Vitamin D might reduce risk of nephropathy in diabetes patients

Written By :  Dr. Shravani Dali
Medically Reviewed By :  Dr. Kamal Kant Kohli
Published On 2023-06-30 14:30 GMT   |   Update On 2023-07-01 12:04 GMT
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Vitamin D is associated with reduced risk of diabetic nephropathy in diabetics suggests a new study published in the BMC Nephrology. However, whether this association is causative is uncertain.

Diabetic nephropathy (DN) is the leading cause of end-stage renal disease (ESRD) and is associated with a high risk of cardiovascular disease. Proteinuria, hypertension, and gradual declines in kidney function are the clinical manifestations

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The researchers used two-sample Mendelian randomization to examine the causal influence of vitamin D on diabetic nephropathy in 7,751 individuals with type I diabetes-related nephropathy (T1DN) and 9,933 individuals with type II diabetes-related nephropathy (T2DN). Meanwhile, we repeated some previous studies on the influence of KIM-1 (kidney injury molecule 1) and body mass index (BMI) on DN. Additionally, to test the validity of the instruments variable for vitamin D, we conducted two negative controls Mendelian randomization (MR) on breast and prostate cancer, and a positive control MR on multiple sclerosis.

Results

Results of the MR analysis showed that there was no causal association between 25(OH)D with the early/later stage of T1DN (early: OR = 0.903, 95%CI: 0.229 to 3.555; later: OR = 1.213, 95%CI: 0.367 to 4.010) and T2DN (early: OR = 0.588, 95%CI: 0.182 to 1.904; later: OR = 0.904, 95%CI: 0.376 to 2.173), nor with the kidney function of patients with diabetes mellitus: eGFRcyea (creatinine-based estimated GFR) (Beta = 0.007, 95%CI: -0.355 to 0.369)) or UACR (urinary albumin creatinine ratio) (Beta = 0.186, 95%CI: -0.961 to 1.333)).

The researchers found no evidence that Vitamin D was causally associated with DN or kidney function in diabetic patients.
Reference:

He, M., Yang, T., Zhou, P. et al. A Mendelian randomization study on causal effects of 25(OH) vitamin D levels on diabetic nephropathy. BMC Nephrol 24, 192 (2023). https://doi.org/10.1186/s12882-023-03186-2


Keywords:

He, M., Yang, T., Zhou, P, Mendelian, randomization, study, causal, effects, 25(OH), vitamin, D, levels, diabetic, nephropathy, BMC Nephrology


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Article Source : BMC Nephrology

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