scholarly journals Prevalence of allergic disorders and risk factors associated with food allergy in Turkish preschoolers

2021 ◽  
Vol 49 (1) ◽  
pp. 11-16
Author(s):  
Ayşen Genç Aksoy ◽  
Perran Boran ◽  
Elif Karakoc-Aydiner ◽  
Gulbin Gokcay ◽  
Zeynep Ulker Tamay ◽  
...  

Background: The prevalence of allergic disorders is on the rise, affecting about 10% of the population. In this retrospective cohort, we investigated prevalence of allergic disorders, associated risk factors, and the outcome of food allergies.  Material and methods: We analyzed data from birth cohorts of two university hospitals’ well-child outpatient clinics. Factors related to onset and type of allergic diseases were assessed from demographic, socioeconomic, and clinical data.  Results: Analyses were performed on 949 (431F/518M) infants at a mean current age of 28±6 months. Any allergic disease was established among 177 cases (22%); atopic dermatitis in 123 (12.8%), respiratory allergies in 55 (5.7%), and food allergy in 41 (4.3%). The risk for allergic disorders was found to be significantly increased for male gender (OR: 2.31, 95% CI; 1.54–3.46), and positive parental atopy (OR: 1.94, 95% CI; 1.31–2.86). The risk of food allergies was significantly higher in the male gender (OR: 2.47, 95% CI; 1.21–5.02), who consumed egg-white between 6 and 12 months (OR: 2.34, 95% CI; 1.22–4.48), and who were formula-fed before 6 months (OR: 2.16, 95% CI; 1.14–4.10). We found no significant association between the rate of food allergy outgrowth or food induced-anaphylaxis with regards to the timing of introducing egg-white into the diet.  Conclusions: Although the introduction of egg-white into infant diet at 6–12 months of life appeared as an independent risk for any food allergy, none of the patients developed anaphylaxis. Age at symptom onset and outgrowing food allergy were similar compared to those introduced egg-white after 12 months. We recommend promoting exclusive breastfeeding during the first 6 months of life, and avoidance of prolonged restrictive diets for children with food allergy.   

Author(s):  
Daniela Roehrl ◽  
Susanne Brandstetter ◽  
Linda Siziba ◽  
Dietrich Rothenbacher ◽  
Vincent Gaertner ◽  
...  

Background: The prevalence of food allergies (FA) in children increased rapidly at the turn of the century. The EuroPrevall study identified Germany as a country with very high prevalence of FA at that time. Using two large German birth cohorts we provide an update of the status quo ten years later. Methods: KUNO Kids and Ulm SPATZ Health studies are two ongoing prospective birth cohorts. Information on FA was obtained by questionnaires at birth and after 6, 12 and 24 months. Univariate logistic regression analyses were performed to investigate risk factors during pregnancy, birth and early childhood. Results: In 1139 and 1006 children from KUNO Kids and SPATZ the point prevalence of parent-reported FA symptoms at the ages of 1 and 2 years was 13.2% and 13.9 % in KUNO Kids. Doctor’s diagnosed FA at 1 and 2 years was 2.4% and 2.7% in KUNO Kids and 2.3% and 3% in SPATZ. Cow’s milk and citrus fruits were most frequently suspected by parents to cause FA symptoms. Atopy in the child was associated with a higher frequency of FA at any time, whereas atopy in first degree relatives was only associated with FA at year 1. Smoke exposure during pregnancy was a risk for FA at age 2. Conclusion: The prevalence of food allergy seems to have plateaued in the last 10 years in Germany. FA is often suspected by parents but only rarely diagnosed by oral food challenge. Risk factor analysis may help to establish personalized health approaches.


2021 ◽  
Vol 2021 ◽  
pp. 1-8
Author(s):  
Jiani Li ◽  
Jichao Sha ◽  
Liwei Sun ◽  
Dongdong Zhu ◽  
Cuida Meng

Regulatory T (Treg) cells are a subtype of CD4+ T cells that play a significant role in the protection from autoimmunity and the maintenance of immune tolerance via immune regulation. Epigenetic modifications of Treg cells (i.e., cytosine methylation at the promoter region of the transcription factor, Forkhead Box P3) have been found to be closely associated with allergic diseases, including allergic rhinitis, asthma, and food allergies. In this study, we highlighted the recent evidence on the contribution of epigenetic modifications in Treg cells to the pathogenesis of allergic diseases. Moreover, we also discussed directions for future clinical treatment approaches, with a particular emphasis on Treg cell-targeted therapies for allergic disorders.


