Metabolism of Women During the Reproductive Cycle

Hunscher, Helen A.; Hummell, Frances Cope; Erickson, Betty Nims; Macy, Icie G.

doi:10.1093/jn/10.6.579

Cited by 45 publications

(7 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But three continuous balances from mid-pregnancy or earlier to parturition agree in showing net nitrogen storage, after allowing for losses at parturition, ranging from about 200 g to at least 446 g (Hoffstrom, 1910; Wilson, 1916;Hunscher, Hummell, Erickson & Macy, 1935). If figures such as these are representative, the nitrogen must be stored as protein without much associated water; otherwise they are almost impossible to reconcile with the accepted averages for weight gain during pregnancy.…”

Section: Metabolism During Pregnancymentioning

confidence: 99%

Body stores in human pregnancy and lactation

Thomson

Hytten

1960

Proc. Nutr. Soc.

View full text Add to dashboard Cite

Section: Metabolism During Pregnancymentioning

confidence: 99%

Body stores in human pregnancy and lactation

Thomson

Hytten

1960

Proc. Nutr. Soc.

View full text Add to dashboard Cite

“…Negative nitrogen balances after parturition have been recorded in other species: in rats [Morse and Schmidt, 1944], in dogs [Murlin, 1910], in the cow [Crowther and Woodman, 1922] and in women [Hunscher, Hummel, Nims and Macy, 1935]. In rats, Morse and Schmidt found that approximately half showed negative balances after parturition, and in women, nitrogen losses are not inevitable [Harding and Montgomery, 1927].…”

Section: Dewarmentioning

confidence: 99%

Total Metabolism of the Mouse After Pseudoparturition and Parturition

Dewar

1953

Exp Physiol

View full text Add to dashboard Cite

1. Measurements over consecutive 24 hrs. of water and food‐stuff balances and of metabolic rate have been made on 10 mice for several days before and after parturition or pseudo‐parturition (delivery of the placentæ after earlier destruction of the fœtuses) and the similarity between these processes demonstrated. 2. A loss of water was mainly responsible for the loss of weight during the 2 to 4 days after pseudo‐ or normal parturition. The water losses (a) were accompanied by a reduction in water consumption but were not made good by subsequent restoration of normal fluid intakes, (b) bore no relation to protein losses; the ratio of water to protein lost greatly exceeded the values usual in tissue involution, and (c) correlated with irreducible losses of sodium. These observations are consistent with the view that the elimination of the placentæ terminates a water‐retaining mechanism. 3. A reduction in food intake to below maintenance levels usually accompanied the weight loss, resulting in negative fat and protein balances which, unlike the water losses, were reversible by subsequent increases in food consumption. 4. No changes in carbohydrate or fat metabolism after pseudo‐ or normal parturition were apparent; these food‐stuffs were utilised according to their availability, as determined by the quantity of food consumed in relation to the maintenance requirement. 5. A decline in average energy expenditure of about 12 per cent occurred in the 3 to 4 days after pseudo‐parturition, and the metabolic rate related to body weight was significantly higher just before pseudoparturition than in non‐pregnant mice of the same age. Similar changes were observed after normal parturition but the effects were somewhat masked by the initial presence of the fœtuses: observations on newborn mice suggest that the metabolic rate related to weight of fœtuses just before birth is at least 30 per cent lower than that of the maternal body. The results favour the hypothesis that the maternal metabolic rate is raised in pregnancy.

show abstract

“…A number of nitrogen metabolism studies during pregnancy have been made (Hoffstr6m, 1910;Landsberg, 1912;Wilson, 1916;Coons & Blunt, 1930;Macy et al 1931;Hunscher et al 1933Hunscher et al , 1935Coons & Marshall, 1934;Coons, 1935;Hummell et al 1937). Macy & Hunscher (1934) have calculated from 954 daily balances on pregnant women that the mother stores, on average, about 500 g. of nitrogen, or about 2-3 g. per day from the fourth to the ninth month of pregnancy (see also .…”

Section: Calorie Requirementsmentioning

confidence: 99%

A study of English diets by the individual method: III. Pregnant women at different economic levels

1938

View full text Add to dashboard Cite

1. The diets of 120 pregnant women at different economic levels have been studied by the individual method.2. The intake of calories was found to be little affected by income, and this was true also of fat and carbohydrate. The intakes of protein, animal protein, calcium, phosphorus, iron and vitamin B1 rose convincingly with income.3. These differences were due to the fact that a rise in spending power led to an increased consumption of milk, fruit, vegetables and meat, and to a decreased consumption of bread and total cereals. Details are given in Table V.4. Women taking the better diets were found on average to be taller and less anaemic than those taking the poorer diets. The differences were significant.5. A comparison of the diets of the well-to-do women with the requirements suggested by the League of Nations and other authorities suggests that the requirement for calories has been set too high. The intake of calcium was suboptimal throughout and the diets of the poorer women were deficient in many respects.

show abstract

Metabolism of Women During the Reproductive Cycle

Cited by 45 publications

References 12 publications

Body stores in human pregnancy and lactation

Body stores in human pregnancy and lactation

Total Metabolism of the Mouse After Pseudoparturition and Parturition

A study of English diets by the individual method: III. Pregnant women at different economic levels

Contact Info

Product

Resources

About