Abstracts de trabajos presentados en congresos internacionales 2012

DEPARTAMENTO DE MEDICINA3 RD INTERNATIONAL CONGRESS ON ABDOMINAL OBESITY - QUEBEC, CANADÁEVALUATION OF BDNF EXPRESSION IN LIVER, VISCERAL AND SUBCUTANEOUS FAT FROM OBESE SUBJECTS, BYIMMUNOHISTOCHEMESTRY.AV. Araya, V. Tapia, E. Lanzarini, X. Orellana, M. Maripangui, C. Paulsen, C. Romero, ME. VillanuevaBDNF neurotrophin can act on nonneuronal cells. There are evidences of its role in metabolic actions. Objective: To evaluate byimmunohistochemistry technique, the expression of BDNF in liver, subcutaneous (SF) and visceral fat (VF) of non-diabetic obeseand control subjects. Patients and methods: 15 subjects with BMI≥30 kg/m 2 and < 26 kg/m 2 who underwent abdominal surgerywere selected. A fasting blood sample was taken for measurement of glucose, insulin and lipid profile. A liver, subcutaneous andomental fat biopsy was obtained for immunohistochemistry evaluation of BDNF protein expression levels. To quantify its expressionin histological sections, we used the software Image-Pro Plus 6.2. A p value < 0.05 was considered statistically significant. Results:Ten obese subjects (8F/2M), age: 37.7±13.6 years, BMI: 33±2.7 kg/m 2 and 5 female control subjects, age 44.4±3.8 years, BMI:22.9±2.2 kg/m 2 , were evaluated. BMI, waist circumference, fasting insulin, HOMA and LDL cholesterol were significantly higher inthe obese group (p=0,005). The expression of BDNF in VF was higher than in SF in both groups (p< 0.005). In obese subjects, BDNFexpression in liver tissue was higher than in controls (p=0.0094). There were no differences between groups in the expression ofBDNF in SF or VF. Liver steatosis was found in obese subjects. Conclusions: The increased expression of BDNF protein in visceralfat could be associated with local metabolic process. In obese subjects, the increased BDNF liver expression probably is relatedwith insulin resistance and fatty liver disease.18° INTERNATIONAL LIVER TRANSPLANTATION SOCIETY - SAN FRANCISCO, USASURVIVAL IN PATIENTS UNDERGOING ORTHOTOPIC LIVER TRANSPLANTATION AT THE HOSPITAL CLINIC, UNIVERSITYOF CHILE.Juan Pablo Miranda, Danny Oksenberg, Jaime Poniachik, Jorge Cordero, José Ibarra, Esteban Villagra, Angélica Bórquez, JaimeCastillo, Gonzalo Cardemil, Juan Carlos Díaz.Introduction: Orthotopic liver transplantation (OLT) has become an effective procedure for patients with advanced liver disease,reporting a survival rate between 70% - 80% at 36 months. In our country there are few publications in relation to graft survivalin OLT. Aim: To evaluate the survival post OLT at the Hospital Clinic, University of Chile. Material and Methods: A retrospectivestudy of demographic and clinical variables of patients undergoing OLT at the Hospital Clinico Universidad de Chile, by creating astandardized database and subsequent application of survival analysis and a model Cox proportional hazards Results: We evaluated134 OLT performed during the period 2002-2011, there was a 55.8% male patients, mean age was 53.8±10.6 (21-68) years,median graft survival time of 38.9 months. The use of cyclosporine compared to tacrolimus as primary immunosuppressant wasassociated with an increased prevalence of infections (23.0% v/s 8%) and moderate and severe graft rejections (17% v/s 9%), p