The anti-inflammatory effects of pentaherbs formula on ovalbumin-induced asthmatic mice model
Invited conference paper presented and published in conference proceedings


Other information
AbstractIntroduction
Allergic asthma is an inflammatory airway disease, affecting as many as 334 million people worldwide. Inhaled steroids have long been used as the major treatment of asthma. Yet, a long-term use of steroids may bring undesirable effects. Previous studies show that pentaherbs formula (PHF), which consists of five traditional Chinese herbal medicines, flos lonicerae, herba menthae, cortex phellodendri, cortex moutan and rhizoma atractylodis at w/w ratio of 2:1:2:2:2 exhibited therapeutic potential in treating oxazolone-induce datopic dermatitis-like mice model.

Objectives
As allergic asthma and atopic dermatitis are immunologically related to each other, we hypothesize that PHF also poses potential anti-inflammatory and immunomodulatory activities on asthmatic mice. This study aims at investigating the potential anti-inflammatory and immunomodulatory activities of PHF in asthmatic mice model.

Methods
Acute asthmatic mouse models were established by sensitizing the BALB/c mice with an immunogen 20 µg ovalbumin (OVA) - Al(OH)3 by i.p. administration on day 1 and day 15; followed by challenging the mice with the same immunogen on day 27, 28 and 29. PHF water extract (920 mg/kg/day) was administered to the mice by intragastrical delivery twice a day on day 1, 2, 3, 15, 16, 17, and/or from day 22 to 29. One day after the last challenge, the airway hyper-responsiveness was measured in the enhanced pause (penh) value with Buxco Whole Body Plethysmography. Serum were collected for the determination of total IgE and OVA-specific IgE, and inflammatory cytokines and chemokine by ELISA and Multiplex assay,respectively.

Results
Upon a 50 mg/mL methacholine challenge, the penh value of the asthmatic mice under a 14-day PHF treatment is significantly improved when compared to the sham group (p<0.05). However, an eight-day PHF treatment did not affect the airway hyperresponsiveness of the mice (p<0.05). Besides, intragastrical administration of PHF to the mice model twice a day does not affect the weight of the mice.

Conclusions
In this study, pentaherbs formula was found to improve the airway hyperresponsiveness of ovalbumin-induced asthmatic mice, indicating the potential use of PHF as a supplement for treating allergic diseases.
Acceptance Date13/03/2017
All Author(s) ListTsang S.M., Zhu J., Liu D., Shaw P.C., Hon K.L., Leung P.C., Wong C.K.
Name of ConferenceEAACI Congress 2017
Start Date of Conference17/06/2017
End Date of Conference21/06/2017
Place of ConferenceHelsinki
Country/Region of ConferenceFinland
Year2017
Month6
LanguagesEnglish-United Kingdom

Last updated on 2018-18-01 at 11:18