{"id":10963,"date":"2026-04-13T04:46:25","date_gmt":"2026-04-13T04:46:25","guid":{"rendered":"https:\/\/www.kauveryhospital.com\/ima-journal\/?p=10963"},"modified":"2026-04-13T05:03:08","modified_gmt":"2026-04-13T05:03:08","slug":"diabetic-kidney-disease-dkd-from-pathology-to-precision-care","status":"publish","type":"post","link":"https:\/\/www.kauveryhospital.com\/ima-journal\/ima-journal-april-2026\/diabetic-kidney-disease-dkd-from-pathology-to-precision-care\/","title":{"rendered":"Diabetic Kidney Disease (DKD) &#8211; From pathology to Precision care"},"content":{"rendered":"<p class=\"caps\">[vc_section][vc_row][vc_column][vc_column_text]Diabetic kidney disease (DKD) is the leading cause of chronic kidney disease (CKD) and end-stage kidney disease worldwide, affecting nearly 30\u201340% of patients with diabetes mellitus. The term <strong>DKD is broader than \u201cdiabetic nephropathy (DN)\u201d<\/strong>: DN refers specifically to the classic histopathologic lesion complex attributable to diabetes on renal biopsy, whereas DKD includes any chronic kidney disease occurring in a diabetic patient, whether or not biopsy-proven classical diabetic lesions are present. This distinction is increasingly important because many diabetic patients have reduced eGFR without albuminuria, mixed lesions, or superimposed non-diabetic kidney disease (NDKD).<\/p>\n<h2>Clinical Presentation<\/h2>\n<p>DKD classically evolves through:<\/p>\n<ol class=\"decimal\">\n<li>Hyperfiltration phase (early increased GFR)<\/li>\n<li>Microalbuminuria (UACR 30\u2013300 mg\/g)<\/li>\n<li>Macroalbuminuria (&gt;300 mg\/g)<\/li>\n<li>Progressive GFR decline<\/li>\n<li>ESRD<\/li>\n<\/ol>\n<p>However, modern phenotypes are heterogeneous:<\/p>\n<h3>A. Classical Albuminuric DKD<\/h3>\n<ul class=\"list\">\n<li>Persistent albuminuria<\/li>\n<li>Progressive eGFR decline<\/li>\n<li>Often associated with diabetic retinopathy<\/li>\n<\/ul>\n<h3>B. Non-Albuminuric DKD<\/h3>\n<ul class=\"list\">\n<li>Declining eGFR with normoalbuminuria<\/li>\n<li>More common in elderly T2DM, women, hypertensive patients<\/li>\n<li>Often associated with vascular\/interstitial lesions rather than overt glomerulopathy<\/li>\n<\/ul>\n<h2>Clinical Clues Suggesting NDKD Rather than Pure DKD<\/h2>\n<ul class=\"list\">\n<li>Sudden nephrotic syndrome<\/li>\n<li>Rapid creatinine rise<\/li>\n<li>Active urine sediment<\/li>\n<li>Absence of retinopathy<\/li>\n<li>Short diabetes duration (&lt;5 years in T1DM)<\/li>\n<\/ul>\n<h2>Diabetic Nephropathy vs Diabetic Kidney Disease<\/h2>\n<table class=\"table-responsive\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td width=\"208\"><strong>Feature<\/strong><\/td>\n<td width=\"208\"><strong>Diabetic Nephropathy (DN)<\/strong><\/td>\n<td width=\"208\"><strong>Diabetic Kidney Disease (DKD)<\/strong><\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Definition<\/td>\n<td width=\"208\">Histopathologic diagnosis<\/td>\n<td width=\"208\">Clinical syndrome<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Requires biopsy?<\/td>\n<td width=\"208\">Yes<\/td>\n<td width=\"208\">No<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">Scope<\/td>\n<td width=\"208\">Classical diabetic lesions only<\/td>\n<td width=\"208\">Includes all CKD in diabetes<\/td>\n<\/tr>\n<tr>\n<td width=\"208\">May include NDKD?