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Park W, Seo H, Kim J, Hong YM, Song H, Joo BJ, Kim S, Kim E, Yae CG, Kim J, Jin J, Kim J, Lee YH, Kim J, Kim HK, Park JU. In-depth correlation analysis between tear glucose and blood glucose using a wireless smart contact lens. Nat Commun 2024; 15:2828. [PMID: 38565532 PMCID: PMC10987615 DOI: 10.1038/s41467-024-47123-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 03/19/2024] [Indexed: 04/04/2024] Open
Abstract
Tears have emerged as a promising alternative to blood for diagnosing diabetes. Despite increasing attempts to measure tear glucose using smart contact lenses, the controversy surrounding the correlation between tear glucose and blood glucose still limits the clinical usage of tears. Herein, we present an in-depth investigation of the correlation between tear glucose and blood glucose using a wireless and soft smart contact lens for continuous monitoring of tear glucose. This smart contact lens is capable of quantitatively monitoring the tear glucose levels in basal tears excluding the effect of reflex tears which might weaken the relationship with blood glucose. Furthermore, this smart contact lens can provide an unprecedented level of continuous tear glucose data acquisition at sub-minute intervals. These advantages allow the precise estimation of lag time, enabling the establishment of the concept called 'personalized lag time'. This demonstration considers individual differences and is successfully applied to both non-diabetic and diabetic humans, as well as in animal models, resulting in a high correlation.
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Affiliation(s)
- Wonjung Park
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea
| | - Hunkyu Seo
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea
| | - Jeongho Kim
- Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea
| | - Yeon-Mi Hong
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea
| | - Hayoung Song
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea
| | - Byung Jun Joo
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea
| | - Sumin Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea
| | - Enji Kim
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea
| | - Che-Gyem Yae
- Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu, 41944, Republic of Korea
| | - Jeonghyun Kim
- Department of Electronics Convergence Engineering, Kwangwoon University, Seoul, 01897, Republic of Korea
| | - Jonghwa Jin
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, 41944, Republic of Korea
| | - Joohee Kim
- Center for Bionics, Biomedical Research Division Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
| | - Yong-Ho Lee
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
- Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
- Institute for Innovation in Digital Healthcare (IIDH), Severance Hospital, Seoul, 03722, Republic of Korea.
| | - Jayoung Kim
- Department of Medical Engineering, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
| | - Hong Kyun Kim
- Cell and Matrix Research Institute, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea.
- Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu, 41944, Republic of Korea.
- Department of Ophthalmology, Kyungpook National University Hospital, Daegu, 41944, Republic of Korea.
| | - Jang-Ung Park
- Department of Materials Science and Engineering, Yonsei University, Seoul, 03722, Republic of Korea.
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul, 03722, Republic of Korea.
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul, 03722, Republic of Korea.
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul, 03722, Republic of Korea.
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Kang YK, Park DH, Ryu G, Kim HK, Kim DH, Do JR. Repositioned versus exchanged flanged intraocular lens fixation for intraocular lens dislocation. Sci Rep 2024; 14:6181. [PMID: 38485976 PMCID: PMC10940573 DOI: 10.1038/s41598-024-54694-6] [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] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/15/2024] [Indexed: 03/18/2024] Open
Abstract
This study aimed to compare the outcomes of flanged intraocular lens (IOL) fixation with new IOL exchange after dislocated IOL removal and repositioned dislocated IOL in patients with IOL dislocation. Eighty-nine eyes that underwent flanged IOL fixation were retrospectively included, with 51 eyes in the exchanged IOL group and 38 eyes in the repositioned IOL group. In both groups, best-corrected visual acuity (BCVA) improved at 1, 3, 6, and 12 months postoperatively and did not differ between the two groups at any of these time points. However, at 1 week postoperatively, BCVA in the repositioned IOL group improved compared with baseline, whereas that in the exchanged IOL group did not. Moreover, there were lesser changes in the corneal endothelial cell density (ECD) and corneal astigmatism in the repositioned IOL group than in the exchanged IOL group. The IOL positions, including IOL tilt and IOL decentration, were not different between the groups. Flanged IOL fixation with new IOL exchange and with repositioned dislocated IOL for patients with IOL dislocation had similar visual outcomes and IOL position. However, the latter had a smaller corneal ECD decrease and astigmatic change. This technique was effective in treating IOL dislocation while minimizing corneal injury.
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Affiliation(s)
- Yong Koo Kang
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944, Republic of Korea
| | - Dong Ho Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944, Republic of Korea
| | | | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944, Republic of Korea
| | - Dong Hyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944, Republic of Korea
| | - Jae Rock Do
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-Ro, Jung-Gu, Daegu, 41944, Republic of Korea.
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Seo H, Hong YM, Chung WG, Park W, Lee J, Kim HK, Byeon SH, Kim DW, Park JU. Real-time in vivo monitoring of intraocular pressure distribution in the anterior chamber and vitreous chamber for diagnosis of glaucoma. Sci Adv 2024; 10:eadk7805. [PMID: 38324695 PMCID: PMC10851251 DOI: 10.1126/sciadv.adk7805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/05/2024] [Indexed: 02/09/2024]
Abstract
Glaucoma causes irreversible vision loss due to optic nerve damage and retinal cell degeneration. Since high intraocular pressure (IOP) is a major risk factor for glaucoma development, accurate IOP measurement is crucial, especially intravitreal IOP affecting the optical nerve and cells. However, conventional methods have limits in selectively and directly detecting local retina pressure. Here, we present continuous measurements of local IOP values in the anterior chamber and vitreous chamber of living animals using minimally invasive probes with pressure-sensitive transistors. After inducing glaucoma in animal models, we compared the local IOP distribution between normal and glaucomatous eyes. We also compared IOP values detected in the cornea using tonometry measurements. Our findings revealed that glaucoma induced higher IOP in the vitreous chamber than in the anterior chamber, indicating that measuring IOP in the vitreous chamber is key to the glaucoma model. This progress offers future directions for diagnosis and treatment of glaucoma.
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Affiliation(s)
- Hunkyu Seo
- Department of Materials Science and Engineering, Yonsei University College of Engineering, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul 03722, Republic of Korea
| | - Yeon-Mi Hong
- Department of Materials Science and Engineering, Yonsei University College of Engineering, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul 03722, Republic of Korea
| | - Won Gi Chung
- Department of Materials Science and Engineering, Yonsei University College of Engineering, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul 03722, Republic of Korea
| | - Wonjung Park
- Department of Materials Science and Engineering, Yonsei University College of Engineering, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul 03722, Republic of Korea
| | - Jakyoung Lee
- Department of Materials Science and Engineering, Yonsei University College of Engineering, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul 03722, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu 41944, Republic of Korea
| | - Suk Ho Byeon
- Department of Ophthalmology, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Dai Woo Kim
- Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu 41944, Republic of Korea
| | - Jang-Ung Park
- Department of Materials Science and Engineering, Yonsei University College of Engineering, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Yonsei University, Seoul 03722, Republic of Korea
- Department of Neurosurgery, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
- Graduate Program of Nano Biomedical Engineering (NanoBME), Advanced Science Institute, Yonsei University, Seoul 03722, Republic of Korea
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Lim CI, Choo HJ, Heo KN, Kim HK, Hassan MR, Sulatana S, Whiting IM, Mansbridge SC, Pirgozliev VR. Refining dietary metabolisable energy and crude protein levels in relation to duck performance and behaviour. Br Poult Sci 2024; 65:1-7. [PMID: 38047715 DOI: 10.1080/00071668.2023.2278482] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Accepted: 09/20/2023] [Indexed: 12/05/2023]
Abstract
1. The study evaluated the effect of dietary metabolisable energy (ME) content and crude protein (CP) level on the growth performance and behaviour of ducks.2. A total of 720, Cherry Valley ducks were allocated to 36 pens in groups of 20 birds. For the initial period, from 1 to 21 d age, six diets, containing a standard (SME), low (LME) and high (HME) ME of 12.14, 11.93 and 12.35 MJ/kg, and standard (SCP) or high (HCP) CP contents of 210 or 220 g/kg diet, respectively, were mixed. For the period from 22 to 42 d age, the diets contained ME of 12.98 (SME), 12.77 (LME), 13.19 (HME) MJ/kg and the levels of CP were 170 (SCP) or 180 (HCP) g/kg, respectively.3. An ME by CP interaction was seen from 1 to 21 d age in ducks fed HME + HCP diet, which had greater weight gain than those fed LME + SCP (P < 0.05). Compared to LME + SCP, dietary HME decrease feeding but increased walking behaviour compared to LME + SCP and SME + SCP (P < 0.05). High CP in LME and SME diets increased drinking behaviour (P < 0.05), but there was no change in HME diet. Compared to LME, feeding HME reduced ground pecking (P < 0.05). Feeding HME reduced feeding behaviour (P < 0.05) from 22 to 42 d age. During the same period, standing behaviour was reduced in HCP + LME (P < 0.05). Drinking was reduced in LME + SCP compared to SME + HCP and HME + HCP (P < 0.05).4. A diet formulated with HME and HCP is effective for enhancing growth performance of ducks aged 1-21 d and saving time for feeding or ground pecking, which may induce spending more time on other activities.
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Affiliation(s)
- C I Lim
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - H J Choo
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - K N Heo
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - H K Kim
- Poultry Research Institute, National Institute of Animal Science, RDA, Pyeongchang, Republic of Korea
| | - M R Hassan
- Poultry Production Research Division, Bangladesh Livestock Research Institute, Savar, Bangladesh
| | - S Sulatana
- Poultry Production Research Division, Bangladesh Livestock Research Institute, Savar, Bangladesh
| | - I M Whiting
- The National Institute of Poultry Husbandry, Harper Adams University, Newport, UK
| | - S C Mansbridge
- The National Institute of Poultry Husbandry, Harper Adams University, Newport, UK
| | - V R Pirgozliev
- The National Institute of Poultry Husbandry, Harper Adams University, Newport, UK
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Kim J, Lee J, Kim S, Yoon SH, Jo YC, Kim KH, Kim HK. Noninvasive Imaging of Conjunctival Goblet Cells as a Method for Diagnosing Dry Eye Disease in an Experimental Mouse Model. Transl Vis Sci Technol 2023; 12:22. [PMID: 38149964 PMCID: PMC10755591 DOI: 10.1167/tvst.12.12.22] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 09/11/2023] [Indexed: 12/28/2023] Open
Abstract
Purpose The purpose of this study was to evaluate a noninvasive conjunctival goblet cell (GC) imaging method for assessing dry eye disease (DED) in an experimental mouse model. Methods Moxifloxacin-based fluorescence microscopy (MBFM) was used to examine GCs noninvasively in 56 mice. Forty-two (42) DED-induced mice were divided into 2 groups and treated topically for 14 days with cyclosporine (CsA) or normal saline (NS). In vivo MBFM imaging and clinical DED evaluations were performed and goblet cell density (GCD) and goblet cell area (GCA) were obtained and compared with histological GCD using periodic acid-Schiff (PAS) staining. Correlation and receiver operating characteristic (ROC) analyses showed MBFM's high diagnostic value. Results The GCD and GCA of the DED mice obtained from in vivo MBFM imaging were highly correlated with clinical DED parameters and GCD obtained from PAS histology. The therapeutic effect of CsA, as observed by in vivo MBFM, was significant with respect to that of NS treatment. The ROC curves derived from in vivo MBFM showed high diagnostic value in assessing DED. Conclusions The proposed noninvasive method has high diagnostic value in assessing the severity of DED and the effect of treatment for this disease. Translational Relevance A noninvasive imaging method using moxifloxacin-based fluorescence microscopy was evaluated for assessing DED in an experimental mouse model. The method showed high diagnostic value in assessing the severity of DED and the effect of treatment, bridging the gap between basic research and clinical treatment. The study provides a promising tool for diagnosing and monitoring DED.
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Affiliation(s)
- Jeongho Kim
- Bio-Medical Institute, Kyungpook National University Hospital, Jung-gu, Daegu, Republic of Korea
| | - Jungbin Lee
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
| | - Seonghan Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
| | - Sook Hyun Yoon
- Department of Ophthalmology, Daegu Catholic University School of Medicine, Nam-gu, Daegu, Republic of Korea
| | - Yeong Chae Jo
- Department of Ophthalmology, Maryknoll Medical Center, Jung-gu, Busan, Republic of Korea
| | - Ki Hean Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Gyeongbuk, Republic of Korea
| | - Hong Kyun Kim
- Bio-Medical Institute, Kyungpook National University Hospital, Jung-gu, Daegu, Republic of Korea
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Jung-gu, Daegu, Republic of Korea
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Kim HK, Seo KY, Yoon KC, Choi CY, Chung TY, Hyon JY, Rendon A, Kim HS. Clinical Evaluation of a Hydrophobic Intraocular Lens Using a Preloaded Automated Injector in a Korean Population. Clin Ophthalmol 2023; 17:3353-3363. [PMID: 37941777 PMCID: PMC10629398 DOI: 10.2147/opth.s421864] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 10/09/2023] [Indexed: 11/10/2023] Open
Abstract
Purpose This study assessed post-market clinical outcomes of the Clareon monofocal intraocular lens (IOL) preloaded in the AutonoMe Delivery System in a real-world setting of Korean patients. Methods This prospective, multicenter, single-arm study in Korea was conducted from July 2020 to December 2021. Patients were ≥20 years old with unilateral or bilateral cataracts who received Clareon IOLs (CNA0T0) preloaded in an automated injector system. Best corrected distance visual acuity (BCDVA) and uncorrected distance visual acuity (UCDVA) were evaluated under photopic conditions. Surgeon delivery system preference was assessed using a survey questionnaire. Glistenings, surface haze, adverse events, posterior capsule opacification (PCO), and Nd:YAG capsulotomy rates were also assessed during the 12-month postoperative follow-up. Results Mean ± SD monocular BCDVA was 0.02 ± 0.11 and 0.00 ± 0.10 logMAR at 1 month and 12 months, respectively. BCDVA of 0.2 logMAR or better was achieved by 94.4% and 99.1% of eyes at 1 month and 12 months after implantation, respectively. Mean monocular UCDVA was 0.11 ± 0.14 and 0.07 ± 0.13 logMAR at 1 month and 12 months, respectively. UCDVA of 0.3 logMAR or better was achieved by 97.4% of eyes at 12 months after implantation. Preparation of the automated injector system was rated as "very easy" or "easy" and CNA0T0 IOL delivery was rated as "very controllable" or "controllable" by all surgeons. Only grade 0 glistenings and no surface haze were observed during the 12-month follow-up. No clinically significant PCO or Nd:YAG capsulotomy were reported throughout the study; clinically nonsignificant PCO was reported in 23% of eyes. Conclusion This 12-month real-world study of the CNA0T0 IOL and the automated injector system demonstrated excellent visual outcomes and high surgeon satisfaction.
