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Gastrointestinal disorders

Janssen-Cilag has a long-standing track record in gastrointestinal and motility research. To appreciate the depth of our research experience it is necessary to understand certain principles of the digestive system, which are discussed below.

Early developments in the treatment of gastrointestinal disorders
Diarrhoea research

In 1956 Janssen Pharmaceutica discovered the antidiarrhoeal agent REASEC™ (diphenoxylate). This drug has been widely used over the past 30 years. It even travelled to the moon as part of the medicine kit on the Apollo space flights.

 
Research In 1969 IMODIUM™ (loperamide) was synthesized. Made available in 1974, it is probably the best-known drug for the treatment of travellers' diarrhoea in the world.
 

Motility research
Attention then turned to the search for an anti-vomiting drug. Research centred on new findings regarding the role of dopamine receptors in the chemoreceptor trigger zone (CTZ), a region just outside the blood-brain barrier. Stimulation of these receptors often leads to vomiting.

Research In 1974 the Janssen Research Foundation discovered MOTILIUM™ (domperidone). This drug increases gastrointestinal motility and thus attacks the underlying cause of frequent upper gastrointestinal symptoms, such as early satiety, bloating, abdominal pain, nausea and vomiting.
 

Recent developments in the treatment of gastrointestinal disorders
PARIET™ (rabeprazole)
PARIET (rabeprazole sodium) is a new treatment for gastro-oesophageal reflux disease (GORD), duodenal and gastric ulcers. It works by suppressing acid, resulting in less acidic exposure to the lining of the stomach. Janssen-Cilag is marketing PARIET in a number of countries together with Eisai, which synthesized and developed the medicine.

Foundations for future growth
Future developments are numerous and varied. After the discovery of the antidiarrhoeal drug loperamide, Janssen's researchers succeeded in further refining the loperamide molecule to obtain a compound with even greater selectivity: loperamide oxide. Activated only when it reaches the intestinal cells, this drug may play a role in the treatment of diarrhoea in the future.

Chronic constipation has a significant impact on quality of life. While changes in diet and life-style sometimes alleviate the condition, in a substantial number of cases drug therapy is needed. Laxatives are frequently used, but are sometimes not appropriate for chronic treatment and do not relieve all symptoms involved. Research has shown that stimulation of 5-HT4 receptors along the gastro-intestinal tract enhances the motility of both the small and large intestine.

Do you want to know more about this subject?
Please explore www.diarree.be, our intersite which offers you all possbile answers on questions related to diarrhoea and its treatment.

 
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