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Immunology review

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https://www.readbyqxmd.com/read/27914902/ppar%C3%AE-%C3%AE-a-master-regulator-of-mesenchymal-stem-cell-functions
#1
Farida Djouad, Natacha Ipseiz, Patricia Luz-Crawford, Carina Scholtysek, Gerhard Krönke, Christian Jorgensen
Peroxisome proliferator-activated receptors (PPARs) have emerged as key regulators of physiological and immunological processes. Recently, one of their members PPARβ/δ has been identified as major player in the maintenance of bone homeostasis, by promoting Wnt signalling activity in osteoblast and mesenchymal stem cells (MSC). PPARβ/δ not only controls the fate of MSC but also regulates their immunosuppressive properties by directly modulating their NF-κB activity. In this review, we discuss how the regulation of PPARβ/δ provides an innovative strategy for an optimisation of MSC-based therapy...
November 30, 2016: Biochimie
https://www.readbyqxmd.com/read/27913666/against-the-tide-the-role-of-bacterial-adhesion-in-host-colonization
#2
REVIEW
Daniel Henry Stones, Anne Marie Krachler
Evolving under the constant exposure to an abundance of diverse microbial life, the human body has developed many ways of defining the boundaries between self and non-self. Many physical and immunological barriers to microbial invasion exist, and yet bacteria have found a multitude of ways to overcome these, initiate interactions with and colonize the human host. Adhesion to host cells and tissues is a key feature allowing bacteria to persist in an environment under constant flux and to initiate transient or permanent symbioses with the host...
December 15, 2016: Biochemical Society Transactions
https://www.readbyqxmd.com/read/27913460/autoimmune-and-other-acquired-neutropenias
#3
Peter E Newburger
This educational review addresses the diagnostic evaluation of patients for autoimmune and other forms of acquired neutropenia, including the futility of deconstructing the overlap of chronic "autoimmune," "benign," and "idiopathic" categories. Isolated neutropenias caused by infection, drugs, and immunologic disorders are also addressed. Discussion of management options emphasizes a conservative approach, with largely supportive care for these mostly benign and self-limited disorders.
December 2, 2016: Hematology—the Education Program of the American Society of Hematology
https://www.readbyqxmd.com/read/27913223/hepatitis-e-virus-infection-beyond-the-liver
#4
REVIEW
S Pischke, J Hartl, S D Pas, A W Lohse, B C Jacobs, A A van der Eijk
Hepatitis E virus (HEV) infections are not limited to the liver but may also affect other organs. Several diseases, including Guillain-Barré syndrome, neuralgic amyotrophy, glomerulonephritis, cryoglobulinemia, pancreatitis, lymphoma, thrombopenia, meningitis, thyreoiditis and myocarditis have been observed in the context of hepatitis E. To date the definite pathophysiological links between HEV and extrahepatic manifestations are not yet established. However, it is suggested that HEV-infection might be causative based on serological studies, case series, in vitro data and animal models...
November 29, 2016: Journal of Hepatology
https://www.readbyqxmd.com/read/27912316/th2-cells-in-health-and-disease
#5
Toshinori Nakayama, Kiyoshi Hirahara, Atsushi Onodera, Yusuke Endo, Hiroyuki Hosokawa, Kenta Shinoda, Damon J Tumes, Yoshitaka Okamoto
Helper T (Th) cell subsets direct immune responses by producing signature cytokines. Th2 cells produce IL-4, IL-5, and IL-13, which are important in humoral immunity and protection from helminth infection and are central to the pathogenesis of many allergic inflammatory diseases. Molecular analysis of Th2 cell differentiation and maintenance of function has led to recent discoveries that have refined our understanding of Th2 cell biology. Epigenetic regulation of Gata3 expression by chromatin remodeling complexes such as Polycomb and Trithorax is crucial for maintaining Th2 cell identity...
