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Gold NM, Okeke MN, He Y. Involvement of Inheritance in Determining Telomere Length beyond Environmental and Lifestyle Factors. Aging Dis 2023:AD.2023.1023. [PMID: 37962459 DOI: 10.14336/ad.2023.1023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
All linear chromosomal ends have specific DNA-protein complexes called telomeres. Telomeres serve as a "molecular clock" to estimate the potential length of cell replication. Shortening of telomere length (TL) is associated with cellular senescence, aging, and various age-related diseases in humans. Here we reviewed the structure, function, and regulation of telomeres and the age-related diseases associated with telomere attrition. Among the various determinants of TL, we highlight the connection between TL and heredity to provide a new overview of genetic determinants for TL. Studies across multiple species have shown that maternal and paternal TL influence the TL of their offspring, and this may affect life span and their susceptibility to age-related diseases. Hence, we reviewed the linkage between TL and parental influences and the proposed mechanisms involved. More in-depth studies on the genetic mechanism for TL attrition are needed due to the potential application of this knowledge in human medicine to prevent premature frailty at its earliest stage, as well as promote health and longevity.
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Affiliation(s)
- Naheemat Modupeola Gold
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- State Key Laboratory of Genetic, Evolution and Animal Models, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Michael Ngozi Okeke
- University of Chinese Academy of Sciences, Beijing 100049, China
- Center for Nanomedical Technology Research, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Yonghan He
- Key Laboratory of Healthy Aging Research of Yunnan Province, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- State Key Laboratory of Genetic, Evolution and Animal Models, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, Yunnan, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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2
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Coetzee A, Hall DR, Conradie M. Hyperglycemia First Detected in Pregnancy in South Africa: Facts, Gaps, and Opportunities. FRONTIERS IN CLINICAL DIABETES AND HEALTHCARE 2022; 3:895743. [PMID: 36992779 PMCID: PMC10012101 DOI: 10.3389/fcdhc.2022.895743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 04/01/2022] [Indexed: 06/19/2023]
Abstract
This review contextualizes hyperglycemia in pregnancy from a South-African perspective. It aims to create awareness of the importance of hyperglycemia in pregnancy in low-middle-income countries. We address unanswered questions to guide future research on sub-Saharan African women with hyperglycemia first detected in pregnancy (HFDP). South African women of childbearing age have the highest prevalence of obesity in sub-Saharan Africa. They are predisposed to Type 2 diabetes (T2DM), the leading cause of death in South African women. T2DM remains undiagnosed in many African countries, with two-thirds of people living with diabetes unaware. With the South African health policy's increased focus on improving antenatal care, women often gain access to screening for non-communicable diseases for the first time in pregnancy. While screening practices and diagnostic criteria for gestational diabetes mellitus (GDM) differ amongst geographical areas in South Africa (SA), hyperglycemia of varying degrees is often first detected in pregnancy. This is often erroneously ascribed to GDM, irrespective of the degree of hyperglycemia and not overt diabetes. T2DM and GDM convey a graded increased risk for the mother and fetus during and after pregnancy, with cardiometabolic risk accumulating across the lifespan. Resource limitations and high patient burden have hampered the opportunity to implement accessible preventative care in young women at increased risk of developing T2DM in the broader public health system in SA. All women with HFDP, including those with true GDM, should be followed and undergo glucose assessment postpartum. In SA, studies conducted early postpartum have noted persistent hyperglycemia in a third of women after GDM. Interpregnancy care is advantageous and may attain a favourable metabolic legacy in these young women, but the yield of return following delivery is suboptimal. We review the current best evidence regarding HFDP and contextualize the applicability in SA and other African or low-middle-income countries. The review identifies gaps and shares pragmatic solutions regarding clinical factors that may improve awareness, identification, diagnosis, and management of women with HFDP.
