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Kwon HM, Jeong EH, Yim JE, Kim HR, Shin DH, Choi JS, Bae YK. Methotrexate-Induced Accelerated Nodulosis in a Patient with Systemic Lupus Erythematosus. Ann Dermatol 2023; 35:S272-S274. [PMID: 38061720 PMCID: PMC10727892 DOI: 10.5021/ad.21.312] [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: 12/17/2021] [Revised: 03/17/2022] [Accepted: 04/24/2022] [Indexed: 12/20/2023] Open
Abstract
Methotrexate (MTX)-induced accelerated nodulosis (MIAN) reportedly occurs in patients with rheumatic arthritis receiving MTX therapy. However, it has also been reported in patients with other autoinflammatory conditions, such as systemic lupus erythematosus (SLE). A 38-year-old woman diagnosed with SLE presented with multiple movable, firm, flesh-colored nodules on both hands that had developed 3 years ago. She was taking oral medications, specifically hydroxychloroquine, azathioprine, and MTX. Histopathological examination revealed palisaded granulomatous inflammation, surrounded by histiocytes and lymphocytes, along the dermis to the subcutaneous fat layer. Fibrinoid degeneration was observed at the center of the granulomatous inflammation, and dermal mucin deposition was not observed. The patient was diagnosed with MIAN, and therefore discontinuation of MTX was recommended. Subsequently, the lesions almost completely disappeared with no signs of recurrence. MIAN exhibits clinicopathological features similar to those of rheumatoid nodules; therefore, it can be easily misdiagnosed. Herein, we report a case of MIAN in a patient with SLE to contribute to the accurate diagnosis and appropriate management.
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Affiliation(s)
- Hyeong Mok Kwon
- Department of Dermatology, Yeungnam University College of Medicine, Daegu, Korea
| | - Eun Hye Jeong
- Department of Dermatology, Yeungnam University College of Medicine, Daegu, Korea
| | - Jung Eun Yim
- Department of Dermatology, Yeungnam University College of Medicine, Daegu, Korea
| | - Hye Ri Kim
- Department of Dermatology, Yeungnam University College of Medicine, Daegu, Korea
| | - Dong Hoon Shin
- Department of Dermatology, Yeungnam University College of Medicine, Daegu, Korea.
| | - Jong Soo Choi
- Department of Dermatology, Yeungnam University College of Medicine, Daegu, Korea
| | - Young Kyung Bae
- Department of Pathology, Yeungnam University College of Medicine, Daegu, Korea
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Jeong EH, Lee JY, Han SK, Song YS. Motor subtypes and clinical characteristics in sporadic and genetic Parkinson's disease groups: analysis of the PPMI cohort. Front Neurol 2023; 14:1276251. [PMID: 37954645 PMCID: PMC10634614 DOI: 10.3389/fneur.2023.1276251] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 09/25/2023] [Indexed: 11/14/2023] Open
Abstract
Introduction The extensive clinical variations observed in Parkinson's disease (PD) pose challenges in early diagnosis and treatment initiation. However, genetic research in PD has significantly transformed the clinical approach to its treatment. Moreover, researchers have adopted a subtyping strategy based on homogeneous clinical symptoms to improve clinical diagnosis and treatment approaches. We conducted a study to explore clinical characteristics in genetic PD groups with motor symptom subtyping. Methods Data was driven from the Parkinson's Progression Markers Initiative (PPMI) database. The sporadic PD (sPD) group and the genetic PD group including patients with leucine-rich kinase 2 (LRRK2) or glucosylceramidase β (GBA) mutations were analyzed. Motor subtyping was performed using Movement Disorder Society-Unified Parkinson's disease rating scale (MDS-UPDRS) scores. I-123 FP-CIT SPECT scans were used to calculate specific binding ratios (SBRs) in the caudate and putamen. Clinical symptoms of each group were also compared. Results MDS-UPDRS III scores were lower in the LRRK2 group, compared with the GBA and sPD group (P < 0.001), but no significant differences in striatal SBRs. The putaminal SBR value of the LRRK2 group was higher than the sPD group (P < 0.05). Within the GBA group, we observed lower SBR values in the postural instability/gait difficulty (PIGD) subtype GBA group compared to the tremor-dominant (TD) subtype GBA group (P < 0.05). The TD subtype GBA group exhibited superior putaminal SBRs compared to the TD subtype sPD group (P < 0.05). The TD subtype LRRK2 group had better putaminal SBR values (P < 0.001) and MDS-UPDRS Part III scores (P < 0.05) compared to the TD sPD group. Discussions Our subtyping approach offers valuable insights into the clinical characteristics and progression of different genetic PD subtypes. To further validate and expand these findings, future research with larger groups and long-term follow-up data is needed. The subtyping strategy based on motor symptoms holds promise in enhancing the diagnosis and treatment of genetic PD.
