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Immunology and hepatitis c

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https://www.readbyqxmd.com/read/29318374/role-of-ribavirin-in-the-treatment-of-hepatitis-c-virus-associated-mixed-cryoglobulinemia-with-interferon-free-regimens
#1
Lucio Boglione, Jessica Cusato, Simone Mornese Pinna, Amedeo De Nicolò, Giuseppe Cariti, Giovanni Di Perri, Antonio D'Avolio
Mixed cryoglobulinemia (MC) is the most common extrahepatic manifestation of chronic hepatitis C (CHC), with the presence of symptoms in 10-15% of cases. There have been encouraging data regarding immunological and clinical responses in patients treated with the novel combinations of direct-acting antivirals (DAAs), but the role of ribavirin (RBV) in the treatment of MC has not yet been demonstrated. We prospectively enrolled 132 patients affected by MC and CHC, and virological, immunological and clinical responses were evaluated at 12 weeks after completion of treatment...
January 9, 2018: Archives of Virology
https://www.readbyqxmd.com/read/29310419/proliferative-lupus-nephritis-in-the-absence-of-overt-systemic-lupus-erythematosus-a-historical-study-of-12-adult-patients
#2
Maxime Touzot, Cécile Saint-Pastou Terrier, Stanislas Faguer, Ingrid Masson, Hélène François, Lionel Couzi, Aurélie Hummel, Nathalie Quellard, Guy Touchard, Noémie Jourde-Chiche, Jean-Michel Goujon, Eric Daugas
Severe lupus nephritis in the absence of systemic lupus erythematosus (SLE) is a rare condition with an unclear clinical presentation and outcome.We conducted a historical observational study of 12 adult (age >18 years) patients with biopsy-proven severe lupus nephritis or lupus-like nephritis without SLE immunological markers at diagnosis or during follow-up. Excluded were patients with chronic infections with HIV or hepatitis B or C; patients with a bacterial infectious disease; and patients with pure membranous nephropathy...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29299802/hcv-coinfection-of-the-hiv-infected-patients-with-discordant-cd4-t-cell-response-to-antiretroviral-therapy-leads-to-intense-systemic-inflammation
#3
K V Shmagel, L B Korolevskaya, E V Saidakova, N G Shmagel, V A Chereshnev, L Margolis, D Anthony, M Lederman
The level of proinflammatory markers was assessed in HIV-infected patients that were coinfected with hepatitis C virus (HCV) and had failed to restore the CD4+ T cell counts (immunological nonresponders, INR) during the antiretroviral therapy (ART). Among four patient groups (HIV+HCV- and HIV+HCV+ subjects with the concordant response to ART; HIV+HCV- and HIV+HCV+ subjects that were INR), the greatest systemic inflammation was in the latter group. The maximum difference was between the subjects HIV+HCV-INR and HIV+HCV+ INR: the blood of coinfected patients contained significantly higher concentrations of the IP-10, sCD163, sTNF-RI, and sTNF-RII and of bacterial lipopolysaccharide...
November 2017: Doklady Biological Sciences: Proceedings of the Academy of Sciences of the USSR, Biological Sciences Sections
https://www.readbyqxmd.com/read/29290508/the-emergency-medicine-evaluation-and-management-of-the-patient-with-cirrhosis
#4
REVIEW
Brit Long, Alex Koyfman
BACKGROUND: Cirrhosis is a significant cause of death in the U.S. and has a variety of causes, most commonly Hepatitis C and alcohol. Liver fibrosis and nodule formation result in significant complications due to portal system hypertension. There are several deadly complications emergency physicians must consider. OBJECTIVE OF THE REVIEW: Provide an evidence-based update for the resuscitation of decompensating cirrhotic patients and an overview of cirrhosis complications...
December 23, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29283218/identifying-the-genotypes-of-hepatitis-b-virus-hbv-with-dna-origami-label
#5
Ke Liu, Dun Pan, Yanqin Wen, Honglu Zhang, Jie Chao, Lihua Wang, Shiping Song, Chunhai Fan, Yongyong Shi
The hepatitis B virus (HBV) genotyping may profoundly affect the accurate diagnosis and antiviral treatment of viral hepatitis. Existing genotyping methods such as serological, immunological, or molecular testing are still suffered from substandard specificity and low sensitivity in laboratory or clinical application. In a previous study, a set of high-efficiency hybridizable DNA origami-based shape ID probes to target the templates through which genetic variation could be determined in an ultrahigh resolution of atomic force microscopy (AFM) nanomechanical imaging are established...
