Genetic predisposition to acute lung injury in cardiac surgery ‘The VEGF Factor’: Review article and bibliometric analysis

Acute lung injury (ALI) and acute respiratory distress syndrome (ARDS) are among the most prevalent complications associated with cardiac surgery involving extracorporeal circulation (ECC), contributing to adverse outcomes and representing a significant impediment to successful cardiac surgical procedures. Vascular endothelial growth factor (VEGF) is implicated in the etiology of ALI/ARDS; however, its precise role remains a subject of debate due to the presence of somewhat contradictory findings in the literature, necessitating further investigation. To date, numerous studies have explored the role of VEGF in the pathophysiology of ALI/ARDS, with ongoing discussions regarding whether VEGF exerts a protective or detrimental effect. The genetic polymorphism of the VEGF gene is a significant factor in the development of ALI/ARDS. Research has indicated that the prevalence of the VEGF polymorphic gene is markedly higher in postoperative cardiac surgery patients who develop ALI/ARDS compared to the general population. Furthermore, the mortality rate among patients possessing the VEGF polymorphic gene is significantly elevated. Concurrently, it has been demonstrated that ARDS patients who are positive for the VEGF polymorphism exhibit a reduction in VEGF levels within alveolar lavage fluid, which correlates with an exacerbation of lung injury. The present paper provides a comprehensive review of the genetic polymorphisms of VEGF and their implications in the pathophysiological alterations observed in postoperative cardiac surgery patients with ALI/ARDS, thereby offering novel insights and evidence to further elucidate the mechanisms underlying ALI/ARDS.