Body iron stores in relation to growth and pubertal maturation in healthy boys

Anttila, Raija; Cook, James D.; Siimes, Martti A.

doi:10.1046/j.1365-2141.1997.d01-1978.x

Cited by 19 publications

(8 citation statements)

References 11 publications

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“…It is known that rapid growth increases iron absorption. Anttila et al (10) showed a negative correlation between growth velocity and body iron stores in their study of pre-and pubertal healthy boys. They conclude that "iron stores probably play a more important regulatory role by stimulating iron absorption".…”

Section: Discussionmentioning

confidence: 92%

“…This strongly suggests that serum has an inhibitory effect on the R&D assay, which would explain the considerably lower values for s-TfR reported from use of this assay. Only a few studies of s-TfR and the s-TfR/ferritin ratio have been published in pre-pubertal and pubertal boys (10,15); as far as we know there have been no such studies in adolescents after puberty.…”

Section: Discussionmentioning

confidence: 99%

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A follow‐up study of serum ferritin and transferrin receptor concentrations in Swedish adolescents at age 17 years compared to age 15

et al. 2000

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Serum ferritin and serum transferrin receptor concentrations, growth and food habits were studied in healthy Swedish boys (n= 103) and girls (n= 124) at the age of 17 y and compared with those in the same adolescents at age 15. Between these ages, serum transferrin receptor increased significantly in both boys and girls. Serum ferritin increased significantly in boys but not in girls. The transferrin receptor/ferritin ratio increased significantly in girls but not in boys, indicating insufficient iron stores in the 17‐y‐old girls in relation to erythropoiesis and iron needs. Between 15 and 17 y the boys' frequency of consumption of milk and bread decreased, while they more often consumed pasta, cheese and coffee. The girls decreased their frequency intake of fat products, milk and meat. The frequency of meat consumption emerged as the single significant predictor for serum ferritin < 12μg/L in girls, but not in boys. The median daily iron intake, determined in a subsample, decreased in boys from 18.7 to 13.6mg and in girls from 14.1 to 8.8 mg, and the decrease was to a large extent due to cessation of iron fortification of flour. Conclusions: The results indicate insufficient iron stores in the 17‐y‐old girls in relation to erythropoiesis and iron needs, but more favourable iron stores in the boys. The absence of a significant decrease in mean serum ferritin despite rapid growth suggests that the earlier iron fortification of flour only marginally contributed to the iron status of Swedish adolescents of this age group.

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Section: Discussionmentioning

confidence: 92%

Section: Discussionmentioning

confidence: 99%

A follow‐up study of serum ferritin and transferrin receptor concentrations in Swedish adolescents at age 17 years compared to age 15

et al. 2000

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“…Greger et al 20 A análise bioquímica mostrou que todos os adolescentes apresentaram valores de ferro e zinco dentro do padrão de referência. Em relação ao ferro, há relato com resultado similar a este estudo, porém não considera o estirão pubertário 22 . Os meninos têm maior risco de deficiência de ferro durante o período inicial da adolescência, que corresponde ao período de crescimento rápido.…”

Section: Discussionunclassified

“…Laitinen et al 27 , em estudo com adolescentes, mostraram correlação positiva para o cobre, porém abrangendo as fases pré e pós-estirão pubertário, o que impossibilita a comparação com nossos resultados. Antilla et al 22 , em estudo longitudinal, durante dois anos, na Finlândia, que envolveu 60 adolescentes do sexo masculino, mostraram que houve queda nos valores de ferritina sérica no decorrer de dois anos de seguimento, porém não conseguiram correlacionar os estoques de ferro com o ferro sérico, nem tampouco a ferritina com o IMC.…”

