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Lee JI, Choi JH, Kwon TW, Jo HS, Kim DG, Ko SG, Song GJ, Cho IH. Neuroprotective effects of bornyl acetate on experimental autoimmune encephalomyelitis via anti-inflammatory effects and maintaining blood-brain-barrier integrity. Phytomedicine 2023; 112:154569. [PMID: 36842217 DOI: 10.1016/j.phymed.2022.154569] [Citation(s) in RCA: 3] [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] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 09/05/2022] [Accepted: 11/19/2022] [Indexed: 06/18/2023]
Abstract
BACKGROUND Bornyl acetate (BA), a chemical component of essential oil in the Pinus family, has yet to be actively studies in terms of its therapeutic effect on numerous diseases, including autoimmune diseases. PURPOSE This study aimed to investigate the pharmacological effects and molecular mechanisms of BA on myelin oligodendrocyte glycoprotein (MOG35-55)-induced experimental autoimmune encephalomyelitis (EAE) mice in an animal model of multiple sclerosis (MS), a representative autoimmune disease in central nervous system. METHODS BA (100, 200, or 400 mg/kg) was orally treated to EAE mice once daily for 30 days after immunization for the behavioral test and for the 16th-18th days for the histopathological and molecular analyses, from the onset stage (8th day) of EAE symptoms. RESULTS BA mitigated behavioral dysfunction (motor disability) and demyelination in the spinal cord that were associated with the down-regulation of representative pro-inflammatory cytokines (interleukin (IL)-1 beta, IL-6, and tumor necrosis factor-alpha), enzymes (cyclooxygenase-2 and inducible nitric oxide synthase), and chemokines (monocyte chemotactic protein-1, macrophage inflammatory protein-1 alpha, and regulated on activation), and decreased infiltration of microglia (CD11b+/CD45+(low)) and macrophages (CD11b+/CD45+(high)). The anti-inflammatory effect of BA was related to the inhibition of mitogen-activated protein kinases and nuclear factor-kappa B pathways. BA also reduced the recruitment/infiltration rates of CD4+ T, Th1, and Th17 cells into the spinal cords of EAE mice, which was related to reduced blood-spinal cord barrier (BSCB) disruption. CONCLUSION These findings strongly suggest that BA may alleviate EAE due to its anti-inflammatory and BSCB protective activities. This indicates that BA is a potential therapeutic agent for treating autoimmune demyelinating diseases including MS.
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Affiliation(s)
- Joon-Il Lee
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Jong-Hee Choi
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Tae-Woo Kwon
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Hyo-Sung Jo
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Do-Geun Kim
- Dementia Research Group, Korea Brain Research Institute, Daegu 41068, Republic of Korea
| | - Seong-Gyu Ko
- Korean Medicine-based Drug Repositioning Cancer Research Center, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Gyun Jee Song
- Department of Medical Science, Catholic Kwandong University College of Medicine, Gangneung, Gangwon-do 25601, Republic of Korea
| | - Ik-Hyun Cho
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea; Department of Science in Korean Medicine, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea; Institute of Convergence Korean Medicine, Kyung Hee University, Seoul 02447, Republic of Korea.
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Cho EJ, Kang MR, Kim JH, Lee JI, Son ES, Park CH, Aung WW, Lee JS. Evaluation of the MolecuTech ® REBA MTB-XMDR kit for detection of pre-extensively drug-resistant TB. Int J Tuberc Lung Dis 2022; 26:869-874. [PMID: 35996285 DOI: 10.5588/ijtld.21.0606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND: Rapid diagnosis of drug-resistant TB is critical for early initiation of effective therapy. YD Diagnostics in South Korea recently developed the MolecuTech® REBA MTB-XMDR test to rapidly detect multidrug-resistant TB (MDR-TB), pre-extensively drug-resistant TB (pre-XDR-TB) and resistance to second-line injectable drugs (SLIDs) simultaneously using a fully automated test platform. This study aimed to evaluate the MolecuTech® test for the detection of MDR- and pre-XDR-TB, as well as SLID resistance.METHODS: A total of 151 clinical Mycobacterium tuberculosis isolates from South Korea were tested using the MolecuTech test, and the results were analysed by comparing these with phenotypic drug susceptibility testing (pDST) and sequencing.RESULTS: Compared to pDST, the MolecuTech test showed a sensitivity and specificity of respectively 97.7% and 100.0% for rifampicin (RIF), 82.4% and 100.0% for isoniazid (INH), 97.5% and 97.2% for fluoroquinolones (FQs), and 94.0% and 98.8% for SLIDs. Concordances with the sequencing results of each resistance determinant were 99.3% for RIF, 96.7% for INH, 98.7% for FQs and 99.3% for SLIDs.CONCLUSION: The MolecuTech test is an efficient and reliable rapid molecular diagnostic tool for the simultaneous screening of MDR- and pre-XDR-TB.
