Antioxidant enzyme activities are decreased in preterm infants and in neonates born via caesarean section.

Objectives: To investigate the antioxidant defense potential of human neonates according to gestational age and mode of delivery.

Study Design: Four study groups were established, full-term normal spontaneous vaginal delivery (FT-NSVD, n=24), full-term caesarean section (FT-CS, n=19), preterm normal spontaneous vaginal delivery (PT-NSVD, n=15) preterm caesarean section (PT-CS, n=21). The activity of catalase (CAT), glutathion peroxidase (GPX), Cu/Zn superoxide dismutase (Cu/Zn-SOD) were determined from cord blood.

Do characteristics of adenomas on flexible sigmoidoscopy predict advanced lesions on baseline colonoscopy?

Background/aims: Colonoscopy is presently recommended for patients with any benign neoplasm found on sigmoidoscopy. The purpose of this study was to determine whether characteristics of adenomas on flexible sigmoidoscopy predict advanced lesions on baseline colonoscopy.

Methods: A total of 226 asymptomatic and symptomatic patients with adenomas noted on flexible sigmoidoscopy at a large, multispecialty medical group were prospectively studied.