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Yu YS, Kim H, Kim KI, Baek SH. Epigenetic regulation of autophagy by histone-modifying enzymes under nutrient stress. Cell Death Differ 2023:10.1038/s41418-023-01154-9. [PMID: 36997734 DOI: 10.1038/s41418-023-01154-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/16/2023] [Accepted: 03/20/2023] [Indexed: 04/01/2023] Open
Abstract
Autophagy is an evolutionarily conserved catabolic process that is induced in response to various stress factors in order to protect cells and maintain cellular homeostasis by degrading redundant components and dysfunctional organelles. Dysregulation of autophagy has been implicated in several conditions such as cancer, neurodegenerative diseases, and metabolic disorders. Although autophagy has been commonly considered as a cytoplasmic process, accumulating evidence has revealed that epigenetic regulation within the nucleus is also important for regulation of autophagy. In particular, when energy homeostasis is disrupted, for instance due to nutrient deprivation, cells increase autophagic activity at the transcriptional level, thereby also increasing the extent of overall autophagic flux. The transcription of genes associated with autophagy is strictly regulated by epigenetic factors through a network of histone-modifying enzymes along with histone modifications. A better understanding of the complex regulatory mechanisms of autophagy could reveal potential new therapeutic targets for autophagy-related diseases. In this review, we discuss the epigenetic regulation of autophagy in response to nutrient stress, focusing on histone-modifying enzymes and histone modifications.
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Affiliation(s)
- Young Suk Yu
- Creative Research Initiatives Center for Epigenetic Code and Diseases, Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hyunkyung Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul, 02841, Republic of Korea.
- BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul, 02841, Republic of Korea.
| | - Keun Il Kim
- Department of Biological Sciences, Sookmyung Women's University, Seoul, 04310, Republic of Korea.
| | - Sung Hee Baek
- Creative Research Initiatives Center for Epigenetic Code and Diseases, Department of Biological Sciences, Seoul National University, Seoul, 08826, Republic of Korea.
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Kim D, Kim J, Yu YS, Kim YR, Baek SH, Won KJ. Systemic approaches using single cell transcriptome reveal that C/EBPγ regulates autophagy under amino acid starved condition. Nucleic Acids Res 2022; 50:7298-7309. [PMID: 35801910 PMCID: PMC9303372 DOI: 10.1093/nar/gkac593] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 06/17/2022] [Accepted: 06/24/2022] [Indexed: 11/14/2022] Open
Abstract
Autophagy, a catabolic process to remove unnecessary or dysfunctional organelles, is triggered by various signals including nutrient starvation. Depending on the types of the nutrient deficiency, diverse sensing mechanisms and signaling pathways orchestrate for transcriptional and epigenetic regulation of autophagy. However, our knowledge about nutrient type-specific transcriptional regulation during autophagy is limited. To understand nutrient type-dependent transcriptional mechanisms during autophagy, we performed single cell RNA sequencing (scRNAseq) in the mouse embryonic fibroblasts (MEFs) with or without glucose starvation (GS) as well as amino acid starvation (AAS). Trajectory analysis using scRNAseq identified sequential induction of potential transcriptional regulators for each condition. Gene regulatory rules inferred using TENET newly identified CCAAT/enhancer binding protein γ (C/EBPγ) as a regulator of autophagy in AAS, but not GS, condition, and knockdown experiment confirmed the TENET result. Cell biological and biochemical studies validated that activating transcription factor 4 (ATF4) is responsible for conferring specificity to C/EBPγ for the activation of autophagy genes under AAS, but not under GS condition. Together, our data identified C/EBPγ as a previously unidentified key regulator under AAS-induced autophagy.
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Affiliation(s)
- Dongha Kim
- Creative Research Initiatives Center for Epigenetic Code and Diseases, School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea.,Department of Anatomy, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Junil Kim
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark.,School of Systems Biomedical Science, Soongsil University, 369 Sangdo-Ro, Dongjak-Gu, Seoul 06978, Republic of Korea
| | - Young Suk Yu
- Creative Research Initiatives Center for Epigenetic Code and Diseases, School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Yong Ryoul Kim
- Creative Research Initiatives Center for Epigenetic Code and Diseases, School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Sung Hee Baek
- Creative Research Initiatives Center for Epigenetic Code and Diseases, School of Biological Sciences, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyoung-Jae Won
- Biotech Research and Innovation Centre (BRIC), University of Copenhagen, 2200 Copenhagen, Denmark
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Chen YH, Shen ZY, Huang HY, Yu YS, Ye WX, Hua F, Hu YQ, Yang BW, Shen H. [Comparison of early outcome between one-stage hybrid technique and frozen elephant thunk technique in the treatment of Stanford A aortic dissection involving the arch]. Zhonghua Yi Xue Za Zhi 2021; 101:3955-3960. [PMID: 34954998 DOI: 10.3760/cma.j.cn112137-20210531-01246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the early outcome of one-stage hybrid technique in the treatment of Stanford type-A aortic dissection involving the arch and compare its therapeutic efficacy with the classical frozen elephant trunk technique (FET). Methods: A total of 106 patients with Stanford type-A aortic dissection involving the arch in Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University from October 2015 to October 2019 was collected. All patients in this group were treated with one-stage hybrid technique (modified arch debranching technique) without deep hypothermia circulation. Meanwhile, 30 patients with Stanford type A dissection involving the arch who underwent FET from January 2014 to September 2015 were collected. The therapeutic effects of the two surgical methods were analyzed and compared. Results: The age [M (Q1, Q3)] of 106 patients in hybrid group was 49.0 (40.0, 55.0) years, including 89 males and 17 females. The age [M(Q1, Q3)] of 30 patients in FET group was 49.5 (41.5, 65.3) years, including 24 males and 6 females. The time [M(Q1, Q3)] of using ventilator in hybrid group was 56.0 (38.0, 72.0) h, which was shorter than 127.0 (92.0, 145.0) h in FET group (P<0.001). The incidence of cerebral infarction in hybrid group was 2.8% (3 cases), which was lower than 13.3% (4 cases) in FET group (P=0.042); the incidence of postoperative renal insufficiency in hybrid group was 7.5% (8 cases), which was lower than 23.3% (7 cases) in FET group (P=0.023); the ICU time [M (Q1, Q3)] in hybrid group was 8.0 (6.0, 10.0) d, which was shorter than 14.0 (8.3, 24.0) d in FET group (P<0.001). Conclusion: Compared with FET, one-stage hybrid technology is safer and more effective in the treatment of Stanford type A aortic dissection involving the arch. Its short-term therapeutic efficacy appears good.
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Affiliation(s)
- Y H Chen
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Z Y Shen
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - H Y Huang
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Y S Yu
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - W X Ye
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - F Hua
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - Y Q Hu
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - B W Yang
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
| | - H Shen
- Department of Cardiac and Vascular Surgery, 1st Affiliated Hospital of Soochow University, Suzhou 215006, China
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Choi WJ, Jo DH, Kang HJ, Shin HY, Yu YS, Kim JH. Development of New Solitary Retinoblastoma Tumors during and after Chemotherapy. Korean J Ophthalmol 2021; 35:73-79. [PMID: 33596616 PMCID: PMC7904413 DOI: 10.3341/kjo.2020.0115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/09/2020] [Indexed: 11/23/2022] Open
Abstract
PURPOSE To review the occurrence of new solitary tumors during and after intravenous chemotherapy against retinoblastoma. METHODS From 115 eyes of 78 patients with a diagnosis of intraocular retinoblastoma who underwent intravenous chemotherapy and focal treatment without prior treatment, patient demographics, age at diagnosis, laterality, classification (Reese-Ellsworth and International Classification of Retinoblastoma), and treatment options were recorded. In addition, the occurrence of small tumors during and after chemotherapy was documented with a detailed review of medical records and fundus photographs. RESULTS Of a total of 115 eyes of 78 consecutive patients, new solitary tumors were observed in 50 eyes (50 / 115, 43%) of 40 patients (40 / 78, 51%). Multinominal logistic regression analyses showed that age at diagnosis (before 1 year) and vitreal seeding at diagnosis were linked to the development of isolated and miliary tumors, respectively. Kaplan-Meier analyses demonstrated that all small tumors developed with 20 months from the start of chemotherapy. Twenty-eight eyes (28 / 34, 82%) were salvaged with additional focal treatment in 34 eyes with isolated tumors. CONCLUSIONS Small tumors were observed during and after chemotherapy against retinoblastoma in patients who underwent intravenous chemotherapy and focal treatment. It is necessary to promptly identify and address small tumors for the preservation of eyeball and vision.
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Affiliation(s)
- Won Jong Choi
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Hyun Jo
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul, Korea
| | - Hyoung Jin Kang
- Department of Pediatrics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Hee Young Shin
- Department of Pediatrics, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.,Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
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Jung EH, Yang HK, Hwang JM, Seo JM, Kim KG, Khwarg SI, Yu YS, Kim SJ. Change in the eye position under general anesthesia in children with intermittent exotropia. J AAPOS 2021; 25:5.e1-5.e7. [PMID: 33662588 DOI: 10.1016/j.jaapos.2020.09.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 08/17/2020] [Accepted: 09/06/2020] [Indexed: 11/27/2022]
Abstract
PURPOSE To evaluate the eye position in subjects with intermittent exotropia and normal subjects under general anesthesia (GA) using the strabismus photo analyzer. METHODS This retrospective case-control study included 78 subjects with intermittent exotropia and 25 normal control subjects who underwent epiblepharon surgery. Eye position under GA was assessed using the strabismus photo analyzer, based on eye models generated from corneal lights and limbus in pre- and post-anesthesia images. Eye positions under GA in the control and intermittent exotropia groups were compared. Preoperative angle of deviation was also compared with amount of change in eye position under GA in the intermittent exotropia group. RESULTS Eye position under GA was more divergent in subjects with intermittent exotropia than in controls (P = 0.008). The amount of change in eye position under GA was correlated with the preoperative angle of deviation (r2 = 0.47; P < 0.001). In small preoperative exodeviations, the change in eye position was primarily more divergent, whereas in large exodeviations, a convergent tendency-less exotropic compared with the preoperative angle of exodeviation-was observed. CONCLUSIONS In subjects with small preoperative exodeviations, there was a tendency for eye position to become more divergent after GA; in those with large exodeviations, there was less exotropia after GA.
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Affiliation(s)
- Eun Hye Jung
- Department of Ophthalmology, Nowon Eulji Medical Center, Eulji University, Seoul, Korea; Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Hee Kyung Yang
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea; Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jeong-Min Hwang
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea; Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jong-Mo Seo
- Department of Electrical and Computer Engineering, Seoul National University, Seoul, Korea
| | - Kwang Gi Kim
- Department of Biomedical Engineering, Gil Medical Center, Gachon University, Incheon, Korea
| | - Sang In Khwarg
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea; Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea; Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea; Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea.
