Synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism
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Synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism
Chinese Journal of Integrative MedicineVol. 19, Issue 1, Pages: 29-35(2013)
Affiliations:
1. Biomedical Research School, Beijing University of Chinese Medicine,Beijing,China
2. Experimental Center, China Academy of Chinese Medical Sciences,Beijing,China
Author bio:
Funds:
Supported by the National Basic Research Program of China (973 Program, No. 2009CB522704) and the National Natural Science Foundation of China (No. 30672676)
Li, Yh., Zheng, Fj., Huang, Y. et al. Synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism., Chin. J. Integr. Med. 19, 29–35 (2013). https://doi.org/10.1007/s11655-011-0763-6
Yu-hang Li, Feng-jie Zheng, Ying Huang, et al. Synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism. [J]. Chinese Journal of Integrative Medicine 19(1):29-35(2013)
Li, Yh., Zheng, Fj., Huang, Y. et al. Synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism., Chin. J. Integr. Med. 19, 29–35 (2013). https://doi.org/10.1007/s11655-011-0763-6DOI:
Yu-hang Li, Feng-jie Zheng, Ying Huang, et al. Synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism. [J]. Chinese Journal of Integrative Medicine 19(1):29-35(2013) DOI: 10.1007/s11655-011-0763-6.
Synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism
摘要
To investigate the synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism for Fei (肺)-targeting. Forty Wistar rats were randomly divided into five groups (8 per group): the sham-operated group
model group
Radix Platycodon group
Flos Lonicera and Fructus Forsythia (LF) group
and Radix Platycodon
Flos Lonicera and Fructus Forsythia combination (PLF) group
using a random number table. A rat chronic obstructive pulmonary disease (COPD) model was established by passive smoking and intratracheal instillation of lipopolysaccharide (LPS). The treatments started from the 15th day of passive smoking for a total duration of 14 days. At the end of the treatment
changes in the following measurements were determined: lung histopathology
inflammatory cytokines including tumor necrosis factor α (TNF-α)
transforming growth factor β (TGF-β) and interleukin IL-1β (IL-1β) in bronchoalveolar lavage fluid (BALF)
and mRNA expression of endogenous active substance intestinal trefoil factor 3 (TFF3) in the lung tissue. Light microscopy showed that compared with the sham-operated group
rats in the COPD model group had disrupted alveolar structure
collapsed local alveoli
significantly widened or even fused alveolar septa
and massive infiltration of inflammatory cells in the alveolar wall and interstitium. In addition
significant bronchial epithelium hyperplasia
partially shed epithelia
and marked inflammatory cell infiltration in the bronchial wall and its surrounding tissues were noticed. Electron microscopy showed that rats in the model group had degeneration of alveolar type II epithelial cell; reduction
breakage or even loss of cell surface microvilli; swollen mitochondria with disappearing cristae and vacuole-like structure; and
increased secondary lysosomes in alveolar macrophages. The TNF-α
TGF-β and IL-1β levels and white blood cell (WBC) count in BALF were significantly increased (P<0.01 or P<0.05) and TFF3 mRNA expression in the lung tissue was significantly reduced (P<0.01). After treatment
the pathological morphology of lung injury was less severe in all three treatment groups. In addition
TGF-β and IL-1β and WBC count in BALF were decreased (P<0.01 or P<0.05)
and TFF3 mRNA expression in the lung tissue was significantly increased in the PLF group (P<0.01). Compared with the LF group
the IL-1β in BALF was significantly decreased P<0.05)
and TFF3 mRNA expression was significantly increased (P<0.05) in the PLF group. Radix Platycodon synergizes with herbs for cleaning-heat and detoxification in reducing inflammatory injury in a rat model of COPD. The synergistic anti-inflammatory effect is reflected in the improvement in pathological changes and in the reduction of IL-1β levels in BALF. The mechanism of such synergistic action may be related to its effect on maintaining the TFF3 mRNA expression and Fei-targeting function.
Abstract
To investigate the synergistic anti-inflammatory effect of Radix Platycodon in combination with herbs for cleaning-heat and detoxification and its mechanism for Fei (肺)-targeting. Forty Wistar rats were randomly divided into five groups (8 per group): the sham-operated group
model group
Radix Platycodon group
Flos Lonicera and Fructus Forsythia (LF) group
and Radix Platycodon
Flos Lonicera and Fructus Forsythia combination (PLF) group
using a random number table. A rat chronic obstructive pulmonary disease (COPD) model was established by passive smoking and intratracheal instillation of lipopolysaccharide (LPS). The treatments started from the 15th day of passive smoking for a total duration of 14 days. At the end of the treatment
changes in the following measurements were determined: lung histopathology
inflammatory cytokines including tumor necrosis factor α (TNF-α)
transforming growth factor β (TGF-β) and interleukin IL-1β (IL-1β) in bronchoalveolar lavage fluid (BALF)
and mRNA expression of endogenous active substance intestinal trefoil factor 3 (TFF3) in the lung tissue. Light microscopy showed that compared with the sham-operated group
rats in the COPD model group had disrupted alveolar structure
collapsed local alveoli
significantly widened or even fused alveolar septa
and massive infiltration of inflammatory cells in the alveolar wall and interstitium. In addition
significant bronchial epithelium hyperplasia
partially shed epithelia
and marked inflammatory cell infiltration in the bronchial wall and its surrounding tissues were noticed. Electron microscopy showed that rats in the model group had degeneration of alveolar type II epithelial cell; reduction
breakage or even loss of cell surface microvilli; swollen mitochondria with disappearing cristae and vacuole-like structure; and
increased secondary lysosomes in alveolar macrophages. The TNF-α
TGF-β and IL-1β levels and white blood cell (WBC) count in BALF were significantly increased (P<0.01 or P<0.05) and TFF3 mRNA expression in the lung tissue was significantly reduced (P<0.01). After treatment
the pathological morphology of lung injury was less severe in all three treatment groups. In addition
TGF-β and IL-1β and WBC count in BALF were decreased (P<0.01 or P<0.05)
and TFF3 mRNA expression in the lung tissue was significantly increased in the PLF group (P<0.01). Compared with the LF group
the IL-1β in BALF was significantly decreased P<0.05)
and TFF3 mRNA expression was significantly increased (P<0.05) in the PLF group. Radix Platycodon synergizes with herbs for cleaning-heat and detoxification in reducing inflammatory injury in a rat model of COPD. The synergistic anti-inflammatory effect is reflected in the improvement in pathological changes and in the reduction of IL-1β levels in BALF. The mechanism of such synergistic action may be related to its effect on maintaining the TFF3 mRNA expression and Fei-targeting function.
关键词
Radix Platycodoncleaning-heat and detoxificationChronic Obstructive Pulmonary Diseaseintestinal trefoil factor 3Fei-targeting
Keywords
Radix Platycodoncleaning-heat and detoxificationChronic Obstructive Pulmonary Diseaseintestinal trefoil factor 3Fei-targeting
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