Margarita Dehesa-Violante

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Hepatitis B and C virus infections constitute a significant health problem in Latin America. Approximately 400,000 new cases of hepatitis B per year and 10 million people infected with hepatitis C are estimated to occur. HBV and HCV genotype distribution may reflect the different patterns of migration to the Americas: Genotype F and H of HBV correspond to(More)
The evolution of treatment of chronic hepatitis C virus infection has led to improved therapeutic efficacy. However, a major problem is the presence of side effects that require modification or withdrawal of drug therapy in 15-20% of cases. This could potentially influence the lack of sustained viral response in 50% of the cases. Side effects are common,(More)
Pneumocystis jirovecii pneumonia (PCP) is a potential complication of immunosuppression. Crohn's disease (CD) is an immune granulomatous disorder characterized by transmural inflammation that can affect any part of the gastrointestinal tract. Its treatment is based on steroids and immunosuppressants but in non-responders, biologic compounds such as(More)
We present two cases of acute liver injury resulting from consumption of wild mushrooms. The first case was a male who developed acute hepatitis after ingestion of diverse mushrooms including Amanita species. His clinical course was favorable with complete recovery of liver function. The second case was a male who developed acute liver failure (ALF) after(More)
Treatment with polyethylene glycol-modified interferon alfa-2a (peginterferon) alone produces significantly higher sustained antiviral responses than treatment with interferon alfa-2a alone in patients with chronic hepatitis C virus (HCV) infection. We compared the efficacy and safety of peginterferon alfa-2a plus ribavirin, interferon alfa-2b plus(More)
BACKGROUND AND AIMS The IL28B single nucleotide polymorphism (SNP) rs12979860 is a major predictor of treatment outcomes in hepatitis C virus (HCV) infection, but its distribution widely varies among populations and ethnicities. We undertook this study to investigate the distribution of IL28B SNP rs12979860 in Mexican patients with HCV infection and to(More)
With only a third of Latinos achieving sustained virologic response (SVR), there is a need for enhanced HCV treatment. Amantadine has been proposed to improve response rates in addition to standard therapy with peginterferon α and ribavirin. Our objective is to evaluate whether triple therapy with amantadine improves SVR rates in this special population.(More)
BACKGROUND Worldwide HCV studies have documented its large genetic variability; HCV has major genetic groups called genotypes that are designated from 1 to 6, as well as > 50 subtypes. This is very important considering that treatment response varies according to genotype. The purpose of this trial was to ascertain prevalence of HCV genotypes in a group of(More)
OBJECTIVES Little is known concerning the magnitude of reinfection versus recrudescence of Helicobacter pylori (H. pylori) infection after eradication treatment. The aims of this study were to determine the magnitude of H. pylori reinfection versus recrudescence, and to identify possible risk factors for reinfection. METHODS Children and adults with upper(More)
BACKGROUND It has been suggested that liver cirrhosis (LC), regardless of etiology, may be associated with anatomical cardiac alterations. OBJECTIVE To describe the frequency and type of macroscopical anatomic cardiac abnormalities present in alcoholic and non-alcoholic cirrhotic patients in an autopsy series. MATERIAL AND METHODS The autopsy records(More)