期刊
BRITISH JOURNAL OF NUTRITION
卷 101, 期 7, 页码 1020-1030出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0007114508057607
关键词
Intergenerational programming; Blood pressure; Epigenetic regulation; Kidney; Pregnancy; Rats
资金
- British Heart Foundation
Associations between birth weight and CVD in adult life are supported by experiments showing that undernutrition in fetal life programmes blood pressure. In rats, the feeding of a maternal low-protein (MLP) diet during gestation programmes hypertension. The present study aimed to assess the potential for a nutritional insult to impact across several generations. Pregnant female Wistar (F-0) rats were fed a control (CON; n 10) or MLP (n 10) diet throughout gestation. At delivery all animals were fed a standard laboratory chow diet. At 10 weeks of age, F-1 generation offspring were mated to produce a second generation (F-2) without any further dietary change. The same procedure produced an F-3 generation. Blood pressure in all generations was determined at 4, 6 and 8 weeks of age and nephron number was determined at 10 weeks of age. F-1 generation MLP-exposed offspring exhibited raised (P<0.001) systolic blood pressure (male 143 (SEM 4) mmHg; female 141 (SEM 4) mmHg) compared with CON animals (male 132 (SEM 3) mmHg; female 134 (SEM 4) mmHg). Raised blood pressure and reduced nephron number was also noted in the F-2 generation (P<0.001) and this intergenerational transmission occurred via both the maternal and paternal lines, as all three possible offspring crosses (NILP X CON, CON X MLP and MLP X MLP) were hypertensive (132 (SEM 3) mmHg) compared with CON animals (CON X CON; 123 (SEM 2) mmHg). No effect was noted in the F-3 generation. It is concluded that fetal protein restriction may play a critical role in determining blood pressure and overall disease risk in a subsequent generation.
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