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https://www.readbyqxmd.com/read/28728455/asparagine-preserves-intestinal-barrier-function-from-lps-induced-injury-and-regulates-crf-crfr-signaling-pathway
#1
Huiling Zhu, Dingan Pi, Weibo Leng, Xiuying Wang, Chien-An Andy Hu, Yongqing Hou, Jianglin Xiong, Chunwei Wang, Qin Qin, Yulan Liu
Stress causes intestinal inflammation and barrier dysfunction. Corticotrophin-releasing factor (CRF)/CRF receptor (CRFR) signaling pathway has been shown to be important for stress-induced intestinal mucosal alteration. L-Asparagine (ASN) is a powerful stimulator of ornithine decarboxylase and cell proliferation in a variety of cell types, including colonic cells. In the present study, we investigated whether dietary ASN supplementation could alleviate the damage of intestinal barrier function caused by LPS through modulation of CRF/CRFR signaling pathway...
January 1, 2017: Innate Immunity
https://www.readbyqxmd.com/read/28726761/a-cell-adhesive-plasma-polymerized-allylamine-coating-reduces-the-in-vivo-inflammatory-response-induced-by-ti6al4v-modified-with-plasma-immersion-ion-implantation-of-copper
#2
Uwe Walschus, Andreas Hoene, Maciej Patrzyk, Silke Lucke, Birgit Finke, Martin Polak, Gerold Lukowski, Rainer Bader, Carmen Zietz, Andreas Podbielski, J Barbara Nebe, Michael Schlosser
Copper (Cu) could be suitable to create anti-infective implants based on Titanium (Ti), for example by incorporating Cu into the implant surface using plasma immersion ion implantation (Cu-PIII). The cytotoxicity of Cu might be circumvented by an additional cell-adhesive plasma polymerized allylamine film (PPAAm). Thus, this study aimed to examine in vivo local inflammatory reactions for Ti6Al4V implants treated with Cu-PIII (Ti-Cu), alone or with an additional PPAAm film (Ti-Cu-PPAAm), compared to untreated implants (Ti)...
July 20, 2017: Journal of Functional Biomaterials
https://www.readbyqxmd.com/read/28725969/mastocytosis-from-a-molecular-point-of-view
#3
REVIEW
Daniel Elieh Ali Komi, Todd Rambasek, Stefan Wöhrl
Mast cells (MCs) are physiologically activated by binding of stem cell factor (SCF) to the extracellular domains of the Kit receptor. This binding increases the proliferation and prolongs the survival of normal mature MCs, as well as intensifies the release of mediators. In mastocytosis, somatic mutations of the coding Kit gene cause autocrine dysregulation and lead to constitutive KIT activation even in the absence of its ligand SCF. Clinical symptoms are caused by MC-mediator release and/or infiltration of MCs into tissues...
July 19, 2017: Clinical Reviews in Allergy & Immunology
https://www.readbyqxmd.com/read/28724499/peripheral-arterial-disease-outcomes-and-association-with-supar-a%C3%A2-bridge-to-myeloid-precursors-or-mast-cells-or-both
#4
EDITORIAL
Clemens Hoebaus, Sarah Mohammed Yussuf, Peter Valent, Gerit-Holger Schernthaner
No abstract text is available yet for this article.
July 8, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28724321/diospyros-kaki-calyx-inhibits-immediate-type-hypersensitivity-via-the-reduction-of-mast-cell-activation
#5
Min-Jong Kim, Hae Ran Park, Tae-Yong Shin, Sang-Hyun Kim
CONTEXT: Diospyros kaki L. (Ebenaceae) fruit is widely distributed in Asia and is known to exert anti-inflammatory and antithrombotic effects. OBJECTIVE: We evaluated the inhibitory effect of aqueous extract of D. kaki calyx (AEDKC) on mast cell-mediated immediate-type hypersensitivity and underlying mechanism of action. MATERIALS AND METHODS: For in vivo, ovalbumin (OVA)-induced active systemic anaphylaxis (ASA) and immunoglobulin (Ig) E-mediated passive cutaneous anaphylaxis (PCA) models were used...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28722336/evidence-for-the-modulation-of-nociception-in-mice-by-central-mast-cells
#6
C L Kissel, K J Kovács, A A Larson
BACKGROUND: Hyperalgesia that develops following nerve ligation corresponds temporally and in magnitude with the number of thalamic mast cells located contralateral to the ligature. We tested the possibility that mast cells modulate nociception centrally, similar to their role in the periphery. METHODS: We examined the central effect of two hyperalgesic compounds that induce mast cell degranulation and of stabilized mast cells using cromolyn. RESULTS: Thermal hyperalgesia (tail flick) induced by nerve growth factor (NGF, a neurotrophic compound) and mechanical hyperalgesia (von Frey) induced by dynorphin A (1-17) (opioid compound) each correlated with the per cent of thalamic mast cells that were degranulated...
