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https://www.readbyqxmd.com/read/27926943/the-mouse-cytomegalovirus-gene-m42-targets-surface-expression-of-the-protein-tyrosine-phosphatase-cd45-in-infected-macrophages
#1
Nadine Thiel, Kirsten A Keyser, Niels A W Lemmermann, Jennifer D Oduro, Karen Wagner, Carina Elsner, Anne Halenius, Tihana Lenac Roviš, Melanie M Brinkmann, Stipan Jonjić, Luka Cicin-Sain, Martin Messerle
The receptor-like protein tyrosine phosphatase CD45 is expressed on the surface of cells of hematopoietic origin and has a pivotal role for the function of these cells in the immune response. Here we report that following infection of macrophages with mouse cytomegalovirus (MCMV) the cell surface expression of CD45 is drastically diminished. Screening of a set of MCMV deletion mutants allowed us to identify the viral gene m42 of being responsible for CD45 down-modulation. Moreover, expression of m42 independent of viral infection upon retroviral transduction of the RAW264...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27904582/the-role-of-peroxisome-proliferator-activated-receptor-coactivator-1-gene-in-skin-aging
#2
REVIEW
Shahrzad Aghaei, Mohammad Ali Nilforoushzadeh, Maryam Aghaei
Skin aging is a continuous process that exhibits fine and deep wrinkles, thin and transparent skin, loss of underlying fat, dry skin and itch, following decreased collagen and elastin synthesis. Both extrinsic and intrinsic agents are considered in the pathogenesis on skin aging. Extrinsic factors such as sun exposure, windy and dry weather, nutrition, and lifestyle may induce premature aging, toxic-free radicals, and reactive oxygen species due to decreasing normal function of mitochondria which play the major intrinsic factors in premature skin aging...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27902570/preprotachykinin-a-ppta-is-expressed-by-a-distinct-population-of-excitatory-neurons-in-the-mouse-superficial-spinal-dorsal-horn-including-cells-that-respond-to-noxious-and-pruritic-stimuli
#3
Maria Gutierrez-Mecinas, Andrew M Bell, Alina Marin, Rebecca Taylor, Kieran A Boyle, Takahiro Furuta, Masahiko Watanabe, Erika Polgár, Andrew J Todd
The superficial dorsal horn, which is the main target for nociceptive and pruritoceptive primary afferents, contains a high density of excitatory interneurons. Our understanding of their roles in somatosensory processing has been restricted by the difficulty of distinguishing functional populations among these cells. We recently defined three non-overlapping populations among the excitatory neurons, based on the expression of neurotensin, neurokinin B (NKB) and gastrin-releasing peptide (GRP). Here we identify and characterise another population: neurons that express the tachykinin peptide substance P...
November 25, 2016: Pain
https://www.readbyqxmd.com/read/27899527/biased-agonists-of-the-kappa-opioid-receptor-suppress-pain-and-itch-without-causing-sedation-or-dysphoria
#4
Tarsis F Brust, Jenny Morgenweck, Susy A Kim, Jamie H Rose, Jason L Locke, Cullen L Schmid, Lei Zhou, Edward L Stahl, Michael D Cameron, Sarah M Scarry, Jeffrey Aubé, Sara R Jones, Thomas J Martin, Laura M Bohn
Agonists targeting the kappa opioid receptor (KOR) have been promising therapeutic candidates because of their efficacy for treating intractable itch and relieving pain. Unlike typical opioid narcotics, KOR agonists do not produce euphoria or lead to respiratory suppression or overdose. However, they do produce dysphoria and sedation, side effects that have precluded their clinical development as therapeutics. KOR signaling can be fine-tuned to preferentially activate certain pathways over others, such that agonists can bias signaling so that the receptor signals through G proteins rather than other effectors such as βarrestin2...
November 29, 2016: Science Signaling
https://www.readbyqxmd.com/read/27822542/rna-sequencing-based-genome-reannotation-of-the-dermatophyte-arthroderma-benhamiae-and-characterization-of-its-secretome-and-whole-gene-expression-profile-during-infection
#5
Van Du T Tran, Niccolò De Coi, Marc Feuermann, Emanuel Schmid-Siegert, Elena-Tatiana Băguţ, Bernard Mignon, Patrice Waridel, Corinne Peter, Sylvain Pradervand, Marco Pagni, Michel Monod
Dermatophytes are the most common agents of superficial mycoses in humans and animals. The aim of the present investigation was to systematically identify the extracellular, possibly secreted, proteins that are putative virulence factors and antigenic molecules of dermatophytes. A complete gene expression profile of Arthroderma benhamiae was obtained during infection of its natural host (guinea pig) using RNA sequencing (RNA-seq) technology. This profile was completed with those of the fungus cultivated in vitro in two media containing either keratin or soy meal protein as the sole source of nitrogen and in Sabouraud medium...
