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Microchimerism

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https://www.readbyqxmd.com/read/29770457/abo-genotyping-with-next-generation-sequencing-to-resolve-heterogeneity-in-donors-with-serology-discrepancies
#1
Ping Chun Wu, Yin-Hung Lin, Lei Fang Tsai, Ming Hung Chen, Pei-Lung Chen, Shun-Chung Pai
BACKGROUND: ABO subtypes are characterized by the alteration of antigens present and their expression levels on red blood cells and many are linked to genetic changes in the ABO gene. Weakened expression of antigens should be identified to prevent transfusion reactions or ABO-incompatible transplantations. Genotyping can be applied to identify subtypes to complement serologic testing. Next-generation sequencing (NGS) has shown to provide sensitive and accurate genotyping results as well as valuable cis/trans information...
May 16, 2018: Transfusion
https://www.readbyqxmd.com/read/29695456/human-fetal-immune-cells-fight-back
#2
REVIEW
Claire A Chougnet
Immune dysregulation begins in utero, influenced by inflammation, maternal microchimerism, and the activation of fetal immune responses (Frascoli et al , this issue).
April 25, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29695455/alloreactive-fetal-t-cells-promote-uterine-contractility-in-preterm-labor-via-ifn-%C3%AE-and-tnf-%C3%AE
#3
Michela Frascoli, Lacy Coniglio, Russell Witt, Cerine Jeanty, Shannon Fleck-Derderian, Dana E Myers, Tzong-Hae Lee, Sheila Keating, Michael P Busch, Philip J Norris, Qizhi Tang, Giovanna Cruz, Lisa F Barcellos, Nardhy Gomez-Lopez, Roberto Romero, Tippi C MacKenzie
Healthy pregnancy is the most successful form of graft tolerance, whereas preterm labor (PTL) may represent a breakdown in maternal-fetal tolerance. Although maternal immune responses have been implicated in pregnancy complications, fetal immune responses against maternal antigens are often not considered. To examine the fetal immune system in the relevant clinical setting, we analyzed maternal and cord blood in patients with PTL and healthy term controls. We report here that the cord blood of preterm infants has higher amounts of inflammatory cytokines and a greater activation of dendritic cells...
April 25, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29619339/abortion-may-be-associated-with-elevated-risk-of-future-hypothyroidism
#4
Vivek Chauhan, Anurag Thakur, Gurudutt Sharma
Objective: Fetal microchimerism during pregnancy and abortion has been linked with autoimmune hypothyroidism in females. We conducted a case-control study to investigate the odds of "abortion in the past" in the newly diagnosed hypothyroid females compared to their age-matched euthyroid controls. Methods: All consecutive newly diagnosed hypothyroid females, over 1 year, were enrolled as cases. Age-matched euthyroid controls were selected from the same region...
January 2018: International Journal of Critical Illness and Injury Science
https://www.readbyqxmd.com/read/29577468/maternal-fetal-cross-talk-through-cell-free-fetal-dna-telomere-shortening-microchimerism-and-inflammation
#5
Shi-Bin Cheng, Sarah Davis, Surendra Sharma
There exists a strong correlation between unscheduled inflammation at the maternal-fetal interface and the continuum of pregnancy complications. In normal pregnancy, immunological tolerance is established to protect the semi-allogeneic fetus. There has been extensive research on how the immunity, endovascular trophoblast migration, and hormonal nexus are orchestrated during pregnancy at the maternal-fetal interface to program a normal pregnancy outcome. It is not clear what contributes to the plasticity of uterine immune tolerance, fetal survial, and long-term post-partum health of the mother and the offspring...
March 25, 2018: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/29552016/-in-utero-exposure-to-exosomal-and-b-cell-alloantigens-lessens-alloreactivity-of-recipients-lymphocytes-rather-than-confers-allograft-tolerance
#6
Jeng-Chang Chen, Liang-Shiou Ou, Cheng-Chi Chan, Ming-Ling Kuo, Li-Yun Tseng, Hsueh-Ling Chang
According to actively acquired tolerance, antigen exposure before full immune development in fetal or early neonatal life will cause tolerance to this specific antigen. In this study, we aimed to examine whether allogeneic tolerance could be elicited by in utero exposure to surface MHC antigens of allogenic cells or soluble form of MHC exosomes. Gestational day 14 FVB/N fetuses were subjected to intraperitoneal injection of allogeneic major histocompatibility complex (MHC) exosomes or highly enriched B-cells...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29430878/placental-implantation-over-prior-cesarean-scar-causes-activation-of-fetal-regulatory-t-cells
#7
Tina A Nguyen, Daniel A Kahn, Andrea I Loewendorf
INTRODUCTION: Maternal-fetal chimerism is miniscule, a testament to the integrity of the uteroplacental interface. The soundness of this border region is potentially altered through cesarean delivery of prior babies with uncertain consequences for the following pregnancies. METHODS: Using multicolor flow cytometry and quantitative PCR of non-inherited maternal antigens we performed a retrospective case control pilot study and formulated the null hypothesis that placental implantation over a prior uterine scar does not result in the presence of memory Treg (CD45RO+) in the fetus...
