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Pregnancy immunology

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https://www.readbyqxmd.com/read/28340492/hemolysis-elevated-liver-enzymes-low-platelets-syndrome-superimposed-on-hemolytic-uremic-syndrome
#1
Inês Martins, Madalena Gomes Conceição, Paulo Pereira Gomes, Nuno Clode
A pregnancy complicated by typical hemolytic uremic syndrome (HUS) and hemolysis, elevated liver enzymes, low platelets (HELLP) syndrome is reported. At 20 weeks of gestation, a case of HUS was diagnosed, with Shiga toxin-producing Escherichia coli identified. Plasmapheresis allowed continuation of the pregnancy for 5 weeks. Superimposed preeclampsia and HELLP syndrome were diagnosed after the establishment of nephrotic range proteinuria, hypertension and recurrence of hemolysis. This is a singular case, as it demonstrates that HELLP syndrome can superimpose upon HUS, a fact that can impact future research on reproductive immunology...
March 24, 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28337875/the-pig-as-a-model-for-premature-infants-the-importance-of-immunoglobulin-supplementation-for-growth-and-development
#2
A Socha-Banasiak, S Pierzynowski, J Woliński, D Grujic, M Boryczka, P Grzesiak, P Szczurek, E Czkwianianc, B Westrom, K Goncharova
Preterm human neonates, contrary to preterm piglets, obtain immunoglobulins from their mothers via the placenta during intrauterine development. However, one should note that the majority of trans-placental transfer of immunoglobulins in humans takes place during the last trimester of pregnancy. It is also known that the feeding of limited amounts of colostrum or systemic infusion of small amounts of serum improves the survival of preterm and full-term piglets. Full-term piglets deprived of their mother’s immunoglobulins exhibit strong apathy and develop watery diarrhoea, often resulting in death...
January 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28332868/is-autoimmunology-a-discipline-of-its-own-a-big-data-based-bibliometric-and-scientometric-analyses
#3
Abdulla Watad, Nicola Luigi Bragazzi, Mohammad Adawi, Howard Amital, Shaye Kivity, Naim Mahroum, Miri Blank, Yehuda Shoenfeld
Autoimmunology is a super-specialty of immunology specifically dealing with autoimmune disorders. To assess the extant literature concerning autoimmune disorders, bibliometric and scientometric analyses (namely, research topics/keywords co-occurrence, journal co-citation, citations, and scientific output trends - both crude and normalized, authors network, leading authors, countries, and organizations analysis) were carried out using open-source software, namely, VOSviewer and SciCurve. A corpus of 169,519 articles containing the keyword "autoimmunity" was utilized, selecting PubMed/MEDLINE as bibliographic thesaurus...
March 23, 2017: Autoimmunity
https://www.readbyqxmd.com/read/28330900/adaptive-immune-responses-to-zika-virus-are-important-for-controlling-virus-infection-and-preventing-infection-in-brain-and-testes
#4
Clayton W Winkler, Lara M Myers, Tyson A Woods, Ronald J Messer, Aaron B Carmody, Kristin L McNally, Dana P Scott, Kim J Hasenkrug, Sonja M Best, Karin E Peterson
The recent association between Zika virus (ZIKV) and neurologic complications, including Guillain-Barré syndrome in adults and CNS abnormalities in fetuses, highlights the importance in understanding the immunological mechanisms controlling this emerging infection. Studies have indicated that ZIKV evades the human type I IFN response, suggesting a role for the adaptive immune response in resolving infection. However, the inability of ZIKV to antagonize the mouse IFN response renders the virus highly susceptible to circulating IFN in murine models...
March 22, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28328655/vascularized-composite-allotransplantation-an-emerging-concept-for-burn-reconstruction
#5
Zhi Yang Ng, Alexandre G Lellouch, Tessa Drijkoningen, Irene A Chang, David H Sachs, Curtis L Cetrulo
Vascularized composite allotransplantation (VCA) has demonstrated utility in the reconstruction of extensive soft-tissue defects following severe burns. However, pre-VCA events such as multiple transfusions, previous transplantation and pregnancies, the use of skin allografts, and mechanical support devices may result in sensitization and ultimately exclude a burn patient, who may benefit most through VCA, from a hand or face transplant. The authors sought to identify the immunologic challenges involved. All reported VCA cases up to July 2016 were reviewed...