Section: Discussionunclassified

Ferro, cobre e zinco em adolescentes no estirão pubertário

Urbano¹,

Vitalle²,

Juliano³

et al. 2002

J. Pediatr. (Rio J.)

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ResumoObjetivo: verificar o estado nutricional relativo ao ferro, cobre e zinco e a correlação entre índice de massa corporal, níveis séricos e dietéticos desses elementos, em adolescentes durante o estirão pubertário.Métodos: estudo descritivo, do tipo corte transversal, envolvendo uma amostra de 47 adolescentes atendidos em ambulatório de adolescência clínica, durante o período de março a dezembro de 1999, que se apresentavam no estirão pubertário, do total de 360 que freqüentaram o ambulatório no período, sendo 19 rapazes na faixa etária de 12,3 a 16 anos, e 28 moças na faixa etária de 11,1 a 13,6 anos. Variáveis analisadas: dietética (recordatório de 24 horas, freqüência e registro alimentar) para determinar a ingestão de ferro, cobre e zinco; antropométrica (peso e altura) para aferição do índice de massa corporal; bioquímica (dosagem sérica de ferro pelo kit in vitro Diagnóstica, ferritina pelo kit Immulite, cobre e zinco por espectrofotometria de absorção atômica). Utilizou-se o coeficiente de Spearman para análise estatistíca.Resultados: dos 47 adolescentes em estirão pubertário, apresentaram ingestão adequada de: ferro (95% e 36%), cobre (53% e 57%) e zinco (21% e 21%) nos sexos masculino e feminino, respectivamente. A maioria dos adolescentes era eutrófica segundo os percentis do IMC. Bioquimicamente, os rapazes apresentaram valores normais para ferro e zinco em toda a amostra; para cobre em 95% e para ferritina em 84%. As moças também apresentaram valores normais de ferro e zinco; para cobre em 96,4% e para ferritina em 96%. Não houve correlação estatisticamente significante entre IMC e concentração sérica de ferro, ferritina, cobre e zinco, e entre concentração sérica e ingestão dietética dos minerais estudados, nem tampouco para a relação ferro sérico e ferritina. Conclusões AbstractObjective: to examine iron, copper and zinc nutritional status and their correlation with Body Mass Index (BMI), serum and dietetic levels in adolescents during the pubertal growth spurt.Methods: a descriptive cross-sectional study involving a sample of 47 adolescents out of 360 patients (19 boys, whose ages ranged from 12.3 to 16 years and 28 girls, whose ages ranged from 11.1 to 13.6 years), who were seen at a clinic for adolescents from March to December 1999. The variables analyzed were: Diet (24 hours Dietary Recall, Food Frequency Intake Questionnaire and Food Register Methods) to determine iron, copper and zinc intake; anthropometry (weight and height) to check BMI; biochemistry (measure of serum iron level through a Diagnóstica kit in vitro; ferritin through Immulite kit, and atomic absorption spectrophotometry for biochemical evaluation of serum iron, ferritin, copper and zinc. Spearman coefficient correlation was used for statistical analysis.Results: forty seven adolescents during pubertal growth spurt showed adequate ingestion: iron (95% and 36%), copper (53% and 57%) and zinc (21% and 21%) in males and females, respectively. Most of them were eutrophic according to the BMI percentiles. Biochemically, boys p...

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“…For both male and female adolescents, the need for iron increases with rapid growth Fig. 5 Comparison of protein RDA of different age groups and the expansion of blood volume and muscle mass [39]. The onset of menstruation imposes additional iron needs for girls.…”

Section: Mineralsmentioning

confidence: 98%

Protein and Micronutrient Supplementation in Complementing Pubertal Growth

Jacob¹,

Nair²

2011

Indian J Pediatr

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For several reasons, adolescence is considered as a nutritionally critical period of life. The dramatic increase in physical growth and development puts greater pressure on the need for nutrients, as it is during this period when adolescents experience a weight gain equivalent to 65% of their weight at the beginning of the period or 40% of their final weight, and a height gain equivalent to 15% of their adult height. The requirement of some of the nutrients is as high as, or higher in adolescents than in any other age groups. Moreover, adolescence is a time where the life-style and food habits are influenced by socio-cultural factors resulting in an imbalance in nutrient intake and nutrient inadequacy can result in delayed sexual maturation and can arrest or slow linear growth. With the increasing prevalence of hidden malnutrition among Indian children, adolescence can be the second opportunity to catch up growth and cover the deficits suffered during childhood and to meet the demands of physical and cognitive growth and development, provide adequate stores of energy for illnesses and pregnancy, and prevent adult onset of nutrition-related diseases. Adolescents should be recognized as a priority target group as an integral part of health promotion and optimal nutrition through balanced diet and nutrient supplementation should be promoted in conjunction with healthy eating habits and physical activity.

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Body iron stores in relation to growth and pubertal maturation in healthy boys

Cited by 19 publications

References 11 publications

A follow‐up study of serum ferritin and transferrin receptor concentrations in Swedish adolescents at age 17 years compared to age 15

A follow‐up study of serum ferritin and transferrin receptor concentrations in Swedish adolescents at age 17 years compared to age 15

Ferro, cobre e zinco em adolescentes no estirão pubertário

Protein and Micronutrient Supplementation in Complementing Pubertal Growth

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