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Crossed hypersensitivity

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https://www.readbyqxmd.com/read/28213494/plc%C3%AE%C2%B51-regulates-sdf-1%C3%AE-induced-lymphocyte-adhesion-and-migration-to-sites-of-inflammation
#1
Marianne Strazza, Inbar Azoulay-Alfaguter, Michael Peled, Alan V Smrcka, Edward Y Skolnik, Shekhar Srivastava, Adam Mor
Regulation of integrins is critical for lymphocyte adhesion to endothelium and migration throughout the body. Inside-out signaling to integrins is mediated by the small GTPase Ras-proximate-1 (Rap1). Using an RNA-mediated interference screen, we identified phospholipase Cε 1 (PLCε1) as a crucial regulator of stromal cell-derived factor 1 alpha (SDF-1α)-induced Rap1 activation. We have shown that SDF-1α-induced activation of Rap1 is transient in comparison with the sustained level following cross-linking of the antigen receptor...
February 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28211343/immediate-reactions-to-more-than-1-nsaid-must-not-be-considered-cross-hypersensitivity-unless-tolerance-to-asa-is-verified
#2
D Pérez-Alzate, J A Cornejo-García, N Pérez-Sánchez, I Andreu, A García-Moral, J A Agúndez, J Bartra, I Doña, M J Torres, M Blanca, N Blanca-López, G Canto
BACKGROUND AND OBJECTIVES: Individuals who develop drug hypersensitivity reactions (DHRs) to chemically unrelated nonsteroidal anti-inflammatory drugs (NSAIDs) are considered cross-hypersensitive. The hallmark for this classification is that the patient presents a reaction after intake of or challenge with acetylsalicylic acid (ASA). Whether patients react to 2 or more NSAIDs while tolerating ASA remains to be studied (selective reactions, SRs). Objective: To identify patients with SRs to 2 or more NSAIDs including strong COX-1 inhibitors...
2017: Journal of Investigational Allergology & Clinical Immunology
https://www.readbyqxmd.com/read/28177949/progress-with-structure-activity-relationship-modelling-of-occupational-chemical-respiratory-sensitizers
#3
Martin J Seed, Raymond M Agius
PURPOSE OF REVIEW: This appraises currently available computer-based ('in silico') models relating the molecular structure of low molecular weight compounds to their respiratory sensitization hazard. The present review places focus on the two main applications of such structure--activity relationship (SAR) models: hypotheses on disease mechanisms and toxicological prediction. RECENT FINDINGS: Analyses of the chemical structures of low molecular weight organic compounds known to have caused occupational asthma has led to the development of mechanistic alerts usually based on electrophilic reaction chemistry and protein cross-linking potential...
February 7, 2017: Current Opinion in Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28164269/anaesthetic-hypersensitivity-reactions-in-france-between-2011-and-2012-the-10th-gerap-epidemiologic-survey
#4
C Tacquard, O Collange, P Gomis, J-M Malinovsky, N Petitpain, P Demoly, S Nicoll, P M Mertes
BACKGROUND: Immediate hypersensitivity reactions during anaesthesia are rare but potentially life-threatening. The epidemiology changes with time and evolving professional practice, and hence needs to be monitored. Our objective was to follow this epidemiology. METHODS: This was a retrospective, observational study in French hospital clinics, conducted by GERAP members (Groupe d'Étude des Réactions Anaphylactoïdes Périopératoires). Consecutive patients seen in allergo-anaesthesia outpatient clinics, who had experienced a hypersensitivity reaction during anaesthesia between 1 January 2011 and 31 December 2012, were included...
March 2017: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/28156507/the-effect-of-connexin-36-deletion-on-chemotherapy-induced-peripheral-neuropathy-cipn
#5
Regina Hanstein, David C Spray
: 1 Background: CIPN is a debilitating side effect and dose limiting toxicity of many chemotherapeutic agents. CIPN induces pathological changes in dorsal root ganglia (DRG), leading to increased cross-talk among the glia that surround sensory neurons (Satellite Glial Cells, SGC's) and between sensory neurons and their adjacent SGCs via gap junctions. Since Connexin 36 (Cx36) is the main neuronal gap junction protein, we investigated CIPN in mice with deletion of Cx36. METHODS: To induce CIPN, mice were given two i...
