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《贝母辛对内毒素诱导小鼠急性肺损伤保护作用的研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、时珍国医国药2014年第25卷第9期LISHIZHENMEDICINEANDMATERIAMEDICARESEARCH2014VOL.25NO.9贝母辛对内毒素诱导小鼠急性肺损伤保护作用的研究崔艳茹,刘海云,屈飞(1.江西中医药大学基础医学院,江西南昌330004;2.江西中医药大学药学院,江西南昌330004)摘要:目的初步探讨贝母辛对内毒素诱导小鼠急性肺损伤(acutelunginjury,ALI)保护作用及其可能机制。方法用乙醚麻醉小鼠,经鼻腔滴注脂多糖(1ipop01ysaccharide,LPS)(1mg/5mlPBS,每只501),构建小鼠急性肺损伤模型
2、。将小鼠随机分为对照组、LPS组和贝母辛+LPS组。观察各组小鼠血清LDH、MDA含量,肺组织病理学改变,肺泡灌洗液上清总蛋白、白细胞计数及其分类计数。结果LPS处理小鼠可明显上调血清LDH、MDA表达(P<0.01);LPS组肺组织病理学显示:气道上皮脱落,气道内有粘液分泌,肺泡结构呈实变,有大量炎症细胞渗出;LPS组肺泡灌洗液上清总蛋白、白细胞计数明显高于正常对照组(P<0.01)。贝母辛组均可有效降低急性肺损伤小鼠血清的LDH、MDA的表达(具有剂量依赖性),高剂量贝母辛组可明显减轻LPS所致肺组织病理学变化,减少粘液分泌;降低肺泡灌洗液中总蛋白、白细胞总数及
3、淋巴细胞和中性粒细胞分类计数。结论贝母辛可减轻LPS所致急性肺组织损伤。关键词:贝母辛;急性肺损伤;内毒素;保护作用D0I标识:doi:10.3969/i.issn.1008-0805.2014.09.029中图分类号:R285.5文献标识码:A文章编号:1008-0805(2014)09-2118-03Peimisineattenuatesacutelunginjuryinducedbylip0polysaccharideinmiceCUIYan—ru,LIUHai—yun,QUFei[1.Departmentofiology,JiangxiUniversityo
4、fTraditionalChineseMedicine(TCM),Nanchang330004,China;2.DepartmentofPharmacology,JiangxiUniversityofTCM,Nanchang330004,China]Abstract:0bjectiveTodeterminetheprotectiveeffectofPeimisineonacutelunginjury(ALI)inducedbylipopolysaccharide(LPS)anditsprotectivemechanismmice.MethodsThemicewere
5、randomlyallocatedintosham,LPSandPeimisine+LPSgroups.TheALImicewasinducedbyLPSafteretherization.ThePeimisinewasinjectedbybellycavity30minutespriortotheLPSehMlenge,onetime/d,3timestotally.Themicewerekilled24hafterthethirdPeimisineinjectiontoobservetheamountofLDH,MDAinplasma,thelungtissue
6、pathology,thetotalprotein,whitebloodcellanddifferentialcountinthebronchoalveolarlay—agefluid(BALF).ResultsLDH,MDAamountinplasma,Lungtissue,andBALFshowedseriousinflammatorychangesintheLPSgroup.ComparedwiththeLPSgroup,PeimisineattenuatesLungtissueinjury,LDHandMDAamountinALImiceinadosedep
7、endentmanner.Peimisine(0.12mg)loweredthetotalprotein,totalwhitebloodcells,lymphocyteandneutrophilicleukocyteinBALFcomparedwiththeLPSgroup.ConclusionPeimisinecanplayaprotectiveroleagainstLPS—inducedacutelunginjury.Keywords:Peimisine;Acutelunginjury;Lip0polysaccharide;Protectiveeffect急
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