アブストラクト(49巻1号:神奈川歯学)

神奈川歯学

Japanese

Title : P.gingivalisジンジパインIgY抗体のラット実験歯周炎に対する歯槽骨吸収抑制効果
Subtitle : 原著
Authors : 鹿谷宗司
Authors(kana) :
Organization : 神奈川歯科大学感染制御学講座微生物学分野
Journal : 神奈川歯学
Volume : 49
Number : 1
Page : 16-23
Year/Month : 2014 / 6
Article : 原著
Publisher : 神奈川歯科大学学会
Abstract : 「緒言」Porphyromonas gingivalis(P.gingivalis)は, 黒色色素産生性のグラム陰性嫌気性桿菌であり, 歯周病患者のポケットから高率に分離されること, および本菌に対する血清抗体価が歯周炎患者血清において有意に高いことから, 歯周病発症に関わる有力な細菌の一つとされている. P.gingivalisは, 唾液成分, 頬粘膜細胞, 赤血球, フィブロネクチン-コラーゲン複合物質および他の口腔細菌などに付着する性質を有しており, 本菌のヒト細胞への付着は, 歯周病発症の重要な第一歩であると考えられている. 更に, 糖尿病, 心臓血管疾患, 低体重児出産および誤嚥性肺炎などの全身疾患リスク因子としても注目されている. 本菌の病原因子の一つとして, 菌体表面および菌体外に強力なプロテアーゼを産生することが知られているが, なかでもジンジパイン(gingipains)は本菌の産生する主要なプロテアーゼであり, ペプチド切断部位特異性の異なるArggingipain(Rgp)とLys-gingipain(Kgp)が存在する.
Practice : 歯科学
Keywords : Porphyromonas gingivalis, IgY抗体, ジンジパイン

English

Title : The IgY antibody against P.gingivalis gingipains inhibits alveolar bone resorption on rat experimental periodontitis
Subtitle :
Authors : Souji SHIKAYA
Authors(kana) :
Organization : Division of Microbiology, Department of Infection Control Kanagawa Dental University
Journal : Kanagawa Shigaku
Volume : 49
Number : 1
Page : 16-23
Year/Month : 2014 / 6
Article : Original article
Publisher : Kanagawa Odontological Society
Abstract : [Abstract] Porphyromonas gingivalis has been implicated as an important pathogen in the development of adult periodontitis, and its colonization of subgingival sites is critical in the pathogenic process. The gingipains are cell surface Arg- and Lys-specific proteinases of the bacterium Porphyromonas gingivalis, which has been associated with periodontitis, a disease that results in the destruction of the teeth-supporting tissues. The aim of this study was to investigate the efficacy of egg yolk antibody against gingipains (IgY-GP) to the protection alveolar bone loss by P.gingivalis in rats. Rats were orally infected with P.gingivalis ATCC 33277, which was suspended in 5% carboxymethylcellulose. Each rat received 0.5 ml of the suspension by oral gavage. Then, the IgY-GP and the IgY-Control in 5% carboxymethylcellulose were administered, with each rat receiving 0.5 ml by oral gavage. The upper jaws were used as dry specimens for measuring horizontal alveolar bone loss. The distance between the cementenamel junction (CEJ) and the alveolar bone crest (ABC) was measured at 14 palatal sites per rat. P.gingivalis-infected group showed an increased distance between CEJ and ABC compared to uninfected group, indicating an enhanced alveolar bone loss due to oral infection with P.gingivalis. However, administered the IgY-GP group showed a decreased distance between CEJ and ABC compared to P.gingivalis-infected group. The IgY-GP could be used for the development of passive immunization against P.gingivalis-associated periodontal disease. These findings suggested that the IgY-GP protects P.gingivalis-induced alveolar bone loss.
Practice : Dentistry
Keywords :