Occurrence and Source Appraisal of Polycyclic Aromatic Hydrocarbons (PAHs) in Surface Waters of the Almendares River, Cuba.

In this work, 14 polycyclic aromatic hydrocarbons (PAHs) included in the United States Environmental Protection Agency pollutant priority list were analyzed in the surface water of the upper urbanized part of Almendares River, the most important water course in Havana, Cuba. Surface water from five sampling sites was collected at the end of dry season and analyzed by high-performance liquid chromatography-fluorescence detection method after solid phase extraction procedure. Total PAHs concentrations varied from 836 to 15 811 ng L(-1) with a geometric mean value of 2512 ng L(-1).

Gluconeogenesis inhibition and phytochemical composition of two Cecropia species.

Aim Of The Study: Cecropia obtusifolia and Cecropia peltata are plants highly used by the Mexican diabetic population to treat type 2 diabetes. Previous studies have assessed their hypoglycemic effect in animal models and in type 2 diabetic patients. Both plants contain cholorogenic acid, an inhibitor of glucose-6-phosphate translocase.