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https://www.readbyqxmd.com/read/28927006/emerging-roles-of-heparanase-in-viral-pathogenesis
#1
REVIEW
Neel Thakkar, Tejabhiram Yadavalli, Dinesh Jaishankar, Deepak Shukla
Heparan sulfate (HS) is ubiquitously expressed on mammalian cells. It is a polysaccharide that binds growth factors, cytokines, and chemokines, and thereby controls several important physiological functions. Ironically, many human pathogens including viruses interact with it for adherence to host cells. HS functions can be regulated by selective modifications and/or selective cleavage of the sugar chains from the cell surface. In mammals, heparanase (HPSE) is the only known enzyme capable of regulating HS functions via a selective endoglycosidase activity that cleaves polymeric HS chains at internal sites...
September 18, 2017: Pathogens
https://www.readbyqxmd.com/read/28926748/association-between-infection-burden-and-adult-height
#2
Dawson W Hedges, Andrew N Berrett, Lance D Erickson, Bruce L Brown, Shawn D Gale
Although highly heritable, adult height is also associated with numerous environmental factors, including exposure to infection. Particularly in developing regions of the world, infection burden appears to slow growth during childhood. Using a large database representative of the US population, we examined associations between adult height and leg length and an infection-burden index based on past exposure to Toxocara species, Toxoplasmosis gondii, cytomegalovirus, hepatitis A, hepatitis B, hepatitis C, herpes simplex virus 1, and herpes simplex virus 2...
September 2, 2017: Economics and Human Biology
https://www.readbyqxmd.com/read/28926562/generics-for-the-treatment-of-hepatitis-c-in-monoinfected-and-hiv-coinfected-patients-pros-and-cons
#3
Dario Cattaneo, Alessandro Fossati, Chiara Resnati, Massimo Galli, Cristina Gervasoni
The treatment of hepatitis C virus in monoinfected and HIV-coinfected patients has greatly changed over recent years as a result of the introduction of direct-acting antiviral agents (DAAs), which have revolutionized clinical outcomes and led to sustained virological response rates above 90-95%. The discovery of new molecules and the subsequent competition between pharmaceutical companies, together with the negotiated price policies pursued by many national health systems, have led to a gradual reduction in the cost of DAAs, and expand their use to an increasing number of patients, including those with mild liver damage...
September 19, 2017: AIDS Reviews
https://www.readbyqxmd.com/read/28926404/metabolic-health-across-the-body-mass-index-spectrum-in-hiv-infected-and-hiv-uninfected-men
#4
Jordan E Lake, Xiuhong Li, Frank J Palella, Kristine M Erlandson, Dorothy Wiley, Lawrence Kingsley, Lisa P Jacobson, Todd T Brown
OBJECTIVES: In the general population, metabolic health (MH) often declines as body mass index (BMI) increases. However, some obese individuals maintain MH. HIV and antiretroviral therapy (ART) have been associated with metabolic disturbances. We hypothesized that HIV-infected (HIV+) men on suppressive ART experience less MH than HIV-uninfected (HIV-) men across all BMI categories. DESIGN/METHODS: In a cross-sectional analysis of 1018 HIV+ and 1092 HIV- men enrolled in the Multicenter AIDS Cohort Study, Poisson regression with robust variance determined associations between HIV serostatus and MH prevalence (defined as meeting 2 of 5 NCEP/ATP III metabolic syndrome criteria), adjusting for age, race, BMI category, smoking and hepatitis C virus infection status...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28926400/hepatitis-b-hepatitis-c-and-mortality-among-hiv-positive-individuals
#5
Alicia C Thornton, Sophie Jose, Sanjay Bhagani, David Chadwick, David Dunn, Richard Gilson, Janice Main, Mark Nelson, Alison Rodger, Chris Taylor, Elaney Youssef, Clifford Leen, Mark Gompels, Stephen Kegg, Achim Schwenk, Caroline Sabin
OBJECTIVES: To compare rates of all-cause, liver-related and AIDS-related mortality among individuals who are HIV mono-infected with those co-infected with HIV and hepatitis B (HBV) and/or hepatitis C (HCV) viruses. DESIGN: An ongoing observational cohort study collating routinely collected clinical data on HIV-positive individuals attending for care at HIV treatment centres throughout the UK. METHODS: Individuals were included if they had been seen for care from 2004 onwards and had tested for HBV and HCV...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28926398/association-of-a-3-untranslated-region-polymorphism-in-pcsk9-with-hiv-viral-load-and-cd4-levels-in-hiv-hepatitis-c-virus-co-infected-women
#6
Mark H Kuniholm, Hua Liang, Kathryn Anastos, Deborah Gustafson, Seble Kassaye, Marek Nowicki, Beverly E Sha, Emilia J Pawlowski, Stephen J Gange, Bradley E Aouizerat, Tatiana Pushkarsky, Michael I Bukrinsky, Vinayaka R Prasad
OBJECTIVE: To assess variation in genes that regulate cholesterol metabolism in relation to the natural history of HIV infection. DESIGN: Cross-sectional and longitudinal analysis of the Women's Interagency HIV Study (WIHS). METHODS: We examined 2,050 single nucleotide polymorphisms (SNPs) in 19 genes known to regulate cholesterol metabolism in relation to HIV viral load and CD4 T cell levels in a multiracial cohort of 1,066 antiretroviral therapy (ART) naïve women...