October 9, 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28141855/the-signal-peptide-like-segment-of-hpaxm-is-required-for-its-association-to-the-cell-wall-in-transgenic-tobacco-plants
#6
Le Li, Weiguo Miao, Wenbo Liu, Shujian Zhang
Harpins, encoded by hrp (hypersensitive response and pathogenicity) genes of Gram-negative plant pathogens, are elicitors of hypersensitive response (HR). HpaXm is a novel harpin-like protein described from cotton leaf blight bacteria, Xanthomonas citri subsp. malvacearum-a synonym of X. campestris pv. malvacearum (Smith 1901-1978). A putative signal peptide (1-MNSLNTQIGANSSFL-15) of hpaXm was predicted in the nitroxyl-terminal (N-terminal)by SignalP (SignalP 3.0 server). Here, we explored the function of the N-terminal leader peptide like segment of hpaXm using transgenic tobacco (Nicotiana tabacum cv...
2017: PloS One
https://www.readbyqxmd.com/read/28134842/microarray-technology-applied-to-human-allergic-disease
#7
REVIEW
Robert G Hamilton
IgE antibodies serve as the gatekeeper for the release of mediators from sensitized (IgE positive) mast cells and basophils following a relevant allergen exposure which can lead to an immediate-type hypersensitivity (allergic) reaction. Purified recombinant and native allergens were combined in the 1990s with state of the art chip technology to establish the first microarray-based IgE antibody assay. Triplicate spots to over 100 allergenic molecules are immobilized on an amine-activated glass slide to form a single panel multi-allergosorbent assay...
January 28, 2017: Microarrays
https://www.readbyqxmd.com/read/28132509/comparison-of-allergenicity-at-gly-m-4-and-gly-m-bd-30k-of-soybean-after-genetic-modification
#8
Jaw-Ji Tsai, Ching-Yun Chang, En-Chih Liao
Despite rapid growth of genetically modified (GM) crops, effective evaluations of genetic modification on allergenicity are still lacking. Gly m Bd 30K is cross-reactive with cow's milk protein casein, Gly m 4, and with birch pollen allergen Bet v 1. Here we compared the allergenicity between GM and non-GM soybeans with respect to the foci Gly m 4 and Gly m Bd 30K. Recombinant allergens of Gly m Bd 30K and Gly m 4 were generated and polyclonal antibodies raised to identify these two allergenic components in soybeans...
February 7, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28130998/investigations-and-implications-of-associations-between-mycobacterial-purified-protein-derivative-hypersensitivity-and-map-antibody-elisa-in-irish-dairy-cows
#9
A E Kennedy, N Byrne, J O'Mahony, R G Sayers
Intradermal testing, involving administration of purified protein derivative (PPD), to elicit a delayed hypersensitivity (DTH) response, is used as a diagnostic tool for bovine tuberculosis (bTB) and to aid in the identification of exposure to Mycobacterium avium subspecies paratuberculosis (MAP), the causative agent of Johne's disease (JD). Further research is required to increase the diagnostic value of skin testing for MAP. The aim of this study was to investigate if animals showing DTH reactions to PPD had an associated increase in MAP ELISA response, thereby identifying potential cases of sub-clinical JD...
January 21, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28110699/high-concentration-topical-capsaicin-may-abolish-the-clinical-manifestations-of-allergic-contact-dermatitis-by-effects-on-induction-and-elicitation
#10
Hjalte H Andersen, Jesper Elberling, Lars Arendt-Nielsen
Allergic contact dermatitis (ACD) is a common skin condition caused by a type-IV hypersensitivity reaction. Even though ACD is considered as a T-cell mediated disease, indications exists that peptidergic nerve fibers at the site of allergen exposure and associated with the draining lymph node play a prominent role in both induction and elicitation of ACD. This neuro-immune cross talk seems rely on neuropeptides such as Substance P secreted by nerve fiber terminals. It is hypothesized that local complete or partial cutaneous denervation/defunctionalization of peptidergic fibers in humans could be a feasible approach towards treating allergic contact dermatitis...
