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1 General aspects (0)   1.1 Epidemiology (3)   1.2 Population genetics (0)   1.3 Pathogenesis (4)   1.4 Quality of life (8)   1.5 Glaucomas as cause of blindness (6)   1.6 Prevention and screening (7) 2 Anatomical structures in glaucoma (0)   2.1 Conjunctiva (4)   2.2 Cornea (14)   2.3 Sclera (10)   2.4 Anterior chamber angle (3)   2.5 Meshwork (0)     2.5.1 Trabecular meshwork (12)     2.5.2 Schlemms canal (4)     2.5.3 Scleral outlet channels (0)   2.6 Aqueous humor dynamics (1)     2.6.1 Production (0)     2.6.2 Outflow (1)       2.6.2.1 Trabecular meshwork (0)       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 (1)   2.10 Lens (1)   2.11 Vitreous body (0)   2.12 Choroid, peripapillary choroid, peripapillary atrophy (6)   2.13 Retina and retinal nerve fibre layer (19)   2.14 Optic disc (19)   2.15 Optic nerve (0)   2.16 Chiasma and retrochiasmal central nervous system (8)   2.17 Stem cells (5)   2.20 Other (0) 3 Laboratory methods (0)   3.1 Microscopy (2)   3.2 Electron microscopy (1)   3.3 Immunohistochemistry (1)   3.4 Molecular genetics (0)     3.4.1 Linkage studies (0)     3.4.2 Gene studies (19)   3.5 Molecular biology incl. SiRNA (20)   3.6 Cellular biology (26)   3.7 Biochemistry (9)   3.8 Pharmacology (9)   3.9 Pathophysiology (10)   3.10 Immunobiology (5)   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 (3)     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 (2)   5.3 Other (11) 6 Clinical examination methods (0)   6.1 Intraocular pressure measurement; factors affecting IOP (0)     6.1.1 Devices, techniques (9)     6.1.2 Fluctuation, circadian rhythms (5)     6.1.3 Factors affecting IOP (8)   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 (1)   6.4 Gonioscopy (1)   6.5 Ophthalmoscopy (0)   6.6 Visual field examination and other visual function tests (0)     6.6.1 Conventional manual (0)     6.6.2 Automated (21)     6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (7)   6.7 Electro-ophthalmodiagnosis (5)   6.8 Photography (0)     6.8.1 Anterior segment (2)     6.8.2 Posterior segment (4)   6.9 Computerized image analysis (0)     6.9.1 Laser scanning (0)       6.9.1.1 Confocal Scanning Laser Ophthalmoscopy (4)       6.9.1.2 Confocal Scanning Laser Polarimetry (2)     6.9.2 Optical coherence tomography (0)       6.9.2.1 Anterior (10)       6.9.2.2 Posterior (38)     6.9.5 Other (5)   6.10 Fluorescein (ICG) angiography (0)     6.10.1 Anterior segment (1)     6.10.2 Posterior segment (0)   6.11 Bloodflow measurements (16)   6.12 Ultrasonography and ultrasound biomicroscopy (2)   6.13 Provocative tests (3)   6.19 Telemedicine (0)   6.20 Progression (12)   6.30 Other (6) 8 Refractive errors in relation to glaucoma (0)   8.1 Myopia (3)   8.2 Hypermetropia (0)   8.3 Contact lenses (0)   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 (4)     9.1.2 Juvenile glaucoma (11)     9.1.3 Syndromes of Axenfeld, Rieger, Peters, aniridia (2)     9.1.4 Other (0)   9.2 Primary open angle glaucomas (0)     9.2.1 Ocular hypertension (4)     9.2.2 Other risk factors for glaucoma (3)     9.2.3 Open angle glaucoma with elevated IOP (0)     9.2.4 Normal pressure glaucoma (6)   9.3 Primary angle closure glaucomas (0)     9.3.1 Acute primary angle closure glaucoma (pupillary block) (5)     9.3.2 Chronic primary angle closure glaucoma (pupillary block) (4)     9.3.3 Plateau iris syndrome (1)     9.3.4 Primary angle closure suspect (0)     9.3.5 Primary angle closure (2)     9.3.10 Other (0)   9.4 Glaucomas associated with other ocular and systemic disorders (0)     9.4.1 Steroid-induced glaucoma (6)     9.4.2 Glaucomas associated with disorders of the cornea, conjunctiva, sclera (0)       9.4.2.1 Iridocorneal endothelial syndrome (ICE, incl. irisatrophy) (2)       9.4.2.2 Posterior polymorphous dystrophy (0)       9.4.2.3 Fuchs' endothelial dystrophy (0)       9.4.2.5 Other (0)     9.4.3 Glaucomas associated with disorders of the iris and ciliary body (0)       9.4.3.1 Pigmentary glaucoma (2)       9.4.3.5 Other (1)     9.4.4 Glaucomas associated with disorders of the lens (0)       9.4.4.1 Exfoliation syndrome (7)       9.4.4.2 Glaucomas associated with cataracts (1)       9.4.4.3 Glaucomas associated with lens dislocation (0)       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 (0)       9.4.5.5 Other (4)     9.4.6 Glaucomas associated with inflammation, uveitis (7)     9.4.7 Glaucomas associated with ocular trauma (3)     9.4.8 Glaucomas associated with intraocular tumors (3)     9.4.9 Glaucomas associated with elevated episcleral venous pressure (0)       9.4.10 Glaucomas associated with hemorrhage (1)     9.4.11 Glaucomas following intraocular surgery (0)       9.4.11.1 Ciliary block (malignant) glaucoma (1)       9.4.11.2 Glaucomas in aphakia and pseudophakia (6)       9.4.11.3 Epithelial, fibrous, and endothelial proliferation (0)       9.4.11.4 Glaucomas associated with corneal surgery (3)       9.4.11.5 Glaucomas associated with vitreoretinal surgery (1)     9.4.15 Glaucoma in relation to systemic disease (20)     9.4.20 Other (5) 10 Differential diagnosis e.g. anterior and posterior ischemic optic neuropathy (4) 11 Medical treatment (0)   11.1 General management, indication (1)   11.2 Cholinergic drugs (3)   11.3 Adrenergic drugs (0)     11.3.1 Epinephrine (0)     11.3.2 Thymoxamine, dapiprazole (0)     11.3.3 Apraclonidine, brimonidine (3)     11.3.4 Betablocker (4)     11.3.5 Other (0)   11.4 Prostaglandins 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    12.8.1 Without tube implant (12)     12.8.2 With tube implant or other drainage devices (28)     12.8.3 Non-perforating (3)     12.8.4 Using laser (0)     12.8.5 Other (10)     12.8.10 Woundhealing antifibrosis (14)     12.8.11 Complications, endophthalmitis (11)   12.9 Trabeculotomy, goniotomy (4)   12.10 Cyclodestruction (3)   12.11 Cyclodialysis (1)   12.12 Cataract extraction (0)     12.12.1 Intracapsular (0)     12.12.2 Extracapsular (0)     12.12.3 Phacoemulsification (5)   12.14 Combined cataract extraction and glaucoma surgery (0)     12.14.1 Intracapsular (0)     12.14.2 Extracapsular (0)     12.14.3 Phacoemulsification (4)   12.15 Capsulotomy (0)   12.16 Vitrectomy (2)   12.17 Anesthesia (0)   12.20 Other (3) 13 Therapeutic prognosis and outcome (0)   13.1 Prognostic factors (0)   13.2 Outcome (0)     13.2.1 IOP (1)     13.2.2 Visual field (0)       13.2.2.1 Progression (0)       13.2.2.2 Improvement (0)     13.2.3 Other (0) 14 Costing studies; pharmacoeconomics (3) 15 Miscellaneous (28)

