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Article Publish Status: FREE
Abstract Title:

Effects of crocin on T-bet/GATA-3 ratio, and miR-146a and miR-106a expression levels in lung tissue of ovalbumin-sensitized mice.

Abstract Source:

Iran J Basic Med Sci. 2022 Oct ;25(10):1267-1274. PMID: 36311189

Abstract Author(s):

Mohammad Reza Aslani, Zahra Jafari, Reza Rahbarghazi, Jafar Rezaie, Aref Delkhosh, Mahdi Ahmadi

Article Affiliation:

Mohammad Reza Aslani

Abstract:

Objectives: Although various studies have revealed the beneficial effects of crocin (derived from saffron), such as anti-inflammatory, anti-cancer, antioxidant, and immune modulator, however, its exact mechanism is unknown. The present study aimed to investigate the effect of crocin on the expression ratio of T-bet/GATA-3 as an indicator of altered immune responses in the lung tissue of ovalbumin (OVA)-sensitized mice. In addition, the effect of crocin on the expression level of miR-146a and miR-106a in the lung tissue OVA-sensitized mice was investigated.

Materials and Methods: Mice were randomly divided into five groups (n=6): Control; OVA, OVA + Crocin 25, OVA + Cro 50, and OVA + Cro100 groups. Crocin was administrated intraperitoneally at doses of 25, 50, and 100 mg/kg for five consecutive days. One day after asthma induction, animals were euthanized, and lungs were sampled for pathological and gene expression analysis.

Results: OVA-sensitization led to increased inflammation and histopathological changes in the lung tissue of mice. In addition, GATA-3 expression increased (<0.001) and T-bet expression decreased (<0.001) in OVA-sensitized groups. The T-bet/GATA3 ratio was also reduced markedly in asthma groups (<0.001). Furthermore, increased expression of miR-146a and miR-106a levels was evident in the lung tissue of OVA-sensitized mice (<0.001 for both). Intervention with high concentrations of crocin (50 and 100 mg/kg) significantly reduced airway inflammation, GATA-3 expression, miR-146a expression, and miR-106a expression and corrected the T-bet/GATA-3 ratio (<0.05 to<0.001).

Conclusion: Treatment with crocin led to a decrease in the severity of lung inflammation in OVA-sensitized mice, which is probably through the reduction of the T-bet/GATA-3 ratio, and mir-146a and mir-106a expression level.

Study Type : Animal Study

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