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Immune function

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https://www.readbyqxmd.com/read/29471506/a-translational-silencing-function-of-mcpip1-regnase-1-specified-by-the-target-site-context
#1
Gesine Behrens, Reinhard Winzen, Nina Rehage, Anneke Dörrie, Monika Barsch, Anne Hoffmann, Jörg Hackermüller, Christopher Tiedje, Vigo Heissmeyer, Helmut Holtmann
The expression of proteins during inflammatory and immune reactions is coordinated by post-transcriptional mechanisms. A particularly strong suppression of protein expression is exerted by a conserved translational silencing element (TSE) identified in the 3' UTR of NFKBIZ mRNA, which is among the targets of the RNA-binding proteins Roquin-1/2 and MCPIP1/Regnase-1. We present evidence that in the context of the TSE MCPIP1, so far known for its endonuclease activity toward mRNAs specified by distinct stem-loop (SL) structures, also suppresses translation...
February 19, 2018: Nucleic Acids Research
https://www.readbyqxmd.com/read/29471497/increased-nk-cell-function-after-cessation-of-long-term-nucleos-t-ide-analogue-treatment-in-chronic-hepatitis-b-associates-with-liver-damage-and-hbsag-loss
#2
Christine L Zimmer, Franziska Rinker, Christoph Höner Zu Siederdissen, Michael P Manns, Heiner Wedemeyer, Markus Cornberg, Niklas K Björkström
Background: Treatment with nucleos(t)ide analogues (NA) efficiently suppress HBV DNA but rarely leads to functional cure of chronic hepatitis B (CHB). Following NA cessation, a fraction of HBeAg-negative CHB-patients experience HBsAg loss. Cellular immune responses, including those by natural killer cells, innate lymphocytes known to respond in CHB, explaining the virological events transpiring following NA treatment cessation remain elusive. Methods: In a single-center prospective trial, 15 HBeAg-negative CHB-patients on long-term NA treatment underwent structured NA cessation and were studied longitudinally...
February 17, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29471465/effects-of-dietary-energy-level-and-intake-of-corn-by-product-based-diets-on-newly-received-growing-cattle-antibody-production-acute-phase-protein-response-stress-and-immunocompetency-of-healthy-and-morbid-animals
#3
T J Spore, S P Montgomery, E C Titgemeyer, G A Hanzlicek, C I Vahl, T G Nagaraja, K T Cavalli, W R Hollenbeck, R A Wahl, D A Blasi
Effects of dietary energy level and intake of corn by-product based diets on antibody production, acute phase protein response, stress, and immunocompetency of healthy and morbid newly received growing cattle were evaluated. Four dietary treatments were formulated to supply 0.99, 1.10, 1.21, and 1.32 Mcal NEg/ kg DM and were offered at 100%, 95%, 90%, and 85% of ad libitum based on 0.99/100 treatment intake, respectively. Thirty-two pens were utilized with approximately 12 animals/pen. Four animals from each pen (32/dietary treatment) were randomly selected and used to serve as a subset to monitor immune function and acute phase proteins following a split-plot design...
February 19, 2018: Journal of Animal Science
https://www.readbyqxmd.com/read/29471387/heavy-cannabis-use-associated-with-reduction-in-activated-and-inflammatory-immune-cell-frequencies-in-antiretroviral-therapy-treated-human-immunodeficiency-virus-infected-individuals
#4
Jennifer A Manuzak, Toni M Gott, Jay S Kirkwood, Ernesto Coronado, Tiffany Hensley-McBain, Charlene Miller, Ryan K Cheu, Ann C Collier, Nicholas T Funderburg, Jeffery N Martin, Michael C Wu, Nina Isoherranen, Peter W Hunt, Nichole R Klatt
Background: Cannabis is a widely used drug in the United States, and the frequency of cannabis use in the human immunodeficiency virus (HIV)-infected population is disproportionately high. Previous human and macaque studies suggest that cannabis may have an impact on plasma viral load; however, the relationship between cannabis use and HIV-associated systemic inflammation and immune activation has not been well defined. Methods: The impact of cannabis use on peripheral immune cell frequency, activation, and function was assessed in 198 HIV-infected, antiretroviral-treated individuals by flow cytometry...
