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Patel PD, Kodati B, Clark AF. Role of Glucocorticoids and Glucocorticoid Receptors in Glaucoma Pathogenesis. Cells 2023; 12:2452. [PMID: 37887296 PMCID: PMC10605158 DOI: 10.3390/cells12202452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 10/07/2023] [Accepted: 10/09/2023] [Indexed: 10/28/2023] Open
Abstract
The glucocorticoid receptor (GR), including both alternative spliced isoforms (GRα and GRβ), has been implicated in the development of primary open-angle glaucoma (POAG) and iatrogenic glucocorticoid-induced glaucoma (GIG). POAG is the most common form of glaucoma, which is the leading cause of irreversible vision loss and blindness in the world. Glucocorticoids (GCs) are commonly used therapeutically for ocular and numerous other diseases/conditions. One serious side effect of prolonged GC therapy is the development of iatrogenic secondary ocular hypertension (OHT) and OAG (i.e., GC-induced glaucoma (GIG)) that clinically and pathologically mimics POAG. GC-induced OHT is caused by pathogenic damage to the trabecular meshwork (TM), a tissue involved in regulating aqueous humor outflow and intraocular pressure. TM cells derived from POAG eyes (GTM cells) have a lower expression of GRβ, a dominant negative regulator of GC activity, compared to TM cells from age-matched control eyes. Therefore, GTM cells have a greater pathogenic response to GCs. Almost all POAG patients develop GC-OHT when treated with GCs, in contrast to a GC responder rate of 40% in the normal population. An increased expression of GRβ can block GC-induced pathogenic changes in TM cells and reverse GC-OHT in mice. The endogenous expression of GRβ in the TM may relate to differences in the development of GC-OHT in the normal population. A number of studies have suggested increased levels of endogenous cortisol in POAG patients as well as differences in cortisol metabolism, suggesting that GCs may be involved in the development of POAG. Additional studies are warranted to better understand the molecular mechanisms involved in POAG and GIG in order to develop new disease-modifying therapies to better treat these two sight threatening forms of glaucoma. The purpose of this timely review is to highlight the pathological and clinical features of GC-OHT and GIG, mechanisms responsible for GC responsiveness, potential therapeutic options, as well as to compare the similar features of GIG with POAG.
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Affiliation(s)
| | | | - Abbot F. Clark
- Department of Pharmacology & Neuroscience, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, TX 76107, USA; (P.D.P.); (B.K.)
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Reddy A, Liu SH, Brady CJ, Sieving PC, Palestine AG. Corticosteroid implants for chronic non-infectious uveitis. Cochrane Database Syst Rev 2023; 8:CD010469. [PMID: 37642198 PMCID: PMC10464657 DOI: 10.1002/14651858.cd010469.pub4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 08/31/2023]
Abstract
BACKGROUND Uveitis is a term used to describe a group of intraocular inflammatory diseases. Uveitis is the fifth most common cause of vision loss in high-income countries, with the highest incidence of disease in the working-age population. Corticosteroids are the mainstay of treatment for all subtypes of non-infectious uveitis. They can be administered orally, topically with drops, by periocular (around the eye) or intravitreal (inside the eye) injection, or by surgical implantation. OBJECTIVES To determine the efficacy and safety of steroid implants in people with chronic non-infectious posterior uveitis, intermediate uveitis, and panuveitis. SEARCH METHODS We searched CENTRAL (which contains the Cochrane Eyes and Vision Trials Register), MEDLINE Ovid, Embase, PubMed, LILACS, and three trials registries to November 2021. SELECTION CRITERIA We included randomized controlled trials comparing either fluocinolone acetonide (FA) or dexamethasone (DEX) intravitreal implants with standard-of-care therapy or sham procedures, with at least six months of follow-up after treatment. We included studies that enrolled participants of all ages, who had chronic non-infectious posterior uveitis, intermediate uveitis, or panuveitis with vision that was better than hand-motion. DATA COLLECTION AND ANALYSIS We applied standard Cochrane methodology. MAIN RESULTS We included data from four trials (683 participants, 907 eyes) that compared corticosteroid implants with either sham or standard-of-care therapy. Study characteristics and risk of bias Of the two trials that compared corticosteroid implants with sham procedure, one examined a 0.18 mg FA implant, and the other, a 0.7 mg DEX implant. The other two trials compared a 0.59 mg FA implant with standard-of-care therapy, which included systemic corticosteroids and immunosuppressive medications, if needed. Considering improvement in visual acuity, we assessed the four trials to be at either low risk, or with some concerns of risk of bias across all domains. Findings Using sham procedure as control, combined results at the six-month primary time point suggested that corticosteroid implants may decrease the risk of uveitis recurrence by 60% (relative risk [RR] 0.40, 95% confidence interval [CI] 0.30 to 0.54; 2 trials, 282 participants; low-certainty evidence); and lead to a greater improvement in best-corrected visual acuity (BCVA; mean difference [MD] 0.15 logMAR, 95% CI 0.06 to 0.24; 1 trial, 153 participants; low-certainty evidence). Evidence based on a single-study report (146 participants) suggested that steroid implants may have no effects on visual functioning quality of life, measured on the National Eye Institute 25-Item Visual Function Questionnaire (MD 2.85, 95%CI -3.64 to 9.34; 1 trial, 146 participants; moderate-certainty evidence). Using standard-of care therapy as control, combined estimates at the 24-month primary time point suggested that corticosteroid implants were likely to decrease the risk of recurrence of uveitis by 54% (RR 0.46, 95% CI 0.35 to 0.60; 2 trials, 619 eyes). Combined estimates at 24 months also suggested that steroid implants may have little to no effects on improving BCVA (MD 0.05 logMAR, 95% CI -0.02 to 0.12; 2 trials, 619 eyes; low-certainty evidence). Evidence based on a single-study report (232 participants) suggested that steroid implants may have minimal clinical effects on visual functioning (MD 4.64, 95% CI 0.13 to 9.15; 1 trial, 232 participants; moderate-certainty evidence); physical functioning (SF-36 physical subscale MD 2.95, 95% CI 0.55 to 5.35; 1 trial, 232 participants; moderate-certainty evidence); or mental health (SF-36 mental subscale MD 3.65, 95% CI 0.52 to 6.78; 1 trial, 232 participants; moderate-certainty evidence); but not on EuroQoL (MD 6.17, 95% CI 1.87 to 10.47; 1 trial, 232 participants; moderate-certainty evidence); or EuroQoL-5D scale (MD 0.02, 95% CI -0.04 to 0.08; 1 trial, 232 participants; moderate-certainty evidence). Adverse effects Compared with sham procedures, corticosteroid implants may slightly increase the risk of cataract formation (RR 2.69, 95% CI 1.17 to 6.18; 1 trial, 90 eyes; low-certainty evidence), but not the risk of cataract progression (RR 2.00, 95% CI 0.65 to 6.12; 1 trial, 117 eyes; low-certainty evidence); or the need for surgery (RR 2.98, 95% CI 0.82 to 10.81; 1 trial, 180 eyes; low-certainty evidence), during up to 12 months of follow-up. These implants may increase the risk of elevated intraocular pressure ([IOP] RR 2.81, 95% CI 1.42 to 5.56; 2 trials, 282 participants; moderate-certainty evidence); and the need for IOP-lowering eyedrops (RR 1.85, 95% CI 1.05 to 3.25; 2 trials, 282 participants; moderate-certainty evidence); but not the need for IOP-lowering surgery (RR 0.72, 95% CI 0.13 to 4.17; 2 trials, 282 participants; moderate-certainty evidence). Evidence comparing the 0.59 mg FA implant with standard-of-care suggested that the implant may increase the risk of cataract progression (RR 2.71, 95% CI 2.06 to 3.56; 2 trials, 210 eyes; low-certainty evidence); and the need for surgery (RR 2.98, 95% CI 2.33 to 3.79; 2 trials, 371 eyes; low-certainty evidence); along with the risk of elevated IOP (RR 3.64, 95% CI 2.71 to 4.87; 2 trials, 605 eyes; moderate-certainty evidence); and the need for medical (RR 3.04, 95% CI 2.36 to 3.91; 2 trials, 544 eyes; moderate-certainty evidence); or surgical interventions (RR 5.43, 95% CI 3.12 to 9.45; 2 trials, 599 eyes; moderate-certainty evidence). In either comparison, these implants did not increase the risk for endophthalmitis, retinal tear, or retinal detachment (moderate-certainty evidence). AUTHORS' CONCLUSIONS Our confidence is limited that local corticosteroid implants are superior to sham therapy or standard-of-care therapy in reducing the risk of uveitis recurrence. We demonstrated different effectiveness on BCVA relative to comparators in people with non-infectious uveitis. Nevertheless, the evidence suggests that these implants may increase the risk of cataract progression and IOP elevation, which will require interventions over time. To better understand the efficacy and safety profiles of corticosteroid implants, we need future trials that examine implants of different doses, used for different durations. The trials should measure core standard outcomes that are universally defined, and measured at comparable follow-up time points.
