Changes in ascorbic acid metabolism of the offspring following high maternal intake of this vitamin in the pregnant guinea pig.
Guinea pigs were fed a control (0.05%) or a high (0.5%) ascorbic acid diet during the last half of pregnancy. When the pups were tested at 5 and 10 days of life the ones from the high-ascorbic-acid group demonstrated a marked increase in 14CO2 excretion, compared with the control pups, following an intraperitoneal injection of 14C-labeled ascorbic acid. When the animals were weaned to an ascorbic-acid-deficient diet signs of scurvy appeared earlier in the pups from the high vitamin C group and their survival was shorter. When excretion of labeled CO2 in both groups was correlated with the day of onset of scurvy signs, a linear correlation was found between these two parameters, suggesting that the earlier appearance of signs of scurvy in the experimental pups is secondary to an increased rate of ascorbic acid catabolism.
D000818:Animals; D000831:Animals, Newborn; D001205:Ascorbic Acid / Q000008:administration & dosage / Q000378:metabolism* / Q000494:pharmacology; D001206:Ascorbic Acid Deficiency / Q000378:metabolism / Q000401:mortality; D001724:Birth Weight; D001835:Body Weight; D002245:Carbon Dioxide / Q000096:biosynthesis; D004032:Diet; D005247:Feeding Behavior / Q000187:drug effects; D005260:Female; D005298:Fertility / Q000187:drug effects; D006168:Guinea Pigs; D008431:Maternal-Fetal Exchange; D009751:Nutritional Requirements; D011247:Pregnancy; D011270:Pregnancy, Animal
D002245:Carbon Dioxide; D001205:Ascorbic Acid