An Update on Diabetic Kidney Disease: Epidemiology, Diagnosis, Treatment

A Special Issue of Life (ISSN 2075-1729) belonging to the section "Medical Research".

Deadline for manuscript submissions: closed (30 April 2026) | Viewed by 7056

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Guest Editor
Department of Medicine, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
Interests: diabetic nephropathy; diabetic kidney disease
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Special Issue Information

Dear Colleagues,

Diabetes mellitus is becoming a global epidemic in all parts of the world, with a consequent increase in the complications of diabetes. Kidney disease occurs in 35–40% of all patients with diabetes and is the most common cause of end-stage kidney failure, often needing renal replacement therapy. While several advances have occurred in our understanding of its pathogenesis and even more impressive developments have taken place in the recent past relating to the management of diabetic kidney disease (DKD), there remain significant gaps in the etiopathogenesis of this condition and, hence, there is no optimal therapy to prevent its development or halt its progression. The role of uncontrolled hyperglycemia and systemic hypertension in the causation and progression of DKD is well established. Furthermore, the impact of activation of the renin–angiotensin–aldosterone system (RAAS) on the pathogenesis and progression is clearly evident by the therapeutic success of inhibitors of RAAS. Recently, we have witnessed an explosive growth in investigative reports on the various aspects of pathogenesis, biomarker development and exploration of genetic and epigenetic factors. Newer research methodologies such as NextGen sequencing and single-cell RNA studies, confocal microscopy and other advanced imaging technics have helped to identify novel disease mechanisms and new pathogenic pathways and expanded the clinical spectrum with the characterization of non-proteinuric variants. Specifically, the past decade was notable for several successful therapeutic randomized clinical trials involving SGLT-2 inhibitors, GLP-1 agonists and mineralocorticoid receptor blockers, which resulted in more therapeutic options to slow down DKD. The presentation of the various aforementioned developments in pathogenesis as well as novel therapeutic strategies in several state-of-the-art manuscripts is the primary focus of this Special Issue.

We encourage the submission of manuscripts that highlight the epidemiology of DKD and explore emerging therapeutic approaches including, but not limited to, the following general topics:

  • Epidemiology of diabetes mellitus and DKD demographics, incidence and prevalence;
  • Medial management of DKD;
    • RAAS inhibitors;
    • Recent clinical trials: SGLT-2 inhibitors, GLP-1 agonists; aldosterone receptor antagonists in DKD;
    • Dietary interventions for DKD;
    • Natural remedies and complimentary therapies;
  • Treatment options in diabetic ESRD: hemodialysis, peritoneal dialysis and home hemodialysis;
  • Organ transplantation in diabetic nephropathy.

For readers interested in the pathophysiological mechanisms of DKD, please visit the Special Issue, https://www.mdpi.com/journal/life/special_issues/SWJ22TX359.

Prof. Dr. Sharma Prabhakar
Guest Editor

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Keywords

  • diabetic kidney disease
  • epithelial–mesenchymal transition
  • renin–angiotensin–aldosterone system sodium glucose transporter 2
  • albuminuria

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Published Papers (4 papers)

