Human nutrition. Clinical nutrition最新文献_第8页

Folate status during pregnancy and lactation in a West African rural community. 西非农村社区怀孕和哺乳期叶酸状况。

Human nutrition. Clinical nutrition Pub Date : 1986-01-01

C J Bates, N J Fuller, A M Prentice

{"title":"Folate status during pregnancy and lactation in a West African rural community.","authors":"C J Bates, N J Fuller, A M Prentice","doi":"","DOIUrl":"","url":null,"abstract":"Red cell folate concentration was used to measure folate status in 89 rural Gambian women, 81 of whom were pregnant or lactating for the duration of the study. During pregnancy, the women received a haematinic supplement of 500 micrograms pteroyl glutamic acid and 47 mg iron a day, and a food supplement was also given to some of the women during either pregnancy, or lactation, or both. During pregnancy, the red cell folate levels reached a peak around the fifth month, attributable to the haematinic supplement. By the third month of lactation they had fallen back to a low plateau, which was below the accepted lower limit of normality in 56 per cent of those who did not receive a food supplement during lactation. In addition to these changes, there was a significant cyclical variation with season, peak values occurring in the rainy season. Plasma iron values followed the red cell folate patterns quite closely. Changes in blood haemoglobin levels during pregnancy were similar to those reported from other communities; there was also an increase in mean red cell volume during the first half of pregnancy, reaching a peak at the same stage as the peaks of red cell folate and plasma iron. There was no indication of the presence of raised cell volumes in association with low folate indices which might suggest megaloblastosis. It is concluded that the 500 micrograms daily folate supplement is both necessary and adequate to maintain red cell folate levels during pregnancy in this community, but that in the absence of further supplements during lactation, red cell folate levels will fall to undesirably low levels in many subjects by the third-to-sixth month of lactation.","PeriodicalId":13078,"journal":{"name":"Human nutrition. Clinical nutrition","volume":"40 1","pages":"3-13"},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15071113","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

15N-tracer-kinetic studies on the nitrogen metabolism of very small preterm infants on a diet of mother's milk. 极小早产儿母乳喂养氮代谢的15n示踪动力学研究。

Human nutrition. Clinical nutrition Pub Date : 1985-11-01

C Plath, W Heine, L Krienke, I Richter, K D Wutzke, J Töwe, K Krawielitzki

{"title":"15N-tracer-kinetic studies on the nitrogen metabolism of very small preterm infants on a diet of mother's milk.","authors":"C Plath, W Heine, L Krienke, I Richter, K D Wutzke, J Töwe, K Krawielitzki","doi":"","DOIUrl":"","url":null,"abstract":"Protein synthesis and breakdown, nitrogen flux and other parameters of nitrogen metabolism were measured in five male preterm infants with a mean gestational age of 30.4 +/- 1.95 complete weeks of gestation and a mean body weight of 1592 +/- 517 g. The infants were fed on mothers' milk; the measurements were made at a post-conceptional age of 31.6 +/- 1.9 weeks of gestation (Ia) and were repeated at 34.4 +/- 1.9 weeks of gestation (Ib). [15N]-glycine (95 atom per cent) was used as a tracer, administered as a single enteral dose of 20 mg/kg. Whole-body protein parameters were calculated from an assumed three-pool model. The results were compared with data from moderately small preterm (II) and full-term (III) infants measured at post-conceptional ages of 36.1 +/- 1.4 and 48.0 +/- 2.8 weeks respectively. Protein synthesis rates tended to decrease with increasing post-conceptional age: 14.3 +/- 4.5 g/kg/d (Ia); 11.8 +/- 2.9 g/kg/d (Ib); 7.9 +/- 2.7 g/kg/d (II); and 7.7 +/- 1.4 g/kg/d (III). Protein breakdown and nitrogen flux showed the same trends. Possible consequences for the appropriate nutrition of very small preterm infants are discussed.","PeriodicalId":13078,"journal":{"name":"Human nutrition. Clinical nutrition","volume":"39 6","pages":"399-409"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"15188718","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prolonged depression of serum zinc concentrations in children following post-measles diarrhoea. 儿童麻疹后腹泻后血清锌浓度的长期下降。

Human nutrition. Clinical nutrition Pub Date : 1985-11-01

S A Sarker, M M Rahaman, A Ali, S Hossain, A N Alam

引用次数: 0

Post-gastrectomy nutrition: methods of outpatient screening for early osteomalacia. 胃切除术后营养:早期骨软化症门诊筛查方法。

Human nutrition. Clinical nutrition Pub Date : 1985-11-01

F I Tovey, D G Karamanolis, J Godfrey, C G Clark

引用次数: 0

Effects of a multivitamin and iron supplement on running performance in Gambian children. 复合维生素和铁补充剂对冈比亚儿童跑步成绩的影响。

Human nutrition. Clinical nutrition Pub Date : 1985-11-01

H J Powers, C J Bates, W H Lamb, J Singh, W Gelman, E Webb