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Affiliation(s)
- Ankia Coetzee
- Department of Medicine, Division of Endocrinology Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
| | - David R. Hall
- Department of Obstetrics and Gynecology, Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
| | - Magda Conradie
- Department of Medicine, Division of Endocrinology Stellenbosch University and Tygerberg Hospital, Cape Town, South Africa
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3
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Ito T, Saeki H, Guo X, Sysa-Shah P, Tamashiro KL, Lee RS, Ishiyama S, Orita H, Sato K, Brock MV, Gabrielson KL. Prenatal stress enhances atherosclerosis and telomere shortening in ApoE knockout mouse offspring. Am J Physiol Regul Integr Comp Physiol 2022; 323:R68-R80. [PMID: 35411811 DOI: 10.1152/ajpregu.00201.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Children born to women who experience stress during pregnancy have an increased risk of atherosclerosis in later life, but few animal models have explored mechanisms. To study this phenomena, timed-bred ApoE knockout mice were determined pregnant with ultrasound and randomly assigned on gestation day 8.5 to either a control (no stress) or prenatal stress (PS) group using two hours of restraint for five consecutive days. PS significantly increased plasma corticosterone levels in pregnant mice. The litters from PS mice showed increased neonatal mortality within the first week of life. Body weights (at euthanasia) of adult offspring at 25 weeks from the PS group were significantly increased compared to weights of controls. Adult offspring from these pregnancies were serially imaged with ultrasound to measure plaque thickness and were compared with plaque macro- and microscopic pathology. PS groups had increased plaques thickness by ultrasound, gross, histological evaluation and increased aortic root and valve macrophage infiltration at 25 weeks. Five-week old mice from PS group had significant decrease in mean arterial pressure, yet blood pressure normalized by 10 weeks. Since prenatal stress induced increased atherosclerosis, and telomeres are susceptible to stress, aortas from 10 week old mice were compared for telomere lengths and were found to be significantly shorter in PS mice compared to control mice. These studies support future investigation of how stress impacts telomere shortening in animal models and human aortas. This model could be further utilized to investigate the role of prenatal stress, telomere biology and atherosclerosis pathogenesis in adults.
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Affiliation(s)
- Tomoaki Ito
- Sidney Kimmel Cancer Center. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Surgery, Juntendo University Shizuoka Hospital, Juntendo University School of Medicine, Shizuoka, Japan, United States
| | - Harumi Saeki
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Human Pathology, Juntendo University School of Medicine, Tokyo, Japan, United States
| | - Xin Guo
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Polina Sysa-Shah
- Department of Urology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Kellie L Tamashiro
- Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Richard S Lee
- Department of Psychiatry and Behavioral Sciences, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Shun Ishiyama
- Sidney Kimmel Cancer Center. Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Department of Coloproctological Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Hajime Orita
- Department of Gastroenterology and Minimally Invasive Surgery, Juntendo University School of Medicine, Tokyo, Japan
| | - Koichi Sato
- Department of Surgery, Juntendo University Shizuoka Hospital, Juntendo University School of Medicine, Shizuoka, Japan, United States
| | - Malcolm V Brock
- Department of Surgery, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
| | - Kathleen L Gabrielson
- Department of Molecular and Comparative Pathobiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States.,Sidney Kimmel Cancer Center, Department of Oncology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
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4
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Stout-Oswald SA, Glynn LM, Bisoffi M, Demers CH, Davis EP. Prenatal exposure to maternal psychological distress and telomere length in childhood. Dev Psychobiol 2022; 64:e22238. [PMID: 35050506 DOI: 10.1002/dev.22238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/07/2021] [Accepted: 11/07/2021] [Indexed: 09/02/2023]
Abstract
Telomere length (TL) is a biological marker of cellular aging, and shorter TL in adulthood is associated with increased morbidity and mortality risk. It is likely that these differences in TL are established long before adulthood, and there is growing evidence that TL can reflect prenatal experiences. Although maternal prenatal distress predicts newborn TL, it is unknown whether the relation between prenatal exposure to maternal distress and child TL persists through childhood. The purpose of the current longitudinal, prospective study is to examine the relation between prenatal exposure to maternal distress (perceived stress, depressive symptoms, pregnancy-related anxiety) and TL in childhood. Participants included 102 children (54 girls) and their mothers. Mothers' distress was assessed five times during pregnancy, at 12 weeks postpartum, and at the time of child telomere measurement between 6 and 16 years of age. Maternal distress during pregnancy predicted shorter offspring TL in childhood, even after accounting for postnatal exposure to maternal distress and other covariates. These findings indicate that maternal mental health predicts offspring TL biology later in childhood than previously observed. This study bolsters claims that telomere biology is subject to fetal programming and highlights the importance of supporting maternal mental health during pregnancy.