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Research

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18 pages, 25557 KB  
Article
Combined Mesenchymal Stem Cells and Low-Energy Shock Wave Therapy Significantly Reduced Inflammation, Oxidative Stress and Preserved Podocytes in Diabetic Nephropathy
by Chang-Chun Hsiao, Hsien-Wei Hsiao, Yu-Hsuan Liu and Chien-Te Lee
Life 2026, 16(9), 1550; https://doi.org/10.3390/life16091550 - 16 Sep 2026
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Abstract
Diabetic nephropathy (DN) is among the leading microvascular complications of diabetes mellitus and a major cause of end-stage renal disease. Current treatments slow disease progression but do not restore lost podocytes. We tested whether Wharton’s jelly-derived mesenchymal stem cells (WJ-MSCs) combined with low-energy [...] Read more.
Diabetic nephropathy (DN) is among the leading microvascular complications of diabetes mellitus and a major cause of end-stage renal disease. Current treatments slow disease progression but do not restore lost podocytes. We tested whether Wharton’s jelly-derived mesenchymal stem cells (WJ-MSCs) combined with low-energy shock wave (SW) therapy could be a safe and effective therapy in a streptozotocin-induced rat model of DN. Diabetic rats received 107 WJ-MSCs together with SW (0.13 mJ/mm2, 200 shocks) once a week for five weeks. The combined regimen lowered urinary microalbumin and the albumin-to-creatinine ratio, attenuated glomerular hypertrophy, and reduced fibronectin and collagen I deposition. Podocyte markers (WT-1, synaptopodin, nephrin) recovered toward normal levels. WJ + SW therapy suppressed NF-κB and IL-6 while raising IL-4 and IL-10, lowered NOX4 expression, and increased the antioxidant enzyme HO-1. Renal macrophages also shifted from the pro-inflammatory M1 phenotype to the reparative M2 phenotype. Together, these findings indicate that combining WJ-MSCs with low-energy SW therapy acts on multiple pathogenic axes of DN and may offer a potential interventional strategy for this inescapable and progressive complication. Full article
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14 pages, 524 KB  
Article
Diabetic Kidney Disease: Evidence from Two Selected Cohorts of Patients from Low–Middle and High Income Countries
by Maria Mattiotti, Matteo Righini, Daniele Vetrano, Danilo Ribichini, Valentina Vicennati, Valeria Aiello, Ermanno Notaro, Paolo Belardi, Noemi Bazzanini, Katunzi Mutalemwa, Emmanuel Ndile, Rehema Itambu, Uberto Pagotto, Gaetano Azzimonti, Giuseppe Cianciolo, Irene Capelli and Gaetano La Manna
Life 2025, 15(9), 1429; https://doi.org/10.3390/life15091429 - 11 Sep 2025
Cited by 1 | Viewed by 1694
Abstract
Objectives: Diabetic kidney disease (DKD) is the leading cause of kidney failure worldwide. Different phenotypes of DKD are emerging, partially attributable to a better glycemic control, partially to concomitant risk factors for kidney disease. Diabetes belongs to Non-Communicable Diseases (NCDs), but poor data [...] Read more.
Objectives: Diabetic kidney disease (DKD) is the leading cause of kidney failure worldwide. Different phenotypes of DKD are emerging, partially attributable to a better glycemic control, partially to concomitant risk factors for kidney disease. Diabetes belongs to Non-Communicable Diseases (NCDs), but poor data about DKD in Low–Middle Income Countries are currently available. In the present paper we compare two cohorts of patients affected by DKD from Tanzania and from Italy. Study design: Retrospective observational study conducted by NCDs Clinic of Tosamaganga Regional Referral Hospital (Tanzania) and from the Multidisciplinary Diabetological-Nephrological Clinic of Bologna (Italy). Methods: Included patients’ data were analyzed for demographical features, diabetes complications, laboratory findings, and pharmacological therapy at the time of enrollment and after 6-month follow-up. Results: Tanzanian patients were younger (56.65 vs. 67.66 years, p < 0.001), with a higher prevalence of women (66.9% vs. 25.5%, p < 0.001), and showed lower level of BMI (26.39 vs. 30.18 kg/m2, p < 0.001). Worsened glycemic control could be observed in the Tanzanian cohort (HbA1c 83.71 vs. 56.92 mmol/mol, p < 0.001) and higher eGFR (70.13 ± 31.93 vs. 52.31 ± 23.37 mL/min, p < 0.001). A sharp reduction in albuminuria was observed in both cohorts with an increase in nephroprotective drugs and better glycemic control. Conclusions: Two phenotypes of diabetic patients have emerged from comparison between two cohorts. Tanzanian patients are mostly female, younger, and with a normal BMI, whereas Italian patients are mainly male, older, and affected by metabolic syndrome and vascular complications. Therapy implementation is associated with a delayed decline of eGFR and downgrading of albuminuria at 6-month follow-up. Full article
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Review

