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acut viral hepatitis b

U Sixdorf, E Märker-Hermann
Viral arthritis and vasculitis are important differential diagnoses primarily in patients with acute polyarticular arthritis in association with fever and rash, in populations specially at risk and in returning travellers. Parvovirus B19 is the most frequent cause of viral arthritis in Europe, whereas rubella, hepatitis B and C viruses have become less common. Due to worldwide tourism arthritogenic alphaviruses, which are transmitted by mosquito vectors have come into the focus of tropical medicine and rheumatology...
October 19, 2016: Zeitschrift Für Rheumatologie
Jeong Eun Song, Do Young Kim
Hepatitis B virus (HBV) infection is a major global health problems leading to severe liver disease such as cirrhosis and hepatocellular carcinoma (HCC). HBV is a circular, partly double-stranded DNA virus with various serological markers: hepatitis B surface antigen (HBsAg) and anti-HBs, anti-HBc IgM and IgG, and hepatitis B e antigen (HBeAg) and anti-HBe. It is transmitted by sexual, parenteral and vertical route. One significant method to diminish the burden of this disease is timely diagnosis of acute, chronic and occult cases of HBV...
September 2016: Annals of Translational Medicine
Natali Abeywickrama-Samarakoon, Jean-Claude Cortay, Paul Dény
PURPOSE OF REVIEW: To highlight new concepts and therapeutic approaches concerning hepatitis D virus (HDV) infection. RECENT FINDINGS: Common receptor for hepatitis B virus (HBV) and HDV has been elucidated, deciphering of HDV replication is still in progress, preliminary results of phase II proof-of-concept clinical assays for entry inhibitors and cellular farnesyl transferase inhibitors are now available. SUMMARY: Hepatitis D infection remains a severe acute and chronic liver illness with the only currently approved therapy (Peg-αIFN) achieving disappointingly low rates of sustained viral response and clinical improvement...
October 7, 2016: Current Opinion in Infectious Diseases
Raquel Núñez-Ramos, Soledad Montoro, Marcello Bellusci, María Rosa Del Fresno-Valencia, Marta Germán-Díaz, Pedro Urruzuno, Enrique Medina, Javier Manzanares
PURPOSE: The aims of this study were to analyze the characteristics of patients with acute liver failure (ALF) in our center and evaluate the prognostic value of the Pediatric End-Stage Liver Disease (PELD) score calculated at admission. PATIENTS AND METHODS: A retrospective analysis of patients with ALF younger than 15 years between 2005 and 2013 was performed. Information collected included age, sex, etiology of ALF, laboratory tests, PELD score, stage of encephalopathy, and need for liver support devices such as MARS and/or liver transplant (LT) and survival...
September 30, 2016: Pediatric Emergency Care
Bertram Bengsch, Kyong-Mi Chang
Hepatitis B virus (HBV) infection is a major global health challenge. HBV can cause significant morbidity and mortality by establishing acute and chronic hepatitis. Approximately 250 million people worldwide are chronically infected, and more than 2 billion people have been exposed to HBV. Since the discovery of HBV, the advances in our understanding of HBV virology and immunology have translated into effective vaccines and therapies for HBV infection. Although current therapies successfully suppress viral replication but rarely succeed in viral eradication, recent discoveries in HBV virology and immunology provide exciting rationales for novel treatment strategies aiming at HBV cure...
November 2016: Clinics in Liver Disease
Alberto Zanetto, Alberto Ferrarese, Ilaria Bortoluzzi, Patrizia Burra, Francesco Paolo Russo
The hepatitis B virus (HBV) infects more than 260 million people globally, with increasing incidence, especially in developing countries. Despite antiviral therapies, HBV-related end-stage liver disease remains one of the most important indications for liver transplantation worldwide. Although new available treatments have improved the outcome of patients with both compensated and decompensated liver disease in some specific clinical settings as acute-on-chronic liver failure mortality is still high. Moreover, the incidence of HBV-related hepatocellular carcinoma (HCC) seems to be increasing and represents a major challenge for the transplant team...
October 14, 2016: Annals of Transplantation: Quarterly of the Polish Transplantation Society
Marc Heincelman, Nithin Karakala, Don C Rockey
Acute lymphoblastic leukemia (ALL) in adults is a relatively rare malignancy. The typical presentation includes signs and symptoms associated with bone marrow failure, including fevers, infections, fatigue, and excessive bruising. In this article, we report an unusual systemic presentation of ALL in a previously healthy 18-year-old man. He initially presented with several-day history of nausea and vomiting, 10-pound weight loss, and right upper quadrant abdominal pain with evidence of acute hepatocellular liver injury (elevations in aspartate aminotransferase/alanine aminotransferase) and elevation in serum creatinine...