February 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28096358/repair-shielding-of-platinum-dna-lesions-in-testicular-germ-cell-tumors-by-high-mobility-group-box-protein-4-imparts-cisplatin-hypersensitivity
#11
Samuel G Awuah, Imogen A Riddell, Stephen J Lippard
Cisplatin is the most commonly used anticancer drug for the treatment of testicular germ cell tumors (TGCTs). The hypersensitivity of TGCTs to cisplatin is a subject of widespread interest. Here, we show that high-mobility group box protein 4 (HMGB4), a protein preferentially expressed in testes, uniquely blocks excision repair of cisplatin-DNA adducts, 1,2-intrastrand cross-links, to potentiate the sensitivity of TGCTs to cisplatin therapy. We used CRISPR/Cas9-mediated gene editing to knockout the HMGB4 gene in a testicular human embryonic carcinoma and examined cellular responses...
January 31, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28081290/membrane-microdomains-and-the-cytoskeleton-constrain-athir1-dynamics-and-facilitate-the-formation-of-an-athir1-associated-immune-complex
#12
Xueqin Lv, Yanping Jing, Jianwei Xiao, Yongdeng Zhang, Yingfang Zhu, Russell Julian, Jinxing Lin
Arabidopsis hypersensitive induced reaction (AtHIR) proteins function in plant innate immunity. However, the underlying mechanisms by which AtHIRs participate in plant immunity remain elusive. Here, using VA-TIRFM and FLIM-FRET, we revealed that AtHIR1 is present in membrane microdomains and co-localizes with the membrane microdomain marker REM1.3. Single-particle tracking analysis revealed that membrane microdomains and the cytoskeleton, especially microtubules, restrict the lateral mobility of AtHIR1 at the plasma membrane and facilitate its oligomerization...
January 12, 2017: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/28074390/anti-allergic-triterpenes-isolated-from-olive-milled-waste
#13
Asuka Kishikawa, Yhiya Amen, Kuniyoshi Shimizu
The degranulation of basophils stimulated by antigen is one of the allergic mechanisms of immediate hypersensitivity reactions. In a previous study, the β-hexosaminidase release of rat basophilic leukemia (RBL-2H3) cells stimulated by IgE cross-linking was specifically inhibited by ethanol extract of olive milled waste (OMW). OMW is a potential source of triterpenes, which show several biological activities. However, little is known about the effect of triterpenes in OMW on β-hexosaminidase release. Here we investigated anti-allergic triterpenes from the ethanol extract of OMW, and we discuss the structure-activity relationship...
January 10, 2017: Cytotechnology
https://www.readbyqxmd.com/read/28059686/the-role-of-spinal-thrombin-through-protease-activated-receptor-1-in-hyperalgesia-after-neural-injury
#14
Jenell R Smith, Beth A Winkelstein
OBJECTIVE Painful neuropathic injuries induce blood-spinal cord barrier (BSCB) breakdown, allowing pro-inflammatory serum molecules to cross the BSCB, which contributes to nociception. The goal of these studies was to determine whether the blood-borne serine protease thrombin also crosses a permeable BSCB, contributing to nociception through its activation of protease-activated receptor-1 (PAR1). METHODS A 15-minute C-7 nerve root compression, which induces BSCB breakdown and painful behaviors by Day 1, was administered in the rat (n = 10); sham operation (n = 11) and a 3-minute compression (n = 10) that does not induce sensitivity were administered as controls...
January 6, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28049195/immediate-type-hypersensitivity-to-heparins-two-case-reports-and-a-review-of-the-literature
#15
Philipp Cesana, Kathrin Scherer, Andreas J Bircher
Immediate type hypersensitivity reactions due to heparins are rare, and the exact immunologic pathomechanism has not been identified so far. In our 2 case reports, we describe first a 50-year-old female who received dalteparin (Fragmin®) and developed signs of an immediate type hypersensitivity reaction. The personal history revealed a previous application of dalteparin (Fragmin®). Evaluation with a skin prick test showed positive results for dalteparin. The second case deals with a 73-year-old female with a suspected immediate type reaction after the administration of dalteparin (Fragmin®)...
