Helen Christou | Education
Medical School
Aristotelian University of Thessaloniki
1988, Thessaloniki, Greece
Residency
Pediatrics
Hospital for Infectious Diseases
1989, Thessaloniki, Greece
Internship
Beth Israel Deaconess Medical Center
1990, Boston, MA
Residency
Pediatrics
Beth Israel Medical Center
1992, New York, MA
Fellowship
Joint Program in Neonatology
Harvard Medical School
1996, Boston, MA
Helen Christou | Certifications
- American Board of Pediatrics (Neonatal-Perinatal Medicine)
Helen Christou | Publications
A narrative review of the clinical applications of renal NIRS and integration with cerebral NIRS in the NICU. J Perinatol. 2025 Apr 15. View A narrative review of the clinical applications of renal NIRS and integration with cerebral NIRS in the NICU. Abstract
Impact of persistent pulmonary hypertension on cerebral oxygenation in infants with neonatal encephalopathy. Pediatr Res. 2024 Nov 07. View Impact of persistent pulmonary hypertension on cerebral oxygenation in infants with neonatal encephalopathy. Abstract
Stress Granule Assembly in Pulmonary Arterial Hypertension. Cells. 2024 10 30; 13(21). View Stress Granule Assembly in Pulmonary Arterial Hypertension. Abstract
Adult and neonatal models of chemogenetic heart failure caused by oxidative stress. J Clin Invest. 2024 Mar 14; 134(9). View Adult and neonatal models of chemogenetic heart failure caused by oxidative stress. Abstract
Maternal Obesity Modulates Cord Blood Concentrations of Proprotein Convertase Subtilisin/Kexin-type 9 Levels. J Endocr Soc. 2024 Feb 19; 8(4):bvae031. View Maternal Obesity Modulates Cord Blood Concentrations of Proprotein Convertase Subtilisin/Kexin-type 9 Levels. Abstract
Pericytes contribute to pulmonary vascular remodeling via HIF2a signaling. EMBO Rep. 2024 Feb; 25(2):616-645. View Pericytes contribute to pulmonary vascular remodeling via HIF2a signaling. Abstract
Single center experience with first-intention high-frequency jet vs. volume-targeted ventilation in extremely preterm neonates. Front Pediatr. 2023; 11:1326668. View Single center experience with first-intention high-frequency jet vs. volume-targeted ventilation in extremely preterm neonates. Abstract
Proceedings of the 15th International Newborn Brain Conference: Fetal and/or neonatal brain development, both normal and abnormal. J Neonatal Perinatal Med. 2024; 17(3):S285-S316. View Proceedings of the 15th International Newborn Brain Conference: Fetal and/or neonatal brain development, both normal and abnormal. Abstract
Proceedings of the 15th International Newborn Brain Conference: Other forms of brain monitoring, such as NIRS, fMRI, biochemical, etc. J Neonatal Perinatal Med. 2024; 17(3):S393-S419. View Proceedings of the 15th International Newborn Brain Conference: Other forms of brain monitoring, such as NIRS, fMRI, biochemical, etc. Abstract
Pneumoprotein CC16 in the Umbilical Cord Blood of Preterm Neonates. Am J Perinatol. 2024 05; 41(S 01):e3367-e3373. View Pneumoprotein CC16 in the Umbilical Cord Blood of Preterm Neonates. Abstract
Predictors of successful extubation from volume-targeted ventilation in extremely preterm neonates. J Perinatol. 2024 02; 44(2):250-256. View Predictors of successful extubation from volume-targeted ventilation in extremely preterm neonates. Abstract
Pulmonary Hypertension in Infants and Children with Vein of Galen Malformation and Association with Clinical Outcomes. J Pediatr. 2023 07; 258:113404. View Pulmonary Hypertension in Infants and Children with Vein of Galen Malformation and Association with Clinical Outcomes. Abstract