July 2016: MSystems
https://www.readbyqxmd.com/read/27813070/atopic-dermatitis-a-tale-of-two-distinct-pathomechanisms-that-make-you-itch
#6
Edward F Knol, DirkJan Hijnen
Atopic dermatitis (AD) or eczema is the most common chronic inflammatory skin disease. It is a multifactorial disease with local and systemic immune changes. Current therapies focus on restoring the local skin barrier or inhibiting immune responses. In this issue of the European Journal of Immunology, Sehra et al. [Eur. J. Immunol. 2016. 46:2609-2613] describe a mouse model with T-cell-specific expression of constitutively active Stat6 in Flaky tail mice, which have mutations in the Flg and Tmem79 genes. The authors describe that it is the combination of changes in the skin barrier proteins filaggrin and Tmem79, together with Th2 cytokine signaling in the constitutively active Stat6 transgene, that drives the immune-pathomechanism in AD...
November 2016: European Journal of Immunology
https://www.readbyqxmd.com/read/27746639/effects-of-emollient-containing-bee-venom-on-atopic-dermatitis-a-double-blinded-randomized-base-controlled-multicenter-study-of-136-patients
#7
Chung Eui You, Seok Hoon Moon, Kwang Hoon Lee, Kyu Han Kim, Chun Wook Park, Seong Joon Seo, Sang Hyun Cho
BACKGROUND: Atopic dermatitis (AD) is a common, complex disease that follows a chronic relapsing course and significantly affects the quality of life of patients. Skin barrier dysfunction and inflammatory processes induce and aggravate this skin condition. Proper use of an emollient for hydration is a keystone of AD treatment. Bee venom is known to have anti-inflammatory effects and has been widely used in traditional medicine to treat various inflammatory disorders. OBJECTIVE: To find out the beneficial effect of an emollient containing bee venom in the treatment of patients with AD...
October 2016: Annals of Dermatology
https://www.readbyqxmd.com/read/27736772/tax1bp1-restrains-virus-induced-apoptosis-by-facilitating-itch-mediated-degradation-of-the-mitochondrial-adaptor-mavs
#8
Young Bong Choi, Noula Shembade, Kislay Parvatiyar, Siddharth Balachandran, Edward William Harhaj
The host response to RNA virus infection consists of an intrinsic innate immune response and the induction of apoptosis as mechanisms to restrict viral replication. The mitochondrial adaptor molecule MAVS plays critical roles in coordinating both virus-induced type I interferon production and apoptosis; however, the regulation of MAVS-mediated apoptosis is poorly understood. Here, we show that the adaptor protein TAX1BP1 functions as a negative regulator of virus-induced apoptosis. TAX1BP1-deficient cells are highly sensitive to apoptosis in response to infection with the RNA viruses vesicular stomatitis virus and Sendai virus and transfection with poly(I:C)...
October 10, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27671605/fibroblast-growth-factor-23-and-calcium-binding-proteins-are-not-associated-with-chronic-itch-in-patients-on-haemodialysis
#9
Thomas Mettang, Kevin Kunzmann, Heinz-Jürgen Roth, Elke Weisshaar
is missing (Short communication).
September 27, 2016: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/27606610/the-schnitzler-syndrome-chronic-urticaria-in-disguise-a-single-centre-report-of-11-cases-and-a-critical-reappraisal-of-the-literature
#10
Steven Vanderschueren, Annelien van der Veen
OBJECTIVES: The Schnitzler syndrome is a rare inflammatory disorder, with a chronic urticaria-like rash and an IgM (rarely IgG) monoclonal gammopathy as cardinal features. Interleukin-1 β is regarded as the key mediator and the interleukin-1 receptor antagonist anakinra has been proposed as first-line treatment. This case series of eleven patients is intended to enhance disease awareness and to compare our centre's experience with that of literature. METHODS: We describe the clinical features and disease course of 11 patients with a definite Schnitzler syndrome, according to the Strasbourg diagnostic criteria, encountered in the University Hospital, Leuven, Belgium, between 1995 and 2015...
