Outward Remodeling of Mesenteric Resistance Arteries in Type 2 Diabetic Mice
Author Information
Author(s): Flavia M. Souza-Smith, Paige S. Katz, Aaron J. Trask, James A. Stewart Jr, Kevin C. Lord, Kurt J. Varner, Dalton V. Vassallo, Pamela A. Lucchesi
Primary Institution: Louisiana State University Health Sciences Center
Hypothesis
This study aimed to characterize structural and molecular remodeling in mesenteric resistance arteries in diabetic and control mice.
Conclusion
The study suggests that flow-induced hemodynamic changes may lead to hypertrophic outward remodeling of mesenteric resistance arteries in type 2 diabetes.
Supporting Evidence
- Diabetic mice showed a 46% increase in superior mesenteric artery blood flow at 12 weeks.
- MRAs from diabetic mice had larger lumen diameters and medial cross-sectional areas compared to controls.
- Expression of matrix regulatory proteins was significantly increased in diabetic MRAs.
Takeaway
The arteries in diabetic mice got bigger and changed shape because of increased blood flow, which is different from what happens in healthy mice.
Methodology
The study used pressure myography to assess structural properties of isolated mesenteric resistance arteries from diabetic and control mice.
Limitations
The study focused only on male mice and may not generalize to females or other models of diabetes.
Participant Demographics
The study involved 12 and 16 week-old male type 2 diabetic db/db mice and control heterozygous Db/db mice.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.001
Digital Object Identifier (DOI)
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