March 15, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28319902/ultra-high-sensitivity-of-the-non-immunological-affinity-of-graphene-oxide-peptide-based-surface-plasmon-resonance-biosensors-to-detect-human-chorionic-gonadotropin
#6
Nan-Fu Chiu, Chia-Tzu Kuo, Ting-Li Lin, Chia-Chen Chang, Chen-Yu Chen
Specific peptide aptamers can be used in place of expensive antibody proteins, and they are gaining increasing importance as sensing probes due to their potential in the development of non-immunological assays with high sensitivity, affinity and specificity for human chorionic gonadotropin (hCG) protein. We combined graphene oxide (GO) sheets with a specific peptide aptamer to create a novel, simple and label-free tool to detect abnormalities at an early stage of pregnancy, a GO-peptide-based surface plasmon resonance (SPR) biosensor...
March 7, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28318556/natural-killer-cells-in-placentation-and-cancer-implications-for-hypertension-during-pregnancy
#7
Heather Yvonne Small, Denise C Cornelius, Tomasz J Guzik, Christian Delles
Hypertension during pregnancy is the most common medical condition encountered during gestation. Despite this, knowledge of the mechanisms that underlie the disease and the development of new therapies are limited. Hypertension during pregnancy and some forms of cancer confer an increased risk to the development of cardiovascular disease later in life; one mechanism which may link these conditions is the involvement of natural killer (NK) cells. Whilst immunology and immunotherapy are well-developed areas in oncology; the complex mechanisms of the immune system in health and disease at the maternal-fetal interface are less well-defined...
March 7, 2017: Placenta
https://www.readbyqxmd.com/read/28296959/estradiol-alters-the-immune-responsiveness-of-cervical-epithelial-cells-stimulated-with-ligands-of-toll-like-receptors-2-and-4
#8
Behnia S Lashkari, Dilly O C Anumba
The mucosa of the female reproductive tract plays a pivotal role in host defence. Pregnancy must alter immunological mechanisms at this interface to protect the conceptus. We sought to determine how estradiol (E2) alters the immune-responsiveness of cervical epithelial cells to ligand stimulation of Toll-like receptor (TLR)-2 and -4. Human ectocervical epithelial cells (HECECs) were cultured and co-incubated with two concentrations of E2 and peptidoglycan (PGN) or lipopolysaccharide (LPS) over durations that ranged between 10 minutes and 18 hours...
2017: PloS One
https://www.readbyqxmd.com/read/28296138/the-regulation-of-uterine-proinflammatory-gene-expression-during-pregnancy-in-the-live-bearing-lizard-pseudemoia-entrecasteauxii
#9
Kevin Hendrawan, Camilla M Whittington, Matthew C Brandley, Katherine Belov, Michael B Thompson
The evolutionary transition from egg-laying to live-bearing in amniote vertebrates (reptiles and mammals) requires the development of a closer association between the maternal and embryonic tissue to facilitate gas and nutrient exchange with the embryo. Because the embryo is an allograft to the father and mother, it could be considered foreign by the maternal immune system and thus be immunologically rejected during pregnancy. In eutherian ("placental") mammals, the proinflammatory genes interleukin 1B (IL1B), tumor necrosis factor (TNF) and tumor necrosis factor receptor superfamily 1A (TNFRSF1A) are tightly regulated in the pregnant uterus to prevent embryonic rejection...