Author(s):  
Vera P. Vavilova ◽  
Alexander M. Vavilov ◽  
Sofia A. Tsarkova ◽  
Irina A. Nechaeva ◽  
Ekaterina Iu. Burmistrova ◽  
...  

Background. At present, due to high prevalence of allergic diseases which start in early childhood, the search for new prevention and treatment methods is in great demand. Aim. To study the effectiveness of the Russian-produced enterosorbent colloidal silicon dioxide in the treatment of patients with food allergies combined with atopic dermatitis and gastrointestinal manifestations. Materials and methods. An open, randomized, comparative clinical study of the enterosorbent (colloidal silicon dioxide) effectiveness has been conducted in parallel groups of infants and preschool children with food allergy skin and gastrointestinal manifestations. The main groups (1 67 children with food allergies and atopic dermatitis skin manifestations, 3 60 children with food allergies and gastrointestinal manifestations) received, along with basic medication, colloidal silicon dioxide enterosorbent day at an age-specific dosage twice a for 1014 days. Control groups (2 60 children with food allergies and atopic dermatitis skin manifestations, 4 60 children with food allergies and gastrointestinal manifestations) did not receive enterosorbent. All children underwent a clinical, functional and laboratory status assessment, including medical records analysis, a pediatrician clinical examination, narrow specialists (allergist-immunologist) examination, laboratory and instrumental research. The treatment effectiveness was being evaluated on the 14th day after the initiation of therapy and after 30 days. The therapy effectiveness was assessed based on regression of skin syndrome clinical and gastrointestinal manifestations, intoxication syndrome and laboratory parameters (IgE, hemogram eosinophilia duration). The study was conducted from 2017 to 2019. On the basis of LLC Modern Medical Technologies Clinics (Kemerovo). Results. Therapy with colloidal silicon dioxide increases the significance of food allergy skin manifestations positive dynamics, which makes it possible to reduce the volume of medication and the duration of topical glucocorticosteroids use to 5.340.35 days, in the compared group 10.520.85 days (p=0.002). All patients with food allergy combined with atopic dermatitis in the main and control groups noted positive clinical dynamics, appearing as decrease in the skin inflammatory reaction area and intensity. However, the of colloidal silicon dioxide use accelerates skin syndrome condition normalization significantly (group 1 skin syndrome persisted in 2.92.0% after 14 days, in group 2 18.34.9%; p=0.003). Colloidal silicon dioxide use accelerates humoral immunity state normalization (IgE) and peripheral blood parameters (hemogram eosinophilia). Colloidal silicon dioxide therapy accelerates food allergy gastrointestinal manifestations positive dynamics in children. Two weeks after the sorbent therapy started, gastrointestinal tract lesions symptoms frequency is less than in patients in the compared group. Diarrhea frequency before treatment started was 48.36.5%, 45.06.4% in the compared groups. After two weeks it decreased to 6.73.2% with the Polisorb therapy and to 16.64.8% in the compared group (p=0.003). Abdominal pain was noted by patients of both groups equally often before the study began. After 2 weeks, abdominal pain was noted by ten percent 10.03.9% of patients taking colloidal silicon dioxide and 25.05.6% of the compared group (p=0.009). Conclusion. Taking into account the composition of the colloidal silicon dioxide, it makes sense to include this medication in childrens food allergies complex treatment starting from infancy, which contributes to a more rapid relief of gastrointestinal system damage symptoms, life quality improvement for children and their parents, and decrease in medication load. When using colloidal silicon dioxide in children with food allergies, a faster dynamics of disease symptoms relief (p=0.003) was noted, which allows us to conclude that it is highly effective in the treatment of allergic diseases associated with food sensitization.