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Affiliation(s)
- Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Kyoung Yul Seo
- Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine; Cornea Dystrophy Research Institute, Seoul, Republic of Korea
| | - Kyung Chul Yoon
- Department of Ophthalmology, Chonnam National University Medical School and Hospital, Gwangju, Republic of Korea
| | - Chul Young Choi
- Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Tae-Young Chung
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Joon Young Hyon
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | | | - Hyun Seung Kim
- Department of Ophthalmology and Visual Science, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Eom Y, Chung SH, Chung TY, Kim JY, Choi CY, Yoon KC, Ko BY, Kim HK, Kim MK, Lee HK, Song JS, Hyon JY, Seo KY, Lee JS, Kim HM. Efficacy and safety of 1% and 2% rebamipide clear solution in dry eye disease: a multicenter randomized trial. BMC Ophthalmol 2023; 23:343. [PMID: 37537533 PMCID: PMC10398964 DOI: 10.1186/s12886-023-03004-1] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 05/31/2023] [Indexed: 08/05/2023] Open
Abstract
BACKGROUND To evaluate the efficacy of 1% and 2% rebamipide clear solution in the treatment of dry eye disease (DED). METHODS Two hundred twenty patients with DED were randomly assigned to one of three groups: the 1% rebamipide, 2% rebamipide, or placebo (eye drops containing the same ingredients, except for the active components). Each eye drop was instilled four times daily for 12 weeks. Changes in tear film break-up time (TBUT), corneal and conjunctival staining score, Schirmer 1 test, and the Ocular Surface Disease Index (OSDI) from baseline to 12-week visit between the study groups were compared for efficacy assessment. RESULTS The mean age of study patients was 43.8±14.2 years. The 1% and 2% rebamipide groups showed greater improvement in TBUT (1.99±1.87 and 2.02±2.21 s) at 12 weeks from baseline than the placebo group (1.25±2.93 s). The 2% rebamipide group showed greater improvement in the corneal staining score (- 3.15±2.00) at 12 weeks from baseline than the placebo group (- 2.85±1.80). The 1% and 2% rebamipide groups showed improvement in Schirmer 1 test (1.27±3.86 and 1.50±4.14 mm) at 12 weeks of treatment, but not the placebo group (0.55±2.99 mm). Both the rebamipide groups and the placebo group showed significantly improved OSDI after treatment for 12 weeks; however, there was no significant difference among the three groups. CONCLUSIONS 1% and 2% rebamipide clear solutions are an effective therapeutic option for improving TBUT and tear volume, and stabilizing the corneal staining score in DED.
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Grants
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
- KSR-001 Kukje Pharma (Gyeonggi-do, Republic of Korea) and Samil Co. Ltd. (Seoul, Republic of Korea)
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Affiliation(s)
- Youngsub Eom
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea
- Department of Ophthalmology, Korea University Ansan Hospital, Ansan, Gyeonggi-do Republic of Korea
| | - So Hyang Chung
- Department of Ophthalmology, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Tae-Young Chung
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Jae Yong Kim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Chul Young Choi
- Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kyung Chul Yoon
- Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Byung Yi Ko
- Department of Ophthalmology, Konyang University College of Medicine, Daejeon, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Ophthalmology, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hyung Keun Lee
- Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Suk Song
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea
- Department of Ophthalmology, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Joon Young Hyon
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Republic of Korea
- Department of Ophthalmology, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - Kyoung Yul Seo
- Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jong Soo Lee
- Department of Ophthalmology, Pusan National University College of Medicine, Pusan, Republic of Korea
| | - Hyo Myung Kim
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea
- Department of Ophthalmology, Korea University Anam Hospital, Seoul, Republic of Korea
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Kim M, Kim HK, Kim WJ. The subjective controllability of exotropia and its effect on surgical outcomes in patients with intermittent exotropia. BMC Ophthalmol 2023; 23:125. [PMID: 36978009 PMCID: PMC10045050 DOI: 10.1186/s12886-023-02873-w] [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: 04/20/2022] [Accepted: 03/21/2023] [Indexed: 03/30/2023] Open
Abstract
BACKGROUND/AIMS We evaluate the clinical characteristics of intermittent exotropia with controllability and compare surgical outcomes between patients with and without controllability. METHODS We reviewed the medical records of patients aged 6-18 years with intermittent exotropia who underwent surgery between September 2015 and September 2021. Controllability was defined as the patient's subjective awareness of exotropia or diplopia associated with the presence of exotropia and ability to instinctively correct the ocular exodeviation. Surgical outcomes were compared between patients with and without controllability, with a favorable surgical outcome defined as an ocular deviation between ≤ 10 PD of exotropia and ≤ 4 PD of esotropia at distance and near. RESULTS Among 521 patients, 130 (25%, 130/521) had controllability. The mean age of onset (7.7 years) and surgery (9.9 years) were higher in patients with controllability than in those without controllability (p < 0.001). The mean control scores of patients with controllability (distance: 1.9, near: 1.5) were lower compared with patients without controllability (distance: 3.0, near: 2.2), reflecting a better level of control. Patients with controllability had a better surgical outcome than those without controllability, as analyzed by log-rank test (p < 0.001). Larger preoperative ocular exodeviation at distance (hazard ratio [HR] = 1.083, confidence interval [CI] = 1.018-1.151, p = 0.012) and near (HR = 1.102, CI = 1.037-1.172, p = 0.002) were significantly related to recurrence in patients with controllability. CONCLUSIONS Patients with controllability showed better surgical outcomes, later exotropia onset, and better level of control than patients without controllability. Preoperative ocular exodeviation was a significant factor influencing favorable outcomes in patients with controllable exotropia.
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Affiliation(s)
- Mirae Kim
- Nune Eye Hospital, Daegu, South Korea.
- Department of Medicine, The Graduate School, Kyungpook National University, Daegu, South Korea.
| | - Hong Kyun Kim
- Department of Medicine, The Graduate School, Kyungpook National University, Daegu, South Korea
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Won Jae Kim
- Department of Ophthalmology, Yeungnam University College of Medicine, Daegu, South Korea.
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Eom Y, Yoon KC, Kim HK, Song JS, Hyon JY, Kim HM. A Multicenter, Randomized, Double-Blind Evaluation of the Efficacy of TJO-087 Versus 0.05% Cyclosporine A in Moderate to Severe Dry Eye. J Ocul Pharmacol Ther 2023; 39:27-35. [PMID: 36450107 DOI: 10.1089/jop.2022.0119] [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: 12/02/2022] Open
Abstract
Purpose: To compare the efficacy and ocular tolerability of a 0.08% nanoemulsion cyclosporine A (CsA) (TJO-087) once daily versus a conventional 0.05% emulsion CsA twice daily in dry eye disease. Methods: 178 patients with dry eye disease were randomly assigned to one of two groups: the TJO-087 or CsA0.05% group. Changes in the Ocular Surface Disease Index (OSDI), tear film break-up time (TBUT), corneal and conjunctival staining scores, and Schirmer test scores from baseline to the 32-week visit were compared between both groups. To evaluate ocular tolerability of the study formulations, 7 symptoms (stinging/burning, itching, blurred vision, sandiness/grittiness, dryness, light sensitivity, and pain or soreness) were evaluated (the higher the score, the lower the tolerability) at each follow-up visit. Results: A total of 155 eyes of 155 patients were enrolled. The TJO-087 and CsA0.05% groups showed significant improvement in OSDI, TBUT, ocular surface staining, and Schirmer test scores at 32 weeks from baseline. There was no difference in the extent of improvement in all efficacy parameters. There were no differences in the ocular tolerability scores between the 2 groups at all visits, except that the itching score was higher in the TJO-087 group than in the CsA0.05% group at week 8. Conclusions: Using topical 0.08% CsA once daily is an effective therapeutic option for improving the symptoms and signs in dry eye disease, with a tolerability comparable with that of conventional 0.05% CsA. This trial was registered at the US National Library of Medicine ClinicalTrials.gov (http://clinicaltrial.gov) as NCT05245604 (registration date: 19/06/2020).
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Affiliation(s)
- Youngsub Eom
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea.,Department of Ophthalmology, Korea University Ansan Hospital, Gyeonggi-do, Republic of Korea
| | - Kyung Chul Yoon
- Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jong Suk Song
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea.,Department of Ophthalmology, Korea University Guro Hospital, Seoul, Republic of Korea
| | - Joon Young Hyon
- Department of Ophthalmology, Seoul National University College of Medicine, Seongnam, Republic of Korea
| | - Hyo Myung Kim
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea.,Department of Ophthalmology, Korea University Anam Hospital, Seoul, Republic of Korea
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10
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Jung SS, Son J, Yi SJ, Kim K, Park HS, Kang HW, Kim HK. Development of Müller cell-based 3D biomimetic model using bioprinting technology. Biomed Mater 2022; 18. [PMID: 36343367 DOI: 10.1088/1748-605x/aca0d5] [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: 08/17/2022] [Accepted: 11/07/2022] [Indexed: 11/09/2022]
Abstract
Müller cells are the principal glial cells for the maintenance of structural stability and metabolic homeostasis in the human retina. Although variousin vitroexperiments using two-dimensional (2D) monolayer cell cultures have been performed, the results provided only limited results because of the lack of 3D structural environment and different cellular morphology. We studied a Müller cell-based 3D biomimetic model for use in experiments on thein vivo-like functions of Müller cells within the sensory retina. Isolated primary Müller cells were bioprinted and a 3D-aligned architecture was induced, which aligned Müller cell structure in retinal tissue. The stereographic and functional characteristics of the biomimetic model were investigated and compared to those of the conventional 2D cultured group. The results showed the potential to generate Müller cell-based biomimetic models with characteristic morphological features such as endfeet, soma, and microvilli. Especially, the 3D Müller cell model under hyperglycemic conditions showed similar responses as observed in thein vivodiabetic model with retinal changes, whereas the conventional 2D cultured group showed different cytokine and growth factor secretions. These results show that our study is a first step toward providing advanced tools to investigate thein vivofunction of Müller cells and to develop complete 3D models of the vertebrate retina.
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Affiliation(s)
- Sung Suk Jung
- Animal and Plant Quarantine Agency, 177 Hyeoksin 8-ro, Gimcheon City, Gyeongsangbuk-do 39660, Republic of Korea
| | - Jeonghyun Son
- Ulsan National Institute of Science and Technology, 50, UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
| | - Soo Jin Yi
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Republic of Korea.,Bio-Medical Institute, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu 41944, Republic of Korea.,Department of Biomedical Science, The Graduate School, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Republic of Korea
| | - Kyungha Kim
- Ulsan National Institute of Science and Technology, 50, UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
| | - Han Sang Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Republic of Korea
| | - Hyun-Wook Kang
- Ulsan National Institute of Science and Technology, 50, UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Republic of Korea.,Bio-Medical Institute, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu 41944, Republic of Korea.,Department of Biomedical Science, The Graduate School, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, Republic of Korea
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Lee HJ, Park CS, Lee S, Park JB, Kim HK, Park SJ, Kim YJ, Lee SP. Systemic proinflammatory-profibrotic response in aortic stenosis patients with diabetes and its relationship with myocardial remodeling and clinical outcome. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1621] [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] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
It is unclear whether and how diabetes mellitus may aggravate myocardial fibrosis and remodeling in the pressure-overloaded heart. We investigated the impact of diabetes on the prognosis of aortic stenosis (AS) patients and its underlying mechanisms using comprehensive noninvasive imaging studies and plasma proteomics.
Methods
Severe AS patients undergoing both echocardiography and cardiovascular magnetic resonance (CMR) (n=253 of which 66 had diabetes) comprised the imaging cohort. The degree of replacement and diffuse interstitial fibrosis by late gadolinium enhancement (LGE) and extracellular volume fraction (ECV) was quantified using CMR. Plasma samples were analyzed with the multiplex proximity extension assay for 92 proteomic biomarkers in a separate biomarker cohort of severe AS patients (n=100 of which 27 had diabetes).
Results
In the imaging cohort, diabetic patients were older (70.4±6.8 vs. 66.7±10.1 years) and had a higher prevalence of ischemic heart disease (28.8% vs. 9.1%), with more advanced ventricular diastolic dysfunction. On CMR, diabetic patients had increased replacement and diffuse interstitial fibrosis (LGE% 0.3 [0.0–1.6] versus 0.0 [0.0–0.5], p=0.009; ECV% 27.9 [25.7–30.1] versus 26.7 [24.9–28.5], p=0.025) (Figure 1).
Plasma proteomics analysis of the biomarker cohort revealed that 9 proteins (E-selectin, interleukin-1 receptor type 1, interleukin-1 receptor type 2, galectin-4, intercellular adhesion molecule 2, integrin beta-2, galectin-3, growth differentiation factor 15, and cathepsin D) are significantly elevated in diabetic AS patients (Figure 2). Pathway over-representation analyses of the plasma proteomics with Gene Ontology terms indicated that pathways related to inflammatory response and extracellular matrix components were enriched, suggesting that diabetes is associated with systemic effects that evoke proinflammatory and profibrotic response to the pressure-overloaded myocardium.
During follow-up (median 6.3 years [IQR 5.2–7.2]) of the imaging cohort, 232 patients received aortic valve replacement (AVR) with 53 unexpected heart failure admissions or death. Diabetes was a significant predictor of heart failure and death, independent of clinical covariates and AVR (hazard ratio 1.88, 95% confidence interval 1.06–3.31, p=0.030).
Conclusion
Plasma proteomic analyses indicate that diabetes potentiates the systemic proinflammatory and profibrotic milieu in AS patients. These systemic biological changes underlie the increase of myocardial fibrosis, diastolic dysfunction, and worse clinical outcomes in severe AS patients with concomitant diabetes.