February 17, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29471356/characterization-of-p57-a-stage-specific-antigen-of-pneumocystis-murina
#5
Lisa R Bishop, A Sally Davis, Kaitlynn Bradshaw, Monica Gamez, Ousmane H Cisse, Honghui Wang, Liang Ma, Joseph A Kovacs
Pneumocystis has a large multi-copy gene family encoding proteins related to the major surface glycoprotein (Msg) whose functions are largely unknown. We expressed one such protein of P. murina, p57, that is encoded by 3 highly conserved genes, and demonstrated by immunoblot that immunocompetent mice immunized with crude Pneumocystis antigens or that had cleared Pneumocystis infection developed antibodies to p57. Using hyper-immune anti-p57 serum combined with immunolabeling, we found that small trophic forms as well as intracystic bodies expressed p57, while it was not expressed on larger trophic forms or externally by cysts...
February 17, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29471137/mucosal-and-systemic-responses-of-immunogenic-vaccines-candidates-against-enteric-escherichia-coli-infections-in-ruminants-a-review
#6
REVIEW
A Lawan, F F A Jesse, U H Idris, M N Odhah, M Arsalan, N A Muhammad, K R Bhutto, Innocent Damudu Peter, G A Abraham, A H Wahid, M L Mohd-Azmi, M Zamri-Saad
Innumerable Escherichia coli of animal origin are identified, which are of economic significance, likewise, cattle, sheep and goats are the carrier of enterohaemorrhagic E. coli, which are less pathogenic, and can spread to people by way of direct contact and through the contamination of foodstuff or portable drinking water, causing serious illness. The immunization of ruminants has been carried out for ages and is largely acknowledged as the most economical and maintainable process of monitoring E. coli infection in ruminants...
February 19, 2018: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29471127/targeting-cd14-on-blood-derived-cells-improves-intracortical-microelectrode-performance
#7
Hillary W Bedell, John K Hermann, Madhumitha Ravikumar, Shushen Lin, Ashley Rein, Xujia Li, Emily Molinich, Patrick D Smith, Stephen M Selkirk, Robert H Miller, Steven Sidik, Dawn M Taylor, Jeffrey R Capadona
Intracortical microelectrodes afford researchers an effective tool to precisely monitor neural spiking activity. Additionally, intracortical microelectrodes have the ability to return function to individuals with paralysis as part of a brain computer interface. Unfortunately, the neural signals recorded by these electrodes degrade over time. Many strategies which target the biological and/or materials mediating failure modes of this decline of function are currently under investigation. The goal of this study is to identify a precise cellular target for future intervention to sustain chronic intracortical microelectrode performance...
February 13, 2018: Biomaterials
https://www.readbyqxmd.com/read/29471060/identification-of-three-class-a-scavenger-receptors-from-rainbow-trout-oncorhynchus-mykiss-scara3-scara4-and-scara5
#8
S J Poynter, A Monjo, S J DeWitte-Orr
Class A scavenger receptors (SR-As) are a family of five surface receptors whose functions in mammals are associated with innate immunity; however, their role in fish immunity requires further elucidation. The present study identifies, performs sequence analysis, and constitutive transcript expression analysis for three SR-A family members, SCARA3, SCARA4 an SCARA5, from rainbow trout. This work will provide a basis for future studies on SR-A function and their role in innate immunity in this economically important fish...
February 19, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29470989/redox-exchange-of-the-disulfides-of-human-two-domain-cd4-regulates-the-conformational-dynamics-of-each-domain-providing-insight-into-its-mechanisms-of-control
#9
Gavin R Owen, Doris Le, Stoyan Stoychev, Nichole M Cerutti, Maria Papathanasopoulos
CD4, a membrane glycoprotein expressed by specific leukocytes, plays a vital role in the human immune response and acts as a primary receptor for HIV entry. Of its four ecto-domains (D1-D4), D1, D2, and D4 each contain a distinctive disulfide bond. Whereas the disulfides of D1 and D4 are more traditional in nature, providing structural functions, that of D2 is referred to as an "allosteric" disulfide due to its high dihedral strain energy and relative ease of reduction that is thought to regulate CD4 structure and function by shuffling its redox state...
February 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29470931/the-need-for-sustainability-and-alignment-of-future-support-for-national-immunization-technical-advisory-groups-nitags-in-low-and-middle-income-countries
#10
Natasha Howard, Sadie Bell, Helen Walls, Laurence Blanchard, Logan Brenzel, Mark Jit, Sandra Mounier-Jack
National Immunisation Technical Advisory Groups (NITAGs) provide independent guidance to health ministries to support evidence-based and nationally relevant immunisation decisions. We examined NITAGs' value, sustainability, and need for support in low and middle-income countries, drawing from a mixed-methods study including 130 global and national-level key informant interviews. NITAGs were particularly valued for providing independent and nationally owned evidence-based decision-making (EBDM), but needed to be integrated within national processes to effectively balance independence and influence...