September 18, 2017: AIDS
https://www.readbyqxmd.com/read/28926326/prevalence-of-hepatitis-a-virus-antibody-in-portuguese-travelers-a-new-paradigm
#7
Sónia Rocha, Sandra Tejo, Eugénia Ferreira, Luís Trindade, Eduardo Rabadão, Nuno Marques, José Saraiva da Cunha
INTRODUCTION: In Portugal, the prevalence of hepatitis A virus infection has decreased in the past decades, especially in young adults. The aim of this study was to detect the prevalence of antibody to hepatitis A virus in a population observed in our Travel Clinic. MATERIAL AND METHODS: Antibodies against hepatitis A, hepatitis B, hepatitis C and human immunodeficiency virus were tested using standard enzyme immunoassay in patients older than 18. The exclusion criteria were: prior vaccination for hepatitis A virus, previous diagnosis of infection with hepatitis B virus, hepatitis C virus and/or human immunodeficiency virus, foreign travelers and long-term expatriates...
August 31, 2017: Acta Médica Portuguesa
https://www.readbyqxmd.com/read/28926120/glecaprevir-pibrentasvir-for-hcv-genotype-3-patients-with-cirrhosis-and-or-prior-treatment-experience-a-partially-randomized-phase-iii-clinical-trial
#8
David Wyles, Fred Poordad, Stanley Wang, Laurent Alric, Franco Felizarta, Paul Y Kwo, Benedict Maliakkal, Kosh Agarwal, Tarek Hassanein, Frank Weilert, Samuel S Lee, Jens Kort, Sandra S Lovell, Ran Liu, Chih-Wei Lin, Tami Pilot-Matias, Preethi Krishnan, Federico J Mensa
BACKGROUND: This study assessed the efficacy and safety of ribavirin (RBV)-free coformulated glecaprevir/pibrentasvir (G/P) in patients with hepatitis C virus (HCV) genotype (GT) 3 infection with either prior treatment experience and/or compensated cirrhosis, a patient population with limited treatment options. METHODS: SURVEYOR-II, Part 3 was a partially-randomized, open-label, multicenter, phase 3 study. Treatment-experienced (prior interferon (IFN) or pegIFN ± ribavirin or SOF plus ribavirin ± pegIFN therapy) patients without cirrhosis were randomized 1:1 to receive 12 or 16 weeks of G/P (300 mg/120 mg) once daily...
September 19, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28925327/treatment-of-chronic-hepatitis-c-virus-infection-with-crushed-ledipasvir-sofosbuvir-administered-via-a-percutaneous-endoscopic-gastrostomy-tube
#9
Lauren Jindracek, Jennifer Stark
INTRODUCTION: Ledipasvir/sofosbuvir (Harvoni®) is a fixed-dose tablet indicated for the treatment of chronic hepatitis C virus (HCV) infection. There are currently no data available on the safety and efficacy of crushed ledipasvir/sofosbuvir tablets. CASE SUMMARY: This report describes the first documented case of successful treatment of chronic HCV infection in a patient crushing ledipasvir/sofosbuvir for administration via a percutaneous endoscopic gastrostomy (PEG) tube...
January 1, 2017: Journal of Pharmacy Practice
https://www.readbyqxmd.com/read/28925068/when-and-how-can-nephrologists-treat-hepatitis-c-virus-infection-in-dialysis-patients
#10
REVIEW
Maya I Davis, Donald F Chute, Raymond T Chung, Meghan E Sise
Hepatitis C virus (HCV) infection, a major cause of end-stage liver disease, is a common comorbidity in patients on dialysis and causes increased morbidity and mortality. Historically HCV has been extremely difficult to cure with interferon and ribavirin-based therapies, which are also associated with significant side effects, and few dialysis patients ever received HCV treatment. However, in the last 4 years, interferon-free direct-acting antiviral therapies have been approved, and several combinations have been studied in dialysis patients...
