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oral tolerance immunology

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https://www.readbyqxmd.com/read/29127996/highlights-in-immune-response-microbiome-and-precision-medicine-in-allergic-disease-and-asthma
#1
EDITORIAL
Milena Sokolowska, Cezmi A Akdis
Several recent key findings in immunology of allergic diseases that have led to a need of reassessment of our current thinking are reviewed in this issue of the journal. Recently developed strong evidence on the role of hygiene hypothesis in protection from allergic disease and its immune mechanisms is reviewed by Ober et al. The authors pointed out immunologic mechanisms of lower prevalence of asthma and allergic sensitization observed among Amish children living on traditional farms with higher endotoxin levels as compared to Hutterite children living on industrialized farms...
October 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29124456/serial-immunological-parameters-in-a-phase-ii-trial-of-exemestane-and-low-dose-oral-cyclophosphamide-in-advanced-hormone-receptor-positive-breast-cancer
#2
Maryann Kwa, Xiaochun Li, Yelena Novik, Ruth Oratz, Komal Jhaveri, Jennifer Wu, Ping Gu, Marleen Meyers, Franco Muggia, James Speyer, Alyssa Iwano, Maryam Bonakdar, Lina Kozhaya, Ece Tavukcuoglu, Bahar Budan, Roy Raad, Judith D Goldberg, Derya Unutmaz, Sylvia Adams
BACKGROUND AND PURPOSE: Resistance to endocrine therapies in hormone receptor (HR)-positive breast cancer is a significant challenge. Prior studies have shown that low-dose oral cyclophosphamide can transiently deplete regulatory T cells (Tregs) and improve anti-tumor immunity. We investigated the combination of exemestane with cyclophosphamide in patients with advanced HR-positive breast cancer and assessed changes in circulating immune cell subsets. METHODS: This was a single-arm phase II trial of exemestane with cyclophosphamide in patients with metastatic HR-positive/HER2-negative breast cancer who had progressed on prior endocrine therapy (ClinicalTrials...
November 9, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29065408/low-dose-allergen-specific-immunotherapy-induces-tolerance-in-a-murine-model-of-shrimp-allergy
#3
Nicki Yat Hin Leung, Christine Yee Yan Wai, Shang An Shu, Christopher C Chang, Ka Hou Chu, Patrick S C Leung
BACKGROUND: The efficacy and safety of allergen-specific immunotherapy (AIT) are highly dose-dependent. METHODS: We investigated the dosage effects of AIT and the underlying mechanisms in a murine model of shrimp hypersensitivity. BALB/c mice were sensitized with recombinant shrimp allergen rMet e 1 and challenged orally with a high dose of rMet e 1 to elicit an allergic response. These sensitized mice were then treated with a low (0.01 mg), medium (0.05 mg), or high dosage (0...
2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29025879/tcf7l2-genetic-variants-contribute-to-phenotypic-heterogeneity-of-type-1-diabetes
#4
Maria J Redondo, Susan Geyer, Andrea K Steck, Jay Sosenko, Mark Anderson, Peter Antinozzi, Aaron Michels, John Wentworth, Ping Xu, Alberto Pugliese
OBJECTIVE: The phenotypic diversity of type 1 diabetes suggests heterogeneous etiopathogenesis. We investigated the relationship of type 2 diabetes-associated transcription factor 7 like 2 (TCF7L2) single nucleotide polymorphisms (SNP) with immunologic and metabolic characteristics at type 1 diabetes diagnosis. RESEARCH DESIGN AND METHODS: We studied TrialNet participants with newly diagnosed autoimmune type 1 diabetes with available TCF7L2 rs4506565 and rs7901695 SNP data (n = 810; median age 13...
October 12, 2017: Diabetes Care
https://www.readbyqxmd.com/read/28956429/is-lingual-tonsil-a-preferential-target-for-processing-sublingually-administered-materials
#5
S Masieri, C Incorvaia, C Cavaliere, G Di Cara, F Frati
The oral cavity is a site of pivotal importance in the immune response to foreign antigens, ensuring tolerance induction to harmless agents but reactivity to potentially noxious antigens. Tolerance or reactivity are driven by a number of secondary lymphoid organs, all belonging to the Waldeyer ring, that include adenoids, tubal, palatine and lingual tonsils. Waldeyer’s ring tissues were acknowledged as implicated not only in the adaptive immune system but also in the innate immune system modulation, involving the toll-like receptors...