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Affiliation(s)
| | - Laura M Glynn
- Department of Psychology, Chapman University, Orange, California, USA
| | - Marco Bisoffi
- Department of Psychology, Chapman University, Orange, California, USA
- Schmid College of Science and Technology, Chapman University, Orange, California, USA
- School of Pharmacy, Chapman University, Orange, California, USA
| | - Catherine H Demers
- Department of Psychology, University of Denver, Denver, Colorado, USA
- Department of Psychiatry, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Elysia Poggi Davis
- Department of Psychology, University of Denver, Denver, Colorado, USA
- Department of Pediatrics, University of California, Irvine, Irvine, California, USA
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Hahn MC, Werlang ICR, Rechenmacher C, Morais RVD, Barbé-Tuana FM, Grun LK, Guma FTCR, Silva CHD, Bernardi JR, Michalowski MB, Goldani MZ. Telomere length in healthy newborns is not affected by adverse intrauterine environments. Genet Mol Biol 2021; 44:e20200411. [PMID: 34874050 PMCID: PMC8647199 DOI: 10.1590/1678-4685-gmb-2020-0411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 03/26/2021] [Indexed: 11/22/2022] Open
Abstract
Different intrauterine exposures are associated with different metabolic profiles
leading to growth and development characteristics in children and also relate to
health and disease patterns in adult life. The objective of this work was to
evaluate the impact of four different intrauterine environments on the telomere
length of newborns. This is a longitudinal observational study using a
convenience sample of 222 mothers and their term newborns (>37 weeks of
gestational age) from hospitals in Porto Alegre, Rio Grande do Sul (Brazil),
from September 2011 to January 2016. Sample was divided into four groups:
pregnant women with Gestational Diabetes Mellitus (DM) (n=38), smoking pregnant
women (TOBACCO) (n=52), mothers with small-for-gestational age (SGA) children
due to idiopathic intrauterine growth restriction (n=33), and a control group
(n=99). Maternal and newborn genomic DNA were obtained from epithelial mucosal
cells. Telomere length was assessed by qPCR, with the calculation of the
telomere and single copy gene (T/S ratio). In this sample, there was no
significant difference in telomere length between groups (p>0.05). There was
also no association between childbirth weight and telomere length in children
(p>0.05). For term newborns different intrauterine environments seems not to
influence telomere length at birth.