Proceedings of the 14th International Newborn Brain Conference: Other forms of brain monitoring, such as NIRS, fMRI, biochemical, etc. J Neonatal Perinatal Med. 2023; 16(s1):S63-S73. View Proceedings of the 14th International Newborn Brain Conference: Other forms of brain monitoring, such as NIRS, fMRI, biochemical, etc. Abstract
Maternal diabetes and the role of neonatal reticulocyte hemoglobin content as a biomarker of iron status in the perinatal period. Front Endocrinol (Lausanne). 2022; 13:1011897. View Maternal diabetes and the role of neonatal reticulocyte hemoglobin content as a biomarker of iron status in the perinatal period. Abstract
Skeletal Muscle Dysfunction in Experimental Pulmonary Hypertension. Int J Mol Sci. 2022 Sep 18; 23(18). View Skeletal Muscle Dysfunction in Experimental Pulmonary Hypertension. Abstract
Changes, Challenges, and Variations in Neonatal-Perinatal Medicine Fellowship: A View from the Program Directors. Am J Perinatol. 2024 05; 41(S 01):e163-e173. View Changes, Challenges, and Variations in Neonatal-Perinatal Medicine Fellowship: A View from the Program Directors. Abstract
Pleiotropic Effects of Pyruvate Kinase M2 in Right Ventricular Failure and Pulmonary Arterial Hypertension. JACC Basic Transl Sci. 2022 Apr; 7(4):404-405. View Pleiotropic Effects of Pyruvate Kinase M2 in Right Ventricular Failure and Pulmonary Arterial Hypertension. Abstract
Mechanisms of pulmonary vascular dysfunction in pulmonary hypertension and implications for novel therapies. Am J Physiol Heart Circ Physiol. 2022 05 01; 322(5):H702-H724. View Mechanisms of pulmonary vascular dysfunction in pulmonary hypertension and implications for novel therapies. Abstract
ETV2 regulates PARP-1 binding protein to induce ER stress-mediated death in tuberin-deficient cells. Life Sci Alliance. 2022 05; 5(5). View ETV2 regulates PARP-1 binding protein to induce ER stress-mediated death in tuberin-deficient cells. Abstract
Metabolomic and transcriptomic signatures of chemogenetic heart failure. Am J Physiol Heart Circ Physiol. 2022 03 01; 322(3):H451-H465. View Metabolomic and transcriptomic signatures of chemogenetic heart failure. Abstract
Proceedings of the 13th International Newborn Brain Conference: Neonatal Neurocritical Care, Seizures, and Continuous EEG monitoring. J Neonatal Perinatal Med. 2022; 15(2):467-485. View Proceedings of the 13th International Newborn Brain Conference: Neonatal Neurocritical Care, Seizures, and Continuous EEG monitoring. Abstract
Acetazolamide Improves Right Ventricular Function and Metabolic Gene Dysregulation in Experimental Pulmonary Arterial Hypertension. Front Cardiovasc Med. 2021; 8:662870. View Acetazolamide Improves Right Ventricular Function and Metabolic Gene Dysregulation in Experimental Pulmonary Arterial Hypertension. Abstract
Off-label use of PAH-targeted medications approved for adults and their financial coverage by health insurances are vital for children with pulmonary hypertension. Eur J Clin Invest. 2021 Aug; 51(8):e13571. View Off-label use of PAH-targeted medications approved for adults and their financial coverage by health insurances are vital for children with pulmonary hypertension. Abstract
Carbonic anhydrase inhibition improves pulmonary artery reactivity and nitric oxide-mediated relaxation in sugen-hypoxia model of pulmonary hypertension. Am J Physiol Regul Integr Comp Physiol. 2021 06 01; 320(6):R835-R850. View Carbonic anhydrase inhibition improves pulmonary artery reactivity and nitric oxide-mediated relaxation in sugen-hypoxia model of pulmonary hypertension. Abstract