Funding Acknowledgement
Type of funding sources: Foundation. Main funding source(s): National Research Foundation of Korea
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Affiliation(s)
- H J Lee
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - C S Park
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S Lee
- Asan Medical Center, Internal Medicine , Seoul , Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Cardiovascular Imaging Center , Seoul , Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Internal Medicine , Seoul , Korea (Republic of)
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Yeung S, Kim HK, Carleton A, Munro J, Ferguson D, Monk AP, Zhang J, Besier T, Fernandez J. Integrating wearables and modelling for monitoring rehabilitation following total knee joint replacement. Comput Methods Programs Biomed 2022; 225:107063. [PMID: 35994872 DOI: 10.1016/j.cmpb.2022.107063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/24/2022] [Accepted: 08/08/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND AND OBJECTIVE Wearable inertial devices integrated with modelling and cloud computing have been widely adopted in the sports sector, however, their use in the health and medical field has yet to be fully realised. To date, there have been no reported studies concerning the use of wearables as a surrogate tool to monitor knee joint loading during recovery following a total knee joint replacement. The objective of this study is to firstly evaluate if peak tibial acceleration from wearables during gait is a good surrogate metric for computer modelling predicted functional knee loading; and secondly evaluate if traditional clinical patient related outcomes measures are consistent with wearable predictions. METHODS Following ethical approval, four healthy participants were used to establish the relationship between computer modelling predicted knee joint loading and wearable measured tibial acceleration. Following this, ten patients who had total knee joint replacements were then followed during their 6-week rehabilitation. Gait analysis, wearable acceleration, computer models of knee joint loading, and patient related outcomes measures including the Oxford knee score and range of motion were recorded. RESULTS A linear correlation (R2 of 0.7-0.97) was observed between peak tibial acceleration (from wearables) and musculoskeletal model predicted knee joint loading during gait in healthy participants first. Whilst patient related outcome measures (Oxford knee score and patient range of motion) were observed to improve consistently during rehabilitation, this was not consistent with all patient's tibial acceleration. Only those patients that exhibited increasing peak tibial acceleration over 6-weeks rehabilitation were positively correlated with the Oxford knee score (R2 of 0.51 to 0.97). Wearable predicted tibial acceleration revealed three patients with a consistent knee loading, five patients with improving knee loading, and two patients with declining knee loading during recovery. Hence, 20% of patients did not present with satisfactory joint loading following total knee joint replacement and this was not detected with current patient related outcome measures. CONCLUSIONS The use of inertial measurement units or wearables in this study provided additional insight into patients who were not exhibiting functional improvements in joint loading, and offers clinicians an 'off-site' early warning metric to identify potential complications during recovery and provide the opportunity for early intervention. This study has important implications for improving patient outcomes, equity, and for those who live in rural regions.
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Affiliation(s)
- S Yeung
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - H K Kim
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; School of Kinesiology, Louisiana State University, United States
| | - A Carleton
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - J Munro
- Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand; Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - D Ferguson
- Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - A P Monk
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand; Auckland City Hospital, Auckland District Health Board, Auckland, New Zealand
| | - J Zhang
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
| | - T Besier
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand; Department of Engineering Science, University of Auckland, Auckland, New Zealand
| | - J Fernandez
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand; Department of Engineering Science, University of Auckland, Auckland, New Zealand.
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13
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Song H, Shin H, Seo H, Park W, Joo BJ, Kim J, Kim J, Kim HK, Kim J, Park J. Wireless Non-Invasive Monitoring of Cholesterol Using a Smart Contact Lens. Adv Sci (Weinh) 2022; 9:e2203597. [PMID: 35975449 PMCID: PMC9534953 DOI: 10.1002/advs.202203597] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 08/02/2022] [Indexed: 06/15/2023]
Abstract
Herein, a wireless and soft smart contact lens that enables real-time quantitative recording of cholesterol in tear fluids for the monitoring of patients with hyperlipidemia using a smartphone is reported. This contact lens incorporates an electrochemical biosensor for the continuous detection of cholesterol concentrations, stretchable antenna, and integrated circuits for wireless communication, which makes a smartphone the only device required to operate this lens remotely without obstructing the wearer's vision. The hyperlipidemia rabbit model is utilized to confirm the correlation between cholesterol levels in tear fluid and blood and to confirm the feasibility of this smart contact lens for diagnostic application of cholesterol-related diseases. Further in vivo tests with human subjects demonstrated its good biocompatibility, wearability, and reliability as a non-invasive healthcare device.
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Affiliation(s)
- Hayoung Song
- Department of Materials Science and EngineeringCenter for Nanomedicine Institute for Basic Science (IBS)Yonsei UniversitySeoul03722Republic of Korea
| | - Haein Shin
- Department of Materials Science and EngineeringCenter for Nanomedicine Institute for Basic Science (IBS)Yonsei UniversitySeoul03722Republic of Korea
| | - Hunkyu Seo
- Department of Materials Science and EngineeringCenter for Nanomedicine Institute for Basic Science (IBS)Yonsei UniversitySeoul03722Republic of Korea
| | - Wonjung Park
- Department of Materials Science and EngineeringCenter for Nanomedicine Institute for Basic Science (IBS)Yonsei UniversitySeoul03722Republic of Korea
| | - Byung Jun Joo
- Department of Materials Science and EngineeringCenter for Nanomedicine Institute for Basic Science (IBS)Yonsei UniversitySeoul03722Republic of Korea
| | - Jeongho Kim
- Department of Biomedical ScienceThe Graduate SchoolKyungpook National University680 Gukchebosang‐ro, Jung‐guDaegu41944Republic of Korea
| | - Jeonghyun Kim
- Department of Electronics Convergence EngineeringKwangwoon UniversitySeoul01897Republic of Korea
| | - Hong Kyun Kim
- Department of Biomedical ScienceThe Graduate SchoolKyungpook National University680 Gukchebosang‐ro, Jung‐guDaegu41944Republic of Korea
- Department of OphthalmologyBio‐Medical InstituteSchool of MedicineKyungpook National University Hospital130 Dongdeok‐ro, Jung‐guDaegu41944Republic of Korea
| | - Jayoung Kim
- Department of Medical EngineeringCollege of MedicineYonsei UniversitySeoul03722Republic of Korea
| | - Jang‐Ung Park
- Department of Materials Science and EngineeringCenter for Nanomedicine Institute for Basic Science (IBS)Yonsei UniversitySeoul03722Republic of Korea
- KIURI InstituteYonsei UniversitySeoul03722Republic of Korea
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Eom Y, Lim DH, Kim DH, Byun YS, Na KS, Kim SJ, Rho CR, Chung SH, Lee JE, Cho KJ, Chung TY, Kim EC, Shin YJ, Lee SM, Cho YK, Yoon KC, You IC, Ko BY, Kim HK, Song JS, Lee DH. Comparison of the Optimized Intraocular Lens Constants Calculated by Automated and Manifest Refraction for Korean. J Korean Ophthalmol Soc 2022. [DOI: 10.3341/jkos.2022.63.9.747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose: To derive the optimized intraocular lens (IOL) constants from automated and manifest refraction after cataract surgery in Korean patients, and to evaluate whether there is a difference in optimized IOL constants according to the refraction method.Methods: This retrospective multicenter cohort study enrolled 4,103 eyes of 4,103 patients who underwent phacoemulsification and in-the-bag IOL implantation at 18 institutes. Optimized IOL constants for the SRK/T, Holladay, Hoffer Q, and Haigis formulas were calculated via autorefraction or manifest refraction of samples using the same biometry and IOL. The IOL constants derived from autorefraction and manifest refraction were compared.Results: Of the 4,103 eyes, the majority (62.9%) were measured with an IOLMaster 500 followed by an IOLMaster 700 (15.2%). A total of 33 types of IOLs were used, and the Tecnis ZCB00 was the most frequently used (53.0%). There was no statistically significant difference in IOL constants derived from autorefraction and manifest refraction when IOL constants were optimized with a large number of study subjects. On the other hand, optimized IOL constants derived from autorefraction were significantly smaller than those from manifest refraction when the number of subjects was small.Conclusions: It became possible to use the IOL constants optimized from Koreans to calculate the IOL power. However, if the IOL constant is optimized using autorefraction in a small sample group, the IOL constant tends to be small, which may lead to refractive error after surgery.
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Seong D, Yi S, Han S, Lee J, Park S, Hwang YH, Kim J, Kim HK, Jeon M. Target ischemic stroke model creation method using photoacoustic microscopy with simultaneous vessel monitoring and dynamic photothrombosis induction. Photoacoustics 2022; 27:100376. [PMID: 35734368 PMCID: PMC9207728 DOI: 10.1016/j.pacs.2022.100376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 06/02/2022] [Indexed: 06/02/2023]
Abstract
The ischemic stroke animal model evaluates the efficacy of reperfusion and neuroprotective strategies for ischemic injuries. Various conventional methods have been reported to induce the ischemic models; however, controlling specific neurological deficits, mortality rates, and the extent of the infarction is difficult as the size of the affected region is not precisely controlled. In this paper, we report a single laser-based localized target ischemic stroke model development method by simultaneous vessel monitoring and photothrombosis induction using photoacoustic microscopy (PAM), which has minimized the infarct size at precise location with high reproducibility. The proposed method has significantly reduced the infarcted region by illuminating the precise localization. The reproducibility and validity of suggested method have been demonstrated through repeated experiments and histological analyses. These results demonstrate that our method can provide the ischemic stroke model closest to the clinical pathology for brain ischemia research from inducement, occurrence mechanisms to the recovery process.
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Affiliation(s)
- Daewoon Seong
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, the Republic of Korea
| | - Soojin Yi
- Bio-Medical Institute, Kyungpook National University Hospital, Daegu 41404, the Republic of Korea
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu 41944, the Republic of Korea
- Department of Biomedical Science, The Graduate School, Kyungpook National University, Daegu 41944, the Republic of Korea
| | - Sangyeob Han
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, the Republic of Korea
- Institute of Biomedical Engineering, School of Medicine, Kyungpook National University, Daegu 41566, the Republic of Korea
| | - Jaeyul Lee
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, the Republic of Korea
- Department of Bioengineering, University of California, Los Angeles, CA 90095, USA
| | - Sungjo Park
- Pohang Innotown Center, Pohang University of Science and Technology, Pohang 37673, the Republic of Korea
| | - Yang-Ha Hwang
- Department of Neurology, School of Medicine, Kyungpook National University, Daegu 41944, the Republic of Korea
| | - Jeehyun Kim
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, the Republic of Korea
| | - Hong Kyun Kim
- Bio-Medical Institute, Kyungpook National University Hospital, Daegu 41404, the Republic of Korea
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu 41944, the Republic of Korea
- Department of Biomedical Science, The Graduate School, Kyungpook National University, Daegu 41944, the Republic of Korea
| | - Mansik Jeon
- School of Electronic and Electrical Engineering, College of IT Engineering, Kyungpook National University, Daegu 41566, the Republic of Korea
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Lee J, Kim S, Kim J, Son BJ, Yoon CH, Kim HK, Kim KH. Moxifloxacin-Based Extended Depth-of-Field Fluorescence Microscopy for Real-Time Conjunctival Goblet Cell Examination. IEEE Trans Med Imaging 2022; 41:2004-2008. [PMID: 35167445 DOI: 10.1109/tmi.2022.3151944] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Conjunctival goblet cells (CGCs) are mucin-secreting cells in the eye and play essential roles for ocular surface homeostasis. Since various ocular surface pathologies are related to CGC dysfunction, CGC examination is important for the evaluation of ocular surface conditions. Recently we introduced moxifloxacin-based fluorescence microscopy (MBFM) for non-invasive CGC imaging. However, the imaging speed was up to 1 frame per second (fps) and needed to be improved for clinical applications. In this study, we developed a high-speed moxifloxacin-based, extended depth-of-field (EDOF) microscopy system that operates at a maximum imaging speed of 15 fps. The system used a deformable mirror for the high-speed axial sweeping of focal plane during single-frame acquisitions. The acquired images contained both in-focus and out-of-focus information, and deconvolution was used to filter the in-focus information. The system had a DOF of 800 [Formula: see text], field-of-view of 1.2 mm ×1.2 mm, and resolution of [Formula: see text]. Its performance was demonstrated by real-time, breathing-motion-insensitive CGC imaging of mouse and rabbit models, in vivo. High-speed EDOF microscopy has potentials for non-invasive, real-time CGC examinations of human subjects.
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Yae CG, Jung JU, Park MH, Jo YC, Kim HK. Clinical Characteristics of the Eye with Fuch’s Corneal Endothelial Dystrophy after Descemet Stripping Only. J Korean Ophthalmol Soc 2022. [DOI: 10.3341/jkos.2022.63.6.519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose: To report the effect of removal of a central descemet membrane on the endothelial function, morphology, and clinical symptoms of eyes with Fuch’s endothelial dystrophy.Methods: From August 2019 to January 2021, patients with Fuch’s endothelial dystrophy, i.e., with confluent, central corneal guttae and cataracts that required surgery, underwent phacoemulsification, intraocular lens implantation, and central descemet membrane stripping. To evaluate the effect of descemet stripping only (DSO), visual acuity and intraocular pressure were measured, and corneal pachymetry, slit-lamp and specular microscopy, and anterior segment optical coherence tomography performed, before surgery and at 1, 7, and 30 days and 3 and 6 months after surgery.Results: Seven patients (10 eyes) were included. Visual acuity improved from 1.01 ± 0.40 logarithm of the minimum angle of resolution (logMAR) preoperatively to 0.33 ± 0.22 logMAR 6 months after surgery (p = 0.008). The mean central corneal thickness decreased from 578.50 ± 36.88 μm preoperatively to 568.50 ± 48.61 μm 6 months after surgery; the difference was not significant (p = 0.507). The endothelial cell count increased significantly from 663.80 ± 356.40/mm2 preoperatively to 1,082.00 ± 274.46/mm2 6 months after surgery (p = 0.043).Conclusions: DSO can serve as a useful alternative when corneal transplantation is not possible in patients with Fuch’s endothelial dystrophy, but treatment efficacy and safety require further evaluation.