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Choe S, Yoon CH, Kim MK, Hyon JY, Yu YS, Oh JY. Spontaneous regression of congenital corneal opacity. Graefes Arch Clin Exp Ophthalmol 2019; 258:359-366. [PMID: 31768679 DOI: 10.1007/s00417-019-04526-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 10/22/2019] [Accepted: 10/28/2019] [Indexed: 11/25/2022] Open
Abstract
PURPOSE To determine the incidence of spontaneous regression of congenital corneal opacity (CCO) and identify clinical factors associated with the regression. METHODS Medical records and anterior segment photographs were reviewed of 57 eyes in 35 patients with CCO that were not related to congenital glaucoma, tumors, infection, trauma, or metabolic disorders and were followed up without corneal transplantation for longer than one year at Seoul National University Hospital. Spontaneous regression of corneal opacity was defined as a decrease in corneal opacity significant enough for visual axis clearance. Data on demographics, systemic, and ocular characteristics were collected and compared between patients who had spontaneous regression of CCO and those who did not. RESULTS Spontaneous regression of corneal opacity developed in 32 eyes (22 patients, 56.1%) out of 57 CCO eyes (35 patients) at the mean 8.2 ± 5.4 months of age (the median 6.7 months). Absence of combined ocular anomalies such as iris anomaly, lens opacity, and peripheral corneal vascularization was significantly associated with the regression of opacity. CONCLUSIONS Corneal opacity can spontaneously regress in 56.1% of eyes with CCO during the first year of life. Careful follow-up with amblyopia management can be one of treatment options for CCO.
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Affiliation(s)
- Sooyeon Choe
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Chang Ho Yoon
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
- Department of Ophthalmology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Joon Young Hyon
- Department of Ophthalmology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
- Department of Ophthalmology, Seoul National University Bundang Hospital, 82, Gumi-ro 173 Beon-gil, Bundang-gu, Seongnam, 13620, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
- Department of Ophthalmology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, Korea
| | - Joo Youn Oh
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Korea.
- Department of Ophthalmology, Seoul National University College of Medicine, 103 Daehak-ro, Jongno-gu, Seoul, 03080, Korea.
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Jung EH, Lee BJ, Yu YS, Kim JH. Postnatal ophthalmological characteristics in patients with congenital cataract diagnosed by fetal ultrasonography. J Matern Fetal Neonatal Med 2019; 34:3386-3392. [PMID: 31735114 DOI: 10.1080/14767058.2019.1685963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE To evaluate the findings of postnatal ophthalmological examinations in patients diagnosed with cataracts by prenatal fetal sonography. METHODS We retrospectively identified patients diagnosed with fetal cataract without other ocular abnormalities using antenatal ultrasound. We analyzed data including the patients' family history, the presence of metabolic or systemic disease-associated cataracts, gestational age at diagnosis, fetal sonography reports, and the results of postnatal ophthalmological examinations. RESULTS In total, eight patients were diagnosed with cataracts by prenatal fetal ultrasonography, and all these patients showed mild to severe degrees of cataract after birth. Patients showed hyperechoic opacity of the lens in the available images. The mean gestational age at diagnosis was 26 ± 3 weeks (range, 22-28 weeks), and three patients (37.5%) had a family history of congenital cataract. All patients, except one patient who had patent ductus arteriosus, showed no systemic abnormalities associated with cataracts on postnatal evaluation. Six (75.0%) were diagnosed with bilateral cataracts after birth, and of these, two patients had been diagnosed with unilateral left cataract prenatally. Postnatal ophthalmological examination revealed that all patients showed opacities involving the nucleus of the lens and three patients (37.5%) had associated abnormalities of microcornea or microphthalmia, which were not diagnosed antenatally. CONCLUSION In all our subjects, the lens opacities on prenatal fetal sonography were diagnosed postnatally as cataracts involving the nucleus. A careful postnatal examination is essential to detect the presence of associated ocular abnormalities such as microcornea and/or microphthalmia and cataract in the contralateral eye in patients with congenital cataract.
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Affiliation(s)
- Eun Hye Jung
- Department of Ophthalmology, Nowon Eulji Medical Center, Eulji University, Seoul, Republic of Korea.,Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Byung Joo Lee
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Ophthalmology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea.,Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Ophthalmology, Seoul National University Hospital, Seoul, Republic of Korea
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Abstract
BACKGROUND To describe factors affecting the prognosis after operation for recurrent intermittent exotropia (X[T]) in children. METHODS Clinical records of 50 patients who underwent operation for recurrent X(T) by a single surgeon were reviewed. The age at diagnosis of X(T), and first and second operations, deviation angle at distance and near, surgical method, concurrent vertical strabismus, stereoacuity, and Worth's Four Dot (W4D) examination before reoperation were analyzed, along with the postoperative deviation angle. A successful surgical outcome was defined as orthophoria, esodeviation ≤ 5 prism diopters, or exodeviation ≤ 10 prism diopters at distance. RESULTS Among the 50 recurrent exotropes who underwent surgery and were followed up for more than 1 year postoperatively, 13 showed recurrent exotropia and 1 showed consecutive esotropia. The mean age at reoperation was 8.49 ± 2.19 years, and the mean duration of postoperative follow-up was 27.78 ± 12.02 months. Good near fusion before reoperation was a significant factor in the success of surgery (P = 0.006). Smaller postoperative deviation angle measured immediately and 2 months after surgery were related to smaller final deviation angle (P = 0.027 and P = 0.022, respectively). CONCLUSION Peripheral suppression lowers the success rate of operation for recurrent X(T) in children. Overcorrection rather than orthotropia should be the target of immediate postoperative deviation angle. Peripheral suppression status and immediate and 2-month postoperative deviation angle may be important clues for predicting the final result of operation for recurrent X(T).
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Affiliation(s)
- Ji Ah Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Seong Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
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Choi SH, Kim YD, Yu YS, Kim MK, Choi HJ. Reply. Am J Ophthalmol 2019; 202:152-153. [PMID: 31014541 DOI: 10.1016/j.ajo.2019.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 02/13/2019] [Accepted: 02/13/2019] [Indexed: 10/27/2022]
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Park MS, Yoon CH, Kim YW, Lee HJ, Yu YS, Oh JY. Progressive Intrascleral Epithelial Cyst With Intracorneal Extension. J Pediatr Ophthalmol Strabismus 2019; 56:e20-e23. [PMID: 30907973 DOI: 10.3928/01913913-20190213-02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Accepted: 01/14/2019] [Indexed: 11/20/2022]
Abstract
The authors report a case of primary sclerolimbal cyst with corneal extension in a 3-year-old boy. The cyst enlarged and dissected into the cornea over time. Surgical excision with tectonic allograft was performed. Preoperative, intraoperative, and postoperative anterior segment findings were shown, and results from histologic and cytologic assays were presented. [J Pediatr Ophthalmol Strabismus. 2019;56:e20-e23.].
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Lee HJ, Yu YS, Kim SJ. Long-term surgical outcomes of patients with consecutive exotropia. Graefes Arch Clin Exp Ophthalmol 2019; 257:1037-1044. [DOI: 10.1007/s00417-019-04293-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 12/02/2018] [Accepted: 12/10/2018] [Indexed: 10/27/2022] Open
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Choi SH, Kim YD, Yu YS, Kim MK, Choi HJ. Long-Term Outcome of Nd:YAG Laser Posterior Capsulotomy in Children: Procedural Strategies and Visual Outcome. Am J Ophthalmol 2019; 197:121-127. [PMID: 30267697 DOI: 10.1016/j.ajo.2018.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 09/14/2018] [Accepted: 09/17/2018] [Indexed: 11/15/2022]
Abstract
PURPOSE To evaluate the long-term outcome of neodymium:yttrium-aluminum-garnet (Nd:YAG) laser posterior capsulotomy after cataract surgery in children. DESIGN Retrospective case series. METHODS Electronic medical records of pediatric patients who underwent Nd:YAG laser posterior capsulotomy between January 1, 2008, and October 31, 2012, and followed up for more than 5 years were reviewed. RESULTS Thirty-one eyes of 25 patients were included. Only compliant patients assessed during slit-lamp examination and anterior segment photography underwent laser treatment. The mean age at the time of initial laser treatment was 9.04 ± 3.51 years (minimum 56 months), and the mean interval between cataract surgery and initial laser treatment was 28.1 ± 22.1 months. Posterior capsular openings were successfully made in 26 (83.9%) eyes with a single attempt and in 3 (9.7%) eyes with a second attempt. Overall success rate was 93.5%. The logMAR best-corrected visual acuity was significantly improved from 0.61 ± 0.36 to 0.19 ± 0.25 at 1 month posttreatment (P < .0001) and well maintained, at least for 5 years of follow-up, without serious complications. The recurrence of posterior capsular opacity was observed in 7 (24.1%) eyes, which was successfully managed by repeated laser procedure or surgical capsulectomy. CONCLUSIONS By selecting compliant patients and repeated attempts, Nd:YAG laser posterior capsulotomy can be successfully performed in a pediatric population without serious complications. Laser treatment is also a good option for managing recurred posterior capsular opacity. Restored visual acuity can be maintained for at least 5 years.
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Affiliation(s)
- Se Hyun Choi
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, South Korea
| | - Yong Dae Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, South Korea
| | - Hyuk Jin Choi
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, South Korea; Department of Ophthalmology, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, South Korea.
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Lee HJ, Kim JA, Kim SJ, Yu YS. Relation between preoperative hyperopia and surgical outcome in infantile esotropia. Int J Ophthalmol 2018; 11:1963-1967. [PMID: 30588431 DOI: 10.18240/ijo.2018.12.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 02/07/2018] [Indexed: 11/23/2022] Open
Abstract
AIM To evaluate the relation between preoperative hyperopia and surgical outcomes of infantile esotropia in patients younger than 24 months of age. METHODS Medical records of patients who underwent bilateral medial rectus muscle recession for infantile esotropia between November 1, 2002 and December 1, 2011 were retrospectively reviewed. Patients were divided into two groups according to the degree of preoperative hyperopia. Group I had less than +3.0 diopter (D) of hyperopia and group II had between +3.0 and +5.0 D of hyperopia. Postoperative alignments were evaluated 1wk, 3, 6mo, and 1y after surgery. Following the 1-year postoperative visit, patients were monitored yearly. Relationships between preoperative factors including hyperopia and postoperative outcomes were evaluated. RESULTS Forty-six patients were included, with 33 patients in group I and 13 patients in group II. The preoperative mean refractive error was +0.88 D in group I and +3.45 D in group II. Surgical outcomes were not significantly different between groups at any postoperative time point examined. Cumulative probability of surgical success, prevalence of inferior oblique overaction, dissociated vertical deviation, and re-operation rate were not significantly different between groups. CONCLUSION Preoperative moderate hyperopia (less than +5.0 D) did not affect the surgical outcome of infantile esotropia. Therefore, the surgical correction of esotropia should be considered when the angle of esodeviation is unchanged following hyperopia correction, even in children with moderate hyperopia.
