1
|
Jiang T, Mo X, Zhan R, Zhang Y. Causal pathway from telomere length to occurrence and 28-day mortality of sepsis: an observational and mendelian randomization study. Aging (Albany NY) 2023; 15:7727-7740. [PMID: 37543429 PMCID: PMC10457059 DOI: 10.18632/aging.204937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 07/14/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND Telomeres are considered to be a physiological marker of aging. Elucidating relationship between telomere length and sepsis is an essential step towards understanding the biological processes involved in sepsis and its salvation. Mendelian randomization studies based on SNPs have given us new insights into genetic susceptibility to disease. OBJECTIVES To explore the causal pathway from telomere length to occurrence and 28-day mortality of sepsis. METHODS Leveraging genetic information resource of UK Biobank, we captured three groups of large-scale GWAS data: leukocyte telomere length (LTL), sepsis and all-cause death of 28-day. Study design consisted of three parts: forward analysis, reverse analysis and one-way analysis. Genetic instrumental variables were selected for different analyses under the premise that three MR core assumptions were satisfied. Causality was determined by means of IVW. RESULTS In forward analysis, we did not observe a significant causal pathway from sepsis to LTL under IVW model: β (SE) was -0.0051 (0.0075) with a p-value of 0.499. In reverse analysis, based on the IVW model, the OR (95% CI) was 0.89 (0.80-0.99) and the p-values was 0.043; based on the results of leave out method and single SNP analysis, we obtained seven key SNPs. There were results of IVW model in the one-way analysis: β (SE) was -0.0287(0.1261). CONCLUSIONS Short LTL increases susceptibility to sepsis, but sepsis does not shorten telomere length. LTL does not affect sepsis 28-day all-cause mortality and does not serve as a causal intermediate in gene regulation during the progression of sepsis to 28-day death.
Collapse
Affiliation(s)
- Tao Jiang
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People’s Republic of China
| | - Xuan Mo
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People’s Republic of China
| | - Ruonan Zhan
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University Gaoxin District, Hefei, Anhui, People’s Republic of China
| | - Yi Zhang
- Department of Anesthesiology, Hubei Key Laboratory of Geriatric Anesthesia and Perioperative Brain Health, and Wuhan Clinical Research Center for Geriatric Anesthesia, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, People’s Republic of China
| |
Collapse
|
2
|
Abstract
Genetic factors are involved in the etiology of most diseases, but prior to 2000, the methods for identifying such factors were very limited. Genome-wide association study (GWAS), developed in the 2000s, is an analytical method that can be applied to most diseases, including endocrine disorders. GWAS has provided a wealth of information on disease risks and the molecular pathogenesis of many human diseases. This review summarizes key findings from GWAS for thyroid physiology and diseases, and illustrates how GWAS is a powerful research tool to elucidate the molecular mechanisms of the diseases.
Collapse
Affiliation(s)
- Satoshi Narumi
- Department of Molecular Endocrinology, National Research Institute for Child Health and Development, Tokyo 157-8535, Japan
| |
Collapse
|
3
|
Sanchez M, Kannengiesser C, Hoang S, Potier L, Fumeron F, Venteclef N, Scheen A, Gautier JF, Hadjadj S, Marre M, Roussel R, Mohammedi K, Velho G. Leukocyte telomere length, allelic variations in related genes and risk of coronary heart disease in people with long-standing type 1 diabetes. Cardiovasc Diabetol 2022; 21:206. [PMID: 36221106 PMCID: PMC9554968 DOI: 10.1186/s12933-022-01635-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 09/01/2022] [Indexed: 11/20/2022] Open
Abstract
Background Type 1 diabetes is associated with accelerated vascular aging and advanced atherosclerosis resulting in increased rates of cardiovascular disease and premature death. We evaluated associations between Leukocyte telomere length (LTL), allelic variations (SNPs) in LTL-related genes and the incidence of coronary heart disease (CHD) in adults with long-standing type 1 diabetes. Methods We assessed associations of LTL, measured at baseline by RT–PCR, and of SNPs in 11 LTL-related genes with the risk of coronary heart disease (CHD: myocardial infarction or coronary revascularization) and all-cause death during follow-up in two multicenter French-Belgian prospective cohorts of people with long-standing type 1 diabetes. Results In logistic and Cox analyses, the lowest tertile of LTL distribution (short telomeres) at baseline was associated with the prevalence of myocardial infarction at baseline and with increased risk of CHD (Hazard ratio 3.14 (1.39–7.70), p = 0.005, for shorter vs longer tertile of LTL) and all-cause death (Hazard ratio 1.63 (95% CI 1.04–2.55), p = 0.03, for shorter vs combined intermediate and longer tertiles of LTL) during follow-up. Allelic variations in six genes related to telomere biology (TERC, NAF1, TERT, TNKS, MEN1 and BICD1) were also associated with the incidence of CHD during follow-up. The associations were independent of sex, age, duration of diabetes, and a range of relevant confounding factors at baseline. Conclusions Our results suggest that short LTL is an independent risk factor for CHD in people with type 1 diabetes. Supplementary Information The online version contains supplementary material available at 10.1186/s12933-022-01635-0.
