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Jung O, Jung HY, Thuy LT, Choi M, Kim S, Jeon HG, Yang J, Kim SM, Kim TD, Lee E, Kim Y, Choi JS. Modulating Lipid Nanoparticles with Histidinamide-Conjugated Cholesterol for Improved Intracellular Delivery of mRNA. Adv Healthc Mater 2024:e2303857. [PMID: 38344923 DOI: 10.1002/adhm.202303857] [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: 01/04/2024] [Revised: 02/07/2024] [Indexed: 02/22/2024]
Abstract
Recently, mRNA-based therapeutics, including vaccines, have gained significant attention in the field of gene therapy for treating various diseases. Among the various mRNA delivery vehicles, lipid nanoparticles (LNPs) have emerged as promising vehicles for packaging and delivering mRNA with low immunogenicity. However, while mRNA delivery has several advantages, the delivery efficiency and stability of LNPs remain challenging for mRNA therapy. In this study, an ionizable helper cholesterol analog, 3β[L-histidinamide-carbamoyl] cholesterol (Hchol) lipid is developed and incorporated into LNPs instead of cholesterol to enhance the LNP potency. The pKa values of the Hchol-LNPs are ≈6.03 and 6.61 in MC3- and SM102-based lipid formulations. Notably, the Hchol-LNPs significantly improve the delivery efficiency by enhancing the endosomal escape of mRNA. Additionally, the Hchol-LNPs are more effective in a red blood cell hemolysis at pH 5.5, indicating a synergistic effect of the protonated imidazole groups of Hchol and cholesterol on endosomal membrane destabilization. Furthermore, mRNA delivery is substantially enhanced in mice treated with Hchol-LNPs. Importantly, LNP-encapsulated SARS-CoV-2 spike mRNA vaccinations induce potent antigen-specific antibodies against SARS-CoV-2. Overall, incorporating Hchol into LNP formulations enables efficient endosomal escape and stability, leading to an mRNA delivery vehicle with a higher delivery efficiency.
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Affiliation(s)
- Onesun Jung
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Hye-Youn Jung
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Le Thi Thuy
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Minyoung Choi
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Seongyeon Kim
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Hae-Geun Jeon
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Jihyun Yang
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Seok-Min Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
- Bioscience Major, KRIBB School, Korea University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Eunjung Lee
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Yoonkyung Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
- Bioscience Major, KRIBB School, Korea University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Joon Sig Choi
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
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Kim JY, Hong JY, Kim SM, Ryu KH, Kim DS, Lee SH, Na JH, Cho HH, Yu J, Lee J. Socio-economic factors and medical conditions affecting regular stomach cancer screening in Korea: a retrospective longitudinal study using national public health data for 11 years. Public Health 2024; 227:70-77. [PMID: 38128357 DOI: 10.1016/j.puhe.2023.11.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 08/25/2023] [Revised: 11/03/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023]
Abstract
OBJECTIVE This study aimed to explore socio-economic factors and medical conditions that affect regular stomach cancer (SC) screening among Korean adults. STUDY DESIGN This was a retrospective observational study. METHODS Study subjects were 5545 adults aged ≥40 years who participated in the 2007-2012 Korean National Health and Nutrition Examination Survey and were followed up to year 2017 based on data linking to the Korean National Health Insurance Service and Korean Health Insurance Review and Assessment. Socio-economic factors included sex, age, residential area, education, occupation, marital status, disability, public and private health insurance, service through local public health organizations, history of cancer except for SC, and family history of SC. Medical factors included six gastric lesions with the possibility of facilitating SC screening, including benign gastric neoplasm, chronic atrophic gastritis, gastric polyp, Helicobacter pylori infection, intestinal metaplasia, and peptic ulcers. The outcome was adherence to SC screening, which was divided into non-adherence, irregular adherence, and regular adherence. RESULTS After adjusting for the effects of socio-economic factors, multivariate ordinal logistic regression revealed that participants with a history of four types of gastric lesions were more likely to regularly participate in SC screening: chronic atrophic gastritis (odds ratio [OR] 1.567; 95% confidence interval [CI] = 1.276-1.923), gastric polyps (OR 1.565; 95% CI = 1.223-2.003), H. pylori infection (OR 1.637; 95% CI = 1.338-2.003), and peptic ulcer (OR 2.226; 95% CI 1.750-2.831). CONCLUSIONS To improve participation in SC screening, it is necessary to implement personalized strategies for individuals at risk for gastric cancer in addition to population-based strategies for vulnerable groups.
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Affiliation(s)
- J-Y Kim
- Department of Biomedical Informatics, College of Medicine, Konyang University, Daejeon, South Korea; Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Konyang University, Daejeon, South Korea
| | - J Y Hong
- Department of Biomedical Informatics, College of Medicine, Konyang University, Daejeon, South Korea
| | - S M Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea.
| | - K H Ryu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - D S Kim
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - S H Lee
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - J H Na
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - H H Cho
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Konyang University College of Medicine, 158, Gwanjeodong-ro, Seo-gu, Daejeon, South Korea
| | - J Yu
- Medical Data Research group, Konyang University Hospital, Daejeon, South Korea
| | - J Lee
- Medical Data Research group, Konyang University Hospital, Daejeon, South Korea
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Kong LZ, Kim SM, Wang C, Lee SY, Oh SC, Lee S, Jo S, Kim TD. Understanding nucleic acid sensing and its therapeutic applications. Exp Mol Med 2023; 55:2320-2331. [PMID: 37945923 PMCID: PMC10689850 DOI: 10.1038/s12276-023-01118-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 08/16/2023] [Accepted: 08/20/2023] [Indexed: 11/12/2023] Open
Abstract
Nucleic acid sensing is involved in viral infections, immune response-related diseases, and therapeutics. Based on the composition of nucleic acids, nucleic acid sensors are defined as DNA or RNA sensors. Pathogen-associated nucleic acids are recognized by membrane-bound and intracellular receptors, known as pattern recognition receptors (PRRs), which induce innate immune-mediated antiviral responses. PRR activation is tightly regulated to eliminate infections and prevent abnormal or excessive immune responses. Nucleic acid sensing is an essential mechanism in tumor immunotherapy and gene therapies that target cancer and infectious diseases through genetically engineered immune cells or therapeutic nucleic acids. Nucleic acid sensing supports immune cells in priming desirable immune responses during tumor treatment. Recent studies have shown that nucleic acid sensing affects the efficiency of gene therapy by inhibiting translation. Suppression of innate immunity induced by nucleic acid sensing through small-molecule inhibitors, virus-derived proteins, and chemical modifications offers a potential therapeutic strategy. Herein, we review the mechanisms and regulation of nucleic acid sensing, specifically covering recent advances. Furthermore, we summarize and discuss recent research progress regarding the different effects of nucleic acid sensing on therapeutic efficacy. This study provides insights for the application of nucleic acid sensing in therapy.
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Affiliation(s)
- Ling-Zu Kong
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
- Department of Biochemistry, College of Natural Sciences, Chungnam National University, Daejeon, 34134, Republic of Korea
| | - Seok-Min Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Chunli Wang
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Soo Yun Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Se-Chan Oh
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
| | - Sunyoung Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
- Department of Life Sciences, Korea University, Seoul, 02841, Korea
| | - Seona Jo
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea
- Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, 34113, Korea
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141, Republic of Korea.
- Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, 34113, Korea.
- Biomedical Mathematics Group, Institute for Basic Science (IBS), Daejeon, Republic of Korea.
- Department of Biopharmaceutical Convergence, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea.
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Pyo JH, Lee SY, Lee IJ, Kim SM, Kim JW. Beneficial Role of Multi-Disciplinary Treatment for Anaplastic Thyroid Cancer with Initial Distant Metastasis. Int J Radiat Oncol Biol Phys 2023; 117:e616-e617. [PMID: 37785850 DOI: 10.1016/j.ijrobp.2023.06.1996] [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: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Anaplastic thyroid cancer (ATC) is a rare, highly aggressive tumor, with median survival around 5 months. Approximately half of the ATC patients presents with distant metastases at diagnosis, showing even more devastating prognosis, yet no outcome analysis had been reported. In this study, we aim to evaluate the clinical outcome of M1 ATC patients, and to define the group of patients who would benefit from local treatment based on multi-disciplinary approach. MATERIALS/METHODS A total of 133 histology-confirmed ATC patients underwent protocol-based multidisciplinary treatment including surgery and chemoradiotherapy (CRT) between May 2016 and January 2022. Patients received intensity-modulated radiotherapy of 30 fractions concurrently with paclitaxel on days 1, 8 and 15 every 4 weeks, and lenvatinib was added upon progression. After 18 fractions of CRT, interim response analysis using modified RECIST was conducted for adaptive treatment planning. We reviewed 58 patients with distant metastasis at diagnosis (stage IVC). Overall survival (OS) and progression-free survival (PFS) were measured from the day of diagnosis. RESULTS Most common metastatic site was lung (91.4%), followed by bone (31.0%) and brain (5.2%). Lenvatinib was added for 35 patients after any sign of progression. Fourteen patients received upfront surgery (16 debulking and 5 total) followed by adjuvant CRT in 16 patients. Thirty-one patients received upfront CRT with 2 patients receiving total resection after sufficient down-staging. Six (10%) patients could not complete radiotherapy but continued receiving systemic treatment. The median follow-up was 5.9 months. The median and 1-year OS were 6.2 months and 20.5%, and PFS were 3.7 months and 3.5%. Total RT dose over 60 Gy significantly improved median OS (7.5 vs 4.1 months, p = 0.012) and median PFS (4.4 vs 3.0, p = 0.010). Patients with less than 10 initial metastatic tumors showed better median OS (9.1 vs 4.6 months, p = 0.002) but not PFS (5.1 vs 3.6, p = 0.485). At interim analysis, early response (CR, PR and SD) of primary tumor was not associated with survival, while progression of distant metastases showed significantly worse median OS (9.8 vs 4.6 months, p = 0.001). More than 10 metastatic tumors (HR 2.73, 95% CI 1.32-5.66) and stable metastasis at interim analysis (HR 2.39, 95% CI 1.04-5.48) remained as significant factor in the multivariable cox regression analysis. Median OS and PFS of patients with less than 10 metastases showing no progression at interim analysis were 9.1 months, and 5.1 months. CONCLUSION Local treatment combined with chemotherapy for M1 ATC patients showed outcome comparable to those of non-metastatic ATC results. Active local treatment should be considered especially for patients with less than 10 metastases, and patients without distant progression in early response evaluation.
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Affiliation(s)
- J H Pyo
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S Y Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - I J Lee
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - S M Kim
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
| | - J W Kim
- Department of Radiation Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea, Republic of (South) Korea
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Kim D, Jo S, Lee D, Kim SM, Seok JM, Yeo SJ, Lee JH, Lee JJ, Lee K, Kim TD, Park SA. NK cells encapsulated in micro/macropore-forming hydrogels via 3D bioprinting for tumor immunotherapy. Biomater Res 2023; 27:60. [PMID: 37349810 DOI: 10.1186/s40824-023-00403-9] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 06/01/2023] [Indexed: 06/24/2023] Open
Abstract
BACKGROUND Patients face a serious threat if a solid tumor leaves behind partial residuals or cannot be completely removed after surgical resection. Immunotherapy has attracted attention as a method to prevent this condition. However, the conventional immunotherapy method targeting solid tumors, that is, intravenous injection, has limitations in homing in on the tumor and in vivo expansion and has not shown effective clinical results. METHOD To overcome these limitations, NK cells (Natural killer cells) were encapsulated in micro/macropore-forming hydrogels using 3D bioprinting to target solid tumors. Sodium alginate and gelatin were used to prepare micro-macroporous hydrogels. The gelatin contained in the alginate hydrogel was removed because of the thermal sensitivity of the gelatin, which can generate interconnected micropores where the gelatin was released. Therefore, macropores can be formed through bioprinting and micropores can be formed using thermally sensitive gelatin to make macroporous hydrogels. RESULTS It was confirmed that intentionally formed micropores could help NK cells to aggregate easily, which enhances cell viability, lysis activity, and cytokine release. Macropores can be formed using 3D bioprinting, which enables NK cells to receive the essential elements. We also characterized the functionality of NK 92 and zEGFR-CAR-NK cells in the pore-forming hydrogel. The antitumor effects on leukemia and solid tumors were investigated using an in vitro model. CONCLUSION We demonstrated that the hydrogel encapsulating NK cells created an appropriate micro-macro environment for clinical applications of NK cell therapy for both leukemia and solid tumors via 3D bioprinting. 3D bioprinting makes macro-scale clinical applications possible, and the automatic process shows potential for development as an off-the-shelf immunotherapy product. This immunotherapy system could provide a clinical option for preventing tumor relapse and metastasis after tumor resection. Micro/macropore-forming hydrogel with NK cells fabricated by 3D bioprinting and implanted into the tumor site.
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Affiliation(s)
- Dahong Kim
- Nano Convergence & Manufacturing Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 34103, Republic of Korea
- Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seona Jo
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
- Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Dongjin Lee
- Nano Convergence & Manufacturing Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 34103, Republic of Korea
| | - Seok-Min Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea
- Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, 34113, Republic of Korea
| | - Ji Min Seok
- Nano Convergence & Manufacturing Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 34103, Republic of Korea
- Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
| | - Seon Ju Yeo
- Nano Convergence & Manufacturing Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 34103, Republic of Korea
| | - Jun Hee Lee
- Nano Convergence & Manufacturing Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 34103, Republic of Korea
| | - Jae Jong Lee
- Nano Convergence & Manufacturing Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 34103, Republic of Korea
| | - Kangwon Lee
- Department of Applied Bioengineering, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, 08826, Republic of Korea
- Research Institute for Convergence Science, Seoul National University, Seoul, 08826, Republic of Korea
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 34141, Republic of Korea.
- Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, 34113, Republic of Korea.
- Biomedical Mathematics Group, Institute for Basic Science, Daejeon, 34126, Republic of Korea.
- Department of Biopharmaceutical Convergence, School of Pharmacy, Sungkyunkwan University, Suwon, 16419, Republic of Korea.
| | - Su A Park
- Nano Convergence & Manufacturing Systems, Korea Institute of Machinery and Materials (KIMM), Daejeon, 34103, Republic of Korea.
