Key result
Preterm birth in rats intensifies early postnatal myocardial growth and cardiomyocyte proliferation versus full-term animals.
Why the study?
Preterm birth in humans is associated with predisposition to cardiovascular pathologies in adulthood, but the pathogenetic mechanisms remain unstudied.
Does preterm birth affect the development of the left ventricular myocardium in rats during the early postnatal period?
Population
Male Wistar rats born after 21, 21.5, and 22 days of gestation
Comparison
Preterm birth (21 and 21.5 days) vs full-term birth (22 days)
Design
Preclinical study with histology, immunohistochemistry, and morphometry
Follow-up
14 days postnatal period
Authors
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May link preterm birth to later CV risk via early remodeling; hypothesis-generating in rats, needs human validation.
Does preterm birth affect the development of the left ventricular myocardium in rats during the early postnatal period?
Preterm birth in rats leads to the intensification of myocardial growth and morphofunctional changes in the early postnatal period, potentially explaining the predisposition to cardiovascular pathologies in adulthood.
Иванова et al. (2022) studied Preterm birth. Preterm birth vs. Full-term birth (22 days of gestation) was evaluated on Myocardial development (relative heart mass, cardiomyocyte diameter, and proliferation). Preterm birth in rats intensified myocardial growth in the early postnatal period, increasing relative heart mass, cardiomyocyte diameter, and proliferation compared to full-term animals.
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