advertisement

---

1 General aspects (0)   1.1 Epidemiology (13)   1.2 Population genetics (1)   1.3 Pathogenesis (2)   1.4 Quality of life (15)   1.5 Glaucomas as cause of blindness (8)   1.6 Prevention and screening (15) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (7)   2.2 Cornea (26)   2.3 Sclera (8)   2.4 Anterior chamber angle (3)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (11)     2.5.2 Schlemms canal (1)     2.5.3 Scleral outlet channels (1)   2.6 Aqueous humor dynamics (0)     2.6.1 Production (0)     2.6.2 Outflow (0)       2.6.2.1 Trabecular meshwork (3)       2.6.2.2 Uveoscleral (0)     2.6.3 Compostion (3)   2.7 Episcleral veins and venous pressure (0)   2.8 Iris (2)   2.9 Ciliary body (0)   2.10 Lens (0)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (8)   2.13 Retina and retinal nerve fibre layer (36)   2.14 Optic disc (29)   2.15 Optic nerve (0)   2.16 Chiasma and retrochiasmal central nervous system (7)   2.17 Stem cells (3)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (1)   3.2 Electron microscopy (0)   3.3 Immunohistochemistry (1)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (0)     3.4.2 Gene studies (22)   3.5 Molecular biology incl. SiRNA (28)   3.6 Cellular biology (35)   3.7 Biochemistry (14)   3.8 Pharmacology (21)   3.9 Pathophysiology (36)   3.10 Immunobiology (8)   3.11 Pharmacogenetics (0)   3.12 Proteomics (2)   3.13 In vivo imaging (0)     3.13.1 Laser Scanning (0)       3.13.1.1 Confocal Scanning Laser Ophthalmoscopy (0)       3.13.1.2 Confocal Scanning Laser Polarimetry (0)     3.13.2 Optical Coherence Tomography (0)       3.13.2.1 Anterior Segment (0)       3.13.2.2 Posterior Segment (0)     3.13.3 RGC Imaging (0)     3.13.4 Other (0)   3.20 Other (0) 4 Tissue culture of ocular cells (0) 5 Experimental glaucoma; animal models (0)   5.1 Rodent (16)   5.2 Primates (0)   5.3 Other (3) 6 Clinical examination methods (0)   6.1 Intraocular pressure measurement; factors affecting IOP (1)     6.1.1 Devices, techniques (13)     6.1.2 Fluctuation, circadian rhythms (9)     6.1.3 Factors affecting IOP (13)   6.2 Tonography, aqueous flow measurement (see also 2.6) (0)   6.3 Biomicroscopy (slitlamp) (0)     6.3.1 Anterior segment (0)     6.3.2 Posterior segment (2)   6.4 Gonioscopy (4)   6.5 Ophthalmoscopy (1)   6.6 Visual field examination and other visual function tests (0)     6.6.1 Conventional manual (0)     6.6.2 Automated (35)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (21)   6.7 Electro-ophthalmodiagnosis (3)   6.8 Photography (0)     6.8.1 Anterior segment (4)     6.8.2 Posterior segment (11)   6.9 Computerized image analysis (0)     6.9.1 Laser scanning (0)       6.9.1.1 Confocal Scanning Laser Ophthalmoscopy (1)       6.9.1.2 Confocal Scanning Laser Polarimetry (0)     6.9.2 Optical coherence tomography (0)       6.9.2.1 Anterior (11)       6.9.2.2 Posterior (76)     6.9.5 Other (19)   6.10 Fluorescein (ICG) angiography (0)     6.10.1 Anterior segment (1)     6.10.2 Posterior segment (0)   6.11 Bloodflow measurements (32)   6.12 Ultrasonography and ultrasound biomicroscopy (3)   6.13 Provocative tests (1)   6.19 Telemedicine (9)   6.20 Progression (28)   6.30 Other (19) 8 Refractive errors in relation to glaucoma (0)   8.1 Myopia (11)   8.2 Hypermetropia (0)   8.3 Contact lenses (4)   8.4 Refractive surgical procedures (0)   8.5 Other (0) 9 Clinical forms of glaucomas (0)   9.1 Developmental glaucomas (0)     9.1.1 Congenital glaucoma, Buphthalmos (19)     9.1.2 Juvenile glaucoma (15)     9.1.3 Syndromes of Axenfeld, Rieger, Peters, aniridia (5)     9.1.4 Other (4)   9.2 Primary open angle glaucomas (0)     9.2.1 Ocular hypertension (0)     9.2.2 Other risk factors for glaucoma (9)     9.2.3 Open angle glaucoma with elevated IOP (1)     9.2.4 Normal pressure glaucoma (18)   9.3 Primary angle closure glaucomas (0)     9.3.1 Acute primary angle closure glaucoma (pupillary block) (14)     9.3.2 Chronic primary angle closure glaucoma (pupillary block) (19)     