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1.
各旋毛虫隔离种某些生物学特性研究   总被引:3,自引:0,他引:3  
通过对猪、犬旋毛虫和国际标准隔离种:旋毛形线虫(Trichinella spiralis)和本地毛形线虫(Trichinella nativa)的研究发现,猪旋毛虫和旋毛形线虫在小鼠隔肌中出现保姆细胞的时间比较早,分别于感染第16天和18天出现,第38天和36天所有幼虫都已形成保姆细胞,而犬旋毛虫和本地毛形线虫出现保姆细胞的时间较晚,于感染第20天和22天出现,第32天完全形成。猪旋毛虫和旋毛形线虫雌虫体外培养24小时平均产新生幼虫数分别为66.0和76.2,而犬旋毛虫和本地毛形线虫分别是28.8和22.0,前二者在雌虫体外产新生幼虫能力上明显高于后二者。研究结果表明,黑龙江猪旋毛虫为旋毛形线虫,犬旋毛虫为本地毛形线虫。  相似文献   

2.
旋毛虫各隔离种成虫肠期持续时间的研究   总被引:1,自引:0,他引:1  
以旋毛虫国际标准种:旋毛形线虫(Trichinella spiralis)和本地毛形线虫(Trichiella nativa)为对照,对黑龙江省猪、犬旋毛虫成虫肠期持续时间了比较研究,研究结果表明:4个旋毛虫隔离种均在感染后的6-8d成虫回收率最高;猪旋毛虫和Txspiralis成虫肠期持续时间分别为22d和20d,犬旋毛虫和T.nativa分别为16d和14d。研究结果揭示,黑龙江省猪旋毛虫相当于旋毛形线虫(Trichinella spiralis),犬旋毛虫相当于本地毛形线虫(Trichinella nativa)。  相似文献   

3.
旋毛虫各隔离种对小鼠的感染性研究   总被引:1,自引:0,他引:1  
比较研究了黑龙江省猪、犬旋毛虫及国际标准虫种旋毛形线虫(Trichinella spiralis)和本地毛形线虫(Trichinella nativa)对小鼠的感染性异同。结果表明,四者对小鼠的感染力存在着显著差异,猪旋毛虫和旋毛形线虫在小鼠体内的繁殖力指数(RCI)分别为121.01±7.80和149.86±7.47;而犬旋毛虫和本地毛形线虫的RCI分别为60.98±5.05和55.15±4.69。由实验结果可认为黑龙江省的猪旋毛虫相当于旋毛形线虫,而犬旋毛虫相当于本地毛形线虫。  相似文献   

4.
旋毛虫各隔离种成虫在小鼠肠道中的分布   总被引:2,自引:0,他引:2  
以旋毛虫国际标准种旋毛形线虫(Trichinella spiralis)和本地毛形线虫(Trichinella nativa)为对照,对黑龙江省猪、旋毛虫成虫在小鼠肠道中的分布进行了比较研究,研究结果表明:分别有76.3%,80.67%和86.18%,88.30%的猪旋毛虫、T.spiralis和旋毛虫、T.nativa分布于小肠的前、中段。说明猪旋毛虫、T.spiralis、犬旋毛虫、T.nativa的成虫均主要分布于小肠的前、中段,但犬旋毛虫、T.nativa、所占比例明显高于猪旋毛虫、T.spiralis,差异极显著(P<0.01)。研究结果揭示,黑龙江省猪旋毛虫相当于旋毛形线虫(Trichinella spiralis),犬旋毛虫相当于本地毛形线虫(Trichinella.native)。  相似文献   

5.
旋毛虫ITSⅡ区基因的克隆及其在分类学上的应用   总被引:5,自引:0,他引:5  
克隆了6个不同旋毛虫隔离种的核糖体RNA ITSⅡ区的基因片段,序列分析结果表明,黑龙江省猪旋毛虫和猫旋毛虫为旋毛形线虫(Trichinella spiralis);犬旋毛虫为本地毛形线虫(Trichinella nativa),与传统的分类结果基本一致,为传统的分类学方法提供了基础依据。  相似文献   

6.
旋毛虫各隔离种雌虫生殖能力的实验研究   总被引:4,自引:0,他引:4  
本试验对旋毛虫各隔离种雌虫体外产新生幼虫能力进行了研究。结果显示,猪旋毛虫和旋毛形线虫(Trichinella spiralis)雌虫体外培养24h平均产新生幼虫数分别为66.00±7.34和76.20±7.57,而犬旋毛虫和本地毛形线虫(Trichinella nativa)分别是28.80±4.30和22.00±3.22,前者在雌虫体外产幼虫能力上明显高于后者。研究结果表明,黑龙江猪旋毛虫相当于旋毛虫形线虫,犬旋毛虫相当于本地毛形线虫。  相似文献   

