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https://www.readbyqxmd.com/read/28226226/microglia-function-in-the-central-nervous-system-during-health-and-neurodegeneration
#1
Marco Colonna, Oleg Butovsky
Microglia are resident cells of the brain that regulate brain development, maintenance of neuronal networks, and injury repair. Microglia serve as brain macrophages but are distinct from other tissue macrophages owing to their unique homeostatic phenotype and tight regulation by the central nervous system (CNS) microenvironment. They are responsible for the elimination of microbes, dead cells, redundant synapses, protein aggregates, and other particulate and soluble antigens that may endanger the CNS. Furthermore, as the primary source of proinflammatory cytokines, microglia are pivotal mediators of neuroinflammation and can induce or modulate a broad spectrum of cellular responses...
February 9, 2017: Annual Review of Immunology
https://www.readbyqxmd.com/read/28225960/skin-symptoms-as-diagnostic-clue-for-autoinflammatory-diseases
#2
Alvaro Moreira, Barbara Torres, Juliano Peruzzo, Alberto Mota, Kilian Eyerich, Johannes Ring
Autoinflammatory disorders are immune-mediated diseases with increased production of inflammatory cytokines and absence of detectable autoantibodies. They course with recurrent episodes of systemic inflammation and fever is the most common symptom. Cutaneous manifestations are prevalent and important to diagnosis and early treatment of the syndromes. The purpose of this review is to emphasize to dermatologists the skin symptoms present in these syndromes in order to provide their early diagnosis.
January 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28224968/hematopoiesis-with-obesity-and-exercise-role-of-the-bone-marrow-niche
#3
Russell Emmons, Grace M Niemiro, Michael De Lisio
Hematopoietic stem and progenitor cells (HSPC), the most primitive cells of the hematopoietic system responsible for maintaining all mature blood cells, display the hallmark characteristics of self-renewal and multi-potent differentiation into mature cell lineages. HSPC activity is directed by the bone marrow niche, a complex environment composed of heterogeneous cell populations that regulate HSPC function through the secretion of a wide array of cytokines and growth factors. Diet induced obesity results in a dramatic remodeling of the bone marrow niche, skewing HSPC function resulting in a compromised immune system...
2017: Exercise Immunology Review
https://www.readbyqxmd.com/read/28224203/nucleic-acid-sensing-pattern-recognition-receptors-in-the-development-of-colorectal-cancer-and-colitis
#4
REVIEW
Liangmei He, Yayun Chen, Yuanbing Wu, Ying Xu, Zixiang Zhang, Zhiping Liu
Colorectal cancer (CRC) is a leading cause of cancer-related deaths that is often associated with inflammation initiated by activation of pattern recognition receptors (PRRs). Nucleic acid sensing PRRs are one of the major subsets of PRRs that sense nucleic acid (DNA and RNA), mainly including some members of Toll-like receptors (TLR3, 7, 8, 9), AIM2-like receptors (AIM2, IFI16), STING, cGAS, RNA polymerase III, and DExD/H box nucleic acid helicases (such as RIG-I like receptors (RIG-I, MDA5, LPG2), DDX1, 3, 5, 7, 17, 21, 41, 60, and DHX9, 36)...
February 21, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/28223235/interleukin-32-inflammation-and-cancer
#5
REVIEW
Jin Tae Hong, Dong Ju Son, Chong Kil Lee, Do-Young Yoon, Dong Hun Lee, Mi Hee Park
Interleukin-32 (IL-32) is a novel cytokine involved in inflammation and cancer development. IL-32 gene consists of eight small exons, and IL-32 mRNA has nine alternative spliced isoforms, and was thought to be secreted because it contains an internal signal sequence and lacks a transmembrane region. IL-32 is initially expressed selectively in activated T cells by mitogen and activated NK cells and their expression is strongly augmented by microbes, mitogens, and other cytokines. The IL-32 is induced mainly by pathogens and pro-inflammatory cytokines, but IL-32 is more prominent in immune cells than in non-immune tissues...
