Dissertation > Medicine, health > Chinese Medicine > Of Pharmacy > Pharmacology > Chinese medicine Experimental Pharmacology

Effect of Qingwen Baidu Decoction on the Expression of NF-κB and the Protection for the Acute Lung Injury Rats

Author ZhangChangZhi
Tutor LuoXianFang
School Zhejiang University of Traditional Chinese Medicine
Course Integrative Medicine
Keywords Qingwenbaiduyin drink Acute lung injury NF-κB IL-1β IL-13
CLC R285.5
Type Master's thesis
Year 2010
Downloads 53
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Objective To observe Qingwen Baidu drink on LPS-induced acute lung injury in nuclear factor-κB expression in rat lung tissue and serum cytokines IL-1β and work in the L-13 content to explore Qingwenbaiduyin drink role in the treatment of ALI and intervention mechanisms. Method 1. Selected 144 healthy male SD rats were randomly divided into 6 groups, n = 24, respectively, for the normal control group, model group, prednisone group and Qingwenbaiduyin drink large, small dose group. Intratracheal instillation of lipopolysaccharide solution (2mg/kg) replication acute lung injury (ALI) model, for two consecutive days. Each treatment group after the second infusion of complete LPS solution for 1 hour, with a saline diluted with the corresponding drug to 4ml orally twice a day. 24h, 48h were gavage killed six rats, all remaining rats were sacrificed at 72h, and gather the necessary specimens; 2. Than by measuring bronchoalveolar lavage fluid (BALF) leukocyte total number of lung tissue wet and dry changes in lung coefficient, were observed HE staining of lung tissue pathological changes in the evaluation of the degree of lung injury and Qingwenbaiduyin drink therapeutic effect; detected by ELISA in serum cytokines workers L-1β and IL-13 content; 4 by Western blot in lung tissue nuclear factor-κB expression level; 5. SPSS13.0 statistical software analysis and processing data. Results 1.LPS induced ALI rat lung tissue pathological examination results show alveolar structural damage or consolidation, interstitial pulmonary edema, a large number of inflammatory cell infiltration, alveolar space and pulmonary interstitial visible focal inflammatory cell infiltration, and a large number of red blood cells exudation, its WBC count in BALF were significantly higher wet and dry ratio and lung coefficient of lung tissue were significantly increased, compared with normal control group, a significant or very significant difference (P lt; 0.05 or P lt; 0.01); Qingwen Baidu Yin dose treatment group the total number of leukocytes in BALF decreased alveolar damage, infiltration of inflammatory cells and red blood oozing a greater degree of improvement, the pathological inflammation integral (except 72h small dose group) decreased rat lung wet and dry high-dose group, each dose group rats decreased lung coefficient decreased; compared with the same phase model group showed a significant difference or very significant difference (P (0.05 or P lt; 0.01 ); 3. Qingwenbaiduyin drink each dose treatment group (except 24h low-dose group) in rat serum IL-1β content decreased IL-13 levels significantly increased, compared with the same time-phase model group were significantly or very significant difference (P lt; 0.05 or P lt; 0.01) difference: Qingwen Baidu Yin dose treatment group 48h Qingwenbaiduyin drink large, middle dose group and 72h after each dose group rat lung organizations in the NF-K B p65 expression were reduced compared with the phase model group at the same time there were significant differences or very significant difference (P lt; 0.05 or P lt; 0.01); 5 Qingwen Baidu Yin large doses treatment group, with the exception of the 48h lung tissue NF-κBp65 in the expression was significantly higher than those in the prednisone group (P lt; 0.05) outside, the rest of the observation points and prednisone group there was no significant sex difference (P gt; 0.05 ) Conclusion 1. Qingwenbaiduyin drink can reduce lipopolysaccharide-induced acute lung injury in rat lung tissue damage extent, to some extent, to reduce the accumulation of inflammatory cells in the lungs, infiltration, exudation, played a relatively clear lung protection role; Qingwenbaiduyin drink through effective regulation lipopolysaccharide induced acute lung injury in rat serum inflammatory cytokines IL-1β and anti-inflammatory cytokine IL-13 expression levels promote inflammation and anti-inflammatory cytokines tends dynamic balance, thereby reducing the lung inflammatory cell infiltration, played the role of repair protection damage lung tissue; 3 Qingwenbaiduyin the drink can effectively reduce lipopolysaccharide induced NF-κB expression in lung tissue of rats with acute lung injury by inhibition of NF- κB activation and the generation of inflammatory cytokines, the inflammatory response inhibition; 4. lipopolysaccharide induced acute lung injury the early use Qingwenbaiduyin drink, can effectively reduce the degree of damage of the lung tissue, reduce lung inflammation reaction; With the extension of the high-dose administration time applications Qingwen Baidu Decoction treatment of lipopolysaccharide induced acute lung injury may achieve similar efficacy of treatment with prednisone.

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