Maternal arachidonic acid supplementation improves neurodevelopment in young adult offspring from rat dams with and without diabetes.
Maternal diabetes may compromise infant arachidonic acid (AA) status and development. This study tested if maternal AA supplementation improves neurodevelopment in adult offspring. Rat dams were randomized into 6 groups: Saline-Placebo, streptozotocin-induced diabetes with glucose controlled at <13mmol/L, or poorly controlled at 13-20mmol/L using insulin; and fed either a Control or AA (0.5% fat) diet throughout reproduction. Weaned-offspring were fed regular chow to 12 weeks of age. Testing included exploratory behavior, rota rod and water maze (WM). Poorly controlled offspring showed longer (p≤0.018) escape-latency on testing-day 1 WM but not thereafter (p>0.05). Maternal glucose concentration positively correlated with (p=0.006) male offspring testing-day 1 WM latency. The AA-diet offspring performed better in WM and rota rod (p≤0.032) and showed higher exploratory behavior (p=0.008) than Control-diet offspring. These data suggest maternal hyperglycemia has longstanding consequences to initial stages of learning in the offspring. Maternal AA supplementation and training positively influence learning outcomes.
Zhao
Jinping
J
School of Dietetics and Human Nutrition, McGill University, Ste-Anne-de-Bellevue, QC, Canada H9X 3V9.
Del Bigio
Marc R
MR
Weiler
Hope A
HA
D000818:Animals; D016718:Arachidonic Acid / Q000008:administration & dosage*; D001921:Brain / Q000254:growth & development*; D003921:Diabetes Mellitus, Experimental / Q000378:metabolism*; D004032:Diet; D005106:Exploratory Behavior; D005260:Female; D008297:Male; D008431:Maternal-Fetal Exchange; D018782:Maze Learning; D011247:Pregnancy; D011254:Pregnancy in Diabetics / Q000378:metabolism*; D039401:Prenatal Nutritional Physiological Phenomena; D011597:Psychomotor Performance; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
D016718:Arachidonic Acid