Development of an Immunochromatographic Test Based on Rhoptry Protein 14 for Serological Detection of Toxoplasma gondii Infection in Swine

被引：4

作者：

Yang, Yimin ^{[1
]}

Huang, Yechuan ^{[1
]}

Zhao, Xianfeng ^{[2
]}

Lin, Mi ^{[1
]}

Chen, Lulu ^{[1
]}

Zhao, Mingxiu ^{[1
]}

Chen, Xueqiu ^{[1
]}

Yang, Yi ^{[1
]}

Ma, Guangxu ^{[1
]}

Yao, Chaoqun ^{[3
,4
]}

Huang, Siyang ^{[5
]}

Du, Aifang ^{[1
]}

机构：

[1] Zhejiang Univ, Coll Anim Sci, Inst Prevent Vet Med, Zhejiang Prov Key Lab Prevent Vet Med, Hangzhou 310058, Peoples R China

[2] Anim & Plant Inspect & Quarantine Technol Ctr She, Shenzhen 518045, Peoples R China

[3] Ross Univ, Sch Vet Med, POB 334, Basseterre, St Kitts & Nevi

[4] Ross Univ, Sch Vet Med, Hlth Ctr Zoonoses & Trop Vet Med 1, POB 334, Basseterre, St Kitts & Nevi

[5] Yangzhou Univ, Coll Vet Med, Jiangsu Coinnovat Ctr Prevent & Control Important, Inst Comparat Med,Jiangsu Key Lab Zoonosis, Yangzhou 225009, Jiangsu, Peoples R China

来源：

ANIMALS | 2022年 / 12卷 / 15期

基金：

中国国家自然科学基金;

关键词：

Toxoplasma gondii; immunochromatographic test; TgROP14; swine; LINKED-IMMUNOSORBENT-ASSAY; RECOMBINANT ANTIGENS; MONOCLONAL-ANTIBODIES; SEROPREVALENCE; SERODIAGNOSIS; DIAGNOSIS; PIGS; ANIMALS; HISTORY;

D O I：

10.3390/ani12151929

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Toxoplasma gondii, a worldwide distributed apicomplexan protozoan, can infect almost all warm-blooded animals and may cause toxoplasmosis. In order to provide a point-of-care detection method for T. gondii infection, an immunochromatographic test (ICT) was established. The proposed test uses recombinant T. gondii rhoptry protein 14 (ROP14) conjugated with 20 nm gold particles, recombinant protein A as the detection line and monoclonal antibody TgROP14-5D5 as the control line. The specificity, sensitivity, positive predictive value, negative predictive value and stability of this new ICT were evaluated. rTgROP14 was specifically recognized by positive serum of T. gondii but not negative serum. mAb TgROP14-5D5 showed higher specific recognition of T. gondii antigens and was therefore selected for subsequent colloidal gold strip construction. The new ICT based on TgROP14 exhibited good diagnostic performance with high specificity (86.9%) and sensitivity (90.9%) using IHA as a "reference standard". Among 436 field porcine sera, ICT and IHA detected 134 (30.7%) and 99 (22.7%) positive samples, respectively. The relative agreement was 87.8%. These data indicate that this new ICT based on TgROP14 is a suitable candidate for routine testing of T. gondii in the field.

引用

页数：12

共 42 条

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