Related Experiment Video

Updated: May 21, 2026

Mouse Model of Acute to Chronic Kidney Disease Transition Induced by Renal Ischemia/Reperfusion Injury
07:02

Mouse Model of Acute to Chronic Kidney Disease Transition Induced by Renal Ischemia/Reperfusion Injury

Published on: February 10, 2026

Double-edged sword: a p53 regulator mediates both harmful and beneficial effects in experimental acute kidney injury

Bairbre A McNicholas, Matthew D Griffin

    Kidney International
    |June 1, 2012
    PubMed

    Insights

    Blocking mdm2 (murine double minute-2) aids kidney regeneration after injury by limiting p53-mediated apoptosis. However, it also increases early inflammation via nuclear factor-κB activation, independent of p53.

    Area of Science:

    • Nephrology
    • Immunology
    • Molecular Biology

    Background:

    • Acute kidney injury (AKI) involves innate immune responses and apoptosis.
    • The p53 pathway is a key proapoptotic program activated in AKI.
    • Murine double minute-2 (mdm2) is a negative regulator of p53.

    Purpose of the Study:

    • To investigate the role of mdm2 inhibition in a mouse model of ischemia-reperfusion induced AKI.
    • To evaluate the effects of nutlin-3a, a novel chemotherapeutic agent that blocks mdm2, on renal regeneration and inflammation.

    Main Methods:

    • Utilized a mouse model of renal ischemia-reperfusion injury.
    • Administered nutlin-3a to block mdm2 activity.
    • Assessed markers of apoptosis, inflammation, and renal regeneration.

    Main Results:

    • mdm2 inhibition by nutlin-3a promoted renal regeneration by limiting p53-mediated apoptosis.
    • mdm2 inhibition enhanced early inflammatory responses.
    • This enhanced inflammation was mediated by nuclear factor-κB (NF-κB) DNA binding, independent of p53.

    Conclusions:

    • mdm2 plays a dual role in AKI, promoting regeneration via p53 but also enhancing inflammation.
    • Targeting mdm2 may offer therapeutic benefits for AKI, but potential inflammatory side effects need consideration.
    • Further research is warranted to balance the pro-regenerative and pro-inflammatory effects of mdm2 inhibition in AKI.

    More Related Videos

    Modeling Hypoxia/Reoxygenation Injury in Proximal Tubular Epithelial Cells06:23

    Modeling Hypoxia/Reoxygenation Injury in Proximal Tubular Epithelial Cells

    Published on: November 21, 2025

    Related Concept Videos

    Acute Kidney Injury II: Pathophysiology01:29

    Acute Kidney Injury II: Pathophysiology

    Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
    Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

    Acute Kidney Injury IV: Diagnostic Studies and Prevention

    Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
    Interactions Between Signaling Pathways01:19

    Interactions Between Signaling Pathways

    Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
    Convergence and divergence, and cross-talk between signaling pathways
    Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
    Acute Kidney Injury I: Introduction01:22

    Acute Kidney Injury I: Introduction

    Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
    Abnormal Proliferation02:23

    Abnormal Proliferation

    Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the daughter...
    Acute Kidney Injury V: Interprofessional Care01:20

    Acute Kidney Injury V: Interprofessional Care

    Acute Kidney Injury (AKI) requires a collaborative healthcare approach to restore renal function and prevent complications. Essential management strategies involve monitoring fluid and electrolyte balance, adjusting medications, initiating dialysis when necessary, and providing nutritional support.Fluid and Electrolyte ManagementFluid Monitoring: Regularly monitoring body weight, central venous pressure, and urine output helps detect fluid imbalances early. Patient intake and output are...