Periodontal microbiota and phospholipases: The Oral Infections and Vascular Disease Epidemiology Study (INVEST). Issue 2 (October 2015)

• Record Type: Journal Article
• Authors: Boillot, Adrien; Demmer, Ryan T.; Mallat, Ziad; Sacco, Ralph L.; Jacobs, David R.; Benessiano, Joelle; Tedgui, Alain; Rundek, Tatjana; Papapanou, Panos N.; Desvarieux, Moïse
• Is Part Of: Atherosclerosis. Volume 242:Issue 2(2015)
• Page Start: 418
• Page End: 423
• Publication Date: 2015-10
• Subjects: Arteriosclerosis -- Periodicals; Electronic journals; 616.136
• DOI: 10.1016/j.atherosclerosis.2015.07.039
• Languages: English
• ISSNs: 0021-9150

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <title id="sectitle0015">Objective</title> <p id="abspara0010">Periodontal infections have been linked to cardiovascular disease, including atherosclerosis, and systemic inflammation has been proposed as a possible mediator. Secretory phospholipase A2 (s-PLA2) and Lipoprotein-associated PLA2 (Lp-PLA2) are inflammatory enzymes associated with atherosclerosis. No data are available on the association between oral microbiota and PLA2s. We studied whether a relationship exists between periodontal microbiota and the activities of these enzymes.</p> </sec> <sec> <title id="sectitle0020">Methods</title> <p id="abspara0015">The Oral Infection and Vascular Disease Epidemiology Study (INVEST) collected subgingival biofilms and serum samples from 593 dentate men and women (age 68.7 ± 8.6 years). 4561 biofilm samples were collected in the two most posterior teeth of each quadrant (average 7/participant) for quantitative assessment of 11 bacterial species using DNA–DNA checkerboard hybridization. Mean concentration of s-PLA2 and activities of s-PLA2 and Lp-PLA2 were regressed on tertiles of etiologic dominance (ED). ED is defined as the level of presumed periodontopathic species/combined level of all eleven species measured, and represents the relative abundance of periodontopathic organisms. Analyses were adjusted for age, sex, race/ethnicity, education, smoking, BMI, diabetes, LDL cholesterol and HDL cholesterol, and systolic blood pressure.</p> </sec> <sec> <title id="sectitle0025">Results</title> <p id="abspara0020">Higher levels of s-PLA2 activity were observed across increasing tertiles of etiologic dominance (0.66 ± 0.04 nmol ml<sup>−1</sup> min<sup>−1</sup>, 0.73 ± 0.04 nmol ml<sup>−1</sup> min<sup>−1</sup>, 0.89 ± 0.04 nmol ml−1 min−1; p < 0.001), with also a trend of association between Lp-PLA2 activity and ED (p = 0.07), while s-PLA2 concentration was unrelated to ED.</p> </sec> <sec> <title id="sectitle0030">Conclusion</title> <p id="abspara0025">Increasingly greater s-PLA2 activity at higher tertiles of etiologic dominance may provide a mechanistic explanatory link of the relationship between periodontal microbiota and vascular diseases. Additional studies investigating the role of s-PLA2 are needed.</p> </sec> </abstract>