2019 ◽  
Vol 40 (3) ◽  
pp. 138-145 ◽  
Author(s):  
M. Asghar Pasha ◽  
Gargi Patel ◽  
Russell Hopp ◽  
Qi Yang

Background: Over the past decade, there has been increasing interest and research into understanding the type 2 immune responses by the epithelium-derived cytokines interleukin (IL) 33, IL-25, and thymic stromal lymphopoietin. Innate lymphoid cells (ILC) are a unique family of effector immune cells that functionally resemble T cells but lack clonal distributed antigen receptors. Group 2 ILCs, ILC2s, are known for their capability to secrete proallergic cytokines, including IL-5 and IL-13. ILC2s are enriched at mucosal barriers in lung, gut, and skin, and their activation has been associated with a variety of allergic disorders. Objective: To study the role of ILC2 in different allergic disorders, including allergic rhinitis, asthma, atopic dermatitis, and food allergies. Methods: A MEDLINE search was performed for articles that reported on ILC2 in allergic disorders, including allergic rhinitis, asthma, atopic dermatitis, and food allergies. Results: A review of the literature revealed an important role of ILC2 in various allergic disorders. Conclusion: Identification of ILC2s in patients with allergic rhinitis, asthma, and atopic dermatitis indicates that these cells may represent a new therapeutic target. In this review, we discussed the current understanding of ILC2 biology and its function and regulation in various allergic diseases.


Author(s):  
Shuo Wang ◽  
Yuan Wei ◽  
Luyan Liu ◽  
Zailing Li

Regulating the composition of human breastmilk has the potential to prevent allergic diseases early in life. The composition of breastmilk is complex, comprising varying levels of oligosaccharides, immunoactive molecules, vitamins, metabolites, and microbes. Although several studies have examined the relationship between different components of breastmilk and infant food allergies, few have investigated the relationship between microorganisms in breastmilk and infant food allergy. In the present study, we selected 135 healthy pregnant women and their full-term newborns from a cohort of 202 mother–infant pairs. Among them, 69 infants were exclusively breastfed until 6 mo after birth. At follow-up, 11 of the 69 infants developed a food allergy in infancy while 22 showed no signs of allergy. Thirty-three breastmilk samples were collected within 1 mo after delivery, and 123 infant fecal samples were collected at five time points following their birth. These samples were analyzed using microbial 16S rRNA gene sequencing. The abundance and evenness of the milk microbiota and the number of differential bacteria were higher in the breastmilk samples from the non-allergy group than in those from the food allergy group. The non-allergy group showed relatively high abundance of Bifidobacterium, Akkermansia, Clostridium IV, Clostridium XIVa, Veillonella, and butyrate-producing bacteria such as Fusobacterium, Lachnospiraceae incertae sedis, Roseburia, and Ruminococcus. In contrast, the abundance of Proteobacteria, Acinetobacter, and Pseudomonas in breastmilk was higher in the food allergy group. A comparison of the changes in dominant differential breastmilk microbiota in the intestinal flora of the two groups of infants over time revealed that the changes in Bifidobacterium abundance were consistent with those in the breastmilk flora. Functional pathway prediction of breastmilk microflora showed that the enhancement of the metabolic pathways of tyrosine, tryptophan, and fatty acids was significantly different between the groups. We suggest that changes in the breastmilk microbiota can influence the development of food allergies. Breastmilk contains several microbes that have protective effects against food allergies, both by influencing the colonization of intestinal microbiota and by producing butyrate. This study may provide new ideas for improving infant health through early intervention with probiotics.


2021 ◽  
Vol 19 (2) ◽  
Author(s):  
Youssef A. Alqahtani ◽  
Ayed A. Shati ◽  
Ahmad A. Alhanshani ◽  
Bayan M. Hanif ◽  
Eman S. Salem ◽  
...  