December 28, 2017: Small
https://www.readbyqxmd.com/read/29260741/-lymphocyte-subpopulations-levels-of-interferon-and-expression-of-their-receptors-in-patients-with-chronic-hepatitis-b-and-c-correlation-with-the-species-of-viruses-and-the-degree-of-liver-fibrosis
#6
O V Kalyuzhin, Zh B Ponezheva, I V Semenova, O N Khokhlova, L V Serebrovskaya, T S Guseva, O V Parshina, V V Maleev
AIM: To determine whether there is a correlation of the composition of circulating lymphocyte subpopulations, the serum concentrations of interferon (IFN)-α, IFN-γ, and IFN-λ3, and the lymphocyte expression of types I and II IFN receptors with the species of a disease pathogen and the degree of liver fibrosis (LF) in patients with chronic hepatitis B (CHB) and in those with chronic hepatitis C (CHC). SUBJECTS AND METHODS: The investigation enrolled 44 patients with CHC, 9 patients with CHB, and 13 clinically healthy donors...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/29238510/epidemiology-transmission-diagnosis-and-outcome-of-hepatitis-c-virus-infection
#7
REVIEW
Seyed Hamid Moosavy, Parivash Davoodian, Mirza Ali Nazarnezhad, Abdolazim Nejatizaheh, Ebrahim Eftekhar, Hamidreza Mahboobi
Hepatitis C infection is one of the main causes of chronic liver disorders worldwide. Nearly three percent (3%) of the world population has an HCV infection. Prevalence of HCV infection was higher in some groups such as injected drug users (IDUs) and HIV positive populations. Acute hepatitis has proven asymptomatic in most cases, and delay of diagnosis might lead to late onset of hepatocellular carcinoma and cirrhosis. Some host characteristics such as age, gender, body mass index, and viral properties are associated with HCV outcome hepatitis...
October 2017: Electronic Physician
https://www.readbyqxmd.com/read/29100033/inflammation-is-regulated-by-the-adenosine-derivative-molecule-ifc-305-during-reversion-of-cirrhosis-in-a-ccl4-rat-model
#8
Rebeca Pérez-Cabeza de Vaca, Mariana Domínguez-López, Nuria Guerrero-Celis, Jesús R Rodríguez-Aguilera, Victoria Chagoya de Sánchez
Cirrhosis is a liver pathology originated by hepatocytes, Kupffer and hepatic stellate cells interactions and transformations. This pathology is associated with inflammation and fibrosis, originated by molecular signals secreted by immunological and parenchymal cells, such as cytokines and chemokines, like IL-1β, IL-6, TNF-α or MCP-1, driven by Kupffer cells signals. As part of inflammation resolution, the same activated Kupffer cells contribute to anti-inflammatory effects with IL-10 and MMP-9 secretion...
October 28, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/29068601/rheumatoid-factor-and-anti-cyclic-citrullinated-peptide-anti-ccp-antibodies-with-hepatitis-b-and-hepatitis-c-infection-review
#9
Orhan Zengin, Hamit Yıldız, Zeynep Hanım Demir, Muhammed Sait Dağ, Musa Aydınlı, Ahmet Mesut Onat, Bünyamin Kısacık
BACKGROUND: Viruses are common and are involved in the etiology of idiopathic rheumatological diseases. Hepatitis B virus (HBV), a member of the family Hepadnaviridae and hepatitis C virus (HCV), play an important role in the undetermined etiology of arthritis. The clinical manifestations of hepatitis B and C show similarities with various diseases, such as rheumatic diseases. Anti-cyclic citrullinated peptide (anti-CCP) is a specific serological marker for rheumatoid arthritis. OBJECTIVES: The aim of this study was to analyze anti-CCP and rheumatoid factor (RF) levels in patients with a hepatitis B and C infection...
September 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/29064576/molecular-characterization-of-hepatitis-c-virus-in-end-stage-renal-disease-patients-under-hemodialysis
#10
Rafael Alves da Silva, Jardelina de Souza Todão, Fernando Luiz Kamitani, Antonio Eduardo Benedito Silva, Roberto José de Carvalho-Filho, Maria Lucia Cardoso Gomes Ferraz, Isabel Maria Vicente Guedes de Carvalho
New direct-acting antiviral (DAA) agents are in development or already approved for the treatment of chronic hepatitis C virus (HCV) infection. The effectiveness of these drugs is related to the previous existence of resistant variants. Certain clinical conditions can allow changes in immunological characteristics of the host and even modify genetic features of viral populations. The aim of this study was to perform HCV molecular characterization from samples of end-stage renal disease patients on hemodialysis (ESRD-HD)...