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Kim S, Ko BY, Koh JW, Kim EC, Kim HK, Shin YJ, Song JS, Lee DH, Lee JE, Lee HK, Chung SH, Kim HS. Comparison of a preservative-free nonsteroidal anti-inflammatory drug and preservative-free corticosteroid after uneventful cataract surgery: multicenter, randomized, evaluator-blinded clinical trial. J Cataract Refract Surg 2022; 48:710-716. [PMID: 34629379 PMCID: PMC9119399 DOI: 10.1097/j.jcrs.0000000000000841] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 10/05/2021] [Indexed: 12/05/2022]
Abstract
PURPOSE To compare the efficacy of nonsteroidal anti-inflammatory drugs (NSAIDs) and steroidal eyedrops for inflammation management after cataract surgery using slitlamp indicators. SETTING 11 eye centers in South Korea. DESIGN Randomized prospective multicenter study with a blinded evaluator. METHOD In 125 (250 eyes) patients who underwent cataract surgery, bromfenac sodium hydrate 0.1% (NSAID group) was applied twice a day in 1 eye, whereas the other eye was treated with fluorometholone 0.1% (steroid group), 4 times a day for 4 weeks postoperatively. The primary efficacy outcome was the presence of anterior chamber cells and flare at 1 week postoperatively. Anterior chamber cells and flare at 4 to 8 weeks, corrected distance visual acuity, central corneal thickness, conjunctival hyperemia, dry eye parameters, foveal thickness, and ocular and visual discomfort were evaluated as secondary outcomes. RESULTS At week 1, residual anterior chamber inflammation was not statistically significantly different between the groups (-1.03 ± 1.27 vs -0.95 ± 1.24, P = .4850). However, the NSAID group recovered from conjunctival hyperemia more rapidly than the steroid group (0.30 ± 0.52 vs 0.44 ± 0.81, P = .0144 at week 1). The increase in central corneal thickness in the NSAID group was less than that in the steroid group 1 week postoperatively (7.87 ± 22.46 vs 29.47 ± 46.60 μm, P < .0001). The change in foveal thickness in the NSAID group was significantly less than that in the steroid group (18.11 ± 68.19 vs 22.25 ± 42.37 μm, P = .0002). Lower levels of postoperative ocular and visual discomfort were reported in the NSAID group than in the steroid group under treatment. CONCLUSIONS Preservative-free bromfenac was as effective as preservative-free fluorometholone eyedrops in anterior chamber inflammation control and showed better signs and symptoms after cataract surgery.
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Affiliation(s)
- Seonjoo Kim
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Byung-Yi Ko
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Jae Woong Koh
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Eun Chul Kim
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Hong Kyun Kim
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Young Joo Shin
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Jong-Suk Song
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Do Hyung Lee
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Ji Eun Lee
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Hyung Keun Lee
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - So-Hyang Chung
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
| | - Hyun Seung Kim
- From the Department of Ophthalmology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea (S.J. Kim, Chung, H.S. Kim); Department of Ophthalmology, Konyang University College of Medicine, Daejeon, South Korea (Ko); Department of Ophthalmology, Chosun University College of Medicine, Gwangju, South Korea (Koh); Department of Ophthalmology, Bucheon St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea (E.C. Kim); Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea (H.K. Kim); Department of Ophthalmology, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, South Korea (Shin); Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea (Song); Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea (D.H. Lee); Department of Ophthalmology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan, South Korea (J.E. Lee); Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea (H.K. Lee)
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Kim JY, Jung JU, Jo YC, Park MH, Kim KY, Kim HK. Impact of Social Distancing and Personal Hygiene on the Prevalence of Epidemic Keratoconjunctivitis during the COVID-19 Pandemic. J Korean Ophthalmol Soc 2022. [DOI: 10.3341/jkos.2022.63.2.126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Purpose: To analyze the change in the weekly incidence of epidemic keratoconjunctivitis (EKC) per 1,000 outpatients during the coronavirus disease 2019 (COVID-19) pandemic by comparing the mean weekly proportion of EKC of 2020 with that from 2016 to 2019.Methods: Using data from the Korea Disease Control and Prevention Agency for 2016-2020, we analyzed the weekly proportion of EKC per 1,000 outpatients. The data were also analyzed according to age, semester and vacation periods, region, and social distancing stages. For the Daegu data, we also analyzed the effects of social distancing in an area.Results: The mean weekly proportion of EKC per 1,000 outpatients in 2020 was lower than in previous years for all ages (2016-2019 19.77 ± 7.17‰, 2020 7.28 ± 2.97‰; p < 0.001). During the semester, the mean difference between 2016-2019 and 2020 was significant, particularly for preschool children. In Daegu, the weekly proportion of EKC per 1,000 outpatients during the extra 12-18 weeks of social distancing was significantly lower (2016-2019, 18.78 ± 6.61‰; 2020, 8.94 ± 2.92‰; p < 0.001).Conclusions: The public health interventions implemented during the COVID-19 outbreak not only reduced the prevalence of COVID-19 but also reduced the prevalence of EKC. Therefore, maintaining hygiene principles and standard precautions may help prevent EKC.
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20
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Jun JH, Bang SP, Park HS, Yoon D, Ahn JY, Kim SJ, Kim HK. A randomized multicenter clinical evaluation of sequential application of 0.3% and 0.15% hyaluronic acid for treatment of dry eye. Jpn J Ophthalmol 2021; 66:58-67. [PMID: 34843023 DOI: 10.1007/s10384-021-00885-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 01/14/2021] [Accepted: 09/17/2021] [Indexed: 01/02/2023]
Abstract
PURPOSE We report the clinical efficacy of sequential applications of 0.3% and 0.15% unpreserved hyaluronic acid (HA) for the treatment of dry eye disease (DED). STUDY DESIGN Randomized clinical trial. METHODS Patients over 19 years of age with DED level 2 or higher, corneal fluorescein staining (CFS) score > 1, and tear break-up time (TBUT) < 10 s were included. Seventy-six patients were randomly assigned to the 0.15% HA group, 0.3% HA group, or combination group. Each group applied two drops of 0.15% or 0.3% HA, or a single drop of both 0.3% and 0.15% HA. Patients were evaluated using the ocular surface disease index (OSDI), CFS and conjunctival fluorescein stain score, TBUT, and blurring/discomfort after application at baseline, 4 weeks, and 8 weeks. RESULTS The combination group had the greatest improvement in CFS score from baseline to 8 weeks, compared with the 0.15% and 0.3% HA group (p < 0.001). The combined CFS-OSDI responder rates of the combination group (CFS score = 0 and OSDI ≥ 50% improvement at 8 weeks) were significantly higher than those of the 0.15% and 0.3% groups (p = 0.037). At 4 and 8 weeks, blurring after application in both the 0.3% and combination groups was significantly higher than in the 0.15% group, despite no difference between the 0.3% and combination groups. There were no differences in CFS and conjunctival staining score, TBUT, or OSDI within the three groups at baseline, 4 weeks, and 8 weeks. CONCLUSIONS Sequential application of 0.3% and 0.15% HA improved symptoms/signs in moderate to severe DED patients.
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Affiliation(s)
- Jong Hwa Jun
- Department of Ophthalmology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Seung Pil Bang
- Department of Ophthalmology, Keimyung University School of Medicine, Daegu, Republic of Korea
| | - Han Sang Park
- Department of Ophthalmology, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Donghee Yoon
- Department of Ophthalmology, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Ja Young Ahn
- Department of Ophthalmology, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Seong Jae Kim
- Department of Ophthalmology, Gyeongsang National University School of Medicine, Jinju, Republic of Korea.,Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, Kyungpook National University Hospital, Daegu, Republic of Korea. .,Department of Ophthalmology, School of Medicine, Kyungpook National University, #130 Dongdeok-ro, Joong-gu, Daegu, 41944, Republic of Korea.
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21
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Salih L, Sabaratnam R, Kim HK, Bevan K. 491 Comparison of Pandemic and Pre-pandemic Practices of Managing Acute Appendicitis. Br J Surg 2021. [PMCID: PMC8524536 DOI: 10.1093/bjs/znab259.466] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Aim Acute appendicitis (AA) is a common indication for abdominal surgery, with more than 30,000 appendicectomies performed in England per year. However, SARS-CoV-2 (COVID-19) changed usual surgical practices following advice to minimise laparoscopic surgery, and instead favouring conservative management, or open surgery for AA. Method In this study, we compared the management of 50 patients with suspected/confirmed AA during the first wave of the COVID-19 pandemic at a district general hospital (DGH) with our usual practices, against 50 patients admitted with suspected/confirmed AA during a similar time period, one year prior to the pandemic. Results Demographics of patients in both groups were comparable with median age of 34 in the pandemic vs 32.5 in the pre-pandemic group. 74% of patients in the pandemic group (PG) underwent imaging to confirm appendicitis, compared to 58% of patients in the pre-pandemic group (PPG). 64% of PG patients were treated conservatively, compared to 8% in PPG patients. Outcomes demonstrated re-attendance events of 12% in the PG, as compared to 10% in the PPG, although the follow up period was longer in the PPG. Despite a significantly smaller number of patients managed surgically during the pandemic, 27% of patients undergoing appendicectomies had post-operative complications in the PG, as compared to 7% in the PPG. Conclusions During the pandemic, more patients at our DGH with AA were treated conservatively, more patients had re-attendance events and post-operative complications when compared to patients in the pre-pandemic group.
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Affiliation(s)
- L Salih
- Bedford Hospital, Bedford, United Kingdom
| | | | - H K Kim
- Bedford Hospital, Bedford, United Kingdom
| | - K Bevan
- Bedford Hospital, Bedford, United Kingdom
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22
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Park I, Park HS, Kim HK, Chung WK, Kim K. Real-time measurement of intraocular pressure variation during automatic intravitreal injections: An ex-vivo experimental study using porcine eyes. PLoS One 2021; 16:e0256344. [PMID: 34437572 PMCID: PMC8389368 DOI: 10.1371/journal.pone.0256344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 08/04/2021] [Indexed: 11/18/2022] Open
Abstract
PURPOSE To measure needle insertion force and change in intraocular pressure (IOP) in real-time during intravitreal injection (IVI). The effects of needle size, insertion speed, and injection rate to IOP change were investigated. METHODS Needle insertion and fluid injection were performed on 90 porcine eyeballs using an automatic IVI device. The IVI conditions were divided according to needle sizes of 27-gauge (G), 30G, and 33G; insertion speeds of 1, 2, and 5 mm/s; and injection rates of 0.01, 0.02, and 0.05 mL/s. Insertion force and IOP were measured in real-time using a force sensor and a pressure transducer. RESULTS The peak IOP was observed when the needle penetrated the sclera; the average IOP elevation was 96.3, 67.1, and 59.4 mmHg for 27G, 30G, and 33G needles, respectively. An increase in insertion speed caused IOP elevation at the moment of penetration, but this effect was reduced as needle size decreased: 109.8-85.9 mmHg in 27G for 5-1 mm/s (p = 0.0149) and 61.8-60.7 mmHg in 33G for 5-1 mm/s (p = 0.8979). Injection speed was also related to IOP elevation during the stage of drug injection: 16.65 and 11.78 mmHg for injection rates of 0.05 and 0.01 mL/s (p < 0.001). CONCLUSION The presented data offers an understanding of IOP changes during each step of IVI. Slow needle insertion can reduce IOP elevation when using a 27G needle. Further, the injection rate must be kept low to avoid IOP elevations during the injection stage.
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Affiliation(s)
- Ikjong Park
- Department of Mechanical Engineering, POSTECH, Pohang, Korea
| | - Han Sang Park
- Department of Ophthalmology, Kyungpook National University Hospital, Daegu, Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, Kyungpook National University Hospital, Daegu, Korea
| | - Wan Kyun Chung
- Department of Mechanical Engineering, POSTECH, Pohang, Korea
| | - Keehoon Kim
- Department of Mechanical Engineering, POSTECH, Pohang, Korea
- * E-mail:
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23
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Kim HK, Ku SY, Kim SH, Suh CS, Kim H. P–627 Optimal timing of day 6 blastocyst transfer in artificially prepared frozen-thawed embryo transfer cycles. Hum Reprod 2021. [DOI: 10.1093/humrep/deab130.626] [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: 11/14/2022] Open
Abstract
Abstract
Study question
When is the optimal timing of day 6 (D6) blastocyst transfer between the 6thday (P6)and the 7th(P7) day of progesterone administration in artificially prepared frozen-thawed embryo transfer(FET) cycle
Summary answer
When transferring D6 blastocysts in artificially prepared FET cycles, live birth rate tended to be higher in P6 group than in P7 group.
What is known already
Blastocyst transfer in FET cycles has increased due to several reasons including convenience for optimization of endometrial synchronization, improvement of laboratory techniques and preimplantation genetic testing. Meanwhile, D6 blastocyst which cryopreserved on day 6 after being developed to the full blastocyst stage, presented lower pregnancy outcomes in FET cycle than D5 blastocysts. However, there have been few studies on the optimal duration of progesterone administration when transferring D6 blastocysts.
Study design, size, duration
This was a retrospective cohort study including patients who underwent frozen-thawed blastocyst transfer in artificially prepared cycles from January 2000 to May 2020. Patients with D6 blastocyst transfer on the 6th day of progesterone administration were included in D6-P6 group, and patients with D6 blastocyst transfer on the 7th day of progesterone administration were included in D6-P7 group.
Participants/materials, setting, methods
Increasing dose of estradiol valerate was administered from the 3rd day of menstruation: 4 mg/day for the first four days, 6 mg/day for next four days, and then 8 mg/day until the confirmation of pregnancy. Progesterone was administered from the 14th day of menstruation if the endometrial thickness reached ≥7 mm. The independent t-test or Mann-Whitney test, chi-square test, and logistic regression analysis were performed.
Main results and the role of chance
A total of 50 patients were included, and 13 patients underwent FET on P6 and 37 patients underwent FET on P7. Live birth rate was comparable between the P6 group and the P7 group (18.9% vs. 15.4%, p = 0.775). Live birth rate was higher in the D6-P6 group than in the D6-P7 group after adjusting for age, AMH, endometrial thickness on the starting day of progesterone administration and good embryo rate transferred with statistical significance (OR: 6.716, p = 0.005).
Limitations, reasons for caution
Limitations of the present study is the retrospective design and the small sample size. Caution is needed in extrapolating results of this study because only intramural and vaginal progesterone supplementations were included in this study.
