奥沙西泮 (Oxpam)

概览

Oxazepam is an intermediate-acting benzodiazepine with slow onset commonly used to treat panic disorders, severe anxiety, alcohol withdrawals, and insomnia.

作用机制

Like other benzodiazepines, oxazepam exerts its anxiolytic effects by potentiating the effect of gamma-aminobutyric acid (GABA) on GABA(A) receptors, the main inhibitory neurotransmitter receptors in the mammalian brain. GABA(A) receptors are a component of GABA-gated ionotropic chloride channels that produce inhibitory postsynaptic potentials - following activation by GABA, the channel undergoes a conformational change that allows the passage of chloride ions through the channel. The inhibitory potentials produced by GABA neurotransmission play an integral role in the suppression and control of epileptiform nerve firing such as that seen in epilepsy, which makes the GABA system a desirable target in the treatment of epilepsy. Benzodiazepines are positive allosteric modulators of GABA(A) function. They bind to the interface between alpha (α) and gamma (γ) subunits on the receptor, commonly referred to as the benzodiazepine binding site, and modulate the receptor such that its inhibitory response to GABA binding is dramatically increased.

适应症

Oxazepam is indicated for the management of anxiety disorders and for the short-term relief of symptoms of anxiety. It may also be used in the management of alcohol withdrawal symptoms.

• Alcohol Withdrawal Syndrome
• Anxiety
• Anxiety Disorders