Tags

Type your tag names separated by a space and hit enter

Strain-specific differences in the effects of cyclosporin A and FK506 on the survival and regeneration of axotomized retinal ganglion cells in adult rats.
Neuroscience. 2007 May 25; 146(3):986-99.N

Abstract

The immune response can influence neuronal viability and plasticity after injury, effects differing in strains of rats with different susceptibility to autoimmune disease. We assessed the effects of i.p. injections of cyclosporin A (CsA) or FK506 on adult retinal ganglion cell (RGC) survival and axonal regeneration into peripheral nerve (PN) autografted onto the cut optic nerve of rats resistant (Fischer F344) or vulnerable (Lewis) to autoimmune disease. Circulating and tissue CsA and FK506 levels were similar in both strains. Three weeks after autologous PN transplantation the number of viable beta-III tubulin-positive RGCs was significantly greater in CsA- and FK506-treated F344 rats compared with saline-injected controls. RGC survival in Lewis rats was not significantly altered. In F344 rats, retrograde labeling of RGCs revealed that CsA or FK506 treatment significantly increased the number of RGCs that regenerated an axon into a PN autograft; however these agents had no beneficial effect on axonal regeneration in Lewis rats. PN grafts in F344 rats also contained comparatively more pan-neurofilament immunoreactive axons. In both strains, 3 weeks after transplantation CsA or FK506 treatment resulted in increased retinal macrophage numbers, but only in F344 rats was this increase significant. At this time-point PN grafts in both strains contained many macrophages and some T cells. T cell numbers in Lewis rats were significantly greater than in F344 animals. The increased RGC axonal regeneration seen in CsA- or FK506-treated F344 but not Lewis rats shows that modulation of immune responses after neurotrauma has complex and not always predictable outcomes.

Authors+Show Affiliations

School of Anatomy and Human Biology, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, Western Australia 6009, Australia. qcui@cuhk.edu.hkNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

17408862

Citation

Cui, Q, et al. "Strain-specific Differences in the Effects of Cyclosporin a and FK506 On the Survival and Regeneration of Axotomized Retinal Ganglion Cells in Adult Rats." Neuroscience, vol. 146, no. 3, 2007, pp. 986-99.
Cui Q, Hodgetts SI, Hu Y, et al. Strain-specific differences in the effects of cyclosporin A and FK506 on the survival and regeneration of axotomized retinal ganglion cells in adult rats. Neuroscience. 2007;146(3):986-99.
Cui, Q., Hodgetts, S. I., Hu, Y., Luo, J. M., & Harvey, A. R. (2007). Strain-specific differences in the effects of cyclosporin A and FK506 on the survival and regeneration of axotomized retinal ganglion cells in adult rats. Neuroscience, 146(3), 986-99.
Cui Q, et al. Strain-specific Differences in the Effects of Cyclosporin a and FK506 On the Survival and Regeneration of Axotomized Retinal Ganglion Cells in Adult Rats. Neuroscience. 2007 May 25;146(3):986-99. PubMed PMID: 17408862.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Strain-specific differences in the effects of cyclosporin A and FK506 on the survival and regeneration of axotomized retinal ganglion cells in adult rats. AU - Cui,Q, AU - Hodgetts,S I, AU - Hu,Y, AU - Luo,J-M, AU - Harvey,A R, Y1 - 2007/04/06/ PY - 2006/09/12/received PY - 2007/01/14/revised PY - 2007/02/14/accepted PY - 2007/4/6/pubmed PY - 2007/7/4/medline PY - 2007/4/6/entrez SP - 986 EP - 99 JF - Neuroscience JO - Neuroscience VL - 146 IS - 3 N2 - The immune response can influence neuronal viability and plasticity after injury, effects differing in strains of rats with different susceptibility to autoimmune disease. We assessed the effects of i.p. injections of cyclosporin A (CsA) or FK506 on adult retinal ganglion cell (RGC) survival and axonal regeneration into peripheral nerve (PN) autografted onto the cut optic nerve of rats resistant (Fischer F344) or vulnerable (Lewis) to autoimmune disease. Circulating and tissue CsA and FK506 levels were similar in both strains. Three weeks after autologous PN transplantation the number of viable beta-III tubulin-positive RGCs was significantly greater in CsA- and FK506-treated F344 rats compared with saline-injected controls. RGC survival in Lewis rats was not significantly altered. In F344 rats, retrograde labeling of RGCs revealed that CsA or FK506 treatment significantly increased the number of RGCs that regenerated an axon into a PN autograft; however these agents had no beneficial effect on axonal regeneration in Lewis rats. PN grafts in F344 rats also contained comparatively more pan-neurofilament immunoreactive axons. In both strains, 3 weeks after transplantation CsA or FK506 treatment resulted in increased retinal macrophage numbers, but only in F344 rats was this increase significant. At this time-point PN grafts in both strains contained many macrophages and some T cells. T cell numbers in Lewis rats were significantly greater than in F344 animals. The increased RGC axonal regeneration seen in CsA- or FK506-treated F344 but not Lewis rats shows that modulation of immune responses after neurotrauma has complex and not always predictable outcomes. SN - 0306-4522 UR - https://www.unboundmedicine.com/medline/citation/17408862/Strain_specific_differences_in_the_effects_of_cyclosporin_A_and_FK506_on_the_survival_and_regeneration_of_axotomized_retinal_ganglion_cells_in_adult_rats_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0306-4522(07)00189-3 DB - PRIME DP - Unbound Medicine ER -