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Evidence of autophagic vesicles in a patient with Lisch corneal dystrophy / Evidência de vesículas autofágicas em paciente com distrofia corneana de Lisch
Grau, Arturo E; González, Sergio; Zoroquiain, Pablo; González, Pablo A; Khaliliyeh, Daniela; Morselli, Eugenia; Cortés, Dennis.
  • Grau, Arturo E; Pontificia Universidad Católica de Chile. Ophthalmology Department. Santiago. CL
  • González, Sergio; Pontificia Universidad Católica de Chile. Pathology Department. Santiago. CL
  • Zoroquiain, Pablo; Pontificia Universidad Católica de Chile. Pathology Department. Santiago. CL
  • González, Pablo A; Pontificia Universidad Católica de Chile. Faculty of Biological Sciences. Molecular Genetics and Microbiology Department. Santiago. CL
  • Khaliliyeh, Daniela; Pontificia Universidad Católica de Chile. Ophthalmology Department. Santiago. CL
  • Morselli, Eugenia; Pontificia Universidad Católica de Chile. Santiago. CL
  • Cortés, Dennis; Pontificia Universidad Católica de Chile. Ophthalmology Department. Santiago. CL
Arq. bras. oftalmol ; 83(2): 146-148, Mar.-Apr. 2020. graf
Article in English | LILACS | ID: biblio-1088972
ABSTRACT
ABSTRACT Lisch corneal dystrophy is a rare corneal disease characterized by the distinctive feature of highly vacuolated cells. Although this feature is important, the nature of these vacuoles within corneal cells remains unknown. Here, we sought to analyze corneal cells from a patient diagnosed with Lisch dystrophy to characterize the vacuoles within these cells. Analyses using histopathology examination, confocal microscopy, and transmission electron microscopy were all consistent with previous descriptions of Lisch cells. Importantly, the vacuoles within these cells appeared to be autophagosomes and autolysosomes, and could be stained with an anti-microtubule-associated protein 1A/1B-light chain 3 (LC3) antibody. Taken together, these findings indicate that the vacuoles we observed within superficial corneal cells of a patient with Lisch corneal dystrophy constituted autophagosomes and autolysosomes; this finding has not been previously reported and suggests a need for further analyses to define the role of autophagy in this ocular disease.
RESUMO
RESUMO A distrofia corneana de Lisch é uma doença rara, caracterizada principalmente pela presença de células altamente vacuoladas. Embora esta característica seja importante, a natureza desses vacúolos dentro das células da córnea permanece des conhecida. Aqui, procuramos analisar as células da córnea de um paciente diagnosticado com distrofia de Lisch para caracte rizar os vacúolos dentro dessas células. Análises utilizando exame histopatológico, microscopia confocal e microscopia eletrônica de transmissão foram todas consistentes com descrições previas de células de Lisch. Importante, os vacúolos dentro dessas células pareciam ser autofagossomos e autolisossomos, e po deriam ser corados com um anticorpo proteico 1A/1B-cadeia leve 3 (LC3) da proteína anti-microtúbulo associado a microtúbulos. Em conjunto, esses achados indicam que os vacúolos observados nas células superficiais da córnea de um paciente com distrofia corneana de Lisch constituíram autofagossomos e autolisossomos. Esse achado não foi relatado anteriormente e sugere a necessidade de mais análises para definir o papel da autofagia nessa doença ocular.
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Full text: Available Index: LILACS (Americas) Main subject: Vacuoles / Corneal Dystrophies, Hereditary / Autophagosomes Limits: Adult / Female / Humans Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2020 Type: Article Affiliation country: Chile Institution/Affiliation country: Pontificia Universidad Católica de Chile/CL

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Full text: Available Index: LILACS (Americas) Main subject: Vacuoles / Corneal Dystrophies, Hereditary / Autophagosomes Limits: Adult / Female / Humans Language: English Journal: Arq. bras. oftalmol Journal subject: Ophthalmology Year: 2020 Type: Article Affiliation country: Chile Institution/Affiliation country: Pontificia Universidad Católica de Chile/CL