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Affiliation(s)
- Monique Cabral Hahn
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil
| | - Isabel Cristina Ribas Werlang
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil
| | - Ciliana Rechenmacher
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil
| | - Rahuany Velleda de Morais
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Florencia María Barbé-Tuana
- Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Ciências Básicas da Saúde, Departamento de Bioquímica, Laboratório de Biologia Molecular e Bioinformática, Programa de Pós-Graduação em Bioquímica, Porto Alegre, RS, Brazil.,Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Escola de Ciências, Grupo de Inflamação e Senescência Celular, Porto Alegre, RS, Brazil.,Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Escola de Ciências, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil
| | - Lucas Kich Grun
- Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Ciências Básicas da Saúde, Departamento de Bioquímica, Laboratório de Biologia Molecular e Bioinformática, Programa de Pós-Graduação em Bioquímica, Porto Alegre, RS, Brazil.,Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Escola de Ciências, Grupo de Inflamação e Senescência Celular, Porto Alegre, RS, Brazil.,Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Escola de Ciências, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil
| | - Fátima Theresinha Costa Rodrigues Guma
- Universidade Federal do Rio Grande do Sul (UFRGS), Instituto de Ciências Básicas da Saúde, Departamento de Bioquímica, Laboratório de Biologia Molecular e Bioinformática, Programa de Pós-Graduação em Bioquímica, Porto Alegre, RS, Brazil.,Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Escola de Ciências, Grupo de Inflamação e Senescência Celular, Porto Alegre, RS, Brazil.,Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Escola de Ciências, Programa de Pós-Graduação em Biologia Celular e Molecular, Porto Alegre, RS, Brazil
| | - Clécio Homrich da Silva
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Departamento de Pediatria, Porto Alegre, RS, Brazil
| | - Juliana Rombaldi Bernardi
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Departamento de Pediatria, Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Alimentação, Nutrição e Saúde, Porto Alegre, RS, Brazil
| | - Mariana Bohns Michalowski
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Departamento de Pediatria, Porto Alegre, RS, Brazil
| | - Marcelo Zubaran Goldani
- Hospital de Clínicas de Porto Alegre, Laboratório de Pediatria Translacional, Núcleo de Estudos em Saúde da Criança e do Adolescente (NESCA), Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Programa de Pós-Graduação em Saúde da Criança e do Adolescente, Porto Alegre, RS, Brazil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Departamento de Pediatria, Porto Alegre, RS, Brazil
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Influence of Maternal Infection and Pregnancy Complications on Cord Blood Telomere Length. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:3339456. [PMID: 34616503 PMCID: PMC8487834 DOI: 10.1155/2021/3339456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Accepted: 08/31/2021] [Indexed: 11/17/2022]
Abstract
Background Exposure to suboptimal intrauterine environment might induce structural and functional changes that can affect neonatal health. Telomere length as an important indicator of cellular health has been associated with increased risk for disease development. Objectives This study was aimed to examine the independent and combined effects of maternal, obstetric, and foetal factors on cord blood telomere length (TL). Methods Pregnant women at the gestational age of 20th to 24th week who attended the antenatal clinic of a major local hospital in Hong Kong were recruited. Participants were asked to complete a questionnaire on demographics, health-related quality of life, and history of risk behaviors. Medical history including pregnancy complications and neonatal outcomes was obtained from electronic medical records of both mother and neonate. Umbilical cord blood was collected at delivery for TL determination. Results A total of 753 pregnant women (average age: 32.18 ± 4.51 years) were recruited. The prevalence of maternal infection, anaemia, and hypertension during pregnancy was 30.8%, 30.0%, and 6.0%, respectively. The adjusted regression model displayed that maternal infection was negatively associated with cord blood TL (β = -0.18, p = 0.026). This association became even stronger in the presence of antenatal anaemia, hypertension, delivery complications, or neonatal jaundice (β = -0.25 to -0.45). Conclusions This study consolidates evidence on the impact of adverse intrauterine environment at the cellular level. Maternal infection was significantly associated with shorter cord blood TL in a unique manner such that its presence may critically determine the susceptibility of telomere to other factors.
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The Relationships Between Prenatal Smoking Exposure and Telomere Lengths in Fetuses, Infants, and Children: A Systematic Literature Review. J Addict Nurs 2021; 31:243-252. [PMID: 33264196 DOI: 10.1097/jan.0000000000000364] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the relationships between prenatal smoking exposure and telomere lengths (TLs) in fetuses, infants, and children. METHODS This is a systematic review guided by the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Databases searched were Biomedical Reference Collection, MEDLINE via PubMed, CINAHL, PsycINFO, and Google Scholar. The latest search was on October 18, 2019. RESULTS Seven studies met the inclusion criteria and thus were reviewed. Five of the studies showed significant inverse relationships between prenatal tobacco exposure and TLs in fetuses, infants, and children. One study showed a modification effect of the postconceptual age, indicating that older fetuses with prenatal smoking exposure had shorter TLs than their counterparts. This effect was more prominent after 93 days of postconception. Another study reported a finding that was contrary to the above results, showing that the telomeres of newborns with prenatal smoking exposure were longer than those of their counterparts. CONCLUSION/RECOMMENDATIONS This review shows that the impact of prenatal smoking on the health of unborn fetuses, infants, and children is an understudied area. Because of the inconsistent findings and cross-sectional study designs, more research is required, especially longitudinally studies. Nonetheless, the findings of the review provide partial evidence that prenatal smoking can potentially impact the genetic biomarker, TLs, and, thus, health of fetuses, infants, and children. The evidence confirms the current practice that pregnant women should be encouraged to stop smoking as soon as they become pregnant.