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Affiliation(s)
- Haeng Jin Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul 110-744, South Korea
| | - Jeong-Ah Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul 110-744, South Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul 110-744, South Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul 110-744, South Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul 110-744, South Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul 110-744, South Korea
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Xu YJ, Quan JJ, Shi KR, Yu YS. [Mechanisms of fosfomycin resistance of extended-spectrum β-lactamases-producing Escherichia coli and Klebsiella pneumoniae]. Zhonghua Yi Xue Za Zhi 2018; 98:122-126. [PMID: 29343037 DOI: 10.3760/cma.j.issn.0376-2491.2018.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the in vitro activity of fosfomycin to extended-spectrum β-lactamases (ESBLs)-producing Escherichia coli and Klebsiella pneumoniae and to explore the mechanisms of fosfomycin resistance. Methods: A total of 1 052 ESBLs-producing E. coli(ESBL-EC) and K. pneumoniae(ESBL-KP) isolates were collected from bloodstream infections of 28 hospitals of 22 provinces and municipalities, which were stored by our laboratory.Minimum inhibitory concentrations (MICs) of fosfomycin against these clinical isolates were determined by agar dilution methods according to the Clinical and Laboratory Standards Institute (CLSI)(2015). The genes related to fosfomycin resistance were confirmed by Polymerase Chain Reaction (PCR) and sequencing. Results: The susceptibility rates of ESBL-EC and ESBL-KP isolates to fosfomycin were 91.3% (818/896) and 91.7% (143/156), respectively. A total of 91 fosfomycin-non-susceptible isolates were detected, of which 73 (80.2%) isolates carried fosA3 genes.Amongst 18 fosA3-negative isolates, 16 isolates were detected to have chromosomal mutations or insertion inactivation, while the rest two isolates had not been detected any resistant mechanisms. Conclusions: Fosfomycin shows great in vitro antimicrobial activity to ESBL-EC and ESBL-KP. The primary mechanism of fosfomycin-non-susceptible isolates is fosA3 gene.Chromosomal mutations may also involve in the fosfomycin resistance.
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Affiliation(s)
- Y J Xu
- Department of Infectious Diseases of Sir Run Run Shaw Hospital, the Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310016, China
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Abstract
PURPOSE To compare the surgical outcomes between pre- and full-term patients with exotropia and to examine the factors associated with surgical outcomes. METHODS This retrospective study included 48 pre- and 432 full-term patients with basic-type exotropia who underwent unilateral or bilateral lateral rectus muscle (ULR or BLR) recession. Preoperative characteristics and surgical outcomes were compared between the pre- and full-term infants. Additionally, factors affecting the surgical outcomes were evaluated in all patients. RESULTS The preoperative characteristics were significantly different between the pre- and full-term groups in terms of neurodevelopmental disabilities (p = 0.020). There were no significant differences between the pre- and full-term groups in terms of the success, overcorrection, and recurrence rates after the mean follow-up period of 34.6 ± 13.9 months (p = 0.697). The major cause of surgical failure was recurrence in both groups. Pre-term birth was not a risk factor for overcorrection and recurrence. However, regardless of the pre- or full-term birth status, the presence of neurodevelopmental disabilities significantly affected final overcorrection (p = 0.004). CONCLUSIONS Pre-term patients with exotropia showed similar surgical outcomes to full-term controls. The presence of neurodevelopmental disabilities was a risk factor for final overcorrection.
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Affiliation(s)
- Eun Hye Jung
- Department of Ophthalmology, Chuncheon Sacred Heart Hospital, Chuncheon, Korea
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
- * E-mail:
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Lee HJ, Kim SJ, Yu YS. Long-term Outcomes After Same Amount of Bilateral Rectus Muscle Recession for Intermittent Exotropia With the Same Angle of Deviation. J Pediatr Ophthalmol Strabismus 2018; 55:319-325. [PMID: 29913026 DOI: 10.3928/01913913-20180329-02] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Accepted: 02/02/2018] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate long-term outcomes of homogenous bilateral rectus recession in patients with the same preoperative angle of deviation in intermittent exotropia and investigate factors associated with surgical outcomes. METHODS In this retrospective review, patients with the same preoperative angle of deviation who underwent bilateral 6-mm lateral rectus recession between January 2008 and January 2014 were observed for 2 or more years. Patients were classified into two groups based on deviation angle: success (orthophoria or exodeviation < 10 prism diopters [PD]) or recurrence (exodeviation ≥ 10 PD). Preoperative and postoperative ophthalmologic factors were compared between groups. RESULTS The success and recurrence groups contained 50 and 49 patients, respectively. Preoperative maximum angle of deviation was 29.0 ± 1.8 PD at distance in the success group and 28.9 ± 1.8 PD in the recurrence group. Deviation at the 2-year follow-up was 3.7 ± 3.7 and 18.3 ± 5.3 PD in the success and recurrence groups, respectively (P < .001). Preoperative factors were not significantly different between groups except for presence of lateral incomitance; success group patients presented more lateral incomitance (P = .035). The success group also presented more esodeviation just after the operation and showed a more stable course during follow-up. Surgical outcomes of patients with 10 PD or more of esodeviation 1 week postoperatively were significantly more favorable than patients with less than 10 PD of esodeviation (P = .027, log-rank test). CONCLUSIONS Presence of lateral incomitance and early postoperative overcorrection were significantly associated with favorable surgical outcome and should be considered when planning intermittent exotropia surgery. [J Pediatr Ophthalmol Strabismus. 2018;55(5):319-325.].
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Kim YJ, Jeoung JW, Kim MK, Park KH, Yu YS, Oh JY. Clinical features and outcome of corneal opacity associated with congenital glaucoma. BMC Ophthalmol 2018; 18:190. [PMID: 30068309 PMCID: PMC6090947 DOI: 10.1186/s12886-018-0865-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 07/20/2018] [Indexed: 12/28/2022] Open
Abstract
Background To investigate the clinical features of corneal opacity and the surgical outcome of penetrating keratoplasty (PK) in eyes with congenital glaucoma. Methods A retrospective review was made of the records from 320 eyes of 193 patients who were diagnosed with congenital glaucoma between January 1981 and January 2016. Anterior segment photographs at disease presentation were examined for the presence and severity of corneal opacity. Data on patient demographics, intraocular pressure (IOP), ocular and systemic comorbidities, ocular surgery and its outcome were collected. Results Overall, corneal opacification was observed in 248 of 320 eyes (77.5%). Out of 248 eyes with corneal opacification, 53 eyes had Haab striae alone, and 195 eyes presented with either nebulomacular corneal opacity (128 eyes, iris details visible through opacity) or leukomatous corneal opacity (67 eyes, iris details invisible through opacity). In 12 eyes with severe leukomatous corneal opacity, PK was performed at the mean age of 18.6 months (range 4–57 months). The grafts failed in 6 eyes (50%) due to endothelial rejection (4 eyes) or graft infection (2 eyes) during the mean 80.6 months of follow-up (range 15–228 months). The median survival time was 36 months. The graft failure was significantly associated with smaller corneal diameter at the time of surgery, but not with the age, IOP, combined aniridia, simultaneous glaucoma or lens surgery. Conclusion Congenital glaucoma was combined with corneal opacity in 77.5%. The corneal transplant survival was 50% in eyes with congenital glaucoma and total corneal opacity.
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Affiliation(s)
- Yu Jeong Kim
- Laboratory of Ocular Regenerative Medicine and Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, Korea.,Department of Ophthalmology, Hanyang University Hospital, Hanyang University College of Medicine, Seoul, Korea
| | - Jin Wook Jeoung
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Mee Kum Kim
- Laboratory of Ocular Regenerative Medicine and Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, Korea.,Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Ki Ho Park
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea
| | - Joo Youn Oh
- Laboratory of Ocular Regenerative Medicine and Immunology, Seoul Artificial Eye Center, Seoul National University Hospital Biomedical Research Institute, Seoul, Korea. .,Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul, 110-744, Korea.
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Liu ZY, Wang GQ, Zhu LP, Lyu XJ, Zhang QQ, Yu YS, Zhou ZH, Liu YB, Cai WP, Li RY, Zhang WH, Zhang FJ, Wu H, Xu YC, Lu HZ, Li TS. [Expert consensus on the diagnosis and treatment of cryptococcal meningitis]. Zhonghua Nei Ke Za Zhi 2018; 57:317-323. [PMID: 29747285 DOI: 10.3760/cma.j.issn.0578-1426.2018.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Cryptococcal meningitis is a common and refractory central nervous system infection, with high rates of mortality and disability. The experts of the Society of Infectious Diseases of Chinese Medical Association have reached this consensus after a thorough discussion. Based on the current situation of cryptococcal meningitis in China, the management of cryptococcal meningitis includes 6 aspects: introduction, microorganism identification, clinical manifestations and diagnosis, principles of antifungal therapy, treatment of refractory and recurrent meningitis, treatment of intracranial hypertension. There is not a separate consensus on human immunodeficiency virus (HIV) infection in patients with cryptococcal meningitis. This article focuses on different antifungal regimens and reducing intracranial pressure by reference to Infectious Disease Society of America (IDSA) guidelines. The importance of early diagnosis, combined long-term antifungal therapy, control of intracranial hypertension are emphasized.
