이준원 교수

Recent studies suggest that the intracoronary administration of bone marrow (BM)-derived mesenchymal stem cells (MSCs) may improve left ventricular function in patients with acute myocardial infarction (AMI). However, there is still argumentative for the safety and efficacy of MSCs in the AMI setting. We thus performed a randomized pilot study to investigate the safety and efficacy of MSCs in patients with AMI. Eighty patients with AMI after successful reperfusion therapy were randomly assigned

Targeted genome-editing technology using designed nucleases has been evolving rapidly, and its applications are widely expanding in research, medicine and biotechnology. Using this genome-modifying technology, researchers can precisely and efficiently insert, remove or change specific sequences in various cultured cells, micro-organisms, animals and plants. This genome editing is based on the generation of double-strand breaks (DSBs), repair of which modifies the genome through nonhomologous end

PURPOSE: To investigate the prevalence of a newly defined drusen type, pachydrusen, soft drusen, and subretinal drusenoid deposits in eyes with polypoidal choroidal vasculopathy and fellow eyes and the relationship between each drusen type and the choroidal thickness, vascular morphology, and hyperpermeability. METHODS: The 169 eyes of 90 patients with polypoidal choroidal vasculopathy were retrospectively reviewed. The prevalence of each drusen type was evaluated using color fundus photography

PURPOSE: To investigate the prevalence of pachydrusen, soft drusen, and subretinal drusenoid deposits in eyes with different neovascular age-related macular degeneration (nAMD) subtypes, determine the relationship between each drusen type and the choroidal thickness, and analyze the distinct features of each nAMD subtype according to the drusen type. METHODS: Medical records involving 454 eyes from 454 patients with nAMD were retrospectively reviewed. The prevalence of each drusen type and the c

PURPOSE: To analyze vitreoretinal findings, immunoglobulin clonality tests, and interleukin (IL) levels for diagnosing vitreoretinal lymphoma (VRL). METHODS: Forty-three patients who underwent diagnostic vitrectomy for suspected VRL were retrospectively reviewed. Of those patients finally diagnosed with VRL and nonlymphoma, ophthalmic evaluation and cytology results, IL-6 and IL-10 levels, and immunoglobulin heavy chain and immunoglobulin kappa light chain clonality assays were compared. RESULTS

sequencing identifies mutational signatures of vitreoretinal lymphoma

There is substantial evidence supporting the concept that a selective 5-HT₂(C) receptor modulator should provide benefit in the treatment of a variety of CNS disorders. Although research efforts have identified several promising 5-HT₂(C) receptor modulators that display high functional selectivity, further clinical efficacy and safety data are needed to prove their actual clinical utility. Therefore, the query for selectively acting 5-HT₂(C) receptor modulators is still ongoing.

In spectral-domain OCT, RNFL thickness was underestimated in eyes with increasing negative refraction power and overestimated with increasing positive refraction power.

Despite of the substantial potential of human-derived retinal organoids, the degeneration of retinal ganglion cells (RGCs) during maturation limits their utility in assessing the functionality of later-born retinal cell subtypes. Additionally, conventional analyses primarily rely on fluorescent emissions, which limits the detection of actual cell functionality while risking damage to the 3D cytoarchitecture of organoids. Here, an electrophysiological analysis is presented to monitor RGC developm

We argue the value of unsupervised metalearning and discuss the attendant necessity of suitable similarity, or distance, functions. We leverage the notion of diversity among learners used in ensemble learning to design a distance function for the clustering of learning algorithms. We revisit the mo st popular measures of diversity and show that only one of them, Classifier Output Difference (COD) is a metric. We then use COD to produce a clustering of 21 learning algorithms, and show how this cl

Purpose: We aimed to establish an efficient method for retinal ganglion cell (RGC) differentiation from human pluripotent stem cells (hPSCs) using defined factors. Methods: To define the contribution of specific signal pathways to RGC development and optimize the differentiation of hPSCs toward RGCs, we examined RGC differentiation in three stages: (1) eye field progenitors expressing the eye field transcription factors (EFTFs), (2) RGC progenitors expressing MATH5, and (3) RGCs expressing BRN3B

The CRISPR/Cas9 system easily edits target genes in various organisms and is used to treat human diseases. In most therapeutic CRISPR studies, ubiquitously expressed promoters, such as CMV, CAG, and EF1α, are used; however, gene editing is sometimes necessary only in specific cell types relevant to the disease. Therefore, we aimed to develop a retinal pigment epithelium (RPE)-specific CRISPR/Cas9 system. We developed a CRISPR/Cas9 system that operates only in retinal pigment epithelium (RPE) by