<\/td>\n<td width=\"208\">No<\/td>\n<td width=\"208\">Yes<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Thus, DN is a subset of DKD.<\/p>\n<h2>Histopathology of Diabetic Nephropathy<\/h2>\n<p>Renal biopsy is not routine but indicated when atypical features exist.<\/p>\n<h2>Classic Histologic Features (RPS Classification)<\/h2>\n<h2>Glomerular Lesions:<\/h2>\n<ol class=\"decimal\">\n<li>GBM thickening (earliest lesion)<\/li>\n<li>Diffuse mesangial expansion<\/li>\n<li>Nodular sclerosis (Kimmelstiel\u2013Wilson nodules)<\/li>\n<li>Mesangiolysis<\/li>\n<li>Capillary microaneurysms<\/li>\n<li>Global glomerulosclerosis in advanced disease<\/li>\n<\/ol>\n<h3>Tubulointerstitial Lesions:<\/h3>\n<ul class=\"list\">\n<li>Tubular basement membrane thickening<\/li>\n<li>Interstitial fibrosis\/tubular atrophy (IFTA)<\/li>\n<li>Tubular atrophy<\/li>\n<\/ul>\n<h3>Vascular Lesions:<\/h3>\n<ul class=\"list\">\n<li>Hyaline arteriolosclerosis (afferent + efferent arteriole hallmark)<\/li>\n<li>Arteriosclerosis<\/li>\n<\/ul>\n<h2>Patchy vs Diffuse Nature<\/h2>\n<p>A key diagnostic nuance: diabetic lesions may be <strong>patchy and heterogeneous<\/strong>, especially early in T2DM. Nodular lesions may involve only some glomeruli, while adjacent glomeruli may show only mild mesangial expansion. Hence biopsy sampling error can underestimate severity.<\/p>\n<p>Emerging pathology studies using deep-learning morphometry show subtle early glomerular tuft contraction and peripheral capillary alterations even before overt nodular sclerosis develops.<\/p>\n<figure style=\"text-align: center; margin-bottom: 20px;\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-10968\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2026\/04\/patchy-and-heterogeneous.jpg\" alt=\"\" width=\"700\" height=\"601\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2026\/04\/patchy-and-heterogeneous.jpg 700w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2026\/04\/patchy-and-heterogeneous-300x258.jpg 300w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/figure>\n<h2>Clinical Diagnosis of DKD<\/h2>\n<p>Diagnosis is usually clinical and based on:<\/p>\n<h2>Essential Criteria:<\/h2>\n<ul class=\"list\">\n<li>Diabetes mellitus<\/li>\n<li>Persistent albuminuria (&gt;3 months)<\/li>\n<li>Reduced eGFR (&lt;60 ml\/min\/1.73 m\u00b2)<\/li>\n<li>Exclusion of alternate causes<\/li>\n<\/ul>\n<h2>Supporting Clues:<\/h2>\n<ul class=\"list\">\n<li>Diabetic retinopathy<\/li>\n<li>Long-standing diabetes<\/li>\n<li>Bland urine sediment<\/li>\n<li>Gradual progression<\/li>\n<\/ul>\n<h2>Recommended Evaluation:<\/h2>\n<ul class=\"list\">\n<li>UACR annually<\/li>\n<li>Serum creatinine\/eGFR<\/li>\n<li>BP monitoring<\/li>\n<li>Retinal exam<\/li>\n<li>Potassium monitoring if RAAS blockade used<\/li>\n<\/ul>\n<p>KDIGO recommends CKD staging using both eGFR and albuminuria grids.