February 12, 2018: Immunity, Inflammation and Disease
https://www.readbyqxmd.com/read/29305193/ultra-sensitive-droplet-digital-pcr-for-the-assessment-of-microchimerism-in-cellular-therapies
#8
David Kliman, Gloria Castellano-Gonzalez, Barbara Withers, Janine Street, Elizabeth Tegg, Oksana Mirochnik, Joey Lai, Leighton Clancy, David Gottlieb, Emily Blyth
Current techniques to assess chimerism after hematopoietic stem cell transplantation (HSCT) are limited in both sensitivity and precision. These drawbacks are problematic in the context of cellular therapies that frequently result in microchimerism (donor chimerism <1%). We have developed a highly sensitive droplet digital PCR (ddPCR) assay using commercially available regents with good performance throughout the range of clinically relevant chimerism measurements, including microchimerism. We tested the assay using spiked samples of known donor-recipient ratios and in clinical samples from HSCT recipients and patients enrolled on clinical trials of microtransplantation and third-party virus-specific T cells (VSTs)...
January 2, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29259377/pretransplantation-fetal-maternal-microchimerism-in-pediatric-liver-transplantation-from-mother
#9
Nam-Joon Yi, Min-Su Park, Eun Young Song, Hye Young Ahn, Jeik Byun, Hyeyoung Kim, Suk Kyun Hong, Kyungchul Yoon, Hyo-Sin Kim, Sung-Woo Ahn, Hae Won Lee, YoungRok Choi, Kwang-Woong Lee, Kyung-Suk Suh, Myoung Hee Park
AIM: To investigate the rates of pretransplantation fetal-maternal microchimerism (MC) and its effect on rejection in children receiving maternal liver grafts. METHODS: DNA or blood samples before liver transplantation (LT) were available in 45 pediatric patients and their mothers. The presence of pretransplantation MC to non-inherited maternal antigens (NIMAs) (NIMA-MC) in the peripheral blood was tested using nested PCR-single-strand conformation polymorphism analysis for the human leukocyte antigen (HLA)-DRB1 alleles...
December 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/29211403/the-role-of-fetal-maternal-microchimerism-as-a-natural-born-healer-in-integrity-improvement-of-maternal-damaged-kidney
#10
Abdol-Mohammad Kajbafzadeh, Shabnam Sabetkish, Nastaran Sabetkish
PURPOSE: To identify the fetal stem cell (FSC) response to maternal renal injury with emphasis on renal integrity improvement and Y chromosome detection in damaged maternal kidney. MATERIALS AND METHODS: Eight non-green fluorescent protein (GFP) transgenic Sprague- Dawley rats were mated with GFP-positive transgenic male rats. Renal damage was induced on the right kidney at gestational day 11. The same procedure was performed in eight non-pregnant rats as control group...
December 7, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29197124/breastmilk-cell-trafficking-induces-microchimerism-mediated-immune-system-maturation-in-the-infant
#11
REVIEW
Jean-Pierre Molès, Edouard Tuaillon, Chipepo Kankasa, Anne-Sophie Bedin, Nicolas Nagot, Arnaud Marchant, Joann M McDermid, Philippe Van de Perre
Initiating breastfeeding within the first hour of life confers an important benefit in terms of child mortality and severe morbidity. Intestinal permeability to ingested macromolecules and immunoglobulins is limited to the first days of human life. These exchanges cease in the very early post-partum period but may increase beyond the neonatal period in response to local inflammation or introduction of a weaning food. From animal- and limited human-based observations, compelling evidence points out to breastmilk cells also trafficking from mother to infant mucosal tissues and participating to the maternal microchimerism...
March 2018: Pediatric Allergy and Immunology
https://www.readbyqxmd.com/read/29189413/emerging-role-of-exosomes-in-allorecognition-and-allograft-rejection
#12
Bruno Gonzalez-Nolasco, Mengchuan Wang, Aurore Prunevieille, Gilles Benichou
PURPOSE OF REVIEW: This article reviews recent literature on the nature of extracellular vesicles released by allogeneic transplants and examine their role in T-cell alloimmunity involved in rejection and tolerance of these grafts. RECENT FINDINGS: Donor cells release extracellular vesicles, including exosomes, after transplantation of allogeneic organs and tissues. Consequently, recipient APCs take up these exosomes and present donor MHC antigens on their surface (allo-MHC cross-dressing) thus, activating some alloreactive T cells via a mechanism called semi-direct pathway of allorecognition...
February 2018: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29028900/unravelling-the-biological-secrets-of-microchimerism-by-single-cell-analysis
#13
Anders Ståhlberg, Amin El-Heliebi, Peter Sedlmayr, Thomas Kroneis
The presence of microchimeric cells is known for >100 years and well documented since decades. Earlier, microchimeric cells were mainly used for cell-based non-invasive prenatal diagnostics during early pregnancy. Microchimeric cells are also present beyond delivery and are associated to various autoimmune diseases, tissue repair, cancer and immune tolerance. All these findings were based on low complexity studies and occasionally accompanied by artefacts not allowing the biological functions of microchimerism to be determined...
