Abstract:
:Environmental conditions promote weight gain in children and adults, with early nutritional states and the availability of energy condensed/high-fat palatable diets appearing to facilitate the development of obesity. Little is known about the extent to which prenatal and postnatal dietary manipulations alter the response of the adult offspring to high-fat, highly palatable diets. Here we exposed rat dams to highly palatable diet (supplemental diet, SD), rich in fat and sugars, during pregnancy and lactation, and assessed the potential interactions with the effects of a similar diet offered post-weaning on a range of physiological and behavioral parameters in the adult male offspring. Post-weaning exposure to SD increased body weight, body fat, and plasma leptin levels, as well as the plasma glucose response to glucose challenge, compared to chow-fed rats. Combining perinatal SD with post-weaning exposure (SD/SD group) elevated fasting plasma glucose levels, and induced leptin resistance in the adult rats. The same treatment also resulted in sensitized locomotor response to an acute injection of amphetamine. The glucocorticoid response to stress was not affected by the dietary treatments. We conclude that exposure of mother and young to a highly palatable diet with high-fat and high sugar content during the critical perinatal period, increases the risk of developing an obesity-like condition in rats exposed to the same palatable diet post-weaning, and this effect may be accompanied by adaptations in the reward-related mesostriatal dopaminergic system.
journal_name
Physiol Behavjournal_title
Physiology & behaviorauthors
Shalev U,Tylor A,Schuster K,Frate C,Tobin S,Woodside Bdoi
10.1016/j.physbeh.2010.07.018subject
Has Abstractpub_date
2010-11-02 00:00:00pages
494-502issue
4eissn
0031-9384issn
1873-507Xpii
S0031-9384(10)00283-0journal_volume
101pub_type
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