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https://www.readbyqxmd.com/read/28431250/nuclear-proximity-of-mtr4-to-rna-exosome-restricts-dna-mutational-asymmetry
#1
Junghyun Lim, Pankaj Kumar Giri, David Kazadi, Brice Laffleur, Wanwei Zhang, Veronika Grinstein, Evangelos Pefanis, Lewis M Brown, Erik Ladewig, Ophélie Martin, Yuling Chen, Raul Rabadan, François Boyer, Gerson Rothschild, Michel Cogné, Eric Pinaud, Haiteng Deng, Uttiya Basu
The distribution of sense and antisense strand DNA mutations on transcribed duplex DNA contributes to the development of immune and neural systems along with the progression of cancer. Because developmentally matured B cells undergo biologically programmed strand-specific DNA mutagenesis at focal DNA/RNA hybrid structures, they make a convenient system to investigate strand-specific mutagenesis mechanisms. We demonstrate that the sense and antisense strand DNA mutagenesis at the immunoglobulin heavy chain locus and some other regions of the B cell genome depends upon localized RNA processing protein complex formation in the nucleus...
April 20, 2017: Cell
https://www.readbyqxmd.com/read/28430618/t-2-mycotoxin-toxicological-effects-and-decontamination-strategies
#2
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...
February 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28429355/lewy-pathological-study-on-%C3%AE-synuclein-in-gastrointestinal-tissues-of-prodromal-parkinson-s-disease
#3
Q-B Lu, Z-F Zhu, H-P Zhang, W-F Luo
OBJECTIVE: In the gastrointestinal neural system, the emergence of Lewy Body (LB) is usually earlier than the clinical diagnosis of Parkinson (PD) motor symptoms. Therefore, this study is aimed to explore whether the LB in the gastrointestinal tract of prodromal PD patients. PATIENTS AND METHODS: 98 paraffin embedded tissue specimens from 57 PD patients were collected in the Second Affiliated Hospital of Soochow University archives, as well as 98 tissue specimens of 90 non-PD patients undergone surgical resection...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28427937/reactivity-of-anti-hnk-1-antibodies-to-branched-o-mannose-glycans-associated-with-demyelination
#4
Kanoko Sakuda, Yasuhiko Kizuka, Yoshiki Yamaguchi, Katsunori Tanaka, Ken Ogiwara, Tatsuya Segawa, Yoshiaki Hagiwara, Ichiro Matsuo, Haruko Ogawa, Naoyuki Taniguchi, Shinobu Kitazume
Human natural killer-1 (HNK-1) epitope, a highly-expressed glycan in the nervous system, is critical for normal synaptic plasticity and spatial learning. HNK-1 epitope modifies N-glycans on several neural glycoproteins, and also modifies O-mannosyl glycans. A branching enzyme for O-mannosyl glycans (GnT-IX, Core M2 synthase) exhibits brain-specific expression, and the product core M2 glycans are also limited to the brain. In a previous study, we showed that cuprizone-induced demyelination increased HNK-1-capped core M2 glycan expression, while GnT-IX deficiency ameliorated demyelination, suggesting that these glycans could be useful diagnostic markers for demyelination status and act as therapeutic targets...
April 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28423529/pif-promotes-brain-re-myelination-locally-while-regulating-systemic-inflammation-clinically-relevant-multiple-sclerosis-m-smegmatis-model
#5
Giuseppe Migliara, Martin Mueller, Alessia Piermattei, Chaya Brodie, Michael J Paidas, Eytan R Barnea, Francesco Ria
Neurologic disease diagnosis and treatment is challenging. Multiple Sclerosis (MS) is a demyelinating autoimmune disease with few clinical forms and uncertain etiology. Current studies suggest that it is likely caused by infection(s) triggering a systemic immune response resulting in antigen/non-antigen-related autoimmune response in central nervous system (CNS). New therapeutic approaches are needed. Secreted by viable embryos, PreImplantation Factor (PIF) possesses a local and systemic immunity regulatory role...
