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All Journal Jurnal Sain Veteriner Jurnal Kedokteran Hewan
Fong, Sulinawati
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Biochemistry, Genetics & Molecular Biology Immunology & microbiology Medicine & Pharmacology Veterinary

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Comparison of Morphology and Protein Profile of Acetone and PBS-Fixed Toxoplasma gondii Tachyzoites for Detection of IgG and IgM Seropositivity VALINATA, SISCA; Cahyaningsih, Umi; Nugraha, Arifin Budiman; Kurniawati, Dyah Ayu; Desem, Muhammad Ibrahim; Fong, Sulinawati
Jurnal Sain Veteriner Vol 43, No 1 (2025): April
Publisher : Faculty of Veterinary Medicine, Universitas Gadjah Mada bekerjasama dengan PB PDHI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/jsv.103155

Abstract

Toxoplasma gondii is an obligate intracellular protozoan that causes zoonotic diseases. The prevalence of toxoplasmosis in humans in Indonesia ranges from 9.7-70%. The parasite is difficult to detect in tissues; therefore, serological testing is the most common method for detecting antibodies against Toxoplasma. Antibodies are often used as the testing criteria for IgG and IgM antibodies. Previous research has shown that agglutination testing with acetone-fixed tachyzoites was only positive for acute infection. The aim of this study was to examine microscopic changes in acetone-fixed tachyzoites, determine their ability to detect IgG and IgM seropositivity, and detect specific proteins for IgG and IgM against toxoplasmosis. Tachyzoites were fixed with acetone (A) and PBS (P). After fixation, tachyzoites were prepared to observe the morphology and sonicated to obtain Soluble Toxoplasma Antigen (STA). STA was then subjected to SDS page and western blotting. The addition of aseton resulted in morphological and protein changes. Although changes occur, acetone-fixed tachyzoites can still react with IgG and IgM seropositivity. Protein bands that can be used as IgG seropositive markers in western blot testing are bands measuring 20, 24, 27, 73, and 110 kDa, and the combination of acetone fixation with anti-goat IgM conjugate will result in seropositive bands.
COMPARISON OF DIFFERENT COMMERCIAL SEROLOGY KITS FOR THE DETERMINATION OF SEROPOSITIVE TOXOPLASMOSIS IN CATTLE IN INDONESIA Subekti, Didik T; Valinata, Sisca; Fong, Sulinawati
Jurnal Kedokteran Hewan Vol 15, No 4 (2021): December
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21157/j.ked.hewan.v15i4.21716

Abstract

This research aims to explain the evaluation of the differences in four commercial kits for the detection of serological toxoplasmosis used in Indonesia. The results of the study found that the toxoplasmosis seropositivity determined by the four commercial kits showed a significant difference (P0.05). Seropositive toxoplasmosis obtained using Pastorex, Toxotest, IDScreen, and Toxo Ab were 35.12%, 60.12%, 26.19%, and 10.12% respectively. IDScreen had a good agreement with Toxo Ab (Gwet's AC1= 0.623) and a moderate agreement with Pastorex (Gwet's AC1= 0.494-0.511). Toxotest had a low agreement with three commercial kits (Gwet's AC1= 0.2) but had a moderate agreement with western blotting (WB) and modified agglutination test (MAT) (Gwet's AC1= 0.458-0.557).
Co-Authors Desem, Muhammad Ibrahim Didik T Subekti Kurniawati, Dyah Ayu Nugraha, Arifin Budiman Umi Cahyaningsih Valinata, Sisca