1
|
Zhou S, Xiao H, Gao M, Wang M, He W, Shu Y, Wang X. Causal role of immune cells in asthma: a Mendelian randomization study. J Asthma 2024:1-7. [PMID: 39087928 DOI: 10.1080/02770903.2024.2387758] [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: 04/05/2024] [Revised: 07/16/2024] [Accepted: 07/30/2024] [Indexed: 08/02/2024]
Abstract
BACKGROUND Immune cells may have a significant role in the pathophysiology of asthma, according to increasing evidence, although it is yet unclear how immune cells cause asthma. Therefore, we aimed to use Mendelian randomization (MR) methods to investigate this causal relationship. METHODS This study explored the causal effects between immune cells and asthma using a two-sample MR technique. Using publicly available genetic data, the causal connection between asthma risk and 731 immune cell phenotypes was investigated. Sensitivity analysis guaranteed the results' stability. To further evaluate the existence of reverse causality, we employed reverse MR analysis. RESULTS According to the inverse-variance weighted (IVW) method, five immune cell phenotypes were found to be statistically significantly associated with asthma risk (p < 0.001). Among them, TCRgd %T cell (OR = 0.968, 95%CI = 0.951 - 0.986), TCRgd %lymphocyte (OR = 0.978, 95%CI = 0.965 - 0.991), HLA DR + NK AC (OR = 0.966, 95% CI = 0.947 - 0.986) and CD3 on CD4 Treg (OR = 0.956, 95%CI= 0.931 - 0.981), four phenotypes that resulted in a decreased risk of asthma. CD25 on transitional (OR = 1.033, 95%CI = 1.014 - 1.052) resulted in an increased risk of asthma. Reverse MR analysis revealed that asthma increases HLA DR + NK AC levels (p < 0.05). CONCLUSION The results of MR analysis showed a causal relationship between immune cell phenotype and asthma risk, which provides a direction for future asthma treatment.
Collapse
Affiliation(s)
- Siding Zhou
- Department of Medical College of Yangzhou University, Yangzhou, China
| | - Hongbi Xiao
- Department of Medical College of Yangzhou University, Yangzhou, China
| | - Mingjun Gao
- Department of Dalian Medical University, Dalian, China
| | - Mengmeng Wang
- Department of Dalian Medical University, Dalian, China
| | - Wenbo He
- Department of Medical College of Yangzhou University, Yangzhou, China
| | - Yusheng Shu
- Department of Thoracic Surgery, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, China
| | - Xiaolin Wang
- Department of Thoracic Surgery, Northern Jiangsu People's Hospital Affiliated to Yangzhou University, Yangzhou, China
| |
Collapse
|
2
|
Yan Z, Chen J, Guo L, Zhang H, Ding Y, Ren G, Mao Y, Bai R, Ma X. Genetic analyses of the bidirectional associations between common mental disorders and asthma. Front Psychiatry 2024; 15:1372842. [PMID: 38903633 PMCID: PMC11187307 DOI: 10.3389/fpsyt.2024.1372842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 05/17/2024] [Indexed: 06/22/2024] Open
Abstract
Objective Although extensive research has explored the link between mental disorders and asthma, the characteristics and patterns of this association are still unclear. Our study aims to examine the genetic causal links between common mental disorders (specifically, anxiety and depression) and asthma. Methods We conducted genetic analyses including linkage disequilibrium score regression (LDSC) and bidirectional two-sample Mendelian randomization (MR) analyses, and utilized summary statistics from recent large-scale Genome-Wide Association Studies (GWASs) in European populations, covering sensation of anxiety or depression, anxiety sensation, depression sensation, anxiety disorders, major depression disorder (MDD), and asthma. Results LDSC revealed significant genetic correlations among sensation of anxiety or depression, MDD and asthma (P < 0.017), highlighting potential genetic correlation between anxiety disorders and asthma (P < 0.05 yet > 0.017). In bidirectional two-sample MR, inverse-variance weighted (IVW) analyses suggested that genetic liability to asthma was significantly associated with an increased risk of sensation of anxiety or depression (OR = 4.760, 95%CI: 1.645-13.777), and MDD (OR = 1.658, 95%CI: 1.477-1.860). Conversely, IVW analyses indicated that genetic liability to anxiety disorders was not associated with an increased risk of asthma (P > 0.01), nor was genetic liability to asthma associated with an increased risk of anxiety disorders (P > 0.01). Furthermore, no significant genetic causal relationships were observed for other studied traits. Multivariate MR, after adjusting for body mass index and alcohol consumption, further corroborated the independent causal effect of genetic predisposition to MDD on the risk of asthma (OR = 1.460, 95% CI: 1.285-1.660). Conclusion Our study establishes MDD as a predisposing factor for asthma. Meanwhile, anxiety disorders are not causal risk factors for asthma, nor is the reverse true. It is recommended to closely monitor asthma symptoms in patients with MDD.