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Affiliation(s)
- Eun Hye Jeong
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Jae Yong Lee
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Sun-Ku Han
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
| | - Yoo Sung Song
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
- College of Medicine, Seoul National University, Seoul, Republic of Korea
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Jeong EH, Sunwoo MK, Lee JY, Han SK, Hyung SW, Song YS. Serial changes of I-123 FP-CIT SPECT binding asymmetry in Parkinson's disease: Analysis of the PPMI data. Front Neurol 2022; 13:976101. [PMID: 36119683 PMCID: PMC9474999 DOI: 10.3389/fneur.2022.976101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 08/03/2022] [Indexed: 11/18/2022] Open
Abstract
Background Dopaminergic denervation and motor symptoms are usually asymmetric at the onset of Parkinson's disease (PD). In this study, we estimated the asymmetry of specific binding ratio (SBR) of I-123 FP-CIT SPECT images during 4-years of follow up, to demonstrate the pattern of serial changes of asymmetry. Methods Clinical and I-123 FP-CIT SPECT image data of 301 PD patients and 141 normal controls were reviewed from the Parkinson's Progression Markers Initiative cohort. I-123 FP-CIT SPECT images were taken at baseline, 1-, 2-, and 4-year follow up periods for PD patients, and at baseline for normal controls. Asymmetry index were calculated by two methods. Method 1, by using the ratio of absolute difference of right and left SBRs to the average SBR. Method 2, by using the ratio of absolute difference of right and left SBRs to the SBR values of age-matched normal controls. Results Asymmetry index by method 2 revealed a more significant decrease during the 4-year follow up period, compared with method 1. The baseline asymmetry index of the putamen by method 2 showed significant correlation with the non-dominant putamen SBRs. However, there were no significant correlation with the baseline asymmetry index by method 2 and motor symptoms, cognition, nor autonomic symptoms. Conclusion We suggest a novel asymmetry index in association to age-matched normal SBR values. This novel index could be adopted in predicting and evaluating the natural course of PD.
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Affiliation(s)
- Eun Hye Jeong
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, South Korea
| | - Mun Kyung Sunwoo
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, South Korea
| | - Jae Yong Lee
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, South Korea
| | - Sun-Ku Han
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, South Korea
| | - Sung Wook Hyung
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam-si, South Korea
| | - Yoo Sung Song
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam-si, South Korea
- Department of Nuclear Medicine, Seoul National University College of Medicine, Seoul, South Korea
- *Correspondence: Yoo Sung Song
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Ji CH, Kim HY, Lee MJ, Heo AJ, Park DY, Lim S, Shin S, Ganipisetti S, Yang WS, Jung CA, Kim KY, Jeong EH, Park SH, Bin Kim S, Lee SJ, Na JE, Kang JI, Chi HM, Kim HT, Kim YK, Kim BY, Kwon YT. Author Correction: The AUTOTAC chemical biology platform for targeted protein degradation via the autophagy-lysosome system. Nat Commun 2022; 13:2108. [PMID: 35413961 PMCID: PMC9005611 DOI: 10.1038/s41467-022-29845-w] [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: 11/21/2022] Open
Affiliation(s)
- Chang Hoon Ji
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Hee Yeon Kim
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Min Ju Lee
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Ah Jung Heo
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Daniel Youngjae Park
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Sungsu Lim
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea
| | - Seulgi Shin
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea.,Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Korea
| | - Srinivasrao Ganipisetti
- Brown Cancer Center, University of Louisville, 529 S Jackson Street, Louisville, KY, 40202, USA
| | - Woo Seung Yang
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea
| | - Chang An Jung
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Kun Young Kim
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Eun Hye Jeong
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Sun Ho Park
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Su Bin Kim
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Su Jin Lee
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Jeong Eun Na
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Ji In Kang
- Anticancer Agents Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongju, 28116, Korea
| | - Hyung Min Chi
- Department of Chemisty, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Hyun Tae Kim
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Yun Kyung Kim
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea. .,Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Korea.
| | - Bo Yeon Kim
- Anticancer Agents Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongju, 28116, Korea. .,Department of Biomolecular Science, KRIBB School, University of Science and Technology (UST), Daejeon, 34113, Korea.
| | - Yong Tae Kwon
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea. .,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea. .,SNU Dementia Research Center, College of Medicine, Seoul National University, Seoul, 110-799, Republic of Korea.
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Ji CH, Kim HY, Lee MJ, Heo AJ, Park DY, Lim S, Shin S, Ganipisetti S, Yang WS, Jung CA, Kim KY, Jeong EH, Park SH, Bin Kim S, Lee SJ, Na JE, Kang JI, Chi HM, Kim HT, Kim YK, Kim BY, Kwon YT. The AUTOTAC chemical biology platform for targeted protein degradation via the autophagy-lysosome system. Nat Commun 2022; 13:904. [PMID: 35173167 PMCID: PMC8850458 DOI: 10.1038/s41467-022-28520-4] [Citation(s) in RCA: 78] [Impact Index Per Article: 39.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 01/25/2022] [Indexed: 11/16/2022] Open
Abstract
Targeted protein degradation allows targeting undruggable proteins for therapeutic applications as well as eliminating proteins of interest for research purposes. While several degraders that harness the proteasome or the lysosome have been developed, a technology that simultaneously degrades targets and accelerates cellular autophagic flux is still missing. In this study, we develop a general chemical tool and platform technology termed AUTOphagy-TArgeting Chimera (AUTOTAC), which employs bifunctional molecules composed of target-binding ligands linked to autophagy-targeting ligands. AUTOTACs bind the ZZ domain of the otherwise dormant autophagy receptor p62/Sequestosome-1/SQSTM1, which is activated into oligomeric bodies in complex with targets for their sequestration and degradation. We use AUTOTACs to degrade various oncoproteins and degradation-resistant aggregates in neurodegeneration at nanomolar DC50 values in vitro and in vivo. AUTOTAC provides a platform for selective proteolysis in basic research and drug development. Targeted protein degradation is a promising approach for basic research and therapeutic applications. Here, the authors develop a targeted protein degradation platform called AUTOTAC to degrade oncoproteins and neurodegeneration-associated proteins via the p62-dependent autophagy-lysosome system.