2016: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/28032637/nitrogen-limitation-adaptation-nla-is-involved-in-source-to-sink-remobilization-of-nitrate-by-mediating-the-degradation-of-nrt1-7-in-arabidopsis
#16
Wenwen Liu, Qing Sun, Kai Wang, Qingguo Du, Wen-Xue Li
Recent studies on nitrate transporters (NRTs) have greatly increased our knowledge of the mechanisms regulating nitrogen (N) homeostasis in plants. However, an understanding of how these NRTs are regulated is still lacking. The nitrogen limitation adaptation (nla) mutant is hypersensitive to N limitation. In the nla mutant, (15) N-nitrate spotted on old leaves preferentially accumulated in the youngest leaves. Analysis of leaf cross-sections indicated that NLA expression was expressed in the sieve element and companion cell system...
December 29, 2016: New Phytologist
https://www.readbyqxmd.com/read/28004308/cutaneous-side-effects-and-transepidermal-water-loss-to-gefitinib-a-study-of-11-patients
#17
Franky Chandra, Dendi Sandiono, Unwati Sugiri, Oki Suwarsa, Hendra Gunawan
INTRODUCTION: Cutaneous side effects caused by epidermal growth factor receptor (EGFR) inhibitors occurred in 45-100% of patients which may lead to therapy modification or interruption. This study aimed to evaluate cutaneous side effects and transepidermal water loss (TEWL) values in non-small cell lung carcinoma (NSCLC) patients who received gefitinib EGFR inhibitor. METHODS: A descriptive observational study with cross-sectional design and a consecutive sampling method was conducted from 1 February to 4 March 2016...
December 21, 2016: Dermatology and Therapy
https://www.readbyqxmd.com/read/28002236/patch-test-reactions-to-corticosteroids-retrospective-analysis-from-the-north-american-contact-dermatitis-group-2007-2014
#18
Melanie D Pratt, Asfandyar Mufti, Jennifer Lipson, Erin M Warshaw, Howard I Maibach, James S Taylor, Denis Sasseville, Joel G DeKoven, Matthew J Zirwas, Anthony F Fransway, C G Toby Mathias, Kathryn A Zug, Vincent A DeLeo, Joseph F Fowler, James G Marks, Frances J Storrs, Donald V Belsito
INTRODUCTION: Corticosteroids may cause delayed hypersensitivity. On the basis of structure, the following 4 groups of corticosteroids are recognized: A, B, C, and D (subdivided into D1 and D2). More recently, a newer classification system subdivides corticosteroids into groups 1, 2, and 3. Cross-reactions are unpredictable. The objective of this study was to describe positive patch test and co-reaction patterns to corticosteroids. METHODS AND RESULTS: A retrospective analysis of 17,978 patients patch tested by the North American Contact Dermatitis Group between 2007 and 2014 was performed...
January 2017: Dermatitis
https://www.readbyqxmd.com/read/27997083/acute-sacral-nerve-stimulation-reduces-visceral-mechanosensitivity-in-a-cross-organ-sensitization-model
#19
L D Langlois, E Le Long, M Meleine, M Antor, K Atmani, P Dechelotte, A M Leroi, G Gourcerol
BACKGROUND: Sacral nerve stimulation (SNS) is a surgical treatment of fecal and urinary incontinence that consists of inserting a stimulating electrode into one of the s3 or s4 sacral holes. In addition to the benefit of SNS in the treatment of incontinence, recent studies showed that SNS is effective in the treatment of irritable bowel syndrome as well as bladder pain syndrome. The aim of this study was to evaluate the effect of SNS on visceral mechanosensitivity in a cross-organ sensitization rat model...
November 7, 2016: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/27996942/ige-reactivity-to-polcalcins-varies-according-to-pollen-source
#20
R Asero, G Mistrello, S Amato
BACKGROUND: Polcalcins are highly cross-reactive pollen panallergens. Less than 10% of allergic patients are sensitized to polcalcins. All pollen species are considered able to sensitize patients to this panallergen. OBJECTIVE: We aimed to assess the presence of polcalcins in various pollen extracts used in allergen immunotherapy. METHODS: ELISA inhibition experiments were performed with sera from patients sensitized to polcalcin and rPhl p 7 and rBet v 4...
2016: Journal of Investigational Allergology & Clinical Immunology
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