March 10, 2017: Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution
https://www.readbyqxmd.com/read/28283683/pre-pregnancy-levels-of-peripheral-natural-killer-cells-as-markers-for-immunomodulatory-treatment-in-patients-with-recurrent-miscarriage
#10
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/28273105/incidence-and-risk-factors-for-hypertension-among-hiv-patients-in-rural-tanzania-a-prospective-cohort-study
#11
Eduardo Rodríguez-Arbolí, Kim Mwamelo, Aneth Vedastus Kalinjuma, Hansjakob Furrer, Christoph Hatz, Marcel Tanner, Manuel Battegay, Emilio Letang
INTRODUCTION: Scarce data are available on the epidemiology of hypertension among HIV patients in rural sub-Saharan Africa. We explored the prevalence, incidence and risk factors for incident hypertension among patients who were enrolled in a rural HIV cohort in Tanzania. METHODS: Prospective longitudinal study including HIV patients enrolled in the Kilombero and Ulanga Antiretroviral Cohort between 2013 and 2015. Non-ART naïve subjects at baseline and pregnant women during follow-up were excluded from the analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28261223/regulatory-b-cells-in-pregnancy-lessons-from-autoimmunity-graft-tolerance-and-cancer
#12
REVIEW
Ruth Marian Guzman-Genuino, Kerrilyn R Diener
The success of pregnancy is contingent on the maternal immune system recognizing and accommodating a growing semi-allogeneic fetus. Specialized subsets of lymphocytes capable of negative regulation are fundamental in this process, and include the regulatory T cells (Tregs) and potentially, regulatory B cells (Bregs). Most of our current understanding of the immune regulatory role of Bregs comes from studies in the fields of autoimmunity, transplantation tolerance, and cancer biology. Bregs control autoimmune diseases and can elicit graft tolerance by inhibiting the differentiation of effector T cells and dendritic cells (DCs), and activating Tregs...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28257865/early-pregnancy-related-changes-in-toll-like-receptors-expression-in-ovine-trophoblasts-and-peripheral-blood-leukocytes
#13
Mehmet Salih Kaya, Mehmet Kose, Aydin Guzeloglu, Zekeriya Kıyma, Mehmet Osman Atli
In the present study, we aimed to 1) demonstrate the presence of all 10 toll-like receptors (TLRs) in ovine trophoblasts, and 2) investigate the expression profiles of TLR1-10 mRNAs in peripheral blood leukocytes (PBLs) in ewes during early pregnancy. For those purposes, ovine trophoblasts (n = 6) were collected from pregnant ewes on day 13. PBLs were collected from non-pregnant (n = 6) and pregnant ewes (n = 17) on days of mating (d) 0 and 18. TLR mRNAs in ovine trophoblasts were visualized by free-floating in situ hybridization (ISH)...
April 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28249007/safety-evaluation-of-a-vaccine-effect-in-maternal-reproductive-outcome-and-fetal-anomaly-frequency-in-rats-using-a-leishmanial-vaccine-as-a-model
#14
Rafaianne Q Moraes-Souza, Ana Paula Reinaque, Thaigra S Soares, Ana Luiza T Silva, Rodolfo C Giunchetti, Maria A S Takano, Milena A Akamatsu, Flávia S Kubrusly, Fernanda Lúcio-Macarini, Isaias Raw, Dmitri Iourtov, Paulo Lee Ho, Lilian L Bueno, Ricardo T Fujiwara, Gustavo T Volpato
While the immunogenic potential of the vaccination against infectious diseases was extensively shown, data on the safety assessment of recombinant proteins in vaccine formulations administered during pregnancy are still scarce. In the current study, the antigenicity of a vaccine against leishmaniasis (based on Leishmania braziliensis recombinant protein peroxidoxin) during pregnancy and possible maternal reproductive outcomes and fetal anomalies after immunization with a leishmanial vaccine or adjuvant alone (Bordetella pertussis derived MPLA adjuvant) were assessed...
2017: PloS One
https://www.readbyqxmd.com/read/28224721/progesterone-driven-local-regulatory-t-cell-induction-does-not-prevent-fetal-loss-in-the-cba-j%C3%A3-dba-2j-abortion-prone-model
#15
Anne Schumacher, Dominique Dauven, Ana C Zenclussen
PROBLEM: Best known for its endocrine and immunologic properties, progesterone (P4) is a pivotal player for pregnancy success. However, the immunologic actions underlying P4 protection are not completely understood. Here, we investigated whether P4 application in a murine abortion-prone combination regulates regulatory T cells (Treg) and dendritic cells (DCs) and thereby affects pregnancy outcome. METHOD OF STUDY: Progesterone or vehicle was applied to DBA/2J-mated CBA/J abortion-prone animals in early pregnancy...
