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- W2899050802 abstract "Scope The purpose of this study is to identify and visualize the spatial distribution of proteins present in amyloid corneal deposits of TGFBI‐CD patients using Mass Spectrometry Imaging (MSI) and compare it with healthy control cornea. Corneal Dystrophies (CD) constitute a group of genetically inherited protein aggregation disorders that affects different layers of the cornea. With accumulated protein deposition, the cornea becomes opaque with decreased visual acuity. CD affecting the stroma and Bowman's membrane, is associated with mutations in transforming growth factor β‐induced ( TGFBI ) gene. Methods MALDI‐Mass Spectrometry Imaging (MSI) is performed on 2 patient corneas and is compared with 1 healthy control cornea using a 7T‐MALDI‐FTICR. Molecular images obtained are overlaid with congo‐red stained sections to visualize the proteins associated with the corneal amyloid aggregates. Results MALDI‐MSI provides a relative abundance and two dimensional spatial protein signature of key proteins (TGFBIp, Apolipoprotein A‐I, Apolipoprotein A‐IV, Apolipoprotein E, Kaliocin‐1, Pyruvate Kinase and Ras related protein Rab‐10) in the patient deposits compared to the control. This is the first report of the anatomical localization of key proteins on corneal tissue section from CD patients. This may provide insight in understanding the mechanism of amyloid fibril formation in TGFBI ‐corneal dystrophy." @default.
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- W2899050802 date "2018-11-15" @default.
- W2899050802 modified "2023-09-30" @default.
- W2899050802 title "Matrix‐Assisted Laser Desorption Ionization Mass Spectrometry Imaging of Key Proteins in Corneal Samples from Lattice Dystrophy Patients with <i>TGFBI</i> ‐H626R and <i>TGFBI</i> ‐R124C Mutations" @default.
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- W2899050802 doi "https://doi.org/10.1002/prca.201800053" @default.
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