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Tao HW, Liu ZY, Jiang W, Miao MY, Lyu JQ, Zhao M, Zhu J, Chen JS, Du HZ, Li ZN, Zhu Z, Yang J, Qin LQ, Chen W, Chen GC. Lower plasma linoleic acids as a risk factor for gout: an integrated analysis of population-based cohort and genetic data. Food Funct 2024; 15:7567-7576. [PMID: 38934729 DOI: 10.1039/d4fo00987h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Background: Gout is a nutrition-related, highly prevalent inflammatory arthritis with undesirable effects on the quality of life. The relationships between circulating fatty acids (FAs) and gout remain poorly understood. Method: We included 268 174 participants with plasma FAs measured using nuclear magnetic resonance at the baseline (2006-2010) from the UK Biobank, of which 15 194 participants had repeated measures of FAs between 2012 and 2013. Cox proportional hazards models were used to assess the association of the baseline and longitudinal changes in relative levels of plasma FAs (% total FAs) with incident gout. Mendelian randomization (MR) analyses were conducted to assess the potential causality of the examined association. Results: Over a median follow-up of 12.8 years, 5160 incident cases of gout occurred. Baseline polyunsaturated fatty acids (PUFAs), n-6 PUFAs, and linoleic acids (LAs) were inversely associated with incident gout (all P-trend values < 0.0001). Baseline monounsaturated fatty acids (MUFAs), n-3 PUFAs, and docosahexaenoic acids (DHAs) were positively associated with incident gout (all P-trend values < 0.0001). Longitudinal increments of n-6 PUFAs and LAs were associated with a lower risk of subsequent gout, whereas an increment of n-3 PUFAs was associated with a higher risk. In two-sample MR analyses, genetically determined higher levels of PUFAs, n-6 PUFAs, and LAs were associated with a decreased risk of gout (all P values < 0.05). Conclusions: Our findings consistently indicate a causal relationship of elevated levels of n-6 PUFAs, especially LAs, with a reduced risk of gout.
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Affiliation(s)
- Hao-Wei Tao
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Zhong-Yue Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Wei Jiang
- Department of Hepatopancreatobiliary Surgery, Ningbo Medical Center Lihuili Hospital, Ningbo University, Ningbo, China
| | - Meng-Yuan Miao
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Jie-Qiong Lyu
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Miao Zhao
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Jie Zhu
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Jin-Si Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Hong-Zhen Du
- Department of Nutrition, The First Hospital of Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Nutrition and Health, Shijiazhuang, China
| | - Zeng-Ning Li
- Department of Nutrition, The First Hospital of Hebei Medical University, Shijiazhuang, China
- Hebei Key Laboratory of Nutrition and Health, Shijiazhuang, China
| | - Zhengbao Zhu
- Department of Epidemiology, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Diseases, Suzhou Medical College of Soochow University, Suzhou, China
| | - Jing Yang
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
- Department of Clinical Nutrition, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Li-Qiang Qin
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
| | - Wei Chen
- Department of Clinical Nutrition, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Guo-Chong Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Jiangsu Key Laboratory of Preventive and Translational Medicine for Major Chronic Non-communicable Diseases, MOE Key Laboratory of Geriatric Diseases and Immunology, Suzhou Medical College of Soochow University, Suzhou, China.
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Qin ZM, Liang SQ, Long JX, Deng JM, Wei X, Yang ML, Tang SJ, Li HL. Importance of GWAS Risk Loci and Clinical Data in Predicting Asthma Using Machine-learning Approaches. Comb Chem High Throughput Screen 2024; 27:400-407. [PMID: 37278039 DOI: 10.2174/1386207326666230602161939] [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] [Received: 08/19/2022] [Revised: 04/17/2023] [Accepted: 05/04/2023] [Indexed: 06/07/2023]
Abstract
INTRODUCTION To understand the risk factors of asthma, we combined genome-wide association study (GWAS) risk loci and clinical data in predicting asthma using machine-learning approaches. METHODS A case-control study with 123 asthmatics and 100 controls was conducted in the Zhuang population in Guangxi. GWAS risk loci were detected using polymerase chain reaction, and clinical data were collected. Machine-learning approaches were used to identify the major factors that contribute to asthma. RESULTS A total of 14 GWAS risk loci with clinical data were analyzed on the basis of 10 times the 10-fold cross-validation for all machine-learning models. Using GWAS risk loci or clinical data, the best performances exhibited area under the curve (AUC) values of 64.3% and 71.4%, respectively. Combining GWAS risk loci and clinical data, the XGBoost established the best model with an AUC of 79.7%, indicating that the combination of genetics and clinical data can enable improved performance. We then sorted the importance of features and found the top six risk factors for predicting asthma to be rs3117098, rs7775228, family history, rs2305480, rs4833095, and body mass index. CONCLUSION Asthma-prediction models based on GWAS risk loci and clinical data can accurately predict asthma, and thus provide insights into the disease pathogenesis.
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Affiliation(s)
- Zan-Mei Qin
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Si-Qiao Liang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Jian-Xiong Long
- Department of Epidemiology and Health Statistics, School of Public Health of Guangxi Medical University, Nanning, Guangxi, China
| | - Jing-Min Deng
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xuan Wei
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Mei-Ling Yang
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Shao-Jie Tang
- School of Automation, Xi'an University of Posts and Telecommunications, Xi'an, Shanxi, 710121, China
- Xi'an Key Laboratory of Advanced Controlling and Intelligent Processing (ACIP), Xi'an, Shanxi, 710121, China
| | - Hai-Li Li
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
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Huang T, Long Y, Ou Y, Li J, Huang Y, Gao J. Association between circulating fatty acid metabolites and asthma risk: a two-sample bidirectional Mendelian randomization study. BMC Med Genomics 2023; 16:112. [PMID: 37221513 DOI: 10.1186/s12920-023-01545-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 05/13/2023] [Indexed: 05/25/2023] Open
Abstract
BACKGROUND Fatty acids are involved in a wide range of immunological responses in humans. Supplementation of polyunsaturated fatty acids has been reported to help alleviate symptoms and airway inflammation in asthma patients, whereas the effects of fatty acids on the actual risk of asthma remain controversial. This study comprehensively investigated the causal effects of serum fatty acids on asthma risk using two-sample bidirectional Mendelian Randomization (MR) analysis. METHODS Genetic variants strongly associated with 123 circulating fatty acid metabolites were extracted as instrumental variables, and a large GWAS data of asthma was used to test effects of the metabolites on this outcome. The inverse-variance weighted method was used for primary MR analysis. The weighted median, MR-Egger regression, MR-PRESSO, and leave-one-out analyses were utilized to evaluate heterogeneity and pleiotropy. Potential confounders were adjusted by performing multivariable MR analyses. Reverse MR analysis was also conducted to estimate the causal effect of asthma on candidate fatty acid metabolites. Further, we performed colocalization analysis to examine the pleiotropy of variants within the fatty acid desaturase 1 (FADS1) locus between the significant metabolite traits and the risk of asthma. Cis-eQTL-MR and colocalization analysis were also performed to determine the association between RNA expression of FADS1 and asthma. RESULTS Genetically instrumented higher average number of methylene groups was causally associated with a lower risk of asthma in primary MR analysis, while inversely, the higher ratio of bis-allylic groups to double bonds and the higher ratio of bis-allylic groups to total fatty acids, were associated with higher probabilities of asthma. Consistent results were obtained in multivariable MR when adjusted for potential confounders. However, these effects were completely eliminated after SNPs correlated with the FADS1 gene were excluded. The reverse MR also found no causal association. The colocalization analysis suggested that the three candidate metabolite traits and asthma likely share causal variants within the FADS1 locus. In addition, the cis-eQTL-MR and colocalization analyses demonstrated a causal association and shared causal variants between FADS1 expression and asthma. CONCLUSIONS Our study supports a negative association between several PUFA traits and the risk of asthma. However, this association is largely attributed to the influence of FADS1 polymorphisms. The results of this MR study should be carefully interpreted given the pleiotropy of SNPs associated with FADS1.
