Serum anti-flagellin and anti-lipopolysaccharide immunoglobulins as predictors of linear growth faltering in Pakistani infants at risk for environmental enteric dysfunction
Authors
Syed, SanaIqbal, Najeeha T.
Sadiq, Kamran
Ma, Jennie Z.
Akhund, Tauseef
Xin, Wenjun
Moore, Sean R.
Liu, Enju
Qureshi, Shahida
Gosselin, Kerri B.
Gewirtz, Andrew
Duggan, Christopher P.
Ali, S Asad.
UMass Chan Affiliations
Department of Pediatrics, Division of Gastroenterology and NutritionDocument Type
Journal ArticlePublication Date
2018-03-06Keywords
Bacterial Infections and MycosesDigestive System Diseases
Gastroenterology
Pediatrics
Public Health
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BACKGROUND: Environmental Enteric Dysfunction (EED) in children from low-income countries has been linked to linear growth declines. There is a critical need to identify sensitive and early EED biomarkers. OBJECTIVE: Determine whether levels of antibodies against bacterial components flagellin (flic) and lipopolysaccharide (LPS) predict poor growth. DESIGN/METHODS: In a prospective birth cohort of 380 children in rural Pakistan blood and stool samples were obtained at ages 6 and 9 months. Linear mixed effects models were used to examine longitudinal associations between quartiles of anti-flic and anti-LPS antibodies and changes in LAZ, WAZ and WLZ scores. Spearman's correlations were measured between anti-flic and anti-LPS immunoglobulins with measures of systemic/enteric inflammation and intestinal regeneration. RESULTS: Anti-LPS IgA correlated significantly with CRP, AGP and Reg1 serum at 6mo and with MPO at 9mo. In multivariate analysis at 6mo of age, higher anti-LPS IgA levels predicted greater declines in LAZ scores over subsequent 18mo (comparing highest to lowest quartile, beta (SE) change in LAZ score/year = -0.313 (0.125), p-value = 0.013). Anti-flic Ig A in the two highest quartiles measured at 9mo of age had declines in LAZ of -0.269 (0.126), p = 0.033; and -0.306 (0.129), p = 0.018 respectively, during the subsequent 18mo of life, compared to those in the lowest quartile of anti-flic IgA. CONCLUSIONS AND RELEVANCE: Elevated anti-flic IgA and anti-LPS IgA antibodies at 6 and 9mo, predict declines in linear growth. Systemic and enteric inflammation correlated with anti-LPS IgA provides mechanistic considerations for potential future interventions.Source
PLoS One. 2018 Mar 6;13(3):e0193768. doi: 10.1371/journal.pone.0193768.. Link to article on publisher's site
DOI
10.1371/journal.pone.0193768Permanent Link to this Item
http://hdl.handle.net/20.500.14038/43640PubMed ID
29509790Related Resources
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Copyright: © 2018 Syed et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Distribution License
http://creativecommons.org/licenses/by/4.0/ae974a485f413a2113503eed53cd6c53
10.1371/journal.pone.0193768
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Except where otherwise noted, this item's license is described as Copyright: © 2018 Syed et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.