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Affiliation(s)
- E J Cho
- International Tuberculosis Research Center, Gyeongsangnam-do, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea
| | - M R Kang
- YD Diagnostics, Gyeonggi-do, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea
| | - J H Kim
- YD Diagnostics, Gyeonggi-do, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea, Department of Clinical Laboratory Science, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea
| | - J I Lee
- International Tuberculosis Research Center, Gyeongsangnam-do, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea
| | - E S Son
- International Tuberculosis Research Center, Gyeongsangnam-do, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea
| | - C H Park
- YD Diagnostics, Gyeonggi-do, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea, College of Pharmacy, Dongguk University, Seoul, Republic of Korea
| | - W W Aung
- Advanced Molecular Research Centre, Department of Medical Research, Yangon, Myanmar
| | - J S Lee
- International Tuberculosis Research Center, Gyeongsangnam-do, College of Health Sciences, Catholic University of Pusan, Busan, Republic of Korea
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Lee JI, Park KS, Cho IH. Panax ginseng: a candidate herbal medicine for autoimmune disease. J Ginseng Res 2019; 43:342-348. [PMID: 31308804 PMCID: PMC6606836 DOI: 10.1016/j.jgr.2018.10.002] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Revised: 10/04/2018] [Accepted: 10/12/2018] [Indexed: 12/21/2022] Open
Abstract
Panax ginseng Meyer (P. ginseng; Korean ginseng) is well known for its medicinal properties. It can alleviate pathological symptoms, promote health, and prevent potential diseases via its anti-inflammatory, antioxidant, homeostatic, and other positive effects on biological metabolism. Although many studies have determined effects of P. ginseng on various diseases, such as cardiovascular, neurological, and immunological diseases, little is known about the effect of P. ginseng on autoimmune diseases. Here, we review a few reports about effects of P. ginseng on autoimmune diseases (e.g., multiple sclerosis, Crohn's disease, ulcerative colitis, atopic dermatitis, and rheumatoid arthritis) and suggest the possibility of P. ginseng as a candidate herbal medicine to prevent and treat autoimmune diseases as well as the need to study it.
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Affiliation(s)
- Joon-Il Lee
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, Republic of Korea
| | - Kyoung Sun Park
- Department of Korean Medicine Obstetrics & Gynecology, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Ik-Hyun Cho
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, Republic of Korea
- Department of Convergence Medical Science and Institute of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, Republic of Korea
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Choi JH, Jang M, Lee JI, Chung WS, Cho IH. Neuroprotective Effects of a Traditional Multi-Herbal Medicine Kyung-Ok-Ko in an Animal Model of Parkinson's Disease: Inhibition of MAPKs and NF-κB Pathways and Activation of Keap1-Nrf2 Pathway. Front Pharmacol 2018; 9:1444. [PMID: 30618742 PMCID: PMC6300575 DOI: 10.3389/fphar.2018.01444] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 11/22/2018] [Indexed: 11/13/2022] Open
Abstract
Kyung-Ok-Ko (KOK), a traditional multi-herbal medicine, has been widely used in Oriental medicine as a restorative that can enforce vitality of whole organs and as a medicine that can treat age-related symptoms including lack of vigor and weakened immunity. However, the beneficial effect of KOK on neurological diseases such as Parkinson's diseases (PD) is largely unknown. Thus, the objective of this study was to examine the protective effect of KOK on neurotoxicity in 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-induced mouse model of PD. Pre-treatment with KOK at 1 or 2 g/kg/day (p.o.) showed significant mitigating effects on neurological dysfunction (motor and welfare) based on pole, rotarod, and nest building tests. It also showed effects on survival rate. These positive effects of KOK were related to inhibition of loss of tyrosine hydroxylase-positive neurons, reduction of MitoSOX activity, increased apoptotic cells, microglia activation, and upregulation of inflammatory factors [interleukin (IL)-1β, IL-6, cyclooxygenase-2, and inducible nitric oxide], and reduced blood-brain barrier (BBB) disruption in the substantia nigra pars compacta (SNpc) and/or striatum after MPTP intoxication. Interestingly, these effects of KOK against MPTP neurotoxicity were associated with inhibition of phosphorylation of mitogen-activated protein kinases and nuclear factor-kappa B signaling pathways along with up-regulation of nuclear factor erythroid 2-related factor 2 pathways in SNpc and/or striatum. Collectively, our findings suggest that KOK might be able to mitigate neurotoxicity in MPTP-induced mouse model of PD via multi-effects, including anti-neuronal and anti-BBB disruption activities through its anti-inflammatory and anti-oxidative activities. Therefore, KOK might have potential for preventing and/or treating PD.