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Choi SK, Chung HS, Ko HS, Gen Y, Kim SM, Shin JE, Kil KC, Kim YH, Wie JH, Jo YS. Hemorrhagic morbidity in nulliparous patients with placenta previa without placenta accrete spectrum disorders. Niger J Clin Pract 2023; 26:432-437. [PMID: 37203107 DOI: 10.4103/njcp.njcp_456_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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Background Placental adhesion spectrum (PAS) is a disease in which the trophoblast invades the myometrium, and is a well-known high-risk condition associated with placental previa. Aim The morbidity of nulliparous women with placenta previa without PAS disorders is unknown. Patients and Methods The data from nulliparous women who underwent cesarean delivery were collected retrospectively. The women were dichotomized into malpresentation (MP) and placenta previa groups. The placenta previa group was categorized into previa (PS) and low-lying (LL) groups. When the placenta covers the internal cervical os, it is called placenta previa, when the placenta is near the cervical os, it is called the low-lying placenta. Their maternal hemorrhagic morbidity and neonatal outcomes were analyzed and adjusted using multivariate analysis based on univariate analysis. Results A total of 1269 women were enrolled: 781 women in the MP group and 488 women in the PP-LL group. Regarding packed red blood cell transfusion, PP and LL had adjusted odds ratio (aOR) of 14.7 (95% confidence interval (CI): 6.6 - 32.5), and 11.3 (95% CI: 4.9 - 26) during admission, and 51.2 (95% CI: 22.1 - 122.7) and 10.3 (95% CI: 3.9 - 26.6) during operation, respectively. For intensive care unit admission, PS and LL had aOR of 15.9 (95% CI: 6.5 - 39.1) and 3.5 (95% CI: 1.1 - 10.9), respectively. No women had cesarean hysterectomy, major surgical complications, or maternal death. Conclusion Despite placenta previa without PAS disorders, maternal hemorrhagic morbidity was significantly increased. Thus, our results highlight the need for resources for those women with evidence of placenta previa including a low-lying placenta, even if those women do not meet PAS disorder criteria. In addition, placenta previa without PAS disorder was not associated with critical maternal complications.
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Affiliation(s)
- S K Choi
- Department of Obstetrics and Gynaecology, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H S Chung
- Department of Anaesthesiology and Pain Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - H S Ko
- Department of Obstetrics and Gynaecology, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y Gen
- Department of Obstetrics and Gynaecology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S M Kim
- Department of Obstetrics and Gynaecology, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J E Shin
- Department of Obstetrics and Gynaecology, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - K C Kil
- Department of Obstetrics and Gynaecology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y H Kim
- Department of Obstetrics and Gynaecology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - J H Wie
- Department of Obstetrics and Gynaecology, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y S Jo
- Department of Obstetrics and Gynaecology, St. Vincent's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Oh SC, Kim SE, Jang IH, Kim SM, Lee SY, Lee S, Chu IS, Yoon SR, Jung H, Choi I, Doh J, Kim TD. NgR1 is an NK cell inhibitory receptor that destabilizes the immunological synapse. Nat Immunol 2023; 24:463-473. [PMID: 36624164 DOI: 10.1038/s41590-022-01394-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 11/22/2022] [Indexed: 01/10/2023]
Abstract
The formation of an immunological synapse (IS) is essential for natural killer (NK) cells to eliminate target cells. Despite an advanced understanding of the characteristics of the IS and its formation processes, the mechanisms that regulate its stability via the cytoskeleton are unclear. Here, we show that Nogo receptor 1 (NgR1) has an important function in modulating NK cell-mediated killing by destabilization of IS formation. NgR1 deficiency or blockade resulted in improved tumor control of NK cells by enhancing NK-to-target cell contact stability and regulating F-actin dynamics during IS formation. Patients with tumors expressing abundant NgR1 ligand had poor prognosis despite high levels of NK cell infiltration. Thus, our study identifies NgR1 as an immune checkpoint in IS formation and indicates a potential approach to improve the cytolytic function of NK cells in cancer immunotherapy.
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Affiliation(s)
- Se-Chan Oh
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Seong-Eun Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology, Pohang, Republic of Korea
| | - In-Hwan Jang
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Seok-Min Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Soo Yun Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Sunyoung Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Life Sciences, Korea University, Seoul, Republic of Korea
| | - In-Sun Chu
- Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Bioinformatics, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Suk Ran Yoon
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Haiyoung Jung
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea.,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea
| | - Inpyo Choi
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Junsang Doh
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Institute of Engineering Research, Bio-MAX Institute, Soft Foundry Institute, Seoul National University, Seoul, Republic of Korea.
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea. .,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology, Daejeon, Republic of Korea. .,Biomedical Mathematics Group, Institute for Basic Science, Daejeon, Republic of Korea. .,Department of Biopharmaceutical Convergence, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea.
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8
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Kang HY, Lee SY, Kim HM, Lee SU, Lee H, Cho MY, Oh SC, Kim SM, Park HS, Han EH, Kim SE, Kim H, Yoon SR, Doh J, Chung J, Hong KS, Choi I, Kim TD. A modifiable universal cotinine-chimeric antigen system of NK cells with multiple targets. Front Immunol 2023; 13:1089369. [PMID: 36713381 PMCID: PMC9880444 DOI: 10.3389/fimmu.2022.1089369] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/19/2022] [Indexed: 01/15/2023] Open
Abstract
Natural killer (NK) cells are immune effector cells with outstanding features for adoptive immunotherapy. Immune effector cells with chimeric antigen receptors (CARs) are promising targeted therapeutic agents for various diseases. Because tumor cells exhibit heterogeneous antigen expression and lose cell surface antigen expression during malignant progression, many CARs fixed against only one antigen have limited efficacy and are associated with tumor relapse. To expand the utility of CAR-NK cells, we designed a split and universal cotinine-CAR (Cot-CAR) system, comprising a Cot-conjugator and NK92 cells (α-Cot-NK92 cells) engineered with a CAR containing an anti-Cot-specific single-chain variable fragment and intracellular signaling domain. The efficacy of the Cot-CAR system was assessed in vitro using a cytolysis assay against various tumor cells, and its single- or multiple- utility potential was demonstrated using an in vivo lung metastasis model by injecting A549-Red-Fluc cells. The α-Cot-NK92 cells could switch targets, logically respond to multiple antigens, and tune cytolytic activation through the alteration of conjugators without re-engineering. Therefore the universal Cot-CAR system is useful for enhancing specificity and diversity of antigens, combating relapse, and controlling cytolytic activity. In conclusion, this universal Cot-CAR system reveals that multiple availability and controllability can be generated with a single, integrated system.
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Affiliation(s)
- Hee Young Kang
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea
| | - Soo Yun Lee
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea
| | - Hyun Min Kim
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju-si, Chungcheonbuk-do, Republic of Korea
| | - Su Ui Lee
- Natural Medicine Research Center, KRIBB, Chungcheongbuk-do, Republic of Korea
| | - Hyunseung Lee
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju-si, Chungcheonbuk-do, Republic of Korea
| | - Mi Young Cho
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju-si, Chungcheonbuk-do, Republic of Korea
| | - Se-Chan Oh
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Seok-Min Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Hye Sun Park
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju-si, Chungcheonbuk-do, Republic of Korea
| | - Eun Hee Han
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju-si, Chungcheonbuk-do, Republic of Korea
| | - Seong-Eun Kim
- Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Gyeongbuk, Republic of Korea
| | - Hyori Kim
- Convergence Medicine Research Center, Asan Medical Center, Seoul, Republic of Korea
| | - Suk Ran Yoon
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea
| | - Junsang Doh
- Department of Materials Science and Engineering, Research Institute of Advanced Materials (RIAM), Institute of Engineering Research, Bio-MAX institute, Seoul National University, Seoul, Republic of Korea
| | - Junho Chung
- Department of Biochemistry and Molecular Biology, Cancer Research Institute, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Kwan Soo Hong
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju-si, Chungcheonbuk-do, Republic of Korea,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea,*Correspondence: Tae-Don Kim, ; Inpyo Choi, ; Kwan Soo Hong,
| | - Inpyo Choi
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea,*Correspondence: Tae-Don Kim, ; Inpyo Choi, ; Kwan Soo Hong,
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Yuseong-gu, Daejeon, Republic of Korea,Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Republic of Korea,Biomedical Mathematics Group, Institute for Basic Science (IBS), Daejeon, Republic of Korea,Department of Biopharmaceutical Convergence, School of Pharmacy, Sungkyunkwan University, Suwon, Republic of Korea,*Correspondence: Tae-Don Kim, ; Inpyo Choi, ; Kwan Soo Hong,
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9
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Lee YH, Kim SM, Kim EK, Park SJ, Lee SC, Park SW, Jeong DS, Chang SA. Pattern of pericardial calcification determines the mid-term postoperative outcome after pericardiectomy in chronic constrictive pericarditis. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1797] [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: 11/15/2022] Open
Abstract
Abstract
Background/Introduction
Although pericardiectomy is an effective treatment of constrictive pericarditis (CP), clinical outcome is not always successful. Pericardial calcification is a unique finding in CP. However, the amount and localization of calcification vary. Computer tomography (CT) can visualize the pericardial calcification with high sensitivity and provide the anatomical assessment.
Purpose
We investigated that how the pattern and amount of pericardial calcification affect the mid-term postoperative outcome after pericardiectomy in CP.
Methods
All of the patients who underwent total pericardiectomy in our hospital from 2010 to 2020 were derived from electrical medical records (n=105). Among them, preoperative CT scans (non-gated non-contrast) of 98 patients were available and, thus, 98 consecutive patients were finally analyzed. Medical records were reviewed in a retrospective manner. Cardiovascular event is defined as cardiovascular death or hospitalization associated with a heart failure symptom and all cause event is defined as all events that require admission. CT scan was analyzed by Aquarius Workstation, and the volume and localization pattern of pericalcification were derived. Pericardium calcium score was given as an Agatston score.
Results
Of 98 patients, 25 (25.5%) patients were hospitalized with heart failure symptom after pericardiectomy. Median follow up duration of patients is 172 weeks. A group with cardiovascular event had higher NYHA grade (P<0.001), lower calcium volume (P=0.004), and lower calcium score (P=0.01). Multivariate cox proportional analysis showed that high ln(calcium score) before pericardiectomy was dependent predictor of cardiovascular event (hazard ratio, 0.90; P=0.04) and all cause event (hazard ratio, 0.91, P=0.04) after pericardiectomy. When we set the cut off value at 7.22, based on ROC curve, there was a significant difference in cardiovascular event between the groups divided by this cutoff value in Kaplan-Meier curve (P=0.002) and multivariate cox proportional analysis (P=0.04). In the subgroup analysis, myocardium invasion and circumferential calcification were more common in the high calcium score group. Idiopathic & tuberculosis pericarditis were more associated with high calcium score group and post-operative pericarditis, other reasons (infection, radiation, etc) were more associated with low calcium group.
Conclusion
Low burden of pericardial calcification was associated high rate of mid-term clinical event after pericardiectomy CP. Preoperative evaluation of pericardial calcification pattern can be used as predictor of postoperative outcomes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y H Lee
- Sungkyunkwan University School of Medicine , Seoul , Korea (Republic of)
| | - S M Kim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Department of Radiology , Seoul , Korea (Republic of)
| | - E K Kim
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Division of Cardiology, Department of Internal Medicine , Seoul , Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Division of Cardiology, Department of Internal Medicine , Seoul , Korea (Republic of)
| | - S C Lee
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Division of Cardiology, Department of Internal Medicine , Seoul , Korea (Republic of)
| | - S W Park
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Division of Cardiology, Department of Internal Medicine , Seoul , Korea (Republic of)
| | - D S Jeong
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Department of Thoracic and Cardiovascular Surgery , Seoul , Korea (Republic of)
| | - S A Chang
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Division of Cardiology, Department of Internal Medicine , Seoul , Korea (Republic of)
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Bak M, Choi KH, Kim JH, Park TK, Kim EK, Kim SM, Choi SH, Park SJ. Risk factors and clinical effects of late leaflet thrombosis after transcatheter aortic valve replacement. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1569] [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
As the indications for trans-catheter aortic valve replacement (TAVR) expand, it is expected that the number of TAVR patients would increase and the follow-up duration would be longer. It is known that the incidence of leaflet thrombosis is higher in TAVR than in surgical aortic valve replacement (SAVR), but not much is known about the risk factors of late leaflet thrombosis in TAVR.
Aim
Therefore, in this study, the incidence and risk factors of late leaflet thrombosis at late term after TAVR and the effect on clinical course of late leaflet thrombosis would be investigated.
Method
There were 176 patients undergone TAVR from January 2015 to October 2020 in one tertiary hospital of south korea. 94 patients had follow-up cardiovascular computed tomography (CT) between 3 months and 2 years after TAVR. Among 94 patients, late leaflet thrombosis was discovered at 20 patients, and risk factors were analyzed by comparing clinical factors, echocardiographic and cardiovascular CT information, and angiographic data between the group with and without late leaflet thrombosis. And the difference in aortic valve hemodynamics between the group with and without leaflet thrombosis was examined and clinical outcomes were compared. Clinical outcome was defined as the composite of all-cause death, stroke, heart failure (HF) admission, redo-aortic valve (AV) replacement and major bleeding after detection of late leaflet thrombosis.
Results
Indexed mean sinus of Valsalva diameter, AV calcium score and post procedure estimated orifice area (EOA) had predictability of late leaflet thrombosis with AUC value of 0.670 (95% CI [0.546–0.795], p value = 0.020), AUC value of 0.698 (95% CI [0.544–0.851], p value = 0.012) and AUC value of 0.665 (95 percent CI [0.548–0.782], p value = 0.031), respectively (Figure 1).
In echocardiography performed at the time of follow-up CT, AV max velocity and AV mean pressure gradient were higher in thrombosis group and EOA and Doppler velocity index were lower in thrombosis group than in no thrombosis group within normal range (Figure 2). Clinical outcome was not significant different between the two groups (log rank p value = 0.560).
