Increasing incidence of adenocarcinoma of the esophagus

A new study from researchers at UT Southwestern Medical Center and the Dallas Veterans Affairs Medical Center shows the relation between chronic acid reflux and malignant mutation - and why an accurate therapy of Gastroesophageal Reflux Disease (GERD) is of major importance.

Photo: Increasing incidence of adenocarcinoma of the esophagus

“The more reflux you have and the longer you have it, the more it might predispose you to getting Barrett’s esophagus,” said Dr. Ronda Souza, associate professor of internal medicine at UT Southwestern.

The chronic reflux of gastric components damages the esophagus. Cells divide more frequently to regenerate the structure but each time the telomeres at the end of DNA shorten. “When they become too short, the esophagus can’t regenerate the normal skin-like squamous cells anymore,” the scientists suppose, after comparing telomere length and telomerase activity in biopsy specimens taken from 54 patients. Instead intestinal-like cells are recruited to the area.
“Those cells are acid-resistant but unfortunately more prone to cancer. They could be cells circulating from the bone marrow, which can turn into intestinal tissue,” explained Dr. Spechler, professor of internal medicine. Dr. Spechler and colleagues demonstrated that bone-marrow cells play a decisive role to regenerate esophageal lining in rats that suffer heavy reflux.

“None of this is absolutely proven, but it’s an interesting concept, and it certainly supports the theory that your normal cells poop out and you get Barrett’s esophagus, which tends to turn malignant,” said Spechler. That underscores the importance of preventing recurring acid reflux.

13.08.2007

More on the subject:
Read all latest stories

Related articles

Photo

News • HAGIS project

German-Scottish teamwork against infectious diseases intensifies

Delegates from Hannover Medical School and the University of Glasgow have now signed a letter of intent to intensify their collaboration in the field of infection research.

Photo

News • Axon vulnerability to damage

Male and female brains are different – and so are the effects of concussions

Structural differences in male and female brains might explain why women are more prone to concussions and experience longer recovery from the injury than men, according to a new preclinical study.

Photo

News • Aphasia rehabilitation

Why singing helps the brain recover after a stroke

Singing rehabilitates speech production in post-stroke aphasia. Researchers at the University of Helsinki investigated the rehabilitative effect of singing on the brain.

Related products

Subscribe to Newsletter