In Alzheimer's disease, which medication class may slow progression by boosting acetylcholine?

In Alzheimer's disease, which medication class may slow progression by boosting acetylcholine?

• A. NMDA receptor antagonists
• B. Antipsychotics
• C. Corticosteroids
• D. Cholinesterase inhibitors

Answer: (D)

Boosting acetylcholine in the brain can modestly slow the cognitive decline seen in Alzheimer's disease because these patients have loss of cholinergic neurons that use acetylcholine for memory and learning. Cholinesterase inhibitors achieve this by blocking acetylcholinesterase, the enzyme that breaks down acetylcholine, thereby increasing acetylcholine levels at synapses in memory-related areas like the cortex and hippocampus. This approach aims to enhance cholinergic transmission and provide some symptomatic and functional benefit in mild to moderate disease. Common agents include donepezil, rivastigmine, and galantamine; side effects reflect increased acetylcholine activity, such as nausea, diarrhea, and bradycardia. Other drug classes, like NMDA receptor antagonists, help with different aspects of the disease by modulating glutamate but do not raise acetylcholine, and antipsychotics or corticosteroids are not used to slow disease progression.

Boosting acetylcholine in the brain can modestly slow the cognitive decline seen in Alzheimer's disease because these patients have loss of cholinergic neurons that use acetylcholine for memory and learning. Cholinesterase inhibitors achieve this by blocking acetylcholinesterase, the enzyme that breaks down acetylcholine, thereby increasing acetylcholine levels at synapses in memory-related areas like the cortex and hippocampus. This approach aims to enhance cholinergic transmission and provide some symptomatic and functional benefit in mild to moderate disease. Common agents include donepezil, rivastigmine, and galantamine; side effects reflect increased acetylcholine activity, such as nausea, diarrhea, and bradycardia. Other drug classes, like NMDA receptor antagonists, help with different aspects of the disease by modulating glutamate but do not raise acetylcholine, and antipsychotics or corticosteroids are not used to slow disease progression.