Conclusion
Larger indexed sinus of Valsalva diameter, higher AV calcium score and smaller post procedure AV EOA were risk factors for late leaflet thrombosis after TAVR. Subclinical late leaflet thrombosis have a benign course when properly managed.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- M Bak
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - K H Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - J H Kim
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - T K Park
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - E K Kim
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - S M Kim
- Samsung Medical Center, Department of Radiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
| | - S H Choi
- Samsung Medical Center , Seoul , Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Division of Cardiology, Cardiovascular Imaging Center, Heart Vascular Stroke Institute , Seoul , Korea (Republic of)
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11
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Kim H, Lee YS, Kim SM, Jang S, Choi H, Lee JW, Kim TD, Kim VN. RNA demethylation by FTO stabilizes the FOXJ1 mRNA for proper motile ciliogenesis. Dev Cell 2021; 56:1118-1130.e6. [PMID: 33761320 DOI: 10.1016/j.devcel.2021.03.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 01/22/2020] [Revised: 12/10/2020] [Accepted: 02/27/2021] [Indexed: 12/29/2022]
Abstract
Adenosine N6-methylation (m6A) is one of the most pervasive mRNA modifications, and yet the physiological significance of m6A removal (demethylation) remains elusive. Here, we report that the m6A demethylase FTO functions as a conserved regulator of motile ciliogenesis. Mechanistically, FTO demethylates and thereby stabilizes the mRNA that encodes the master ciliary transcription factor FOXJ1. Depletion of Fto in Xenopus laevis embryos caused widespread motile cilia defects, and Foxj1 was identified as one of the major phenocritical targets. In primary human airway epithelium, FTO depletion also led to FOXJ1 mRNA destabilization and a severe loss of ciliated cells with an increase of neighboring goblet cells. Consistently, Fto knockout mice showed strong asthma-like phenotypes upon allergen challenge, a result owing to defective ciliated cells in the airway epithelium. Altogether, our study reveals a conserved role of the FTO-FOXJ1 axis in embryonic and homeostatic motile ciliogenesis.
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Affiliation(s)
- Hyunjoon Kim
- Center for RNA Research, Institute for Basic Science, Seoul 08826, Korea; School of the Biological Sciences, Seoul National University, Seoul 08826, Korea.
| | - Young-Suk Lee
- Center for RNA Research, Institute for Basic Science, Seoul 08826, Korea; School of the Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Seok-Min Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Soohyun Jang
- Center for RNA Research, Institute for Basic Science, Seoul 08826, Korea
| | - Hyunji Choi
- School of the Biological Sciences, Seoul National University, Seoul 08826, Korea
| | - Jae-Won Lee
- Natural Medicine Research Center, KRIBB, Cheongju, Korea
| | - Tae-Don Kim
- Immunotherapy Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea.
| | - V Narry Kim
- Center for RNA Research, Institute for Basic Science, Seoul 08826, Korea; School of the Biological Sciences, Seoul National University, Seoul 08826, Korea.
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12
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Lu X, Lee S, Kim J, Abbas N, Badshah MA, Kim SM. Fabrication of Ag nanorods on micropost array for a metal-enhanced fluorescence substrate with a high signal-to-background ratio. Biosens Bioelectron 2021; 175:112881. [PMID: 33308961 DOI: 10.1016/j.bios.2020.112881] [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: 07/30/2020] [Revised: 11/17/2020] [Accepted: 12/01/2020] [Indexed: 11/29/2022]
Abstract
Selective fabrication of metallic nanostructures at the spotting area is required to increase the signal-to-background noise ratio (SBR) of the metal-enhanced fluorescence (MEF) substrate. As a simple and cost-effective fabrication method for MEF substrate with high SBR, a glancing angle deposition (GLAD) process of Ag material on the UV-imprinted micropost array (50 μm in height, 300 μm in diameter, and 600 μm in pitch) was proposed to selectively fabricate Ag nanorods on the top of micropost structure (spotting area). Ag nanorod formation at the bottom of the micropost decreased as the deposition angle in Ag GLAD increased. A deposition angle of 89° and deposition thickness of 500 nm were selected as the optimum GLAD conditions to maximize the SBR. The optimum Ag nanorods on micropost array (AgNMPA) MEF substrate provided 71-fold fluorescence signal enhancement and 25-times higher SBR than the bare glass substrate. It also provided 7-times higher SBR than the Ag nanorod MEF substrate, which has a similar Ag nanorod structure but is not selectively formed. The detection limit of AgNMPA was 16- and 4-times lower than that of the amine-functionalized glass substrate and commercial epoxy slide, respectively. Although the fluorescence signal of AgNMPA was similar to that of Ag nanorod substrate, the detection limit was 2-times lower because of the low signal standard deviation caused by the low background noise and clear spot shape.
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Affiliation(s)
- Xun Lu
- Department of Mechanical Engineering, Yanbian University, Yanji, 133002, China; Department of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Seongmin Lee
- Department of Mechanical System Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Jun Kim
- Department of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Naseem Abbas
- Department of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Mohsin Ali Badshah
- Department of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea
| | - Seok-Min Kim
- Department of Mechanical System Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea; Department of Mechanical Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea; Department of Computer Science and Engineering, Chung-Ang University, Seoul, 06974, Republic of Korea.
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13
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Yun JM, Choi S, Kim K, Kim SM, Son JS, Lee G, Jeong SM, Park SY, Kim YY, Park SM. All-cause mortality, cardiovascular mortality, and incidence of cardiovascular disease according to a screening program of cardiovascular risk in South Korea among young adults: a nationwide cohort study. Public Health 2020; 190:23-29. [PMID: 33338899 DOI: 10.1016/j.puhe.2020.10.023] [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: 02/19/2020] [Revised: 08/03/2020] [Accepted: 10/29/2020] [Indexed: 11/17/2022]
Abstract
OBJECTIVES We aimed to determine whether there are any differences in all-cause and cause-specific mortality with cardiovascular disease (CVD) risk between health screening attenders and non-attenders among young adults. STUDY DESIGN We performed a retrospective cohort study using claim data from the Korean National Health Insurance Service database. METHODS Individuals aged 20-39 years who had received health screening at least once between 2002 and 2005 were classified as attenders, and the others were classified as non-attenders. After propensity score matching according to attendance of health screening, 2,060,409 attenders and 2,060,409 non-attenders were included. We estimated adjusted hazard ratios (HRs) and 95% confidence interval (CI) for all-cause mortality, cause-specific mortality, and hospitalization of CVD from 2006 to 2015. RESULTS Survival from all-cause mortality was greater among attenders than among non-attenders (log rank P < 0.001). Similarly, death from CVD (log rank P = 0.007) and CVD events (log rank P < 0.001) were less likely among attenders. The risk for all-cause mortality in attenders was significantly lower than that in non-attenders (HR = 0.83, 95% CI = 0.81 to 0.84). The risk for CVD mortality (HR = 0.80, 95% CI = 0.73 to 0.87) and hospitalization of CVD (HR = 0.92, 95% CI = 0.91 to 0.94) were lower in attenders. In stratified analyses, the risk for all-cause and cause-specific mortalities was lower among attenders regardless of insurance type. CONCLUSIONS Among young adults, the risk for all-cause mortality, CVD mortality, and hospitalization of CVD were lower for those who underwent health screenings. Future studies that evaluate the cost-effectiveness of health screening with additional consideration of psychosocial aspects are needed.
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Affiliation(s)
- J M Yun
- Department of Family Medicine, Seoul National University Hospital, Seoul, South Korea
| | - S Choi
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - K Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - S M Kim
- Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - J S Son
- Department of Family Medicine, Seoul National University Hospital, Seoul, South Korea
| | - G Lee
- Department of Family Medicine, Seoul National University Hospital, Seoul, South Korea
| | - S-M Jeong
- Department of Family Medicine, Seoul National University Hospital, Seoul, South Korea
| | - S Y Park
- Big Data Steering Department, National Health Insurance Service, Wonju, South Korea
| | - Y-Y Kim
- Big Data Steering Department, National Health Insurance Service, Wonju, South Korea
| | - S M Park
- Department of Family Medicine, Seoul National University Hospital, Seoul, South Korea; Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea.
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Jang J, Yeom JW, Kang WK, Haq MR, Lu X, Shin D, Kim SM, In JB. Laser Pyrolysis of Imprinted Furan Pattern for the Precise Fabrication of Microsupercapacitor Electrodes. Micromachines (Basel) 2020; 11:mi11080746. [PMID: 32751742 PMCID: PMC7464924 DOI: 10.3390/mi11080746] [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] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 07/27/2020] [Accepted: 07/29/2020] [Indexed: 02/04/2023]
Abstract
The design or dimension of micro-supercapacitor electrodes is an important factor that determines their performance. In this study, a microsupercapacitor was precisely fabricated on a silicon substrate by irradiating an imprinted furan micropattern with a CO2 laser beam under ambient conditions. Since furan is a carbon-abundant polymer, electrically conductive and porous carbon structures were produced by laser-induced pyrolysis. While the pyrolysis of a furan film in a general electric furnace resulted in severe cracks and delamination, the laser pyrolysis method proposed herein yielded porous carbon films without cracks or delamination. Moreover, as the imprinting process already designated the furan area for laser pyrolysis, high-precision patterning was achieved in the subsequent laser pyrolysis step. This two-step process exploited the superior resolution of imprinting for the fabrication of a laser-pyrolyzed carbon micropattern. As a result, the technical limitations of conventional laser direct writing could be overcome. The laser-pyrolyzed carbon structure was employed for microsupercapacitor electrodes. The microsupercapacitor showed a specific capacitance of 0.92 mF/cm2 at 1 mA/cm2 with a PVA-H2SO4 gel electrolyte, and retained an up to 88% capacitance after 10,000 charging/discharging cycles.
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Affiliation(s)
- Jina Jang
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Jeong Woo Yeom
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Won Kyu Kang
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Muhammad Refatul Haq
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Xun Lu
- Department of Mechanical Engineering, Yanbian University, Yanji 133002, China;
| | - Dongjun Shin
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
| | - Seok-Min Kim
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
- Correspondence: (S.-M.K.); (J.B.I.); Tel.: +82-2-820-5877 (S.-M.K.); +82-2-820-5971 (J.B.I.)
| | - Jung Bin In
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea; (J.J.); (J.W.Y.); (W.K.K.); (M.R.H.); (D.S.)
- Correspondence: (S.-M.K.); (J.B.I.); Tel.: +82-2-820-5877 (S.-M.K.); +82-2-820-5971 (J.B.I.)
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15
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Choi SJ, Kwak DW, Kil K, Kim SC, Kwon JY, Kim YH, Na S, Bae JG, Cha HH, Shim JY, Oh KY, Lee KA, Kim SM, Cho IA, Lee SM, Cho GJ, Jo YS, Choi GY, Choi SK, Hur SE, Hwang HS, Kim YJ. Vaginal compared with intramuscular progestogen for preventing preterm birth in high-risk pregnant women (VICTORIA study): a multicentre, open-label randomised trial and meta-analysis. BJOG 2020; 127:1646-1654. [PMID: 32536019 DOI: 10.1111/1471-0528.16365] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To compare the efficacy of two types of progestogen therapy for preventing preterm birth (PTB) and to review the relevant literature. DESIGN A multicentre, randomised, open-label, equivalence trial and a meta-analysis. SETTING Tertiary referral hospitals in South Korea. POPULATION Pregnant women with a history of spontaneous PTB or short cervical length (<25 mm). METHODS Eligible women were screened and randomised at 16-22 weeks of gestation to receive either 200 mg of vaginal micronised progesterone daily (vaginal group) or an intramuscular injection of 250 mg 17α-hydroxyprogesterone caproate weekly (IM group). Stratified randomisation was carried out according to participating centres and indications for progestogen therapy. This trial was registered at ClinicalTrials.gov (NCT02304237). MAIN OUTCOME MEASURE Preterm birth (PTB) before 37 weeks of gestation. RESULTS A total of 266 women were randomly assigned and a total of 247 women (119 and 128 women in the vaginal and IM groups, respectively) were available for the intention-to-treat analysis. Risks of PTB before 37 weeks of gestation did not significantly differ between the two groups (22.7 versus 25.8%, P = 0.571). The difference in PTB risk between the two groups was 3.1% (95% CI -7.6 to 13.8%), which was within the equivalence margin of 15%. The meta-analysis results showed no significant differences in the risk of PTB between the vaginal and IM progestogen treatments. CONCLUSION Compared with vaginal progesterone, treatment with intramuscular progestin might increase the risk of PTB before 37 weeks of gestation by as much as 13.8%, or reduce the risk by as much as 7.6%, in women with a history of spontaneous PTB or with short cervical length. TWEETABLE ABSTRACT Vaginal and intramuscular progestogen showed equivalent efficacy for preventing preterm birth before 37 weeks of gestation.
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Affiliation(s)
- S-J Choi
- Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - D W Kwak
- Ajou University School of Medicine, Suwon, Korea
| | - K Kil
- Yeouido St Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - S-C Kim
- Pusan National University College of Medicine, Pusan, Korea
| | - J-Y Kwon
- Institute of Women's Life Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Y H Kim
- Chonnam National University Medical School, Gwangju, Korea
| | - S Na
- Kangwon National University Hospital, School of Medicine Kangwon National University, Chuncheon, Korea
| | - J-G Bae
- Keimyung University School of Medicine, Daegu, Korea
| | - H-H Cha
- Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
| | - J-Y Shim
- Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - K Y Oh
- School of Medicine, Eulji University, Daejeon, Korea
| | - K A Lee
- Kyung Hee University School of Medicine, Seoul, Korea
| | - S M Kim
- Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - I A Cho
- Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea
| | - S M Lee
- Seoul National University College of Medicine, Seoul, Korea
| | - G J Cho
- Korea University College of Medicine, Seoul, Korea
| | - Y S Jo
- St Vincent's Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - G Y Choi
- Soonchunhyang University Seoul Hospital, College of Medicine, Soonchunhyang University, Seoul, Korea
| | - S K Choi
- College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - S E Hur
- Konyang University Hospital, Daejeon, Korea
| | - H S Hwang
- Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea
| | - Y J Kim
- College of Medicine, Ewha Womans University, Seoul, Korea
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Chae YS, Lee JY, Lee JW, Park JY, Kim SM, Lee JH. Survival of oral mucosal melanoma according to treatment, tumour resection margin, and metastases. Br J Oral Maxillofac Surg 2020; 58:1097-1102. [PMID: 32586691 DOI: 10.1016/j.bjoms.2020.05.028] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 05/20/2020] [Indexed: 12/13/2022]
Abstract
Because of the poor prognosis and of oral mucosal melanoma, and patients' short survival, large, randomised, clinical studies are difficult. We have investigated its demographic characteristics and analysed the effect of treatment, resection margins, and metastases on survival. We recorded age, sex, site of primary tumour, and types of treatment, survival, and metastases in 74 patients treated at the Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital. Survival was analysed based on bony invasion, depth of invasion, and resection margins, and we found that it varied depending on the primary site (p=0.002), and declined with liver (p=0.001) or brain (p=0.033) metastases. The two-year survival according to the primary site was as follows: palate 85% (n=32), anterior maxillary gingiva 53% (n=13), mandible 58% (n=13), and posterior maxillary gingival 74% (n=10) and buccal mucosa 50% (n=4). The two-year survival was 34% (n=8) in patients with liver metastases and 23% (n=7) in patients with brain metastases. In cases of bony invasion (p=0.005), depth of invasion (p=0.042), unclear resection margin (p=0.023), or higher T stages (p=0.009), the survival declined considerably. Neck dissection did not affect survival (p=0.343). Survival of the patients given chemotherapy was significantly lower (p=0.013) and the two-year survival was 54.0%. The patients given radiotherapy showed no significant difference in survival compared with those not given radiotherapy (p=0.107). In conclusion, primary site, bony invasion, resection margins, depth of invasion and systemic metastases were critical to predict prognosis and selection of treatment of oral mucosal melanoma.
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Affiliation(s)
- Y-S Chae
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul, Republic of Korea; Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - J-Y Lee
- Dental Research Institute, Seoul National University, Seoul, Republic of Korea
| | - J-W Lee
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Kyung Hee University, Seoul, Republic of Korea
| | - J-Y Park
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - S M Kim
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul, Republic of Korea; Dental Research Institute, Seoul National University, Seoul, Republic of Korea; Clinical Trial Center and Oral Cancer Center, Seoul National University Dental Hospital, Seoul, Republic of Korea
| | - J-H Lee
- Department of Oral and Maxillofacial Surgery, Seoul National University Dental Hospital, Seoul, Republic of Korea; Dental Research Institute, Seoul National University, Seoul, Republic of Korea; Clinical Trial Center and Oral Cancer Center, Seoul National University Dental Hospital, Seoul, Republic of Korea.
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17
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Kim HY, Choi JH, Kim KH, Kim SM. 1175 Comparison of fractional myocardial mass, a vessel-specific myocardial mass-at-risk, with coronary angiographic scoring systems for predicting myocardial ischemia. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.674] [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
Aims The burden of coronary artery disease has been assessed by various semi-quantitative angiographic scores, which are frequently different each other. A non-invasive and quantitative modality may substitute angiographic sores for prognostic implication and decision of revascularization strategy. We compared fractional myocardial mass (FMM) with angiographic scores for predicting myocardial ischemia.
Methods In this multicenter registry, 411 patients who underwent coronary computed tomography angiography (CCTA) were followed by invasive coronary angiography and FFR measurement. CCTA–derived %FMM with diameter stenosis ≥70% (%FMM-70) or ≥50% (%FMM-50) were compared with 9 angiographic scores (APPROACH, Duke Jeopardy, BARI, CASS, SYNTAX, Jenkins, BCIS-1, Leaman, Modified Duke) and were tested regarding their performance for predicting FFR ≤ 0.80. Predictive performance of %FMM or angiographic scores for FFR ≤ 0.80 established in derivation cohort (N = 250) and tested in validation cohort (N = 161).
Results The performance of %FMM-70 and %FMM-50 were similar to most angiographic scores (%FMM-70, c-statistics = 0.76; %FMM-50, 0.71; angiographic scores, 0.68 – 0.79). The frequency of FFR ≤ 0.80 increased consistently according to %FMM-70, %FMM-50, and all angiographic scores (p < 0.001, all). The optimal cutoff of %FMM-50 and %FMM-70 for FFR ≤ 0.80 were ≥34.5% and ≥9.8%, respectively. The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of %FMM-50 were 83%, 56%, 73%, 70%, 72%, and of %FMM-70 were 72%, 78%, 75%, 75%, and 75% using these cutoffs. Validation cohort showed consistent results.
Conclusion %FMM correlated well with angiographic scores and had a potential to be used as a non-invasive alternative to the angiographic scores. The integration of the severity of stenosis and the amount of subtended myocardium may improve the detection of clinically significant coronary artery stenosis.
Abstract 1175 Figure. FMM vs angiographic score
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Affiliation(s)
- H Y Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - J H Choi
- Samsung Medical Center, Seoul, Korea (Republic of)
| | - K H Kim
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - S M Kim
- Samsung Medical Center, Seoul, Korea (Republic of)
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Kim MS, Kim SM, Kim EK, Park SJ, Lee SC, Park SW, Choe YH, Chang SA. P5279Pericardial inflammation basced on cardiac magnetic resonance imaging in patients with tuberculous pericarditis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0250] [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
Background
While constrictive pericarditis has been traditionally considered a disabling disease, reversible constrictive pericarditis has been described in previous studies. But there are limited studies on cardiac imaging of tuberculous pericarditis. In particular, no studies on cardiac magnetic resonance imaging (CMR) have been reported. We aimed to investigate CMR findings including pericardial late gadolinium enhancement (LGE) and T2 fat suppression and black blood sequences in patients with tuberculous pericarditis.
Methods
We retrospectively analyzed medical records of patients with tuberculous pericarditis between January 2010 and January 2017 in Samsung Medical Center. Definite diagnosis of tuberculous pericarditis is based on the identification of Mycobacterium tuberculosis in pericardial fluid or tissue; probable diagnosis was made when there was other evidence of tuberculosis elsewhere in patients with unexplained pericarditis. We performed CMR at initial diagnosis. Treatment consists of the standard 4-drug antituberculosis regimen for 6 months with or without steroids. Echocardiography was also conducted at initial diagnosis and 6 months later.
Results
Total 39 cases with tuberculous pericarditis in immunocompetent patients were enrolled. Ten patients were diagnosed as definite tuberculous pericarditis. CMR finding at initial diagnosis divided into five groups: 1) pericardial effusion only (n=20, 51.3%), 2) effusive constrictive pericarditis (n=5, 12.8%), 3) constrictive pericarditis (n=11, 28.2%), 4) pericardial abscess formation (n=4, 10.3%) and 5) absence of pericardial effusion and constrictive physiology (n=1, 2.6%). One of the 4 patients with pericardial abscess formation was together with pericardial effusion and the other was accompanied by effusive constrictive pericarditis. Pericardial thickness increased to more than 4mm in 25 patients (64.1%) and the mean pericardial thickness was 10.0±6.9mm. Delayed enhancement of pericardium was noticed in 29 patients (74.4%). In T2 fat suppression and black blood sequences, 30 patients showed increased T2 signal intensity indicating inflammation with extensive edema. Pericardial thickening (>4mm) with constriction (n=15) was not statistically significant in the delayed enhancement and increased T2 signal intensity compared with pericardial thickening without constrictive pericarditis (n=10) (delayed enhancement 93.8% vs. 77.8% p=0.287; increased T2 signal intensity 88.9% vs. 87.5%, p=0.713). After 6 months, only 3 patients still had constrictive pericarditis in echocardiography.
Effusive constrictive pericarditis
Conclusions
Pericardial thickening is associated with delayed enhancement and increased T2 signal intensity in patients with tuberculous pericarditis regardless of constrictive pericarditis. Even though there were hemodynamic feature of constrictive pericarditis and pericardial inflammation with extensive edema in CMR at initial diagnosis, 80% of the patients were improved from constrictive pericarditis.
Acknowledgement/Funding
None
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Affiliation(s)
- M S Kim
- Gangnam CHA General Hospital, Cardiology, Seoul, Korea (Republic of)
| | - S M Kim
- Samsung Medical Center, Radiology, Cardiovascular Imaging Center, Seoul, Korea (Republic of)
| | - E K Kim
- Samsung Medical Center, Cardiology, Seoul, Korea (Republic of)
| | - S J Park
- Samsung Medical Center, Cardiology, Seoul, Korea (Republic of)
| | - S C Lee
- Samsung Medical Center, Cardiology, Seoul, Korea (Republic of)
| | - S W Park
- Samsung Medical Center, Cardiology, Seoul, Korea (Republic of)
| | - Y H Choe
- Samsung Medical Center, Radiology, Cardiovascular Imaging Center, Seoul, Korea (Republic of)
| | - S A Chang
- Samsung Medical Center, Cardiology, Seoul, Korea (Republic of)
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Nam A, Kim SM, Jeong JW, Song KH, Koo TS, Seo KW. Comparison of body surface area-based and weight-based dosing format for oral prednisolone administration in small and large-breed dogs. Pol J Vet Sci 2019; 20:611-613. [PMID: 29166276 DOI: 10.1515/pjvs-2017-0076] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
This study compared the pharmacokinetics of Prednisolone (PDS) in small- and large breed dogs with a dosing format based on body surface area (BSA) or body weight (BW). The maximum concentration and area under the curve in large-breed dogs orally administered 2 mg/kg PDS were significantly greater than those in small-breed dogs given 2 mg/kg and in large-breed dogs given 40 mg/m2. The higher blood concentrations that result from BW-based dosing of oral PDS in large-breed dogs can be more than required for effect. Meanwhile, BSA dosing at 40 mg/m may be suboptimal. These findings confirm important differences between standard PDS dosing schemes in dogs while highlighting the need to further optimize PDS dosing in large-breed dogs.
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20
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Kim YK, Haq MR, Kim SM. Glass molding of all glass Fresnel lens with vitreous carbon micromold. Opt Express 2019; 27:1553-1562. [PMID: 30696219 DOI: 10.1364/oe.27.001553] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 12/11/2018] [Indexed: 06/09/2023]
Abstract
An all glass Fresnel lens (AGFL) was fabricated by glass molding with a vitreous carbon (VC) micro mold. In the glass molding process, a glass plate was heated up to its softening temperature and pressed against to the VC mold to replicate the Fresnel pattern. The VC molds having negative shape Fresnel profile were fabricated by carbonization of replicated Furan precursor using a diamond turning machined nickel master. During the carbonization process, the Furan precursor shrank due to the thermal decomposition, and this shrinkage must be compensated to obtain a precise AGFL. In this study, we examined the shrinkage ratio during the carbonization process using a preliminary experiment using the commercially available PMMA Fresnel lens as the master, and fabricated a nickel master with an enlarged Fresnel profile for shrinkage compensation. To verify the compensation method, the surface profiles of the fabricated VC mold and molded AGFL were measured and compared with the designed profile. The deviations between measured and designed profiles were less than 4 μm. In addition, the tip radii of the grooves and draft angle of the molded AGFL were within the acceptable tolerance for CPV applications.
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21
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Jang J, Jung Y, Chae S, Bae T, Kim SM, Shim YJ, Chung SI, Yoon Y. XAV939, a Wnt/β-catenin pathway modulator, has inhibitory effects on LPS-induced inflammatory response. Immunopharmacol Immunotoxicol 2018; 41:394-402. [PMID: 30466341 DOI: 10.1080/08923973.2018.1536984] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Aim: In this study, we report the anti-inflammatory activity of XAV939, a modulator of the Wnt/β-catenin pathway. Methods: WNT/β-catenin pathway and NF-κB signaling pathway were examined in LPS-stimulated human bronchial epithelial cells and effects of XAV939 on these pathways were analyzed. The effect of XAV939 was confirmed in human umbilical vein endothelial cells. Results: LPS-induced expressions of pro-inflammatory genes IL-6, IL-8, TNF-α, IL-1β, MCP-1, MMP-9, iNOS and COX-2 were significantly and dose-dependently suppressed by XAV939. LPS-induced NF-κB signaling, such as IκB phosphorylation and degradation as well as nuclear translocation of NF-κB, was also suppressed by XAV939. Target DNA binding of NF-κB was significantly and dose-dependently suppressed by XAV939 during LPS-induced inflammatory response. The suppressive effects of XAV939 on NF-κB signaling, target DNA binding of NF-κB and pro-inflammatory gene expression were all rescued by over expression of β-catenin, which shows that the anti-inflammatory effect of XAV939 is mediated by the modulation of β-catenin, a central component of the WNT/β-catenin pathway. Conclusion: The findings of this study showed that XAV939 exerts anti-inflammatory effects through the modulation of the Wnt/β-catenin pathway.
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Affiliation(s)
- Jaewoong Jang
- a Department of Microbiology , Chung-Ang University College of Medicine , Seoul , Republic of Korea
| | - Yoonju Jung
- a Department of Microbiology , Chung-Ang University College of Medicine , Seoul , Republic of Korea
| | - Seyeon Chae
- a Department of Microbiology , Chung-Ang University College of Medicine , Seoul , Republic of Korea
| | - Taehyun Bae
- a Department of Microbiology , Chung-Ang University College of Medicine , Seoul , Republic of Korea
| | - Seok-Min Kim
- b School of Mechanical Engineering , Chung-Ang University , Seoul , Republic of Korea
| | - Yae Jie Shim
- c College of General Studies , Sangmyung University , Seoul , Republic of Korea
| | - Sang-In Chung
- a Department of Microbiology , Chung-Ang University College of Medicine , Seoul , Republic of Korea
| | - Yoosik Yoon
- a Department of Microbiology , Chung-Ang University College of Medicine , Seoul , Republic of Korea
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22
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Kim SM, Rhyu KH, Lim SJ. Salvage of failed osteosynthesis for an atypical subtrochanteric femoral fracture associated with long-term bisphosphonate treatment using a 95° angled blade plate. Bone Joint J 2018; 100-B:1511-1517. [PMID: 30418051 DOI: 10.1302/0301-620x.100b11.bjj-2018-0306.r1] [Citation(s) in RCA: 8] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AIMS The aim of this study was to evaluate the outcomes of a salvage procedure using a 95° angled blade plate for failed osteosynthesis of atypical subtrochanteric femoral fractures associated with the long-term use of bisphosphonates. These were compared with those for failed osteosynthesis of subtrochanteric fractures not associated with bisphosphonate treatment. PATIENTS AND METHODS Between October 2008 and July 2016, 14 patients with failed osteosynthesis of an atypical subtrochanteric femoral fracture were treated with a blade plate (atypical group). Their mean age was 67.8 years (60 to 74); all were female. During the same period, 21 patients with failed osteosynthesis of a typical subtrochanteric fracture underwent restabilization using a blade plate (typical group). Outcome variables included the time of union, postoperative complications, Harris Hip Score, and Sanders functional rating scale. RESULTS In the atypical group, union was achieved in 12 patients (85.7%) at a mean of 8.4 months (4 to 12). The mean follow-up was 31.2 months (12 to 92) The plate broke in one patient requiring further stabilization with a longer plate and strut-allograft. Another patient with failure of fixation and varus angulation at the fracture site declined further surgery. In the typical group, union was achieved in 18 patients (85.7%) at a mean of 7.9 months (4 to 12). There was no difference in the mean Harris Hip Score between the two groups (83.1 points vs 86.8 points; p = 0.522) at the time of final follow-up. Sanders functional rating scores were good or excellent in 78.6% of the atypical group and in 81.0% of the typical group. CONCLUSION The 95° angled blade plate was shown to be an effective fixation modality for nonunion of atypical subtrochanteric fractures with a high rate of union and functional improvement, comparable to those after fractures not associated with bisphosphonate treatment. Cite this article: Bone Joint J 2018;100-B:1511-17.