July 19, 2017: European Journal of Pain: EJP
https://www.readbyqxmd.com/read/28722144/mechanisms-involved-in-hypersensitivity-reactions-to-polysulfone-hemodialysis-membranes
#7
Aranzazu Rodríguez-Sanz, Rafael Sánchez-Villanueva, Javier Domínguez-Ortega, Ana-María Fiandor, María-Paz Ruiz, Filomena Trocoli, Rafael Díaz-Tejeiro, Carlos Cadenillas, Elena González, Virginia Martínez, Margarita López-Trascasa, Santiago Quirce, Rafael Selgas, Teresa Bellón
Several cases of patients with anaphylactic or systemic hypersensitivity reactions to polysulfone (PS) hemodialysis (HD) membranes and tolerance to cellulose triacetate (CTA) membranes have recently been reported. To investigate the mechanisms involved in PS hypersensitivity, basophil, T cell, and complement activation were analyzed in acute-phase samples from two patients with systemic reactions to PS-based membranes. Basophil and T cell activation, as well as higher serum tryptase levels were detected in acute-phase samples compared with basal levels...
July 19, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28721077/food-protein-induced-enterocolitis-syndrome-a-review-of-the-literature-with-focus-on-clinical-management
#8
REVIEW
Marine Michelet, Dominique Schluckebier, Laetitia-Marie Petit, Jean-Christoph Caubet
Food protein-induced enterocolitis syndrome (FPIES) is a potentially severe presentation of non-IgE-mediated gastrointestinal food allergy (non-IgE-GI-FA) with heterogeneous clinical manifestations. Acute FPIES is typically characterized by profuse vomiting and lethargy, occurring classically 1-4 hours after ingestion of the offending food. When continuously exposed to the incriminated food, a chronic form has been described with persistent vomiting, diarrhea, and/or failure to thrive. Although affecting mainly infants, FPIES has also been described in adults...
2017: Journal of Asthma and Allergy
https://www.readbyqxmd.com/read/28720208/treatment-of-uremic-pruritus-a-systematic-review
#9
Elizabeth Simonsen, Paul Komenda, Blake Lerner, Nicole Askin, Clara Bohm, James Shaw, Navdeep Tangri, Claudio Rigatto
BACKGROUND: Uremic pruritus is a common and burdensome symptom afflicting patients with advanced chronic kidney disease (CKD) and has been declared a priority for CKD research by patients. The optimal treatments for uremic pruritus are not well defined. STUDY DESIGN: Systematic review. SETTING & POPULATION: Adult patients with advanced CKD (stage ≥ 3) or receiving any form of dialysis. SELECTION CRITERIA FOR STUDIES: PubMed, CINAHL, Embase, International Pharmaceutical Abstracts, Scopus, Cochrane Library, and ClinicalTrials...
July 15, 2017: American Journal of Kidney Diseases: the Official Journal of the National Kidney Foundation
https://www.readbyqxmd.com/read/28718965/long-term-effects-galectin-1-and-specific-immunotherapy-for-allergic-responses-in-the-intestine
#10
Li-Tao Yang, Qing Shu, Xiang-Qian Luo, Zhi-Qiang Liu, Shu-Qi Qiu, Jiang-Qi Liu, Hai-Jian Guo, Lin-Jing Li, Mao-Gang Li, Da-Bo Liu, Li-Xin Xia, Zhi-Gang Liu, Ping-Chang Yang
BACKGROUND AND AIMS: Mast cell activation interferes with the effects of allergen-specific immunotherapy (SIT). Galectin-1 (Gal-1) is capable of regulating immune cells' functions. This study tests the hypothesis that administration of Gal-1 promotes and prolongs the efficacy of SIT via suppressing mast cell activation. METHODS: An intestinal allergy mouse model was developed. The co-administration of SIT and Gal-1 on suppression of the allergic responses, prevention of mast cell activation, and generation of antigen-specific regulatory T cells (Treg) in the intestine were observed in sensitized mice...