<\/p>\n<h2>Management: Current Evidence-Based Approach<\/h2>\n<h3>A. Glycemic Optimization<\/h3>\n<ul class=\"list\">\n<li>HbA1c target individualized: usually ~7%<\/li>\n<li>Avoid overt hypoglycemia in advanced CKD<\/li>\n<\/ul>\n<h3>B. RAAS Blockade<\/h3>\n<ul class=\"list\">\n<li>ACE inhibitors \/ ARBs first-line in albuminuric DKD<\/li>\n<li>Reduce intraglomerular pressure and proteinuria<\/li>\n<\/ul>\n<h3>C. SGLT2 Inhibitors (Foundation Therapy)<\/h3>\n<p>Strong renal protective evidence:<\/p>\n<ul class=\"list\">\n<li>Empagliflozin<\/li>\n<li>Dapagliflozin<\/li>\n<li>Canagliflozin<\/li>\n<\/ul>\n<p>Benefits:<\/p>\n<ul class=\"list\">\n<li>Slows eGFR decline<\/li>\n<li>Reduces albuminuria<\/li>\n<li>Lowers HF hospitalization<\/li>\n<\/ul>\n<h3>D. Nonsteroidal Mineralocorticoid Receptor Antagonist<\/h3>\n<p><strong>Finerenone<\/strong><\/p>\n<ul class=\"list\">\n<li>Proven benefit in persistent albuminuric DKD despite RAAS blockade<\/li>\n<\/ul>\n<h3>E. GLP-1 Receptor Agonists<\/h3>\n<p>Useful when:<\/p>\n<ul class=\"list\">\n<li>Additional glycemic control needed<\/li>\n<li>CV risk high<\/li>\n<\/ul>\n<h3>F. Blood Pressure Target<\/h3>\n<ul class=\"list\">\n<li>Aim &lt;130\/80 mmHg if tolerated<\/li>\n<\/ul>\n<h3>G. Lipid Management<\/h3>\n<ul class=\"list\">\n<li>Statins for cardiovascular protection<\/li>\n<\/ul>\n<h3>H. Dietary Measures<\/h3>\n<ul class=\"list\">\n<li>Sodium &lt;2 g\/day<\/li>\n<li>Protein ~0.8 g\/kg\/day in non-dialysis CKD<\/li>\n<\/ul>\n<h3>I. When to Biopsy<\/h3>\n<p>Consider biopsy if:<\/p>\n<ul class=\"list\">\n<li>Hematuria<\/li>\n<li>Rapid renal decline<\/li>\n<li>Nephrotic syndrome<\/li>\n<li>No retinopathy + atypical course<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3><strong>Future Directions<\/strong><\/h3>\n<p>Novel targets under study:<\/p>\n<ul class=\"list\">\n<li>Endothelin receptor antagonists<\/li>\n<li>Anti-inflammatory\/fibrotic agents<\/li>\n<li>HIF pathway modulation<\/li>\n<li>Epigenetic therapeutics<\/li>\n<\/ul>\n<p>Precision phenotyping may soon separate inflammatory, fibrotic, vascular, and metabolic DKD endotypes for individualized treatment.<\/p>\n<h3>References:<\/h3>\n<ol class=\"decimal\">\n<li>Wang N, Zhang C. <em>Recent Advances in the Management of Diabetic Kidney Disease<\/em>. Int J Mol Sci. 2024.<\/li>\n<li>Correa-Rotter R et al. <em>New and Emerging Therapies for DKD<\/em>. Nat Rev Nephrol. 2024.<\/li>\n<li>Zhang H et al. <em>Diabetic Kidney Disease: Current Evidence and Future Directions<\/em>. Front Med. 2025.<\/li>\n<li>Mende C, Bloomgarden Z. <em>Diabetic Kidney Disease Update<\/em>. J Diabetes. 2025.<\/li>\n<li>KDIGO Diabetes in CKD Guideline Update Portal, 2026 draft update.<\/li>\n<\/ol>\n<div class=\"row\" style=\"padding-top: 30px;\">\n<div class=\"col-md-2 col-sm-4 col-xs-4 paddingbottom\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-7367\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/Dr-Rashmi-1.jpg\" alt=\"Dr Rashmi Shivram\" width=\"300\" height=\"306\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/Dr-Rashmi-1.jpg 300w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2023\/09\/Dr-Rashmi-1-294x300.jpg 294w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/div>\n<div class=\"col-md-10 col-sm-8 col-xs-8 paddingbottom\">\n<p style=\"font-size: 15px;\" align=\"left\"><b>Dr Rashmi Shivram<br \/>\nAssociate Consultant &#8211; Dept of Nephrology<br \/>\n<a href=\"https:\/\/www.kauveryhospital.com\/\">Kauvery Hospital, Chennai.