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Treg IgE

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https://www.readbyqxmd.com/read/28289675/humoral-immunodeficiency-with-hypotonia-feeding-difficulties-enteropathy-and-mild-eczema-caused-by-a-classical-foxp3-mutation
#1
Paul Tuijnenburg, Eloy Cuadrado, Annet M Bosch, Angelika Kindermann, Machiel H Jansen, Marielle Alders, Ester M M van Leeuwen, Taco W Kuijpers
We describe here the case of a boy who presented with pulmonary infections, feeding difficulties due to velopharyngeal insufficiency and gastroesophageal reflux, myopathy, and hypotonia soon after birth. Later, he was also found to have an elevated immunoglobulin (Ig) E and mild eczema and was diagnosed with inflammatory bowel disease. Further immunological screening at the age of 7 years showed low B and NK cell numbers but normal CD4(+) and CD8(+) T cells and notably, normal numbers of CD4(+) regulatory T (Treg) cells...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28273149/effect-of-thermal-processing-on-t-cell-reactivity-of-shellfish-allergens-discordance-with-ige-reactivity
#2
Jodie B Abramovitch, Andreas L Lopata, Robyn E O'Hehir, Jennifer M Rolland
Crustacean allergy is a major cause of food-induced anaphylaxis. We showed previously that heating increases IgE reactivity of crustacean allergens. Here we investigate the effects of thermal processing of crustacean extracts on cellular immune reactivity. Raw and cooked black tiger prawn, banana prawn, mud crab and blue swimmer crab extracts were prepared and IgE reactivity assessed by ELISA. Mass spectrometry revealed a mix of several allergens in the raw mud crab extract but predominant heat-stable tropomyosin in the cooked extract...
2017: PloS One
https://www.readbyqxmd.com/read/28235411/in-vitro-evidence-of-efficacy-and-safety-of-a-polymerized-cat-dander-extract-for-allergen-immunotherapy
#3
María Morales, Mayte Gallego, Victor Iraola, Marta Taulés, Eliandre de Oliveira, Raquel Moya, Jerónimo Carnés
BACKGROUND: Allergy to cat epithelia is highly prevalent, being the major recommendation for allergy sufferers its avoidance. However, this is not always feasible. Allergen specific immunotherapy is therefore recommended for these patients. The use of polymerized allergen extracts, allergoids, would allow to achieve the high allergen doses suggested to be effective while maintaining safety. RESULTS: Cat native extract and its depigmented allergoid were manufactured and biochemically and immunochemically characterized...
February 24, 2017: BMC Immunology
https://www.readbyqxmd.com/read/28228426/probiotics-lactobacillus-gasseri-ks-13-bifidobacterium-bifidum-g9-1-and-bifidobacterium-longum-mm-2-improve-rhinoconjunctivitis-specific-quality-of-life-in-individuals-with-seasonal-allergies-a-double-blind-placebo-controlled-randomized-trial
#4
Jennifer C Dennis-Wall, Tyler Culpepper, Carmelo Nieves, Cassie C Rowe, Alyssa M Burns, Carley T Rusch, Ashton Federico, Maria Ukhanova, Sheldon Waugh, Volker Mai, Mary C Christman, Bobbi Langkamp-Henken
Background: Rhinoconjunctivitis-specific quality of life is often reduced during seasonal allergies. The Mini Rhinoconjunctivitis Quality of Life Questionnaire (MRQLQ) is a validated tool used to measure quality of life in people experiencing allergies (0 = not troubled to 6 = extremely troubled). Probiotics may improve quality of life during allergy season by increasing the percentage of regulatory T cells (Tregs) and inducing tolerance.Objective: The objective of this study was to determine whether consuming Lactobacillus gasseri KS-13, Bifidobacterium bifidum G9-1, and B...
February 22, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28218721/bee-venom-phospholipase-a2-ameliorates-house-dust-mite-extract-induced-atopic-dermatitis-like-skin-lesions-in-mice
#5
Kyung-Hwa Jung, Hyunjung Baek, Manho Kang, Namsik Kim, Seung Young Lee, Hyunsu Bae
Atopic dermatitis (AD) is a biphasic inflammatory skin disease that is provoked by epidermal barrier defects, immune dysregulation, and increased skin infections. Previously, we have demonstrated that bvPLA2 evoked immune tolerance by inducing regulatory T cells (Treg), and thus alleviated Th2 dominant allergic asthma in mice. Here, we would like to determine whether treatment with bvPLA2 exacerbates the AD-like allergic inflammations induced by house dust mite extract (DFE) in a murine model. Epidermal thickness, immune cell infiltration, serum immunoglobulin, and cytokines were measured...