July 2016: Journal of Investigative Medicine High Impact Case Reports
Sanjay B Rathod, Anuradha S Tripathy
BACKGROUND AND AIM: Literature on the role of Regulatory T cells (Tregs) in acute viral infections is limited. Having established that the Tregs in self-limiting hepatitis E infection are elevated and functional, this study has focused on characterizing the specificity, phenotypes and identifying the molecules or factors responsible for enhancement of Treg cells and abrogation of Treg-mediated suppression in hepatitis E. METHODS: HEV rORF2p specific (a) Treg frequency, subset analysis and expression of surface and intracellular markers on Tregs and CFSE based functional analysis by flow cytometry (b) key cytokines quantification by multiplex (c) suppressive functional assay in the presence of anti-TGF-β1 or anti-IL-10 or both antibodies or Transwell insert or in combination were performed on samples from 58 acute patients (AVH-E), 45 recovered individuals from hepatitis E and 55 controls...
October 6, 2016: Human Immunology
Hamid Kalantari, Faezeh Ferdowsi, Majid Yaran
BACKGROUND: The absence of a detectable hepatitis B surface antigen (HBsAg) with or without hepatitis B core antibody (anti-HBc) or hepatitis B surface antibody (anti-HBs) in the presence of hepatitis B virus-DNA (HBV-DNA) is defined as occult HBV infection. This study was aimed to evaluate the prevalence of occult HBV infection in patients receiving hemodialysis (HD) in Isfahan, Iran. MATERIALS AND METHODS: This cross sectional study was done on 400 patients without acute or chronic HBV infection with end-stage renal disease undergoing regular HD...
2016: Advanced Biomedical Research
Laura Cummins Meals, Stephen R Ross, Curtis Eng, Kathryn C Gamble
Hepatitis B virus causes horizontally transmitted infectious hepatopathy of primates and may progress to hepatocellular carcinoma. Historically, a small number of chimpanzees ( Pan troglodytes ) living in accredited North American zoos have been confirmed with positive hepatitis B serology consistent with exposure. However, the overall status for this population and the interpretation of these individual test results have not been established previously. The current U.S. zoo-housed population (n = 259) was assessed serologically for hepatitis B by surface protein antigen (HbsAg) and surface antibodies (anti-Hbs)...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
Gamal Hasan, Asaad Assiri, Naglaa Marzuuk, Enas Daef, Sayed Abdelwahab, Ahmed Ahmed, Ismail Mohamad, Ayman Al-Eyadhy, Ali Alhaboob, Mohamad-Hani Temsah
OBJECTIVE: To describe the characteristics of hepatitis E virus (HEV) infection in a cohort of children from Upper Egypt using data from a large multicentre prospective study of acute viral hepatitis (AVH). METHODS: Data from subjects aged 2-18 years with AVH or close contacts of those with AVH found to have asymptomatic AVH were included in the analysis. Information concerning medical history, clinical examination, liver function tests and screening for hepatotropic viruses was recorded and analysed...
September 29, 2016: Journal of International Medical Research
Justine Perrin, Julien Carvelli, Bertrand Gondouin, Laurent Daniel, Megan Fraisse, Céline Gaudon, Fouad Bouzana, Henri Vacher-Coponat, Julie Moussi-Francès, Bertrand Dussol, Noémie Jourde-Chiche
Renal involvement of systemic vasculitides is an emergency in nephrology. Although it has become very rare, the diagnosis of polyarteritis nodosa must be considered in some patients. A 70-year-old patient, previously healthy, presented with acute renal failure and malignant hypertension and abundant albuminuria. Subcutaneous nodule, orchitis and mononeuritis appeared subsequently. The search for auto-immunity or viral infection was negative. Markers of thrombotic microangiopathy, present initially, resolved after blood pressure control...
September 24, 2016: Néphrologie & Thérapeutique
A A Eltahla, C Rodrigo, B Betz-Stablein, J Grebely, T Applegate, F Luciani, J Schinkel, G J Dore, K Page, J Bruneau, M D Morris, A L Cox, A Y Kim, N H Shoukry, G M Lauer, L Maher, M Hellard, M Prins, A R Lloyd, R A Bull
Several direct-acting antivirals (DAAs) have been approved for the treatment of chronic hepatitis C virus (HCV) infections, opening the door to highly effective interferon-free treatment regimens. Resistance-associated substitutions (RASs) have been reported both in treatment-naïve patients and following treatment with protease (NS3), phosphoprotein (NS5A) and polymerase (NS5B) inhibitors. The prevalence of naturally occurring RASs in untreated HCV-infected individuals has mostly been analysed in those infected with genotype 1 (GT1), in the late phase of infection, and only within limited regions of the genome...
September 25, 2016: Journal of Viral Hepatitis
Alexandru Oanţă, Marius Irimie
In the last twenty years, the prevalence of individuals with tattoos in the general population has increased in Europe (1) as well as in Australia (2) and the United States of America (3). A series of complications such as acute inflammatory reactions, allergic contact dermatitis (4,5), photoinduced, lichenoid, and granulomatous reactions (6, 7), pseudolymphoma (8), pseudoepitheliomatous hyperplasia (9), skin infections (6), and skin cancers (10) may occur on tattoos. Infectious complications on tattoos include bacterial infections (pyoderma, leprosy, syphilis, cutaneous tuberculosis, mycobacteriosis) (11-14), viral infections (molluscum contagiosum, warts, herpes simplex, hepatitis B and C) (15-17), and fungal infections (sporotrichosis, dermatophytosis) (18,19)...
