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Jingfang Granule alleviates bleomycin-induced acute lung injury via CD200-CD200R immunoregulatory pathway.
Lv, Ke; Li, Mingyue; Sun, Chenghong; Miao, Yu; Zhang, Yan; Liu, Yang; Guo, Jianshuang; Meng, Qing; Yao, Jingchun; Zhang, Guimin; Li, Jing.
  • Lv K; The State Key Laboratory of Medicinal Chemical Biology & College of Chemistry, Nankai University, Tianjin, 300071, China. Electronic address: lk2387723328@gmail.com.
  • Li M; College of Pharmacy, Nankai University, Tianjin, 300071, China. Electronic address: lmy1137534123@163.com.
  • Sun C; State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co. Ltd., Linyi, 276005, China. Electronic address: sch658@163.com.
  • Miao Y; State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co. Ltd., Linyi, 276005, China. Electronic address: mystery02@163.com.
  • Zhang Y; The State Key Laboratory of Medicinal Chemical Biology & College of Chemistry, Nankai University, Tianjin, 300071, China. Electronic address: zy0808080808@163.com.
  • Liu Y; College of Pharmacy, Nankai University, Tianjin, 300071, China. Electronic address: liuyanghbnd@163.com.
  • Guo J; College of Pharmacy, Nankai University, Tianjin, 300071, China. Electronic address: jshguo@mail.nankai.edu.cn.
  • Meng Q; College of Pharmacy, Nankai University, Tianjin, 300071, China. Electronic address: mengqing19920220@163.com.
  • Yao J; State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co. Ltd., Linyi, 276005, China. Electronic address: yaojingchun@yeah.net.
  • Zhang G; State Key Laboratory of Generic Manufacture Technology of Chinese Traditional Medicine, Lunan Pharmaceutical Group Co. Ltd., Linyi, 276005, China. Electronic address: lunanzhangguimin@yeah.net.
  • Li J; The State Key Laboratory of Medicinal Chemical Biology & College of Chemistry, Nankai University, Tianjin, 300071, China; College of Pharmacy, Nankai University, Tianjin, 300071, China. Electronic address: jinglink@nankai.edu.cn.
J Ethnopharmacol ; 311: 116423, 2023 Jul 15.
Article in English | MEDLINE | ID: covidwho-2270017
ABSTRACT
ETHNOPHARMACOLOGICAL RELEVANCE Jingfang granules (JF), one famous traditional Chinese formula in "She Sheng Zhong Miao Fang" written by Shi-Che Zhang during the Ming Dynasty era, has been widely used to prevent epidemic diseases in history and now was recommended for the treatment of coronavirus disease 2019 (COVID-19) in China. However, the roles of JF against acute lung injury and its mechanisms remain unclear. AIM OF THE STUDY Acute lung injury (ALI) and its progressive acute respiratory distress syndrome (ARDS) are a continuum of lung inflammatory disease with high morbidity and mortality in clinic, especially in COVID-19 patients. The present study aims to investigate the effect of JF on ALI and clarify its underlying mechanisms for clinical application in COVID-19 control.

METHODS:

Bleomycin-induced ALI mice were given oral gavage daily for seven days with or without Jingfang granules (2, 4 g/kg). The body weight, lung wet/dry weight ratios, lung appearance and tissue histopathology were evaluated. Quantitative real-time PCR, biochemical bronchoalveolar lavage fluids analysis was used to determine the gene expression of proinflammation factor and infiltrated inflammatory cells in lung. Immunofluorescence image and western blot were used to detect the markers of alveolar macrophages (AMs), endothelial cell apoptosis and changes of CD200-CD200R pathway.

RESULTS:

Firstly, histopathological analysis showed that JF significantly attenuated pulmonary injury and inflammatory response in ALI mice. Then, cytokine detection, inflammatory cells assay, and JNKs and p38 pathway analysis indicated that the recruitment and activation of alveolar macrophages was the main reason to cause ALI and JF could reverse this variation. Next, immunofluorescence staining and TUNEL assay showed that JF upregulated the expression of CD200 and suppressed the apoptosis of alveolar endothelial cells. Finally, double immunofluorescence staining of CD200 and CD11c indicated that the seriously damaged tissue had the lower CD200 while more AMs infiltration, which was confirmed by RT-PCR analysis of CD200/CD200R.

CONCLUSIONS:

Jingfang granules can protect lung from acu te injury and mitigate the recruitment and overactive AMs-induced inflammation via CD200-CD200R immunoregulatory signal axis, which will provide an experimental basis for Jingfang granules clinical applications in COVID-19.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Acute Lung Injury / COVID-19 Type of study: Experimental Studies / Prognostic study Topics: Traditional medicine Limits: Animals Language: English Journal: J Ethnopharmacol Year: 2023 Document Type: Article

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Acute Lung Injury / COVID-19 Type of study: Experimental Studies / Prognostic study Topics: Traditional medicine Limits: Animals Language: English Journal: J Ethnopharmacol Year: 2023 Document Type: Article