February 18, 2017: Toxins
https://www.readbyqxmd.com/read/28216598/clinical-signs-staphylococcus-and-atopic-eczema-related-seromarkers
#6
Kam Lun Hon, Kathy Yin Ching Tsang, Jeng Sum C Kung, Ting Fan Leung, Christopher W K Lam, Chun Kwok Wong
Childhood eczema or atopic dermatitis (AD) is a distressing disease associated with pruritus, sleep disturbance, impaired quality of life and Staphylococcus aureus isolation. The pathophysiology of AD is complex and various seromarkers of immunity are involved. We investigated if anti-staphylococcal enterotoxin IgE (anti-SE), selected seromarkers of T regulatory (Treg), T helper (Th) and antigen-presenting cells (APC) are associated with clinical signs of disease severity and quality of life. Disease severity was assessed with the Scoring Atopic Dermatitis (SCORAD) index, and quality of life with the Children's Dermatology Life Quality Index (CDLQI) in AD patients ≤18 years old...
February 14, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28117118/intranasal-azelastine-and-mometasone-exhibit-a-synergistic-effect-on-a-murine-model-of-allergic-rhinitis
#7
Do Hyun Kim, Boo-Young Kim, Ji-Hyeon Shin, Sung Won Kim, Soo Whan Kim
PURPOSE: The purpose of this study was to compare the anti-allergic effects of the combination of azelastine and mometasone with those of either agent alone in a Dermatophagoides farinae (Derf)-induced murine model of allergic rhinitis (AR). MATERIALS AND METHODS: Forty BALB/c mice were divided into five groups: azelastine (A), mometasone (M), a combination of azelastine and mometasone (MA), Derf, and control. Derf served as the allergen. Allergic symptom scores, eosinophil counts, and serum Derf-specific IgE levels were measured...
January 18, 2017: American Journal of Otolaryngology
https://www.readbyqxmd.com/read/28063939/superoxide-dismutase-3-attenuates-experimental-th2-driven-allergic-conjunctivitis
#8
Hyun Jung Lee, Bo-Mi Kim, Soojung Shin, Tae-Yoon Kim, So-Hyang Chung
Allergic conjunctivitis is an inflammatory eye disease mediated by Th2 type immune response. The role of extracellular superoxide dismutase 3 (SOD3) in immune response and allergic conjunctival inflammation was examined in a murine model for experimental allergic conjunctivitis (EAC). Allergic conjunctivitis was induced in mice by allergen challenge with ovalbumin in alum via the conjunctival sac. SOD3 was topically applied and allergy indicators were compared. Clinical signs associated with conjunctivitis, such as OVA-specific IgE production, IgG1/G2a ratio and eosinophil infiltration, were drastically reduced in mice treated with SOD3...
January 4, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28049187/enhanced-prophylactic-and-therapeutic-effects-of-polylysine-modified-ara-h-2-dna-vaccine-in-a-mouse-model-of-peanut-allergy
#9
Zhenlai Zhu, Jinlei Yu, Yuan Niu, Shuhong Sun, Yufeng Liu, Andrew Saxon, Ke Zhang, Wei Li
BACKGROUND: The prevalence of food allergy has been increasing, but treatment is very limited. DNA vaccination has been recognized as a promising method for the treatment of allergic diseases; however, poor immunogenicity has hindered its application. METHODS: BALB/c mice were intradermally injected with plasmid DNA encoding the peanut protein Ara h 2 (pAra h 2) or pAra h 2 pretreated with poly-L- lysine (PLL) before or after sensitization with Ara h 2 protein. Ara h 2-specific antibodies were measured by ELISA...
2016: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/27896542/immunomodulatory-effects-of-adjuvants-cpg-mpla-and-bcg-on-the-derp2-induced-acute-asthma-at-early-life-in-an-animal-model-of-balb-c-mice
#10
V Mohammadi-Shahrokhi, A Rezaei, A Andalib, A Rahnama, A Jafarzadeh, N Eskandari
The Th1- and Treg cell-related immune responses play key roles in the modulation of Th2 cell-related allergic disorders. The aim was to evaluate the effects of CPG, MPLA, and BCG on the number of Th1-, Th2-, and Treg cell-related parameters in an animal model of asthma. BALB/c mice were divided into five groups and immunized subcutaneously (SC) on days 1, 15, and 22 with allergen Derp2. Three groups of mice were pretreated SC on days 0, 14, and 21 with CPG, CPG + MPLA, or CPG + BCG. All mice were then challenged intranasally with Derp2 on days 28-37...
