51
|
Elizur A, Appel MY, Nachshon L, Levy MB, Epstein-Rigbi N, Golobov K, Goldberg MR. NUT Co Reactivity - ACquiring Knowledge for Elimination Recommendations (NUT CRACKER) study. Allergy 2018; 73:593-601. [PMID: 29127694 DOI: 10.1111/all.13353] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/07/2017] [Indexed: 02/05/2023]
Abstract
BACKGROUND Ambiguities exist regarding the diagnosis of tree-nut allergy, necessitating either their elimination or the performance of oral food challenges (OFCs). OBJECTIVE To examine the coincidences of allergies among tree-nuts and improve diagnostic testing to minimize the need for OFC. METHODS Eighty-three patients prospectively evaluated for walnut, pecan, cashew, pistachio, hazelnut, and almond allergy. A history of previous reactions was obtained, and standardized skin prick tests (SPTs) using finely ground tree-nut solution and basophil activation tests (BAT) were performed. Patients underwent OFC for each tree-nut they eliminated and to which a reaction in the previous 2 years was not documented. RESULTS While most patients were sensitized to 5-6 tree-nuts, over 50% were allergic to only 1-2 tree-nuts. The highest rate of allergy in sensitized patients was observed for walnut (74.6%) and cashew (65.6%). The rate of co-allergy for most tree-nuts was <30%. Two-thirds of walnut- and cashew-allergic patients were also allergic to pecan and pistachio, respectively, while all pecan- and pistachio-allergic patients were allergic to walnut and cashew, respectively. Receiver-operating characteristic analysis for SPT and BAT was tree-nut dependent and yielded area under the curve (AUC) values ranging from 0.75 to 0.94. Knowledge of coincident allergies in these pairs along with the combination of SPT and BAT correctly distinguished allergic from tolerant patients for walnut (87%), pecan (66%), cashew (71%), and pistachio (79%). CONCLUSION The data presented here should assist in differentiating between allergic and tolerant patients, decrease the need for OFC, and allow for appropriate elimination recommendations.
Collapse
|
52
|
Nachshon L, Goldberg MR, Levy MB, Epstein-Rigbi N, Elizur A. Long Term outcome of Peanut Oral Immunotherapy (OIT) in Patients Unable to Reach Maintenance Goal. J Allergy Clin Immunol 2018. [DOI: 10.1016/j.jaci.2017.12.755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
53
|
Rigbi NE, Goldberg MR, Levy MB, Nachshon L, Golobov K, Elizur A. Changes in patient quality of life during oral immunotherapy for food allergy. Allergy 2017; 72:1883-1890. [PMID: 28542911 DOI: 10.1111/all.13211] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/18/2017] [Indexed: 01/12/2023]
Abstract
BACKGROUND Quality of life (QOL) is impaired in patients with food allergy and improves following oral immunotherapy (OIT). However, the treatment itself is prolonged and demanding. We examined changes in patient QOL during OIT for food allergy. METHODS The FAQLQ-PF was administered to children aged 4-12 years undergoing OIT for milk, peanut, or egg allergy, at the beginning and after 4 months of treatment. Patients were categorized as improved, unchanged, or diminished FAQLQ-PF (>0.5 point decrease, a change of ≤0.5 points, or >0.5 increase, respectively) and compared. Food-allergic patients not undergoing OIT served as controls. RESULTS The Food Anxiety, Social and Dietary Limitation, and total FAQLQ-PF scores improved significantly during the study period (P=.001, P=.018, and P=.01, respectively) in treated but not in control patients, while the Emotional Impact did not. The change in the FAQLQ-PF was independent of the maximal tolerated dose at baseline or following four months of treatment, the pace of dose increase, or the number or severity of reactions experienced. The total FAQLQ-PF score was inversely associated with the score at baseline on multivariate analysis (regression coefficient=-0.56, P<.001). That was driven primarily by improvement in QOL scores in patients with high score (worse QOL) at baseline. Some patients with low FAQLQ-PF score (better QOL) at baseline deteriorated. CONCLUSIONS QOL of patients with food allergy improves in some but deteriorates in others during OIT. Patients with impaired QOL at baseline improve significantly despite the treatment burden. Some patients with better QOL at baseline might deteriorate during OIT.
