Porphyromonas gingivalisInfection Accelerates the Progression of Atherosclerosis in a Heterozygous Apolipoprotein E–Deficient Murine Model
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- 19 February 2002
- journal article
- other
- Published by Ovid Technologies (Wolters Kluwer Health) in Circulation
- Vol. 105 (7), 861-867
- https://doi.org/10.1161/hc0702.104178
Abstract
Background— Current epidemiological data suggest that dental infections affecting tooth-supporting tissues (periodontitis) can disseminate into the systemic circulation and thereby contribute to atherosclerosis progression. To test this hypothesis, we investigated the effect of repeated systemic inoculations withPorphyromonas gingivalis(Pg), a putative periodontal pathogen, on the progression of atherosclerosis in heterozygous apolipoprotein E–deficient (ApoE+/−) mice. Methods and Results— Ten-week-old, male ApoE+/−mice fed either a high-fat diet or regular chow were inoculated intravenously with livePg(107CFU) or vehicle once per week for 10, 14, or 24 consecutive weeks. Histomorphometry of plaque cross-sectional area in the proximal aortas, en face measurement of plaque area over the aortic trees,Pg16S ribosomal DNA amplification with polymerase chain reaction, ELISA for systemic proinflammatory mediators, and immunolocalization of macrophages in the proximal aorta were performed. Atherosclerotic lesions of the proximal aortas and aortic trees were more advanced inPg-challenged animals than in vehicle control animals and occurred earlier (at 10 weeks) when no lesions were apparent in control animals. At 24 weeks after inoculation, proximal aortic lesion size quantified by histomorphometry was 9-fold greater in chow-fed mice inoculated withPgthan in noninoculated mice (PPg-inoculated versus noninoculated high-fat diet–fed mice (PPgribosomal DNA was found in the aortas, livers, and hearts 24 weeks after inoculation. Conclusions— These results provide evidence that long-term systemic challenge withPorphyromonas gingivalis, an oral pathogen, can accelerate atherogenic plaque progression.Keywords
This publication has 28 references indexed in Scilit:
- Identification of Periodontal Pathogens in Atheromatous PlaquesThe Journal of Periodontology, 2000
- Bacteremia after dental treatment in mentally handicapped peopleJournal of Clinical Periodontology, 1999
- Poor Oral Health and Coronary Heart DiseaseJournal of Dental Research, 1996
- Detection of Putative Periodontal Pathogens in Subgingival Specimens by 16S Ribosomal DNA Amplification with the Polymerase Chain ReactionClinical Infectious Diseases, 1995
- Diet-induced atherosclerosis in mice heterozygous and homozygous for apolipoprotein E gene disruption.JCI Insight, 1994
- Heat shock protein 60 (GroEL) fromPorphyromonas gingivalis: Molecular cloning and sequence analysis of its gene and purification of the recombinant proteinFEMS Microbiology Letters, 1994
- Dental infections and coronary atherosclerosisAtherosclerosis, 1993
- Dental disease and risk of coronary heart disease and mortality.BMJ, 1993
- Severe hypercholesterolemia and atherosclerosis in apolipoprotein E-deficient mice created by homologous recombination in ES cellsCell, 1992
- Variation with age and disease of an amyloid A protein-related serum component.JCI Insight, 1975