Progesterone metabolites binds via ____ to _____ receptor

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Multiple Choice

Progesterone metabolites binds via ____ to _____ receptor

Explanation:
Progesterone metabolites, such as allopregnanolone, are neurosteroids that act as positive allosteric modulators of the GABA_A receptor. They bind to a distinct site on the receptor and increase the receptor’s response to GABA, enhancing chloride influx and thus strengthening inhibitory neurotransmission. This makes neurons less excitable, which underlies sedative and anticonvulsant effects. This mechanism is not about competitive antagonism at the NMDA receptor, nor about no effect on GABA receptors, and it is not a negative allosteric modulation. The key idea is that these progesterone metabolites boost the GABA_A receptor’s function in the presence of GABA.

Progesterone metabolites, such as allopregnanolone, are neurosteroids that act as positive allosteric modulators of the GABA_A receptor. They bind to a distinct site on the receptor and increase the receptor’s response to GABA, enhancing chloride influx and thus strengthening inhibitory neurotransmission. This makes neurons less excitable, which underlies sedative and anticonvulsant effects.

This mechanism is not about competitive antagonism at the NMDA receptor, nor about no effect on GABA receptors, and it is not a negative allosteric modulation. The key idea is that these progesterone metabolites boost the GABA_A receptor’s function in the presence of GABA.

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