Diagnostic Value of Proenkephalin A 119 – 159 Serum in Early Detection of Sepsis Associated Acute Kidney Injury
Abstract
Background: Sepsis asscociated acute kidney injury (SA-AKI) is common condition that found in sepsis. Due to the lack of creatinine serum, this condition possibly makes therapy delayed. Proenkephalin A 119-159 (PENK) is a breakdown product of the prohormone proenkephalin A which freely filtered at the glomerulus. In other hand, this prohormone and its receptor predominantly expressed in proximal Tubular Epythelial Cells (pTEC) of kidney. Elevated serum PENK levels are an indicator of AKI. However, previous studies have shown varies results.
Objectives: This study aims to determine early detection biomarkers for the presence of AKI in sepsis.
Methods: This diagnostic test was conducted at Dr. M. Djamil General Hospital Padang in sepsis patients. The diagnosis of AKI was established based on the 2012 KDIGO criteria.
Results: The study involved 98 sepsis patients, 58.16% (n=57) of them experienced AKI. Serum creatinine levels at admission and within 48 hours of hospitalization were 1.0 (IQR 0.8–1.5) mg/dl and 1.6 (IQR 0.9–2.1) mg/dl, respectively. A serum PENK level ≥82.6 pmol/L at admission had sensitivity of 98.6%, specificity of 95.1%, positive predictive value of 96.1%, negative predictive value of 97.5%, and accuracy of 96.9% in early detection of AKI in sepsis.
Conclusion: Serum PENK level has excellent diagnostic value in early detection of AKI in sepsis.
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References
2. Peeraporratana S, Caballero CLM, Gomez H, dan Kellum J A. Acute kidney injury from sepsis: current concepts, epidemiology, pathopysiology, prevention and treatment. Kidney Int. 2019;96(5):1083-99.
3. Coca S G, Singamala S, dan Parikh C R. Chronic kidney disease after acute kidney injury: a systemic review and meta-analysis. Kidney Int. 2012;81(5):442-8.
4. Zou C, Wang C, dan Lu L. Advances in the study of subclinical AKI biomarkers. Front. Physiol. 2022;13(8):1-15.
5. Moledina D G dan Parikh C R. Phenotyping of Acute Kidney Injury Beyond Serum Creatinine. Semin Neprhol. 2018;38 (1):-11.
6. Bhosale S J dan Kulkarni A P. Invited article: Biomarkers in acute kidney inury. Indian Journal Of Critical Care Medicine. 2020;10:1-4.
7. Liu C, Liu X, He Z, Zhang J, Tan X, Yang W et al Article : Proenkephalin a secreted by renal proximal tubules functions as a brake kidney regeneration. Nature Communication. 2023;14(7146):1-15.
8. Chen Y, He Y, Zhao S, He X, Xue D, Xia Y. Review: Hypoxic ischemic inflammation microRNAs and delta opioid receptors: hypoxia ischemia sensitive versus insensitive organs. Frontiers in Aging Neuroscience. 2022;14(5):1-15.
9. Rosenqvist M, Bronton K, Hartmann O, Bergmann A, Struck J, dan Melander O. Proenkephalin A 119-159 (penKid) a novel biomarker for acute kidney injury in sepsis: an observational study. BMC Emergency Medicine. 2019;19(75):1-10.
10. Kim H, Hur M, Lee S, Marino R, Magrini L et al. Proenkephalin, Neutrophil Gelatinase-Associated Lipocalin, and eGFR in patient with sepsis. Ann Lab Med. 2017;37:388-97.
11. Martin L, Martin C, Peine A, Imoohl M, Kersten A, Kramaan R et al. Implementation and one year evaluation of proenkephalin A in critical care. Int. J. Mol Sci. 2025;26:1 – 17.
12. Schulte J, Depret F, Hartmann O, Pickkers P, Laterre P F, Uhle F et al. Clinical perfomance of proenkephalin A 119 – 159 for early diagnosis of acute kidney injury in patients with sepsis or septic shock. 2024;10:1 – 26.
13. Ji B K, Xie Z N, Pu X H, Gao N, Ye J L, Han Y F. Proenkephalin A 119 – 159 as a biomarker for predicting sepsis associated acute kidney injury. Int Urol Nephrol. 2025;57(12):4279 – 85.
14. Hassan M, Arnob A S, Ahmed A H, Rahman S, Akbar A A G, Jabin P et al. Proenkephalin is an early biomarker to predict septic acute kidney injury among patients in intensive care unit. Arch Neprol Urol. 2021;4(2):71 – 83.
15. Schulz C A, Chrsitensson A, Ericson U, Almgren P, Hindy G, Nilsson P et al. High level of fasting plasma proenkephalin A predicts deterioration of kidney function and incidence of CKD. J Am Soc Nephrol. 2016;28(1):291 – 302.
16. Bullen A L, Katz R, Poursadrolah S, Short S A P, Long D L, Cheung K L C et al. Plasma proenkephalin A and incident chronic kidney disease and albuminuria in the Reasons for Geographic And Racial Difference in Stroke (REGARDS) cohort. BMC Nephrology. 2024;25(16):1 – 10.
17. Nilsson C, Christensson A, Nilsson P M, Melander O, Bennet L. Proenkephalin and its association with renal function in Middle Eastern immigrants and native Swedes. Scand. J. Clin. Lab. Invest. 2021;81(7):1 – 10.
18. Matsiras D, Ventoulis I, Verras C, Bistola V, Bezati S, Fyntanidou B et al. Proenkephalin 119 – 159 in heart failure from pathophysiology. J Clin Med. 2025;14(2657):1-26.
19. Emmens J E, Maaten J M, Veldhuisen D J, de Boer R A, Struck J, Bergmaan A et al. Proenkephalin, an opioid system surogate as a novel comprehensive renal marker in heart failure. Circ Heart Fail. 2019;12(5):1 – 13.
20. Ng L L, Squire I B, Jones D J L, Cao T H, Chan D C S, Sandhu J K et al. Proenkephalin, renal dysfunction and prognosis in patients with acute heart failure. J Am Coll Cardiol. 2017;69:56 – 69.
21. Verras C, Bezati S, Bistola V, Ventoulis I, Matsiras D, Tsiodras S et al. Point of care serum proenkephalin as an early predictor of mortality in patients presenting to the emergency departement with septic shock. Biomedicine. 2024;12(1004):1 – 17.
22. Frigyesi A, Bostroom L, Lengquist M, Johnson P, Lundberg OH, Spangfors M et al. Plasma proenkephalin A 119 – 159 in intensive care unit admission in a predictor of organ failure and 30 day mortality. ICMx. 2021;9(36):1 – 12.
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