9.3.3 Plateau iris syndrome (0)     9.3.4 Primary angle closure suspect (1)     9.3.5 Primary angle closure (4)     9.3.10 Other (0)   9.4 Glaucomas associated with other ocular and systemic disorders (0)     9.4.1 Steroid-induced glaucoma (8)     9.4.2 Glaucomas associated with disorders of the cornea, conjunctiva, sclera (0)       9.4.2.1 Iridocorneal endothelial syndrome (ICE, incl. irisatrophy) (3)       9.4.2.2 Posterior polymorphous dystrophy (0)       9.4.2.3 Fuchs' endothelial dystrophy (0)       9.4.2.5 Other (1)     9.4.3 Glaucomas associated with disorders of the iris and ciliary body (0)       9.4.3.1 Pigmentary glaucoma (1)       9.4.3.5 Other (1)     9.4.4 Glaucomas associated with disorders of the lens (0)       9.4.4.1 Exfoliation syndrome (21)       9.4.4.2 Glaucomas associated with cataracts (3)       9.4.4.3 Glaucomas associated with lens dislocation (2)       9.4.4.5 Other (3)     9.4.5 Glaucomas associated with disorders of the retina, choroid and vitreous (0)       9.4.5.1 Neovascular glaucoma (11)       9.4.5.5 Other (8)     9.4.6 Glaucomas associated with inflammation, uveitis (11)     9.4.7 Glaucomas associated with ocular trauma (3)     9.4.8 Glaucomas associated with intraocular tumors (0)     9.4.9 Glaucomas associated with elevated episcleral venous pressure (0)       9.4.10 Glaucomas associated with hemorrhage (4)     9.4.11 Glaucomas following intraocular surgery (0)       9.4.11.1 Ciliary block (malignant) glaucoma (2)       9.4.11.2 Glaucomas in aphakia and pseudophakia (9)       9.4.11.3 Epithelial, fibrous, and endothelial proliferation (0)       9.4.11.4 Glaucomas associated with corneal surgery (6)       9.4.11.5 Glaucomas associated with vitreoretinal surgery (3)     9.4.15 Glaucoma in relation to systemic disease (40)     9.4.20 Other (2) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (6) 11 Medical treatment (0)   11.1 General management, indication (7)   11.2 Cholinergic drugs (2)   11.3 Adrenergic drugs (0)     11.3.1 Epinephrine (0)     11.3.2 Thymoxamine, dapiprazole (0)     11.3.3 Apraclonidine, brimonidine (2)     11.3.4 Betablocker (2)     11.3.5 Other (1)   11.4 Prostaglandins (4)   11.5 Carbonic anhydrase inhibitors (0)     11.5.1 Systemic (0)     11.5.2 Topical (0)   11.6 Osmotic treatment (0)   11.7 Treatment of bloodflow (0)   11.8 Neuroprotection (19)   11.9 Gene therapy (4)   11.13 Combination therapy (0)     11.13.1 Betablocker and pilocarpine (0)     11.13.2 Betablocker and carbon anhydrase inhibitor (1)     11.13.3 Betablocker and brimonidine (2)     11.13.4 Betablocker and prostaglandin (1)     11.13.5 Other (1)   11.14 Investigational drugs; pharmacological experiments (21)   11.15 Other drugs in relation to glaucoma (10)   11.16 Vehicles, delivery systems, pharmacokinetics, formulation (17)   11.17 Cooperation with medical therapy e.g. persistency, compliance, adherence (12)   11.20 Other (1) 12 Surgical treatment (0)   12.1 General management, indication (8)   12.2 Laser iridotomy (3)   12.3 Laser iridoplasty (2)   12.4 Laser trabeculoplasty and other laser treatment of the angle (15)   12.7 Surgical iridectomy (1)   12.8 Filtering surgery (0)     12.8.1 Without tube implant (29)     12.8.2 With tube implant or other drainage devices (78)     12.8.3 Non-perforating (8)     12.8.4 Using laser (0)     12.8.5 Other (8)     12.8.10 Woundhealing antifibrosis (15)     12.8.11 Complications, endophthalmitis (17)   12.9 Trabeculotomy, goniotomy (27)   12.10 Cyclodestruction (17)   12.11 Cyclodialysis (1)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (14)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (22)   12.15 Capsulotomy (0)   12.16 Vitrectomy (8)   12.17 Anesthesia (3)   12.20 Other (1) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (1)   13.2 Outcome (0)     13.2.1 IOP (0)     13.2.2 Visual field (0)       13.2.2.1 Progression (0)       13.2.2.2 Improvement (1)     13.2.3 Other (0) 14 Costing studies; pharmacoeconomics (10) 15 Miscellaneous (32)

