Evidence map›Paper›PMID 41015647›Full record

ArticlePediatric research2026

Long-term multi-organ system abnormalities in mice exposed to antenatal and postnatal corticosteroids.

Julie A Dillard, Emily X Royse, Noah H Hillman

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Article in Pediatric research, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

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0 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

3 authors.

Julie A DillardDivision of Neonatology, Akron Children's Hospital, Akron, OH, USA. jdillard@akronchildrens.org.ORCID http://orcid.org/0000-0003-3391-5154
Emily X RoyseDivision of Neonatology, Cardinal Glennon Children's Hospital, Saint Louis University, Saint Louis, MO, USA.
Noah H HillmanDivision of Neonatology, Cardinal Glennon Children's Hospital, Saint Louis University, Saint Louis, MO, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExogenous corticosteroid exposure is common in premature infants and can interfere with normal developmental processes. It remains unknown if there are long-term alterations to cardiometabolic health following antenatal corticosteroid (ANCS) plus postnatal corticosteroid (PNCS) exposure.

methodsPregnant mice received intraperitoneal (IP) injections of dexamethasone 0.5 mg/kg on gestational days 15-16. Pups delivered naturally. On postnatal days (PD) 1-3, offspring received IP injections of dexamethasone 1.2 mg/kg or saline control. On PD 90, offspring were euthanized and organs harvested for study.

resultsCompared to ANCS alone, offspring exposed to ANCS + PNCS had decreased body weights, and lungs had alveolar simplification with increased mean linear intercept and decreased radial alveolar count. Exposure to ANCS + PNCS increased cardiomyocyte diameter compared to ANCS alone. Mice exposed to ANCS + PNCS had attenuation in liver mRNA levels in genes responsible for energy homeostasis including adiponectin, peroxisome proliferator-activated receptor gamma coactivator 1-alpha, and sirtuin 1, and alterations in free fatty acids.

conclusionsYoung adult mice exposed to ANCS + PNCS compared to ANCS alone have evidence of lung simplification, cardiomyocyte hypertrophy, and metabolism-related gene alterations in liver. This study is limited by the lack of a control group with no exposure to corticosteroids. IMPACT: Antenatal + short course of postnatal corticosteroid exposure (3 days) results in long-term multi-organ system changes in adult mice. Mice exposed to antenatal + postnatal corticosteroids exhibit impaired alveolarization, cardiomyocyte hypertrophy, and metabolic alterations in young adulthood. Corticosteroids are a common exposure in premature infants and may contribute to long-term morbidities in this population.

Indexed as

Adrenal Cortex HormonesDexamethasonePrenatal Exposure Delayed EffectsAnimalsAnimals, NewbornFemaleLiverLungMaleMiceMice, Inbred C57BLMyocytes, CardiacPregnancyAdrenal Cortex HormonesDexamethasone

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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.