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Vahter M, Broberg K, Harari F. Placental and Cord Blood Telomere Length in Relation to Maternal Nutritional Status. J Nutr 2020; 150:2646-2655. [PMID: 32678440 PMCID: PMC7549303 DOI: 10.1093/jn/nxaa198] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/27/2020] [Accepted: 06/18/2020] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND The uterine environment may be important for the chromosomal telomere length (TL) at birth, which, in turn, influences disease susceptibility throughout life. However, little is known about the importance of specific nutritional factors. OBJECTIVES We assessed the impact of multiple maternal nutritional factors on TL in placenta and cord blood. METHODS In a population-based mother-child cohort in northwestern Argentina, we measured maternal weight, BMI, body fat percentage (BFP), and several nutrients [selenium, magnesium, calcium, zinc, manganese, iodine, vitamin B-12, folate, 25-hydroxycholecalciferol (25(OH)D3)], hemoglobin, and homocysteine in maternal whole blood, serum, plasma, or urine during pregnancy (mean gestational week 27). We measured the relative TL (rTL) in placenta (n = 99) and cord blood (n = 98) at delivery by real-time PCR. Associations were evaluated by multivariable-adjusted linear regression. RESULTS The women's prepregnancy BMI (kg/m2; mean ± SD: 23.7 ± 4.1), body weight (55.4 ± 9.9 kg), and BFP (29.9 ± 5.5%), but not height (153 ± 5.3 cm), were inversely associated with placental rTL (P < 0.01 for all), with ∼0.5 SD shorter rTL for an IQR increase in prepregnancy body weight, BMI, or BFP. Also, impedance-based BFP, but not lean body mass, in the third trimester was associated with shorter placental rTL. In addition, serum vitamin B-12 (232 ± 96 pmol/L) in pregnancy (P = 0.038), but not folate or homocysteine, was associated with shorter placental rTL (0.2 SD for an IQR increase). In contrast, plasma 25(OH)D3 (46 ± 15 nmol/L) was positively associated with placental rTL (P < 0.01), which increased by 0.4 SD for an IQR increase in 25(OH)D3. No clear associations of the studied maternal nutritional factors were found with cord blood rTL. CONCLUSIONS Maternal BMI, BFP, and vitamin B-12 were inversely associated, whereas 25(OH)D3 was positively associated, with placental TL. No association was observed with cord blood TL. Future studies should elucidate the role of placental TL for child health.
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Affiliation(s)
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Florencia Harari
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden,Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital and University of Gothenburg, Gothenburg, Sweden
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Bibliometric Analysis of Research on Telomere Length in Children: A Review of Scientific Literature. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17124593. [PMID: 32604805 PMCID: PMC7345248 DOI: 10.3390/ijerph17124593] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 06/15/2020] [Accepted: 06/23/2020] [Indexed: 12/14/2022]
Abstract
Telomere length in early life has been recently associated with biological aging and development of negative consequences in later adult life. A relevant area of research has emerged to understand the factors that impact telomere length in children. We conducted a bibliometric analysis to track research output and identify global trends and gaps in the knowledge of telomere length in children. Bibliographic data were retrieved from the Web of Science database and then analyzed by using Bibliometrix R package. A total of 840 publications were yielded from 1991 to 2019. The references were prominently published in journals, with 20 high ranked journals contributing to 30% of literature on telomere length in children. The USA was the most productive country (35.7%), followed by Europe (12.1%), and Asia (11.9%). A knowledge map of telomere length in children through keyword analyses revealed that there were two potential main lines of research based on two different approaches: genomic research and epidemiological research. This study shows that telomere length in children is a topic of research that has gained significant relevance in the last decade. This bibliometric study may be helpful in identifying research trends and finding research hot spots and gaps in this research field.