February 13, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28221900/mental-health-disorders-associated-with-foodborne-pathogens
#6
Declan J Bolton, Lucy J Robertson
Human infections with foodborne pathogenic organisms are relatively well described in terms of their overt physical symptoms, such as diarrhea, abdominal cramps, vomiting, fever, and associated sequelae. Indeed, some of these are key for diagnosis and treatment, although it should be noted that, for some foodborne pathogens, the physical symptoms might be more diffuse, particularly those associated with some of the foodborne parasites. In contrast, the impact of these pathogens on mental health is less well described, and symptoms such as depression, anxiety, and general malaise are usually ignored when foodborne infections are recorded...
November 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28220120/neutrophil-extracellular-traps-and-its-implications-in-inflammation-an-overview
#7
REVIEW
Vidal Delgado-Rizo, Marco A Martínez-Guzmán, Liliana Iñiguez-Gutierrez, Alejandra García-Orozco, Anabell Alvarado-Navarro, Mary Fafutis-Morris
In addition to physical barriers, neutrophils are considered a part of the first line of immune defense. They can be found in the bloodstream, with a lifespan of 6-8 h, and in tissue, where they can last up to 7 days. The mechanisms that neutrophils utilize for host defense are phagocytosis, degranulation, cytokine production, and, the most recently described, neutrophil extracellular trap (NET) production. NETs are DNA structures released due to chromatin decondensation and spreading, and they thus occupy three to five times the volume of condensed chromatin...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28219179/-function-and-modulation-of-type-%C3%A2-innate-lymphoid-cells-and-their-role-in-chronic-upper-airway-inflammatory-diseases
#8
Y Liu, Z Liu
Type Ⅱ innate lymphoid cells (ILC2) is a family of innate immune lymphocytes, which provide effective immune responses to cytokines. ILC2 are regulated by the nuclear transcription factor ROR alpha and GATA3, secreting cytokines IL-5 and IL-13, etc. Animal models have shown that ILC2 are involved in allergic diseases, such as asthma and atopic dermatitis, and also play a very important role in the metabolic balance. In addition, recent reports suggest that ILC2 not only play a role in the initial stages of the disease, but also can lead to chronic pathological changes in the disease, such as fibrosis, and may have an effect on acquired immunity...
February 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28218665/matrix-metalloproteinases-as-regulators-of-periodontal-inflammation
#9
REVIEW
Cavalla Franco, Hernández-Ríos Patricia, Sorsa Timo, Biguetti Claudia, Hernández Marcela
Periodontitis are infectious diseases characterized by immune-mediated destruction of periodontal supporting tissues and tooth loss. Matrix metalloproteinases (MMPs) are key proteases involved in destructive periodontal diseases. The study and interest in MMP has been fuelled by emerging evidence demonstrating the broad spectrum of molecules that can be cleaved by them and the myriad of biological processes that they can potentially regulate. The huge complexity of MMP functions within the 'protease web' is crucial for many physiologic and pathologic processes, including immunity, inflammation, bone resorption, and wound healing...
February 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28217718/pediatric-perioperative-stress-responses-and-anesthesia
#10
Koichi Yuki, Erika Matsunami, Kazumasa Tazawa, Wei Wang, James A DiNardo, Sophia Koutsogiannaki
Surgical stress responses cause an array of endocrinological, metabolic and immunological changes in patients. The landmark studies in the 1980s showed that adequate anesthesia dramatically improved the outcomes of pediatric surgical patients by attenuating stress hormonal responses, pointing out the harm of 'inadequate' anesthesia. Subsequent studies questioned the role of administering very high-dose anesthetics to further attenuate stress responses. Here we review the feature of surgical stress responses in pediatric patients including their difference from those in adult patients...
