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Rodríguez-Camejo C, Puyol A, Fazio L, Rodríguez A, Villamil E, Andina E, Cordobez V, Díaz H, Lemos M, Siré G, Carroscia L, Castro M, Panizzolo L, Hernández A. Antibody Profile of Colostrum and the Effect of Processing in Human Milk Banks: Implications in Immunoregulatory Properties. J Hum Lact 2018; 34:137-147. [PMID: 28586632 DOI: 10.1177/0890334417706359] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND When feeding preterm infants, donor milk is preferred if the mother's own milk is unavailable. Pasteurization may have detrimental effects on bioactivity, but more information is needed about its effects on the immunological compounds. Research aim: This work has two main aims: evaluate the antibody profile of colostrum and study the quantitative variations in the antibodies' level and specific reactivity after undergoing Holder pasteurization. The authors focused on immunoregulatory components of colostrum (antidietary antibodies and TGF-β2) in the neonatal gut. METHODS This is a descriptive cross-sectional study of a convenience sample of 67 donated colostrum samples at different days after delivery, both raw and pasteurized. Antibody profiles were analyzed at different times during breastfeeding, and total and specific antibodies (IgM, IgA, and IgG subclasses) were compared with tetanus toxoid and ovalbumin using enzyme-linked immunosorbent assay. The processing effect on total and specific antibodies, as well as TGF-β2, was evaluated by paired analyses. RESULTS No variations in immunological compounds were observed throughout the colostrum stage. The TGF-β2, antibodies' concentrations, and antibodies' specific reactivity after pasteurization did not vary significantly as days of lactation varied. Changes in antibody levels were dependent on isotype and IgG subclass, and IgG4 showed remarkable resistance to heating. Moreover, the effect of the pasteurization on specific reactivity was antigen dependent. CONCLUSION The supply of relevant immunological components is stable throughout the colostrum stage. The effects of pasteurization on antibodies depend on isotype, subclass, and specificity. This information is relevant to improving the immunological quality of colostrum, especially for preterm newborns.
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Affiliation(s)
- Claudio Rodríguez-Camejo
- 1 Cátedra de Inmunología, Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Arturo Puyol
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Laura Fazio
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Analía Rodríguez
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Emilia Villamil
- 1 Cátedra de Inmunología, Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Eliana Andina
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Vanira Cordobez
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Hernán Díaz
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Mary Lemos
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Gabriela Siré
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Lilián Carroscia
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Mara Castro
- 2 Banco de Leche "Ruben Panizza," Centro Hospitalario Pereira Rossell, Administración de los Servicios de Salud del Estado, Montevideo, Uruguay
| | - Luis Panizzolo
- 3 Departamento de Ciencia y Tecnología de los Alimentos, Facultad de Química, Universidad de la República, Montevideo, Uruguay
| | - Ana Hernández
- 1 Cátedra de Inmunología, Facultad de Ciencias-Facultad de Química, Universidad de la República, Montevideo, Uruguay
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Lis-Kuberka J, Kątnik-Prastowska I, Berghausen-Mazur M, Orczyk-Pawiłowicz M. Lectin-based analysis of fucosylated glycoproteins of human skim milk during 47 days of lactation. Glycoconj J 2015; 32:665-74. [PMID: 26318738 PMCID: PMC4651984 DOI: 10.1007/s10719-015-9615-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 08/06/2015] [Accepted: 08/10/2015] [Indexed: 01/01/2023]
Abstract
Glycoproteins of human milk are multifunctional molecules, and their fucosylated variants are potentially active molecules in immunological events ensuring breastfed infants optimal development and protection against infection diseases. The expression of fucosylated glycotopes may correspond to milk maturation stages. The relative amounts of fucosylated glycotopes of human skim milk glycoproteins over the course of lactation from the 2nd day to the 47th day were analyzed in colostrums, transitional and mature milk samples of 43 healthy mothers by lectin-blotting using α1-2-, α1-6-, and α1-3-fucose specific biotinylated Ulex europaeus (UEA), Lens culinaris (LCA), and Lotus tetragonolobus (LTA) lectins, respectively. The reactivities of UEA and LCA with the milk glycoproteins showed the highest expression of α1-2- and α1-6-fucosylated glycotopes on colostrum glycoproteins. The level of UEA-reactive glycoproteins from the beginning of lactation to the 14th day was high and relatively stable in contrast to LCA-reactive glycoproteins, the level of which significantly decreased from 2–3 to 7–8 days then remained almost unchanged until the 12th–14th days. Next, during the progression of lactation the reactivities with both lectins declined significantly. Eighty percent of α1-2- and/or α1-6-fucosylated glycoproteins showed a high negative correlation with milk maturation. In contrast, most of the analyzed milk glycoproteins were not recognized or weakly recognized by LTA and remained at a low unchanged level over lactation. Only a 30-kDa milk glycoprotein was evidently LTA-reactive, showing a negative correlation with milk maturation. The gradual decline of high expression of α1-2- and α1-6-, but not α1-3-, fucoses on human milk glycoproteins of healthy mothers over lactation was associated with milk maturation.
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Affiliation(s)
- Jolanta Lis-Kuberka
- Department of Chemistry and Immunochemistry, Wrocław Medical University, Bujwida 44a, 50-345, Wrocław, Poland
| | - Iwona Kątnik-Prastowska
- Department of Chemistry and Immunochemistry, Wrocław Medical University, Bujwida 44a, 50-345, Wrocław, Poland
| | - Marta Berghausen-Mazur
- 1st Department and Clinic of Gynaecology and Obstetrics, Wrocław Medical University, T. Chałubińskiego 3, 50-368, Wrocław, Poland
| | - Magdalena Orczyk-Pawiłowicz
- Department of Chemistry and Immunochemistry, Wrocław Medical University, Bujwida 44a, 50-345, Wrocław, Poland.
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