青蒿琥酯对体外培养的卫氏并殖吸虫童虫及成虫杀虫效果观察

目的观察青蒿琥酯(Art)对体外培养的卫氏并殖吸虫童虫与成虫的杀虫效果。方法卫氏并殖吸虫童虫及成虫用含不同浓度Art的的RPMI1640培养基体外培养后作光镜与电镜观察。结果0.25mg/mL组体外培养24h后,虫体萎缩,扫描电镜观察部分体棘消失、倒伏、絮状物附着;透射电镜显示皮层水肿、细胞器及分泌颗粒减少,卵黄腺萎缩,卵巢卵细胞胞浆空泡变等。结论青蒿琥酯对卫氏并殖吸虫童虫及成虫有损伤作用。     

青蒿琥酯治疗大鼠斯氏狸殖吸虫感染

目的观察青蒿琥酯对大鼠斯氏狸殖吸虫感染的治疗效果。方法用斯氏狸殖吸虫囊蚴腹腔内注射感染大鼠,感染30d后用不同疗程和剂量给予治疗。治疗结束后30d剖杀所有大鼠,收集虫体。同时设吡喹酮治疗组和对照组。结果青蒿琥酯每周1次给药连服4次,50mg/kg、100mg/kg、150mg/kg组、吡喹酮治疗组、对照组的检虫率分别为35.5%、37.0%、37.5%、19.5%和40.5%。青蒿琥酯50mg/kg.7d组、100mg/kg.7d组、150mg/kg.7d组、吡喹酮治疗组、对照组的检虫率分别为26.0%、23.3%、70.0%、22.7%、83.3%。结论青蒿琥酯对大鼠体内的斯氏狸殖吸虫有较好的杀虫效果。     

3种青蒿素衍生物对日本血吸虫吡喹酮抗性株童虫的体内作用效果观察

目的观察3种青蒿素衍生物双氢青蒿素、青蒿琥酯和蒿甲醚对日本血吸虫吡喹酮抗性株童虫的体内作用效果。方法以经11轮亚治疗剂量吡喹酮筛选的日本血吸虫为吡喹酮抗性株,以未暴露于吡喹酮的日本血吸虫作为吡喹酮敏感株,收集2虫株尾蚴感染小鼠,以300mg/kg双氢青蒿素、青蒿琥酯和蒿甲醚对感染后7~8 d童虫分别进行2次灌服用药(总剂量600 mg/kg),所有小鼠于感染后45 d解剖,收集小鼠体内成虫并计数,计算减虫率和减雌率。结果 300 mg/kg双氢青蒿素、蒿甲醚和青蒿琥酯2日疗法(总剂量600 mg/kg)对日本血吸虫吡喹酮敏感株7~8 d童虫的减虫率为69.8%~71.0%,减雌率为75.4%~79.8%;对日本血吸虫吡喹酮抗性株7~8 d童虫的减虫率为64.6%~66.1%,减雌率为69.3%~71.1%,差异均无统计学意义(均p0.05)。结论 日本血吸虫吡喹酮抗性株对青蒿素类衍生物双氢青蒿素、青蒿琥酯和蒿甲醚依然敏感,青蒿素衍生物与吡喹酮在日本血吸虫中不存在交叉抗药性。     