Adipokines and Metabolic Regulators in Human and Experimental Pulmonary Arterial Hypertension. Int J Mol Sci. 2021 Feb 01; 22(3). View Adipokines and Metabolic Regulators in Human and Experimental Pulmonary Arterial Hypertension. Abstract
Lower oxygen saturation targets in preterm infants are not associated with increased rates of pulmonary hypertension. J Neonatal Perinatal Med. 2021; 14(4):519-526. View Lower oxygen saturation targets in preterm infants are not associated with increased rates of pulmonary hypertension. Abstract
Echocardiographic markers of pulmonary hemodynamics and right ventricular hypertrophy in rat models of pulmonary hypertension. Pulm Circ. 2020 Apr-Jun; 10(2):2045894020910976. View Echocardiographic markers of pulmonary hemodynamics and right ventricular hypertrophy in rat models of pulmonary hypertension. Abstract
Association of circulating FGF-21 levels in the first week of life and postnatal growth in hospitalized preterm infants. Metabol Open. 2020 Mar; 5:100030. View Association of circulating FGF-21 levels in the first week of life and postnatal growth in hospitalized preterm infants. Abstract
Control of human hemoglobin switching by LIN28B-mediated regulation of BCL11A translation. Nat Genet. 2020 02; 52(2):138-145. View Control of human hemoglobin switching by LIN28B-mediated regulation of BCL11A translation. Abstract
GLYCOSYLATED FIBRONECTIN AND INHIBIN ARE LOWER AND ANTI-MÜLLERIAN HORMONE IS HIGHER IN UMBILICAL CORD BLOOD WHEN MOTHERS HAVE PREECLAMPSIA. Endocr Pract. 2020 Mar; 26(3):318-327. View GLYCOSYLATED FIBRONECTIN AND INHIBIN ARE LOWER AND ANTI-MÜLLERIAN HORMONE IS HIGHER IN UMBILICAL CORD BLOOD WHEN MOTHERS HAVE PREECLAMPSIA. Abstract
Carbonic Anhydrase Inhibition Ameliorates Inflammation and Experimental Pulmonary Hypertension. Am J Respir Cell Mol Biol. 2019 10; 61(4):512-524. View Carbonic Anhydrase Inhibition Ameliorates Inflammation and Experimental Pulmonary Hypertension. Abstract
Placental proteases PAPP-A and PAPP-A2, the binding proteins they cleave (IGFBP-4 and -5), and IGF-I and IGF-II: Levels in umbilical cord blood and associations with birth weight and length. Metabolism. 2019 11; 100:153959. View Placental proteases PAPP-A and PAPP-A2, the binding proteins they cleave (IGFBP-4 and -5), and IGF-I and IGF-II: Levels in umbilical cord blood and associations with birth weight and length. Abstract
Early caloric deprivation in preterm infants affects Bayley-III scales performance at 18-24 months of corrected age. Res Dev Disabil. 2019 Aug; 91:103429. View Early caloric deprivation in preterm infants affects Bayley-III scales performance at 18-24 months of corrected age. Abstract
Bronchopulmonary Dysplasia: An Update of Current Pharmacologic Therapies and New Approaches. Clin Med Insights Pediatr. 2018; 12:1179556518817322. View Bronchopulmonary Dysplasia: An Update of Current Pharmacologic Therapies and New Approaches. Abstract
Macrophage FABP4 is required for neutrophil recruitment and bacterial clearance in Pseudomonas aeruginosa pneumonia. FASEB J. 2019 03; 33(3):3562-3574. View Macrophage FABP4 is required for neutrophil recruitment and bacterial clearance in Pseudomonas aeruginosa pneumonia. Abstract
Adjuvant Effect of Bacille Calmette-Guérin on Hepatitis B Vaccine Immunogenicity in the Preterm and Term Newborn. Front Immunol. 2018; 9:29. View Adjuvant Effect of Bacille Calmette-Guérin on Hepatitis B Vaccine Immunogenicity in the Preterm and Term Newborn. Abstract