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Affiliation(s)
- Amit Reddy
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, Colorado, USA
| | - Su-Hsun Liu
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, Colorado, USA
- Department of Epidemiology, University of Colorado Anschutz Medical Campus, School of Public Health, Aurora, Colorado, USA
| | - Christopher J Brady
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Surgery, Division of Ophthalmology, University of Vermont, Burlington, Vermont, USA
| | - Pamela C Sieving
- Special Volunteer, National Eye Institute, Sacramento, California, USA
| | - Alan G Palestine
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, Colorado, USA
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Reddy A, Liu SH, Brady CJ, Sieving PC, Palestine AG. Corticosteroid implants for chronic non-infectious uveitis. Cochrane Database Syst Rev 2023; 1:CD010469. [PMID: 36645716 PMCID: PMC9841887 DOI: 10.1002/14651858.cd010469.pub3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Uveitis is a term used to describe a group of intraocular inflammatory diseases. Uveitis is the fifth most common cause of vision loss in high-income countries, with the highest incidence of disease in the working-age population. Corticosteroids are the mainstay of treatment for all subtypes of non-infectious uveitis. They can be administered orally, topically with drops, by periocular (around the eye) or intravitreal (inside the eye) injection, or by surgical implantation. OBJECTIVES To determine the efficacy and safety of steroid implants in people with chronic non-infectious posterior uveitis, intermediate uveitis, and panuveitis. SEARCH METHODS We searched CENTRAL (which contains the Cochrane Eyes and Vision Trials Register), MEDLINE Ovid, Embase, PubMed, LILACS, and three trials registries to November 2021. SELECTION CRITERIA: We included randomized controlled trials comparing either fluocinolone acetonide (FA) or dexamethasone (DEX) intravitreal implants with standard-of-care therapy or sham procedures, with at least six months of follow-up after treatment. We included studies that enrolled participants of all ages, who had chronic non-infectious posterior uveitis, intermediate uveitis, or panuveitis with vision that was better than hand-motion. DATA COLLECTION AND ANALYSIS We applied standard Cochrane methodology. MAIN RESULTS We included data from four trials (683 participants, 907 eyes) that compared corticosteroid implants with either sham or standard-of-care therapy. Study characteristics and risk of bias Of the two trials that compared corticosteroid implants with sham procedure, one examined a 0.18 mg FA implant, and the other, a 0.7 mg DEX implant. The other two trials compared a 0.59 mg FA implant with standard-of-care therapy, which included systemic corticosteroids and immunosuppressive medications, if needed. We assessed the four trials to be at either low risk, or with some concerns of risk of bias across all domains. Findings Using sham procedure as control, combined results at the six-month primary time point suggested that corticosteroid implants may decrease the risk of uveitis recurrence by 60% (relative risk [RR] 0.40, 95% confidence interval [CI] 0.30 to 0.54; 2 trials, 282 participants; low-certainty evidence); and lead to a greater improvement in best-corrected visual acuity (BCVA; mean difference [MD] 0.22 logMAR, 95% CI 0.13 to 0.31; 1 trial, 153 participants; low-certainty evidence). Evidence based on a single-study report (146 participants) suggested that steroid implants may have no effects on visual functioning quality of life, measured on the National Eye Institute 25-Item Visual Function Questionnaire (MD 2.85, 95%CI -3.64 to 9.34; 1 trial, 146 participants; moderate-certainty evidence). Using standard-of care therapy as control, combined estimates at the 24-month primary time point suggested that corticosteroid implants were likely to decrease the risk of recurrence of uveitis by 54% (RR 0.46, 95% CI 0.35 to 0.60; 2 trials, 619 eyes). Combined estimates at 24 months also suggested that steroid implants may have little to no effects on BCVA (MD 0.05 logMAR, 95% CI -0.02 to 0.12; 2 trials, 619 eyes; low-certainty evidence). Evidence based on a single-study report (232 participants) suggested that steroid implants may have minimal clinical effects on visual functioning (MD 4.64, 95% CI 0.13 to 9.15; 1 trial, 232 participants; moderate-certainty evidence); physical functioning (SF-36 physical subscale MD 2.95, 95% CI 0.55 to 5.35; 1 trial, 232 participants; moderate-certainty evidence); or mental health (SF-36 mental subscale MD 3.65, 95% CI 0.52 to 6.78; 1 trial, 232 participants; moderate-certainty evidence); but not on EuroQoL (MD 6.17, 95% CI 1.87 to 10.47; 1 trial, 232 participants; moderate-certainty evidence); or EuroQoL-5D scale (MD 0.02, 95% CI -0.04 to 0.08; 1 trial, 232 participants; moderate-certainty evidence). Adverse effects Compared with sham procedures, corticosteroid implants may slightly increase the risk of cataract formation (RR 2.69, 95% CI 1.17 to 6.18; 1 trial, 90 eyes; low-certainty evidence), but not the risk of cataract progression (RR 2.00, 95% CI 0.65 to 6.12; 1 trial, 117 eyes; low-certainty evidence); or the need for surgery (RR 2.98, 95% CI 0.82 to 10.81; 1 trial, 180 eyes; low-certainty evidence), during up to 12 months of follow-up. These implants may increase the risk of elevated intraocular pressure ([IOP] RR 2.81, 95% CI 1.42 to 5.56; 2 trials, 282 participants; moderate-certainty evidence); and the need for IOP-lowering eyedrops (RR 1.85, 95% CI 1.05 to 3.25; 2 trials, 282 participants; moderate-certainty evidence); but not the need for IOP-lowering surgery (RR 0.72, 95% CI 0.13 to 4.17; 2 trials, 282 participants; moderate-certainty evidence). Evidence comparing the 0.59 mg FA implant with standard-of-care suggested that the implant may increase the risk of cataract progression (RR 2.71, 95% CI 2.06 to 3.56; 2 trials, 210 eyes; low-certainty evidence); and the need for surgery (RR 2.98, 95% CI 2.33 to 3.79; 2 trials, 371 eyes; low-certainty evidence); along with the risk of elevated IOP (RR 3.64, 95% CI 2.71 to 4.87; 2 trials, 605 eyes; moderate-certainty evidence); and the need for medical (RR 3.04, 95% CI 2.36 to 3.91; 2 trials, 544 eyes; moderate-certainty evidence); or surgical interventions (RR 5.43, 95% CI 3.12 to 9.45; 2 trials, 599 eyes; moderate-certainty evidence). In either comparison, these implants did not increase the risk for endophthalmitis, retinal tear, or retinal detachment (moderate-certainty evidence). AUTHORS' CONCLUSIONS: Our confidence is limited that local corticosteroid implants are superior to sham therapy or standard-of-care therapy in reducing the risk of uveitis recurrence. We demonstrated different effectiveness on BCVA relative to comparators in people with non-infectious uveitis. Nevertheless, the evidence suggests that these implants may increase the risk of cataract progression and IOP elevation, which will require interventions over time. To better understand the efficacy and safety profiles of corticosteroid implants, we need future trials that examine implants of different doses, used for different durations. The trials should measure core standard outcomes that are universally defined, and measured at comparable follow-up time points.
