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Dickinson Y, Boehni R, Obeid R, Knapp JP, Moser R, Lewandowski AJ, Douglas G, Leeson P, Channon KM, Chuaiphichai S. Novel Role of 5-Methyl-(6S)-Tetrahydrofolate in Mediating Endothelial Cell Tetrahydrobiopterin in Pregnancy and Implications for Gestational Hypertension. Hypertension 2024; 81:1910-1923. [PMID: 39041246 PMCID: PMC11319083 DOI: 10.1161/hypertensionaha.124.22838] [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: 02/07/2024] [Accepted: 06/24/2024] [Indexed: 07/24/2024]
Abstract
BACKGROUND Folate intake during pregnancy is essential for fetal development and maternal health. However, the specific effects of folic acid (FA) and 5-methyl-(6S)-tetrahydrofolate (5-MTHF) on the prevention and treatment of hypertensive disorders of pregnancy remain unclear. We investigated whether FA and 5-MTHF have different effects on endothelial cell tetrahydrobiopterin (BH4) metabolism in pregnancy and the possible consequences for endothelial NO generation, maternal blood pressure, and fetal growth. METHODS We analyzed the maternal blood pressure in pregnant wild-type (Gch1fl/fl) and Gch1fl/fl Tie2cre mice treated with either FA or 5-MTHF starting before pregnancy, mid-pregnancy or late pregnancy. BH4, superoxide, and NO bioavailability were determined in mouse and human models of endothelial cell BH4 deficiency by high-performance liquid chromatography. RESULTS In vitro studies in mouse and human endothelial cells showed that treatment with 5-MTHF, but not FA, elevated BH4 levels, reduced superoxide production, and increased NO synthase activity. In primary endothelial cells isolated from women with hypertensive pregnancies, exposure to 5-MTHF, but not FA, restored the reduction in BH4 levels and NO synthase activity. In vivo studies in mice revealed that oral treatment with 5-MTHF, but not FA, prevented and treated hypertension in pregnancy when administered either before or during pregnancy, respectively, and normalized placental and fetal growth restriction if administered from mid-gestation onward. CONCLUSIONS Collectively, these studies identify a critical role for 5-MTHF in endothelial cell function in pregnancy, related to endothelial cell BH4 availability and NO synthase activity. Thus, 5-MTHF represents a novel therapeutic agent that may potentially improve endothelial function in hypertensive disorders of pregnancy by targeting endothelial cell BH4.
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Affiliation(s)
- Yasmin Dickinson
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine (Y.D., G.D., K.M.C., S.C.)
| | - Ruth Boehni
- University of Oxford, United Kingdom. Merck & Cie KmG Schaffhausen, Switzerland (R.B., J.-P.K., R.M.)
| | - Rima Obeid
- Department of Clinical Chemistry and Laboratory Medicine, Saarland University Hospital Homburg, Saar, Germany (R.O.)
| | - Jean-Pierre Knapp
- University of Oxford, United Kingdom. Merck & Cie KmG Schaffhausen, Switzerland (R.B., J.-P.K., R.M.)
| | - Rudolf Moser
- University of Oxford, United Kingdom. Merck & Cie KmG Schaffhausen, Switzerland (R.B., J.-P.K., R.M.)
| | | | - Gillian Douglas
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine (Y.D., G.D., K.M.C., S.C.)
| | - Paul Leeson
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine (P.L.)
| | - Keith M. Channon
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine (Y.D., G.D., K.M.C., S.C.)
| | - Surawee Chuaiphichai
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine (Y.D., G.D., K.M.C., S.C.)
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Renlund-Vikström M, Jääskeläinen TJ, Kivelä A, Heinonen S, Laivuori H, Sarkola T. Cardiac Structure and Function in 8- to 12-Year-Old Children Following In-Utero Exposure to Preeclampsia (FINNCARE Study). J Am Heart Assoc 2024; 13:e034494. [PMID: 39011963 DOI: 10.1161/jaha.124.034494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Accepted: 05/20/2024] [Indexed: 07/17/2024]
Abstract
BACKGROUND We evaluated how elevated blood pressure in children exposed to preeclampsia (PE) impacted on their cardiac structure and function, as well as relations with maternal, gestational, and perinatal factors and child body size and composition. METHODS AND RESULTS A total of 182 PE (46 early-onset preeclampsia) and 85 unexposed (non-PE) children were examined in the FINNCARE study 8 to 12 years after the index pregnancy with echocardiography; office, central, and 24-hour ambulatory blood pressures; and body anthropometrics and composition. PE children had lower right ventricular basal sphericity index (mean difference, -0.26 95% CI, -0.39 to -0.12) and lower mitral lateral E'-wave peak velocity (-1.4 cm/s [95% CI, -2.1 to -0.6]), as well as higher E to E' ratio (0.40 [95% CI, 0.15-0.65]) and indexed tricuspid annular plane systolic excursion (0.03 [95% CI, 0.01-0.05]) compared with non-PE children. These differences were accentuated in early-onset PE children. Left ventricular mass (LVM) or left atrial volume were not different between PE and non-PE children. Lean body mass, body fat percentage, and 24-hour systolic blood pressure were independent predictors of LVM. Lean body mass and body fat percentage were independent predictors of left atrial volume. No significant associations between LVM or left atrial volume and maternal, gestational, or perinatal parameters were found. CONCLUSIONS Preadolescent PE children display a more globular-shaped right ventricle with higher longitudinal systolic displacement as well as mildly altered diastolic indices, with the alterations being pronounced in early-onset preeclampsia. Lean body mass and adiposity are independently related with LVM and left atrial volume, and systolic blood pressure with LVM in both PE and non-PE children. These unfavorable associations indicate remodeling of cardiac structure in young children also reflected in mild functional changes in PE children. REGISTRATION URL: https://www.clinicaltrials.gov; unique identifier: NCT04676295.
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Affiliation(s)
- Michelle Renlund-Vikström
- Children's Hospital University of Helsinki and Helsinki University Hospital Helsinki Finland
- Minerva Foundation Institute for Medical Research Helsinki Finland
| | - Tiina J Jääskeläinen
- Medical and Clinical Genetics University of Helsinki and Helsinki University Hospital Helsinki Finland
- Department of Food and Nutrition University of Helsinki Helsinki Finland
| | - Anni Kivelä
- Medical and Clinical Genetics University of Helsinki and Helsinki University Hospital Helsinki Finland
| | - Seppo Heinonen
- Department of Obstetrics and Gynecology Helsinki University Hospital Helsinki Finland
| | - Hannele Laivuori
- Medical and Clinical Genetics University of Helsinki and Helsinki University Hospital Helsinki Finland
- Department of Obstetrics and Gynecology Tampere University Hospital and Tampere University, Faculty of Medicine and Health Technology, Tampere Center for Child, Adolescent, and Maternal Health Research Tampere Finland
| | - Taisto Sarkola
- Children's Hospital University of Helsinki and Helsinki University Hospital Helsinki Finland
- Minerva Foundation Institute for Medical Research Helsinki Finland
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Burden SJ, Alshehri R, Lamata P, Poston L, Taylor PD. Maternal obesity and offspring cardiovascular remodelling - the effect of preconception and antenatal lifestyle interventions: a systematic review. Int J Obes (Lond) 2024; 48:1045-1064. [PMID: 38898228 PMCID: PMC11281905 DOI: 10.1038/s41366-024-01536-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 05/02/2024] [Indexed: 06/21/2024]
Abstract
BACKGROUND Preconception or antenatal lifestyle interventions in women with obesity may prevent adverse cardiovascular outcomes in the child, including cardiac remodelling. We undertook a systematic review of the existing data to examine the impact of randomised controlled trials of lifestyle interventions in pregnant women with obesity on offspring cardiac remodelling and related parameters of cardiovascular health. METHODS This review was registered with PROSPERO (CRD42023454762) and aligns with PRISMA guidelines. PubMed, Embase, and previous reviews were systematically searched. Follow-up studies from randomised trials of lifestyle interventions in pregnant women with obesity, which included offspring cardiac remodelling or related cardiovascular parameters as outcome measures, were included based on pre-defined inclusion criteria. RESULTS Eight studies from five randomised controlled trials were included after screening 3252 articles. Interventions included antenatal exercise (n = 2), diet and physical activity (n = 2), and preconception diet and physical activity (n = 1). Children were <2-months to 3-7-years-old, with sample sizes ranging between n = 18-404. Reduced cardiac remodelling, with reduced interventricular septal wall thickness, was consistently reported. Some studies identified improved systolic and diastolic function and a reduced resting heart rate. Risk of bias analyses rated all studies as 'fair' (some risk of bias). A high loss-to-follow-up was a common limitation. CONCLUSION Although there is some evidence to suggest that lifestyle interventions in women with obesity may limit offspring cardiac remodelling, further high-quality longitudinal studies with larger sample sizes are required to confirm these observations and to determine whether these changes persist to adulthood. Child offspring cardiovascular health benefits of preconception and antenatal lifestyle interventions in women with obesity.
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Affiliation(s)
- Samuel J Burden
- Department of Women and Children's Health, School of Life Course & Population Sciences, King's College London, London, UK.
| | - Rahaf Alshehri
- Cardiovascular Medicine and Science Research, School of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK
| | - Pablo Lamata
- Biomedical Engineering, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Lucilla Poston
- Department of Women and Children's Health, School of Life Course & Population Sciences, King's College London, London, UK
| | - Paul D Taylor
- Department of Women and Children's Health, School of Life Course & Population Sciences, King's College London, London, UK
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Odackal NJ, Crume M, Naik T, Stiver C. Cardiac Development and Related Clinical Considerations. Neoreviews 2024; 25:e401-e414. [PMID: 38945970 DOI: 10.1542/neo.25-7-e401] [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: 01/03/2024] [Revised: 02/27/2024] [Accepted: 03/06/2024] [Indexed: 07/02/2024]
Abstract
The anatomy, physiology, and hemodynamics of the premature heart vary along the range of gestational ages cared for in neonatal intensive care units, from 22 weeks to term gestation. Clinical management of the preterm neonate should account for this heterogenous development. This requires an understanding of the impact of ex utero stressors on immature and disorganized cardiac tissue, the different state of hemodynamics across intracardiac shunts impacting the natural transition from fetal to neonatal life, and the effects of intensive pharmacologic and non-pharmacologic interventions that have systemic consequences influencing cardiac function. This article provides a review of the increasing but still limited body of literature on the anatomy, hemodynamics, and electrophysiology of the preterm heart with relevant clinical considerations.
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Affiliation(s)
- Namrita J Odackal
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH
- Division of Neonatology, Nationwide Children's Hospital, Columbus, OH
| | - Mary Crume
- Division of Neonatology, Nationwide Children's Hospital, Columbus, OH
| | - Tanvi Naik
- Center for Perinatal Research, Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH
| | - Corey Stiver
- Department of Pediatrics, The Ohio State University College of Medicine, Columbus, OH
- Division of Cardiology, Nationwide Children's Hospital, Columbus, OH
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Murillo C, Rueda C, Larroya M, Boada D, Grau L, Ponce J, Herranz A, Gómez O, Ferrero S, Andreu-Fernández V, Gratacós E, Crispi F, Palacio M, Cobo T. Intra-amniotic infection and/or inflammation is associated with fetal cardiac concentric hypertrophy and diastolic dysfunction in preterm labor and preterm prelabor rupture of membranes. Am J Obstet Gynecol 2024; 230:665.e1-665.e30. [PMID: 38290925 DOI: 10.1016/j.ajog.2023.10.017] [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: 05/18/2023] [Revised: 09/29/2023] [Accepted: 10/08/2023] [Indexed: 02/01/2024]
Abstract
BACKGROUND Preterm delivery is associated with cardiovascular remodeling and dysfunction in children and adults. However, it is unknown whether these effects are caused by the neonatal consequences of preterm birth or if these are already present in utero. OBJECTIVE We evaluated fetal cardiac morphology and function in fetuses of mothers admitted for preterm labor or preterm prelabor rupture of membranes and the association of these changes with the presence of intra-amniotic infection and/or inflammation. STUDY DESIGN In this prospective cohort study, fetal echocardiography and amniocentesis were performed at admission in singleton pregnant women with preterm labor and/or preterm prelabor rupture of membranes between 24.0 and 34.0 weeks' gestation with (intra-amniotic infection and/or inflammation group, n=41) and without intra-amniotic infection and/or inflammation (non-intra-amniotic infection and/or inflammation, n=54). Controls (n=48) were outpatient pregnant women without preterm labor or preterm prelabor rupture of membranes. Intra-amniotic infection was defined by a positive amniotic fluid culture or positive 16S ribosomal RNA gene. Intra-amniotic inflammation was defined by using the amniotic fluid interleukin-6 cutoff levels previously reported by our group being >1.43 ng/mL in preterm prelabor rupture of membranes and >13.4 ng/mL in preterm labor. Fetal cardiac morphology and function was evaluated using echocardiography, and troponin-I and N-terminal pro-brain natriuretic peptide concentrations were measured in amniotic fluid from women with preterm labor or preterm prelabor rupture of membranes and compared with 20 amniotic fluid Biobank samples obtained for reasons other than preterm labor or preterm prelabor rupture of membranes or cardiac pathology. The data were adjusted for the estimated fetal weight below the 10th percentile and for preterm prelabor rupture of membranes at admission and also for gestational age at amniocentesis when amniotic fluid biomarkers were compared. RESULTS From 2018 to 2021, 143 fetuses were included; 95 fetuses were from mothers admitted with a diagnosis of preterm labor or preterm prelabor rupture of membranes, and among those, 41 (28.7%) were in the intra-amniotic infection and/or inflammation group and 54 (37.8%) were in the non-intra-amniotic infection and/or inflammation group. A total of 48 (33.6%) fetuses were included in the control group. Fetuses with preterm labor and/or preterm prelabor rupture of membranes had signs of subclinical cardiac concentric hypertrophy (median left wall thickness of 0.93 [interquartile range, 0.72-1.16] in the intra-amniotic infection and/or inflammation group; 0.79 [0.66-0.92] in the non-intra-amniotic infection and/or inflammation group; and 0.69 [0.56-0.83] in controls; P<.001) and diastolic dysfunction (tricuspid A duration 0.23 seconds [0.21-0.25], 0.24 [0.22-0.25], and 0.21 [0.2-0.23]; P=.007). Systolic function was similar among groups. Higher values of amniotic fluid troponin I (1413 pg/mL [927-2334], 1190 [829-1636], and 841 [671-959]; P<.001) and N-terminal pro-brain natriuretic peptide were detected (35.0%, 17%, and 0%; P=.005) in fetuses with preterm labor or preterm prelabor rupture of membranes when compared with the control group. The highest N-terminal pro-brain natriuretic peptide concentrations were found in the intra-amniotic infection and/or inflammation group. CONCLUSION Fetuses with preterm labor or preterm prelabor rupture of membranes showed signs of cardiac remodeling and subclinical dysfunction, which were more pronounced in those exposed to intra-amniotic infection and/or inflammation. These findings support that the cardiovascular effects observed in children and adults born preterm have, at least in part, a prenatal origin.
