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Immunology of pregnancy

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https://www.readbyqxmd.com/read/28647398/immune-modulatory-effects-of-syncytiotrophoblast-extracellular-vesicles-in-pregnancy-and-preeclampsia
#1
Claudia Göhner, Torsten Plösch, Marijke M Faas
Unique immunologic adaptations exist to successfully establish and maintain pregnancy and to avoid an immune attack against the semi allogenic fetus. These adaptations occur both locally at the maternofetal interface and in the peripheral circulation and affect the innate as well as the adaptive immune system. Pregnancy is characterized by a general inflammatory state with activation of monocytes and granulocytes, but also with suppressive lymphocytes (regulatory T cells), and skewing towards T helper 2 immunity...
June 7, 2017: Placenta
https://www.readbyqxmd.com/read/28642294/mhc-class-ii-invariant-chain-peptide-or-gamma-delta-t-cell-depletion-ameliorates-experimental-preeclampsia
#2
Piyali Chatterjee, Valorie L Chiasson, Geetha Seerangan, Eugene De Guzman, Moheb Milad, Kelsey R Bounds, Olga Gasheva, Richard P Tobin, Mohamad Hatahet, Shelley Kopriva, Kathleen A Jones, M Karen Newell-Rogers, Brett Mitchell
Excessive innate immune system activation and inflammation during pregnancy can lead to organ injury and dysfunction and preeclampsia; however, the molecular mechanisms involved are unknown.  We tested the hypothesis that Toll-like receptor activation induces MHC class II invariant chain peptide (CLIP) expression on immune cells, makes them pro-inflammatory, and are necessary to cause preeclampsia-like features in mice.  Treatment with VG1177, a competitive antagonist peptide for CLIP in the groove of MHC class II, was able to both prevent and treat preeclampsia-like features in mice...
June 22, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28636882/foxn1-italian-founder-mutation-in-indian-family-implications-in-prenatal-diagnosis
#3
Akella Radha Rama Devi, Nagesh Narayan Panday, Shaik Mohammad Naushad
The Forkhead box N1 (FOXN1) is a transcriptional factor regulating the development, differentiation and function of thymic epithelial cells; maintaining T-lineage progenitors in bone marrow; promoting terminal differentiation of epithelial cells of hair follicles. Mutation in FOXN1 was reported to cause a rare disorder characterized by rudimentary thymus gland, T-cell immunodeficiency, congenital alopecia and nail dystrophy within an Italian community. This is the first report of FOXN1 p.R255X mutation from India, outside this endogamous Italian community...
June 18, 2017: Gene
https://www.readbyqxmd.com/read/28636613/in-vivo-immune-signatures-of-healthy-human-pregnancy-inherently-inflammatory-or-anti-inflammatory
#4
Caroline Graham, Rishma Chooniedass, William P Stefura, Allan B Becker, Malcolm R Sears, Stuart E Turvey, Piush J Mandhane, Padmaja Subbarao, Kent T HayGlass
Changes in maternal innate immunity during healthy human pregnancy are not well understood. Whether basal immune status in vivo is largely unaffected by pregnancy, is constitutively biased towards an inflammatory phenotype (transiently enhancing host defense) or exhibits anti-inflammatory bias (reducing potential responsiveness to the fetus) is unclear. Here, in a longitudinal study of healthy women who gave birth to healthy infants following uncomplicated pregnancies within the Canadian Healthy Infant Longitudinal Development (CHILD) cohort, we test the hypothesis that a progressively altered bias in resting innate immune status develops...
2017: PloS One
https://www.readbyqxmd.com/read/28627518/the-unique-immunological-and-microbial-aspects-of-pregnancy
#5
REVIEW
Gil Mor, Paulomi Aldo, Ayesha B Alvero
The comparison of the immunological state of pregnancy to an immunosuppressed host-graft model continues to lead research and clinical practice to ill-defined approaches. This Review discusses recent evidence that supports the idea that immunological responses at the receptive maternal-fetal interface are not simply suppressed but are instead highly dynamic. We discuss the crucial role of trophoblast cells in shaping not only the way in which immune cells respond to the invading blastocyst but also how they collectively react to external stimuli...
