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      Case Report of a Family Affected by Stickler Syndrome in Which Rhegmatogenous Retinal Detachment Occurred in Five Eyes of Three Siblings

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          Abstract

          Purpose: Stickler syndrome is an autosomal dominant inherited disorder that is well known to be highly associated with the development of rhegmatogenous retinal detachment. In this study, we report the case of a family affected by Stickler syndrome in which rhegmatogenous retinal detachment developed in 5 eyes of 3 siblings. Case Series: For treatment, we performed vitreous surgery on 1 eye of the eldest son, and bilateral scleral buckling surgery on the 2 younger children. A good postoperative outcome was obtained on the 4 eyes that underwent scleral buckling surgery, yet the prognosis was poor on the 1 eye that underwent vitrectomy due to redetachment of the retina and corneal complication. Since vitreous surgery was quite difficult due to strong vitreoretinal adhesion, we created an artificial posterior vitreous detachment via the bimanual technique combined with encircling. For the scleral buckling surgery, broad scleral extrusion was needed to seal multiple retinal breaks. Conclusions: The findings of this study showed a high prevalence of rhegmatogenous retinal detachment in a single family with Stickler syndrome. In these cases, scleral buckling surgery was effective for treating the detached retina, and some prophylactic treatment, such as laser photocoagulation to prevent the occurrence of rhegmatogenous retinal detachment, should be considered for such cases in the future.

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          Most cited references14

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          HEREDITARY PROGRESSIVE ARTHRO-OPHTHALMOPATHY.

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            Clinical and Molecular genetics of Stickler syndrome.

            Stickler syndrome is an autosomal dominant disorder with characteristic ophthalmological and orofacial features, deafness, and arthritis. Abnormalities of vitreous gel architecture are a pathognomonic feature, usually associated with high myopia which is congenital and non-progressive. There is a substantial risk of retinal detachment. Less common ophthalmological features include paravascular pigmented lattice degeneration and cataracts. Non-ocular features show great variation in expression. Children with Stickler syndrome typically have a flat midface with depressed nasal bridge, short nose, anteverted nares, and micrognathia. These features can become less pronounced with age. Midline clefting, if present, ranges in severity from a cleft of the soft palate to Pierre-Robin sequence. There is joint hypermobility which declines with age. Osteoarthritis develops typically in the third or fourth decade. Mild spondyloepiphyseal dysplasia is often apparent radiologically. Sensorineural deafness with high tone loss may be asymptomatic or mild. Occasional findings include slender extremities and long fingers. Stature and intellect are usually normal. Mitral valve prolapse was reported to be a common finding in one series but not in our experience. The majority of families with Stickler syndrome have mutations in the COL2A1 gene and show the characteristic type 1 vitreous phenotype. The remainder with the type 2 vitreous phenotype have mutations in COL11A1 or other loci yet to be identified. Mutations in COL111A2 can give rise to a syndrome with the systemic features of Stickler syndrome but no ophthalmological abnormality.
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              Variation in the vitreous phenotype of Stickler syndrome can be caused by different amino acid substitutions in the X position of the type II collagen Gly-X-Y triple helix.

              Stickler syndrome is a dominantly inherited disorder characterized by arthropathy, midline clefting, hearing loss, midfacial hypoplasia, myopia, and retinal detachment. These features are highly variable both between and within families. Mutations causing the disorder have been found in the COL2A1 and COL11A1 genes. Premature termination codons in COL2A1 that result in haploinsufficiency of type II collagen are a common finding. These produce a characteristic congenital "membranous" anomaly of the vitreous of all affected individuals. Experience has shown that vitreous slit-lamp biomicroscopy can distinguish between patients with COL2A1 mutations and those with dominant negative mutations in COL11A1, who produce a different "beaded" vitreous phenotype. Here we characterize novel dominant negative mutations in COL2A1 that result in Stickler syndrome. Both alter amino acids in the X position of the Gly-X-Y triple-helical region. A recurrent R365C mutation occurred in two unrelated sporadic cases and resulted in the membranous vitreous anomaly associated with haploinsufficiency. In a large family with linkage to COL2A1, with a LOD score of 2.8, a unique L467F mutation produced a novel "afibrillar" vitreous gel devoid of all normal lamella structure. These data extend the mutation spectrum of the COL2A1 gene and help explain the basis for the different vitreous phenotypes seen in Stickler syndrome.
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                Author and article information

                Journal
                COP
                COP
                10.1159/issn.1663-2699
                Case Reports in Ophthalmology
                S. Karger AG
                1663-2699
                2018
                January – April 2018
                04 January 2018
                : 9
                : 1
                : 1-8
                Affiliations
                [_a] aDepartment of Ophthalmology, Osaka Medical College, Takatsuki-City, Japan
                [_b] bDepartment of Ophthalmology, Takatsuki Red Cross Hospital, Takatsuki-City, Japan
                Author notes
                *Tsunehiko Ikeda, MD, Department of Ophthalmology, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka 569-8686 (Japan), E-Mail tikeda@osaka-med.ac.jp
                Article
                485551 PMC5892342 Case Rep Ophthalmol 2018;9:1–8
                10.1159/000485551
                PMC5892342
                29643775
                a26476d5-2d1f-4221-9ac0-1524380c7b8e
                © 2018 The Author(s). Published by S. Karger AG, Basel

                This article is licensed under the Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC). Usage and distribution for commercial purposes requires written permission. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

                History
                : 25 August 2017
                : 22 November 2017
                Page count
                Figures: 3, Pages: 8
                Categories
                Case Report

                Vision sciences,Ophthalmology & Optometry,Pathology
                Rhegmatogenous retinal detachment,Prophylactic treatment,Vitreous surgery,Scleral buckling procedure,Stickler syndrome

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