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nk cell miscarriage

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https://www.readbyqxmd.com/read/29059580/characteristics-of-peripheral-blood-nk-and-nkt-like-cells-in-euthyroid-and-subclinical-hypothyroid-women-with-thyroid-autoimmunity-experiencing-reproductive-failure
#1
Eva Miko, Matyas Meggyes, Katalin Doba, Nelli Farkas, Barbara Bogar, Aliz Barakonyi, Laszlo Szereday, Julia Szekeres-Bartho, Emese Mezosi
Thyroid autoimmunity (TAI) appears to play a crucial role in female infertility, recurrent pregnancy loss and IVF failure. Thyroid autoantibodies against thyroid peroxidase and thyroglobulin have been shown to represent an independent risk factor for infertility and miscarriage. Moreover, thyroxin hormone administration reduces the risk of obstetrical complications in TAI positive women. The aim of our present study was to investigate the immunological background of female infertility and recurrent pregnancy loss in euthyroid and subclinical hypothyroid women with TAI focusing on innate immunity...
September 28, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/29056235/maternal-effector-t-cells-within-decidua-the-adaptive-immune-response-to-pregnancy
#2
D Lissauer, M D Kilby, P Moss
In human pregnancy the maternal immune system plays a critical role in the regulation of many aspects of human reproduction including implantation, placentation and defence against infection. Interest has been focussed on the role of uterine natural killer cells (uNK) in the maternal decidua whereas effector CD4+ and CD8+ T cells have received much less attention despite the observation that they represent a major proportion of decidual leucocytes in the latter phase of pregnancy. A range of recent studies have demonstrated that human decidual T cells are highly differentiated, express a range of cytokines and cytotoxic markers, and demonstrate a unique transcriptional profile characterized by high level expression of genes involved in interferon-signalling...
September 8, 2017: Placenta
https://www.readbyqxmd.com/read/29040297/decreased-nk-cell-immunity-in-kidney-transplant-recipients-late-post-transplant-and-increased-nk-cell-immunity-in-patients-with-recurrent-miscarriage
#3
Li Zhu, Mostafa Aly, Haihao Wang, Hristos Karakizlis, Rolf Weimer, Christian Morath, Ruben Jeremias Kuon, Bettina Toth, Gerhard Opelz, Volker Daniel
BACKGROUND: There is evidence that NK-cell reactivity might affect graft outcome in transplant recipients and pregnancy in women. METHOD: NK-cell subsets were determined in whole blood using eight-colour-fluorescence flow cytometry in patients before and after renal transplantation, patients with recurrent miscarriage (RM) and healthy controls (HC). RESULTS: Patients late post-transplant (late-Tx) with functioning renal transplants showed abnormally low CD56dimCD16+ NK-cells containing both perforin and granzyme (vs HC p = 0...
2017: PloS One
https://www.readbyqxmd.com/read/29020784/-screening-of-endometrial-nk-cells-in-selected-infertile-patients-first-part-methods-and-current-results
#4
Z Ulčová-Gallová, M Pešek, P Chaloupka, P Mukešnábl, M Haschová, P Losan, K Bibková, Z Mičanová, J Cibulka
INTRODUCTION: Generaly, natural killer cells (NK cells) are among the most important cells of our immune defense system. They are present in the blood, decidua but also in secretory endometrium. OBJECTIVE: We investigate an association between high density of NK cells CD56+ and NK cells CD16+ into blood and secretory endometrium in patients with up to now unexplained recurrent miscarriage. At the same time, we focused on diagnosis of antiphospholipid syndrome, congenital trombophilic factors, stress factor, and lenght of hormonal contraception before conception...
2017: Ceská Gynekologie
https://www.readbyqxmd.com/read/28951537/tim-3-signaling-in-peripheral-nk-cells-promotes-maternal-fetal-immune-tolerance-and-alleviates-pregnancy-loss
#5
Yanhong Li, Jiayuan Zhang, Di Zhang, Xiaowu Hong, Yu Tao, Songcun Wang, Yuanyuan Xu, Hailan Piao, Weijie Yin, Min Yu, Yin Zhang, Qiang Fu, Dajin Li, Xing Chang, Meirong Du
Pregnancy loss occurs in about 15% of clinically recognized pregnancies, and defective maternal-fetal immune tolerance contributes to more than 50% of these events. We found that signaling by the type I membrane protein T cell immunoglobulin and mucin-containing protein 3 (Tim-3) in natural killer (NK) cells had an essential protective role during early pregnancy. Tim-3 on peripheral NK (pNK) cells was transiently increased in abundance during the first trimester of pregnancy, which depended on interleukin-4 (IL-4)-signal transducer and activator of transcription 6 (STAT6) and progesterone signaling...
