Vitamin D Pathway Changes in Diabetic Mice
Author Information
Author(s): John L. Fowlkes, R. Clay Bunn, Gael E. Cockrell, Lindsey M. Clark, Elizabeth C. Wahl, Charles K. Lumpkin, Kathryn M. Thrailkill
Primary Institution: Arkansas Children's Hospital Research Institute, Department of Pediatrics, University of Arkansas for Medical Sciences
Hypothesis
Does the excretion of megalin and vitamin D-binding protein coincide with the development of diabetic nephropathy in a mouse model of Type 1 Diabetes?
Conclusion
The study found that diabetic mice experience significant urinary losses of megalin, vitamin D-binding protein, and 25-hydroxy vitamin D, indicating altered vitamin D metabolism in diabetic nephropathy.
Supporting Evidence
- Diabetic mice showed increased urinary excretion of megalin and VDBP.
- 1-α hydroxylase expression was persistently elevated in the kidneys of diabetic mice.
- Urinary losses of VDBP and 25-OHD were significant in diabetic DBA/2J mice.
Takeaway
When mice with diabetes pee out too much vitamin D and its helpers, it might mean their kidneys are not working right.
Methodology
DBA/2J mice were treated with streptozotocin to induce diabetes, and urine and kidney samples were analyzed for megalin, VDBP, and vitamin D metabolites.
Limitations
The study was limited to a specific mouse model and may not fully represent human diabetic nephropathy.
Participant Demographics
DBA/2J mice, a nephropathy-prone model of Type 1 Diabetes.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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