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Affiliation(s)
- Tingting Huang
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yichen Long
- Department of Epidemiology, School of Public Health, Southeast University, Jiangsu, Nanjing, China
| | - Yang Ou
- Center for Tumor Diagnosis and Therapy, Jinshan Hospital, Fudan University, Shanghai, China
| | - Jia Li
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yilin Huang
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jinming Gao
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Beijing, China.
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Weber R, Streckenbach B, Welti L, Inci D, Kohler M, Perkins N, Zenobi R, Micic S, Moeller A. Online breath analysis with SESI/HRMS for metabolic signatures in children with allergic asthma. Front Mol Biosci 2023; 10:1154536. [PMID: 37065443 PMCID: PMC10102578 DOI: 10.3389/fmolb.2023.1154536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 03/16/2023] [Indexed: 04/03/2023] Open
Abstract
Introduction: There is a need to improve the diagnosis and management of pediatric asthma. Breath analysis aims to address this by non-invasively assessing altered metabolism and disease-associated processes. Our goal was to identify exhaled metabolic signatures that distinguish children with allergic asthma from healthy controls using secondary electrospray ionization high-resolution mass spectrometry (SESI/HRMS) in a cross-sectional observational study.Methods: Breath analysis was performed with SESI/HRMS. Significant differentially expressed mass-to-charge features in breath were extracted using the empirical Bayes moderated t-statistics test. Corresponding molecules were putatively annotated by tandem mass spectrometry database matching and pathway analysis.Results: 48 allergic asthmatics and 56 healthy controls were included in the study. Among 375 significant mass-to-charge features, 134 were putatively identified. Many of these could be grouped to metabolites of common pathways or chemical families. We found several pathways that are well-represented by the significant metabolites, for example, lysine degradation elevated and two arginine pathways downregulated in the asthmatic group. Assessing the ability of breath profiles to classify samples as asthmatic or healthy with supervised machine learning in a 10 times repeated 10-fold cross-validation revealed an area under the receiver operating characteristic curve of 0.83.Discussion: For the first time, a large number of breath-derived metabolites that discriminate children with allergic asthma from healthy controls were identified by online breath analysis. Many are linked to well-described metabolic pathways and chemical families involved in pathophysiological processes of asthma. Furthermore, a subset of these volatile organic compounds showed high potential for clinical diagnostic applications.
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Affiliation(s)
- Ronja Weber
- Department of Respiratory Medicine, University Children's Hospital Zurich, Zurich, Switzerland
| | - Bettina Streckenbach
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Lara Welti
- Department of Respiratory Medicine, University Children's Hospital Zurich, Zurich, Switzerland
| | - Demet Inci
- Department of Respiratory Medicine, University Children's Hospital Zurich, Zurich, Switzerland
| | - Malcolm Kohler
- Department of Pulmonology, University Hospital Zurich, Zurich, Switzerland
| | - Nathan Perkins
- Division of Clinical Chemistry and Biochemistry, University Children's Hospital Zurich, Zurich, Switzerland
| | - Renato Zenobi
- Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, Switzerland
| | - Srdjan Micic
- Department of Respiratory Medicine, University Children's Hospital Zurich, Zurich, Switzerland
| | - Alexander Moeller
- Department of Respiratory Medicine, University Children's Hospital Zurich, Zurich, Switzerland
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Lin Z, Huang J, Xie S, Zheng Z, Tang K, Li S, Chen R. The Association Between Insulin Use and Asthma: An Epidemiological Observational Analysis and Mendelian Randomization Study. Lung 2023; 201:189-199. [PMID: 36971839 DOI: 10.1007/s00408-023-00611-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/09/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND Asthma is a common respiratory disease caused by genetic and environmental factors, but the contribution of insulin use to the risk of asthma remains unclear. This study aimed to investigate the association between insulin use and asthma in a large population-based cohort, and further explore their causal relationship by Mendelian randomization (MR) analysis. METHODS An epidemiological study including 85,887 participants from the National Health and Nutrition Examination Survey (NHANES) 2001-2018 was performed to evaluate the association between insulin use and asthma. Based on the inverse-variance weighted approach, MR analysis were conducted to estimate the causal effect of insulin use on asthma from the UKB and FinnGen datasets, respectively. RESULTS In the NHANES cohort, we found that insulin use was associated with an increased risk of asthma [odd ratio (OR) 1.38; 95% CI 1.16-1.64; p < 0.001]. For the MR analysis, we found a causal relationship between insulin use and a higher risk of asthma in both Finn (OR 1.10; p < 0.001) and UK Biobank cohorts (OR 1.18; p < 0.001). Meanwhile, there was no causal association between diabetes and asthma. After multivariable adjustment for diabetes in UKB cohort, the insulin use remained significantly associated with an increased risk of asthma (OR 1.17, p < 0.001). CONCLUSIONS An association between insulin use and an increased risk of asthma was found via the real-world data from the NHANES. In addition, the current study identified a causal effect and provided a genetic evidence of insulin use and asthma. More studies are needed to elucidate the mechanisms underlying the association between insulin use and asthma.