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Affiliation(s)
- Amit Reddy
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, Colorado, USA
| | - Su-Hsun Liu
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, Colorado, USA
- Department of Epidemiology, University of Colorado Anschutz Medical Campus, School of Public Health, Aurora, Colorado, USA
| | - Christopher J Brady
- Wilmer Eye Institute, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Surgery, Division of Ophthalmology, University of Vermont, Burlington, Vermont, USA
| | - Pamela C Sieving
- Special Volunteer, National Eye Institute, Sacramento, California, USA
| | - Alan G Palestine
- Department of Ophthalmology, University of Colorado Anschutz Medical Campus, School of Medicine, Aurora, Colorado, USA
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Elhamaky TR. Long-term efficacy of dexamethasone intravitreal implant in the treatment of Vogt-Koyanagi-Harada disease relapsing posterior uveitis. Indian J Ophthalmol 2022; 70:2465-2470. [PMID: 35791135 PMCID: PMC9426163 DOI: 10.4103/ijo.ijo_260_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose: To investigate the efficacy and safety of dexamethasone intravitreal implant in the treatment of relapsing posterior uveitis in patients with chronic recurrent Vogt–Koyanagi–Harada (VKH) disease. Methods: This was a prospective study of 29 eyes of 16 patients with posterior uveitis in chronic recurrent VKH disease. All patients received previous systemic steroid and immunosuppressive regimens. All patients underwent a comprehensive ophthalmic examination, including best-corrected visual acuity (BCVA), Indocyanine green angiography (ICGA), fundus fluorescein angiography (FFA), and spectral-domain optical coherence tomography (SD-OCT). All patients underwent intravitreal injection with sustained-release dexamethasone 0.7 mg implant (Ozurdex®). Primary outcome measures included mean change in BCVA and central foveal thickness (CFT) at 24 months of follow-up compared to the baseline. Results: At 24 month of follow-up, the mean BCVA improved from 0.82 ± 0.13 to 0.38 ± 0.06 logMAR (P < 0.0001). The mean CFT reduced from 505 ± 29 to 244 ± 23 um (P < 0.0001). The mean intraocular pressure (IOP) changed from 15.1 ± 2.2 to 16.9 ± 3.1 mmHg with no significant value (P-value = 0.0955). Twenty-one eyes (72.4%) received one injection, whereas eight eyes (27.6%) required two injections. The mean number of injections was 1.2 ± 0.60. The mean follow-up time was 24.75 ± 0.9 months. No serious ocular or systemic adverse events were noted during the follow-up period. Ocular hypertension was recorded in three (10.3%) eyes and controlled by IOP lowering medications. Cataract progression occurred in 11 (37.9%) eyes. Conclusion: Our cohort highlights the beneficial effects of the dexamethasone implant of 0.7 mg in the treatment of VKH disease relapsing posterior uveitis improving visual acuity, reducing macular edema, and minimizing the burden of systemic steroids in this sample study.
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Affiliation(s)
- Tarek R Elhamaky
- Department of Ophthalmology, Faculty of Medicine, Benha University, Benha, Egypt
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Incidence and Risk Factors of Ocular Hypertension and Glaucoma in Patients With Acanthamoeba Keratitis. Eye Contact Lens 2021; 47:588-591. [PMID: 34334725 DOI: 10.1097/icl.0000000000000824] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES To determine the incidence of ocular hypertension (OHT) and glaucoma in patients with acanthamoeba keratitis (AK) and to outline the risk factors for the development of glaucoma. METHODS A retrospective review of patients diagnosed with AK at our institute during the period from 2000 to 2018. The main outcome measures were the incidence of OHT and glaucoma, and risk factors for the development of glaucoma. RESULTS Fifty-two eyes diagnosed with AK were included. The incidence of OHT and glaucoma was 51.9% and 32.7%, respectively. The mean duration from disease onset to the first attack of elevated intraocular pressure was 8.4±16.6 months. The use of corticosteroids in the treatment regimen was significantly associated with the development of glaucoma (odds ratio, 3.93; 95% confidence interval, 0.96-16.15; P=0.049). At the last follow-up visit, both patients with glaucoma and nonglaucoma patients had improved visual acuity without a difference in the mean amount of logarithm of the minimum angle of resolution acuity improvement among them (0.56±0.91 vs. 0.67±0.87, P=0.686). CONCLUSION Our findings confirm that OHT and glaucoma are frequent complications in AK. Patients treated with a regimen containing corticosteroids are at a higher risk; thus, they should receive close intraocular pressure monitoring.
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Long-term Outcomes of Glaucoma Drainage Implants in Uveitic Eyes With Fluocinolone Acetonide Implants. J Glaucoma 2020; 29:789-793. [DOI: 10.1097/ijg.0000000000001549] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Shah KK, Majumder PD, Biswas J. Intravitreal therapeutic agents in noninfectious uveitic macular edema. Indian J Ophthalmol 2018; 66:1060-1073. [PMID: 30038143 PMCID: PMC6080427 DOI: 10.4103/ijo.ijo_35_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The management of uveitis is challenging for most treating ophthalmologists. The treatment of uveitis often requires the use of high dose of systemic corticosteroid and immunosuppressive agents, which are almost always associated with potential side effects. Intravitreal medications have become a popular mode of drug administration in uveitis patients as they provide high volume of drug to the target tissues, eliminating the risk of systemic toxicity. There has been tremendous development in the intravitreal therapeutics over the last few years. With the advent of sustained-release technique, increasing patient compliance, biodegradable nature of the implant, and introduction of newer agents with better safety profile, the intravitreal medications have become more popular in recent years. This review presents evidence in the scientific literature supporting the use of intravitreal medications for the management of uveitis and its complications.
