Microvascular Disease After Renal Transplantation

Area of Science:

• Nephrology
• Ophthalmology
• Vascular Biology

Background:

• End-stage kidney disease (CKD5) confers a high risk of vascular events.
• This risk persists even after successful renal transplantation.
• Microvascular disease is a key contributor to vascular complications.

Purpose of the Study:

• To compare the prevalence and severity of microvascular disease in renal transplant recipients versus patients with CKD5.
• To assess retinal microvascular changes in these two patient groups.

Main Methods:

• Retinal photography was performed on 92 transplant recipients and 70 CKD5 patients.
• Images were analyzed for hypertensive/microvascular retinopathy using the Wong and Mitchell classification.
• Vessel caliber was measured using a computer-assisted method.

Main Results:

• No significant difference in moderate-severe retinopathy prevalence between transplant recipients (50%) and CKD5 patients (54%).
• Mean arteriole and venular calibers were similar between the two groups.
• Vessel caliber remained unchanged before and after transplantation in a subset of patients.

Conclusions:

• Hypertensive/microvascular disease is equally prevalent and severe in transplant recipients and CKD5 patients.
• Microvascular disease may be a significant factor contributing to cardiac events post-renal transplantation.