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Affiliation(s)
- Z Y Liu
- Department of Infectious Diseases, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Choi YJ, Kim TW, Kim S, Choung H, Lee MJ, Kim N, Khwarg SI, Yu YS. Effects on Periocular Tissues after Proton Beam Radiation Therapy for Intraocular Tumors. J Korean Med Sci 2018; 33:e120. [PMID: 29651818 PMCID: PMC5897156 DOI: 10.3346/jkms.2018.33.e120] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 02/20/2018] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND To present our experience on orbital and periorbital tissue changes after proton beam radiation therapy (PBRT) in patients with intraocular tumors, apart from treatment outcomes and disease control. METHODS Medical records of 6 patients with intraocular tumors who had been treated with PBRT and referred to oculoplasty clinics of two medical centers (Seoul National University Hospital and Seoul Metropolitan Government-Seoul National University Boramae Medical Center) from October 2007 to September 2014 were retrospectively reviewed. The types of adverse effects associated with PBRT, their management, and progression were analyzed. In anophthalmic patients who eventually underwent enucleation after PBRT due to disease progression, orbital volume (OV) was assessed from magnetic resonance (MR) images using the Pinnacle3 program. RESULTS Among the six patients with PBRT history, three had uveal melanoma, and three children had retinoblastoma. Two eyes were treated with PBRT only, while the other four eyes ultimately underwent enucleation. Two eyes with PBRT only suffered from radiation dermatitis and intractable epiphora due to canaliculitis or punctal obstruction. All four anophthalmic patients showed severe enophthalmic features with periorbital hollowness. OV analysis showed that the difference between both orbits was less than 0.1 cm before enucleation, but increased to more than 2 cm³ after enucleation. CONCLUSION PBRT for intraocular tumors can induce various orbital and periorbital tissue changes. More specifically, when enucleation is performed after PBRT due to disease progression, significant enophthalmos and OV decrease can develop and can cause poor facial cosmesis as treatment sequelae.
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Affiliation(s)
- Youn Joo Choi
- Department of Ophthalmology, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea
| | - Tae Wan Kim
- Department of Ophthalmology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
- Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Korea
| | - Suzy Kim
- Department of Radiation Oncology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
| | - Hokyung Choung
- Department of Ophthalmology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
- Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Korea.
| | - Min Joung Lee
- Department of Ophthalmology, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Namju Kim
- Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Korea
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Sang In Khwarg
- Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
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Lee BJ, Lee SM, Kim JH, Yu YS. Predictability of formulae for intraocular lens power calculation according to the age of implantation in paediatric cataract. Br J Ophthalmol 2018; 103:106-111. [DOI: 10.1136/bjophthalmol-2017-311706] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 03/10/2018] [Indexed: 12/15/2022]
Abstract
AimsTo analyse the predictability of diverse intraocular lens (IOL) power calculation formulae in paediatric patients with congenital cataract.MethodsThe medical records of patients who underwent cataract surgery and posterior chamber IOL implantation (in-the-bag) for congenital cataract before 17 years of age were reviewed retrospectively. Target refractions calculated by Sanders-Retzlaff-Kraff (SRK)/II, SRK/T and Hoffer-Q formulae were compared with the actual refraction. Patients were subgroup according to the age at IOL implantation (age group 0–24 months, 25–60 months, 61–120 months, 121–203 months), and we compared mean prediction error (PE) and mean absolute error (AE) for each formula. Corrected AE was obtained by linear regression analysis.ResultsTotally 481 eyes were included in the final analysis. Both SRK/II and SRK/T yielded the lowest mean AE in the age group 0–24 months and SRK/II yielded the lowest mean AE in the age group 25–60 months. For every formula, the mean PE was positive during the first five years of age, which converged to zero according to age as IOL implantation increases. The tendency for immediate postoperative overcorrection in younger patients (<6 years) could be improved by corrected formulae based on the linear regression equation.ConclusionsPatients with congenital cataract who underwent IOL implantation within 5 years of age showed higher AE than the older ones did. Among the three formulae evaluated, SRK/II consistently provided the best predictive result in these patients. For patients aged >10 years, all three formulae showed favourable predictive abilities.
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Lee HJ, Kim JH, Kim SJ, Yu YS. Long-term Lens Complications Following Removal of Persistent Pupillary Membrane. Korean J Ophthalmol 2018; 32:103-107. [PMID: 29560620 PMCID: PMC5906394 DOI: 10.3341/kjo.2017.0069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 05/02/2017] [Indexed: 11/23/2022] Open
Abstract
PURPOSE We evaluated the long-term surgical outcome and lens complications in children with persistent pupillary membrane following removal using vitreous scissors. METHODS Patients diagnosed with persistent pupillary membrane who received surgical treatment from 1987 to 2012 were retrospectively reviewed. The removal was performed using vitreous scissors after instillation of miotics. The minimum follow-up period after surgery was four years. Factors of age, sex, visual acuity, refractive errors, and complications during or after surgery were evaluated. RESULTS A total of 32 eyes of 26 patients were included. The mean age at the initial visit was 22.6 ± 34.7 (range, 0.9 to 141.2) months, and the mean age at surgery was 43.7 ± 36.0 (range, 1.0 to 142.5) months. There were no intraoperative complications using vitreous scissors, and all lesions were completely removed. After a mean follow-up period of 6.5 ± 3.3 (range, 4.0 to 14.8) years, the best corrected visual acuity at the final visit was 0.6 ± 0.9 logarithm of the minimum angle of resolution, and two eyes (6.3%) presented with lens opacity during follow-up. CONCLUSIONS In children with persistent pupillary membrane, there were no intraoperative complications, and only two patients presented with lens change during the long-term postoperative follow-up period. Surgical removal should be considered a safe and effective treatment for patients with visually significant persistent pupillary membrane.
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Affiliation(s)
- Haeng Jin Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Seong Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
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Jung EH, Kim SJ, Yu YS. Comparison of the characteristics of patients with intermittent exotropia according to response to diagnostic monocular occlusion. Jpn J Ophthalmol 2018; 62:243-248. [PMID: 29383541 DOI: 10.1007/s10384-018-0567-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Accepted: 12/17/2017] [Indexed: 11/26/2022]
Abstract
PURPOSE To compare the characteristics of intermittent exotropia patients according to their response to the diagnostic monocular occlusion test. STUDY DESIGN Retrospective study. METHODS A retrospective review was performed of 141 patients with intermittent exotropia who had taken a monocular occlusion test before surgery. We classified the patients into 3 groups based on the response to monocular occlusion. The increase group was defined as those patients having an increase in deviation of ≥ 5 prism diopters (PD) after monocular occlusion as compared with the maximum measured angle. The decrease group was defined as those patients having a decrease in deviation of ≥ 5 PD. Otherwise, patients were classified as having no change. The patients' characteristics were compared among the groups. RESULTS At distance fixation, 9 patients (6.5%) were classified as increase, 92 patients (66.7%) as no change, and 37 patients (26.8%) as decrease after monocular occlusion. At near fixation, 50 patients (35.5%) were classified as increase, 65 patients (46.1%) as no change, and 26 patients (18.4%) as decrease. At distance fixation, no significant differences were found between the parameters of the patients in the increase group and those of the patients in the other 2 groups. In patients with a small maximum angle of exodeviation at near fixation and with few visits, the deviation at near fixation significantly increased after diagnostic occlusion. CONCLUSION Fifty-two patients (36.8%) showed an increase of ≥ 5 PD during distance or near fixation after monocular occlusion. In patients with a small maximum angle at near fixation and with few visits, it would be beneficial to perform the monocular occlusion test before surgery to reveal the maximal deviation angle, regardless of exotropia type.
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Affiliation(s)
- Eun Hye Jung
- Department of Ophthalmology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Korea.
- Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 110-744, Korea
- Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
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Choi SH, Chung M, Park SW, Jeon NL, Kim JH, Yu YS. Relationship between Pericytes and Endothelial Cells in Retinal Neovascularization: A Histological and Immunofluorescent Study of Retinal Angiogenesis. Korean J Ophthalmol 2018; 32:70-76. [PMID: 29376221 PMCID: PMC5801093 DOI: 10.3341/kjo.2016.0115] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 07/03/2017] [Indexed: 12/26/2022] Open
Abstract
Purpose To evaluate the relationship between pericytes and endothelial cells in retinal neovascularization through histological and immunofluorescent studies. Methods C57BL/6J mice were exposed to hyperoxia from postnatal day (P) 7 to P12 and were returned to room air at P12 to induce a model of oxygen-induced retinopathy (OIR). The cross sections of enucleated eyes were processed with hematoxylin and eosin. Immunofluorescent staining of pericytes, endothelial cells, and N-cadherin was performed. Microfluidic devices were fabricated out of polydimethylsiloxane using soft lithography and replica molding. Human retinal microvascular endothelial cells, human brain microvascular endothelial cells, human umbilical vein endothelial cells and human placenta pericyte were mixed and co-cultured. Results Unlike the three-layered vascular plexus found in retinal angiogenesis of a normal mouse, angiogenesis in the OIR model is identified by the neovascular tuft extending into the vitreous. Neovascular tufts and the three-layered vascular plexus were both covered with pericytes in the OIR model. In this pathologic vascularization, N-cadherin, known to be crucial intercellular adhesion molecule, was also present. Further evaluation using the microfluidic in vitro model, successfully developed a microvascular network of endothelial cells covered with pericytes, mimicking normal retinal angiogenesis within 6 days. Conclusions Pericytes covering endothelial cells were observed not only in vasculature of normal retina but also pathologic neovascularization of OIR mouse at P17. Factors involved in the endothelial cell-pericyte interaction can be evaluated as an attractive novel treatment target. These future studies can be performed using microfluidic systems, which can shorten the study time and provide three-dimensional structural evaluation.
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Affiliation(s)
- Se Hyun Choi
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Minhwan Chung
- Mechanical Engineering, Seoul National University, Seoul, Korea
| | - Sung Wook Park
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.,FARB (Fight against Angiogenesis-Related Blindness) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Noo Li Jeon
- Mechanical Engineering, Seoul National University, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea.,FARB (Fight against Angiogenesis-Related Blindness) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,FARB (Fight against Angiogenesis-Related Blindness) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Korea.
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Jung EH, Kim JH, Kim SJ, Yu YS. Fluorescein Angiographic Abnormalities in the Contralateral Eye with Normal Fundus in Children with Unilateral Coats' Disease. Korean J Ophthalmol 2018; 32:65-69. [PMID: 29376220 PMCID: PMC5801092 DOI: 10.3341/kjo.2016.0092] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 03/07/2017] [Indexed: 11/23/2022] Open
Abstract
Purpose We report the detection of peripheral retinal vascular abnormalities in the fellow eye with normal fundus in children with unilateral Coats' disease. Methods The clinical records of patients diagnosed with Coats' disease were retrospectively reviewed. We recorded the subjects' characteristics and obtained fundus photography and fluorescein angiography (FA) images. The main outcome measure was peripheral vascular abnormalities in the contralateral eye with normal fundus in children with unilateral Coats' disease, observed with FA. Results Out of 47 patients with Coats' disease, two (4.3%) were diagnosed with clinically bilateral Coats' disease. Of the 45 patients with presumed unilateral Coats' disease, four (8.9%) had bilateral abnormal peripheral vasculature in FA. The mean age of these four patients was 6.4 ± 5.4 years (range, 1 to 14 years), and three patients were male (75%). All four had peripheral retinal nonperfusion, and two (50%) received laser photocoagulation due to peripheral leakage with telangiectatic vessels. Conclusions Coats' disease may more often be a bilateral disease with asymmetry than previously thought. Patients with Coats' disease should undergo careful examination of the fellow eye with FA in order to detect and treat vascular abnormalities that are not visible clinically.
