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Zhong J, Li W, Yang S, Shen Y, Li X. Causal association between air pollution and allergic rhinitis, asthma: a Mendelian randomization study. Front Public Health 2024; 12:1386341. [PMID: 39076418 PMCID: PMC11284075 DOI: 10.3389/fpubh.2024.1386341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 07/03/2024] [Indexed: 07/31/2024] Open
Abstract
Backgrounds Observational studies suggest that air pollutants, including particulate matter and nitrogen compounds, could elevate asthma and allergic rhinitis health risks. Nevertheless, the exact nature of the causal relationship between air pollution and asthma and allergic rhinitis remains unknown. This study utilizes the Mendelian randomization (MR) technique to explore the potential causal links between air pollution components (PM2.5, PM2.5-10, PM10, NO₂, and nitrogen dioxide) and the incidence of allergic rhinitis and asthma. Methods A MR study utilized summary statistics from GWAS that are publicly accessible. The inverse variance weighting (IVW) approach served as the foundational analysis technique. To ensure robustness, supplementary methodologies such as the weighted median, MR-Egger regression, simple mode, and weighted model were also applied. Heterogeneity was evaluated using Cochran's Q test, and the presence of pleiotropy was determined through MR-Egger regression. The MR-PRESSO test was employed for outlier detection, and the analysis's sensitivity was scrutinized via a leave-one-out strategy. Results The IVW technique showed a strong correlation between PM10 and asthma (OR = 0.625, 95% CI = 0.396-0.988, p = 0.044). No significant associations were found between asthma and other air pollutants such as PM2.5, PM2.5-10, NO₂, or nitrogen dioxide. Similarly, allergic rhinitis showed no causal relationships with any studied air pollution metrics. Pleiotropy was absent in the findings. Sensitivity analyses, employing the leave-one-out method, confirmed the stability of these results, unaffected by individual single nucleotide polymorphisms (SNPs). Conclusion This Mendelian randomization study establishes a causal link between PM10 exposure and asthma, suggesting that interventions to reduce air pollution may decelerate the adverse progression of asthma.
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Affiliation(s)
- Juan Zhong
- Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Weiye Li
- Chengdu Integrated TCM and Western Medicine Hospital/Chengdu First People’s Hospital, Chengdu, China
| | - Shasha Yang
- Otolaryngology Department, Guizhou University of Traditional Chinese Medicine, Guiyang, China
| | - Yifeng Shen
- TCM Regulating Metabolic Diseases Key Laboratory of Sichuan Province, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Xinrong Li
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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He J, Gao J, Zhao Y, Chen S. Distributional Characteristics Analysis of Allergens in Patients with Allergic Rhinitis in Southern Fujian Province, China. J Asthma Allergy 2024; 17:477-489. [PMID: 38798279 PMCID: PMC11128227 DOI: 10.2147/jaa.s453914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 05/07/2024] [Indexed: 05/29/2024] Open
Abstract
Background Allergic rhinitis (AR) is a chronic inflammatory disease of the nasal mucosa. However, few studies focus on the distributional characteristics of allergens in AR patients in Southern Fujian Province, China. Methods A skin prick test (SPT) was performed and eight common allergens including Dermatophagoides farinae (Df), Dermatophagoides pteronyssinus (Dpt), weeds, animal dander, molds, cockroaches, and mangoes were chosen. Results The positive reactions rate to the allergens was 65.79% in 6689 patients in Southern Fujian Province. Positive reactions to Df and Dpt had a negative association with age, whereas positive reactions to cockroach and weed had a positive association with age. A linear trend analysis demonstrated a significant positive relationship between positive reactions to various allergens from 2016 to 2019. Positive reactions to Df and Dpt were both correlated with the season. Positive reactions to Df, Dpt, cockroach and weed were related to disease duration and positive reactions to cockroach were correlated with city residence. Multivariate analysis revealed that male positive reactions gradually decreased with age (≤ 60), in contrast to female (≤ 60) positive reactions. Statistical difference was observed between the genders with regard to AR incidence from 2016 to 2019. The positive rate of skin tests was highest in summer in men, whereas in women it was lowest in summer. The gender composition ratios of positive cases in Xiamen, Zhangzhou, and Quanzhou cities differed significantly. The proportion of patients with positive reactions to the allergens in the three cities decreased with age. The highest proportions of patients with positive reactions all occurred during summer in the three cities. Furthermore, there were statistically significant differences in the age composition ratios across the seasons. Conclusion This study analyzed the distributional characteristics of AR allergens in Southern Fujian Province, China. These findings will inform specific immunotherapy for AR patients.
