BACKGROUND The recent availability of egg white protein highly enriched with (13)C has allowed breath test technology to be adapted for the study of protein digestion and absorption. Pancreatic trypsin is considered to be the key enzyme in the proteolytic cascade. AIM To evaluate trypsin activity in the small intestine of healthy volunteers and patients with pancreatic disease by a recently d...

OBJECTIVES a) To determine the rate of H. pylori reinfection after successful eradication in a 4-year follow-up study; and b) To evaluate the contribution of different factors in the infection relapse. PATIENTS AND METHODS A total of 208 patients (age range 18-81 years; average 50 years; 87 women) who had been successfully treated for H. pylori infection were included. Annually, urea breath t...

Background—The recent availability of egg white protein highly enriched with C has allowed breath test technology to be adapted for the study of protein digestion and absorption. Pancreatic trypsin is considered to be the key enzyme in the proteolytic cascade. Aim—To evaluate trypsin activity in the small intestine of healthy volunteers and patients with pancreatic disease by a recently develop...

Breath alcohol concentration, breath temperature, and body temperature are used to extrapolate the breath alcohol concentration to the concentration of alcohol in the deep lung air, which is in equilibrium with the pulmonary blood. Introduction The variability that is seen in the breath alcohol test (note: “alcohol” means ethyl alcohol) has always been more or less ignored as inevitable “biolog...

A 14C-urea breath test analogous to its clinical counterpart is described for use in ferrets naturally or experimentally infected with Helicobacter mustelae. The test is performed within a sealed glass metabolism chamber through which air is drawn at a constant rate and expired breath collected into sodium hydroxide. Peak 14CO2 production occurred approximately 1 hour after substrate administra...