A low excretion of xylose may be due to malabsorption, renal disease, or old age. Malabsorption can be distinguished from other causes by performing a combined oral and intravenous test, the result being expressed as a fraction of these readings. Sex and body weight do not influence the xylose test.

Pteroylglutamic acid (PGA) absorption days. A statistically significant difference was assessed in ten untreated tropical in PGA absorption between TS and consprue (TS) and eight control subjects trol subjects was obtained only when gluutilizing a marker perfusion technique. cose was present in the perfusate. Thus, Physiologic concentrations of the vitamin unequivocal malabsorption of PGA is (2...

BACKGROUND Lactase is an enzyme involved in the hydrolysis of lactose. Deficiency of the enzyme (hypolactasia) may be determined genetically or arise secondarily to disease of small intestine. Under this condition, lactose enters the colon where it is fermented by intestinal microflora and turns to gases and short-chain fatty acids, causing gastrointestinal symptoms known as lactose intolerance...

CONTEXT Fructose is a monosaccharide frequently present in natural and artificial juice fruits. When the concentration of fructose in certain food is present in excess of glucose concentration some individuals may develop fructose malabsorption. OBJECTIVES To report the frequency of fructose malabsorption utilizing the hydrogen breath test in children with gastrointestinal and/or nutritional ...

AIM Tropical sprue was considered to be the most important cause of malabsorption in adults in India. However, several reports indicate that celiac disease is now recognized more frequently. METHODS We analyzed the clinical presentation, endoscopic and histological features of 94 consecutive patients (age >12 years) with chronic diarrhea and malabsorption syndrome. The spectrum of disease in ...

BACKGROUND Sugar intolerance and functional gastrointestinal disorders are both common in school age children. Both may present with similar complaints such as abdominal pain, diarrhea and bloating. Lactose, fructose and sucrose hydrogen breath tests are widely used to detect sugar malabsorption. AIM To determine the proportion of children with symptoms of functional gastrointestinal disorder...

BACKGROUND small bowel structure and function are not different between elderly people and young people. Thus, in principle it is advisable to perform diagnostic investigation of elderly patients as well as younger patients when they present with symptoms suggestive of intestinal malabsorption. A key test for the etiologic diagnosis of intestinal malabsorption, jejunal biopsy, has not been spec...

Twenty grossly obese patients underwent ileojejunal bypass operations. Measurements of calories lost in faeces showed that the malabsorption could not account for the weight loss. Furthermore, the malabsorption was not decreased two years after bypass, when weight was no longer being lost. Dietary restriction is therefore largely responsible for the weight loss and increased food intake for wei...

Involvement of the gastrointestinal tract in systemic lupus erythematosus is well documented but small intestinal malabsorption is a rare event. We report a 27 year old woman with systemic lupus erythematosus who had malabsorption and coeliac-like changes on intestinal biopsy. This is the eighth reported case of this association the significance of which is discussed.

Misoprostol, a synthetic prostaglandin that is known to reduce gastric acid production and stimulate duodenal bicarbonate production, was evaluated in 22 patients with cystic fibrosis. In those patients who had greater than 10% fat malabsorption while taking pancrease the addition of misoprostol significantly reduced the degree of fat malabsorption.