[Role of apoptosis in the kidney after reperfusion]

Eva Toronyi1

  • 1Semmelweis Egyetem, Altalános Orvostudományi Kar Transzplantációs és Sebészeti Klinika Budapest Baross u. 23. 1082. toronyi@trans.sote.hu

Orvosi Hetilap
|February 9, 2008
PubMed
Abstract

Insights

Organ transplantation involves ischaemia-reperfusion injury. Researchers found that calcium channel blockers and (-)-deprenyl reduce tubular cell apoptosis, potentially improving transplanted kidney function.

Area of Science:

  • Nephrology
  • Transplant Surgery
  • Cell Biology

Context:

  • Organ transplantation is a major medical advancement.
  • Ischaemia-reperfusion injury significantly impacts organ function and survival.
  • Kidney transplantation serves as a model for studying ischaemia-reperfusion.

Purpose:

  • To investigate the prevention of ischaemia-reperfusion damage in kidney transplantation.
  • To understand the role of apoptosis in these processes.
  • To evaluate the efficacy of calcium antagonists and (-)-deprenyl in preventing apoptosis.

Summary:

  • Apoptosis was studied during human kidney transplantation.
  • Animal models analyzed apoptosis after ischemia.
  • Calcium channel blockers (verapamil, nifedipine, bepridil, fendiline) and (-)-deprenyl were administered.
  • Observations revealed necrotic, apoptotic, and proliferating renal tubular cells.
  • All tested agents reduced apoptosis in rat kidneys.

Impact:

  • Tubular cell apoptosis affects transplanted kidney function.
  • Reducing tubular cell apoptosis may enhance graft survival and function.
  • This research offers potential therapeutic targets for mitigating ischaemia-reperfusion injury.

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...
Apoptosis01:30

Apoptosis

Apoptosis is a combination of two Greek words, 'apo' and 'ptosis,' meaning separation and falling off, respectively. Hippocrates used this word to describe gangrene, which was caused due to bandaging of fractured bones. Apoptosis was distinguished from necrosis in 1970 when John Kerr reported observations of morphological changes occurring during apoptosis. During one experiment, he observed that the disruption of blood supply to the liver tissue resulted in a size reduction of the tissue.
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...
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...
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...