Masiá, Concepción Amador, Enrique Ortega
BACKGROUND/AIMS: Data regarding the use of all-oral direct-acting antivirals (DAA) in HIV/HCV-coinfected patients with advanced liver fibrosis are required, because they are generally under-represented in clinical trials. This study sought to evaluate the use of these drugs in a cohort of coinfected patients, mostly with factors that have previously been recognised as predictors of treatment failure. METHODS: COINFECOVA-2 is an observational, multicenter study conducted in Eastern Spain...
November 10, 2017: AIDS
https://www.readbyqxmd.com/read/29126235/clinical-significance-of-interferon-%C3%AE-neutralizing-autoantibodies-against-disseminated-nontuberculous-mycobacterial-disease
#11
Ami Aoki, Takuro Sakagami, Kazutaka Yoshizawa, Kenjiro Shima, Mio Toyama, Yoshinari Tanabe, Hiroshi Moro, Nobumasa Aoki, Satoshi Watanabe, Toshiyuki Koya, Takashi Hasegawa, Kozo Morimoto, Atsuyuki Kurashima, Yoshihiko Hoshino, Bruce C Trapnell, Toshiaki Kikuchi
Background: Interferon-γ neutralizing autoantibodies (nIFNγ-autoAb) are reported in patients with disseminated nontuberculous mycobacteria (NTM) infection and may function by increasing the infection risk. Notwithstanding, the prevalence of nIFNγ-autoAb as well as the clinical presentation, diagnosis, and natural history, of disseminated NTM infection in these patients is poorly understood. Methods: In this retrospective observational study, data and sera for 331 Japanese subjects with mycobacterial infection were collected and analyzed...
November 8, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29119934/direct-acting-antivirals-for-hiv-hcv-co-infected-individuals-as-good-as-it-gets
#12
Giuseppe Bruno, Annalisa Saracino
Although HIV/HCV co-infected individuals were historically considered a "difficult to treat" population in the era of Interferon (IFN)-based anti-HCV treatment, the introduction of direct-acting antivirals, characterized by excellent efficacy and good safety profile, has widely revolutionized the HCV treatment scenario. Recent real life studies reported excellent sustained virological response rates in HIV/HCV co-infected subjects, thus confirming data obtained in randomized clinical trials. However, certain issues have recently emerged in this population...
November 8, 2017: Current HIV Research
https://www.readbyqxmd.com/read/29116684/disparities-in-direct-acting-antivirals-uptake-in-hiv-hepatitis-c-co-infected-populations-in-canada
#13
Sahar Saeed, Erin C Strumpf, Erica Em Moodie, Jim Young, Roy Nitulescu, Joseph Cox, Alexander Wong, Sharon Walmsely, Curtis Cooper, Marie-Lousie Vachon, Valerie Martel-Laferriere, Mark Hull, Brian Conway, Marina B Klein
BACKGROUND: Direct acting antivirals (DAAs) have revolutionized hepatitis C (HCV) treatment with >90% cure rates even in real-world studies, giving hope that HCV can be eliminated. However, for DAAs to have a population-level impact on the burden of HCV disease, treatment uptake needs to be expanded. We investigated temporal trends in HCV treatment uptake and evaluated factors associated with second-generation DAA initiation and efficacy among key HIV-HCV co-infected populations in Canada...
November 2017: Journal of the International AIDS Society
https://www.readbyqxmd.com/read/29110758/apol1-renal-risk-variants-fertile-soil-for-hiv-associated-nephropathy
#14
REVIEW
Jeffrey B Kopp, Jurgen Heymann, Cheryl A Winkler
Apolipoprotein L1 (APOL1) genetic variants are potent risk factors for glomerular disease, but one or more additional factors are required for expression of glomerular disease. Uncontrolled or poorly controlled human immunodeficiency virus (HIV) infection is the most potent susceptibility factor for APOL1 nephropathy that has been identified to date. APOL1 variants are associated with HIV-associated nephropathy (HIVAN), a podocyte disease, but not with HIV-immune complex disease, primarily a disease of the mesangium...
November 2017: Seminars in Nephrology
https://www.readbyqxmd.com/read/29108121/hepatitis-c-and-human-immunodeficiency-virus-co-infection-in-the-era-of-direct-acting-antiviral-agents-no-longer-a-difficult-to-treat-population
#15
Cameron Sikavi, Phillip H Chen, Alex D Lee, Elena G Saab, Gina Choi, Sammy Saab
BACKGROUND: The treatment of chronic hepatitis C (HCV) in human immunodeficiency virus 1 (HIV) infected individuals has been historically marked by low sustained virologic response (SVR) rates in comparison to those without HIV infection, resulting in the Food and Drug Administration (FDA) labeling those coinfected as a "special population with an unmet medical need." OBJECTIVES: We systematically reviewed the treatment of chronic HCV infection in those infected with HIV...
