Changes in Skeletal System during Pregnancy

Analysis of changes in the renin-angiotensin system during pregnancy.

1. Determinations of plasmarenin activity (PRA), plasma renin concentration (PRC) and renin substrate (RS) were made on single plasma samples from thirty-four women at various stages of pregnancy. Comparisons were made with non-pregnant control subjects. 2. All three variables were elevated above controls throughout pregnancy, but whereas the mean value of PRA was equally high between the first...

Changes in skinfolds during pregnancy.

I. Skinfold thicknesses at seven sites were measured during and after pregnancy in eightyfour women ; in forty-eight of these, total body water was measured concurrently. 2. Early in pregnancy (10 weeks) the skinfold measurements were highly correlated with each other and with maternal weight, ratio of observed weight to standard weight-for-height, ‘dry’ (water-free) weight, and with calculated...

[Ocular changes during pregnancy].

Pregnancy can cause several alterations in human eye function in healthy condition as well in ocular disease; these effects on the eyes are divided into three categories: physiologic alterations, ocular diseases changes already existing before the pregnancy, and pathological alterations. The present text proposes a bibliographical revision on the theme. The authors researched PubMed (MEDLINE) a...

Skeletal changes during pregnancy and lactation in the rat: effect of different levels of dietary calcium.

It is now well known that the skeleton serves as a store of calcium and phosphorus, and that a part of the mineral requirements of lactation is met by bone resorption. In an earlier communication (Warnock & Duckworth, 1944) the literature was surveyed and the role of the spongiosa as a source of minerals for lactation in the rat was studied under conditions of adequate calcium intake. Certain i...

Chemical changes in skeletal muscle during development.