THE CONCENTRATIONS OF PROSTAGLANDIN E2, 6-KETO-PROSTAGLANDIN F1α, AND LEUKOTRIENE B4 IN PULPAL AND PERIAPICAL LESIONS

치수 및 치근단병소에서 Prostaglandin E2, 6-keto-Prostaglandin F1α, Leukotriene B4의 분포에 관한 연구

  • Shon, Won-Jun (Dept. of Conservative Dentistry, College of Dentistry, Seoul National University) ;
  • Baek, Seung-Ho (Dept. of Conservative Dentistry, College of Dentistry, Seoul National University) ;
  • Lim, Sung-Sam (Dept. of Conservative Dentistry, College of Dentistry, Seoul National University)
  • 송원준 (서울대학교 치과대학 치과보존학교실) ;
  • 백승호 (서울대학교 치과대학 치과보존학교실) ;
  • 임성삼 (서울대학교 치과대학 치과보존학교실)
  • Published : 2000.06.05

Abstract

Prostaglandins (PGs) and Leukotrienes (LTs) have been implicated in the genesis of pulpal and periapical inflammation. In this study, the relationships among $PGE_2$, 6-keto-PG $F_1{\alpha}$ (a stable metabolite of $PGI_2$) and $LTB_4$ concentrations in inflamed pulp and periapical lesions were discussed. Pulp tissue were obtained in routine endodontic treatment and periapical lesions in periapical surgery after clinical diagnoses were made. These specimens were divided into four groups as normal pulp group (Control group), acute pulpitis group, chronic pulpitis group, and periapical lesion group. Pulp tissue and periapical lesions were stored in liquid nitrogen. The concentration of $PGE_2$, $PGI_2$ and $LTB_4$ were measured with ELISA. The data were analyzed by one-way ANOVA. Significantly higher levels of $PGE_2$, 6-keto-PG $F_1{\alpha}$ a and $LTB_4$ were found in acute pulpitis group than chronic pulpitis group and periapical lesion group(p<0.05). Periapical lesion group showed significantly higher mean concentrations of $PGE_2$ and $LTB_4$ than chronic pulpitis group. In control and chronic pulpitis group, significant higher levels of $PGI_2$ than $PGE_2$ and $LTB_4$ were found. These results suggested that the high levels of $PGE_2$ and $LTB_4$ in periapical lesions may be due to rich endothelium., fibroblast and lymphocyte known as the main producers of $PGE_2$ and $LTB_4$. $PGI_2$ may be thought to one of the most abundant PGs in normal pulp tissue.