Collapse
Affiliation(s)
- Zian Yan
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Jingjing Chen
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Lijun Guo
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hongwei Zhang
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yanqiu Ding
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Gaocan Ren
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yiyi Mao
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Ruina Bai
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaochang Ma
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| |
Collapse
|
3
|
Scadding GK, McDonald M, Backer V, Scadding G, Bernal-Sprekelsen M, Conti DM, De Corso E, Diamant Z, Gray C, Hopkins C, Jesenak M, Johansen P, Kappen J, Mullol J, Price D, Quirce S, Reitsma S, Salmi S, Senior B, Thyssen JP, Wahn U, Hellings PW. Pre-asthma: a useful concept for prevention and disease-modification? A EUFOREA paper. Part 1-allergic asthma. FRONTIERS IN ALLERGY 2024; 4:1291185. [PMID: 38352244 PMCID: PMC10863454 DOI: 10.3389/falgy.2023.1291185] [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: 09/11/2023] [Accepted: 12/26/2023] [Indexed: 02/16/2024] Open
Abstract
Asthma, which affects some 300 million people worldwide and caused 455,000 deaths in 2019, is a significant burden to suffers and to society. It is the most common chronic disease in children and represents one of the major causes for years lived with disability. Significant efforts are made by organizations such as WHO in improving the diagnosis, treatment and monitoring of asthma. However asthma prevention has been less studied. Currently there is a concept of pre- diabetes which allows a reduction in full blown diabetes if diet and exercise are undertaken. Similar predictive states are found in Alzheimer's and Parkinson's diseases. In this paper we explore the possibilities for asthma prevention, both at population level and also investigate the possibility of defining a state of pre-asthma, in which intensive treatment could reduce progression to asthma. Since asthma is a heterogeneous condition, this paper is concerned with allergic asthma. A subsequent one will deal with late onset eosinophilic asthma.
Collapse
Affiliation(s)
- G. K. Scadding
- Department of Allergy & Rhinology, Royal National ENT Hospital, London, United Kingdom
- Division of Immunity and Infection, University College, London, United Kingdom
| | - M. McDonald
- The Allergy Clinic, Blairgowrie, Randburg, South Africa
| | - V. Backer
- Department of Otorhinolaryngology, Head & Neck Surgery, and Audiology, Rigshospitalet, Copenhagen University, Copenhagen, Denmark
| | - G. Scadding
- Allergy, Royal Brompton Hospital, London, United Kingdom
| | - M. Bernal-Sprekelsen
- Head of ORL-Deptartment, Clinic Barcelona, Barcelona, Spain
- Chair of ORL, University of Barcelona, Barcelona, Spain
| | - D. M. Conti
- The European Forum for Research and Education in Allergy and Airway Diseases Scientific Expert Team Members, Brussels, Belgium
| | - E. De Corso
- Otolaryngology Head and Neck Surgery, A. Gemelli University Hospital Foundation IRCCS, Rome, Italy
| | - Z. Diamant
- Department of Respiratory Medicine & Allergology, Institute for Clinical Science, Skane University Hospital, Lund University, Lund, Sweden
- Department of Respiratory Medicine, First Faculty of Medicine, Charles University and Thomayer Hospital, Prague, Czech Republic
- Department Clinical Pharmacy and Pharmacology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
- Deptarment of Microbiology Immunology & Transplantation, KU Leuven, Catholic University of Leuven, Leuven, Belgium
| | - C. Gray
- Paediatric Allergist, Red Cross Children’s Hospital and University of Cape Town, Cape Town, South Africa
- Kidsallergy Centre, Cape Town, South Africa
| | - C. Hopkins
- Department of Rhinology and Skull Base Surgery, Guy’s and St Thomas’ Hospital NHS Foundation Trust, London, United Kingdom
| | - M. Jesenak
- Department of Clinical Immunology and Allergology, University Teaching Hospital in Martin, Martin, Slovakia