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Affiliation(s)
- Jong Hee Choi
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, South Korea.,Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Minhee Jang
- Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Joon-Il Lee
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, South Korea.,Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Won-Seok Chung
- Department of Korean Rehabilitation Medicine, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
| | - Ik-Hyun Cho
- Department of Science in Korean Medicine and Brain Korea 21 Plus Program, Graduate School, Kyung Hee University, Seoul, South Korea.,Department of Convergence Medical Science, College of Korean Medicine, Kyung Hee University, Seoul, South Korea.,Institute of Korean Medicine, College of Korean Medicine, Kyung Hee University, Seoul, South Korea
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Jung HJ, Ahn JY, Lee JI, Bae JY, Kim HL, Suh HY, Youn JI, Park MY. Analysis of the number of enlarged pores according to site, age, and sex. Skin Res Technol 2018; 24:367-370. [PMID: 29393550 DOI: 10.1111/srt.12438] [Citation(s) in RCA: 5] [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] [Accepted: 01/01/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Increasing the number of enlarged pores causes cosmetic problems. The difference in the number of enlarged pores according to facial site, age, and sex is unclear. OBJECTIVE To analyze the distribution of the number of enlarged pores according to facial site, age, and sex. METHODS AND MATERIALS We analyzed the number of the enlarged pores and the percentage of wrinkles in the nose, forehead, and cheek from 434 polarized images. The measurement results were analyzed according to site, age, and sex. Relationship between enlarged pore counts and wrinkle severity was also analyzed. The study was conducted by using DermaVision,™ which can take cross-polarization, parallel polarization, and ultraviolet light images. RESULTS The enlarged pores of the nose and forehead were more prominent than in the cheeks. Pore counts were increased with age, and the increment was significant between the 30's and 40's. There was no significant difference by gender. Enlarged pore counts were related to wrinkle severity. CONCLUSIONS The number of enlarged pores differs depending on body site and increased with age. The enlarged pore counts correlate with wrinkle severity and the correlation varies depending on the body site.