Collapse
|
54
|
Sinai T, Amizur-Levi R, Elizur A, Goldberg M, Nachshon L, Katz Y, Monsonego-Ornan E. SUN-LB338: Lifelong Food Allergies Can Lead To Poor Nutritional Status. Clin Nutr 2017. [DOI: 10.1016/s0261-5614(17)30625-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
55
|
Goldberg MR, Elizur A, Nachshon L, Appel MY, Levy MB, Golobov K, Goldberg R, Stein M, Rothenberg ME, Katz Y. Oral immunotherapy–induced gastrointestinal symptoms and peripheral blood eosinophil responses. J Allergy Clin Immunol 2017; 139:1388-1390.e4. [DOI: 10.1016/j.jaci.2016.09.053] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 09/06/2016] [Accepted: 09/14/2016] [Indexed: 10/20/2022]
|
56
|
Andorf S, Borres MP, Block W, Tupa D, Bollyky JB, Sampath V, Elizur A, Lidholm J, Jones JE, Galli SJ, Chinthrajah RS, Nadeau KC. Association of Clinical Reactivity with Sensitization to Allergen Components in Multifood-Allergic Children. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2017; 5:1325-1334.e4. [PMID: 28351786 DOI: 10.1016/j.jaip.2017.01.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 01/18/2017] [Accepted: 01/26/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Thirty percent of children with food allergies have multiple simultaneous allergies; however, the features of these multiple allergies are not well characterized serologically or clinically. OBJECTIVE We comprehensively evaluated 60 multifood-allergic patients by measuring serum IgE to key allergen components, evaluating clinical histories and medication use, performing skin tests, and conducting double-blind, placebo-controlled food challenges (DBPCFCs). METHODS Sixty participants with multiple food allergies were characterized by clinical history, DBPCFCs, total IgE, specific IgE, and component-resolved diagnostics (IgE and IgG4) data. The food allergens tested were almond, egg, milk, sesame, peanut, pecan, walnut, hazelnut, cashew, pistachio, soy, and wheat. RESULTS Our data demonstrate that of the reactions observed during a graded DBPCFC, gastrointestinal reactions occurred more often in boys than in girls, as well as in individuals with high levels of IgE to 2S albumins from cashew, walnut, and hazelnut. Certain food allergies often occurred concomitantly in individuals (ie, cashew/pistachio and walnut/pecan/hazelnut). IgE testing to components further corroborated serological relationships between and among these clustered food allergies. CONCLUSIONS Associations of certain food allergies were shown by DBPCFC outcomes as well as by correlations in IgE reactivity to structurally related food allergen components. Each of these criteria independently demonstrated a significant association between allergies to cashew and pistachio, as well as among allergies to walnut, pecan, and hazelnut.
Collapse
|
57
|
Hermann G, Jabarin B, Marom T, Barzilay B, Elizur A, Eviatar E, Pitaro J. Nasal Fibrolipomatous Hamartoma, an Idiosyncratic Connective Tissue Malformation in an Infant. Fetal Pediatr Pathol 2017; 36:76-81. [PMID: 27629571 DOI: 10.1080/15513815.2016.1223238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
We describe a congenital mass in the nasopharynx of an infant presenting with dyspnea and feeding difficulties. Magnetic resonance imaging demonstrated 2 separate polypoid nasal cavity masses that were endoscopically resected. Histologically, both lesions were composed of mature adipose tissue with broad fibrous bands and several foci of brown fat. PLAG-1 and HMGA-2 were negative by immunostains. The best diagnosis was a fibrolipomatous hamartoma.
