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Zhao L, Ma T, Wang X, Wang H, Liu Y, Wu S, Fu L, Gilissen L, van Ree R, Wang X, Gao Z. Food-Pollen Cross-Reactivity and its Molecular Diagnosis in China. Curr Allergy Asthma Rep 2024; 24:497-508. [PMID: 38976200 DOI: 10.1007/s11882-024-01162-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/26/2024] [Indexed: 07/09/2024]
Abstract
PURPOSE OF REVIEW Plant-derived foods are one of the most common causative sources of food allergy in China, with a significant relationship to pollinosis. This review aims to provide a comprehensive overview of this food-pollen allergy syndrome and its molecular allergen diagnosis to better understand the cross-reactive basis. RECENT FINDINGS Food-pollen cross-reactivity has been mainly reported in Northern China, Artemisia pollen is the major related inhalant source, followed by tree pollen (Betula), while grass pollen plays a minor role. Pollen allergy is relatively low in Southern China, with allergies to grass pollen being more important than weed and tree pollens. Rosaceae fruits and legume seeds stand out as major related allergenic foods. Non-specific lipid transfer protein (nsLTP) has been found to be the most clinically relevant cross-reacting allergenic component, able to induce severe reactions. PR-10, profilin, defensin, chitinase, and gibberellin-regulated proteins are other important cross-reactive allergen molecules. Artemisia pollen can induce allergenic cross-reactions with a wide range of plant-derived foods in China, and spring tree pollens (Betula) are also important. nsLTP found in both pollen and plant-derived food is considered the most significant allergen in food pollen cross-reactivity. Component-resolved diagnosis with potential allergenic proteins is recommended to improve diagnostic accuracy and predict the potential risk of causing allergic symptoms.
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Affiliation(s)
- Lan Zhao
- Allergy Research Center, Zhejiang University, Hangzhou, 310058, China
| | - Tingting Ma
- Department of Allergy, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Xiaoyan Wang
- Department of Allergy, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Hongtian Wang
- Department of Allergy, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Yi Liu
- Hangzhou Zheda Dixun Biological Gene Engineering Co. Ltd, Hangzhou, China
| | - Shandong Wu
- Hangzhou Zheda Dixun Biological Gene Engineering Co. Ltd, Hangzhou, China
| | - Linglin Fu
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou, 310018, China
| | - Luud Gilissen
- Plant Breeding, Wageningen University & Research, Wageningen, The Netherlands
| | - Ronald van Ree
- Departments of Experimental Immunology and of Otorhinolaryngology, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Xueyan Wang
- Department of Allergy, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
| | - Zhongshan Gao
- Allergy Research Center, Zhejiang University, Hangzhou, 310058, China.
- Department of Allergy, Beijing Shijitan Hospital, Capital Medical University, Beijing, China.
- Institute of Immunology, School of Medicine, Zhejiang University, Hangzhou, 310058, China.
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Ge X, Ju G, Lv X, Sui X, Zhang Y, Liang L, Yang Q, Wu W, Lv L. Reducing the allergenicity of tropomyosin in shrimp by covalent conjugation with quercetin and chlorogenic acid. Int J Biol Macromol 2024; 262:130099. [PMID: 38342255 DOI: 10.1016/j.ijbiomac.2024.130099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 02/01/2024] [Accepted: 02/08/2024] [Indexed: 02/13/2024]
Abstract
The study aimed to assay the allergenicity of shrimp tropomyosin (TM) following covalent conjugation with quercetin (QR) and chlorogenic acid (CA). The structure of the TM-polyphenol covalent conjugates was examined by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE), circular dichroism (CD), fluorescence, differential scanning calorimetry (DSC), and Fourier Transform infrared spectroscopy (FTIR). Potential allergenicity was evaluated using in vitro and in vivo methods. The results showed that QR and CA induced structural changes in TM through aggregation. RBL-2H3 cell results showed that TM-QR and TM-CA covalent conjugates reduced the release of β-hexosaminidase and histamine, respectively. In the mice model, TM-QR and TM-CA covalent conjugates reduced the level of IgE, IgG, IgG1, histamine, and mMCP-1 in sera. Furthermore, the allergenicity was reduced by suppressing Th2-related cytokines (IL-4, IL-5, IL-13) and promoting Th1-related cytokines (IFN-γ). These research findings demonstrate that the covalent binding of TM with QR and CA, modifies the allergenic epitopes of shrimp TM, thereby reducing its potential allergenicity. This approach holds practical applications in the production of low-allergenicity food within the food industry.
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Affiliation(s)
- Xinyu Ge
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Guangxiu Ju
- Qingdao Municipal Center For Disease Control & Prevention, 175 Shandong Road shibei District, Qingdao, Shandong Province 266033, China
| | - Xiaojing Lv
- Qingdao Municipal Center For Disease Control & Prevention, 175 Shandong Road shibei District, Qingdao, Shandong Province 266033, China
| | - Xiufen Sui
- Qingdao Municipal Center For Disease Control & Prevention, 175 Shandong Road shibei District, Qingdao, Shandong Province 266033, China
| | - Yalin Zhang
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Lifan Liang
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Qingli Yang
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Wei Wu
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Liangtao Lv
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China.
