Beneficial effects of polysaccharides on "two-hit" acute lung injury and endotoxic fever in rats associated with anti-complementary activities.
10.1016/j.apsb.2017.11.003
- Author:
Yan LU
1
;
Yun JIANG
1
;
Lijun LING
1
;
Yunyi ZHANG
2
;
Hong LI
2
;
Daofeng CHEN
1
Author Information
1. Department of Pharmacognosy, School of Pharmacy, Fudan University, Shanghai 201203, China.
2. Department of Pharmacology, School of Pharmacy, Fudan University, Shanghai 201203, China.
- Publication Type:Journal Article
- Keywords:
Acute lung injury;
Anti-complementary;
Fever;
Houttuynia cordata;
Polysaccharides
- From:
Acta Pharmaceutica Sinica B
2018;8(2):218-227
- CountryChina
- Language:English
-
Abstract:
Thunb. is a traditional herb used for clearing heat and eliminating toxins, and has also been used for the treatment of severe acute respiratory syndrome (SARS). the crude polysaccharides (CHCP) exhibited potent anti-complementary activity through both the classical and alternative pathways by acting on components C3 and C4 of the complement system without interfering with the coagulation system. This study was to investigate the preventive effects of CHCP on acute lung injury (ALI) induced by hemorrhagic shock plus lipopolysaccharide (LPS) instillation (two-hit) and LPS-induced fever in rats. CHCP significantly attenuated pulmonary injury in the "two-hit" ALI model by reducing pulmonary edema and protein exudation in bronchoalveolar lavage fluid (BALF). In addition, it reduced the deposit of complement activation products in the lung and improved oxidant-antioxidant imbalance. Moreover, CHCP administration inhibited fever in rats, reduced the number of leukocytes and restored serum complement levels. The inhibition on the inappropriate activation of complement system by CHCP may play an important role in its beneficial effects on inflammatory diseases. The anti-complementary polysaccharides are likely to be among the key substances for the heat-clearing function of .
