This study examines the neuronal response to neuromodulators that interact with the adenylate cyclase system of the cell. Neuroblastoma cells in culture have been shown to respond to Alpha-adrenergic and muscarinic agents by a decreased synthesis of cyclic AMP. The mechanism of the adenylate cyclase inhibiton in this and other cell types has not been fully elucidated. In other systems, muscarinic and Alpha-adrenergic hormones alter cell membrane phospholipids in such a way as to promote Ca++ mobilization and arachidonic acid release as intermediary functions mediating the tissue specific response. Recent findings in my laboratory are consistent with a mechanism of phospholipid metabolism as a concurrent response to the inhibition of adenylate cyclase in neuroblastoma cells. It is the purpose of the proposed studies to examine the relationship between adenylate cyclase inhibition and the membrane phospholipid events leading to arachidonic acid release and metabolism in neuroblastoma cells. It is expected that these experiments will advance our understanding of neurotransmitter and hormone actions in the nervous system.

Agency
National Institute of Health (NIH)
Institute
National Institute of Neurological Disorders and Stroke (NINDS)
Type
Modified Research Career Development Award (K04)
Project #
5K04NS000868-02
Application #
3074743
Study Section
Neurological Sciences Subcommittee 1 (NLS)
Project Start
1984-03-01
Project End
1989-02-28
Budget Start
1985-03-01
Budget End
1986-02-28
Support Year
2
Fiscal Year
1985
Total Cost
Indirect Cost
Name
Saint Louis University
Department
Type
Schools of Medicine
DUNS #
City
Saint Louis
State
MO
Country
United States
Zip Code
63103
Bidaut-Russell, M; Howlett, A C (1991) Cannabinoid receptor-regulated cyclic AMP accumulation in the rat striatum. J Neurochem 57:1769-73
O'Donnell, K A; Howlett, A C (1991) Inhibition of adenylate cyclase by p-bromophenacyl bromide. Biochem Pharmacol 42:1941-6
O'Donnell, K A; Howlett, A C (1991) Muscarinic receptor binding is inhibited by quinacrine. Neurosci Lett 127:46-8
Howlett, A C; Champion, T M; Wilken, G H et al. (1990) Stereochemical effects of 11-OH-delta 8-tetrahydrocannabinol-dimethylheptyl to inhibit adenylate cyclase and bind to the cannabinoid receptor. Neuropharmacology 29:161-5
Bidaut-Russell, M; Devane, W A; Howlett, A C (1990) Cannabinoid receptors and modulation of cyclic AMP accumulation in the rat brain. J Neurochem 55:21-6
Coezy, E D; Corvol, P; Howlett, A C (1990) Involvement of a pertussis toxin-sensitive G protein in the regulation of angiotensinogen production by an angiotensin II analog in HepG2 cells. Cell Signal 2:67-76
Howlett, A C; Scott, D K; Wilken, G H (1989) Regulation of adenylate cyclase by cannabinoid drugs. Insights based on thermodynamic studies. Biochem Pharmacol 38:3297-304
Beinfeld, M C; Brick, P L; Howlett, A C et al. (1988) The regulation of vasoactive intestinal peptide synthesis in neuroblastoma and chromaffin cells. Ann N Y Acad Sci 527:68-76
Howlett, A C; Johnson, M R; Melvin, L S et al. (1988) Nonclassical cannabinoid analgetics inhibit adenylate cyclase: development of a cannabinoid receptor model. Mol Pharmacol 33:297-302
Devane, W A; Dysarz 3rd, F A; Johnson, M R et al. (1988) Determination and characterization of a cannabinoid receptor in rat brain. Mol Pharmacol 34:605-13

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