Collapse
Affiliation(s)
- Manuel Sanchez
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France. .,UFR de Médecine, Université Paris Cité, Paris, France. .,Department of Geriatrics, Assistance Publique - Hôpitaux de Paris, Bichat University Hospital, 46 rue Henri Huchard, 75018, Paris, France.
| | - Caroline Kannengiesser
- UFR de Médecine, Université Paris Cité, Paris, France.,Department of Genetics, Assistance Publique - Hôpitaux de Paris, DHU FIRE, Bichat Hospital, Paris, France
| | - Sophie Hoang
- Department of Geriatrics, Charles-Foix University Hospital, Vitry sur Seine, France
| | - Louis Potier
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France.,UFR de Médecine, Université Paris Cité, Paris, France.,Department of Diabetology, Endocrinology and Nutrition, Assistance Publique - Hôpitaux de Paris, DHU FIRE, Bichat Hospital, Paris, France
| | - Frédéric Fumeron
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France
| | - Nicolas Venteclef
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France
| | - André Scheen
- Department of Diabetology, Endocrinology and Nutrition, Sart Tilman University Hospital, Liège, Belgium
| | - Jean-François Gautier
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France.,UFR de Médecine, Université Paris Cité, Paris, France.,Department of Diabetology, Endocrinology and Nutrition, Assistance Publique - Hôpitaux de Paris, Lariboisière University Hospital, Paris, France
| | - Samy Hadjadj
- Institut du Thorax, INSERM, CNRS, CHU Nantes, Université de Nantes, Nantes, France
| | - Michel Marre
- Clinique Ambroise Paré, Neuilly-sur-Seine, France
| | - Ronan Roussel
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France.,UFR de Médecine, Université Paris Cité, Paris, France.,Department of Diabetology, Endocrinology and Nutrition, Assistance Publique - Hôpitaux de Paris, DHU FIRE, Bichat Hospital, Paris, France
| | - Kamel Mohammedi
- INSERM U1034, Bordeaux University and Hospital, Bordeaux, France
| | - Gilberto Velho
- INSERM UMR-S1151, CNRS UMR-S8253, Institut Necker-Enfants Malades, Université Paris Cité, Paris, France
| |
Collapse
|
4
|
Li Y, Cheang I, Zhang Z, Yao W, Zhou Y, Zhang H, Liu Y, Zuo X, Li X, Cao Q. Prognostic Association of TERC, TERT Gene Polymorphism, and Leukocyte Telomere Length in Acute Heart Failure: A Prospective Study. Front Endocrinol (Lausanne) 2021; 12:650922. [PMID: 33763035 PMCID: PMC7982721 DOI: 10.3389/fendo.2021.650922] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 02/01/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Telomere length and telomerase are associated in development of cardiovascular diseases. Study aims to investigate the associations of TERC and TERT gene polymorphism and leukocyte telomere length (LTL) in the prognosis of acute heart failure (AHF). METHODS Total 322 patients with AHF were enrolled and divided into death and survival group according to all-cause mortality within 18 months. Seven single nucleotide polymorphisms (SNPs) of TERC and TERT were selected. Baseline characteristics, genotype distribution and polymorphic allele frequency, and genetic model were initially analyzed. Genotypes and the LTL were determined for further analysis. RESULTS Compared to carrying homozygous wild genotype, the risk of death in patients with mutated alleles of four SNPs- rs12696304(G>C), rs10936599(T>C), rs1317082(G>A), and rs10936601(T>C) of TERC were significantly higher. The dominant models of above were independently associated with mortality. In recessive models, rs10936599 and rs1317082 of TERC, rs7726159 of TERT were independently associated with long-term mortality. Further analysis showed, in haplotype consisting with TERC - rs12696304, rs10936599, rs1317082, and rs10936601, mutant alleles CCAC and wild alleles GTGT were significant difference between groups (P<0.05). CCAC is a risk factor and GTGT is a protective factor for AHF patients. Relative LTL decreased over age, but showed no difference between groups and genotypes. CONCLUSIONS The SNPs of TERC and TERT are associated with the prognosis of AHF, and are the independent risk factors for predicting 18-month mortality in AHF.
