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Patrizia Bonadonna, Massimiliano Bonifacio, Roberta Zanotti
Mastocytosis is a clonal disease characterized by proliferation and accumulation of mast cells (MC) in different tissues, preferentially skin and bone marrow, leading to a wide variety of clinical manifestations, mainly caused by the inappropriate release of MC mediators. As a consequence, patients with mastocytosis may experience symptoms due to massive MC activation and release of mediators. Anaphylaxis is the most frequent manifestation of this phenomenon.Drugs are possible triggers of anaphylaxis in patients with mastocytosis, even though the association between mastocytosis and drug anaphylaxis does not appear to be as strong as anaphylaxis after hymenoptera sting; nevertheless, MC disorders might be ruled out in cases of severe systemic reactions to drugs...
September 28, 2016: Current Pharmaceutical Design
Inmaculada Doña, María Salas, James R Perkins, Esther Barrionuevo, Francesco Gaeta, Jose A Cornejo-García, Paloma Campo, Maria José Torres
Non-steroidal anti-inflammatory drugs (NSAIDs) are one of the leading causes of hypersensitivity reactions to drugs, and they are classified in two groups: those induced by non-specific immunological mechanisms (non-allergic or cross-intolerance (CI) reactions), or by specific immunological mechanisms (allergic or selective reactions (SR)). The pathogenesis of CI is associated with their pharmacological activity (COX-1 inhibition), with symptoms due to an imbalance in the arachidonic acid pathway, independently of their chemical structure...
September 28, 2016: Current Pharmaceutical Design
Chiara Vendramin, Siobhan McGuckin, Ferras Alwan, John-Paul Westwood, Mari Thomas, Marie Scully
BACKGROUND: Patients presenting with acute episodes of thrombotic microangiopathies (TMAs) require urgent access to plasma exchange (PEX). OctaplasLG, a solvent/detergent fresh-frozen plasma product that has undergone viral inactivation and prion reduction step, has been used in our institution since 2013, replacing Octaplas. STUDY DESIGN AND METHODS: We prospectively reviewed 981 PEX procedures where OctaplasLG was the replacement fluid in 90 patients admitted acutely with a TMA presentation within our institution from January 1, 2013, to December 31, 2015...
October 23, 2016: Transfusion
Fenfen Cai, Janet Anderson, Michael Rose, Sarah Green, Lyndsay Peters, Jamma Li, Richard B Fulton, Suran L Fernando
No abstract text is available yet for this article.
February 2016: Pathology
Michelle T Graham, Sandra Andorf, Jonathan M Spergel, Talal A Chatila, Kari C Nadeau
PURPOSE OF REVIEW: Food allergies (FAs) are a growing epidemic in western countries with poorly defined etiology. Defined as an adverse immune response to common food allergens, FAs present heterogeneously as a single- or multi-organ response that ranges in severity from localized hives and angioedema to systemic anaphylaxis. RECENT FINDINGS: Current research focusing on epithelial-derived cytokines contends that temporal regulation by these factors impact initial sensitization and persistence of FA responses upon repeated food allergen exposure...
October 2016: Current Allergy and Asthma Reports
M S Tan, E J Teoh, C P Hor, A A C Yeoh
INTRODUCTION: Children who develop any hypersensitivity reaction to eggs are routinely referred to hospital for Measles-Mumps-Rubella (MMR) vaccination as inpatients to prevent anaphylaxis. We aimed to study the association between hypersensitivity reactions after egg exposure and similar reactions after MMR immunisation; and examine the necessity of hospital admission for vaccination. METHODS: A prospective observational study was conducted in Paediatric Department in Bukit Mertajam Hospital, Penang, between March and December 2014...
August 2016: Medical Journal of Malaysia
Huilin Ou, Wei Yao, Nanping Wu, Frederick X C Wang, Tianhao Weng, Chengcong Han, Xiangyun Lu, Dongshan Yu, Haibo Wu, Linfang Cheng, Honglin Chen, Hangping Yao, Lanjuan Li
Developing a safe and effective H7N9 influenza vaccine was initiated in early spring 2013, following human infections with a novel avian influenza A (H7N9) virus. In this study, a candidate H7N9 vaccine seed strain is produced using reverse genetics, with HA and NA derived from a human H7N9 virus and the remaining genes from the PR8 backbone virus which grows well in eggs. We verified that the virulence and transmissibility of the recombinant H7N9 vaccine seed strain were decreased as compared to wild-type H7N9 virus, to levels comparable with PR8...
