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Abstract Title:

Anti-asthma potential of crocin and its effect on MAPK signaling pathway in a murine model of allergic airway disease.

Abstract Source:

Immunopharmacol Immunotoxicol. 2015 Jun ;37(3):236-43. Epub 2015 Mar 10. PMID: 25753844

Abstract Author(s):

Youyi Xiong, Junsong Wang, Hao Yu, Xiaolin Zhang, Chenggui Miao

Article Affiliation:

Youyi Xiong

Abstract:

CONTEXT: Crocin, a diterpenoid glucoside, has multitudinous activities such as anti-inflammation, anti-allergy, anti-oxidation and relaxing smooth muscles.

OBJECTIVE: In this study, the potential of crocin as an anti-asthma agent was investigated in a murine model.

MATERIALS AND METHODS: BALB/c mice were sensitized and challenged by ovalbumin (OVA) to induce allergic airway inflammation, with crocin administered one hour before every OVA challenge. Airway hyper-reactivity was evaluated by lung function analysis systems. Leukocyte counts in bronchoalveolar lavage fluid (BALF) were measured by a hemocytometer and Diff-Quick-stained smears. Lung tissues were stained with hematoxylin-eosin, Congo red and methylene blue for histopathological inspection. Inflammatory mediators in serum, BALF and lung were measured by ELISA or RT-PCR. Effects of crocin on MAPK signaling pathways were investigated by western blot analysis.

RESULTS: Crocin significantly suppressed airway inflammation and hyper-reactivity, reduced levels of BALF interleukin (IL-4), IL-5, IL-13 and tryptase, lung eosinophil peroxidase and serum OVA-specific IgE, and inhibited the expression of lung eotaxin, p-ERK, p-JNK and p-p38 in the OVA-challenged mice.

CONCLUSIONS: These results demonstrated that the suppression of crocin on airway inflammation and hyper-reactivity in a murine model, thus crocin might have a great potential to be a candidate for the treatment of asthma.

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Sayer Ji
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