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    Crocin Suppresses Inflammatory Response in LPS-Induced Acute Lung Injury (ALI) Via Regulation of HMGB1/TLR4 Inflammation Pathway
    (Dokuz Eylul University, 31 Mayıs 2024) Ceylan, Tayfun; Akın, Ali; Kaymak, Emin; Varinli, Şaban; Toluk, Ayşe
    Background and Purpose: The most significant pathogen hypothesized to be causing the formation of Acute lung injury (ALI) in sepsis is thought to be lipopolysaccharide (LPS), a key endotoxin component of gram-negative bacteria. The main objective of this study is to determine possible anti-inflammatory effects of crocin (CRO) which has many biological properties such as anti-inflammatory, antioxidant, and anti-apoptotic in LPS-induced ALI. Methods: 40 Wistar albino rats were divided into four groups: Control (no treatment), CRO (given 50 mg/kg crocin for 9 days), LPS (given 30 mg/kg LPS at 9th day), LPS+CRO (given 50 mg/kg crocin for 9 days and 30 mg/kg LPS at 9th day). After experimental, rats were sacrificed and lungs were extracted. Histological examinations were performed in the lung tissue and the changes in the HMGB1 and TLR4 expressions were determined via immunohistochemical staining. Results and Conclusion: Hemorrhage, mononuclear cell infiltration and HMGB1 and TLR4 expressions significantly increased in the LPS group. However, CRO administrations exerted a strong protective effect on the lungs in terms of these parameters in LPS+CRO group. According to our results, we suggest that CRO can be considered as a protective agent against LPS induced ALI via inhibition of HMGB1/TLR4 pathway-mediated inflammatory response.