Collapse
Affiliation(s)
- Yanxiu Li
- Department of Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Iokfai Cheang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhongwen Zhang
- Department of General Surgery, The Affiliated Jiangning Hospital of Nanjing Medical University, Nanjing, China
| | - Wenming Yao
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yanli Zhou
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Haifeng Zhang
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Yun Liu
- Department of Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiangrong Zuo
- Department of Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xinli Li
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Quan Cao, ; Xinli Li,
| | - Quan Cao
- Department of Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- *Correspondence: Quan Cao, ; Xinli Li,
| |
Collapse
|
5
|
Cheng G, Wang L, Dai M, Wei F, Xu D. Shorter Leukocyte Telomere Length coupled with lower expression of Telomerase Genes in patients with Essential Hypertension. Int J Med Sci 2020; 17:2180-2186. [PMID: 32922179 PMCID: PMC7484671 DOI: 10.7150/ijms.48456] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/27/2020] [Indexed: 12/29/2022] Open
Abstract
Background: The essential hypertension (EH) pathophysiology remains poorly understood. Many studies indicate that reduced leukocyte telomere length (LTL) is involved in the EH pathogenesis, however, the direct analysis of arterial telomere length (ATL) from EH patients and normotensive individuals did not show a difference. To address these discrepant observations between LTL and ATL, we performed comprehensive analyses of LTL, telomerase gene expression and their genetic variants in healthy normotensive controls and EH patients. Methods: Sex-matched 206 EH patients and equal numbers of healthy controls were recruited. LTL, and the expression of two key telomerase components, telomerase reverse transcriptase (TERT) and internal RNA template (TERC) were determined using qPCR. Genetic variants of rs2736100 at the TERT and rs12696304 at the TERC loci were determined using TaqMan genotyping kits. Results: LTL was significantly shorter in EH patients than in their normotensive controls (0.96 ± 0.52 vs 1.19 ± 0.58, P = 0.001). Moreover, TERT and TERC expression in patients' leukocytes were substantially lower compare to that in healthy controls (TERT, 0.98 ± 0.98 vs 1.76 ± 1.75, P = 0.003; TERC, 1.26 ± 1.62 vs 4.69 ± 3.61, P < 0.001). However, there were no differences in the genetic variants of rs2736100 and rs12696304 between patient and control groups. Conclusions: EH patients have significantly shorter LTL, which may result from defective TERT and TERC expression in leukocytes. Collectively, lower telomerase expression contributes to shorter LTL observed in EH patients, and telomerase activators may be considered for EH therapy.
Collapse
Affiliation(s)
- Guanghui Cheng
- Central Research Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, PR China
| | - Lina Wang
- Central Research Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, PR China
| | - Mingkai Dai
- Central Research Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, PR China
| | - Fengtao Wei
- Department of Cardiology, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, PR China
| | - Dawei Xu
- Department of Medicine, Division of Hematology, Bioclinicum and Center for Molecular Medicine, Karolinska Institutet and Karolinska University Hospital Solna, SE-171 76 Solna, Sweden
| |
Collapse
|
6
|
Identification of a prognostic 28-gene expression signature for gastric cancer with lymphatic metastasis. Biosci Rep 2019; 39:BSR20182179. [PMID: 30971501 PMCID: PMC6499450 DOI: 10.1042/bsr20182179] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 04/02/2019] [Accepted: 04/06/2019] [Indexed: 12/23/2022] Open
Abstract
Gastric cancer (GC) patients have high mortality due to late-stage diagnosis, which is closely associated with lymph node metastasis. Exploring the molecular mechanisms of lymphatic metastasis may inform the research into early diagnostics of GC. In the present study, we obtained RNA-Seq data from The Cancer Genome Altas and used Limma package to identify differentially expressed genes (DEGs) between lymphatic metastases and non-lymphatic metastases in GC tissues. Then, we used an elastic net-regularized COX proportional hazard model for gene selection from the DEGs and constructed a regression model composed of 28-gene signatures. Furthermore, we assessed the prognostic performance of the 28-gene signature by analyzing the receive operating characteristic curves. In addition, we selected the gene PELI2 amongst 28 genes and assessed the roles of this gene in GC cells. The good prognostic performance of the 28-gene signature was confirmed in the testing set, which was also validated by GSE66229 dataset. In addition, the biological experiments showed that PELI2 could promote the growth and metastasis of GC cells by regulating vascular endothelial growth factor C. Our study indicates that the identified 28-gene signature could be considered as a sensitive predictive tool for lymphatic metastasis in GC.
