Lysozyme, lactoferrin, and secretory immunoglobulin A content in breast milk: influence of duration of lactation, nutrition status, prolactin status, and parity of mother

Milk lactoferrin (LF), lysozyme (LZ), and secretory IgA (slgA) were measured cross-sectionally in 127 Zaïrean mothers, lactating ≥ 18 mo. The 54 urban mothers were of marginal nutrition status [body mass index (BMI) 22.6 ± 2.6 kg/m2 and albumin 33.1 ± 4.5 g/L]. The neighboring rural mothers were of...

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Bibliographic Details
Published in:	The American journal of clinical nutrition Vol. 53; no. 1; pp. 32 - 39
Main Authors:	Hennart, PF, Brasseur, DJ, Delogne-Desnoeck, JB, Dramaix, MM, Robyn, CE
Format:	Journal Article
Language:	English
Published:	Bethesda, MD Elsevier Inc 01-01-1991 American Society for Clinical Nutrition
Subjects:	Adult Analysis of Variance Biological and medical sciences chemical composition composicion quimica composition chimique Democratic Republic of the Congo duracion de la lactancia duree de la lactation Female femme Human milk human nutrition Humans Immunoglobulin A, Secretory - metabolism immunoglobuline immunoglobulins inmunoglobulina lactacion Lactation lactation duration lactoferrin Lactoferrin - metabolism lactoferrinas lactoferrine lait humain leche humana lisozima lysozyme madre Medical sciences mere Metabolic diseases Milk, Human - metabolism mothers mujeres Muramidase - metabolism nutricion humana nutrition nutrition humaine Nutritional Status Other nutritional diseases (malnutrition, nutritional and vitamin deficiencies...) Parity prolactin Prolactin - metabolism Regression Analysis Rural Population secretory IgA Time Factors Tropical medicine Urban Population women zaire Democratic Republic of the Congo nutrition lysozyme prolactin parity Human milk lactoferrin secretory IgA Human IgA Immunoglobulins Lactoferrin Female Malnutrition Nutritional status Lysozyme
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Summary:	Milk lactoferrin (LF), lysozyme (LZ), and secretory IgA (slgA) were measured cross-sectionally in 127 Zaïrean mothers, lactating ≥ 18 mo. The 54 urban mothers were of marginal nutrition status [body mass index (BMI) 22.6 ± 2.6 kg/m2 and albumin 33.1 ± 4.5 g/L]. The neighboring rural mothers were of significantly (P < 0.001) poorer nutrition status (BMI 20.5 ± 2.2 kg/m2 and albumin 27.7 ± 5.4 g/L). In both urban and rural mothers, as lactation progressed LF decreased by 33% and 55% whereas sIgA remained unchanged and LZ steadily increased. There was more LZ and sIgA in rural milk, contrasting with the poorer maternal nutrition. As calculated from individual milk yields, the urban infants were fed daily with twice as much LF and sIgA but with similar amounts of LZ as were the rural infants. In the early stage of lactation, the milk of both groups of Zairean mothers contains more sIgA than that of a group of west European (Belgian) mothers (n = 20), but the LF and LZ contents were rather similar.
Bibliography:	S20 S ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 ObjectType-Article-1 ObjectType-Feature-2
ISSN:	0002-9165 1938-3207
DOI:	10.1093/ajcn/53.1.32