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Affiliation(s)
- Kunal Kaushik Shah
- Shri Bhagwan Mahavir VitreoRetinal Services, Sankara Nethralaya, Chennai, Tamil Nadu, India
| | | | - Jyotirmay Biswas
- Department of Uvea, Medical Research Foundation, Sankara Nethralaya, Chennai, Tamil Nadu, India
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Intravitreal Steroid Implants in the Management of Retinal Disease and Uveitis. Int Ophthalmol Clin 2018; 56:127-49. [PMID: 27575764 DOI: 10.1097/iio.0000000000000132] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Dammacco R. Systemic lupus erythematosus and ocular involvement: an overview. Clin Exp Med 2017; 18:135-149. [PMID: 29243035 DOI: 10.1007/s10238-017-0479-9] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2017] [Accepted: 11/02/2017] [Indexed: 12/23/2022]
Abstract
Systemic lupus erythematosus (SLE) is a multisystem autoimmune disease of undefined etiology and with remarkably heterogeneous clinical features. Virtually any organ system can be affected, including the eye. SLE-related eye involvement can be diagnosed in approximately one-third of the patients and is usually indicative of disease activity. An early diagnosis and the adoption of suitable therapeutic measures are necessary to prevent sight-threatening consequences, especially in patients with juvenile SLE. Periocular lesions, such as eyelid involvement and orbital inflammation, are relatively rare and, in case of orbital masses, may require a biopsy control. Keratoconjunctivitis sicca or secondary Sjögren's syndrome is the most frequent ophthalmic manifestation of SLE. According to its variable severity, lubricating tear drops may be sufficient in mild cases, whereas cyclosporine-A ophthalmic solution, glucocorticoids (GCs), methotrexate, and/or other immunosuppressive drugs may be required in the more severe cases. Partial occlusion of the lacrimal punctum by thermal cautery is rarely applied. Although uncommon, episcleritis and scleritis can sometimes be detected as an initial finding of SLE and reveal themselves as moderate to intense ocular pain, redness, blurred vision, and lacrimation. Unilateral or more often bilateral retinopathy is responsible for visual loss of variable severity and is ascribed to vasculitis of the retinal capillaries and arterioles. In addition to the combined treatment suitable for all patients with active SLE, intravitreal bevacizumab should be considered in cases of severe vaso-occlusive retinopathy and laser photocoagulation in cases of neovascularization. Purtscher-like retinopathy is likely ascribable to the formation of microemboli that results in retinal vascular occlusion and microvascular infarcts. Choroidal disease is characterized by monolateral or bilateral blurred vision. Because of the choroidal effusion, retinal detachment and secondary angle-closure glaucoma may occur. Ischemic optic neuropathy is characterized by acute-onset and progressive binocular visual impairment as a consequence of occlusion of the small vessels of the optic nerves due to immune complex vasculitis. Intravenous GC boluses followed by oral GCs and/or, in case of recurrence, intravenous cyclophosphamide and/or rituximab are commonly employed. Neovascularization can be treated by intravitreal bevacizumab and progression of retinal ischemic areas by retinal laser photocoagulation. Ocular adverse events (AE) have been described following the long-term administration of one or more of the drugs presently used for the treatment of SLE patients. Posterior subcapsular cataracts and secondary open-angle glaucoma are common AE of the prolonged GC administration. The long-term administration of hydroxychloroquine (HCQ) sulfate is well known to be associated with AE, such as vortex keratopathy and in particular the often irreversible and sight-threatening maculopathy. Length of administration > 5 years, > 1000 g total HCQ consumption, > 6.5 mg/kg daily dosing, coexistence of renal disease, and preexisting maculopathy are all considered risk factors for HCQ-induced retinopathy. Ocular AE of additional immunosuppressive and biological agents are still poorly known, given the worldwide more limited experience with their long-term use. A thorough ophthalmological control is strongly recommended at closer intervals for all SLE patients, in step with the total length of exposure to the drugs and the cumulative dose administered.
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Affiliation(s)
- Rosanna Dammacco
- Department of Basic Medical Sciences, Neurosciences and Sensory Organ, University of Bari Medical School, Clinica Oculistica, Policlinico, Piazza Giulio Cesare, 70124, Bari, Italy.
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Kinoshita S, Ohguchi T, Noda K, Murata M, Yasueda SI, Obata H, Matsunaga T, Fukushima T, Kanda A, Ishida S. Evaluation of the Safety and Tolerability of Conjunctival Ring for Posterior Segment of the Eye. Curr Eye Res 2017; 42:1149-1154. [PMID: 28358216 DOI: 10.1080/02713683.2017.1287277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE To evaluate the safety and tolerability of conjunctival rings (CRs), a novel device for drug delivery to the posterior segment of the eye. METHODS In animal studies, CRs containing 5% dexamethasone sodium phosphate (DSP) or vehicle solution were placed on the right and left eyes of C57BL/6J mice, respectively. Contact lenses (CLs) containing vehicle solution were used as a control. Twenty-four hours after placement of the CRs, corneal fluorescein staining was graded based on the McDonald-Shadduck scoring system, ranging from 0 to 4. In humans, CRs containing vehicle solution were placed on the right eye of healthy volunteers for 9 hours. The corneal curvature, corneal thickness, intraocular pressure, visual acuity, tear production (Schirmer I test), tear film break-up time and fluorescein staining scores of the cornea (scores ranging from 0 to 3) and conjunctiva (scores ranging from 0 to 6) were assessed before and after wearing the CRs. The release characteristics of DSP from CRs were also evaluated. RESULTS In animal experiments, corneal fluorescein staining scores were 1 or less in all the groups, and there was no significant difference between the CR group and the CL group. In the preclinical safety evaluation of CR for humans, ophthalmic examination revealed that CR caused no significant changes in all the parameters investigated including corneal curvature (p = 0.77), corneal thickness (p = 0.96), intraocular pressure (p = 0.59), visual acuity (p = 0.14), Schirmer I test results (p = 0.76), tear film break-up time (p = 0.68), corneal fluorescein staining scores (p = 0.64), and conjunctival fluorescein staining scores (p = 0.52). The DSP release from CRs occurs within a few hours, which is similar to the drug-release property of medicated CL, as reported previously. CONCLUSIONS The current data showed the safety and tolerability of CR as a drug delivery device for the treatment of posterior segment diseases.
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Affiliation(s)
- Satoshi Kinoshita
- a Laboratory of Ocular Cell Biology and Visual Science , Hokkaido University Graduate School of Medicine , Sapporo , Japan.,b Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Takeshi Ohguchi
- a Laboratory of Ocular Cell Biology and Visual Science , Hokkaido University Graduate School of Medicine , Sapporo , Japan.,b Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Kousuke Noda
- a Laboratory of Ocular Cell Biology and Visual Science , Hokkaido University Graduate School of Medicine , Sapporo , Japan.,b Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Miyuki Murata
- a Laboratory of Ocular Cell Biology and Visual Science , Hokkaido University Graduate School of Medicine , Sapporo , Japan.,b Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Shin-Ichi Yasueda
- c Research Laboratories, Senju Pharmaceutical Co., Ltd. , Kobe , Japan
| | - Haruka Obata
- d Research Laboratories, SEED Co., Ltd. , Saitama , Japan
| | - Toru Matsunaga
- d Research Laboratories, SEED Co., Ltd. , Saitama , Japan
| | | | - Atsuhiro Kanda
- a Laboratory of Ocular Cell Biology and Visual Science , Hokkaido University Graduate School of Medicine , Sapporo , Japan.,b Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
| | - Susumu Ishida
- a Laboratory of Ocular Cell Biology and Visual Science , Hokkaido University Graduate School of Medicine , Sapporo , Japan.,b Department of Ophthalmology , Hokkaido University Graduate School of Medicine , Sapporo , Japan
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Severe Corticosteroid-Induced Ocular Hypertension Requiring Bilateral Trabeculectomies in a Patient with Takayasu's Arteritis. Case Rep Ophthalmol Med 2016; 2016:5253029. [PMID: 27957366 PMCID: PMC5121439 DOI: 10.1155/2016/5253029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 10/23/2016] [Indexed: 11/26/2022] Open
Abstract
We present a rare case of severe corticosteroid-induced ocular hypertension (OHT) after prolonged systemic corticosteroid use in a young woman with Takayasu's arteritis. As she did not sufficiently respond to ocular antihypertensive therapies, bilateral enhanced trabeculectomies were required to normalize her intraocular pressures. The systemic side effects of corticosteroids are well known, yet steroid-induced OHT and glaucoma remain silent causes of ocular morbidity. This case highlights the importance of IOP-monitoring in visually asymptomatic patients on systemic corticosteroids. It further emphasizes the need to raise awareness of the potential ocular side effects of steroids amongst physicians, in particular those looking after patients with autoimmune and inflammatory diseases.