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Affiliation(s)
- Zikai Lin
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- Nanshan School of Medical, Guangzhou Medical University, Guangzhou, China
| | - Junfeng Huang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
| | - Shuojia Xie
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- Nanshan School of Medical, Guangzhou Medical University, Guangzhou, China
| | - Ziwen Zheng
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
| | - Kailun Tang
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China
- Department of Allergy and Clinical Immunology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
- Clinical Medical College of Henan University, Kaifeng, China
| | - Shiyue Li
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China.
| | - Ruchong Chen
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, Guangdong, China.
- Department of Allergy and Clinical Immunology, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
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Buckner T, Johnson RK, Vanderlinden LA, Carry PM, Romero A, Onengut-Gumuscu S, Chen WM, Fiehn O, Frohnert BI, Crume T, Perng W, Kechris K, Rewers M, Norris JM. An Oxylipin-Related Nutrient Pattern and Risk of Type 1 Diabetes in the Diabetes Autoimmunity Study in the Young (DAISY). Nutrients 2023; 15:945. [PMID: 36839302 PMCID: PMC9962656 DOI: 10.3390/nu15040945] [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: 01/13/2023] [Revised: 02/06/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
Oxylipins, pro-inflammatory and pro-resolving lipid mediators, are associated with the risk of type 1 diabetes (T1D) and may be influenced by diet. This study aimed to develop a nutrient pattern related to oxylipin profiles and test their associations with the risk of T1D among youth. The nutrient patterns were developed with a reduced rank regression in a nested case-control study (n = 335) within the Diabetes Autoimmunity Study in the Young (DAISY), a longitudinal cohort of children at risk of T1D. The oxylipin profiles (adjusted for genetic predictors) were the response variables. The nutrient patterns were tested in the case-control study (n = 69 T1D cases, 69 controls), then validated in the DAISY cohort using a joint Cox proportional hazards model (n = 1933, including 81 T1D cases). The first nutrient pattern (NP1) was characterized by low beta cryptoxanthin, flavanone, vitamin C, total sugars and iron, and high lycopene, anthocyanidins, linoleic acid and sodium. After adjusting for T1D family history, the HLA genotype, sex and race/ethnicity, NP1 was associated with a lower risk of T1D in the nested case-control study (OR: 0.44, p = 0.0126). NP1 was not associated with the risk of T1D (HR: 0.54, p-value = 0.1829) in the full DAISY cohort. Future studies are needed to confirm the nested case-control findings and investigate the modifiable factors for oxylipins.
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Affiliation(s)
- Teresa Buckner
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Kinesiology, Nutrition, and Dietetics, University of Northern Colorado, Greeley, CO 80639, USA
| | - Randi K. Johnson
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Biomedical Informatics, CU School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Lauren A. Vanderlinden
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Patrick M. Carry
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
- Colorado Program for Musculoskeletal Research, Department of Orthopedics, CU School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Alex Romero
- Department of Biomedical Informatics, CU School of Medicine, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Suna Onengut-Gumuscu
- Health Center for Public Health Genomics, University of Virginia, Charlottesville, VA 22903, USA
| | - Wei-Min Chen
- Health Center for Public Health Genomics, University of Virginia, Charlottesville, VA 22903, USA
| | - Oliver Fiehn
- NIH-West Coast Metabolomics Center, University of California-Davis, Davis, CA 95616, USA
| | - Brigitte I. Frohnert
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Tessa Crume
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Wei Perng
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Katerina Kechris
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Marian Rewers
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Jill M. Norris
- Department of Epidemiology, Colorado School of Public Health, CU Anschutz, Anschutz Medical Campus, Aurora, CO 80045, USA
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Shu Q, Zhao C, Yu J, Liu Y, Hu S, Meng J, Zhang J. Causal analysis of serum polyunsaturated fatty acids with juvenile idiopathic arthritis and ocular comorbidity. Eur J Clin Nutr 2023; 77:75-81. [PMID: 35974138 DOI: 10.1038/s41430-022-01196-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 08/02/2022] [Accepted: 08/03/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND & OBJECTIVE To investigate the causal effects of plasma Polyunsaturated fatty acids (PUFAs) on the risk of juvenile idiopathic arthritis (JIA) and ocular comorbidity through Mendelian randomization (MR) analysis. METHODS Genetic variants (formerly single nucleotide polymorphisms, SNPs) that are strongly associated with PUFAs levels (P < 5×10-8) were selected as instrumental variables. Summary-level MR was performed with outcome estimates for JIA (n = 31,142) and JIA associated iridocyclitis (n = 94,197). The inverse variance-weighted (IVW) method was employed as the main approach to combine the estimation for each SNP. Two set of models with summary statistics were conducted and multiple sensitivity analyses were applied for testing of pleiotropic bias. RESULTS In model 1, genetically predicted n-6 PUFAs linoleic acid (LA) and arachidonic acid (AA) were associated with lower and higher risk of JIA associated iridocyclitis using IVW (ORLA = 0.940, 95% CI: 0.895-0.988, P = 0.015; ORAA = 1.053, 95% CI: 1.007-1.101, P = 0.024). No such association was observed between each plasma PUFAs and JIA susceptibility (P > 0.05). In further MR analysis, results from model 2 also showed a consistent trend. Besides, multiple sensitivity analyses revealed that there was no obvious evidence for unknown pleiotropy (P > 0.05). CONCLUSIONS Our MR study provides genetic evidence on the possible causality that plasma LA level might protect against JIA associated iridocyclitis, whereas AA was responsible for opposite effect.
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Affiliation(s)
- Qinxin Shu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Chenyang Zhao
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Jing Yu
- Department of Geriatrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P. R. China
| | - Yusen Liu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Shuqiong Hu
- Wuhan Aier Eye Hospital of Wuhan University, Wuhan, Hubei Province, P. R. China
| | - Jiayu Meng
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China
- Chongqing Eye Institute, Chongqing, China
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China
| | - Jun Zhang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.
- Chongqing Key Laboratory of Ophthalmology, Chongqing, China.
- Chongqing Eye Institute, Chongqing, China.
- Chongqing Branch of National Clinical Research Center for Ocular Diseases, Chongqing, China.
