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reproductive immunology

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https://www.readbyqxmd.com/read/28526042/c-kit-receptor-immunopositive-interstitial-cells-cajal-type-in-the-porcine-reproductive-tract
#1
Malgorzata Domino, Bartosz Pawlinski, Romuald Zabielski, Zdzislaw Gajewski
BACKGROUND: Interstitial Cajal cells have been suspected as being the pacemaker cells of smooth muscle motor activity and discharging slow triggering waves in the gut as well as in other organs containing smooth muscles where they are known as interstitial Cajal-like cells (ICLC). The present study describes ICLC localization and density in the porcine oviduct and uterus. Differences in ICLC density were examined using histological, immunohistochemical and immunofluorescent methods and c-kit expression was determined...
May 19, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28523429/kir-lilrb-and-their-ligands-genes-as-potential-biomarkers-in-recurrent-implantation-failure
#2
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/28501368/contribution-of-immunology-to-implantation-failure-of-euploid-embryos
#3
REVIEW
Jason M Franasiak, Richard T Scott
Outcomes in assisted reproduction have seen marked improvement. With increased ability in the embryology laboratory to use extended embryo culture which in turn enables other selective techniques, such as trophectoderm biopsy and comprehensive chromosome screening, the chance of success per embryo transfer is increased. However, even the selection of a euploid blastocyst, which selects out many embryonic factors, does not yield successful implantation and ultimately delivery in all cases. Among the factors that affect implantation failure of apparently reproductively competent embryos, the immune system has been perhaps both the most plausible and the most debated...
May 10, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28501364/immune-modulation-treatments-where-is%C3%A2-the-evidence
#4
REVIEW
Malene Meisner Hviid, Nick Macklon
While advances in assisted reproductive techniques have been substantial, failure of the apparently viable embryo to implant remains a source of distress and frustration to patients and specialists alike. The unique maternal immunological response to the embryo and the notion that defects in early placentation underlie the great complications of pregnancy have focused attention on the therapeutic potential of peri-implantation immunomodulation. On the face of it, the rationale for this approach is very attractive...
May 10, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28499964/life-history-dependent-relationships-between-body-condition-and-immunity-between-immunity-indices-in-male-eurasian-tree-sparrows
#5
Yuliang Zhao, Mo Li, Yanfeng Sun, Wei Wu, Guanqun Kou, Lingling Guo, Danning Xing, Yuefeng Wu, Dongming Li, Baohua Zhao
In free-living animals, recent evidence indicates that innate, and acquired, immunity varies with annual variation in the demand for, and availability of, food resources. However, little is known about how animals adjust the relationships between immunity and body condition, and between innate and acquired immunity to optimize survival over winter and reproductive success during the breeding stage. Here, we measured indices of body condition (size-corrected mass [SCM], and hematocrit [Hct]), constitutive innate immunity (plasma total complement hemolysis activity [CH50]) and acquired immunity (plasma immunoglobulin A [IgA]), plus heterophil/lymphocyte (H/L) ratios, in male Eurasian tree sparrows (Passer montanus) during the wintering and the breeding stages...
May 9, 2017: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/28483504/introduction-immunology-and-assisted-reproductive-technology-in-the-21st-century
#6
REVIEW
Juan A Garcia-Velasco
In the past few years we have witnessed reproductive immunology taking a leading role after repeated implantation failure. We still face the problem of even euploid embryos that either fail to implant or are miscarried. These focused articles present the attending clinician with the most recent evidence to understand how immunology contributes to human reproduction, what can be done at the clinical level, and what is still an area for research and should not be offered to patients outside of a clinical research scenario...
May 5, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28463396/t-cell-infiltration-and-clonality-correlate-with-programmed-cell-death-protein-1-and-programmed-death-ligand-1-expression-in-patients-with-soft-tissue-sarcomas
#7
Seth M Pollack, Qianchuan He, Jennifer H Yearley, Ryan Emerson, Marissa Vignali, Yuzheng Zhang, Mary W Redman, Kelsey K Baker, Sara Cooper, Bailey Donahue, Elizabeth T Loggers, Lee D Cranmer, Matthew B Spraker, Y David Seo, Venu G Pillarisetty, Robert W Ricciotti, Benjamin L Hoch, Terrill K McClanahan, Erin Murphy, Wendy M Blumenschein, Steven M Townson, Sharon Benzeno, Stanley R Riddell, Robin L Jones
BACKGROUND: Patients with metastatic sarcomas have poor outcomes and although the disease may be amenable to immunotherapies, information regarding the immunologic profiles of soft tissue sarcoma (STS) subtypes is limited. METHODS: The authors identified patients with the common STS subtypes: leiomyosarcoma, undifferentiated pleomorphic sarcoma (UPS), synovial sarcoma (SS), well-differentiated/dedifferentiated liposarcoma, and myxoid/round cell liposarcoma. Gene expression, immunohistochemistry for programmed cell death protein (PD-1) and programmed death-ligand 1 (PD-L1), and T-cell receptor Vβ gene sequencing were performed on formalin-fixed, paraffin-embedded tumors from 81 patients...