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Affiliation(s)
- Clara Murillo
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain
| | - Claudia Rueda
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain
| | - Marta Larroya
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain
| | - David Boada
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain
| | - Laia Grau
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain
| | - Júlia Ponce
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain
| | - Ana Herranz
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain
| | - Olga Gómez
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain; Center for Biomedical Research on Rare Diseases (CIBER-ER), Instituto Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Silvia Ferrero
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain
| | - Vicente Andreu-Fernández
- Biosanitary Research Institute, Valencian International University (VIU), Valencia, Spain. Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain
| | - Eduard Gratacós
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain; Center for Biomedical Research on Rare Diseases (CIBER-ER), Instituto Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Fàtima Crispi
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain; Center for Biomedical Research on Rare Diseases (CIBER-ER), Instituto Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Montse Palacio
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain; Center for Biomedical Research on Rare Diseases (CIBER-ER), Instituto Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Teresa Cobo
- BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine, Hospital Clinic and Hospital Sant Joan de Déu, Institut Clínic de Ginecología, Obstetrícia I Neonatología, Fetal i+D Fetal Medicine Research Center, Barcelona, Spain; Fundació de Recerca Clínica Barcelona - Institut d'Investigacions Biomèdiques August Pi I Sunyer (IIS-FRCB-IDIBAPS), Universitat de Barcelona. Barcelona, Spain; Center for Biomedical Research on Rare Diseases (CIBER-ER), Instituto Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain.
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Savio F, Sirico D, Mazzon G, Bonadies L, Guiducci S, Nardo D, Salvadori S, Avesani M, Castaldi B, Baraldi E, Di Salvo G. Cardiac Mechanics Evaluation in Preschool-Aged Children with Preterm Birth History: A Speckle Tracking and 4D Echocardiography Study. J Clin Med 2024; 13:2762. [PMID: 38792304 PMCID: PMC11122247 DOI: 10.3390/jcm13102762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/10/2024] [Accepted: 05/03/2024] [Indexed: 05/26/2024] Open
Abstract
Background: The premature-born adult population is set to grow significantly, and prematurity has emerged as an important cardiovascular risk factor. We aimed to comprehensively assess cardiac mechanics and function in a cohort of ex-preterm preschoolers. Methods: Ex-preterm children (<30 weeks of gestation), aged 2 to 5 years, underwent transthoracic 2D, speckle-tracking, and 4D echocardiography. The findings were compared with 19 full-term children. Results: Our cohort of 38 children with prematurity history showed a normal morpho-functional echocardiographic assessment. However, compared to controls, the indexed 3D end-diastolic volumes of ventricular chambers were reduced (left ventricle 58.7 ± 11.2 vs. 67.2 ± 8.5 mL/m2; right ventricle 50.3 ± 10.4 vs. 57.7 ± 11 mL/m2; p = 0.02). Left ventricle global and longitudinal systolic function were worse in terms of fraction shortening (32.9% ± 6.8 vs. 36.5% ± 5.4; p = 0.05), ejection fraction (59.2% ± 4.3 vs. 62.3% ± 3.7; p = 0.003), and global longitudinal strain (-23.6% ± 2.4 vs. -25.5% ± 1.7; p = 0.003). Finally, we found a reduced left atrial strain (47.4% ± 9.7 vs. 54.9% ± 6.8; p = 0.004). Conclusions: Preschool-aged ex-preterm children exhibited smaller ventricles and subclinical impairment of left ventricle systolic and diastolic function compared to term children. Long-term follow-up is warranted to track the evolution of these findings.
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Affiliation(s)
- Federica Savio
- Neonatal Intensive Care Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (F.S.); (S.G.); (D.N.); (S.S.); (E.B.)
| | - Domenico Sirico
- Pediatric and Congenital Cardiology Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (G.M.); (M.A.); (B.C.); (G.D.S.)
| | - Giada Mazzon
- Pediatric and Congenital Cardiology Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (G.M.); (M.A.); (B.C.); (G.D.S.)
| | - Luca Bonadies
- Neonatal Intensive Care Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (F.S.); (S.G.); (D.N.); (S.S.); (E.B.)
| | - Silvia Guiducci
- Neonatal Intensive Care Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (F.S.); (S.G.); (D.N.); (S.S.); (E.B.)
| | - Daniel Nardo
- Neonatal Intensive Care Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (F.S.); (S.G.); (D.N.); (S.S.); (E.B.)
| | - Sabrina Salvadori
- Neonatal Intensive Care Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (F.S.); (S.G.); (D.N.); (S.S.); (E.B.)
| | - Martina Avesani
- Pediatric and Congenital Cardiology Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (G.M.); (M.A.); (B.C.); (G.D.S.)
| | - Biagio Castaldi
- Pediatric and Congenital Cardiology Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (G.M.); (M.A.); (B.C.); (G.D.S.)
| | - Eugenio Baraldi
- Neonatal Intensive Care Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (F.S.); (S.G.); (D.N.); (S.S.); (E.B.)
| | - Giovanni Di Salvo
- Pediatric and Congenital Cardiology Unit, Department for Women and Children’s Health, University Hospital of Padova, 35128 Padua, Italy; (G.M.); (M.A.); (B.C.); (G.D.S.)
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Kamenshchyk A, Belenichev I, Oksenych V, Kamyshnyi O. Combined Pharmacological Modulation of Translational and Transcriptional Activity Signaling Pathways as a Promising Therapeutic Approach in Children with Myocardial Changes. Biomolecules 2024; 14:477. [PMID: 38672493 PMCID: PMC11047929 DOI: 10.3390/biom14040477] [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: 02/09/2024] [Revised: 03/29/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Myocardial hypertrophy is the most common condition that accompanies heart development in children. Transcriptional gene expression regulating pathways play a critical role both in cardiac embryogenesis and in the pathogenesis of congenital hypertrophic cardiomyopathy, neonatal posthypoxic myocardial hypertrophy, and congenital heart diseases. This paper describes the state of cardiac gene expression and potential pharmacological modulators at different transcriptional levels. An experimental model of perinatal cardiac hypoxia showed the downregulated expression of genes responsible for cardiac muscle integrity and overexpressed genes associated with energy metabolism and apoptosis, which may provide a basis for a therapeutic approach. Current evidence suggests that RNA drugs, theaflavin, neuraminidase, proton pumps, and histone deacetylase inhibitors are promising pharmacological agents in progressive cardiac hypertrophy. The different points of application of the above drugs make combined use possible, potentiating the effects of inhibition in specific signaling pathways. The special role of N-acetyl cysteine in both the inhibition of several signaling pathways and the reduction of oxidative stress was emphasized.
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Affiliation(s)
- Andrii Kamenshchyk
- Department of Hospital Pediatrics, Zaporizhzhya State Medical and Pharmaceutical University, 69035 Zaporizhzhya, Ukraine
| | - Igor Belenichev
- Department of Pharmacology, Zaporizhzhya State Medical and Pharmaceutical University, 69035 Zaporizhzhya, Ukraine;
| | - Valentyn Oksenych
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, 5020 Bergen, Norway
| | - Oleksandr Kamyshnyi
- Department of Microbiology, Virology and Immunology, I. Horbachevsky Ternopil State Medical University, 46001 Ternopil, Ukraine;
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Reyes-Hernandez ME, Bischoff AR, Giesinger RE, Rios DR, Stanford AH, McNamara PJ. Echocardiography Assessment of Left Ventricular Function in Extremely Preterm Infants, Born at Less Than 28 Weeks' Gestation, With Bronchopulmonary Dysplasia and Systemic Hypertension. J Am Soc Echocardiogr 2024; 37:237-247. [PMID: 37619910 DOI: 10.1016/j.echo.2023.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/26/2023]
Abstract
BACKGROUND The survival of smaller and more immature premature infants has been associated with lifelong cardiorespiratory comorbidities. Infants with bronchopulmonary dysplasia (BPD) undergo routine screening echocardiography to evaluate for development of chronic pulmonary hypertension, a late manifestation of pulmonary vascular disease. METHODS Our aim was to evaluate left ventricular (LV) performance in infants with BPD and pulmonary vascular disease who developed systemic hypertension. We hypothesized that infants with hypertension were more likely to have impaired LV performance. We present a single-center cross-sectional study of premature infants born at less than 28 0/7 weeks' gestational age with a clinical diagnosis of BPD. Infants were categorized by the systolic arterial pressure (SAP) at time of echocardiography as hypertensive (SAP ≥90 mm Hg) or normotensive (SAP <90 mm Hg). Sixty-four patients were included. RESULTS Infants with hypertension showed altered LV diastolic function with prolonged tissue Doppler imaging-derived isovolumic relaxation time (54.2 ± 5.1 vs 42.9 ± 8.2, P < .001), lower E:A, and higher E:e'. Indices of left heart volume/pressure loading (left atrium:aorta and LV end-diastolic volume [6.1 ± 2 vs 4.2 ± 1.2, P < .001]) were also higher in the hypertensive group. Finally, infants in the hypertensive group had higher pulmonary vascular resistance index (4.42 ± 1.1 vs 3.69 ± 0.8, P = .004). CONCLUSIONS We conclude that extremely preterm infants with BPD who develop systemic hypertension are at risk of abnormal LV diastolic dysfunction. Increased pulmonary vascular resistance index in the hypertensive group may relate to pulmonary venous hypertension secondary to LV dysfunction. This is an important consideration in this cohort when selecting the physiologically most appropriate treatment.
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Affiliation(s)
| | - Adrianne R Bischoff
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, Iowa
| | - Regan E Giesinger
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, Iowa
| | - Danielle R Rios
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, Iowa
| | - Amy H Stanford
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, Iowa
| | - Patrick J McNamara
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, Iowa; Department of Internal Medicine, University of Iowa, Iowa City, Iowa.
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9
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Dadon Z, Orlev A, Butnaru A, Rosenmann D, Glikson M, Gottlieb S, Alpert EA. Empowering Medical Students: Harnessing Artificial Intelligence for Precision Point-of-Care Echocardiography Assessment of Left Ventricular Ejection Fraction. Int J Clin Pract 2023; 2023:5225872. [PMID: 38078051 PMCID: PMC10699938 DOI: 10.1155/2023/5225872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 10/14/2023] [Accepted: 11/14/2023] [Indexed: 12/18/2023] Open
Abstract
Introduction Point-of-care ultrasound (POCUS) use is now universal among nonexperts. Artificial intelligence (AI) is currently employed by nonexperts in various imaging modalities to assist in diagnosis and decision making. Aim To evaluate the diagnostic accuracy of POCUS, operated by medical students with the assistance of an AI-based tool for assessing the left ventricular ejection fraction (LVEF) of patients admitted to a cardiology department. Methods Eight students underwent a 6-hour didactic and hands-on training session. Participants used a hand-held ultrasound device (HUD) equipped with an AI-based tool for the automatic evaluation of LVEF. The clips were assessed for LVEF by three methods: visually by the students, by students + the AI-based tool, and by the cardiologists. All LVEF measurements were compared to formal echocardiography completed within 24 hours and were evaluated for LVEF using the Simpson method and eyeballing assessment by expert echocardiographers. Results The study included 88 patients (aged 58.3 ± 16.3 years). The AI-based tool measurement was unsuccessful in 6 cases. Comparing LVEF reported by students' visual evaluation and students + AI vs. cardiologists revealed a correlation of 0.51 and 0.83, respectively. Comparing these three evaluation methods with the echocardiographers revealed a moderate/substantial agreement for the students + AI and cardiologists but only a fair agreement for the students' visual evaluation. Conclusion Medical students' utilization of an AI-based tool with a HUD for LVEF assessment achieved a level of accuracy similar to that of cardiologists. Furthermore, the use of AI by the students achieved moderate to substantial inter-rater reliability with expert echocardiographers' evaluation.
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Affiliation(s)
- Ziv Dadon
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Amir Orlev
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Adi Butnaru
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
| | - David Rosenmann
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
| | - Michael Glikson
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Shmuel Gottlieb
- Jesselson Integrated Heart Center, Shaare Zedek Medical Center, Jerusalem, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Evan Avraham Alpert
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
- Department of Emergency Medicine, Shaare Zedek Medical Center, Jerusalem, Israel
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10
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Jańczewska I, Wierzba J, Jańczewska A, Szczurek-Gierczak M, Domżalska-Popadiuk I. Prematurity and Low Birth Weight and Their Impact on Childhood Growth Patterns and the Risk of Long-Term Cardiovascular Sequelae. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1599. [PMID: 37892262 PMCID: PMC10605160 DOI: 10.3390/children10101599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 09/17/2023] [Accepted: 09/21/2023] [Indexed: 10/29/2023]
Abstract
Preterm birth (before 37 completed weeks of gestation) is a global health problem, remaining the main reason for neonatal mortality and morbidity. Improvements in perinatal and neonatal care in recent decades have been associated with a higher survival rate of extremely preterm infants, leading to a higher risk of long-term sequelae in this population throughout life. Numerous surveillance programs for formerly premature infants continue to focus on neurodevelopmental disorders, while long-term assessment of the impact of preterm birth and low birth weight on child growth and the associated risk of cardiovascular disease in young adults is equally necessary. This review will discuss the influence of prematurity and low birth weight on childhood growth and cardiovascular risk in children, adolescents and young adults. The risk of cardiovascular and metabolic disorders is increased in adult preterm survivors. In early childhood, preterm infants may show elevated blood pressure, weakened vascular growth, augmented peripheral vascular resistance and cardiomyocyte remodeling. Increased weight gain during the early postnatal period may influence later body composition, promote obesity and impair cardiovascular results. These adverse metabolic alterations contribute to an increased risk of cardiovascular incidents, adult hypertension and diabetes. Preterm-born children and those with fetal growth restriction (FGR) who demonstrate rapid changes in their weight percentile should remain under surveillance with blood pressure monitoring. A better understanding of lifelong health outcomes of preterm-born individuals is crucial for developing strategies to prevent cardiovascular sequelae and may be the basis for future research to provide effective interventions.
