Neurokinin B (Nk3) Receptor Neurons is an important cell type in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Neurokinin B (NK3) Receptor Neurons are neurons expressing the NK3 receptor, a member of the Tachykinin receptor family. These receptor neurons play crucial roles in dopamine modulation, thermoregulation and are implicated in various neurological and neurodegenerative conditions. [1]
| Taxonomy | ID | Name / Label |
|---|---|---|
| Cell Ontology (CL) | CL:0000197 | sensory receptor cell |
| Property | Value | [2]
|----------|-------|
| Receptor Type | NK3 (TACR3) |
| Family | Tachykinin (Neurokinin) |
| Signaling Mechanism | Gq protein-coupled, activates phospholipase C |
| Primary Location | Substantia nigra, basal ganglia, hippocampus |
| Agonists | Neurokinin B (NKB), Substance P (lower affinity) |
| Antagonists | Osanetant, Talnetant |
Neurokinin B (NK3) Receptor Neurons are neurons expressing the NK3 receptor, a member of the Tachykinin receptor family. These receptor neurons play crucial roles in dopamine modulation, thermoregulation, neuroinflammation, and are implicated in Parkinson's disease, schizophrenia, and reproductive neuroendocrinology.
The NK3 receptor signals through Gq protein-coupled mechanisms, activating phospholipase C, leading to:
| Region | NK3 Expression | Functional Role |
|---|---|---|
| Substantia nigra | High | Dopamine neuron modulation |
| Striatum | High | Motor control |
| Hippocampus | Moderate | Memory circuits |
| Hypothalamus | High | Thermoregulation, reproduction |
| Amygdala | Moderate | Emotional processing |
| Cerebral cortex | Low | Cognitive functions |
NK3 receptor neurons are implicated in several conditions:
NK3 receptor neurons interact with the neuropeptide Y (NPY) system:
| Compound | Status | Indication |
|---|---|---|
| Osanetant | Phase II | Schizophrenia |
| Talnetant | Phase II | Schizophrenia, anxiety |
| AZD-4901 | Preclinical | Neuroprotection |
| Maropitant | Veterinary | Emesis |
The study of Neurokinin B (Nk3) Receptor Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.