November 28, 2016: Annual Review of Immunology
https://www.readbyqxmd.com/read/27912315/genetics-of-infectious-and-inflammatory-diseases-overlapping-discoveries-from-association-and-exome-sequencing-studies
#6
David Langlais, Nassima Fodil, Philippe Gros
Genome technologies have defined a complex genetic architecture in major infectious, inflammatory, and autoimmune disorders. High density marker arrays and Immunochips have powered genome-wide association studies (GWAS) that have mapped nearly 450 genetic risk loci in 22 major inflammatory diseases, including a core of common genes that play a central role in pathological inflammation. Whole-exome and whole-genome sequencing have identified more than 265 genes in which mutations cause primary immunodeficiencies and rare forms of severe inflammatory bowel disease...
December 1, 2016: Annual Review of Immunology
https://www.readbyqxmd.com/read/27911488/hepatocellular-carcinoma-as-an-emerging-morbidity-in-the-thalassemia-syndromes-a-comprehensive-review
#7
REVIEW
Hassan M Moukhadder, Racha Halawi, Maria Domenica Cappellini, Ali T Taher
The incidence of hepatocellular carcinoma (HCC) in patients with thalassemia is on the rise. The 2 well recognized HCC risk factors in thalassemia are iron overload and chronic viral infection with hepatitis C. The carcinogenicity of iron is related to its induction of oxidative damage, which results in genotoxicity, and to immunologic dysregulation, which attenuates cancer immune surveillance. Chronic hepatitis B and C infections lead to necroinflammation, which can prompt progression to HCC, but an independent role of hepatitis B virus in hepatic carcinogenesis among patients with thalassemia has not been demonstrated...
December 1, 2016: Cancer
https://www.readbyqxmd.com/read/27911218/aberrant-t-cell-immunity-triggered-by-human-respiratory-syncytial-virus-and-human-metapneumovirus-infection
#8
Andrea E González, Margarita K Lay, Evelyn L Jara, Janyra A Espinoza, Roberto S Gómez, Jorge Soto, Claudia A Rivera, Katia Abarca, Susan M Bueno, Claudia A Riedel, Alexis M Kalergis
Human Respiratory syncytial virus (hRSV) and human metapneumovirus (hMPV) are the two major etiological viral agents of lower respiratory tract diseases, affecting mainly infants, young children and the elderly. Although the infection of both viruses trigger an antiviral immune response that mediate viral clearance and disease resolution in immunocompetent individuals, the promotion of long-term immunity appears to be deficient and reinfection are common throughout life. A possible explanation for this phenomenon is that hRSV and hMPV, can induce aberrant T cell responses, which leads to exacerbated lung inflammation and poor T and B cell memory immunity...
December 2, 2016: Virulence
https://www.readbyqxmd.com/read/27910751/recent-advances-in-pharmacotherapeutic-paradigm-of-mild-to-recalcitrant-atopic-dermatitis
#9
Zahid Hussain, Shariza Sahudin, Hnin Ei Thu, Ahmad Nazrun Shuid, Syed Nasir Abbas Bukhari, Endang Kumolosasi
Atopic dermatitis (AD) is a common, chronic skin inflammatory disorder characterized by perivascular infiltration of immunoglobulin E (IgE), T lymphocytes, and mast cells. The key factors responsible for the pathophysiology of this disease are immunological disorders and defects in epidermal barrier properties. Pruritus, intense itching, psychological stress, deprived physical and mental performance, and sleep disturbance are the hallmark features of this dermatological disorder. Preventive interventions such as educational programs, avoidance of allergens, and exclusive care toward the skin could play a partial role in suppressing the symptoms...
2016: Critical Reviews in Therapeutic Drug Carrier Systems
https://www.readbyqxmd.com/read/27908937/the-centrosome-a-multitalented-renaissance-organelle
#10
REVIEW
Anastassiia Vertii, Heidi Hehnly, Stephen Doxsey
The centrosome acts as a microtubule-organizing center (MTOC) from the G1 to G2 phases of the cell cycle; it can mature into a spindle pole during mitosis and/or transition into a cilium by elongating microtubules (MTs) from the basal body on cell differentiation or cell cycle arrest. New studies hint that the centrosome functions in more than MT organization. For instance, it has recently been shown that a specific substructure of the centrosome-the mother centriole appendages-are required for the recycling of endosomes back to the plasma membrane...
