دورية
A dopaminergic deficit hypothesis of schizophrenia: the path to discovery
| العنوان: | A dopaminergic deficit hypothesis of schizophrenia: the path to discovery |
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| المؤلفون: | Carlsson, Arvid, Carlsson, Maria L. |
| المصدر: | Dialogues in Clinical Neuroscience; March 2006, Vol. 8 Issue: 1 p137-142, 6p |
| مستخلص: | In contrast to the conventional view of dopamine involvement in schizophrenia, which posits hyperactive dopaminergic transmission, we propose that for unknown developmental andfor biochemical reasons, a primary defect occurs in efficient, tight dopaminergic synaptic transmission, triggering feedback activation and receptor upregulation, and resulting in the well-characterized increase in dopaminergic tone. This hypothesis is driven by suggestive evidence for subpopulations of dopamine D2receptors delivering contrasting forms of dopaminergic transmission: synaptic receptors, responsible for basic dopaminergic function and subject to effective feedback control, and poorly controlled extrasynaptic receptors partly responsible for the positive symptoms of psychosis. Since the primary defect is dopamine deficiency, we term this theory the dopaminergic deficit hypothesis of schizophrenia, it is currently informing clinical studies with novel partial dopamine antagonists (dopamine stabilizers) such as ACR16, which preferentially target extrasynaptic receptors while leaving synaptic transmission and basic dopamine function intact. |
| قاعدة البيانات: | Supplemental Index |
Full Text Finder | تدمد: | 12948322 19585969 |
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| DOI: | 10.31887/DCNS.2006.8.1/acarlsson |