September 18, 2017: Seminars in Dialysis
https://www.readbyqxmd.com/read/28924485/hypogonadotropic-hypogonadism-in-human-immunodeficiency-virus-infected-men-uncommonly-low-testosterone-levels
#11
Ana Coelho Gomes, José Maria Aragüés, Sílvia Guerra, Joana Fernandes, Mário Rui Mascarenhas
Hypogonadotropic hypogonadism (HH) is common and occurs prematurely in HIV-infected men. However, HH with very low testosterone has not been described. Three men with normal pubertal development and HIV1 diagnosis at the ages of 22, 34 and 35 years. All complained of decreased libido, anejaculation and erectile dysfunction thirteen years, six months and one year after HIV diagnosis, respectively. Two had depressive syndrome and two were treated with antiretroviral therapy. Laboratory tests revealed isolated HH in all...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28924449/outcomes-after-sofosbuvir-containing-regimens-for-hepatitis-c-virus-in-patients-with-decompensated-cirrhosis-a-real-world-study
#12
Fanpu Ji, Wenjun Wang, Shuangsuo Dang, Shengbang Wang, Burong Li, Dan Bai, Wenxue Zhao, Hong Deng, Changyin Tian, Zongfang Li
BACKGROUND: Direct-acting antivirals have been used for decompensated cirrhotic patients with hepatitis C virus (HCV) infection. However, the benefits in Chinese patients with decompensated cirrhosis are unclear. METHODS: Thirty patients with HCV infection and decompensated cirrhosis were administered sofosbuvir-containing regimens at our hospital between April and December 2015. The efficacy and safety of the treatments was determined by sustained virological response at week 12 (SVR 12), change of liver function and adverse events...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28924346/co-delivery-of-polyinosinic-polycytidylic-acid-and-flagellin-by-poly-lactic-co-glycolic-acid-mps-synergistically-enhances-immune-response-elicited-by-intranasally-delivered-hepatitis-b-surface-antigen
#13
Xiaojing Dai, Jintian He, Ruxia Zhang, Guanghao Wu, Fangfang Xiong, Baohua Zhao
The aim of the present work was to investigate the synergistic effect between toll-like receptor (TLR) 3 ligand polyinosinic:polycytidylic acid (pI:C) and TLR5 ligand flagellin (FLN) on immune responses induced by nasally delivered hepatitis B virus surface antigen (HBsAg). Mannan and chitosan oligosaccharide-modified, pH-responsive poly(lactic-co-glycolic acid) (MC-PLGA) microparticles (MPs) containing HBsAg, FLN, pI:C or both ligands were prepared with a double-emulsion method. In vitro uptake experiments show that cellular uptake of MC-PLGA MPs by macrophages was through energy-dependent, receptor-mediated endocytosis mechanism...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28923653/effects-of-the-mammalian-target-of-rapamycin-inhibitor-everolimus-on-hepatitis-c-virus-replication-in%C3%A2-vitro-and-in%C3%A2-vivo
#14
A Frey, E-M Ecker, K Piras-Straub, A Walker, T G Hofmann, J Timm, B B Singer, G Gerken, K Herzer
BACKGROUND: The influence of immunosuppressants on hepatitis C virus (HCV) re-infection after liver transplantation, particularly mammalian target of rapamycin inhibitors, remains unclear. The aim of our study was to analyze the influence of everolimus (EVR) on HCV replication activity in the context of underlying molecular mechanisms, with focus on the pro-myelocytic leukemia protein (PML). METHODS: HCV viral load was recorded in 40 patients with post-transplant HCV re-infection before and 8 weeks after introduction of EVR...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923637/ledipasvir%C3%A2-sofosbuvir-for-liver-transplant-recipients-with-recurrent-hepatitis-c-a-systematic-review-and-meta-analysis
#15
H-T Liao, P Tan, J-W Huang, K-F Yuan
INTRODUCTION: Studies focusing on the efficacy and safety of ledipasvir (LDV) + sofosbuvir (SOF) therapy in liver transplant (LT) recipients with hepatitis C virus (HCV) recurrence are still limited. Therefore, the aim of our work was to perform a systematic review and meta-analysis to evaluate outcome data of LDV + SOF therapy in LT recipients. METHODS: Multiple databases were systematically searched for eligible studies. We included studies reporting sustained virological response 12 weeks after treatment (SVR12) and treatment-related adverse events (AEs) in LT recipients treated with LDV + SOF ± ribavirin (RBV) for HCV recurrence...
