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  • Carbonic anhydrase 3...

Carbonic anhydrase 3 protein in urine may be Potential Biomarker for ARAS: Study

Written By : Dr. Shravani Dali Published On 2025-10-10T20:15:20+05:30  |  Updated On 10 Oct 2025 8:15 PM IST
Carbonic anhydrase 3 protein in urine may be Potential Biomarker for ARAS: Study
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A new study published in BMC Nephrology in 2025, reports that carbonic anhydrase 3 detected in urine may serve as a useful biomarker for monitoring renal injury in patients with atherosclerotic renal artery stenosis. The authors explain that this vascular condition reduces blood supply to the kidneys, leading to progressive functional decline, yet current diagnostic methods rely heavily on imaging and invasive procedures. Identifying a protein such as carbonic anhydrase 3 in urine, which reflects interstitial damage, could provide a safe and non-invasive alternative to monitor disease progression and treatment response.

The researchers applied proteomic screening to identify candidate proteins and then validated carbonic anhydrase 3 as the most promising urinary signal. They found that levels of this protein, normalized to creatinine, were consistently elevated in patients with renal artery stenosis compared to disease and healthy controls. Because urine collection is simple, inexpensive, and non-invasive, this approach could potentially allow earlier identification of renal damage and closer tracking of patient outcomes. However, the authors stress that their findings need confirmation through larger trials and more detailed mechanistic work to establish specificity and clinical reliability.

This work adds to the growing field of urinary proteomics, where molecular signals are being explored as tools for early detection of cardiovascular and renal disease. By pointing to carbonic anhydrase 3 as a marker of ischemic kidney injury, the study opens new possibilities for patient-friendly diagnostics. Still, the translation of these findings into practice will depend on whether future studies can show that urinary carbonic anhydrase 3 not only reflects existing injury but also predicts progression or response to intervention.

Reference:
Li X, Liu N, Liu T, Liang G, Shao C, Ma T, Zhang M. The carbonic anhydrase 3 protein in urine: a potential biomarker to monitor atherosclerotic renal artery stenosis. BMC Nephrology. 2025;26:530. doi:10.1186/s12882-025-04457-w

Keywords: Carbonic anhydrase 3, urine biomarker, renal interstitial injury, atherosclerotic renal artery stenosis, Xiufeng Li, BMC Nephrology



Carbonic anhydrase 3urine biomarkerrenal interstitial injuryatherosclerotic renal artery stenosisBMC Nephrology
Source : BMC Nephrology
Dr. Shravani Dali
Dr. Shravani Dali

    Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.

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