Abstract-Ulcers are believed to result from an imbalance between the aggressive (acid, pepsin) and defensive forces (bicarbonate, mucous) in the stomach and duodenum. This imbalance can be restored by reducing the secretion of acid from gastric pariet...
Abstract-Ulcers are believed to result from an imbalance between the aggressive (acid, pepsin) and defensive forces (bicarbonate, mucous) in the stomach and duodenum. This imbalance can be restored by reducing the secretion of acid from gastric parietal cells. These mechanisms include inhibition of acid secretion by histamine H_2-receptor antagonists, H^+/K^+-ATPase (proton pump) inhibitors, anticholinergics, gastrin antagonists and prostaglandins. However, anticholinergics and prostaglandins were not selective in the action and side effects limited their clinical application. Therefore, most effective therapies are generally histamine H_2-antagonists and H^+/K^+-ATPase inhibitors. Here, these two groups are medicinal chemically reviewed.