October 19, 2016: Oncotarget
Miriam Jauset-Rubio, Jonathan Sabaté Del Río, Teresa Mairal, Markéta Svobodová, Mohammad S El-Shahawi, Abdulaziz S Bashammakh, Abdulrahman O Alyoubi, Ciara K O'Sullivan
Lupin is increasingly being used in a variety of food products due to its nutritional, functional and nutraceutical properties. However, several examples of severe and even fatal food-associated anaphylaxis due to lupin inhalation or ingestion have been reported, resulting in the lupin subunit β-conglutin, being defined as the Lup an 1 allergen by the International Union of Immunological Societies (IUIS) in 2008. Here, we report an innovative method termed aptamer-recombinase polymerase amplification (Apta-RPA) exploiting the affinity and specificity of a DNA aptamer selected against the anaphylactic β-conglutin allergen termed β-conglutin binding aptamer II (β-CBA II), facilitating ultrasensitive detection via isothermal amplification...
October 20, 2016: Analytical and Bioanalytical Chemistry
Ann Esquivel, William W Busse
Anaphylaxis is a serious and potentially life-threatening allergic reaction that may follow the ingestion of foods. Although these reactions usually follow a common clinical pattern and often demonstrate IgE sensitization to the antigen in question, both the clinical presentation and causative allergen may be atypical, surprising, and difficult to identify. Failure to identify the actual cause of the reaction can compromise treatment and complicate long-term care. Here, we present a patient who had symptoms of anaphylaxis after eating salmon, but confirmation of the causative allergen was not readily apparent...
October 17, 2016: Journal of Allergy and Clinical Immunology in Practice
J C Menon, J K Joseph, M P Jose, B L Dhananjaya, O V Oommen
INTRODUCTION: Snakebite is an occupational hazard causing considerable morbidity and mortality worldwide, particularly so in tropical countries like India. OBJECTIVE: The aim of this study is to (i) review the demographic, clinical and laboratory findings in patients (1051) admitted with venomous snakebite (ii) to correlate mortality, morbidity and duration of hospital stay with clinical signs, symptoms and laboratory parameters. METHODS: A retrospective study of 1051 patients treated for snakebite over 10 years (2000 - 2009) in Little Flower Hospital, Angamaly, Kerala...
August 2016: Journal of the Association of Physicians of India
Ahmet Özen, Perran Boran, Fatih Torlak, Elif Karakoç-Aydıner, Safa Barış, Melda Karavuş, Işıl Barlan
BACKGROUND: Allergic diseases with a potential for anaphylaxis pose a critical public health issue in schools. AIMS: This study was carried out to identify the current status of prevention and management of anaphylaxis in school children with the main goal of establishing such an action plan. STUDY DESIGN: Cross-sectional study. METHODS: Schools were randomly selected from 11 different regions of Istanbul. A questionnaire was filled out by 2596 teachers/school principals from 232 public schools...
September 2016: Balkan Medical Journal
R Muñoz-Cano, E Ainsua-Enrich, I Torres-Atencio, M Martin, J Sánchez-Lopez, J Bartra, C Picado, J Mullol, A Valero
RATIONALE: Platelet activating factor (PAF) is a lipid mediator involved in the pathophysiology of several allergic diseases, such as the amplification of mast cell (MC) activation in anaphylaxis. Rupatadine is an antihistamine with demonstrated anti-PAF effect but its capacity to inhibit PAF-induced MC degranulation has not been fully evaluated. OBJECTIVE: To investigate the ability of rupatadine to inhibit PAF-induced MC degranulation compared with desloratadine and levocetirizine, to confirm dual rupatadine anti-H1 and anti-PAF activities...
October 19, 2016: Journal of Investigational Allergology & Clinical Immunology
Kyle Mikals, Douglas Beakes, Taylor A Banks
Hymenoptera venom allergy accounts for approximately 17% of all cases of anaphylaxis. Insect stings are a common occurrence across the world, with significant impact on active duty personnel. Venom immunotherapy (VIT) provides an effective treatment for those with systemic reactions to insect stings and other similar indications. We present a case of severe reaction to hymenoptera venom requiring an epinephrine drip and provide an overview for primary care providers on who should be referred to allergy or an allergist, carry an epinephrine auto-injector, and be a candidate for VIT...
October 2016: Military Medicine
Ronelle E Welton, David J Williams, Danny Liew
BACKGROUND: This study provides the first contemporary epidemiological insight into venomous injuries based on demographics and geography in Australia in the timeframe 2000-2013. METHODS: Analysis of national hospitalisation and mortality data to examine the incidence of injury and death due to envenoming in Australia. Rates were calculated using the intercensal population for all Australian age groups. RESULTS: Over the study period, deaths were due to an anaphylactic event (0...