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Affiliation(s)
- Eun Hye Jung
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Seong Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
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Seol BR, Yu YS, Kim SJ. Effect of 4-Month Intermittent Atropine Penalization in Amblyopic Children for Whom Patch Therapy Had Failed. J Pediatr Ophthalmol Strabismus 2017; 54:375-380. [PMID: 28678304 DOI: 10.3928/01913913-20170329-02] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 03/23/2017] [Indexed: 11/20/2022]
Abstract
PURPOSE To evaluate the effect of 4-month intermittent atropine penalization in children with amblyopia for whom patch therapy had failed and to analyze the factors associated with treatment success. METHODS This retrospective observational study included participants who visited the hospital between January 1, 2011, and December 31, 2015. Forty-one children with amblyopia for whom patch therapy had failed were included and their medical records were analyzed retrospectively. They were treated with 1% atropine eye drops in the sound eye twice per week for 4 months. Treatment success was defined as a best corrected visual acuity (BCVA) improvement of two lines in the amblyopic eye. Age, cause of amblyopia, pretreatment BCVA at the start of atropine penalization in the amblyopic eye, age at the start of eyeglass prescription, age at the start of patch therapy, duration, compliance with and total amount of patch therapy, type of refraction, type of strabismus, and cause of failure of patch therapy were analyzed and compared between two groups: the failure and success groups. RESULTS Twenty of 41 patients (48.8%) showed treatment success. The mean age was 5.59 ± 1.52 years and the mean BCVA of the amblyopic eye was 0.40 ± 0.20 logarithm of the minimum angle of resolution (logMAR). Younger age and poor pretreatment BCVA at the start of atropine penalization in the amblyopic eye were the factors associated with treatment success. CONCLUSIONS Intermittent atropine penalization for 4 months can improve BCVA in children with amblyopia for whom patch therapy has failed. Atropine penalization can be especially effective in younger children and those with poor BCVA at the start of atropine penalization in the amblyopic eye. [J Pediatr Ophthalmol Strabismus. 2017;54(6):375-380.].
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Cho CS, Lee SM, Lee BJ, Jo DH, Kim JH, Kim JH, Yu YS. Chronological Changes in Tip Cells during Sprouting Angiogenesis of Development of the Retinal Vasculature in Newborn Mice. Curr Eye Res 2017; 42:1511-1517. [PMID: 28925736 DOI: 10.1080/02713683.2017.1347691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE To investigate a sequential chronological change in tip cells during the development of the retinal vasculature in newborn mice. MATERIALS AND METHODS Newborn C57BL/6 mice were used for this study. To elucidate the patterns in the developing retinal vasculature, histology, and immunohistochemistry-antiplatelet endothelial cell adhesion molecule-1, anticollagen type IV, isolectin IB4-were performed on sections of mouse retina on postnatal days (P)-4, -8, and -12. Staining patterns of isolectin IB4-stained arterial and venous tip cells were compared in retinal wholemounts, in which the numbers and characteristics of tip cells were compared between arteries and veins on P-4, -6, and -8. In addition, vascular densities and branching patterns were compared between arterial and venous vascular forefront areas. RESULTS Tip cells in the superficial vascular plexus were observed until P-8. The number of tip cells was highest on P-6, decreasing dramatically from P-6 to P-8 (P-4, 165.2 ± 10.1, n = 17; P-6, 183.8 ± 19.4, n = 15; P8, 21.4 ± 6.4, n = 15) (p < 0.05, respectively, t-test). There was a greater number of tip cells in veins versus arteries on P-4 and P-6 (P-4, 91.0 ± 9.2 veins versus 74.2 ± 10.4 arteries; P-6, 104.0 ± 10.2 veins versus 79.8 ± 11.3 arteries) (p < 0.05, respectively). Arterial tip cells had thinner and longer sprouts compared with venous tip cells (basal thickness: 15.7 ± 8.7 veins versus 9.9 ± 3.5 μm arteries) (length, 20.3 ± 9.1 veins versus 37.1 ± 13.2 μm arteries on P-4) (p < 0.05, respectively). Vessel areas and densities of vascular branch points were significantly higher around veins compared to arteries (vessel areas: 58.9 ± 1.2% veins versus 40.8 ± 1.9% arteries; vascular branch points, 1371.9 ± 136.7/mm2 veins versus 1046.7 ± 175.5/mm2 arteries) (p < 0.05, respectively). CONCLUSION The number of tip cells increased to a greater extent in the superficial vascular plexus of veins versus arteries until P-6. Consequently, there are more vessel areas and vascular branch points near retinal veins versus arteries. Arterial tip cells are longer and thinner than the shorter and thicker venous tip cells.
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Affiliation(s)
- Chang Sik Cho
- a Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute , Seoul National University Hospital , Seoul , South Korea
| | - Sang-Mok Lee
- b Department of Ophthalmology , Hallym University Sacred Heart Hospital , Gyeonggi-do , South Korea
| | - Byung Joo Lee
- a Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute , Seoul National University Hospital , Seoul , South Korea
| | - Dong Hyun Jo
- a Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute , Seoul National University Hospital , Seoul , South Korea
| | - Jin Hyoung Kim
- a Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute , Seoul National University Hospital , Seoul , South Korea
| | - Jeong Hun Kim
- a Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute , Seoul National University Hospital , Seoul , South Korea.,c Department of Ophthalmology , Seoul National University College of Medicine , Seoul , South Korea.,d Seoul Artificial Eye Center , Clinical Research Institute, Seoul National University Hospital , Seoul , South Korea
| | - Young Suk Yu
- a Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute , Seoul National University Hospital , Seoul , South Korea.,c Department of Ophthalmology , Seoul National University College of Medicine , Seoul , South Korea.,d Seoul Artificial Eye Center , Clinical Research Institute, Seoul National University Hospital , Seoul , South Korea
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Jo DH, Lee K, Kim JH, Jun HO, Kim Y, Cho YL, Yu YS, Min JK, Kim JH. L1 increases adhesion-mediated proliferation and chemoresistance of retinoblastoma. Oncotarget 2017; 8:15441-15452. [PMID: 28061460 PMCID: PMC5362498 DOI: 10.18632/oncotarget.14487] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 12/13/2016] [Indexed: 01/07/2023] Open
Abstract
Retinoblastoma is the most common intraocular cancer in children, affecting 1/20,000 live births. Currently, children with retinoblastoma were treated with chemotherapy using drugs such as carboplatin, vincristine, and etoposide. Unfortunately, if conventional treatment fails, the affected eyes should be removed to prevent extension into adjacent tissues and metastasis. This study is to investigate the roles of L1 in adhesion-mediated proliferation and chemoresistance of retinoblastoma. L1 was differentially expressed in 30 retinoblastoma tissues and 2 retinoblastoma cell lines. Furthermore, the proportions of L1-positive cells in retinoblastoma tumors were negatively linked with the number of Flexner-Wintersteiner rosettes, a characteristic of differentiated retinoblastoma tumors, in each tumor sample. Following in vitro experiments using L1-deleted and -overexpressing cells showed that L1 increased adhesion-mediated proliferation of retinoblastoma cells via regulation of cell cycle-associated proteins with modulation of Akt, extracellular signal-regulated kinase, and p38 pathways. In addition, L1 increased resistance against carboplatin, vincristine, and esoposide through up-regulation of apoptosis- and multidrug resistance-related genes. In vivo tumor formation and chemoresistance were also positively linked with the levels of L1 in an orthotopic transplantation model in mice. In this manner, L1 increases adhesion-mediated proliferation and chemoresistance of retinoblastoma. Targeted therapy to L1 might be effective in the treatment of retinoblastoma tumors, especially which rapidly proliferate and demonstrate resistance to conventional chemotherapeutic drugs.
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Affiliation(s)
- Dong Hyun Jo
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Kyungmin Lee
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Biomolecular Science, University of Science & Technology, Daejeon, Republic of Korea
| | - Jin Hyoung Kim
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Hyoung Oh Jun
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Younghoon Kim
- Department of Pathology, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Young-Lai Cho
- Department of Chemistry, Dongguk University, Seoul, Republic of Korea
| | - Young Suk Yu
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jeong-Ki Min
- Biotherapeutics Translational Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Biomolecular Science, University of Science & Technology, Daejeon, Republic of Korea
| | - Jeong Hun Kim
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.,Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea.,Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
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Yu YS. [Current situation and mechanism of drug resistance of gram-negative bacteria in China]. Zhonghua Jie He He Hu Xi Za Zhi 2017; 40:573-577. [PMID: 28810310 DOI: 10.3760/cma.j.issn.1001-0939.2017.08.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Seo SH, Kim MJ, Park SW, Kim JH, Yu YS, Song JY, Cho SI, Ahn JH, Oh YH, Lee JS, Lee S, Seong MW, Park SS, Kim JY. Large Deletions of TSPAN12 Cause Familial Exudative Vitreoretinopathy (FEVR). Invest Ophthalmol Vis Sci 2017; 57:6902-6908. [PMID: 28002565 DOI: 10.1167/iovs.16-20585] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Purpose Familial exudative vitreoretinopathy (FEVR) is a rare, hereditary visual disorder. The gene TSPAN12 is associated with autosomal dominant inheritance of FEVR. The prevalence and impact of large deletions/duplications of TSPAN12 on FEVR patients is unknown. To glean better insight of TSPAN12 on FEVR pathology, herein, we describe three FEVR patients with TSPAN12 deletions. Methods Thirty-three Korean FEVR patients, who previously screened negative for TSPAN12 mutations, mutations in other FEVR-associated genes such as NDP, FZD4, LRP5, and large deletions and duplications of NDP, FZD4, and LRP5, were selected for TSPAN12 large deletion and duplication analyses. Semiquantitative multiplex PCR for TSPAN12 gene dosage analyses were performed, followed by droplet digital PCR (ddPCR) for validation. Results Among the 33 patients, three patients were confirmed to carry large TSPAN12 deletions. Two of them had whole-gene deletions of TSPAN12, and the other patient possessed a deletion of TSPAN12 in exon 4. FEVR severity detected in these patients was not more severe than in a patient with TSPAN12 point mutation. Conclusions Regarding previously reported proportions of FEVR-associated genes contributing to the disorder's autosomal dominant inheritance pattern in Korea, we determined that patients with TSPAN12 large deletions were more common than patients with single nucleotide variants in TSPAN12. Evaluating TSPAN12 large deletions and duplications should be considered in FEVR screening and diagnosis as well as in routine genetic workups for FEVR patients.