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Affiliation(s)
- Chang Hoon Ji
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Hee Yeon Kim
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Min Ju Lee
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Ah Jung Heo
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea.,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Daniel Youngjae Park
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Sungsu Lim
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea
| | - Seulgi Shin
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea.,Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Korea
| | - Srinivasrao Ganipisetti
- Brown Cancer Center, University of Louisville, 529 S Jackson Street, Louisville, KY, 40202, USA
| | - Woo Seung Yang
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea
| | - Chang An Jung
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Kun Young Kim
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Eun Hye Jeong
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Sun Ho Park
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Su Bin Kim
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Su Jin Lee
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea
| | - Jeong Eun Na
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Ji In Kang
- Anticancer Agents Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongju, 28116, Korea
| | - Hyung Min Chi
- Department of Chemisty, Pohang University of Science and Technology, Pohang, 37673, Korea
| | - Hyun Tae Kim
- AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea
| | - Yun Kyung Kim
- Convergence Research Center for Brain Science, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Korea. .,Division of Bio-Medical Science & Technology, KIST School, University of Science and Technology (UST), Seoul, 02792, Korea.
| | - Bo Yeon Kim
- Anticancer Agents Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Cheongju, 28116, Korea. .,Department of Biomolecular Science, KRIBB School, University of Science and Technology (UST), Daejeon, 34113, Korea.
| | - Yong Tae Kwon
- Cellular Degradation Biology Center and Department of Biomedical Sciences, College of Medicine, Seoul National University, Seoul, 03080, Korea. .,AUTOTAC Bio Inc., Changkkyunggung-ro 254, Jongno-gu, Seoul, 03080, Korea. .,SNU Dementia Research Center, College of Medicine, Seoul National University, Seoul, 110-799, Republic of Korea.
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Jeong EH, Sunwoo MK, Hyung SW, Han SK, Lee JY. Correlation of Dopaminergic Denervation and the Progression of Autonomic Dysfunctions in Different Clinical Subtypes of Parkinson's Disease. Parkinsons Dis 2021; 2021:2268651. [PMID: 34868542 PMCID: PMC8642015 DOI: 10.1155/2021/2268651] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 11/08/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Autonomic dysfunctions occur in the early stage of Parkinson's disease (PD) and impact the quality of life during the progression of the disease. In this study, we evaluated the serial progression of autonomic dysfunctions between different subtypes of a prospective PD cohort. MATERIALS AND METHODS From the Parkinson's Progression Markers Initiative (PPMI) database, 325 PD patients (age: 61.2 ± 9.7, M : F = 215 : 110) were enrolled. Patients were subgrouped into tremor-dominant (TD), indeterminate, and postural instability and gait disorder (PIGD) subtypes. The progression of autonomic dysfunctions and dopaminergic denervation from I-123 FP-CIT SPECT images of each group were analyzed and compared at baseline, 12 months, 24 months, and 48 months of follow-up periods. RESULTS The SCOPA-AUT score of the indeterminate subtype was significantly higher than that of the TD subtype (P < 0.05) at baseline and was significantly higher than that of both TD and PIGD subtypes (P < 0.05) at 48 months. The indeterminate subtype had the most significant correlation between the aggravation of dopaminergic denervation in I-123 FP-CIT SPECT images and the increase of SCOPA-AUT scores during 48 months of follow-up (r = 0.56, P < 0.01). CONCLUSIONS Autonomic dysfunctions were most severe in the indeterminate subtype throughout the 48 months of the follow-up period, with a significant correlation with dopaminergic denervation. We suggest a positive relationship between dopaminergic denervation and autonomic dysfunctions of the indeterminate subtype, beginning from the early stage of PD.