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Affiliation(s)
- Iwona Jańczewska
- Department of Neonatology, Medical University of Gdansk, Mariana Smoluchowskiego 17 Street, 80-214 Gdansk, Poland
| | - Jolanta Wierzba
- Department of Internal and Pediatric Nursing, Institute of Nursing and Midwifery, Medical University of Gdansk, Debinki 7 Street, 80-211 Gdansk, Poland
| | - Alicja Jańczewska
- Diagnostic Imaging Department, Voivodeship Oncology Centre, Skłodowskiej-Curie 2 Street, 80-210 Gdansk, Poland
| | - Małgorzata Szczurek-Gierczak
- Department of Obstetrics and Gynecology, Pomeranian Hospitals in Gdynia, Powstania Styczniowego 1 Street, 81-519 Gdynia, Poland
| | - Iwona Domżalska-Popadiuk
- Department of Neonatology, Medical University of Gdansk, Mariana Smoluchowskiego 17 Street, 80-214 Gdansk, Poland
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11
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Moore SS, De Carvalho Nunes G, Villegas Martinez D, Dancea A, Wutthigate P, Simoneau J, Beltempo M, Sant'Anna G, Altit G. Association of Gestational Age at Birth With Left Cardiac Dimensions at Near-Term Corrected Age Among Extremely Preterm Infants. J Am Soc Echocardiogr 2023; 36:867-877. [PMID: 37044171 DOI: 10.1016/j.echo.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 03/29/2023] [Accepted: 04/02/2023] [Indexed: 04/14/2023]
Abstract
BACKGROUND Remodeling and altered ventricular geometry have been described in adults born preterm. Although they seem to have an adverse cardiac phenotype, the impact of various degrees of prematurity on cardiac development has been scarcely reported. In this study, we evaluated the impact of gestational age (GA) at birth on cardiac dimensions and function at near-term age among extremely preterm infants. METHODS This is a retrospective single-center cohort study of infants born at <29 weeks of GA between 2015 and 2019. Infants with available clinically acquired echocardiography between 34 and 43 weeks were included. Two groups were investigated: those born <26 weeks and those born ≥26 weeks. All measurements were done by an expert masked to clinical data using the raw images. The primary outcome was measurements of cardiac dimensions and function based on GA group. Secondary outcomes were the association between cardiac dimensions and postnatal steroid exposure and with increments of GA at birth. RESULTS A total of 205 infants were included (<26 weeks, n = 102; ≥26 weeks, n = 103). At time of echocardiography, weight (2.4 ± 0.5 vs 2.5 ± 0.5 kg, P = .86) and age (37.2 ± 1.6 vs 37.1 ± 1.9 weeks, P = .74) were similar between groups. There was no difference in metrics of right-sided dimensions and function. However, left-sided dimensions were decreased in infants born <26 weeks, including systolic left ventricle (LV) diameter (1.06 ± 0.20 cm vs 1.12 ± 0.18 cm, P = .02), diastolic LV length (2.85 ± 0.37 vs 3.02 ± 0.57 cm, P = .02), and estimated LV end-diastolic volume (5.36 ± 1.69 vs 6.01 ± 1.79 mL, P = .02). CONCLUSIONS In our cohort of very immature infants, birth at the extreme of prematurity was associated with smaller left cardiac dimensions around 36 weeks of corrected age. Future longitudinal prospective studies should evaluate further the impact of prematurity on LV development and performance and their long-term clinical impact.
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Affiliation(s)
- Shiran Sara Moore
- Department of Neonatology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada Department of Pediatrics, McGill University, Montreal, Quebec, Canada; Department of Neonatology, Dana Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Gabriela De Carvalho Nunes
- Department of Neonatology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Daniela Villegas Martinez
- Department of Neonatology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Adrian Dancea
- Department of Pediatric Cardiology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada
| | - Punnanee Wutthigate
- Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Jessica Simoneau
- Department of Pediatric Cardiology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada
| | - Marc Beltempo
- Department of Neonatology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Guilherme Sant'Anna
- Department of Neonatology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Gabriel Altit
- Department of Neonatology, McGill University Health Centre, Montreal Children's Hospital, McGill University, Montreal, Quebec, Canada Department of Pediatrics, McGill University, Montreal, Quebec, Canada.
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12
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Youssef L, Castellani R, Valenzuela-Alcaraz B, Sepulveda-Martinez Á, Crovetto F, Crispi F. Cardiac remodeling from the fetus to adulthood. JOURNAL OF CLINICAL ULTRASOUND : JCU 2023; 51:249-264. [PMID: 36785500 DOI: 10.1002/jcu.23336] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 07/10/2022] [Accepted: 07/24/2022] [Indexed: 06/18/2023]
Abstract
Prenatal cardiac remodeling refers to in utero changes in the fetal heart that occur as a response to an adverse intrauterine environment. In this article, we will review the main mechanisms leading to cardiac remodeling and dysfunction, summarizing and describing the major pathological conditions that have been reported to be related to this in utero plastic adaptive process. We will also recap the current evidence regarding the persistence of fetal cardiac remodeling and dysfunction, both in infancy and later in adult life. Moreover, we will discuss primary, secondary, and tertiary preventive measures and future clinical and research aspects.
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Affiliation(s)
- Lina Youssef
- BCNatal|Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Barcelona, Spain
| | - Roberta Castellani
- BCNatal|Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Barcelona, Spain
- Department of Obstetrics and Gynecology, University of Brescia, Brescia, Italy
| | - Brenda Valenzuela-Alcaraz
- BCNatal|Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Barcelona, Spain
| | - Álvaro Sepulveda-Martinez
- BCNatal|Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Barcelona, Spain
- Fetal Medicine Unit, Department of Obstetrics and Gynecology, Hospital Clínico de la Universidad de Chile, Santiago de Chile, Chile
- Fetal Medicine Unit, Department of Obstetrics and Gynecology, Clínica Alemana de Santiago, Santiago de Chile, Chile
| | - Francesca Crovetto
- BCNatal|Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Barcelona, Spain
- Centre for Biomedical Research on Rare Diseases (CIBER-ER), Madrid, Spain
| | - Fàtima Crispi
- BCNatal|Fetal Medicine Research Center (Hospital Clínic and Hospital Sant Joan de Déu), University of Barcelona, Barcelona, Spain
- Centre for Biomedical Research on Rare Diseases (CIBER-ER), Madrid, Spain
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13
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Ivanova VV, Milto IV, Serebryakova ON, Sukhodolo IV. Effect of preterm birth in rats on proliferation and hyperplasia of cardiomyocytes. BULLETIN OF SIBERIAN MEDICINE 2023. [DOI: 10.20538/1682-0363-2022-4-72-78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Aim. To identify the effect of preterm birth on proliferation and hyperplasia of cardiomyocytes in the early postnatal period of ontogenesis in rats.Materials and methods. Preterm birth (on day 21 and 21.5 of gestation) in Wistar rats was induced by subcutaneous administration of mifepristone. Immunohistochemistry was used to identify and calculate the number of Ki67-positive and Mklp2-positive cardiomyocytes in the left ventricle of preterm and full-term rats on days 1, 2, 3, 4, 5, and 6 of postnatal ontogenesis. Statistical analysis of morphometric parameters was performed using the Shapiro – Wilk test and Mann – Whitney test with the Bonferroni correction.Results. We revealed an increase in the number of Ki67-positive cardiomyocytes in the left ventricle of the rats: on day 1 of postnatal ontogenesis (in the rats born on day 21 of gestation) and on days 3–5 of postnatal ontogenesis (in the rats born on day 21.5 of gestation). Preterm birth in rats did not result in a change in the number of Mklp2-positive cardiomyocytes in the left ventricular wall.Conclusion. A change in the pattern of Ki67 expression by cardiomyocytes in the rats born 12 or 24 hours before full term was demonstrated in the early postnatal period of ontogenesis. An isolated increase in Ki67 expression without a change in Mklp2 expression by cardiomyocytes in the left ventricular wall of preterm rats indicates acceleration of cardiomyocyte hypertrophy. Shorter duration of prenatal development is associated with more pronounced morphological and functional rearrangements in the rat myocardium.
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Affiliation(s)
| | - I. V. Milto
- Siberian State Medical University;
Seversk Biophysical Research Center
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14
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Zhang J, Ouyang Z, Xia L, Wang Q, Zheng F, Xu K, Xing Y, Wei K, Shi S, Li C, Yang J. Dynamic chromatin landscape encodes programs for perinatal transition of cardiomyocytes. Cell Death Dis 2023; 9:11. [PMID: 36653336 PMCID: PMC9849264 DOI: 10.1038/s41420-023-01322-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 01/09/2023] [Accepted: 01/10/2023] [Indexed: 01/19/2023]
Abstract
The perinatal period occurring immediately before and after birth is critical for cardiomyocytes because they must change rapidly to accommodate the switch from fetal to neonatal circulation after birth. This transition is a well-orchestrated process, and any perturbation leads to unhealthy cardiomyocytes and heart disease. Despite its importance, little is known about how this transition is regulated and controlled. Here, by mapping the genome-wide chromatin accessibility, transcription-centered long-range chromatin interactions and gene expression in cardiomyocytes undergoing perinatal transition, we discovered two key transcription factors, MEF2 and AP1, that are crucial for driving the phenotypic changes within the perinatal window. Thousands of dynamic regulatory elements were found in perinatal cardiomyocytes and we show these elements mediated the transcriptional reprogramming through an elegant chromatin high-order architecture. We recompiled transcriptional program of induced stem cell-derived cardiomyocytes according to our discovered network, and they showed adult cardiomyocyte-like electrophysiological expression. Our work provides a comprehensive regulatory resource of cardiomyocytes perinatal reprogramming, and aids the gap-filling of cardiac translational research.
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Affiliation(s)
- Jing Zhang
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China ,grid.41156.370000 0001 2314 964XJiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
| | - Zhaohui Ouyang
- grid.24516.340000000123704535Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, 200092 Shanghai, China
| | - Limei Xia
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China ,grid.41156.370000 0001 2314 964XJiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
| | - Qi Wang
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China ,grid.41156.370000 0001 2314 964XJiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
| | - Feng Zheng
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China ,grid.41156.370000 0001 2314 964XJiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
| | - Kun Xu
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China ,grid.41156.370000 0001 2314 964XJiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
| | - Yuexian Xing
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
| | - Ke Wei
- grid.24516.340000000123704535Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai Key Laboratory of Signaling and Disease Research, Frontier Science Center for Stem Cell Research, School of Life Sciences and Technology, Tongji University, 200092 Shanghai, China
| | - Shaolin Shi
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
| | - Chaojun Li
- grid.89957.3a0000 0000 9255 8984State Key Laboratory of Reproductive Medicine and China International Joint Research Center on Environment and Human Health, Center for Global Health, School of Public Health, Gusu School, Nanjing Medical University, 211166 Nanjing, China
| | - Jingping Yang
- grid.41156.370000 0001 2314 964XState Key Laboratory of Pharmaceutical Biotechnology, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China ,grid.41156.370000 0001 2314 964XJiangsu Key Laboratory of Molecular Medicine, Medical School, Nanjing University, 210093 Nanjing, Jiangsu China
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15
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Gestational Diabetes Mellitus and Antenatal Corticosteroid Therapy-A Narrative Review of Fetal and Neonatal Outcomes. J Clin Med 2022; 12:jcm12010323. [PMID: 36615121 PMCID: PMC9820953 DOI: 10.3390/jcm12010323] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/17/2022] [Accepted: 12/26/2022] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND There, we review the pathogenesis of gestational diabetes mellitus (GDM), its influence on fetal physiology, and neonatal outcomes, as well as the usage of antenatal corticosteroid therapy (ACST) in pregnancies complicated by GDM. METHODS MEDLINE and PubMed search was performed for the years 1990-2022, using a combination of keywords on such topics. According to the aim of the investigation, appropriate articles were identified and included in this narrative review. RESULTS GDM is a multifactorial disease related to unwanted pregnancy course and outcomes. Although GDM has an influence on the fetal cardiovascular and nervous system, especially in preterm neonates, the usage of ACST in pregnancy must be considered taking into account maternal and fetal characteristics. CONCLUSIONS GDM has no influence on neonatal outcomes after ACST introduction. The ACST usage must be personalized and considered according to its gestational age-specific effects on the developing fetus.
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16
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Management of cardiac dysfunction in neonates with pulmonary hypertension and the role of the ductus arteriosus. Semin Fetal Neonatal Med 2022; 27:101368. [PMID: 35798649 DOI: 10.1016/j.siny.2022.101368] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pulmonary hypertension in the neonate is associated with cardiopulmonary disturbances and neurodevelopment morbidity. The patent ductus arteriosus is a persistent fetal shunt that can be pathologic vs supportive in the setting of neonatal pulmonary hypertension. Understanding the underlying pathophysiology of pulmonary hypertension and the cardiopulmonary effects of various phenotypes can guide management in this vulnerable population. In this narrative, we will summarize the physiologic principles of pulmonary hypertension, the impact of the patent ductus arteriosus on various phenotypes, and the utility of serial targeted neonatal echocardiography to individualize clinical assessment and management.
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17
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Bertagnolli M, Dartora DR, Lamata P, Zacur E, Mai-Vo TA, He Y, Beauchamp L, Lewandowski AJ, Cloutier A, Sutherland MR, Santos RAS, Nuyt AM. Reshaping the Preterm Heart: Shifting Cardiac Renin-Angiotensin System Towards Cardioprotection in Rats Exposed to Neonatal High-Oxygen Stress. Hypertension 2022; 79:1789-1803. [PMID: 35588210 PMCID: PMC9278707 DOI: 10.1161/hypertensionaha.122.19115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Approximately 10% of infants are born preterm. Preterm birth leads to short and long-term changes in cardiac shape and function. By using a rat model of neonatal high-oxygen (80%O2) exposure, mimicking the premature hyperoxic transition to the extrauterine environment, we revealed a major role of the renin-angiotensin system peptide Angio II (angiotensin II) and its receptor AT1 (angiotensin receptor type 1) on neonatal O2-induced cardiomyopathy. Here, we tested whether treatment with either orally active compounds of the peptides Angio-(1-7) or alamandine included in cyclodextrin could prevent postnatal cardiac remodeling and the programming of cardiomyopathy induced by neonatal high-O2 exposure. METHODS Sprague-Dawley pups were exposed to room air or 80% O2 from postnatal day 3 (P3) to P10. Neonatal rats were treated orally from P3 to P10 and assessed at P10 and P28. Left ventricular (LV) shapes were characterized by tridimensional computational atlases of ultrasound images in addition to histomorphometry. RESULTS At P10, high O2-exposed rats presented a smaller, globular and hypertrophied LV shape versus controls. Treatment with cyclodextrin-Angio-(1-7) significantly improved LV function in the O2-exposed neonatal rats and slightly changed LV shape. Cyclodextrin-alamandine and cyclodextrin-Angio-(1-7) treatments similarly reduced hypertrophy at P10 as well as LV remodeling and dysfunction at P28. Both treatments upregulated cardiac angiotensin-converting enzyme 2 in O2-exposed rats at P10 and P28. CONCLUSIONS Our findings demonstrate LV remodeling changes induced by O2-stress and the potential benefits of treatments targeting the cardioprotective renin-angiotensin system axis, supporting the neonatal period as an important window for interventions aiming at preventing cardiomyopathy in people born preterm.
