Intestinal absorption at high altitude.

Vitamin E Improves Morphology and Absorptive Surface of Small Intestine in Broiler Chickens Reared at High Altitude

Under high altitude conditions, the effects of vitamin E (α-tocopherol) on growth performance, intestinal morphology (villus size and type), and absorptive surface area of broiler chickens were evaluated. Chickens were fed diets supplemented with 0, 100, 200 or 400 IU/kg vitamin E for 42 days. On days 14, 28 and 42, birds were sacrificed and three segments of small intestine were dissected. The...

Supplemental L-arginine Modulates Developmental Pulmonary Hypertension in Broiler Chickens Fed Reduced-Protein Diets and Reared at High Altitude

This experiment was conducted to evaluate the effects of supplemental L-arginine (ARG) in reduced-protein diets on cardiopulmonary performance and intestinal morphology in the broilers reared at high altitude. A total of 156 day-old male broilers were randomly assigned to 3 treatments and 4 replicates of 13 chicks and reared up to 42 days of age. Treatment groups were designed as a normal-prote...

Influence of altitude changes on intestinal iron absorption.

The BMRES 1984 Medical Research Expedition to the Himalayas.

Twenty-one subjects formed a trekking expedition to study the effects of acetazolamide on exercise performance and acclimatization at high altitude. Subjects were randomized to acetazolamide or placebo on a double blind basis. During ascent to and stay for 6 nights at 4846 m studies were carried out on blood gases, 2,3 diphosphoglycerate (2,3 DPG), proteinuria, exercise testing, intestinal abso...

INTESTINAL ZINC ABSORPTION IN DESFERROXAMINE-TREATED RATS

Desferroxamine (Desferal) is used tochelate iron in thalassemia, a disease of very high prevalence in various parts of lran. We have investigated intestinal zinc absorption in Desferal-treated rats which, in pilot experiments, showed low serum levels of both iron and zinc. Intraperitoneal administration of ten 0.5 g doses of Desferal (one injection every other day) to male rats produced sev...