Korean J Parasitol.  2017 Dec;55(6):607-611. 10.3347/kjp.2017.55.6.607.

Comparison of Placenta PCR and Maternal Serology of Aborted Women for Detection of Toxoplasma gondii in Ardabil, Iran

Affiliations
  • 1Department of Internal Medicine, Ardabil University of Medical Sciences, Ardabil, Iran.
  • 2Department of Parasitology and Mycology, Faculty of Specialized Veterinary Science, Islamic Azad University, Science and Research Branch, Tehran, Iran. rzshhbz@yahoo.com
  • 3Department of Obstetrics and Gynecological, Ardabil University of Medical Sciences, Ardabil, Iran.
  • 4Ardabil University of Medical Sciences, Ardabil, Iran.
  • 5Department of Microbiology, Ardabil University of Medical Sciences, Ardabil, Iran.

Abstract

Primary maternal infection with toxoplasmosis during pregnancy is frequently associated with transplacental transmission of the parasite to the fetus. This study was conducted to test the utility of PCR assay to detect recent infections with Toxoplasma in aborted women at various gestational ages who referred to Obstetrics and Gynecology Department of Alavi Hospital in Ardabil during 2014 and 2016. Two hundred women with a history of single or repeated abortion were investigated in this study. Blood samples were tested for specific anti-Toxoplasma IgM and IgG antibodies by ELISA. According to the results, 53.5% of the women under study were positive for anti-Toxoplasma antibodies: 4.0% of them had IgM, 43.0% had IgG, and 6.5% had both IgM and IgG. Subsequently, Nested-PCR analysis was used to detect T. gondii DNA in the placenta of subjects. In 10.5% of the women, the results were positive for 529 bp element of T. gondii. Among them, 5 (23.8%) cases were IgM positive, 1 (4.8%) case was IgG positive, and 11 (52.4%) were both IgM and IgG positive. In 4 (19.0%) patients, none of the antibodies were found to be positive. In total, 16 patients had positive results in both ELISA and PCR methods, and 174 cases had negative results for new infection. The findings of this study revealed that T. gondii might be one of the significant factors leading to abortion, and that the analysis of placenta can be important in order to achieve increased detection sensitivity.

Keyword

Toxoplasma gondii; abortion; blood; nested-PCR; ELISA; Iran

MeSH Terms

Antibodies
DNA
Enzyme-Linked Immunosorbent Assay
Female
Fetus
Gestational Age
Gynecology
Humans
Immunoglobulin G
Immunoglobulin M
Iran*
Obstetrics
Parasites
Placenta*
Polymerase Chain Reaction*
Pregnancy
Toxoplasma*
Toxoplasmosis
Antibodies
DNA
Immunoglobulin G
Immunoglobulin M
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