How do NSAIDs worsen peptic ulcer disease (PUD)?

How do NSAIDs worsen peptic ulcer disease (PUD)?

• A. By increasing acid production
• B. By inhibiting prostaglandin synthesis
• C. By decreasing mucosal defense
• D. By interfering with gastrokinetics

Answer: (B)

Nonsteroidal anti-inflammatory drugs (NSAIDs) are known to exacerbate peptic ulcer disease (PUD) primarily due to their role in inhibiting prostaglandin synthesis. Prostaglandins are vital for maintaining the protective lining of the gastric mucosa. They help enhance the production of mucus and bicarbonate, which serve to neutralize gastric acid and protect the stomach lining. Additionally, prostaglandins promote the maintenance of mucosal blood flow, which is necessary for tissue repair and protection. When NSAIDs inhibit the action of cyclooxygenase (COX) enzymes—specifically COX-1, which is responsible for producing protective prostaglandins—the balance between aggressive factors (like gastric acid) and protective factors (like mucus and bicarbonate) is disrupted. This disruption can lead to increased susceptibility to ulceration as the mucosal defenses become compromised, ultimately resulting in gastric irritation, erosion, and the potential development of ulcers. Contextually, while it may seem that increased acid production, decreased mucosal defense, or interference with gastrokinetics could contribute to PUD, the primary and direct mechanism by which NSAIDs exacerbate this condition is through their inhibition of prostaglandin synthesis. This inhibition leads to

Nonsteroidal anti-inflammatory drugs (NSAIDs) are known to exacerbate peptic ulcer disease (PUD) primarily due to their role in inhibiting prostaglandin synthesis. Prostaglandins are vital for maintaining the protective lining of the gastric mucosa. They help enhance the production of mucus and bicarbonate, which serve to neutralize gastric acid and protect the stomach lining. Additionally, prostaglandins promote the maintenance of mucosal blood flow, which is necessary for tissue repair and protection.

When NSAIDs inhibit the action of cyclooxygenase (COX) enzymes—specifically COX-1, which is responsible for producing protective prostaglandins—the balance between aggressive factors (like gastric acid) and protective factors (like mucus and bicarbonate) is disrupted. This disruption can lead to increased susceptibility to ulceration as the mucosal defenses become compromised, ultimately resulting in gastric irritation, erosion, and the potential development of ulcers.

Contextually, while it may seem that increased acid production, decreased mucosal defense, or interference with gastrokinetics could contribute to PUD, the primary and direct mechanism by which NSAIDs exacerbate this condition is through their inhibition of prostaglandin synthesis. This inhibition leads to