三苯双脒、青蒿琥酯和吡喹酮治疗感染华支睾吸虫金色仓鼠的疗效观察

目的 观察三苯双脒、青蒿琥酯和吡喹酮对感染华支睾吸虫金色仓鼠的疗效。 方法 93只仓鼠各感染30个华支睾吸虫囊蚴, 分组后灌胃顿服给药治疗, 观察各组疗效。① 31只感染仓鼠中, 20只于感染后14 d随机均分为4组, 分别为青蒿琥酯300 mg/kg组、三苯双脒100 mg/kg和200 mg/kg组、吡喹酮200 mg/kg组, 观察药物对华支睾吸虫童虫的作用;另6只于感染后24 d随机均分为2组, 分别为三苯双脒200 mg/kg组和青蒿琥酯300 mg/kg组;余5只作对照组。② 22只仓鼠于感染后28 d随机分成5组（每组4～5只）, 分别为三苯双脒25 mg/kg和50 mg/kg组、青蒿琥酯25 mg/kg组、吡喹酮50 mg/kg组, 以及对照组。③ 40只仓鼠于感染后28 d随机分成8组（每组4～6只）, 分别为三苯双脒50 mg/kg、100 mg/kg和200 mg/kg组, 青蒿琥酯100 mg/kg和200 mg/kg组, 吡喹酮100 mg/kg和200 mg/kg组, 以及对照组。各组受治鼠于治疗后2周剖杀, 收集胆道系统内的残留华支睾吸虫, 计算各组的平均虫数和减虫率。 结果 仓鼠感染华支睾吸虫囊蚴后14 d, 三苯双脒100 mg/kg和200 mg/kg组, 以及吡喹酮200 mg/kg组的平均虫数均显著低于对照组（P<0.05）, 减虫率分别为90.6%、85.9%和71.9%;青蒿琥酯300 mg/kg组平均虫数与对照组差异无统计学意义（P>0.05）。感染后24 d, 童虫已发育为成虫, 三苯双脒200 mg/kg组平均虫数显著低于对照组（P<0.01）, 减虫率为89.8%;青蒿琥酯300 mg/kg组的减虫率为100%。感染后28 d, 三苯双脒25 mg/kg组平均虫数显著低于对照组（P<0.05）, 减虫率为71.8%, 剂量增至100 mg/kg时, 减虫率为100%;青蒿琥酯25 mg/kg和100 mg/kg组的减虫率分别为20.0%和56.4%, 剂量增至200 mg/kg时, 减虫率为98.5%, 其平均虫数显著低于对照组（P<0.01）。吡喹酮100 mg/kg和200 mg/kg组的减虫率分别为78.9%和83.5%, 其平均虫数均与对照组的差异有统计学意义（P<0.05）。 结论 三苯双脒和吡喹酮对感染华支睾吸虫童虫和成虫的仓鼠均有较好的疗效, 青蒿琥酯仅对成虫有效。     

