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Fetal growth‐retardation and brain‐sparing by malnutrition are associated to changes in neurotransmitters profile
Author(s) -
GarcíaContreras C.,
Valent D.,
VázquezGómez M.,
Arroyo L.,
Isabel B.,
Astiz S.,
Bassols A.,
GonzalezBulnes A.
Publication year - 2017
Publication title -
international journal of developmental neuroscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.761
H-Index - 88
eISSN - 1873-474X
pISSN - 0736-5748
DOI - 10.1016/j.ijdevneu.2017.01.005
Subject(s) - fetus , medicine , endocrinology , neurotransmitter , pregnancy , hypothalamus , norepinephrine , biology , central nervous system , dopamine , genetics
Abstract The present study assesses possible changes in the levels of different neurotransmitters (catecholamines and indoleamines) in fetuses affected by nutrient shortage. Hence, we determined the concentration of catecholamines and indoleamines at the hypothalamus of 56 swine fetuses obtained at both 70 and 90 days of pregnancy (n = 33 and 23 fetuses, respectively). The degree of fetal development and the fetal sex affected the neurotransmitters profile at both stages. At Day 70, there were found higher mean concentrations of l ‐DOPA in both female and male fetuses with severe IUGR; male fetuses with severe IUGR also showed higher concentrations of TRP than normal male littermates. At Day 90 of pregnancy, the differences between sexes were more evident. There were no significant effects from either severe IUGR on the neurotransmitter profile in male fetuses. However, in the females, a lower body‐weight was related to lower concentrations of l ‐DOPA and TRP and those female fetuses affected by severe IUGR evidenced lower HVA concentration. In conclusion, the fetal synthesis and use of neurotransmitters increase with time of pregnancy but, in case of IUGR, both catecholamines and indoleamines pathways are affected by sex‐related effects.