May 2, 2017: Cancer
https://www.readbyqxmd.com/read/28452951/adverse-health-effects-of-thirdhand-smoke-from-cell-to-animal-models
#8
REVIEW
Bo Hang, Pin Wang, Yue Zhao, Altaf Sarker, Ahmed Chenna, Yankai Xia, Antoine M Snijders, Jian-Hua Mao
The newly identified smoke hazard, thirdhand smoke (THS), has gained public attention in recent years but its health impact and biological effects are largely unknown. THS may be defined by "the four Rs": tobacco chemicals that remain, react, re-emit, and/or are resuspended long after active smoking has ceased. This review summarizes recent research progress in the effects of THS on genotoxicity, metabolism and early life development using cellular and animal models. We first reported that THS generated in laboratory systems caused significant DNA damage in human cell lines...
April 28, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28430618/t-2-mycotoxin-toxicological-effects-and-decontamination-strategies
#9
REVIEW
Manish Adhikari, Bhawana Negi, Neha Kaushik, Anupriya Adhikari, Abdulaziz A Al-Khedhairy, Nagendra Kumar Kaushik, Eun Ha Choi
Mycotoxins are highly diverse secondary metabolites produced in nature by a wide variety of fungus which causes food contamination, resulting in mycotoxicosis in animals and humans. In particular, trichothecenes mycotoxin produced by genus fusarium is agriculturally more important worldwide due to the potential health hazards they pose. It is mainly metabolized and eliminated after ingestion, yielding more than 20 metabolites with the hydroxy trichothecenes-2 toxin being the major metabolite. Trichothecene is hazardously intoxicating due to their additional potential to be topically absorbed, and their metabolites affect the gastrointestinal tract, skin, kidney, liver, and immune and hematopoietic progenitor cellular systems...
May 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28428937/intravenous-immunoglobulin-g-in-women-with-reproductive-failure-the-korean-society-for-reproductive-immunology-practice-guidelines
#10
REVIEW
Nayoung Sung, Ae Ra Han, Chan Woo Park, Dong Wook Park, Joon Cheol Park, Na Young Kim, Kyung Sil Lim, Ji Eun Shin, Chang Woo Joo, Seung Eun Lee, Jae Won Kim, Sung Ki Lee
The task force of the Korean Society for Reproductive Immunology recommends intravenous immunoglobulin G treatment in women with reproductive failure, including recurrent pregnancy loss and/or repeated implantation failure, who show cellular immune factors such as abnormal natural killer cell levels, natural killer cell cytotoxicity, and/or type 1 T helper immunity.
March 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28424285/equine-arteritis-virus-has-specific-tropism-for-stromal-cells-and-cd8-t-and-cd21-b-lymphocytes-but-not-glandular-epithelium-at-the-primary-site-of-persistent-infection-in-the-stallion-reproductive-tract
#11
Mariano Carossino, Alan T Loynachan, Igor F Canisso, R Frank Cook, Juliana R Campos, Bora Nam, Yun Young Go, Edward L Squires, Mats H T Troedsson, Thomas Swerczek, Fabio Del Piero, Ernest Bailey, Peter J Timoney, Udeni B R Balasuriya
Equine arteritis virus (EAV) has a global impact on the equine industry being the causative agent of equine viral arteritis (EVA), a respiratory, systemic, and reproductive disease of equids. A distinctive feature of EAV infection is that it establishes long-term persistent infection in 10 to 70% of infected stallions (carriers). In these stallions, EAV is only detectable in the reproductive tract and viral persistence occurs despite the presence of high serum neutralizing antibodies. Carrier stallions constitute the natural reservoir of the virus as they continuously shed EAV in their semen...
April 19, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28413045/effector-mechanisms-of-humoral-immunity-to-porcine-reproductive-and-respiratory-syndrome-virus
#12
REVIEW
Michael C Rahe, Michael P Murtaugh
Porcine reproductive and respiratory syndrome virus (PRRSV) continues to afflict swine nearly 30 years after it was first discovered as the causative agent of "mystery swine disease". Immunological tools of vaccination and exposure to virulent viruses have not succeeded in achieving control and prevention of PRRSV. Humoral immunity, mediated by antibodies, is a hallmark of anti-viral immunity, but little is known about the effector mechanisms of humoral immunity against PRRSV. It is essential to understand the immunological significance of antibody functions, including recently described broadly neutralizing antibodies and potential non-neutralizing activities, in the immune response to PRRSV...