October 24, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/29055152/predominance-of-regorafenib-over-sorafenib-restoration-of-membrane-bound-mica-in-hepatocellular-carcinoma-cells
#11
Jun Arai, Kaku Goto, Anthony Stephanou, Yasushi Tanoue, Sayaka Ito, Ryosuke Muroyama, Yasuo Matsubara, Ryo Nakagawa, Sayuri Morimoto, Yoshimi Kaise, Lay Ahyoung Lim, Hitoshi Yoshida, Naoya Kato
BACKGROUND AND AIM: The multi-kinase inhibitor regorafenib (REG) was recently demonstrated to be effective in patients with sorafenib (SOR)-resistant hepatocellular carcinoma (HCC). Interestingly, SOR is known to enhance the accumulation of membrane-bound MHC class I polypeptide-related sequence A (mMICA) in HCC cells, and to block production of soluble MICA (sMICA), an immunological decoy. In addition, MICA is associated with HCC in patients with chronic hepatitis C. We have now compared the impact of REG and SOR on MICA in HCC cells, as well as the immunotherapeutic implications thereof...
October 21, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29052780/immunotherapy-for-hepatocellular-carcinoma-patients-is-it-ready-for-prime-time
#12
REVIEW
Joseph M Obeid, Paul R Kunk, Victor M Zaydfudim, Timothy N Bullock, Craig L Slingluff, Osama E Rahma
Hepatocellular carcinoma (HCC) is the most common primary liver malignancy and the second most common cause of cancer death worldwide. Current treatment options for patients with intermediate and advanced HCC are limited, and there is an unmet need for novel therapeutic approaches. HCC is an attractive target for immunomodulation therapy, since it arises in an inflammatory milieu due to hepatitis B and C infections and cirrhosis. However, a major barrier to the development and success of immunotherapy in patients with HCC is the liver's inherent immunosuppressive function...
October 20, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29045899/early-transcriptional-divergence-marks-virus-specific-primary-human-cd8-t-cells-in-chronic-versus-acute-infection
#13
David Wolski, Peter K Foote, Diana Y Chen, Lia L Lewis-Ximenez, Catherine Fauvelle, Jasneet Aneja, Andreas Walker, Pierre Tonnerre, Almudena Torres-Cornejo, Daniel Kvistad, Sabrina Imam, Michael T Waring, Damien C Tully, Todd M Allen, Raymond T Chung, Jörg Timm, W Nicholas Haining, Arthur Y Kim, Thomas F Baumert, Georg M Lauer
Distinct molecular pathways govern the differentiation of CD8+ effector T cells into memory or exhausted T cells during acute and chronic viral infection, but these are not well studied in humans. Here, we employed an integrative systems immunology approach to identify transcriptional commonalities and differences between virus-specific CD8+ T cells from patients with persistent and spontaneously resolving hepatitis C virus (HCV) infection during the acute phase. We observed dysregulation of metabolic processes during early persistent infection that was linked to changes in expression of genes related to nucleosomal regulation of transcription, T cell differentiation, and the inflammatory response and correlated with subject age, sex, and the presence of HCV-specific CD4+ T cell populations...
October 17, 2017: Immunity
https://www.readbyqxmd.com/read/29039351/epidemiology-risk-factors-and-prognosis-of-interferon-alpha-induced-thyroid-disorders-a-prospective-clinical-study
#14
Łukasz Obołończyk, Małgorzata Siekierska-Hellmann, Piotr Wiśniewski, Anna Lewczuk, Monika Berendt-Obołończyk, Anna Lakomy, Zofia Michalska, Danuta Radowska, Grażyna Moszkowska, Agnieszka Bianek-Bodzak, Krzysztof Sworczak
INTRODUCTION: Hepatitis C virus (HCV) infection is a worldwide problem and hepatitis, which is its natural unfavourable course, is still a challenge for hepatologist. At present, standards of treatment are changing from combined therapy with interferon alpha (IFN-α) and ribavirin to new antiviral drugs. The current classification divides interferon induced thyroid diseases (IITD) into two groups: autoimmune (Hashimoto disease, Graves disease, positive antithyroid autoantibodies in euthyroid patients) and non-autoimmune (destructive thyroiditis, non-autoimmune hypothyroidism)...
