Temperature and Time Dependent Variations in Anti-Toxoplasma gondii Antibody Titrations in Serum Samples

Abstract

This study aimed to determine the temperature- and time-dependent variations in the anti-Toxoplasma gondii (T. gondii) antibody titres in serum samples collected from T. gondii-infected patients. During May 2017-February 2018, five serum samples (stored at different time periods and conditions) from pregnant or non-pregnant women aged ≥18 years who were infected with T. gondii and had applied to our Parasitology Department of Hafsa Sultan Hospital, Manisa Celal Bayar University, were investigated for the anti-T. gondii IgG antibody levels by enzyme linked fluorescent assay (ELFA). The serum samples of five female volunteers who were infected with T. gondii that were stored at room temperature (20/25 °C), in a cargo package (+4/+8 °C), in a refrigerator (+4 °C), in a deep freezer (-16/-20 °C) and in an incubator (+37 °C) were tested at 0, 24, 48 and 72 hours after infection with the ELFA test. No statistically significant difference was observed in the anti-T. gondii IgG antibody titres (p>0.05). The results obtained from the patients infected with T. gondii at different times and conditions of up to 72 hours were not significantly affected clinically. Hence, more comprehensive data can be obtained by increasing the number of patients and storing the serum samples for more than 72 hours.