河北医科大学学报

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透镜诱导豚鼠近视眼超微结构的观察

  

  1. 1.河北医科大学第一医院眼科,河北 石家庄 050031;2.中国人民解放军白求恩国际和平医院眼科,河北 石家庄 050082
  • 出版日期:2016-03-25 发布日期:2016-05-11
  • 作者简介:张新( 1978- ),女,河北衡水人,河北医科大学第一 医院主治医师,医学硕士,从事眼科疾病诊治研究。

Observation on ultrastructure of lensinduced myopia in guinea pig#br#

  1. 1. Department of Ophthalmology, the First Hospital of Hebei Medical University,
    Shijiazhuang 050031, China; 2.Department of Ophthalmology, the Bethune
    International Peace Hospital, Shijiazhuang 050082, China
  • Online:2016-03-25 Published:2016-05-11

摘要: [摘要] 目的 观察豚鼠实验性近视眼组织超微结构的改变,探索近视发病机制。方法 选用出生后 2 周龄的
豚鼠 39 只,随机分为 A 、 B 、 C3 组,每组 13 只,选取任意一眼戴 -10.
00DS 凹透镜,分别于 10 、 30 、 50d 后去除镜片,
验光,测眼球长度,摘除眼球行光镜电镜检查。结果 诱导后实验眼和对照眼均出现近视,眼轴增长,与诱导前比较
差异有统计学意义( P <0.05 );且随时间延长,眼屈光度、眼轴变化越严重(
P <0.05 )。实验眼眼屈光度低于对照
眼,眼轴长于对照眼( P <0.05 )。实验眼 3 组间巩膜厚度比较差异有统计学意义(
P <0.05 ), C 组巩膜厚度较 A 组
薄( P <0.05 )。 C 组实验眼巩膜厚度较对照眼薄(
P <0.05 )。 A 组巩膜胶原纤维排列稍紊乱。 B 组巩膜胶原纤维
排列稍紊乱、粗细不均、间隙变大。 C 组巩膜胶原纤维排列紊乱、粗细不均、间隙变大,胶原纤维板层结构不清,局部
纤维母细胞增生。 C 组视网膜外核层细胞核变小、变圆,排列不均,视细胞层外节、内节排列紊乱。结论 豚鼠可作为
研究实验性近视的一种经济有效的哺乳类模型动物。实验性近视眼的巩膜、视网膜均发生了一系列的退行性改变。

关键词: 近视, 透镜, 超微结构, 豚鼠

Abstract: [ Abstract ] Objective Tostudytheultrastructurechangesofmyopiainducedbylens-induced
methodandtoexploreitspathologicalmechanism.Methods Thirty-nineguineapigswithtwo
weeksoldwererandomlydividedintothreegroups : groupA , groupBandgroupC , withthirteen
ratsineachgroup.Aeyewasrandomlyselectedtowear-10.00DSconcavelens , whichwas
removedafterculturingfor10days , 30daysand50daysingroupA , groupBandgroupC ,
respectively.Two-week-oldguineapigswerelens-inducedmonocularly.Atday10 , day30andday
50 , thelenswereremovedrespectively.After measurementofreferactionandaxiallength ,
eyeballswereremovedandtheeyeswereobservedbylightandelectronmicroscope.Results
Aftertheexperiment , theexprerimentaleyesandthecontroleyeswereinduced myopia , the
growthoftheeyeaxis , thedifferencewasstatisticallysignificant ( P <0.05 ) .Andwiththetime
prolonged , themoreseveretheeyes , themoreserioustheaxiallength (
P <0.05 ) .Therefractive
degreeoftheexperimentaleyewaslowerthanthatofthecontrol , andtheaxiallengthwaslonger
thanthatofthecontroleye ( P <0.05 ) .Thereweresignificantdifferencesamongthe3groupsin
thescleralthickness ( P <0.05 ) .ThethicknessofgroupCwasthinnerthanthatofgroupA ( P <
0.05 ) .Comparedwiththecontroleyes , thescleralthicknessingroupCwasthinnerthanthatin
controlgroup ( P <0.05 ) .Thecollagenfibersinthegroup A wereslightlydisordered.The arrangementofcollagenfibersingroupBwereslightlydisordered , thicknesswasuneven , and
gapsbecamelarger.IngroupC , thedisorderofcollagenfibersanduneventhicknessofthe
collagenfiberswereincreased , andthestructureofcollagenfiberswasnotclear.IngroupC , the
outernuclearlayeroftheretinabecamesmallerandround , andarrangementwasdisordered.
Conclusion Theguineapigcanbeusedasaneffectiveandeconomicalmanmmalmodelin
experimental myopia study.The degenerations were occurredin sclera and retinain the
experimentalmodels.