---

Abstract #92295 Published in IGR 22-1

Melatonin Prevents Non-image-Forming Visual System Alterations Induced by Experimental Glaucoma in Rats

González Fleitas MF; Devouassoux J; Aranda ML; Dieguez HH; Calanni JS; Iaquinandi A; Sande PH; Dorfman D; Rosenstein RE
Molecular Neurobiology 2021; 58: 3653-3664

---

Glaucoma is a blindness-causing disease that involves selective damage to retinal ganglion cells (RGCs) and their axons. A subset of RGCs expressing the photopigment melanopsin regulates non-image-forming visual system functions, such as pupillary light reflex and circadian rhythms. We analyzed the effect of melatonin on the non-image-forming visual system alterations induced by experimental glaucoma. For this purpose, male Wistar rats were weekly injected with vehicle or chondroitin sulfate into the eye anterior chamber. The non-image-forming visual system was analyzed in terms of (1) melanopsin-expressing RGC number, (2) anterograde transport from the retina to the olivary pretectal nucleus and the suprachiasmatic nuclei, (3) blue- and white light-induced pupillary light reflex, (4) light-induced c-Fos expression in the suprachiasmatic nuclei, (5) daily rhythm of locomotor activity, and (6) mitochondria in melanopsin-expressing RGC cells. Melatonin prevented the effect of experimental glaucoma on melanopsin-expressing RGC number, blue- and white light-induced pupil constriction, retina-olivary pretectal nucleus, and retina- suprachiasmatic nuclei communication, light-induced c-Fos expression in the suprachiasmatic nuclei, and alterations in the locomotor activity daily rhythm. In addition, melatonin prevented the effect of glaucoma on melanopsin-expressing RGC mitochondrial alterations. These results support that melatonin protected the non-image-forming visual system against glaucoma, probably through a mitochondrial protective mechanism.

Laboratory of Retinal Neurochemistry and Experimental Ophthalmology, Department of Human Biochemistry, School of Medicine/CEFyBO, University of Buenos Aires/CONICET, Paraguay 2155, 5P, (1121), Buenos Aires, Argentina.

Full article

---

Classification:

5.1 Rodent (Part of: 5 Experimental glaucoma; animal models)
3.8 Pharmacology (Part of: 3 Laboratory methods)
11.8 Neuroprotection (Part of: 11 Medical treatment)

---

• ← Previous
• Next →

---