小鼠前脑缺血灌注损伤模型海马CA1区的形态学观察
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area
in mice with
experimental model for evaluating the effect of remedy for
after cerebral ischemia.reperfusion.
were randomly divided into six groups:sham operation
min后静推甘露醇。实验小鼠再灌注24 h后取脑,固定切片,HE染色,对照观察海马 CAl区细胞损伤程度,筛选脑缺血再灌注损伤形成变性神经元的合适缺血时间,为选取 合适的实验平台提供依据;观察缺血后脱水治疗对变性神经元形态的影响,评价模型用于 缺血再灌注后干预实验的可用性。 结果:两动脉阻断法建立小鼠前脑缺血再灌注损伤模型,再灌注时间定为24h,随缺
Methods:Sixty mice
group(A),
ischemia for 30 min(B),60 min(C),90 min(D),120 min(E)groups,mannitol treated group
(F).Mannitol
treated group was immediately
no
difference between group F and A(P average>0.05).
neurons
Compared with group A,the
C,D
denatured
rates of
hippocampal CAl
F is less
area
in groups B, average<
山西医科人学硕士学位论文
小鼠前脑缺血再灌注损伤模型海马CAl区的形态学观察
摘要
目的:探索以变性神经元为观察对象,适用于脑缺血再灌注后干预实验的动物模型。 方法:60只小鼠随机分为6组:假手术组(A组),缺血30
120 min、60 min、90 min、
min组(分别为B、C、D、E组)和甘露醇干预组(F组)。甘露醇干预组在缺血120
injured neurons in
group C Was in balance.
Conclusions:1.The mouse model of 60 min ischemia convenient in making and nice in reproducibility and
neurons carl
and
E were
higher(P average<0.05).Similarly,Group
no
than group E(P
0.05)・There was
significant differenceb来自tweengroup A
and F(P
average>0.05).The
proportion of diverse
————————~——~一——
Morphological
observation of hippocampal CAI forebrain ischemia reperfusion Abstraet Objective:To establish
denatured
neurons a
坐堕堕型叁堂墅:兰兰丝堡塞
血时间延长(0~120min),海马CAl区细胞变性、坏死程度加重,存活细胞逐渐减少,
缺血后甘露醇静推,可明显改善缺血再灌注所致的损伤程度。海马CAl区存活细胞数在
C、D、E组均明显低于A组(P<0.01),而F组和E比较差别有统计学意义(P<0.01),
F组和A组比较无明显差别(P>0.05);变性细胞率在A组、B组、C组、D组逐渐升高, 在E组由于细胞坏死严重导致变性细胞比例减少,B组、C组、D组、E组和A组比较差
were compared between 6 groups after 24 h
reper飚ion.
aS can
Results:Reperfusion time invariable,the cell was
inj ured more
and more seriouslv
ischemia time prolongs from obstructed
别有统计学意义(P<0.05),F组和E比较差别有统计学意义(P<0.05),F组和A组比
较无明显差别(P>0.05)。其中C组海马CAl区不同程度受损细胞比例较均衡。 结论:1、小鼠前脑缺血60 min再灌注24 h模型,成本低廉,简便易成,成功率高, 重复性好,能够提供脑缺血再灌注后变性神经元的集中观察区域。2、模型可以用来评价 各种脑缺血再灌注后干预措施的优劣。3、文章采用HE染色还有一定局限性,只能对细 胞形态作出初步评价,后续可以采用更先进的手段,如共聚焦显微镜、免疫组化检测等等, 对细胞功能状态进行评价,进一步完善对模型的研究。4、对模型再灌注时间超过24 h的 形态学改变有待去努力研究。 关键词:脑缺血,再灌注损伤,海马CAl区,变性神经元
and
24 h reperfusion is low cost.
a
provid
region in where denatIH.ed
exist intensively.2.The model
Can
be used to evaluate the remedies f-or denanlred
or
zero
to 1 20
min.Cerebral
ischemia.reperfusion injury
be
healed by
injecting mannit01.Compared with group A,the number
of living cell
in groups C,D,E were obviously less(P average<0.0 1).Group F was higher than group E(P average<0.0 1),but there Was
inj ected
mannitol after 1 20 min ischemia.To
or
decide suitable ischemia time and whether the model would be feasible changes of hippocampal CA 1
area
not,morphological