Effect of tadalafil on pulmonary hypoplasia in congenital diaphragmatic hernia of rat fetuses
Abstract
Background. Pulmonary hypoplasia and persistent pulmonary hypertension in congenital diaphragmatic hernia are the cause of adverse perinatal outcomes. Dissatisfaction with the outcomes of intrauterine surgical correction of CDH determines the search for alternative non-surgical prenatal methods of treating pulmonary hypoplasia in CDH. Objective. To study the effect of a reversible selective inhibitor of specific phosphodiesterase type 5 (tadalafil) on the development of fetal lungs in rats in a model of congenital diaphragmatic hernia. Design and methods. An experimental study was conducted on the possibility of correcting fetal lung hypoplasia in rats when modeling a diaphragmatic hernia with nitrophen (100 mg orally, once on the 9th day of pregnancy). Results. Congenital diaphragmatic hernia was recorded in 12.5 % of offspring. Subcutaneous administration of tadalafil to pregnant rats (0,83 mg/kg, for 10 days, from the 9th day of pregnancy) in the lungs of fetuses increases the number of alveoli (by 22 % at p ≤ 0.05), the area of microvasculature vessels and the volume of lung parenchyma increases (by 1.25 % and 1.13 % more (at p ≤ 0.05)). Conclusion. The results obtained from the first experiment conducted in the Russian Federation to study the effect of tadalafil on the lungs in congenital diaphragmatic hernia of the fetus are comparable with the data of the authors who used sildenafil, however, the use of tadalafil seems more optimal due to the ease of its…
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