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According to our matching algorithm, Steven Zhuangzhi Chao is the likely recipient of the following grants.
| Years |
Recipients |
Code |
Title / Keywords |
Matching
score |
| 2000 — 2003 |
Chao, Steven Z |
F30Activity Code Description:
Individual fellowships for predoctoral training which leads to the combined M.D./Ph.D. degrees. |
Dopamine and Glutamate Receptor Interactions @ Rosalind Franklin Univ of Medicine &Sci
DESCRIPTION Over the past decade there has been an explosion of knowledge in our understanding of the neurobiological basis of drug addiction, yet this country continues to be plagued by drug related crimes and problems. More research is needed to further characterize the cellular adaptations that take place in response to chronic drug exposure in order to develop pharmacological or better yet behavioral strategies to combat drug addiction. Our hypothesis is that drug addiction is a form of maladaptive synaptic plasticity that uses cellular mechanisms similar to other forms of plasticity like LTP. This research proposal will provide essential information about medium spiny neurons in the nucleus accumbens (NAc), a brain region that converts motivation into behavior and is critically involved in drug abuse, and thereby further our understanding of this maladaptive change at a molecular level. Because previous studies have shown that alterations in glutamate receptor function in NAc are important adaptations triggered by chronic cocaine or amphetamine exposure, we propose to investigate the regulation of glutamate receptor phosphorylation and trafficking regulation of the AMPA receptor subunit GluR1 in LTP and LTD. Aim 1 will characterize expression of D1 and D2 DA receptors and GluR1 in the cultures. Our preliminary results have shown expression of all three receptors, a mature pattern of GluR1 surface expression and evidence of GluR1 down-regulation in response to high glutamate levels. Aim 2 will examine the regulation of GluR1 phosphorylation by DA receptor stimulation. In preliminary studies, D1 receptor stimulation increased GluR1 phosphorylation. Aim 3 will study how DA receptor stimulation affects GluR1 trafficking. Our results may suggest mechanistic links between neuroplasticity in drug addiction and learning.
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0.917 |