- Department of Paediatrics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, University Teaching Hospital in Martin, Martin, Slovakia
- Department of Pulmonology and Phthisiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, University Teaching Hospital in Martin, Martin, Slovakia
| | - P. Johansen
- Department of Dermatology, University of Zurich, Zurich, Switzerland
- Department of Dermatology, University Hospital of Zurich, Zurich, Switzerland
| | - J. Kappen
- Department of Pulmonology, STZ Centre of Excellence for Asthma, COPD and Respiratory Allergy, Franciscus Gasthuis & Vlietland, Rotterdam, Netherlands
| | - J. Mullol
- Rhinology Unit and Smell Clinic, ENT Department, Hospital Clínic, FRCB-IDIBAPS, Universitat de Barcelona, CIBERES, Barcelona, Spain
| | - D. Price
- Observational and Pragmatic Research Institute, Singapore, Singapore
- Division of Applied Health Sciences, Centre of Academic Primary Care, University of Aberdeen, Aberdeen, United Kingdom
| | - S. Quirce
- Department of Allergy, La Paz University Hospital, IdiPAZ, Madrid, Spain
| | - S. Reitsma
- Department of Otorhinolarynogology and Head/Neck Surgery, Amsterdam University Medical Centres, Location AMC, University of Amsterdam, Amsterdam, Netherlands
| | - S. Salmi
- Department of Otorhinolaryngology, Kuopio University Hospital and University of Eastern Finland, Kuopio, Finland
- Department of Allergy, Inflammation Center, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - B. Senior
- Department of Otolaryngology/Head and Neck Surgery, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - J. P. Thyssen
- Department of Dermatology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - U. Wahn
- Former Head of the Department for Pediatric Pneumology and Immunology, Charite University Medicine, Berlin, Germany
| | - P. W. Hellings
- Department of Otorhinolaryngology-Head and Neck Surgery, University Hospitals, Leuven, Belgium
- Laboratory of Allergy and Clinical Immunology, University Hospitals Leuven, Leuven, Belgium
- Upper Airways Research Laboratory, Department of Head and Skin, Ghent University, Ghent, Belgium
| |
Collapse
|
4
|
Nilausen KF, Landt EM, Al-Shuweli S, Nordestgaard BG, Bødtger U, Dahl M. Venous thromboembolism associated with severe dyspnoea and asthma in 102 792 adults. ERJ Open Res 2023; 9:00631-2023. [PMID: 38020573 PMCID: PMC10658631 DOI: 10.1183/23120541.00631-2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 09/20/2023] [Indexed: 12/01/2023] Open
Abstract
Background The most recent guideline on acute pulmonary embolism (PE) indicates possible long-term sequelae such as dyspnoea and chronic thromboembolic pulmonary hypertension after a PE event. However, effects on lung function or asthma risk have not been evaluated in the general population. Methods We tested whether individuals with a venous thromboembolism (VTE) encompassing PE and deep vein thrombosis (DVT) have reduced lung function, or greater risks of dyspnoea and asthma using data from 102 792 adults from the Copenhagen General Population Study. Diagnoses of PE, DVT and asthma were collected from the national Danish Patient Registry. Factor V Leiden and prothrombin G20210A gene variants were determined using TaqMan assays. Results Prevalences of PE, DVT and VTE were 2.2%, 3.6% and 5.2%, respectively. Individuals with VTE had forced expiratory volume in 1 s of 92% predicted compared with 96% pred in individuals without VTE (p<0.001). Individuals with VTE versus those without had adjusted OR (95% CI) for light, moderate and severe dyspnoea of 1.4 (1.2-1.6), 1.6 (1.4-1.8) and 1.7 (1.5-1.9), respectively. Individuals with VTE versus those without had an adjusted OR for asthma of 1.6 (95% CI 1.4-1.8). Factor V Leiden and prothrombin G20210A genotype also associated with increased risk of asthma (p for trend=0.002). Population-attributable fractions of severe dyspnoea and asthma due to VTE were 3.5% and 3.0%, respectively, in the population. Conclusion Individuals with VTE have worse lung function and higher risks of severe dyspnoea and asthma, and may account for 3.5% and 3.0% of people with severe dyspnoea and asthma, respectively, in the general population.
