Abstract Title:

Vitamin B complex supplementation as a homocysteine-lowering therapy for early stage diabetic nephropathy in pediatric patients with type 1 diabetes: A randomized controlled trial.

Abstract Source:

Clin Nutr. 2019 Jan 17. Epub 2019 Jan 17. PMID: 30704890

Abstract Author(s):

Nancy Samir Elbarbary, Eman Abdel Rahman Ismail, Mamdouh Ahmed Zaki, Yasser Wagih Darwish, Marwa Zaki Ibrahim, Manal El-Hamamsy

Article Affiliation:

Nancy Samir Elbarbary


BACKGROUND: Homocysteine levels are elevated in patients with type 1 diabetes mellitus (T1DM) and could induce renal injury. B vitamins have an important role in preventing microvascular complications of diabetes.

AIM: We performed a randomized-controlled trial of oral supplementation with vitamin B complex as an adjuvant therapy for nephropathy in pediatric T1DM patients and assessed its relation to homocysteine and cystatin C as a marker of nephropathy.

METHODS: This trial included 80 T1DM patients with microalbuminuria, despite oral angiotensin-converting enzyme inhibitors, aged 12-18 years with at least 5 years disease duration and HbA1c≤8.5%. Patients were randomly assigned into two groups; intervention group which received oral vitamin B complex (B1, B6 and B12) once daily and placebo group. Both groups were followed-up for 12 weeks with assessment of plasma homocysteine, HbA1c, urinary albumin excretion (UAE) and cystatin C.

RESULTS: Both groups were well-matched in baseline clinical and laboratory parameters. Baseline homocysteine levels were elevated in both groups compared with reference control values. After 12 weeks, supplementation with vitamin B complex for the intervention group resulted in a significant decrease of homocysteine, fasting blood glucose, HbA1c, triglycerides, total cholesterol, UAE and cystatin C compared with baseline levels (p < 0.001) and with placebo group (p < 0.001). No adverse reactions were reported. Baseline cystatin C was negatively correlated to vitamin B12 (r = -0.77, p = 0.001).

CONCLUSIONS: Vitamin B complex improved glycemic control and renal function through decreasing homocysteine and could be a safe and effective strategy for treatment of early stage nephropathy in pediatric T1DM. This trial was registered at ClinicalTrials.gov (NCT03594240).

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