인도메타신투여가 개의 하악두에서 COX-2와 IGF-I의발현과 분포에 미치는 영향
The effects of indomethacin on distribution and expression of COX-2 and IGF-I in the mandibular condyle of growing dogs
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
이 연구는 PGE2 생합성 억제제인 인도메타신의 투여 시 성장기 개의 하악두 연골에 나타나는 cyclooxygenase -2 (COX-2)와 insulin-like growth factor I (IGF-I)의 발현과 분포를 관찰하여 인도메타신이 하악두 연골 성장에 미치는 영향을 규명하기 위하여 시행하였다. 생후 12-13주된 잡견 8마리를 4군으로 구분하였다. 통상적 복용량인 인도메타신 2 mg/Kg/day을 각각 7일과 14일간 투여한 군, 과량인 8 mg/Kg/day을 14일간 투여한 군과 무처치군인 대조군으로 구분하였으며, 하악두를 연구대상으로 하였다. 연구대상 하악두는 5 μm 두께의 절편을 만들어, H-E 중염색, COX-2 면역염색, IGF-I 면역염색을 시행하여 광학 현미경으로 검경하였으며, tartrate resistant acid phosphatase (TRAP) 염색 후 파연골세포의 수를 측정하여 다음과 같은 결과를 얻었다. 인도메타신은 하악두 연골의 증식대에서 COX-2와 IGF-I의 발현과 분포를 억제시켰으며, 인도메타신의 투여기간에 비례해서 파연골세포 수는 유의성 있게 감소하였다 (p < 0.01). IGF-I의 발현과 분포는 인도메타신의 투여 양과 기간에 비례하여 억제되었다. 이상의 결과에 의하면 인도메타신의 투여는 하악두 연골에서 COX-2와 IGF-I의 발현과 분포를 억제하고 파연골세포의 수를 감소시켜 하악두 성장을 억제할 가능성이 있음을 시사한다.
Abstract
This study aimed to investigate the effects of indomethacin on distribution and expression of COX-2 and IGF-I in the mandibular condyle of growing dogs and to examine the number of chondroclasts around the mineralization zone. Indomethacin inhibits prostaglandin E2 production in the tissue by inhibiting synthesis of cyclooxygenase 2. Prostaglandin E2 stimulates insulin-like growth factor synthesis. Insulin-like growth factor stimulates growth of mandibular condylar cartilage. Eight mongrel dogs, aged 13 - 14 weeks, were divided into 4 groups. Group 1 and group 2 were administered indomethacin 2 mg/Kg/day orally two times a day for 7 days and 14 days respectively. Group 3 were administered indomethacin 8 mg/Kg/day orally 2 times a day for 14 days, and the control group were administered a placebo. The mandibular condyle heads were sectioned in 5 ㎛ thickness. The specimens were stained with H-E staining, COX-2 immunohistochemical staining and IGF-I immunohistochemical staining and examined under light microscope. After TRAP staining, the number of chondroclasts were calculated. The observed results were as follows: Indomethacin inhibited expression and distribution of COX-2 and IGF-I on the proliferative zone of condylar cartilage. Indomethacin decreased the number of chondroclastes on the mineralization zone by a time- dependent manner (p < 0.05). Indomethacin inhibited expression and distribution of IGF-I by a dose- and time-dependent manner. These results show that indomethacin inhibited expression and distribution of COX-2 and IGF-I on the proliferative zone of condylar cartilage and decreased the number of chondroclasts and suggests that when indomethacin is administered for a long time, condyle growth could be delayed.
참고문헌 (28)
- "Growth and growth pressure of mandibular condylar and some primary cartilages of the rat in vitro", 90, pp.19~28 (1986)
- "An immunohistochemical study of regional differences in the distribution of type I and type II collagens in rat mandibular condylar cartilage", 41, pp.863~9 (1996)
- "Growth stimulation of mandibular condyles and femoral heads of newborn rats by IGF-I", 49, pp.165~75 (2004)
- "Indomethacin inhibits bone resorption in vitro without affecting bone collagen synthesis", 12, pp.466~70 (1982)
- "Influence of prostaglandins on DNA and matrix synthesis in growth plate chondrocytes", 7, pp.397~404 (1992)
- "Prostaglandin:stimulation of bone resorption in tissue culture", 86, pp.1436~40 (1970)
- "Bone resorption in vitro and in vivo in PGE-treated mice", 156, pp.373~7 (1977)
- "Prostaglandin E2 regulates the gene expression of bone matrix metalloproteinase-1 in mouse osteoblasts", 22, pp.49~60 (2000)
- "The effect of prostaglandin E2 on costochondral chondrocyte differentiation is mediated by cAMP and protein kinase C", 139, pp.1825~34 (1998)
- "Characterization of PGE2 receptors and their role as mediators of 1 2D3 effects on growth zone chondrocytes", pp.25 261~74 (2001)
- "Local administration of IGF-I stimulates the growth of mandibular condyle in mature rats", 31, pp.138~43 (2004)
- "The early postnatal development of the murine mandibular condyle is regulated by endogenous insulin-like growth factor-I", 137, pp.21~6 (1993)
- "Insulin-like growth factor I measurement in diagnosis and management of acromegaly", 38, pp.297~303 (2001)
- "Prostaglandin E2 up- regulates insulin-like growth factor binding protein-3 expression and synthesis in human articular chondrocytes by a c-AMP-independent pathway:Role of calcium and protein kinase A and C", 63, pp.320~33 (1996)
- "Effect of antiinflammatory drugs on COX-1 and COX-2 activity in human articular chondrocytes", 26, pp.1366~73 (1999)
- "Distribution of insulin-like growth factor-I mRNA in the mandibular condyle and rib cartilage of the rat during growth", 47, pp.791~8 (2002)
- "Simultaneous stimulation of EP2 and EP4 is essential to the effect of prostaglandin E2 in chondrocyte differentiation", 11, pp.644~52 (2003)
- "Prevention of heterotopic ossification after spinal cord injury with indomethacin", 39, pp.370~4 (2001)
- "Insulin-like growth factor I accelerates proliferation and differentiation of cartilage progenitor cells in cultures of neonatal mandibular condyles", 128, pp.56~64 (1993)
- "Spatiotemporal expression of alternatively spliced IGF-I mRNA in the rat costochondral growth plate", 160, pp.461~7 (1999)
- "The effects of prostaglandin E2 in growing rats:Increased metaphyseal hard tissue and cortico-endosteal bone formation", 37, pp.148~57 (1985)
- "Prostaglandin E2 stimulates DNA synthesis by a cAMP- independent pathway in osteoblastic clone MC3T3-E1 cells", 128, pp.155~61 (1986)
- "Insulin-like growth factor I has independent effects on bone matrix formation and cell replication", 122, pp.254~60 (1988)
- "Prostaglandin E2 stimulates insulin-like growth factor-1 synthesis in osteoblat- enriched cultures from fetal rat bone", 128, pp.2895~900 (1991)
- "Inhibition of osteoclast-like cell formation by sodium salicylate and indomethacin in mouse bone marrow culture", 65, pp.27~34 (1994)
- "Histomorphometric and biochemical study of osteoclasts at orthodontic compression sites in the rat during indomethacin inhibition", 42, pp.717~26 (1997)
- "Dose-effect and evidence of escape of inhibition after indomethacin treatment in a synchronized model of bone resorption", 38, pp.290~4 (1993)
- "인도메타신이 개의 유치 치근흡수에 미치는 영향" (2003), 경희대학교 대학원 치의학과 박사논문