用三苯双脒、吡喹酮和青蒿琥酯临床给药方案治疗感染华支睾吸虫大鼠的研究

目的观察临床应用三苯双脒、青蒿琥酯和吡喹酮的给药方案治疗感染华支睾吸虫大鼠的疗效。方法将临床试用于治疗华支睾吸虫感染的三苯双脒、青蒿琥酯和吡喹酮剂量用不同种属动物等效剂量换算法换算为大鼠用的剂量,并按临床药物联合用药方案,设置了以下的剂量疗程,即三苯双脒16或32mg/(kg·d)×1d、2d和3d(bid),8或16mg/(kg·d)×3d;青蒿琥酯12mg/(kg·d)×3d(tid)和16mg/(kg·d)×3d(bid);吡喹酮143mg/(kg·d)×2或3d(tid),143mg/(kg·d)×2d或3d(bid)和47.7或71.5mg/(kg·d)×3d。151只大鼠(每鼠灌胃感染华支睾吸虫囊蚴50只)分2批,第1批79只大鼠于感染后5周分为13组,每组5～6鼠,其中6组单用三苯双脒、青蒿琥酯或吡喹酮治疗,另7组用三苯双脒与青蒿琥酯或吡喹酮联合治疗,或吡喹酮与青蒿琥酯联合治疗,余8鼠作对照。第2批72只大鼠于感染后6周,分为13组(每组5只),其中7组和6组分别用三苯双脒和吡喹酮的不同剂量疗程治疗,余7鼠作对照。于治疗结束后2周剖杀小鼠,收集胆管和肝组织内的华支睾吸虫,计算各组的平均虫数和减虫率,用非参数统计方法 (Mann-Whitney秩和检验)进行分析。结果第1批试验中,三苯双脒16或32mg/(kg·d)×3d(bid),吡喹酮143mg/(kg·d)×3d(tid)或143mg/(kg·d)×3d(bid)各治疗组的平均虫数均明显低于对照组(P﹤0.01),减虫率为94.2%～96.0%。感染大鼠用青蒿琥酯12mg/(kg·d)×3d(tid)治疗无效,而16mg/(kg·d)×3d(bid)则有57.2%的减虫率,其平均虫数明显低于对照组(P﹤0.05)。三苯双脒16或32mg/(kg·d)×3d(bid)与吡喹酮143mg/(kg·d)×3d(bid),或与青蒿琥酯16mg/(kg·d)×3d(bid)联合治疗组,各组平均虫数均显著少于对照组(P﹤0.01),减虫率为94.2%～99.4%,即联合治疗的疗效与三苯双脒和吡喹酮单用组相仿,但显著高于青蒿琥酯单用组。吡喹酮143mg/(kg·d)×3d(tid)与青蒿琥酯12mg/(kg·d)×3d(tid),或吡喹酮143mg/(kg·d)×3d(bid)与青蒿琥酯16mg/(kg·d)×3d(bid)联合治疗组的减虫率达93.6%～100%。第2批试验中,三苯双脒16或32mg/(kg·d)×2d和3d(bid)治疗组的平均虫数间差异无统计学意义(P0.05),减虫率为86.5%～95.1%,而三苯双脒32mg/(kg·d)×1d(bid)治疗组,减虫率仅为73.0%,但8或16mg/(kg·d)×3d(qd)的减虫率为88.3%～92.6%,吡喹酮143mg/(kg·d)×3d(tid)治疗组的减虫率为96.9%,若同剂量给药2d的减虫率降至63.2%,而47.7mg/(kg·d)×3d(qd)则无效;吡喹酮143mg/(kg·d)×2d和3d(bid)的减虫率相仿,达87.7～95.1%,若同剂量每日顿服,连服3d则无效。结论以人用的三苯双脒、吡喹酮和青蒿琥酯的剂量换算为大鼠用的剂量,并按临床用的疗程治疗感染华支睾吸虫的大鼠,除青蒿琥酯外,均有很好的治疗效果,其中三苯双脒的疗程可由3d缩减为2d。由于单用三苯双脒和吡喹酮已有很高的疗效,故它们之间以及和青蒿琥酯的联合治疗不易显现增效作用。     

青蒿琥酯与吡喹酮联合应用早期治疗兔血吸虫病的实验观察

目的 观察青蒿琥酯与吡喹酮先、后使用早期治疗兔血吸虫病的效果。方法 实验共分4组，第1组于感染后第7天首服青蒿琥酯，第35天再服吡喹酮，剂量分别为20mg／kg和40mg/kg。第2组为单青蒿琥酯组，于感染后第7天首服青蒿琥酯，剂量为20mg/kg，每周服1次，连服4次。第3组为单用吡喹酮组，于感染后第35天顿服吡喹酮，剂量为40mg/kg。第4组为不服药对照组。各组于停药后4周解剖，检获成虫，比较各组的减虫率、减雌率和肝脏变化。结果 以感染后第7天首服青蒿琥酯，第35天再服吡喹酮的效果最好，减虫率为97．88％、减雌率达98．63％，6只兔中有2只无虫。单青蒿琥酯和单吡喹酮两组的减虫率分别为94．32％和71．67％，减雌率为96．14％和80．75％。结论 青蒿琥酯与吡喹酮先、后用药组明显优于吡喹酮组(P＜0．01)，但与青蒿琥酯组比较差异不显著，然而缩短了疗程，减少了费用，便于现场使用。     