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Affiliation(s)
- Mariane Bertagnolli
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.).,Research Center of the Hospital Sacré-Coeur, CIUSSS Nord-de-l'Île-de-Montréal, Canada (M.B.).,School of Physical and Occupational Therapy, Faculty of Medicine, McGill University, Montréal, Canada (M.B.)
| | - Daniela R Dartora
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.).,Instituto de Cardiologia de Porto Alegre, Fundação Universitária de Cardiologia, Brazil (D.R.D.)
| | - Pablo Lamata
- Department of Biomedical Engineering, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom (P.L., E.Z.)
| | - Ernesto Zacur
- Department of Biomedical Engineering, Division of Imaging Sciences and Biomedical Engineering, King's College London, United Kingdom (P.L., E.Z.)
| | - Thuy-An Mai-Vo
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.)
| | - Ying He
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.)
| | - Léonie Beauchamp
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.)
| | - Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, United Kingdom (A.J.L.)
| | - Anik Cloutier
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.)
| | - Megan R Sutherland
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.).,Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia (M.R.S.)
| | - Robson A S Santos
- Department of Physiology, Instituto Nacional de Ciência e Tecnologia - Nanobiofar, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil (R.A.S.S.)
| | - Anne Monique Nuyt
- Sainte-Justine University Hospital Research Center, Université de Montréal, Canada (M.B., D.R.D., T.-A.M.-V., Y.H., L.B., A.C., M.R.S., A.M.N.)
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18
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Oshita H, Sawada H, Mitani Y, Tsuboya N, Kabwe JC, Maruyama J, Yusuf A, Ito H, Okamoto R, Otsuki S, Yodoya N, Ohashi H, Oya K, Kobayashi Y, Kobayashi I, Dohi K, Nishimura Y, Saitoh S, Maruyama K, Hirayama M. Perinatal Hypoxia Aggravates Occlusive Pulmonary Vasculopathy In SU5416/Hypoxia-Treated Rats Later In Life. Am J Physiol Lung Cell Mol Physiol 2022; 323:L178-L192. [PMID: 35762603 DOI: 10.1152/ajplung.00422.2021] [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] Open
Abstract
Pulmonary arterial hypertension (PAH) is a fatal disease, which is characterized by occlusive pulmonary vascular disease (PVD) in small pulmonary arteries. It remains unknown whether perinatal insults aggravate occlusive PVD later in life. We tested the hypothesis that perinatal hypoxia aggravates PVD and survival in rats. PVD was induced in rats with/without perinatal hypoxia (E14 to P3) by injecting SU5416 at 7 weeks of age and subsequent exposure to hypoxia for 3 weeks (SU5416/hypoxia). Hemodynamic and morphological analyses were performed in rats with/without perinatal hypoxia at 7 weeks of age (baseline rats, n=12) and at 15 weeks of age in 4 groups of rats: SU5416/hypoxia or control rats with/without perinatal hypoxia (n=40). Pulmonary artery smooth muscle cells (PASMCs) from the baseline rats with/without perinatal hypoxia were used to assess cell proliferation, inflammation and genomic DNA methylation profile. Although perinatal hypoxia alone did not affect survival, physiological or pathological parameters at baseline or at the end of the experimental period in controls, perinatal hypoxia decreased weight gain and survival rate, and increased right ventricular systolic pressure, right ventricular hypertrophy, and indices of PVD in SU5416/hypoxia rats. Perinatal hypoxia alone accelerated the proliferation and inflammation of cultured PASMCs from baseline rats, which was associated with DNA methylation. In conclusion, we established the first fatal animal model of PAH with worsening hemodynamics and occlusive PVD elicited by perinatal hypoxia, which was associated with hyperproliferative, pro-inflammatory, and epigenetic changes in cultured PASMCs. These findings provide insights into the treatment and prevention of occlusive PVD.
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Affiliation(s)
- Hironori Oshita
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan.,Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
| | - Hirofumi Sawada
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan.,Department of Anesthesiology and Critical Care Medicine, Mie University Graduate School of Medicine, Mie, Japan
| | - Yoshihide Mitani
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Naoki Tsuboya
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Jane Chanda Kabwe
- Department of Anesthesiology and Critical Care Medicine, Mie University Graduate School of Medicine, Mie, Japan
| | - Junko Maruyama
- Department of Clinical Engineering, Suzuka University of Medical Science, Mie, Japan
| | - Ali Yusuf
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Hiromasa Ito
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Ryuji Okamoto
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Shoichiro Otsuki
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Noriko Yodoya
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Hiroyuki Ohashi
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Kazunobu Oya
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
| | - Yuhko Kobayashi
- Center for Molecular Biology and Genetics, Organization for the Promotion of Regional Innovation, Mie University, Mie, Japan
| | - Issei Kobayashi
- Center for Molecular Biology and Genetics, Organization for the Promotion of Regional Innovation, Mie University, Mie, Japan
| | - Kaoru Dohi
- Department of Cardiology and Nephrology, Mie University Graduate School of Medicine, Mie, Japan
| | - Yuhei Nishimura
- Integrative Pharmacology, Mie University Graduate School of Medicine, Mie, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Aichi, Japan
| | - Kazuo Maruyama
- Department of Anesthesiology and Critical Care Medicine, Mie University Graduate School of Medicine, Mie, Japan
| | - Masahiro Hirayama
- Department of Pediatrics, Mie University Graduate School of Medicine, Mie, Japan
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19
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Korada S, Jebbia MR, Pavlek LR. Linking the Perinatal Environment to Neonatal Cardiovascular Outcomes. Neoreviews 2022; 23:e400-e408. [PMID: 35641456 DOI: 10.1542/neo.23-6-e400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Cases of high-risk pregnancies continue to rise throughout the United States and globally, increasing rates of maternal and neonatal morbidity. Common pregnancy complications and morbidities include preterm birth, hypertensive disorders, fetal growth restriction, diabetes mellitus, and chorioamnionitis. Exposure to these perinatal conditions contributes to cardiac morbidities in the fetus and neonate, including altered cardiac growth, congenital heart disease, and cardiac dysfunction. Significant research has demonstrated lasting effects of these pregnancy complications, with increased rates of cardiac morbidities seen in children and adults after these perinatal exposures. The link between the perinatal environment and long-term outcomes has not been fully elucidated. The aim of this review is to discuss the current understanding of the implications of a high-risk pregnancy on fetal and neonatal cardiac development.
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Affiliation(s)
- Saichidroopi Korada
- Center for Perinatal Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH
| | - Maria R Jebbia
- Division of Neonatology, Nationwide Children's Hospital, Columbus, OH.,Department of Pediatrics, The Ohio State University, Columbus, OH
| | - Leeann R Pavlek
- Center for Perinatal Research, The Abigail Wexner Research Institute at Nationwide Children's Hospital, Columbus, OH.,Division of Neonatology, Nationwide Children's Hospital, Columbus, OH.,Department of Pediatrics, The Ohio State University, Columbus, OH
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20
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Chang HY, Chang JH, Peng CC, Hsu CH, Ko MHJ, Hung CL, Chen MR. Subclinical Changes in Left Heart Structure and Function at Preschool Age in Very Low Birth Weight Preterm Infants. Front Cardiovasc Med 2022; 9:879952. [PMID: 35600491 PMCID: PMC9120602 DOI: 10.3389/fcvm.2022.879952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 04/19/2022] [Indexed: 11/13/2022] Open
Abstract
Background Survivors of preterm birth are at risk of long-term cardiovascular consequences. The objective of this prospective observational study was to assess left heart function at preschool age in preterm children with very low birth weight (VLBW). Methods We recruited children aged 5–6 years from preterm infants and full-term children. All subjects underwent conventional echocardiography and speckle-tracking echocardiography. The results were compared between the preterm and term groups. Results Eighty-seven VLBW preterm children and 29 term controls were included in the study. After adjusting for body surface area, the preterm group compared to the full-term group had significantly smaller left ventricular (LV) end-diastolic and end-systolic internal dimensions (31.2 vs. 33.5 mm, p = 0.048; and 20.0 vs. 21.6 mm, respectively; p = 0.024), lower LV end-diastolic and end-systolic volumes (38.8 vs. 46.3 mL, p = 0.024; and 12.8 vs. 15.6 mL, respectively; p = 0.008). Left atrial (LA) maximal and minimal volume were also significantly smaller in the preterm group (15.4 vs. 18.9 mL, p = 0.017; and 6.2 vs 7.5 mL, respectively; p = 0.018). LV global longitudinal strain (−21.4 vs. −23.2%, p < 0.0001) and systolic strain rate (−1.30 vs. −1.37 /s, p = 0.001) were significantly lower in the preterm group than in the term control group. LA longitudinal strain was decreased (43.9 vs. 52.8%, p < 0.0001) and left atrial stiffness index (0.17 vs. 0.14, p < 0.0001) was increased in preterm infants. However, all the measurements in both groups were within normal range. Conclusions Subclinical changes of left heart structure and function were found in VLBW infants at preschool age. Additional long-term follow-ups of the cardiovascular outcomes are needed in this vulnerable population.
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Affiliation(s)
- Hung-Yang Chang
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Jui-Hsing Chang
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Chun-Chih Peng
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
| | - Chyong-Hsin Hsu
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
| | - Mary Hsin-Ju Ko
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
- Department of Pediatrics, Hsinchu MacKay Hospital, Hsinchu, Taiwan
| | - Chung-Lieh Hung
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Division of Cardiology, Department of Internal Medicine, Mackay Memorial Hospital, Taipei, Taiwan
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City, Taiwan
- *Correspondence: Ming-Ren Chen
| | - Ming-Ren Chen
- Department of Pediatrics, MacKay Children's Hospital, Taipei, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City, Taiwan
- Chung-Lieh Hung
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21
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Kitt J, Frost A, Mollison J, Tucker KL, Suriano K, Kenworthy Y, McCourt A, Woodward W, Tan C, Lapidaire W, Mills R, Lacharie M, Tunnicliffe EM, Raman B, Santos M, Roman C, Hanssen H, Mackillop L, Cairns A, Thilaganathan B, Chappell L, Aye C, Lewandowski AJ, McManus RJ, Leeson P. Postpartum blood pressure self-management following hypertensive pregnancy: protocol of the Physician Optimised Post-partum Hypertension Treatment (POP-HT) trial. BMJ Open 2022; 12:e051180. [PMID: 35197335 PMCID: PMC8867381 DOI: 10.1136/bmjopen-2021-051180] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 01/25/2022] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION New-onset hypertension affects approximately 10% of pregnancies and is associated with a significant increase in risk of cardiovascular disease in later life, with blood pressure measured 6 weeks postpartum predictive of blood pressure 5-10 years later. A pilot trial has demonstrated that improved blood pressure control, achevied via self-management during the puerperium, was associated with lower blood pressure 3-4 years postpartum. Physician Optimised Post-partum Hypertension Treatment (POP-HT) will formally evaluate whether improved blood pressure control in the puerperium results in lower blood pressure at 6 months post partum, and improvements in cardiovascular and cerebrovascular phenotypes. METHODS AND ANALYSIS POP-HT is an open-label, parallel arm, randomised controlled trial involving 200 women aged 18 years or over, with a diagnosis of pre-eclampsia or gestational hypertension, and requiring antihypertensive medication at discharge. Women are recruited by open recruitment and direct invitation around time of delivery and randomised 1:1 to, either an intervention comprising physician-optimised self-management of postpartum blood pressure or, usual care. Women in the intervention group upload blood pressure readings to a 'smartphone' app that provides algorithm-driven individualised medication-titration. Medication changes are approved by physicians, who review blood pressure readings remotely. Women in the control arm follow assessment and medication adjustment by their usual healthcare team. The primary outcome is 24-hour average ambulatory diastolic blood pressure at 6-9 months post partum. Secondary outcomes include: additional blood pressure parameters at baseline, week 1 and week 6; multimodal cardiovascular assessments (CMR and echocardiography); parameters derived from multiorgan MRI including brain and kidneys; peripheral macrovascular and microvascular measures; angiogenic profile measures taken from blood samples and levels of endothelial circulating and cellular biomarkers; and objective physical activity monitoring and exercise assessment. An additional 20 women will be recruited after a normotensive pregnancy as a comparator group for endothelial cellular biomarkers. ETHICS AND DISSEMINATION IRAS PROJECT ID 273353. This trial has received a favourable opinion from the London-Surrey Research Ethics Committee and HRA (REC Reference 19/LO/1901). The investigator will ensure that this trial is conducted in accordance with the principles of the Declaration of Helsinki and follow good clinical practice guidelines. The investigators will be involved in reviewing drafts of the manuscripts, abstracts, press releases and any other publications arising from the study. Authors will acknowledge that the study was funded by the British Heart Foundation Clinical Research Training Fellowship (BHF Grant number FS/19/7/34148). Authorship will be determined in accordance with the ICMJE guidelines and other contributors will be acknowledged. TRIAL REGISTRATION NUMBER NCT04273854.
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Affiliation(s)
- Jamie Kitt
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
| | - Annabelle Frost
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
| | - Jill Mollison
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | | | - Katie Suriano
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
| | - Yvonne Kenworthy
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, UK
| | - Annabelle McCourt
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
| | - William Woodward
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
| | - Cheryl Tan
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
| | - Winok Lapidaire
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
| | - Rebecca Mills
- Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Miriam Lacharie
- Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | | | - Betty Raman
- Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Mauro Santos
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
| | - Cristian Roman
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, UK
| | - Henner Hanssen
- Department of Sport, Exercise and Health, University of Basel, Basel, Switzerland
| | - Lucy Mackillop
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK
| | - Alexandra Cairns
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK
| | | | - Lucy Chappell
- Women's Health Academic Centre, King's College London, London, UK
| | - Christina Aye
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK
| | - Adam J Lewandowski
- Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Richard J McManus
- Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Paul Leeson
- Division of Cardiovascular Medicine, University of Oxford, Oxford, UK
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22
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Abstract
As survival rates continue to improve for infants born at less than 25 weeks gestation, delineating normal cardiovascular physiology from pathophysiology becomes much more challenging. With a paucity of 'normative' data for such infants, an over-reliance on studies at older gestations can result in a 'best guess' approach. Here we offer a pragmatic approach to these diagnostic challenges from a cardiovascular viewpoint. An appreciation of the unique physiology, from the immature myocardium and altered vascular tone to an innately large patent ductus arteriosus is essential, as is a thorough history for case specific contributing factors. We explore the additional difficulties in achieving a balance between minimal handling at the bedside and delineating important objective markers of perfusion. Finally, we discuss treatment approaches including inotrope therapy and patent ductus treatment, acknowledging the limited data available to guide these decisions.