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Abstract #71521 Published in IGR 18-3

Effect of benzalkonium chloride on trabecular meshwork cells in a new in vitro 3D trabecular meshwork model for glaucoma

Bouchemi M; Roubeix C; Kessal K; Riancho L; Raveu AL; Soualmia H; Baudouin C; Brignole-Baudouin F
Toxicology in Vitro 2017; 41: 21-29

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PURPOSE: To validate a new culture model of primary human trabecular meshwork cells (p-hTMCs) using Matrigel®, in order to mimic in vitro 3D-TM organization, and to investigate the proinflammatory effect of benzalkonium chloride (BAK) in 3D p-hTMC cultures. METHODS: p-hTMCs, seeded onto Matrigel®-coated inserts were stimulated with BAK (10(-4)%), dexamethasone (DEX) (10(-6)M) or transforming growth factor-beta 2 (TGF-β2) (5ng/ml) for 48h and observed with confocal microscopy. The BAK effect at 10(-4)% or 5.10(-3)% on the gene expressions of interleukin-6 (IL-6), interleukin-8 (IL-8) and matrix metalloproteinase (MMP-9) was investigated using qRT-PCR in 2D and 3D p-hTMC cultures. RESULTS: p-hTMCs seeded in Matrigel® were able to organize themselves in a 3D-spatial conformation in the different conditions tested with cross-linked actin network (CLAN) formation in presence of DEX or TGF-β2 and intercellular space contraction with TGF-β2. IL-6 and IL-8 gene expressions increased in presence of BAK in 2D and in 3D p-hTMC cultures. BAK 10(-4)% only showed a tendency to stimulate MMP-9 expression in p-hTMCs after 24h-recovery. CONCLUSIONS: We investigated this new 3D-TM in vitro model in Matrigel(®) matrix for pathophysiological and toxicological purposes. It appears as a new promising tool for a better understanding of TM behavior in physiological and stress conditions, as well as toxicological evaluations of antiglaucoma eyedrops and preservatives.

Research Laboratory LR99ES11, Department of Biochemistry, Rabta Hospital, Tunis, Tunisia. Electronic address: bouchemimeryem@yahoo.fr.

Full article

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Classification:

3.6 Cellular biology (Part of: 3 Laboratory methods)
11.16 Vehicles, delivery systems, pharmacokinetics, formulation (Part of: 11 Medical treatment)
3.5 Molecular biology incl. SiRNA (Part of: 3 Laboratory methods)

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