7.
旋毛虫各隔离种ITSⅡ区基因克隆和序列分析   总被引:1,自引:0,他引:1  
克隆了6个不同旋毛虫隔离种的核糖体RNAITSⅡ区的基因片段,序列分析结果表明,黑龙江省猪旋毛虫和猫旋毛虫为旋毛形线虫(Trichinella spiralis);犬旋毛虫为本地毛形线虫(Trichinella nativa)。结果与传统的分类结果基本一致,为传统的分类学方法提供了基础依据。  相似文献   

8.
旋毛虫各隔离种对猪的感染性和低温耐受性的研究   总被引:5,自引:0,他引:5  
用消化法所得的猪旋毛虫、犬旋毛虫、旋毛形线虫(Trichinella spiralis)和本地毛形线虫(Trichinella nati-va)分别感染猪和小鼠,以观察其感染性,同时在-22℃和-32℃条件下对其进行冷冻试验。结果表明:4个旋毛虫隔离种对猪的感染性存在着明显差异,猪旋毛虫和T.spiralis对猪易感,其繁殖力指数(RCI)分别为385.68±41.51和300.55±12.45;而犬旋毛虫和T.nativa对猪不易感,RCI分别是0.064±0.031和0.033±0.033。猪旋毛虫和旋毛形线虫不耐低温,在猪体内-32℃、24 h,-22℃、72 h;在小鼠体内-32℃、12 h即全部死亡。而犬旋毛虫和本地毛形线虫对低温抵抗力较强,在猪体内-32℃、72h,-22℃、192 h;在小鼠体内-32℃、48 h才失去感染性。结果揭示:黑龙江省猪旋毛虫相当于旋毛形线虫,犬旋毛虫相当于本地毛形线虫;犬旋毛虫和T.nativa很难通过猪的感染而对人体健康构成威胁。  相似文献   

9.
通过对猪、犬旋毛虫和国际标准隔离:旋毛形线虫(Trichinella spiralis)和本地毛形线虫(Trichinella nativa)的研究发现,猪旋志虫和旋毛形线虫在小鼠膈肌中出现保姆细胞的时间比较早,分别于感染第16d和18d出现,第38d和36d所有幼虫都已形成保姆细胞,而 虫和本地毛形线虫出现保姆细胞的时间较晚,于感染第20d和22d出现,第32d完成形成。猪旋毛虫和旋毛形线虫雌虫  相似文献   

10.
旋毛虫各隔离种对低温耐受性的研究   总被引:3,自引:0,他引:3  
用来自哈尔滨地区猪、犬体内的旋毛虫和国际标准虫株旋毛形线虫(Trichinella spiralis)、本地毛形线虫(Trichinella nativa)同时感染猪,在-22℃和-32℃条件下对感染了各旋毛虫的猪肉进行冷冻性试验,结果表明:哈尔滨地区猪旋毛虫和T.spiralis不耐低温,-32℃冷冻12h,-22℃冷冻48h全部死亡;而犬旋毛和T.nativa对低温抵抗力较强,-32℃、72h,-22℃、168h才全部死亡。  相似文献   

11.
猪、犬旋毛虫DNA限制性片段长度多态性分析   总被引:3,自引:0,他引:3  
以旋毛虫国际标准虫种T.spidais和T.nativa作对照,应用DNA限制性片段长度多态性(RFLP)技术对黑龙江省猪、大旋毛虫进行虫种鉴定。结果显示:猪旋虫和T.spirlais酶切图谱相同;犬旋毛虫和T.nativa酶谱一致,结果提示,黑龙江猪旋毛虫为Tspiralis,犬旋毛虫为T.nativa。  相似文献   

12.
旋毛虫病McAb快速ELISA诊断盒的应用研究   总被引:3,自引:0,他引:3  
应用McAb 快速ELISA 诊断盒,对感染了4 个旋毛虫隔离种的猪定期检测其血清中抗体出现情况。结果,猪旋毛虫和旋毛形线虫(T.spiralis)在感染24 d 后、犬旋毛虫和本地毛形线虫( T.nativa)31 d 后,可在猪血清中检出抗体;在抗体出现时间上前二者较后二者早7 d 左右。  相似文献   

13.
用消化法所得的猪旋毛虫、犬旋毛虫、旋毛形线虫 (Trichinellaspiralis)和本地毛形线虫 (Trichinellanativa)分别感染健康猪。结果表明 :4个旋毛虫隔离种对猪的感染性存在着明显差异 ,猪旋毛虫和T .spiralis对猪易感 ,其繁殖力指数 (RCI)分别为 385 .6 8± 41.5 1和 30 0 .5 5± 12 .45 ;而犬旋毛虫和T .nativa对猪不易感 ,RCI分别是 0 .0 6 4± 0 .0 31和 0 .0 33± 0 .0 33。结果揭示黑龙江省猪旋毛虫相当于T .spiralis,犬旋毛虫相当于T .nativa ;犬旋毛虫和T .nativa很难通过猪的感染而对人体健康构成威胁。  相似文献   