September 25, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/29036705/chalcogenozidovudine-derivatives-with-antitumor-activity-comparative-toxicities-in-cultured-human-mononuclear-cells
#15
Assis Ecker, Pauline Christ Ledur, Rafael S da Silva, Daniela Bitencourt Rosa Leal, Oscar E D Rodrigues, Daniel Ardisson-Araújo, Emily Pansera Waczuk, João Batista Teixeira da Rocha, Nilda Vargas Barbosa
Considering a novel series of zidovudine (AZT) derivatives encompassing selenoaryl moieties promising candidates as therapeutics, we examined the toxicities elicited by AZT and derivatives 5'-(4-Chlorophenylseleno)zidovudine (SZ1); 5'-(Phenylseleno)zidovudine (SZ2); and 5'-(4-Methylphenylseleno)zidovudine (SZ3) in healthy cells and in mice. Resting and stimulated cultured human peripheral blood mononuclear cells (PBMCs) were treated with the compounds at concentrations ranging from 10 to 200 µM for 24 and/or 72 h...
November 1, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29017483/co-infection-of-schistosoma-mansoni-hepatitis-c-virus-and-their-associated-factors-among-adult-individuals-living-in-fishing-villages-north-western-tanzania
#16
Humphrey D Mazigo, Stella Kepha, Godfrey M Kaatano, Safari M Kinung'hi
BACKGROUND: Schistosoma mansoni and Hepatitis C virus (HCV) are co-existence in sub-Saharan Africa and co-infection is common among humans population. The immunological responses characterized with Th2-immune responses for S. mansoni and Th1-immune responses for HCV are responsible for development hepatic morbidities in infected individuals. However, the co-occurrences of S. mansoni and HCV infection, their related ultrasound detectable morbidities and associated risk factors at community levels have not been examined in fishing communities, north-western Tanzania...
October 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28981470/telomere-dynamics-in-immune-senescence-and-exhaustion-triggered-by-chronic-viral-infection
#17
REVIEW
Marcia Bellon, Christophe Nicot
The progressive loss of immunological memory during aging correlates with a reduced proliferative capacity and shortened telomeres of T cells. Growing evidence suggests that this phenotype is recapitulated during chronic viral infection. The antigenic volume imposed by persistent and latent viruses exposes the immune system to unique challenges that lead to host T-cell exhaustion, characterized by impaired T-cell functions. These dysfunctional memory T cells lack telomerase, the protein capable of extending and stabilizing chromosome ends, imposing constraints on telomere dynamics...
October 5, 2017: Viruses
https://www.readbyqxmd.com/read/28951612/hepatitis-c-cross-genotype-immunity-and-implications-for-vaccine-development
#18
Nazrul Islam, Mel Krajden, Jean Shoveller, Paul Gustafson, Mark Gilbert, Jason Wong, Mark W Tyndall, Naveed Zafar Janjua
While about a quarter of individuals clear their primary hepatitis C (HCV) infections spontaneously, clearance (spontaneous or treatment-induced) does not confer sterilizing immunity against a future infection. Since successful treatment does not prevent future infections either, an effective vaccine is highly desirable in preventing HCV (re)infection. However, development of an effective vaccine has been complicated by the diversity of HCV genotypes, and complexities in HCV immunological responses. Smaller studies on humans and chimpanzees reported seemingly opposing results regarding cross-neutralizing antibodies...
September 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28941881/historical-evolution-of-ideas-on-eclampsia-preeclampsia-a-proposed-optimistic-view-of-preeclampsia
#19
Pierre-Yves Robillard, Gustaaf Dekker, Gérard Chaouat, Marco Scioscia, Silvia Iacobelli, Thomas C Hulsey
Eclampsia (together with epilepsy) being the first disease ever written down since the beginning of writings in mankind 5000 years ago, we will make a brief presentation of the different major steps in comprehension of Pre-eclampsia. 1) 1840. Rayer, description of proteinuria in eclampsia, 2) 1897 Vaquez, discovery of gestational hypertension in eclamptic women, 3) In the 1970's, description of the "double" trophoblastic invasion existing only in humans (Brosens & Pijnenborg,), 4) between the 1970's and the 1990's, description of preeclampsia being a couple disease...
September 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28934209/microbial-translocation-is-correlated-with-hiv-evolution-in-hiv-hcv-co-infected-patients
#20
Jean-Jacques Tudesq, Catherine Dunyach-Remy, Christophe Combescure, Régine Doncesco, Didier Laureillard, Jean-Philippe Lavigne, Albert Sotto
Microbial translocation (MT) is characterized by bacterial products passing into the blood through the gut barrier and is a key phenomenon in the pathophysiology of Human Immunodeficiency Virus (HIV) infection. MT is also associated with liver damage in Hepatitis C Virus (HCV) patients. The aim of the study was to assess MT in plasma of HIV-HCV co-infected patients. 16S rDNA (16 S Ribosomal DNA subunit) marker and other markers of MT such as Lipopolysaccharide (LPS)-binding protein (LBP), soluble CD14 (sCD14), intestinal fatty acid binding protein (I-FABP) were used...
2017: PloS One
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