2017: Translational Perioperative and Pain Medicine
https://www.readbyqxmd.com/read/28217371/pathogenic-mechanisms-of-pancreatitis
#11
REVIEW
Murli Manohar, Alok Kumar Verma, Sathisha Upparahalli Venkateshaiah, Nathan L Sanders, Anil Mishra
Pancreatitis is inflammation of pancreas and caused by a number of factors including pancreatic duct obstruction, alcoholism, and mutation in the cationic trypsinogen gene. Pancreatitis is represented as acute pancreatitis with acute inflammatory responses and; chronic pancreatitis characterized by marked stroma formation with a high number of infiltrating granulocytes (such as neutrophils, eosinophils), monocytes, macrophages and pancreatic stellate cells (PSCs). These inflammatory cells are known to play a central role in initiating and promoting inflammation including pancreatic fibrosis, i...
February 6, 2017: World Journal of Gastrointestinal Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28216374/yin-yang-effect-of-tumor-infiltrating-b-cells-in-breast-cancer-from-mechanism-to-immunotherapy
#12
Zhigang Zhang, Ying Zhu, Zhen Wang, Ting Zhang, Pin Wu, Jian Huang
Breast cancer cells secrete chemokines, such as CXCL13, and antigens or express high endothelial venules, attracting B cells to infiltrate into the tumor microenvironment and play a "yin-yang" effect. They not only enhance the anti-tumor immune effect via secreting antibodies and influencing the Fas/FasL, CXCR4/CXCL12 and perforin pathways but they also promote the tumor to form a suppressive milieu by producing immunomodulatory factors and cytokines or using cell-to-cell education to induce the generation of Tregs or myeloid-derived suppressor cells (MDSCs)...
February 16, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28216206/applications-and-limitations-of-behaviorally-conditioned-immunopharmacological-responses
#13
Laura Lückemann, Meike Unteroberdörster, Julia Kirchhof, Manfred Schedlowski, Martin Hadamitzky
The importance of placebo responses for the treatment of various medical conditions has increasingly been recognized, whereas knowledge and systematic application in clinical settings are still sparse. One possible application for placebo responses in pharmacotherapy is given by learning paradigms, such as behaviorally conditioned immunosuppression, aiming at drug dose reduction while maintaining therapeutic efficacy of drug treatment. In an established learning paradigm of conditioned taste aversion/avoidance (CTA) in both, rats and humans, respectively, a novel-tasting drinking solution (conditioned stimulus, CS) is paired with an injection of the immunosuppressive drug cyclosporine A (CsA) as unconditioned stimulus (US)...
February 16, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28215100/targeting-baff-and-april-in-systemic-lupus-erythematosus-and-other-antibody-associated-diseases
#14
Eileen Samy, Stephen Wax, Bertrand Huard, Henry Hess, Pascal Schneider
The B cell-stimulating molecules, BAFF (B cell activating factor) and APRIL (a proliferation-inducing ligand), are critical factors in the maintenance of the B cell pool and humoral immunity. In addition, BAFF and APRIL are involved in the pathogenesis of a number of human autoimmune diseases, with elevated levels of these cytokines detected in the sera of patients with systemic lupus erythematosus (SLE), IgA nephropathy, Sjögren's syndrome, and rheumatoid arthritis. As such, both molecules are rational targets for new therapies in B cell-driven autoimmune diseases, and several inhibitors of BAFF or BAFF and APRIL together have been investigated in clinical trials...
January 2, 2017: International Reviews of Immunology
https://www.readbyqxmd.com/read/28213794/selected-cytokine-pathways-in-rheumatoid-arthritis
#15
REVIEW
Mélissa Noack, Pierre Miossec
Rheumatoid arthritis (RA) is a chronic inflammatory disease leading to joint destruction. Cytokines play a key role in its pathogenesis. They contribute to the induction and maintenance of inflammation and thus provide therapeutic targets. Many cytokines are involved in RA, and this review focuses on a few critical ones: tumor necrosis factor (TNF), interleukin (IL)-6, IL-1, IL-17, and GM-CSF. TNF and IL-6 are both well-established targets in RA treatment, and new biologic agents are reaching the market. IL-1 represents a more complex cytokine as results in humans do not reach those in animal models...