April 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28401937/progesterone-based-compounds-affect-immune-responses-and-susceptibility-to-infections-at-diverse-mucosal-sites
#13
REVIEW
Olivia J Hall, Sabra L Klein
Over 100 million women worldwide are currently on progesterone-based contraceptives to improve their health outcomes through reduced maternal mortality and family planning. In addition to their role in reproduction, progesterone-based compounds modulate immune responses throughout the body, particularly at mucosal sites. By binding to receptors located in immune cells, including natural killer cells, macrophages, dendritic cells, and T cells, as well in non-immune cells, such as epithelial and endothelial cells, progesterone-based compounds alter cellular signaling and activity to affect the outcome of infections at diverse mucosal sites, including the genital, gastrointestinal, and respiratory tracts...
April 12, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28401934/vaginal-lactic-acid-elicits-an-anti-inflammatory-response-from-human-cervicovaginal-epithelial-cells-and-inhibits-production-of-pro-inflammatory-mediators-associated-with-hiv-acquisition
#14
A C Hearps, D Tyssen, D Srbinovski, L Bayigga, D J D Diaz, M Aldunate, R A Cone, R Gugasyan, D J Anderson, G Tachedjian
Inflammation in the female reproductive tract (FRT) is associated with increased HIV transmission. Lactobacillus spp. dominate the vaginal microbiota of many women and their presence is associated with reduced HIV acquisition. Here we demonstrate that lactic acid (LA), a major organic acid metabolite produced by lactobacilli, mediates anti-inflammatory effects on human cervicovaginal epithelial cells. Treatment of human vaginal and cervical epithelial cell lines with LA (pH 3.9) elicited significant increases in the production of the anti-inflammatory cytokine IL-1RA...
April 12, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28398155/seasonal-patterns-of-variation-in-steroid-plasma-levels-and-immune-parameters-in-anurans-from-brazilian-semiarid-area
#15
Carla Bonetti Madelaire, Inna Sokolova, Fernando Ribeiro Gomes
Elevated androgens and glucocorticoids displayed by males during the reproductive season have been proposed to mediate a possible trade-off between reproduction and immunocompetence. Anurans living in arid and semiarid environments display a strong seasonal reproduction, which could accentuate the variation in physiological, immunological, and behavioral parameters. We studied covariation between steroid plasma levels, morphometric variables associated with body condition and immunity, leukocyte profile, parasite load, and response to an immunological challenge across different phases of the annual life-history cycle of three anuran species from a Brazilian semiarid area...
July 2017: Physiological and Biochemical Zoology: PBZ
https://www.readbyqxmd.com/read/28341332/the-viral-innate-immune-antagonism-and-an-alternative-vaccine-design-for-prrs-virus
#16
REVIEW
Hanzhong Ke, Dongwan Yoo
Porcine reproductive and respiratory syndrome (PRRS) remains one of the most economically significant diseases in the swine industry worldwide. The current vaccines are less satisfactory to confer protections from heterologous infections and long-term persistence, and the need for better vaccines are urgent. The immunological hallmarks in PRRSV-infected pigs include the unusually poor production of type I interferons (IFNs-α/β) and the aberrant and delayed adaptive immune responses, indicating that PRRSV has the ability to suppress both innate and adaptive immune responses in the host...
March 18, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28340492/hemolysis-elevated-liver-enzymes-low-platelets-syndrome-superimposed-on-hemolytic-uremic-syndrome
#17
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...
April 2017: Revista Brasileira de Ginecologia e Obstetrícia
https://www.readbyqxmd.com/read/28339013/immunological-effects-of-occupational-exposure-to-lead-review
#18
Concettina Fenga, Silvia Gangemi, Valentina Di Salvatore, Luca Falzone, Massimo Libra
It is well-known that occupational and environmental exposure to several factors, including benzene, heavy metals, chemicals and mineral fibers, is associated with the risk of developing a great number of diseases. Numerous studies have been carried out in order to investigate the mechanisms of toxicity of these substances, with particular regard to the possible toxic effects on the immune system. However, little is known about the influence of heavy metals, such as lead, on the immune system in human populations...
May 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28328045/micrornas-downregulated-following-immune-activation-of-rat%C3%A2-testis
#19
Mitchell I Parker, Michael A Palladino
PROBLEM: Little is known about how infection and the response to inflammation affect the microRNA (miRNA) profile of the male reproductive tract. We hypothesized that expression of inflammatory-related miRNAs would be altered following immune activation of rat testis. METHOD OF STUDY: Testis total RNA was purified from Sprague-Dawley rats 3 or 6 hours after receiving a 5 mg/kg intraperitoneal injection of bacterial lipopolysaccharide (LPS) and examined by qPCR using an 84-panel miRNA array...
March 22, 2017: American Journal of Reproductive Immunology: AJRI
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
#20
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
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