Abstract:
:Acute mid-thoracic spinal cord transection eliminates hindlimb air-stepping in neonatal rats suspended in harnesses and administered L-DOPA. Because spinal cord transection eliminates all descending inputs to the hindlimb locomotor circuits, this experiment determined if coadministration of L-DOPA and quipazine (serotonin receptor agonist) would induce hindlimb air-stepping in rat pups 24 hr after transection. Hindlimb steps of spinally transected pups that received L-DOPA or quipazine alone were infrequent and slow; hindlimb steps induced by L-DOPA + quipazine occurred more frequently and were faster than those elicited by either drug alone. These findings suggest that catecholaminergic and serotonergic systems both contribute to hindlimb stepping.
journal_name
Behav Neuroscijournal_title
Behavioral neuroscienceauthors
McEwen ML,Van Hartesveldt C,Stehouwer DJdoi
10.1037//0735-7044.111.4.825subject
Has Abstractpub_date
1997-08-01 00:00:00pages
825-33issue
4eissn
0735-7044issn
1939-0084journal_volume
111pub_type
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