Cited by 9Birth, Development, and HealthGestational Diabetes Research and ManagementCongenital heart defects research

Gestational hyperglycemia reprograms cardiac gene expression in rat offspring

Lehtoranta, Lara, Koskinen, Anna, Vuolteenaho, Olli, Laine, Jukka, Kytö, Ville, Soukka, Hanna, Ekholm, Eeva, Räsänen, Juha·2017·Pediatric Research

Abstract

BackgroundRat fetuses with maternal pregestational hyperglycemia develop cardiac dysfunction, and their cardiac gene expression differs from that of healthy control fetuses near term. We hypothesized that cardiac gene expression and morphologic abnormalities of rat fetuses with maternal pregestational hyperglycemia become normal after birth.MethodsNine rats were preconceptually injected with streptozotocin to induce maternal hyperglycemia and nine rats served as controls. The hyperglycemia group comprised 82 mice and the control group 74 offspring fed by euglycemic dams. Hearts of the offspring were collected on postnatal days 0, 7, and 14, and processed for histologic and gene expression analyses.ResultsOn day 0, heart weight was increased, and expression of cardiac genes involved in contractility, growth, and metabolism was decreased in the hyperglycemia group. On day 7, although cardiomyocyte apoptosis was enhanced, most of the changes in gene expression had normalized in the hyperglycemia group. By day 14, the expression of genes important for myocardial growth, function, and metabolism was again abnormal in the hyperglycemia group.ConclusionMost cardiac gene expression abnormalities become transiently normal during the first week of life of offspring to hyperglycemic rats. However, by day 14, cardiac expressions of genes involved in growth, function, and metabolism are again abnormal in relation to control offspring.

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Crossref · 10.1038/pr.2017.42

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Authors
Lehtoranta, L., Koskinen, A., Vuolteenaho, O., Laine, J., Kytö, V., Soukka, H., Ekholm, E., & Räsänen, J.
Affiliations
University of Turku (FI)
Corresponding author
Lehtoranta, Lara
Venue
Pediatric Research
Published
2017-05-31
Volume
82
Issue
2
Pages
356-361
ISSN
  • 0031-3998 (ISSN-L)
  • 1530-0447
OpenAlex
W2596518609
Cited by
9
References
33
Citations by year
2024: 2 · 2023: 1 · 2022: 4 · 2021: 1 · 2018: 1
FWCI
0.30
Type
journal article
Language
en
Open access
closed
Locations
  • Pediatric Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Birth, Development, and Health
  • Health Sciences › Medicine › Obstetrics and Gynecology › Gestational Diabetes Research and Management
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Congenital heart defects research
Keywords
hyperglycemia in pregnancy, cardiac gene expression, fetal heart, cardiomyocyte apoptosis, myocardial growth, myocardial metabolism, postnatal development, streptozotocin-induced diabetes, diabetic cardiomyopathy
MeSH terms
Animals, Body Weight, Female, Hyperglycemia, Myocardium, Organ Size, Pregnancy, Pregnancy Complications, Prenatal Exposure Delayed Effects, Streptozocin, Gene Expression, Diabetes, Gestational, Reverse Transcriptase Polymerase Chain Reaction, Rats

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