Evidence map›Paper›PMID 30127252›Full record

ReviewNutrients2018

Variation in the Protein Composition of Human Milk during Extended Lactation: A Narrative Review.

Sergio Verd, Gemma Ginovart, Javier Calvo, Jaume Ponce-Taylor, Antoni Gaya

Open access · goldAbstract readReview
In one paragraph

Review in Nutrients, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.0field-weighted citation impact, top 9% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

21 citing papers in PubMed, 38 citations in OpenAlex.

  1. Exclusive Breastfeeding and Growth Trajectories Until 5 Years of Age Among Children Monitored in Primary Health Care in Brazil.American journal of human biology : the official journal of the Human Biology Council · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Influence of maternal and perinatal factors on macronutrient content of very preterm human milk during the first weeks after birth.Journal of perinatology : official journal of the California Perinatal Association · 2023
    Article
  7. Article
  8. Article
  9. Cellular and transcriptional diversity over the course of human lactation.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Observational
  15. Observational
  16. Observational
  17. Article
  18. Article
  19. Review
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 2 institutions in 1 country.

Sergio VerdPediatric Division, Department of Primary Care, La Vileta Surgery, 07013 Palma de Mallorca, Spain. drsverd@gmail.com.ORCID 0000-0002-0261-8811
Gemma GinovartNeonatal Unit, Department of Pediatrics, Hospital de la Santa Creu i Sant Pau, 89 Sant Quinti St, 08041 Barcelona, Spain. gginovart@santpau.cat.ORCID 0000-0001-8072-1681
Javier CalvoBlood and Tissue Bank of the Balearic Islands (Milk Bank), 07004 Palma de Mallorca, Spain. jcalvo@fbstib.org.ORCID 0000-0002-1732-9449
Jaume Ponce-TaylorPediatric Division, Department of Primary Care, La Vileta Surgery, 07013 Palma de Mallorca, Spain. jaume.ponce@gmail.com.ORCID 0000-0002-4146-2135
Antoni GayaBlood and Tissue Bank of the Balearic Islands (Milk Bank), 07004 Palma de Mallorca, Spain. agaya@fbstib.org.ORCID 0000-0002-2200-5801
Health Research Institute of the Balearic Islands · ESHospital de Sant Pau · ES

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this review is to evaluate changes in protein parameters in the second year postpartum. There is considerable agreement among authors about the declining trend of human milk protein concentrations, but most research on protein content in breast milk focuses on the first year of life and comes from developed countries. Whereas this is the case for exclusive breastfeeding or for breastfeeding into the first year of life, the opposite applies to weaning or extended breastfeeding. This review is predominantly based on observational epidemiological evidence and on comparative research linking breast milk composition with cutting down on breastfeeding. Studies dating back several decades have shown an increase in the proportion of immunoglobulins, lactoferrin, and serum albumin during weaning. According to the limited data available, it seems likely that the regulation of milk protein composition during involution can be ascribed to alterations in tight junctions. In studies on humans and other mammalian species, offspring suckle more from mothers that produce more dilute milk and the increase in milk protein concentration is positively correlated to a decrease in suckling frequency during weaning. High milk protein contents were first reported in nonindustrial communities where breastfeeding is sustained the longest, but recent papers from urbanized communities have taken credit for rediscovering the increase in protein content of human milk that becomes evident with prolonged breastfeeding. This review presents an overview of the changes in breast milk protein parameters in the second year postpartum to enable milk banks' practitioners to make informed nutritional decisions on preterm infants.

Indexed as

LactationBreast FeedingFemaleHumansImmunoglobulinsInfantLactoferrinMilk, HumanMilk ProteinsPostpartum PeriodSerum AlbuminWeaningImmunoglobulinsLactoferrinMilk ProteinsSerum Albuminbreastfeedinghuman milk physiologylactation chemistrymilk banknutritional requirementspremature infant

Identifiers

PMID30127252
PMCPMC6115717
OpenAlexW2886230523

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.