ผลของเชื้อเฮลิโคแบคเตอร์ไพโลไร ต่อการเสื่อมของเซลล์เยื่อบุผิวช่องปาก : การศึกษาในห้องปฏิบัติการ / รัชดาภรณ์ ศรีอิสาณ = Effect of helicobacter pylori on degenerative changes of oral epithelium : in vitro study / Ruchadaporn Sriesan
Helicobacter pylori, pathogenic bacteria of gastrointestinal system, can induce inflammation and destruction of gastric mucosa. There have been reports of the detection of Helicobacter pylori in oral cavity in dental plaque, saliva and mucosal ulcer as well as reports of the relationship between this pathogen, ulcer and oral mucosal changes. The objective of this present study was to determine the effects of Helicobacter pylori on degenerative changes of oral epithelium (in vitro study) from human normal gingival co-cultured with Helicobacter pylori (108 CFU/ml) for 6 and 24 hours and then examined by Transmission Electron Microscope (TEM). This study used Escherichai coli as a compared group. At both 6 and 24 hours, penetration of bacteria into oral epithelial cells or fibroblasts was not found, but there was some bacterial migration to the interepithelial locations and to the connective tissue at 24 hours. We found the degenerative changes of epithelial cells such as nuclear degeneration, chromatin clumping, condensation of tonofilaments and separation of desmosomes since the first 6 hours, and these changes also were more severe as time elapsed. The result of the compared group, co-cultured with Escherichai coli, was the same as the Helicobacter pylori group. Nonetheless, there was no condensation of tonofilaments in the compared group. In conclusion, Helicobacter pylori could induce the degenerative changes of the oral epithelium without penetrating into epithelial cells.