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Mikkelsen H, Landt EM, Benn M, Nordestgaard BG, Dahl M. Causal risk factors for asthma in Mendelian randomization studies: A systematic review and meta-analysis. Clin Transl Allergy 2022; 12:e12207. [PMID: 36434743 PMCID: PMC9640961 DOI: 10.1002/clt2.12207] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 05/23/2022] [Accepted: 10/13/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Several risk factors for asthma have been proposed; however, the causality of these associations is sometimes unclear. Mendelian randomization is a powerful epidemiological approach that can help elucidate the causality of risk factors. The aim of the present study was to identify causal risk factors for asthma through Mendelian Randomization studies. METHODS A systematic search of PubMed and EMBASE was conducted, to identify studies investigating risk factors for asthma or respiratory allergies through Mendelian Randomization. When two or more studies investigated the same risk factor a meta-analysis was conducted. Of 239 studies initially identified, 41 were included. RESULTS A causal association between adiposity and adult asthma risk was found in 10 out of 12 studies with a summary risk ratio of 1.05 per kg/m2 increase in BMI (95% CI: 1.03-1.07). Puberty timing (n = 3), alcohol (n = 2), and linoleic acid (n = 1) had causal effects on asthma risk, while vitamins/minerals (n = 6) showed no consistent effect on asthma. The effect of smoking on adult asthma conflicted between studies. Several of the significant associations of asthma with immune related proteins (n = 5) and depression (n = 2) investigated through multiple traits analyses could generally benefit from replications in independent datasets. CONCLUSION This systematic review and meta-analysis found evidence for causal effects of adiposity, puberty timing, linoleic acid, alcohol, immune related proteins, and depression on risk of asthma.
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Affiliation(s)
- Heidi Mikkelsen
- Department of Clinical BiochemistryZealand University HospitalKøgeDenmark,Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Eskild Morten Landt
- Department of Clinical BiochemistryZealand University HospitalKøgeDenmark,Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
| | - Marianne Benn
- Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark,Department of Clinical BiochemistryRigshospitaletCopenhagen University HospitalCopenhagenDenmark
| | - Børge Grønne Nordestgaard
- Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark,Department of Clinical BiochemistryHerlev and Gentofte HospitalCopenhagen University HospitalHerlevDenmark
| | - Morten Dahl
- Department of Clinical BiochemistryZealand University HospitalKøgeDenmark,Department of Clinical Medicine, Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark
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9
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Wang J, Huang Y, Yang H, Lin Z, Campos AI, Rentería ME, Xu L. Plasma polyunsaturated fatty acid concentrations and sleep apnea risk: A two-sample Mendelian randomization study. Front Nutr 2022; 9:956900. [PMID: 36061896 PMCID: PMC9433775 DOI: 10.3389/fnut.2022.956900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/25/2022] [Indexed: 11/13/2022] Open
Abstract
Background Previous observational studies have found that lower levels of circulating polyunsaturated fatty acids (PUFAs) were associated with a higher risk of sleep apnea (SA). However, the causality of the association remains unclear. Materials and methods We used the two-sample Mendelian randomization (MR) study to assess the causal association of omega-3 and omega-6 fatty acids with SA. Single-nucleotide polymorphisms (SNPs) predicting the plasma level of PUFAs at the suggestive genome-wide significance level (p < 5 × 10–6) were selected as instrumental variables (IVs) from the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) (n = ∼8,000) Consortium. For outcomes, the summary-level statistics of SA were obtained from the latest genome-wide association study (GWAS), which combined five cohorts with a total number of 25,008 SA cases and 172,050 snoring cases (total = 523,366). Results We found no association of α-linolenic acid (ALA) [odds ratio (OR) = 1.09 per% changed, 95% confidence interval (CI) 0.67–1.78], eicosapentaenoic acid (EPA) (OR = 0.94, 95% CI 0.88–1.01), docosapentaenoic acid (DPA) (OR = 0.95, 95% CI 0.88–1.02), and docosahexaenoic acid (DHA) (OR = 0.99, 95% CI 0.96–1.02) with the risk of SA using inverse-variance weighted (IVW) method. Moreover, for omega-6 PUFAs, no association between linoleic acid (LA) (OR = 0.98, 95% CI 0.96–1.01), arachidonic acid (AA) (1.00, 95% CI 0.99–1.01), and adrenic acid (AdrA) (0.93, 95% CI 0.71–1.21) with the risk of SA was found. Similarly, no associations of PUFAs with SA were found in single-locus MR analysis. Conclusion In the current study, we first found that there is no genetic evidence to support the causal role of omega-3 and omega-6 PUFAs in the risk of SA. From a public health perspective, our findings refute the notion that consumption of foods rich in PUFAs or the use of PUFAs supplementation can reduce the risk of SA.
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Affiliation(s)
- Jiao Wang
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yingyue Huang
- School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Huiling Yang
- Eastern-Fusion Master Studio of Hezhou, Hezhou, China
| | - Zihong Lin
- Hezhou Research Institute of Longevity Health Science, Hezhou, China
| | - Adrian I. Campos
- Department of Genetics & Computational Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Miguel E. Rentería
- Department of Genetics & Computational Biology, QIMR Berghofer Medical Research Institute, Herston, QLD, Australia
| | - Lin Xu
- School of Public Health, Sun Yat-sen University, Guangzhou, China
- Li Ka Shing Faculty of Medicine, School of Public Health, The University of Hong Kong, Hong Kong, Hong Kong SAR, China
- *Correspondence: Lin Xu,
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10
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Sun Y, Chatterjee R, Ronanki A, Ye K. Circulating Polyunsaturated Fatty Acids and COVID-19: A Prospective Cohort Study and Mendelian Randomization Analysis. Front Med (Lausanne) 2022; 9:923746. [PMID: 35783629 PMCID: PMC9243664 DOI: 10.3389/fmed.2022.923746] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 05/27/2022] [Indexed: 12/24/2022] Open
Abstract
Higher circulating polyunsaturated fatty acids (PUFAs), especially omega-3 fatty acids, have been linked to a better prognosis in patients of coronavirus disease 2019 (COVID-19). However, the effects and causality of pre-infection PUFA levels remain unclear. This study aimed to investigate the observational and causal associations of circulating PUFAs with COVID-19 susceptibility and severity. We first performed a prospective cohort study in UK Biobank, with 20,626 controls who were tested negative and 4,101 COVID-19 patients, including 970 hospitalized ones. Plasma PUFAs at baseline (blood samples collected from 2007 to 2010) were measured by nuclear magnetic resonance, including total PUFAs, omega-3 PUFAs, omega-6 PUFAs, docosahexaenoic acid (DHA), linoleic acid (LA), and the omega-6/omega-3 ratio. Moreover, going beyond UK Biobank, we leveraged summary statistics from existing genome-wide association studies to perform bidirectional two-sample Mendelian randomization (MR) analyses to examine the causal associations of eight individual PUFAs, measured in either plasma or red blood cells, with COVID-19 susceptibility and severity. In the observational association analysis of each PUFA measure separately, total, omega-3, and omega-6 PUFAs, DHA, and LA were associated with a lower risk of severe COVID-19. Omega-3 PUFAs and DHA were also associated with a lower risk of testing positive for COVID-19. The omega-6/omega-3 ratio was positively associated with risks of both susceptibility and severity. When omega-6, omega-3, and their ratio are jointly analyzed, only omega-3 PUFAs remained significantly and inversely associated with both susceptibility and severity. The forward MR analysis indicated that docosapentaenoic acid (DPA-n3) and arachidonic acid (AA) might be causally associated with a lower risk of severe COVID-19, with OR (95% CI) per one SD increase in the plasma level as 0.89 (0.81, 0.99) and 0.96 (0.94, 0.99), respectively. The reverse MR analysis did not support any causal effect of COVID-19 on PUFAs. Our observational analysis supported that higher circulating omega-3 PUFAs, especially DHA, may lower the susceptibility to and alleviate the severity of COVID-19. Our MR analysis further supported causal associations of DPA-n3 and AA with a lower risk of severe COVID-19.
