Objectives: To assess the accuracy of clinical laboratories in Lima in the determination of glucose, cholesterol and triglycerides. Design: Descriptive. Location: Center for Research in Biochemistry and Nutrition, Faculty of Medicine, San Marcos University, and clinical laboratories participating in Lima. Materials: Serum samples from donors. Interventions: Prior informed consent, serum samples were sent in 4-6°C cold chain to 88 blind duplicate clinical laboratories sampled. Results were received via email and arithmetic mean, standard deviation (SD), coefficient of variation (CV) and standard deviation index (SDI) were obtained; accuracy was assessed using the validation of biological variability (BV). Main outcome measures: Glucose, cholesterol and triglycerides levels. Results: The majority (>75%) of laboratory results were within acceptable range; laboratories out of control ran...

El tocosh es un producto alimenticio obtenido por una técnica de conservación andina y que tiene propiedades nutritivas y terapéuticas. Objetivo: Demostrar la capacidad antioxidante y el efecto citoprotector del tocosh de Solanum tuberosum ‘papa’ en la mucosa gástrica de animales de experimentación. Diseño: Experimental. Institución: Centro de Investigación de Bioquímica y Nutrición, Facultad de Medicina, Universidad Nacional Mayor de San Marcos, Lima, Perú. Material biológico: Tocosh seco y molido administrado a ratas albinas. Intervenciones: A 6 grupos de ratas albinas machos (200 ± 50 g) se les dividió en: (GI) solución NaCl 0,9%, 10 mL/kg; (GII) etanol al 70% a 10 mL/kg; (GIII, IV y V) Tocosh equivalente a 900 mg/kg, 1 800 mg/kg y 2 700 mg/kg, respectivamente, y (GVI) sucralfato 30 mg/kg. En todos los casos, una hora después se indujo injuria con etanol 70° a 10 ...