Abstract
The incidence of reflux disease increases with age, regardless of gender. This disease is diagnosed more often in highly developed countries. In addition to acidic reflux, the discharge of alkaline intestinal contents into the oesophagus is a major problem. This study was undertaken to examine whether hydrogels prevent irritation of the oesophageal mucosa. The aim was to investigate the influence of chitosan and hydroxypropylmethylcellulose on the properties of chitosan-containing gels. Preparations containing 4.0% hydroxypropylmethylcellulose showed the lowest pH. These gels could be used to treat advanced alkaline reflux. The addition of chitosan to all tested gels increased their pH and dynamic viscosity. The texture tests showed the effect of the hydroxypropylmethylcellulose concentration on the adhesion work of the tested gels.
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