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Cholesterol granulomas in mice deficient in apolipoprotein E
1Johns Hopkins University, School of Medicine, 459 Ross Research Building, 720 Rutland Avenue, Baltimore, MD 21205, USA.
Contemporary Topics in Laboratory Animal Science
|August 7, 2001
Summary
Apolipoprotein E-deficient mice developed cholesterol granulomas and severe atherosclerosis on a standard diet. This suggests a link between genetic factors and diet in cholesterol metabolism and disease development.
Area of Science:
- Cardiovascular Science
- Pathology
- Genetics
Background:
- Apolipoprotein E deficiency is associated with dyslipidemia and atherosclerosis.
- Cholesterol granulomas are rare inflammatory lesions typically found in specific contexts.
Purpose of the Study:
- To investigate the development of cholesterol granulomas in apolipoprotein E-deficient mice on a normal rodent diet.
Main Methods:
- Histopathologic examination of necropsied B6,129 apolipoprotein E-deficient mice.
- Macroscopic and microscopic analysis of tissues for granulomas and atherosclerosis.
Main Results:
- Macroscopic cholesterol granulomas were observed in the gluteal region.
- Microscopic granulomas were present in multiple organs including lymph nodes, spleen, kidneys, and joints.
- Severe atherosclerosis affected the aorta, pulmonary artery, and renal artery.
Conclusions:
- Macroscopic cholesterol granulomas can spontaneously develop in apolipoprotein E-deficient mice fed a standard diet.
- These findings highlight the significant impact of apolipoprotein E deficiency on cholesterol metabolism and the potential for widespread inflammatory responses.