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Affiliation(s)
- Eun Hye Jeong
- Bundang Jesaeng Hospital, Department of Neurology, Seongnam, Gyeonggido, Republic of Korea
| | - Mun Kyung Sunwoo
- Bundang Jesaeng Hospital, Department of Neurology, Seongnam, Gyeonggido, Republic of Korea
| | - Sung Wook Hyung
- Bundang Jesaeng Hospital, Department of Neurology, Seongnam, Gyeonggido, Republic of Korea
| | - Sun-Ku Han
- Bundang Jesaeng Hospital, Department of Neurology, Seongnam, Gyeonggido, Republic of Korea
| | - Jae Yong Lee
- Bundang Jesaeng Hospital, Department of Neurology, Seongnam, Gyeonggido, Republic of Korea
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Kim CJ, Kim GH, Jeong EH, Lee H, Park SJ. The core composition of DNA block copolymer micelles dictates DNA hybridization properties, nuclease stabilities, and cellular uptake efficiencies. Nanoscale 2021; 13:13758-13763. [PMID: 34477650 DOI: 10.1039/d1nr00756d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Here, we report how the nature of the hydrophobic core affects the molecular interactions of DNA block copolymer assemblies. Three different amphiphilic DNA block copolymers, DNA-b-polystyrene (DNA-b-PS), DNA-b-poly(2-vinylpyridine) (DNA-b-P2VP), and DNA-b-poly(methyl acrylate) (DNA-b-PMA) were synthesized and assembled into spherical micelles composed of a hydrophobic polymer core and DNA corona. Interestingly, DNA block copolymer micelles having different hydrophobic cores exhibited markedly different molecular and biological interactions. DNA-b-PS exhibited higher melting temperature, sharper melting transition, higher stability to nuclease-catalyzed DNA degradation, and higher cellular uptake efficiency compared to DNA-b-P2VP and DNA-b-PMA. The investigation of the self-assembly behavior revealed a much higher aggregation number and DNA density for DNA-b-PS micelles, which explains the superior properties of DNA-b-PS. These results demonstrate that the type of the hydrophobic core polymer, which has been largely overlooked, has a profound impact on the molecular and biological interactions of the DNA shell.
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Affiliation(s)
- Chan-Jin Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
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Kim BS, Park YK, Sunwoo MK, Yu HJ, Jeong EH, Kim DY. Is the Presence of Headache Indispensable in Diagnosing Reversible Cerebral Vasoconstriction Syndrome? J Clin Neurol 2019; 15:588-590. [PMID: 31591855 PMCID: PMC6785462 DOI: 10.3988/jcn.2019.15.4.588] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/21/2019] [Accepted: 06/27/2019] [Indexed: 11/17/2022] Open
Affiliation(s)
- Byung Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea.
| | - Yun Kyung Park
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Mun Kyung Sunwoo
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Hyun Jeung Yu
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Eun Hye Jeong
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
| | - Dae Yoon Kim
- Department of Radiology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, Korea
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Kim CJ, Jeong EH, Lee H, Park SJ. A dynamic DNA nanostructure with switchable and size-selective molecular recognition properties. Nanoscale 2019; 11:2501-2509. [PMID: 30672552 DOI: 10.1039/c8nr09341e] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Herein, we report a dynamic DNA nanostructure exhibiting switchable and size-selective molecular recognition properties. A DNA block copolymer, polystyrene-b-DNA (PS-b-DNA), and a thermo-responsive block copolymer, PS-b-poly(N-isopropylacrylamide) (PS-b-PNIPAM), were simultaneously assembled to form hybrid micelles composed of a PS core and a DNA/PNIPAM corona. PNIPAM strands did not significantly hinder the binding of molecular DNA for a broad range of PNIPAM lengths. On the other hand, they exerted significant steric hindrance for interactions with nanoscale species, which can be reversibly turned off by increasing the temperature above the lower critical solution temperature (LCST) of PNIPAM. Owing to the switchable and size-selective steric hindrance, the hybrid DNA micelles showed thermally controllable enzymatic degradation and cellular uptake. These results demonstrate that the binary self-assembly of two different responsive block copolymers is a promising approach to prepare dynamic nanostructures with controllable biological recognition properties.
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Affiliation(s)
- Chan-Jin Kim
- Department of Chemistry and Nanoscience, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea.
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Jeong EH, Sunwoo MK, Song YS. Serial I-123-FP-CIT SPECT Image Findings of Parkinson's Disease Patients With Levodopa-Induced Dyskinesia. Front Neurol 2018; 9:1133. [PMID: 30619078 PMCID: PMC6307417 DOI: 10.3389/fneur.2018.01133] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 12/10/2018] [Indexed: 11/17/2022] Open
Abstract
Background: Levodopa-induced dyskinesia (LID) is a major complication of dopamine replacement drug usage in Parkinson's disease (PD) patients. Since the mechanism of LID is yet unclear, we analyzed serial [I-123] N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl) nortropane (I-123 FP-CIT) single photon emission computed tomography (SPECT) images. We investigated the changes of dopaminergic innervation during the progression of PD in relation to the development of LID. Methods: Data were obtained from the Parkinson's Progression Markers Initiative (PPMI) database. Two hundred and ninety PD dopamine replacement drug-naïve patients (age 61.0 ± 9.7, M: F = 195: 95) were enrolled. I-123 FP-CIT SPECT images from baseline, 12, 24, and 48 months were analyzed among with clinical factors. specific binding ratios (SBRs) of the striatal regions from I-123 FP-CIT SPECT images were analyzed. We used independent tests and logistic regression for analysis of LID risk association. Results: Among 290 patients, 36 patients developed LID after 48 months follow-up. Baseline MDS-UPDRS Part II and III scores were significantly higher in the PD patients with LID, compared with the PD patients without LID. Striatal SBRs were significantly lower in the PD patients with LID at baseline, 24 and 48 months (p < 0.001). Multivariate analysis revealed MDS-UPDRS Part II and putaminal SBRs at baseline and 24 months to be significantly associated with the development of LID (p < 0.001). Also, patients who developed LID at 48 months had a higher decrease rate of putaminal SBR at the 24 months (p < 0.05), and 48 months (p < 0.01) period. Conclusion: In this study, we demonstrated the serial changes of the nigrostriatal dopaminergic innervation in relationship to LID development for the first time. The deterioration rate of dopaminergic innervation was significantly higher in the PD patients who developed LID, compared with the PD patients who did not develop LID. Serial follow up I-123 FP-CIT SPECT acquisition during the course of PD could be helpful in predicting the development of LID.