July 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28939389/recombinant-allergen-and-peptide-based-approaches-for-allergy-prevention-by-oral-tolerance
#6
REVIEW
Raffaela Campana, Huey-Jy Huang, Raphaela Freidl, Birgit Linhart, Susanne Vrtala, Thomas Wekerle, Alexander Karaulov, Rudolf Valenta
Several studies conducted in animal models for immunologically-mediated hypersensitivity diseases have shown that oral administration of antigens early in life can prevent the development of specific humoral and cellular immune responses and thus hypersensitivity reactions to the respective antigens. Such data were also obtained in models for Immunoglobulin E (IgE)-associated allergy, the most common hypersensitivity disease affecting more than 25% of the population. Based on data obtained in animal models for allergy several clinical intervention studies have been conducted in children to study if oral administration of materials containing allergens or allergen-derived peptides early in life can prevent the subsequent development of allergy...
September 20, 2017: Seminars in Immunology
https://www.readbyqxmd.com/read/28859672/safety-and-in-vivo-immune-assessment-of-escalating-doses-of-oral-laquinimod-in-patients-with-rrms
#7
Tjalf Ziemssen, Hayrettin Tumani, Tony Sehr, Katja Thomas, Friedemann Paul, Nils Richter, Emil Samara, Ofer Spiegelstein, Ella Sorani, Oren Bar-Ilan, Dorit Mimrod, Liat Hayardeny
BACKGROUND: Laquinimod is an oral immunomodulator in clinical development to treat relapsing-remitting multiple sclerosis (RRMS). Laquinimod is in clinical development for the treatment of multiple sclerosis and Huntington Disease (HD). The objective of this study is to assess the safety, tolerability, pharmacokinetics (PK) and cytoimmunologic effects following escalating doses of laquinimod in patients with RRMS. METHODS: One hundred twelve patients were randomly assigned to laquinimod/placebo in a series of separate dose-escalating cohorts starting from a daily oral dose of 0...
August 31, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28844318/tolerability-of-the-sq-tree-slit-tablet-in-adults
#8
Anne O Birk, Jens S Andersen, Hanne H Villesen, Maria A Steffensen, Moises A Calderon
PURPOSE: The tree pollen sublingual immunotherapy (SLIT)-tablet (ALK, Denmark) is being developed for the treatment of tree pollen induced allergic rhinitis with or without conjunctivitis. The objective of this Phase I trial was to investigate the tolerability and acceptable dose range of the SQ tree SLIT-tablet in adults with allergic rhinoconjunctivitis. METHODS: The trial was a randomized, double-blind, placebo-controlled, dose escalation Phase I trial that included 70 adults (aged 19-61 years) with birch pollen-induced rhinoconjunctivitis with or without mild to moderate asthma...
August 22, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/28774470/history-and-mechanisms-of-oral-tolerance
#9
REVIEW
Rafael M Rezende, Howard L Weiner
Since its first description by Wells and Osbourne in 1911, oral tolerance has intrigued researchers due to its potential for therapeutic applications. Oral tolerance can be defined as an inhibition of specific immune responsiveness to subsequent parenteral injections of proteins to which an individual or animal has been previously exposed via the oral route. Tolerance induction to commensal bacteria and dietary proteins represents the major immunological event taking place in the gut in physiological conditions...
April 2017: Seminars in Immunology
https://www.readbyqxmd.com/read/28757143/methods-in-allergy-immunology-food-challenges
#10
EDITORIAL
Barbara K Ballmer-Weber, Kirsten Beyer
Since there is no in vitro test, which can accurately predict the clinical relevance of a sensitization to food, the oral food challenge still remains the most reliable procedure to confirm or exclude food allergy and to assess the development of tolerance in children with potentially transient food allergies such as to cow's milk, hen's egg, wheat or soy. Although in the last few years component-resolved diagnostic has improved the food allergy diagnostics, especially in peanut and tree nut allergy, the majority of patients still need to undergo oral food challenge...
