| [Increasing expression of microglia in the retina after optic nerve transection in rats]. | |
| | |
MedLine Citation:
|
PMID: 22336117 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
OBJECTIVE: To investigate the expression of microglia after optic nerve transection in rats. METHOD: Thirty healthy adult female SD rats were randomly grouped to experimental and control groups according to the random number table. The experimental group received an optic nerve transection (ONT) on their right eyes. ONT was performed 1.5 mm from the eye ball. The control group received a surgery on day 5. Rats were killed 7 days after the first operation. Retinal ganglion cells (RGC) were retrograde labeled by placing fluorogold dye on the stump of the optic nerve. Microglia was immunohistochemically stained in the retinas of normal and 7-day injury groups using ionized calcium adaptive molecular 1 (Iba-1) as the marker. The protein levels of Iba-1 in the retinas were also examined using Western blotting. The number of RGCs was quantified using flatmount of retinas in the two groups. RESULTS: There were some resting microglia (Iba-1 positive cells) in the nerve fiber layer and inner plexiform layer in the normal control retina. However, microglia showed a moderately activated morphology with increased Iba-1 immunoreactivity in the stroma and processes up to outer plexiform layer. Western blotting showed that the levels of Iba-1 was lower in the normal retina and increased to 2.3-fold 7 days after injury (t = 7.669, P = 0.001). The number of RGCs after injury was (1182 ± 64) per mm(2), decreased to 51% in the normal groups (t = 23.85, P < 0.0001). CONCLUSIONS: The results implicated that microglia was increased and partially activated after the optic nerve transection. This may be a manifestation of the self-protection mechanism of RGCs against the injury insult. |
| | |
Authors:
|
Qing-Ling Fu; Yu Zhang; Yi-Hua Su; Yue-Qi Sun; Shu-Juan Sun; Jian-Bo Shi |
Publication Detail:
|
Type: English Abstract; Journal Article |
Journal Detail:
|
Title: [Zhonghua yan ke za zhi] Chinese journal of ophthalmology Volume: 47 ISSN: 0412-4081 ISO Abbreviation: Zhonghua Yan Ke Za Zhi Publication Date: 2011 Dec |
Date Detail:
|
Created Date: 2012-02-16 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 16210540R Medline TA: Zhonghua Yan Ke Za Zhi Country: China |
Other Details:
|
Languages: chi Pagination: 1084-8 Citation Subset: IM |
Affiliation:
|
Otorhinolaryngology Hospital, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China. Email: fuqingl@mail.sysu.edu.cn. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: [Mutation analysis in a family of Leber hereditary optic neuropathy].
Next Document: [Role of endothelial progenitor cells in optic nerve injury of rats].