Effects of Vitamin A and Insulin on Diabetic Rats
Author Information
Author(s): Fulya Zobalı, Tanju Besler, Nuray Ari, Cimen Karasu
Primary Institution: Ankara University
Hypothesis
The study investigates the effects of single and combined treatments with vitamin A and insulin on vasomotor activity in diabetic rats.
Conclusion
The combination of vitamin A and insulin provides better metabolic control and reduces diabetes-induced vascular complications compared to insulin alone.
Supporting Evidence
- Insulin treatment normalized the contractile response of diabetic aorta to phenylephrine.
- Vitamin A treatment alone significantly prevented TBARS augmentation in diabetic aorta.
- The combination of vitamin A and insulin removed the inhibitory action of hydrogen peroxide in diabetic aorta.
Takeaway
Giving vitamin A and insulin together helps diabetic rats' blood vessels work better than just giving insulin by itself.
Methodology
The study used male Wistar rats, induced diabetes with streptozotocin, and evaluated vasomotor activity through aorta ring responsiveness to phenylephrine and acetylcholine.
Limitations
The study did not assess long-term effects beyond the 12-week treatment period.
Participant Demographics
Male Wistar rats weighing 250-300 g.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
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