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Tan HY, Agarwal A, Lee CS, Chhablani J, Gupta V, Khatri M, Nirmal J, Pavesio C, Agrawal R. Management of noninfectious posterior uveitis with intravitreal drug therapy. Clin Ophthalmol 2016; 10:1983-2020. [PMID: 27789936 PMCID: PMC5068474 DOI: 10.2147/opth.s89341] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Uveitis is an important cause of vision loss worldwide due to its sight-threatening complications, especially cystoid macular edema, as well as choroidal neovascularization, macular ischemia, cataract, and glaucoma. Systemic corticosteroids are the mainstay of therapy for noninfectious posterior uveitis; however, various systemic side effects can occur. Intravitreal medication achieves a therapeutic level in the vitreous while minimizing systemic complications and is thus used as an exciting alternative. Corticosteroids, antivascular endothelial growth factors, immunomodulators such as methotrexate and sirolimus, and nonsteroidal anti-inflammatory drugs are currently available for intravitreal therapy. This article reviews the existing literature for efficacy and safety of these various options for intravitreal drug therapy for the management of noninfectious uveitis (mainly intermediate, posterior, and panuveitis).
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Affiliation(s)
- Hui Yi Tan
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Aniruddha Agarwal
- Department of Vitreoretina, Stanley M Truhlsen Eye Institute, University of Nebraska Medical Center, Omaha, NE
| | - Cecilia S Lee
- Department of Ophthalmology, University of Washington, Seattle, WA, USA
| | - Jay Chhablani
- Department of Vitreoretina, L V Prasad Eye Institute, Hyderabad, Telangana
| | - Vishali Gupta
- Department of Retina and Uvea, Post Graduate Institute of Medical Education and Research, Chandigarh
| | - Manoj Khatri
- Department of Retina, Rajan Eye Care Hospital, Chennai, Tamil Nadu, India
| | - Jayabalan Nirmal
- School of Material Science and Engineering, Nanyang Technological University, Singapore
| | - Carlos Pavesio
- Department of Medical Retina, Moorfields Eye Hospital, NHS Foundation Trust, London, UK
| | - Rupesh Agrawal
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore; School of Material Science and Engineering, Nanyang Technological University, Singapore; Department of Medical Retina, Moorfields Eye Hospital, NHS Foundation Trust, London, UK; Department of Ophthalmology, National Healthcare Group Eye Institute, Tan Tock Seng Hospital, Singapore
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Cham A, Bansal M, Banda HK, Kwon Y, Tlucek PS, Bassuk AG, Tsang SH, Sobol WM, Folk JC, Yeh S, Mahajan VB. Secondary glaucoma in CAPN5-associated neovascular inflammatory vitreoretinopathy. Clin Ophthalmol 2016; 10:1187-97. [PMID: 27390515 PMCID: PMC4930228 DOI: 10.2147/opth.s103324] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Objective The objective of this study was to review the treatment outcomes of patients with secondary glaucoma in cases of autosomal dominant neovascular inflammatory vitreoretinopathy (ADNIV), a hereditary autoimmune uveitis due to mutations in CAPN5. Patients and methods A retrospective, observational case series was assembled from ADNIV patients with secondary glaucoma. The main outcome measures were intraocular pressure (IOP), visual acuity, use of antiglaucoma medications, ocular surgeries, and adverse outcomes. Perimetry and optic disk optical coherence tomography (OCT) were also analyzed. Results Nine eyes of five ADNIV patients with secondary glaucoma were reviewed. Each received a fluocinolone acetonide (FA) implant for the management of posterior uveitis. Following implantation, no eyes developed neovascular glaucoma. Five eyes (in patients 1, 2, and 5) required Ahmed glaucoma valve surgery for the management of steroid-responsive glaucoma. Patient 2 also developed angle closure with iris bombe and underwent laser peripheral iridotomy. Patient 4 had both hypotony and elevated IOP that required periodic antiglaucoma medication in the FA-implanted eye. Patient 3 did not develop steroid-response glaucoma in either eye. Optic disk examinations were obscured by fibrosis and better assessed with OCT. Conclusion ADNIV patients show combined mechanism secondary glaucoma best assessed by OCT of the optic disk. The FA implants have reduced uveitic and neovascular glaucoma. Nevertheless, IOP management remains complex due to steroid-response glaucoma, angle closure glaucoma, and hypotony.
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Affiliation(s)
- Abdourahman Cham
- Department of Ophthalmology and Visual Sciences; Omics Laboratory, University of Iowa, Iowa City, IA, USA
| | - Mayank Bansal
- Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, India
| | - Himanshu K Banda
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA
| | - Young Kwon
- Department of Ophthalmology and Visual Sciences
| | | | | | - Stephen H Tsang
- Barbara and Donald Jonas Laboratory of Stem Cells and Regenerative Medicine and Bernard and Shirlee Brown Glaucoma Laboratory, Department of Pathology and Cell Biology, Institute of Human Nutrition, College of Physicians and Surgeons, Columbia University; Edward S Harkness Eye Institute, New York-Presbyterian Hospital, New York, NY
| | | | | | - Steven Yeh
- Department of Ophthalmology, Emory University School of Medicine, Atlanta, GA
| | - Vinit B Mahajan
- Department of Ophthalmology and Visual Sciences; Omics Laboratory, University of Iowa, Iowa City, IA, USA
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Brady CJ, Villanti AC, Law HA, Rahimy E, Reddy R, Sieving PC, Garg SJ, Tang J. Corticosteroid implants for chronic non-infectious uveitis. Cochrane Database Syst Rev 2016; 2:CD010469. [PMID: 26866343 PMCID: PMC5038923 DOI: 10.1002/14651858.cd010469.pub2] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Uveitis is a term used to describe a heterogeneous group of intraocular inflammatory diseases of the anterior, intermediate, and posterior uveal tract (iris, ciliary body, choroid). Uveitis is the fifth most common cause of vision loss in high-income countries, accounting for 5% to 20% of legal blindness, with the highest incidence of disease in the working-age population.Corticosteroids are the mainstay of acute treatment for all anatomical subtypes of non-infectious uveitis and can be administered orally, topically with drops or ointments, by periocular (around the eye) or intravitreal (inside the eye) injection, or by surgical implantation. OBJECTIVES To determine the efficacy and safety of steroid implants in people with chronic non-infectious posterior uveitis, intermediate uveitis, and panuveitis. SEARCH METHODS We searched CENTRAL (which contains the Cochrane Eyes and Vision Trials Register) (Issue 10, 2015), Ovid MEDLINE, Ovid MEDLINE In-Process and Other Non-Indexed Citations, Ovid MEDLINE Daily, Ovid OLDMEDLINE (January 1946 to November 2015), EMBASE (January 1980 to November 2015), PubMed (1948 to November 2015), Latin American and Caribbean Health Sciences Literature Database (LILACS) (1982 to November 2015), the metaRegister of Controlled Trials (mRCT) (www.controlled-trials.com) (last searched 15 April 2013), ClinicalTrials.gov (www.clinicaltrials.gov), and the World Health Organization (WHO) International Clinical Trials Registry Platform (ICTRP) (www.who.int/ictrp/search/en). We did not use any date or language restrictions in the electronic search for studies. We last searched the electronic databases on 6 November 2015.We also searched reference lists of included study reports, citation databases, and abstracts and clinical study presentations from professional meetings. SELECTION CRITERIA We included randomized controlled trials comparing either fluocinolone acetonide (FA) or dexamethasone intravitreal implants with standard-of-care therapy with at least six months of follow-up after treatment. We included studies that enrolled participants of all ages who had chronic non-infectious posterior uveitis, intermediate uveitis, or panuveitis with vision that was better than hand-motion. DATA COLLECTION AND ANALYSIS Two review authors independently reviewed studies for inclusion. Two review authors independently extracted data and assessed the risk of bias for each study. MAIN RESULTS We included data from two studies (619 eyes of 401 participants) that compared FA implants with standard-of-care therapy. Both studies used similar standard-of-care therapy that included administration of prednisolone and, if needed, immunosuppressive agents. The studies included participants from Australia, France, Germany, Israel, Italy, Portugal, Saudi Arabia, Spain, Switzerland, Turkey, the United Kingdom, and the United States. We assessed both studies at high risk of performance and detection bias.Only one study reported our primary outcome, recurrence of uveitis at any point during the study through 24 months. The evidence, judged as moderate-quality, showed that a FA implant probably prevents recurrence of uveitis compared with standard-of-care therapy (risk ratio (RR) 0.29, 95% confidence interval (CI) 0.14 to 0.59; 132 eyes). Both studies reported safety outcomes, and moderate-quality evidence showed increased risks of needing cataract surgery (RR 2.98, 95% CI 2.33 to 3.79; 371 eyes) and surgery to lower intraocular pressure (RR 7.48, 95% CI 3.94 to 14.19; 599 eyes) in the implant group compared with standard-of-care therapy through two years of follow-up. No studies compared dexamethasone implants with standard-of-care therapy. AUTHORS' CONCLUSIONS After considering both benefits and harms reported from two studies in which corticosteroids implants were compared with standard-of-care therapy, we are unable to conclude that the implants are superior to traditional systemic therapy for the treatment of non-infectious uveitis. These studies exhibited heterogeneity in design and outcomes that measured efficacy. Pooled findings regarding safety outcomes suggest increased risks of post-implant surgery for cataract and high intraocular pressure compared with standard-of-care therapy.