August 2016: Acta Dermatovenerologica Croatica: ADC
Sukriti Sukriti, Nirupma Trehanpati, Manoj Kumar, Chandana Pande, Syed S Hissar, Shiv Kumar Sarin
BACKGROUND: Dendritic cells (DCs) promote pathogen recognition, uptake and presentation of antigen through DC-specific intercellular adhesion molecule 3-grabbing non-integrin (DC-SIGN) and toll-like receptors (TLRs). AIMS AND OBJECTIVES: We aimed to study temporal changes in DCs, TLRs and DC-SIGN during acute viral hepatitis B (AVHB) infection and compare them to chronic (CHB) and to investigate the earliest time point of activated pathogen recognition receptors in hepatitis B viral infection...
September 22, 2016: Hepatology International
A Brown, J S Halliday, L Swadling, R Madden, R Bendall, J G Hunter, J Maggs, P Simmonds, D B Smith, L Vine, C McLaughlin, J Collier, D Bonsall, K Jeffery, S J Dunachie, P Klenerman, J Izopet, N Kamar, H R Dalton, E Barnes
BACKGROUND AND AIMS: The interplay between host anti-viral immunity and immunopathology during Hepatitis E virus (HEV) infection determines important clinical outcomes. We characterised the specificity, functionality and durability of host T-cell responses against the full-length HEV virus and assessed a novel "Quantiferon" assay for the rapid diagnosis of HEV infection. METHODS: 89 volunteers were recruited from Oxford, Truro (UK) and Toulouse (France) including 44 immune-competent patients with acute HEV infection, 18 HEV exposed immunosuppressed organ-transplant recipients (8 with chronic HEV), and 27 healthy volunteers...
September 15, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
M W Mazumder, A B Karim, M Rukunuzzaman, M A Rahman
Acute liver failure (ALF) is a rapidly progressive, potentially fatal syndrome resulting from rapid death or injury to a large proportion of hepatocytes, caused by a variety of insult, leaving insufficient hepatic paranchymal mass to sustain liver function. The aetiology of ALF varies according to the age of patient and development of the country. The outcome of ALF also varies according to aetiology: survival is better in paracetamol poisoning whereas it is poor in metabolic diseases. The present study was undertaken to observe the underlying aetiology and outcome of ALF in children under 18 years of age admitted at the department of Paediatric Gastroenterology & Nutrition, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh...
July 2016: Mymensingh Medical Journal: MMJ
Danielle M Yugo, Ruediger Hauck, H L Shivaprasad, Xiang-Jin Meng
Viral hepatitis in poultry is a complex disease syndrome caused by several viruses belonging to different families including avian hepatitis E virus (HEV), duck hepatitis B virus (DHBV), duck hepatitis A virus (DHAV-1, -2, -3), duck hepatitis virus Types 2 and 3, fowl adenoviruses (FAdV), and turkey hepatitis virus (THV). While these hepatitis viruses share the same target organ, the liver, they each possess unique clinical and biological features. In this article, we aim to review the common and unique features of major poultry hepatitis viruses in an effort to identify the knowledge gaps and aid the prevention and control of poultry viral hepatitis...
September 2016: Avian Diseases
Hao Li, Chunyu Sheng, Hongbo Liu, Guangze Liu, Xinying Du, Juan Du, Linsheng Zhan, Peng Li, Chaojie Yang, Lihua Qi, Jian Wang, Xiaoxia Yang, Leili Jia, Jing Xie, Ligui Wang, Rongzhang Hao, Dongping Xu, Yigang Tong, Yusen Zhou, Jianjun Zhou, Yansong Sun, Qiao Li, Shaofu Qiu, Hongbin Song
Chronic hepatitis B infection remains incurable because HBV cccDNA can persist indefinitely in patients recovering from acute HBV infection. Given the incidence of HBV infection and the shortcomings of current therapeutic options, a novel antiviral strategy is urgently needed. To inactivate HBV replication and destroy the HBV genome, we employed genome editing tool CRISPR/Cas9. Specifically, we found a CRISPR/Cas9 system (gRNA-S4) that effectively targeted the HBsAg region and could suppress efficiently viral replication with minimal off-target effects and impact on cell viability...
2016: International Journal of Biological Sciences
Ashish Goyal, John M Murray
Cell-free virus is a well-recognized and efficient mechanism for the spread of hepatitis B virus (HBV) infection in the liver. Cell-to-cell transmission (CCT) can be a more efficient means of virus propagation. Despite experimental evidence implying CCT occurs in HBV, its relative impact is uncertain. We develop a 3-D agent-based model where each hepatocyte changes its viral state according to a dynamical process driven by cell-free virus infection, CCT and intracellular replication. We determine the relative importance of CCT in the development and resolution of acute HBV infection in the presence of cytolytic (CTL) and non-CTL mechanisms...
2016: PloS One
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