November 6, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29084047/infection-by-htlv-1-is-associated-with-high-levels-of-pro-inflammatory-cytokines-in-hiv-hcv-coinfected-patients
#16
Carlos Brites, Marcos Abrahão, Patrícia Bozza, Eduardo M Netto, André Lyra, Fabianna Bahia
OBJECTIVES: HIV, HCV, and HTLV-1 share the same routes of infection, making coinfection by these viruses a frequent finding in endemic areas. However, there is scarce information on the clinical / immunological consequences of triple infection. Coinfection by HTLV-1 is able to modulate cytokine´s production in HIV patients, but there is no data on the immune response of HIV-HCV-HTLV-1 infected patients METHODS:: we compared the plasma levels of 25 different cytokines in HIV-HCV patients, according to their serostatus to HTLV-1 infection...
October 27, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/29083319/hiv-antibody-complexes-enhance-production-of-type-i-interferon-by-plasmacytoid-dendritic-cells
#17
Rebecca T Veenhuis, Zachary T Freeman, Jack Korleski, Laura K Cohen, Guido Massaccesi, Alessandra Tomasi, Austin W Boesch, Margaret E Ackerman, Joseph B Margolick, Joel N Blankson, Michael A Chattergoon, Andrea L Cox
Type I IFN production is essential for innate control of acute viral infection; however, prolonged high-level IFN production is associated with chronic immune activation in HIV-infected individuals. Although plasmacytoid DCs (pDCs) are a primary source of IFN, the mechanisms that regulate IFN levels following the acute phase are unknown. We hypothesized that HIV-specific Ab responses regulate late IFN production. We evaluated the mechanism through which HIV-activated pDCs produce IFN as well as how both monoclonal HIV-specific Abs and Abs produced in natural HIV infection modulated normal pDC sensing of HIV...
October 30, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29081251/an-update-on-the-treatment-options-for-hbv-hcv-coinfection
#18
Evangelista Sagnelli, Caterina Sagnelli, Margherita Macera, Mariantonietta Pisaturo, Nicola Coppola
Despite the reciprocal inhibition exerted by HBV and HCV genomes, dual HBV/HCV infection is associated with more severe forms of liver disease and warrant effective treatment. Areas covered: A careful evaluation of disease progression to establish the predominance of one virus over another, concomitant HIV infection and comorbidities is essential to make the best therapy choices. In most virological conditions interferon (IFN)-based treatment has been replaced by a combination of different classes of second generation directly acting antivirals (DAAs), which offer better tolerability and HCV eradication in 95% of cases...
November 2, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/29080719/interleukin-28b-rs12979860-genotype-and-human-immunodeficiency-virus-type-1-susceptibility-aids-development-and-therapeutic-outcome
#19
Imane Zaidane, Lahcen Wakrim, Ahd Oulad Lahsen, Rajaa Bensghir, Hajar Chihab, Fatima Zahra Jadid, Raouia El Fihry, Hassan Lamdini, Naouar Fayssel, Kamal Marhoum El Filali, Mounia Oudghiri, Soumaya Benjelloun, Sayeh Ezzikouri
Human Immunodeficiency Virus type 1 (HIV-1) infection and progression varies widely among individuals. Interferon-λ3 exerts anti-HIV function by activating JAK/STAT pathway-mediated innate immunity. Therefore, we aimed to investigate the association between single nucleotide polymorphisms of the interleukin 28B (IL28B) gene, and the risk of acquisition, AIDS development and therapeutic outcome of HIV-1 in a Moroccan population. A total of 266 HIV-1 seropositive and 158 HIV-1 seronegative subjects were enrolled...
October 25, 2017: Human Immunology
https://www.readbyqxmd.com/read/29077766/peripheral-blood-hiv-1-dna-dynamics-in-antiretroviral-treated-hiv-hcv-co-infected-patients-receiving-directly-acting-antivirals
#20
Gabriella Rozera, Gabriele Fabbri, Patrizia Lorenzini, Ilaria Mastrorosa, Laura Timelli, Mauro Zaccarelli, Alessandra Amendola, Alessandra Vergori, Maria Maddalena Plazzi, Stefania Cicalini, Andrea Antinori, Maria Rosaria Capobianchi, Isabella Abbate, Adriana Ammassari
BACKGROUND: Aim was to determine the dynamics of peripheral blood mononuclear cells (PBMC)- associated total HIV-1 DNA in successfully ART-treated HIV/HCV co-infected patients receiving DAA treatment and to explore possible virological hypotheses underlying the phenomenon. METHODS: Longitudinal, single-centre study measuring total HIV-1 DNA before the start of DAA, at the end of treatment (EOT), and 3 months after treatment. Univariable and multivariable analyses were used to assess factors associated with HIV-1 DNA increase ≥0...
2017: PloS One
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