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Food specific immunoglobulin g

Roberto Papini, Pierluigi di Ciccio, Marianna Marangi, Sergio Ghidini, Emanuela Zanardi, Alberto Vergara, Annunziata Giangaspero, Simona Nardoni, Guido Rocchigiani, Francesca Mancianti, Adriana Ianieri
To evaluate the occurrence of Toxoplasma gondii and to genetically characterize its isolates in carcasses of industrial fattening pigs, blood, diaphragm, and heart samples were collected from 375 carcasses of pigs slaughtered to be processed for Parma ham production. Pigs had been bred on approved farms (n = 75) located in the so-called Food Valley in Italy. Sera were examined for immunoglobulin G antibodies to T. gondii by modified agglutination test (MAT). Both heart and diaphragm samples from seropositive carcasses were processed for the presence of T...
February 16, 2017: Journal of Food Protection
Masahiro Satake, Keiji Matsubayashi, Yuji Hoshi, Rikizo Taira, Yasumi Furui, Norihiro Kokudo, Nobuhisa Akamatsu, Tomoharu Yoshizumi, Nobuhiro Ohkohchi, Hiroaki Okamoto, Masato Miyoshi, Akinori Tamura, Kyoko Fuse, Kenji Tadokoro
BACKGROUND: The high prevalence of specific immunoglobulin G for hepatitis E virus (HEV) in Japanese people raises the possibility of a high incidence of HEV-viremic blood donors and therefore frequent transfusion-transmitted HEV (TT-HEV). STUDY DESIGN AND METHODS: TT-HEV cases established in Japan through hemovigilance and those published in the literature were collected. Infectivity of HEV-contaminated blood components and disease severity in relation to immunosuppression were investigated...
January 31, 2017: Transfusion
Mitat Aricigil, Nuray Bayar Muluk, Engin Umut Sakarya, Emine Güven Sakalar, Mehmet Senturk, William R Reisacher, Cemal Cingi
OBJECTIVES: Allergen immunotherapy is the only cure for immunoglobulin E mediated type I respiratory allergies. Subcutaneous immunotherapy (SCIT) and sublingual immunotherapy (SLIT) are the most common treatments. In this article, we reviewed new routes of allergen immunotherapy. METHODS: Data on alternative routes to allow intralymphatic immunotherapy (ILIT), epicutaneous immunotherapy (EPIT), local nasal immunotherapy (LNIT), oral immunotherapy (OIT), and oral mucosal immunotherapy (OMIT) were gathered from the literature and were discussed...
November 1, 2016: American Journal of Rhinology & Allergy
Laura K Allred, Katherine Lesko, Diane McKiernan, Cynthia Kupper, Stefano Guandalini
Enzymatic digestion, or hydrolysis, has beenproposed for treating gluten-containing foods andbeverages to make them safe for persons with celiacdisease (CD). There are no validated testing methodsthat allow the quantitation of all the hydrolyzed orfermented gluten peptides in foods and beverages thatmight be harmful to CD patients, making itdifficult to assess the safety of hydrolyzed products.This study examines an ELISA-based method todetermine whether serum antibody binding ofresidual peptides in a fermented barley-basedproduct is greater among active-CD patients thana normal control group, using commercial beersas a test case...
December 16, 2016: Journal of AOAC International
Thomas B Martins, Michael E Bandhauer, Diane M Wilcock, Harry R Hill, Patricia R Slev
BACKGROUND: The clinical utility of serum IgG measurement in the diagnosis of allergy and food-induced hypersensitivity has been largely discredited. Recent studies, however, have shown that specific IgG can inhibit IgE mediated allergies, and may play a role in allergen specific desensitization. Accurate reference intervals for IgG specific allergens have not been widely established and are needed for better interpretation of serum antibody concentrations. In this study we established 64 IgG reference intervals for 48 common food allergens, 5 venoms, and 11 molds...
December 2016: Annals of Clinical and Laboratory Science
Laura Kwiatkowski, Jessica Mitchell, Jeffrey Langland
Context • Allergies are a common affliction, whether they are respiratory, food related, or dermatological. People often resort to continuous use of over-the-counter medications, such as antihistamines, to manage their symptoms. Controversy still remains over testing serum immunoglobulin (Ig) G to diagnose food allergies. Objective • This study intended to examine the benefits of treatment of a pediatric patient with natural supplements and an elimination diet for IgG food allergies. Design • The research team reported a case study...
October 2016: Alternative Therapies in Health and Medicine
Seyed Hossein Hoseinifar, Fazel Zoheiri, Carlo C Lazado
Immunostimulation through the use of sustainable and eco-friendly dietary additives is one of the current prophylactic strategies in fish husbandry. Plant-based immunostimulants are highly considered for this intent, both for their scientific and practical advantages. Persian hogweed (Heracleum persicum) is a flower-bearing herb that possesses interesting pharmacological importance due to its bioactive compounds. It is commonly used as spice, food additive, dietary supplement and traditional remedy. The present study evaluated the potential of H...