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23
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Duke JW, Lewandowski AJ, Abman SH, Lovering AT. Physiological aspects of cardiopulmonary dysanapsis on exercise in adults born preterm. J Physiol 2022; 600:463-482. [PMID: 34961925 PMCID: PMC9036864 DOI: 10.1113/jp281848] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 12/03/2021] [Indexed: 02/03/2023] Open
Abstract
Progressive improvements in perinatal care and respiratory management of preterm infants have resulted in increased survival of newborns of extremely low gestational age over the past few decades. However, the incidence of bronchopulmonary dysplasia, the chronic lung disease after preterm birth, has not changed. Studies of the long-term follow-up of adults born preterm have shown persistent abnormalities of respiratory, cardiovascular and cardiopulmonary function, possibly leading to a lower exercise capacity. The underlying causes of these abnormalities are incompletely known, but we hypothesize that dysanapsis, i.e. discordant growth and development, in the respiratory and cardiovascular systems is a central structural feature that leads to a lower exercise capacity in young adults born preterm than those born at term. We discuss how the hypothesized system dysanapsis underscores the observed respiratory, cardiovascular and cardiopulmonary limitations. Specifically, adults born preterm have: (1) normal lung volumes but smaller airways, which causes expiratory airflow limitation and abnormal respiratory mechanics but without impacts on pulmonary gas exchange efficiency; (2) normal total cardiac size but smaller cardiac chambers; and (3) in some cases, evidence of pulmonary hypertension, particularly during exercise, suggesting a reduced pulmonary vascular capacity despite reduced cardiac output. We speculate that these underlying developmental abnormalities may accelerate the normal age-associated decline in exercise capacity, via an accelerated decline in respiratory, cardiovascular and cardiopulmonary function. Finally, we suggest areas of future research, especially the need for longitudinal and interventional studies from infancy into adulthood to better understand how preterm birth alters exercise capacity across the lifespan.
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Affiliation(s)
- Joseph W. Duke
- Northern Arizona University, Department of Biological Sciences, Flagstaff, AZ, USA
| | - Adam J. Lewandowski
- University of Oxford, Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, Oxford, UK
| | - Steven H. Abman
- University of Colorado Anschutz School of Medicine, Department of Pediatrics, Aurora, CO, USA
- Pediatric Heart Lung Center, Children’s Hospital Colorado, Aurora, CO, USA
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24
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Schuermans A, Lewandowski AJ. Understanding the Preterm Human Heart: What do We Know So Far? Anat Rec (Hoboken) 2022; 305:2099-2112. [PMID: 35090100 PMCID: PMC9542725 DOI: 10.1002/ar.24875] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 11/15/2021] [Accepted: 12/12/2021] [Indexed: 11/20/2022]
Abstract
Globally, preterm birth affects more than one in every 10 live births. Although the short‐term cardiopulmonary complications of prematurity are well known, long‐term health effects are only now becoming apparent. Indeed, preterm birth has been associated with elevated cardiovascular morbidity and mortality in adulthood. Experimental animal models and observational human studies point toward changes in heart morphology and function from birth to adulthood in people born preterm that may contribute to known long‐term risks. Moreover, recent data support the notion of a heterogeneous cardiac phenotype of prematurity, which is likely driven by various maternal, early, and late life factors. This review aims to describe the early fetal‐to‐neonatal transition in preterm birth, the different structural and functional changes of the preterm human heart across developmental stages, as well as potential factors contributing to the cardiac phenotype of prematurity.
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Affiliation(s)
- Art Schuermans
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom.,Faculty of Medicine, KU Leuven, Leuven, Belgium
| | - Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
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25
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Intrauterine inflammation exacerbates maladaptive remodeling of the immature myocardium after preterm birth in lambs. Pediatr Res 2022; 92:1555-1565. [PMID: 35277596 PMCID: PMC9771797 DOI: 10.1038/s41390-022-01955-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/14/2021] [Accepted: 12/14/2021] [Indexed: 12/30/2022]
Abstract
BACKGROUND Antenatal conditions that are linked with preterm birth, such as intrauterine inflammation, can influence fetal cardiac development thereby rendering the heart more vulnerable to the effects of prematurity. We aimed to investigate the effect of intrauterine inflammation, consequent to lipopolysaccharide exposure, on postnatal cardiac growth and maturation in preterm lambs. METHODS Preterm lambs (~129 days gestational age) exposed antenatally to lipopolysaccharide or saline were managed according to contemporary neonatal care and studied at postnatal day 7. Age-matched fetal controls were studied at ~136 days gestational age. Cardiac tissue was sampled for molecular analyses and assessment of cardiac structure and cardiomyocyte maturation. RESULTS Lambs delivered preterm showed distinct ventricular differences in cardiomyocyte growth and maturation trajectories as well as remodeling of the left ventricular myocardium compared to fetal controls. Antenatal exposure to lipopolysaccharide resulted in further collagen deposition in the left ventricle and a greater presence of immune cells in the preterm heart. CONCLUSIONS Adverse impacts of preterm birth on cardiac structure and cardiomyocyte growth kinetics within the first week of postnatal life are exacerbated by intrauterine inflammation. The maladaptive remodeling of the cardiac structure and perturbed cardiomyocyte growth likely contribute to the increased vulnerability to cardiac dysfunction following preterm birth. IMPACT Preterm birth induces maladaptive cardiac remodeling and adversely impacts cardiomyocyte growth kinetics within the first week of life in sheep. These effects of prematurity on the heart are exacerbated when preterm birth is preceded by exposure to intrauterine inflammation, a common antecedent of preterm birth. Inflammatory injury to the fetal heart coupled with preterm birth consequently alters neonatal cardiac growth and maturation and thus, may potentially influence long-term cardiac function and health.
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26
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Chuaiphichai S, Yu GZ, Tan CM, Whiteman C, Douglas G, Dickinson Y, Drydale EN, Appari M, Zhang W, Crabtree MJ, McNeill E, Hale AB, Lewandowski AJ, Alp NJ, Vatish M, Leeson P, Channon KM. Endothelial GTPCH (GTP Cyclohydrolase 1) and Tetrahydrobiopterin Regulate Gestational Blood Pressure, Uteroplacental Remodeling, and Fetal Growth. Hypertension 2021; 78:1871-1884. [PMID: 34689592 PMCID: PMC8577301 DOI: 10.1161/hypertensionaha.120.17646] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/07/2021] [Indexed: 01/01/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Surawee Chuaiphichai
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Grace Z. Yu
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine (G.Z.Y., C.M.J.T., A.J.L., P.L.), University of Oxford, United Kingdom
| | - Cheryl M.J. Tan
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine (G.Z.Y., C.M.J.T., A.J.L., P.L.), University of Oxford, United Kingdom
| | - Christopher Whiteman
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine (G.Z.Y., C.M.J.T., A.J.L., P.L.), University of Oxford, United Kingdom
- Nuffield Department of Women’s and Reproductive Health (W.Z., M.V.), University of Oxford, United Kingdom
- National Institute for Health Research (NIHR) Oxford Biomedical Research Centre, Oxford University Hospitals National Health Service Foundation Trust, John Radcliffe Hospital, United Kingdom (M.V., K.M.C.)
| | - Gillian Douglas
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Yasmin Dickinson
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Edward N. Drydale
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Mahesh Appari
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Wei Zhang
- Nuffield Department of Women’s and Reproductive Health (W.Z., M.V.), University of Oxford, United Kingdom
| | - Mark J. Crabtree
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Eileen McNeill
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Ashley B. Hale
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Adam J. Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine (G.Z.Y., C.M.J.T., A.J.L., P.L.), University of Oxford, United Kingdom
| | - Nicholas J. Alp
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
| | - Manu Vatish
- Nuffield Department of Women’s and Reproductive Health (W.Z., M.V.), University of Oxford, United Kingdom
- National Institute for Health Research (NIHR) Oxford Biomedical Research Centre, Oxford University Hospitals National Health Service Foundation Trust, John Radcliffe Hospital, United Kingdom (M.V., K.M.C.)
| | - Paul Leeson
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine (G.Z.Y., C.M.J.T., A.J.L., P.L.), University of Oxford, United Kingdom
| | - Keith M. Channon
- Division of Cardiovascular Medicine, British Heart Foundation Centre of Research Excellence, Radcliffe Department of Medicine, University of Oxford, United Kingdom (S.C., C.W., G.D., Y.D., E.N.D., M.A., M.J.C., E.M., A.B.H., N.J.A., K.M.C.)
- National Institute for Health Research (NIHR) Oxford Biomedical Research Centre, Oxford University Hospitals National Health Service Foundation Trust, John Radcliffe Hospital, United Kingdom (M.V., K.M.C.)
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Cardiac structure and function in very preterm-born adolescents compared to term-born controls: A longitudinal cohort study. Early Hum Dev 2021; 163:105505. [PMID: 34763163 DOI: 10.1016/j.earlhumdev.2021.105505] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND There is emerging evidence of differences in cardiac structure and function in preterm-born adults and increased risk of heart failure. However, there is a paucity of data in populations who have been exposed to modern intensive care and the impact of perinatal factors is unclear. AIMS To compare echocardiographic measures of cardiac structure and function in a regional cohort of 17-year-olds born very preterm compared to term-born peers and the influence of perinatal factors. STUDY DESIGN Observational longitudinal cohort study. SUBJECTS A regional cohort of ninety-one 17-year-olds born at <32 weeks gestation compared to sixty-two term-born controls. OUTCOME MEASURES Echocardiographic measures of cardiac structure and function. RESULTS Left ventricular and right atrial volume and left ventricular mass, indexed to body surface area, were significantly smaller in preterm-born adolescents compared to term-born controls even when adjusted for sex. There were no between group differences in cardiac function. Within those born preterm we found a significant association between gestational age and birthweight z-score and measures of cardiac function at 17 years. Within the preterm group, those with a diagnosis of bronchopulmonary dysplasia had higher left ventricular posterior wall thickness, higher mitral deceleration time and lower left atrial area and tricuspid annular plane of systolic excursion. CONCLUSIONS Adolescents born very prematurely, who have received modern intensive care, have measurable differences in heart structure compared to their term-born peers but heart function is preserved. For those born preterm, gestational age, birthweight and bronchopulmonary dysplasia are associated with differences in cardiac function.
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Villalón H, Pantoja S, Vergara N, Caussade MC, Vial MDLÁ, Pinto M, Silva C. SÍNDROME INFLAMATORIO PERINATAL PERSISTENTE DEL PREMATURO EXTREMO. IMPORTANTE FACTOR DE MORBIMORTALIDAD. PARTE II: COMPROMISO MULTISISTÉMICO. REVISTA MÉDICA CLÍNICA LAS CONDES 2021. [DOI: 10.1016/j.rmclc.2021.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Right Ventricular Structure and Function in Young Adults Born Preterm at Very Low Birth Weight. J Clin Med 2021; 10:jcm10214864. [PMID: 34768384 PMCID: PMC8584927 DOI: 10.3390/jcm10214864] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 10/12/2021] [Accepted: 10/20/2021] [Indexed: 12/26/2022] Open
Abstract
Being born preterm (PT, <37 weeks gestation) or at very low birth weight (VLBW, <1500 g) is associated with increased rates of cardiopulmonary disorders in childhood. As survivors age, late cardiac effects, including right ventricular (RV) remodelling and occult pulmonary hypertension are emerging. In this population-based study, we aimed to investigate right heart structure and function in young adults born PT at VLBW compared to normal-weight term-born controls. The New Zealand VLBW Study has followed all infants born in 1986 with birth weight <1500 g. All were born preterm from 24 to 37 weeks. A total of 229 (71% of survivors) had echocardiograms aged 26–30 years which were compared to age-matched, term-born, normal-weight controls (n = 100). Young adults born preterm at very low birth weight exhibited smaller RV dimensions compared to term-born peers. Standard echocardiographic measures of RV function did not differ, but mildly reduced function was detected by RV longitudinal strain. This difference was related to birth weight and gestational age but not lung function or left ventricular function. Echocardiographic strain imaging may be an important tool to detect differences in RV function preterm and VLBW.
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McKay L, Goss KN, Haraldsdottir K, Beshish AG, Barton GP, Palta M, Chesler NC, François CJ, Wieben O, Macdonald JA, Eldridge MW, Watson AM. Decreased ventricular size and mass mediate the reduced exercise capacity in adolescents and adults born premature. Early Hum Dev 2021; 160:105426. [PMID: 34332186 DOI: 10.1016/j.earlhumdev.2021.105426] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 06/18/2021] [Accepted: 07/21/2021] [Indexed: 01/15/2023]
Abstract
BACKGROUND Premature birth is associated with lower levels of cardiorespiratory fitness (CRF) but the underlying mechanisms responsible remain unclear. This study assessed whether differences in cardiac morphology or function mediate differences in CRF among adolescents and young adults born preterm. METHODS Adolescents and young adults born moderately to extremely premature (gestational age ≤ 32 weeks or birth weight < 1500 g) and age-matched term born participants underwent resting cardiac MRI and maximal exercise testing. Mediation analysis assessed whether individual cardiovascular variables accounted for a significant proportion of the difference in maximal aerobic capacity between groups. RESULTS Individuals born preterm had lower VO2max than those born term (41.7 ± 8.6 v 47.5 ± 8.7, p < 0.01). Several variables differed between term and preterm born subjects, including systolic and diastolic blood pressure, mean pulmonary artery pressure, indexed left ventricular end-diastolic volume (LVEDVi), right ventricular end-diastolic volume (RVEDVi), LV mass (LVMi), LV stroke volume index (LVSVi), and LV strain (p < 0.05 for all). Of these variables, LVEDVi, RVEDVi, LVSVi, LVMi, and LV longitudinal strain were significantly related to VO2max (p < 0.05 for all). Significant portions of the difference in VO2max between term and preterm born subjects were mediated by LVEDVi (74.3%, p = 0.010), RVEDVi (50.6%, p = 0.016), and LVMi (43.0%, p = 0.036). CONCLUSIONS Lower levels of CRF in adolescents and young adults born preterm are mediated by differences in LVEDVi, RVEDVi, and LVMi. This may represent greater risk for long-term cardiac morbidity and mortality in preterm born individuals.
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Affiliation(s)
- Lauren McKay
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, United States of America.
| | - Kara N Goss
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Kristin Haraldsdottir
- Department of Pediatrics, Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Arij G Beshish
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Gregory P Barton
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Mari Palta
- Department of Pediatrics, Population Health Sciences and Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Naomi C Chesler
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Pediatrics, Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Christopher J François
- Department of Pediatrics, Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Pediatrics, Radiology, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Oliver Wieben
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Pediatrics, Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Pediatrics, Radiology, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Jacob A Macdonald
- Department of Medical Physics, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Marlowe W Eldridge
- Department of Pediatrics, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States of America; Department of Pediatrics, Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States of America
| | - Andrew M Watson
- Department of Pediatrics, Orthopedics and Rehabilitation, University of Wisconsin-Madison, Madison, WI, United States of America
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Effect of Preterm Birth on Cardiac and Cardiomyocyte Growth and the Consequences of Antenatal and Postnatal Glucocorticoid Treatment. J Clin Med 2021; 10:jcm10173896. [PMID: 34501343 PMCID: PMC8432182 DOI: 10.3390/jcm10173896] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 08/26/2021] [Accepted: 08/26/2021] [Indexed: 12/18/2022] Open
Abstract
Preterm birth coincides with a key developmental window of cardiac growth and maturation, and thus has the potential to influence long-term cardiac function. Individuals born preterm have structural cardiac remodelling and altered cardiac growth and function by early adulthood. The evidence linking preterm birth and cardiovascular disease in later life is mounting. Advances in the perinatal care of preterm infants, such as glucocorticoid therapy, have improved survival rates, but at what cost? This review highlights the short-term and long-term impact of preterm birth on the structure and function of the heart and focuses on the impact of antenatal and postnatal glucocorticoid treatment on the immature preterm heart.