November 28, 2016: Inflammation
https://www.readbyqxmd.com/read/27876361/beneficial-effects-of-galectin-9-on-allergen-specific-sublingual-immunotherapy-in-a-dermatophagoides-farinae-induced-mouse-model%C3%A2-of-chronic-asthma
#11
Masaki Ikeda, Shigeki Katoh, Hiroki Shimizu, Akira Hasegawa, Katsuyo Ohashi-Doi, Mikio Oka
BACKGROUND: Allergen-specific sublingual immunotherapy is a potential disease-modifying treatment for allergic asthma. Galectin-9 (Gal-9), a β-galactoside-binding protein with various biologic effects, acts as an immunomodulator in excessive immunologic reactions by expanding regulatory T cells (Treg) and enhancing transforming growth factor (TGF)-β signaling. We investigated the efficacy of sublingually administered Gal-9 as an adjuvant to a specific allergen in a Dermatophagoides farinae (Df)-induced mouse model of chronic asthma...
November 19, 2016: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/27826960/oral-food-desensitization-in-children-with-ige-mediated-cow-s-milk-allergy-immunological-changes-underlying-desensitization
#12
Laura Perezábad, Marta Reche, Teresa Valbuena, Rosina López-Fandiño, Elena Molina, Iván López-Expósito
PURPOSE: This study aimed to evaluate the safety and efficacy to induce clinical desensitization to cow's milk (CM) of an oral immunotherapy (OIT) protocol in a pediatric population with cow's milk allergy (CMA). In addition, the immune responses against β-casein, of peripheral blood mononuclear cells (PBMCs) from CMA patients, before and after the protocol were evaluated and compared to a nonallergic population. METHODS: A group of 20 children with IgE-mediated CMA and 15 nonallergic children were recruited...
January 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/27812173/indoleamine-2-3-dioxygenase-is-not-a-pivotal-regulator-responsible-for-suppressing-allergic-airway-inflammation-through-adipose-derived-stem-cells
#13
Kyu-Sup Cho, Mi-Kyung Park, Sue-Jean Mun, Hee-Young Park, Hak-Sun Yu, Hwan-Jung Roh
BACKGROUND: Although indoleamine 2,3-dioxygenase (IDO)-mediated immune suppression of mesenchymal stem cells (MSCs) has been revealed in septic and tumor microenvironments, the role of IDO in suppressing allergic airway inflammation by MSCs is not well documented. We evaluated the effects of adipose-derived stem cells (ASCs) on allergic inflammation in IDO-knockout (KO) asthmatic mice or asthmatic mice treated with ASCs derived from IDO-KO mice. METHODS AND FINDINGS: ASCs were injected intravenously in wild-type (WT) and IDO-KO asthmatic mice...
2016: PloS One
https://www.readbyqxmd.com/read/27788149/transcriptional-profiling-of-egg-allergy-and-relationship-to-disease-phenotype
#14
Roman Kosoy, Charuta Agashe, Alexander Grishin, Donald Y Leung, Robert A Wood, Scott H Sicherer, Stacie M Jones, A Wesley Burks, Wendy F Davidson, Robert W Lindblad, Peter Dawson, Miriam Merad, Brian A Kidd, Joel T Dudley, Hugh A Sampson, M Cecilia Berin
BACKGROUND: Egg allergy is one of the most common food allergies of childhood. There is a lack of information on the immunologic basis of egg allergy beyond the role of IgE. OBJECTIVE: To use transcriptional profiling as a novel approach to uncover immunologic processes associated with different phenotypes of egg allergy. METHODS: Peripheral blood mononuclear cells (PBMCs) were obtained from egg-allergic children who were defined as reactive (BER) or tolerant (BET) to baked egg, and from food allergic controls (AC) who were egg non-allergic...
2016: PloS One
https://www.readbyqxmd.com/read/27770456/control-of-asthma-by-omalizumab-the-role-of-cd4-foxp3-regulatory-t-cells
#15
LETTER
F Amat, P Tallon, A P Foray, B Michaud, N Lambert, P Saint-Pierre, L Chatenoud, J Just
No abstract text is available yet for this article.