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Affiliation(s)
- Yitang Sun
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, United States
| | - Radhika Chatterjee
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, United States
| | - Akash Ronanki
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, United States
| | - Kaixiong Ye
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, United States
- Institute of Bioinformatics, University of Georgia, Athens, GA, United States
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11
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Sun Y, Chatterjee R, Ronanki A, Ye K. Circulating polyunsaturated fatty acids and COVID-19: a prospective cohort study and Mendelian randomization analysis. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2022. [PMID: 35169810 PMCID: PMC8845430 DOI: 10.1101/2022.02.06.22270562] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background: Higher circulating polyunsaturated fatty acids (PUFAs), especially omega-3 ones, have been linked to a better prognosis in patients of coronavirus disease 2019 (COVID-19). However, the effects and causality of pre-infection PUFA levels remain unclear. Objective: To investigate the observational and causal associations of circulating PUFAs with COVID-19 susceptibility and severity. Design: We first performed a prospective cohort study in UK Biobank, with 20,626 controls who were tested negative and 4,101 COVID-19 patients, including 970 hospitalized ones. Plasma PUFAs at baseline were measured by nuclear magnetic resonance, including total PUFAs, omega-3 PUFAs, omega-6 PUFAs, docosahexaenoic acid (DHA), linoleic acid (LA), and the omega-6/omega-3 ratio. Moreover, bidirectional two-sample Mendelian randomization (MR) analyses were performed to examine the causal associations of eight individual PUFAs, measured in either plasma or red blood cells, with COVID-19 susceptibility and severity using summary statistics from existing genome-wide association studies. Results: In the observational association analysis, total PUFAs, omega-3 PUFAs, omega-6 PUFAs, DHA, and LA were associated with a lower risk of severe COVID-19. Omega-3 PUFAs and DHA were also associated with a lower risk of testing positive for COVID-19. The omega-6/omega-3 ratio was positively associated with risks of both susceptibility and severity. The forward MR analysis indicated that arachidonic acid (AA) and docosapentaenoic acid (DPA-n3) might be causally associated with a lower risk of severe COVID-19, with OR (95% CI) per one SD increase in the plasma level as 0.96 (0.94, 0.99) and 0.89 (0.81, 0.99), respectively. The reverse MR analysis did not support any causal effect of COVID-19 on PUFAs. Conclusions: Our observational analysis supported that higher circulating PUFAs, either omega-3 or omega-6, are protective against severe COVID-19, while omega-3 PUFAs, especially DHA, were also associated with reducing COVID-19 susceptibility. Our MR analysis further supported causal associations of AA and DPA-n3 with a lower risk of severe COVID-19.
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Affiliation(s)
- Yitang Sun
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, USA
| | - Radhika Chatterjee
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, USA
| | - Akash Ronanki
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, USA
| | - Kaixiong Ye
- Department of Genetics, Franklin College of Arts and Sciences, University of Georgia, Athens, GA, USA.,Institute of Bioinformatics, University of Georgia, Athens, GA, USA
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12
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Adibnia S, Zarei A, Sadeghi AA, Chamani M. Effect of palmitic, linoleic and α-linolenic acids on blood cells count and interleukin-4, 8 genes expression in lambs experimentally infected with foot and mouth disease virus. Anim Biotechnol 2022; 33:571-578. [DOI: 10.1080/10495398.2021.2013855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Affiliation(s)
- Saba Adibnia
- Department of Animal Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Abolfazl Zarei
- Department of Animal Science, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Ali-Asghar Sadeghi
- Department of Animal Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Mohammad Chamani
- Department of Animal Science, Science and Research Branch, Islamic Azad University, Tehran, Iran
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13
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Ekström S, Sdona E, Klevebro S, Hallberg J, Georgelis A, Kull I, Melén E, Risérus U, Bergström A. Dietary intake and plasma concentrations of PUFAs in childhood and adolescence in relation to asthma and lung function up to adulthood. Am J Clin Nutr 2021; 115:886-896. [PMID: 34964829 PMCID: PMC8895221 DOI: 10.1093/ajcn/nqab427] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 12/27/2021] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND PUFAs may influence the risk of asthma; however, long-term prospective studies including objective biomarkers of PUFA intake are lacking. OBJECTIVES The objective was to investigate the role of dietary intake and plasma concentrations of n-3 and n-6 (ω-3 and ω-6) PUFAs in childhood and adolescence for the development of asthma and lung function up to young adulthood. METHODS The study included participants from the Swedish prospective birth cohort BAMSE. Dietary intake of PUFAs was calculated from FFQs (n = 1992) and plasma proportions of PUFAs were measured in phospholipids (n = 831). We analyzed the n-3 PUFA α-linolenic acid (ALA; 18:3n-3); the sum of very-long-chain (VLC) n-3 PUFAs: EPA (20:5n-3), DHA (22:6n-3), and docosapentaenoic acid (22:5n-3); and the n-6 PUFAs linoleic acid (LA; 18:2n-6) and arachidonic acid (AA; 20:4n-6). Asthma was assessed by questionnaires at 8, 16, and 24 y and lung function was measured by spirometry at 24 y. RESULTS A high (≥median) self-reported dietary intake of LA at 8 y and AA at 16 y was associated with increased risk of prevalent asthma at 24 y (OR: 1.41; 95% CI: 1.10, 1.82 and OR: 1.32; 95% CI: 1.02, 1.70, respectively). In contrast, plasma proportions of ALA, ∑VLC n-3 PUFAs, and AA at 8 y, as well as LA at 16 y, were inversely associated with prevalent asthma at 24 y (e.g., OR: 0.55; 95% CI: 0.38, 0.81 for ∑VLC n-3 PUFAs). No consistent associations were observed with lung function. CONCLUSIONS High dietary intake of certain n-6 PUFAs in childhood or adolescence may be associated with increased risk of asthma up to young adulthood, whereas dietary biomarkers of certain n-3 and n-6 PUFAs in plasma may be associated with decreased risk. Thus, the role of diet compared with altered metabolism of PUFAs needs further investigation to improve dietary preventive strategies for asthma.
