Ulcer Update

May 04, 1993|By Joseph Alper | Joseph Alper,Contributing Writer/Los Angeles Times Syndicate

Two and a half years ago, Michelle had an ulcer. In fact, she'd had one about every 18 months for nearly 10 years, and she knew that increasing the dose of her anti-ulcer medication would take care of her problem.

But in late 1990, her physician at the Mayo Clinic in Rochester, Minn., decided to try a different approach. He still prescribed Zantac, the anti-ulcer drug, but he added two antibiotics and Pepto-Bismol to her therapy. Michelle was concerned about the inconvenience of taking so many pills -- up to 11 a day -- but her physician, Nicholas J. Talley, told her it would be worth it.

It was. Michelle's ulcer never came back. No more discomfort or upset stomach. No more visits to the doctor and expensive medication.

For the past 30 years, ulcers have been blamed on elevated levels of stomach acid, brought on by stress, smoking and other behavioral factors. Researchers concentrated on developing more powerful antacids to combat duodenal and peptic ulcers.

Although anti-ulcer drugs such as Tagamet and Zantac have become more effective at quelling the symptoms of ulcer disease -- and in the process have become among the best-selling drugs in the world -- they do little to prevent the recurrence of the ulcer.

According to a small group of researchers, however, the reason for this failure to cure ulcer disease is now clear: Ulcer formation has little if anything to do with increased levels of stomach acid, they say, and everything to do with a chronic infection of the stomach lining.

This revolutionary view is so simple that some find it hard to believe. Rarely has an area of medicine been so completely transformed at such a basic level.

"Get rid of the infection, and the ulcer goes away for good," said Barry J. Marshall, associate professor of medicine at the University of Virginia Medical School in Charlottesville and the leader of the renegades. The only exception appears to be in arthritis patients whose ulcers result from taking large doses of anti-inflammatory drugs such as aspirin and ibuprofen.

A decade ago, Dr. Marshall and pathologist J. Robin Warren discovered that a spiral-shaped bacterium named Helicobacter pylori (HE-li-co-bac-ter pi-LOR-i) was present in the stomachs of ulcer patients Dr. Marshall examined at the Royal Perth Hospital in Western Australia. Treating these patients with antibiotics and bismuth -- the active ingredient in Pepto-Bismol -- cured the infection and the ulcers.

Dr. Marshall published his results in the British medical journal Lancet, but his findings were widely derided. Everyone knew that too much stomach acid produced ulcers.

Nevertheless, Dr. Marshall persisted with his studies. At one point, desperate to be taken seriously, Dr. Marshall dosed himself with the bacterium and soon developed severe gastritis, the immediate precursor to ulcer disease. He then treated himself with bismuth subsalicylate, amoxicillin and metronidazole, also known as Flagyl.

The infection, and his symptoms, went away, and he never developed full-blown ulcers.

That stunt, said Walter L. Peterson, a gastroenterologist at the University of Texas Southwestern Medical School in Dallas, got the medical community's attention and focused attention on Helicobacter and its link to digestive disease.

Several groups worldwide began studying Helicobacter, and in just a few years researchers were convinced that the bacterium caused ulcers. Still, practicing physicians were skeptical.

But in May 1992 and again in February, Dr. Marshall was vindicated. Large clinical trials conducted in Houston and Austria found that only 13 percent of the patients treated with Zantac plus antibiotics suffered a second ulcer, and those patients who did relapse still had traces of the bacteria in their systems. In contrast, more than 85 percent of patients treated with Zantac alone for two weeks suffered relapses within two years. Half the ulcers flared up within three months.

The implications of these results are enormous for ulcer patients andfor a national health care bill. For ulcer sufferers, it should mean the end of a virtual lifelong dependence on one of the four anti-ulcer drugs that are all among the 10 highest-selling pharmaceuticals in the United States and Europe. A typical ulcer patient takes one anti-ulcer pill a day, which costs more than $900 a year. It is no wonder that anti-ulcer medications had sales in the United States exceeding $5.6 billion last year.

The new therapy, consisting of six weeks of anti-ulcer medication plus two weeks of Pepto-Bismol and the antibiotics Flagyl and either tetracycline or amoxicillin, costs about $150. The anti-ulcer drug heals the stomach lining, while the antibiotic kills the bacterium. And because recurring ulcer disease would become a thing of the past, expensive ulcer surgery should become rare as well, proponents say.

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