Wider implications of the findings: Even if the duration of blastocyst formation was delayed, frozen-thawed D6 blastocyst may need to be considered for on P6 rather than P7. The difference of live birth rate is not statistically significant. This study should be acknowledged for the underestimation of the difference because of the small sample size.
Trial registration number
Not applicable
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Affiliation(s)
- H K Kim
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - S.-Y Ku
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - S H Kim
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - C S Suh
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
| | - H Kim
- Seoul National University Hospital, Obstetrics & Gynecology, Seoul, Korea- South
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Park J, Park B, Kim TY, Jung S, Choi WJ, Ahn J, Yoon DH, Kim J, Jeon S, Lee D, Yong U, Jang J, Kim WJ, Kim HK, Jeong U, Kim HH, Kim C. Quadruple ultrasound, photoacoustic, optical coherence, and fluorescence fusion imaging with a transparent ultrasound transducer. Proc Natl Acad Sci U S A 2021; 118:e1920879118. [PMID: 33836558 PMCID: PMC7980418 DOI: 10.1073/pnas.1920879118] [Citation(s) in RCA: 70] [Impact Index Per Article: 23.3] [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] [Indexed: 12/13/2022] Open
Abstract
Ultrasound and optical imagers are used widely in a variety of biological and medical applications. In particular, multimodal implementations combining light and sound have been actively investigated to improve imaging quality. However, the integration of optical sensors with opaque ultrasound transducers suffers from low signal-to-noise ratios, high complexity, and bulky form factors, significantly limiting its applications. Here, we demonstrate a quadruple fusion imaging system using a spherically focused transparent ultrasound transducer that enables seamless integration of ultrasound imaging with photoacoustic imaging, optical coherence tomography, and fluorescence imaging. As a first application, we comprehensively monitored multiparametric responses to chemical and suture injuries in rats' eyes in vivo, such as corneal neovascularization, structural changes, cataracts, and inflammation. As a second application, we successfully performed multimodal imaging of tumors in vivo, visualizing melanomas without using labels and visualizing 4T1 mammary carcinomas using PEGylated gold nanorods. We strongly believe that the seamlessly integrated multimodal system can be used not only in ophthalmology and oncology but also in other healthcare applications with broad impact and interest.
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Affiliation(s)
- Jeongwoo Park
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Byullee Park
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Tae Yeong Kim
- Department of Materials Science and Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Sungjin Jung
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Woo June Choi
- School of Electrical and Electronics Engineering, Chung-Ang University, 06974 Seoul, Republic of Korea
| | - Joongho Ahn
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Dong Hee Yoon
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 41944 Daegu, Republic of Korea
| | - Jeongho Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 41944 Daegu, Republic of Korea
| | - Seungwan Jeon
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Donghyun Lee
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Uijung Yong
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Jinah Jang
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Mechanical Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Won Jong Kim
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Chemistry, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 41944 Daegu, Republic of Korea
| | - Unyong Jeong
- Department of Materials Science and Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea;
| | - Hyung Ham Kim
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea;
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Electrical Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
| | - Chulhong Kim
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea;
- Medical Device Innovation Center, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Creative IT Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Mechanical Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
- Department of Electrical Engineering, Pohang University of Science and Technology, 37673 Pohang, Republic of Korea
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Jang J, Kim J, Shin H, Park YG, Joo BJ, Seo H, Won JE, Kim DW, Lee CY, Kim HK, Park JU. Smart contact lens and transparent heat patch for remote monitoring and therapy of chronic ocular surface inflammation using mobiles. Sci Adv 2021; 7:eabf7194. [PMID: 33789904 PMCID: PMC8011975 DOI: 10.1126/sciadv.abf7194] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Accepted: 02/11/2021] [Indexed: 05/24/2023]
Abstract
Wearable electronic devices that can monitor physiological signals of the human body to provide biomedical information have been drawing extensive interests for sustainable personal health management. Here, we report a human pilot trial of a soft, smart contact lens and a skin-attachable therapeutic device for wireless monitoring and therapy of chronic ocular surface inflammation (OSI). As a diagnostic device, this smart contact lens enables real-time measurement of the concentration of matrix metalloproteinase-9, a biomarker for OSI, in tears using a graphene field-effect transistor. As a therapeutic device, we also fabricated a stretchable and transparent heat patch attachable on the human eyelid conformably. Both diagnostic and therapeutic devices can be incorporated using a smartphone for their wireless communications, thereby achieving instantaneous diagnosis of OSI and automated hyperthermia treatments. Furthermore, in vivo tests using live animals and human subjects confirm their good biocompatibility and reliability as a noninvasive, mobile health care solution.
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Affiliation(s)
- Jiuk Jang
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
| | - Joohee Kim
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
| | - Haein Shin
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
| | - Young-Geun Park
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- 3KIURI Institute, Yonsei University, Seoul 03722, Republic of Korea
| | - Byung Jun Joo
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
| | - Hunkyu Seo
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
| | - Jong-Eun Won
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- Department of Dentistry, Korea University Guro Hospital, Seoul 08308, Republic of Korea
- Institute of Clinical Dental Research, Korea University Guro Hospital, Seoul 08308, Republic of Korea
| | - Dai Woo Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea
- Bio-Medical Institute, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu 41944, South Korea
| | - Chang Young Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu 41944, South Korea.
- Bio-Medical Institute, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu 41944, South Korea
| | - Jang-Ung Park
- Nano Science Technology Institute, Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea.
- Center for Nanomedicine, Institute for Basic Science (IBS), Seoul 03722, Republic of Korea
- 3KIURI Institute, Yonsei University, Seoul 03722, Republic of Korea
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Shin HG, Park I, Kim K, Kim HK, Chung WK. Corneal Suturing Robot Capable of Producing Sutures With Desired Shape for Corneal Transplantation Surgery. IEEE T ROBOT 2021. [DOI: 10.1109/tro.2020.3031885] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Hong H, Kim J, Cho H, Park SM, Jeon M, Kim HK, Kim DS. Ultra-stiff compressed collagen for corneal perforation patch graft realized by in situ photochemical crosslinking. Biofabrication 2020; 12:045030. [PMID: 33000763 DOI: 10.1088/1758-5090/abb52a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Despite the potential of a collagen construct, consisting of a major extracellular matrix component of the native cornea, as a patch graft to treat the corneal perforation, there has still been difficulty in acquiring sufficient mechanical properties for clinical availability. This study developed a novel in situ photochemical crosslinking (IPC)-assisted collagen compression process, namely, the IPC-C2 process, to significantly enhance the mechanical properties of the collagen construct for the development of a collagenous patch graft. For the first time, we found that compressed collagen construct was rapidly rehydrated in an aqueous solution, which inhibited effective riboflavin-mediated photochemical crosslinking for mechanical improvement. The IPC-C2 process was designed to concurrently induce the physical compaction and photochemical crosslinking of a compressed collagen construct, thereby avoiding the loosening of collagen fibrillar structure during rehydration and ultimately improving crosslinking efficiency. Hence, the suggested IPC-C2 process could fabricate a collagen construct with a high collagen density (∼120-280 mg ml-1) and ∼103-fold increased mechanical properties (an elastic modulus of up to ∼29 MPa and ultimate tensile strength of ∼8 MPa) compared with collagen gel. This construct can then be used as a clinically applicable collagenous patch graft. With sufficient mechanical strength for surgical suture and the controllable thickness for patient specificity, the potential of the fabricated IPC-compressed collagen construct for clinical applications was demonstrated by using an in vivo rabbit corneal perforation model. It effectively protected aqueous humor leakage and maintained the integrity of the eye globe without an additional complication.
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Affiliation(s)
- Hyeonjun Hong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Nam-gu, Pohang, Gyeongbuk, 37673, Republic of Korea
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Yi S, Huh MI, Hong H, Yoon D, Park HS, Kim DS, Kim HK. Development of Contact Lens-Shaped Crosslinked Amniotic Membranes for Sutureless Fixation in the Treatment of Ocular Surface Diseases. Transl Vis Sci Technol 2020; 9:12. [PMID: 32821509 PMCID: PMC7408872 DOI: 10.1167/tvst.9.6.12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 10/01/2019] [Accepted: 03/23/2020] [Indexed: 11/24/2022] Open
Abstract
Purpose To develop a new method of manufacturing contact lens-shaped crosslinked amniotic membranes (AMs) using glutaraldehyde (GA) and dialdehyde starch (DAS) as crosslinking agents. Methods Amniotic membranes were placed on a curved plastic mold and crosslinked with either 4.5% DAS or 1% GA, after which their physical properties and biological safety were evaluated. Results The tensile strength of the GA- and DAS-crosslinked samples was much increased compared with that of normal AMs. Neither crosslinking process affected AM transparency. Although the GA-crosslinked AM showed better enzymatic resistance, its physiological structure was severely damaged after the crosslinking process. On the other hand, compared with the GA-crosslinked AM, the DAS-crosslinked AM showed higher growth factor concentrations and better biocompatibility, similar to normal AMs. In addition, the DAS-crosslinked AM was effective in the recovery of corneal epithelial wounds and was well maintained over 3 days without decentration or degradation on the ocular surface in human subjects. Conclusions Contact lens-shaped AMs were successfully prepared with crosslinking agents. Crosslinking with DAS did not affect the structural properties or biological activity of the AMs, and the improved mechanical properties helped the AM to maintain its curved shape. This crosslinking method allowed us to transplant AMs into patients’ eyes without sutures. Translational Relevance Sutureless fixation of contact lens-shaped AMs would be very convenient and safe for the treatment of corneal surface disease.
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Affiliation(s)
- Soojin Yi
- Bio-Medical Institute, Kyungpook National University Hospital, Daegu, Republic of Korea.,Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Man-Il Huh
- Bio-Medical Institute, Kyungpook National University Hospital, Daegu, Republic of Korea.,Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hyeonjun Hong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, Republic of Korea
| | - Donghee Yoon
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Han Sang Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, Republic of Korea
| | - Hong Kyun Kim
- Bio-Medical Institute, Kyungpook National University Hospital, Daegu, Republic of Korea.,Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
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Romano MR, Parolini B, Allegrini D, Michalewska Z, Adelman R, Bonovas S, Bopp S, Tekin K, Fiser I, Boon CJF, Dijk ECH, Donvito G, Güngel H, Özdoğan Erkul S, Ünsal E, Osmanbaşoğlu Ö, Dinçer N, Erçalık NY, Yenerel NM, Amar J, Ennemoser A, Besozzi G, Sallam AAB, Ellabban AA, Chang W, Eandi CM, Demir M, Lee J, Pak K, Arrevola L, Sloka A, Morawski K, Kulig ‐ Stochmal A, Romanowska ‐ Dixon B, Striebe N, Feltgen N, Hoerauf H, Inan UU, Tanev I, Dyrda A, Schüler A, Lucke K, Brix A, Pape S, Kusserow‐Napp C, Loo PA, Kanra AY, Ardagil Akçakaya A, Arı Yaylalı S, Bae SH, Kim HK, Kim SJ, Han JR, Nam WH, Odrobina D, Lavaque E, Bertelli E, Coser S, Ziemssen F, Forlini M, Benatti C, Cavallini GM, Stefanickova J, Berrod J, Saksonov S, Lytvinchuk L, Moussa M, Stefaniotou M, Christodoulou E, Zayed MA, Oz O, Tassinari P, Koch P, Declercq C, Johnston R, Rusnak S, Penas S, Ozdek S, Ucgul Y, Cisiecki S, Dziegielewski K, Klimczak D, Michalewska Z, Michalewski J, Nawrocka Z, Nawrocki J, Ornafel K, Pikulski Z, Maciej M, Acar N, Elshafei MM, Hamon F, Soyeur R, Badat I, Brousseau B, Hermouet E, Peiretti E, Lee J, Ferreira N, Yoon H, Alkhars WI, Dudani A, Minu R, Telang O, MorePatil VG, Furtado MJ, Jo Y, Piccolino FC, Finzi A. An international collaborative evaluation of central serous chorioretinopathy: different therapeutic approaches and review of literature. The European Vitreoretinal Society central serous chorioretinopathy study. Acta Ophthalmol 2020; 98:e549-e558. [PMID: 31808315 DOI: 10.1111/aos.14319] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 01/09/2019] [Accepted: 11/02/2019] [Indexed: 01/14/2023]
Abstract
PURPOSE To study and compare the efficacy of different therapeutic options for the treatment of central serous chorioretinopathy (CSCR). METHODS This is a nonrandomized, international multicentre study on 1719 patients (1861 eyes) diagnosed with CSCR, from 63 centres (24 countries). Reported data included different methods of treatment and both results of diagnostic examinations [fluorescein angiography and/or optical coherent tomography (OCT)] and best-corrected visual acuity (BCVA) before and after therapy. The duration of observation had a mean of 11 months but was extended in a minority of cases up to 7 years. The aim of this study is to evaluate the efficacy of the different therapeutic options of CSCR in terms of both visual (BCVA) and anatomic (OCT) improvement. RESULTS One thousand seven hundred nineteen patients (1861 eyes) diagnosed with CSCR were included. Treatments performed were nonsteroidal anti-inflammatory eye drops, laser photocoagulation, micropulse diode laser photocoagulation, photodynamic therapy (PDT; Standard PDT, Reduced-dose PDT, Reduced-fluence PDT), intravitreal (IVT) antivascular endothelial growth factor injection (VEGF), observation and other treatments. The list of the OTHERS included both combinations of the main proposed treatments or a variety of other treatments such as eplerenone, spironolactone, acetazolamide, beta-blockers, anti-anxiety drugs, aspirin, folic acid, methotrexate, statins, vitis vinifera extract medication and pars plana vitrectomy. The majority of the patients were men with a prevalence of 77%. The odds ratio (OR) showed a partial or complete resolution of fluid on OCT with any treatment as compared with observation. In univariate analysis, the anatomical result (improvement in subretinal fluid using OCT at 1 month) was favoured by age <60 years (p < 0.005), no previous observation (p < 0.0002), duration less than 3 months (p < 0.0001), absence of CSCR in the fellow eye (p = 0.04), leakage outside of the arcade (p = 0.05) and fluid height >500 μm (p = 0.03). The OR for obtaining partial or complete resolution showed that anti-VEGF and eyedrops were not statistically significant; whereas PDT (8.5), thermal laser (11.3) and micropulse laser (8.9) lead to better anatomical results with less variability. In univariate analysis, the functional result at 1 month was favoured by first episode (p = 0.04), height of subretinal fluid >500 μm (p < 0.0001) and short duration of observation (p = 0.02). Finally, there was no statistically significant difference among the treatments at 12 months. CONCLUSION Spontaneous resolution has been described in a high percentage of patients. Laser (micropulse and thermal) and PDT seem to lead to significant early anatomical improvement; however, there is little change beyond the first month of treatment. The real visual benefit needs further clarification.
