Evidence map›Paper›PMID 33381802›Full record

ArticleThe American journal of clinical nutrition2021

Infections and systemic inflammation are associated with lower plasma concentration of insulin-like growth factor I among Malawian children.

Kenneth Maleta, Yue-Mei Fan, Juho Luoma, Ulla Ashorn, Jaden Bendabenda, Kathryn G Dewey, Heikki Hyöty, Mikael Knip, Emma Kortekangas, Kirsi-Maarit Lehto and 8 more

Open access · hybridAbstract read
In one paragraph

Article in The American journal of clinical nutrition, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

13 citing papers in PubMed, 17 citations in OpenAlex.

  1. Trial
  2. Malaria Incidence, Growth, and their Relationship among a Cohort of Malawian Children.The American journal of tropical medicine and hygiene · 2026
    Article
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  7. Review
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  10. Observational
  11. Article
  12. Review
  13. IGF-1 and IGFBP-3 in Inflammatory Cachexia.International journal of molecular sciences · 2021
    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

18 authors at 5 institutions in 3 countries.

Kenneth MaletaSchool of Public Health and Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi.
Yue-Mei FanCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Juho LuomaCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Ulla AshornCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Jaden BendabendaSchool of Public Health and Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi.
Kathryn G DeweyInstitute for Global Nutrition and Department of Nutrition, University of California, Davis, CA, USA.
Heikki HyötyDepartment of Virology, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Mikael KnipCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Emma KortekangasCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Kirsi-Maarit LehtoCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Andrew MatchadoSchool of Public Health and Family Medicine, College of Medicine, University of Malawi, Blantyre, Malawi.
Minyanga NkhomaCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Noora NurminenDepartment of Virology, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Seppo ParkkilaFimlab Ltd, Tampere University Hospital, Tampere, Finland.
Sami PurmonenClinical Medicine, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Riitta VeijolaDepartment of Paediatrics, PEDEGO Research Unit, Medical Research Centre, Oulu University Hospital and University of Oulu, Oulu, Finland.
Sami OikarinenDepartment of Virology, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Per AshornCenter for Child Health Research, Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland.
Tampere University · FIUniversity of Malawi · MWOulu University Hospital · FIUniversity of California, Davis · USUniversity of Helsinki · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInsulin-like growth factor I (IGF-I) is the most important hormonal promoter of linear growth in infants and young children.

objectivesThe objectives of this study were to compare plasma IGF-I concentration in a low- compared with a high-income country and characterize biological pathways leading to reduced IGF-I concentration in children in a low-income setting.

methodsWe analyzed plasma IGF-I concentration from 716 Malawian and 80 Finnish children at 6-36 mo of age. In the Malawian children, we studied the association between IGF-I concentration and their environmental exposures; nutritional status; systemic and intestinal inflammation; malaria parasitemia and viral, bacterial, and parasitic enteric infections; as well as growth at 18 mo of age. We then conducted a pathway analysis to identify direct and indirect associations between these predictors and IGF-I concentration.

resultsThe mean IGF-I concentrations were similar in Malawi and Finland among 6-mo-old infants. At age 18 mo, the mean ± SD concentration was almost double among the Finns compared with the Malawians [24.2 ± 11.3 compared with 12.5 ± 7.7 ng/mL, age- and sex-adjusted difference in mean (95% CI): 11.8 (9.9, 13.7) ng/mL; P < 0.01]. Among 18-mo-old Malawians, plasma IGF-I concentration was inversely associated with systemic inflammation, malaria parasitemia, and intestinal Shigella, Campylobacter, and enterovirus infection and positively associated with the children's weight-for-length z score (WLZ), female sex, maternal height, mother's education, and dry season. Seasonally, mean plasma IGF-I concentration was highest in June and July and lowest in December and January, coinciding with changes in children's length gain and preceded by ∼2 mo by the changes in their WLZ.

conclusionsThe mean plasma IGF-I concentrations are similar in Malawi and Finland among 6-mo-old infants. Thereafter, mean concentrations rise markedly in Finland but not in Malawi. Systemic inflammation and clinically nonapparent infections are strongly associated with lower plasma IGF-I concentrations in Malawi through direct and indirect pathways.

Indexed as

BiomarkersChild, PreschoolFecesFinlandHumansInfantInflammationInsulin-Like Growth Factor IMalawiSeasonsBiomarkersInsulin-Like Growth Factor Ichildhood growth falteringhormonal regulationinfectionpathway analysisstuntingsystemic inflammation

Identifiers

PMID33381802
PMCPMC7851819
OpenAlexW3116065282

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.