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Affiliation(s)
- Eun Hye Jeong
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, South Korea
| | - Mun Kyung Sunwoo
- Department of Neurology, Bundang Jesaeng General Hospital, Daejin Medical Center, Seongnam, South Korea
| | - Yoo Sung Song
- Department of Nuclear Medicine, Seoul National University Bundang Hospital, Seongnam, South Korea
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Jang B, Kim B, Kim H, Kwon H, Kim M, Seo Y, Colas M, Jeong H, Jeong EH, Lee K, Lee H. Enzymatic Synthesis of Self-assembled Dicer Substrate RNA Nanostructures for Programmable Gene Silencing. Nano Lett 2018; 18:4279-4284. [PMID: 29863365 DOI: 10.1021/acs.nanolett.8b01267] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Enzymatic synthesis of RNA nanostructures is achieved by isothermal rolling circle transcription (RCT). Each arm of RNA nanostructures provides a functional role of Dicer substrate RNA inducing sequence specific RNA interference (RNAi). Three different RNAi sequences (GFP, RFP, and BFP) are incorporated within the three-arm junction RNA nanostructures (Y-RNA). The template and helper DNA strands are designed for the large-scale in vitro synthesis of RNA strands to prepare self-assembled Y-RNA. Interestingly, Dicer processing of Y-RNA is highly influenced by its physical structure and different gene silencing activity is achieved depending on its arm length and overhang. In addition, enzymatic synthesis allows the preparation of various Y-RNA structures using a single DNA template offering on demand regulation of multiple target genes.
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Affiliation(s)
- Bora Jang
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Boyoung Kim
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Hyunsook Kim
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Hyokyoung Kwon
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Minjeong Kim
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Yunmi Seo
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Marion Colas
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
- Faculté de Pharmacie de Paris , Université Paris Descartes , Paris 75006 , France
| | - Hansaem Jeong
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Eun Hye Jeong
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Kyuri Lee
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
| | - Hyukjin Lee
- College of Pharmacy, Graduate School of Pharmaceutical Sciences , Ewha Womans University , Seoul 03760 , Republic of Korea
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Jeong EH, Jeong H, Jang B, Kim B, Kim M, Kwon H, Lee K, Lee H. Aptamer-incorporated DNA Holliday junction for the targeted delivery of siRNA. J IND ENG CHEM 2017. [DOI: 10.1016/j.jiec.2017.07.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Jeong EH, Kim H, Jang B, Cho H, Ryu J, Kim B, Park Y, Kim J, Lee JB, Lee H. Technological development of structural DNA/RNA-based RNAi systems and their applications. Adv Drug Deliv Rev 2016; 104:29-43. [PMID: 26494399 DOI: 10.1016/j.addr.2015.10.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 09/01/2015] [Accepted: 10/12/2015] [Indexed: 01/04/2023]
Abstract
RNA interference (RNAi)-based gene therapy has drawn tremendous attention due to its highly specific gene regulation by selective degradation of any target mRNA. There have been multiple reports regarding the development of various cationic materials for efficient siRNA delivery, however, many studies still suffer from the conventional delivery problems such as suboptimal transfection performance, a lack of tissue specificity, and potential cytotoxicity. Despite the huge therapeutic potential of siRNAs, conventional gene carriers have failed to guarantee successful gene silencing in vivo, thus not warranting clinical trials. The relatively short double-stranded structure of siRNAs has resulted in uncompromising delivery formulations, as well as low transfection efficiency, compared with the conventional nucleic acid drugs such as plasmid DNAs. Recent developments in structural siRNA and RNAi nanotechnology have enabled more refined and reliable in vivo gene silencing with multiple advantages over naked siRNAs. This review focuses on recent progress in the development of structural DNA/RNA-based RNAi systems and their potential therapeutic applications. In addition, an extensive list of prior reports on various RNAi systems is provided and categorized by their distinctive molecular characters.
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Jang HS, Roh SY, Jeong EH, Kim BS, Sunwoo MK. Ginkgotoxin Induced Seizure Caused by Vitamin B6 Deficiency. J Epilepsy Res 2015; 5:104-6. [PMID: 26819944 PMCID: PMC4724850 DOI: 10.14581/jer.15018] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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] [Received: 06/30/2015] [Accepted: 08/22/2015] [Indexed: 12/04/2022] Open
Abstract
Although ginkgo is commonly used as an alternative treatment for memory loss, Alzheimer’s dementia and peripheral circulatory disturbances, it is also known to cause neuronal symptoms due to ginkgotoxin (4′-methoxypyridoxine or B6 antivitamin). We experienced a case of a 51-year-old female patient with generalized tonic clonic seizure and postictal confusion after eating large amounts of ginkgo nuts. Blood vitamin B6 level was decreased. After conservative treatment and pyridoxine medication, her mental symptoms were resolved completely and no seizures recurred.