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48 pages, 1772 KB  
Review
Biomarkers in Diabetic Kidney Disease: Early Detection, Prognostic Assessment, and Integration with Multi-Omics Signatures
by Merita Rroji, Flaviu Bob, Lorenzo Lo Cicero, Andreja Figurek and Goce Spasovski
Life 2026, 16(7), 1164; https://doi.org/10.3390/life16071164 - 14 Jul 2026
Cited by 1 | Viewed by 1315
Abstract
Diabetic kidney disease (DKD) is a leading cause of chronic kidney disease and end-stage kidney disease worldwide, imposing a major clinical and economic burden. Conventional diagnostic markers, including albuminuria and estimated glomerular filtration rate (eGFR), have limited sensitivity and specificity for early disease [...] Read more.
Diabetic kidney disease (DKD) is a leading cause of chronic kidney disease and end-stage kidney disease worldwide, imposing a major clinical and economic burden. Conventional diagnostic markers, including albuminuria and estimated glomerular filtration rate (eGFR), have limited sensitivity and specificity for early disease detection and for accurately predicting progression. Increasing evidence suggests that DKD involves complex glomerular, tubular, inflammatory, fibrotic, and oxidative stress pathways that precede overt clinical manifestations. Consequently, considerable attention has focused on identifying novel noninvasive biomarkers, particularly urinary biomarkers, alongside selected circulating biomarkers and emerging multi-omics signatures. Proteins, peptides, extracellular vesicles, and RNA-based biomarkers have demonstrated promising diagnostic and prognostic potential for detecting early renal injury, improving risk stratification, and monitoring therapeutic response. This review summarizes recent advances in biomarker research for DKD, highlighting emerging molecular and omics-based signatures that may complement conventional markers in improving early detection, prognostic assessment, and disease phenotyping. While numerous biomarkers have shown promising associations with renal outcomes and disease progression, the majority remain investigational. Their translation into routine clinical practice will depend on rigorous external validation, standardized analytical methods, and demonstration of added value beyond established clinical measures. Full article
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13 pages, 1340 KB  
Review
Non-Proteinuric Diabetic Kidney Disease: A Comprehensive Review
by Piruthiviraj Natarajan, Fahmida Shaik, Arunita Chatterjee and Sharma S. Prabhakar
Life 2026, 16(4), 533; https://doi.org/10.3390/life16040533 - 24 Mar 2026
Cited by 4 | Viewed by 2950
Abstract
Diabetic kidney disease (DKD) persists as the leading cause of chronic kidney disease (CKD) and often leads to end-stage renal disease (ESRD). Worldwide, 30–50% of patients with diabetes are affected by DKD, while DKD contributes to about half of ESRD. Previously, DKD had [...] Read more.
Diabetic kidney disease (DKD) persists as the leading cause of chronic kidney disease (CKD) and often leads to end-stage renal disease (ESRD). Worldwide, 30–50% of patients with diabetes are affected by DKD, while DKD contributes to about half of ESRD. Previously, DKD had been defined based on overt proteinuria—that is, a urine albumin-to-creatinine ratio (UACR) above 300 mg/g—after a stage of microalbuminuria (UACR 30–300 mg/g). However, emerging data suggest that a significant number of patients develop renal functional decline without albuminuria, suggesting that DKD can occur in the absence of protein excretion. This phenotype of normoalbuminuric or non-proteinuric DKD (NA-DKD or NP-DKD) is emerging as an important clinical entity. It is characterized by a gradual decline in renal function, commonly with an annual reduction in estimated glomerular filtration rate (eGFR) > 3 mL/min/1.73 m2 or an eGFR < 60 mL/min/1.73 m2, while the UACR remains < 30 mg/g. Growing rates of NP-DKD expose limitations inherent in traditional models of DKD pathogenesis and underscore the need for diagnostic and therapeutic paradigms that are not reliant on albuminuria-only criteria. Here, we present a comprehensive review of the NP-DKD to guide a more inclusive model of DKD pathogenesis, its diagnosis, and therapy. Full article
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