Efecto del precondicionamiento hipóxico en la respuesta a un insulto hiperóxico en el sistema nervioso central de ratones recién nacidos

2017

Mammal fetal life elapses in a low oxygen environment relative to the extra uterine. Interestingly, in the human being partial pressure of oxygen increases from fetal 3.3 kPa (25–30 mmHg) to 10.5 kPa (75–85 mmHg) in the first minutes after birth in the newly born infant. This rapid and brisk increase in oxygen availability to tissue generates a physiologic oxidative stress. However, both the lungs and the antioxidant defense system do not mature until late in gestation. Therefore, preterm infants often need respiratory support and oxygen supplementation in the delivery room to achieve postnatal stabilization. The use of supplementary oxygen will cause oxidative stress and damage. In experim…