摘要
目的建立大鼠非甾体类消炎药(NSAID)胃病模型,观察替普瑞酮对NSAID胃病的预防作用。方法成年雄性SD大鼠91只,分为生理盐水组、NSAID组(Ⅰ)、替普瑞酮组(Ⅱ)。后两组再分为如下亚组:Ⅰa组(吲哚美辛5mg·kg^-1·d^-1)、Ⅰb组(吲哚美辛5mg·kg^-1·d^-1及泼尼松10mg·kg^-1·d^-1),Ⅰc组(塞来昔布100mg·kg^-1·d^-1),Ⅰd组(塞来昔布100mg·kg^-1·d。及泼尼松10mg·kg^-1·d^-1)Ⅱa组(替普瑞酮12mg·kg^-1·d^-1,吲哚美辛5mg·kg^-1·d^-1)Ⅱb组(替普瑞酮12mg·kg^-1·d^-1,吲哚美辛5mg·kg^-1·d^-1及泼尼松10mg·kg^-1·d^-1),Ⅱc组(替普瑞酮12mg·kg^-1·d^-1,塞来昔布100mg·kg^-1·d^-1),Ⅱd组(替普瑞酮12mg·kg^-1·d^-1,塞来昔布100mg·kg^-1·d^-1及泼尼松10mg·kg^-1·d^-1)。每组连续用药4d后观察损伤指数(u)和病理组织学变化(Whittle评分),评价胃黏膜损伤情况。同时用RT—PCR检测环氧合酶(COX)同工酶表达情况。结果Ⅰ组的LI(除Ⅰc外)(11.00(1.00—22.5)、8.50(0.75~14.50)、11.00(3.50~14.75),P〈0.01)及Whittle评分均比生理盐水组显著降低(1.00(0.00~1、25)、2.000(0.00—5.00)、1.00(0.00~3.00)、2.00(0.00~2.00),P〈0.01);Ⅱ各亚组的LI(0.00(0、00~0.25)、1.00(0.00~1.50)、0.00(0.00~0.00)、0.00(0.00~1.00),P〈0、05)及Whittle评分比相应的Ⅰ组显著降低(0.00(0.00~0.00)、0.00(0.00~0.50)、0.00(0.00~0.25)、0.00(0.00~0.50),P〈0.05);Ⅰc与Ⅰa组间和Ⅰd与Ⅰc组间比较,LI差异有统计学意义(P〈0.05)。Ⅰ组(除Ⅰc外)和Ⅱ组(除Ⅱc外)的胃黏膜COX-1表达比生理盐水明显减少(0.384±0.031、0.354±0.026、0、753±0.049、0.366±0.035、0.381±0.036、0.766±0.401,P〈0.001),而Ⅰa、Ⅰb、Ⅱa、Ⅱb组COX-2 mRNA表达明昆增多(0.483±0.056、0.448±0.046、0.461±0.050、0.479±0.032,P〈0.001)。Ⅰ亚组和Ⅱ亚组组间比较COX差异无统计学意义。结论COX-2抑制剂有胃黏膜损伤作用,但轻于传统NSAID;糖皮质激素泼尼松能加重NSAID胃病;NSAID胃病的发病机制除了COX-1抑制外,可能有其他因素参与其中;替普瑞酮能有效预防NSAID胃病,但作用机制可能与COX的表达无关。
Objective To construct the model of non-steroidal anti-inflammatory drug (NSAID) induced gastropathy and observe the preventive effects of Teprenone on it in rats. Methods Ninety-one male Sprague-Dawley (SD) rats were divided into normal saline group, model group (Ⅰ ) and prophylaxis group ( Ⅱ ). Group Ⅰ includes four subgroups ( Ⅰ a, Ⅰb, Ⅰc, I d) treated by indomethacin (5 mg· kg^-1 · d^-1 ), combination of indomethacin (5 mg· kg^-1·d^-1 and prednisone (10 mg· kg^-1·d^-1, celecoxib (100 mg· kg^-1·d^-1 and combination of celecoxib (100 mg · kg^-1·d^-1 and prednisone (10 mg · kg^-1·d^-1 respectively. Group li also includes four subgroups ( Ⅱa, Ⅱb,Ⅱc, Ⅱ d) pretreated by teprenone (12 mg · kg^-1·d^-1 compared with groupⅠ. Lesion index (LI), pathohistology index, cyclooxygenase-1 ( COX-1 ) and cyclooxygenase-2 (COX-2) mRNA detected by RT- PCR were observed after 4 days. Results Compared with normal saline group, LI ( 11.00 ( 1.00 - 22. 5 ) , 8. 50 (0. 75 - 14. 50), 11.00 (3.50 - 14.75 ), P 〈 0. 01 ) of three model subgroups ( Ⅰ a, Ⅰb, I d), and pathohistology indexes ( 1.00 ( 0. 00 - 1.25 ), 2. 00 ( 0. 00 - 5.00 ), 1.00 ( 0. 00 - 3.00 ), 2. 00 ( 0. 002.00), P 〈 0.01)of the whole model group increased significantly (P 〈 0.05). Compared with correspongding model subgroups, LIs ( 0. 00 ( 0. 00 ~0. 25 ) , 1.00 ( 0. 00 ~ 1.50 ) , 0. 00 ( 0.00-0.00 ) , 0. 00(0. 00 ~ 1.00), P 〈0. 05) and pathohistology indexes(0. 00(0. 00 ~0. 00) ,0. 00(0. 00 ~0. 50) ,0. 00 (0. 00 ~0. 25) ,0. 00(0. 00 -0. 50) , P 〈0. 05)of prophylaxis subgroups were decreased signigicantly (P 〈 0. 05 ). There was obvious difference in LI between Ⅰc and Ⅰa as well as between Ⅰc and Ⅰd ( P 〈 0. 05 ). Compared with normal saline group, COX-1 mRNA expression of the groups ( Ⅰ a, Ⅰb, I d, Ⅱ a, Ⅱb and Ⅱd) increased (0.384 ± 0.031,0.354 ± 0.026 ,0.753 ± 0.049,0.366 ± 0.035, 0.381 ± 0.036, 0. 766±0. 401, P 〈 0. 001 ) while COX-2 mRNA expression of the above groups decreased statistically (0.483 ± 0.056,0.448 ± 0.046,0.461 ± 0.050,0.479 ± 0.032, P〈 0.001). Conclusions These results suggested gastric mucosa lesions could be resulted from COX-2 inhibitors but better than those induced by traditional NSAID. Prednisone could promote the risk in NSAID induced gastropathy. In addition to COX-1 inhibition, other factors might also involved in NSAID induced gastropathy. Teprenone could prevented from NSAID induced gastropathy but the actions might be not associated with COXs.
出处
《中华医学杂志》
CAS
CSCD
北大核心
2006年第40期2868-2873,共6页
National Medical Journal of China
关键词
消炎药
非甾类
替普瑞酮
胃黏膜损伤
Gastric mucosa
Anti-inflammatory agents, non steroidal
Teprenone