March 28, 2017: Oncotarget
https://www.readbyqxmd.com/read/28423034/elevated-frequencies-of-cd8-t-cells-expressing-pd-1-ctla-4-and-tim-3-within-tumour-from-perineural-squamous-cell-carcinoma-patients
#6
Richard Linedale, Campbell Schmidt, Brigid T King, Annabelle G Ganko, Fiona Simpson, Benedict J Panizza, Graham R Leggatt
Perineural spread of tumour cells along cranial nerves is a severe complication of primary cutaneous squamous cell carcinomas of the head and neck region. While surgical excision of the tumour is the treatment of choice, removal of all the tumour is often complicated by the neural location and recurrence is frequent. Non-invasive immune treatments such as checkpoint inhibitor blockade may be useful in this set of tumours although little is understood about the immune response to perineural spread of squamous cell carcinomas...
2017: PloS One
https://www.readbyqxmd.com/read/28416717/essential-neuroscience-in-immunology
#7
REVIEW
Sangeeta S Chavan, Kevin J Tracey
The field of immunology is principally focused on the molecular mechanisms by which hematopoietic cells initiate and maintain innate and adaptive immunity. That cornerstone of attention has been expanded by recent discoveries that neuronal signals occupy a critical regulatory niche in immunity. The discovery is that neuronal circuits operating reflexively regulate innate and adaptive immunity. One particularly well-characterized circuit regulating innate immunity, the inflammatory reflex, is dependent upon action potentials transmitted to the reticuloendothelial system via the vagus and splenic nerves...
May 1, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28406804/subjective-general-health-and-the-social-regulation-of-hypothalamic-activity
#8
Casey L Brown, Lane Beckes, Joseph P Allen, James A Coan
OBJECTIVE: Social support is associated with better health. This association may be partly mediated through the social regulation of adrenomedullary activity related to poor cardiovascular health and glucocorticoid activity known to inhibit immune functioning. These physiological cascades originate in the hypothalamic areas that are involved in the neural response to threat. We investigated whether the down regulation, by social support, of hypothalamic responses to threat is associated with better subjective health...
April 12, 2017: Psychosomatic Medicine
https://www.readbyqxmd.com/read/28394883/pdgf-signalling-guides-neural-crest-contribution-to-the-haematopoietic-stem-cell-specification-niche
#9
Erich W Damm, Wilson K Clements
Haematopoietic stem cells (HSCs) support maintenance of the haematopoietic and immune systems throughout the life of vertebrates, and are the therapeutic component of bone marrow transplants. Understanding native specification of HSCs, to uncover key signals that might help improve in vitro directed differentiation protocols, has been a long-standing biomedical goal. The current impossibility of specifying true HSCs in vitro suggests that key signals remain unknown. We speculated that such signals might be presented by surrounding 'niche' cells, but no such cells have been defined...
April 10, 2017: Nature Cell Biology
https://www.readbyqxmd.com/read/28388425/-neural-killer-cells-autologous-cytotoxic-neural-stem-cells-for-fighting-glioma
#10
Naresh Mutukula, Yechiel Elkabetz
Recently in Science Translational Medicine, Bagó et al. (2017) reported an advance in treating glioblastoma using tumor-homing cytotoxic induced neural stem cells (h-iNSC(TE)). This approach circumvents problems associated with immune rejection and minimizes the bench-to-clinic time window critical for these patients.