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Brasal-Prieto M, Fernández-Prades L, Dakhaoui H, Sobrino F, López-Enríquez S, Palomares F. Update on In Vitro Diagnostic Tools and Treatments for Food Allergies. Nutrients 2023; 15:3744. [PMID: 37686776 PMCID: PMC10489659 DOI: 10.3390/nu15173744] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/15/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
Food allergy (FA) is an adverse immunological reaction to a specific food that can trigger a wide range of symptoms from mild to life-threatening. This adverse reaction is caused by different immunological mechanisms, such as IgE-mediated, non-IgE-mediated and mixed IgE-mediated reactions. Its epidemiology has had a significant increase in the last decade, more so in developed countries. It is estimated that approximately 2 to 10% of the world's population has FA and this number appears to be increasing and also affecting more children. The diagnosis can be complex and requires the combination of different tests to establish an accurate diagnosis. However, the treatment of FA is based on avoiding the intake of the specific allergenic food, thus being very difficult at times and also controlling the symptoms in case of accidental exposure. Currently, there are other immunomodulatory treatments such as specific allergen immunotherapy or more innovative treatments that can induce a tolerance response. It is important to mention that research in this field is ongoing and clinical trials are underway to assess the safety and efficacy of these different immunotherapy approaches, new treatment pathways are being used to target and promote the tolerance response. In this review, we describe the new in vitro diagnostic tools and therapeutic treatments to show the latest advances in FA management. We conclude that although significant advances have been made to improve therapies and diagnostic tools for FA, there is an urgent need to standardize both so that, in their totality, they help to improve the management of FA.
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Mahesh PA, Kaleem Ullah M, Parthasarathi A. Allergic sensitization to foods in India and other Low-Middle-income countries. Clin Exp Allergy 2023. [PMID: 36825760 DOI: 10.1111/cea.14300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 01/06/2023] [Accepted: 02/05/2023] [Indexed: 02/25/2023]
Abstract
Food allergy is an important cause of morbidity, significantly affecting the quality of life of the sufferer. Most food allergy research has been undertaken in high-income countries. Here, we summarize literature regarding food allergy in India and other low-middle-income countries (LMIC). We provide summaries of self-reported adverse food reactions and food sensitization in these regions by reviewing published community-based studies of prevalence, burden, and risk factors. We identified 2 community-based studies of food allergy prevalence in Karnataka, India, which estimate that food allergy affects just 0.14% of children and 1.2% of adults. The overall prevalence of allergic sensitization to 'any' food was 26.5% in adults and 19.1% in children by serum-specific IgE; but only 4.48% in children by skin prick test. We identified a further 28 studies in other LMICs, mainly from China but also Turkey, South Africa, Ghana, Mexico, Brazil, Thailand, Philippines, and Korea. The overall prevalence of allergic sensitization to 'any' food ranged from 0.11% to 16.8% in children using serum-specific IgE and 0.14% to 9.6% in children by skin prick test. The questionnaires and skin prick testing materials used and number of allergens tested varied significantly between studies. Other than Karnataka, there is no information on prevalence of food sensitization and probable food allergy in the community in India. Similar lack of information is noted among the majority of the 136 LMICs. Where community-based studies have been undertaken, there is wide variation in the prevalence and patterns of food sensitization across different LMICs, at least partly due to variations in study methodology. International collaboration is required in order to formally assess food allergy prevalence and burden across representative samples from multiple LMICs.
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Affiliation(s)
- Padukudru Anand Mahesh
- Department of Respiratory Medicine, Special Interest Group, Environment and Respiratory Diseases, JSS Medical College, JSSAHER, Mysore, Karnataka, India
| | - Mohammed Kaleem Ullah
- Centre for Excellence in Molecular Biology and Regenerative Medicine (A DST-FIST Supported Center), Department of Biochemistry (A DST-FIST Supported Department), JSS Medical College, JSSAHER, Karnataka, Mysore, India.,Division of Infectious Disease and Vaccinology, School of Public Health, University of California, Berkeley, California, USA
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Multi-Perspective Observation on the Prevalence of Food Allergy in the General Chinese Population: A Meta-Analysis. Nutrients 2022; 14:nu14235181. [PMID: 36501216 PMCID: PMC9736235 DOI: 10.3390/nu14235181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/19/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Reliable estimates of the prevalence of food allergy (FA) among the general Chinese population have remained unclear. This meta-analysis aims to provide an accurate estimate of FA prevalence in China with comprehensive data. A systematic literature search was conducted in eight electronic databases, i.e., China National Knowledge Infrastructure, Wanfang, Weipu, China Biology Medicine, Web of Science, PubMed, Cochrane, and Embase. A random-effects model was used to analyze the pooled prevalence of FA for four different assessment methods. A total of 46 eligible articles were included in the narrative synthesis, and 41 articles were ultimately included in the meta-analysis. Overall, the pooled prevalence of self-reported FA, self-reported physician-diagnosed FA, SPT (specific skin prick test)-positive FA, and OFC (open food challenge)-positive FA were 11.5% (95% CI: 9.8-13.5%), 5.3% (95% CI: 4.2-6.5%), 11.6% (95% CI: 9.6-14.1%), and 6.2% (95% CI: 4.4-8.7%), respectively. Subgroup analyses suggested that the prevalence of FA was affected by age, year of data collection, region, and sample size, but not by gender. This meta-analysis indicated that FA is common among Chinese people, with an increasing trend in prevalence during the past two decades. Given the high heterogenicity between these studies, a national survey with a large sample size based on standardized diagnosis is urgently needed to gain a more scientific understanding of the actual situation of food allergy in China.
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