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Affiliation(s)
- H J Jung
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - J Y Ahn
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - J I Lee
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - J Y Bae
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - H L Kim
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - H Y Suh
- Department of Dermatology, National Medical Center, Seoul, Korea
| | - J I Youn
- Inshine Dermatology Clinic, Seoul, Korea
| | - M Y Park
- Department of Dermatology, National Medical Center, Seoul, Korea
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Lee JI, Bae JS, Min BS, Na MK. Antithrombotic and antiplatelet activities of indole alkaloids isolated from the edible insect Protaetia brevitarsis seulensis (Kolbe). Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- JI Lee
- College of Pharmacy, Chungnam National University, Daejeon, Korea, Republic of (South)
| | - JS Bae
- College of Pharmacy, CMRI, Research Institute of Pharmaceutical Sciences, BK21 Plus KNU Multi-Omics based Creative Drug Research Team Kyungpook National University, Daegu, Korea, Republic of (South)
| | - BS Min
- College of pharmacy, Catholic University of Daegu, Daegu, Korea, Republic of (South)
| | - MK Na
- College of Pharmacy, Chungnam National University, Daejeon, Korea, Republic of (South)
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7
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Lee JI, Yoon RG, Lee JH, Park JW, Yoo MH, Ahn JH, Chung JW, Park HJ. Prognostic Value of Labyrinthine 3D-FLAIR Abnormalities in Idiopathic Sudden Sensorineural Hearing Loss. AJNR Am J Neuroradiol 2016; 37:2317-2322. [PMID: 27516239 DOI: 10.3174/ajnr.a4901] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 06/16/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE According to recent research, modern MR imaging can detect the presense of abnormalities on labyrinthine. Our aim was to report the patterns and prognostic role of abnormal findings on labyrinthine imaging in patients with sudden sensorineural hearing loss. MATERIALS AND METHODS This study comprised 113 patients who were diagnosed with unilateral sudden sensorineural hearing loss and underwent 3T MR imaging, including pre-/postcontrast 3D fluid-attenuated inversion recovery and T1-weighted imaging. We analyzed abnormalities on MR imaging and correlated them with audiometric results. RESULTS Thirty-one (27%) patients showed abnormal findings on labyrinthine MR imaging in the affected ear. The initial/final hearing levels of the MRI+ group (91 ± 25/73 ± 27 dB hearing loss) were significantly worse than those of the MRI- group (69 ± 30/48 ± 24 dB hearing loss). The incidence of abnormalities on labyrinthine MR imaging was significantly lower (3 of 40, 8%) in 40 patients with initial mild-to-moderate hearing loss than in those with profound hearing loss (16 of 34, 47%). Considering hearing improvement by the Siegel criteria, the rate of complete or partial recovery was significantly higher in the MRI- group (34%) than in the MRI+ group (10%). In patients with initial severe or profound hearing loss, the MRI- group showed greater hearing improvement (38 ± 21 dB) than the MRI+ group (23 ± 22 dB). CONCLUSIONS Abnormalities on labyrinthine MR imaging were found in 27% of patients with sudden sensorineural hearing loss. The initial hearing loss was worse in the MRI+ group than in the MRI- group. In patients with initial severe and profound hearing loss, the presence of abnormalities on labyrinthine MR imaging indicated a poor prognosis.
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Affiliation(s)
- J I Lee
- From the Departments of Otolaryngology (J.I.L., J.W.P., J.H.A., J.W.C., H.J.P.)
| | - R G Yoon
- Department of Radiology (R.G.Y.), Catholic Kwandong University International St. Mary's Hospital, Catholic Kwandong University College of Medicine, Incheon, Korea
| | - J H Lee
- Radiology (J.H.L.), Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - J W Park
- From the Departments of Otolaryngology (J.I.L., J.W.P., J.H.A., J.W.C., H.J.P.)
| | - M H Yoo
- Department of Otolaryngology (M.H.Y.), College of Medicine, Kyungpook National University, Daegu, Korea
| | - J H Ahn
- From the Departments of Otolaryngology (J.I.L., J.W.P., J.H.A., J.W.C., H.J.P.)
| | - J W Chung
- From the Departments of Otolaryngology (J.I.L., J.W.P., J.H.A., J.W.C., H.J.P.)
| | - H J Park
- From the Departments of Otolaryngology (J.I.L., J.W.P., J.H.A., J.W.C., H.J.P.)
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Lee JI, Balolong E, Han Y, Lee S. Stem cells for cartilage repair: what exactly were used for treatment, cultured adipose-derived stem cells or the unexpanded stromal vascular fraction? Osteoarthritis Cartilage 2016; 24:1302-3. [PMID: 26946247 DOI: 10.1016/j.joca.2016.01.990] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 01/10/2016] [Indexed: 02/02/2023]
Affiliation(s)
- J I Lee
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Republic of Korea; Department of Veterinary Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea.
| | - E Balolong
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Republic of Korea
| | - Y Han
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Republic of Korea
| | - S Lee
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology, Konkuk University, Seoul, Republic of Korea.