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Affiliation(s)
- Jingjing He
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, People’s Republic of China
- Teaching Hospital of Fujian Medical University, Xiamen, 361003, People’s Republic of China
- Xiamen Key Laboratory of Otolaryngology Head and Neck Surgery, Xiamen, 361003, People’s Republic of China
| | - Jing Gao
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, People’s Republic of China
- Teaching Hospital of Fujian Medical University, Xiamen, 361003, People’s Republic of China
- Xiamen Key Laboratory of Otolaryngology Head and Neck Surgery, Xiamen, 361003, People’s Republic of China
| | - Yan Zhao
- Army 73rd Group Military Hospital, Chenggong Hospital Affiliated to Xiamen University, Xiamen, 361000, People’s Republic of China
| | - Shuai Chen
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, People’s Republic of China
- Xiamen Key Laboratory of Otolaryngology Head and Neck Surgery, Xiamen, 361003, People’s Republic of China
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Hussain S, Rasool R, Shafi T, Gull A, Qureshi TA, Jan R, Shah ZA. Evaluation of SOCS5 mRNA and its association with serum IL-12 levels and rs41379147 SNP in various subsets of allergic disorders: A case control study. Mol Immunol 2023; 162:102-110. [PMID: 37672963 DOI: 10.1016/j.molimm.2023.08.011] [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: 06/12/2023] [Revised: 08/21/2023] [Accepted: 08/23/2023] [Indexed: 09/08/2023]
Abstract
BACKGROUND The SOCS proteins act as suppressors of cytokine signaling by impeding certain signaling pathways. SOCS5, a constituent of the SOCS family, has been associated with the management of allergic reactions, primarily by impeding the signaling of interleukin-4 (IL-4), which is known to have a cardinal function in accelerating the development of an allergic reaction. The key goal of our research was to explore the probable ramifications of the SOCS5 single nucleotide polymorphism (SNP) namely rs41379147 on the expression of SOCS5 mRNA and serum IL-12 levels, as well as to analyze the interaction between SOCS5 genotypes and various clinicopathological parameters in atopic diseases. METHODS The study involved the enrollment of 314 subjects comprising 154 atopic individuals and 160 healthy controls. PCR-RFLP was employed to conduct SNP analysis. Real-Time PCR was employed to quantify SOCS5 mRNA. The enzyme-linked immunosorbent assay (ELISA) technique was used for the quantification of interleukin-12 and total IgE levels in the serum while as chemiluminescence was used to determine Vitamin D levels. RESULTS The PCR-RFLP analysis indicated a lack of statistically significant variation in genotypic and allelic frequencies between the cases and controls (p > 0.05) for - 9147 C/T SNP either in total atopy (OR-0.70, 95% CI=0.43-1.12, p =0.15), and on subgroup stratifications of chronic urticaria (OR-0.81, 95 % CI = 0.42-1.59, p = 0.61), allergic rhinitis (OR-0.63, 95 % CI = 0.33-1.19, p = 0.16) and bronchial asthma (OR-0.66,95% CI = 0.29-1.4, p=0.32). There was reduced mRNA expression of SOCS5 in total atopic cases, allergic rhinitis, bronchial asthma and chronic urticaria in comparison to controls which advocates the fact that SOCS5 has a protective role in allergic disease development. Despite the reduced amounts of IL-12 in total atopic cases and different allergic disorders in comparison to controls, IL-12 showed significant positive correlation with SOCS5 mRNA expression (p < 0.05). CONCLUSION SOCS5 SNP rs41379147(C/T) does not pose any significant risk towards the development of any allergic disorder and has no impact on the expression of SOCS5 and IL-12. Our study has shown the reduced mRNA expression of SOCS5 among individuals diagnosed with chronic urticaria, allergic rhinitis and bronchial asthma and the expression of SOCS5 showed complete dependence on the cytokine milieu of IL12. The modulation of SOCS5 and IL-12 may represent potential curative targets for treating the menace of allergic diseases and present promising avenues for future investigation.
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Affiliation(s)
- Showkat Hussain
- Department of Immunology and Molecular Medicine, SKIMS, Soura, Srinagar, J&K 190011, India
| | - Roohi Rasool
- Department of Immunology and Molecular Medicine, SKIMS, Soura, Srinagar, J&K 190011, India.
| | - Tabasum Shafi
- Department of Immunology and Molecular Medicine, SKIMS, Soura, Srinagar, J&K 190011, India
| | - Ayaz Gull
- Department of Immunology and Molecular Medicine, SKIMS, Soura, Srinagar, J&K 190011, India
| | - Taha Ashraf Qureshi
- Department of Immunology and Molecular Medicine, SKIMS, Soura, Srinagar, J&K 190011, India
| | - Rafi Jan
- Department of Internal & Pulmonary Medicine, SKIMS, Soura, Srinagar, J&K 190011, India
| | - Zafar Amin Shah
- Department of Immunology and Molecular Medicine, SKIMS, Soura, Srinagar, J&K 190011, India
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Yang H, Qu Y, Gao Y, Sun S, Ding R, Cang W, Wu R, Wu J. Role of the dietary components in food allergy: A comprehensive review. Food Chem 2022; 386:132762. [PMID: 35334324 DOI: 10.1016/j.foodchem.2022.132762] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 03/16/2022] [Accepted: 03/19/2022] [Indexed: 12/18/2022]
Abstract
Currently, the increasing incidence of food allergy is considered a major public health and food safety concern. Importantly, food-induced anaphylaxis is an acute, life-threatening, systemic reaction with varied clinical presentations and severity that results from the release of mediators from mast cells and basophils. Many factors are blamed for the increasing incidence of food allergy, including hygiene, microbiota (composition and diversity), inopportune complementary foods (a high-fat diet), and increasing processed food consumption. Studies have shown that different food components, including lipids, sugars, polyphenols, and vitamins, can modify the immunostimulating properties of allergenic proteins and change their bioavailability. Understanding the role of the food components in allergy might improve diagnosis, treatment, and prevention of food allergy. This review considers the role of the dietary components, including lipids, sugars, polyphenols, and vitamins, in the development of food allergy as well as results of mechanistic investigations in in vivo and in vitro models.
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Affiliation(s)
- Hui Yang
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Yezhi Qu
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Yaran Gao
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Shuyuan Sun
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Ruixue Ding
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Weihe Cang
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China
| | - Rina Wu
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China.
| | - Junrui Wu
- College of Food Science, Shenyang Agricultural University, Engineering Research Center of Food Fermentation Technology, Liaoning, Key Laboratory of Microbial Fermentation Technology Innovation, Shenyang, Shenyang 110866, China.
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