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Updated: Jul 9, 2026
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Glomerular Outgrowth as an Ex Vivo Assay to Analyze Pathways Involved in Parietal Epithelial Cell Activation
Published on: August 19, 2020
Interstitial and glomerular renal involvement in sarcoidosis
Hayet Kaaroud1, Lilia Ben Fatma, Soumaya Beji
1Department of Internal Medicine and Nephrology, Charles Nicolle Hospital, Tunis, Tunisia. hayet.kaarout@rns.tn
Summary
Sarcoidosis can cause chronic kidney disease (CKD), particularly tubulo-interstitial nephritis (TIN). Corticosteroid treatment showed effectiveness in improving renal function for many patients with sarcoidosis-related kidney issues.
Area of Science:
- Nephrology
- Immunology
- Systemic Diseases
Background:
- Sarcoidosis is a systemic granulomatous disease.
- Renal involvement in sarcoidosis is uncommon, with chronic kidney disease (CKD) affecting less than 1% of patients.
- Tubulo-interstitial nephritis (TIN) is the most frequent renal manifestation, occurring in 7-27% of sarcoidosis cases.
Purpose of the Study:
- To investigate the clinical characteristics, renal involvement, and treatment outcomes in patients with sarcoidosis-related kidney disease.
- To evaluate the efficacy of corticosteroid therapy in managing renal manifestations of sarcoidosis.
Main Methods:
- Retrospective study of 15 patients diagnosed with sarcoidosis-related renal disease between 1975 and 2006.
- Analysis of patient demographics, clinical presentation, renal biopsy findings, treatment regimens, and patient outcomes.
- Follow-up data collected for a mean period of 25 months.
Main Results:
- The study included 13 females and 2 males with a mean age of 56.5 years.
- CKD was present in 93.3% of patients, with proteinuria in 96.6%.
- Renal biopsies revealed TIN in 10 patients, while 2 patients had glomerulonephritis (GN). Corticosteroid therapy was administered to 80% of patients, showing favorable outcomes in 46.6% who improved renal function.
Conclusions:
- Corticosteroid treatment is effective for TIN in sarcoidosis patients.
- Sarcoidosis can lead to significant renal failure, highlighting its importance as a nephrological condition.
- Early diagnosis and treatment are crucial for managing kidney involvement in sarcoidosis.
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