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Evidence-Based Complementary and Alternative Medicine
Volume 2012 (2012), Article ID 908562, 12 pages
http://dx.doi.org/10.1155/2012/908562
Research Article

Hesperidin-3′-O-Methylether Is More Potent than Hesperidin in Phosphodiesterase Inhibition and Suppression of Ovalbumin-Induced Airway Hyperresponsiveness

1School of Respiratory Therapy, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
2Department of Otolaryngology, Taipei Medical University Hospital, Taipei 110, Taiwan
3Department of Dermatology, Taipei Medical University Hospital, Taipei 110, Taiwan
4Department of Pharmacology, College of Medicine, Taipei Medical University, Taipei 110, Taiwan
5Department of Medical Technology, College of Medicine, Taipei Medical University, Taipei 110, Taiwan

Received 18 May 2012; Accepted 27 August 2012

Academic Editor: Wagner Vilegas

Copyright © 2012 You-Lan Yang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Hesperidin is present in the traditional Chinese medicine, “Chen Pi,” and recently was reported to have anti-inflammatory effects. Therefore, we were interested in comparing the effects of hesperidin and hesperidin-3′-O-methylether on phosphodiesterase inhibition and airway hyperresponsiveness (AHR) in a murine model of asthma. In the present results, hesperidin-3′-O-methylether, but not hesperidin, at 30 μmol/kg (p.o.) significantly attenuated the enhanced pause ( ) value, suppressed the increases in numbers of total inflammatory cells, macrophages, lymphocytes, neutrophils, and eosinophils, suppressed total and OVA-specific immunoglobulin (Ig)E levels in the serum and BALF, and enhanced the level of total in the serum of sensitized and challenged mice, suggesting that hesperidin-3′-O-methylether is more potent than hesperidin in suppression of AHR and immunoregulation. The different potency between them may be due to their aglycons, because these two flavanone glycosides should be hydrolyzed by β-glucosidase after oral administration. Neither influenced xylazine/ketamine-induced anesthesia, suggesting that they may have few or no adverse effects, such as nausea, vomiting, and gastric hypersecretion. In conclusion, hesperidin-3′-O-methylether is more potent in phosphodiesterase inhibition and suppression of AHR and has higher therapeutic ( ) ratio than hesperidin. Thus, hesperidin-3′-O-methylether may have more potential for use in treating allergic asthma and chronic obstructive pulmonary disease.