<\/a><\/b><\/p>\n<\/div>\n<\/div>\n<div class=\"row\" style=\"padding-top: 30px;\">\n<div class=\"col-md-2 col-sm-4 col-xs-4 paddingbottom\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-10225\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2025\/05\/person-placeholder-female.jpg\" alt=\"\" width=\"700\" height=\"700\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2025\/05\/person-placeholder-female.jpg 700w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2025\/05\/person-placeholder-female-300x300.jpg 300w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2025\/05\/person-placeholder-female-150x150.jpg 150w\" sizes=\"auto, (max-width: 700px) 100vw, 700px\" \/><\/div>\n<div class=\"col-md-10 col-sm-8 col-xs-8 paddingbottom\">\n<p style=\"font-size: 15px;\" align=\"left\"><b>Dr Sanghamitra<br \/>\nConsultant Pathologist<br \/>\n<a href=\"https:\/\/www.kauveryhospital.com\/\">Kauvery Hospital, Chennai.<\/a><\/b><\/p>\n<\/div>\n<\/div>\n<div class=\"row\" style=\"padding-top: 30px;\">\n<div class=\"col-md-2 col-sm-4 col-xs-4 paddingbottom\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-10866\" src=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2026\/02\/Dr-Balasubramaniam.jpg\" alt=\"\" width=\"400\" height=\"469\" srcset=\"https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2026\/02\/Dr-Balasubramaniam.jpg 400w, https:\/\/www.kauveryhospital.com\/ima-journal\/wp-content\/uploads\/2026\/02\/Dr-Balasubramaniam-256x300.jpg 256w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/div>\n<div class=\"col-md-10 col-sm-8 col-xs-8 paddingbottom\">\n<p style=\"font-size: 15px;\" align=\"left\"><b>Dr. R. Balasubramaniyam<br \/>\nChief Nephrologist<br \/>\n<a href=\"https:\/\/www.kauveryhospital.com\/\">Kauvery Hospital, Chennai.<\/a><\/b><\/p>\n<\/div>\n<\/div>\n<p>[\/vc_column_text][\/vc_column][\/vc_row][\/vc_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[vc_section][vc_row][vc_column][vc_column_text]Diabetic kidney disease (DKD) is the leading cause of chronic kidney disease (CKD) and end-stage kidney disease worldwide, affecting nearly 30\u201340% of patients with diabetes mellitus. The term DKD is<\/p>\n","protected":false},"author":2,"featured_media":10970,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[99],"tags":[],"class_list":["post-10963","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ima-journal-april-2026"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Diabetic Kidney Disease (DKD) - From pathology to Precision care<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kauveryhospital.com\/ima-journal\/ima-journal-april-2026\/diabetic-kidney-disease-dkd-from-pathology-to-precision-care\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Diabetic Kidney Disease (DKD) - From pathology to Precision care\" \/>\n<meta property=\"og:description\" content=\"[vc_section][vc_row][vc_column][vc_column_text]Diabetic kidney disease (DKD) is the leading cause of chronic kidney disease (CKD) and end-stage kidney disease worldwide, affecting nearly 30\u201340% of patients with diabetes mellitus. 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