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Affiliation(s)
- Soo Hyun Seo
- Department of Laboratory Medicine, Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Man Jin Kim
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sung Wook Park
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Ji Yun Song
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sung Im Cho
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Joo Hyun Ahn
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Yeon Hee Oh
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jee-Soo Lee
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Seungjun Lee
- Department of Laboratory Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Moon-Woo Seong
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Sung Sup Park
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea 5Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Ji Yeon Kim
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
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Abstract
PURPOSE To investigate the factors associated with stereopsis in patients with refractive accommodative esotropia. METHODS The medical records of patients with refractive accommodative esotropia from January 2008 to June 2016 were analyzed retrospectively. Age, sex, cycloplegic refractive error, presence of amblyopia, angle of deviation, and stereoacuity and fusional ability were evaluated. Patients were divided into good stereopsis (40-100 arcsec) and poor stereopsis (>100 arcsec) groups. RESULTS A total of 85 patients were included, 31 (36.5%) in the good stereopsis group. The initial mean refractive error was 4.21 ± 1.76 D. The initial mean angle of deviation without correction was 20.5Δ ± 11.4Δ at distance and 23.8Δ ± 11.6Δ at near fixation; the final angle, with correction, was 1.3Δ ± 2.2Δ at distance and 2.0Δ ± 2.6Δ at near. The initial mean refraction, differences between both eyes, and final deviation angle with correction were smaller in the good stereopsis group than in the poor stereopsis group. Those with orthotropia both at distance and near had better stereopsis than those with residual esotropia (P < 0.001). Patients with >4Δ of deviation at distance or >5Δ of deviation at near had only gross or nil stereopsis. CONCLUSIONS The refractive error, angle of deviation, and fusional ability were associated with stereopsis in patients with refractive accommodative esotropia. Good stereopsis may be only achievable with a misalignment of ≤4Δ at distance and ≤5Δ at near fixation.
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Affiliation(s)
- Haeng Jin Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea; Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, South Korea.
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, South Korea; Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, South Korea
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Lee HJ, Kim SJ, Yu YS. Clinical characteristics of sibling patients with comitant strabismus. Int J Ophthalmol 2017; 10:772-775. [PMID: 28546936 DOI: 10.18240/ijo.2017.05.19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Accepted: 10/17/2016] [Indexed: 11/23/2022] Open
Abstract
AIM To investigate the clinical characteristics of sibling patients with comitant strabismus. METHODS Sibling patients who were diagnosed with comitant strabismus from January 2005 to December 2014 were retrospectively reviewed. Factors including age, sex, types of strabismus, refractive errors, angle of deviation, and coexistence of other strabismus were analyzed. RESULTS A total of 62 patients (31 pairs of siblings) were included. Of these, 26 pairs had intermittent exotropia, 3 had accommodative esotropia, and 2 had infantile esotropia. There were no pairs with different subtypes of strabismus. The age at first visit was 3.7±2.6y and the mean follow-up period was 30.5±24.1mo. In siblings with intermittent exotropia, there was no difference in age of onset, age at operation, or refractive errors between the first and second-born children. The 20 (77%) pairs of siblings with exotropia showed more than 80% concordance of maximum angle of deviation during follow-up. In the 9 pairs in which both siblings had an operation, the final angle of deviation after the operation was 8.2±8.1 prism diopters (PD) in first-born children and 8.6±6.5 PD in second-born children. CONCLUSION The subtypes of strabismus are the same in all pairs of siblings and clinical characteristics of strabismus are similar between the first and second-born children. This similarity could be an indicator for the diagnosis of second-born children. Further prospective study including a larger number of sibling patients is needed.
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Affiliation(s)
- Haeng Jin Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul 110-744, Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul 110-744, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul 110-744, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul 110-744, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul 110-744, Korea
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Zhou H, Yao YK, Yu YS, Zhou JY. [Treatment of gram-negative bacillus infection in critically ill patients:personalization under the guidance of pharmacokinetics and pharmacodynamics]. Zhonghua Nei Ke Za Zhi 2017; 56:340-343. [PMID: 28460503 DOI: 10.3760/cma.j.issn.0578-1426.2017.05.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
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Abstract
PURPOSE To describe the characteristics and frequency of ophthalmologic findings in patients with Lennox-Gastaut syndrome (LGS). METHODS The medical records of patients diagnosed with LGS at Seoul National University Children's Hospital from January 2004 to August 2014 were retrospectively reviewed. The records of 34 patients (mean age ± standard deviation, 2.66 ± 3.51 years; male, 58.8%) were reviewed. The primary measure was the incidence of ophthalmologic manifestations. RESULTS Of the 34 patients, 88.2% had at least one ocular abnormality. Refractive error (52.9%) was the most frequently observed ophthalmologic manifestation in patients with LGS, followed by strabismus (32.4%), cortical visual impairment (23.5%), and retinopathy of prematurity (8.8%). Among these cases, seven patients had exotropia and three had esotropia. CONCLUSIONS LGS is a childhood-onset epileptic encephalopathy with variable ophthalmologic manifestations, the most frequent being refractive errors. Patients with suspected LGS should be examined regularly because ophthalmological features can change during their disease course.
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Affiliation(s)
- Bo Hee Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Seong Joon Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea.,Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
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Abstract
Purpose To evaluate the long-term visual outcomes and complications of cataract surgery in eyes previously treated for retinoblastoma. Methods We reviewed the medical records of patients who underwent cataract extraction and intraocular lens implantation at Seoul National University Children's Hospital for a secondary cataract that developed after retinoblastoma treatment. Results During the period between 1990 and 2014, 208 eyes of 147 patients received eye-salvaging treatment (radiotherapy, chemotherapy, and local therapy) for retinoblastoma at Seoul National University Children's Hospital. Among these eyes, a secondary cataract was detected in 17 eyes of 14 patients, and five eyes of five patients underwent cataract surgery. The median age of cataract formation was 97 months (range, 38 to 153 months). The medial interval between the diagnosis of retinoblastoma and cataract formation was 79 months (range, 29 to 140 months). All patients received posterior chamber intraocular lens insertion after irrigation and aspiration of the lens through a scleral tunnel incision. Anterior vitrectomy and posterior capsulotomy were performed in two eyes and a laser capsulotomy was subsequently performed in one eye. No intraoperative and postoperative complications occurred. The median follow-up after surgery was 36 months (range, 14 to 47 months). The final best corrected visual acuities were improved in all five eyes. No intraocular tumor recurrences or metastases occurred. Conclusions After retinoblastoma regression, cataract extraction in our series was not associated with tumor recurrence or metastasis. Visual improvement was noted in every patient.
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Affiliation(s)
- Hyeong Min Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.; Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Byung Joo Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.; Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.; Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea.; Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea.; Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Korea
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Kim YJ, Park SY, Won JK, Lee C, Kim J, Yu YS, Oh JY. A case of recurrent, grade 3 corneal choriostoma after surgical excision. J AAPOS 2017; 21:71-73. [PMID: 27866069 DOI: 10.1016/j.jaapos.2016.08.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 08/11/2016] [Accepted: 08/15/2016] [Indexed: 11/15/2022]
Abstract
We report a case of congenital grade 3 corneal choriostoma accompanied by anterior staphyloma. The tumor was excised by deep lamellar dissection, and the defect was filled with multilayer amniotic membranes. On histologic examination, the excised tumor contained demislike connective tissues, dermal adnexa (hair follicles and sebaceous gland), and adipose tissue, and was lined by keratinizing squamous epithelium. One month after surgery, the tumor recurred and progressively enlarged.
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Affiliation(s)
- Yu Jeong Kim
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea
| | - Se Yeon Park
- Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea
| | - Jae-Kyung Won
- Department of Pathology, Seoul National University Hospital, Daehak-ro, Jongno-gu, Seoul, Republic of Korea
| | - Cheol Lee
- Department of Pathology, Seoul National University Hospital, Daehak-ro, Jongno-gu, Seoul, Republic of Korea
| | - Jaeyoung Kim
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea
| | - Joo Youn Oh
- Department of Ophthalmology, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea; Laboratory of Ocular Regenerative Medicine and Immunology, Biomedical Research Institute, Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, Korea.
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Kim MJ, Lee WJ, Park KH, Kim TW, Lee EJ, Yu YS, Jeoung JW. Clinical Presentation and the Treatment of Glaucoma in Patients with a Facial Port-wine Stain. J Korean Ophthalmol Soc 2017. [DOI: 10.3341/jkos.2017.58.11.1234] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Mi Jin Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Won June Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Ki Ho Park
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Tae-Woo Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Eun Ji Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Jin Wook Jeoung
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
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Jung EH, Kim SJ, Yu YS. Factors associated with surgical success in adult patients with exotropia. J AAPOS 2016; 20:511-514. [PMID: 27815187 DOI: 10.1016/j.jaapos.2016.08.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 08/15/2016] [Accepted: 08/15/2016] [Indexed: 10/20/2022]
Abstract
PURPOSE To report the results of surgical treatment for intermittent or constant comitant exotropia in adults and to examine the factors associated with the surgical outcome. METHODS The medical records of consecutive patients older than 18 years of age at the time of surgery for intermittent or constant comitant exotropia and with at least 1 year's follow-up were retrospectively reviewed. Surgical success was defined as postoperative esodeviation of <5Δ, orthotropia, or exodeviation of <10Δ. Overcorrection (defined as esodeviation >5Δ) and recurrence (exodeviation of >10Δ) were considered surgical failure. Preoperative patient characteristics, surgical procedures performed, and early postoperative ocular alignment were evaluated as potential factors associated with the surgical outcome. RESULTS A total of 39 patients were included, of whom 28 (72%) achieved surgical success, 7 (18%) showed overcorrection, and 4 (10%) had recurrence. Alignment at postoperative week 1 was the only significant factor correlated with surgical results. Surgical outcome was best with early postoperative alignment of <10Δ of esotropia. CONCLUSIONS Early postoperative overcorrection of <10Δ resulted in more favorable surgical outcomes in adults undergoing surgery to treat exotropia.
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Affiliation(s)
- Eun Hye Jung
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea; Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea.