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Suh DI, Kang MJ, Park YM, Lee JK, Lee SY, Sheen YH, Kim KW, Ahn K, Won HS, Lee MY, Choi SJ, Kwon JY, Park HJ, Jun JK, Hong SJ, Koh YY. Leukocyte Telomere Length Reflects Prenatal Stress Exposure, But Does Not Predict Atopic Dermatitis Development at 1 Year. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2019; 11:357-366. [PMID: 30912325 PMCID: PMC6439183 DOI: 10.4168/aair.2019.11.3.357] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 01/01/2019] [Accepted: 01/02/2019] [Indexed: 12/17/2022]
Abstract
Purpose Prenatal maternal stress affects offspring's atopic dermatitis (AD) development, which is thought to be mediated by the oxidative stress. We aimed to evaluate the difference in leukocyte telomere length (LTL), a marker for exposure to oxidative stress, according to the prenatal stress exposure and the later AD development. Methods From a birth cohort (the COhort for Childhood Origin of Asthma and allergic diseases) that had displayed a good epidemiologic association between the exposure to prenatal stress and AD development in the offspring, we selected 68 pairs of samples from 4 subject groups based on the level of prenatal maternal stress and later AD development. The LTL was measured from both cord blood and 1-year peripheral blood, and their LTLs were compared between subject groups. Finally, the proportion of AD development was examined in the subject groups that are reclassified based on subjects' exposure to prenatal stress and there LTL. Results Cord-blood LTL was shorter in prenatally stressed infants than in unstressed ones (P = 0.026), which difference was still significant when subjects became 1 year old (P = 0.008). LTL of cord blood, as well as one of the 1-year peripheral blood, was not different according to later AD development at 1 year (P = 0.915 and 0.174, respectively). Shorter LTL made no increase in the proportion of later AD development in either prenatally high-stressed or low-stressed groups (P = 1.000 and 0.473, respectively). Conclusions Cord-blood LTL may reflect subjects' exposure to maternal prenatal stress. However, the LTL shortening is not a risk factor of increasing AD development until the age of 1, and a longer investigation may be necessary for validation. Currently, the results doubt the role of LTL shortening as a marker for risk assessment tool for the prenatal stress associated with AD development in the offspring.
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Affiliation(s)
- Dong In Suh
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Mi Jin Kang
- Department of Pediatrics, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Yoon Mee Park
- Department of Pediatrics, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - Jun Kyu Lee
- Department of Pediatrics, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea
| | - So Yeon Lee
- Department of Pediatrics, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea.,Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Youn Ho Sheen
- Department of Pediatrics, CHA University Gangnam CHA Hospital, Seoul, Korea
| | - Kyung Won Kim
- Department of Pediatrics, Yonsei University Severance Children's Hospital, Seoul, Korea
| | - Kangmo Ahn
- Department of Pediatrics, Sungkyunkwan University Samsung Medical Center, Seoul, Korea
| | - Hye Sung Won
- Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Mi Young Lee
- Department of Obstetrics and Gynecology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Suk Joo Choi
- Department of Obstetrics and Gynecology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ja Young Kwon
- Department of Obstetrics and Gynecology, Yonsei University College of Medicine, Seoul, Korea
| | - Hee Jin Park
- Department of Obstetrics and Gynecology, Gangnam CHA Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Jong Kwan Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Soo Jong Hong
- Department of Pediatrics, Asan Institute for Life Sciences, University of Ulsan College of Medicine, Seoul, Korea.,Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
| | - Young Yull Koh
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea.
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