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Affiliation(s)
| | - Emmanouela Sdona
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Susanna Klevebro
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institute, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Jenny Hallberg
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Antonios Georgelis
- Center for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
| | - Inger Kull
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institute, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
- Department of Clinical Science and Education, Södersjukhuset, Karolinska Institute, Stockholm, Sweden
- Sachs’ Children and Youth Hospital, Södersjukhuset, Stockholm, Sweden
| | - Ulf Risérus
- Clinical Nutrition and Metabolism, Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden
| | - Anna Bergström
- Center for Occupational and Environmental Medicine, Region Stockholm, Stockholm, Sweden
- Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden
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14
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Darwish RS, Shawky E, Nassar KM, Rashad ElSayed RM, Hussein DE, Ghareeb DA, El Sohafy SM. Differential anti-inflammatory biomarkers of the desert truffles Terfezia claveryi and Tirmania nivea revealed via UPLC-QqQ-MS-based metabolomics combined to chemometrics. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111965] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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15
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Li Y, Chen W, Tian S, Xia S, Yang B. Evaluating the Causal Association Between Educational Attainment and Asthma Using a Mendelian Randomization Design. Front Genet 2021; 12:716364. [PMID: 34434223 PMCID: PMC8381375 DOI: 10.3389/fgene.2021.716364] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/12/2021] [Indexed: 12/12/2022] Open
Abstract
Asthma is a common chronic respiratory disease. In the past 10 years, genome-wide association study (GWAS) has been widely used to identify the common asthma genetic variants. Importantly, these publicly available asthma GWAS datasets provide important data support to investigate the causal association of kinds of risk factors with asthma by a Mendelian randomization (MR) design. It is known that socioeconomic status is associated with asthma. However, it remains unclear about the causal association between socioeconomic status and asthma. Here, we selected 162 independent educational attainment genetic variants as the potential instruments to evaluate the causal association between educational attainment and asthma using large-scale GWAS datasets of educational attainment (n = 405,072) and asthma (n = 30,810). We conducted a pleiotropy analysis using the MR-Egger intercept test and the MR pleiotropy residual sum and outlier (MR-PRESSO) test. We performed an MR analysis using inverse-variance weighted, weighted median, MR-Egger, and MR-PRESSO. The main analysis method inverse-variance weighted indicated that each 1 standard deviation increase in educational attainment (3.6 years) could reduce 35% asthma risk [odds ratio (OR) = 0.65, 95% confidence interval (CI) 0.51–0.85, P = 0.001]. Importantly, evidence from other MR methods further supported this finding, including weighted median (OR = 0.55, 95% CI 0.38–0.80, P = 0.001), MR-Egger (OR = 0.48, 95% CI 0.16–1.46, P = 0.198), and MR-PRESSO (OR = 0.65, 95% CI 0.51–0.85, P = 0.0015). Meanwhile, we provide evidence to support that educational attainment protects against asthma risk dependently on cognitive performance using multivariable MR analysis. In summary, we highlight the protective role of educational attainment against asthma. Our findings may have public health applications and deserve further investigation.
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Affiliation(s)
- Yunxia Li
- Department of Respiratory and Critical Care Medicine, Affiliated Central Hospital, Shenyang Medical College, Shenyang, China
| | - Wenhao Chen
- Department of Respiratory and Critical Care Medicine, Affiliated Central Hospital, Shenyang Medical College, Shenyang, China
| | - Shiyao Tian
- Department of Respiratory and Critical Care Medicine, Affiliated Central Hospital, Shenyang Medical College, Shenyang, China
| | - Shuyue Xia
- Department of Respiratory and Critical Care Medicine, Affiliated Central Hospital, Shenyang Medical College, Shenyang, China
| | - Biao Yang
- Department of Pathogen Biology, Shenyang Medical College, Shenyang, China
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16
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Buckner T, Vanderlinden LA, DeFelice BC, Carry PM, Kechris K, Dong F, Fiehn O, Frohnert BI, Clare-Salzler M, Rewers M, Norris JM. The oxylipin profile is associated with development of type 1 diabetes: the Diabetes Autoimmunity Study in the Young (DAISY). Diabetologia 2021; 64:1785-1794. [PMID: 33893822 PMCID: PMC8249332 DOI: 10.1007/s00125-021-05457-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/24/2021] [Indexed: 12/22/2022]
Abstract
AIMS/HYPOTHESIS Oxylipins are lipid mediators derived from polyunsaturated fatty acids. Some oxylipins are proinflammatory (e.g. those derived from arachidonic acid [ARA]), others are pro-resolving of inflammation (e.g. those derived from α-linolenic acid [ALA], docosahexaenoic acid [DHA] and eicosapentaenoic acid [EPA]) and others may be both (e.g. those derived from linoleic acid [LA]). The goal of this study was to examine whether oxylipins are associated with incident type 1 diabetes. METHODS We conducted a nested case-control analysis in the Diabetes Autoimmunity Study in the Young (DAISY), a prospective cohort study of children at risk of type 1 diabetes. Plasma levels of 14 ARA-derived oxylipins, ten LA-derived oxylipins, six ALA-derived oxylipins, four DHA-derived oxylipins and two EPA-related oxylipins were measured by ultra-HPLC-MS/MS at multiple timepoints related to autoantibody seroconversion in 72 type 1 diabetes cases and 71 control participants, which were frequency matched on age at autoantibody seroconversion (of the case), ethnicity and sample availability. Linear mixed models were used to obtain an age-adjusted mean of each oxylipin prior to type 1 diabetes. Age-adjusted mean oxylipins were tested for association with type 1 diabetes using logistic regression, adjusting for the high risk HLA genotype HLA-DR3/4,DQB1*0302. We also performed principal component analysis of the oxylipins and tested principal components (PCs) for association with type 1 diabetes. Finally, to investigate potential critical timepoints, we examined the association of oxylipins measured before and after autoantibody seroconversion (of the cases) using PCs of the oxylipins at those visits. RESULTS The ARA-related oxylipin 5-HETE was associated with increased type 1 diabetes risk. Five LA-related oxylipins, two ALA-related oxylipins and one DHA-related oxylipin were associated with decreased type 1 diabetes risk. A profile of elevated LA- and ALA-related oxylipins (PC1) was associated with decreased type 1 diabetes risk (OR 0.61; 95% CI 0.40, 0.94). A profile of elevated ARA-related oxylipins (PC2) was associated with increased diabetes risk (OR 1.53; 95% CI 1.03, 2.29). A critical timepoint analysis showed type 1 diabetes was associated with a high ARA-related oxylipin profile at post-autoantibody-seroconversion but not pre-seroconversion. CONCLUSIONS/INTERPRETATION The protective association of higher LA- and ALA-related oxylipins demonstrates the importance of both inflammation promotion and resolution in type 1 diabetes. Proinflammatory ARA-related oxylipins may play an important role once the autoimmune process has begun.
