| Full text | |
| Author(s): |
Cogo, K.
[1, 2]
;
de Andrade, A.
[3]
;
Labate, C. A.
[3]
;
Bergamaschi, C. C.
[4]
;
Berto, L. A.
[2]
;
Franco, G. C. N.
[1]
;
Goncalves, R. B.
[5]
;
Groppo, F. C.
[2]
Total Authors: 8
|
| Affiliation: | [1] Univ Taubate, Dept Dent, BR-12020330 Taubate, SP - Brazil
[2] Univ Estadual Campinas, Dept Physiol Sci, Area Pharmacol Anesthesiol & Therapeut, Piracicaba Dent Sch, Piracicaba - Brazil
[3] Univ Sao Paulo, Super Sch Agr Luiz de Queiroz, Dept Genet, Lab Max Feffer Genet Plants, Piracicaba - Brazil
[4] Univ Sorocaba, Dept Pharmacol, Sch Pharm, Sorocaba - Brazil
[5] Univ Laval, Fac Med Dent, Grp Rech Ecol Buccale, Quebec City, PQ - Canada
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF PERIODONTAL RESEARCH; v. 47, n. 6, p. 766-775, DEC 2012. |
| Web of Science Citations: | 5 |
| Abstract | |
Cogo K, de Andrade A, Labate CA, Bergamaschi CC, Berto LA, Franco GCN, Goncalves RB, Groppo FC. Proteomic analysis of Porphyromonas gingivalis exposed to nicotine and cotinine. J Periodont Res 2012; 47: 766775. (c) 2012 John Wiley \& Sons A/S Background and Objective: Smokers are more predisposed than nonsmokers to infection with Porphyromonas gingivalis, one of the most important pathogens involved in the onset and development of periodontitis. It has also been observed that tobacco, and tobacco derivatives such as nicotine and cotinine, can induce modifications to P. gingivalis virulence. However, the effect of the major compounds derived from cigarettes on expression of protein by P.gingivalis is poorly understood. Therefore, this study aimed to evaluate and compare the effects of nicotine and cotinine on the P.gingivalis proteomic profile. Material and Methods: Total proteins of P gingivalis exposed to nicotine and cotinine were extracted and separated by two-dimensional electrophoresis. Proteins differentially expressed were successfully identified through liquid chromatography-mass spectrometry and primary sequence databases using MASCOT search engine, and gene ontology was carried out using DAVID tools. Results: Of the approximately 410 protein spots that were reproducibly detected on each gel, 23 were differentially expressed in at least one of the treatments. A particular increase was seen in proteins involved in metabolism, virulence and acquisition of peptides, protein synthesis and folding, transcription and oxidative stress. Few proteins showed significant decreases in expression; those that did are involved in cell envelope biosynthesis and proteolysis and also in metabolism. Conclusion: Our results characterized the changes in the proteome of P.gingivalis following exposure to nicotine and cotinine, suggesting that these substances may modulate, with minor changes, protein expression. The present study is, in part, a step toward understanding the potential smokepathogen interaction that may occur in smokers with periodontitis. (AU) | |