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Affiliation(s)
- J W Park
- Department of Orthopaedic Surgery, Korea University Ansan Hospital, Ansan, Korea
| | - K H Lee
- Department of Orthopaedic Surgery, Hanyang University Seoul Hospital, Seoul, Korea
| | - J I Lee
- Department of Orthopaedic Surgery, Hanyang University Guri Hospital, Guri, Korea
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Pradhan AS, Lee JI, Kim JL. On the scenario of passive dosimeters in personnel monitoring: Relevance to diagnostic radiology and fluoroscopy-based interventional cardiology. J Med Phys 2016; 41:81-4. [PMID: 27217618 PMCID: PMC4871007 DOI: 10.4103/0971-6203.181634] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- A S Pradhan
- Radiation Dosimetry Team, Korea Atomic Energy Research Institute, Yuseong, Daejeon, Republic of Korea
| | - J I Lee
- Radiation Dosimetry Team, Korea Atomic Energy Research Institute, Yuseong, Daejeon, Republic of Korea
| | - J L Kim
- Radiation Dosimetry Team, Korea Atomic Energy Research Institute, Yuseong, Daejeon, Republic of Korea
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Lee KM, Kim H, Nemeno JG, Yang W, Yoon J, Lee S, Lee JI. Natural cardiac extracellular matrix sheet as a biomaterial for cardiomyocyte transplantation. Transplant Proc 2015; 47:751-6. [PMID: 25891725 DOI: 10.1016/j.transproceed.2014.12.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 12/31/2014] [Indexed: 11/26/2022]
Abstract
Cardiovascular diseases associated with myocardial infarction are among the major causes of death worldwide due to the limited regenerative capacity of cardiac tissues. Although various approaches, such as biosynthetic biomaterials, have been developed to promote postinfarction cardiac regeneration, a number of limitations, including the immune complications caused by biodegradation of these scaffolds and insufficient cell migration, need to be overcome prior to their clinical application. Hence, the development of natural biomaterials to support myocardial regeneration is crucial. Here, we investigated the effects of a natural biomaterial, cardiac extracellular matrix (ECM) on the proliferation and maintenance of cardiomyocytes in order to assess its suitability for cardiomyocyte expansion. The ECM components not only provide mechanical support, but also induce and preserve the required phenotypic and functional characteristics of the cells. We prepared ECM sheets from decellularized cardiac sections. Cardiomyocytes were then cultured with and without these cardiac ECM sheets. We compared the proliferation rates and phenotypes, and cardiac gene and protein expression, of the cultured cardiomyocytes by automatic cell counting and the MTT assay, microscopy, and RT-PCR and western blotting, respectively. The cardiomyocytes cultured with the natural cardiac ECM sheets exhibited higher proliferation rates and cardiac gene and protein expression than those cultured without the ECM sheets. Our results demonstrate that the ECM sheets are suitable for use in cardiomyocyte transplantation and can provide a novel in vitro model for investigating cell and ECM interactions. We hypothesize that these ECM sheets can be used in the future to improve cardiac transplantation strategies.
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Affiliation(s)
- K M Lee
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - H Kim
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - J G Nemeno
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - W Yang
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - J Yoon
- IT Design Fusion Program, Graduate School Of NID Fusion Technology, Seoul National University of Science and Technology, Seoul, Republic of Korea
| | - S Lee
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - J I Lee
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Seoul, Republic of Korea; Department of Veterinary Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea.
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Mizuno M, Takebe T, Kobayashi S, Kimura S, Masutani M, Lee S, Jo YH, Lee JI, Taniguchi H. Elastic cartilage reconstruction by transplantation of cultured hyaline cartilage-derived chondrocytes. Transplant Proc 2015; 46:1217-21. [PMID: 24815164 DOI: 10.1016/j.transproceed.2013.12.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2013] [Revised: 11/23/2013] [Accepted: 12/10/2013] [Indexed: 11/18/2022]
Abstract
Current surgical intervention of craniofacial defects caused by injuries or abnormalities uses reconstructive materials, such as autologous cartilage grafts. Transplantation of autologous tissues, however, places a significant invasiveness on patients, and many efforts have been made for establishing an alternative graft. Recently, we and others have shown the potential use of reconstructed elastic cartilage from ear-derived chondrocytes or progenitors with the unique elastic properties. Here, we examined the differentiation potential of canine joint cartilage-derived chondrocytes into elastic cartilage for expanding the cell sources, such as hyaline cartilage. Articular chondrocytes are isolated from canine joint, cultivated, and compared regarding characteristic differences with auricular chondrocytes, including proliferation rates, gene expression, extracellular matrix production, and cartilage reconstruction capability after transplantation. Canine articular chondrocytes proliferated less robustly than auricular chondrocytes, but there was no significant difference in the amount of sulfated glycosaminoglycan produced from redifferentiated chondrocytes. Furthermore, in vitro expanded and redifferentiated articular chondrocytes have been shown to reconstruct elastic cartilage on transplantation that has histologic characteristics distinct from hyaline cartilage. Taken together, cultured hyaline cartilage-derived chondrocytes are a possible cell source for elastic cartilage reconstruction.