December 2016: Fish & Shellfish Immunology
Jacek Gocki, Zbigniew Bartuzi
This paper presents current views on the role of immunoglobulin G (IgG) antibodies in the reactions with food antigens in the digestive tract and their role in the diagnosis of food allergy based on the assays of specific IgG class antibodies, with a special focus on contemporary practice guidelines. In the light of current scientific knowledge, the IgG-specific antibody-mediated reactions are a body's natural and normal defensive reactions to infiltrating food antigens, which are considered as pathogens. On the other hand, specific IgG antibodies against food allergens play a crucial role in the induction and maintaining of immunological tolerance to food antigens...
August 2016: Postȩpy Dermatologii i Alergologii
Venkatachalam Sukumaran, Se Chang Park, Sib Sankar Giri
This study evaluated the effects of ginger (Zingiber officinale) as a feeding supplement on the growth, skin mucus immune parameters, and cytokine-related gene expression of Labeo rohita, and its susceptibility to Aeromonas hydrophila infection. Diets containing six different concentrations of dried ginger (0% [basal diet], 0.2% [G2], 0.4% [G4], 0.6% [G6], 0.8% [G8], and 1.0% [G10] were fed to fish (average weight: 12.3 g) for 60 days. Growth parameters were examined at 30 and 60 days post-feeding. Skin mucosal immune responses and gene expression were examined 60 days post-feeding...
October 2016: Fish & Shellfish Immunology
Xinjie Song, Shruti Shukla, Gibaek Lee, Sunhyun Park, Myunghee Kim
Cronobacter species (Cronobacter spp.) are hazardous foodborne pathogens associated with baby food, powdered infant formula (PIF). To develop a rapid and sensitive method for simultaneous detection of seven Cronobacter spp. in PIF, an indirect non-competitive enzyme-linked immunosorbent assay (INC-ELISA) was developed based on a novel immunoglobulin G (IgG), anti-Cronobacter IgG. The developed INC-ELISA was able to detect seven Cronobacter spp. at concentrations ranging from (5.6 ± 0.30) × 10(3) to (2.1 ± 0...
2016: Frontiers in Microbiology
Hanqing He, Pingping Yao, Yang Zhou, Xuan Deng, Jinren Pan
BACKGROUND: The resurgence of pertussis has occurred in many countries. However, the epidemiological profiles of pertussis cannot be well understood by the current surveillance system in China. This study was designed to investigate the age specific serologic evidence of antibodies against pertussis, and to offer information regarding the existence of pertussis infection in Zhejiang Province, China. METHODS: A cross-sectional serosurvey was carried out in 6 counties of Zhejiang Province during September and October of 2014...
2016: PloS One
Huan Yue, Yali Zhou, Pingshi Wang, Xiaomei Wang, Zhenxing Wang, Lin Wang, Zhifeng Fu
A facile label-free electrochemiluminescent (ECL) biosensor was developed for detection of Staphylococcus aureus (S. aureus) based on the specific binding between Fc region of immunoglobulin G (IgG) and S. aureus protein A (SPA) in the cell wall. Carboxyl graphene, with large surface and excellent electron transfer ability, was used as the carrier of IgG for fabrication of ECL biosensor. This biosensor was constructed by depositing carboxyl graphene/porcin IgG composite on the surface of a glassy carbon electrode...
June 1, 2016: Talanta
Jianjie Li, Hao Yan, He Chen, Qiongmei Ji, Shengguang Huang, Pingchang Yang, Zhigang Liu, Bo Yang
BACKGROUND: Rheumatoid arthritis (RA) is a very complicated autoimmune disease with apparent synovial hyperplasia and cartilage and bone destruction. AIMS: In the present study, we aimed to determine whether the pathogenesis of RA correlates with food allergy and which allergen(s) are relevant. MATERIALS AND METHODS: We used type-II collagen (CII) to induce arthritis (collagen-induced arthritis, CIA) model in Wistar rats, and the development of arthritis was evaluated accordingly by scoring system...
January 2016: North American Journal of Medical Sciences
Maryam Saifi, Nithya Swamy, Maria Crain, L Steven Brown, John Andrew Bird
BACKGROUND: Egg allergy is one of the most common immunoglobulin E (IgE)-mediated food allergies. Extensively heating egg has been found to decrease its allergenicity and 64% to 84% of children allergic to egg have been found to tolerate baked-egg products. Because there is no reliable method for predicting baked-egg tolerance, oral food challenges remain the gold standard. Prior studies have reported on baked-egg challenges using up to 2.2 g of egg white (EW) protein. OBJECTIVE: To establish whether children with egg allergy would pass a baked-egg challenge to a larger amount of egg protein and the potential criteria for predicting the likelihood of baked-egg tolerance...