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Affiliation(s)
- S M Kim
- Department of Orthopaedic Surgery, Korea University Guro Hospital, Korea University School of Medicine, Seoul, South Korea
| | - K H Rhyu
- Department of Orthopedic Surgery, Kyung Hee University Hospital, College of Medicine, Kyung-Hee University, Seoul, South Korea
| | - S J Lim
- Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
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23
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Abbas N, Lu X, Badshah MA, In JB, Heo WI, Park KY, Lee MK, Kim CH, Kang P, Chang WJ, Kim SM, Seo SJ. Development of a Protein Microarray Chip with Enhanced Fluorescence for Identification of Semen and Vaginal Fluid. Sensors (Basel) 2018; 18:s18113874. [PMID: 30423842 PMCID: PMC6263525 DOI: 10.3390/s18113874] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 11/03/2018] [Accepted: 11/09/2018] [Indexed: 01/16/2023]
Abstract
The detection of body fluids has been used to identify a suspect and build a criminal case. As the amount of evidence collected at a crime site is limited, a multiplex identification system for body fluids using a small amount of sample is required. In this study, we proposed a multiplex detection platform using an Ag vertical nanorod metal enhanced fluorescence (MEF) substrate for semen and vaginal fluid (VF), which are important evidence in cases of sexual crime. The Ag nanorod MEF substrate with a length of 500 nm was fabricated by glancing angle deposition, and amino functionalization was conducted to improve binding ability. The effect of incubation time was analyzed, and an incubation time of 60 min was selected, at which the fluorescence signal was saturated. To assess the performance of the developed identification chip, the identification of semen and VF was carried out. The developed sensor could selectively identify semen and VF without any cross-reactivity. The limit of detection of the fabricated microarray chip was 10 times better than the commercially available rapid stain identification (RSID) Semen kit.
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Affiliation(s)
- Naseem Abbas
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Xun Lu
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Mohsin Ali Badshah
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Jung Bin In
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Won Il Heo
- Department of Dermatology, Chung-Ang University Hospital, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea.
| | - Kui Young Park
- Department of Dermatology, Chung-Ang University Hospital, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea.
| | - Mi-Kyung Lee
- Department of Laboratory Medicine, Chung-Ang University Hospital, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea.
| | - Cho Hee Kim
- Forensic DNA Division, National Forensic Service, 10 Ipchun-ro, Wonju-si, Gangwon-do 26460, Korea.
| | - Pilwon Kang
- Forensic DNA Division, National Forensic Service, 10 Ipchun-ro, Wonju-si, Gangwon-do 26460, Korea.
| | - Woo-Jin Chang
- Department of Mechanical Engineering, University of Wisconsin-Milwaukee, 3200 N Cramer St, Milwaukee, WI 53211, USA.
| | - Seok-Min Kim
- Department of Mechanical Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Seong Jun Seo
- Department of Dermatology, Chung-Ang University Hospital, 102 Heukseok-ro, Dongjak-gu, Seoul 06973, Korea.
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Park SJ, Kim SM, Ahn JH, Cho KH, Chang SA, Lee SC, Park SW, Choe YH, Oh JK. P6299Extracellular volume by cardiac magnetic resonance predicts outcomes in patients with severe aortic stenosis who underwent aortic valve replacement. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6299] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- S.-J Park
- Samsung Medical Center, Seoul, Korea Republic of
| | - S M Kim
- Samsung Medical Center, Seoul, Korea Republic of
| | - J H Ahn
- Samsung Medical Center, Seoul, Korea Republic of
| | - K H Cho
- Samsung Medical Center, Seoul, Korea Republic of
| | - S A Chang
- Samsung Medical Center, Seoul, Korea Republic of
| | - S C Lee
- Samsung Medical Center, Seoul, Korea Republic of
| | - S W Park
- Samsung Medical Center, Seoul, Korea Republic of
| | - Y H Choe
- Samsung Medical Center, Seoul, Korea Republic of
| | - J K Oh
- Samsung Medical Center, Seoul, Korea Republic of
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25
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Park I, Choi JH, Kim EK, Kim SM, Yang JH, Song YB, Hahn JY, Choi SH, Gwon HC, Lee SH, Choi YH, Oh JK. P1790Non-invasive identification of coronary collateral vessels by coronary computed tomography. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1790] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- I Park
- International ST.Mary's Hospital, Department of Internal medicine, Division of Cardiology, Incheon, Korea Republic of
| | - J H Choi
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - E K Kim
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - S M Kim
- Samsung Medical Center, Department of Radiology, Seoul, Korea Republic of
| | - J H Yang
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - Y B Song
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - J Y Hahn
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - S H Choi
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - H C Gwon
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - S H Lee
- Samsung Medical Center, Cardiology, Seoul, Korea Republic of
| | - Y H Choi
- Samsung Medical Center, Department of Radiology, Seoul, Korea Republic of
| | - J K Oh
- Mayo Clinic, Department of Internal medicine, Rochester, United States of America
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26
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Kim J, Hong D, Badshah MA, Lu X, Kim YK, Kim SM. Direct Metal Forming of a Microdome Structure with a Glassy Carbon Mold for Enhanced Boiling Heat Transfer. Micromachines (Basel) 2018; 9:E376. [PMID: 30424309 PMCID: PMC6187845 DOI: 10.3390/mi9080376] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 07/23/2018] [Accepted: 07/26/2018] [Indexed: 11/30/2022]
Abstract
The application of microtechnology to traditional mechanical industries is limited owing to the lack of suitable micropatterning technology for durable materials including metal. In this research, a glassy carbon (GC) micromold was applied for the direct metal forming (DMF) of a microstructure on an aluminum (Al) substrate. The GC mold with microdome cavities was prepared by carbonization of a furan precursor, which was replicated from the thermal reflow photoresist master pattern. A microdome array with a diameter of 8.4 μm, a height of ~0.74 μm, and a pitch of 9.9 μm was successfully fabricated on an Al substrate by using DMF at a forming temperature of 645 °C and an applied pressure of 2 MPa. As a practical application of the proposed DMF process, the enhanced boiling heat transfer characteristics of the DMF microdome Al substrate were analyzed. The DMF microdome Al substrate showed 20.4 ± 2.6% higher critical heat flux and 34.1 ± 5.3% higher heat transfer coefficient than those of a bare Al substrate.
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Affiliation(s)
- Jun Kim
- Department of Mechanical System Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Dongin Hong
- Department of Mechanical System Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Mohsin Ali Badshah
- Department of Mechanical Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Xun Lu
- Department of Mechanical Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Young Kyu Kim
- Department of Mechanical Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
| | - Seok-Min Kim
- Department of Mechanical System Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
- Department of Mechanical Engineering, Chung-Ang University, Heukseok-dong, Dongjak-gu, Seoul 06974, Korea.
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Kim SW, Hong N, Rhee Y, Choi YC, Shin HY, Kim SM. Clinical and laboratory features of patients with osteomalacia initially presenting with neurological manifestations. Osteoporos Int 2018; 29:1617-1626. [PMID: 29623355 DOI: 10.1007/s00198-018-4501-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 03/22/2018] [Indexed: 10/17/2022]
Abstract
UNLABELLED Patients with osteomalacia often visit the neurology department with conditions mimicking other myopathies. We analyzed clinical features of osteomalacia patients who visited the neurology department. These patients frequently presented with hypocalcemia, hypovitaminosis D, and pain with less severe weakness. Osteomalacia should be considered when patients present with pain and weakness. INTRODUCTION Osteomalacia is a disease of bone metabolism; however, some patients with osteomalacia initially visit the neurology department. As these patients often complain of weakness and gait disturbance, osteomalacia can be confused with other myopathies. We analyzed the clinical features of patients with osteomalacia who visited the neurology department. METHODS We retrospectively reviewed the medical records. Osteomalacia was diagnosed based on symptoms, laboratory features, and imaging results. We compared the characteristics of patients with osteomalacia who visited the neurology department with (1) those who did not visit the neurology department and (2) patients with idiopathic inflammatory myopathy. RESULTS Eighteen patients with osteomalacia visited the neurology department (NR group). The common etiologies in the NR group included tumors or antiepileptic medication, whereas antiviral medication was the most common in patients who did not visit the neurology department (non-NR group). The NR group showed lower serum calcium (p = 0.004) and 25-hydroxyvitamin D (p = 0.006) levels than the non-NR group. When compared with patients with inflammatory myopathy, both groups showed proximal dominant weakness. However, pain was more common in osteomalacia than in myopathy (p = 0.008), and patients with osteomalacia showed brisk deep tendon reflex more often (p = 0.017). Serum calcium (p = 0.003) and phosphate (p < 0.001) levels were lower in osteomalacia than in myopathy. CONCLUSIONS It was not uncommon for patients with osteomalacia to visit the neurology department. The clinical presentation of these patients can be more complex owing the superimposed neurological disease and accompanying hypocalcemia. Osteomalacia should be considered when patients present with pain and weakness.
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Affiliation(s)
- S W Kim
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea
| | - N Hong
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Y Rhee
- Department of Internal Medicine, Severance Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Y-C Choi
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea
| | - H Y Shin
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea
| | - S M Kim
- Department of Neurology, Yonsei University College of Medicine, Seoul, South Korea.
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Abstract
A low-cost fabrication method for a high-surface-quality glass microlens array (MLA) was proposed using a glass molding technique with a vitreous carbon (VC) mold. A VC mold with a high-surface-quality MLA cavity was fabricated, and the glass MLA with a root mean square surface roughness of 4.59 nm was replicated using the VC mold. To obtain the glass MLA with high replication quality, the effects of molding conditions were examined. The surface quality was not degraded during the proposed VC mold fabrication method and glass molding process. The focused beam spot of the glass molded MLA was analyzed; it showed a diffraction-limited characteristic of the glass molded MLA.
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In JB, Cho KR, Tran TX, Kim SM, Wang Y, Grigoropoulos CP, Noy A, Fornasiero F. Effect of Enhanced Thermal Stability of Alumina Support Layer on Growth of Vertically Aligned Single-Walled Carbon Nanotubes and Their Application in Nanofiltration Membranes. Nanoscale Res Lett 2018; 13:173. [PMID: 29882075 PMCID: PMC5992115 DOI: 10.1186/s11671-018-2585-3] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 05/28/2018] [Indexed: 05/14/2023]
Abstract
We investigate the thermal stability of alumina supporting layers sputtered at different conditions and its effect on the growth of aligned single-walled carbon nanotube arrays. Radio frequency magnetron sputtering of alumina under oxygen-argon atmosphere produces a Si-rich alumina alloy film on a silicon substrate. Atomic force microscopy on the annealed catalysts reveals that Si-rich alumina films are more stable than alumina layers with low Si content at the elevated temperatures at which the growth of single-walled carbon nanotubes is initiated. The enhanced thermal stability of the Si-rich alumina layer results in a narrower (< 2.2 nm) diameter distribution of the single-walled carbon nanotubes. Thanks to the smaller diameters of their nanotube pores, membranes fabricated with vertically aligned nanotubes grown on the stable layers display improved ion selectivity.
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Affiliation(s)
- Jung Bin In
- School of Mechanical Engineering, Chung-Ang University, Seoul, 156-756, Republic of Korea.
| | - Kang Rae Cho
- The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Tung Xuan Tran
- School of Mechanical Engineering, Chung-Ang University, Seoul, 156-756, Republic of Korea
| | - Seok-Min Kim
- School of Mechanical Engineering, Chung-Ang University, Seoul, 156-756, Republic of Korea
| | - Yinmin Wang
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
| | - Costas P Grigoropoulos
- Department of Mechanical Engineering, University of California, Berkeley, CA, 94720-1740, USA
| | - Aleksandr Noy
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
- School of Natural Sciences, University of California, Merced, CA, 94343, USA
| | - Francesco Fornasiero
- Physical and Life Sciences Directorate, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA.
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Hwang SM, Kim HJ, Kim SM, Jung Y, Park SW, Chung IY. Lysophosphatidylserine receptor P2Y10: A G protein-coupled receptor that mediates eosinophil degranulation. Clin Exp Allergy 2018; 48:990-999. [PMID: 29700886 DOI: 10.1111/cea.13162] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [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: 08/15/2017] [Revised: 04/13/2018] [Accepted: 04/16/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND P2Y10, along with GPR34 and GPR174, is a G protein-coupled receptor that is activated by an endogenous lipid mediator lysophosphatidylserine (LysoPS). Its expression pattern and its function are completely unknown. We have previously shown that P2Y10 is one of the highly up-regulated genes at the late differentiation stage during in vitro eosinophilopoiesis. OBJECTIVE We explored the expression and functions of P2Y10 in human cord blood (CB)-derived and peripheral blood (PB) eosinophils. METHODS Real-time PCR, FACS, Western blot, ELISA, and chemotaxis assays were performed to determine the expression and function of P2Y10. RESULTS As CB cells differentiated towards eosinophils, P2Y10 mRNA and protein were abundantly expressed. P2Y10 was the most highly expressed in the granulocytes from PB, to a lesser extent in monocytes, and least in lymphocytes. Further fractionation of granulocytes revealed that eosinophils express P2Y10 much more strongly than do neutrophils. PB eosinophils solely expressed P2Y10 among the three LysoPS receptors, while PB neutrophils expressed the three at comparable levels. LysoPS activated both CB and PB eosinophils to induce a robust ERK phosphorylation. Importantly, LysoPS was capable of triggering degranulation of ECP in PB eosinophils. This response was significantly reduced by pharmacological inhibitors of TNF-alpha-converting enzyme (TACE), epidermal growth factor receptor (EGFR), and ERK1/2, which were known to be required in P2Y10-mediated signalling pathways. However, LysoPS had no effect on chemotaxis, differentiation, or eosinophil survival. CONCLUSIONS AND CLINICAL RELEVANCE LysoPS provokes eosinophil degranulation through P2Y10. Therefore, P2Y10 is a potential therapeutic target to control eosinophil-associated diseases.
