Acute kidney injury (AKI) refers to a clinical syndrome characterized by a rapid (hours to days) decrease in renal function, which is a common and important diagnostic and therapeutic challenge for clinicians. The disorder has a frequency of 7.0 % in hospital inpatients and is especially common in critically ill patients, in whom the prevalence of acute kidney injury is greater than 40% at admission to the intensive care unit if sepsis is present. AKI is independently associated with important morbidity and mortality although many efforts have been used in past years. Therefore, alternative strategies are required to confer better or more complete renoprotection for those who suffered from AKI.