Collapse
|
7
|
Chen YF, Zhou KW, Yang GZ, Chen C. Association between lipoproteins and telomere length in US adults: data from the NHANES 1999-2002. Lipids Health Dis 2019; 18:80. [PMID: 30935416 PMCID: PMC6444542 DOI: 10.1186/s12944-019-1030-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 03/26/2019] [Indexed: 01/26/2023] Open
Abstract
Background Evidence regarding the correlation between lipoproteins and telomere length in US adults is limited. We aimed to investigate whether lipoproteins was associated with telomere length using US National Health and Nutrition Examination Survey (NHANES) database. Methods A total of 6468 selected participants were identified in the NHANES Data Base (1999–2002). The independent and dependent variables were lipoproteins and telomere length, respectively. The covariates included demographic data, dietary data, physical examination data, and comorbidities. Results In fully-adjusted model, we found that 0.1 differences of telomere length were positively associated with HDL-C [0.19 (95% CI 0.07, 0.31)], while the associations between LDL-C [0.19 (95% CI -0.27, 0.65)], TG [− 1.00 (95% CI -2.09, 0.07) and telomere length were not detected. By nonlinearity test, only the relationship between HDL-C and telomere length was nonlinear. The inflection point we got was 1.25. On the left side of the inflection point (telomere length ≤ 1.25), a difference in 0.1 of telomere length was associated with 0.50 difference in HDL-C. Conclusion After adjusting for demographic data, dietary data, physical examination data, and comorbidities, telomere length is not associated with LDL-C and TG, but is positively associated with HDL-C when telomere length is less than 1.25. Electronic supplementary material The online version of this article (10.1186/s12944-019-1030-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yun-Fen Chen
- Department of Nephropathy of the people's hospital of Guizhou province, 49 # Zhongshan East road, Guiyang, 550001, Guizhou, China
| | - Kai-Wen Zhou
- Department of Immunology and Microbiology and Statistical Epidemiology, Guizhou University of Traditional Chinese Medicine, 84# ShiDong Road, Guiyang, 550001, Guizhou, China
| | - Gui-Zhen Yang
- Department of Immunology and Microbiology and Statistical Epidemiology, Guizhou University of Traditional Chinese Medicine, 84# ShiDong Road, Guiyang, 550001, Guizhou, China
| | - Chi Chen
- School of Medicine and Nursing of Dezhou College, 566# Decheng District University West Road, Dezhou City, 553433, Shandong, China. .,Department of Immunology and Microbiology, Guiyang College of Traditional Chinese Medicine, 84# ShiDong Road, Guiyang, 550001, Guizhou, China.
| |
Collapse
|
8
|
Karimi B, Yunesian M, Nabizadeh R, Mehdipour P. Serum Level of Total Lipids and Telomere Length in the Male Population: A Cross-Sectional Study. Am J Mens Health 2019; 13:1557988319842973. [PMID: 30961458 PMCID: PMC6457029 DOI: 10.1177/1557988319842973] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2019] [Revised: 03/09/2019] [Accepted: 03/18/2019] [Indexed: 02/05/2023] Open
Abstract
Telomeres contain TTAGGG (T; Thymine, A; Adenine and G; Guanine) repetitive sequences and are placed at the end of human chromosomes. Telomere dysfunction is implicated in some age-related and chronic diseases, but its association with total serum lipids and obesity is unknown. Our objective was to determine influenced of total serum lipids on leukocyte telomere lengths (TLs). Participants were selected by cluster sampling from 22 districts of Tehran. The questionnaires were completed by 500 subjects and after the initial assessment in terms of lifestyle, nutrition, home, and job, 300 healthy people, aged 25-40 years were finally selected. TLs and serum level of total lipids were measured by quantitative real-time PCR and the Phillips method, respectively. The average telomere length (T/S) and total lipids were 1.05 ± 0.3 mg/dl and 643.3 ± 70.8 mg/dl, respectively. We found that a one unit difference in the following parameters were associated with kilo base pair differences in TL: Age -0.0002 (95% CI [-0.0022, -0.0018]), BMI -0.0019 (95% CI [-0.0003, -0.0034]), TC 0.0001 (95% CI [-0.0006, -0.0007]), TG -0.0010 (95% CI [-0.0015, -0.0004]), PL 0.0001 (95% CI [-0.0005, -0.0007]), and TSL -0.0003 (95% CI [-0.0008, 0.0001]). Spearman correlation analysis revealed an inverse relationship between TC (R = -0.53; 95% CI [-0.61, -0.44]), TG (R = -0.50; 95% CI [-0.58, -0.41]), PL (R = -0.46; 95% CI [-0.54-0.36]), and TSL (R = -0.63; 95% CI [-0.69, -0.56]) with T/S. Our research suggests that the inverse relationship was found between TL and weight, BMI, age, and TSL which were associated with obesity. High serum lipids concentration may be associated with systemic inflammation and atherosclerosis and may lead to oxidative stress, resulting in telomere shortening.