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Affiliation(s)
- S M Hwang
- Department of Bionano Technology, Hanyang University, Ansan, Gyeonggi-do, Korea
| | - H J Kim
- Department of Bionano Technology, Hanyang University, Ansan, Gyeonggi-do, Korea
| | - S M Kim
- Department of Bionano Technology, Hanyang University, Ansan, Gyeonggi-do, Korea
| | - Y Jung
- Department of Microbiology, School of Medicine, Gachon University, Incheon, Korea
| | - S W Park
- Graduate School of Medicine, Soonchunhyang University Hospital, Bucheon, Gyeonggi-do, Korea
| | - I Y Chung
- Department of Bionano Technology, Hanyang University, Ansan, Gyeonggi-do, Korea.,Division of Molecular and Life Sciences, College of Science and Technology, Hanyang University, Ansan, Gyeonggi-do, Korea
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Ban YH, Oh SC, Seo SH, Kim SM, Choi IP, Greenberg PD, Chang J, Kim TD, Ha SJ. miR-150-Mediated Foxo1 Regulation Programs CD8 + T Cell Differentiation. Cell Rep 2018; 20:2598-2611. [PMID: 28903041 DOI: 10.1016/j.celrep.2017.08.065] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [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: 02/03/2017] [Revised: 06/30/2017] [Accepted: 08/21/2017] [Indexed: 01/01/2023] Open
Abstract
MicroRNA (miR)-150 is a developmental regulator of several immune-cell types, but its role in CD8+ T cells is largely unexplored. Here, we show that miR-150 regulates the generation of memory CD8+ T cells. After acute virus infection, miR-150 knockout (KO) mice exhibited an accelerated differentiation of CD8+ T cells into memory cells and improved production of effector cytokines. Additionally, miR-150 KO CD8+ T cells displayed an enhanced recall response and improved protection against infections with another virus and bacteria. We found that forkhead box O1 (Foxo1) and T cell-specific transcription factor 1 (TCF1) are upregulated during the early activation phase in miR-150 KO CD8+ T cells and that miR-150 directly targets and suppresses Foxo1. These results suggest that miR-150-mediated suppression of Foxo1 regulates the balance between effector and memory cell differentiation, which might aid in the development of improved vaccines and T cell therapeutics.
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Affiliation(s)
- Young Ho Ban
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul 03722, Korea
| | - Se-Chan Oh
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Sang-Hwan Seo
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea
| | - Seok-Min Kim
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - In-Pyo Choi
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Philip D Greenberg
- Fred Hutchinson Cancer Research Center, University of Washington, Seattle, WA 98195, USA
| | - Jun Chang
- Division of Life & Pharmaceutical Sciences, Center for Cell Signaling & Drug Discovery Research, Ewha Womans University, Seoul 03760, Korea
| | - Tae-Don Kim
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 34141, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea.
| | - Sang-Jun Ha
- Department of Biochemistry, College of Life Science & Biotechnology, Yonsei University, Seoul 03722, Korea.
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Jang H, Refatul Haq M, Kim Y, Kim J, Oh PH, Ju J, Kim SM, Lim J. Fabrication of Glass Microchannel via Glass Imprinting using a Vitreous Carbon Stamp for Flow Focusing Droplet Generator. Sensors (Basel) 2017; 18:E83. [PMID: 29286341 PMCID: PMC5795384 DOI: 10.3390/s18010083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2017] [Revised: 12/21/2017] [Accepted: 12/27/2017] [Indexed: 11/25/2022]
Abstract
This study reports a cost-effective method of replicating glass microfluidic chips using a vitreous carbon (VC) stamp. A glass replica with the required microfluidic microstructures was synthesized without etching. The replication method uses a VC stamp fabricated by combining thermal replication using a furan-based, thermally-curable polymer with carbonization. To test the feasibility of this method, a flow focusing droplet generator with flow-focusing and channel widths of 50 µm and 100 µm, respectively, was successfully fabricated in a soda-lime glass substrate. Deviation between the geometries of the initial shape and the vitreous carbon mold occurred because of shrinkage during the carbonization process, however this effect could be predicted and compensated for. Finally, the monodispersity of the droplets generated by the fabricated microfluidic device was evaluated.
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Affiliation(s)
- Hyungjun Jang
- School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Muhammad Refatul Haq
- School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Youngkyu Kim
- School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Jun Kim
- School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Pyoung-Hwa Oh
- School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Jonghyun Ju
- School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Seok-Min Kim
- School of Mechanical Engineering, College of Engineering, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Korea.
| | - Jiseok Lim
- School of Mechanical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Korea.
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33
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Seo SH, Jang MS, Kim DJ, Kim SM, Oh SC, Jung CR, Park Y, Ha SJ, Jung H, Park YJ, Yoon SR, Choi I, Kim TD. MicroRNA-150 controls differentiation of intraepithelial lymphocytes through TGF-β receptor II regulation. J Allergy Clin Immunol 2017; 141:1382-1394.e14. [PMID: 28797734 DOI: 10.1016/j.jaci.2017.07.019] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 07/03/2017] [Accepted: 07/12/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND Intraepithelial lymphocytes (IELs) in the intestines play pivotal roles in maintaining the integrity of the mucosa, regulating immune cells, and protecting against pathogenic invasion. Although several extrinsic factors, such as TGF-β, have been identified to contribute to IEL generation, intrinsic regulatory factors have not been determined fully. OBJECTIVE Here we investigated the regulation of IEL differentiation and the underlying mechanisms in mice. METHODS We analyzed IELs and the expression of molecules associated with IEL differentiation in wild-type control and microRNA (miRNA)-150 knockout mice. Methotrexate was administered to mice lacking miR-150 and control mice. RESULTS miR-150 deficiency reduced the IEL population in the small intestine and increased susceptibility to methotrexate-induced mucositis. Evaluation of expression of IEL differentiation-associated molecules showed that miR-150-deficient IELs exhibited decreased expression of TGF-β receptor (TGF-βR) II, CD103, CD8αα, and Runt-related transcription factor 3 in all the IEL subpopulations. The reduced expression of TGF-βRII in miR-150-deficient IELs was caused by increased expression of c-Myb/miR-20a. Restoration of miR-150 or inhibition of miR-20a recovered the TGF-βRII expression. CONCLUSION miR-150 is an intrinsic regulator of IEL differentiation through TGF-βRII regulation. miR-150-mediated IEL generation is crucial for maintaining intestinal integrity against anticancer drug-induced mucositis.
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Affiliation(s)
- Sang-Hwan Seo
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Min Seong Jang
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Doo-Jin Kim
- Infectious Disease Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Seok-Min Kim
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Se-Chan Oh
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Cho-Rok Jung
- the Stem Cell Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Yunji Park
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Korea
| | - Sang-Jun Ha
- Department of Biochemistry, College of Life Science and Biotechnology, Yonsei University, Seoul, Korea
| | - Haiyoung Jung
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Young-Jun Park
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Suk Ran Yoon
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea
| | - Inpyo Choi
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea.
| | - Tae-Don Kim
- Immunotherapy Convergence Research Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea; Department of Functional Genomics, KRIBB School of Bioscience, Korea University of Science and Technology (UST), Daejeon, Korea.
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Kim SM, Park CM, Yoo JH, Kim K. Development of a finger-like mechanism of end-effector for micro surgery. Annu Int Conf IEEE Eng Med Biol Soc 2017; 2016:5224-5227. [PMID: 28269442 DOI: 10.1109/embc.2016.7591905] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Neurosurgery had been considered nearly impossible due to its technical difficulty and the danger to its special target organ, but with endoscopic methods, many such surgeries can be made safely through the nose. Endoscopic neurosurgery is limited by available instruments, however, and there remain some areas of the human body inaccessible to standard surgical tools. To overcome some of these limitations, in this study we developed a simple mechanism that could form a high curvature in a narrow space. The end product is a finger-like mechanism consisting of five body parts and four joints. All body parts are connected in series, having a total length of 20mm and a diameter of φ4mm. A four-bar linkage internally connects the body parts and joints, and a nitinol backbone was used to improve repeatability. The first joint is driven by a rod or wire, and the shape of the mechanism is determined by rotating the first joint, because the position of each joint depends on the position of the joint before it. The study verified that an image sensor in the end of the finger-like mechanism has a wider range of view, 210 degrees than a conventional endoscope of 100 degrees. Finally, skull model simulation suggests that this device could be used in real neurosurgical applications.
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Kim JJ, Kim D, Yim JY, Kang JH, Han KH, Kim SM, Hwang KR, Ku SY, Suh CS, Kim SH, Choi YM. Polycystic ovary syndrome with hyperandrogenism as a risk factor for non-obese non-alcoholic fatty liver disease. Aliment Pharmacol Ther 2017; 45:1403-1412. [PMID: 28370150 DOI: 10.1111/apt.14058] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [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: 12/02/2016] [Revised: 12/13/2016] [Accepted: 03/04/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is known to be associated with polycystic ovary syndrome (PCOS). However, most studies investigated the prevalence of NAFLD in obese PCOS patients. AIM To compare the prevalence of non-obese NAFLD in women with or without PCOS, and to assess an independent association between PCOS and NAFLD in a non-obese Asian cohort. METHODS This was a case-control study using a prospective PCOS cohort. After subjects with other potential causes of chronic liver disease were excluded, 275 non-obese women with PCOS and 892 non-obese controls were enrolled. NAFLD was determined by hepatic ultrasonography. Main outcomes were the prevalence of NAFLD on hepatic ultrasonography between non-obese women with or without PCOS, and an independent association between non-obese NAFLD and PCOS. RESULTS Non-obese women with PCOS had a significantly higher prevalence of NAFLD than those without PCOS (5.5% vs. 2.8%, P = 0.027). PCOS was associated with non-obese NAFLD (odds ratio: 2.62, 95% confidence intervals: 1.25-5.48) after adjustment for age and body mass index (BMI). In women with PCOS, the level of androgenicity represented by free testosterone or free androgen index was associated with NAFLD after adjustment for age, BMI, lipid profile, insulin resistance or glycaemic status. CONCLUSIONS Non-obese NAFLD is more prevalent in women with polycystic ovary syndrome than in those without. In non-obese patients with polycystic ovary syndrome, hyperandrogenemia may be an independent risk factor for non-obese NAFLD.
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Affiliation(s)
- J J Kim
- Department of Obstetrics and Gynecology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea.,The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea
| | - D Kim
- Department of Internal Medicine, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea.,Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA, USA
| | - J Y Yim
- Department of Internal Medicine, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - J H Kang
- Department of Radiology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - K H Han
- Department of Obstetrics and Gynecology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - S M Kim
- Department of Obstetrics and Gynecology, Healthcare System Gangnam Center, Seoul National University Hospital, Seoul, Korea
| | - K R Hwang
- Department of Obstetrics and Gynecology, Seoul Municipal Boramae Hospital, Seoul, Korea
| | - S Y Ku
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - C S Suh
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - S H Kim
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - Y M Choi
- The Institute of Reproductive Medicine and Population, Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.,Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
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Jang J, Jung Y, Seo SJ, Kim SM, Shim YJ, Cho SH, Chung SI, Yoon Y. Berberine activates AMPK to suppress proteolytic processing, nuclear translocation and target DNA binding of SREBP-1c in 3T3-L1 adipocytes. Mol Med Rep 2017; 15:4139-4147. [PMID: 28487951 PMCID: PMC5436149 DOI: 10.3892/mmr.2017.6513] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [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: 08/20/2016] [Accepted: 03/06/2017] [Indexed: 12/11/2022] Open
Abstract
AMP-activated protein kinase (AMPK) and sterol regulatory element binding protein (SREBP)‑1c are major therapeutic targets in the treatment of metabolic diseases. In the present study, the fat‑reducing mechanisms of berberine (BBR), a natural isoquinoline, was investigated by examining the AMPK‑mediated modulation of SREBP‑1c in 3T3‑L1 adipocytes. BBR activated AMPK in a dose‑ and time‑dependent manner, and increased the phosphorylation of the 125‑kDa precursor form of SREBP‑1c, which suppressed its proteolytic processing into the mature 68‑kDa form and its subsequent nuclear translocation. The binding of nuclear SREBP‑1c to its E‑box motif‑containing target DNA sequence was decreased following treatment with BBR, which led to a decrease in the expression of lipogenic genes and subsequently reduced intracellular fat accumulation. Transfection with AMPKα1 siRNA, and not control siRNA, inhibited BBR‑induced phosphorylation of the 125‑kDa SREBP‑1c, which confirmed that AMPK was responsible for phosphorylating SREBP‑1c. AMPKα1 siRNA transfection rescued the proteolytic processing, nuclear translocation and target DNA binding of SREBP‑1c that had been suppressed by BBR. In addition, BBR‑induced suppression of lipogenic gene expression and intracellular fat accumulation were rescued by AMPKα1 siRNA transfection. In conclusion, the results of the present study demonstrate that BBR activates AMPK to induce phosphorylation of SREBP‑1c, thereby suppressing proteolytic processing, nuclear translocation and target DNA binding of SREBP‑1c, which leads to a reduction in lipogenic gene expression and intracellular fat accumulation. The results of the present study indicate that BBR may be a potential candidate for the development of drugs to treat obesity.