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Affiliation(s)
- Hyun-Soon Jang
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Sook Young Roh
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Eun Hye Jeong
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Byung-Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Mun Kyung Sunwoo
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
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Roh SY, Jang HS, Jeong EH, Kim BS, Sunwoo MK. Valproic Acid-induced Hyperammonemic Encephalopathy Promoted by Levetiracetam. J Epilepsy Res 2014; 4:82-4. [PMID: 25625094 PMCID: PMC4295059 DOI: 10.14581/jer.14017] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 10/18/2014] [Indexed: 11/29/2022] Open
Abstract
Encephalopathy resulting from the administration of levetiracetam (LEV) is a rare occurrence. We experienced a patient receiving LEV treated with valproic acid (VPA) for partial seizures with secondary generalization, following which she developed hyperammonemic encephalopathy and showed complete recovery after the drug was withdrawan. LEV is able to promote hyperammonemic encephalopathy when added to VPA.
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Affiliation(s)
- Sook Young Roh
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Hyun-Soon Jang
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Eun Hye Jeong
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Byung-Su Kim
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Moon Kyung Sunwoo
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
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Jeong EH, Jang HS, Yu HJ, Roh SY, Choi JW. Spontaneous Isolated Dissection of the Posterior Inferior Cerebellar Artery Presenting with Lateral Medullary Infarction. J Neurocrit Care 2014. [DOI: 10.18700/jnc.2014.7.2.137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Jeong EH, Ryu JH, Jeong H, Jang B, Lee HY, Hong S, Lee H, Lee H. Efficient delivery of siRNAs by a photothermal approach using plant flavonoid-inspired gold nanoshells. Chem Commun (Camb) 2014; 50:13388-90. [PMID: 25234123 DOI: 10.1039/c4cc07155g] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer gold nanoshells (PGNs) are prepared by a novel plant-inspired flavonoid surface modification method. The PGNs show dramatic photothermal properties, which can facilitate the endosomal escape and delivery of siRNA into the cytoplasm of cells. Efficient gene silencing has been achieved using siRNA immobilized PGNs, suggesting the potential applications of in vitro gene regulation by an external NIR stimulus.
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Affiliation(s)
- Eun Hye Jeong
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul 120-750, Republic of Korea.
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Lee KE, Jeong EH, Yu HJ, Choi SS, Rhim JK, Kwon KW, Roh SY. Cerebral infarction caused by a tortuous subclavian artery: a case report. Neurointervention 2014; 9:53-5. [PMID: 24644532 PMCID: PMC3955824 DOI: 10.5469/neuroint.2014.9.1.53] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 12/30/2013] [Indexed: 11/24/2022] Open
Abstract
Tortuous arteries are common clinical observation. Although mild tortuosity is asymptomatic, severe tortuosity can lead to ischemic attack in several organs. With advances in imaging technology, an increasing number of tortuous vessels have been detected. The purpose of this report is to describe a case of acute cerebral infarction due to tortuous subclavian artery and to review the literature.
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Affiliation(s)
- Ku-Eun Lee
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Eun Hye Jeong
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Hyun-Jeung Yu
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Soung Sil Choi
- Department of Thoracic and Cardiovascular Surgery, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Jong Kook Rhim
- Department of Neurosurgery, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Kye Won Kwon
- Department of Pathology, Bundang Jesaeng General Hospital, Seongnam, Korea
| | - Sook Young Roh
- Department of Neurology, Bundang Jesaeng General Hospital, Seongnam, Korea
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Jeong EH, Ryu JH, Jeong H, Jang B, Lee HY, Hong S, Lee H, Lee H. Correction: Efficient delivery of siRNAs by a photothermal approach using plant flavonoid-inspired gold nanoshells. Chem Commun (Camb) 2014. [DOI: 10.1039/c4cc90400a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hong CA, Jang B, Jeong EH, Jeong H, Lee H. Self-assembled DNA nanostructures prepared by rolling circle amplification for the delivery of siRNA conjugates. Chem Commun (Camb) 2014; 50:13049-51. [DOI: 10.1039/c4cc03834g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Large-scale preparation of DNA nanostructures for siRNA delivery has been achieved by an isothermal enzymatic amplification process.
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Affiliation(s)
- Cheol Am Hong
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750, Republic of Korea
| | - Bora Jang
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750, Republic of Korea
| | - Eun Hye Jeong
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750, Republic of Korea
| | - Hansaem Jeong
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750, Republic of Korea
| | - Hyukjin Lee
- College of Pharmacy
- Graduate School of Pharmaceutical Sciences
- Ewha Womans University
- Seoul 120-750, Republic of Korea
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Abstract
Agrammatic primary progressive aphasia (PPA-G) has been known to be associated with focal brain atrophy involving the left posterior frontal and anterior insular regions. However, aphasia can also rarely result from right hemispheric lesions in right-handed patients, so-called crossed aphasia in dextrals (CAD). We report two right-handed patients with PPA-G whose 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET) showed hypometabolism predominantly in the right hemisphere, implicating "crossed PPA-G."
