第37卷第2期2014年4月
遵义医学院学报
JournalofZunyiMedicalUniversity
V01.37No.2
Apr.2014
临床医学研究
Bcl一2、Bax在胃癌及胃癌前病变中的表达与细胞凋亡的关系
伍冬梅1,李春鸣2
遵义医学院组织胚胎学教研室,贵州遵义563099;2.遵义医学院病理学教研室,贵州遵义563099)
[摘要]目的探讨胃癌及胃癌前病变组织中Bel一2、Bax的表达情况及其与细胞凋亡的相互关系。方法采用免疫组织化学sP法分别检测lO例正常胃黏膜、60例慢性萎缩性胃炎伴肠化生、30例异型增生、50例胃癌中Bcl一2、Bax蛋白的表达情况,采用末端脱氧核苷酸转移酶介导的dUTP缺口末端标记技术(TUNEL法)检测组织切片中细胞凋亡的情况。结果慢性萎缩性胃炎伴肠化生、异型增生、胃癌中Bel一2蛋白表达阳性率分别为31.7%,43.3%,62.0%,均显著高于正常胃黏膜(P<0.01)。慢性萎缩性胃炎伴肠化生、异型增生中Bax蛋白阳性率分别为55.0%,30.0%,其阳性率均显著高于胃癌(P<0.01,P<0.05)。Bel一2蛋白表达阳性慢性萎缩性胃炎伴肠化生、异型增生和胃癌中凋亡细胞指数(AI)显著低于Bcl一2蛋白阴性组(P<0.05),Bcl一2蛋白表达阳性率与AI值呈负相关。Bax蛋白表达阳性慢性萎缩性胃炎伴肠化生、异型增生和胃癌中AI显著高于Bax蛋白阴性组(P<0.05),Bax蛋白表达阳性率与AI值呈正相关。结论胃黏膜癌变过程中,AI、凋亡调控基因Bcl一2和Bax的比值逐渐增加,说明它们在胃癌演变过程中可能起重要作用。[关键词]胃癌;胃癌前病变;Bcl一2;Bax;细胞凋亡[中图法分类号]R735.2
[文献标志码]A
[文章编号]1000-2715(2014)02-0201-03
RelationshipbetweenBcl——2andBaxexpressionsingastriccarcinomaand
precancerouslesionsand
a
Dongmei1,LiChunmin92
(1.DepartmentofHistologyandEmbryology,ZunyiMedicalUniversity,ZunyiGuizhou563099,China;2.Depart—
mentofPathology.ZunyiMedicalUniversity.ZunyiGuizhou
563099,China)
ofnormalgastricofgastriccarci-
『Abstract]Objective
and
Drecancerous
cases
ToinvestigatetherelationshipbetweenBcl一2andBaxexpressionsingastriccarcinoma
lesionsand
apoptosis.Methods
cases
TheBcl一2andBaxexpressionsin10
cases
mucosa.60
ofintestinalmetaplasia,30
ofepithelialdysplasiaofstomachand50
cases
nomasweredetectedbvimmunohistochemicalSPmethod.TheapoptosisindexwasexaminedbyTUNELmethod.
RusultsTheBcl—2一positivecell
rate
inintestinalmetaplasia,epithelialdysplasiaofstomachandgastriccarci-
nomaswere31.7%,43.3%and62.0%,respectively,whichwassignificantlyhigherthanthatinthenormalgas—tric
were
mucosa(P<0.01).TheBax—positivecell
55.0%and30.0%,respectively,which
apoptotic
rate
inintestinalmetaplasiaandepithelialdysplasiaofstomach
was
significantlyhigherthanthatingastriccarcinomas(P<0.01,
P<0.05).The
a
index(AI)of
Bcl一2一positiveexpressioninintestinalmetaplasia,epithelialdysplasi—
was
ofstomachandgastriccarcinomasgroups
was
a
lowerthanthatinBcl一2一negativeexpressiongoups(P<0.
051.There
negativecorrelationbetweenAIandBcl一2一positivecellrate.AIofBax—positiveexpression
inintestinalmetaplasia.epithelial
dysplasiaofstomachandgastriccarcinomasgroups
was
a
were
higherthanthatin
Bax—negativeexpression
goups(P<0.05).There
positivecorrelationbetweenAIandBax—positivecell
an
rate.ConclusionTheincreasedAIandtheratioofBcl一2andBaxmightplay
esisofgastriccarcinoma.
搜索“diyifanwen.net”或“第一范文网”即可找到本站免费阅读全部范文。收藏本站方便下次阅读,第一范文网,提供最新外语学习Bcl-2、Bax在胃癌及胃癌前病变中的表达与细胞凋亡的关系全文阅读和word下载服务。
相关推荐: