Longitudinal Study on Selenium Content in Human Milk Particularly During Early Lactation Compared to that in Infant Formulas and Cow's Milk in Japan

Tamari, Yuzo; Chayama, Kazuaki; Tsuji, Hirokazu

doi:10.1016/s0946-672x(11)80006-4

Cited by 18 publications

(5 citation statements)

References 12 publications

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“…However, this may not place Kuwait within the region of high dietary selenium until a more extensive screening of other population categories has been performed. The present observation of decreased concentration of selenium in milk produced later in lactation is in agreement with several other studies (24)(25)(26). This decline in the milk selenium concentration could be partly attributed to the decreased protein levels in the milk.…”

Section: Discussionsupporting

confidence: 93%

Determination of selenium concentration and its chemical forms in the milk of Kuwaiti and non-Kuwaiti lactating mothers

Al-Awadi

Srikumar

2001

J. Trace Elem. Exp. Med.

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The objectives of the present study were to compare the selenium status in the milk and plasma of Kuwaiti mothers with that of non‐Kuwaiti mothers during 0–18 months of lactation and to identify and compare the chemical forms of selenium in human milk and cow milk. Thirty‐four donors between 25 to 40 years of age (Kuwaitis, n = 17; non‐Kuwaitis, n = 17) were studied. Milk samples were obtained prior to the first feeding of the infant and blood samples were collected shortly after. Milk fractionation was performed by ultracentrifugation, gel‐column chromatography, and thin‐layer chromatography. Concentrations of selenium were analyzed using atomic absorption spectrophotometry and glutathione‐peroxidase by spectrophotometry. Concentrations of selenium in milk and plasma and content of proteins in milk were significantly higher in the Kuwaiti group than those of the non‐Kuwaitis during the first 12 months of lactation. The selenium profile in milk was parallel with those of total proteins, casein, and whey. In general, these parameters including the activity of glutathione‐peroxidase, were decreased as lactation was prolonged. The major chemical form of selenium in human milk was found to be selenomethionine. Cow milk did not appear to contain this compound, but might have a free selenium form that is neither selenite nor selenate. In conclusion, 1) the higher level of selenium in the milk of Kuwaiti mothers may reflect the high protein content of regional diets and traditional treatment with herbal medicines during post‐parturition and 2) selenomethionine is the major selenium‐containing compound located in the whey protein fraction of human milk, and this may enhance the bio‐availability of selenium. J. Trace Elem. Exp. Med. 14:57–67, 2001. © 2001 Wiley‐Liss, Inc.

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Section: Discussionsupporting

confidence: 93%

Determination of selenium concentration and its chemical forms in the milk of Kuwaiti and non-Kuwaiti lactating mothers

Al-Awadi

Srikumar

2001

J. Trace Elem. Exp. Med.

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“…In our study, the amount of selenium in the human milk satisfied the CON/AAP recommendations, but not the recommendations of the European Society of Pediatric Gastroenterology, Hepatology and Nutrition (ESPGHAN), the latter recommends (4.5-9 µg/100 kcal) (19). These recommendations differ because of geographic differences in the amount of selenium stored in the infant body, the dietary habits of different populations, and geological differences in the soils of different regions (20). …”

Section: Discussionmentioning

confidence: 99%

Longitudinal Study on Trace Mineral Compositions (Selenium, Zinc, Copper, Manganese) in Korean Human Preterm Milk

et al. 2012

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We measured selenium, zinc, copper and manganese concentrations in the human milk of Korean mothers who gave birth to preterm infants, and compared these measurements with the recommended daily intakes. The samples of human milk were collected postpartum at week-1, -2, -4, -6, -8, and -12, from 67 mothers who gave birth to preterm infants (< 34 weeks, or birth weight < 1.8 kg). All samples were analyzed using atomic absorption spectrophotometry. The concentrations of selenium were 11.8 ± 0.5, 11.4 ± 0.8, 12.7 ± 0.9, 11.4 ± 0.8, 10.8 ± 0.9, and 10.5 ± 1.3 µg/L, zinc were 7.8 ± 0.5, 9.1 ± 0.8, 7.2 ± 0.9, 8.0 ± 0.8, 7.4 ± 0.9, and 6.6 ± 1.2 mg/L, copper were 506 ± 23.6, 489 ± 29.4, 384 ± 33.6, 356 ± 32.9, 303 ± 35.0, and 301 ± 48.0 µg/L and manganese were 133 ± 4.0, 127 ± 6.0, 125 ± 6.0, 123 ± 6.0, 127 ± 6.0, and 108 ± 9.0 µg/L at week-1, -2, -4, -6, -8, and -12, respectively. The concentrations of selenium and zinc meet the daily requirements but that of copper is low and of manganese exceeds daily requirements recommended by the American Academy of Pediatrics, Committee on Nutrition.

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“…Human infants are born with selenium reserves but also depend on the selenium supplied by their mothers' milk (235). Selenium concentrations are high in colostrum and decrease as lactation progresses (153,(236)(237)(238)(239), parallel with the trend for the milk proteins into which selenium is incorporated (235).…”

Section: Seleniummentioning

confidence: 99%

Overview of Nutrients in Human Milk

Dror

Allen

2018

Advances in Nutrition

232

220

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The WHO recommends exclusive breastfeeding for the first 6 mo of life to promote optimal infant health and development. Understanding the micro- and macronutrient concentrations of human milk and how each nutrient fluctuates with lactational stage, maternal factors, and supplementation is imperative for supporting good breastfeeding practices. Where maternal undernutrition compromises human milk quality, a thorough awareness of the effectiveness of interventions can direct efforts to achieve both maternal and infant nutrient sufficiency. This review of current knowledge covers trends in nutrient concentrations over the course of lactation and describes the influence of maternal intake, status, supplementation, and other factors on human milk concentrations of each nutrient.

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Longitudinal Study on Selenium Content in Human Milk Particularly During Early Lactation Compared to that in Infant Formulas and Cow's Milk in Japan

Cited by 18 publications

References 12 publications

Determination of selenium concentration and its chemical forms in the milk of Kuwaiti and non-Kuwaiti lactating mothers

Determination of selenium concentration and its chemical forms in the milk of Kuwaiti and non-Kuwaiti lactating mothers

Longitudinal Study on Trace Mineral Compositions (Selenium, Zinc, Copper, Manganese) in Korean Human Preterm Milk

Overview of Nutrients in Human Milk

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