September 28, 2017: Briefings in Functional Genomics
https://www.readbyqxmd.com/read/29022092/unique-manifestations-of-biliary-atresia-provide-new-immunological-insight-into-its-etiopathogenesis
#14
REVIEW
Toshihiro Muraji, Haruo Ohtani, Satoshi Ieiri
Biliary atresia (BA) is a unique cholestatic disease of newborns with a background of exaggerated immune response in the liver of unknown mechanism. Three hypotheses have been proposed; autoimmune type of cholangiopathy triggered by virus infection, graft-versus-host disease type of immune-mediated disease associated with maternal microchimerism and ductal plate malformation theory. Researchers on virus infection theory have experimentally explored immune process causing cholangiopathy on murine models of this disease, while in maternal microchimerism hypothesis were detected maternal cells in the BA patients' liver, of which roles are yet to be determined...
December 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/28972207/reply-breastfeeding-related-maternal-microchimerism
#15
Jeremy M Kinder, Ina A Stelzer, Petra C Arck, Sing Sing Way
No abstract text is available yet for this article.
November 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28972205/breastfeeding-related-maternal-microchimerism
#16
Jean-Pierre Molès, Edouard Tuaillon, Chipepo Kankasa, Anne-Sophie Bedin, Nicolas Nagot, Arnaud Marchant, Joann M McDermid, Philippe Van de Perre
No abstract text is available yet for this article.
November 2017: Nature Reviews. Immunology
https://www.readbyqxmd.com/read/28921714/fetal-microchimerism-in-human-brain-tumors
#17
Lauren Broestl, Joshua B Rubin, Sonika Dahiya
Sex differences in cancer incidence and survival, including central nervous system tumors, are well documented. Multiple mechanisms contribute to sex differences in health and disease. Recently, the presence of fetal-in-maternal microchimeric cells has been shown to have prognostic significance in breast and colorectal cancers. The frequency and potential role of these cells has not been investigated in brain tumors. We therefore selected two common primary adult brain tumors for this purpose: meningioma, which is sex hormone responsive and has a higher incidence in women, and glioblastoma, which is sex hormone independent and occurs more commonly in men...
September 18, 2017: Brain Pathology
https://www.readbyqxmd.com/read/28911790/microchimerism-defining-and-redefining-the-prepregnancy-context-a-review
#18
H S Gammill, W E Harrington
Bidirectional transplacental exchange characterizes human pregnancy. Cells exchanged between mother and fetus can durably persist as microchimerism and may have both short- and long-term consequences for the recipient. The amount, type, and persistence of microchimerism are influenced by obstetric characteristics, pregnancy complications, exposures to infection, and other factors. A reproductive-aged woman enters pregnancy harboring previously acquired microchimeric "grafts," which may influence her preconception health and her subsequent pregnancy outcomes...
December 2017: Placenta
https://www.readbyqxmd.com/read/28911140/parity-and-risk-of-thyroid-autoimmunity-based-on-the-nhanes-2001-2002-2007-2008-2009-2010-and-2011-2012
#19
COMPARATIVE STUDY
Marelle Yehuda, Chia-Hao Wang, Youngju Pak, Ken C Chiu, Andrew G Gianoukakis
Context: Autoimmune thyroid disease is more common in women than in men. Fetal microchimerism has been implicated as a potential explanation for this disparity. Objective: The objective of this study was to evaluate the relationship between parity and thyroid autoimmunity in the US population. Design, Setting, Patients: The National Health and Nutrition Examination Survey was used to identify females with antithyroperoxidase (TPOAb) and antithyroglobulin antibody (TgAb) measurements and parity data...
September 1, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28910431/hla-mismatched-microtransplant-in-older-patients-newly-diagnosed-with-acute-myeloid-leukemia-results-from-the-microtransplantation-interest-group
#20
Mei Guo, Nelson J Chao, Jian-Yong Li, David A Rizzieri, Qi-Yun Sun, Ann Mohrbacher, Elizabeth F Krakow, Wan-Jun Sun, Xu-Liang Shen, Xin-Rong Zhan, De-Pei Wu, Li Liu, Juan Wang, Min Zhou, Lin-Hua Yang, Yang-Yi Bao, Zheng Dong, Bo Cai, Kai-Xun Hu, Chang-Lin Yu, Jian-Hui Qiao, Hong-Li Zuo, Ya-Jing Huang, Anthony D Sung, Jun-Xiao Qiao, Zhi-Qing Liu, Tie-Qiang Liu, Bo Yao, Hong-Xia Zhao, Si-Xuan Qian, Wei-Wei Liu, Rafael Forés, Rafael F Duarte, Hui-Sheng Ai
Importance: The outcome of older patients with acute myeloid leukemia (AML) remains unsatisfactory. Recent studies have shown that HLA-mismatched microtransplant could improve outcomes in such patients. Objective: To evaluate outcomes in different age groups among older patients with newly diagnosed AML who receive HLA-mismatched microtransplant. Design, Setting, and Participants: This multicenter clinical study included 185 patients with de novo AML at 12 centers in China, the United States, and Spain in the Microtransplantation Interest Group...
January 1, 2018: JAMA Oncology
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