October 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/28923555/effects-of-chronic-hepatitis-c-infection-on-arterial-stiffness
#16
Chang-Hua Chou, Chin-Shan Ho, Wei-Chuan Tsai, Ming-Cheng Wang, Yau-Sheng Tsai, Ju-Yi Chen
Nonalcoholic fatty liver disease (NAFLD) is associated with increased arterial stiffness. Although chronic hepatitis C virus (HCV) infection was shown to be associated with metabolic disorder and chronic inflammation, the effects of chronic HCV infection on arterial stiffness remain unclear. This study recruited 221 patients including 32 normal controls, 72 NAFLD patients, and 117 subjects with HCV infection. Arterial stiffness was assessed by peripheral arterial stiffness index, Compliance Index (CI), and central arterial stiffness index, Stiffness Index derived from digital volume pulse by photoplethysmography...
August 26, 2017: Journal of the American Society of Hypertension: JASH
https://www.readbyqxmd.com/read/28923507/pentagalloylglucose-a-highly-bioavailable-polyphenolic-compound-present-in-cortex-moutan-efficiently-blocks-hepatitis-c-virus-entry
#17
Patrick Behrendt, Paula Perin, Nicolas Menzel, Dominic Banda, Stephanie Pfaender, Marco P Alves, Volker Thiel, Phillip Meulemann, Che C Colpitts, Luis M Schang, Florian W R Vondran, Anggakusuma, Michael P Manns, Eike Steinmann, Thomas Pietschmann
Approximately 142 million people worldwide are infected with hepatitis C virus (HCV). Although potent direct acting antivirals are available, high costs limit access to treatment. Chronic hepatitis C virus infection remains a major cause of orthotopic liver transplantation. Moreover, re-infection of the graft occurs regularly. Antivirals derived from natural sources might be an alternative and cost-effective option to complement therapy regimens for global control of hepatitis C virus infection. We tested the antiviral properties of a mixture of different Chinese herbs/roots named Zhi Bai Di Huang Wan (ZBDHW) and its individual components on HCV...
September 15, 2017: Antiviral Research
https://www.readbyqxmd.com/read/28923387/characterization-and-structure-activity-relationship-study-of-iminodipyridinopyrimidines-as-novel-hepatitis-c-virus-inhibitor
#18
Dong-Sik Park, Eunji Jo, Jihyun Choi, MyungEun Lee, Soohyun Kim, Hee-Young Kim, Jiyon Nam, Sujin Ahn, Jong Yeon Hwang, Marc Peter Windisch
Upon high-throughput screening of synthetic small molecule libraries with the infectious hepatitis C virus (HCV) cell culture system, we identified an iminodipyridinopyrimidine (IDPP) scaffold. IDPP did not inhibit HCV replication, but exhibited very potent inhibitory activity on early and late steps of HCV life cycle. Applying an intensive structure-activity relationship (SAR) study, a promising IDPP Lead compound (12c) with excellent potency (EC50 = 10 nM), high safety margin (SI > 2000), and an acceptable stability in human and rat liver microsomes (t1/2 >60 min) was identified...
September 6, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28922704/direct-acting-antivirals-for-chronic-hepatitis-c
#19
REVIEW
Janus C Jakobsen, Emil Eik Nielsen, Joshua Feinberg, Kiran Kumar Katakam, Kristina Fobian, Goran Hauser, Goran Poropat, Snezana Djurisic, Karl Heinz Weiss, Milica Bjelakovic, Goran Bjelakovic, Sarah Louise Klingenberg, Jian Ping Liu, Dimitrinka Nikolova, Ronald L Koretz, Christian Gluud
BACKGROUND: Millions of people worldwide suffer from hepatitis C, which can lead to severe liver disease, liver cancer, and death. Direct-acting antivirals (DAAs), e.g. sofosbuvir, are relatively new and expensive interventions for chronic hepatitis C, and preliminary results suggest that DAAs may eradicate hepatitis C virus (HCV) from the blood (sustained virological response). Sustained virological response (SVR) is used by investigators and regulatory agencies as a surrogate outcome for morbidity and mortality, based solely on observational evidence...
September 18, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28922464/molecular-dynamics-simulation-revealed-binding-of-nucleotide-inhibitors-to-zikv-polymerase-over-444-nanoseconds
#20
Abdo A Elfiky, Wael M Elshemey
In the year 2015, new Zika virus (ZIKV) broke out in Brazil and spread away in more than 80 countries. Scientists directed their efforts toward viral polymerase in attempt to find inhibitors that might interfere with its function. In this study, molecular dynamics simulation (MDS) was performed over 444 ns for a ZIKV polymerase model. Molecular docking (MD) was then performed every 10 ns during the MDS course to ensure the binding of small molecules to the polymerase over the entire time of the simulation...
September 18, 2017: Journal of Medical Virology
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