TY - JOUR
T1 - Pertussis toxin treatment modifies opiate action in the rat brain striatum
AU - Abood, M. E.
AU - Law, P. Y.
AU - Loh, H. H.
PY - 1985/3/15
Y1 - 1985/3/15
N2 - In this report we present evidence that a guanine nucleotide regulatory protien, Gi, mediates opiate action in the rat brain striatum. Opiates inhibit basal adenylate cyclase activity in rat brain striatum. This effect on adenylate cyclase is dose-dependently attenuated by pretreatment of membranes with pertussis toxin, which ADP-ribosylates a protein with a molecular mass of 41,000 daltons. This protein co-migrates with the GTP-binding subunit of Gi, which mediates inhibition of adenylate cyclase. Several brain regions were compared for the extent of radiolabeling and effects on adenylate cyclase activity. Although Gi was found in each region examined, opiate inhibition of adenylate cyclase is clearly seen only in the striatum.
AB - In this report we present evidence that a guanine nucleotide regulatory protien, Gi, mediates opiate action in the rat brain striatum. Opiates inhibit basal adenylate cyclase activity in rat brain striatum. This effect on adenylate cyclase is dose-dependently attenuated by pretreatment of membranes with pertussis toxin, which ADP-ribosylates a protein with a molecular mass of 41,000 daltons. This protein co-migrates with the GTP-binding subunit of Gi, which mediates inhibition of adenylate cyclase. Several brain regions were compared for the extent of radiolabeling and effects on adenylate cyclase activity. Although Gi was found in each region examined, opiate inhibition of adenylate cyclase is clearly seen only in the striatum.
UR - http://www.scopus.com/inward/record.url?scp=0022353179&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0022353179&partnerID=8YFLogxK
U2 - 10.1016/S0006-291X(85)80185-6
DO - 10.1016/S0006-291X(85)80185-6
M3 - Article
C2 - 3919730
AN - SCOPUS:0022353179
VL - 127
SP - 477
EP - 483
JO - Biochemical and Biophysical Research Communications
JF - Biochemical and Biophysical Research Communications
SN - 0006-291X
IS - 2
ER -