Collapse
Affiliation(s)
- Behrooz Karimi
- Department of Environmental Health
Engineering, School of Public Health, Arak University of Medical Sciences,
Iran
| | - Masud Yunesian
- Department of Environmental Health
Engineering, School of Public Health, Tehran University of Medical Sciences,
Iran
- Department of Research Methodology and
Data Analysis, Institute for Environmental Research (IER), Tehran University of
Medical Sciences, Iran
| | - Ramin Nabizadeh
- Department of Environmental Health
Engineering, School of Public Health, Tehran University of Medical Sciences,
Iran
- Department of Research Methodology and
Data Analysis, Institute for Environmental Research (IER), Tehran University of
Medical Sciences, Iran
| | - Parvin Mehdipour
- Department of Medical Genetics, School
of Medicine, Tehran University of Medical Sciences, Iran
| |
Collapse
|
9
|
Karimi B, Nabizadeh R, Yunesian M, Mehdipour P, Rastkari N, Aghaie A. Foods, Dietary Patterns and Occupational Class and Leukocyte Telomere Length in the Male Population. Am J Mens Health 2018; 12:479-492. [PMID: 29210325 PMCID: PMC5818128 DOI: 10.1177/1557988317743385] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Telomeres contain TTAGGG repetitive sequences and are located at the end of human chromosomes. Telomere dysfunction is associated with some age-related and chronic diseases, but its relationship with foods, dietary patterns, and occupational class in the young male population is not yet known. In this cross-sectional study, 300 healthy men, residents of Tehran, aged 25-40 years were enrolled from January to December 2016. We employed a cross-sectional study of 300 healthy people, residents of Tehran, aged 25-40 years. A food frequency questionnaire was used to obtain food intakes of all participants and converted into actual food intake (g/day). The principal components analysis was used to determine dietary patterns and other demographic characteristics. Leukocyte telomere length (TL) was measured by quantitative real-time polymerase chain reaction (PCR) to measure number of telomere repeat copy number (T) to the relative number of 36B4 copies (S) (T/S ratio). T/S in office-workers, waste recyclers, and other workers were 1.22 ± 0.4, 1.08 ± 0.3, and 1.094 ± 0.34, respectively. The results of multivariate linear regression adjusted for age, body mass index (BMI), and smoking were showed that whole grains (β = 0.02; p = .05), refined grains, fruits and vegetables, fish and dairy products were associated with an increase in log-T/S, but consumption of nuts and seeds (β = -0.00072; p = .06), meats (β = -0.00043; p = .9), produced meats (β = -0.00238; p = .03), oils and solid fats (β = -0.00146; p = .03) had a negative relationship with log-T/S in all studied occupational classes. A positive relationship was reported between the healthy (β = 0.017; p = .2) and traditional dietary pattern (β = 0.012; p = .4) with log-T/S, but western pattern identified negative relationship (β = -0.004; p = .7). Adherence to a healthy (with consumption whole grains, refined grains, dairy, and cereals) and then traditional pattern with increased consumption of fruits, vegetables and whole grains, fish and dairy products are necessary to prevent TL destruction in all studied occupational classes.
Collapse
Affiliation(s)
- Behrooz Karimi
- Department of Environmental Health Engineering, School of Public Health, Arak University of Medical Sciences, Arak, Iran
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ramin Nabizadeh
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Masud Yunesian
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
- Department of Research Methodology and Data Analysis, Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
- Masud Yunesian, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Enghelab St., Tehran, Iran.
| | - Parvin Mehdipour
- Department of Medical Genetics, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Noushin Rastkari
- Center for Air Pollution Research (CAPR), Institute for Environmental Research (IER), Tehran University of Medical Sciences, Tehran, Iran
| | - Afsaneh Aghaie
- Blood Transfusion Research Center, High Institute for Research and Education in Transfusion Medicine, Tehran, Iran
| |
Collapse
|