青蒿琥酯治疗家犬卫氏并殖吸虫感染的效果观察

目的探讨青蒿琥酯（Art）对双倍体卫氏并殖吸虫病的治疗作用。方法1）卫氏并殖吸虫成虫用含不同浓度Art的RPMI 1640培养基体外培养后作电镜观察;2）实验犬常规感染卫氏并殖吸虫囊蚴,76 d后用青蒿琥酯50和80mg/kg灌胃治疗,103 d解剖犬,作常规病理检查,取出的虫体作电镜观察。结果1）5 mg/kg组体外培养24 h后,虫体萎缩,扫描电镜观察部分体棘消失、倒伏、絮状物附着;透射电镜显示皮层水肿、细胞器及分泌颗粒减少,卵黄腺萎缩,卵巢卵细胞胞浆空泡变等;2）两治疗犬体内虫体萎缩,厚壁囊肿数分别为28和35个,对照犬为16个,差异有显著性（P〈0.05）;透射电镜显示成虫变化与体外培养试验相似。结论青蒿琥酯对卫氏并殖吸虫有损伤作用。     

青蒿琥酯和吡喹酮防治血吸虫病相互作用的研究

本文就血吸虫病防治药青蒿琥酯与血吸虫病防治药吡喹酮的相互作用进行了初步探讨，实验结果表明：小鼠口服青蒿琥酯３００μｇ／ｋｇ对第７天、第８天的童虫有杀灭作用，减虫率为７１．６％，减雌率为７２％；口服吡喹酮３００ｍｇ／ｋｇ对第７天童虫无效，对第３０天成虫有明显杀灭作用，减虫率为７２％，减雌率为７８．３％；青蒿琥酯与吡喹酮同时服，或者先服吡喹酮后服青琥酯均明显影响青琥酯的杀童虫作用；先服青蒿琥酯而后服吡     

卫氏并殖吸虫在大鼠体内的发育和吡喹酮治疗的观察

卫氏并殖吸虫囊蚴经腹腔感染大鼠后,96.7％的吸虫寄生于肌肉内,其中绝大多数(99％)停滞于童虫阶段,极少数虫体(1％)游离于肝脏或胸腔,并能发育为成虫而产卵。吡喹酮治疗感染的大鼠,总剂量为240mg/kg,两日分服,可杀死大部分童虫,证明吡喹酮对卫氏并殖吸虫量虫有明显的杀虫作用。     

青蒿琥酯抗日本血吸虫童虫和成虫作用的研究

目的 观察青蒿琥酯对不同阶段日本血吸虫的损害作用,揭示青蒿琥酯的杀虫机制.方法小鼠感染尾蚴18 d时给予青蒿琥酯300 mg/kg,24 h后灌注法收集童虫,并用紫外吸收法和Bradford标准曲线法测定青蒿琥酯对日本血吸虫18 d童虫DNA和蛋白质含量的影响;分别将10条虫体在含有3H胸腺嘧啶核苷的培养基中培养24 h后,用滤膜法和匀浆法测定青蒿琥酯对标记核苷掺入童虫DNA的影响;感染血吸虫尾蚴21 d的小鼠一次性灌服青蒿琥酯300 mg/kg,给药后21 d,灌注法收集成虫,观察青蒿琥酯对日本血吸虫成虫生殖器官大小及生殖细胞发育的影响;小鼠感染血吸虫33 d时给予同样的青蒿琥酯进行治疗,24 h和48 h后处死小鼠,将肝脏制作组织切片,在光镜下观察同等剂量青蒿琥酯引起的成虫肝移和形态学变化的影响.结果 青蒿琥酯体内作用18 d的虫体,24 h后,童虫的DNA和蛋白质含量均较对照组明显减少,减少率分别为23.0%和33.6%(P＜0.01);在含有3H胸腺嘧啶核苷的培养基中培养24 h后,童虫摄入标记的核苷及核苷掺入童虫DNA的量较对照组也明显减少,减少率分别为61.1%和40.8%(P＜0.01);21 d给药组小鼠体内雌虫卵巢的成熟、发育受到了抑制;药物作用于虫体33 d后能明显引起虫体形态的变化,特别是虫体体表.结论 青蒿琥酯能减少日本血吸虫童虫蛋白质和DNA的含量,能明显抑制虫体对标记核苷的摄入以及标记核苷掺入虫体DNA的量,能引起虫体体表明显的组织形态学变化,并且能抑制雌虫卵巢的发育,降低或抑制雌虫的产卵,能有效减轻血吸虫病的病情和控制传播.     