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Affiliation(s)
- Mario R Romano
- Department of Ophthalmology, Gavazzeni - Castelli Hospital, Humanitas University, Rozzano, Italy
| | - Barbara Parolini
- Department of Ophthalmology, Istituto Clinico S. Anna, Brescia, Italy
| | - Davide Allegrini
- Department of Ophthalmology, Gavazzeni - Castelli Hospital, Humanitas University, Rozzano, Italy
| | | | - Ron Adelman
- Department of Ophthalmology, Yale University, New Haven, Connecticut, USA
| | - Stefanos Bonovas
- Department of Biomedical Sciences, Humanitas University, Pieve Emanuele, Milan, Italy
| | - Silvia Bopp
- Department of Ophthalmology & Visual Science, Yale University School of Medicine, New Haven, Connecticut, USA
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Park I, Kim HK, Chung WK, Kim K. Deep Learning Based Real-Time OCT Image Segmentation and Correction for Robotic Needle Insertion Systems. IEEE Robot Autom Lett 2020. [DOI: 10.1109/lra.2020.3001474] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Park CH, Lee HK, Kim MK, Kim EC, Kim JY, Kim TI, Kim HK, Song JS, Yoon KC, Lee DH, Chung TY, Choi CY, Kim HS. Retraction Note: Comparison of 0.05% cyclosporine and 3% diquafosol solution for dry eye patients: a randomized, blinded, multicenter clinical trial. BMC Ophthalmol 2020; 20:251. [PMID: 32576162 PMCID: PMC7310420 DOI: 10.1186/s12886-020-01524-8] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Chang Hyun Park
- Department of Ophthalmology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul, 07345, South Korea
| | - Hyung Keun Lee
- The Institute of Vision Research, Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, South Korea
| | - Eun Chul Kim
- Department of Ophthalmology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, South Korea
| | - Jae Yong Kim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Tae-Im Kim
- The Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, South Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu, South Korea
| | - Jong Suk Song
- Department of Ophthalmology, Korea University College of Medicine, Seoul, South Korea
| | - Kyung Chul Yoon
- Department of Ophthalmology, Chonnam National University Medical School, Gwangju, South Korea
| | - Do Hyung Lee
- Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, South Korea
| | - Tae-Young Chung
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Chul Young Choi
- Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - Hyun Seung Kim
- Department of Ophthalmology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul, 07345, South Korea.
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Do JR, Park SJ, Mukai R, Kim HK, Shin JP, Park DH. A 1-Year Prospective Comparative Study of Sutureless Flanged Intraocular Lens Fixation and Conventional Sutured Scleral Fixation in Intraocular Lens Dislocation. Ophthalmologica 2020; 244:68-75. [PMID: 32252056 DOI: 10.1159/000507713] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [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: 01/26/2020] [Accepted: 04/01/2020] [Indexed: 11/19/2022]
Abstract
PURPOSE To compare surgical outcomes of sutureless flanged intraocular lens (IOL) fixation and conventional sutured scleral fixation (SF) for secondary IOL implantation in patients with IOL dislocation. METHODS This is a prospective, comparative cohort study on 103 consecutive patients (103 eyes) with IOL dislocation who underwent vitrectomy with IOL removal and sutured SF (53 eyes) or flanged IOL fixation (50 eyes). Operating time, best-corrected visual acuity (BCVA), refractive difference, IOL tilt and decentration using swept-source anterior segment OCT, and postoperative complications were measured for 12 months. RESULTS Operating time was significantly shorter for the flanged IOL fixation than for sutured SF (19.4 ± 4.6 vs. 48.9 ± 5.2 min, p < 0.001). BCVA in both groups improved at 1, 3, 6, and 12 months postoperatively (p < 0.05). BCVA in the 2 groups was similar during the 12 months of observation. The refractive difference, IOL tilt, IOL decentration, and incidence of postoperative complications were also not different in the 2 groups. CONCLUSION Sutured SF and flanged IOL fixation had similar visual outcomes and IOL stability in patients with IOL dislocation. However, the operating time for flanged IOL fixation was less than half that of the sutured SF. This technique is an efficient alternative for treating IOL dislocation.
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Affiliation(s)
- Jae Rock Do
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea.,Department of Ophthalmology, School of Medicine, Sungkyunkwan University, Samsung Changwon Hospital, Changwon, Republic of Korea
| | - Su Jin Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Ryo Mukai
- Department of Ophthalmology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Jae Pil Shin
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea
| | - Dong Ho Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, Republic of Korea,
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Moon I, Lee SP, Kim MK, Park JB, Kim HK, Kim YJ, Sohn DW. P1274 Early surgery versus watchful waiting in patients with moderate aortic stenosis and left ventricular systolic dysfunction. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.724] [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] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Aortic stenosis (AS) induces significant pressure overload to the left ventricle (LV) and its burden may increase if there is concomitant LV systolic dysfunction. Severe AS with LV systolic dysfunction is a class I indication for aortic valve replacement (AVR) irrespective of symptoms, however, this recommendation is not well established in those with moderate AS and LV systolic dysfunction. In this study, we sought to investigate the clinical impact of surgical AVR among patients with moderate AS and LV systolic dysfunction.
Methods
From 2001 to 2017, we retrospectively but consecutively identified patients with moderate AS and LV systolic dysfunction from a single tertiary hospital. Moderate AS was defined as aortic valve area between 1.0 and 1.5cm2 and LV systolic dysfunction as LV ejection fraction less than 50%. The primary outcome was all-cause death and we additionally analyzed cardiac death as a secondary endpoint. The outcomes were compared between those who underwent early surgical AVR at the stage of moderate AS versus those who were followed without AVR at the outpatient clinic.
Results
Among a total of 257 patients with moderate AS and concomitant LV systolic dysfunction (70.0 ± 11.3 years, 63.4% of male), 34 patients received early AVR. Patients in the AVR group was younger than the observation group (64.2 ± 8.1 vs. 70.9 ± 11.5, respectively), and had a lower prevalence of hypertension and chronic kidney disease. During a mean of 3-year follow up, 112 patients (47.5%) died and the overall death rate was 15.367 per 100 person-year (PY). The AVR group showed a significantly lower rate of all-cause death than the observation group (5.241PY vs. 18.160PY, p-value = 0.002). After multivariable Cox proportional hazard regression adjusting for age, sex, comorbidities and laboratory data, early AVR at the stage of moderate AS significantly reduced the risk of all-cause death (hazard ratio [HR] 0.340, 95% confidence interval [CI] 0.117 - 0.985, p-value = 0.047). However, there was no risk reduction of cardiac death (HR 0.578 95% CI 0.150 - 2.231, p-value = 0.426).
Conclusions
In patients with moderate AS and LV systolic dysfunction, AVR reduces the risk of all-cause death. A prospective design study is warranted to confirm our findings in the near future.
Abstract P1274 Figure. Kaplan-Meier curves for deaths
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Affiliation(s)
- I Moon
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - M K Kim
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
| | - D W Sohn
- Seoul National University Hospital, Department of Internal Medicine, Seoul, Korea (Republic of)
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Kim HM, Kim HK, Lee JH, Park EA, Park JB, Lee SP, Kim YJ, Sohn DW, Lee YB, Kim YJ, Yoon JH. P1603 Changes of cardiac function in cirrhotic patients after liver transplantation. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.1021] [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] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
This study was supported by the grant of CJ healthcare 2016 research fund.
Background
Liver cirrhosis (LC) has been known to affect cardiovascular performance. Limited study have evaluated the alteration of myocardial function in patients with LC after liver transplantation (LT).
Purpose
The aim of study was to evaluate changes of cardiac function in patients with cirrhosis following LT using conventional and speckle-tracking echocardiography and late gadolinium enhancement (LGE) of cardiac magnetic resonance (MR).
Methods
Thirty-five patients with cirrhosis (mean age, 57.1 ± 9.0; male, 75%) who were listed for LT were prospectively enrolled. Patients underwent conventional, speckle-tracking echocardiography, and cardiac MR imaging with LGE. Echocardiography and cardiac MR were performed at pre and 1 year after LT. Cirrhotic patients were compared with normal control (n = 20, mean age, 65.0 ± 14.8; men, 11(55%)) and echocardiographic and cardiac MR data were compared pre and post LT.
Results
Conventional and speckle-tracking echocardiography and Cardiac MR imaging demonstrated hyperdynamic left ventricular (LV) function in patients with cirrhosis (LV ejection fraction (EF) with cardiac MR 67.8 ± 7.0% in LC vs. 63.4 ± 6.4% in control, P = 0.028; global longitudinal strain (GLS) -24.3 ± 2.6% in LC vs. -18.6 ± 2.2% in control, P < 0.001). There were no LGE in patients with cirrhosis and no significant differences in LV size, LV wall thickness, LV mass index, and diastolic function between cirrhotic patients and control group (all P > 0.1). Corrected QT interval (QTc) in electrocardiogram was prolonged in LC patients (P < 0.001). One-year after LT, LV end-diastolic diameter and LV end-diastolic volume significantly decreased (P = 0.016 and 0.022, respectively). Although LVEF showed no significant changes 1 year post-LT (P = 0.362), LV-GLS (from -24.7 ± 1.8% to -20.8 ± 3.4%, P < 0.001) significantly decreased. QTc interval also decreased 1 year after LT (from 470.4 ± 29.6msec to 428.2 ± 31.6msec, P = 0.001).
Conclusions
The present study demonstrated that cirrhotic patients showed hyperdynamic circulation and prolonged QTc interval compared with normal controls. After 1 year LT, LV size reduced and augmented LV function was normalized. Given that no LGE in cardiac MR and normalized GLS and QTc after LT, cardiac dysfunction in LC patients could be reversed by LT.
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Affiliation(s)
- H M Kim
- Mediplex Sejong Hospital, Incheon, Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - J H Lee
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
| | - E A Park
- Seoul National University Hospital, Radiology, Seoul, Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - D W Sohn
- Seoul National University Hospital, Cardiology, Seoul, Korea (Republic of)
| | - Y B Lee
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
| | - J H Yoon
- Seoul National University Hospital, Gastroenterology, Seoul, Korea (Republic of)
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Hwang I, Lee JM, Park JB, Yoon YE, Lee SP, Kim HK, Kim YJ, Cho GY, Park SJ, Kim KH, Hong GR. P1368 Effect of angiotensin receptor blocker in patients with moderate or severe aortic stenosis: a randomized controlled trial. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.803] [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] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
This study was supported by grants from Boryung Pharmacy Research Fund.
Background/Introduction: Pathophysiology of aortic stenosis (AS) and several previous studies suggested the potential role of angiotensin receptor blocker (ARB) in patients with AS.
Purpose
We aimed to investigate the effects of Fimasartan, an ARB, on exercise capacity and progression of AS in patients with moderate to severe AS.
Methods
We conducted a prospective, randomized, double-blind, placebo-controlled trial in 32 normotensive or controlled-hypertensive patients with moderate or severe AS. Study participants were randomized to Fimasartan 30 mg to 60 mg daily (n = 14) or placebo (n = 18) for 1 year, and underwent cardiopulmonary exercise test, 6-minute walk test, and echocardiography at 0, 6, and 12 months, with follow-up data available in 29 subjects.
Results
Significant reductions in blood pressures were observed in the Fimasartan group but not in the placebo group. Two of the 14 patients in the Fimasartan group withdrew the study due to mild symptoms probably related with the decreased blood pressure, and one patient decline the study protocol. After the 12-month treatment, the peak oxygen consumption (VO2; the primary outcome) in the Fimasartan group was significantly decreased (from 28.3 ± 5.9 to 25.4 ± 3.8 mL/min/kg, P = 0.021) but not in the placebo group (P for interaction = 0.046) (Figure 1A). The severity of AS showed a gradual progression in both groups, without inter-group differences (mean transaortic pressure; Fimasartan group, +4.0 ± 3.8 mmHg/year; placebo group, +5.3 ± 6.2 mmHg/year; P for interaction = 0.429) (Figure 1B). Parameters of left ventricular systolic and diastolic function did not change in both groups.
Conclusions
The use of ARB impaired exercise capacity in patients with moderate or severe AS, and did not prevent the progression of AS. However, due to the small number of participants, further studies are required to confirm these findings.
Abstract P1368 Figure.
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Affiliation(s)
- I Hwang
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - J M Lee
- Samsung Medical Center, Cardiovascular Center, Seoul, Korea (Republic of)
| | - J B Park
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - Y E Yoon
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - S P Lee
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - H K Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - Y J Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
| | - G Y Cho
- Seoul National University Bundang Hospital, Seongnam, Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Cardiovascular Center, Seoul, Korea (Republic of)
| | - K H Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - G R Hong
- Yonsei University College of Medicine, Seoul, Korea (Republic of)
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Park CH, Kim MK, Kim EC, Kim JY, Kim TI, Kim HK, Song JS, Yoon KC, Lee DH, Lee HK, Chung TY, Choi CY, Kim HS. Efficacy of Topical Cyclosporine Nanoemulsion 0.05% Compared with Topical Cyclosporine Emulsion 0.05% and Diquafosol 3% in Dry Eye. Korean J Ophthalmol 2019; 33:343-352. [PMID: 31389210 PMCID: PMC6685820 DOI: 10.3341/kjo.2018.0116] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 10/25/2018] [Revised: 12/05/2018] [Accepted: 06/02/2019] [Indexed: 11/23/2022] Open
Abstract
PURPOSE To evaluate the efficacy and safety of cyclosporine nanoemulsion 0.05% compared to cyclosporine emulsion 0.05% and diquafosol sodium 3%. METHODS This was a multicenter, randomized, evaluator-masked, active control, parallel, phase IV study. A total of 227 patients were randomly allocated to instill cyclosporine nanoemulsion 0.05% (CN) twice daily, cyclosporine emulsion 0.05% (CE) twice daily, or diquafosol sodium 3% (DQ) six times daily. Non-inferiority of CN was analyzed by primary endpoint (cornea and conjunctival staining scores at week 12). The secondary endpoints were scores of corneal staining, conjunctival staining, tear break-up time, Schirmer test, and Ocular Surface Disease Index at weeks 4 and 12. RESULTS Primary endpoints showed statistically significant improvements in all groups. Primary endpoints were -6.60 for the CN group, -5.28 for the CE group, and -6.63 for the DQ group (National Eye Institute scale from 0 to 33), verifying the non-inferiority of CN compared to CE (95% confidence interval, -0.15 to 2.80, Δ>-2.88). In intergroup comparison between CN and CE groups, the CN group had significantly more decreased conjunctival staining score at week 12. Intergroup comparison between CN and DQ groups showed consistent statistically significant improvements in TBUT and Schirmer test in the CN group. In the DQ group, TBUT showed late statistically significant improvement at week 12 and Schirmer test showed relatively short-term statistically significant improvement at week 4. CONCLUSIONS Cyclosporine nanoemulsion 0.05% was equivalently efficient compared to cyclosporine emulsion 0.05% and diquafosol sodium 3%. In addition, CN showed significant improvements in several parameters for treatment of dry eyes.