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Affiliation(s)
- Jaewoong Jang
- Department of Microbiology, Chung‑Ang University College of Medicine, Dongjak‑gu, Seoul 156‑756, Republic of Korea
| | - Yoonju Jung
- Department of Microbiology, Chung‑Ang University College of Medicine, Dongjak‑gu, Seoul 156‑756, Republic of Korea
| | - Seong Jun Seo
- Department of Dermatology, Chung‑Ang University College of Medicine, Dongjak‑gu, Seoul 156‑756, Republic of Korea
| | - Seok-Min Kim
- School of Mechanical Engineering, Chung‑Ang University, Dongjak‑gu, Seoul 156‑756, Republic of Korea
| | - Yae Jie Shim
- College of General Studies, Sangmyung University, Jongno‑gu, Seoul 110‑743, Republic of Korea
| | - Soo Hyun Cho
- Department of Family Medicine, College of Medicine, Chung‑Ang University Hospital, Dongjak‑gu, Seoul 156‑755, Republic of Korea
| | - Sang-In Chung
- Department of Microbiology, Chung‑Ang University College of Medicine, Dongjak‑gu, Seoul 156‑756, Republic of Korea
| | - Yoosik Yoon
- Department of Microbiology, Chung‑Ang University College of Medicine, Dongjak‑gu, Seoul 156‑756, Republic of Korea
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Jang J, Jung Y, Chae S, Chung SI, Kim SM, Yoon Y. WNT/β-catenin pathway modulates the TNF-α-induced inflammatory response in bronchial epithelial cells. Biochem Biophys Res Commun 2017; 484:442-449. [PMID: 28137581 DOI: 10.1016/j.bbrc.2017.01.156] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 01/27/2017] [Indexed: 11/30/2022]
Abstract
In this study, TNF-α was found to activate the WNT/β-catenin pathway in BEAS-2B human bronchial epithelial cells. Levels of phospho-LRP6, Dvl-2, and phospho-GSK-3β were elevated, while that of Axin was reduced by TNF-α treatment. Nuclear translocation of β-catenin and the reporter activity of a β-catenin-responsive promoter were increased by TNF-α treatment. Under the same experimental conditions, TNF-α activated the NF-κB signaling, which includes the phosphorylation and degradation of IκB and nuclear translocation and target DNA binding of NF-κB, and it was found that an inhibitor of NF-κB activation, JSH-23, inhibited TNF-α-induced Wnt signaling as well as NF-κB signaling. It was also found that recombinant Wnt proteins induced NF-κB nuclear translocations and its target DNA binding, suggesting that Wnt signaling and NF-κB signaling were inter-connected. TNF-α-induced modulations of IκB and NF-κB as well as pro-inflammatory cytokine expression were significantly suppressed by the transfection of β-catenin siRNA compared to that of control siRNA. Transfection of a β-catenin expression plasmid augmented the TNF-α-induced modulations of IκB and NF-κB as well as pro-inflammatory cytokine expression. These results clearly demonstrated that the WNT/β-catenin pathway modulates the inflammatory response induced by TNF-α, suggesting that this pathway may be a useful target for the effective treatment of bronchial inflammation.
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Affiliation(s)
- Jaewoong Jang
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Yoonju Jung
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Seyeon Chae
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Sang-In Chung
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea
| | - Seok-Min Kim
- School of Mechanical Engineering, Chung-Ang University, Seoul 156-756, Republic of Korea
| | - Yoosik Yoon
- Department of Microbiology, Chung-Ang University, College of Medicine, Seoul 156-756, Republic of Korea.
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Lee YS, Lee KH, Park EK, Lee YK, Kim SM. Postoperative Pain After Total Laparoscopic Hysterectomy: A Comparison of Transumbilical Single-Port Access and Conventional Three-Port Laparoscopic Surgery. J Minim Invasive Gynecol 2016. [DOI: 10.1016/j.jmig.2016.08.663] [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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39
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McCracken AN, McMonigle RJ, Tessier J, Fransson R, Perryman MS, Chen B, Keebaugh A, Selwan E, Barr SA, Kim SM, Roy SG, Liu G, Fallegger D, Sernissi L, Brandt C, Moitessier N, Snider AJ, Clare S, Müschen M, Huwiler A, Kleinman MT, Hanessian S, Edinger AL. Phosphorylation of a constrained azacyclic FTY720 analog enhances anti-leukemic activity without inducing S1P receptor activation. Leukemia 2016; 31:669-677. [PMID: 27573555 PMCID: PMC5332311 DOI: 10.1038/leu.2016.244] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [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: 04/29/2016] [Revised: 07/19/2016] [Accepted: 08/22/2016] [Indexed: 02/07/2023]
Abstract
The frequency of poor outcomes in relapsed leukemia patients underscores the need for novel therapeutic approaches. The FDA-approved immunosuppressant FTY720 limits leukemia progression by activating protein phosphatase 2A and restricting nutrient access. Unfortunately, FTY720 cannot be re-purposed for use in cancer patients due to on-target toxicity associated with S1P receptor activation at the elevated, anti-neoplastic dose. Here we show that the constrained azacyclic FTY720 analog SH-RF-177 lacks S1P receptor activity but maintains anti-leukemic activity in vitro and in vivo. SH-RF-177 was not only more potent than FTY720, but killed via a distinct mechanism. Phosphorylation is dispensable for FTY720’s anti-leukemic actions. However, chemical biology and genetic approaches demonstrated that the sphingosine kinase 2- (SPHK2) mediated phosphorylation of SH-RF-177 led to engagement of a pro-apoptotic target and increased potency. The cytotoxicity of membrane-permeant FTY720 phosphonate esters suggests that the enhanced potency of SH-RF-177 stems from its more efficient phosphorylation. The tight inverse correlation between SH-RF-177 IC50 and SPHK2 mRNA expression suggests a useful biomarker for SH-RF-177 sensitivity. In summary, these studies indicate that FTY720 analogs that are efficiently phosphorylated but fail to activate S1P receptors may be superior anti-leukemic agents compared to compounds that avoid cardiotoxicity by eliminating phosphorylation.
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Affiliation(s)
- A N McCracken
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - R J McMonigle
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - J Tessier
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada
| | - R Fransson
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada
| | - M S Perryman
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada
| | - B Chen
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada
| | - A Keebaugh
- Department of Community and Environmental Medicine, School of Medicine, University of California, Irvine, CA, USA
| | - E Selwan
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - S A Barr
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - S M Kim
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - S G Roy
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - G Liu
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
| | - D Fallegger
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - L Sernissi
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada
| | - C Brandt
- The Wellcome Trust Sanger Genome Campus, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - N Moitessier
- Department of Chemistry, McGill University, Montréal, Québec, Canada
| | - A J Snider
- Cancer Center and Department of Medicine, Stony Brook University, Stony Brook, NY, USA.,Northport Veterans Affairs Medical Center, Northport, NY, USA
| | - S Clare
- The Wellcome Trust Sanger Genome Campus, Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK
| | - M Müschen
- Department of Laboratory Medicine, University of California, San Francisco, CA, USA
| | - A Huwiler
- Institute of Pharmacology, University of Bern, Bern, Switzerland
| | - M T Kleinman
- Department of Community and Environmental Medicine, School of Medicine, University of California, Irvine, CA, USA
| | - S Hanessian
- Department of Chemistry, Université de Montréal, Montreal, Quebec, Canada.,Department of Pharmaceutical Sciences, University of California Irvine, Irvine, CA, USA
| | - A L Edinger
- Department of Developmental and Cell Biology, University of California, Irvine, CA, USA
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40
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Jung SA, Lee DH, Moon JH, Hong SW, Shin JS, Hwang IY, Shin YJ, Kim JH, Gong EY, Kim SM, Lee EY, Lee S, Kim JE, Kim KP, Hong YS, Lee JS, Jin DH, Kim T, Lee WJ. Corrigendum to 'L-Ascorbic acid can abrogate SVCT-2-dependent cetuximab resistance mediated by mutant KRAS in human colon cancer cells': [Free Radic. Biol. Med. 95 (2016) 200-208]. Free Radic Biol Med 2016; 97:620. [PMID: 27476024 DOI: 10.1016/j.freeradbiomed.2016.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- S A Jung
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - D H Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Biomedical Science and Engineering Interdisciplinary Program, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, Republic of Korea
| | - J H Moon
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S W Hong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J S Shin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - I Y Hwang
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - Y J Shin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J H Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - E Y Gong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S M Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - E Y Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - S Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J E Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - K P Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - Y S Hong
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - J S Lee
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea
| | - D H Jin
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Department of Convergence Medicine, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea.
| | - T Kim
- Department of Oncology, University of Ulsan College of Medicine, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea; Innovative Cancer Research, Asan Institute for Life Science, Asan Medical Center, 88 Olympicro-43gil, Songpa-gu, Seoul, Republic of Korea.
| | - W J Lee
- Department of Anatomy and Tumor Immunity Medical Research Center, Seoul National University College of Medicine, Seoul 110-744, Republic of Korea
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Park HJ, Jang H, Kim JH, Lee JH, Shin HY, Kim SM, Park KD, Yim SV, Lee JH, Choi YC. Discovery of pathogenic variants in a large Korean cohort of inherited muscular disorders. Clin Genet 2016; 91:403-410. [PMID: 27363342 DOI: 10.1111/cge.12826] [Citation(s) in RCA: 16] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/06/2016] [Accepted: 06/17/2016] [Indexed: 01/31/2023]
Abstract
Inherited muscular disorders (IMDs) are clinically and genetically heterogeneous genetic disorders. We investigated the mutational spectrum and genotype-phenotype correlations in Korean patients with IMD. We developed a targeted panel of 69 known IMD genes and recruited a total of 209 Korean patients with IMD. Targeted capture sequencing identified 994 different variants. Among them, 98 variants were classified as pathogenic/likely pathogenic variants; 38 were novel variations. A total of 39 patients had the pathogenic/likely pathogenic variants. Among them, 75 (36%) patients were genetically confirmed, and 18 (9%) patients had one heterozygous variant of recessive myopathy. However, two genetically confirmed patients had an additional heterozygous variant of another recessive myopathy. Four patients with one heterozygous variant of a recessive myopathy showed different phenotypes, compared with the known phenotype of the identified gene. The major causative genes of Korean patients with IMDs were DMD (19 patients), COL6A1 (9), DYSF (9), GNE (7), LMNA (7), CAPN3 (6), and RYR1 (5). This study showed the mutational and clinical spectra in Korean patients with IMD and confirmed the usefulness of strategies utilizing targeted sequencing.
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Affiliation(s)
- H J Park
- Department of Neurology, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea.,Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - H Jang
- Department of Chemistry, Yonsei University, Seoul, Korea
| | - J H Kim
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, Korea
| | - J H Lee
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - H Y Shin
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - S M Kim
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
| | - K D Park
- Department of Neurology, Mokdong Hospital, Ewha Womans University School of Medicine, Seoul, Korea
| | - S-V Yim
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, Korea
| | - J H Lee
- Department of Clinical Pharmacology and Therapeutics, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Y-C Choi
- Department of Neurology, Yonsei University College of Medicine, Seoul, Korea
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Li H, Kim SM, Savkovic V, Jin SA, Choi YD, Yun SJ. Expression of soluble adenylyl cyclase in acral melanomas. Clin Exp Dermatol 2015; 41:425-9. [PMID: 26290224 DOI: 10.1111/ced.12730] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2015] [Indexed: 02/05/2023]
Abstract
Soluble adenylyl cyclase (sAC) regulates melanocytic cells, and is a diagnostic marker for pigmented skin lesions. Because only a few studies on sAC expression in acral melanomas have been performed, we investigated the histopathological significance of sAC expression in 33 cases of acral melanoma, and assessed its diagnostic value in distinguishing melanoma in situ (MIS, n = 17) from acral invasive melanomas (n = 16) and melanocytic naevi (n = 11). Acral melanomas exhibited more marked nuclear immunopositivity compared with acral melanocytic naevi. sAC expression significantly correlated with the nuclear morphology of melanocytes and melanoma cells, namely, hyperchromatic nuclei and prominent nucleoli within vesicular nuclei. sAC expression was predominantly observed in the hyperchromatic nuclei of MIS and the prominent nucleoli invasive melanomas, respectively. In vitro culture models of melanocytes and melanoma cell lines exhibited sAC staining patterns similar to those of acral melanomas. Differentiation induction showed that nuclear and nucleolar expression varied depending on cell morphology. sAC immunostaining may be useful for the differential diagnosis of acral melanocytic lesions, and sAC expressed in the nucleus and nucleolus might be related to cytological and nuclear changes associated with invasion and progression of acral melanomas.
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Affiliation(s)
- H Li
- Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea.,Department of Pathology, Chonnam National University Medical School, Gwangju, South Korea
| | - S M Kim
- Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea
| | - V Savkovic
- Translational Centre for Regenerative Medicine, University of Leipzig, Germany
| | - S A Jin
- Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea
| | - Y D Choi
- Translational Centre for Regenerative Medicine, University of Leipzig, Germany
| | - S J Yun
- Department of Dermatology, Chonnam National University Medical School, Gwangju, South Korea
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Lee SM, Park JS, Norwitz ER, Oh S, Kim EJ, Kim SM, Lee J, Kim BJ, Park CW, Jun JK. Mid-trimester amniotic fluid pro-inflammatory biomarkers predict the risk of spontaneous preterm delivery in twins: a retrospective cohort study. J Perinatol 2015; 35:542-6. [PMID: 25856763 DOI: 10.1038/jp.2015.29] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [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: 11/05/2014] [Revised: 02/09/2015] [Accepted: 02/23/2015] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To evaluate the association between the concentrations of immune-related proteins in mid-trimester amniotic fluid (AF) and the subsequent risk of spontaneous preterm delivery in twins. STUDY DESIGN The study population consisted of consecutive women with a twin pregnancy who underwent clinically indicated genetic amniocentesis at 15 to 20 weeks, and had a subsequent spontaneous delivery in the early preterm period (<32 weeks (cases)) or at term (37 to 42 weeks (controls)). AF was analyzed for cytokines (interleukin (IL)-1ß, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, IL-12, IL-13 and IL-15, interferon-γ, tumor necrosis factor-α), matrix metalloproteinases (MMP-1, MMP-2, MMP-3, MMP-8, MMP-9 and MMP-12), and chemokines (complement factor-D/Adipsin, Serpin E1/PAI-1, Adiponectin/Acrp30, C-Reactive Protein, CCL2/MCP-1, Leptin, Resistin) using multiplex immunoassay kits. The association between AF protein levels and subsequent early preterm birth were examined. RESULT A total of 96 sets of twins were enrolled, including 17 early preterm birth cases and 79 term controls. AF concentrations of IL-6, IL-8, MMP-3, MMP-8 and MMP-9, and CCL2/MCP-1 were significantly higher in cases than controls. Among these analytes, the combination of AF IL-8 and MMP-9 values had the highest predictive value for early preterm birth. The risk was 8% (10/132) for IL-8<1200 pg ml(-1) and MMP-9<1000 pg ml(-1), 30% (15/50) for IL-8>1200 pg ml(-1) or MMP-9>1000 pg ml(-1), and 90% (9/10) for IL-8>1200 pg ml(-1) and MMP-9>1000 pg ml(-1) (P<0.001). CONCLUSION High concentrations of IL-8 and MMP-9 in mid-trimester AF in twins predicted well the risk of early preterm birth.