Collapse
Affiliation(s)
| | - Eskild Morten Landt
- Department of Clinical Biochemistry, Zealand University Hospital, Køge, Denmark
| | - Suzan Al-Shuweli
- Department of Clinical Biochemistry, Zealand University Hospital, Køge, Denmark
| | - Børge G. Nordestgaard
- Department of Clinical Biochemistry, Herlev–Gentofte Hospital, Herlev, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Uffe Bødtger
- Department of Respiratory Medicine, Zealand University Hospital Næstved, Næstved, Denmark
- Institute of Region Health Research, University of Southern Denmark, Odense, Denmark
| | - Morten Dahl
- Department of Clinical Biochemistry, Zealand University Hospital, Køge, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| |
Collapse
|
5
|
Li X, Zhu J, Zhao W, Zhu Y, Zhu L, Shi R, Wang Z, Pan H, Wang D. The Causal Effect of Obesity on the Risk of 15 Autoimmune Diseases: A Mendelian Randomization Study. Obes Facts 2023; 16:598-605. [PMID: 37827145 PMCID: PMC10697740 DOI: 10.1159/000534468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 10/03/2023] [Indexed: 10/14/2023] Open
Abstract
INTRODUCTION Observational studies have shown that obesity is a risk factor for various autoimmune diseases. However, the causal relationship between obesity and autoimmune diseases is unclear. Mendelian randomization (MR) was used to investigate the causal effects of obesity on 15 autoimmune diseases. METHODS MR analysis employed instrumental variables, specifically single-nucleotide polymorphisms associated with obesity measures such as body mass index (BMI), waist circumference, hip circumference, and waist-to-hip ratio. The study utilized UK Biobank and FinnGen data to estimate the causal relationship between obesity and autoimmune diseases. RESULTS Genetically predicted BMI was associated with risk for five autoimmune diseases. The odds ratio per 1-SD increase in genetically predicted BMI, the OR was 1.28 (95% CI, 1.18-1.09; p < 0.001) for asthma, 1.37 (95% CI, 1.24-1.51; p < 0.001) for hypothyroidism, 1.52 (95% CI, 1.27-1.83; p < 0.001) for psoriasis, 1.22 (95% CI, 1.06-1.40; p = 0.005) for rheumatoid arthritis, and 1.55 (95% CI, 1.32-1.83; p < 0.001) for type 1 diabetes. However, after adjusting for genetic susceptibility to drinking and smoking, the correlation between BMI and rheumatoid arthritis was not statistically significant. Genetically predicted waist circumference, hip circumference, and waist and hip circumference were associated with 6, 6, and 1 autoimmune disease, respectively. CONCLUSION This study suggests that obesity may be associated with an increased risk of several autoimmune diseases, such as asthma, hypothyroidism, psoriasis, rheumatoid arthritis, and type 1 diabetes.
Collapse
Affiliation(s)
- Xunliang Li
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China,
| | - Jie Zhu
- Department of Infectious Disease, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wenman Zhao
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yuyu Zhu
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Li Zhu
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Rui Shi
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zhijuan Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Haifeng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China
| | - Deguang Wang
- Department of Nephrology, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| |
Collapse
|
6
|
Holtjer JCS, Bloemsma LD, Beijers RJHCG, Cornelissen MEB, Hilvering B, Houweling L, Vermeulen RCH, Downward GS, Maitland-Van der Zee AH. Identifying risk factors for COPD and adult-onset asthma: an umbrella review. Eur Respir Rev 2023; 32:32/168/230009. [PMID: 37137510 PMCID: PMC10155046 DOI: 10.1183/16000617.0009-2023] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/27/2023] [Indexed: 05/05/2023] Open
Abstract
BACKGROUND COPD and adult-onset asthma (AOA) are the most common noncommunicable respiratory diseases. To improve early identification and prevention, an overview of risk factors is needed. We therefore aimed to systematically summarise the nongenetic (exposome) risk factors for AOA and COPD. Additionally, we aimed to compare the risk factors for COPD and AOA. METHODS In this umbrella review, we searched PubMed for articles from inception until 1 February 2023 and screened the references of relevant articles. We included systematic reviews and meta-analyses of observational epidemiological studies in humans that assessed a minimum of one lifestyle or environmental risk factor for AOA or COPD. RESULTS In total, 75 reviews were included, of which 45 focused on risk factors for COPD, 28 on AOA and two examined both. For asthma, 43 different risk factors were identified while 45 were identified for COPD. For AOA, smoking, a high body mass index (BMI), wood dust exposure and residential chemical exposures, such as formaldehyde exposure or exposure to volatile organic compounds, were amongst the risk factors found. For COPD, smoking, ambient air pollution including nitrogen dioxide, a low BMI, indoor biomass burning, childhood asthma, occupational dust exposure and diet were amongst the risk factors found. CONCLUSIONS Many different factors for COPD and asthma have been found, highlighting the differences and similarities. The results of this systematic review can be used to target and identify people at high risk for COPD or AOA.