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Affiliation(s)
- Teresa Buckner
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | | | - Patrick M Carry
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | - Fran Dong
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | | | | | | | - Marian Rewers
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Jill M Norris
- University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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17
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Ye Z, Yu J, Yan W, Zhang J, Yang D, Yao G, Liu Z, Wu Y, Hou X. Integrative iTRAQ-based proteomic and transcriptomic analysis reveals the accumulation patterns of key metabolites associated with oil quality during seed ripening of Camellia oleifera. HORTICULTURE RESEARCH 2021; 8:157. [PMID: 34193845 PMCID: PMC8245520 DOI: 10.1038/s41438-021-00591-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 04/28/2021] [Accepted: 05/04/2021] [Indexed: 05/12/2023]
Abstract
Camellia oleifera (C. oleifera) is one of the four major woody oil-bearing crops in the world and has relatively high ecological, economic, and medicinal value. Its seeds undergo a series of complex physiological and biochemical changes during ripening, which is mainly manifested as the accumulation and transformation of certain metabolites closely related to oil quality, especially flavonoids and fatty acids. To obtain new insights into the underlying molecular mechanisms, a parallel analysis of the transcriptome and proteome profiles of C. oleifera seeds at different maturity levels was conducted using RNA sequencing (RNA-seq) and isobaric tags for relative and absolute quantification (iTRAQ) complemented with gas chromatography-mass spectrometry (GC-MS) data. A total of 16,530 transcripts and 1228 proteins were recognized with significant differential abundances in pairwise comparisons of samples at various developmental stages. Among these, 317 were coexpressed with a poor correlation, and most were involved in metabolic processes, including fatty acid metabolism, α-linolenic acid metabolism, and glutathione metabolism. In addition, the content of total flavonoids decreased gradually with seed maturity, and the levels of fatty acids generally peaked at the fat accumulation stage; these results basically agreed with the regulation patterns of genes or proteins in the corresponding pathways. The expression levels of proteins annotated as upstream candidates of phenylalanine ammonia-lyase (PAL) and chalcone synthase (CHS) as well as their cognate transcripts were positively correlated with the variation in the flavonoid content, while shikimate O-hydroxycinnamoyltransferase (HCT)-encoding genes had the opposite pattern. The increase in the abundance of proteins and mRNAs corresponding to alcohol dehydrogenase (ADH) was associated with a reduction in linoleic acid synthesis. Using weighted gene coexpression network analysis (WGCNA), we further identified six unique modules related to flavonoid, oil, and fatty acid anabolism that contained hub genes or proteins similar to transcription factors (TFs), such as MADS intervening keratin-like and C-terminal (MIKC_MADS), type-B authentic response regulator (ARR-B), and basic helix-loop-helix (bHLH). Finally, based on the known metabolic pathways and WGCNA combined with the correlation analysis, five coexpressed transcripts and proteins composed of cinnamyl-alcohol dehydrogenases (CADs), caffeic acid 3-O-methyltransferase (COMT), flavonol synthase (FLS), and 4-coumarate: CoA ligase (4CL) were screened out. With this exploratory multiomics dataset, our results presented a dynamic picture regarding the maturation process of C. oleifera seeds on Hainan Island, not only revealing the temporal specific expression of key candidate genes and proteins but also providing a scientific basis for the genetic improvement of this tree species.
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Affiliation(s)
- Zhouchen Ye
- College of Horticulture, Hainan University, Haikou, China
| | - Jing Yu
- College of Horticulture, Hainan University, Haikou, China
| | - Wuping Yan
- College of Horticulture, Hainan University, Haikou, China
| | - Junfeng Zhang
- College of Horticulture, Hainan University, Haikou, China
| | - Dongmei Yang
- College of Horticulture, Hainan University, Haikou, China
| | - Guanglong Yao
- College of Horticulture, Hainan University, Haikou, China
| | - Zijin Liu
- College of Horticulture, Hainan University, Haikou, China
| | - Yougen Wu
- College of Horticulture, Hainan University, Haikou, China.
| | - Xilin Hou
- State Key Laboratory of Crop Genetics & Germplasm Enhancement, Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (East China), Ministry of Agriculture and Rural Affairs of the P.R. China, Engineering Research Center of Germplasm Enhancement and Utilization of Horticultural Crops, Ministry of Education of the P.R. China, Institute of Plasma Engineering, Nanjing, China.
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18
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Tan Y, Zou L, Li N, Huang L, Chen M, Li X, Zheng X, Li W, Li Y, Yang CT. Data Analysis-Driven Precise Asthmatic Treatment by Targeting Mast Cells. Endocr Metab Immune Disord Drug Targets 2021; 21:315-323. [PMID: 32520694 DOI: 10.2174/1871530320666200610152922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 04/23/2020] [Accepted: 05/04/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Although the importance of mast cells in asthma has been studied, mast cellsinduced global changes in lungs are largely unknown. Data-driven identification contributes to discovering significant biomarkers or therapeutic targets, which are the basis of effective clinical medications. OBJECTIVE This study aims to explore the effects of mast cells on gene expression in asthmatic lungs, and to assess the curative effects of inhaled budesonide (BUD). METHODS Pulmonary gene expression in KitWsh mice with or without mast cell engraftment was analyzed with R software. Functional enrichment of Gene Ontology and KEGG was carried out through the DAVID online tool. Hub genes were identified with String and Cytoscape software. RESULTS The array analyses showed that the mast cell engraftment enhanced inflammation/immune response, cytokine/chemokine signal, and monocyte/neutrophil/lymphocyte chemotaxis. Interleukin (IL)-6 was identified to be a significant hub gene with the highest interaction degree. Based on this, the effects of BUD were investigated on the aspects of anti-inflammation. BUD's treatment was found to reduce serum IL-6 content and pulmonary inflammation in ovalbumin-induced asthma rats. The treatment also downregulated beta-tryptase expression both in lung tissues and serum. Morphologically, the accumulation and degranulation of mast cells were significantly suppressed. Notably, the effects of BUD on inflammation and degranulation were comparable with Tranilast (a classic mast cell inhibitor), while a remarkable synergy was not observed. CONCLUSION This study presented a unique pulmonary gene profile induced by mast cell engraftment, which could be reversed through blockage of mast cells or inhaled BUD.
