Related Experiment Video

Updated: Jun 16, 2026

Mouse Kidney Transplantation: Models of Allograft Rejection
16:15

Mouse Kidney Transplantation: Models of Allograft Rejection

Published on: October 11, 2014

Patterns of chronic injury in pediatric renal allografts

Allison B Dart1, Albrecht Schall, Ian W Gibson

  • 1Department of Pediatrics, University of Manitoba, Winnipeg, MB, Canada.

Transplantation
|February 11, 2010
PubMed

Insights

Pediatric kidney transplant recipients develop significant tubulointerstitial and microvascular injury within five years. Early intervention to reduce calcineurin inhibitor exposure is crucial for preventing long-term allograft damage.

Area of Science:

  • Nephrology
  • Pediatric Transplantation
  • Immunology

Background:

  • Pathophysiology of chronic renal allograft injury in pediatric recipients is not well understood.
  • Understanding injury evolution is critical for improving long-term graft survival.

Purpose of the Study:

  • To investigate the development and contributing factors of tubulointerstitial, vascular, and glomerular injury in pediatric renal allografts.
  • To identify key determinants associated with chronic allograft damage.

Main Methods:

  • Analysis of 240 pediatric protocol renal allograft biopsies within the first 5 years posttransplant.
  • Evaluation of tubulointerstitial, vascular, and glomerular injury markers.
  • Statistical analysis to determine associations between injury and clinical factors.

Main Results:

  • Chronic tubulointerstitial injury developed early (first 12 months), while vascular and glomerular damage increased later (25-36 months onwards).
  • Acute rejection, recipient body surface area, obesity, donor hypertension, and acute tubular necrosis were associated with specific injury types.
  • Antibody induction therapy protected against chronic interstitial and arteriolar hyalinosis progression.

Conclusions:

  • Pediatric renal allografts show significant tubulointerstitial and microvascular injury by 5 years posttransplant.
  • Donor hypertension, acute inflammation, hypoperfusion, obesity, and calcineurin inhibitor toxicity contribute to allograft damage.
  • Early reduction of calcineurin inhibitor exposure (before 2 years) may mitigate microvascular lesion progression.
Abstract

More Related Videos

A Rat Orthotopic Renal Transplantation Model for Renal Allograft Rejection06:59

A Rat Orthotopic Renal Transplantation Model for Renal Allograft Rejection

Published on: February 2, 2022

Related Concept Videos

Acute Kidney Injury III: Clinical Manifestations01:29

Acute Kidney Injury III: Clinical Manifestations

Acute Kidney Injury (AKI) progresses through distinct clinical phases: the oliguric, diuretic, and recovery phases, each marked by unique manifestations and challenges.Oliguric Phase:The oliguric phase is the initial stage of AKI, typically lasting 10 to 14 days. This phase is marked by a significant reduction in urine output, usually less than 400 mL per day, indicating decreased kidney function. Fluid retention is a prominent feature, leading to symptoms such as edema, hypertension, and...
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...
Kidney Transplant II: Surgical Procedure01:26

Kidney Transplant II: Surgical Procedure

Preoperative ManagementThe primary goals of preoperative management in kidney transplantation are to optimize the patient’s metabolic state and prepare them for surgery through diet adjustments, necessary dialysis, and tailored medical treatment. This phase also involves comprehensive infection screening and patient education about the surgical procedure and postoperative care to improve outcomes and adherence.Medical ManagementA comprehensive evaluation is required for both the living donor...
Kidney Transplant I: Introduction01:28

Kidney Transplant I: Introduction

A kidney transplant is a surgical approach that involves replacing a non-functioning kidney with a healthy one from a donor. This procedure is often a treatment option for end-stage renal disease (ESRD) patients. The method requires careful recipient selection, including evaluating various medical and psychosocial factors. These criteria vary between transplant centers but generally include assessments of the patient's overall health, adherence to medical recommendations, and lifestyle...
Kidney Transplant III: Nursing Management01:16

Kidney Transplant III: Nursing Management

Postoperative Nursing Management for Kidney Transplant PatientsPostoperative nursing management care includes monitoring the surgical site, encouraging early movement, and promoting lung health through breathing exercises. Nurses also administer prescribed medications like H2-blockers, such as famotidine, or proton pump inhibitors, like omeprazole, to help prevent gastrointestinal ulcers and bleeding. Fungal infections in the mouth and bladder can result from immunosuppressive and antibiotic...
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...