Increased Cholesteryl Ester Uptake in Diabetic Mouse Macrophages
Author Information
Author(s): Guest Christopher B., Hartman Matthew E., O'Connor Jason C., Chakour Kenneth S., Sovari Ali A., Freund Gregory G.
Primary Institution: University of Illinois at Urbana-Champaign
Hypothesis
Macrophages from type-2 diabetic (db/db) mice have increased direct cholesteryl ester uptake and that this is mediated by CD36 and SR-A.
Conclusion
Diabetic mouse macrophages show increased cholesteryl ester uptake due to higher expression of scavenger receptors CD36 and SR-A.
Supporting Evidence
- Diabetic mice showed a 58% increase in cholesteryl ester accumulation compared to controls.
- Blocking CD36 and SR-A reduced cholesteryl ester uptake by 37% and 25%, respectively.
- Flow cytometry revealed a 43% increase in CD36 expression and an 80% increase in SR-A expression in diabetic macrophages.
Takeaway
Mice with diabetes have special cells that can take in more fat, which might make their hearts sick.
Methodology
The study involved administering cholesteryl esters to diabetic and control mice and measuring the uptake in peritoneal macrophages using flow cytometry.
Participant Demographics
The study used B6.Cg-M+/+Leprdb (db/+) and B6.Cg-+Leprdb/+Leprdb (db/db) mice.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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