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El-Khuffash A, Lewandowski AJ, Jain A, Hamvas A, Singh GK, Levy PT. Cardiac Performance in the First Year of Age Among Preterm Infants Fed Maternal Breast Milk. JAMA Netw Open 2021; 4:e2121206. [PMID: 34448867 PMCID: PMC8397926 DOI: 10.1001/jamanetworkopen.2021.21206] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
IMPORTANCE There is a beneficial association between human breast milk exposure in the neonatal period and cardiac mechanics in adults who were born preterm. It is unknown whether this benefit is apparent in infants in the first year of age. OBJECTIVE To test the hypothesis that higher consumption of mother's own milk in preterm infants is associated with enhanced cardiac performance during the first year of age. DESIGN, SETTING, AND PARTICIPANTS This cross-sectional study of cardiac and nutritional data at an academic medical center included 80 individuals born preterm and 100 individuals in the control group born full-term. All births were between 2011 and 2013. Two-dimensional echocardiograms were performed at 32 weeks' and 36 weeks' postmenstrual age and at 1 year's corrected age in individuals born preterm and at 1 month and 1 year of age in individuals born full-term. Statistical analysis was performed from January to May 2021. EXPOSURES Consumption of mother's own milk. MAIN OUTCOMES AND MEASURES Main study outcomes included echocardiography measures of right and left ventricle longitudinal strain (function), left ventricle mass index and right ventricular areas (morphology), and pulmonary vascular resistance (pulmonary hemodynamics) at age 1 year. RESULTS Of 180 infants included in the study, 97 (54%) were Black infants and 89 (49%) were female infants. Among the 80 infants born in the preterm cohort, 43 (54%) were female infants and 43 (54%) were Black infants. The median gestational age at birth of the preterm infants was 27.0 weeks (interquartile range, 26.0-28.0 weeks) and the median birth weight was 960 g (interquartile range, 800-1138). For each week of exposure to mother's own milk, preterm infants had greater magnitudes of right ventricular strain (eg, right longitudinal strain: β, 0.021; 95% CI, 0.002-0.041; P < .001) and left ventricular strain (eg, left longitudinal strain: β, 0.065; 95% CI, 0.049-0.080; P = .01), larger right ventricle areas (eg, systolic area: β, 0.026; 95% CI, 0.011-0.042; P = .009), larger left ventricle mass index (β, 0.045; 95% CI, 0.024-0.073; P = .003), and decreased pulmonary vascular resistance (eg, pulmonary artery acceleration time: β, 0.041; 95% CI, 0.018-0.063; P < .001) at 1 year's corrected age, even after accounting for gestational age and common neonatal morbidities. Cardiac values approached those seen in controls born full-term with increased mother's own milk exposure. There were no differences in any of the cardiac indices at 32 weeks' postmenstrual age, but with each week of exposure, right ventricle function (eg, right longitudinal strain: β, 0.016; 95% CI, 0.002-0.031; P < .001) was greater and pulmonary pressured (eg, pulmonary artery acceleration time: β, 0.0032; 95% CI, 0.0013-0.0062; P < .001). CONCLUSIONS AND RELEVANCE This study found that preterm infants with higher consumption of mother's own milk had enhanced cardiac performance at age 1 year, suggesting that mother's own milk consumption may play a dynamic modulator role on cardiac mechanics in preterm-born infants and help in normalization of the preterm cardiac phenotype.
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Affiliation(s)
- Afif El-Khuffash
- Department of Neonatology, The Rotunda Hospital and School of Medicine (Pediatrics), Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe, Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Amish Jain
- Department of Paediatrics, University of Toronto and Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - Aaron Hamvas
- Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Gautam K Singh
- Department of Pediatrics, Washington University School of Medicine, Saint Louis, Missouri
- Department of Pediatrics, Central Michigan University School of Medicine, Children's Hospital of Michigan, Detroit
| | - Philip T Levy
- Department of Pediatrics, Harvard Medical School, Boston, Massachusetts
- Division of Newborn Medicine, Boston Children's Hospital, Boston, Massachusetts
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Lewandowski AJ, Raman B, Bertagnolli M, Mohamed A, Williamson W, Pelado JL, McCance A, Lapidaire W, Neubauer S, Leeson P. Association of Preterm Birth With Myocardial Fibrosis and Diastolic Dysfunction in Young Adulthood. J Am Coll Cardiol 2021; 78:683-692. [PMID: 34384550 PMCID: PMC8363934 DOI: 10.1016/j.jacc.2021.05.053] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/23/2021] [Accepted: 05/18/2021] [Indexed: 02/06/2023]
Abstract
Background Preterm birth affects about 10% of live births worldwide and is associated with cardiac alterations. Animal models of preterm birth suggest that left ventricular functional impairment may be due to an up-regulation of myocardial fibrosis. Objectives The aim of this study was to determine whether diffuse left ventricular fibrosis is evident in young adults born preterm. Methods One hundred one normotensive young adults born preterm (n = 47, mean gestational age 32.8 ± 3.2 weeks) and term (n = 54) were included from YACHT (Young Adult Cardiovascular Health sTudy). Left ventricular structure and function were quantified by cardiovascular magnetic resonance and echocardiography. Intravenous administration of a gadolinium-based contrast agent during cardiovascular magnetic resonance was used to quantify focal myocardial fibrosis on the basis of late gadolinium enhancement and, in combination with T1 mapping, to quantify diffuse myocardial fibrosis on the basis of assessment of myocardial extracellular volume fraction. Results Adults born preterm had smaller left ventricular end-diastolic and stroke volumes, with greater left ventricular mass and wall thickness (P < 0.001). In addition, longitudinal peak systolic strain and diastolic strain rate by both cardiovascular magnetic resonance and echocardiography, and E/A ratio measured by echocardiography, were lower in preterm-born compared to term-born adults (P < 0.05). Extracellular volume fraction was greater in preterm-born compared with term-born adults (27.81% ± 1.69% vs 25.48% ± 1.41%; P < 0.001) and was a significant mediator in the relationship between gestational age and both longitudinal peak diastolic strain rate and E/A ratio. Conclusions Preterm-born young adults have greater extracellular volume fraction in the left ventricle that is inversely related with gestational age and may underlie their diastolic functional impairments.
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Affiliation(s)
- Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, United Kingdom; Oxford Centre for Clinical Magnetic Resonance Research, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom; Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom.
| | - Betty Raman
- Oxford Centre for Clinical Magnetic Resonance Research, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom; Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Mariane Bertagnolli
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, United Kingdom; Hôpital du Sacré-Cœur de Montréal Research Center (CIUSSS Nord-de-l'Île-de-Montréal), School of Physical and Occupational Therapy, McGill University, Montréal, Quebec, Canada
| | - Afifah Mohamed
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, United Kingdom; Department of Diagnostic Imaging & Applied Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Wilby Williamson
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, United Kingdom
| | - Joana Leal Pelado
- Oxford Centre for Clinical Magnetic Resonance Research, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom; Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Angus McCance
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, United Kingdom
| | - Winok Lapidaire
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, United Kingdom
| | - Stefan Neubauer
- Oxford Centre for Clinical Magnetic Resonance Research, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom; Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
| | - Paul Leeson
- Oxford Cardiovascular Clinical Research Facility, University of Oxford, Oxford, United Kingdom; Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom
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Seok H, Oh JH. Hypertrophic Cardiomyopathy in Infants from the Perspective of Cardiomyocyte Maturation. Korean Circ J 2021; 51:733-751. [PMID: 34327880 PMCID: PMC8424452 DOI: 10.4070/kcj.2021.0153] [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: 05/03/2021] [Accepted: 06/08/2021] [Indexed: 11/16/2022] Open
Abstract
Hypertrophic cardiomyopathy (HCM) in infancy is rare and many fulminant cases are fatal. Infantile HCM shows a rapid progressive clinical course and different characteristics compared with late-onset HCM presenting during the prepubertal age. There are also spontaneously resolving phenotypes of HCM that are diagnosed in neonates being treated for bronchopulmonary dysplasia with corticosteroids or in those with other problems related to maternal endocrine diseases. The pathophysiology of infantile HCM has not been well described. Therefore, this review updates the pathophysiology of infantile HCM and includes molecular studies on maturation of cardiomyocytes from a clinician's point of view. Hypertrophic cardiomyopathy (HCM) is characterized by ventricular wall hypertrophy with diastolic dysfunction. Pediatric HCM is distinguished from the adult in many aspects. Most children with HCM do not present clinically until the adolescent period, even when they are born with genetic mutations. Some infants with early-onset HCM present with massive progressive myocardial hypertrophy in the first few months of life, which is often fatal. The mortality of pediatric HCM peaks during the infantile and adolescent periods. These periods roughly correlate with children's growth spurt. Non-sarcomeric causes of HCM are more frequent in pediatric HCM, while sarcomeric causes are more common in adults. From the perspective of cardiac development, the fetal heart has immature cardiomyocytes, which are characterized by proliferation and exit their cell cycles with a decreased regenerative property after birth. In the perinatal period, there is a dynamic change in maturation of cardiomyocytes from immature to mature cells. Infants who are treated with steroids or born to mothers with diabetes or hyperthyroidism often show phenotypes of HCM, which gradually resolve. With remarkable advancement of molecular biology, understanding on maturation of cardiomyocytes has increased. Neonates undergo abrupt environmental changes during the transitional circulation, which is affected by oxygen, metabolic and hormonal fluctuations. Derangement in physiological transition to the normal postnatal environment may influence maturation of proliferative immature cardiomyocytes during early infancy. This article reviews updates of infantile HCM and recent molecular studies related to maturation of cardiomyocytes from the clinical point of view of identifying distinct characteristics of infantile HCM.
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Affiliation(s)
- Heeyoung Seok
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jin Hee Oh
- Department of Pediatrics, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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Frost AL, Suriano K, Aye CYL, Leeson P, Lewandowski AJ. The Immediate and Long-Term Impact of Preeclampsia on Offspring Vascular and Cardiac Physiology in the Preterm Infant. Front Pediatr 2021; 9:625726. [PMID: 34136436 PMCID: PMC8200529 DOI: 10.3389/fped.2021.625726] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 04/06/2021] [Indexed: 12/03/2022] Open
Abstract
Hypertensive disorders of pregnancy, including preeclampsia, affect nearly 10% of all pregnancies and are associated with significant long-term detrimental effects on both maternal and offspring cardiovascular health. Current management of preeclampsia involves timely delivery with the more severe form of disease requiring iatrogenic preterm birth. The effects on the maternal cardiovascular system have been studied extensively; however, less is known about the short- and long-term impacts on offspring cardiovascular health. There is a growing body of evidence suggesting that the offspring of pre-eclamptic pregnancies have an altered cardiac structure and function, along with a unique vascular physiology driven by lower endothelial function. Many of these changes can also be seen in those born preterm even in the absence of pregnancy hypertension. It is difficult to determine the relative contribution of pre-maturity and preeclampsia to the cardiovascular phenotype of those exposed to these pregnancy complications as they are, in many cases, inextricably linked. This review, therefore, focuses specifically on the evidence from clinical studies showing a negative cardiovascular impact of preeclampsia in preterm-born offspring, investigating phenotypic similarities and differences between offspring born preterm to normotensive vs. pre-eclamptic pregnancies. We explore the unique cardiac and vascular alterations in pre-eclamptic offspring born preterm, highlighting knowledge gaps, and potential areas of further research in the field.
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Affiliation(s)
- Annabelle L. Frost
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Katie Suriano
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Christina Y. L. Aye
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, United Kingdom
| | - Paul Leeson
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Adam J. Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
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Lê B, Dahl MJ, Albertine KH, Sutherland MR, Black MJ. Preterm Birth With Neonatal Interventions Accelerates Collagen Deposition in the Left Ventricle of Lambs Without Affecting Cardiomyocyte Development. CJC Open 2021; 3:574-584. [PMID: 34036257 PMCID: PMC8134943 DOI: 10.1016/j.cjco.2020.12.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/20/2020] [Indexed: 12/21/2022] Open
Abstract
Background Adults born preterm (< 37 weeks’ gestation) exhibit altered cardiac growth and are susceptible to cardiac dysfunction. Sheep studies have shown that moderate preterm birth results in maladaptive structural remodelling of the cardiac ventricles. The aim of this study was to examine ventricular structure in lambs born at a greater severity of preterm birth and ventilated postnatally. Methods Former-preterm lambs delivered at 128 days’ gestation, and mechanically ventilated for a week after birth, were compared with unventilated lambs born at term (150 days’ gestation), at 2 months (term: n = 10, former-preterm: n = 8), and 5 months (term: n = 9, former-preterm: n = 8) term-equivalent age. The right ventricle and left ventricle plus septum were analysed using immunohistochemistry, histology, and stereology. Results Cardiomyocyte number, cross-sectional area, proliferation, and apoptosis were not affected by preterm birth or age. Left ventricle plus septum interstitial collagen levels increased with age (P = 0.0015) and were exacerbated by preterm birth (P = 0.0006; 2 months term: 0.57% ± 0.07%, former-preterm: 1.44% ± 0.18%; 5 months term: 1.37% ± 0.25%, former-preterm: 2.15% ± 0.31%). Right ventricle interstitial collagen levels increased with age (P = 0.012) but were not affected by preterm birth. Conclusion This study is the first to explore the effect of preterm birth combined with modern neonatal interventions on the ventricular myocardium in lambs. There was no adverse impact on cardiomyocyte growth in early postnatal life. Of concern, however, there was increased collagen deposition in the preterm hearts, which has the potential to induce cardiac dysfunction, especially if it becomes exaggerated with ageing.
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Affiliation(s)
- Bianca Lê
- Department of Anatomy and Developmental Biology and Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Mar Janna Dahl
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Kurt H Albertine
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Megan R Sutherland
- Department of Anatomy and Developmental Biology and Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Mary Jane Black
- Department of Anatomy and Developmental Biology and Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
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Left Ventricle Phenotyping Utilizing Tissue Doppler Imaging in Premature Infants with Varying Severity of Bronchopulmonary Dysplasia. J Clin Med 2021; 10:jcm10102211. [PMID: 34065264 PMCID: PMC8160781 DOI: 10.3390/jcm10102211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/10/2021] [Accepted: 05/14/2021] [Indexed: 12/16/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is characterized by alveolar-capillary simplification and is associated with pulmonary hypertension (PH) in preterm infants. The contribution of left ventricle (LV) disease towards this severe BPD-PH phenotype is not well established. We aimed to describe the longitudinal trajectory of the LV function as measured by tissue Doppler imaging (TDI) and its association with BPD-PH. We retrospectively assessed prospectively acquired clinical and echocardiographic data from 77 preterm infants born between 2011 and 2013. We characterized the LV function by measuring systolic and diastolic myocardial velocities (s’, e’, a’), isovolumetric relaxation time (IVRT), and myocardial performance index with TDI at three time periods from 32 and 36 weeks, postmenstrual age through one year of age. We also measured post systolic motion (PSM), a marker of myocardial dysfunction that results from asynchronous movement of the ventricular walls, and not previously described in preterm infants. Patients were stratified into groups according to BPD severity and the presence of PH and compared over time. Conventional TDI measures of the LV function were similar between groups, but the septal PSM was significantly prolonged over the first year of age in patients with BPD-PH. PSM provides a novel objective way to assess the hemodynamic impact of lung and pulmonary vascular disease severity on LV function in preterm infants with BPD and PH.
