PMID- 24942931 OWN - NLM STAT- MEDLINE DCOM- 20140925 LR - 20220310 IS - 0006-3002 (Print) IS - 0006-3002 (Linking) VI - 1842 IP - 9 DP - 2014 Sep TI - BDNF impairment is associated with age-related changes in the inner retina and exacerbates experimental glaucoma. PG - 1567-78 LID - S0925-4439(14)00154-9 [pii] LID - 10.1016/j.bbadis.2014.05.026 [doi] AB - Brain-derived neurotrophic factor (BDNF) stimulation of its high-affinity receptor TrkB results in activation of pro-survival cell-signalling pathways that can afford neuroprotection to the retina. Reduction in retrograde axonal transport of neurotrophic factors such as BDNF from the brain to the neuronal cell bodies in the retina has been suggested as a critical factor underlying progressive and selective degeneration of ganglion cell layer and optic nerve in glaucoma. We investigated the role of BDNF in preserving inner retinal homeostasis in normal and glaucoma states using BDNF(+/-) mice and compared it with wild type controls. This study demonstrated that BDNF(+/-) animals were more susceptible to functional, morphological and molecular degenerative changes in the inner retina caused by age as well as upon exposure to experimental glaucoma caused by increased intraocular pressure. Glaucoma induced a down regulation of BDNF/TrkB signalling and an increase in levels of neurotoxic amyloid beta 1-42 in the optic nerve head which were exacerbated in BDNF(+/-) mice. Similar results were obtained upon analysing the human optic nerve head tissues. Our data highlighted the role of BDNF in maintaining the inner retinal integrity under normal conditions and the detrimental effects of its insufficiency on the retina and optic nerve in glaucoma. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Gupta, Vivek AU - Gupta V AD - Australian School of Advanced Medicine, Macquarie University, Australia. Electronic address: vivek.gupta@mq.edu.au. FAU - You, Yuyi AU - You Y AD - Australian School of Advanced Medicine, Macquarie University, Australia. FAU - Li, Jonathan AU - Li J AD - Australian School of Advanced Medicine, Macquarie University, Australia. FAU - Gupta, Veer AU - Gupta V AD - School of Medical Sciences, Edith Cowan University, Perth, Australia. FAU - Golzan, Mojtaba AU - Golzan M AD - Australian School of Advanced Medicine, Macquarie University, Australia. FAU - Klistorner, Alexander AU - Klistorner A AD - Australian School of Advanced Medicine, Macquarie University, Australia; Save Sight Institute, Sydney University, Australia. FAU - van den Buuse, Maarten AU - van den Buuse M AD - Behavioural Neuroscience Laboratory, Florey Institute for Neuroscience and Mental Health, Melbourne, Australia; Department of Pharmacology, University of Melbourne, Australia; School of Psychological Science, La Trobe University, Melbourne, Australia. FAU - Graham, Stuart AU - Graham S AD - Australian School of Advanced Medicine, Macquarie University, Australia; Save Sight Institute, Sydney University, Australia. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140602 PL - Netherlands TA - Biochim Biophys Acta JT - Biochimica et biophysica acta JID - 0217513 RN - 0 (Amyloid beta-Peptides) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Peptide Fragments) RN - 0 (amyloid beta-protein (1-42)) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Age Factors MH - Aged MH - Aged, 80 and over MH - Amyloid beta-Peptides/*metabolism MH - Animals MH - Autopsy MH - Axonal Transport MH - Blotting, Western MH - Brain-Derived Neurotrophic Factor/*physiology MH - Case-Control Studies MH - *Disease Models, Animal MH - Electroretinography MH - Enzyme-Linked Immunosorbent Assay MH - Glaucoma/etiology/metabolism/*pathology MH - Humans MH - Immunoenzyme Techniques MH - Mice MH - Mice, Knockout MH - Optic Nerve/metabolism/*pathology MH - Peptide Fragments/*metabolism MH - Receptor, trkB/metabolism MH - Retina/metabolism/*pathology MH - Retinal Ganglion Cells/metabolism/*pathology MH - Signal Transduction OTO - NOTNLM OT - Amyloid beta OT - Brain-derived neurotrophic factor OT - Ganglion cell layer OT - Glaucoma OT - Signal transduction OT - TrkB receptor EDAT- 2014/06/20 06:00 MHDA- 2014/09/26 06:00 CRDT- 2014/06/20 06:00 PHST- 2014/04/03 00:00 [received] PHST- 2014/05/21 00:00 [revised] PHST- 2014/05/27 00:00 [accepted] PHST- 2014/06/20 06:00 [entrez] PHST- 2014/06/20 06:00 [pubmed] PHST- 2014/09/26 06:00 [medline] AID - S0925-4439(14)00154-9 [pii] AID - 10.1016/j.bbadis.2014.05.026 [doi] PST - ppublish SO - Biochim Biophys Acta. 2014 Sep;1842(9):1567-78. doi: 10.1016/j.bbadis.2014.05.026. Epub 2014 Jun 2.