September 26, 2017: Science Signaling
https://www.readbyqxmd.com/read/28935491/measurement-of-uterine-natural-killer-cell-percentage-in-the%C3%A2-periimplantation-endometrium-from-fertile-women-and-women-with-recurrent-reproductive-failure-establishment-of-a-reference-range
#6
Xiaoyan Chen, Najat Mariee, Lingming Jiang, Yingyu Liu, Chi Chiu Wang, Tin Chiu Li, Susan Laird
BACKGROUND: Uterine natural killer cells are the major leukocytes present in the periimplantation endometrium. Previous studies have found controversial differences in uterine natural killer cell percentage in women with recurrent reproductive failure compared with fertile controls. OBJECTIVE: We sought to compare the uterine natural killer cell percentage in women with recurrent reproductive failure and fertile controls. STUDY DESIGN: This was a retrospective study carried out in university hospitals...
September 19, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28923404/hla-g-coding-region-polymorphism-is-skewed-in-autistic-spectrum-disorders
#7
Franca R Guerini, Elisabetta Bolognesi, Matteo Chiappedi, Enrico Ripamonti, Alessandro Ghezzo, Michela Zanette, Stefano Sotgiu, Maria Martina Mensi, Alessandra Carta, Maria Paola Canevini, Milena Zanzottera, Cristina Agliardi, Andrea S Costa, Umberto Balottin, Mario Clerici
Different isoforms of HLA-G protein are endowed with a differential ability to induce allogenic tolerance during pregnancy. As prenatal immune activation is suggested to play a role in the onset of autistic spectrum disorders (ASD), we evaluated HLA G*01:01-*01:06 allelic polymorphism in a cohort of Italian children affected by ASD (N=111) their mothers (N=81), and their healthy siblings (N=39). DNA sequencing analysis of HLA-G exon 2, 3 and 4 was used to obtain HLA-G allelic frequencies; alleles distribution was compared with that of two control groups of Caucasoid couples of multiparous women and their partners from Brazil and Denmark...
January 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28921750/successful-treatment-with-intrauterine-delivery-of-dexamethasone-for-repeated-implantation-failure
#8
Tao Zhang, Chunyu Huang, Yan Du, Ruochun Lian, Meilan Mo, Yong Zeng, Gil Mor
PROBLEM: Effective therapy for endometrial receptivity of patients with repeated embryo implantation failure (RIF) is far undeveloped. Whether intrauterine perfusion of dexamethasone (DXM), local administration of drugs with less systematic side-effects, benefit for embryo implantation by suppressing uterine NK (uNK) cells to improve endometrial receptivity remains unknown. METHOD OF STUDY: Women with RIF were analyzed for the correlation between the percentage of uNK cells during implantation window and following clinical pregnancy rate to determine the appropriate range of uNK for embryo implantation...
December 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28794456/activated-nk-cells-cause-placental-dysfunction-and-miscarriages-in-fetal-alloimmune-thrombocytopenia
#9
Issaka Yougbaré, Wei-She Tai, Darko Zdravic, Brigitta Elaine Oswald, Sean Lang, Guangheng Zhu, Howard Leong-Poi, Dawei Qu, Lisa Yu, Caroline Dunk, Jianhong Zhang, John G Sled, Stephen J Lye, Jelena Brkić, Chun Peng, Petter Höglund, B Anne Croy, S Lee Adamson, Xiao-Yan Wen, Duncan J Stewart, John Freedman, Heyu Ni
Miscarriage and intrauterine growth restriction (IUGR) are devastating complications in fetal/neonatal alloimmune thrombocytopenia (FNAIT). We previously reported the mechanisms for bleeding diatheses, but it is unknown whether placental, decidual immune cells or other abnormalities at the maternal-fetal interface contribute to FNAIT. Here we show that maternal immune responses to fetal platelet antigens cause miscarriage and IUGR that are associated with vascular and immune pathologies in murine FNAIT models...