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Greer C, Troughton RW, Adamson PD, Harris SL. Preterm birth and cardiac function in adulthood. Heart 2021; 108:172-177. [PMID: 34016695 DOI: 10.1136/heartjnl-2020-318241] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2021] [Revised: 04/18/2021] [Accepted: 04/21/2021] [Indexed: 11/04/2022] Open
Abstract
Preterm birth affects 1 in 10 pregnancies worldwide, with increasing survival rates over the last 30 years. However, as this new generation of long-term survivors approaches middle age, recent studies have revealed increased cardiovascular risk factors and higher rates of ischaemic heart disease and heart failure. Cardiovascular imaging has identified smaller cardiac chamber size, changes in myocardial mass and impaired ventricular function, particularly under physiological stress. Accordingly, this population should be recognised as having a higher risk of heart failure as they age. In this review, we present current evidence for increased rates of heart failure and evidence of alterations in cardiac structure and function in those born preterm. We discuss potential mechanisms to explain this risk including greater frequency of co-morbidities known to be associated with heart failure. We also explore potential mechanistic links specific to the preterm-born population, including the impact of premature birth on myocardial and vascular development and the effects of perinatal haemodynamic changes and chronic lung disease on the developing heart. We highlight gaps in our knowledge and consider implications for patient management relevant to the adult physician.
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Affiliation(s)
- Charlotte Greer
- Cardiology Department, Christchurch Hospital, Christchurch, New Zealand
| | - Richard W Troughton
- Cardiology Department, Christchurch Hospital, Christchurch, New Zealand.,Christchurch Heart Institute, University of Otago, Christchurch, New Zealand
| | - Philip D Adamson
- Christchurch Heart Institute, University of Otago, Christchurch, New Zealand.,Centre for Cardiovascular Science, The University of Edinburgh, Edinburgh, UK
| | - Sarah L Harris
- Department of Pediatrics, University of Otago, Christchurch, New Zealand
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Abstract
This study aimed to describe the variety of etiologies currently identified in infants with cardiac hypertrophy (CH) and investigate whether there is a relation with hyperinsulinism, echocardiographic characteristics and prognosis. This retrospective cohort study included infants born between 2005 and 2018 with CH measured by echocardiography [interventricular septum (IVS) and/or left ventricular posterior wall (LVPW) thickness with Z-score ≥ 2.0]. Children with congenital heart disease or hypertension were excluded. Underlying diagnosis, echocardiographic and follow-up data were extracted from patient files. Seventy-one infants with CH were included. An underlying cause of CH was identified in two-thirds (n = 47). Most common etiologies of CH were malformation syndromes (n = 23, including Noonan n = 12) and maternal diabetes mellitus (n = 13). Less common causes were congenital hyperinsulinism (n = 3), metabolic- (n = 5), sarcomeric- (n = 2) and neuromuscular disease (n = 1). In half of the identified causes (n = 22) an association with hyperinsulinism was described, including maternal diabetes mellitus (n = 13), malformation syndromes with insulin resistance (n = 6) and congenital hyperinsulinism (n = 3). CH associated with hyperinsulinism was echocardiographically characterized by lower LVPW thickness, higher IVS:LVPW ratio and more frequent sole involvement of the IVS (all, p ≤ 0.02). CH associated with hyperinsulinism normalized more often (41 vs. 0%) with lower mortality rates (14 vs. 44%) compared to CH not associated with hyperinsulinism (all, p ≤ 0.03). Nowadays, an etiology of CH can be identified in the majority of infants. The development of CH is often associated with hyperinsulinism which is mainly characterized by focal hypertrophy of the IVS on echocardiography. Prognosis depends on the underlying cause and is more favorable in CH associated with hyperinsulinism.
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Lapidaire W, Clark C, Fewtrell MS, Lucas A, Leeson P, Lewandowski AJ. The Preterm Heart-Brain Axis in Young Adulthood: The Impact of Birth History and Modifiable Risk Factors. J Clin Med 2021; 10:jcm10061285. [PMID: 33808886 PMCID: PMC8003804 DOI: 10.3390/jcm10061285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/11/2021] [Accepted: 03/16/2021] [Indexed: 11/20/2022] Open
Abstract
People born preterm are at risk of developing both cardiac and brain abnormalities. We aimed to investigate whether cardiovascular physiology may directly affect brain structure in young adulthood and whether cardiac changes are associated with modifiable biomarkers. Forty-eight people born preterm, followed since birth, underwent cardiac MRI at age 25.1 ± 1.4 years and brain MRI at age 33.4 ± 1.0 years. Term born controls were recruited at both time points for comparison. Cardiac left and right ventricular stroke volume, left and right ventricular end diastolic volume and right ventricular ejection fraction were significantly different between preterm and term born controls and associated with subcortical brain volumes and fractional anisotropy in the corpus callosum in the preterm group. This suggests that cardiovascular abnormalities in young adults born preterm are associated with potentially adverse future brain health. Associations between left ventricular stroke volume indexed to body surface area and right putamen volumes, as well as left ventricular end diastolic length and left thalamus volumes, remained significant when adjusting for early life factors related to prematurity. Although no significant associations were found between modifiable biomarkers and cardiac physiology, this highlights that cardiovascular health interventions may also be important for brain health in preterm born adults.
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Affiliation(s)
- Winok Lapidaire
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK
- UCL GOS Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Chris Clark
- UCL GOS Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Mary S Fewtrell
- UCL GOS Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Alan Lucas
- UCL GOS Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Paul Leeson
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK
| | - Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford OX3 9DU, UK
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Dartora DR, Flahault A, Luu TM, Cloutier A, Simoneau J, White M, Lapointe A, Villeneuve A, Bigras JL, Altit G, Nuyt AM. Association of Bronchopulmonary Dysplasia and Right Ventricular Systolic Function in Young Adults Born Preterm. Chest 2021; 160:287-296. [PMID: 33549599 DOI: 10.1016/j.chest.2021.01.079] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 12/05/2020] [Accepted: 01/16/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Adults born preterm are at a higher risk of cardiopulmonary disease and premature death. Preterm birth is associated with abnormalities in right ventricular (RV) structure and function, but the impact of bronchopulmonary dysplasia (BPD), a common complication of extremely preterm birth, on these parameters remains unknown. RESEARCH QUESTION Are preterm birth and BPD associated with alterations in RV structure and function in early adulthood? STUDY DESIGN AND METHODS Echocardiographic and spirometry data were obtained from the Health of Adults Born Preterm Investigation (HAPI). RV structure and performance were evaluated by using echocardiography, and respiratory function was assessed by using spirometry. RESULTS The study comprised 86 young adults born preterm before 30 weeks of gestation, including 28 with moderate to severe BPD, and 85 adults of the same age born full term. Individuals were assessed at a mean age of 23 years. RV systolic function was altered in the preterm group, with lower tricuspid annular plane systolic excursion and lower RV s' and RV outflow tract velocity time integral values, especially in those born preterm with BPD. Nine (36%) participants born preterm with BPD, six (13%) participants born preterm without BPD, and six (8%) participants born full term had a tricuspid annular plane systolic excursion value < 16 mm, a marker of RV systolic dysfunction (P value for the comparison between preterm no BPD and BPD, .032). No difference was found in RV diastolic function or estimates of pulmonary artery pressure between groups. Although respiratory function was altered in those born preterm, and more so in the case of BPD, no association was observed between spirometry indices of respiratory function and RV systolic function. INTERPRETATION Preterm birth is associated in adulthood with alterations in RV systolic function, which are more pronounced in the case of BPD. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov; No.: NCT03261609; URL: www.clinicaltrials.gov.
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Affiliation(s)
- Daniela Ravizzoni Dartora
- Sainte-Justine University Hospital Research Center Sainte-Justine University Hospital, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Adrien Flahault
- Sainte-Justine University Hospital Research Center Sainte-Justine University Hospital, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Thuy Mai Luu
- Sainte-Justine University Hospital Research Center Sainte-Justine University Hospital, Faculty of Medicine, University of Montreal, Montreal, QB, Canada; Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Anik Cloutier
- Sainte-Justine University Hospital Research Center Sainte-Justine University Hospital, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Jessica Simoneau
- Division of Neonatology, Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QB, Canada
| | - Michel White
- Montreal Heart Institute, Department of Medicine, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Anie Lapointe
- Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Andréanne Villeneuve
- Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Jean-Luc Bigras
- Sainte-Justine University Hospital Research Center Sainte-Justine University Hospital, Faculty of Medicine, University of Montreal, Montreal, QB, Canada; Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, QB, Canada
| | - Gabriel Altit
- Division of Neonatology, Montreal Children's Hospital, Department of Pediatrics, McGill University, Montreal, QB, Canada
| | - Anne Monique Nuyt
- Sainte-Justine University Hospital Research Center Sainte-Justine University Hospital, Faculty of Medicine, University of Montreal, Montreal, QB, Canada; Department of Pediatrics, Faculty of Medicine, University of Montreal, Montreal, QB, Canada.
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Le N, Phad N, de Waal K. Cardiac remodeling during the neonatal intensive care period; a window of opportunity for early prevention of heart failure? Early Hum Dev 2020; 151:105168. [PMID: 32889167 DOI: 10.1016/j.earlhumdev.2020.105168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 08/23/2020] [Accepted: 08/25/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND There is growing evidence that preterm birth is a risk factor for early heart failure as a result of cardiac remodeling during a critical period of growth and development. The aim of this study was to explore if cardiac remodeling can be detected very early after preterm birth, and if present, if those remodeling changes persist until discharge. METHODS Echocardiography parameters of left ventricular geometry and function were prospectively obtained with echocardiography in preterm infants <30 weeks gestation at postnatal day 3 and at 36 weeks postmenstrual age (PMA). Findings were compared to available data of healthy fetuses and cardiac remodeling was classified based on changes in left ventricular volume and/or mass. RESULTS 65 (37 male) preterm infants were analysed. Three days after birth, 27.7% of infants had abnormal LV geometry, with immaturity and fetal growth restriction as risk factors for these early cardiac remodeling changes. At 36 weeks PMA, after a median period of 9 weeks of neonatal intensive care, 69.2% had abnormal cardiac geometry which could be classified as dilated hypertrophic remodeling (50.0%), dilated remodeling (11.5%) and hypertrophic remodeling (7.7%). CONCLUSION Cardiac remodeling changes can be detected very early after preterm birth. However, most changes take place during the neonatal intensive care period. The findings of this study could assist in identifying a group where an early and short-term intervention has the potential to prevent a pathway of abnormal cardiac development.
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Affiliation(s)
- Nhu Le
- Radboud University Medical Centre, Nijmegen, the Netherlands
| | - Nilkant Phad
- Department of Neonatology, John Hunter Children's Hospital and University of Newcastle, Newcastle, NSW, Australia
| | - Koert de Waal
- Department of Neonatology, John Hunter Children's Hospital and University of Newcastle, Newcastle, NSW, Australia.
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43
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Bates ML, Levy PT, Nuyt AM, Goss KN, Lewandowski AJ, McNamara PJ. Adult Cardiovascular Health Risk and Cardiovascular Phenotypes of Prematurity. J Pediatr 2020; 227:17-30. [PMID: 32931771 DOI: 10.1016/j.jpeds.2020.09.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 08/25/2020] [Accepted: 09/09/2020] [Indexed: 02/07/2023]
Affiliation(s)
- Melissa L Bates
- Department of Health and Human Physiology, University of Iowa, Iowa City, IA; Division of Neonatology, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA
| | - Philip T Levy
- Division of Newborn Medicine, Department of Pediatrics, Boston Children's Hospital, Harvard Medical School, Boston, MA.
| | - Anne Monique Nuyt
- Division of Neonatology, Department of Pediatrics, CHU Sainte-Justine, Faculty of Medicine, Université de Montréal, Montréal, Quebec, Canada
| | - Kara N Goss
- Department of Pediatrics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI; Department of Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI
| | - Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Patrick J McNamara
- Division of Neonatology, Stead Family Department of Pediatrics, University of Iowa, Iowa City, IA
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Ding X, Wang S, Wang Y, Yang J, Bao N, Liu J, Zhang Z. Neonatal Heart Responds to Pressure Overload With Differential Alterations in Various Cardiomyocyte Maturation Programs That Accommodate Simultaneous Hypertrophy and Hyperplasia. Front Cell Dev Biol 2020; 8:596960. [PMID: 33330485 PMCID: PMC7710899 DOI: 10.3389/fcell.2020.596960] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 10/26/2020] [Indexed: 12/16/2022] Open
Abstract
Pressure overload is one of the pathophysiological conditions commonly associated with right-sided congenital heart disease (CHD). Patients suffer from this condition right after birth. However, little is known about how neonatal heart reacts to it. We have previously established a pulmonary artery banding (PAB) model in neonatal rat. Here we show that PAB accelerated transition of mononuclear cardiomyocytes into multinucleated cells to promote hypertrophic growth in neonatal heart. The elevated afterload significantly increased the mitotic activities of neonatal cardiomyocytes. Consistent with the proliferative potential, the elevated pressure overload also increased cytokinetic marker counts of cardiomyocytes. Using cardiomyocyte-specific lineage tracing, we noticed a clonal expansion of rare unlabeled cardiomyocytes in the PAB group, revealing a subgroup of cardiomyocytes with a strong capability of proliferation. In addition, PAB hearts at post-banding day 7 didn’t have the accumulation of macrophages, which is an immune response essential for neonatal heart regeneration in injury models. Transcriptomic analyses revealed that neonatal PAB induced an expression profile featuring both cardiomyocyte hypertrophy, such as highly activated translation, oxidative phosphorylation, and mitochondrial biogenesis programs etc., and immature cardiomyocyte, such as enhanced cell cycle activities and glycolytic metabolism, down-regulated cytoskeleton and ion channel gene expression, and maintenance of fetal-specific sarcomeric isoforms etc. It indicates that pressure overload has differential impacts on various cardiomyocyte maturation (CM) programs that may contribute to the concurrent cardiomyocyte hypertrophy and hyperplasia. The bivalent status of transcriptional profile highlights the plasticity of neonatal cardiomyocytes that can be exploited to adapt the postnatal environment.
