ESTUDO SOBRE O ESTADO NUTRICIONAL EM RELAÇÃO AO ZINCO NA AMAZÔNIA. I. Níveis de Zinco no Sôro e Ingestão de Zinco em Operários de Manaus, 1978 ()

Shrimpton, Roger; França, Thelma Suely; Rocha, Yolanda; Golden, Michael

doi:10.1590/1809-43921983131073

Cited by 5 publications

(6 citation statements)

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“…Analysis of the data from a household expenditure survey conducted in Manaus in the mid-seventies, found that zinc was one of the most deficient nutrients among the household diets (Shrimpton, 1984). 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: 87%

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: 87%

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

Shrimpton

Marinho

2019

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“…Dados limitados sobre absorção de zinco da dieta total em humanos sugerem uma influência do fitato mais moderada, resultando em 26% a 33% de absorção desse mineral em dietas com razões molares de 14 e 5, respectivamente 26 , e 29% de absorção em dietas com razão molar de 7 27 . Estudo realizado com mulheres caucasianas australianas revelou que, embora o consumo médio de zinco no grupo de vegetarianas fosse significantemente menor que nas onívoras, as médias de concentrações de zinco sérico eram similares nos dois grupos 1 .…”

Section: I S C U S S ã Ounclassified

“…A deficiência de zinco em dietas de regiões menos desenvolvidas no Brasil tem sido descrita na literatura 27 . Tal deficiência está associada, principalmente, a déficit de crescimento, hipogonadismo, infertilidade, depressão do sistema imune, redução do paladar e do apetite 29 , e afeta cerca de 2 bilhões de pessoas, predominantemente, crianças e gestantes nos países em desenvolvimento 30 .…”

Section: I S C U S S ã Ounclassified

Biodisponibilidade de minerais em refeições vegetarianas e onívoras servidas em restaurante universitário

2007

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ObjetivoAvaliar a biodisponibilidade de cálcio, ferro e zinco nas dietas vegetarianas e onívoras, servidas no Restaurante Universitário da Universidade de Brasília. MétodosForam coletadas três amostras de cada refeição, durante 5 dias, para determinação do conteúdo de fitato. O conteúdo em cálcio ferro e zinco foi estimado a partir de tabelas de composição de alimentos. A razão molar entre o ácido fítico e o mineral dietéticos foi utilizada como critério para avaliar a biodisponibilidade. ResultadosAs concentrações médias de ácido fítico, cálcio e ferro foram significantemente maiores na dieta vegetariana (p=0,0002; p=0,0015 e p=0,0227, respectivamente), enquanto a concentração de Zinco foi maior na dieta onívora (p=0,0205). Ambas as dietas apresentaram razões molares ácido fítico: cálcio e ácido fítico: ferro inferiores aos valores críticos (1,56 e 14, respectivamente), sugerindo que o fitato não deve comprometer a biodisponibilidade do cálcio ou do ferro nessas refeições. A razão molar ácido fítico: zinco, na dieta vegetariana, foi de 9,3 e na onívora de 4,9, caracterizando-as como refeições de média e alta biodisponibilidade para o zinco, respectivamente. O feijão e a soja eram os componentes dietéticos mais ricos em fitato nas duas refeições. ConclusãoDevido aos teores de cálcio e ferro nas duas refeições, a presença de fitato não deve representar risco de deficiência desses minerais para indivíduos que se alimentam diariamente no Restaurante Universitário da

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“…In the 1980s, zinc was found to be one of the principal dietary inadequacies in the central Amazon valley (Shrimpton 1980;Shrimpton 1984;Amoroso & Shrimpton 1984), and a third of low-income urban workers had low serum zinc levels (<70 mg/l), associated with similarly inadequate dietary intakes (Shrimpton et al 1983a). The population was typically stunted, but there was not the dwarfism and sexual retardation, nor the other overt clinical signs of zinc deficiency found in the middle east (Prasad et al 1961).…”

Section: Introductionmentioning

confidence: 99%

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

Shrimpton

Marinho

2018

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The effects of zinc supplementation on levels of zinc, retinol and carotene in serum and breast milk were investigated in a double blind controlled prospective study amongst 66 poor urban Amazonian mothers in 1981. The mothers predominantly breast-fed their infants for the first five months of life and took supplements from soon after birth. Milk retinol levels were already significantly higher in zinc supplemented (ZS) than non-zinc supplemented (NZS) mothers by one month post-partum, and by four months had risen significantly in the ZS mothers but fallen in NZS mothers. At four months post-partum, milk retinol levels of ZS mothers were near normal and double those of NZS mothers. The effect of zinc supplementation on these retinol levels was possibly associated with an increased absorption and utilization of dietary carotene, since milk carotene levels also increased in ZS mothers to levels three times those of NZS mothers at four months post-partum. This impact of zinc supplementation on maternal and breast milk vitamin A levels has not been shown previously and is of potential relevance where zinc and vitamin A deficiency are common.

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ESTUDO SOBRE O ESTADO NUTRICIONAL EM RELAÇÃO AO ZINCO NA AMAZÔNIA. I. Níveis de Zinco no Sôro e Ingestão de Zinco em Operários de Manaus, 1978 ()

Cited by 5 publications

References 9 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

Biodisponibilidade de minerais em refeições vegetarianas e onívoras servidas em restaurante universitário

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

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