An overview of nonalcoholic steatohepatitis: past, present and future directions.

Nonalcoholic steatohepatitis (NASH) emerged from an anecdotal disease first described in 1981 to the most common cause of incident chronic liver disease at the end of the current decade. This article describes, from a historical perspective, some of the landmark changes in our perception and understanding of this disease. Natural history studies have shown the potential for serious liver damage and ultimately increased overall and liver-related mortality. The recognition of insulin resitance as an almost universal underlying condition in patients with NASH, its role as a major determinant of steatogenesis and possibly liver disease progression contributed to the identification of a probable cause for this disease, one that is amenable to therapeutic intervention. Consequently, screening for liver injury in patients with metabolic risk factors entered clinical practice in hepatology and endocrine diseases. NASH can coexist with other frequent liver diseases and often aggravate the course of liver injury; therefore it should be seen as an independent disease and not as an entity diagnosed only by exclusion of other hepatopathies. Finally, steatosis can have systemic consequences as it worsens insulin resistance, predicts the emergence of metabolic complications and increases the risk for cardiovascular events. Priorities for future research are the optimisation of non-invasive screening strategies, the identification of patients at risk of liver disease progression, the understanding of the hepatic carcinogenic potential and testing innovative pharmacological targets for therapy.

The liver and the waistline: Fifty years of growth.

Fifty years of the Gastroenterological Society of Australia have witnessed the changing appearance of Australians. Asian immigration has transformed the dominant urban culture from European to Eurasian, with some unique Australian attributes. Meanwhile, global conditions have altered body shape, and our sports-proud country is now fat! Thus, as in North America, Europe, China, and affluent Asia-Pacific countries, prosperity and lifestyle, cheap processed foods coupled with reduced physical activity have created an epidemic of over-nutrition resulting in overweight/obesity. Additional genetic factors are at the core of the apple shape (central obesity) that typifies over-nourished persons with metabolic syndrome. Indigenous Australians, once the leanest and fittest humans, now have exceedingly high rates of obesity and type 2 diabetes, contributing to shorter life expectancy; Asian Australians are also at higher risk. Like non-steroidal anti-inflammatory drugs (NSAIDs) and cigarette smoking, obesity now contributes much to gastrointestinal morbidity and mortality (gastroesophageal reflux disease, cancers, gallstones, endoscopy complications). This review focuses on Australian research about fatty liver, particularly roles of central obesity/insulin resistance in non-alcoholic fatty liver disease/steatohepatitis (NAFLD/NASH). The outputs include many highly cited original articles and reviews and the first book on NAFLD. Studies have identified community prevalence, clinical outcomes, association with insulin resistance, metabolic syndrome and hypoadiponectinemia, developed and explored animal models for mechanisms of inflammation and fibrosis, conceptualized etiopathogenesis, and demonstrated that NASH can be reversed by lowering body weight and increasing physical activity. The findings have led to development of regional guidelines on NAFLD, the first internationally, and should now inform daily practice of gastroenterologists.

Overview: Liver disease and transplantation.

Australia has had a proud and enviable record of seminal contributions to hepatology, with many contributors. Thus, any attempt to summarize these contributions ab initio in a brief review article is a significant challenge, primarily because it is so easy to overlook or underestimate particular aspects. In this article, I have confined my comments primarily to the areas where the contributions have had a significant global impact and have clearly been recognized internationally. This means that many worthwhile Australian additions will be omitted if there was less apparent international impact. The first significant interest in liver disease in Australia was from the Melbourne group at the Walter and Eliza Hall Institute (WEHI) and Royal Melbourne Hospital, leading to seminal contributions to the description, diagnosis, aetiopathogenesis and therapy of autoimmune hepatitis and primary biliary cirrhosis. Others from Royal Prince Alfred Hospital in Sydney contributed substantially to the effects of immunosuppression of autoimmune hepatitis and to early descriptions of primary sclerosing cholangitis. Other areas where Australians have contributed significantly include steatohepatitis, iron metabolism (and in particular hemochromatosis), viral hepatitis (both at the molecular and clinical level), portal hypertension, and transplant immunology. The remarkable contribution of Professor Dame Sheila Sherlock to Australian hepatology is also summarized.

Hepatopatía aguda de presentación obstétrica: revisión bibliográfica / acute Hepatopatía of obstetricla presentation: bibliographical overhaul

Realiza una revisión bibliográfica del Hígado Graso Agudo del Embarazo (HGAE), en la que se describe su historia, fisiopatología, histopatología, características clínicas, diagnóstico diferencial, hallazgos de laboratorio y tratamiento. Ha sido elaborado con el objetivo de brindar una información concissa y rápida de esta patología que no debe pasar desapercibida por el médico clínico y gineco-obstetra por las consecuencias que genera...