Is There More to Zika? Complex Cardiac Disease in a Case of Congenital Zika Syndrome. Neonatology. 2018; 113(2):177-182. View Is There More to Zika? Complex Cardiac Disease in a Case of Congenital Zika Syndrome. Abstract
Impaired Pulmonary Arterial Vasoconstriction and Nitric Oxide-Mediated Relaxation Underlie Severe Pulmonary Hypertension in the Sugen-Hypoxia Rat Model. J Pharmacol Exp Ther. 2018 02; 364(2):258-274. View Impaired Pulmonary Arterial Vasoconstriction and Nitric Oxide-Mediated Relaxation Underlie Severe Pulmonary Hypertension in the Sugen-Hypoxia Rat Model. Abstract
Cord Blood Adipocyte Fatty Acid-Binding Protein Levels Correlate With Gestational Age and Birth Weight in Neonates. J Clin Endocrinol Metab. 2017 05 01; 102(5):1606-1613. View Cord Blood Adipocyte Fatty Acid-Binding Protein Levels Correlate With Gestational Age and Birth Weight in Neonates. Abstract
Establishing Effective Mentoring Networks: Rationale and Strategies. MedEdPORTAL. 2017 Apr 18; 13:10571. View Establishing Effective Mentoring Networks: Rationale and Strategies. Abstract
Vitamin D and bronchopulmonary dysplasia in preterm infants. J Perinatol. 2016 10; 36(10):878-82. View Vitamin D and bronchopulmonary dysplasia in preterm infants. Abstract
Sustaining careers of physician-scientists in neonatology and pediatric critical care medicine: formulating supportive departmental policies. Pediatr Res. 2016 11; 80(5):635-640. View Sustaining careers of physician-scientists in neonatology and pediatric critical care medicine: formulating supportive departmental policies. Abstract
Cord blood irisin levels are positively correlated with birth weight in newborn infants. Metabolism. 2015 Nov; 64(11):1507-14. View Cord blood irisin levels are positively correlated with birth weight in newborn infants. Abstract
Hemopexin in severe inflammation and infection: mouse models and human diseases. Crit Care. 2015 Apr 15; 19:166. View Hemopexin in severe inflammation and infection: mouse models and human diseases. Abstract
Elk-3 is a KLF4-regulated gene that modulates the phagocytosis of bacteria by macrophages. J Leukoc Biol. 2015 Jan; 97(1):171-80. View Elk-3 is a KLF4-regulated gene that modulates the phagocytosis of bacteria by macrophages. Abstract
Cord blood levels of osteopontin as a phenotype marker of gestational age and neonatal morbidities. Obesity (Silver Spring). 2014 May; 22(5):1317-24. View Cord blood levels of osteopontin as a phenotype marker of gestational age and neonatal morbidities. Abstract
Vitamin D status among preterm and full-term infants at birth. Pediatr Res. 2014 Jan; 75(1-1):75-80. View Vitamin D status among preterm and full-term infants at birth. Abstract
Endothelial indoleamine 2,3-dioxygenase protects against development of pulmonary hypertension. Am J Respir Crit Care Med. 2013 Aug 15; 188(4):482-91. View Endothelial indoleamine 2,3-dioxygenase protects against development of pulmonary hypertension. Abstract
An update on pharmacologic approaches to bronchopulmonary dysplasia. Semin Perinatol. 2013 Apr; 37(2):115-23. View An update on pharmacologic approaches to bronchopulmonary dysplasia. Abstract
Improved pulmonary vascular reactivity and decreased hypertrophic remodeling during nonhypercapnic acidosis in experimental pulmonary hypertension. Am J Physiol Lung Cell Mol Physiol. 2012 May 01; 302(9):L875-90. View Improved pulmonary vascular reactivity and decreased hypertrophic remodeling during nonhypercapnic acidosis in experimental pulmonary hypertension. Abstract
Current pharmacologic approaches for prevention and treatment of bronchopulmonary dysplasia. Int J Pediatr. 2012; 2012:598606. View Current pharmacologic approaches for prevention and treatment of bronchopulmonary dysplasia. Abstract