April 6, 2017: Cell Stem Cell
https://www.readbyqxmd.com/read/28385921/the-effects-of-physical-exercise-on-non-motor-symptoms-and-on-neuroimmune-rage-network-in-experimental-parkinsonism
#11
Sofia D Viana, Inês R Pita, Cristina Lemos, Daniel Rial, Patrícia Couceiro, Paulo Rodrigues-Santos, Francisco Caramelo, Félix Carvalho, Syed F Ali, Rui D Prediger, Carlos A Fontes Ribeiro, Frederico C Pereira
Parkinson's disease (PD) prodromic stages comprise neuropsychiatric perturbations that critically compromise patient's quality of life. These non-motor symptoms (NMS) are associated with exacerbated innate immunity, a hallmark of overt PD. Physical exercise (PE) has the potential to improve neuropsychiatric deficits and to modulate immune network including receptors for advanced glycation endproducts (RAGE) and Toll-like receptors (TLRs) in distinct pathological settings. Accordingly, the present study aimed to test the hypothesis that PE i) alleviates PD NMS and ii) modulates neuroimmune RAGE-network in experimental PD...
April 6, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28385632/ultrastructural-characterization-of-tumor-necrosis-factor-alpha-receptor-type-1-distribution-in-the-hypothalamic-paraventricular-nucleus-of-the-mouse
#12
Michael J Glass, June Chan, Virginia M Pickel
The immune/inflammatory signaling molecule tumor necrosis factor α (TNFα) is an important mediator of both constitutive and plastic signaling in the brain. In particular, TNFα is implicated in physiological processes, including fever, energy balance, and autonomic function, known to involve the hypothalamic paraventricular nucleus (PVN). Many critical actions of TNFα are transduced by the TNFα type 1 receptor (TNFR1), whose activation has been shown to potently modulate classical neural signaling. There is, however, little known about the cellular sites of action for TNFR1 in the PVN...
April 4, 2017: Neuroscience
https://www.readbyqxmd.com/read/28382875/effects-of-environmental-enrichment-and-regrouping-on-natural-autoantibodies-binding-danger-and-neural-antigens-in-healthy-pigs-with-different-individual-characteristics
#13
L Luo, R Geers, I Reimert, B Kemp, H K Parmentier, J E Bolhuis
Pigs living in commercial husbandry systems may experience both acute stress due to standard management procedures and chronic stress through limitations in their barren housing environment. This might influence their immune status, including antibody responses to neural and danger autoantigens. Levels of natural autoantibody (NAAb)-binding phosphorylcholine-conjugated bovine serum albumin (PC-BSA) and myelin basic protein (MBP) were measured over time in pigs that were kept in environmental enriched v. barren housing, and that underwent a regrouping test...
April 6, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28372330/the-gut-microbiota-and-alzheimer-s-disease
#14
Chunmei Jiang, Guangning Li, Pengru Huang, Zhou Liu, Bin Zhao
The gut microbiota comprises a complex community of microorganism species that resides in our gastrointestinal ecosystem and whose alterations influence not only various gut disorders but also central nervous system disorders such as Alzheimer's disease (AD). AD, the most common form of dementia, is a neurodegenerative disorder associated with impaired cognition and cerebral accumulation of amyloid-β peptides (Aβ). Most notably, the microbiota-gut-brain axis is a bidirectional communication system that is not fully understood, but includes neural, immune, endocrine, and metabolic pathways...
March 29, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28369068/all-trans-retinoic-acid-suppresses-the-angiopoietin-tie2-pathway-and-inhibits-angiogenesis-and-metastasis-in-esophageal-squamous-cell-carcinoma
#15
Na Li, Yanjuan Lu, Daoming Li, Xiangyu Zheng, Jingyao Lian, Shanshan Li, Huijuan Cui, Linda Zhang, Luqian Sang, Ying Wang, Jane J Yu, Taiying Lu
Esophageal squamous cell carcinoma (ESCC) is the second common cancer in Henan province and is well-known for aggressiveness and dismal prognosis. Adjuvant therapies, chemotherapy, radiotherapy and endoscopic treatment have not improved survival rates in patients with late stage esophageal carcinoma. All-trans retinoic acid (ATRA) is the active ingredient of Vitamin A and affects a wide spectrum of biological processes including development, growth, neural function, immune function, reproduction, and vision...