Collapse
|
58
|
Levy MB, Goldberg MR, Nachshon L, Elizur A. Unexpected Re-emergence of Clinical Allergy Following Negative Oral Food Challenges. J Allergy Clin Immunol 2017. [DOI: 10.1016/j.jaci.2016.12.397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
59
|
Abu-Kishk I, Polakow-Farkash S, Elizur A. Long-term outcome after pediatric intensive care unit asthma admissions. Allergy Asthma Proc 2016; 37:169-175. [PMID: 27931294 DOI: 10.2500/aap.2016.37.4008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Patients with asthma admitted to the pediatric intensive care unit (PICU) are often found to have had previous severe asthma exacerbations. OBJECTIVE To prospectively evaluate the outcome of children after PICU admission. METHODS Patients, ages 218 years, admitted to the PICU at Assaf Harofeh Medical Center over a 10-year period were assessed at a mean of 10 years after their admission and compared with matched patients admitted to the pediatric ward. Each patient filled out a questionnaire on subsequent hospitalizations and current asthma treatment and control. Pulmonary function studies and allergy skin tests were performed. RESULTS Compared with patients admitted to the pediatric ward, those admitted to the PICU had more hospitalization and ICU admissions after their index admission (p = 0.022 and p = 0.021, respectively). Most patients in both groups (6070%) had uncontrolled asthma, and 47% of those (PICU) and 33% (ward) were not receiving controller therapy. Patients in the PICU group had more recent asthma exacerbations (p = 0.014), weekly wheezing (p = 0.017), and bronchodilator use (p = 0.007). Lung function tests were comparable between the two groups, but 3045% in each group had airflow obstruction. No significant differences were found between preschool and school-age children in any of the parameters. CONCLUSION Compared with patients admitted to the pediatric ward, those admitted to the PICU with asthma exacerbations, experienced more asthma-related hospitalizations and their asthma was less controlled even years later. The lack of regular follow-up and controller therapy in most patients after asthma hospitalization indicated that this increased morbidity might be prevented.
Collapse
|
60
|
Matok I, Elizur A, Perlman A, Ganor S, Levine H, Kozer E. Association of Acetaminophen and Ibuprofen Use With Wheezing in Children With Acute Febrile Illness. Ann Pharmacother 2016; 51:239-244. [PMID: 27794128 DOI: 10.1177/1060028016678006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Many infants and children receive acetaminophen and/or ibuprofen during febrile illness. Previously, some studies have linked acetaminophen and ibuprofen use to wheezing and exacerbation of asthma symptoms in infants and children. OBJECTIVE To assess whether acetaminophen or ibuprofen use are associated with wheezing in children presenting to the emergency department (ED) with febrile illness. METHODS This was a cross-sectional study of children who presented with fever to the pediatric ED between 2009 and 2013. The data were collected from questionnaires and from the children's medical files. Patients with wheezing in the ED were compared with nonwheezing patients. Associations between medication use and wheezing were assessed using univariate and multivariate analyses. The multivariate analysis adjusted for potential confounding variables (ie, age, atopic dermatitis, allergies, smoking, antibiotics use, etc) via propensity scores. RESULTS During the study period, 534 children admitted to the ED met our inclusion criteria, of whom 347 (65%) were included in the study. The use of acetaminophen was similar in children diagnosed with wheezing compared with those without wheezing (n = 39, 81.3%, vs n = 229, 82.7%, respectively). Ibuprofen use was significantly lower in children diagnosed with wheezing (n = 22, 52.4%, vs n = 168, 69.4%, respectively). In multivariate analysis, acetaminophen was not associated with a higher rate of wheezing during acute febrile illness (adjusted odds ratio [OR] = 0.76, 95% CI = 0.24- 2.39), whereas ibuprofen was associated with a lower risk of wheezing (adjusted OR = 0.36, 95% CI = 0.13-0.96). CONCLUSIONS Our study suggests that acetaminophen and ibuprofen are not associated with increased risk for wheezing during acute febrile illness.