July 27, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28709944/latex-proteins-from-calotropis-procera-toxicity-and-immunological-tolerance-revisited
#11
Camila F Bezerra, Érika F Mota, Ana Claudia M Silva, Adriana R Tomé, Maria Z R Silva, Daniel de Brito, Camila T M N Porfírio, Ariclécio C Oliveira, José V Lima-Filho, Márcio V Ramos
Many thousands of plants are disseminated worldwide in traditional and folk medicines based on the belief that their leaves, roots, seeds, bark or secretions, when adequately handled, can treat, alleviate or ameliorate numerous disease symptoms. Calotropis procera (Apocynaceae) is a popular medicinal plant and the claims of this shrub's phytomedicinal properties have been scientifically validated. In this study, further prospects towards the in vivo toxicity and oral immunological tolerance of phytomodulatory proteins isolated from the latex of C...
August 25, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28685970/invariant-natural-killer-cells-change-after-an-oral-allergy-desensitization-protocol-for-cow-s-milk
#12
A Cianferoni, R Saltzman, F Saretta, S Barni, E Dudek, M Kelleher, J M Spergel
BACKGROUND: Cow milk (CM) allergy (CMA) affects up to 3% of the paediatric population and recent data suggest that only about 50% will outgrow by age 8. Oral immunotherapy (OIT) is a type of immune-modulating treatment that is able to induce desensitization to food allergens, to increase tolerance threshold, to reduce the risk of anaphylaxis, and to improve the patient's quality of life. The examination of the immunological changes observed during the establishment of food allergy (FA) desensitization in FA patients is a window into the pathogenesis of food allergy and food tolerance development...
November 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28649294/randomised-controlled-trial-of-a-baked-egg-intervention-in-young-children-allergic-to-raw-egg-but-not-baked-egg
#13
Merryn Netting, Michael Gold, Patrick Quinn, Adaweyah El-Merhibi, Irmeli Penttila, Maria Makrides
BACKGROUND: Consumption of baked egg by raw egg allergic children is associated with immune changes suggesting development of tolerance. However, causation has not been tested using a double blind randomized controlled trial (RCT). We aimed to compare clinical and immunological outcomes after baked egg (BE) consumption in young BE tolerant egg allergic children. METHODS: In a double blind RCT, BE tolerant egg allergic children consumed 10 g BE (1.3 g protein) 2 to 3 times per week for 6 months (n = 21 intervention group) or similar egg free baked goods (n = 22 control group) while maintaining an otherwise egg free diet...
2017: World Allergy Organization Journal
https://www.readbyqxmd.com/read/28532268/allergen-immunotherapy-in-allergic-rhinitis-current-use-and-future-trends
#14
Ludger Klimek, Oliver Pfaar, Jean Bousquet, Gabriela Senti, Thomas Kündig
Type-1 allergies are among the most chronic common diseases of humans. Allergen immunotherapy (AIT) is the only causative and disease-modifying treatment option besides allergen avoidance. Severe systemic adverse allergic reactions may be induced by every AIT treatment. Different approaches have been used to provide safer AIT preparations to lower or even totally overcome this risk. Areas covered: A structured literature recherche in Medline and Pubmed under inclusion of national and international guidelines and Cochrane meta-analyses has been performed aiming at reviewing clinical use of such approaches in AIT...
September 2017: Expert Review of Clinical Immunology
https://www.readbyqxmd.com/read/28521318/breastfeeding-childhood-asthma-and-allergic-disease
#15
Wendy H Oddy
The worldwide prevalence of childhood asthma has been increasing considerably, and the protection afforded by breastfeeding in its development has been the subject of controversy for more than 80 years. Previous systematic reviews have generally found a protective effect of breastfeeding on allergic outcomes, although many studies have methodological limitations. Although breastfeeding is protective against lower respiratory tract infection during infancy, such protection has not been demonstrated for asthma in all studies...