June 19, 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28620252/an-immunological-approach-of-sperm-sexing-and-different-methods-for-identification-of-x-and-y-chromosome-bearing-sperm
#6
REVIEW
Shiv Kumar Yadav, Dharmendra Kumar Gangwar, Jarnail Singh, Chiranjeev Kumar Tikadar, V Vinoth Khanna, Sudha Saini, Sunny Dholpuria, Prabhat Palta, Radhey Shyam Manik, Manoj Kumar Singh, Suresh Kumar Singla
Separation of X- and Y-chromosome bearing sperm has been practiced for selection of desired sex of offspring to increase the profit in livestock industries. At present, fluorescence-activated cell sorter is the only successful method for separation of X- and Y-chromosome bearing sperm. This technology is based on the differences in DNA content between these two types of sperm and has been commercialized for bovine sperm. However, this technology still has problems in terms of high economic cost, sperm damage, and lower pregnancy rates compared to unsorted semen...
May 2017: Veterinary World
https://www.readbyqxmd.com/read/28619429/vitamin-d-and-multiple-sclerosis-an-update
#7
REVIEW
Charles Pierrot-Deseilligny, Jean-Claude Souberbielle
The most recent findings linking exposure to sun and vitamin D insufficiency to multiple sclerosis (MS) are reviewed. Due to insufficient sunshine and changing lifestyles, hypovitaminosis D is widespread in temperate countries. Numerous epidemiological studies have strongly suggested that sunshine and vitamin D insufficiency contributes to MS risk in these countries. Moreover, several large genetic studies in MS patients have recently stated unequivocally that diverse abnormalities involving vitamin D metabolism are related to the risk of the disease...
May 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28606185/non-malarial-infectious-diseases-of-antenatal-care-in-pregnant-women-in-franceville-gabon
#8
Irene Pegha Moukandja, Edgard Brice Ngoungou, Guy Joseph Lemamy, Ulrick Bisvigou, Antoine Gessain, Fousseyni S Toure Ndouo, Mirdad Kazanji, Jean Bernard Lekana-Douki
BACKGROUND: In sub-tropical countries, infectious diseases remain one of the main causes of mortality. Because of their lack of active immunity, pregnant women and their unborn children represent the most susceptible people. In Gabon, data on infectious diseases of pregnant women such as syphilis and rubella are either scarce or very old. Few studies have assessed T. gondii infection during pregnancy in the country. Here, we evaluate seroprevalence of HIV, HTVL-1, syphilis and T. gondii and rubella infection during antenatal care among women living in Franceville, Gabon...
June 12, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28603870/advice-about-infant-feeding-for-allergy-prevention-a-confusing-picture-for-australian-consumers
#9
Merryn J Netting, Katrina J Allen
AIM: Early feeding plays an important role in programming the immune system, particularly the risk of food allergy. There are many infant feeding guides published for consumers available in Australia, with most based on the National Health and Medical Research Council (NHMRC) 2012 Infant Feeding Guidelines for Health Workers and the Australasian Society of Clinical Immunology and Allergy (ASCIA) Infant Feeding Advice for allergy prevention. We sought to compare allergy-specific content of infant feeding educational material written for parents with these two documents...
June 12, 2017: Journal of Paediatrics and Child Health
https://www.readbyqxmd.com/read/28588158/helicobacter-pylori-stool-antigen-assay-in-hyperemesis-gravidarum
#10
S Kabir, R A Khanam, M S Basher, M S Azam, M A Hossain, T T Mirza, K A Banu, R K Karmoker
Hyperemesis gravidarum is the most severe form of nausea and vomiting in pregnancy that seriously affects the pregnancy outcome. It is a disease with unknown etiology and varieties of contributing factors like hormonal changes, psychological and immunological factors. A significantly high prevalence of Helicobacter pylori among pregnant women with Hyperemesis gravidarum has been revealed recently. A descriptive, cross-sectional study was carried out at antenatal ward, Department of Obstetrics and Gynaecology, Mymensingh Medical College Hospital, Mymensingh for a period of twenty-one months among purposively selected thirty-six patients with Hyperemesis gravidarum with a view to assess the involvement of H...