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Affiliation(s)
- S M Lee
- 1] Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea [2] Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - J S Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - E R Norwitz
- Department of Obstetrics and Gynecology, Tufts University School of Medicine, Boston, MA, USA
| | - S Oh
- Department of Biostatistics, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - E J Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - S M Kim
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - J Lee
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - B J Kim
- 1] Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea [2] Department of Obstetrics and Gynecology, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - C-W Park
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
| | - J K Jun
- Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea
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Abstract
Many medical devices, such as pulse oximetry, ventilation masks and other splints are put on critically ill patients. Although these devices are designed to deliver relatively low physical pressure to the skin of the patient, they can still cause pressure ulcers (PUs) in critically ill patients. There are reports of medical device-related PUs on the face. Here we describe forehead skin necrosis caused by the securing helmet for the Sengstaken-Blakemore tube. It is difficult to detect this kind of PU early, because most of the patients have decreased mental status or delirium due to varix bleeding. For this reason, medical staff should be aware of the risk of developing a PU by the device and take preventive measures accordingly.
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Affiliation(s)
- S M Kim
- The Catholic University of Korea, Bucheon St. Mary's Hospital
| | - R K Ju
- The Catholic University of Korea, Bucheon St. Mary's Hospital
| | - J H Lee
- The Catholic University of Korea, Bucheon St. Mary's Hospital
| | - Y J Jun
- The Catholic University of Korea, Bucheon St. Mary's Hospital
| | - Y J Kim
- The Catholic University of Korea, Bucheon St. Mary's Hospital
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Choi HY, Kim SM, Jang M, Yun BL, Ahn HS, Park SY, Kim SW, Kang EY. Nodular Fasciitis of the Breast: A Case and Literature Review. Ultraschall Med 2015; 36:290-291. [PMID: 24854130 DOI: 10.1055/s-0034-1366340] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Nodular fasciitis is a benign fibroblastic proliferation in soft tissue that is most commonly found in the upper extremities, trunk, head, and neck region. Its occurrence in the breast has been rarely reported. The most characteristic features are the sudden appearance and rapid growth of a palpable lesion. Nodular fasciitis can clinically, radiologically, and histopathologically mimic a breast carcinoma. We present a case of nodular fasciitis of the breast and a review of the relevant literature.
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Lee SH, Kim SM, Jang M, Yun BL, Kang E, Kim SW, Park SY, Ahn HS, Chang JH, Yoo Y, Song TK, Moon WK. Role of second-look ultrasound examinations for MR-detected lesions in patients with breast cancer. Ultraschall Med 2015; 36:140-148. [PMID: 25750138 DOI: 10.1055/s-0034-1399143] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
PURPOSE To assess the clinical value of second-look ultrasound (US) examination for the evaluation of additional enhancing lesions detected on magnetic resonance (MR) imaging. MATERIALS AND METHODS Between May 2008 and February 2011, 794 consecutive patients with histologically confirmed breast cancer underwent breast MR imaging. We included 101 patients with 132 additional enhancing breast lesions detected on MR imaging who underwent second-look US. The imaging features and lesion category according to the Breast Imaging and Reporting and Data System (BI-RADS) were assessed with MR and US imaging, respectively. RESULTS According to the BI-RADS system, 67 lesions (50.8 %) were classified as category 0, 33 lesions (25.0 %) as category 3, and 32 lesions (24.2 %) as category 4. Of the 67 indeterminate lesions on MR imaging, 34 (50.7 %) were demonstrated on second-look US. 11 of these 34 lesions showed suspicious sonographic features, including 1 lesion that showed malignancy (9.1 %, 1/11). Most of the suspicious lesions on MR imaging (26 of 32 BI-RADS category 4 lesions, 81.3 %) were demonstrated on second-look US, and 17 were malignant (65.4 %, 17/26). Of the 6 BI-RADS category 4 lesions without sonographic correlation, 1 was malignant (16.7 %, 1/6). CONCLUSION Second-look US examination was useful for evaluating MR-detected lesions in patients with breast cancer.
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MESH Headings
- Adult
- Aged
- Biopsy, Large-Core Needle
- Breast/pathology
- Breast Neoplasms/classification
- Breast Neoplasms/diagnosis
- Breast Neoplasms/pathology
- Carcinoma, Ductal, Breast/classification
- Carcinoma, Ductal, Breast/diagnosis
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Intraductal, Noninfiltrating/classification
- Carcinoma, Intraductal, Noninfiltrating/diagnosis
- Carcinoma, Intraductal, Noninfiltrating/pathology
- Carcinoma, Lobular/classification
- Carcinoma, Lobular/diagnosis
- Carcinoma, Lobular/pathology
- Female
- Humans
- Image Interpretation, Computer-Assisted
- Imaging, Three-Dimensional
- Magnetic Resonance Imaging
- Middle Aged
- Neoplasm Invasiveness/diagnosis
- Neoplasm Invasiveness/pathology
- Neoplasms, Multiple Primary/classification
- Neoplasms, Multiple Primary/diagnosis
- Neoplasms, Multiple Primary/pathology
- Retrospective Studies
- Sensitivity and Specificity
- Ultrasonography, Interventional
- Ultrasonography, Mammary
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Affiliation(s)
- S H Lee
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea, Republic of
| | - S M Kim
- Radiology, Seoul National University Bundang Hosipital, Seongnam, Korea, Republic of
| | - M Jang
- Radiology, Seoul National University Bundang Hosipital, Seongnam, Korea, Republic of
| | - B L Yun
- Radiology, Seoul National University Bundang Hosipital, Seongnam, Korea, Republic of
| | - E Kang
- Surgery, Seoul National University Bundang Hospital, Seongnam-si, Korea, Republic of
| | - S W Kim
- Surgery, Seoul National University Bundang Hospital, Seongnam-si, Korea, Republic of
| | - S Y Park
- Pathology, Seoul National University Bundang Hospital, Seongnam-si, Korea, Republic of
| | - H S Ahn
- Radiology, Chung-Ang University Hospital, Seoul, Korea, Republic of
| | - J H Chang
- Department of Electronic Engineering, Sogang University, Seoul, Korea, Republic of
| | - Y Yoo
- Department of Electronic Engineering, Sogang University, Seoul, Korea, Republic of
| | - T K Song
- Department of Electronic Engineering, Sogang University, Seoul, Korea, Republic of
| | - W K Moon
- Department of Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea, Republic of
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Marín AG, Núñez CG, Rodríguez P, Shen G, Kim SM, Kung P, Piqueras J, Pau JL. Continuous-flow system and monitoring tools for the dielectrophoretic integration of nanowires in light sensor arrays. Nanotechnology 2015; 26:115502. [PMID: 25721912 DOI: 10.1088/0957-4484/26/11/115502] [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] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Although nanowires (NWs) may improve the performance of many optoelectronic devices such as light emitters and photodetectors, the mass commercialization of these devices is limited by the difficult task of finding reliable and reproducible methods to integrate the NWs on foreign substrates. This work shows the fabrication of zinc oxide NWs photodetectors on conventional glass using transparent conductive electrodes to effectively integrate the NWs at specific locations by dielectrophoresis (DEP). The paper describes the careful preparation of NW dispersions by sedimentation and the dielectrophoretic alignment of NWs in a home-made system. This system includes an impedance technique for the assessment of the alignment quality in real time. Following this procedure, ultraviolet photodetectors based on the electrical contacts formed by the DEP process on the transparent electrodes are fabricated. This cost-effective mean of contacting NWs enables front-and back-illumination operation modes, the latter eliminating shadowing effects caused by the deposition of metals. The electro-optical characterization of the devices shows uniform responsivities in the order of 106 A W(-1) below 390 nm under both modes, as well as, time responses of a few seconds.
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Carinci F, Van Gool K, Mainz J, Veillard J, Pichora EC, Januel JM, Arispe I, Kim SM, Klazinga NS. Towards actionable international comparisons of health system performance: expert revision of the OECD framework and quality indicators. Int J Qual Health Care 2015; 27:137-46. [PMID: 25758443 DOI: 10.1093/intqhc/mzv004] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/08/2015] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To review and update the conceptual framework, indicator content and research priorities of the Organisation for Economic Cooperation and Development's (OECD) Health Care Quality Indicators (HCQI) project, after a decade of collaborative work. DESIGN A structured assessment was carried out using a modified Delphi approach, followed by a consensus meeting, to assess the suite of HCQI for international comparisons, agree on revisions to the original framework and set priorities for research and development. SETTING International group of countries participating to OECD projects. PARTICIPANTS Members of the OECD HCQI expert group. RESULTS A reference matrix, based on a revised performance framework, was used to map and assess all seventy HCQI routinely calculated by the OECD expert group. A total of 21 indicators were agreed to be excluded, due to the following concerns: (i) relevance, (ii) international comparability, particularly where heterogeneous coding practices might induce bias, (iii) feasibility, when the number of countries able to report was limited and the added value did not justify sustained effort and (iv) actionability, for indicators that were unlikely to improve on the basis of targeted policy interventions. CONCLUSIONS The revised OECD framework for HCQI represents a new milestone of a long-standing international collaboration among a group of countries committed to building common ground for performance measurement. The expert group believes that the continuation of this work is paramount to provide decision makers with a validated toolbox to directly act on quality improvement strategies.
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Affiliation(s)
- F Carinci
- National Agency for Regional Health Services (AGENAS), Rome, Italy University of Surrey, Guildford, United Kingdom
| | - K Van Gool
- Organisation for Economic Cooperation and Development (OECD), Paris, France Centre for Health Economics Research and Evaluation, University of Technology, Sydney, NSW, Australia
| | - J Mainz
- University of Southern Denmark, Odense, Denmark
| | - J Veillard
- Canadian Institute for Health Information (CIHI), Toronto, Canada
| | - E C Pichora
- Canadian Institute for Health Information (CIHI), Toronto, Canada
| | - J M Januel
- University of Lausanne, Lausanne, Switzerland
| | - I Arispe
- National Center for Health Statistics, Washington, DC, USA
| | - S M Kim
- Health Insurance Review and Assessment Service, Seoul, Korea
| | - N S Klazinga
- Organisation for Economic Cooperation and Development (OECD), Paris, France
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Lim AY, Lee GY, Jang SY, Gwag HB, Choi SH, Jeon ES, Cha HS, Sung K, Kim YW, Kim SM, Choe YH, Kim DK. Gender differences in clinical and angiographic findings of patients with Takayasu arteritis. Clin Exp Rheumatol 2015; 33:S-132-7. [PMID: 26016764] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 05/04/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVES Because Takayasu arteritis (TA) predominantly affects females, few data regarding gender differences have been reported. The aim of the present study is to describe clinical features and angiographic findings of patients with TA according to gender. METHODS According to the 1990 American College of Rheumatology criteria, 294 patients were diagnosed with TA between September 1994 and April 2014 at a single tertiary hospital. We reviewed clinical, laboratory, and radiologic data at the time of diagnosis. RESULTS Among the 294 patients studied, 257 (87.4%) were female (male:female ratio=1:6.9). Female patients had a higher tendency to exhibit blood pressure differences between arms (p=0.595) and a weak pulse at the brachial artery (p=0.063). In male patients, we observed higher serum creatinine levels (p=0.038) and hypertension more frequently (p=0.061) than in females. Females exhibited more common lesions in the thoracic aorta and its branches, while males had more frequent lesions in the abdominal aorta and its branches. An analysis of angiographic classification according to the International TA Conference in Tokyo 1994 classification revealed that male patients had a higher incidence of type IV and females showed a higher incidence of types I, IIa, and IIb. CONCLUSIONS Female patients with TA have more frequent involvement of the thoracic aorta and its branches, whereas involvement of the abdominal aorta and its branches is more common in males. Considering these gender-specific differences, adjustment of diagnostic criteria for TA according to gender may be necessary.
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Affiliation(s)
- A Y Lim
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - G Y Lee
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S Y Jang
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H B Gwag
- Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S H Choi
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - E-S Jeon
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - H-S Cha
- Division of Rheumatology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - K Sung
- Department of Thoracic and Cardiovascular Surgery, Vascular Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y-W Kim
- Division of Vascular Surgery, Department of Surgery, Vascular Center, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - S M Kim
- Department of Radiology and Center for Imaging Science, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Y H Choe
- Department of Radiology and Center for Imaging Science, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - D-K Kim
- Division of Cardiology, Department of Medicine, Vascular Center, Heart Center, Center for Cardiovascular and Stroke Imaging, Heart Vascular Stroke Institute, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
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50
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Lim SY, Kim YH, Kim CH, Cho MK, Kim JW, Kang WD, Kim SM, Cho HY, Ahn KY, Lee KH, Song TB. The effect of a Foley catheter balloon on cervical ripening. J OBSTET GYNAECOL 2014; 33:830-8. [PMID: 24219725 DOI: 10.3109/01443615.2013.831043] [Citation(s) in RCA: 13] [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: 11/13/2022]
Abstract
The Foley catheter balloon may affect cervical ripening through changes in biochemical mediators by immunoassay and immunohistochemistry, when it is used for pre-induction cervical ripening. The aim of the study was to evaluate the changes in the biochemical mediators from the extra-amniotic space and immunohistochemistry in ripened cervical tissue after the insertion of a Foley catheter balloon (FCB) for pre-induction cervical ripening. A total of 18 pregnant women with a Bishop's score < 6, who were undergoing labour induction, were evaluated in this prospective study. The FCB was irrigated with 10 ml of phosphate buffered saline and the irrigant was collected 0, 2, 4 and 8 h after placement of the FCB or until spontaneous expulsion of the FCB occurred. Irrigant specimens were also collected from 10 spontaneous labouring (SL) women in the active phase of labour. The levels of interleukin (IL)-6, IL-8, matrix metalloproteinase (MMP)-8 and NO were measured. Cervical specimens were obtained from 12 women, including four undergoing induction; four SL and four non-pregnant (NP) women. Immunohistochemical staining was performed to localise hyaluronic acid synthase (HAS)-1, IL-6, IL-8, MMP-8, endothelial nitric oxide synthase (eNOS) and inducible NOS (iNOS). Results showed that the levels of IL-6, IL-8, and MMP-8 significantly increased over time in FCB group (p < 0.01). In the immunohistochemical analysis of cervical tissues, immunoreactivity of HAS-1 in the after FCB group was stronger than any of the other groups. The protein expressions of IL-6, IL-8, MMP-8, eNOS and iNOS were more prominent in the after FCB and SL groups than in the NP and the before FCB groups. iNOS was only observed in the after FCB and SL groups. It was concluded that FCB may affect cervical ripening through changes in biochemical mediators by immunoassay and immunohistochemistry, when it is used for pre-induction cervical ripening.
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Affiliation(s)
- S Y Lim
- Department of Obstetrics and Gynecology, Gachon University Gil Medical Center , Incheon
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