Autoimmune Hepatitis with Acute Presentation: Clinical, Biochemical, and Histological Features of 126 Patients.

Introduction: Autoimmune hepatitis (AIH) is a chronic liver disease with a relevant inflammatory component and an unknown etiology. Evidence for clinical characteristics and risk factors in large cohorts of patients with acute AIH (AAIH) is lacking. We clinically characterized patients with AAIH, the prevalence of a combined adverse outcome (death or liver transplantation (LT)), and its risk factors.

Effects of immunosuppressive drugs on COVID-19 severity in patients with autoimmune hepatitis.

Background: We investigated associations between baseline use of immunosuppressive drugs and severity of Coronavirus Disease 2019 (COVID-19) in autoimmune hepatitis (AIH).

Patients And Methods: Data of AIH patients with laboratory confirmed COVID-19 were retrospectively collected from 15 countries. The outcomes of AIH patients who were on immunosuppression at the time of COVID-19 were compared to patients who were not on AIH medication.

[Acute hepatitis C. Report of seven cases].

Hepatitis C virus infection is a major global public health problem. Treatment with direct-acting antivirals is intended to eradicate the chronic form of this infection by 2030. Although uncommon, the acute form of presentation is increasingly recognized, especially in some high-risk populations, such as men who have sex with men without protection.

Drug-induced liver injury: A management position paper from the Latin American Association for Study of the liver.

Idiosyncratic drug-induced liver injury (DILI) caused by xenobiotics (drugs, herbals and dietary supplements) is an uncommon cause of liver disease presenting with a wide range of phenotypes and disease severity, acute hepatitis mimicking viral hepatitis to autoimmune hepatitis, steatosis, fibrosis or rare chronic vascular syndromes. Disease severity ranges from asymptomatic liver test abnormalities to acute liver failure. DILI has been traditionally classified in predictable or intrinsic (dose-related) or unpredictable (not dose-related) mechanisms.

Liver transplantation in acute liver failure due to Hepatitis B. Two clinical cases.

Hepatitis B virus (HBV) related acute liver failure (ALF) is uncommon in our region, and there is limited HBV literature regarding the optimal management of these cases. In this article, we report two clinical cases of young men who have sex with men (MSM), both developed severe acute hepatitis caused by HBV, progressed to ALF and afterward required liver transplantation. Antiviral post-transplant treatment included entecavir without Hepatitis B Immunoglobulin (HBIG), and immunosuppression therapy with steroids, tacrolimus, and mycophenolate.

[Hepatitis E virus seroprevalence in blood donors in a university hospital in Chile].

In Chile, there are few studies about seroprevalence of IgG antibodies against hepatitis E virus (HEV) in blood banks, between 4 and 8%. The development of new techniques with greater sensitivity and specificity, account for an increase in the seroprevalence of HEV in various countries, the current status in Chile being unknown. In the present study, we determined the seroprevalence of anti-HEV IgG in blood donors of the Clinical Hospital University of Chile, with last generation ELISA techniques.

[Interferon Lambda 4 RS12979860 C>T polymorphism is not associated with liver fibrosis in patients with hepatitis C].

Background: Host genetic predispositions may be important determinants of liver fibrosis in patients with chronic hepatitis C (CHC). The association between Interferon-L 4 (IFNL4) rs12979860 C>T polymorphism and risk of liver fibrosis in CHC is contradictory.

Aim: To evaluate the impact of IFNL4 rs12979860 polymorphism on the risk of fibrosis in patients with CHC.

genotype is associated with cirrhosis or transition to cirrhosis in treatment-naive patients with chronic HCV genotype 1 infection: the international observational Gen-C study.

Background And Purpose: Contradictory data exist on the association between host interleukin-28B () rs12979860 genotype and liver fibrosis in patients with chronic hepatitis C (CHC). This large, international, observational study (NCT01675427/MV25600) investigated relationships between rs12979860 genotype and liver fibrosis stage in CHC patients.

Methods: A total of 3003 adult, treatment-naive CHC patients were enrolled into the study.

Replication of a chronic hepatitis B virus genotype F1b construct.

Genotype F is one of the less-studied genotypes of human hepatitis B virus, although it is widely distributed in regions of Central and South American. Our previous studies have shown that HBV genotype F is prevalent in Chile, and phylogenetic analysis of its full-length sequence amplified from the sera of chronically infected patients identified it as HBV subgenotype F1b. We have previously reported the full-length sequence of a HBV molecular clone obtained from a patient chronically infected with genotype F1b.

[Hepatitis E virus seroprevalence: a reappraisal].

Reported seroprevalence of hepatitis E virus (HEV) in developed countries is between 0.3-53%. Published data relies on the assays used and its technical performance.

[Seroconversion in response to a reinforced primary hepatitis B vaccination in children with cancer].

Introduction: Immune response against vaccine antigens may be impaired in children with cancer. The aim of this study was to evaluate the seroconversion response against hepatitis B vaccination (HBV) at the time of chemotherapy onset and/or remission in children with cancer.

Patients And Method: Prospective, two-centre, controlled, non-randomised study conducted on children recently diagnosed with cancer, paired with healthy subjects.

[Adverse events associated with the treatment of inflammatory bowel disease].

Background: The purpose of inflammatory bowel disease (IBD) treatment is to achieve resolution of symptoms and remission of disease with a minimum of adverse events (AE).

Aim: To report AE of different prescriptions used for the treatment of IBD.

Material And Methods: Analysis of a registry of patients with IBD held at a private clinic from 1976 to 2013.

[Inflammatory bowel disease. Experience in 316 patients].

Background: The incidence and prevalence of Inflammatory Bowel Disease (IBD) has increased.

Aim: To determine demographic and clinical characteristics of patients with IBD in a Chilean private hospital.

Patients And Methods: Review of a prospective registry of patients with IBD, started on 2012.

Full-genome sequence of a hepatitis B virus genotype f1b clone from a chronically infected chilean patient.

The hepatitis B virus (HBV) is a DNA virus belonging to the Hepadnaviridae family. Viral isolates have been classified into 10 genotypes, named from A to J, and several subtypes. We report the full-genome sequence from a single molecular clone of HBV genotype F1b, amplified from a chronically infected Chilean patient.

Genotype F of hepatitis B: response to interferon.

Background: The relevance of HBV genotype diversity on interferon (IFN) therapy outcome in chronic hepatitis B patients has recently been highlighted. Data available for genotype F is poor. The aim of this work was to analyse the response of HBV genotype F to treatment with IFN.