February 22, 2018: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29470918/early-immune-function-and-duration-of-organ-dysfunction-in-critically-ill-septic-children
#11
Jennifer A Muszynski, Ryan Nofziger, Melissa Moore-Clingenpeel, Kristin Greathouse, Larissa Anglim, Lisa Steele, Josey Hensley, Lisa Hanson-Huber, Jyotsna Nateri, Octavio Ramilo, Mark W Hall
RATIONALE: Late immune suppression is associated with nosocomial infection and mortality in septic adults and children. Relationships between early immune suppression and outcomes in septic children remain unclear. OBJECTIVE: Prospective observational study to test the hypothesis that early innate and adaptive immune suppression are associated with longer duration of organ dysfunction in children with severe sepsis/septic shock. Methods, Measurements and Main Results: Children aged < 18 years meeting consensus criteria for severe sepsis or septic shock were sampled within 48 hours of sepsis onset...
February 22, 2018: American Journal of Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/29470831/expression-and-function-of-immune-ligand-receptor-pairs-in-nk-cells-and-cancer-stem-cells-therapeutic-implications
#12
REVIEW
Ioannis A Voutsadakis
BACKGROUND: The interplay between the immune system and cancer cells has come to the forefront of cancer therapeutics, with novel immune blockade inhibitors being approved for the treatment of an increasing list of cancers. However, the majority of cancer patients still display or develop resistance to these promising drugs. It is possible that cancer stem cells (CSCs) are contributing to this therapeutic resistance. Although CSCs usually represent a small percentage of the total number of cancer cells, they are endowed with the ability of self-renewal and to produce differentiated progeny...
February 22, 2018: Cellular Oncology (Dordrecht)
https://www.readbyqxmd.com/read/29470778/guselkumab-for-the-treatment-of-psoriasis
#13
REVIEW
Álvaro Machado, Tiago Torres
Psoriasis is a common, chronic, immune-mediated, inflammatory skin disease with systemic involvement and significant impact on patients' quality of life. Several biologic treatments have been developed in recent decades, such as tumor necrosis factor (TNF)-α inhibitors, a non-selective interleukin (IL)-23 inhibitor (ustekinumab, which also inhibits IL-12), and-most recently-IL-17 inhibitors. Guselkumab is a novel biological therapy that selectively targets IL-23 and is the first-in-class selective IL-23 inhibitor approved to treat moderate-to-severe plaque psoriasis...
February 22, 2018: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/29470720/diagnostic-tools-for-inborn-errors-of-human-immunity-primary-immunodeficiencies-and-immune-dysregulatory-diseases
#14
REVIEW
Annely M Richardson, Ann M Moyer, Linda Hasadsri, Roshini S Abraham
PURPOSE OF REVIEW: The purpose of this review is to provide an overview of diagnostic testing in primary immunodeficiency and immune dysregulatory disorders (PIDDs), particularly focusing on flow cytometry and genetic techniques, utilizing specific examples of PIDDs. RECENT FINDINGS: Flow cytometry remains a vital tool in the diagnosis and monitoring of immunological diseases. Its utility ranges from cellular analysis and specific protein quantitation to functional assays and signaling pathway analysis...
February 22, 2018: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/29470693/anti-inflammatory-anti-rheumatic-and-analgesic-activities-of-2-5-mercapto-1-3-4-oxadiazol-2-yl-n-propylbenzenesulphonamide-mopbs-in-rodents
#15
Hina Rasheed, Ruqayya Afridi, Ashraf Ullah Khan, Muhammad Zia Ullah, Sidra Khalid, Ayesha Atiq, Humaira Kashif, Muhammad Naeem Ahmed, Yeong Shik Kim, Salman Khan
Chronic inflammation is pathologically associated with various clinical conditions such as rheumatoid arthritis. Several anti-inflammatory and analgesic drugs currently available in market presents a wide range of problems. Therefore, the current study was aimed to evaluate anti-inflammatory and analgesic activities of newly synthesized compound 2-(5-mercapto-1,3,4-oxadiazol-2-yl)-N-propylbenzenesulphonamide (MOPBS). Carrageenan and CFA-induced models were developed for evaluation of anti-inflammatory and analgesic activity...
