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  • Title: Changes in lymphocyte subsets during pregnancy and post-partum in cases of beginning eclampsia.
    Author: Kühnert M, Schmidt S.
    Journal: J Perinat Med; 2000; 28(5):389-98. PubMed ID: 11125930.
    Abstract:
    AIMS: The goal of the present retrospective study was to examine the peripheral blood lymphocytes for expression of phenotypic and activation markers concerning the development of hypertension in pregnancy. METHODS: 16 women (aged 25-43 years; mean 35.1) developing hypertension in the third trimester (week 25-34) have had blood samples taken in the first (< 14 weeks), the second (week 14-23), the third trimester (week 24-35), in late pregnancy (week 36-termination of pregnancy) and within 1 week post-partum, The control group consisted of 16 age-matched pregnant healthy women, who underwent the same regime. All blood samples were taken in the morning, stored at room temperature and stained within 6 hours and measured within 24 hours. Kruskal-Wallis analysis of variance between both groups was done with multiple comparison according to Dunn. RESULTS: Comparing both groups, the total white cell count was significantly increased in all pregnancies and post-partum. In case of hypertension in pregnancy the cell numbers of suppressor/cytotoxic (CD 8+) and CD 56(+)-activated T cells showed a significant increase in the first trimester (< 14 weeks) [p < 0.05] and decreased thereafter to normal values. In the second trimester (week 14-23) helper/inducer lymphocytes and CD 56+/CD 3+ lymphocytes decreased in case of pre-ecclampsia and cytotoxic lymphocytes elevated [p < 0.05]. In the third trimester (week 24-35) there was no difference in both study groups and in late pregnancy (week 36-termination) there were only small differences without statistical significance. Within 1 week postnatal the value of Il-2 receptor T lymphocytes decreased in the group of pre-eclampsia in comparison to normal pregnancies [p < 0.05]. CONCLUSIONS: Regarding the major changes in activated T cells in both study groups no specific pattern of lymphocyte subsets in case of pre-eclampsia could be found in comparison to healthy pregnant women. Further investigations should focus on functional activation and/or suppression of the cellular immune system. Perhaps this could lead to a screening test for pre-eclampsia in future, which is non-invasive for the patient and economic for our social community because it might reduce medical costs.
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