Acute kidney injury is a critical medical syndrome characterized by an abrupt decrease in kidney function, typically occurring over hours to days. As a prominent area of clinical and translational research, it investigates the diverse etiologies, underlying cellular and molecular mechanisms, precise diagnostic biomarkers, optimal management strategies, and prognostic indicators associated with this rapid loss of renal capacity, aiming to mitigate its substantial impact on patient outcomes and global health. Research in this field encompasses the study of structural damage and functional impairment across various clinical settings, highlighting its significance as a major public health burden and a key challenge in critical care and nephrology.