Related Experiment Video

Updated: Oct 4, 2026

Murine Kidney Transplant Technique
08:58

Murine Kidney Transplant Technique

Published on: October 20, 2015

Serum cystatin C-immunoglobulin high-molecular-weight complexes in kidney and liver transplant patients

J Hermida1, R Romero, J C Tutor

  • 1Laboratorio Central y Servicio de Nefrología, Hospital Clínico Universitario de Santiago de Compostela, Santiago de Compostela, Spain.

Kidney International
|September 29, 2001
PubMed

Insights

Serum cystatin C is a reliable marker for kidney function in transplant patients. Studies show no evidence of cystatin C-immunoglobulin complexes affecting its filtration, confirming its accuracy for glomerular filtration rate (GFR) assessment.

Area of Science:

  • Nephrology
  • Transplantation Immunology

Background:

  • Serum cystatin C's reliability in assessing glomerular filtration rate (GFR) in renal transplant patients has been questioned.
  • Concerns exist regarding impaired filtration of cystatin C complexed with immunoglobulins, potentially underestimating GFR.

Purpose of the Study:

  • To investigate the validity of serum cystatin C as a GFR marker in transplant recipients.
  • To determine if cystatin C-immunoglobulin complexes form and impact GFR assessment in these patients.

Main Methods:

  • Analyzed serum cystatin C and creatinine levels in kidney and liver transplant patients.
  • Measured residual cystatin C after polyethylene glycol (PEG) precipitation to detect macromolecular complexes.

Main Results:

  • Residual cystatin C levels were high (70-100%), indicating minimal formation of cystatin C-immunoglobulin complexes.
  • No significant correlation was found between residual cystatin C and postoperative time in kidney or liver transplant patients.

Conclusions:

  • High molecular weight cystatin C-immunoglobulin complexes do not appear to form in renal or liver transplant patients.
  • Serum cystatin C remains a reliable marker for GFR assessment in these patient populations.
Abstract

Related Concept Videos

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 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 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...
Serum Studies: Renal Function Tests01:24

Serum Studies: Renal Function Tests

Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.
Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of fluid...
Renal Corpuscle01:20

Renal Corpuscle

The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...