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Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents
OBJECTIVES: To (1) describe the epidemiology of child and adult telomere length, and (2) investigate parent–child telomere length concordance. DESIGN: Population-based cross-sectional study within the Longitudinal Study of Australian Children. SETTING: Assessment centres in seven major Australian ci...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BMJ Publishing Group
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6624044/ https://www.ncbi.nlm.nih.gov/pubmed/31273022 http://dx.doi.org/10.1136/bmjopen-2017-020263 |
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author | Nguyen, Minh Thien Lycett, Kate Vryer, Regan Burgner, David P Ranganathan, Sarath Grobler, Anneke C Wake, Melissa Saffery, Richard |
author_facet | Nguyen, Minh Thien Lycett, Kate Vryer, Regan Burgner, David P Ranganathan, Sarath Grobler, Anneke C Wake, Melissa Saffery, Richard |
author_sort | Nguyen, Minh Thien |
collection | PubMed |
description | OBJECTIVES: To (1) describe the epidemiology of child and adult telomere length, and (2) investigate parent–child telomere length concordance. DESIGN: Population-based cross-sectional study within the Longitudinal Study of Australian Children. SETTING: Assessment centres in seven major Australian cities and eight selected regional towns; February 2015 to March 2016. PARTICIPANTS: Of 1874 participating families, telomere data were available for analysis for 1206 children and 1343 parents, of whom 1143 were parent–child pairs. There were 589 boys and 617 girls; 175 fathers and 1168 mothers. OUTCOME MEASURES: Relative telomere length (T/S ratio), calculated by comparing telomeric DNA (T) level with the single copy (S) beta-globin gene in venous blood-derived genomic DNA by quantitative real-time PCR. RESULTS: Mean T/S ratio for all children, boys and girls was 1.09 (SD 0.56), 1.05 (SD 0.53) and 1.13 (SD 0.59), respectively. Mean T/S ratio for all parents, fathers and mothers was 0.81 (SD 0.37), 0.82 (SD 0.36) and 0.81 (SD 0.38), respectively. Parent–child T/S ratio concordance was moderate (correlation 0.24). In adjusted regression models, one unit higher parent T/S ratio was associated with 0.36 (estimated linear regression coefficient (β); 95% CI 0.28 to 0.45) higher child T/S ratio. Concordance was higher in the youngest parent-age tertile (β 0.49; 95% CI 0.34 to 0.64) compared with the middle (β 0.35; 95% CI 0.21 to 0.48) and oldest tertile (β 0.26; 95% CI 0.11 to 0.41; p-trend 0.04). Father–child concordance was 0.34 (95% CI 0.18 to 0.48), while mother–child was 0.22 (95% CI 0.17 to 0.28). CONCLUSIONS: We provide telomere length population values for children aged 11–12 years and their mid-life parents. Relative telomere length was shorter in adults than children, as expected. There was modest evidence of parent–child concordance, which diminished with increasing parent age. |
format | Online Article Text |
id | pubmed-6624044 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | BMJ Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-66240442019-07-28 Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents Nguyen, Minh Thien Lycett, Kate Vryer, Regan Burgner, David P Ranganathan, Sarath Grobler, Anneke C Wake, Melissa Saffery, Richard BMJ Open Childcheckpoint Series OBJECTIVES: To (1) describe the epidemiology of child and adult telomere length, and (2) investigate parent–child telomere length concordance. DESIGN: Population-based cross-sectional study within the Longitudinal Study of Australian Children. SETTING: Assessment centres in seven major Australian cities and eight selected regional towns; February 2015 to March 2016. PARTICIPANTS: Of 1874 participating families, telomere data were available for analysis for 1206 children and 1343 parents, of whom 1143 were parent–child pairs. There were 589 boys and 617 girls; 175 fathers and 1168 mothers. OUTCOME MEASURES: Relative telomere length (T/S ratio), calculated by comparing telomeric DNA (T) level with the single copy (S) beta-globin gene in venous blood-derived genomic DNA by quantitative real-time PCR. RESULTS: Mean T/S ratio for all children, boys and girls was 1.09 (SD 0.56), 1.05 (SD 0.53) and 1.13 (SD 0.59), respectively. Mean T/S ratio for all parents, fathers and mothers was 0.81 (SD 0.37), 0.82 (SD 0.36) and 0.81 (SD 0.38), respectively. Parent–child T/S ratio concordance was moderate (correlation 0.24). In adjusted regression models, one unit higher parent T/S ratio was associated with 0.36 (estimated linear regression coefficient (β); 95% CI 0.28 to 0.45) higher child T/S ratio. Concordance was higher in the youngest parent-age tertile (β 0.49; 95% CI 0.34 to 0.64) compared with the middle (β 0.35; 95% CI 0.21 to 0.48) and oldest tertile (β 0.26; 95% CI 0.11 to 0.41; p-trend 0.04). Father–child concordance was 0.34 (95% CI 0.18 to 0.48), while mother–child was 0.22 (95% CI 0.17 to 0.28). CONCLUSIONS: We provide telomere length population values for children aged 11–12 years and their mid-life parents. Relative telomere length was shorter in adults than children, as expected. There was modest evidence of parent–child concordance, which diminished with increasing parent age. BMJ Publishing Group 2019-07-04 /pmc/articles/PMC6624044/ /pubmed/31273022 http://dx.doi.org/10.1136/bmjopen-2017-020263 Text en © Author(s) (or their employer(s)) 2019. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/. |
spellingShingle | Childcheckpoint Series Nguyen, Minh Thien Lycett, Kate Vryer, Regan Burgner, David P Ranganathan, Sarath Grobler, Anneke C Wake, Melissa Saffery, Richard Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents |
title | Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents |
title_full | Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents |
title_fullStr | Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents |
title_full_unstemmed | Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents |
title_short | Telomere length: population epidemiology and concordance in Australian children aged 11–12 years and their parents |
title_sort | telomere length: population epidemiology and concordance in australian children aged 11–12 years and their parents |
topic | Childcheckpoint Series |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6624044/ https://www.ncbi.nlm.nih.gov/pubmed/31273022 http://dx.doi.org/10.1136/bmjopen-2017-020263 |
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