Publications by authors named "Marco A Olivera Martinez"

Primary biliary cholangitis (PBC) is a chronic cholestatic liver disease with presumed autoimmune etiology. Current treatment options include ursodeoxycholic acid, obeticholic acid, and fibrate, which target mainly cholestasis. There is no effective therapy against autoimmune or hepatic fibrosis components.

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A 59-year-old male with a history of hepatitis C cirrhosis and history of hepatitis B exposure presented 8 months after orthotopic liver transplant (LT) with fever, fatigue, myalgia, night sweats, nonproductive cough, and shortness of breath. Bone marrow biopsy for pancytopenia was positive for Epstein-Barr virus (EBV) DNA. Lymph node biopsy for lymphadenopathy on imaging showed human herpes virus 8 (HHV8) associated Castleman's disease.

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Background: Induction immunosuppression with anti-thymocyte globulin (ATG) provides potential benefits after liver transplantation (LT). However, its use in patients with LT and hepatitis C (HCV) is controversial.

Aim: To evaluate the 1- and 2-year patient survival and HCV recurrence rate in patients receiving ATG during the induction phase of immunosuppression (IPI) after LT.

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Background And Aims: We undertook this study to evaluate the virological response to and presence of adverse events to natural interferon α (nIFNα; Multiferon®) treatment in previously nonresponsive Mexican patients chronically infected with genotype 1 hepatitis C.

Methods: Thirty-nine patients received a 4-week induction of 5 days/week of 6 MU nIFNα plus weight-based ribavirin followed by 3 MU of nIFNα three times a week for 44 weeks. The relationship between viral response and incidence of adverse events was analyzed.

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Aim: To assess the usefulness of FibroTest to forecast scores by constructing decision trees in patients with chronic hepatitis C.

Methods: We used the C4.5 classification algorithm to construct decision trees with data from 261 patients with chronic hepatitis C without a liver biopsy.

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Hepatitis C represents more than 35% of liver transplant candidates worldwide. Meanwhile, hepatitis B continues to be an important cause of end-stage liver disease and hepatocellular carcinoma in Asia and Africa. Recurrent viral liver disease is a significant event after liver transplantation and continues to be one of the main causes of graft dysfunction and loss in the middle and long-term follow-up.

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Background: Digestive cancer is an important mortality cause in Mexico. In the past decades a change in the frequency of digestive malignancies has been observed.

Aim: To evaluate the frequency of digestive malignancies in four hospitals in México City during a 25 years period.

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The history of immunosuppression is a long one. From the utilization of steroids and azathioptine in the 50's to the design of humanized molecules that specifically block cell surface receptors. Liver transplantation is one of the procedures that benefit the most with the development of new immunosuppressors and is also one of the reasons to create a new branch in research and clinical practice: transplant medicine.

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Introduction: Currently, interferon alfa and ribavirin are the mainstay of therapy for patients with chronic hepatitis C. Recently the pegylation of interferon has allowed a once weekly application, resulting in an increased sustained viral response rate. The analysis of serum HCV dynamics has been shown to be useful in predicting clinical effects and optimizing the treatment regimen.

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There is always a second infection with HCV during the post-transplant period. Recurrence of the disease is one of the main present therapeutic challenges because there are still many questions to answer. Some transplant groups suggest that recurrence is earlier in certain circumstances, especially in face of repetitive episodes of acute rejection in the early post-transplant period.

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Background: Hepatitis C is a major cause of liver disease worldwide. It has been associated with decreased health-related quality of life (HRQL) and psychiatric symptoms. Our aim was to assess HRQL, depression, and illness understanding in patients with chronic hepatitis C without previous interferon therapy.

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