2017: PloS One
https://www.readbyqxmd.com/read/28368416/sox2-is-dispensable-for-primary-melanoma-and-metastasis-formation
#16
S M Schaefer, C Segalada, P F Cheng, M Bonalli, V Parfejevs, M P Levesque, R Dummer, S K Nicolis, L Sommer
Tumor initiation and metastasis formation in many cancers have been associated with emergence of a gene expression program normally active in embryonic or organ-specific stem cells. In particular, the stem cell transcription factor Sox2 is not only expressed in a variety of tumors, but is also required for their formation. Melanoma, the most aggressive skin tumor, derives from melanocytes that during development originate from neural crest stem cells. While neural crest stem cells do not express Sox2, expression of this transcription factor has been reported in melanoma...
April 3, 2017: Oncogene
https://www.readbyqxmd.com/read/28367116/microglial-intracellular-ca-2-signaling-in-synaptic-development-and-its-alterations-in-neurodevelopmental-disorders
#17
REVIEW
Yoshito Mizoguchi, Akira Monji
Autism spectrum disorders (ASDs) are neurodevelopmental disorders characterized by deficits in social interaction, difficulties with language and repetitive/restricted behaviors. Microglia are resident innate immune cells which release many factors including proinflammatory cytokines, nitric oxide (NO) and brain-derived neurotrophic factor (BDNF) when they are activated in response to immunological stimuli. Recent in vivo imaging has shown that microglia sculpt and refine the synaptic circuitry by removing excess and unwanted synapses and be involved in the development of neural circuits or synaptic plasticity thereby maintaining the brain homeostasis...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28362944/zika-virus-infects-human-fetal-brain-microglia-and-induces-inflammation
#18
Fok-Moon Lum, Donovan K S Low, Yiping Fan, Jeslin J L Tan, Bernett Lee, Jerry K Y Chan, Laurent Rénia, Florent Ginhoux, Lisa F P Ng
Background: The unprecedented reemergence of Zika virus (ZIKV) has startled the world with reports of increased microcephaly in Brazil. ZIKV can infect human neural progenitors and impair brain growth. However, direct evidence of ZIKV infection in human fetal brain tissues remains elusive. Methods: Investigations were performed with brain cell preparations obtained from 9 donors. Virus infectivity was assessed by detection of virus antigen by flow cytometry together with various hematopoietic cell surface markers...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28360866/from-toxoplasmosis-to-schizophrenia-via-nmda-dysfunction-peptide-overlap-between-toxoplasma-gondii-and-n-methyl-d-aspartate-receptors-as-a-potential-mechanistic-link
#19
Guglielmo Lucchese
The present work aims at investigating how Toxoplasma gondii (T. gondii) infection may be linked to N-methyl-d-aspartate receptor (NMDAR) dysfunction in schizophrenia and related disorders and puts forward the hypothesis that immune responses against T. gondii may involve NMDARs. Indeed, the analysis of the protozoan proteome and NMDAR subunits for peptide commonalities shows a massive peptide overlap and supports the possibility that anti-T. gondii immune responses raised during active protozoan infection may cross-react with host NMDARs, determining disruption of neural circuits and cognitive deficits...
2017: Frontiers in Psychiatry
https://www.readbyqxmd.com/read/28349242/host-virus-interaction-of-zika-virus-in-modulating-disease-pathogenesis
#20
REVIEW
Nanda Kishore Routhu, Siddappa N Byrareddy
The Zika virus (ZIKV) is a newly emerging pathogen that has resulted in a worldwide epidemic. It primarily spreads either through infected Aedes aegypti or Aedes albopictus mosquitos leading to severe neurological disorders such as microcephaly and Guillain-Barré syndrome in susceptible individuals. The mode of ZIKV entry into specific cell types such as: epidermal keratinocytes, fibroblasts, immature dendritic cells (iDCs), and stem-cell-derived human neural progenitors has been determined through its major surface envelope glycoprotein...
March 27, 2017: Journal of Neuroimmune Pharmacology: the Official Journal of the Society on NeuroImmune Pharmacology
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