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Ethanolic extract of Achillea wilhelmsii C. Koch improves pulmonary function and inflammation in LPS-induced acute lung injury mice

Niloofar Honari,Parastoo Shaban,S. Nasseri,Mehran Hosseini

Published 2021 in Journal of Complementary and Integrative Medicine

ABSTRACT

Abstract Objectives Acute lung injury (ALI) is a life-threatening pulmonary dysfunction associated with severe inflammation. There are still no effective pharmacological therapies for the treatment of ALI. In this concern, several anti-inflammatory agents could be used as add-on therapy to inhibit inflammation. Achillea wilhelmsii (AW) C. Koch is a well-known medicinal plant in the Iranian ethnomedical practices with anti-inflammatory activity. This study was aimed to evaluate the efficacy of ethanolic extract of AW on lipopolysaccharide (LPS)-induced ALI in mice. Methods The ALI model was established via the intra-tracheal (i.t.) administration of LPS (2 mg/kg) to male BALB/c mice. The ALI mice were divided into four groups (n=8 each) which intra-peritoneally (i.p.) treated with repeated doses of saline (model), dexamethasone (2 mg/kg), and AW (150–300 mg/kg) 1, 11 and 23 h post LPS administration. Twenty-four hours after the LPS challenge, bronchoalveolar lavage fluid (BALF) and lung tissue were evaluated for inflammatory cell influx, level of tumor necrosis factor-α (TNF-α) and histopathological changes. Results The AW (150–300 mg/kg) treated mice showed lower inflammatory cells infiltration in BALF and TNF-α level when compared to the model group. In addition, LPS induced several pathological alterations such as edema, alveolar hemorrhage and inflammatory cell infiltration into the interstitium and alveolar spaces. Treatment with AW significantly reduced LPS-induced pathological injury. Conclusions Taken together, the data here indicated that AW may be considered as a promising add-on therapy for ALI.

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