August 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28702027/decreased-human-leukocyte-antigen-g-expression-by-mir-133a-contributes-to-impairment-of-proinvasion-and-proangiogenesis-functions-of-decidual-nk-cells
#10
Wenwei Guo, Liang Fang, Bo Li, Xifeng Xiao, Shuqiang Chen, Jun Wang, Fang Yang, Lihua Chen, Xiaohong Wang
Human leukocyte antigen (HLA)-G plays a crucial role in conferring fetal-maternal tolerance and ensuring a successful pregnancy. CD56(bright) natural killer (NK) cells accumulate at the maternal decidua in large numbers during pregnancy and are found in direct contact with fetal trophoblasts. There are increasing evidences that decidual NK (dNK) cells are crucial for pregnancy. However, the regulation of dNK cells is mostly unknown. Here, we provide evidences that the secretion function of dNK cells in recurrent spontaneous abortion was impaired, which led to the impairment of the proinvasion and proangiogenesis functions of dNK cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28639334/uterine-natural-killer-cells-in-patients-with-idiopathic-recurrent-miscarriage
#11
Ruben-J Kuon, Maja Weber, Julia Heger, Isabel Santillán, Kilian Vomstein, Christin Bär, Thomas Strowitzki, Udo R Markert, Bettina Toth
PROBLEM: Uterine natural killer (uNK) cells are major players during implantation and early pregnancy. The aim of our study was to analyze uNK cell concentration in the endometrium of idiopathic recurrent miscarriage (iRM) patients and fertile controls. METHOD OF STUDY: Out of n=130 couples with ≥3 consecutive, clinical RM screened according to a standardized diagnostic protocol, n=58 patients with iRM were identified. Endometrial biopsies were investigated in patients and n=17 fertile women (controls) via immunohistochemistry...
October 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28501365/why-natural-killer-cells-are-not-enough-a-further-understanding-of-killer-immunoglobulin-like-receptor-and-human-leukocyte-antigen
#12
REVIEW
Diana Alecsandru, Juan A García-Velasco
The immune system's role in recurrent reproductive failure is a controversial issue in assisted reproduction. Most studies into immune system implication in reproduction have focused on finding markers of peripheral blood and less on the uterine environment. Peripheral blood natural killer cells have become an "immune study core" for women with recurrent miscarriage or recurrent implantation failure, based on the mistaken notion that they cause reproductive failure by killing or "rejecting" the embryo. Maternal-fetal tolerance begins at the uterine level, so successful adaptation to the fetus occurs after a complicated process...
June 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28466568/physiological-and-pathological-angiogenesis-in-endometrium-at-the-time-of-embryo-implantation
#13
Xiaoyan Chen, Gene Chi Wai Man, Yingyu Liu, Fangrong Wu, Jin Huang, Tin Chiu Li, Chi Chiu Wang
Embryo establishes contact with the endometrium during implantation. Proper endometrial vascular development and maintenance at the time of embryo implantation is crucial for successful pregnancy. Vascular development at the maternal-embryo interface can be regulated by various cell types, of which uterine natural killer (uNK) cells play an important role. Abnormal angiogenesis and uNK cell number/function may lead to reproductive failure, particularly in women with recurrent miscarriage (RM) and women with recurrent implantation failure (RIF) after IVF-ET treatment, which are the important clinical hurdles in reproductive medicine to overcome...
August 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28441552/natural-killer-cell-activity-in-women-with-recurrent-miscarriage-etiology-and-pregnancy-outcome
#14
Yasuhiko Ebina, Yukari Nishino, Masashi Deguchi, Yoko Maesawa, Yuki Nakashima, Hideto Yamada
This study aimed to evaluate whether natural killer (NK) cell activity was associated with the etiology of recurrent miscarriage (RM), and to evaluate the predictive value of NK cell activity for outcomes of following pregnancies in women with RM. Peripheral NK cell activity was measured in 160 non-pregnant women with a history of two or more miscarriages. This activity was compared according to the etiology of RM and to pregnancy outcomes in women who became pregnant. NK cell activity in women with unexplained RM was significantly higher than that in those with known etiologies of RM...
April 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28388469/higher-prevalence-of-colonization-with-gardnerella-vaginalis-and-gram-negative-anaerobes-in-patients-with-recurrent-miscarriage-and-elevated-peripheral-natural-killer-cells
#15
R J Kuon, R Togawa, K Vomstein, M Weber, T Goeggl, T Strowitzki, U R Markert, S Zimmermann, V Daniel, A H Dalpke, B Toth
The role of vaginal infections in recurrent miscarriage (RM) is discussed controversially and screening is not recommended in international guidelines. Peripheral and uterine NK cells (pNK, uNK) play an important role in the establishment of a healthy pregnancy and are targets of immune diagnostics in RM patients. The aim of this study was to analyze the composition of the vaginal microbiota in RM patients and to correlate the findings to clinical characteristics as well as NK cell parameters. In total, n=243 RM patients with ≥3 consecutive miscarriages were recruited between 11/2011 and 03/2016...