August 31, 2016: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/27578003/wnt-signaling-promotes-breast-cancer-by-blocking-itch-mediated-degradation-of-yap-taz-transcriptional-coactivator-wbp2
#11
Shen Kiat Lim, Ssu Yi Lu, Shin-Ae Kang, Hock Jin Tan, Zilin Li, Zhen Ning Adrian Wee, Jye Swei Guan, Vishnu Priyanka Reddy Chichili, J Sivaraman, Thomas Putti, Aye Aye Thike, Puay Hoon Tan, Marius Sudol, David M Virshup, Siew Wee Chan, Wanjin Hong, Yoon Pin Lim
Cross-talk between the Hippo and Wnt pathways has been implicated recently in breast cancer development, but key intersections have yet to be fully defined. Here we report that WBP2, a transcription coactivator that binds the Hippo pathway transcription factor YAP/TAZ, contributes to Wnt signaling and breast cancer pathogenesis. Clinically, overexpression of WBP2 in breast cancer specimens correlated with malignant progression and poor patient survival. In breast cancer cells, nuclear entry and interaction of WBP2 with β-catenin was stimulated by Wnt3A, thereby activating TCF-mediated transcription and driving malignant invasive character...
November 1, 2016: Cancer Research
https://www.readbyqxmd.com/read/27566399/involvement-of-trpv1-and-tdag8-in%C3%A2-pruriception-associated-with-noxious%C3%A2-acidosis
#12
Shing-Hong Lin, Martin Steinhoff, Akihiko Ikoma, Yen-Ching Chang, Yuan-Ren Cheng, Ravi Chandra Kopparaju, Satoshi Ishii, Wei-Hsin Sun, Chih-Cheng Chen
Itch and pain are closely related but are distinct sensations. Intradermal injection of acid generates pain in both rodents and humans; however, few studies have addressed the intriguing question of whether acid (protons) can evoke itch like other algogens by spatial contrast activation of single nociceptors. Here, we report that (i) citric acid (0.2 mol/L) pH-dependently induced a scratching response in mice when applied intradermally to nape or cheek skin, (ii) acidified buffer elevated intracellular calcium levels in dorsal root ganglion pruriceptors, and (iii) injection of intradermal citric acid (pH 3...
August 24, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27491560/stimulation-of-the-histamine-4-receptor-upregulates-thymic-stromal-lymphopoietin-tslp-in-human-and-murine-keratinocytes
#13
Katrin Schaper, Kristine Rossbach, Brigitta Köther, Holger Stark, Manfred Kietzmann, Thomas Werfel, Ralf Gutzmer
The cytokine thymic stromal lymphopoietin (TSLP) is involved in the development and the progression of allergic diseases. It is mainly released by epithelial cells at barriers such as skin and gut in response to danger signals. Overexpression of TSLP in keratinocytes (KC) can provoke the development of a type 2 inflammatory response. Additionally, TSLP directly acts on sensory neurons and thereby triggers itch. Since histamine is also increased in lesions of inflammatory skin diseases, the aim of this study was to investigate possible effects of histamine as well as different histamine receptor subtype agonists and antagonists on TSLP production in KC...
August 1, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27489272/itch-e3-ubiquitin-ligase-interacts-with-ebola-virus-vp40-to-regulate-budding
#14
Ziying Han, Cari A Sagum, Mark T Bedford, Sachdev S Sidhu, Marius Sudol, Ronald N Harty
UNLABELLED: Ebola virus (EBOV) and Marburg virus (MARV) belong to the Filoviridae family and can cause outbreaks of severe hemorrhagic fever, with high mortality rates in humans. The EBOV VP40 (eVP40) and MARV VP40 (mVP40) matrix proteins play a central role in virion assembly and egress, such that independent expression of VP40 leads to the production and egress of virus-like particles (VLPs) that accurately mimic the budding of infectious virus. Late (L) budding domains of eVP40 recruit host proteins (e...
October 15, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27466427/the-ubiquitin-ligase-itch-and-ubiquitination-regulate-bfrf1-mediated-nuclear-envelope-modification-for-epstein-barr-virus-maturation
#15
Chung-Pei Lee, Guan-Ting Liu, Hsiu-Ni Kung, Po-Ting Liu, Yen-Tzu Liao, Lu-Ping Chow, Ling-Shih Chang, Yu-Hsin Chang, Chou-Wei Chang, Wen-Chi Shu, Annie Angers, Antonella Farina, Su-Fang Lin, Ching-Hwa Tsai, Fadila Bouamr, Mei-Ru Chen
UNLABELLED: The cellular endosomal sorting complex required for transport (ESCRT) was recently found to mediate important morphogenesis processes at the nuclear envelope (NE). We previously showed that the Epstein-Barr virus (EBV) BFRF1 protein recruits the ESCRT-associated protein Alix to modulate NE structure and promote EBV nuclear egress. Here, we uncover new cellular factors and mechanisms involved in this process. BFRF1-induced NE vesicles are similar to those observed following EBV reactivation...
