A Valenzuela-Ruiz

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OBJECTIVE To analyze the kynurenine and methoxyindole metabolic pathways of tryptophan in order to identify changes in premature neonates and in neonates suffering from fetal distress. METHODS One hundred and twelve neonates were assigned to three groups: normal neonates (control group), preterm neonates (neonates born before the 37th gestational week)(More)
The pineal gland in humans is under both alpha- and beta-adrenergic control, although it seems that beta1-adrenoceptors are mainly implicated in melatonin secretion. In the present study, we evaluated the role of beta-adrenergic innervation on melatonin production and its relation with the production of growth hormone (GH). Thirty-four children (15 males(More)
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