creators_name: Oades, R.D. creators_name: Daniels, R. creators_name: Rascher, W. type: journalp datestamp: 2001-03-30 lastmod: 2011-03-11 08:54:36 metadata_visibility: show title: Plasma neuropeptide-Y levels, monoamine metabolism, electrolyte excretion and drinking behavior in children with attention-deficit hyperactivity disorder ispublished: pub subjects: neuro-chem subjects: neuro-psych subjects: physio-psy full_text_status: public keywords: Attention-deficit/hyperactivity disorder, ADHD, child, development, peptide, NPY, monoamine, noradrenaline, NA, dopamine, DA, thirst, drinking, electrolyte, ions, calcium, phosphate, sodium, potassium, urine, plasma, methylphenidate, adrenaline, metabolism, attention, hypertension, autonomic abstract: Introduction: This study was conducted against a background of the following four points: a) increased drinking behavior in children with attention-deficit hyperactivity disorder (ADHD), b) the parallel between some behaviours associated with ADHD and with hypertension, c) the use of the spontaneously hypertensive rat as a model for ADHD, and d) similarities in the changes of neuropeptide-Y (NPY) and catecholamine in the studies of hypertension and drinking, Methods: Measures of NPY, catecholamines and electrolyte balance were compared in the plasma and urine of healthy children and those with ADHD. Drinking was monitored during three hours of neuropsychological tests over two days in 14 ADHD (mean 9.8 years-of-age) and 9 healthy children (10.6 years-of-age). Results: Patients drank 4 times more water and showed twice the levels of NPY in controls. In controls there were positive and in patients there were negative relationships for NPY with drinking and restless behavior. Patients' plasma levels of norepinephrine (NE) and epinephrine were slightly elevated, but urinary levels of NE and the serotonin metabolite were markedly increased. Urinary excretion rates for sodium (not potassium), phosphate and, especially calcium were decreased in patients. NPY levels were inversely related to calcium excretion and drinking inversely to sodium circulating (but positively with potassium and phosphate excretion). 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(1998) Plasma neuropeptide-Y levels, monoamine metabolism, electrolyte excretion and drinking behavior in children with attention-deficit hyperactivity disorder. [Journal (Paginated)] document_url: http://cogprints.org/1418/2/adhd-npy-98.pdf