December 1, 2016: Cold Spring Harbor Perspectives in Biology
https://www.readbyqxmd.com/read/27908931/filling-the-tank-keeping-antitumor-t-cells-metabolically-fit-for-the-long-haul
#11
REVIEW
Greg M Delgoffe
Discoveries in tumor immunology and subsequent clinical advances in cancer immunotherapy have revealed that the immune system is not oblivious to tumor progression but heavily interacts with developing neoplasia and malignancy. A major factor preventing immune destruction is the establishment of a highly immunosuppressive tumor microenvironment (TME), which provides architecture to the tumor, supports indirect means of immunosuppression such as the recruitment of tolerogenic cells like regulatory T cells and myeloid-derived suppressor cells (MDSC), and represents a zone of metabolically dearth conditions...
December 2016: Cancer Immunology Research
https://www.readbyqxmd.com/read/27908930/translating-science-into-survival-report-on-the-second-international-cancer-immunotherapy-conference
#12
Arthur N Brodsky, Vanessa M Hubbard-Lucey
On September 25-28, 2016, in New York City, the Second International Cancer Immunotherapy Conference was cohosted by the Cancer Research Institute, the American Association for Cancer Research, the Association for Cancer Immunotherapy, and the European Academy of Tumor Immunology. This exciting conference brought together more than 1,400 participants, including scientists, clinicians, investors, and regulators, to discuss the latest scientific advances within the field of cancer immunotherapy. This conference report reviews the chief themes that emerged during the 4-day meeting...
December 2016: Cancer Immunology Research
https://www.readbyqxmd.com/read/27907208/interaction-between-salmonella-and-schistosomiasis-a-review
#13
REVIEW
Amber Hsiao, Trevor Toy, Hye Jin Seo, Florian Marks
The interaction between schistosomiasis and Salmonella is a particularly important issue in Africa, where dual infection by the parasite and the bacterium are likely common. In this review, the ways in which schistosomiasis affects human biology as it relates to Salmonella are described. Those who are infected by both organisms experience reduced immunological functioning, exhibit irreversible organ damage due to prolonged schistosomiasis infection, and become latent carriers of Salmonella enterica serotypes Typhi and Paratyphi and S...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27906830/heterotopic-abdominal-rat-heart-transplantation-as-a-model-to-investigate-volume-dependency-of-myocardial-remodeling
#14
Kálmán Benke, Alex Ali Sayour, Csaba Mátyás, Bence Ágg, Balázs Tamás Németh, Attila Oláh, Mihály Ruppert, István Hartyánszky, Zoltán Szabolcs, Tamás Radovits, Béla Merkely, Gábor Szabó
Heterotopic abdominal rat heart transplantation has been extensively used to investigate ischemic/reperfusion injury, immunological consequences during heart transplantations and also to study remodeling of the myocardium due to volume unloading. We provide a unique review on the latter and present a summary of the experimental studies on rat heart transplantation to illustrate changes that occur to the myocardium due to volume unloading. We divided the literature based on whether normal or failing rat heart models were used...
December 1, 2016: Transplantation
https://www.readbyqxmd.com/read/27905261/beneath-the-sword-of-damocles-regenerative-medicine-and-the-shadow-of-immunogenicity
#15
Paul J Fairchild, Christopher Horton, Priyoshi Lahiri, Kumaran Shanmugarajah, Timothy J Davies
Few topics in regenerative medicine have inspired such impassioned debate as the immunogenicity of cell types and tissues differentiated from pluripotent stem cells. While early predictions suggested that tissues derived from allogeneic sources may evade immune surveillance altogether, the pendulum has since swung to the opposite extreme, with reports that the ectopic expression of a few developmental antigens may prompt rejection, even of tissues differentiated from autologous cell lines. Here we review the evidence on which these contradictory claims are based in order to reach an objective assessment of the likely magnitude of the immunological challenges ahead...
