Serum lipopolysaccharide neutralizing capacity in ischemic stroke.

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Leskelä , J , Pietiäinen , M , Safer , A , Lehto , M , Metso , J , Malle , E , Buggle , F , Becher , H , Sundvall , J , Grau , A , Pussinen , P J & Palm , F 2020 , ' Serum lipopolysaccharide neutralizing capacity in ischemic stroke. ' , PLoS One , vol. 15 , no. 2 , 0228806 .

Title: Serum lipopolysaccharide neutralizing capacity in ischemic stroke.
Author: Leskelä, Jaakko; Pietiäinen, Milla; Safer, Anton; Lehto, Markku; Metso, Jari; Malle, Ernst; Buggle, Florian; Becher, Heiko; Sundvall, Jouko; Grau, Armin; Pussinen, Pirkko J.; Palm, Frederick
Contributor organization: Doctoral Programme in Oral Sciences
Department of Oral and Maxillofacial Diseases
University of Helsinki
HUS Head and Neck Center
Date: 2020-02-21
Language: eng
Number of pages: 17
Belongs to series: PLoS One
ISSN: 1932-6203
Abstract: Introduction Periodontitis is associated with increased serum lipopolysaccharide (LPS) activity, which may be one mechanism linking periodontitis with the risk of cardiovascular diseases. As LPS-carrying proteins including lipoproteins modify LPS-activity, we investigated the determinants of serum LPS-neutralizing capacity (LPS-NC) in ischemic stroke. The association of LPS-NC and Aggregatibacter actinomycetemcomitans, a major microbial biomarker in periodontitis, was also investigated. Materials and methods The assay to measure LPS-NC was set up by spiking serum samples with E. coli LPS. The LPS-NC, LPS-binding protein (LBP), soluble CD14 (sCD14), lipoprotein profiles, apo(lipoprotein) A-I, apoB, and phospholipid transfer protein (PLTP) activity, were determined in 98 ischemic stroke patients and 100 age- and sex-matched controls. Serum and saliva immune response to A. actinomycetemcomitans, its concentration in saliva, and serotype-distribution were examined. Results LPS-NC values ranged between 51-83% in the whole population. Although several of the LPS-NC determinants differed significantly between cases and controls (PLTP, sCD14, apoA-I, HDL-cholesterol), the levels did not (p = 0.056). The main determinants of LPS-NC were i) triglycerides (beta = -0.68, p Conclusion Serum LPS-NC comprised low PLTP-activity, triglyceride and LDL cholesterol concentrations, as well as high HDL cholesterol and IgG against A. actinomycetemcomitans. The present findings let us to conclude that LPS-NC did not associate with stroke.
Subject: 3111 Biomedicine
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion

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