Early Cardiovascular Changes after Intrauterine Growth Restriction in Rats
Author Information
Author(s): Menendez-Castro Carlos, Fahlbusch Fabian, Cordasic Nada, Amann Kerstin, Münzel Kathrin, Plank Christian, Wachtveitl Rainer, Rascher Wolfgang, Hilgers Karl F., Hartner Andrea
Primary Institution: University of Erlangen-Nürnberg
Hypothesis
IUGR leads to primary myocardial and vascular alterations before the onset of hypertension.
Conclusion
IUGR results in early changes in the expression of profibrotic genes and structural abnormalities in the cardiovascular system, which may predispose to cardiovascular disease later in life.
Supporting Evidence
- IUGR rats showed a 3.2-fold increase in CTGF expression in aortas at birth.
- At day 70, collagen I expression was increased 5.6-fold in aortas of IUGR rats.
- Cell proliferation was more prominent in the hearts of neonate IUGR rats compared to controls.
- At day 70, osteopontin expression was induced 7.2-fold in IUGR hearts.
- Changes in profibrotic cytokines were observed in IUGR rats independent of blood pressure.
Takeaway
When baby rats don't get enough protein while growing in their mom's belly, it can change their hearts and blood vessels, making them more likely to have heart problems when they grow up.
Methodology
The study used a rat model of IUGR induced by maternal protein restriction, with various analyses including immunohistochemistry and real-time PCR on myocardial and vascular tissues.
Potential Biases
Potential variability in outcomes due to differences in maternal nutrition and the timing of protein restriction.
Limitations
The study is limited to the protein restriction model in rats, which may not fully represent IUGR in humans.
Participant Demographics
Virgin female Wistar rats were used as subjects.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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