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Affiliation(s)
- M Mizuno
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - T Takebe
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Project Leader of Advanced Medical Research Center, Yokohama City University, Yokohama, Japan; PRESTO, Japan Science and Technology Agency, Kawaguchi, Japan
| | - S Kobayashi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Plastic and Reconstructive Surgery, Kanagawa Children's Medical Center, Yokohama, Japan
| | - S Kimura
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - M Masutani
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - S Lee
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - Y H Jo
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - J I Lee
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science and Technology (IBST), Konkuk University, Seoul, Republic of Korea
| | - H Taniguchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Project Leader of Advanced Medical Research Center, Yokohama City University, Yokohama, Japan.
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Mizukami K, Yabuki A, Endoh D, Chang HS, Lee KW, Nakayama M, Kushida K, Kohyama M, Lee JI, Yamato O. Investigation of parallel and simultaneous selection for collie eye anomaly and ivermectin toxicosis. Vet Rec 2014; 175:174. [PMID: 24939474 DOI: 10.1136/vr.102015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- K Mizukami
- Laboratory of Clinical Pathology, Department of Veterinary Medicine, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Kohrimoto, Kagoshima 890-0065, Japan
| | - A Yabuki
- Laboratory of Clinical Pathology, Department of Veterinary Medicine, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Kohrimoto, Kagoshima 890-0065, Japan
| | - D Endoh
- Department of Veterinary Radiology, School of Veterinary Medicine, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido 069-8501, Japan
| | - H S Chang
- Laboratory of Clinical Pathology, Department of Veterinary Medicine, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Kohrimoto, Kagoshima 890-0065, Japan
| | - K W Lee
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Kyungpook National University, 80 Daehakro, Bukgu, Daegu 702-701, Korea
| | - M Nakayama
- Nakayama Veterinary Hospital, 6-1 Minamifukuro, Nara, Nara 630-8342, Japan
| | - K Kushida
- Laboratory of Clinical Pathology, Department of Veterinary Medicine, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Kohrimoto, Kagoshima 890-0065, Japan
| | - M Kohyama
- Laboratory of Clinical Pathology, Department of Veterinary Medicine, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Kohrimoto, Kagoshima 890-0065, Japan
| | - J I Lee
- Laboratory of Veterinary Public Health I, College of Veterinary Medicine, Chonnam National University, 300 Yonbongdong, Bukgu, Gwangju 500-757, Korea
| | - O Yamato
- Laboratory of Clinical Pathology, Department of Veterinary Medicine, Joint Faculty of Veterinary Medicine, Kagoshima University, 1-21-24 Kohrimoto, Kagoshima 890-0065, Japan
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Schreiner A, Hargarter L, Hitschfield K, Lee JI, Lenskaya I, Sulaiman AH, Diels J. Clinical effectiveness and resource utilization of paliperidone ER for schizophrenia: Pharmacoepidemiologic International Longitudinal Antipsychotic Registry (PILAR). Curr Med Res Opin 2014; 30:1279-89. [PMID: 24597755 DOI: 10.1185/03007995.2014.898630] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To document prescribing patterns in clinical practice and assess long-term outcomes related to initiation of paliperidone ER and other oral antipsychotics among patients with schizophrenia in a naturalistic setting. RESEARCH DESIGN AND METHODS An international, non-interventional, naturalistic study of adult patients (≥18 years) with schizophrenia. Patients were assigned to the relevant treatment group (paliperidone ER or 'all other oral antipsychotics') after switching to, or initiating, oral antipsychotic treatment. Retrospective 12 month data collection was followed by 12 month prospective data collection, with 3-monthly