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Open Access Vascular Alterations in Response to Air Desiccation Injury in the Carotid Artery of the C3H HeJ Mouse

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The purpose of this study was to develop a model of vascular injury in 8-week-old C3H/HeJ mice (weight, 25 to 30 g) by using air desiccation. The carotid arteries were excised 1 to 8 weeks postinjury and evaluated by Verhoeff's stain and immunocytochemistry. In the first group of mice studied (n = 107), neointimal formation occurred and peaked at Day 14. In addition, medial cell division (measured by bromodeoxyuridine labeling) peaked at Day 3, whereas intimal cell proliferation increased gradually throughout the experimental period of 21 days. In addition, extensive thrombus formation occurred within 3 days after injury. The next experiment involved 124 mice and evaluated the effect of anticoagulants on the neointimal and thrombotic response. Mice received aspirin, heparin, or vehicle-only time-release pellets. Both anticoagulants significantly decreased the neointimal and thrombotic responses. The results of this study validate our animal model as being consistent with the Response to Injury Hypothesis of atherogenesis.

Document Type: Research Article

Affiliations: 1: College Misericoridia, Dallas, Pennsylvania 2: Department of Cell Biology and Anatomy, LSU Health Sciences Center, New Orleans, Louisiana 3: Virginia Commonwealth University Reanimation Engineering Shock Center, MCV Main Hospital, Richmond, Virginia

Publication date: 2005-10-01

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  • Comparative Medicine (CM), an international journal of comparative and experimental medicine, is the leading English-language publication in the field and is ranked by the Science Citation Index in the upper third of all scientific journals. The mission of CM is to disseminate high-quality, peer-reviewed information that expands biomedical knowledge and promotes human and animal health through the study of laboratory animal disease, animal models of disease, and basic biologic mechanisms related to disease in people and animals.

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