May 2016: Annals of Allergy, Asthma & Immunology
Lisa M Bartnikas, William J Sheehan, Katherine L Tuttle, Carter R Petty, Lynda C Schneider, Wanda Phipatanakul
BACKGROUND: Ovomucoid is the dominant allergen in hen's egg. Although several studies evaluated the utility of ovomucoid specific immunoglobulin E (sIgE) levels in predicting baked (e.g., muffin or cupcake) or raw egg food challenge outcomes, studies that evaluated ovomucoid sIgE as a predictor of cooked egg (e.g., scrambled or hard boiled) challenge outcomes are limited. OBJECTIVE: To determine the relation of ovomucoid sIgE levels with cooked egg food challenge outcomes...
January 2015: Allergy & Rhinology
A Licari, M De Amici, S Nigrisoli, A Ricci, R Castagnoli, S Quaglini, G L Marseglia
Allergen-specific immunoglobulin E (IgE) reactions lead to acute degranulation of mast cells and basophils and release of stored mediators, particularly tryptase and histamine, which can be measured in vitro after reactions. The aim of this study was to investigate the utility of serum tryptase and plasma histamine during oral food challenge (OFC) in 103 children with suspected food allergy, in order to support the diagnosis of a IgE-mediated reaction. Blood samples for serum tryptase and plasma histamine were collected before the OFC and after the onset of allergic symptoms or after 60 minutes from test completion...
April 2015: Journal of Biological Regulators and Homeostatic Agents
Lamia Dahdah, Stefano Ceccarelli, Silvia Amendola, Pietro Campagnano, Caterina Cancrini, Oscar Mazzina, Alessandro Fiocchi
The effects of an immunoadsorption procedure, specifically designed to remove immunoglobulin E (IgE), on food-induced anaphylaxis have never been evaluated. We evaluate the effects of IgE removal on the allergic thresholds to foods. A 6-year-old boy with anaphylaxis to multiple foods and steroid-resistant unstable allergic asthma displayed serum IgE levels of 2800 to 3500 kU/L. To lower IgE serum concentrations, which could be overridden by a high dose of omalizumab, 1.5 plasma volumes were exchanged in 8 apheresis sessions...
December 2015: Pediatrics
P Xepapadaki, A Fiocchi, L Grabenhenrich, G Roberts, K E C Grimshaw, A Fiandor, J I Larco, S Sigurdardottir, M Clausen, N G Papadopoulos, L Dahdah, A Mackie, A B Sprikkelman, A A Schoemaker, R Dubakiene, I Butiene, M L Kowalski, K Zeman, S Gavrili, T Keil, K Beyer
BACKGROUND: Parents and health staff perceive hen's egg allergy (HEA) as a common food allergy in early childhood, but the true incidence is unclear because population-based studies with gold-standard diagnostic criteria are lacking. OBJECTIVE: To establish the incidence and course of challenge-confirmed HEA in children, from birth until the age of 24 months, in different European regions. METHODS: In the EuroPrevall birth cohort study, children with a suspected HEA and their age-matched controls were evaluated in 9 countries, using a standardized protocol including measurement of HE-specific immunoglobulin E-antibodies in serum, skin prick tests, and double-blind, placebo-controlled food challenges (DBPCFC)...
March 2016: Allergy
Mohammad Sadegh Aramli, Behzad Kamangar, Rajab Mohammad Nazari
The present study evaluated the effects of different levels of dietary β-glucan (MacroGard(®)) on growth performance and innate immune parameters in juvenile Persian sturgeon (Acipenser persicus). Fish (20.1 ± 0.8 g) were allocated into 12 tanks (15 fish per tank) and triplicate groups were fed a control diet or diets containing 0.1%, 0.2% and 0.3% β-glucan. After six weeks of daily feeding (3.0% body weight day(-1)), humoral innate immune parameters (serum immunoglobulin (Ig) levels, lysozyme activity and alternative complement activity (ACH50)) and growth parameters (final weight, weight gain, specific growth rate (SGR), food conversion ratio (FCR)) were examined...
November 2015: Fish & Shellfish Immunology
M J Goikoetxea, F Berroa, P Cabrera-Freitag, M Ferrer, J M Núñez-Córdoba, M L Sanz, G Gastaminza
OBJECTIVE: To compare the skin prick test (SPT) with in vitro techniques (single and multiplex fluorescence enzyme-immunoassay [FEIA]) for detecting sensitization to profilin and lipid transfer protein (LTP). METHODS: We retrospectively studied 181 patients with pollen and/or plant food allergy and 61 controls. SPT was performed with date palm profilin (Pho d 2) and peach LTP (Pru p 3), and specific IgE (sIgE) to Phl p 12 and Pru p 3 was analyzed using single FEIA and microarray...
2015: Journal of Investigational Allergology & Clinical Immunology
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