Collapse
Affiliation(s)
- Judith C S Holtjer
- Department of Environmental Epidemiology, Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
| | - Lizan D Bloemsma
- Department of Pulmonary Medicine, Amsterdam UMC, Amsterdam, The Netherlands
- Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
- Amsterdam Public Health, Amsterdam, The Netherlands
| | - Rosanne J H C G Beijers
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Merel E B Cornelissen
- Department of Pulmonary Medicine, Amsterdam UMC, Amsterdam, The Netherlands
- Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
- Amsterdam Public Health, Amsterdam, The Netherlands
| | - Bart Hilvering
- Department of Pulmonary Medicine, Amsterdam UMC, Amsterdam, The Netherlands
| | - Laura Houweling
- Department of Environmental Epidemiology, Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
- Department of Pulmonary Medicine, Amsterdam UMC, Amsterdam, The Netherlands
| | - Roel C H Vermeulen
- Department of Environmental Epidemiology, Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - George S Downward
- Department of Environmental Epidemiology, Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, The Netherlands
- Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Anke-Hilse Maitland-Van der Zee
- Department of Pulmonary Medicine, Amsterdam UMC, Amsterdam, The Netherlands
- Amsterdam Institute for Infection and Immunity, Amsterdam, The Netherlands
- Amsterdam Public Health, Amsterdam, The Netherlands
| |
Collapse
|
7
|
Yang W, Yang Y, He L, Zhang M, Sun S, Wang F, Han B. Dietary factors and risk for asthma: A Mendelian randomization analysis. Front Immunol 2023; 14:1126457. [PMID: 36911739 PMCID: PMC9992976 DOI: 10.3389/fimmu.2023.1126457] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 02/09/2023] [Indexed: 02/25/2023] Open
Abstract
Background Previous research has found a link between dietary factors and asthma. However, few studies have analyzed the relationship between dietary factors and asthma using Mendelian randomization. Methods: The IEU Open GWAS project (https://gwas.mrcieu.ac.uk/) was the source of exposure and outcome datasets. The exposure datasets included Alcoholic drinks per week, Alcohol intake frequency, Processed meat intake, Poultry intake, Beef intake, Non-oily fish intake, Oily fish intake, Pork intake, Lamb/mutton intake, Bread intake, Cheese intake, Cooked vegetable intake, Tea intake, Fresh fruit intake, Cereal intake, Salad/raw vegetable intake, Coffee intake, and Dried fruit intake. The weighted median, MR-Egger, and Inverse Variance Weighted methods were used as the main methods of Mendelian randomization analysis. Heterogeneity and pleiotropic analysis were performed to ensure the accuracy of the results. Results Alcohol intake frequency (after removing outliers OR: 1.217; 95% CI: 1.048-1.413; p=0.00993) was related to an increased risk of Asthma. Fresh fruit intake (OR: 0.489; 95% CI: 0.320-0.748; p=0.000954) and Dried fruit intake (after removing outliers OR: 0.482; 95% CI: 0.325-0.717; p= 0.000312) were discovered as protective factors. Other dietary intakes found no causal relationship with asthma. Conclusion This study found that dried fruit intake and fresh fruit intake were associated with a reduced risk of asthma, and alcohol intake frequency was associated with an increased risk of asthma. This study also found that other factors included in this study were not associated with asthma.
Collapse
Affiliation(s)
- Wenwen Yang
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Yanjiang Yang
- Qilu hospital of Shandong University, Shandong University, Jinan, Shandong, China
| | - Li He
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Min Zhang
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Shuo Sun
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Feng Wang
- The First Clinical Medical College, Lanzhou University, Lanzhou, Gansu, China
| | - Biao Han
- Department of Thoracic Surgery, the First Hospital of Lanzhou University, Lanzhou, Gansu, China.,Gansu Province International Cooperation Base for Research and Application of Key Technology of Thoracic Surgery, The First Hospital of Lanzhou University, Lanzhou, Gansu, China
| |
Collapse
|