March 30, 2017: Journal of Reproductive Immunology
https://www.readbyqxmd.com/read/28283683/pre-pregnancy-levels-of-peripheral-natural-killer-cells-as-markers-for-immunomodulatory-treatment-in-patients-with-recurrent-miscarriage
#16
Ruben J Kuon, Franziska Müller, Kilian Vomstein, Maja Weber, Hannes Hudalla, Sabine Rösner, Thomas Strowitzki, Udo Markert, Volker Daniel, Bettina Toth
Immunological risk factors in patients with recurrent miscarriage (RM) are discussed controversially. Abnormalities of natural killer cells (NK) have been described in RM patients. Lipid infusions are known to modulate lymphocyte subsets. The aim of this study was to identify immune parameters that predict success of treatment with lipid infusions in RM patients with elevated NK. In sum, n = 341 couples with RM were screened for established risk factors and peripheral lymphocyte subpopulations as well as uterine NK cells...
March 11, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28161567/multi-resolution-cell-orientation-congruence-descriptors-for-epithelium-segmentation-in-endometrial-histology-images
#17
Guannan Li, Shan E Ahmed Raza, Nasir M Rajpoot
It has been recently shown that recurrent miscarriage can be caused by abnormally high ratio of number of uterine natural killer (UNK) cells to the number of stromal cells in human female uterus lining. Due to high workload, the counting of UNK and stromal cells needs to be automated using computer algorithms. However, stromal cells are very similar in appearance to epithelial cells which must be excluded in the counting process. To exclude the epithelial cells from the counting process it is necessary to identify epithelial regions...
January 22, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28110587/peripheral-blood-cd34-cells-as-a-novel-and-noninvasive-early-marker-of-first-trimester-miscarriage-results-from-a-case-control-analysis
#18
Domenico Giordano, Saverio Loddo, Antonio Simone Laganà, Giuseppe Coppolino, Giuseppe Zoccali, Antonino Di Benedetto, Angelo Santamaria, Michele Buemi, Rosario D'Anna
PURPOSE: To evaluate the levels of peripheral blood CD34(+ )cells in women who subsequently had a spontaneous miscarriage (SM). MATERIALS AND METHODS: We enrolled 11 women who had SM, matching them for age, BMI and gestational age with 33 healthy pregnancies (controls). From a blood sample at 9th-11th weeks of pregnancy, we evaluated PAPP-A, free β-hCG, T (suppressor and helper), NK, B, CD34(+ )cells. RESULTS: In peripheral blood of women who had SM, PAPP-A and CD34(+ )cells were significantly lower (p < 0...
January 23, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28100263/benzene-poisoning-clinical-and-blood-abnormalities-in-two-brazilian-female-gas-station-attendants-two-case-reports
#19
Fábio Santiago, Simone Lima, Tayná Pinheiro, Rafaele Tavares Silvestre, Ubirani Barros Otero, Marianne Medeiros Tabalipa, Nadezda Kosyakova, Maria Helena Ornellas, Thomas Liehr, Gilda Alves
BACKGROUND: Brazilian gas station workers are chronically exposed to benzene, toluene, xylene (BTX) during their working time. Describe below two cases of latin female gas station workers with benzene poisoning symptoms and miscarriage history. CASE PRESENTATION: In both cases were identified complex chromosomal rearrangements (CCR) with fluorescence in situ hybridization, applied to whole chromosome paints by chromosomes 1, 2 and 4. The lower natural killer cell (NK) cells have also been observed in cases correspondents, especially the rare type of NK (NKbright) in their peripheral blood cells...
January 18, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28095355/immune-regulatory-network-in-successful-pregnancy-and-reproductive-failures
#20
REVIEW
Mahnaz Ghaebi, Mohammad Nouri, Aliyeh Ghasemzadeh, Laya Farzadi, Farhad Jadidi-Niaragh, Majid Ahmadi, Mehdi Yousefi
Maternal immune system must tolerate semiallogenic fetus to establish and maintain a successful pregnancy. Despite the existence of several strategies of trophoblast to avoid recognition by maternal leukocytes, maternal immune system may react against paternal alloantigenes. Leukocytes are important components in decidua. Not only T helper (Th)1/Th2 balance, but also regulatory T (Treg) cells play an important role in pregnancy. Although the frequency of Tregs is elevated during normal pregnancies, their frequency and function are reduced in reproductive defects such as recurrent miscarriage and preeclampsia...
April 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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