Open AccessHypoxia Induced DNA Damage in Children with Isolated Septal Defect and Septal Defect with Great Vessel Anomaly of Heart
Author(s) -
B. Vishnu Bhat,
Parkash Chand,
Rao K R
Publication year - 2014
Publication title -
journal of clinical and diagnostic research
Language(s) - English
Resource type - Journals
eISSN - 2249-782X
pISSN - 0973-709X
DOI - 10.7860/jcdr/2014/8177.4233
Subject(s) - dna damage , hypoxia (environmental) , comet assay , cardiology , medicine , pathology , dna , chemistry , biology , oxygen , genetics , organic chemistry
In Congenital Heart Disease (CHD), shunting of blood occurs through the anatomical defects which lead to mixing of oxygenated and deoxygenated blood. Chronic hypoxia which occurs due to the above said mechanism has the potency to cause DNA damage in children with CHD. In chronic hypoxia, there is a liberation of Reactive Oxygen Species (ROS) due to tissue injury as a result of ischemia and induction of hypoxia inducible factor - 1HIF-1 and p53 which in turn activates pro-apoptotic factors leading to alteration in the regulation of pro-apoptotic gene Blc-2 to be involved in causing the DNA damage. The extent of chronic hypoxia and the DNA damage depends on the nature of the anatomical heart defect. Hence, the present case-control study was conducted to find out the DNA damage in children with isolated septal defect and septal defect with great vessel anomaly of heart and to compare the same.