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Prolongation of activity of single intravitreal bevacizumab by adjuvant topical aqueous depressant (Timolol-Dorzolamide)

Background To evaluate the efficacy of timolol-dorzolamide drops used to decrease aqueous outflow from the eye on the prolongation of the biological activity of intravitreal bevacizumab. Methods Thirty-eight eyes of 38 patients with macular edema (ME) following retinal vein obstruction (RVO) were en...

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Published in:Graefe's archive for clinical and experimental ophthalmology 2009, Vol.247 (1), p.35-42
Main Authors: Byeon, Suk Ho, Kwon, Oh W., Song, Ji Hun, Kim, Sung Eun, Park, Yong Sik
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description Background To evaluate the efficacy of timolol-dorzolamide drops used to decrease aqueous outflow from the eye on the prolongation of the biological activity of intravitreal bevacizumab. Methods Thirty-eight eyes of 38 patients with macular edema (ME) following retinal vein obstruction (RVO) were enrolled. These patients were randomly assigned into 2 groups: timolol-dorzolamide drops twice daily (n = 19) or no eyedrops (control; n = 19). All patients received 1.25 mg (in 0.05 mL) of bevacizumab intravitreally and were examined before treatment, 1 week after injection, and then every 4 weeks after injection. For each patient, visual acuity (VA), intraocular pressure (IOP), and central retinal thickness (CRT) by optical coherence tomography (OCT) were recorded before injection and at each visit after injection. The mean CRT at each timepoint was considered to directly reflect the biological activities of bevacizumab at those times. Results The mean CRT measured by OCT showed a significant decrease 1 week after treatment in both groups, and this difference was maintained for a total of 9 weeks (paired t-test,
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Methods Thirty-eight eyes of 38 patients with macular edema (ME) following retinal vein obstruction (RVO) were enrolled. These patients were randomly assigned into 2 groups: timolol-dorzolamide drops twice daily (n = 19) or no eyedrops (control; n = 19). All patients received 1.25 mg (in 0.05 mL) of bevacizumab intravitreally and were examined before treatment, 1 week after injection, and then every 4 weeks after injection. For each patient, visual acuity (VA), intraocular pressure (IOP), and central retinal thickness (CRT) by optical coherence tomography (OCT) were recorded before injection and at each visit after injection. The mean CRT at each timepoint was considered to directly reflect the biological activities of bevacizumab at those times. Results The mean CRT measured by OCT showed a significant decrease 1 week after treatment in both groups, and this difference was maintained for a total of 9 weeks (paired t-test, &lt;0.001). The mean CRT at 1 week post-injection showed no significant between-group difference (p = 0.781). At 5 weeks post-injection, the timolol-dorzolamide group showed a significantly smaller mean CRT than the control group (p = 0.032). The difference in mean CRT between the 2 groups disappeared, however, at 9 weeks post-injection (p = 0.462). In both groups, VA improved significantly 1 week after injection, and these changes were maintained to 9 weeks post-injection in both groups. The mean VA of the 2 groups showed no difference at any time. Conclusions Timolol-dorzolamide aqueous depressant drops may delay the elimination of intravitreal bevacizumab but clinical efficacy of the eyedrops have not been proven in this study.