Journal
ACTA PAEDIATRICA
Volume 100, Issue 5, Pages 653-660Publisher
WILEY
DOI: 10.1111/j.1651-2227.2010.02102.x
Keywords
Birth size; Blood pressure; Indian children; Maternal height; Placental surface
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Funding
- Medical Research Council, UK
- Parthenon Trust, Switzerland
- Wellcome Trust, UK
- MRC [MC_UP_A620_1016, G0400519] Funding Source: UKRI
- Medical Research Council [G0400519, MC_UP_A620_1016] Funding Source: researchfish
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Aim: To determine whether the size and shape of the placental surface predict blood pressure in childhood. Methods: We studied blood pressure in 471 nine-year-old Indian children whose placental length, breadth and weight were measured in a prospective birth cohort study. Results: In the daughters of short mothers (< median height), systolic blood pressure (SBP) rose as placental breadth increased (beta = 0.69 mmHg/cm, p = 0.05) and as the ratio of placental surface area to birthweight increased (p = 0.0003). In the daughters of tall mothers, SBP rose as the difference between placental length and breadth increased (beta = 1.40 mmHg/cm, p = 0.007), that is as the surface became more oval. Among boys, associations with placental size were only statistically significant after adjusting for current BMI and height. After adjustment, SBP rose as placental breadth, area and weight decreased (for breadth beta = -0.68 mmHg/cm, p < 0.05 for all three measurements). Conclusions: The size and shape of the placental surface predict childhood blood pressure. Blood pressure may be programmed by variation in the normal processes of placentation: these include implantation, expansion of the chorionic surface in mid-gestation and compensatory expansion of the chorionic surface in late gestation.
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