Fetal hypoxemia causes abnormal myocardial development in a preterm ex utero fetal ovine model.
JCI Insight
; 3(24)2018 12 20.
Article
en En
| MEDLINE
| ID: mdl-30568044
ABSTRACT
In utero hypoxia is a major cause of neonatal morbidity and mortality and predisposes to adult cardiovascular disease. No therapies exist to correct fetal hypoxia. In a new ex utero fetal support system, we tested the hypothesis that hypoxemic support of the fetus impairs myocardial development, whereas normoxic support allows normal myocardial development. Preterm fetal lambs were connected via umbilical vessels to a low-resistance oxygenator and placed in a sterile-fluid environment. Control normoxic fetuses received normal fetal oxygenation, and hypoxemic fetuses received subphysiologic oxygenation. Fetuses with normal in utero development served as normal controls. Hypoxemic fetuses exhibited decreased maximum cardiac output in both ventricles, diastolic function, myocyte and myocyte nuclear size, and increased myocardial capillary density versus control normoxic fetuses. There were no differences between control normoxic fetuses in the fetal support system and normal in utero controls. Chronic fetal hypoxemia resulted in significant abnormalities in myocyte architecture and myocardial capillary density as well as systolic and diastolic cardiac function, whereas control fetuses showed no differences. This ex utero fetal support system has potential to become a significant research tool and novel therapy to correct fetal hypoxia.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
2_ODS3
/
6_ODS3_enfermedades_notrasmisibles
/
7_ODS3_muertes_prevenibles_nacidos_ninos
Problema de salud:
2_mortalidade_materna
/
2_muertes_prevenibles
/
6_cardiovascular_diseases
/
6_congenital_chromosomal_anomalies
/
7_environmental_health
/
7_neonatal_care_health
/
7_non_communicable_diseases
Asunto principal:
Útero
/
Enfermedades Cardiovasculares
/
Feto
/
Intercambio Materno-Fetal
/
Hipoxia
/
Miocardio
Tipo de estudio:
Etiology_studies
Límite:
Animals
/
Female
/
Humans
/
Newborn
/
Pregnancy
Idioma:
En
Revista:
JCI Insight
Año:
2018
Tipo del documento:
Article
País de afiliación:
Estados Unidos