February 17, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28213399/continuous-model-of-conceptus-implantation-to-the-maternal-endometrium
#16
Kazuhiko Imakawa, Rulan Bai, Hiroshi Fujiwara, Atsushi Ideta, Yoshito Aoyagi, Kazuya Kusama
As placental morphology as well as trophoblast characteristics exhibit wide diversity across mammalian species, underling molecules were also thought to vary greatly. In the majority of cases, however, regardless of the mode of implantation, physiological and biochemical processes in conceptus implantation to the maternal endometrium including the kinds of gene expression and their products are now considered to share many similarities. In fact, recent progress has identified that in addition to the hormones, cytokines, proteases and cell adhesion molecules classically characterized, molecules related to lymphocyte homing and epithelial-mesenchymal transition (EMT) are all required for the progression of conceptus implantation to placentation...
February 17, 2017: Journal of Endocrinology
https://www.readbyqxmd.com/read/28212924/ibd-immunopathogenesis-a-comprehensive-review-of-inflammatory-molecules
#17
REVIEW
Jae Hyon Park, Laurent Peyrin-Biroulet, Michael Eisenhut, Jae Il Shin
Inflammatory molecules play a crucial role in the pathogenesis of inflammatory bowel disease (IBD) such as ulcerative colitis and Crohn's disease, both of which are chronic inflammatory conditions of the gastrointestinal tract. Abnormal expressions of pro-and anti-inflammatory molecules have been described to cause an imbalance to the gut innate and adaptive immunity, and recently a large portion of research in IBD has been geared towards identifying novel molecules that may be used as potential therapeutic targets...
February 14, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28212789/laboratory-diagnosis-of-echinococcus-spp-in-human-patients-and-infected-animals
#18
M Siles-Lucas, A Casulli, F J Conraths, N Müller
Among the species composing the genus Echinococcus, four species are of human clinical interest. The most prevalent species are Echinococcus granulosus and Echinococcus multilocularis, followed by Echinococcus vogeli and Echinococcus oligarthrus. The first two species cause cystic echinococcosis (CE) and alveolar echinococcosis (AE) respectively. Both diseases have a complex clinical management, in which laboratory diagnosis could be an adjunctive to the imaging techniques. To date, several approaches have been described for the laboratory diagnosis and followup of CE and AE, including antibody, antigen and cytokine detection...
2017: Advances in Parasitology
https://www.readbyqxmd.com/read/28210941/b-lymphocytes-in-renal-interstitial-fibrosis
#19
REVIEW
Fengge Zhu, Xueyuan Bai, Xiangmei Chen
Fibrosis is defined as an excessive deposition of extracellular matrix (ECM), which leads to the destruction of organ structure and impairment of organ function. Fibrosis occurs not only in kidney but also in lung, liver, heart, and skin. Common pathways of fibrosis are thought to exist. Renal interstitial fibrosis is a complex process that involves multiple molecular signaling and multiple cellular components, in which B cells appear to be one of the emerging important players. B cells may affect fibrosis through cytokine production and through interaction with other cells including fibroblasts, macrophages and T cells...
February 16, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28210263/a-paradigm-shift-on-the-question-of-b-cells-in-transplantation-recent-insights-on-regulating-the-alloresponse
#20
REVIEW
Daniel J Firl, Gilles Benichou, James I Kim, Heidi Yeh
B lymphocytes contribute to acute and chronic allograft rejection through their production of donor-specific antibodies (DSAs). In addition, B cells present allopeptides bound to self-MHC class II molecules and provide costimulation signals to T cells, which are essential to their activation and differentiation into memory T cells. On the other hand, both in laboratory rodents and patients, the concept of effector T cell regulation by B cells is gaining traction in the field of transplantation. Specifically, clinical trials using anti-CD20 monoclonal antibodies to deplete B cells and reverse DSA had a deleterious effect on rates of acute cellular rejection; a peculiar finding that calls into question a central paradigm in transplantation...
2017: Frontiers in Immunology
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