</description><identifier>ISSN: 0721-832X</identifier><identifier>EISSN: 1435-702X</identifier><identifier>DOI: 10.1007/s00417-008-0917-1</identifier><identifier>PMID: 18682969</identifier><language>eng</language><publisher>Berlin/Heidelberg: Springer-Verlag</publisher><subject><![CDATA[Administration, Topical ; Adult ; Aged ; Aged, 80 and over ; Angiogenesis Inhibitors - administration & dosage ; Angiogenesis Inhibitors - adverse effects ; Antibodies, Monoclonal - administration & dosage ; Antibodies, Monoclonal - adverse effects ; Antibodies, Monoclonal, Humanized ; Antihypertensive Agents - administration & dosage ; Antihypertensive Agents - adverse effects ; Aqueous Humor - physiology ; Bevacizumab ; Diabetic Retinopathy - complications ; Diabetic Retinopathy - drug therapy ; Diabetic Retinopathy - pathology ; Drug Synergism ; Drug Therapy, Combination ; Female ; Humans ; Injections ; Intraocular Pressure - drug effects ; Macular Edema - drug therapy ; Macular Edema - etiology ; Macular Edema - pathology ; Male ; Medicine ; Medicine & Public Health ; Middle Aged ; Ophthalmology ; Retinal Disorders ; Retinal Vein Occlusion - complications ; Retinal Vein Occlusion - drug therapy ; Retinal Vein Occlusion - pathology ; Sulfonamides - administration & dosage ; Sulfonamides - adverse effects ; Thiophenes - administration & dosage ; Thiophenes - adverse effects ; Timolol - administration & dosage ; Timolol - adverse effects ; Treatment Outcome ; Visual Acuity - drug effects ; Vitreous Body]]></subject><ispartof>Graefe's archive for clinical and experimental ophthalmology, 2009, Vol.247 (1), p.35-42</ispartof><rights>Springer-Verlag 2008</rights><rights>Springer-Verlag 2009</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c369t-9622e611f8e1cce32dba9382be526195b7b54f5efb4de2064cecbdccae1e31003</citedby><cites>FETCH-LOGICAL-c369t-9622e611f8e1cce32dba9382be526195b7b54f5efb4de2064cecbdccae1e31003</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18682969$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Byeon, Suk Ho</creatorcontrib><creatorcontrib>Kwon, Oh W.</creatorcontrib><creatorcontrib>Song, Ji Hun</creatorcontrib><creatorcontrib>Kim, Sung Eun</creatorcontrib><creatorcontrib>Park, Yong Sik</creatorcontrib><title>Prolongation of activity of single intravitreal bevacizumab by adjuvant topical aqueous depressant (Timolol-Dorzolamide)</title><title>Graefe's archive for clinical and experimental ophthalmology</title><addtitle>Graefes Arch Clin Exp Ophthalmol</addtitle><addtitle>Graefes Arch Clin Exp Ophthalmol</addtitle><description>Background To evaluate the efficacy of timolol-dorzolamide drops used to decrease aqueous outflow from the eye on the prolongation of the biological activity of intravitreal bevacizumab. Methods Thirty-eight eyes of 38 patients with macular edema (ME) following retinal vein obstruction (RVO) were enrolled. These patients were randomly assigned into 2 groups: timolol-dorzolamide drops twice daily (n = 19) or no eyedrops (control; n = 19). All patients received 1.25 mg (in 0.05 mL) of bevacizumab intravitreally and were examined before treatment, 1 week after injection, and then every 4 weeks after injection. For each patient, visual acuity (VA), intraocular pressure (IOP), and central retinal thickness (CRT) by optical coherence tomography (OCT) were recorded before injection and at each visit after injection. The mean CRT at each timepoint was considered to directly reflect the biological activities of bevacizumab at those times. Results The mean CRT measured by OCT showed a significant decrease 1 week after treatment in both groups, and this difference was maintained for a total of 9 weeks (paired t-test, &lt;0.001). The mean CRT at 1 week post-injection showed no significant between-group difference (p = 0.781). At 5 weeks post-injection, the timolol-dorzolamide group showed a significantly smaller mean CRT than the control group (p = 0.032). The difference in mean CRT between the 2 groups disappeared, however, at 9 weeks post-injection (p = 0.462). In both groups, VA improved significantly 1 week after injection, and these changes were maintained to 9 weeks post-injection in both groups. The mean VA of the 2 groups showed no difference at any time. 