lactase

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Related to lactase deficiency: lactose intolerance, Lactase enzyme

lactase

[′lak‚tās]
(biochemistry)
An enzyme that catalyzes the hydrolysis of lactose to dextrose and galactose.
References in periodicals archive ?
A lactase deficiency does not allow lactose to be broken into absorbable nutrients within the intestinal tract.
Markers of intestinal inflammation, lactase deficiency, and intestinal permeability were all similar between the children with and without autism.
Genotyping lactase deficiency was chosen as the most suitable method of selective screening for hypolactasia.
Naturally acquired lactase deficiency can be treated by supplying sufficient neutral lactase to the small intestine, the site of its normal action.
Excellent agreement between genetic and hydrogen breath tests for lactase deficiency and the role of extended symptom assessment.
These people may have a lactase deficiency in their small intestine, but their bacteria can break the lactose down, so they don't have symptoms.
Rather than being an allergy, sulfite sensitivity is a metabolic problem, in the same way that some people can't digest milk products because they have a lactase deficiency.
The most common form of lactose intolerance in infants is caused by secondary lactase deficiency, often following gastrointestinal infection precipitating damage to the villi where lactase is produced.
Secondary lactase deficiency is temporary and could be a result of prolonged intake of antibiotics, or due to intestinal infections or some injury to the small intestine.
However, patients with true lactase deficiency according to the breath test reported more severe symptoms following the challenge than did patients with normal lactase levels: Malabsorbers reported a median of 15 for symptoms on the second, in-laboratory questionnaire (range, 7-25), compared with a median score of 4 on that survey among lactose absorbers (range, 0-11).
Not all people with lactase deficiency have digestive symptoms, but those who do may have lactose intolerance.
4]) Senna Magnesium citrate Bisacodyl Milk of Magnesia Phenolphthalein Polyethylene glycol solution Chronic alcohol ingestion Magnesium-containing antacids Bacterial infections Carbohydrate malabsorption Bile acid malabsorption Lactase deficiency Neoplasm Lactulose Gastrinoma Sorbitol VIPoma Villous adenoma of rectum Inflammatory Bowel Disease Celiac disease Hyperthyroidism