Effects of extremely preterm birth on cytokine and chemokine responses induced by T-cell activation during infancy

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Govindaraj, DhanapalLinköpings universitet,Avdelningen för inflammation och infektion,Medicinska fakulteten (författare)

Effects of extremely preterm birth on cytokine and chemokine responses induced by T-cell activation during infancy

Artikel/kapitelEngelska2024

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WILEY,2024
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LIBRIS-ID:oai:DiVA.org:liu-203799
https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-203799URI
https://doi.org/10.1002/cti2.1510DOI

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Språk:engelska
Sammanfattning på:engelska

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Funding Agencies|Swedish Research Council [2016-01715_3]; Swedish Society for Medical Research; Swedish Society of Medicine; Research Council for South-East Sweden; ALF Grants; Region Ostergotland; BioGaia AB; Cancer and Allergy Foundation; Hesselman Foundation; Golden Jubilee Memorial Foundation; Freemasons of Sweden; Stockholm University; Medical Inflammation and Infection Center (MIIC); Linkoping University; [2020-01839_3]; [921.2014-7060]
Objectives: Extremely preterm (EPT; gestational week < 28 + 0, < 1000 g) neonates are vulnerable to infections and necrotising enterocolitis, important contributors to mortality and morbidity. However, knowledge regarding their immune maturation remains limited. We here investigated the longitudinal development of functional T-cell capacity in EPT infants. Methods: Peripheral blood mononuclear cells were isolated at 14th and 28th day (D) and at gestational week 36 + 0 (Gw36) from EPT infants, participated in a randomised, double-blind, placebo-controlled study of Lactobacillus reuteri DSM 17938 probiotic supplementation. Blood collected from 25 full-term (FT) infants at D14 was used as control. The secretion of immune mediators was determined through comprehensive Luminex panels after stimulation with human T-cell activator CD3/CD28 beads. Results: The levels of many mediators were low in EPT infants at D14, whereas the secretion of several chemokines was higher in EPT than in FT infants. Furthermore, Th2:Th1 cytokine ratios were higher in EPT than in FT infants. Progressively elevated secretion of, for example, IFN-gamma, TNF and IL-17A in EPT infants was observed from D14 to D28 and then at Gw36. Elevated levels were observed for many proinflammatory mediators at D28. Probiotic supplementation or perinatal factors (e.g. clinical chorioamnionitis, preeclampsia and delivery mode) did not influence the cytokine and chemokine responses. Conclusions: Immune mediators induced by T-cell activation in EPT infants were mainly reduced at D14 and Th2 skewed compared to those in FT infants, but mostly recovered at Gw36, indicating immune maturation. Increased proinflammatory responses at D28 may be related to the heightened risk of severe immune-associated complications seen in EPT infants.

Ämnesord och genrebeteckningar

MEDICIN OCH HÄLSOVETENSKAP Klinisk medicin Pediatrik hsv//swe
MEDICAL AND HEALTH SCIENCES Clinical Medicine Pediatrics hsv//eng
chemokines; cytokines; neonatal immunity; preterm neonates; T-cell activation

Biuppslag (personer, institutioner, konferenser, titlar ...)

Bach Jensen, GeorgLinköpings universitet,Avdelningen för barns och kvinnors hälsa,Medicinska fakulteten,Region Östergötland, H.K.H. Kronprinsessan Victorias barn- och ungdomssjukhus(Swepub:liu)geoba98 (författare)
Qazi, Khaleda RahmanStockholm Univ, Sweden (författare)
Sverremark-Ekstrom, EvaStockholm Univ, Sweden (författare)
Abrahamsson, ThomasLinköpings universitet,Avdelningen för barns och kvinnors hälsa,Medicinska fakulteten,Region Östergötland, H.K.H. Kronprinsessan Victorias barn- och ungdomssjukhus(Swepub:liu)thoab97 (författare)
Jenmalm, MariaLinköpings universitet,Avdelningen för inflammation och infektion,Medicinska fakulteten(Swepub:liu)marje18 (författare)
Linköpings universitetAvdelningen för inflammation och infektion (creator_code:org_t)

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Ingår i:Clinical & Translational Immunology (CTI): WILEY13:52050-0068

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Av författaren/redakt...: Govindaraj, Dhan ...; Bach Jensen, Geo ...; Qazi, Khaleda Ra ...; Sverremark-Ekstr ...; Abrahamsson, Tho ...; Jenmalm, Maria

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