July 18, 2017: Allergy
https://www.readbyqxmd.com/read/28717875/mast-like-protein-kinase-ireh1-from-arabidopsis-thaliana-co-localizes-with-the-centrosome-when-expressed-in-animal-cells
#11
Elena M Chudinova, Pavel A Karpov, Artem I Fokin, Alla I Yemets, Dmytro I Lytvyn, Elena S Nadezhdina, Yaroslav B Blume
The similarity of IREH1 (Incomplete Root Hair Elongation 1) and animal MAST kinases was confirmed; IREH1cDNA was cloned while expressing in cultured animal cells co-localized with the centrosome. In mammals and fruit flies, microtubule-associated serine/threonine-protein kinases (MAST) are strongly involved in the regulation of the microtubule system. Higher plants also possess protein kinases homologous to MASTs, but their function and interaction with the cytoskeleton remain unclear. Here, we confirmed the sequence and structural similarity of MAST-related putative protein kinase IREH1 (At3g17850) and known animal MAST kinases...
July 17, 2017: Planta
https://www.readbyqxmd.com/read/28717422/exosomes-purified-from-a-single-cell-type-have-diverse-morphology
#12
Davide Zabeo, Aleksander Cvjetkovic, Cecilia Lässer, Martin Schorb, Jan Lötvall, Johanna L Höög
Extracellular vesicles (EVs) are produced by all known organisms and are important for cell communication and physiology. Great morphological diversity has been described regarding EVs found in body fluids such as blood plasma, breast milk, and ejaculate. However, a detailed morphological analysis has never been performed on exosomes when purified from a single cell type. In this study we analysed and quantified, via multiple electron microscopy techniques, the morphology of exosomes purified from the human mast cell line HMC-1...
2017: Journal of Extracellular Vesicles
https://www.readbyqxmd.com/read/28715382/odelay-a-large-scale-method-for-multi-parameter-quantification-of-yeast-growth
#13
Thurston Herricks, Fred D Mast, Song Li, John D Aitchison
Growth phenotypes of microorganisms are a strong indicator of their underlying genetic fitness and can be segregated into 3 growth regimes: lag-phase, log-phase, and stationary-phase. Each growth phase can reveal different aspects of fitness that are related to various environmental and genetic conditions. High-resolution and quantitative measurements of all 3 phases of growth are generally difficult to obtain. Here we present a detailed method to characterize all 3 growth phases on solid media using an assay called One-cell Doubling Evaluation of Living Arrays of Yeast (ODELAY)...
July 3, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28713616/baicalein-wogonin-and-scutellaria-baicalensis-ethanol-extract-alleviate-ovalbumin-induced-allergic-airway-inflammation-and-mast-cell-mediated-anaphylactic-shock-by-regulation-of-th1-th2-imbalance-and-histamine-release
#14
Thi Tho Bui, Chun Hua Piao, Chang Ho Song, Chang-Hyun Lee, Hee Soon Shin, Ok Hee Chai
Asthma is characterized by chronic inflammation, goblet cell hyperplasia, the aberrant production of the Th2 cytokines, and eosinophil infiltration into the lungs. In this study, we examined the effects of baicalein, wogonin, and Scutellaria baicalensis ethanol extract on ovalbumin (OVA)-induced asthma by evaluating Th1/Th2 cytokine levels, histopathologic analysis, and compound 48/80-induced systemic anaphylaxis and mast cell activation, focusing on the histamine release from rat peritoneal mast cells. Baicalein, wogonin, and S...
June 2017: Anatomy & Cell Biology
https://www.readbyqxmd.com/read/28713383/the-toxicological-mechanisms-of-environmental-soot-black-carbon-and-carbon-black-focus-on-oxidative-stress-and-inflammatory-pathways
#15
REVIEW
Rituraj Niranjan, Ashwani Kumar Thakur
The environmental soot and carbon blacks (CBs) cause many diseases in humans, but their underlying mechanisms of toxicity are still poorly understood. Both are formed after the incomplete combustion of hydrocarbons but differ in their constituents and percent carbon contents. For the first time, "Sir Percival Pott" described soot as a carcinogen, which was subsequently confirmed by many others. The existing data suggest three main types of diseases due to soot and CB exposures: cancer, respiratory diseases, and cardiovascular dysfunctions...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28712394/-human-rhinovirus-infection-promotes-mast-cell-apoptosis-and-increases-the-release-of-inflammatory-cytokines
#16
Haiwen Liu, Jingyu Tan, Huiquan Feng, Dianzhu Pan
Objective To investigate the regulation of innate immune response of HMC-1 mast cells to human rhinovirus (HRV) infection. Methods Virus replication in HMC-1 cells was quantified by real-time quantitative PCR (qRT-PCR). Cell viability and apoptosis were assessed by flow cytometry. The levels of tumor necrosis factor α (TNF-α), interferon α (IFN-α), interleukin 6 (IL-6) and IL-8 produced by HMC-1 cells were measured using ELISA. Results After HRV infected HMC-1 cells, the copy numbers of virus RNA and apoptotic cells increased obviously over time, what's more, the release of TNF-α, IFN-α, IL-6 and IL-8 from HMC-1 cells ascended significantly compared with control groups...