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea; Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
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Quan JJ, Wang Y, Ji JS, Wang YF, Wang HP, Xu YC, Yu YS. [The activity of moxalactam against Enterobacteriaceae and anaerobia in vitro]. Zhonghua Yi Xue Za Zhi 2016; 96:1459-64. [PMID: 27266357 DOI: 10.3760/cma.j.issn.0376-2491.2016.18.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To observe the antibacterial activity of moxalactam against Enterobacteriaceae bacteria and anaerobic bacteria in vitro, and to compare with other antibacterial drugs, for providing experimental basis for the clinical application of moxalactam. METHODS Minimum inhibitory concentrations (MICs) of moxalactam and other antibacterial agents against 491 Enterobacteriaceae spp. and anaerobic spp.collecting from clinical settings were determined by agar dilution methods and E-test strips according to the Clinical and Laboratory Standards Institute (CLSI)(2014). RESULTS Moxalactam showed great antibacterial activity to Enterobacteriaceae spp., including ESBLs-producing Escherichia coli, Klebsiella pneumoniae, and Proteus spp., with the MIC(50), MIC(90), and susceptibility rates of 0.25-4 mg/L, 0.5-8 mg/L, and >90%, respectively. The susceptibility rates of Enterobacteriaceae with ESBLs-producing or non-ESBLs-producing to imipenem and meropenem were both higher than 90%. The susceptibility rates of ESBLs-producing Escherichia coli, Klebsiella pneumoniae, and Proteus spp.to piperacillin/tazobactam and cefoperazone/sulbactam were 90%, 68%, 53% and 76%, 66%, 76.6%, respectively, while the susceptibility rates of non-ESBLs-producing Escherichia coli, Klebsiella pneumoniae, and Proteus spp.were all more than 95%. The susceptibility rates of Enterobacter spp. and other Enterobacter to piperacillin/tazobactam were 80%, 80%and that to cefoperazone/sulbactam were 80%, 76.7%, respectively.The MICs range of moxalactam on anaerobic spp.was from ≤0.064 to >256 mg/L, while MIC(50) was 2 mg/L and MIC(90) was 64 mg/L. CONCLUSIONS Moxalactam showed well activity against ESBLs-producing and non-ESBLs-producing Enterobacteriaceae and anaerobia.
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Affiliation(s)
- J J Quan
- Sir Run Run Shaw Hospital, the Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310016, China
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Jo DH, Lee K, Kim JH, Jun HO, Kim YH, Cho YL, Yu YS, Min JK, Kim JH. Abstract 2469: The role of L1 in proliferation and chemoresistance of retinoblastoma. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-2469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Retinoblastoma is the most common intraocular malignant tumor in children, affecting approximately 1 in 20,000 live births. In this study, we investigated the role of L1, a transmembrane protein, in proliferation and chemoresistance of retinoblastoma to figure out the potential for the novel therapeutic target. Retinoblastoma tissues demonstrated varying degrees of L1 positivity in 86.6% (26/30) of samples. In particular, the degree of L1 positivity was inversely related with that of Flexner-Wintersteiner rosette formation. Further in vitro studies using stable cell lines which showed up- or down-regulation of L1 demonstrated that L1 was associated with cell-cell adhesion and proliferation of retinoblastoma cells. Retinoblastoma cells with low expression of L1 showed decreased tumor formation in vivo. In addition, L1 expression was related with resistance to carboplatin, one of the most-widely utilized chemotherapeutic agents against retinoblastoma. In line with these results, retinoblastoma cells with higher expression of L1 demonstrated increased resistance to carboplatin in vivo. We also observed diffuse and dense expression of L1 in retinoblastoma tissues from 4 patients who underwent enucleation despite intensive chemotherapy based on carboplatin. Taken together, L1 was related with proliferation and chemoresistance of retinoblastoma and might be a potential therapeutic target of retinoblastoma.
Citation Format: Dong Hyun Jo, Kyungmin Lee, Jin Hyoung Kim, Hyoung Oh Jun, Young Hoon Kim, Young-Lai Cho, Young Suk Yu, Jeong-Ki Min, Jeong Hun Kim. The role of L1 in proliferation and chemoresistance of retinoblastoma. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 2469.
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Affiliation(s)
- Dong Hyun Jo
- 1Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Kyungmin Lee
- 2Functional Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Jin Hyoung Kim
- 3Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyoung Oh Jun
- 3Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea
| | - Young Hoon Kim
- 4Department of Pathology, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Young-Lai Cho
- 5Center for Nanosafety Metrology, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
| | - Young Suk Yu
- 6Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jeong-Ki Min
- 2Functional Genomics Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Jeong Hun Kim
- 1Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Republic of Korea
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Zhou H, Yu YS, Zhou JY. [Choice of antimicrobial agents in serious infections: broad-spectrum and individualization]. Zhonghua Nei Ke Za Zhi 2016; 55:428-429. [PMID: 27256602 DOI: 10.3760/cma.j.issn.0578-1426.2016.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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Kim Y, Nam HJ, Lee J, Park DY, Kim C, Yu YS, Kim D, Park SW, Bhin J, Hwang D, Lee H, Koh GY, Baek SH. Methylation-dependent regulation of HIF-1α stability restricts retinal and tumour angiogenesis. Nat Commun 2016; 7:10347. [PMID: 26757928 PMCID: PMC4735525 DOI: 10.1038/ncomms10347] [Citation(s) in RCA: 138] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 12/02/2015] [Indexed: 12/18/2022] Open
Abstract
Hypoxia-inducible factor-1α (HIF-1α) mediates hypoxic responses and regulates gene expression involved in angiogenesis, invasion and metabolism. Among the various HIF-1α posttranslational modifications, HIF-1α methylation and its physiological role have not yet been elucidated. Here we show that HIF-1α is methylated by SET7/9 methyltransferase, and that lysine-specific demethylase 1 reverses its methylation. The functional consequence of HIF-1α methylation is the modulation of HIF-1α stability primarily in the nucleus, independent of its proline hydroxylation, during long-term hypoxic and normoxic conditions. Knock-in mice bearing a methylation-defective Hif1aKA/KA allele exhibit enhanced retinal angiogenesis and tumour vascularization via HIF-1α stabilization. Importantly, S28Y and R30Q mutations of HIF-1α, found in human cancers, are involved in the altered HIF-1α stability. Together, these results demonstrate a role for HIF-1α methylation in regulating protein stability, thereby modulating biological output including retinal and tumour angiogenesis, with therapeutic implications in human cancer. HIF-1α is a pivotal protein involved in angiogenesis and is known to be regulated posttranslationally. Here, the authors show that HIF-1α is methylated by Set7/9 methyltransferase, which reduces protein stability and contributes to reduced angiogenesis.
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Affiliation(s)
- Yunho Kim
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Hye Jin Nam
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Junyeop Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.,Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, South Korea
| | - Do Young Park
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - Chan Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea.,Department of Medical Oncology, CHA Bundang Medical Center, CHA University, Seongnam 13496, South Korea
| | - Young Suk Yu
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Dongha Kim
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Se Won Park
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
| | - Jinhyuk Bhin
- Department of New Biology and Center for Plant Aging Research, Institute for Basic Science, DGIST, Daegu 711-873, South Korea
| | - Daehee Hwang
- Department of New Biology and Center for Plant Aging Research, Institute for Basic Science, DGIST, Daegu 711-873, South Korea
| | - Ho Lee
- Graduate School of Cancer Science and Policy, Research Institute, National Cancer Center, Gyeonggi-do 10408, South Korea
| | - Gou Young Koh
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, South Korea
| | - Sung Hee Baek
- Creative Research Initiatives Center for Chromatin Dynamics, School of Biological Sciences, Seoul National University, Seoul 151-742, South Korea
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Lee HJ, Jo DH, Kim JH, Yu YS. Clinical Characteristics of Retinoblastoma Patients whose Diagnosis was Difficult due to Atypical Ocular Manifestation. J Korean Ophthalmol Soc 2016. [DOI: 10.3341/jkos.2016.57.5.829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Haeng Jin Lee
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Dong Hyun Jo
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
- Fight against Angiogenesis-Related Blindness Laboratory, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
- Fight against Angiogenesis-Related Blindness Laboratory, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Fight against Angiogenesis-Related Blindness Laboratory, Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
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Wang XL, Huang HY, Li Z, Yu YS, Hu YQ, Ye WX, Hua F, Chen YH, Ni H, Ding QW, Shen ZY. Risk factors associated with aortic remodeling in patients with Stanford type B aortic dissection after thoracic endovascular aortic repair. Genet Mol Res 2015; 14:11692-9. [PMID: 26436493 DOI: 10.4238/2015.october.2.2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
To determine the risk factors associated with adverse aortic remodeling after thoracic endovascular aortic repair (TEVAR) in patients with Stanford type B aortic dissection, we performed a retrospective analysis of 54 patients between January 2009 and June 2012 at the First Affiliated Hospital of Soochow University. All patients underwent TEVAR of the descending thoracic aorta. Multiple-logistic regression analyses were performed to identify risk factors associated with aortic remodeling. True-lumen and false-lumen volumes were increased (P < 0.001) and decreased (P < 0.001) after surgery, respectively. Therefore, the remodeling index increased after surgery (1.04 ± 0.6 to 2.06 ± 1.12, P < 0.001). Remodeling index and true-lumen volume were higher in the favorable aortic remodeling group compared to the adverse aortic remodeling group (P < 0.001), while the false-lumen volume was lower in the favorable aortic remodeling group (P < 0.001). Multivariate analyses revealed a branch originating from the false lumen (OR = 39.9, P < 0.01) and multiple tears (OR = 27.4, P < 0.01) to be independent risk factors for adverse aortic remodeling. Therefore, a branch originating from the false lumen and multiple tears were determined to be independent risk factors for adverse aortic remodeling after TEVAR in patients with Stanford type B aortic dissection.
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Affiliation(s)
- X L Wang
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - H Y Huang
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Z Li
- Department of Interventional Radiology, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Y S Yu
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Y Q Hu
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - W X Ye
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - F Hua
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Y H Chen
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - H Ni
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Q W Ding
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
| | - Z Y Shen
- Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, China
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Jo DH, Kim JH, Cho CS, Cho YL, Jun HO, Yu YS, Min JK, Kim JH. STAT3 inhibition suppresses proliferation of retinoblastoma through down-regulation of positive feedback loop of STAT3/miR-17-92 clusters. Oncotarget 2015; 5:11513-25. [PMID: 25359779 PMCID: PMC4294389 DOI: 10.18632/oncotarget.2546] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 09/30/2014] [Indexed: 12/29/2022] Open
Abstract
Retinoblastoma, the most common intraocular malignant tumor in children, is characterized by the loss of both functional alleles of RB1 gene, which however alone cannot maintain malignant characteristics of retinoblastoma cells. Nevertheless, the investigation of other molecular aberrations such as matrix metalloproteinases (MMPs) and miRNAs is still lacking. In this study, we demonstrate that STAT3 is activated in retinoblastoma cells, Ki67-positive areas of in vivo orthotopic tumors in BALB/c nude mice, and human retinoblastoma tissues of the advanced stage. Furthermore, target genes of STAT3 including BCL2, BCL2L1, BIRC5, and MMP9 are up-regulated in retinoblastoma cells compared to other retinal constituent cells. Interestingly, STAT3 inhibition by targeted siRNA suppresses the proliferation of retinoblastoma cells and the formation of in vivo orthotopic tumors. In line with these results, STAT3 siRNA effectively induces down-regulation of target genes of STAT3. In addition, miRNA microarray analysis and further real-time PCR experiments with STAT3 siRNA treatment show that STAT3 activation is related to the up-regulation of miR-17-92 clusters in retinoblastoma cells via positive feedback loop between them. In conclusion, we suggest that STAT3 inhibition could be a potential therapeutic approach in retinoblastoma through the suppression of tumor proliferation.