October 15, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27461980/combined-proteomics-and-transcriptomics-identifies-sting-related-toxins-of-jellyfish-cyanea-nozakii
#16
Rongfeng Li, Huahua Yu, Yang Yue, Song Liu, Ronge Xing, Xiaolin Chen, Pengcheng Li
UNLABELLED: Jellyfish sting has become a worldwide issue of critical concern to human health and safety in coastal areas in recent decades. Cyanea nozakii is one of the dominant blooming species and dangerous stingers in China. However, it remains unclear how many and what types of toxins are present in the venom. So, we used a combined transcriptomics and proteomics approach to investigate the venom composition of jellyfish C. nozakii. In total 4,608,524 Illumina valid reads were obtained to de novo assemble to 40,434 unigenes in the transcriptomics analysis...
October 4, 2016: Journal of Proteomics
https://www.readbyqxmd.com/read/27451942/recombinant-fusion-esat6-cfp10-immunogen-as-a-skin-test-reagent-for-tuberculosis-diagnosis-an-open-label-randomized-two-centre-phase-2a-clinical-trial
#17
F Li, M Xu, C Qin, L Xia, Y Xiong, X Xi, X Fan, J Gu, J Pu, Q Wu, S Lu, G Wang
We sought to assess the accuracy and safety of the ESAT6-CFP10 reagent in diagnosing tuberculosis (TB) disease. An open-label, randomized phase 2a trial was conducted in 56 healthy adults and 88 TB patients at one medical centre and one teaching hospital in China. All participants received 0.1, 0.5, 1 or 2 μg ESAT6-CFP10 in their right forearm. Moreover, 56 healthy volunteers and 56 patients were given tuberculin-purified protein derivative (TB-PPD) in their left forearm. The remaining 32 patients were administered placebo...
July 21, 2016: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/27448446/roles-of-mas-related-g-protein-coupled-receptor-x2-on-mast-cell-mediated-host-defense-pseudoallergic-drug-reactions-and-chronic-inflammatory-diseases
#18
REVIEW
Hariharan Subramanian, Kshitij Gupta, Hydar Ali
Mast cells (MCs), which are granulated tissue-resident cells of hematopoietic lineage, contribute to vascular homeostasis, innate/adaptive immunity, and wound healing. However, MCs are best known for their roles in allergic and inflammatory diseases, such as anaphylaxis, food allergy, rhinitis, itch, urticaria, atopic dermatitis, and asthma. In addition to the high-affinity IgE receptor (FcεRI), MCs express numerous G protein-coupled receptors (GPCRs), which are the largest group of membrane receptor proteins and the most common targets of drug therapy...
September 2016: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27446253/role-of-erk1-2-activation-on-itch-sensation-induced-by-bradykinin-b1-activation-in-inflamed-skin
#19
Yuanzhen Chen, Shuyan Jiang, Yuying Liu, Jialing Xiong, Jiexian Liang, Wenjin Ji
It has previously been demonstrated that bradykinin receptor B1 (B1R) agonists evoke an itch-related scratching response in inflamed skin via the B1 receptor; however, the mechanisms responsible for this abnormal itch sensation remain unclear. Therefore, the present study utilized a complete Freund's adjuvant (CFA)-induced mouse model of inflammation to elucidate the mechanisms responsible. Over a period of 30 min, scratching behavior was quantified by the number of hind limb scratches of the area surrounding the drug injection site on the neck...
August 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27431238/bat117213-ileal-bile-acid-transporter-ibat-inhibition-as-a-treatment-for-pruritus-in-primary-biliary-cirrhosis-study-protocol-for-a-randomised-controlled-trial
#20
Vinod S Hegade, Stuart F W Kendrick, Robert L Dobbins, Sam R Miller, Duncan Richards, James Storey, George Dukes, Kim Gilchrist, Susan Vallow, Graeme J Alexander, Margaret Corrigan, Gideon M Hirschfield, David E J Jones
BACKGROUND: Pruritus (itch) is a symptom commonly experienced by patients with cholestatic liver diseases such as primary biliary cholangitis (PBC, previously referred to as primary biliary cirrhosis). Bile acids (BAs) have been proposed as potential pruritogens in PBC. The ileal bile acid transporter (IBAT) protein expressed in the distal ileum plays a key role in the enterohepatic circulation of BAs. Pharmacological inhibition of IBAT with GSK2330672 may reduce BA levels in the systemic circulation and improve pruritus...
July 19, 2016: BMC Gastroenterology
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