控制包虫病的缓释剂型研究  被引量:5

STUDY ON PRAZIQUANTEL SUSTAINED RELEASE PREPARATIONS IN CANINE ECHINOCOCCOSIS

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作  者:田广孚[1] 刘金凤[1] 贾万忠[1] 刘百林[1] 刘卫[1] 张军[1] 常增荣 杨伟德 李忠清 郭万龙 

机构地区:[1]中国农业科学院兰州兽医研究所 [2]甘肃省天祝藏族自治县畜牧兽医站

出  处:《畜牧兽医学报》1998年第2期174-178,共5页ACTA VETERINARIA ET ZOOTECHNICA SINICA

基  金:"八五"国家科技攻关项目

摘  要:我们对研制的4种抗包虫病犬用吡喹酮缓释剂进行了试验。通过人工感染表明,缓释包埋剂3号皮下植入7和8个月时,预防感染细粒棘球绦虫的保护率达98.46%和97.72%(P<0.01)。在包虫病高发区进行了现场试验,133只犬植入8个月和14个月时用槟榔碱泻下法抽检38只,皆未发现细粒棘球绦虫的感染,而对照犬的感染率为20%(P<0.05)。此外,还研究了反相高效液相色谱检测犬应用吡喹酮缓释剂后的血药浓度。缓释包埋剂3号植入犬1~7个月血药浓度平均为0.81μg/ml,达口服常用驱虫剂量血药浓度的近2/3,预防保护效果达97.72%。n this paper,4 kinds of antiechinococcosis sustained release preparations were investigated in our laboratory.The experimental infection indicated that praziquantel sustained release implant No.3(PSRI No.3)which contained about 1.5 gram praziquantel in three capsules had 98.46% and 97.72% protection rate(P<0.01)7 and 8 month post implantation respectively.38 out of 133 dogs in pilot area were examinated with an arecoline purgation method,and they had no worm burden of Echinococcus granulosus 8 or 14 month post implantation while control dogs had 20% infection rate(P<0.05).At the same time,the praziquantel concentrations in the blood of dogs were measured with reverse high performance liquid chromatography.The average praziquantel content in the blood of dogs was 0.81μg/ml from 1 to 7 month after being given PSRI No.3,0.12 μg/ml 1 to 6 month after being given praziquantel sustained release injection No.3(PSRInj No.3)and 1.18 μg/ml 1 to 8 hour after being given the conventional pesticide dose of praziquantel orally.These results showed that the blood praziquantel concentration of dogs given PSRI No.3 was as 2/3 as that of dogs taking the standard dose orally,and that PSRI No.3 had 97.72% prophylaxis rate.On the other hand,the concentration of dogs given PSRInj No.3 was only as 10.17% as that of dogs taking the oral dose,and PSRInj No.3 had 55.65~65.11% prophylaxis rate.These results have confirmed that PSRI No.3 have a strong efficacy for dogs against E.granulosus infection.

关 键 词:包虫病 缓释剂  液相色谱 吡喹酮 

分 类 号:S858.292[农业科学—临床兽医学] S855.913.2[农业科学—兽医学]

 

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