Collapse
|
61
|
Abitbul R, Amirav I, Blau H, Alkrinawi S, Aviram M, Shoseyov D, Bentur L, Avital A, Springer C, Lavie M, Prais D, Dabbah H, Elias N, Elizur A, Goldberg S, Hevroni A, Kerem E, Luder A, Roth Y, Cohen-Cymberknoh M, Ben Ami M, Mandelberg A, Livnat G, Picard E, Rivlin J, Rotschild M, Soferman R, Loges NT, Olbrich H, Werner C, Wolter A, Herting M, Wallmeier J, Raidt J, Omran H, Mussaffi H. Primary ciliary dyskinesia in Israel: Prevalence, clinical features, current diagnosis and management practices. Respir Med 2016; 119:41-47. [DOI: 10.1016/j.rmed.2016.08.015] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2016] [Revised: 06/05/2016] [Accepted: 08/21/2016] [Indexed: 11/29/2022]
|
62
|
Amirav I, Roduta Roberts M, Mussaffi H, Mandelberg A, Roth Y, Abitbul R, Luder A, Blau H, Alkrinawi S, Aviram M, Ben-Ami M, Rotschild M, Bentur L, Shoseyov D, Cohen-Cymberknoh M, Kerem E, Avital A, Springer C, Hevroni A, Dabbah H, Elizur A, Picard E, Goldberg S, Rivlin J, Livnat G, Lavie M, Alias N, Soferman R, Olbrich H, Raidt J, Wallmeier J, Werner C, Loges NT, Omran H. Collecting clinical data in primary ciliary dyskinesia- challenges and opportunities. F1000Res 2016; 5:2031. [PMID: 27781089 PMCID: PMC5022703 DOI: 10.12688/f1000research.9323.2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/29/2016] [Indexed: 11/20/2022] Open
Abstract
Rationale: Primary ciliary dyskinesia (PCD) is under diagnosed and underestimated. Most clinical research has used some form of questionnaires to capture data but none has been critically evaluated particularly with respect to its end-user feasibility and utility. Objective: To critically appraise a clinical data collection questionnaire for PCD used in a large national PCD consortium in order to apply conclusions in future PCD research. Methods: We describe the development, validation and revision process of a clinical questionnaire for PCD and its evaluation during a national clinical PCD study with respect to data collection and analysis, initial completion rates and user feedback. Results: 14 centers participating in the consortium successfully completed the revised version of the questionnaire for 173 patients with various completion rates for various items. While content and internal consistency analysis demonstrated validity, there were methodological deficiencies impacting completion rates and end-user utility. These deficiencies were addressed resulting in a more valid questionnaire. Conclusions: Our experience may be useful for future clinical research in PCD. Based on the feedback collected on the questionnaire through analysis of completion rates, judgmental analysis of the content, and feedback from experts and end users, we suggest a practicable framework for development of similar tools for various future PCD research.
Collapse
|
63
|
Epstein Rigbi N, Katz Y, Goldberg MR, Levy MB, Nachshon L, Elizur A. Patient quality of life following induction of oral immunotherapy for food allergy. Pediatr Allergy Immunol 2016; 27:263-8. [PMID: 26681071 DOI: 10.1111/pai.12528] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/12/2015] [Indexed: 12/27/2022]
Abstract
BACKGROUND Patient quality of life improves following successful completion of oral immunotherapy (OIT), but the process itself might have undesirable effects. We aimed to evaluate patient quality of life following OIT initial induction. METHODS The Hebrew version of the Food Allergy Quality of Life Questionnaire-Parental Form (FAQLQ-PF) was validated and administered to the parents of children following the first week of OIT for food allergy (n = 119). Patient demographics and clinical history as well as the course of initial induction week were reviewed. RESULTS Pre-OIT severity of food allergy, defined as severity of reactions due to accidental exposure to the allergenic food (anaphylactic reactions, p = 0.017; epinephrine use, p = 0.049; emergency room referrals p = 0.003; and hospital admissions, p = 0.015) and a lower number of tolerated doses during initial induction, reflective of a lower maximal tolerated dose for the different allergens (p = 0.011) were associated with worse total FAQLQ-PF scores. The number of tolerated doses during induction and pre-OIT emergency room referrals remained significantly associated with worse total score of the FAQLQ-PF on multivariate analysis (p = 0.016 and p = 0.005, respectively). The correlation between the number of tolerated doses and quality of life scores was moderate-strong primarily in children aged 6-12 years (Total score, r = -0.41, p = 0.001; Emotional Impact r = -0.42, p = 0.001; Food Anxiety, r = -0.38, p = 0.002; Social and Dietary Limitations, r = -0.33, p = 0.009). CONCLUSIONS Pre-OIT reaction severity affects quality of life in both preschool and school-aged food-allergic children. In contrast, a lower maximal tolerated dose during OIT induction is associated with worse indices of quality of life primarily in children aged 6-12 years.