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Affiliation(s)
- Christopher J Brady
- Johns Hopkins University School of MedicineWilmer Eye InstituteBaltimoreMarylandUSA
| | - Andrea C Villanti
- Johns Hopkins Bloomberg School of Public HealthDepartment of Health, Behavior and SocietyBaltimoreMarylandUSA
| | - Hua Andrew Law
- Johns Hopkins Bloomberg School of Public HealthDepartment of Epidemiology615 N. Wolfe StreetBaltimoreMarylandUSA21205
| | - Ehsan Rahimy
- Thomas Jefferson UniversityMidAtlantic Retina, The Retina Service of Wills Eye HospitalPhiladelphiaPennsylvaniaUSA
| | - Rahul Reddy
- Associated Retinal ConsultantsPhoenixArizonaUSA
| | - Pamela C Sieving
- National Institutes of Health Library10 Center DriveRoom 1L09G MSC 1150BethesdaMarylandUSA20892
| | - Sunir J Garg
- Thomas Jefferson UniversityMidAtlantic Retina, The Retina Service of Wills Eye HospitalPhiladelphiaPennsylvaniaUSA
| | - Johnny Tang
- University Hospitals Eye Institute/Case Western Reserve UniversityUniversity Hospitals Eye Institute11100 Euclid Avenue, Lakeside 4107ClevelandOhioUSA44106
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Inducible scAAV2.GRE.MMP1 lowers IOP long-term in a large animal model for steroid-induced glaucoma gene therapy. Gene Ther 2016; 23:438-49. [PMID: 26855269 PMCID: PMC4860029 DOI: 10.1038/gt.2016.14] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 01/25/2016] [Indexed: 11/17/2022]
Abstract
Current treatment of glaucoma relies on administration of daily drops or eye surgery. A gene therapy approach to treat steroid-induced glaucoma would bring a resolution to millions of people worldwide that depend on glucocorticoid therapy for a myriad of inflammatory disorders. Previously, we had characterized a short-term Adh.GRE.MMP1 gene vector for the production of steroid-induced MMP1 in the trabecular meshwork and tested reduction of elevated intraocular pressure (IOP) in a sheep model. Here we conducted a trial transferring the same transgene cassette to a clinically safe vector (scAAV2), and extended the therapeutic outcome to longer periods of times. No evidence of ocular and/or systemic toxicity was observed. Viral genome distributions showed potential re-inducible vector DNAs in the trabecular meshwork (0.4 vg/cell) and negligible copies in six major internal organs (0.00002-0.005 vg/cell). Histological sections confirmed successful transduction of scAAV2.GFP to the trabecular meshwork. Optimization of the sheep steroid–induced hypertensive model revealed that topical ophthalmic drug difluprednate 0.05% (durezol) induced the highest IOP elevation in the shortest time. This is the first efficacy/toxicity study of a feasible gene therapy treatment of steroid-induced hypertension using clinically accepted scAAV vectors in a large animal model.
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Overby DR, Clark AF. Animal models of glucocorticoid-induced glaucoma. Exp Eye Res 2015; 141:15-22. [PMID: 26051991 DOI: 10.1016/j.exer.2015.06.002] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 06/02/2015] [Accepted: 06/03/2015] [Indexed: 10/23/2022]
Abstract
Glucocorticoid (GC) therapy is widely used to treat a variety of inflammatory diseases and conditions. While unmatched in their anti-inflammatory and immunosuppressive activities, GC therapy is often associated with the significant ocular side effect of GC-induced ocular hypertension (OHT) and iatrogenic open-angle glaucoma. Investigators have generated GC-induced OHT and glaucoma in at least 8 different species besides man. These models mimic many features of this condition in man and provide morphologic and molecular insights into the pathogenesis of GC-OHT. In addition, there are many clinical, morphological, and molecular similarities between GC-induced glaucoma and primary open-angle glaucoma (POAG), making animals models of GC-induced OHT and glaucoma attractive models in which to study specific aspects of POAG.
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Affiliation(s)
- Darryl R Overby
- Department of Bioengineering, Imperial College London, London, UK
| | - Abbot F Clark
- North Texas Eye Research Institute, U. North Texas Health Science Center, Ft. Worth, TX, USA.
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Yang X, Patel S, Sheng Y, Pal D, Mitra AK. Statistical design for formulation optimization of hydrocortisone butyrate-loaded PLGA nanoparticles. AAPS PharmSciTech 2014; 15:569-87. [PMID: 24504495 PMCID: PMC4037477 DOI: 10.1208/s12249-014-0072-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 12/23/2013] [Indexed: 11/30/2022] Open
Abstract
The aim of this investigation was to develop hydrocortisone butyrate (HB)-loaded poly(D,L-lactic-co-glycolic acid) (PLGA) nanoparticles (NP) with ideal encapsulation efficiency (EE), particle size, and drug loading (DL) under emulsion solvent evaporation technique utilizing various experimental statistical design modules. Experimental designs were used to investigate specific effects of independent variables during preparation of HB-loaded PLGA NP and corresponding responses in optimizing the formulation. Plackett-Burman design for independent variables was first conducted to prescreen various formulation and process variables during the development of NP. Selected primary variables were further optimized by central composite design. This process leads to an optimum formulation with desired EE, particle size, and DL. Contour plots and response surface curves display visual diagrammatic relationships between the experimental responses and input variables. The concentration of PLGA, drug, and polyvinyl alcohol and sonication time were the critical factors influencing the responses analyzed. Optimized formulation showed EE of 90.6%, particle size of 164.3 nm, and DL of 64.35%. This study demonstrates that statistical experimental design methodology can optimize the formulation and process variables to achieve favorable responses for HB-loaded NP.