assessments. The primary endpoint was time to all-cause discontinuation of new medication. Secondary endpoints included Clinical Global Impression-Severity (CGI-S) score, Clinical Global Impression-Schizophrenia (CGI-SCH) score, Personal and Social Performance (PSP) score, health-related quality of life (HR-QoL) and quality of sleep, evaluation of healthcare resource utilization and patient's treatment satisfaction. RESULTS A total of 4051 patients were included in the intent-to-treat (ITT) analysis set. All-cause study discontinuation rates were comparable between the paliperidone ER group (16.8%) and the 'all other oral antipsychotics' group (15.5%). There was no difference in the time to discontinuation of newly initiated antipsychotic treatments between paliperidone ER and 'all other oral antipsychotics' groups. Paliperidone ER was associated with greater improvements from baseline to endpoint in both the PSP scale score (+14.2 vs +13.1, p = 0.041) and the physical component of quality of life (SF-12 Physical scores; +3.9 vs +2.9, p = 0.003) compared to 'all other oral antipsychotics'. Improvements in mean CGI-S score, CGI-SCH score, HR-QoL, quality of sleep and daytime drowsiness, as well as patients' treatment satisfaction were comparable between treatment groups. The incidence of adverse events was comparable between groups. CONCLUSIONS This study provides valuable data on the prescribing habits and treatment outcomes associated with use of paliperidone ER in everyday clinical practice, and supports previous findings of the favorable functional improvement and treatment satisfaction associated with paliperidone ER. CLINICAL TRIAL REGISTRATION NCT00696813; R076477SCH4015 (Register of German Association of Research-based Pharmaceutical Companies [VFA] http://www.vfa.de/de/arzneimittel-forschung/datenbanken-zu-arzneimitteln/nisdb).
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Abstract
WHAT IS KNOWN AND OBJECTIVE Mucopolysaccharidoses (MPSs) are a group of rare inherited metabolic diseases caused by genetic defects in the production of lysosomal enzymes. MPSs are clinically heterogeneous and are characterized by progressive deterioration in visceral, skeletal and neurological functions. This article aims to review the classification and pathophysiology of MPSs and discuss current therapies and new targeted agents under development. METHODS A Medline search through PubMed was performed for relevant articles and treatment guidelines on MPSs published in English for years 1970 to September of 2013 inclusive. The references listed in the identified articles, prescribing information of the drugs approved for the treatment of MPSs, as well as recent clinical trial information posted on Clinicaltrials.gov website, were reviewed. RESULTS AND DISCUSSION Until recently, supportive care was the only option available for the management of MPSs. In the early 2000s, enzyme replacement therapy (ERT) was approved by the United States Food and Drug Administration (FDA) for the treatment of MPS I, II and VI. Clinical trials of ERT showed substantial improvements in patients' somatic symptoms; however, no benefit was found in the neurological symptoms because the enzymes do not readily cross the blood-brain barrier (BBB). Haematopoietic stem cell transplantation (HSCT), another potentially curative treatment, is not routinely advocated in clinical practice due to its high risk profile and lack of evidence for efficacy, except in preserving cognition and prolonging survival in young patients with severe MPS I. In recent years, substrate reduction therapy (SRT) and gene therapy have been rapidly gaining greater recognition as potential therapeutic avenues. WHAT IS NEW AND CONCLUSION Enzyme replacement therapy (ERT) is effective for the treatment of many somatic symptoms, particularly walking ability and respiratory function, and remains the mainstay of MPS treatment. The usefulness of HSCT has not been established adequately for most MPSs. Although still under investigation, SRT and gene therapy are promising MPS treatments that may prevent the neurodegeneration not affected by ERT.