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Affiliation(s)
- Eun Hye Jeong
- a Department of Neurology , Asan Medical Center, University of Ulsan College of Medicine , Seoul , Republic of Korea
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Jeong EH, Lee YJ, Lee J. P3–102: Is the severity of dilated Virchow‐Robin spaces associated with cognitive function? Alzheimers Dement 2013. [DOI: 10.1016/j.jalz.2013.05.1173] [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: 10/26/2022]
Affiliation(s)
- Eun Hye Jeong
- Asan Medical Center, University of Ulsan College of Medicine/Bundang Jesaeng General Hospital Seoul/Seongnam South Korea
| | - Yong Joo Lee
- Asan Medical Center, University of Ulsan College of Medicine Seoul South Korea
| | - Jae‐Hong Lee
- Asan Medical Center, University of Ulsan College of Medicine Seoul South Korea
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Jeong EH, Kim H, Lee J. P3‐174: Can we further divide amnestic mild cognitive impairment based on the pattern of memory deficit? Alzheimers Dement 2012. [DOI: 10.1016/j.jalz.2012.05.1394] [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: 10/28/2022]
Affiliation(s)
| | - Heeyoung Kim
- Asan Medical CenterUniversity of Ulsan College of MedicineSeoulSouth Korea
| | - Jae‐Hong Lee
- Asan Medical CenterUniversity of Ulsan College of MedicineSeoulSouth Korea
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Woo SJ, Park KH, Ahn J, Oh KJ, Lee SY, Jeong EH, Park KH. A co-twin study of the relative effect of birth weight and gestational age on retinopathy of prematurity. Eye (Lond) 2011; 25:1478-83. [PMID: 21869833 DOI: 10.1038/eye.2011.208] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE To determine the relative effect of birth weight and gestational age on retinopathy of prematurity (ROP) using preterm twin pairs discordant for birth weight. METHODS This study was a retrospective cohort study including 55 consecutive twin pairs of 110 preterm infants (gestational age ≤33 weeks). The outcomes of ROP including occurrence (any stage), severe ROP (stage 3 or more), and clinically significant ROP requiring laser treatment were compared between twins with the lower birth weight from each pair and their co-twins with the higher birth weight. Using twin pairs having different birth weight and identical gestational age, the independent effects of prematurity and intrauterine growth on ROP could be evaluated. Other perinatal morbidities related to prematurity were also compared between twin pairs. RESULTS No significant differences in ROP between larger and smaller infants were observed in the twin-paired analysis while analysis on individual infants showed strong association between small birth weight and ROP outcomes. However, in both the larger and smaller infant groups, gestational age of <28 weeks was significantly associated with ROP outcomes. No differences were found between twin pairs regarding other perinatal morbidities including bronchopulmonary dysplasia, respiratory distress syndrome, patent ductus arteriosus, intraventricular hemorrhage, and periventricular leukomalacia. CONCLUSIONS Birth weight is not associated with ROP, while gestational age is in the twin-paired study, suggesting that gestational age is a better predictor of ROP than birth weight. This indicates that maturity is more important in the pathogenesis of ROP than intrauterine growth.
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Affiliation(s)
- S J Woo
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
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Oh KJ, Park KH, Kim SN, Jeong EH, Lee SY, Yoon HY. Predictive value of intra-amniotic and serum markers for inflammatory lesions of preterm placenta. Placenta 2011; 32:732-6. [PMID: 21839511 DOI: 10.1016/j.placenta.2011.07.080] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 07/16/2011] [Accepted: 07/18/2011] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To compare the relative predictive values of amniotic fluid (AF) matrix metalloproteinase-9 (MMP-9), interleukin-6 (IL-6), and serum C-reactive protein (CRP) for histologic chorioamnionitis and intra-amniotic infection in women with preterm labor or preterm premature rupture of membranes (PROM). STUDY DESIGN This retrospective cohort study included 99 consecutive women with preterm labor or preterm PROM (21-35 weeks' gestation) who delivered within 72 h of transabdominal amniocentesis. The AF was cultured for aerobic and anaerobic bacteria and for genital mycoplasmas and was assayed for MMP-9 and IL-6 levels. Maternal serum CRP was measured immediately after amniocentesis. The placentas were examined histologically. MAIN OUTCOME MEASURES histologic chorioamnionitis and intra-amniotic infection. RESULTS The prevalence of histologic chorioamnionitis and a positive AF culture was 44% (44/99) and 28% (28/99), respectively. In predicting intra-amniotic infection, AF MMP-9 had a significantly higher area under the curve (AUC: 0.94 [95% CI, 0.87-0.98]) than AF IL-6 (0.87 [95% CI, 0.78-0.84]; P < 0.05) and serum CRP (0.76 [95% CI, 0.66-0.84]; P < 0.001) and a higher sensitivity and specificity than serum CRP (P < 0.01, respectively). However, in predicting histologic chorioamnionitis, there were no significant differences in AUCs among the three tests (AF MMP-9: 0.78 [95% CI, 0.68-0.85]; AF IL-6: 0.76 [95% CI, 0.66-0.84]; serum CRP: 0.76 [95% CI, 0.66-0.84]). In a sub-analysis of 71 women without intra-amniotic infection, histologic chorioamnionitis was associated with an elevated serum CRP level (P < 0.05), but not with the level of AF IL-6 or MMP-9 (P = 0.232 and P = 0.402, respectively). CONCLUSIONS The AF MMP-9 has a better overall diagnostic performance than the AF IL-6 and maternal serum CRP in predicting intra-amniotic infection. However, the serum CRP level obtained up to 72 h before delivery appears to be an important marker for early identification of histologic chorioamnionitis in women without intra-amniotic infection.