April 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/28585775/the-roles-of-the-pd-1-pd-l1-pathway-at-immunologically-privileged-sites
#11
Li-Ling Wang, Zhi-Hui Li, Xiao-Hui Hu, Kahinho P Muyayalo, Yong-Hong Zhang, Ai-Hua Liao
The PD-1/PD-L1 pathway plays a vital role in the maintenance of peripheral tolerance, promoting the development and function of regulatory T cells, and maintaining the quiescence of autoreactive T cells. Abnormalities in this inhibitory pathway are involved in the pathogenesis of some disorders such as tumours, autoimmune diseases, pregnancy complications, and transplantation rejection. Immune privilege represents a special immunological condition, where foreign antigens can be tolerated and do not elicit an immune response...
June 6, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28585734/immunological-function-of-vitamin-d-during-human-pregnancy
#12
Jin-Lu Ji, Kahinho P Muyayalo, Yong-Hong Zhang, Xiao-Hui Hu, Ai-Hua Liao
The well-established classic role of vitamin D is implicated in the regulation of the balance between calcium and phosphorus. Furthermore, vitamin D is also involved in many non-classic physiological processes, mainly including the regulation of cell proliferation, differentiation, apoptosis and immune function, participation in the inflammatory response and maintenance of genome stability function. During pregnancy, vitamin D receptor and its metabolic enzymes are expressed at the placenta and decidua, indicating the potential role in the mechanism of immunomodulation at the maternal-fetal interface...
June 6, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28585704/the-regulations-and-role-of-circadian-clock-and-melatonin-in-uterine-receptivity-and-pregnancy-an-immunological-perspective
#13
Gene Chi Wai Man, Tao Zhang, Xiaoyan Chen, Jianzhang Wang, Fangrong Wu, Yingyu Liu, Chi Chiu Wang, Ying Cheong, Tin Chiu Li
During normal pregnancy, the mechanism by which the fetus escapes immunological rejection by the maternal womb remains elusive. Given the biological complexities, the immunological mechanism is unlikely to be simply an allograft response in acceptance or rejection of the early pregnancy. Circadian clock responsible for the mammalian circadian rhythm is an endogenously generated rhythm associated with almost all physiological processes including reproduction. There is now growing evidence to suggest that the circadian clocks are intricately linked to the immune system and pregnancy...
June 6, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28577615/maternal-allo-recognition-of-the-fetus
#14
REVIEW
Ashley Moffett, Olympe Chazara, Francesco Colucci
Immunological adjustments are needed to accommodate the close contact between two genetically different individuals, the mother and her baby, during mammalian pregnancy. Contact occurs between fetal somatic or placental cells that enter the maternal systemic circulation or between uterine immune cells and the invading extravillous trophoblast. Here we discuss two main types of maternal allo-recognition of the fetus. One depends on avoidance of maternal T cells recognizing and responding to paternally-derived non-self human leukocyte antigens class I and class I allotypes...
June 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28567279/evolving-treatment-implementation-among-hiv-infected-pregnant-women-and-their-partners-results-from-a-national-surveillance-study-in-italy-2001-2015
#15
Marco Floridia, Valentina Frisina, Marina Ravizza, Anna Maria Marconi, Carmela Pinnetti, Irene Cetin, Matilde Sansone, Atim Molinari, Francesca Cervi, Alessandra Meloni, Kety Luzi, Giulia Masuelli, Enrica Tamburrini
BACKGROUND: The current global and national indications for antiretroviral treatment (ART, usually triple combination therapy) in adolescent and adults, including pregnant women, recommend early ART before immunologic decline, pre-exposure chemoprophylaxis (PrEP), and treatment of HIV-negative partners in serodiscordant couples. There is limited information on the implementation of these recommendations among pregnant women with HIV and their partners. METHODS: The present analysis was performed in 2016, using data from clinical records of pregnant women with HIV, followed between 2001 and 2015 at hospital or university clinics within a large, nationally representative Italian cohort study...
