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Updated: Jun 19, 2026

Mouse Kidney Transplantation: Models of Allograft Rejection
Published on: October 11, 2014
Multidrug resistance-associated protein 2 gene (ABCC2) variant in kidney allograft recipients
1Department of Nephrology and Transplantation Medicine, Transplantation Institute, Medical University of Warsaw, Nowogrodzka 59, 02-006 Warsaw, Poland. jpazik@poczta.fm
Abstract:
Multidrug resistance-associated proteins may play crucial roles in the protection of internal organs, particularly the kidneys and liver, from various toxic agents. Little is known about their significance in transplanted organ function and survival. The aim of the present study was to evaluate the frequency of functional ABCC2 4544A>G polymorphism in 165 renal transplant recipients. DNA was isolated from peripheral blood and ABCC2 4544A>G polymorphism was assessed by the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Analysis of allele and genotype frequencies revealed that the presence of ABCC2 4544 A allele was associated with prolonged observation time and may have an impact on a greater frequency of proteinuria. This observation strongly suggested that particular alleles of the ABCC2 gene may contribute to transplantation outcomes.
Insights
The ABCC2 4544A>G polymorphism in renal transplant recipients may impact outcomes. The A allele was linked to longer observation times and increased proteinuria risk, suggesting a role in transplantation success.
Area of Science:
- Pharmacogenomics
- Transplantation immunology
- Renal medicine
Background:
- Multidrug resistance-associated proteins (MRPs) are vital for protecting organs like kidneys and liver from toxins.
- The role of MRPs, specifically the ABCC2 gene, in transplanted organ function and survival remains largely unexplored.
- Understanding genetic variations in MRPs is crucial for optimizing transplant outcomes.
Purpose of the Study:
- To investigate the frequency of the functional ABCC2 4544A>G polymorphism in 165 renal transplant recipients.
- To determine the association between ABCC2 4544A>G genotypes and clinical outcomes in kidney transplant patients.
- To explore the potential impact of this polymorphism on graft survival and complications like proteinuria.
Main Methods:
- DNA was extracted from the peripheral blood of 165 renal transplant recipients.
- The ABCC2 4544A>G polymorphism was genotyped using the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) technique.
- Allele and genotype frequencies were analyzed in relation to clinical data.
Main Results:
- The study evaluated the allele and genotype frequencies of the ABCC2 4544A>G polymorphism.
- The presence of the ABCC2 4544 A allele was associated with a prolonged observation period post-transplantation.
- A correlation was found between the ABCC2 4544 A allele and a higher incidence of proteinuria.
Conclusions:
- Specific alleles of the ABCC2 gene, including the 4544 A allele, may influence the outcomes of renal transplantation.
- The ABCC2 4544A>G polymorphism could serve as a predictive marker for complications such as proteinuria in kidney transplant recipients.
- Further research is warranted to elucidate the precise mechanisms by which ABCC2 variants affect long-term graft function and survival.
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