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Affiliation(s)
- K J Oh
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam-si, Gyeonggi-do, Republic of Korea
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Park KH, Kim SN, Lee SY, Jeong EH, Jung HJ, Oh KJ. Comparison between sonographic cervical length and Bishop score in preinduction cervical assessment: a randomized trial. Ultrasound Obstet Gynecol 2011; 38:198-204. [PMID: 21484904 DOI: 10.1002/uog.9020] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVE To compare sonographically measured cervical length with the Bishop score in determining the requirement for prostaglandin administration for preinduction cervical ripening in nulliparae at term. METHODS One hundred and fifty-four women with singleton pregnancies at term who were scheduled for induction of labor were randomly assigned to receive prostaglandin for preinduction cervical ripening based on the Bishop score or sonographic cervical length. A cervix unfavorable for treatment with prostaglandin for preinduction cervical ripening was defined as having either a Bishop score of ≤ 4 or a cervical length of ≥ 28 mm. The primary outcome measures were induction success (defined as an ability to achieve the active phase of labor) and the percentage of patients treated with prostaglandin for preinduction cervical ripening. RESULTS The two groups were similar with respect to maternal demographics, gestational age, cervical length, and Bishop score. The rates of induction success and Cesarean delivery, the interval to active phase of labor, and the interval to delivery were also similar in the two groups. However, in the transvaginal ultrasound group (n = 77), prostaglandin was administered to only 36% of the nulliparae compared with 75% of those in the Bishop score group (n = 77) (P < 0.0001). CONCLUSION In comparison with the Bishop score, the use of sonographic cervical length for assessing the cervix prior to induction of labor can reduce the need for prostaglandin administration by approximately 50% without adversely affecting the outcome of induction in nulliparae at term if the cut-off values used are a Bishop score of ≤ 4 and a cervical length of ≥ 28 mm.
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Affiliation(s)
- K H Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnamsi, Korea.
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Choi BO, Hwang JH, Cho EM, Jeong EH, Hyun YS, Jeon HJ, Seong KM, Cho NS, Chung KW. Mutational analysis of whole mitochondrial DNA in patients with MELAS and MERRF diseases. Exp Mol Med 2010; 42:446-55. [PMID: 20440095 DOI: 10.3858/emm.2010.42.6.046] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Mitochondrial diseases are clinically and genetically heterogeneous disorders, which make the exact diagnosis and classification difficult. The purpose of this study was to identify pathogenic mtDNA mutations in 61 Korean unrelated families (or isolated patients) with MELAS or MERRF. In particular, the mtDNA sequences were completely determined for 49 patients. From the mutational analysis of mtDNA obtained from blood, 5 confirmed pathogenic mutations were identified in 17 families, and 4 unreported pathogenically suspected mutations were identified in 4 families. The m.3243A>G in the tRNA(Leu(UUR))was predominantly observed in 10 MELAS families, and followed by m.8344A>G in the tRNA(Lys) of 4 MERRF families. Most pathogenic mutations showed heteroplasmy, and the rates were considerably different within the familial members. Patients with a higher rate of mutations showed a tendency of having more severe clinical phenotypes, but not in all cases. This study will be helpful for the molecular diagnosis of mitochondrial diseases, as well as establishment of mtDNA database in Koreans.
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Affiliation(s)
- Byung-Ok Choi
- Department of Neurology, Ewha Womans University, School of Medicine, Ewha Medical Research Institute, Seoul, Korea
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Jeong EH, Shin JS, Park EK, Hwang SJ, Cho SY, Chung KW, Choi BO. PO7.9 Phenotypes of 117 Korean Patients with Mitochondrial Disorders. Clin Neurophysiol 2009. [DOI: 10.1016/s1388-2457(09)60220-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
Recombinant SNAREs have been demonstrated as the minimal membrane fusion machinery. The participation of additional proteins in the regulation of membrane fusion has been suggested. In this study we provide nanometer-resolution images of native NSF oligomers and SNARE complexes isolated from neurons and the pancreas. Our study reveals the presence of new coiled rod-like structures in association with the SNARE complex only in neuronal tissue. Neuronal SNAREs were found coiled and super-coiled with these structures. The existence of NSF as pentamers in its native state is also demonstrated. The extent of coiling and super-coiling of SNAREs may regulate the potency and efficacy of membrane fusion in cells.
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Affiliation(s)
- E H Jeong
- Department of Surgery & Biomedical Engineering Program, Yale University School of Medicine, New Haven, CT 06510, USA
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30
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Abstract
Laparoscopic management of huge adnexal masses is controversial mainly because of the fear of finding a malignancy and because of technical difficulties. We successfully removed two huge ovarian cysts using only an operative laparoscope, a 10-mm infraumbilical, and three 5-mm suprapubic cannulas. We believe that minimally invasive surgery can be performed safely and effectively in carefully selected patients with extremely large, abdominopelvic masses.
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Affiliation(s)
- E H Jeong
- Department of Obstetrics and Gynecology, Chungbuk National University Hospital and College of Medicine, 62 Gaesin-Dong, lleungdeak-Gu, Cheongju, 361-240 Korea
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