Collapse
|
64
|
Golobov K, Yichie T, Levy MB, Goldberg MR, Nachshon L, Elizur A, Katz Y. Determination of Sesame Allergen Threshold Doses. J Allergy Clin Immunol 2016. [DOI: 10.1016/j.jaci.2015.12.578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
65
|
Levy MB, Nachshon L, Goldberg MR, Yechiam-Caspi H, Golobov K, Elizur A, Katz Y. The Role of Oral Food Challenge in Peanut-Sensitized Individuals. J Allergy Clin Immunol 2016. [DOI: 10.1016/j.jaci.2015.12.574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
66
|
Melchior M, Nachshon L, Levy MB, Goldberg MR, Golobov K, Elizur A, Katz Y. Determination of Milk Allergen Threshold Doses with Dedicated Challenge. J Allergy Clin Immunol 2016. [DOI: 10.1016/j.jaci.2015.12.546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
67
|
Elizur A, Appel MY, Goldberg MR, Yichie T, Levy MB, Nachshon L, Katz Y. Clinical and laboratory 2-year outcome of oral immunotherapy in patients with cow's milk allergy. Allergy 2016; 71:275-8. [PMID: 26482941 DOI: 10.1111/all.12794] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/14/2015] [Indexed: 11/28/2022]
Abstract
Studies examining the long-term effect of oral immunotherapy in food-allergic patients are limited. We investigated cow's milk-allergic patients, >6 months after the completion of oral immunotherapy (n = 197). Questionnaires, skin prick tests, and basophil activation assays were performed. Of the 195 patients contacted, 180 (92.3%) were consuming milk protein regularly. Half experienced adverse reactions, mostly mild. Thirteen patients (6.7%) required injectable epinephrine. Higher reaction rate after immunotherapy was associated with more anaphylactic episodes before treatment and a lower starting dose (OR = 2.1, P = 0.035 and OR = 2.3, P = 0.035, respectively). Reaction rate in patients who were 6-15 months, 15-30 months, or >30 months post-treatment decreased from 0.28/month to 0.21/month to 0.15/month, respectively (P < 0.01). Milk-induced %CD63 and %CD203c expression was significantly lower in patients >24 months vs in patients <24 months post-treatment (P = 0.038 and P = 0.047, respectively). In conclusion, many patients experience mild adverse reactions after completing oral immunotherapy and some require injectable epinephrine. Progressive desensitization, both clinically and in basophil reactivity, occurs over time.
Collapse
|
68
|
Abu-Kishk I, Zohar E, Berkovitch M, Kozer E, Seguier-Lipszyc E, Klin B, Elizur A. Factors associated with empyema in children with community acquired pneumonia. Minerva Pediatr 2015; 67:473-479. [PMID: 25075454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Empyema is a potential complication of community acquired pneumonia but factors predicting this complication are lacking. METHODS A retrospective study of all previously healthy pediatric patients admitted between January 2007 and July 2009 with CAP. Patients with non-lobar pneumonia, RSV bronchiolitis, underlying chronic disease, or hospital-acquired pneumonia were excluded. Preadmission, clinical characteristics on admission, and outcome were compared between patients with and without empyema. Management strategies in patients with empyema were also compared. RESULTS Overall 356 patients were included. Median age was 3.8 ± 3.54 years and 60.7% were males. A total of 43 patients (12%) were diagnosed with empyema. The development of empyema was independently associated, on multivariate analysis, with older age, female gender and antibiotic therapy prior to admission, and with dyspnea, thrombocytopenia and involvement of more than one lobe on chest radiograph on admission. Patients who developed empyema had a longer and more complicated course. Hypoxemia on admission was significantly less frequent in patients with empyema who were treated with antibiotic therapy alone, compared to those treated with chest tube or video-assisted thoracoscopic surgery. CONCLUSION Early identification of dyspnea and thrombocytopenia in patients with community acquired pneumonia could alert physicians on the potential development of empyema. Antibiotic therapy alone may be sufficient in patients with empyema who are mildly hypoxemic on admission.