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Affiliation(s)
- Xiaoyan Yang
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, HSB 5258, Kansas City, Missouri 64108 USA
| | - Sulabh Patel
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, HSB 5258, Kansas City, Missouri 64108 USA
| | - Ye Sheng
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, HSB 5258, Kansas City, Missouri 64108 USA
| | - Dhananjay Pal
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, HSB 5258, Kansas City, Missouri 64108 USA
| | - Ashim K. Mitra
- Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri-Kansas City, 2464 Charlotte Street, HSB 5258, Kansas City, Missouri 64108 USA
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Ciulla TA, Harris A, McIntyre N, Jonescu-Cuypers C. Treatment of diabetic macular edema with sustained-release glucocorticoids: intravitreal triamcinolone acetonide, dexamethasone implant, and fluocinolone acetonide implant. Expert Opin Pharmacother 2014; 15:953-9. [PMID: 24661081 DOI: 10.1517/14656566.2014.896899] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Diabetic macular edema (DME) can be treated with intravitreal glucocorticoids, particularly triamcinolone acetonide, dexamethasone (DEX), and fluocinolone acetonide (FA). AREAS COVERED The pathophysiology of DME includes multiple growth factors such as VEGF and also inflammatory mediators. Glucocorticoids act on DME through multiple pathways, and current research into their efficacy, safety, and therapeutic potential when administered intravitreally is discussed. CONCLUSION The intravitreal route of administration minimizes systemic side effects of glucocorticoids. Furthermore, sustained-release low-dose delivery via the DEX implant or the FA implant will limit frequent intravitreal injection and possibly some cost associated with intravitreal anti-VEGF therapy. In addition, the durable action of these treatments facilitates combination therapy. Patients can receive these implants as foundational therapy, and then receive additional treatment with laser or intravitreal anti-VEGF agents as combination therapy, which may conceivably provide some synergistic benefit. While the FA implant lasts much longer than the DEX implant, potentially decreasing the visit and treatment burden on patients and their families, the FA implant appears to have a greater risk of inducing ocular hypertension and cataract. However, these modalities have not been directly compared in a clinical trial and there is insufficient evidence to draw more elaborate conclusions.
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Affiliation(s)
- Thomas A Ciulla
- Midwest Eye Institute, Retina Service Indianapolis, IN , USA
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Pars plana Ahmed valve and vitrectomy in patients with glaucoma associated with posterior segment disease. Retina 2014; 33:2059-68. [PMID: 23609124 DOI: 10.1097/iae.0b013e31828992c3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE To assess the safety and efficacy of a modified technique for pars plana placement of the Ahmed valve in combination with pars plana vitrectomy in the treatment of glaucoma associated with posterior segment disease. METHODS Thirty-nine eyes with glaucoma associated with posterior segment disease underwent pars plana vitrectomy combined with Ahmed valve placement. All valves were placed in the pars plana using a modified technique, without the pars plana clip, and using a scleral patch graft. RESULTS The 24 eyes diagnosed with neovascular glaucoma had an improvement in intraocular pressure from 37.6 mmHg to 13.8 mmHg and best-corrected visual acuity from 2.13 logarithm of minimum angle of resolution to 1.40 logarithm of minimum angle of resolution. Fifteen eyes diagnosed with steroid-induced glaucoma had an improvement in intraocular pressure from 27.9 mmHg to 14.1 mmHg and best-corrected visual acuity from 1.38 logarithm of minimum angle of resolution to 1.13 logarithm of minimum angle of resolution. Complications included four cases of cystic bleb formation and one case of choroidal detachment and explantation for hypotony. CONCLUSION Ahmed valve placement through the pars plana during vitrectomy is an effective option for managing complex cases of glaucoma without the use of the pars plana clip.
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Postoperative outcomes after fluocinolone acetonide implant surgery in patients with birdshot chorioretinitis and other types of posterior and panuveitis. Retina 2014; 33:1684-93. [PMID: 23549097 DOI: 10.1097/iae.0b013e31828396cf] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
PURPOSES To evaluate outcomes after placement of fluocinolone acetonide (FA) implants in eyes with birdshot chorioretinitis and to compare these outcomes with eyes with posterior and panuveitis. METHODS This is a retrospective cohort study of 48 eyes from patients with posterior and panuveitis treated with FA implants from 2006 to 2010. Outcome measures include visual acuity, intraocular pressure, need for glaucoma surgery, postoperative complications, and control of inflammation. RESULTS All eyes treated with FA implants achieved improved control of inflammation and decreased reliance on adjunctive therapy. Birdshot chorioretinitis eyes had a statistically significant increase in intraocular pressure in the first 4 months after FA implantation (P = 0.04) compared with baseline intraocular pressure. A higher percentage of eyes with birdshot chorioretinitis required glaucoma surgery and after a shorter time period after FA implantation than did eyes with other forms of posterior and panuveitis (0.42/eye-year vs. 0.11/eye-year; median time to glaucoma surgery: 15.5 months vs. 31.5 months respectively, hazard ratio, 3.4; 95% confidence interval, 1.0-10.8, P = 0.04). CONCLUSION Although the FA implant is effective in controlling inflammation and reducing the need for systemic immunosuppressive therapy, eyes of patients with birdshot chorioretinitis tend to have a more robust intraocular pressure response to the FA implant than eyes with other types of posterior and panuveitis.
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Din NM, Isa H, Taylor SRJ, Barton K, Lightman SL. Intraocular pressure elevation in uveitis. EXPERT REVIEW OF OPHTHALMOLOGY 2014. [DOI: 10.1586/eop.11.75] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chan EW, Wong TT, Htoon HM, Ho CL, Tan DT, Mehta JS. De novo ocular hypertension after Descemet stripping endothelial keratoplasty: comparative 3-year incidence, risk factors, and outcomes. Clin Ophthalmol 2013; 7:1829-41. [PMID: 24092962 PMCID: PMC3788681 DOI: 10.2147/opth.s50584] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
OBJECTIVE To compare the 3-year incidence of de novo ocular hypertension (OHT) after Descemet stripping automated endothelial keratoplasty (DSAEK) and penetrating keratoplasty (PK). For DSAEK, to evaluate predictors for OHT and 2-year outcomes after OHT development. METHODS This was a review of the prospective Singapore Corneal Transplant Study at a single tertiary referral center. Consecutive DSAEKs and PKs for Fuchs' endothelial dystrophy (FED) and pseudophakic bullous keratopathy (PBK) in eyes without pre-existing glaucoma were analyzed. OHT incidence after DSAEK and PK were compared using Kaplan-Meier survival analysis, and OHT risk factors identified using Cox proportional regression. OHT was defined: intraocular pressure (IOP) ≥ 24 mmHg or ≥ 10 mmHg from baseline. Secondary outcomes 2 years after OHT development in DSAEK were rates of glaucoma medical therapy failure, IOP success, graft failure and rejection, and best-spectacle corrected visual acuity (BSCVA). RESULTS There were 108 (96.4%) DSAEKs and 216 (96%) PKs. The 1-, 2- and 3-year de novo OHT incidence was not significantly different between DSAEK (36.1%, 47.2%, 47.2%, respectively) and PK (35.7%, 44.9%, 45.8%, respectively; P = 0.914). OHT incidence did not differ in subgroup analyses of multiple clinical variables (P > 0.1). OHT predictors after DSAEK were: fellow eye glaucoma (hazard ratio [HR] 3.20, P = 0.004), age <60 years (HR 2.41, P = 0.016), concurrent goniosynechiolysis (HR 3.29, P = 0.021), post-graft complications or procedures (HR 2.85, P = 0.006). Two years after OHT onset, 29.7% of DSAEKs failed glaucoma medical therapy requiring trabeculectomy. Complete and qualified IOP success was achieved in 23.5% and 76.5%, respectively. Graft failure developed in 9.8% and graft rejection in 5.9%. At 6 months, 1, and 2 years from OHT onset, 86.3%, 88.3%, and 92.1% achieved BSCVA 20/40, respectively. CONCLUSION DSAEK and PK have comparable OHT risks. A significant 30% of DSAEK eyes with OHT require filtration surgery. Effective IOP control and good graft and visual outcomes are achieved with treatment.
