アブストラクト(25巻2号:神奈川歯学)

神奈川歯学

Japanese

Title : 感染根管から分離したVeillonella parvulaの免疫生物活性
Subtitle : 原著
Authors : 長島善久*1,*2, 長田保*1, 梅本俊夫*2
Authors(kana) :
Organization : *1神奈川歯科大学歯内療法学講座, *2神奈川歯科大学口腔細菌学講座
Journal : 神奈川歯学
Volume : 25
Number : 2
Page : 209-220
Year/Month : 1990 / 9
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」 Veillonellaはヒト口腔から高頻度に分離される細菌種であり, 特に舌および唾液中に多く, それらの菌叢の約10%を占めている. さらに感染根管からの分離頻度も極めて高いことが報告されている. 山本(1981), 広畑(1986, 豊島(1986), 谷(1987)および堀場ら(1988)が, 根尖病変を有する感染根管内の細菌叢を解析した結果においては, いずれの報告者もV. parvulaを検出しており, その分離頻度は15.0%~77.8%であると述べている. V. parvulaはグラム陰性菌であり, その細胞成分であるリポ多糖(LPS)は発熱性を示し, シュワルツマン反応を惹起するほか, 免疫系細胞に対する強い生物活性を有している. しかし, 感染実験においては実験動物に対してほとんど病原性を示さないため, 本菌の病原性は確認困難である. わずかに培養細胞に対する増殖抑制作用についてのみV. parvula由来LPSの病因的意義が示唆されているにすぎない.
Practice : 歯科学
Keywords : V. parvula, 根尖病変, 免疫生物活性

English

Title : Immunobiological Activies of Veillonella parvula Isolated from Infected Root Canals
Subtitle :
Authors : Yoshihisa NAGASHIMA*1,*2, Tamotsu Osada*1, Toshio Umemoto*2
Authors(kana) :
Organization : *1Department of Endodontics, Kanagawa Dental College, *2Department of Oral Microbiology, Kanagawa Dental College
Journal : Kanagawa Shigaku
Volume : 25
Number : 2
Page : 209-220
Year/Month : 1990 / 9
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract]: The primary etiological agent of all periapical lesions has long been considered to be bacterial. Furthemore, bacteria from infected root canals are potential antigens capable of initiating immunological reactions in periapical tissues. The purpose of this study, therefore, was clarify the immunological potentials of Veillonella parvula (V. parvula), which was frequently isolated from root canals with periapical lesion. Immunobiological activities of V. parvula sonic extracts were investigated on the enhancement of monocytes migration, induction of interleukin-1 (IL-1) production, mitogenicity and polyclonal activation of B cell. Following results were obtained : 1. Both LPS and protein of V. parvule sonic extracts strongly enhanced the activity of human peripheral monocytes migration. 2. Induction of IL-1 on C3H/HeN mice macrophage by V. parvula sonic extracts were stronger than that of S. typhimurium LPS as positive control. 3. It was found that mitogenicity of LPS from V. parvula on splenocytes was stronger than that of the protein, however mitogenicity on thymocytes was not shown in both preparation. 4. The polyclonal activation of B cell on splenocytes of BALB/c nu/nu mice by V. parvula was induced by the protein and LPS. 5. These findings indicate that both the protein and LPS from V. parvula have a regulation of immunobiological responses against macrophages and lymphocytes.
Practice : Dentistry
Keywords : V. parvula