Collapse
|
69
|
Goldberg MR, Nachshon L, Appel MY, Elizur A, Levy MB, Eisenberg E, Sampson HA, Katz Y. Efficacy of baked milk oral immunotherapy in baked milk-reactive allergic patients. J Allergy Clin Immunol 2015; 136:1601-1606. [PMID: 26194541 DOI: 10.1016/j.jaci.2015.05.040] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/19/2015] [Accepted: 05/19/2015] [Indexed: 02/01/2023]
Abstract
BACKGROUND Patients with IgE-mediated cow's milk allergy who are nonreactive to baked milk (BM) can be desensitized with BM to promote tolerance to unheated milk (UM). OBJECTIVE We sought to test whether patients who are BM reactive can progress in BM oral immunotherapy (OIT) and become desensitized to UM as well. METHODS Fifteen patients (>4 years) who previously failed to complete our milk OIT program were enrolled into the BM OIT protocol. A dose of BM (180 °C for 30 minutes) which was less than the eliciting dose was increased 50% monthly while under medical supervision until the primary outcome dose of 1.3 g/d BM protein was achieved. Basophil reactivity and milk protein-specific IgE binding were analyzed at the first round of BM OIT therapy (T0) and at 12 months of BM treatment. RESULTS In terms of the primary outcome, only 3 (21%) of 14 patients tolerated the 1.3 g/d BM dose. Although some patients initially progressed in BM OIT, 8 of 11 failed because of IgE-mediated reactions. Three did not complete the program because of non-IgE-mediated factors. An increase in challenge threshold to UM was noted in patients continuing until 12 months (P = .003), including those among whom reactions precluded continuation in the program. Patients (n = 3) who successfully reached maintenance had decreased milk-specific IgE reactivity. Furthermore, the mean difference at T0 between induced HM and UM percentages of CD203c expression was significantly lower in patients who successfully completed BM OIT than in those who did not (-11% vs 4.4%, P = .0002), which is consistent with their decreased clinical reactivity to BM. CONCLUSIONS Although use of hypoallergenic BM in OIT is a promising therapy, care must be taken before its administration in BM-reactive patients because of the risk for anaphylaxis and only limited increase in challenge threshold attained.
Collapse
|
70
|
Nachshon L, Goldberg MR, Elizur A, Levy MB, Schwartz N, Katz Y. A Web site-based reporting system for monitoring home treatment during oral immunotherapy for food allergy. Ann Allergy Asthma Immunol 2015; 114:510-5. [PMID: 25940735 DOI: 10.1016/j.anai.2015.04.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 03/25/2015] [Accepted: 04/13/2015] [Indexed: 01/31/2023]
Abstract
BACKGROUND Reactions during the home treatment phase of oral immunotherapy (OIT) are not uncommon. An ongoing accurate reporting of home treatment outcomes is crucial for the safety and success of OIT. Previous reports have shown that as few as 20% of patients are truly compliant with paper-based diaries. OBJECTIVE To develop a Web site-based electronic reporting system (web-RS) for monitoring home treatment during OIT for food allergy. METHODS A web-RS was developed and incorporated a thorough questionnaire querying for pertinent data including the dose(s) consumed, occurrence and details of adverse reactions, treatment(s), and relevant potential exacerbating factors. All patients enrolled in milk, peanut, or egg OIT programs for at least 4 weeks from November 2012 through January 2014 were introduced to web-RS (n = 157). Successful reporting through web-RS was defined by consecutive reporting during the first home treatment phase (24 days) after its introduction. Comparisons were made with a previous group of OIT-treated patients (n = 100) who reported by E-mail. RESULTS Successful reporting was achieved by 142 of 157 patients (90.44%) in contrast to a 75% success rate with E-mail (P = .0009). The odds for successful reporting using web-RS were 3.1 (95% confidence interval 1.6-6.3) times higher compared with using E-mail. Mild reactions were reported more frequently with web-RS (P = .0032). Patient reports were constantly available in real time for medical staff review. No complaints regarding web-RS feasibility were reported. One risk factor for failure to use web-RS was a patient's prior successful OIT experience without using web-RS (P = .012). CONCLUSION A web-RS can be a powerful tool for improving OIT safety by achieving a high level of patient cooperation in reporting home treatment results.