February 22, 2018: Inflammopharmacology
https://www.readbyqxmd.com/read/29470537/microsomal-prostaglandin-e-synthase-1-gene-deletion-impairs-neuro-immune-circuitry-of-the-cholinergic-anti-inflammatory-pathway-in-endotoxaemic-mouse-spleen
#16
Priya Revathikumar, Johanna Estelius, Utsa Karmakar, Erwan Le Maître, Marina Korotkova, Per-Johan Jakobsson, Jon Lampa
The cholinergic anti-inflammatory pathway (CAP) is an innate neural reflex where parasympathetic and sympathetic nerves work jointly to control inflammation. Activation of CAP by vagus nerve stimulation (VNS) has paved way for novel therapeutic strategies in treating inflammatory diseases. Recently, we discovered that VNS mediated splenic acetylcholine (ACh) release and subsequent immunosuppression in response to LPS associated inflammation is impaired in mice lacking microsomal prostaglandin E synthase-1 (mPGES-1) expression, a key enzyme responsible for prostaglandin E2 synthesis...
2018: PloS One
https://www.readbyqxmd.com/read/29470349/impaired-secretion-of-tnf-%C3%AE-by-monocytes-stimulated-with-ebv-peptides-associates-with-infectious-complications-following-kidney-transplantation
#17
Patrice Vallin, Olivier Désy, Stéphanie Béland, François Bouchard-Boivin, Isabelle Houde, S A De Serres
BACKGROUND: The successful development of immunosuppressive agents has paradoxically led to an era in which adverse effects of immunosuppression, such as infections and cancer, are now a major concern in solid organ recipients. Nevertheless, the main focus of immune monitoring research remains the identification of rejection. There is currently no clinical tool to assess the net state of immunosuppression or to identify patients at increased risk of infectious complications. METHODS: We report a prospective, longitudinal study in which we conducted detailed phenotyping of over 300 peripheral blood mononuclear cell samples from 45 kidney recipients during the first 24 months posttransplant...
February 20, 2018: Transplantation
https://www.readbyqxmd.com/read/29469742/unique-urticarial-presentation-of-minocycline-induced-lupus-erythematosus
#18
Ashley K Clark, Vivian Y Shi, Raja K Sivamani
The association between guttate psoriasis and infection with group A Streptococcus (GAS) has been well established in the medical literature. However, responses to treatments aimed at GAS eradication such as systemic antibiotics or tonsillectomy are inconsistent. Further complicating treatment recommendations for a disease with a suspected microbial trigger, the standard therapy for severe psoriasis is with systemic immunosuppressant medications. This case report illustrates the role of GAS as a trigger for acute onset severe psoriasis in a child whose skin disease initially worsened with a trial of methotrexate...
August 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/29469473/-role-of-rho-gtpases-in-the-immune-regulation-of-infection-and-inflammation
#19
Zhou Wei, Yang Jun-Qi
The Rho subfamily of GTPase belongs to the Ras superfamily of small GTP binding protein, it is a nucleotide dependent protein, which plays a "molecular switch" function in the signal transduction process and control of numerous signaling pathways. Rho protein has many biological effects on cytoskeleton or target proteins as a signal converter in signal transduction, such as the regulation of membrane transport function, cell migration, cell adhesion, and cell proliferation. It also plays a very important role in the infection and immune inflammation of the body...
December 26, 2017: Zhongguo Xue Xi Chong Bing Fang Zhi za Zhi, Chinese Journal of Schistosomiasis Control
https://www.readbyqxmd.com/read/29468982/novel-patents-targeting-interleukin-17a-implications-in-cancer-and-inflammation
#20
Suncica Bjelica, Juan Francisco Santibanez
BACKGROUND: IL-17A is a founding member of the IL-17 family that has been implicated in the pathogenesis of inflammatory-associated diseases such as cancer and autoimmune disease. In cancer, IL-17A participates in many key events for tumor development, in part by affecting innate and adaptive immune system and also by direct modulation of many pro-tumor events. Moreover, IL-17A dysregulation at the site of inflammation is associated with rheumatoid arthritis, multiple sclerosis, psoriasis, among others...
February 19, 2018: Recent Patents on Anti-cancer Drug Discovery
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