Evaluation of <i>Schistosoma japonicum</i> thioredoxin peroxidase-1 as a potential circulating antigen target for the diagnosis of Asian schistosomiasis

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Author(s)

    • MACALANDA Adrian Miki C.
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • LEONARDO Lydia R.
    • Department of Parasitology, College of Public Health, University of the Philippines Manila, Philippines
    • VILLACORTE Elena A.
    • Department of Parasitology, College of Public Health, University of the Philippines Manila, Philippines
    • RIVERA Pilarita T.
    • Department of Parasitology, College of Public Health, University of the Philippines Manila, Philippines
    • GOTO Yasuyuki
    • Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan
    • KAWAZU Shin-ichiro
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • ANGELES Jose Ma. M.
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • MOENDEG Kharleezelle J.
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • DANG Anh TM.
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • HIGUCHI Luna
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • INOUE Noboru
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • XUAN Xuenan
    • National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido 080-8555, Japan
    • KIRINOKI Masashi
    • Department of Tropical Medicine and Parasitology, Dokkyo Medical University, Mibu, Tochigi 321-0293, Japan
    • CHIGUSA Yuichi
    • Department of Tropical Medicine and Parasitology, Dokkyo Medical University, Mibu, Tochigi 321-0293, Japan

Abstract

<p>Asian schistosomiasis caused by <i>Schistosoma japonicum</i> is a serious zoonotic disease endemic in China, the Philippines and parts of Indonesia. Mass drug administration in endemic areas resulted to decline in disease severity and intensity. The low intensity of infection limits the use of current parasitological methods for schistosomiasis diagnosis. Detection of parasite circulating antigens might provide more informative result as it may indicate the true status of infection. In this study, <i>S. japonicum</i> thioredoxin peroxidase-1 (SjTPx-1) a 22 kDa secreted antioxidant enzyme expressed throughout the life stages of the parasite was evaluated for its potential use as a biomarker for schistosomiasis japonica infection. Rabbit polyclonal antibody and mouse monoclonal antibodies (mAbs) were raised against the recombinant SjTPx-1 (rSjTPx-1). The antibodies produced against the recombinant antigen was confirmed to detect the native SjTPx-1 in crude adult worm lysate. Likewise, the specific binding of mAbs to parasite TPx-1 and not to mammalian peroxiredoxin-1 orthologues was also confirmed. The double antibody sandwich ELISA developed in this study was able to detect at least 1 <i>n</i>g/m<i>l</i> of rSjTPx-1. In addition, this method was able to detect the antigen from all serum samples of experimentally infected rabbit and mice. The diagnostic potential of SjTPx-1 in human clinical samples was also evaluated, in which 4 out of 10 stool-confirmed serum samples had detectable levels of the antigen. The results suggest that SjTPx-1 can be a potential biomarker for Asian zoonotic schistosomiasis.</p>

Journal

  • Journal of Veterinary Medical Science

    Journal of Veterinary Medical Science 80(1), 156-163, 2018

    JAPANESE SOCIETY OF VETERINARY SCIENCE

Codes

  • NII Article ID (NAID)
    130006331072
  • Text Lang
    ENG
  • ISSN
    0916-7250
  • Data Source
    J-STAGE 
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