Heme oxygenase-1 does not mediate the effects of extracellular acidosis on vascular smooth muscle cell proliferation, migration, and susceptibility to apoptosis. J Vasc Res. 2011; 48(4):285-96. View Heme oxygenase-1 does not mediate the effects of extracellular acidosis on vascular smooth muscle cell proliferation, migration, and susceptibility to apoptosis. Abstract
Sex hormones and vascular protection in pulmonary arterial hypertension. J Cardiovasc Pharmacol. 2010 Nov; 56(5):471-4. View Sex hormones and vascular protection in pulmonary arterial hypertension. Abstract
Impaired vasoconstriction and nitric oxide-mediated relaxation in pulmonary arteries of hypoxia- and monocrotaline-induced pulmonary hypertensive rats. J Pharmacol Exp Ther. 2010 Feb; 332(2):455-62. View Impaired vasoconstriction and nitric oxide-mediated relaxation in pulmonary arteries of hypoxia- and monocrotaline-induced pulmonary hypertensive rats. Abstract
Divergent cardiopulmonary actions of heme oxygenase enzymatic products in chronic hypoxia. PLoS One. 2009 Jun 19; 4(6):e5978. View Divergent cardiopulmonary actions of heme oxygenase enzymatic products in chronic hypoxia. Abstract
Intrauterine closure of the ductus arteriosus: implications for the neonatologist. Am J Perinatol. 2009 Aug; 26(7):473-8. View Intrauterine closure of the ductus arteriosus: implications for the neonatologist. Abstract
The p38 mitogen-activated protein kinase pathway is involved in the regulation of heme oxygenase-1 by acidic extracellular pH in aortic smooth muscle cells. J Cell Biochem. 2008 Dec 01; 105(5):1298-306. View The p38 mitogen-activated protein kinase pathway is involved in the regulation of heme oxygenase-1 by acidic extracellular pH in aortic smooth muscle cells. Abstract
Gender differences in research grant applications and funding outcomes for medical school faculty. J Womens Health (Larchmt). 2008 Mar; 17(2):207-14. View Gender differences in research grant applications and funding outcomes for medical school faculty. Abstract
Pharmacological strategies in the prevention and management of bronchopulmonary dysplasia. Semin Perinatol. 2006 Aug; 30(4):209-18. View Pharmacological strategies in the prevention and management of bronchopulmonary dysplasia. Abstract
Cerebral endothelial nitric oxide synthase expression is reduced after very-low-flow bypass. Ann Thorac Surg. 2006 Jun; 81(6):2202-6. View Cerebral endothelial nitric oxide synthase expression is reduced after very-low-flow bypass. Abstract
Mechanisms of heme oxygenase-1-mediated cardiac and pulmonary vascular protection in chronic hypoxia: roles of carbon monoxide and bilirubin. Chest. 2005 Dec; 128(6 Suppl):578S-579S. View Mechanisms of heme oxygenase-1-mediated cardiac and pulmonary vascular protection in chronic hypoxia: roles of carbon monoxide and bilirubin. Abstract
Lung injury and bronchopulmonary dysplasia in newborn infants. J Intensive Care Med. 2005 Mar-Apr; 20(2):76-87. View Lung injury and bronchopulmonary dysplasia in newborn infants. Abstract
Extracellular acidosis induces heme oxygenase-1 expression in vascular smooth muscle cells. Am J Physiol Heart Circ Physiol. 2005 Jun; 288(6):H2647-52. View Extracellular acidosis induces heme oxygenase-1 expression in vascular smooth muscle cells. Abstract
Current concepts in intrauterine growth restriction. J Intensive Care Med. 2004 Nov-Dec; 19(6):307-19. View Current concepts in intrauterine growth restriction. Abstract
