ST-148 (D2L antagonist)

Chemical compound

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ST-148 is a chemical compound that acts as a selective antagonist of the dopamine receptor D2 long isoform (D2L). It is primarily used in research settings to study the role of D2L receptors in various neurological and psychiatric conditions.

Pharmacology

ST-148 is known for its high selectivity towards the D2L receptor subtype, which is one of the two isoforms of the dopamine receptor D2. The D2L receptor is predominantly expressed in the central nervous system, particularly in areas such as the striatum, nucleus accumbens, and prefrontal cortex. These regions are associated with the regulation of motor control, reward, and cognition.

Mechanism of Action

ST-148 functions by binding to the D2L receptors and inhibiting their activity. This antagonistic action prevents the normal binding of dopamine, a neurotransmitter that plays a crucial role in the modulation of mood, motivation, and movement. By blocking D2L receptors, ST-148 can alter dopaminergic signaling pathways, which is useful in understanding the pathophysiology of disorders such as schizophrenia, Parkinson's disease, and bipolar disorder.

Research Applications

ST-148 is utilized in preclinical studies to explore the specific contributions of D2L receptors in various behavioral and physiological processes. It helps in delineating the distinct roles of D2L versus D2S (short isoform) receptors, thereby providing insights into the development of more targeted therapeutic agents.

Neurological Studies

In studies of Parkinson's disease, ST-148 is used to investigate the compensatory mechanisms that occur in response to dopaminergic neuron loss. By selectively blocking D2L receptors, researchers can assess the impact on motor function and the potential for developing new treatments that specifically target these pathways.

Psychiatric Research

ST-148 is also employed in the study of schizophrenia and other psychiatric disorders characterized by dopaminergic dysregulation. By understanding how D2L receptor antagonism affects symptoms such as hallucinations and delusions, scientists aim to improve antipsychotic drug efficacy and reduce side effects.

Chemical Properties

Chemical structure of ST-148

ST-148 is a small molecule with a molecular structure that includes a piperazine ring, which is a common feature in many psychoactive compounds. Its chemical formula is C₁₆H₂₃ClN₂, and it has a molecular weight of 278.82 g/mol.

Related Pages

• Dopamine receptor D2
• Antipsychotic
• Neurotransmitter
• Schizophrenia
• Parkinson's disease