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Phillygenin attenuates LPS-induced acute lung injury of newborn mice in infantile pneumonia
1Department of Pediatrics, The First Affiliated Hospital of Medical College of Shihezi University, 832000 Shihezi City, Xinjiang Uygur Autonomous Region, China
2Department of Pediatrics, The Third Xiangya Hospital of Central South University, 410013 Changsha, Hunan Province, China
DOI: 10.22514/sv.2021.085 Vol.17,Issue 4,July 2021 pp.171-177
Submitted: 05 February 2021 Accepted: 09 March 2021
Published: 08 July 2021
*Corresponding Author(s): Qian Cai E-mail: caiqian_054@163.com
Purpose: The aim of this study was to assess the effect of phillygenin (PHI) on lipopolysaccharide (LPS)-induced acute lung injury (ALI) and understand its underlying mechanisms.
Methods: Mice were separated into four different groups at random, including LPS, LPS+ PHI (5 mg/kg), LPS + PHI (50 mg/kg) and control group. The two LPS + PHI groups were intraperitoneally administered with PHI after LPS intratracheal administered for 1 h. Subsequently, the lung tissues of different groups were collected and evaluated by H&E staining and W/D (W/D) ratio. The inflammatory cytokines in BALF or lung tissue were also assessed. Western blot assay was applied to examine the expressions of TLR4, MyD88, and NF-κB.
Results: The ameliorated pathological changes and lung W/D ratio demonstrated that PHI dramatically suppressed the lung injury levels. PHI strikingly reduced the number of inflammatory cell counts and total protein concentration in BALF. In addition, PHI attenuated expression of IL-1β and TNF-α in BALF and lung tissue. Furthermore, it was confirmed that PHI alleviated LPS-induced ALI via TLR4/MyD88/NF-κB pathway.
Conclusions: Together the above results show that PHI attenuates LPS-induced ALI via inactivation of TLR4/MyD88/NF-κB pathway in newborn mice.
Phillygenin; Acute lung injury; TLR4; MyD88; NF-κB
Meiyan Wang,Qian Cai. Phillygenin attenuates LPS-induced acute lung injury of newborn mice in infantile pneumonia. Signa Vitae. 2021. 17(4);171-177.
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