October 17, 2016: Internal Medicine Journal
Alan Kivitz, Thomas Wallace, Ewa Olech, Michael Borofsky, Jenny Devenport, Jinglan Pei, Margaret Michalska
INTRODUCTION: To assess the long-term safety and efficacy of subcutaneous tocilizumab (TCZ-SC) in US patients with rheumatoid arthritis (RA) who rolled over from the two global phase 3 studies, SUMMACTA (NCT01194414) and BREVACTA (NCT1232569), into this open-label, single-arm, phase 3b study. METHODS: Patients continued to receive TCZ-SC 162 mg weekly or every other week or switched from intravenous TCZ to TCZ-SC 162 mg qw for up to 84 weeks. The primary endpoint was the proportion of patients with serious adverse events (SAEs)...
September 24, 2016: Rheumatol Ther
Xuanyi Meng, Xin Li, Jinyan Gao, Hongbing Chen
Bovine α-lactalbumin (ALA) is a known food allergen present in milk to induce anaphylaxis. A previous study demonstrated that irradiated ALA (iALA) decreased the IgE-binding properties and weakened the degranulation capacity of basophils in vitro. The present study aimed to further assess the potential allergenicity of iALA in vivo in a BALB/c mouse model. The mice (n = 10/group) were intragastrically sensitized and orally challenged with either iALA or ALA using cholera toxin as adjuvant. In contrast to the ALA group, the iALA group did not show anaphylactic shock symptoms...
October 13, 2016: Food and Chemical Toxicology
Alexander Morzycki, Anuj Bhatia, Kieran Murphy
Imaging techniques frequently employ contrast agents to improve image resolution and enhance pathology detection. These gadolinium- and iodine-based media, although generally considered safe, are associated with a number of adverse effects ranging from mild to severe. Reactions are classified as either anaphylactoid ("anaphylaxis-like") or nonanaphylactoid, depending on a number of elements that will be reviewed. Herein, we have summarized predisposing risk factors for adverse events resulting from the use of contrast, their associated pathophysiological mechanisms as well as known prophylaxis for the antitreatment of high-risk patients...
October 13, 2016: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
Caitlin M Gillis, Priscila P Zenatti, David A Mancardi, Héloïse Beutier, Laurence Fiette, Lynn E Macdonald, Andrew J Murphy, Susanna Celli, Philippe Bousso, Friederike Jönsson, Pierre Bruhns
Two activating mouse IgG receptors (FcγRs) have the ability to bind monomeric IgG, the high-affinity mouse FcγRI and FcγRIV. Despite high circulating levels of IgG, reports using FcγRI(-/-) or FcγRIV(-/-) mice or FcγRIV-blocking antibodies implicate these receptors in IgG-induced disease severity or therapeutic Ab efficacy. From these studies, however, one cannot conclude on the effector capabilities of a given receptor, because different activating FcγRs possess redundant properties in vivo, and cooperation between FcγRs may occur, or priming phenomena...
October 10, 2016: Journal of Autoimmunity
Andrew O'Keefe, Ann Clarke, Yvan St Pierre, Jennifer Mill, Yuka Asai, Harley Eisman, Sebastien La Vieille, Reza Alizadehfar, Lawrence Joseph, Judy Morris, Jocelyn Graveli, Moshe Ben-Shoshan
OBJECTIVES: To determine the recurrence rate of anaphylaxis in children medically attended in an emergency department (ED), we performed a prospective cohort study to evaluate prehospital and ED management of children with recurrent anaphylaxis and to assess factors associated with recurrent anaphylaxis. STUDY DESIGN: As part of the Cross-Canada Anaphylaxis Registry, parents of children with anaphylaxis identified prospectively in 3 EDs and through an emergency medical response service were contacted annually after presentation and queried on subsequent reactions...
October 12, 2016: Journal of Pediatrics
Agnes Afrodite S Albuquerque, Edson A Margarido, Antonio Carlos Menardi, Adilson Scorzoni, Andrea Carla Celotto, Alfredo J Rodrigues, Walter Vilella A Vicente, Paulo Roberto B Evora
Objective: To examine if methylene blue (MB) can counteract or prevent protamine (P) cardiovascular effects. Methods: The protocol included five heparinized pig groups: Group Sham -without any drug; Group MB - MB 3 mg/kg infusion; Group P - protamine; Group P/MB - MB after protamine; Group MB/P - MB before protamine. Nitric oxide levels were obtained by the nitric oxide/ozone chemiluminescence method, performed using the Nitric Oxide Analizer 280i (Sievers, Boulder, CO, USA)...
May 2016: Brazilian Journal of Cardiovascular Surgery
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