吡喹酮对小鼠卫氏并殖吸虫童虫的疗效及T淋巴细胞的变化

目的 探讨吡喹酮对转续宿主体内滞育童虫的杀虫效果以及吡喹酮有效治疗后感染小鼠T淋巴细胞及其亚群的变化。 方法 将不同数量的江西二倍体型卫氏并殖吸虫囊蚴感染小鼠,10 d后用不同剂量、不同疗程吡喹酮进行治疗。治疗结束后7 d,剖杀检虫观察疗效以及小鼠T淋巴细胞及其亚群的变化。 结果 当小鼠感染30个囊蚴,用吡喹酮400、500和600 mg/(kg·d),连续3 d给药,其减虫率分别为71.01％±10.38％、82.29％±7.92％和95.83％±3.24％;当小鼠感染80个囊蚴时,用吡喹酮600 mg(kg·d),连续3 d给药,减虫率仅为84.49％±10.91％。小鼠经吡喹酮治疗1wk后,T淋巴细胞及其亚群开始升高,在第8周恢复正常。 结论 吡喹酮对卫氏并殖吸虫童虫的疗效比成虫差,其疗效与药物剂量和小鼠感染度有关,增加剂量或增加疗程可增强杀虫效果。     

A case of Paragonimiasis westermani with pleural effusion eight months after migrating subcutaneous induration of the abdominal wall]

Patients with Paragonimiasis westermani show a typical ring form or nodular shadow on chest X-ray, cough, sputum, and hemosputum. Recently, case reports of Paragonimiasis westermani, accompanied by pneumothorax and pleural effusion, as for Paragonimiasis miyazakii, have been increasing. Paragonimus westermani often causes an ectopic infection in various organs such as the peritoneal cavity, pleural cavity, pericardium, liver, adrenal gland and brain. Cutaneous paragonimiasis is considered one of the typical forms of ectopic infection in its earlier phase, but a few unexpected cases of cutaneous Paragonimiasis westermani have also been reported. A 68-year old man, who had never eaten fresh-water crab or raw sliced meat of wild boar, noticed subcutaneous induration of the abdominal wall. The induration had been gradually moving upwards and to the right from the infraumbilical region for over 20 days, and then disappeared at the right upper lateral abdominal wall. Eight months later, he developed severe pain in the right lower chest, and a chest X-ray showed right pleural effusion. Laboratory examinations revealed eosinophilia (WBC 3940/mm3, eosinophil 9%), elevated ESR, and an elevated serum total IgE level (5517 IU/ml). Ouchterlony's double diffusion test performed with the patient's serum in agarose showed strong bands toward Paragonimus westermani antigen, compared to Paragonimus miyazakii antigen. Immunoelectrophoresis with the patient's serum showed specific bands toward Paragonimus westermani antigen. This patient was finally diagnosed as having Paragonimiasis westermani infection, and he responded to praziquantel administration. The clinical course of this patient appears to be rare in cases of Paragonimiasis westermani infection. The clinical course of this case resembled some cases of Paragonimiasis miyazakii infection.(ABSTRACT TRUNCATED AT 250 WORDS)     

Active hepatic capsulitis caused by Paragonimus westermani infection

Paragonimiasis is an important re-emerging parasitosis in Japan. Although the lungs and pleural cavity are the principal sites affected with the parasite, ectopic infection can occur in unexpected sites such as skin and brain. This case report describes a patient with active hepatic capsulitis due to Paragonimus westermani infection. The patient was successfully treated with praziquantel at the dose of 75 mg/kg/day for 3 days.     