14.
通过对 4个毛形线虫隔离种保姆细胞形成时间的研究 ,发现分离自中国猪的旋毛形线虫和波兰猪旋毛形线虫 (Trichinella spiralis)在小鼠膈肌中出现保姆细胞的时间比较早 ,分别于感染第 16天和 18天出现 ,第 36天和 38天所有幼虫都已形成保姆细胞 ,而分离自犬的毛形线虫和熊的本地毛形线虫 (Trichinella nativa)出现保姆细胞的时间较晚 ,于感染第 2 0天和 2 2天出现 ,第 32天完全形成。结果表明 ,中国猪旋毛形线虫与波兰猪旋毛形线虫 ,犬毛形线虫与本地毛形线虫分别是同一旋毛虫隔离种  相似文献   

15.
旋毛虫各隔离种嗜酸性粒细胞变化的研究   总被引:2,自引:0,他引:2  
旋毛虫各隔离种感染猪后,其血液中嗜酸性粒细胞显著增多,而其它各类细胞无明显变化,嗜酸性粒细胞于感染后7d开始升高,16d左右达最高峰,以后逐渐下降趋势;猪旋毛虫和旋毛形线虫的嗜酸性粒细胞数量始终高于犬旋毛虫和本地毛形线虫,嗜酸性粒细胞增多可作为早期诊断旋毛虫病的重要临床指标之一。  相似文献   

16.
Inoculation of swine with a sylvatic isolate of Trichinella spiralis, designated T s nativa, resulted in low numbers of muscle larvae, compared with muscle larvae accumulation in swine inoculated with a pig type of T s spiralis. Despite low infectivity of T s nativa for swine, primary inoculation resulted in high levels of immunity against challenge infection with T s spiralis. This immunity was expressed in accelerated expulsion of challenge adults from the intestine and reduced numbers of muscle larvae. Pigs inoculated with T s nativa developed cellular and humoral responses similar to those in pigs inoculated with T s spiralis. However, in immunoblots, sera from pigs inoculated with T s nativa recognized additional proteins in muscle larvae excretory-secretory (ES) products, compared with sera from pigs inoculated with T s spiralis. Active immunization of pigs with ES products from T s nativa resulted in numerically higher, but not significantly different levels of immunity, compared with pigs immunized with ES from T s spiralis. The highest levels of immunity were obtained in pigs immunized with a T s spiralis newborn larval extract. The combination of ES products and newborn larval extract did not result in additive levels of immunity. These results indicate that the major immune effector response to Trichinella sp in pigs is against the newborn larvae, regardless of the genetic type of Trichinella sp.  相似文献   

17.
Enzyme immunoassays using the triple antibody enzyme linked immunosorbent assay (ELISA) with both Trichinella spiralis spiralis and T. spiralis nativa excretory-secretory (ES) antigens and a commercial Trichinella spiralis enzyme immunoassay test kit were carried out on sera from pigs that were infected with light, moderate and high doses of infective T. spiralis spiralis and T. spiralis nativa respectively. Seroconversion occurred in all pigs given infective Trichinella larvae although no trichinae were recovered from pigs given T. spiralis nativa larvae and examined between days 92 and 99 postinfection by pepsin digestion. Anti-Trichinella antibodies were detected in pigs infected with T. spiralis spiralis and T. spiralis nativa by ELISA using either the homologous or heterologous ES antigen. The commercial Trichinella spiralis enzyme immunoassay test kit also detected anti-Trichinella antibodies in both the T. spiralis spiralis and T. spiralis nativa infected pigs. The commercial test kit did not appear to be as sensitive as the triple antibody ELISA since it usually took two to three days longer for seroconversion to be detected by the former procedure. Finally seroconversion occurred more rapidly in swine infected with T. spiralis spiralis than with pigs receiving comparable doses of T. spiralis nativa.  相似文献   

18.
The infectivity of Trichinella spiralis nativa isolates from widely separated geographic areas of Canada was determined by feeding infected musculature to swine, laboratory rats and carnivores (cats, foxes, ferrets). Low infectivity for swine and rats and high infectivity for carnivores were observed. Light infections were established in four of 16 swine examined between 25 and 53 days postinfection. Feeding of infected porcine musculature to ferrets demonstrated that Trichinella spiralis nativa can be passaged through swine even though the infectivity rate is low.  相似文献   

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