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Affiliation(s)
- Errol W Chan
- Department of Ophthalmology, National University Health System, Singapore
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Intraocular Pressure Monitoring Post Intravitreal Steroids: A Systematic Review. Surv Ophthalmol 2013; 58:291-310. [DOI: 10.1016/j.survophthal.2012.08.003] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 08/04/2012] [Accepted: 08/07/2012] [Indexed: 12/29/2022]
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Friedman DS, Holbrook JT, Ansari H, Alexander J, Burke A, Reed SB, Katz J, Thorne JE, Lightman SL, Kempen JH. Risk of elevated intraocular pressure and glaucoma in patients with uveitis: results of the multicenter uveitis steroid treatment trial. Ophthalmology 2013; 120:1571-9. [PMID: 23601801 DOI: 10.1016/j.ophtha.2013.01.025] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Revised: 01/09/2013] [Accepted: 01/11/2013] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE To report the 2-year incidence of raised intraocular pressure (IOP) and glaucomatous optic nerve damage in patients with uveitis randomized to either fluocinolone acetonide (FA) implants or systemic therapy. Secondarily, we sought to explore patient and eye characteristics associated with IOP elevation or nerve damage. DESIGN A randomized, partially masked trial in which patients were randomized to either FA implants or systemic therapy. PARTICIPANTS Patients aged ≥ 13 years with noninfectious intermediate, posterior, or panuveitis active within the prior 60 days for which systemic corticosteroids were indicated were eligible. METHODS Visual fields were obtained at baseline and every 12 months using the Humphrey 24-2 Swedish interactive threshold algorithm (SITA) fast protocol. Stereoscopic optic nerve photos were taken at baseline and at 3-, 6-, 12-, and 24-month follow-up visits. Masked examiners measured IOP at every study visit. MAIN OUTCOME MEASURES Glaucoma was diagnosed based on an increase in optic nerve cup-to-disc ratio with visual field worsening or increased cup-to-disc ratio alone, for cases where visual field change was not evaluable, because of missing data or severe visual field loss at baseline. RESULTS Most patients were treated as assigned; among those evaluated for glaucoma, 97% and 10% of patients assigned to implant and systemic treatment, respectively, received implants. More patients (65%) assigned to implants experienced an IOP elevation of ≥ 10 mmHg versus 24% assigned to systemic treatment (P<0.001). Similarly, 69% of patients assigned to the implant required IOP-lowering therapy versus 26% in the systemic group (P<0.001). Glaucomatous optic nerve damage developed in 23% versus 6% (P<0.001) of implant and systemic patients, respectively. In addition to treatment assignment, black race, use of IOP-lowering medications, and uveitis activity at baseline were associated with incident glaucoma (P<0.05). CONCLUSIONS Implant-assigned eyes had about a 4-fold risk of developing IOP elevation of ≥ 10 mmHg and incident glaucomatous optic neuropathy over the first 2 years compared with those assigned to systemic therapy. Central visual acuity was unaffected. Aggressive IOP monitoring with early treatment (often including early filtration surgery) is needed to avoid glaucoma when vision-threatening inflammation requires implant therapy. FINANCIAL DISCLOSURE(S) Proprietary or commercial disclosure may be found after the references.
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Affiliation(s)
- David S Friedman
- Dana Center for Preventive Ophthalmology, The Johns Hopkins University School of Medicine Wilmer Eye Institute, Baltimore, Maryland, USA
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Chennamaneni SR, Mamalis C, Archer B, Oakey Z, Ambati BK. Development of a novel bioerodible dexamethasone implant for uveitis and postoperative cataract inflammation. J Control Release 2013; 167:53-9. [DOI: 10.1016/j.jconrel.2013.01.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 12/30/2012] [Accepted: 01/05/2013] [Indexed: 11/29/2022]
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Tlucek PS, Folk JC, Orien JA, Stone EM, Mahajan VB. Inhibition of neovascularization but not fibrosis with the fluocinolone acetonide implant in autosomal dominant neovascular inflammatory vitreoretinopathy. ACTA ACUST UNITED AC 2013; 130:1395-401. [PMID: 22777573 DOI: 10.1001/archophthalmol.2012.1971] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVE To review the effect of the fluocinolone acetonide implant in subjects with autosomal dominant neovascular inflammatory vitreoretinopathy (ADNIV), an inherited autoimmune uveitis. METHODS A retrospective case series was assembled from patients with ADNIV who received fluocinolone acetonide implants. Visual acuity and features of ADNIV, including inflammatory cells, neovascularization, fibrosis, and cystoid macular edema, were reviewed. RESULTS Nine eyes of 5 related patients with ADNIV with uncontrolled inflammation were reviewed. Follow-up ranged from 21.7 to 56.7 months. Visual acuity at implantation ranged from 20/40 to hand motion. Preoperatively, 8 eyes had vitreous cells (a ninth had diffuse vitreous hemorrhage). Eight eyes had cystoid macular edema, 7 had an epiretinal membrane, and 3 had retinal neovascularization. Following implantation, vitreous cells resolved in all eyes and neovascularization regressed or failed to develop. Central macular thickness improved in 4 eyes. During the postoperative course, however, visual acuity continued to deteriorate, with visual acuity at the most recent examination ranging from 20/60 to no light perception. There was also progressive intraocular fibrosis and phthisis in 1 case. Four eyes underwent cataract surgery. Six of the 7 eyes without previous glaucoma surgery had elevated intraocular pressure at some point, and 3 of these required glaucoma surgery. CONCLUSIONS The fluocinolone acetonide implant may inhibit specific features of ADNIV such as inflammatory cells and neovascularization but does not stabilize long-term vision, retinal thickening, or fibrosis. All eyes in this series required cataract extraction, and more than half required surgical intervention for glaucoma. Further studies may identify additional therapies and any benefit of earlier implantation.
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Kumar S, Shah S, Deutsch ER, Tang HM, Danias J. Triamcinolone acetonide decreases outflow facility in C57BL/6 mouse eyes. Invest Ophthalmol Vis Sci 2013; 54:1280-7. [PMID: 23322580 DOI: 10.1167/iovs.12-11223] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To determine the effect of triamcinolone acetonide (TA) on outflow facility in mice. METHODS Animals received 20 μL of TA (40 mg/mL) suspension subconjunctivally either bilaterally or unilaterally and were euthanized after either 1 week or 3 weeks. Before mice were killed, IOP was measured with a rebound tonometer. Outflow facility was determined using simultaneous pressure and flow measurements. Another set of animals received bilateral injection of anecortave acetate (AA) with or without bilateral TA injection and their outflow facility was also determined. Myocilin expression was investigated in a subset of eyes using quantitative PCR (qPCR). RESULTS Outflow facility of eyes in animals receiving bilateral TA injection (TA(BL)) and TA-treated eyes of animals receiving unilateral injection (TA(UL)) was significantly decreased compared to naïve control eyes (C(naive)) after 1 week and 3 weeks of TA treatment (ANOVA P < 0.01, P < 0.001, respectively). Eyes treated with AA (with or without TA) had higher outflow facility than animals treated with TA (P < 0.05). IOP data did not show any significant difference between groups. qPCR analysis revealed significant decrease in myocilin expression in eyes receiving AA compared to naïve control and TA-treated eyes (ANOVA P < 0.001). CONCLUSIONS Steroid treatment significantly decreases outflow facility in C57BL/6 mice despite having small effect on IOP. This animal model can be useful for studying the pathogenesis of steroid-induced glaucoma.
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Affiliation(s)
- Sandeep Kumar
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, NY 11203, USA
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Cunningham ET, Goldstein DA, Zierhut M. Uveitis Treatment Trials—A Cross-study Perspective. Ocul Immunol Inflamm 2012; 20:63-7. [PMID: 22360435 DOI: 10.3109/09273948.2012.661297] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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