吡喹酮直肠给药治疗小鼠血吸虫病实验研究

目的 观察吡喹酮直肠给药对小鼠日本血吸虫病的治疗效果.方法 各实验组每只小鼠分别腹部贴片感染日本血吸虫尾蚴40±2条.感染后第42天以吡喹酮直肠给药,按给药不同剂量设为3组,每组每只小鼠按100、200、400 mg/kg一次给药,同时设不给药对照组.给药1周后进行剖杀,计算减虫率、减肝卵率以及减配对率.结果 200 ...     

Paragonimiasis in Yongjia County,Zhejiang Province,China: clinical,parasitological and karyotypic studies on Paragonimus westermani

Paragonimiasis in Yongjia County, Zhejiang Province, China, has been of such public health concern that a specialized Institute for Paragonimiasis Control has been established there. The study reported here involved both parasitological research on Paragonimus westermani in the endemic areas and a clinical analysis of 94 cases of paragonimiasis. Eggs were found in sputum, feces and brain tissue in 45 cases. Twenty patients, 19 of whom where children under 10 years of age, showed hepatic injury. Treatment with praziquantel or bithionol had satisfactory results in all cases. Dimensions of the parasite eggs, metacercariae from freshwater crabs and adult flukes suggested that the form of P. westermani in Yongjia is the 'small type': a suggestion supported by karyotypic studies on gonad cells from adult flukes collected from experimentally infected animals as all were found to be diploid. In conclusion, the 'small type' or diploid form of P. westermani is the cause of paragonimiasis pulmonary symptoms in Yongjia.     

青蒿琥酯对小鼠曼氏血吸虫虫卵肉芽肿形成的影响

目的通过口服青蒿琥酯,观察其对曼氏血吸虫感染小鼠肝脏肉芽肿形成的影响。方法小鼠经尾部接触感染曼氏血吸虫尾蚴后,经不同时间、不同剂量喂服青蒿琥酯,治疗后2～6周解剖,取肝脏作石蜡切片,进行H.E.染色,显微镜下作病理学观察,并测定虫卵肉芽肿的面积。结果未给药对照组虫卵肉芽肿由大量炎性浸润细胞及间质成纤维细胞组成,服药组肝切片未见虫卵肉芽肿或虫卵肉芽肿面积明显小于对照组,肉芽肿周围少量炎性细胞浸润。100mg/kg组肉芽肿面积与对照比较无显著性差异(P>0.05)。但肉芽肿面积比对照减小36.9%。300、500mg/kg组病理切片未查到虫卵和肉芽肿。不同虫龄服药组肉芽肿面积与对照比较均有显著性差异(P<0.05～P<0.01)。其中21、22d服药组肝切片未查到虫卵和肉芽肿。结论青蒿琥酯能抑制虫卵肉芽肿的形成,降低虫体产卵率并减少形成的肉芽肿对肝脏的损害。     

吡喹酮对曼氏裂头蚴感染小鼠治疗效果的进一步观察

目的进一步观察吡喹酮对曼氏裂头蚴感染小鼠的疗效。方法将72只小鼠分为8组（每组9只）,每只小鼠经口感染5条裂头蚴,感染后1周1-3组分别应用2 000、2 800、3 600mg/kg吡喹酮治疗1个疗程（每日3次,疗程3d）后1周剖杀,4-6组治疗2个疗程后1周剖杀,7、8组为对照组。另选40只小鼠分为4组（每组10只）,每只经口感染5条裂头蚴,感染后14周1～3组应用2 000mg/kg吡喹酮治疗后1、3、5周剖杀;4组为对照组。各组小鼠剖杀后收集裂头蚴数并计算各组的平均检出虫数和减虫率,光镜下观察虫体形态变化。结果小鼠感染裂头蚴后1周,应用2 000、2 800、3 600mg/kg吡喹酮治疗1个疗程后的减虫率分别为70.6%、77.3%及84%（P〉0.05）,治疗2个疗程后的减虫率分别为57.1%、54.6%及54.6%（P〉0.05）。小鼠感染裂头蚴后14周,应用2 000mg/kg吡喹酮治疗后1、3及5周的减虫率分别只有28%、20%及20%（P〉0.05）;虽然治疗后裂头蚴虫体有断裂现象,体壁上出现突起、溃烂及溶解等,但虫体头部无明显破坏。结论增加剂量与疗程不能提高吡喹酮对裂头蚴感染小鼠的疗效;吡喹酮对裂头蚴病的治疗效果可能与感染后的治疗时间有关。     

