SI and Hyperglycemia: The authors determined the activity ofintestinal disaccharidases (maltase and sucrase) and of6-phosphofructo-1-kinase (PFK-1) in enterocytes isolatedfrom the small intestine of male Wistar rats (2.5 to 3 monthsold) with experimental nonobese type 2 diabetes, induced bystreptozotocin (STZ) injection on the day of birth (n0-STZ)or on the 5th day of life (n5-STZ), with different degreesof hyperglycemia and insulinemia (n0-STZ and n5-STZmodels).