Abstract：
:C57/BL6 mice were administered either 7.5 mg Fe (II)/ kg or vehicle (saline) postnatally on Days 10-12 after birth. From 64 days of age onwards for 24 days, groups of mice were administered either haloperidol (0.25 or 1 or 2 mg/kg, s.c.) or vehicle (Tween-80). Twenty-four hours after the final injection of either neuroleptic compound or vehicle, spontaneous motor activity was measured over a 60-min interval. Postnatal Fe (II)-treatment (7.5 mg/kg, postnatally) reduced motor activity parameters during the initial 20-min periods (0-20 and 20-40 min) and then induced hyperactivity during the final 20-min period over all three parameters of activity, confirming previous observations. Subchronic administration of haloperidol, at the 1 and 2 mg/kg doses, and to a lesser extent the 0.25 mg/kg dose, increased the levels of activity in all three motor activity parameters in postnatal iron-treated mice: locomotion (1st and 2nd 20 min periods), rearing (1st and 2nd 20 min periods) and total activity (1st 20 min period). All three doses of haloperidol abolished the later hyperactivity in iron-treated mice, with the exception of the 0.25 mg/kg dose with regard to rearing behaviour. Apomorphine (1 mg/kg, s.c.) -induced activity was elevated by postnatal iron administration and by subchronic administration of apomorphine at the higher dose levels. In the context of these and other observations, it is suggested that subchronic administration of haloperidol interacting with postnatal iron induces different expressions of dopamine neuron comorbidity underlying movement disorder.
journal_name
Neurotox Resjournal_title
Neurotoxicity researchauthors
Fredriksson A,Archer Tdoi
10.1007/BF03033321subject
Has Abstractpub_date
2006-06-01 00:00:00pages
305-12issue
4eissn
1029-8428issn
1476-3524journal_volume
9pub_type
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