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  • 1. Bachmayer, Nora
    et al.
    Sohlberg, Ebba
    Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
    Sundström, Yvonne
    Hamad, Rangeen Rafik
    Berg, Louise
    Bremme, Katarina
    Sverremark-Ekström, Eva
    Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
    Women with pre-eclampsia have an altered NKG2A and NKG2C receptor expression on peripheral blood natural killer cells.2009In: American Journal of Reproductive Immunology and Microbiology, ISSN 8755-8920, Vol. 62, no 3, p. 147-57Article in journal (Refereed)
    Abstract [en]

    PROBLEM: Preeclampsia, a pregnancy disorder, is associated with exaggerated inflammation and increased serum monokines. Uterine natural killer (NK) cells are implicated in preeclampsia pathology, but little is known regarding peripheral NK cells in the disease. METHOD OF STUDY: We examined blood NK cells at delivery in women with preeclampsia, in healthy pregnant women and in healthy non-pregnant blood donors as a reference. RESULTS: Although the percentages of both NKG2A- and NKG2C-positive NK cells were normal in preeclamptic women, the levels of NKG2A and NKG2C on NK cells were significantly up-regulated in these women. In vitro stimulation of PBMCs from healthy pregnant women and blood donors with monokines resulted in increased percentage of NKG2A(+) NK cells and increased NKG2A levels, while levels of NKG2C were decreased. CONCLUSIONS: Our results suggest that the peripheral NK-cell pool is skewed in preeclampsia and possibly under the influence of monokines like interleukin (IL)-15 and IL-12.

  • 2. Fransson, Emma
    et al.
    Dubicke, Aurelija
    Bystrom, Birgitta
    Ekman-Ordeberg, Gunvor
    Hjelmstedt, Anna
    Lekander, Mats
    Stockholm University, Faculty of Social Sciences, Stress Research Institute.
    Negative emotions and cytokines in maternal and cord serum at preterm birth2012In: American Journal of Reproductive Immunology and Microbiology, ISSN 8755-8920, Vol. 67, no 6, p. 506-514Article in journal (Refereed)
    Abstract [en]

    Problem This study investigates whether affectivity differs between mothers delivering preterm and term and whether maternal and umbilical cord serum cytokines differ between these groups. Further, whether there are associations between mothers emotions and maternal and cord cytokines at preterm and term birth. Method of study Twenty-seven mothers delivering preterm and 37 mothers delivering at term reported positive/negative affect and previous depressive symptoms during pregnancy. Blood samples from mothers in labor and cord samples (23 preterm and 33 term) were analyzed for cytokines. Results Maternal IL-8 was lower at preterm delivery compared with term. In the preterm group only, associations were found between negative emotions and maternal IL-6, IL-8 and cord IL-6, IL-8, IL-10, IL-13, and IL-18. Conclusion The findings indicate associations in preterm delivery between negative emotions and both maternal and neonate immune activity. Future studies should investigate whether such associations are part of the etiology of preterm delivery.

  • 3. Rizzo, Roberta
    et al.
    Stignani, Marina
    Amoudruz, Petra
    Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
    Nilsson, Caroline
    Melchiorri, Loredana
    Baricordi, Olavio
    Sverremark-Ekström, Eva
    Stockholm University, Faculty of Science, The Wenner-Gren Institute , Immunology.
    Allergic women have reduced sHLA-G plasma levels at delivery.2009In: American Journal of Reproductive Immunology and Microbiology, ISSN 8755-8920, Vol. 61, no 5, p. 368-76Article in journal (Refereed)
    Abstract [en]

    PROBLEM: HLA-G antigen maintains a tolerogenic condition at the foeto-maternal interface, counteracts inflammation in autoimmune diseases and soluble HLA-G (sHLA-G) levels decrease in allergic-asthmatics. Taking into consideration these findings, we analyzed if sHLA-G and interleukin-10 (IL-10) could be influenced by pregnancy and labour in allergic and non-allergic women. METHOD OF STUDY: sHLA-G isoforms and IL-10 levels were determined in the plasma samples of 43 women (15 non-allergic, 28 allergic) during third trimester, at delivery and 2 years after pregnancy by immunoenzymatic assays. RESULTS: A significant increase in sHLA-G and IL-10 levels was documented at delivery in both allergic and non-allergic women. Allergic women showed lower sHLA-G concentrations. sHLA-G1 was evidenced as the predominant plasma isoform. CONCLUSION: The data showed increased sHLA-G and IL-10 concentrations at delivery, regardless of the allergic status. The sHLA-G1 isoform is mainly responsible for the increased sHLA-G levels at delivery.

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