Background: Food allergy (FA) is increasingly recognized with the highest prevalence in preschool children; there has been a significant increase in hospital admissions for systemic allergic diseases with anaphylaxis and food allergies. Hospital admissions for food allergy were noticed to rise from 6 to 41 per million between 1990 and 2000 worldwide . The prevalence of food allergy is increasing over time with significant geographic variations. It is estimated to affect 6% of children in the United States (USA); according to a study conducted in Makkah, by AL Mokarmah, the prevalence of FA among children attending the well-baby clinic was 22.5% and in Riyadh is 6% among children who visit the allergy clinic at King Khalid University Hospital. FA in children is usually caused by milk (2.5%), egg (1.3%), peanut (0.8%), tree nuts (0.2%), fish (0.1%), as well as shellfish (0.1%), with an overall prevalence of 6%. Methods: In this cross-sectional study, a self-administered questionnaire was used in the data collection. After data were collected, they were entered in the Statistical Software IBM SPSS version 22. Descriptive and inferential statistics were obtained. Results: Out of 980 mothers, 49% were suffering from food allergy, while 28.6% of their children were suffering from food allergy. Shellfish was the most common cause of food allergy (38%). Conclusion: The management of FA in children is improving through the acquisition of new knowledge in diagnosis and treatment. Education of physicians and food-allergic patients about FA and its treatment is becoming recognized as an unmet need. Key words: Food allergy, mother, children, knowledge, prevalence, factors


2020 ◽  
Author(s):  
Somayeh Poudineh ◽  
Forough Shayesteh ◽  
Jamshid Kermanchi ◽  
Ali-Akbar Haghdoost ◽  
Parisa Torabi ◽  
...  

Abstract Background: Disease-related malnutrition is associated with adverse outcomes such as increased rates of morbidity and mortality, prolonged hospital stay, and extra costs of health care. This study was conducted to assess nutritional status among patients and to determine the risk factors for malnutrition in Iran university hospitals. Methods: Persian Nutritional Survey In Hospitals (PNSI) was a cross-sectional study that conducted in 20 university hospitals across Iran. All the patients with age range of 18 to 65 years, who were admitted or discharged, were assessed by subjective global assessment (SGA). Results: In total, 2306 patients were evaluated for malnutrition. Mean values of age and body mass index were 44.7±14 years and 25.2±6 kg/m2, respectively. Malnutrition (SGA-B & C) was identified in 23.9% of the patients, 26.2% and 21% of whom were among the admitted and discharged patients, respectively. The prevalence of malnutrition was higher in burns (78%) and heart surgery (58%) patients. Malnutrition was not associated with age (P=0.1). Multivariate analysis presented male gender (OR=1.023, P<0.001), malignant disease (OR=1.409, P<0.001), length of hospital stay (OR=1.206, P<0.001), and polypharmacy (OR=1.066, P<0.001) as independent risk factors for malnutrition.Conclusion: One out of four patients in the studied university hospitals was suffering from malnutrition; thus, appropriate measures should be taken to ameliorate this condition. Male gender, malignant disease, length of hospital stay, and polypharmacy were identified as independent risk factors for malnutrition.


2020 ◽  
Vol 16 (2) ◽  
pp. 95-105
Author(s):  
Antonella Cianferoni

Food allergies, defined as an immune response to food proteins, affect as many as 8% of young children and 2% of adults in western countries, and their prevalence appears to be rising like all allergic diseases. In addition to well-recognized urticaria and anaphylaxis triggered by IgE antibody– mediated immune responses, there is an increasing recognition of cell-mediated disorders, such as eosinophilic esophagitis and food protein–induced enterocolitis. Non-IgE-Mediated gastrointestinal food allergies are a heterogeneous group of food allergies in which there is an immune reaction against food but the primary pathogenesis is not a production of IgE and activation of mast cells and basophils. Those diseases tend to affect mainly the gastrointestinal tract and can present as acute (FPIES) or chronic reaction, such as Eosinophilic Esophagitis (EoE), Food Protein-Induced Allergic Proctocolitis (FPIAP). The role of food allergy in Non-EoE gastrointestinal Eosinophilic disorders (Non- EoE EGID) is poorly understood. In some diseases like EoE, T cell seems to play a major role in initiating the immunological reaction against food, however, in FPIES and FPIAP, the mechanism of sensitization is not clear. Diagnosis requires food challenges and/or endoscopies in most of the patients, as there are no validated biomarkers that can be used for monitoring or diagnosis of Non-IgE mediated food allergies. The treatment of Non-IgE food allergy is dependent on diet (FPIES, and EoE) and/or use of drugs (i.e. steroids, PPI) in EoE and Non-EoE EGID. Non-IgE mediated food allergies are being being investigated.


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