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Affiliation(s)
- Xiaoning Ding
- Shanghai Children's Medical Center, Pediatric Translational Medicine Institute and Shanghai Pediatric Congenital Heart Disease Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shoubao Wang
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ye Wang
- Shanghai Children's Medical Center, Pediatric Translational Medicine Institute and Shanghai Pediatric Congenital Heart Disease Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Junjie Yang
- Shanghai Children's Medical Center, Pediatric Translational Medicine Institute and Shanghai Pediatric Congenital Heart Disease Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Nan Bao
- Department of Pediatric Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jinfen Liu
- Department of Thoracic and Cardiovascular Surgery, Shanghai Children's Medical Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhen Zhang
- Shanghai Children's Medical Center, Pediatric Translational Medicine Institute and Shanghai Pediatric Congenital Heart Disease Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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45
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Le B, Ferreira P, Merchant S, Zheng G, Sutherland MR, Dahl MJ, Albertine KH, Black MJ. Microarchitecture of the hearts in term and former-preterm lambs using diffusion tensor imaging. Anat Rec (Hoboken) 2020; 304:803-817. [PMID: 33015923 DOI: 10.1002/ar.24516] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 05/31/2020] [Accepted: 06/30/2020] [Indexed: 12/13/2022]
Abstract
Diffusion tensor imaging (DTI) is an MRI technique that can be used to map cardiomyocyte tracts and estimate local cardiomyocyte and sheetlet orientation within the heart. DTI measures diffusion distances of water molecules within the myocardium, where water diffusion generally occurs more freely along the long axis of cardiomyocytes and within the extracellular matrix, but is restricted by cell membranes such that transverse diffusion is limited. DTI can be undertaken in fixed hearts and it allows the three-dimensional mapping of the cardiac microarchitecture, including cardiomyocyte organization, within the whole heart. The objective of this study was to use DTI to compare the cardiac microarchitecture and cardiomyocyte organization in archived fixed left ventricles of lambs that were born either preterm (n = 5) or at term (n = 7), at a postnatal timepoint equivalent to about 6 years of age in children. Although the findings support the feasibility of retrospective DTI scanning of fixed hearts, several hearts were excluded from DTI analysis because of poor scan quality, such as ghosting artifacts. The preliminary findings from viable DTI scans (n = 3/group) suggest that the extracellular compartment is altered and that there is an immature microstructural phenotype early in postnatal life in the LV of lambs born preterm. Our findings support a potential time-efficient imaging role for DTI in detecting abnormal changes in the microstructure of fixed hearts of former-preterm neonates, although further investigation into factors that affect scan quality is required.
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Affiliation(s)
- Bianca Le
- Department of Anatomy and Developmental Biology and Biomedicine Discovery Institute, Monash University, Victoria, Australia
| | | | - Samer Merchant
- Department of Bioengineering, University of Utah, Salt Lake City, Utah, USA
| | - Gang Zheng
- Monash Biomedical Imaging, Monash University, Victoria, Australia
| | - Megan R Sutherland
- Department of Anatomy and Developmental Biology and Biomedicine Discovery Institute, Monash University, Victoria, Australia
| | - Mar Janna Dahl
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Kurt H Albertine
- Department of Pediatrics, University of Utah, Salt Lake City, Utah, USA
| | - Mary Jane Black
- Department of Anatomy and Developmental Biology and Biomedicine Discovery Institute, Monash University, Victoria, Australia
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Harris SL, Bray H, Troughton R, Elliott J, Frampton C, Horwood J, Darlow BA. Cardiovascular Outcomes in Young Adulthood in a Population-Based Very Low Birth Weight Cohort. J Pediatr 2020; 225:74-79.e3. [PMID: 32553866 DOI: 10.1016/j.jpeds.2020.06.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 06/03/2020] [Accepted: 06/06/2020] [Indexed: 12/30/2022]
Abstract
OBJECTIVES To assess differences in left heart structure and function, and endothelial function in a national cohort of very low birth weight (VLBW) young adults and term-born controls. STUDY DESIGN The New Zealand VLBW study is a prospective, population-based, longitudinal cohort study which included all infants born <1500 g in 1986. The VLBW cohort (n = 229; 71% of survivors) and term-born controls (n = 100), were assessed at age 26-30 years. Measures of left heart structure and function were evaluated by echocardiography, vascular function was assessed using blood pressure, reactive hyperemia index, and arterioventricular coupling by calculating left ventricular (LV) and arterial elastance. RESULTS Compared with controls, those born VLBW had smaller LVs, even when indexed for body surface area (mean LV mass, 89.7 ± 19.3 g/m2 vs 95.0 ± 22.3 g/m2 [P = .03]; LV end-diastolic volume, 58.3 ± 10.9 mL/m2 vs 62.4 ± 12.4 mL/m2 [P = .002]; and LV end-systolic volume, 20.8 ± 4.9 mL/m2 vs 22.6 ± 5.8 mL/m2 [P = .004]). VLBW participants had lower stroke volume (median, 37.2 mL/m2 [IQR, 33-42 mL/m2] vs median, 40.1 mL/m2 [IQR, 34-45 mL/m2]; P = .0059) and cardiac output (mean, 4.8 ± 1.2 L/min vs 5.1 ± 1.4 L/min; P = .03), but there was no difference in ejection fraction. The VLBW group had higher LV elastance (3.37 ± 0.88 mm Hg/mL vs 2.86 ± 0.75 mm Hg/mL; P < .0001) and arterial elastance (1.84 ± 0.4 vs 1.6 ± 0.4; P < .0001) and lower reactive hyperemia index (0.605 ± 0.28 vs 0.688 ± 0.31; P = .041). These measures were influenced by birth weight and sex, but we found limited associations with other perinatal factors. CONCLUSIONS Being born preterm and VLBW is associated with differences in cardiovascular structure and function in adulthood. This population may be more vulnerable to cardiovascular pathology as they age. TRIAL REGISTRATION Australian Clinical Trials Registry ACTRN12612000995875.
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Affiliation(s)
- Sarah L Harris
- Department of Pediatrics, University of Otago, Christchurch, New Zealand.
| | - Helen Bray
- Christchurch Women's Hospital, Christchurch, New Zealand
| | - Richard Troughton
- Department of Medicine, University of Otago, Christchurch, New Zealand; Department of Cardiology, Christchurch Hospital, Christchurch, New Zealand
| | - John Elliott
- Department of Medicine, University of Otago, Christchurch, New Zealand; Department of Cardiology, Christchurch Hospital, Christchurch, New Zealand
| | - Chris Frampton
- Department of Medicine, University of Otago, Christchurch, New Zealand; Department of Psychological Medicine, University of Otago, Christchurch, New Zealand
| | - John Horwood
- Department of Psychological Medicine, University of Otago, Christchurch, New Zealand
| | - Brian A Darlow
- Department of Pediatrics, University of Otago, Christchurch, New Zealand
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Jiang B, Guo N, Ge Y, Zhang L, Oudkerk M, Xie X. Development and application of artificial intelligence in cardiac imaging. Br J Radiol 2020; 93:20190812. [PMID: 32017605 DOI: 10.1259/bjr.20190812] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
In this review, we describe the technical aspects of artificial intelligence (AI) in cardiac imaging, starting with radiomics, basic algorithms of deep learning and application tasks of algorithms, until recently the availability of the public database. Subsequently, we conducted a systematic literature search for recently published clinically relevant studies on AI in cardiac imaging. As a result, 24 and 14 studies using CT and MRI, respectively, were included and summarized. From these studies, it can be concluded that AI is widely applied in cardiac applications in the clinic, including coronary calcium scoring, coronary CT angiography, fractional flow reserve CT, plaque analysis, left ventricular myocardium analysis, diagnosis of myocardial infarction, prognosis of coronary artery disease, assessment of cardiac function, and diagnosis and prognosis of cardiomyopathy. These advancements show that AI has a promising prospect in cardiac imaging.
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Affiliation(s)
- Beibei Jiang
- Radiology Department, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Rd.100, Shanghai 200080, China
| | - Ning Guo
- Shukun (Beijing) Technology Co, Ltd., Jinhui Bd, Qiyang Rd, Beijing 100102, China
| | - Yinghui Ge
- Radiology Department, Central China Fuwai Hospital, Fuwai Avenue 1, Zhengzhou 450046, China
| | - Lu Zhang
- Radiology Department, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Rd.100, Shanghai 200080, China
| | - Matthijs Oudkerk
- Institute for DiagNostic Accuracy, Prof. Wiersma Straat 5, 9713GH Groningen, The Netherlands.,University of Groningen, Faculty of Medical Sciences, 9700AB Groningen, The Netherlands
| | - Xueqian Xie
- Radiology Department, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Haining Rd.100, Shanghai 200080, China
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Maturational patterns of left ventricular rotational mechanics in pre-term infants through 1 year of age. Cardiol Young 2020; 30:1238-1246. [PMID: 32665043 DOI: 10.1017/s1047951120001912] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Pre-mature birth impacts left ventricular development, predisposing this population to long-term cardiovascular risk. The aims of this study were to investigate maturational changes in rotational properties from the neonatal period through 1 year of age and to discern the impact of cardiopulmonary complications of pre-maturity on these measures. METHODS Pre-term infants (<29 weeks at birth, n = 117) were prospectively enrolled and followed to 1-year corrected age. Left ventricular basal and apical rotation, twist, and torsion were measured by two-dimensional speckle-tracking echocardiography and analysed at 32 and 36 weeks post-menstrual age and 1-year corrected age. A mixed random effects model with repeated measures analysis was used to compare rotational mechanics over time. Torsion was compared in infants with and without complications of cardiopulmonary diseases of pre-maturity, specifically bronchopulmonary dysplasia, pulmonary hypertension, and patent ductus arteriosus. RESULTS Torsion decreased from 32 weeks post-menstrual age to 1-year corrected age in all pre-term infants (p < 0.001). The decline from 32 to 36 weeks post-menstrual age was more pronounced in infants with cardiopulmonary complications, but was similar to healthy pre-term infants from 36 weeks post-menstrual age to 1-year corrected age. The decline was due to directional and magnitude changes in apical rotation over time (p < 0.05). CONCLUSION This study tracks maturational patterns of rotational mechanics in pre-term infants and reveals torsion declines from the neonatal period through 1 year. Cardiopulmonary diseases of pre-maturity may negatively impact rotational mechanics during the neonatal period, but the myocardium recovers by 1-year corrected age.
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49
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Telles F, McNamara N, Nanayakkara S, Doyle MP, Williams M, Yaeger L, Marwick TH, Leeson P, Levy PT, Lewandowski AJ. Changes in the Preterm Heart From Birth to Young Adulthood: A Meta-analysis. Pediatrics 2020; 146:peds.2020-0146. [PMID: 32636236 DOI: 10.1542/peds.2020-0146] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/08/2020] [Indexed: 11/24/2022] Open
Abstract
CONTEXT Preterm birth is associated with incident heart failure in children and young adults. OBJECTIVE To determine the effect size of preterm birth on cardiac remodeling from birth to young adulthood. DATA SOURCES Data sources include Medline, Embase, Scopus, Cochrane databases, and clinical trial registries (inception to March 25, 2020). STUDY SELECTION Studies in which cardiac phenotype was compared between preterm individuals born at <37 weeks' gestation and age-matched term controls were included. DATA EXTRACTION Random-effects models were used to calculate weighted mean differences with corresponding 95% confidence intervals. RESULTS Thirty-two observational studies were included (preterm = 1471; term = 1665). All measures of left ventricular (LV) and right ventricular (RV) systolic function were lower in preterm neonates, including LV ejection fraction (P = .01). Preterm LV ejection fraction was similar from infancy, although LV stroke volume index was lower in young adulthood. Preterm LV peak early diastolic tissue velocity was lower throughout development, although preterm diastolic function worsened with higher estimated filling pressures from infancy. RV longitudinal strain was lower in preterm-born individuals of all ages, proportional to the degree of prematurity (R 2 = 0.64; P = .002). Preterm-born individuals had persistently smaller LV internal dimensions, lower indexed LV end-diastolic volume in young adulthood, and an increase in indexed LV mass, compared with controls, of 0.71 g/m2 per year from childhood (P = .007). LIMITATIONS The influence of preterm-related complications on cardiac phenotype could not be fully explored. CONCLUSIONS Preterm-born individuals have morphologic and functional cardiac impairments across developmental stages. These changes may make the preterm heart more vulnerable to secondary insults, potentially underlying their increased risk of early heart failure.
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Affiliation(s)
- Fernando Telles
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom.,Heart Failure Research Group, Baker Heart and Diabetes Institute, Melbourne, Australia.,Royal Prince Alfred Hospital, Sydney, Australia
| | | | - Shane Nanayakkara
- Heart Failure Research Group, Baker Heart and Diabetes Institute, Melbourne, Australia.,Department of Cardiovascular Medicine, The Alfred Hospital, Melbourne, Australia
| | | | | | - Lauren Yaeger
- Bernard Becker Medical Library, School of Medicine, Washington University in St Louis, St Louis, Missouri; and
| | - Thomas H Marwick
- Heart Failure Research Group, Baker Heart and Diabetes Institute, Melbourne, Australia
| | - Paul Leeson
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Philip T Levy
- Boston Children's Hospital and Harvard Medical School, Harvard University, Boston, Massachusetts
| | - Adam J Lewandowski
- Oxford Cardiovascular Clinical Research Facility, Division of Cardiovascular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom;
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Preterm birth and sustained inflammation: consequences for the neonate. Semin Immunopathol 2020; 42:451-468. [PMID: 32661735 PMCID: PMC7508934 DOI: 10.1007/s00281-020-00803-2] [Citation(s) in RCA: 118] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 06/24/2020] [Indexed: 12/15/2022]
Abstract
Almost half of all preterm births are caused or triggered by an inflammatory process at the feto-maternal interface resulting in preterm labor or rupture of membranes with or without chorioamnionitis (“first inflammatory hit”). Preterm babies have highly vulnerable body surfaces and immature organ systems. They are postnatally confronted with a drastically altered antigen exposure including hospital-specific microbes, artificial devices, drugs, nutritional antigens, and hypoxia or hyperoxia (“second inflammatory hit”). This is of particular importance to extremely preterm infants born before 28 weeks, as they have not experienced important “third-trimester” adaptation processes to tolerate maternal and self-antigens. Instead of a balanced adaptation to extrauterine life, the delicate co-regulation between immune defense mechanisms and immunosuppression (tolerance) to allow microbiome establishment is therefore often disturbed. Hence, preterm infants are predisposed to sepsis but also to several injurious conditions that can contribute to the onset or perpetuation of sustained inflammation (SI). This is a continuing challenge to clinicians involved in the care of preterm infants, as SI is regarded as a crucial mediator for mortality and the development of morbidities in preterm infants. This review will outline the (i) role of inflammation for short-term consequences of preterm birth and (ii) the effect of SI on organ development and long-term outcome.
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