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Affiliation(s)
- Yupin Tan
- Department of Pediatrics, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha 410005, China
| | - Lili Zou
- Department of Pediatrics, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha 410005, China
| | - Na Li
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China
| | - Li Huang
- Department of Pancreatobiliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - Meiji Chen
- Department of Pediatrics, East Division of The First Affiliated Hospital, Sun Yatsen University, Guangzhou 510700, China
| | - Xuexiang Li
- Department of Cardiology, Laizhou People's Hospital, Laizhou 261400, China
| | - Xue Zheng
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China
| | - Wenkai Li
- Department of Pediatrics, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha 410005, China
| | - Yun Li
- Department of Pediatrics, Hunan Provincial People's Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha 410005, China
| | - Chun-Tao Yang
- Affiliated Cancer Hospital & Institute of Guangzhou Medical University, Key Laboratory of Protein Modification and Degradation, School of Basic Medical Science, Guangzhou Medical University, Guangzhou 511436, China
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Huang X, Yi S, Hu J, Du Z, Wang Q, Ye Z, Su G, Kijlstra A, Yang P. Linoleic acid inhibits in vitro function of human and murine dendritic cells, CD4 +T cells and retinal pigment epithelial cells. Graefes Arch Clin Exp Ophthalmol 2020; 259:987-998. [PMID: 33079282 DOI: 10.1007/s00417-020-04972-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Revised: 09/29/2020] [Accepted: 10/07/2020] [Indexed: 02/07/2023] Open
Abstract
PURPOSE Increased linoleic acid (LA) was observed in acute anterior uveitis (AAU) patient feces in our previous study. To investigate the immunoregulatory effect of LA, we studied the effect of LA on human and murine dendritic cells (DCs), CD4+T cells, and retinal pigment epithelial (RPE) cells in vitro. METHODS The level of LA in feces from AAU patients and healthy individuals was measured by gas chromatography coupled with a mass spectrometer (GC-MS). The immunoregulatory effect of LA on human and murine DCs, CD4+ T cells, and RPE cells was evaluated by enzyme linked immunosorbent assay (ELISA) and flow cytometry (FCM). The effect of LA on DCs was evaluated by Tandem mass tag (TMT)-based proteomics analysis. RESULTS Increased LA was observed in feces from AAU patients (1018.35 ± 900.01 mg/kg) as compared with healthy individuals (472.55 ± 365.49 mg/kg, p = 0.0136). LA attenuated the antigen-presenting function of human and murine DCs by decreasing the expression of CD40, the secretion of IL-6 and IL-12p70, and the ability to shift naïve T cells towards T helper type 1 (Th1) and Th17 cells. LA also inhibited the secretion of MCP-1 and IL-8 from RPE cells. Proteomics analysis showed differential expression of 28 proteins, including squalene epoxidase (SQLE), farnesyl-diphosphate farnesyltransferase 1 (FDFT1), and cytochrome P450 family 51 subfamily A member 1 (CYP51A1), in LA-treated DCs compared with controls. LA also accelerated the apoptosis of DCs from healthy individuals. CONCLUSION LA inhibited the function of human and murine DCs, CD4+T cells, and RPE cells, regulated the expression of proteins, and promoted the apoptosis of human DCs. These results collectively suggest that LA might decrease the function of immune cells in vitro, and further studies are needed to investigate its role in the pathogenesis of AAU.
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Affiliation(s)
- Xinyue Huang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Shenglan Yi
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Jianping Hu
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Ziyu Du
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Qingfeng Wang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Zi Ye
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Guannan Su
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China
| | - Aize Kijlstra
- University Eye Clinic Maastricht, Maastricht, Netherlands
| | - Peizeng Yang
- The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Ophthalmology, and Chongqing Eye Institute, Chongqing, People's Republic of China.
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Ye Z, Wu Y, Ul Haq Muhammad Z, Yan W, Yu J, Zhang J, Yao G, Hu X. Complementary transcriptome and proteome profiling in the mature seeds of Camellia oleifera from Hainan Island. PLoS One 2020; 15:e0226888. [PMID: 32027663 PMCID: PMC7004384 DOI: 10.1371/journal.pone.0226888] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Accepted: 12/08/2019] [Indexed: 01/22/2023] Open
Abstract
Camellia oleifera Abel. (C. oleifera), as an important woody tree species producing edible oils in China, has attracted enormous attention due to its abundant unsaturated fatty acids and their associated benefits to human health. To reveal novel insights into the characters during the maturation period of this plant as well as the molecular basis of fatty acid biosynthesis and degradation, we conducted a conjoint analysis of the transcriptome and proteome of C. oleifera seeds from Hainan Island. Using RNA sequencing (RNA-seq) technology and shotgun proteomic method, 59,391 transcripts and 40,500 unigenes were obtained by TIGR Gene Indices Clustering Tools (TGICL), while 1691 protein species were identified from Mass Spectrometry (MS). Subsequently, all genes and proteins were employed in euKaryotic Orthologous Groups (KOG) classification, Gene Ontology (GO) annotation, and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis to investigate their essential functions. The results indicated that the most abundant pathways were biological metabolic processes. There were 946 unigenes associated with lipid metabolism at the transcriptome level, with 116 proteins at the proteome level; among these, 38 specific proteins were involved in protein-protein interactions, with the majority being related to fatty acid catabolic process. The expression levels of 21 candidate unigenes encoding target proteins were further detected by quantitative real-time polymerase chain reaction (qRT-PCR). Finally, Gas Chromatography Mass Spectrometry (GC-MS) was carried out to determine the fatty acid composition of C. oleifera oil. These findings not only deepened our understanding about the molecular mechanisms of fatty acid metabolism but also offered new evidence concerning the roles of relevant proteins in oil-bearing crops. Furthermore, the lipid-associated proteins recognized in this research might be helpful in providing a reference for the synthetic regulation of C. oleifera oil quality by genetic engineering techniques, thus resulting in potential application in agriculture.
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Affiliation(s)
- Zhouchen Ye
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
| | - Yougen Wu
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
| | - Zeeshan Ul Haq Muhammad
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
| | - Wuping Yan
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
| | - Jing Yu
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
| | - Junfeng Zhang
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
| | - Guanglong Yao
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
| | - Xinwen Hu
- Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan Province, China
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