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Public Health</topic><topic>Middle Aged</topic><topic>Ophthalmology</topic><topic>Retinal Disorders</topic><topic>Retinal Vein Occlusion - complications</topic><topic>Retinal Vein Occlusion - drug therapy</topic><topic>Retinal Vein Occlusion - pathology</topic><topic>Sulfonamides - administration &amp; dosage</topic><topic>Sulfonamides - adverse effects</topic><topic>Thiophenes - administration &amp; dosage</topic><topic>Thiophenes - adverse effects</topic><topic>Timolol - administration &amp; dosage</topic><topic>Timolol - adverse effects</topic><topic>Treatment Outcome</topic><topic>Visual Acuity - drug effects</topic><topic>Vitreous Body</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Byeon, Suk Ho</creatorcontrib><creatorcontrib>Kwon, Oh W.</creatorcontrib><creatorcontrib>Song, Ji Hun</creatorcontrib><creatorcontrib>Kim, Sung Eun</creatorcontrib><creatorcontrib>Park, Yong Sik</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Neurosciences Abstracts</collection><collection>Health &amp; 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Methods Thirty-eight eyes of 38 patients with macular edema (ME) following retinal vein obstruction (RVO) were enrolled. These patients were randomly assigned into 2 groups: timolol-dorzolamide drops twice daily (n = 19) or no eyedrops (control; n = 19). All patients received 1.25 mg (in 0.05 mL) of bevacizumab intravitreally and were examined before treatment, 1 week after injection, and then every 4 weeks after injection. For each patient, visual acuity (VA), intraocular pressure (IOP), and central retinal thickness (CRT) by optical coherence tomography (OCT) were recorded before injection and at each visit after injection. The mean CRT at each timepoint was considered to directly reflect the biological activities of bevacizumab at those times. Results The mean CRT measured by OCT showed a significant decrease 1 week after treatment in both groups, and this difference was maintained for a total of 9 weeks (paired t-test, &lt;0.001). The mean CRT at 1 week post-injection showed no significant between-group difference (p = 0.781). At 5 weeks post-injection, the timolol-dorzolamide group showed a significantly smaller mean CRT than the control group (p = 0.032). The difference in mean CRT between the 2 groups disappeared, however, at 9 weeks post-injection (p = 0.462). In both groups, VA improved significantly 1 week after injection, and these changes were maintained to 9 weeks post-injection in both groups. The mean VA of the 2 groups showed no difference at any time. Conclusions Timolol-dorzolamide aqueous depressant drops may delay the elimination of intravitreal bevacizumab but clinical efficacy of the eyedrops have not been proven in this study.</abstract><cop>Berlin/Heidelberg</cop><pub>Springer-Verlag</pub><pmid>18682969</pmid><doi>10.1007/s00417-008-0917-1</doi><tpages>8</tpages></addata></record>
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1435-702X
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subjects Administration, Topical
Adult
Aged
Aged, 80 and over
Angiogenesis Inhibitors - administration & dosage
Angiogenesis Inhibitors - adverse effects
Antibodies, Monoclonal - administration & dosage
Antibodies, Monoclonal - adverse effects
Antibodies, Monoclonal, Humanized
Antihypertensive Agents - administration & dosage
Antihypertensive Agents - adverse effects
Aqueous Humor - physiology
Bevacizumab
Diabetic Retinopathy - complications
Diabetic Retinopathy - drug therapy
Diabetic Retinopathy - pathology
Drug Synergism
Drug Therapy, Combination
Female
Humans
Injections
Intraocular Pressure - drug effects
Macular Edema - drug therapy
Macular Edema - etiology
Macular Edema - pathology
Male
Medicine
Medicine & Public Health
Middle Aged
Ophthalmology
Retinal Disorders
Retinal Vein Occlusion - complications
Retinal Vein Occlusion - drug therapy
Retinal Vein Occlusion - pathology
Sulfonamides - administration & dosage
Sulfonamides - adverse effects
Thiophenes - administration & dosage
Thiophenes - adverse effects
Timolol - administration & dosage
Timolol - adverse effects
Treatment Outcome
Visual Acuity - drug effects
Vitreous Body
title Prolongation of activity of single intravitreal bevacizumab by adjuvant topical aqueous depressant (Timolol-Dorzolamide)
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