March 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28224678/microbiome-autoimmunity-allergy-and-helminth-infection-the-importance-of-the-pregnancy-period
#16
Xian Chen, Su Liu, Qiao Tan, Yehuda Shoenfeld, Yong Zeng
Pregnancy is a special physical period in reproductive age women, which has a beneficial influence on the course of certain autoimmune diseases. It has been recently suggested that the microbiome undergoes profound changes during pregnancy that are associated with host physiological and immunological adaptations. The maternal microbiome remodeling during pregnancy is an active response of the mother, possibly to alter immune system status and to facilitate metabolic and immunological adaptations, which are needed for a successful pregnancy...
February 21, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28223455/acute-fetal-demise-with-first-trimester-maternal-infection-resulting-from-listeria-monocytogenes-in-a-nonhuman-primate-model
#17
Bryce Wolfe, Gregory J Wiepz, Michele Schotzko, Gennadiy I Bondarenko, Maureen Durning, Heather A Simmons, Andres Mejia, Nancy G Faith, Emmanuel Sampene, Marulasiddappa Suresh, Sophia Kathariou, Charles J Czuprynski, Thaddeus G Golos
Infection with Listeria monocytogenes during pregnancy is associated with miscarriage, preterm birth, and neonatal complications, including sepsis and meningitis. While the risk of these conditions is thought to be greatest during the third trimester of pregnancy, the determinants of fetoplacental susceptibility to infection, the contribution of gestational age, and the in vivo progression of disease at the maternal-fetal interface are poorly understood. We developed a nonhuman primate model of listeriosis to better understand antecedents of adverse pregnancy outcomes in early pregnancy...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28214384/placental-pathology-in-hiv-infection-at-term-a-comparison-with-hiv-uninfected-women
#18
Emma Kalk, Pawel Schubert, Julie A Bettinger, Mark F Cotton, Monika Esser, Amy Slogrove, Colleen A Wright
OBJECTIVES: To describe and correlate placental characteristics from pregnancies in HIV-infected and HIV-negative women with maternal and infant clinical and immunological data. METHODS: Prospective descriptive study of placentas from term, uncomplicated vaginal births in a cohort of HIV-infected (n=120) and HIV-negative (n=103) women in Cape Town, South Africa. Microscopic and macroscopic features were used to determine pathological cluster diagnoses. The majority of HIV-infected women received some form of drug treatment for the prevention of vertical transmission of HIV...
February 18, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28188592/redirecting-reproductive-immunology-research-toward-pregnancy-as-a-period-of-temporary-immune-tolerance
#19
Norbert Gleicher, Vitaly A Kushnir, David H Barad
Referring to two recent publications, we here propose that clinical reproductive immunology has for decades stagnated because reproductive medicine, including assisted reproduction (AR), has failed to accept embryo implantation as an immune system-driven process, dependent on establishment of maternal tolerance toward the implanting fetal semi-allograft (and complete allograft in cases of oocyte donation). Pregnancy represents a biologically unique period of temporary (to the period of gestation restricted) tolerance, otherwise only known in association with parasitic infections...
February 10, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28178298/the-impact-of-prenatal-exposure-to-parasitic-infections-and-to-anthelminthic-treatment-on-antibody-responses-to-routine-immunisations-given-in-infancy-secondary-analysis-of-a-randomised-controlled-trial
#20
Stephen Nash, Alexander J Mentzer, Swaib A Lule, Dennison Kizito, Gaby Smits, Fiona R M van der Klis, Alison M Elliott
BACKGROUND: Chronic parasitic infections are associated with active immunomodulation which may include by-stander effects on unrelated antigens. It has been suggested that pre-natal exposure to parasitic infections in the mother impacts immunological development in the fetus and hence the offspring's response to vaccines, and that control of parasitic infection among pregnant women will therefore be beneficial. METHODOLOGY/PRINCIPAL FINDINGS: We used new data from the Entebbe Mother and Baby Study, a trial of anthelminthic treatment during pregnancy conducted in Uganda, to further investigate this hypothesis...
February 2017: PLoS Neglected Tropical Diseases
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