The effects of zinc supplementation on zinc, retinol and carotene levels in lactating Amazonian women

Shrimpton, Roger; Marinho, Helyde Albuquerque

doi:10.26596/wn.2018914-21

Cited by 2 publications

(2 citation statements)

References 47 publications

(51 reference statements)

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“…Further studies at that time, found that a third of low-income urban workers in Manaus had low serum zinc levels associated with inadequate dietary intakes (Shrimpton, et al, 1983). Zinc supplementation trials carried out among poor urban Amazonian mothers in the early eighties, showed positive effects on both zinc and vitamin A levels of their breast milk, as was published just recently (Shrimpton and Marinho 2018).…”

Section: Introductionmentioning

confidence: 88%

Zinc status of riverside populations of the rivers Solimoes and Negro in the state of Amazonas, Brazil

Shrimpton

Marinho

2019

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Zinc nutrition has been shown to be critically limiting among urban populations of the central Amazon valley, but no information on the zinc status of rural populations has been published. Nutrition surveys were carried out on the river Solimoes and the river Negro in years 1976/7. Hair samples collected at that time were analysed for their zinc content, by Atomic Absorption Spectrophotometry. The mean hair zinc value of children aged under seven years from the river Negro (140 µg/g) was about one third lower than hair values from the river Solimoes (204 µg/g) with high statistical significance (p< 0.001). Hair zinc levels were influenced by a variety of non-dietary conditions in these riverine children populations, including anthropometric classifications and gastrointestinal parasites, and these are discussed. The significantly lower hair zinc levels in children on the river Negro than in children on the river Solimoes may be part of the reason why young child stunting rates are higher on the river Negro. The importance of zinc status for reproduction is also discussed, especially the evidence for relationships to still teratogenesis and still births, the latter being six times more common among mothers on the river Negro than among those on the Solimoes at that time. Although no indicators of maternal zinc status were measured, the findings of zinc deficiency in their young children support the hypothesis that these mothers were also suffering from zinc deficiency. It also suggests poor zinc status may be associated with the lower population densities found along the banks of the river Negro as compared to that of the river Solimoes. The situation seems unlikely to have improved in the forty years since these observations were made and may even be getting worse. Interventions are suggested that would allow this type of situation to be remedied.

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Section: Introductionmentioning

confidence: 88%

Zinc status of riverside populations of the rivers Solimoes and Negro in the state of Amazonas, Brazil

Shrimpton

Marinho

2019

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“…In view of these considerations, the nutritional problems of pregnancy and lactation assume importance. 22,23 This perspective study was conducted at postnatal ward and outpatient neonatal centre. It included 50 wellnourished and equal number of malnourished women.…”

Section: Well-nourished Malnourishedmentioning

confidence: 99%

Study of effect of maternal nutrition on breast milk trace elements in malnourished versus well-nourished mothers

2018

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Background: Minerals and trace element content of human milk have been a matter of concern among nutritionist in relation to the availability of the essential elements to the new born. Mineral and trace elements occur in the body in a number of chemical forms, such as inorganic ions and salts, or as constituents of organic molecules, for example proteins, fats, carbohydrates and nucleic acids. There is a paucity of data on the effect of nutrition on the composition of trace elements in milk and its effect on the infant. Hence a comparison made between the trace element and mineral such as sodium, potassium, magnesium, iron, zinc, copper, calcium in milk of malnourished and well-nourished mothers in order to determine the effect of maternal nutrition on the quality of milk and its effect on the growth and physical development of the new-born.Methods: Around 100 mothers were enrolled in the study after obtaining prior informed consent. They were divided into 2 groups-group I had 50 malnourished mothers and group II had 50 well-nourished mothers. The pre-fed milk sample which was collected was stored at - 20℃ until it was processed. It was thawed and analysed for copper, zinc, iron, magnesium, sodium, potassium and calcium.Results: The mean levels of trace elements (iron and zinc) and minerals (sodium, potassium, calcium, magnesium) were slightly more among well-nourished than malnourished women. Values of only copper were significantly higher in the colostrum of well-nourished as compared to that of the malnourished mothers.Conclusions: The parameters of weight, height weight/height ratio and hemoglobin varied significantly between the well-nourished and malnourished mothers. The difference in milk content of malnourished and well-nourished mothers is not significant for sodium, potassium, calcium, iron, magnesium, zinc. However, copper levels were significantly higher in well-nourished mothers.

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The effects of zinc supplementation on zinc, retinol and carotene levels in lactating Amazonian women

Cited by 2 publications

References 47 publications

Zinc status of riverside populations of the rivers Solimoes and Negro in the state of Amazonas, Brazil

Zinc status of riverside populations of the rivers Solimoes and Negro in the state of Amazonas, Brazil

Study of effect of maternal nutrition on breast milk trace elements in malnourished versus well-nourished mothers

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