Sex and the single transplanted kidney

Area of Science:

• Nephrology
• Transplantation Immunology
• Endocrinology

Background:

• Ischemia-reperfusion injury (IRI) affects 30-50% of deceased donor kidney transplants, leading to delayed graft function (DGF) or primary nonfunction.
• Previous research suggests sex-specific susceptibility to IRI in various organs, but human data in kidney transplantation is limited.

Purpose of the Study:

• To investigate the impact of donor and recipient sex on IRI and DGF in kidney transplantation.
• To elucidate the role of estrogen receptors in IRI using a murine model.

Main Methods:

• Analysis of a large cohort of 46,691 renal transplant patients from the United Network for Organ Sharing (UNOS) database.
• Utilized a murine model to explore the molecular mechanisms of sex-specific IRI, focusing on estrogen receptors.

Main Results:

• Human data analysis confirmed that sex significantly influences DGF outcomes in kidney transplant recipients.
• The study identified a role for estrogen receptors in mediating sex-specific IRI in a murine model.

Conclusions:

• Donor and recipient sex are critical determinants of kidney transplant outcomes, particularly regarding IRI and DGF.
• Targeting sex-specific molecular pathways presents a promising strategy to enhance organ availability and mitigate IRI in transplantation.