乳头管灌注LPS对家兔血液中NO和NOS含量的影响
2016-11-25袁曦曹随忠杨齐
袁曦 曹随忠 杨齐



摘 要:目的:探讨急性乳腺炎对家兔血液中一氧化氮(NO)含量和一氧化氮合酶(NOS)活力的影响,为临床治疗家兔乳腺炎提供依据。方法:通过家兔乳头管灌注LPS建立家兔乳腺炎模型,在灌注内毒素前后不同时间点分别测定健康家兔和患病家兔血清中NO的含量和NOS活力,判定乳头管灌注LPS对家兔血液中NO含量和NOS活力的影响。结果:乳头管灌注LPS之后,有明显的体温变化,乳房先稍有肿胀,12h后变红肿,48h变坚硬,5d硬度下降。NO含量和NOS活力均在灌注LPS后上升并在6h达到最高值,NO含量在24h时开始下降,72h时基本下降到接种前水平;NOS活力在12h开始下降,48h时又开始增加。结论:乳头管灌注LPS对家兔血液中NO含量和NOS活力有影响,NO和NOS在乳腺炎的发展过程中有一定的作用,为临床治疗提供理论依据。
关键词:LPS;家兔;NO;NOS
中图分类号 S858.291 文献标识码 A 文章编号 1007-7731(2016)19-0085-04
Abstract:[Objective]To explore the effect of acute mastitis on nitric oxide (NO) content and nitric oxide synthase (NOS) activity in rabbit blood , provide the basis for clinical treatment of mastitis.[Methods]Through the rabbits nipple tube perfusion LPS to establish rabbit mastitis model.at different time pointsbefore and after the infusion of endotoxin,determination of NO content and NOS activity in serum of healthy and diseased rabbits,to determine the effect of nipple tube perfusion LPS on NO content and NOS activity in rabbit blood.[Results]NippletubeafterLPSinfusion, showing significant changes in body temperature,Breast to slightly swollen, 12 hours later become inflamed,48hours become hard,5 days later decreased hardness,NO content and NOS activity were increased after LPS perfusion,And reached the highest value in the 6 hours,NO content began to decline in 24 hours,dropped to the level before vaccination in 72 hours;NOS activity began to decline in 12 hours,began to increase again in 48 hours.[Conclusion]Nipple tube perfusion LPS on rabbit blood NO content and NOS activity, NO and NOS have a certain role in the development process of mastitis, providing a theoretical basis for clinical treatment.
Key words:LPS;Rabbits;NO;NOS
乳腺炎又名乳房炎,是当今世界各国奶牛业中最常见也是造成经济损失最严重的疾病之一。奶牛患上乳腺炎后,不仅会影响牛奶的产量,降低牛奶的品质,还易延长产后发情和妊娠的时间,甚至使病牛失去生产性能,使处于产奶高峰期的奶牛过早被淘汰,给奶牛行业带来了巨大的经济损失[1]。乳腺炎主要是由多种非特定的病原微生物引起,目前已发现约有130多种,常见的有23种,其中细菌14种,霉形体2种,真菌及病毒7种,给乳腺炎的防治带来了很大的困难[2],其中大肠杆菌和金黄色葡萄球菌是最常见的分离菌株。脂多糖(LPS)作为革兰氏阴性菌的细胞壁的主要成分,是导致炎症和感染的重要原因。……