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Affiliation(s)
- Chang Hyun Park
- Department of Ophthalmology, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Eun Chul Kim
- Department of Ophthalmology, Bucheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Bucheon, Korea
| | - Jae Yong Kim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Tae Im Kim
- Department of Ophthalmology, Institute of Vision Research, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu, Korea
| | - Jong Suk Song
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
| | - Kyung Chul Yoon
- Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Korea
| | - Do Hyung Lee
- Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Hyung Keun Lee
- Department of Ophthalmology, Institute of Vision Research, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Tae Young Chung
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Chul Young Choi
- Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyun Seung Kim
- Department of Ophthalmology, Yeouido St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
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Chung JK, Lee HK, Kim MK, Kim HK, Kim SW, Kim EC, Kim HS. Cataract Surgery Practices in the Republic of Korea: A Survey of the Korean Society of Cataract and Refractive Surgery 2018. Korean J Ophthalmol 2019; 33:451-457. [PMID: 31612656 PMCID: PMC6791949 DOI: 10.3341/kjo.2019.0064] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 06/13/2019] [Revised: 07/09/2019] [Accepted: 07/16/2019] [Indexed: 11/23/2022] Open
Abstract
Purpose To describe current cataract surgery practice patterns and changing trends among Korean ophthalmologists. Methods A survey of members of the Korean Society of Cataract and Refractive Surgery was performed in July 2018. One hundred and two (12.7%) of 801 questionnaires were returned for analysis. The data were analyzed using descriptive statistics and compared with previous surveys. Results Most of the respondents (75%) had been in practice for 6 or more years and performed an average of 31 cataract surgeries per month. The preferred method for cataract surgery was phacoemulsification (95%); 5% used a femtosecond laser. The use of topical anesthesia markedly increased from 69% (2012) to 80% (2018). The use of optical biometry exceeded that of ultrasound A-scan biometry. A multifocal intraocular lens was used by 76% of the respondents compared with 44% of the respondents in 2012. Topical nonsteroidal anti-inflammatory drugs were used by 70% of the respondents postoperatively. Most (59%) of these anti-inflammatory drugs were prescribed for 4 weeks. Conclusions This survey provided a comprehensive update of the present cataract surgery practices in the Republic of Korea. The results emphasized the increasing use of premium intraocular lenses, optical biometry, and topical anesthesia.
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Affiliation(s)
- Jin Kwon Chung
- Department of Ophthalmology, Soonchunhyang University College of Medicine, Seoul, Korea.
| | - Hyung Keun Lee
- Department of Ophthalmology, Yeonsei University College of Medicine, Seoul, Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, Kyungpook National University College of Medicine, Daegu, Korea
| | - Sun Woong Kim
- Department of Ophthalmology, Yeonsei University Wonju College of Medicine, Wonju, Korea
| | - Eun Chul Kim
- Department of Ophthalmology, Bucheon St. Mary's Hospital, The Catholic University of Korea College of Medicine, Bucheon, Korea
| | - Hyun Seung Kim
- Department of Ophthalmology, Seoul St. Mary's Hospital, The Catholic University of Korea College of Medicine, Seoul, Korea.
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Bodenstein DF, Kim HK, Brown NC, Navaid B, Young LT, Andreazza AC. Mitochondrial DNA content and oxidation in bipolar disorder and its role across brain regions. NPJ Schizophr 2019; 5:21. [PMID: 31797868 PMCID: PMC6892804 DOI: 10.1038/s41537-019-0089-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 10/18/2019] [Indexed: 12/18/2022]
Abstract
The underlying pathology of bipolar disorder remains unknown, though evidence is accumulating to support a role of mitochondrial dysfunction. In this study, we aim to investigate electron transport chain complex I subunit NDUFS7 protein expression; mtDNA content; common deletion; and oxidation in the Broadmann area 24 (BA24), cerebellum, hippocampus, and prefrontal cortex from patients with bipolar disorder, schizophrenia, and non-psychiatric controls. Here, we demonstrate no changes in NDUFS7 in BA24, cerebellum or hippocampus, increases in mtDNA content in hippocampus of patients with bipolar disorder, and decreases in mtDNA oxidation in patients with bipolar disorder and schizophrenia, respectively. Paired analysis between BA24 and cerebellum reveal increases within NDUFS7 levels and mtDNA content in cerebellum of patients with bipolar disorder or schizophrenia. We found a positive correlation between NDUFS7 and mtDNA content (ND4 and ND5) when combining brain regions. Our study supports the involvement of mitochondrial dysfunction in bipolar disorder and schizophrenia.
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Affiliation(s)
- D F Bodenstein
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - H K Kim
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - N C Brown
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - B Navaid
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - L T Young
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - A C Andreazza
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada. .,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
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Park BU, Park SM, Lee KP, Lee SJ, Nam YE, Park HS, Eom S, Lim JO, Kim DS, Kim HK. Collagen immobilization on ultra-thin nanofiber membrane to promote in vitro endothelial monolayer formation. J Tissue Eng 2019; 10:2041731419887833. [PMID: 31762986 PMCID: PMC6856979 DOI: 10.1177/2041731419887833] [Citation(s) in RCA: 11] [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: 06/08/2019] [Accepted: 10/21/2019] [Indexed: 12/31/2022] Open
Abstract
The endothelialization on the poly (ε-caprolactone) nanofiber has been limited due to its low hydrophilicity. The aim of this study was to immobilize collagen on an ultra-thin poly (ε-caprolactone) nanofiber membrane without altering the nanofiber structure and maintaining the endothelial cell homeostasis on it. We immobilized collagen on the poly (ε-caprolactone) nanofiber using hydrolysis by NaOH treatment and 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide/sulfo-N-hydroxysulfosuccinimide reaction as a cost-effective and stable approach. NaOH was first applied to render the poly (ε-caprolactone) nanofiber hydrophilic. Subsequently, collagen was immobilized on the surface of the poly (ε-caprolactone) nanofibers using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide/sulfo-N-hydroxysulfosuccinimide. Scanning electron microscopy, Fourier transform infrared spectroscopy, transmission electron microscopy, and fluorescence microscopy were used to verify stable collagen immobilization on the surface of the poly (ε-caprolactone) nanofibers and the maintenance of the original structure of poly (ε-caprolactone) nanofibers. Furthermore, human endothelial cells were cultured on the collagen-immobilized poly (ε-caprolactone) nanofiber membrane and expressed tight junction proteins with the increase in transendothelial electrical resistance, which demonstrated the maintenance of the endothelial cell homeostasis on the collagen-immobilized-poly (ε-caprolactone) nanofiber membrane. Thus, we expected that this process would be promising for maintaining cell homeostasis on the ultra-thin poly (ε-caprolactone) nanofiber scaffolds.
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Affiliation(s)
- Byeong-Ung Park
- Bio-Medical Institute, Kyungpook National University Hospital (KNUH), Daegu, South Korea.,Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Sang Min Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea.,School of Mechanical Engineering, Pusan National University, Busan, South Korea
| | - Kyoung-Pil Lee
- Bio-Medical Institute, Kyungpook National University Hospital (KNUH), Daegu, South Korea.,Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Seong Jin Lee
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Yu Eun Nam
- Bio-Medical Institute, Kyungpook National University Hospital (KNUH), Daegu, South Korea.,Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Han Sang Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea
| | - Seongsu Eom
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Jeong Ok Lim
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, South Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea
| | - Hong Kyun Kim
- Bio-Medical Institute, Kyungpook National University Hospital (KNUH), Daegu, South Korea.,Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, South Korea
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Hong H, Kim H, Han SJ, Jang J, Kim HK, Cho DW, Kim DS. Compressed collagen intermixed with cornea-derived decellularized extracellular matrix providing mechanical and biochemical niches for corneal stroma analogue. Materials Science and Engineering: C 2019; 103:109837. [DOI: 10.1016/j.msec.2019.109837] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 03/18/2019] [Accepted: 05/29/2019] [Indexed: 01/07/2023]
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Bach H, Jenkins V, Aledhaim A, Moayedi S, Schenkel SM, Kim HK. Prevalence of fentanyl exposure and knowledge regarding the risk of its use among emergency department patients with active opioid use history at an urban medical center in Baltimore, Maryland. Clin Toxicol (Phila) 2019; 58:460-465. [PMID: 31475588 DOI: 10.1080/15563650.2019.1657583] [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] [Indexed: 02/01/2023]
Abstract
Background: Overdose deaths from fentanyl and its analogs have increased significantly since 2013. There are limited data regarding the prevalence of fentanyl exposure among emergency department (ED) patients with active opioid use.Methods: We conducted a cross-sectional study at an urban hospital from May 20 to July 30, 2018. A convenience sample of adult ED patients with active opioid use, defined as opioid use within seven days prior to ED visit, were enrolled. Rapid Response® Single Drug Test Strip (BTNX Inc., Markham, Canada) was used to detect fentanyl in urine samples. Information on demographic, substance use history, and knowledge of fentanyl was obtained using a brief survey tool. Our primary outcome was the prevalence of fentanyl exposure; secondary outcomes included patients' knowledge regarding potency, risk of overdose death from fentanyl and intentional purchase of fentanyl.Results: During our study period, 451 patients reported active substance use. Of these, 208 reported active opioid use and 165 consented for the study. The median age was 49 years [interquartile range: 38, 57] and 77.0% (n = 127) were male; 42 participants (25.5%) presented to ED after an acute overdose event. Heroin was the preferred opioid of use in 90.8% of the participants, primarily via intranasal route (64.6%). Polysubstance use was reported in 98.8%, most commonly with cocaine (57.6%; n = 95). Fentanyl was detected in 104 out of 129 urine samples tested (80.6%). 84.2% (n = 139) identified fentanyl as highly potent and 85.5% (n = 141) recognized highest risk of death in fentanyl overdose. A larger proportion of non-overdose participants intentionally purchased fentanyl (34.1%; n = 42) compared to the overdose group (16.7%, n = 7; p = .04).Conclusions: The majority of ED patient with active opiate use were exposed to fentanyl while one in three participants intentionally purchased fentanyl despite their awareness of its potency and the high-risk of death from overdose.
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Affiliation(s)
- H Bach
- Department of Emergency Medicine, University of Maryland Medical Center, Baltimore, MD, USA
| | - V Jenkins
- University of Maryland School of Medicine, Baltimore, MD, USA
| | - A Aledhaim
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - S Moayedi
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - S M Schenkel
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
| | - H K Kim
- Department of Emergency Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
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Park SM, Lee KP, Huh MI, Eom S, Park BU, Kim KH, Park DH, Kim DS, Kim HK. Development of an in vitro 3D choroidal neovascularization model using chemically induced hypoxia through an ultra-thin, free-standing nanofiber membrane. Mater Sci Eng C Mater Biol Appl 2019; 104:109964. [PMID: 31499990 DOI: 10.1016/j.msec.2019.109964] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 07/05/2019] [Accepted: 07/08/2019] [Indexed: 12/18/2022]
Abstract
Choroidal neovascularization (CNV) is the pathological growth of new blood vessels in the sub-retinal pigment epithelial (RPE) space from the choroid through a break in the Bruch's membrane (BM). Despite its importance in studying biological processes and drug discovery, the development of an in vitro CNV model that achieves the physiological structures of native RPE-BM-choroidal capillaries (CC) is still challenging. Here, we develop a novel 3D RPE-BM-CC complex biomimetic system on an ultra-thin, free-standing nanofiber membrane. The thickness of the pristine nanofiber membrane is 2.17 ± 0.81 μm, and the Matrigel-coated nanofiber membrane attains a permeability coefficient of 2.95 ± 0.25 × 10-6 cm/s by 40 kDa FITC-dextran, which is similar to the physiological value of the native BM. On the in vitro 3D RPE-BM-CC complex system, we demonstrate endothelial cell invasion across the 3D RPE-BM-CC complex and the mechanism of the invasion by imposing a hypoxic condition, which is thought to be the major pathological cause of CNV. Furthermore, alleviation of the invasion is achieved by treating with chrysin and anti-VEGF antibody. Thus, the in vitro 3D RPE-BM-CC complex biomimetic system can recapitulate essential features of the pathophysiological environment and be employed for the screening of drug candidates to reduce the number of costly and time-consuming in vivo tests or clinical trials.
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Affiliation(s)
- Sang Min Park
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Kyoung-Pil Lee
- Bio-Medical Institute, Kyungpook National University Hospital, 807 Hoguk-ro, Buk-gu, Daegu 41404, South Korea; Department of Ophthalmology, School of Medicine, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, South Korea
| | - Man-Il Huh
- Bio-Medical Institute, Kyungpook National University Hospital, 807 Hoguk-ro, Buk-gu, Daegu 41404, South Korea; Department of Ophthalmology, School of Medicine, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, South Korea
| | - Seongsu Eom
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Byeong-Ung Park
- Bio-Medical Institute, Kyungpook National University Hospital, 807 Hoguk-ro, Buk-gu, Daegu 41404, South Korea; Department of Ophthalmology, School of Medicine, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, South Korea
| | - Ki Hean Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea
| | - Dong Ho Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, South Korea
| | - Dong Sung Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Nam-gu, Pohang, Gyeongbuk 37673, South Korea.
| | - Hong Kyun Kim
- Bio-Medical Institute, Kyungpook National University Hospital, 807 Hoguk-ro, Buk-gu, Daegu 41404, South Korea; Department of Ophthalmology, School of Medicine, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 41566, South Korea.
