Summary
In the first hour after parturition, the newborn rabbit brain norepinephrine content is about 37% less than that of the fetus of 30th or 31st day. Later on, within 2 to 4 h, the norepinephrine level returns to the prenatal value and remains unchanged between 8 to 12 h. This transitory fall of the brain norepinephrine seems to be linked to the stress conditions which occur during parturition.
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This work was supported by a grant from DGRST (Délégation Générale à la Recherche Scientifigue et Technique, contrat No. 71 73219).
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Motelica-Heino, I., Roffi, J. Norepinephrine in fetal and neonatal rabbit brain. Experientia 31, 1166–1167 (1975). https://doi.org/10.1007/BF02326772
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DOI: https://doi.org/10.1007/BF02326772