Paragonimiasis westermani caused by ingestion of Chinese freshwater crabs]

We encountered three cases of paragonimiasis westermani caused by ingestion of Chinese freshwater crabs. All patients are Chinese living in Japan who had a history of eating raw Shanghai crabs at the Chinese restaurant owned by one of them. A few months later they complained of cough, chest pain and dyspnea. On examination, their peripheral blood showed a remarkable increase in eosinophils. Chest radiographs revealed the presence of pleural effusion in all cases, and of pneumothorax in one. Pleural fluid obtained from two cases showed an increased number of eosinophils, an elevated LDH, and a decreased glucose level. Paragonimus westermani was determined in a positive serum antibody test. The patients were treated with praziquantel for 3 days at a daily dosage of 75 mg/kg and their symptoms were relieved, but one case needed additional treatment with praziquantel for 3 days at a daily dosage of 50 mg/kg because of sustained pleural effusion and a persistently high antibody titer. Most cases of paragonimiasis found in Japan have been sporadic and individual, but three cases occurring close to each other in both distance and time have recently been reported. Such multiple infections are likely to increase because of the gourmet food boom and the internationalization of eating habits. Paragonimiasis must be kept in mind in the differential diagnosis of cases of pleural effusion with eosinophilia. We would therefore like to emphasize the importance of the detection of parasite-specific antibodies and of careful history-taking from patients.     

不同剂量吡喹酮治疗曼氏裂头蚴感染小鼠的疗效观察

目的观察不同剂量吡喹酮对曼氏裂头蚴感染小鼠的疗效。方法156只昆明小鼠分2批感染,每只经口(灌胃)接种感染5条裂头蚴。第1批36只小鼠分为6组(每组6只),1-5组小鼠分别接种含不同浓度吡喹酮培养液中培养3d的裂头蚴,6组小鼠接种正常培养液中培养3d的裂头蚴,作为对照组;第2批120只小鼠分成12组(每组10只),分别接种青蛙或蝌蚪体内的裂头蚴,1-9组于感染后1周或5周用不同剂量的吡喹酮灌胃治疗,10-12组为对照组。各组小鼠于治疗结束后1周或2周剖杀,收集裂头蚴数并计算各组的平均检出虫数和减虫率。结果第1批小鼠接种在10-40μg/ml吡喹酮中培养3d的裂头蚴后,检出虫数与对照组相比差异无统计学意义(P0.05),接种在50μg/ml吡喹酮中培养3d的裂头蚴后,减虫率仅为16.60%,各剂量组减虫率之间差异无统计学意义(P0.05)。第2批小鼠感染青蛙体内裂头蚴1周后,用200、400、800mg/kg吡喹酮治疗后1周和2周的检出虫数与对照组相比,差异均无统计学意义(P均0.05),相同剂量组治疗后1周和2周后减虫率差异均无统计学意义(P均0.05);感染蝌蚪体内裂头蚴1周后,200、400mg/kg吡喹酮治疗后1周检出虫数与对照组相比差异均无统计学意义(P均0.05),800mg/kg治疗后1周减虫率为17.02%,各剂量组减虫率之间差异无统计学意义(P0.05)。小鼠感染青蛙体内裂头蚴5周后,用1200、1800mg/kg吡喹酮治疗1周和2周后,检出虫数差异无统计学意义(P0.05),但均明显高于对照组(P均0.05),相同剂量组减虫率之间的差异无统计学意义(P0.05)。结论吡喹酮(10～50μg/ml)在体外对裂头蚴无明显杀伤作用,但大剂量(1800mg/kg)灌胃时对裂头蚴感染小鼠疗效较好。