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Assessment of microvascular involvement in lupus nephritis patients by retinal OCT-angiography and kidney biopsies

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11

 

  1. Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, Rome, Italy.
  2. Ophthalmology Unit, Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy.
  3. Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, Rome, Italy. sara.ferrigno16@gmail.com
  4. Ophthalmology Unit, Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy.
  5. Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, Rome, Italy.
  6. Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, Rome, Italy.
  7. Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, Rome, Italy.
  8. Ophthalmology Unit, Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy.
  9. Ophthalmology Unit, Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy.
  10. Rheumatology, Allergology and Clinical Immunology, Department of “Medicina dei Sistemi”, University of Rome Tor Vergata, Rome, Italy.
  11. Ophthalmology Unit, Department of Experimental Medicine and Surgery, University of Rome Tor Vergata, Rome, Italy.

CER15040
2023 Vol.41, N°3
PI 0581, PF 0588
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PMID: 35916306 [PubMed]

Received: 28/07/2021
Accepted : 02/05/2022
In Press: 28/07/2022
Published: 23/03/2023

Abstract

OBJECTIVES:
Ocular and renal microvascular damage in lupus nephritis (LN) share similar physiopathological pathways that have investigated using traditional fundus examination and high-resolution colour electroretinography. Optical coherence tomography angiography (OCTA) is a recent, non-invasive technique for imaging the microvasculature of retina and choroid. Aim of the study was to investigate through OCTA analysis the relationship between retinal microvascular alterations and renal functional and histologic features.
METHODS:
Systemic lupus erythematosus (SLE) patients with LN, SLE without renal involvement and healthy controls were recruited and accomplished an ophthalmological evaluation, including OCTA. SLE-LN patients underwent a rheumatological evaluation, including disease-related clinical and laboratory features collection and kidney biopsy examination.
RESULTS:
This cross-sectional study enrolled forty-six eyes of 23 LN patients, thirty-two eyes of 16 SLE patients and forty-two eyes of 21 controls. Thirteen SLE-LN patients (56.5%) displayed lupus retinopathy, 10 at moderate (77%) and 3 at severe stage (23%) by fundus oculi examination. Analysis of OCTA data showed with high/moderate accuracy a reduction of retinal capillary vessel density in both SLE and SLE-LN patients compared to controls in superficial and deep plexi. A reduction in fovea thickness and an increase in foveal avascular zone were also detected. OCTA data of LN patients correlated with LN duration, disease activity, kidney function and the presence of LN-vascular lesions at kidney biopsy.
CONCLUSIONS:
Our results suggest the role of OCTA in early detection of systemic vascular involvement in SLE-LN patients and related kidney functional-histological impairment.

DOI: https://doi.org/10.55563/clinexprheumatol/p1q482

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