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Park CH, Lee HK, Kim MK, Kim EC, Kim JY, Kim TI, Kim HK, Song JS, Yoon KC, Lee DH, Chung TY, Choi CY, Kim HS. Comparison of 0.05% cyclosporine and 3% diquafosol solution for dry eye patients: a randomized, blinded, multicenter clinical trial. BMC Ophthalmol 2019; 19:131. [PMID: 31208393 PMCID: PMC6580465 DOI: 10.1186/s12886-019-1136-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [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: 01/21/2019] [Accepted: 06/04/2019] [Indexed: 12/22/2022] Open
Abstract
Background This study is aim to compare the clinical effectiveness between the two most prominent dry eye disease (DED)-specific eye drops, 0.05% cyclosporine (CN) and 3% diquafosol (DQ). Methods This is a multi-centered, randomized, masked, prospective clinical study. A total of 153 DED patients were randomly allocated to use CN twice per day or DQ six times daily. Cornea and conjunctival staining scores (NEI scale), tear break-up time (TBUT), Schirmer test scores, and ocular surface disease index (OSDI) score were measured at baseline, 4 and 12 weeks after treatment. Results At 12 weeks after treatment, NEI scaled scores were significantly reduced from the baseline by − 6.60 for CN and − 6.63 for DQ group (all P < 0.0001, P = 0.9739 between groups). TBUT and Schirmer values for CN were significantly improved from the baseline at 4 and 12 weeks (P = 0.0034, P < 0.0001 for TBUT, P = 0.0418, P = 0.0031 for Schirmer test). However, for DQ, TBUT showed significant improvement at 12 weeks only (P = 0.0281). Mean OSDI score differences from the baseline to 12 weeks were improved by − 13.03 ± 19.63 for CN and − 16.11 ± 20.87 for DQ, respectively (all P < 0.0001, P = 0.854 between groups). Regarding drug compliance, the mean instillation frequency of CN was less than that of DQ (P < 0.001). There were no statistically significant intergroup differences in safety evaluation. Conclusions The level of improvement regarding NEI, TBUT, and OSDI scores were not significantly different between the two treatment groups. However, with regards to the early improvement of TBUT and patient compliance, patients using CN improved faster and with greater adherence to drug usage than did those treated with DQ. Trial registration KCT0002180, retrospectively registered on 23 December 2016.
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Affiliation(s)
- Chang Hyun Park
- Department of Ophthalmology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul, 07345, Republic of Korea
| | - Hyung Keun Lee
- The Institute of Vision Research, Department of Ophthalmology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Mee Kum Kim
- Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Eun Chul Kim
- Department of Ophthalmology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Jae Yong Kim
- Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Tae-Im Kim
- The Institute of Vision Research, Department of Ophthalmology, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, Kyungpook National University School of Medicine, Daegu, Republic of Korea
| | - Jong Suk Song
- Department of Ophthalmology, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kyung Chul Yoon
- Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Republic of Korea
| | - Do Hyung Lee
- Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Republic of Korea
| | - Tae-Young Chung
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Chul Young Choi
- Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hyun Seung Kim
- Department of Ophthalmology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 10, 63-ro, Yeongdeungpo-gu, Seoul, 07345, Republic of Korea.
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Kim H, Jang J, Park J, Lee KP, Lee S, Lee DM, Kim KH, Kim HK, Cho DW. Shear-induced alignment of collagen fibrils using 3D cell printing for corneal stroma tissue engineering. Biofabrication 2019; 11:035017. [PMID: 30995622 DOI: 10.1088/1758-5090/ab1a8b] [Citation(s) in RCA: 89] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The microenvironments of tissues or organs are complex architectures comprised of structural proteins including collagen. Particularly, the cornea is organized in a lattice pattern of collagen fibrils which play a significant role in its transparency. This paper introduces a transparent bioengineered corneal structure for transplantation. The structure is fabricated by inducing shear stress to a corneal stroma-derived decellularized extracellular matrix bioink based on a 3D cell printing technique. The printed structure recapitulates the native macrostructure of the cornea with aligned collagen fibrils which results in the construction of a highly matured and transparent cornea stroma analog. The level of shear stress, controlled by the various size of the printing nozzle, manipulates the arrangement of the fibrillar structure. With proper parameter selection, the printed cornea exhibits high cellular alignment capability, indicating a tissue-specific structural organization of collagen fibrils. In addition, this structural regulation enhances critical cellular events in the assembly of collagen over time. Interestingly, the collagen fibrils that remodeled along with the printing path create a lattice pattern similar to the structure of native human cornea after 4 weeks in vivo. Taken together, these results establish the possibilities and versatility of fabricating aligned collagen fibrils; this represents significant advances in corneal tissue engineering.
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Affiliation(s)
- Hyeonji Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, 77 Cheongam-ro, Pohang, Gyeongbuk, 37673, Republic of Korea
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Yang HL, Kim JJ, Kim JH, Kang YK, Park DH, Park HS, Kim HK, Kim MS. Weakly supervised lesion localization for age-related macular degeneration detection using optical coherence tomography images. PLoS One 2019; 14:e0215076. [PMID: 30951557 PMCID: PMC6450633 DOI: 10.1371/journal.pone.0215076] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 03/26/2019] [Indexed: 11/18/2022] Open
Abstract
Age-related macular degeneration (AMD) is the main cause of irreversible blindness among the elderly and require early diagnosis to prevent vision loss, and careful treatment is essential. Optical coherence tomography (OCT), the most commonly used imaging method in the retinal area for the diagnosis of AMD, is usually interpreted by a clinician, and OCT can help diagnose disease on the basis of the relevant diagnostic criteria, but these judgments can be somewhat subjective. We propose an algorithm for the detection of AMD based on a weakly supervised convolutional neural network (CNN) model to support computer-aided diagnosis (CAD) system. Our main contributions are the following three things. (1) We propose a concise CNN model for OCT images, which outperforms the existing large CNN models using VGG16 and GoogLeNet architectures. (2) We propose an algorithm called Expressive Gradients (EG) that extends the existing Integrated Gradients (IG) algorithm so as to exploit not only the input-level attribution map, but also the high-level attribution maps. Due to enriched gradients, EG can highlight suspicious regions for diagnosis of AMD better than the guided-backpropagation method and IG. (3) Our method provides two visualization options: overlay and top-k bounding boxes, which would be useful for CAD. Through experimental evaluation using 10,100 clinical OCT images from AMD patients, we demonstrate that our EG algorithm outperforms the IG algorithm in terms of localization accuracy and also outperforms the existing object detection methods in terms of class accuracy.
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Affiliation(s)
- Hyun-Lim Yang
- Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu, Republic of Korea
| | - Jong Jin Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jong Ho Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Yong Koo Kang
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Dong Ho Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Han Sang Park
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
- * E-mail: (HKK); (MK)
| | - Min-Soo Kim
- Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science & Technology (DGIST), Daegu, Republic of Korea
- * E-mail: (HKK); (MK)
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Jung JU, Lee SH, Kim HK. Effects of Platelet-rich Plasma on Ocular Surface in Patients with Dry Eye Syndrome: Clinico-experimental Analysis. J Korean Ophthalmol Soc 2019. [DOI: 10.3341/jkos.2019.60.12.1169] [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)
- Jae Uk Jung
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
| | | | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
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Kim YM, Eom HD, Yoon DH, Kim HK. Clinical Analysis of Findings for Anterior Segment Optical Coherent Tomography in Recurrent Corneal Erosion Syndrome. J Korean Ophthalmol Soc 2019. [DOI: 10.3341/jkos.2019.60.12.1155] [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)
- Yu Min Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hee Dong Eom
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Dong Hee Yoon
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hong Kyun Kim
- Department of Ophthalmology, School of Medicine, Kyungpook National University, Daegu, Korea
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Huh MI, Yi SJ, Lee KP, Kim HK, An SH, Kim DB, Ryu RH, Kim JS, Lim JO. Full Thickness Skin Expansion ex vivo in a Newly Developed Reactor and Evaluation of Auto-Grafting Efficiency of the Expanded Skin Using Yucatan Pig Model. Tissue Eng Regen Med 2018; 15:629-638. [PMID: 30603584 PMCID: PMC6171704 DOI: 10.1007/s13770-018-0154-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/06/2018] [Accepted: 08/07/2018] [Indexed: 10/28/2022] Open
Abstract
BACKGROUND Skin grafts are required in numerous clinical procedures, such as reconstruction after skin removal and correction of contracture or scarring after severe skin loss caused by burns, accidents, and trauma. The current standard for skin defect replacement procedures is the use of autologous skin grafts. However, donor-site tissue availability remains a major obstacle for the successful replacement of skin defects and often limits this option. The aim of this study is to effectively expand full thickness skin to clinically useful size using an automated skin reactor and evaluate auto grafting efficiency of the expanded skin using Yucatan female pigs. METHODS We developed an automated bioreactor system with the functions of real-time monitoring and remote-control, optimization of grip, and induction of skin porosity for effective tissue expansion. We evaluated the morphological, ultra-structural, and mechanical properties of the expanded skin before and after expansion using histology, immunohistochemistry, and tensile testing. We further carried out in vivo grafting study using Yucatan pigs to investigate the feasibility of this method in clinical application. RESULTS The results showed an average expansion rate of 180%. The histological findings indicated that external expansion stimulated cellular activity in the isolated skin and resulted in successful grafting to the transplanted site. Specifically, hyperplasia did not appear at the auto-grafted site, and grafted skin appeared similar to normal skin. Furthermore, mechanical stimuli resulted in an increase in COL1A2 expression in a suitable environment. CONCLUSIONS These findings provided insight on the potential of this expansion system in promoting dermal extracellular matrix synthesis in vitro. Conclusively, this newly developed smart skin bioreactor enabled effective skin expansion ex vivo and successful grafting in vivo in a pig model.
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Affiliation(s)
- Man-Il Huh
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Soo-Jin Yi
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Kyung-Pil Lee
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Hong Kyun Kim
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
- School of Medicine, Kyungpook National University, 680 Gukchaebosang-ro, Jung-gu, Daegu, 41944 Republic of Korea
| | - Sang-Hyun An
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Dan-Bi Kim
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Rae-Hyung Ryu
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Jun-Sik Kim
- Daegu-Gyeongbuk Medical Innovation Foundation, 88 Dongnae-ro (360-4 Dongnae-dong), Dong-gu, Daegu, 41061 Republic of Korea
| | - Jeong Ok Lim
- Biomedical Research Institute, Joint Institute for Regenerative Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, 130 Dongdeok-ro, Jung-gu, Daegu, 41944 Republic of Korea
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Hong H, Huh MI, Park SM, Lee KP, Kim HK, Kim DS. Decellularized corneal lenticule embedded compressed collagen: toward a suturable collagenous construct for limbal reconstruction. Biofabrication 2018; 10:045001. [PMID: 29978836 DOI: 10.1088/1758-5090/aad1a4] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Recently, compressed collagen has attracted much attention as a potential alternative for a limbal epithelial stem cell (LESC) carrier to treat limbal stem cell deficiency (LSCD), in that it can provide mechanically improved collagen fibrillar structures compared to conventional collagen hydrogel. However, its clinical efficacy as an LESC carrier has not yet been studied through in vivo transplantation due to limited mechanical strength that cannot withstand a force induced by surgical suturing and low resistance to enzymatic degradation. This study firstly presents a suturable LESC carrier based on compressed collagen in the form of a biocomposite. The biocomposite was achieved by integrating a decellularized corneal lenticule, which is a decellularized stromal tissue obtained from corneal refractive surgery, inside a compressed collagen to form a sandwich structure. A suture retention test verified that the biocomposite has a much higher suture retention strength (0.56 ± 0.12 N) compared to the compressed collagen (0.02 ± 0.01 N). The biocomposite also exhibited more than 3 times higher resistance to enzymatic degradation, indicating long-term stability after transplantation. In vitro cell culture results revealed that the biocomposite effectively supported the expansion and stratification of the LESCs with expressions of putative stem cell and differentiated corneal epithelial cell markers. Finally, the biocomposite verified its clinical efficacy by stably delivering the LESCs onto an eye of a rabbit model of LSCD and effectively reconstructing the ocular surface.
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Affiliation(s)
- Hyeonjun Hong
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-ro, Pohang, Gyeongbuk, 37673, Republic of Korea
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Kim JH, Jang JH, Yoon SW, Noh JY, Ahn MJ, Kim Y, Jeong DG, Kim HK. Detection of bovine coronavirus in nasal swab of non-captive wild water deer, Korea. Transbound Emerg Dis 2018; 65:627-631. [PMID: 29508550 PMCID: PMC7169857 DOI: 10.1111/tbed.12847] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [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: 01/03/2018] [Indexed: 11/29/2022]
Abstract
Bovine coronavirus (BCoV) is a causative agent of respiratory and enteric diseases in cattle and calves. BCoV infection was also evident in captive wild ruminants. Recently, water deer are recognized as the most common wildlife to approach farmhouses and livestock barns in Korea. Therefore, we investigated 77 nasal swab samples from non‐captive wild water deer (Hydropotes inermis) between November 2016 and September 2017 and identified three samples positive for coronavirus, indicating potential for respiratory shedding. The full genomic sequences of the water deer coronavirus were closely related to BCoV (>98%). Therefore, effective biosecurity system in bovine farms would be necessary to prevent contact between farm ruminants and free‐ranging wild water deer.
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Affiliation(s)
- J H Kim
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - J-H Jang
- Chungnam Wild Animal Rescue Center, Yesan, Korea
| | - S-W Yoon
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Bio-Analytical Science Division, University of Science and Technology (UST), Daejeon, Korea
| | - J Y Noh
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - M-J Ahn
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Bio-Analytical Science Division, University of Science and Technology (UST), Daejeon, Korea
| | - Y Kim
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,College of Veterinary Medicine, Chungbuk National University, Cheongju, Korea
| | - D G Jeong
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea.,Bio-Analytical Science Division, University of Science and Technology (UST), Daejeon, Korea
| | - H K Kim
- Infectious Diseases Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
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