July 2017: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/28712126/evidence-of-an-abnormal-epithelial-barrier-in-active-untreated-and-corticosteroid-treated-eosinophilic-esophagitis
#17
Dagmar Simon, Basile Page, Monique Vogel, Christian Bussmann, Carine Blanchard, Alex Straumann, Hans-Uwe Simon
BACKGROUND: Eosinophilic esophagitis (EoE) is a chronic, immune/antigen-mediated disease characterized by symptoms related to esophageal dysfunction and an eosinophil-predominant inflammation. This study has aimed to investigate whether the recently observed sensitization to Candida albicans in EoE patients is owing to pre-existing disease and its underlying abnormal epithelial barrier or, alternatively, is linked to corticosteroid (CS) therapy. METHODS: Medical histories, as well as serum and tissue samples of 60 EoE patients (15 CS-naive, 45 with current or previous CS therapy) and 20 controls, stored in the Swiss Eosinophilic Esophagitis Database (SEED) and Biobank, were analyzed...
July 16, 2017: Allergy
https://www.readbyqxmd.com/read/28711627/vasoactive-intestinal-polypeptide-and-mast-cells-regulate-increased-passage-of-colonic-bacteria-in-patients-with-irritable-bowel-syndrome
#18
Olga Bednarska, Susanna A Walter, Maite Casado-Bedmar, Magnus Ström, Eloísa Salvo-Romero, Maria Vicario, Emeran A Mayer, Åsa V Keita
BACKGROUND & AIMS: Irritable bowel syndrome (IBS) is associated with intestinal dysbiosis and symptoms of IBS develop following gastroenteritis. We aimed to study passage of live bacteria through the colonic epithelium, and determine the role of mast cells and vasoactive intestinal polypeptide (VIP) in barrier regulation in IBS and healthy individuals. METHODS: Colon biopsies from 32 women with IBS and 15 age-matched healthy women (controls) were mounted in Ussing chambers; we measured numbers of fluorescently labeled Escherichia coli HS and Salmonella typhimurium that passed through from the mucosal side to the serosal side of the tissue...
July 12, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28708309/bone-healing-in-an-aged-murine-fracture-model-is-characterized-by-sustained-callus-inflammation-and-decreased-cell-proliferation
#19
John H Hebb, Jason W Ashley, Lee McDaniel, Luke A Lopas, John Tobias, Kurt D Hankenson, Jaimo Ahn
Geriatric fractures take longer to heal and heal with more complications than those of younger patients; however, the mechanistic basis for this difference in healing is not well understood. To improve this understanding, we investigated cell and molecular differences in fracture healing between 5 month-old (young adult) and 25 month-old (geriatric) mice healing utilizing high-throughput analysis of gene expression. Mice underwent bilateral tibial fractures and fracture calluses were harvested at 5, 10, and 20 days post fracture (DPF) for analysis...
July 14, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28705275/telangiectasia-macularis-eruptiva-perstans-report-of-three-cases
#20
Gizem Tumer, Tiffany Jow, Sean McElligott, Robert A Schwartz, W Clark Lambert
Telangiectasia macularis eruptiva perstans (TMEP) is a rare, heterogeneous disease of mast cell proliferation. The variable clinical presentation of TMEP, coupled with its rarity, makes the recognition and diagnosis of this disease difficult and challenging for clinicians. The histopathologic findings with hematoxylin and eosin staining that distinguish TMEP from a normal skin biopsy can be so subtle that confirmation of the diagnosis with additional special stains (c-Kit, Giemsa, toluidine blue) is strongly recommended...
2017: Skinmed
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