December 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/27643438/foxp3-tregs-require-wasp-to-restrain-th2-mediated-food-allergy
#16
Willem S Lexmond, Jeremy A Goettel, Jonathan J Lyons, Justin Jacobse, Marion M Deken, Monica G Lawrence, Thomas H DiMaggio, Daniel Kotlarz, Elizabeth Garabedian, Paul Sackstein, Celeste C Nelson, Nina Jones, Kelly D Stone, Fabio Candotti, Edmond H H M Rings, Adrian J Thrasher, Joshua D Milner, Scott B Snapper, Edda Fiebiger
In addition to the infectious consequences of immunodeficiency, patients with Wiskott-Aldrich syndrome (WAS) often suffer from poorly understood exaggerated immune responses that result in autoimmunity and elevated levels of serum IgE. Here, we have shown that WAS patients and mice deficient in WAS protein (WASP) frequently develop IgE-mediated reactions to common food allergens. WASP-deficient animals displayed an adjuvant-free IgE-sensitization to chow antigens that was most pronounced for wheat and soy and occurred under specific pathogen-free as well as germ-free housing conditions...
October 3, 2016: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/27633092/adenovirus-mediated-foxp3-expression-in-lung-epithelial-cells-reduces-airway-inflammation-in-ovalbumin-and-cockroach-induced-asthma-model
#17
Soojin Park, Hwan-Suck Chung, Dasom Shin, Kyung-Hwa Jung, Hyunil Lee, Junghee Moon, Hyunsu Bae
Foxp3 is a master regulator of CD4(+)CD25(+) regulatory T-cell (Treg) function and is also a suppressor of SKP2 and HER2/ErbB2. There are an increasing number of reports describing the functions of Foxp3 in cell types other than Tregs. In this context, we evaluated the functions of Foxp3 in ovalbumin- and cockroach-induced asthma models. Foxp3-EGFP-expressing adenovirus or EGFP control adenovirus was administered intratracheally (i.t.), followed by challenge with ovalbumin (OVA) or cockroach extract to induce asthma...
September 16, 2016: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/27561877/baicalein-induces-cd4-foxp3-t-cells-and-enhances-intestinal-barrier-function-in-a-mouse-model-of-food-allergy
#18
Min-Jung Bae, Hee Soon Shin, Hye-Jeong See, Sun Young Jung, Da-Ae Kwon, Dong-Hwa Shon
The incidence of food allergy, which is triggered by allergen permeation of the gastrointestinal tract followed by a T-helper (Th) 2-mediated immune response, has been increasing annually worldwide. We examined the effects of baicalein (5,6,7-trihydroxyflavone), a flavonoid from Scutellaria baicalensis used in oriental herbal medicine, on regulatory T (Treg) cell induction and intestinal barrier function through the regulation of tight junctions in a mouse model of food allergy. An allergic response was induced by oral challenge with ovalbumin, and the incidence of allergic symptoms and T cell-related activity in the mesenteric lymph nodes were analyzed with and without the presence of baicalein...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27558586/allergen-specific-immunotherapy-is-it-vaccination-against-toxins-after-all
#19
REVIEW
M F Bachmann, T M Kündig
IgE-mediated allergies, in particular allergic rhinoconjunctivitis and asthma, have reached epidemic proportions, affecting about one-third of the population in developed countries. The most effective treatment for allergies is specific immunotherapy (SIT), which involves the injection of increasing doses of an allergen extract to allergic individuals. The current form of SIT was first introduced in 1911 and recently celebrated its 100th birthday for the treatment of hay fever. The concept of this therapy at the time was straightforward, as it was believed that pollen contained toxins against which the patient could be vaccinated...
January 2017: Allergy
https://www.readbyqxmd.com/read/27525046/epigenetic-features-of-foxp3-in-children-with-cow-s-milk-allergy
#20
Lorella Paparo, Rita Nocerino, Linda Cosenza, Rosita Aitoro, Valeria D'Argenio, Valentina Del Monaco, Carmen Di Scala, Antonio Amoroso, Margherita Di Costanzo, Francesco Salvatore, Roberto Berni Canani
BACKGROUND: DNA methylation of the Th1 and Th2 cytokine genes is altered during cow's milk allergy (CMA). Forkhead box transcription factor 3 (FoxP3) is essential for the development and function of regulatory T cells (Tregs) and is involved in oral tolerance acquisition. We assessed whether tolerance acquisition in children with IgE-mediated CMA is associated with DNA demethylation of the Treg-specific demethylated region (TSDR) of FoxP3. RESULTS: Forty children (aged 3-18 months) were enrolled: 10 children with active IgE-mediated CMA (group 1), 10 children who outgrew CMA after dietary treatment with an extensively hydrolyzed casein formula containing the probiotic Lactobacillus rhamnosus GG (group 2), 10 children who outgrew CMA after treatment with other formulas (group 3), and 10 healthy controls (group 4)...
2016: Clinical Epigenetics
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