December 1, 2016: Regenerative Medicine
https://www.readbyqxmd.com/read/27904525/exosomes-as-nanocarriers-for-sirna-delivery-paradigms-and-challenges
#16
Fahimeh Shahabipour, Maciej Banach, Amirhossein Sahebkar
Exosomes are nano-sized vesicles that facilitate intercellular communications through carrying genetic materials and functional biomolecules. Owing to their unique size and structure, exosomes have emerged as a useful tool to overcome the limitations of siRNA delivery. The use of exosomes as siRNA delivery vehicles lacks certain disadvantages of the existing foreign delivery systems such as viruses, polycationic polymers and liposomes, and introduces several advantages including inherent capacity to pass through biological barriers and escape from phagocytosis by the reticuloendothelial system, as well as being biocompatible, non-toxic, and immunologically inert...
December 1, 2016: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/27904185/topical-therapy-in-atopic-dermatitis-in-children
#17
Dharshini Sathishkumar, Celia Moss
Atopic dermatitis (AD) is a common, chronic childhood skin disorder caused by complex genetic, immunological, and environmental interactions. It significantly impairs quality of life for both child and family. Treatment is complex and must be tailored to the individual taking into account personal, social, and emotional factors, as well as disease severity. This review covers the management of AD in children with topical treatments, focusing on: education and empowerment of patients and caregivers, avoidance of trigger factors, repair and maintenance of the skin barrier by correct use of emollients, control of inflammation with topical corticosteroids and calcineurin inhibitors, minimizing infection, and the use of bandages and body suits...
November 2016: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/27903713/-trained-immunity-consequences-for-lymphoid-malignancies
#18
REVIEW
Wendy B C Stevens, Mihai G Netea, Arnon P Kater, Walter J F M van der Velden
In hematological malignancies complex interactions exist between the immune system, microorganisms and malignant cells. On one hand, microorganisms can induce cancer, as illustrated by specific infection-induced lymphoproliferative diseases such as Helicobacter pylori-associated gastric mucosa-associated lymphoid tissue lymphoma. On the other hand, malignant cells create an immunosuppressive environment for their own benefit, but this also results in an increased risk of infections. Disrupted innate immunity contributes to the neoplastic transformation of blood cells by several mechanisms, including the uncontrolled clearance of microbial and autoantigens resulting in chronic immune stimulation and proliferation, chronic inflammation, and defective immune surveillance and anti-cancer immunity...
December 2016: Haematologica
https://www.readbyqxmd.com/read/27902502/zika-virus-and-patient-blood-management
#19
Lawrence T Goodnough, Marisa B Marques
Sporadic Zika virus infections had only occurred in Africa and Asia until an outbreak in Micronesia (Oceania) in 2007. In 2013 to 2014, several outer Pacific Islands reported local outbreaks. Soon thereafter, the virus was likely introduced in Brazil from competing athletes from French Polynesia and other countries that participated in a competition there. Transmission is thought to have occurred through mosquito bites and spread to the immunologically naive population. Being also a flavivirus, the Zika virus is transmitted by the Aedes mosquito that is endemic in South and Central America that is also the vector of West Nile virus, dengue, and chikungunya...
November 29, 2016: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/27900676/functional-implications-of-the-il-23-il-17-immune-axis-in-schizophrenia
#20
REVIEW
Monojit Debnath, Michael Berk
The aetiology of schizophrenia seems to stem from complex interactions amongst environmental, genetic, metabolic, immunologic and oxidative components. Chronic low-grade inflammation has been persistently linked to schizophrenia, and this has primarily been based on the findings derived from Th1/Th2 cytokine balance. While the IL-23/IL-17 axis plays crucial role in the pathogenesis of several immune-mediated disorders, it has remained relatively unexplored in neuropsychiatric disorders. Altered levels of cytokines related to IL-23/IL-17 axis have been observed in schizophrenia patients in a few studies...
November 29, 2016: Molecular Neurobiology
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