Society of Diabetic Nephropathy Prevention Journal of Nephropathology 2251-8363 9 4 2020 10 01 The relationship between urinary and plasma levels of tumor necrosis factor alpha and various stages of chronic kidney disease in patients with type II diabetes mellitus e39 e39 10.34172/jnp.2020.39 EN Alireza Soleimani Maryam Soleimani Forouz Farzadnejad https://orcid.org/0000-0003-0549-5519 Mohammadreza Tamadon https://orcid.org/0000-0002-5436-9626 Journal Article 10.34172/jnp.2020.39 2019 09 21 2019 10 30 Introduction: The concept of diabetic nephropathy, as a metabolic disease, is now being replaced by chronic low-grade inflammatory disease. Tumor necrosis factor alpha (TNF-α) is a proinflammatory cytokine that plays an important role in the pathogenesis and clinical outcomes of diabetic nephropathy. Objectives: This study aimed to determine the relationship between plasma and urinary levels of TNF-α and chronic kidney disease (CKD) in patients with type 2 diabetes mellitus. Patients and Methods: In this descriptive-analytical study, patients with type 2 diabetes mellitus who referred to the endocrine clinic in Kashan (2016) were enrolled in the study and their clinical and laboratory data were recorded. Albumin/creatinine ratio (ACR) and glomerular filtration rate (GFR) were calculated. The patients were divided into three groups based on their GFR. Serum and urinary levels of TNF-α were determined by ELISA and were compared between the studied groups. Results: A total of 128 patients were evaluated. Of all, 35 patients (27.3%), 39 patients (30.4%), and 54 patients (42.3%), respectively, were suffering from stage 1, stage 2, and stage 3 CKD. The plasma levels of TNF-α in patients with stage 1, 2, and 3 CKD, were 66.20 ± 33.27 pg/mL, 67.47 ± 42.98 pg/mL, and 77.32 ± 47.23 pg/mL respectively, since the difference among them was not significant (P= 0.417). In addition, the urinary levels of TNF-α in patients with stage 1, 2, and 3 CKD, respectively, were 88.18 ± 26.66 pg/mL, 97.41 ± 57.76 pg/mL, and 101.18 ± 60.47 pg/mL, since no significant difference was observed between the three groups (P=0.957). Conclusion: Based on the results of this study, with changing the stage of CKD, the serum and urinary levels of the TNF-α increases too, although this increase is not significant. Moreover, the plasma and urinary levels of the TNF-α have a direct and significant relationship with each other. It is recommended to conduct further studies in this field.