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Affiliation(s)
- Dong Hyun Jo
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea. Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea. Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jin Hyoung Kim
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea. Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Chang Sik Cho
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea. Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea. Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Young-Lai Cho
- Center for Nanosafety Metrology, Korea Research Institute of Standards and Science Daejeon, Republic of Korea
| | - Hyoung Oh Jun
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea. Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea
| | - Young Suk Yu
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea. Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Republic of Korea
| | - Jeong-Ki Min
- Research Center for Integrated Cellulomics, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Jeong Hun Kim
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Clinical Research Institute, Seoul National University Hospital, Seoul, Republic of Korea. Tumor Microenvironment Research Center, Global Core Research Center, Seoul National University, Seoul, Republic of Korea. Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, Republic of Korea. Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Republic of Korea
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Seo SH, Yu YS, Park SW, Kim JH, Kim HK, Cho SI, Park H, Lee SJ, Seong MW, Park SS, Kim JY. Molecular Characterization ofFZD4,LRP5, andTSPAN12in Familial Exudative Vitreoretinopathy. ACTA ACUST UNITED AC 2015; 56:5143-51. [DOI: 10.1167/iovs.14-15680] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Soo Hyun Seo
- Department of Laboratory Medicine Seoul National University Hospital, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Sung Wook Park
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea
| | - Hyun Kyung Kim
- Department of Laboratory Medicine Seoul National University Hospital, Seoul, Korea
| | - Sung Im Cho
- Department of Laboratory Medicine Seoul National University Hospital, Seoul, Korea
| | - Hyunwoong Park
- Department of Laboratory Medicine Seoul National University Hospital, Seoul, Korea
| | - Seung Jun Lee
- Department of Laboratory Medicine Seoul National University Hospital, Seoul, Korea
| | - Moon-Woo Seong
- Department of Laboratory Medicine Seoul National University Hospital, Seoul, Korea
| | - Sung Sup Park
- Department of Laboratory Medicine Seoul National University Hospital, Seoul, Korea 4Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Ji Yeon Kim
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
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Lee BJ, Kim SJ, Yu YS. The Clinical Course of Intermittent Exotropia With Small Initial Deviation. J Pediatr Ophthalmol Strabismus 2015; 52:206-12. [PMID: 26043002 DOI: 10.3928/01913913-20150520-01] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Accepted: 03/13/2015] [Indexed: 11/20/2022]
Abstract
PURPOSE To address the clinical course of patients who initially presented with small exodeviation (≥ 10 and ≤ 18 prism diopters [PD]) and to investigate the risk factors associated with progression. METHODS The clinical records of patients who were first diagnosed as having intermittent exotropia of small initial deviation from August 2008 to March 2011 and were followed up for 2 or more years were reviewed retrospectively. The initial clinical features associated with the risk of disease progression and surgical intervention were analyzed. RESULTS Among 86 patients who met the inclusion criteria, 37 reached a distance deviation of 20 PD or greater and 51 underwent surgical correction for exodeviation during the follow-up. Cumulative percentages of patients whose distance deviation reached 20 PD or greater and who underwent surgery at 24 months were 47.5% and 47.7%, respectively. Mean initial stereoacuity was significantly worse in patients whose final exodeviation progressed to 20 PD or greater. The cumulative probability of surgery was significantly higher in patients who showed constant deviation at the initial examination. CONCLUSIONS Nearly half of patients with small exodeviation are expected to reach a final distance deviation of 20 PD or greater or to undergo surgery after 2 years of follow-up. Initial constant deviation was associated with increased cumulative probability of surgical intervention.
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Kang HG, Ahn YH, Kim JH, Ha IS, Yu YS, Park YH, Cheong HI. Atypical retinopathy in patients with nephronophthisis type 1: an uncommon ophthalmological finding. Clin Exp Ophthalmol 2015; 43:437-42. [PMID: 25401970 DOI: 10.1111/ceo.12469] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 11/01/2014] [Indexed: 12/27/2022]
Abstract
BACKGROUND Progressive retinal degeneration without retinal pigmentation has been repeatedly observed in Korean nephronophthisis (NPHP) type 1 patients with a total homozygous deletion of NPHP1. DESIGN Retrospective case series. PARTICIPANTS Patients with clinical diagnosis of NPHP and genetic diagnosis of total deletion of NPHP1 (n = 5) were included in this study. METHODS Patients with clinical diagnosis of NPHP (n = 57) were screened for total deletion of NPHP1 by polymerase chain reaction (PCR) for the 20 exons of NPHP1. The clinical and ophthalmological findings of NPHP type 1 patients were reviewed. Additionally, four exons of MALL, a gene adjacent to NPHP1, were amplified using PCR, and amplification failure was considered a homozygous deletion encompassing the corresponding exons. MAIN OUTCOME MEASURE Ophthalmological findings in NPHP type 1 patients. RESULTS Five of 57 patients with clinical diagnosis of NPHP were diagnosed as having NPHP type 1 by genetic analysis. Chronic renal failure was diagnosed in these five patients at 7.9-15.4 years of age. All the patients with NPHP type 1 had progressive decline in visual acuity with various ages of onset (2-17 years). Ophthalmological examinations revealed unexpected findings of retinopathy with large or small flecks, which was compatible with Stargardt-like retinopathy or albipunctatus retinopathy in majority of them (four of five). The genetic study revealed an additional deletion of exon 1 of the adjacent gene MALL. CONCLUSIONS We report the unexpectedly common retinal involvement of NPHP type 1 with an additional MALL deletion in a Korean cohort.
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Affiliation(s)
- Hee Gyung Kang
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea.,Research Coordination Center for Rare Diseases, Seoul National University Hospital, Seoul, Korea
| | - Yo Han Ahn
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Il-Soo Ha
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea.,Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Yong-Hoon Park
- Department of Pediatrics, Yeungnam University College of Medicine, Daegu, Korea
| | - Hae Il Cheong
- Department of Pediatrics, Seoul National University Children's Hospital, Seoul, Korea.,Research Coordination Center for Rare Diseases, Seoul National University Hospital, Seoul, Korea.,Kidney Research Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
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Chang JW, Kim JH, Kim SJ, Yu YS. Congenital aniridia: long-term clinical course, visual outcome, and prognostic factors. Korean J Ophthalmol 2014; 28:479-85. [PMID: 25435751 PMCID: PMC4239467 DOI: 10.3341/kjo.2014.28.6.479] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Accepted: 03/13/2014] [Indexed: 11/23/2022] Open
Abstract
Purpose To describe the clinical course of congenital aniridia and to evaluate prognostic factors for visual outcome after long-term follow-up. Methods The medical records of 120 eyes from 60 patients with congenital aniridia were retrospectively reviewed. The prevalence and clinical course of ophthalmic characteristics, systemic disease, refractive errors, and visual acuity were assessed. Prognostic factors for final visual outcomes were analyzed. Results Aniridic keratopathy developed in 82 (69%) of 119 eyes. Macular hypoplasia was observed in 70 eyes of 35 patients (91%). Cataract was observed in 63 of 120 eyes (53%). Nystagmus was present in 41 patients (68% of 60 patients) at the initial visit but decreased in five patients (8% of 60 patients). Ocular hypertension was detected in 19 eyes (20% of 93 eyes), six (32% of 19 eyes) of which developed secondarily after cataract surgery. The mean changes in spherical equivalent and astigmatism during the follow-up period were -1.10 and 1.53 diopter, respectively. The mean final visual acuity was 1.028 logarithm of minimal angle of resolution. Nystagmus and ocular hypertension were identified as prognostic factors for poor visual outcome. Conclusions Identification of nystagmus and ocular hypertension was important to predict final visual outcome. Based on the high rate of secondary ocular hypertension after cataract surgery, careful management is needed.
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Affiliation(s)
- Ji Woong Chang
- Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Jeong Hun Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea. ; Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Seong-Joon Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea. ; Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Korea. ; Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
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50
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Seong MW, Seo SH, Yu YS, Hwang JM, Cho SI, Ra EK, Park H, Lee SJ, Kim JY, Park SS. Diagnostic application of an extensive gene panel for Leber congenital amaurosis with severe genetic heterogeneity. J Mol Diagn 2014; 17:100-5. [PMID: 25445212 DOI: 10.1016/j.jmoldx.2014.09.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Revised: 09/08/2014] [Accepted: 09/18/2014] [Indexed: 10/24/2022] Open
Abstract
Leber congenital amaurosis (LCA) is a genetically heterogeneous disorder and the most severe form of inherited retinal dystrophy. We report results of a diagnostic application of an extensive gene panel composed of 204 retinal dystrophy-related genes and discuss its feasibility as a diagnostic tool. Nineteen unrelated LCA patients were included in the study: two patients for validation purposes of our gene panel, 15 previously analyzed patients with no identified mutations, and two previously unanalyzed patients. Genetic diagnosis for each patient was conducted according to whether the variants were consistent with the known inheritance pattern of each gene. We identified two heterozygous or homozygous pathogenic variants in seven of 19 patients. On the basis of mutation information, clinical features were re-reviewed, and clinical diagnoses for two patients were revised from LCA to LCA-related disorders. In addition, a coverage simulation was performed to determine the optimal depth of coverage of the gene panel. Using our gene panel, we diagnosed LCA and LCA-related disorders in 36.8% of patients and one or more deleterious variants or variants of unknown significance in 89.5% of patients. Molecular diagnosis using this extensive gene panel is expected to facilitate diagnosis of retinal dystrophy and help provide proper treatment to patients, although further analyses is needed for a complete clinical validation.
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Affiliation(s)
- Moon-Woo Seong
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Soo Hyun Seo
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Young Suk Yu
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jeong-Min Hwang
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Sung Im Cho
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Eun Kyung Ra
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyunwoong Park
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Seung Jun Lee
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ji Yeon Kim
- Biomedical Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sung Sup Park
- Department of Laboratory Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea; Biomedical Research Institute, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
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