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      Pierre Robin sequence and keratoconus, a rare association Translated title: Síndrome de Pierre Robin y quearotocono, una rara asociación

      case-report

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          Abstract

          Abstract Pierre Robin sequence (PRS) is an inherited disorder that affects one in between 8,500 and 14,000 people and is characterized by a triad of clinical signs. These include micrognathia, glossoptosis and obstruction of the upper airway, typically associated with palatal cleft. PRS has also been associated with various ocular complications, including high congenital myopia, congenital glaucoma, and retinal detachment. Because of the clinical importance of PRS, it is critical to illustrate the features of the Robin sequence to clearly define its primary and secondary clinical signs. We describe a patient with PRS who developed keratoconus as a rare manifestation of the disease and its management.

          Translated abstract

          Resumen La secuencia de Pierre Robin (PRS) es una patología hereditaria que afecta a una de entre 8.500 y 14.000 personas y está caracterizada por una triada de signos. Estos incluyen micrognatia, glosoptosis y obstrucción de vías aéreas altas, típicamente asociados a labio leporino. PRS ha sido también relacionado con afectación oftalmológica, incluyendo miopía congénita, glaucoma congénito o desprendimiento de retina. Debida a la importancia clínica de la PRS, es fundamental describir las distintas características de la secuencia Pierre Robin, para así definir los signos principales y secundarios de la patología. Describimos el caso de una paciente con PRS que desarrolló queratocono como una extraña manifestación de la enfermedad.

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          Most cited references12

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          Keratoconus

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            Highly conserved non-coding elements on either side of SOX9 associated with Pierre Robin sequence.

            Pierre Robin sequence (PRS) is an important subgroup of cleft palate. We report several lines of evidence for the existence of a 17q24 locus underlying PRS, including linkage analysis results, a clustering of translocation breakpoints 1.06-1.23 Mb upstream of SOX9, and microdeletions both approximately 1.5 Mb centromeric and approximately 1.5 Mb telomeric of SOX9. We have also identified a heterozygous point mutation in an evolutionarily conserved region of DNA with in vitro and in vivo features of a developmental enhancer. This enhancer is centromeric to the breakpoint cluster and maps within one of the microdeletion regions. The mutation abrogates the in vitro enhancer function and alters binding of the transcription factor MSX1 as compared to the wild-type sequence. In the developing mouse mandible, the 3-Mb region bounded by the microdeletions shows a regionally specific chromatin decompaction in cells expressing Sox9. Some cases of PRS may thus result from developmental misexpression of SOX9 due to disruption of very-long-range cis-regulatory elements.
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              Keratoconus: An updated review

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                Author and article information

                Journal
                ijm
                Iberoamerican Journal of Medicine
                Iberoam J Med
                Hospital San Pedro (Logroño, La Rioja, Spain )
                2695-5075
                2695-5075
                2023
                : 5
                : 1
                : 46-50
                Affiliations
                [1] Valencia orgnameDr. Peset University Hospital Spain
                Article
                S2695-50752023000100006 S2695-5075(23)00500100006
                10.53986/ibjm.2023.0006
                bd21f81f-ac3c-4d92-ac17-02c5d0f645ce

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 29 December 2022
                : 15 September 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 12, Pages: 5
                Product

                SciELO Spain

                Categories
                Case Report

                Topografía corneal,Cornea,Síndrome de Pierre Robin,Queratocono,Corneal topography,Pierre Robin syndrome,Keratoconus

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