2017: Annals of Nutrition & Metabolism
https://www.readbyqxmd.com/read/28499411/paraneoplastic-acral-vascular-syndrome-in-a-patient-with-metastatic-melanoma-under-immune-checkpoint-blockade
#16
Thilo Gambichler, Stefanie Strutzmann, Andrea Tannapfel, Laura Susok
BACKGROUND: Paraneoplastic acral vascular syndrome (PAVS) is a rare phenomenon which is observed in patients with adenocarcinomas and other malignancies. Various potential pathogenic mechanisms such as tumour invasion of sympathetic nerves, hyperviscosity, hypercoagulability, vasoactive tumour-secreted substances, and immunological mechanisms have been suggested. CASE PRESENTATION: We report a 60-year-old Caucasian male attended our hospital with a bulky lymph node mass in the right axilla...
May 12, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28479335/allergen-specific-igg-antibody-signaling-through-fc%C3%AE-riib-promotes-food-tolerance
#17
Oliver T Burton, Jaciel M Tamayo, Amanda J Stranks, Kyle J Koleoglou, Hans C Oettgen
BACKGROUND: Patients with food allergy produce high-titer IgE antibodies that bind to mast cells through FcεRI and trigger immediate hypersensitivity reactions on antigen encounter. Food-specific IgG antibodies arise in the setting of naturally resolving food allergy and accompany the acquisition of food allergen unresponsiveness in oral immunotherapy. OBJECTIVE: In this study we sought to delineate the effects of IgG and its inhibitory Fc receptor, FcγRIIb, on both de novo allergen sensitization in naive animals and on established immune responses in the setting of pre-existing food allergy...
May 4, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28439004/endocannabinoid-system-acts-as-a-regulator-of-immune-homeostasis-in-the-gut
#18
Nandini Acharya, Sasi Penukonda, Tatiana Shcheglova, Adam T Hagymasi, Sreyashi Basu, Pramod K Srivastava
Endogenous cannabinoids (endocannabinoids) are small molecules biosynthesized from membrane glycerophospholipid. Anandamide (AEA) is an endogenous intestinal cannabinoid that controls appetite and energy balance by engagement of the enteric nervous system through cannabinoid receptors. Here, we uncover a role for AEA and its receptor, cannabinoid receptor 2 (CB2), in the regulation of immune tolerance in the gut and the pancreas. This work demonstrates a major immunological role for an endocannabinoid. The pungent molecule capsaicin (CP) has a similar effect as AEA; however, CP acts by engagement of the vanilloid receptor TRPV1, causing local production of AEA, which acts through CB2...
May 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28397379/b-fahf-2-plus-oral-immunotherapy-oit-is-safer-and-more-effective-than-oit-alone-in-a-murine-model-of-concurrent-peanut-tree-nut-allergy
#19
K D Srivastava, Y Song, N Yang, C Liu, I E Goldberg, A Nowak-Węgrzyn, H A Sampson, X-M Li
BACKGROUND: Concurrent sensitization to peanut (PN) and tree nuts (TN), the most dangerous food allergies, is common. Current oral immunotherapy (OIT) is not fully satisfactory. OBJECTIVE: To determine whether the herbal formula B-FAHF-2 (BF2) ameliorates PN/TN OIT adverse reactions and enhances persistence of a tolerant state. METHODS: Concurrently sensitized PN-, walnut- (WN) and cashew (CSH)-allergic mice received 1-day PN/WN/CSH rush OIT plus 3 weeks of maintenance dosing, with or without 3 weeks prior and 3 weeks BF2 co-treatment...
August 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28391953/-efficacy-of-the-treatment-and-secondary-antifungal-prophylaxis-in-aids-related-histoplasmosis-experience-at-the-francisco-j-mu%C3%A3-iz-infectious-diseases-hospital-in-buenos-aires
#20
Ricardo Negroni, Fernando Messina, Alicia Arechavala, Gabriela Santiso, Mario Bianchi
BACKGROUND: Classic histoplasmosis is a systemic endemic mycosis due to Histoplasma capsulatum var. capsulatum. A significant reduction in the morbidity and mortality of AIDS-related histoplasmosis has been observed since the introduction of highly active antiretroviral therapy (HAART) and secondary antifungal prophylaxis. AIMS: The aim of this study was to determine the current state of prognosis and treatment response of HIV-positive patients with histoplasmosis in the Francisco J...
April 5, 2017: Revista Iberoamericana de Micología
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