药物调控PPAR-γ/RXR-α信号通路对改善丰宫并殖吸虫感染所致大鼠肺损伤的作用  

Drug-regulation of PPAR-γ/RXR-αsignal pathways on ameliorating lung injury induced by Paragonimus proliferus infection in rats

作　　者：华丽娟 李生浩 常国楫 刘思奇 丁洁 柏保利 张露 王晴晴 HUA Lijuan;LI Shenghao;CHANG Guoji;LIU Siqi;DING Jie;BAI Baoli;ZHANG Lu;WANG Qingqing(Department of Hepatology,The Third People’s Hospital of Kunming,Yunnan Clinical Center for Infectious Diseases,Kunming 650000,China;College of Public Health,Dali University,Dali 671000,Yunnan,China)

机构地区：[1]昆明市第三人民医院,云南省传染性疾病临床医学中心肝病综合科,昆明650000 [2]大理大学公共卫生学院,云南大理671000

出　　处：《中国寄生虫学与寄生虫病杂志》2023年第6期691-698,共8页Chinese Journal of Parasitology and Parasitic Diseases

基　　金：国家自然科学基金地区科学基金(82260408);云南省科技厅基础研究专项面上项目(202101AT070054);昆明市社会发展与科技惠民计划(2023-1-NS-002);昆明市卫健委卫生科研课题(2022-03-08-005);昆明市卫健委卫生科研课题(2022-03-08-011)。

摘　　要：目的探索通过药物调控过氧化物酶体增殖物激活受体γ/视黄醛X受体α(PPAR-γ/RXR-α)对改善丰宫并殖吸虫感染所致大鼠肺损伤的作用。方法从云南省疫源地采集溪蟹,分离丰宫并殖吸虫后尾蚴,于SD大鼠腹壁皮下注射后尾蚴(8条/鼠),感染大鼠分为高脂饮食组、罗格列酮组、蓓萨罗丁组,每组10只,分别予以高脂饮食(高脂饲料)、罗格列酮[3 mg/(kg•d)]、蓓萨罗丁[10 mg/(kg•d)]灌胃,连续给药7 d,以感染大鼠和健康大鼠分别为感染对照组和健康对照组。首次给药后28 d处死大鼠,取肺组织和心尖血液,制备肺组织切片,HE染色观察肺组织的损伤情况,并进行肺泡炎半定量评分;ELISA检测血清白细胞介素-1β(IL-1β)和肿瘤坏死因子α(TNF-α)水平;提取肺组织总蛋白,蛋白质免疫印迹(Western blotting)检测肺PPAR-γ/RXR-α信号通路[PPAR-γ、RXR-α、脂肪酸转运蛋白3(FATP3)、载脂蛋白A1(ApoA1)]、核因子κB(NF-κB)信号通路[p65、激活子蛋白1(AP1)]和janus激酶(JAK)/信号传导及转录激活(STAT)信号通路(JAK2、STAT3)关键靶分子蛋白的相对表达量。多组间比较采用单因素ANOVA分析。结果除蓓萨罗丁组2只大鼠感染失败外,其余大鼠均被感染成功,肺脏可见寄生虫囊包或在胸腔中可查见寄生虫。HE染色显示,感染对照组大鼠肺泡间隔中可见大量炎性细胞浸润,肺泡壁增厚,出现肺泡腔塌陷或闭合;高脂饮食组可见明显炎症损伤,与感染对照组相比较轻,肺泡腔充气略改善;罗格列酮组和蓓萨罗丁组肺泡间隔的炎性细胞较感染对照组明显减少,肺泡壁增厚程度明显减轻,肺泡腔充气明显改善。健康对照组、感染对照组、高脂饮食组、罗格列酮组、蓓萨罗丁组大鼠的肺泡炎半定量评分分别为(0.300±0.053)、(2.200±0.189)、(1.900±0.320)、(1.300±0.301)和(1.500±0.112)分(F=12.033,P<0.05)。ELISA检测结果显示,健康对照组、感染对照组、高脂饮食组�Objective To explore the effect of drug-regulation on peroxisome proliferator-activated receptor-γ/retinoid X receptor-α(PPAR-γ/RXR-α)signalling pathway to improve lung injury caused by Paragonimus proliferus infection in rats.Methods The P.proliferus were isolated from crabs collected in Yunnan Province,and SD rats were infected with 8 metacercariae per rat via subcutaneous injection at abdominal wall.The infected rats were divided into the high-fat-diet group,rosiglitazone group and bexarotene group,with 10 rats in each group,and were given with high-fat-feeding(high-fat diet),rosiglitazone[3 mg/(kg·d)],bexarotene[10 mg/(kg·d)]by gavage for 7 days.The infected and healthy rats were used as the infection control group and healthy control group.On 28 d post-mediated,the rats were sacrificed to collect lung tissue and heart apical blood.The lung tissue sections were prepared and stained with hematoxylin-eosin to assess the tissue damage and score the alveolitis semi-quantitatively.Serum interleukin-1β(IL-1β)and tumor necrosis factorα(TNF-α)levels were detected by ELISA.The lung tissue total protein was extracted for examining relative expression levels of PPAR-γ/RXR-αsignalling pathway-related key target proteins indluding PPAR-γ,RXR-α,fatty acid transporter 3(FATP3),apolipoprotein A1(ApoA1),nuclear factor kappa-B(NF-κB)signalling pathway proteins[p65,activator protein(AP1)],janus kinase(JAK)/signal transducer and activator of transcription(STAT)signalling pathway proteins(JAK2,STAT3)by Western blotting.The inter-group data were compared using single-factor ANOVA analysis.Results All rats were successfully infected except 2 rats in the bexarotin group.Parasitic cysts were found in the lungs or the chest cavity.HE staining showed that in the infection control group,a large number of inflammatory cells infiltrated the alveolar septum,the alveolar wall thickened,and the alveolar cavity collapsed or closed.In the high-fat diet group,obvious inflammation injury was shown.Compared with the infection contr

关 键 词：并殖吸虫病 丰宫并殖吸虫 过氧化物酶体增殖物激活受体γ 视黄醛X受体α 蓓萨罗丁 

分 类 号：R383.23[医药卫生—医学寄生虫学]