June 2017: Journal of Global Health
https://www.readbyqxmd.com/read/28544232/peripartum-cytokine-flares-in-a-multiethnic-cohort-of-chronic-hepatitis-b-carriers-does-not-correlate-with-hepatitis-b-virus-suppression-or-increased-risk-of-liver-disease
#16
Shivali S Joshi, Daniel Wong, Eliana Castillo, Mark G Swain, Carla S Coffin
PROBLEM: In chronic hepatitis B (CHB) carriers, alanine transaminase (ALT) flares are common in the peripartum period. There are limited data on immunological changes of pregnancy in CHB. We hypothesize that in pregnant CHB carriers, the Th1/Th2 cytokine ratio is altered resulting in changes in biochemical/virological and liver fibrosis markers. STUDY METHODS: Serum from 38 pregnant/post-partum CHB carriers (median age 32 years, 53% Asian, 8 HBeAg(+) ) was tested for HBV DNA, quantitative HBV surface antigen, ALT and liver fibrosis by transient elastography (TE)...
May 19, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28542608/increase-in-complement-ic3b-is-associated-with-anti-inflammatory-cytokine-expression-during-late-pregnancy-in-mice
#17
Keigo Nakamura, Kazuya Kusama, Rulan Bai, Sadamasa Ishikawa, Sayuri Fukushima, Yoshihito Suda, Kazuhiko Imakawa
Immunological tolerance between fetal allograft and mother is crucial for pregnancy establishment and maintenance; however, these mechanisms particularly those during the latter part of pregnancy have not been definitively elucidated. The aim of this study was to examine the presence and potential function of innate immunity characteristic to the middle to late pregnancy. We first characterized up-regulated proteins in decidua from day 11 pregnant (P11) mice using 2D-PAGE, followed by MALDI-TOF/MS analysis...
2017: PloS One
https://www.readbyqxmd.com/read/28529323/an-immunogenic-phenotype-in-paternal-antigen-specific-cd8-t-cells-at-embryo-implantation-elicits-later-fetal-loss-in-mice
#18
Lachlan M Moldenhauer, Kerrilyn R Diener, John D Hayball, Sarah A Robertson
Central to pregnancy success is a state of T cell tolerance to paternal antigens, which is initiated at conception. The role and regulation of specific phenotypes of CD8(+) T cells in mediating pregnancy tolerance is not clear. This study aimed to investigate the impact on pregnancy outcome of altering the cytokine environment during maternal CD8(+) T cell priming in early pregnancy. Transgenic Act-mOVA male mice were mated to C57BL/6 (B6) females to generate fetuses expressing ovalbumin (OVA) as a model paternal antigen...
May 22, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28523429/kir-lilrb-and-their-ligands-genes-as-potential-biomarkers-in-recurrent-implantation-failure
#19
REVIEW
Izabela Nowak, Karolina Wilczyńska, Jacek R Wilczyński, Andrzej Malinowski, Paweł Radwan, Michał Radwan, Piotr Kuśnierczyk
Reproductive failure in humans is a very important social and economic problem, because nowadays women decide to conceive later in life and delay motherhood. Unfortunately, with increasing age they have less chance for natural fertilization and maintenance of pregnancy. Many of them need assisted reproductive technology. Approximately 10% of women after in vitro fertilization-embryo transfers experience recurrent implantation failure (RIF). Multiple factors may contribute to RIF, including oocyte and sperm quality, parental chromosomal anomalies, genetic or metabolic abnormalities of the embryo, poor uterine receptivity, immunological disturbances in the implantation site, and some gynecologic pathologies such as endometriosis, uterine fibroids, hydrosalpinx and endometrial polyps...
May 18, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/28512386/oxidative-stress-biomarkers-establishment-of-reference-values-for-isoprostanes-aopp-and-npbi-in-cord-blood
#20
Mariangela Longini, Elisa Belvisi, Fabrizio Proietti, Francesco Bazzini, Giuseppe Buonocore, Serafina Perrone
Oxidative stress (OS) is a common pathogenic factor involved in the onset of several diseases in humans, from immunologic disorders to malignancy, being a serious public health problem. In perinatal period, OS has been associated with adverse outcome of pregnancy and neonatal diseases. Dangerous effects of OS are mediated by increased production of free radicals (FRs) following various mechanisms, such as hypoxia, ischemia reperfusion, hyperoxia, inflammation, mitochondrial dysfunction, Fenton chemistry, and prostaglandin metabolism...
2017: Mediators of Inflammation
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