Assessment of t-cell immunity in women suffering from chronic toxoplasmosis

This study was performed to evaluate the effect of Toxoplasma gondii [T. gondii]on chosen indices of the immune response. This study involved 50 women infected with T. gondii[aged 20-45 years] proven have a chronic Toxoplasmosis [IgG positive and IgM negative]. The control group composed of 25 healthy women [aged 19 - 41 years][IgG and IgM negative] . All cases were subjected to the following :Full history taking, general and local Obstetrical and Gynecological examination, Complete blood picture, Erythrocyte Sedimentation rate [E.S.R],Renal function tests including blood urea and serum creatinine, Fasting and postprandial blood sugar, complete Liver function tests, abdominal ultrasonography and assess the rhesus factor[Rh] by agglutination test,Treponema palladium [Syphilis] by VDRLand by IHAT and agglutination test for Brucella abortus. Detection of specific anti-toxoplasma antibodies were assessed by IgG and IgM . Serum cytokines were quantitated using Sunrise ELISA reader M. code by commercially available ELISA kits for IFN y and for TNF-alpha, IL-4 and IL:10 . The results of this study showed that patients infected with T. gondii had increased production of the Th-1 cytokines involved IFN y and TNF-alpha ,The mean level +/-SD of IFN y in T. gondii infection was 134.2 +/- 6.98 pg/ml.,on the other hand the mean level in healthy subjects was 24 +/- 2.99 pg/ml. [P < 0.0001] The mean level +/- SD of TNF-a in T .gondii infection was 49.1 +/- 4.1 pg/ml and in healthy subjects was 13.2 +/- 2.00 pg/ml.[P < 0 .001]. Also there is increased production of Th2 cytokines involved IL-4 and IL-10 that responsible for humoral response as compared to controls. The mean level +/- SD of IL-4 in T. gondii infection was 28.6 +/- 3.82 pg/ml and the mean level in healthy subjects was 16.1 +/- 2.4.5pg/ml. [P < 0.01]. The mean level +/- SD of IL-10 in T. gondii infection was 23.2 +/- 3.38 pg/ml .,on the other the mean level of IL-10 in healthy subjects was 11.8 +/- 2.1 pg/ml [P < 0.01] .,that responsible for the cellular response'as compared to controls group. All these subjects were living in the same geographical area with more or less similar social and economical standard

Toxoplasma antibodies in complicated and uncomplicated pregnancy

This study was performed to evaluate the level of anti-toxoplasma antibodies among patients with miscarriage due to different causes as compared to un-complicated pregnant controls. It was carried out on 70 female patients with a history of complicated pregnancies and 30 ones with normal pregnancy as a control were selected, among those referred from Obstetrics and Gynaecology out-patient clinics and in-patient departments, AL-Azhar University Hospitals. Their ages ranged from 19 to 34 years . They were all Rh positive and free from brucellosis, syphilis and malignancy. Results showed that all controls [uncomplicated pregnancy] were IHA-IgG and ELISA-IgM negative. However, three of the controls [10%] were ELISA. IgG positive. As to the women with complicated pregnancy 59% were IHAT positive. When using ELISA, 57% were IgG positive and 43% were IgM positive. The results revealed a significant difference between the complicated cases and controls. The diagnosis of abortion, stillbirth, premature labour, or neonatal death due to toxoplasma infection needs careful and laborious evaluation. ELISA [IgG and IgM] is more sensitive and specific than IHAT. All premature born babies showed no signs of congenital toxoplasmosis. All these subjects were living in the same geographical area with more or less similar social and economical standard