Primary ciliary dyskinesia as a cause of neonatal respiratory distress: implications for the neonatologist. J Perinatol. 2003 Dec; 23(8):684-7. View Primary ciliary dyskinesia as a cause of neonatal respiratory distress: implications for the neonatologist. Abstract
Leptin in relation to growth and developmental processes in the fetus. Semin Reprod Med. 2002 May; 20(2):123-30. View Leptin in relation to growth and developmental processes in the fetus. Abstract
Targeted expression of heme oxygenase-1 prevents the pulmonary inflammatory and vascular responses to hypoxia. Proc Natl Acad Sci U S A. 2001 Jul 17; 98(15):8798-803. View Targeted expression of heme oxygenase-1 prevents the pulmonary inflammatory and vascular responses to hypoxia. Abstract
Cord blood leptin and insulin-like growth factor levels are independent predictors of fetal growth. J Clin Endocrinol Metab. 2001 Feb; 86(2):935-8. View Cord blood leptin and insulin-like growth factor levels are independent predictors of fetal growth. Abstract
Inhaled nitric oxide reduces the need for extracorporeal membrane oxygenation in infants with persistent pulmonary hypertension of the newborn. Crit Care Med. 2000 Nov; 28(11):3722-7. View Inhaled nitric oxide reduces the need for extracorporeal membrane oxygenation in infants with persistent pulmonary hypertension of the newborn. Abstract
Prevention of hypoxia-induced pulmonary hypertension by enhancement of endogenous heme oxygenase-1 in the rat. Circ Res. 2000 Jun 23; 86(12):1224-9. View Prevention of hypoxia-induced pulmonary hypertension by enhancement of endogenous heme oxygenase-1 in the rat. Abstract
Hypoxia induces severe right ventricular dilatation and infarction in heme oxygenase-1 null mice. J Clin Invest. 1999 Apr; 103(8):R23-9. View Hypoxia induces severe right ventricular dilatation and infarction in heme oxygenase-1 null mice. Abstract
Inhaled nitric oxide does not affect adenosine 5'-diphosphate-dependent platelet activation in infants with persistent pulmonary hypertension of the newborn. Pediatrics. 1998 Dec; 102(6):1390-3. View Inhaled nitric oxide does not affect adenosine 5'-diphosphate-dependent platelet activation in infants with persistent pulmonary hypertension of the newborn. Abstract
Hypoxic responses of vascular cells. Chest. 1998 Jul; 114(1 Suppl):25S-28S. View Hypoxic responses of vascular cells. Abstract
Carbon monoxide and nitric oxide suppress the hypoxic induction of vascular endothelial growth factor gene via the 5' enhancer. J Biol Chem. 1998 Jun 12; 273(24):15257-62. View Carbon monoxide and nitric oxide suppress the hypoxic induction of vascular endothelial growth factor gene via the 5' enhancer. Abstract
Increased vascular endothelial growth factor production in the lungs of rats with hypoxia-induced pulmonary hypertension. Am J Respir Cell Mol Biol. 1998 Jun; 18(6):768-76. View Increased vascular endothelial growth factor production in the lungs of rats with hypoxia-induced pulmonary hypertension. Abstract
Effect of inhaled nitric oxide on endothelin-1 and cyclic guanosine 5'-monophosphate plasma concentrations in newborn infants with persistent pulmonary hypertension. J Pediatr. 1997 Apr; 130(4):603-11. View Effect of inhaled nitric oxide on endothelin-1 and cyclic guanosine 5'-monophosphate plasma concentrations in newborn infants with persistent pulmonary hypertension. Abstract
Mechanisms by which oxygen regulates gene expression and cell-cell interaction in the vasculature. Kidney Int. 1997 Feb; 51(2):438-43. View Mechanisms by which oxygen regulates gene expression and cell-cell interaction in the vasculature. Abstract