Paper
The effects of chromium and vitamin D3 co-supplementation on insulin resistance and tumor necrosis factor-alpha in type 2 diabetes: a randomized placebo-controlled trial.
Published May 1, 2020 · fatemeh imanparast, Javad Javaheri, Fatemeh Kamankesh
Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme
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Abstract
The current study was conducted to assess the effects of simultaneous usage with vitamin D3 and chromium picolinate (CrPic) supplementations on insulin resistance (HOMA-IR), fasting blood glucose (FBS), hemoglobin A1c (HbA1c), tumor necrosis factor- α (TNF-α), and lipid profile in type 2 diabetes mellitus (T2DM). 92 patients with T2DM were randomly allocated to four groups to intake oral: (I) placebo of vitamin D3 (n=23); (II) vitamin D3 supplement at a dose of 50000 IU/ week (n=23); (III) CrPic supplement at a dose of 500 µg/day (n=23) and (IV) both vitamin D3 at a dose of 50000 IU/ week and CrPic at a dose of 500 µg/day (n=23) for four months, respectively. HOMA-IR levels increased significantly in groups I and II after the intervention. However, this increase in group I was significantly higher than that in group II after the treatment. HOMA-IR levels were controlled in groups III and IV during the intervention. TNF-α decreased significantly in groups II, III, and IV after the intervention. FBS, HbA1c, and lipid profile did not change significantly in total groups after the intervention. It seems that chromium and vitamin D3 co-supplementation are probably effective in controlling HOMA-IR by decreasing TNF-α in T2DM. • Chromium alone and/ or in simultaneous pretreatment with vitamin D3 is more effective than vitamin D3 in controlling HOMA-IR in T2DM. • Chromium and vitamin D3 alone and/ or in simultaneous pretreatment decrease TNF-α in T2DM.
RCTChromium and vitamin D3 co-supplementation effectively control insulin resistance and decrease TNF- in type 2 diabetes patients, but do not significantly affect fasting blood glucose, HbA1c, or lipid profile.
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