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Updated: Jul 26, 2025
Gastrointestinal Motility Monitor GIMM
Published on: December 1, 2010
Hypokinetic Activity of Menthofuran on the Gastrointestinal Tract in Rodents
Railson de Sousa Santos1, Paulo Humberto Moreira Nunes1, Geovanni de Morais Lima1
1Department of Biophysics and Physiology, Federal University of Piauí, PI, Teresina, Brazil.
Abstract:
The acute toxicity and hypokinetic activity induced by menthofuran on the gastrointestinal tract of rodents were investigated in the present study. An absence of acute toxicity was observed. Menthofuran delayed gastric emptying at oral doses of 25, 50, and 100 mg/kg in the experimental model of phenol red, as well as it reduced the intestinal transit at oral doses of 50 and 100 mg/kg. Interestingly, a scopolamine-similar hypokinetic effect was observed for menthofuran. In the experimental model of castor oil-induced intestinal hypermotility, menthofuran (50 and 100 mg/kg) reduced the number of loose stools as observed for the normal group. Additionally, menthofuran induced a marked concentration-dependent relaxation in rat ileum segments precontracted with KCl (EC50 = 0.059 ± 0.008 μg/mL) or carbachol (EC50 = 0.068 ± 0.007 μg/mL). These results suggest the possible decrease of calcium influx underlying the effects of menthofuran on the gastrointestinal tract, which opens the door for further study regarding this potential application for the treatment of gastrointestinal disorders, noting possible limitations of its use due to adverse effects in children.
Insights
Menthofuran shows no acute toxicity and exhibits hypokinetic effects on the gastrointestinal tract, potentially by reducing calcium influx. Further research is needed for its use in treating gastrointestinal disorders.
Area of Science:
- Pharmacology
- Gastroenterology
- Natural Products Chemistry
Background:
- Menthofuran, a compound found in various plants, has potential therapeutic applications.
- Gastrointestinal disorders represent a significant health burden globally.
- Understanding the mechanism of action of natural compounds on the GI tract is crucial for drug development.
Purpose of the Study:
- To investigate the acute toxicity of menthofuran.
- To evaluate the hypokinetic (slowing of movement) activity of menthofuran on the rodent gastrointestinal tract.
- To explore the potential mechanism of action of menthofuran on smooth muscle contraction.
Main Methods:
- Acute toxicity testing in rodents.
- Gastric emptying and intestinal transit studies using phenol red and castor oil models.
- In vitro studies on isolated rat ileum segments precontracted with KCl and carbachol.
Main Results:
- Menthofuran demonstrated no acute toxicity.
- It delayed gastric emptying and reduced intestinal transit in a dose-dependent manner.
- Menthofuran induced concentration-dependent relaxation of rat ileum, suggesting a possible decrease in calcium influx.
Conclusions:
- Menthofuran exhibits significant hypokinetic effects on the gastrointestinal tract.
- The observed effects may be mediated by a reduction in calcium influx.
- Menthofuran shows potential for treating gastrointestinal disorders, but further investigation is required, considering potential adverse effects in children.
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