Collapse
|
71
|
Goldberg M, Appel M, Elizur A, Katz Y. Synergistic effects of lipopolysaccharide on Treg cell generation is through an IDO-dependent pathway (IRC11P.431). THE JOURNAL OF IMMUNOLOGY 2015. [DOI: 10.4049/jimmunol.194.supp.197.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Abstract
Over the past several years there has been increased awareness of the importance of early-life exposures, to long term immune disposition. Using lipopolysaccharide (LPS) activation as a surrogate marker for environmental stimulation, we previously noted that a high proliferative response to LPS in cord blood mononuclear cells (CBMC) was impaired in infants born to atopic parents (Ped. Res. 2013 Aug;74(2):211-6). Furthermore, LPS treatment can result in hypomethylation of the FOXP3 promoter in CBMC. To explore the role of LPS in promoting an immunoregulatory phenotype in CBMC, its effects on the generation of Treg cells was explored. LPS minimally induced Foxp3 expression on FACS analysis. However, in a subset of CBMC (7/14), it synergistically increased the generation of Foxp3+ Tregs induced by T cell stimulation by anti-CD3 antibody and IL-2. Priming by LPS was a necessary first step for this synergy. LPS treatment of CBMC increased indoleamine pyrrole 2,3-dioxygenase (IDO)-1 and IDO-2 expression, characteristically expressed in tolerogenic dendritic cells. Importantly, the addition of 1-Methyltryptophan, an IDO inhibitor, completely blocked FoxP3 expression. These results suggest that LPS priming, working through an IDO-dependent pathway may have early effects on the cellular milieu, resulting in the generation of Treg cells. Future experimentation will address whether early life environmental induction of Tregs is indicative of one's longer term immune disposition.
Collapse
|
72
|
Fernández JA, Bubner EJ, Takeuchi Y, Yoshizaki G, Wang T, Cummins SF, Elizur A. Primordial germ cell migration in the yellowtail kingfish (Seriola lalandi) and identification of stromal cell-derived factor 1. Gen Comp Endocrinol 2015; 213:16-23. [PMID: 25708429 DOI: 10.1016/j.ygcen.2015.02.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 02/07/2015] [Accepted: 02/12/2015] [Indexed: 10/24/2022]
Abstract
Primordial germ cells (PGCs) are progenitors of the germ cell lineage, giving rise to either spermatogonia or oogonia after the completion of gonadal differentiation. Currently, there is little information on the mechanism of PGCs migration leading to the formation of the primordial gonad in perciform fish. Yellowtail kingfish (Seriola lalandi) (YTK) (order Perciforms) inhabit tropical and temperate waters in the southern hemisphere. Fundamental details into the molecular basis of larval development in this species can be easily studied in Australia, as they are commercially cultured and readily available. In this study, histological analysis of YTK larvae revealed critical time points for the migration of PGCs to the genital ridge, resulting in the subsequent development of the primordial gonad. In YTK larvae at 3, 5, 7 and 10 days post hatch (DPH), PGCs were not yet enclosed by somatic cells, indicating the primordial gonad had not yet started to form. While at 15, 18 and 20 DPH PGCs had already settled at the genital ridge and started to become enclosed by somatic cells indicating the primordial gonad had started to develop. A higher number of PGCs were observed in the larvae at 15 and 18 DPH indicating PGCs proliferation, which corresponds with them becoming enclosed by the somatic cells. Directional migration of PGCs toward the genital ridge is a critical event in the subsequent development of a gonad. In zebrafish, mouse and chicken, stromal-cell derived factor (SDF1) signalling is one of the key molecules for PGC migration. We subsequently isolated from YTK the SDF1 (Slal-SDF1) gene, which encodes for a 98-residue precursor protein with a signal peptide at the N-terminus. There is spatial conservation between fish species of four cysteine residues at positions C9, C11, C34 and C49, expected to form disulphide bonds and stabilize the SDF structure. In YTK, Slal-SDF1 gene expression analyses shows that this gene is expressed in larvae from 1 to 22 DPH and demonstrates distinct spatial localisation in the larvae at 7 DPH. These results provide a platform for further studies into the molecular machinery of PGC migration in yellowtail kingfish, as well as other perciform fish species.
Collapse
|
73
|
Nachshon L, Goldberg MR, Elizur A, Levy MB, Schwartz N, Katz Y. Web-Based Reporting Increases Reporting Compliance during the Home Treatment Phase of OIT. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
74
|
Elizur A, Goldberg MR, Levy MB, Nachshon L, Appel M, Katz Y. Long Term Follow-up of Patients Requiring Injectable Epinephrine Following Completion of Oral Immunotherapy for IgE-Cow's Milk Allergy. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
75
|
Katz Y, Appel MY, Goldberg MR, Elizur A, Nachshon L, Levy MB. Long Term Follow-up of Patients Successfully Completing Oral Immunotherapy for IgE-Mediated Cow's Milk Allergy. J Allergy Clin Immunol 2015. [DOI: 10.1016/j.jaci.2014.12.1013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|