Oftalmol Zh.2014;3:89-93
https://doi.org/10.31288/oftalmolzh201438993
Ultrastructural changes of optic nerve in experimental model of eye contusion in rabbits
N. E. Dumbrova, T. A. Krasnovid, V. V. Vit, N. I. Molchanuk, N. P. Grubnik
State Institution The Filatov Institute of Eye Diseases and Tissue Therapy of the NAMS of Ukraine, Odessa, (Ukraine)
Key words: optic nerve, contusion of the eyeball, ultrastructural changes
Introduction: Direct and indirect injuries can lead to decrease of visual acuity in the eye or head traumas.
Purpose: To study ultrastructure of the optic nerve of rabbits after experimental mild contusion.
Material and methods: We examined 20 eyes. Electron microscopy of the op¬tic nerve was made after experimental mild eye contusion in 1 week, 1 month, 2 months.
Results: Postcontusional disorders were found in neurofilaments, neurotubules, axonal mitochondria.
Conclusion: Early and first ultrastructural changes of the optic nerve were found in experimental mild eye contusion in 1 week, 1 month, 2 months. The main disor¬ders were found in neurofilaments, neurotubules, axonal mitochondria
References
1.Vit VV. The structure of the human visual system. Odessa:Astroprint; 2010. 664 p.
2.Gundorova RA, Neroev VV, Kashnikov VV. Traumas of the eye. Moscow; 2009. 383- 9.
3.Dumbrova NE, Vit VV, Krasnovid TA, Molchanyuk NI, Grubnik NP. Ultrastructural changes of chorioretinal com¬plex in experimental model of eye contusion in rabbits. Oftalmol Zh. 2013; 5: 67- 72. Russian.
Crossref
4.Norman HJ. Chronicles of WHO. 1985;39(3):3-9.
5.Barron MJ et al. The distributions of mitochondria and sodium channels reflect the specific energy requirements and conduction properties of the human optic nerve head. Br J Ophthalmol. 2004;88(2):286-90.
Crossref
6.Berkelaar M et al. Axotomy results in delayed death and apoptosis of retinal ganglion cells in adult rats. J Neuro-sci.1994;14(7):4368- 74.
Crossref
7.Chada SR, Hollenbeck PJ. Mitochondrial movement and positioning in axons: the role of growth factor signaling. J Exp Biol. 2003;206(Part 12):1985- 92.
Crossref
8.Chierzi S, Strettoi E, Cenni MC, Maffei L. Optic nerve crush: axonal responses in wild-type and bcl-2 transgenic mice. J Neurosci.1999;19(19):8367-76.
Crossref
9.Deng QQ, Liu JH. Neurofilament and optic neuropathy. Zhongguo Shiyong Yanke Zazhi. 2006;24(7):670- 2.
10.Duvdevani R et al. Graded crush of the rat optic nerve as a brain injury model: combining electrophysiological and behavioral outcome. Rest. Neurol. Neurosci. 1990;2:31-8.
11.Garcia-Valenzuela E, Gorczyca W, Darzynkiewicz Z, Sharma SC. Apoptosis in adult retinal ganglion cells after axotomy. J Neurobiol. 1994;25(4):431-8.
Crossref
12.Gellrich NC, Schimming R, Zerfowski M, Eysel UT. Quan-tification of histological changes after calibrated crush of the intraorbital optic nerve in rats. Br J Ophthalmol.2002;86(2):233-7.
Crossref
13.Johoaon JE et al. Brain derived neurotrophic factor supports the survival of cultured retinal ganglion cells. J Neurosci. 1986;6: 3031-8.
14.Ke J et al. Changes in morphology of retinal gangliocytes and GFAP expression after optic nerve contusion in rats. Huazhong Keji Daxue Xuebao: Yixue Ban.2007;36:370- 3.
15.Kristian T, Siesjo BK. Calcium-related damage in ischemia.Life Sci. 1996;59: 357- 67.
16.Kroemer G. The proto-oncogene Bcl-2 and its role in regulating apoptosis. Nat Med.1997;3:614-20.
17.Levkovitch-Verbin H. Animal models of optic nerve diseases.Eye. 2004;18:1066- 74.
18.Levkovitch-Verbin H. RGC death in mice after optic nerve crush injury: oxidative stress and neuroprotection. Invest Ophthalmol Vis Sci.2000;41(13):4169- 74.
19.Li SN et al. Effect of retinal argon laser photocoagulation on the axoplasmic transport and ultrastructure of the optic nerve in rabbit. Zhongguo Jiguang Yixue Zazhi. 2001;10:137-40.
20.Morgan JE. Circulation and axonal transport in the optic nerve.Eye. 2004;18:1089- 95.
21.Morris RL, Hollenbeck PJ. The regulation of bidirectional mitochondrial transport is coordinated with axonal outgrowth.J Cell Sci.1993;104(3);917-27.
22.Sadun AA. Mitochondrial optic neuropathies. J Neurol Neurosurg Psychiatry.2002;72:423- 5.
23.Sarkies N. Traumatic optic neuropathy. Eye.2004;18:1122-5.
24.Solomon AS. Complete transection of rat optic nerve while sparing the meninges and the vasculature: an experimental model for optic nerve neuropathy and trauma. J Neurosci Methods.1996;70(1):21-5.
25.Villegas-Perez MP et al. Rapid and protracted phases of retinal ganglion cell loss follow axotomy in the optic nerve of adult rats. J Neurobiol 1993;24(1):23- 36.
26.Wilkins A, Chandran S, Compston A. A role for oligoden-drocyte-derived IGF-1 in trophic support of cortical neu¬rons. Glia.2001;36:48-57.
27.Wilkins A. Oligodendrocytes promote neuronal survival and axonal length by distinct intracellular mechanisms: a novel role for oligodendrocyte-derived glial cell line-de¬rived neurotrophic factor. J Neurosci. 2003;23:4967- 74.
28.Yang T. Diffuse axonal injury. Jilin Yixue. 2005;26(5):545- 8.
29.Yoles E, Wheeler LA, Schwartz M. Alpha2-adrenoreceptor agonists are neuroprotective in a rat model of optic nerve degeneration. Invest Ophthalmol Vis Sci.1999;40 (1):65-73.