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Affiliation(s)
- H Noh
- Department of Pharmacy, College of Pharmacy, Yonsei University, Incheon, Korea; Yonsei Institute of Pharmaceutical Sciences, College of Pharmacy, Yonsei University, Incheon, Korea
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Ju MK, Jeong JH, Lee JI, Kim YS, Kim MS. Proliferation and functional assessment of pseudo-islets with the use of pancreatic endocrine cells. Transplant Proc 2014; 45:1885-8. [PMID: 23769063 DOI: 10.1016/j.transproceed.2012.12.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2012] [Accepted: 12/31/2012] [Indexed: 11/26/2022]
Abstract
Many obstacles beset islet transplantation, particularly insufficient tissue mass. Previously, we reported production of pseudo-islets. In addition, there have been reports in which coculture with pancreatic islet and bone marrow mesenchymal stem cells (BMSCs) demonstrated positive effects on pancreatic islet function. The purpose of this study was to perform morphologic and functional evaluations of pancreatic pseudo-islets cocultured with BMSCs. Pancreatic endocrine cells (PECs) were collected with a previously reported method; bone marrow was aspirated from the rat femur. Subsequently, PECs and BMSCs cocultured at high density on low-cell-binding culture dishes kept suspended by shaking. The functionality and characteristics of the mixed cell complexes were evaluated by glucose challenge, insulin enzyme-linked immunosorbent assay, reverse-transcription polymerase chain reaction, and immunohistochemistry. Through expansion for 2 weeks in continuous culture passages, ∼1 million PECs were recovered after aggregation. They presented spherical shapes and sizes similar to naïve islets, according to phase-contrast microscopy. The spheroid aggregates of pancreatic islet cells and BMSCs showed fortified functions and maintained viability. In conclusion, PECs served as a cell source for pseudo-islets, which were both morphologically and genetically similar to naïve islets. We also suggest a manufacturing method for mixed cellular complexes from 2 different origins that can improve secretion ability and cell differentiation.
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Affiliation(s)
- M K Ju
- Research Institute for Transplantation, Yonsei University Health System, Seoul, South Korea; Department of Transplantation Surgery, Yonsei University Health System, Seoul, South Korea
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Yeo JE, Nam BM, Yang W, Jo YH, Lee S, Nemeno JG, Kiml BY, Koh YG, Lee JI. Fragmin/protamine microparticle carriers as a drug repositioning strategy for cell transplantation. Transplant Proc 2013; 45:3122-6. [PMID: 24157048 DOI: 10.1016/j.transproceed.2013.08.086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND The importance of drug repositioning has been gaining attention in the last few years, allowing existing pharmaceutical products to be reevaluated for potential alternative therapeutic applications. The purpose of this study was to evaluate the effects of fragmin/protamine microparticles (F/P MPs) on cell aggregates under the concept of drug repositioning. METHODS Mesenchymal stem cells (MSCs) and embryonic rat heart-derived cardiac H9C2 cells were mixed with D-PBS, basal medium, fragmin, protamine, and F/P MPs to manufacture aggregates intended for cell transplantation. To evaluate their adhesive properties as cell carriers, we injected combinations of MSC aggregates into cartilage tissue, observing their leakage from the implantation site. RESULTS Our data demonstrated that MSCs and H9C2 cells mixed with F/P MPs rapidly produced large, viscous cellular aggregates. F/P MPs were bound to the surface of MSCs and H9C2 cells; thus, F/P MPs induced the formation of F/P MP-cell aggregates. Cell aggregates were prevented from leaking from the transplanted site. CONCLUSION Aggregation induced by F/P MPs may improve the efficiency of cell therapy, a novel method for transplantation.
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Affiliation(s)
- J E Yeo
- Regenerative Medicine Laboratory, Center for Stem Cell Research, Department of Biomedical Science and Technology, Institute of Biomedical Science & Technology (IBST), Konkuk University, Hwayang-dong, Gwangjin-gu, Seoul, Republic of Korea; The Center for Stem Cell & Arthritis Research, Department of Orthopedic Surgery, Yonsei Sarang Hospital, Bangbae-dong, Seocho-gu, Seoul 137-060, Republic of Korea
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Kim SI, Kim BH, Chang I, Lee JI, Kim JL, Pradhan AS. Response of six neutron survey meters in mixed fields of fast and thermal neutrons. Radiat Prot Dosimetry 2013; 156:518-524. [PMID: 23620566 DOI: 10.1093/rpd/nct103] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Calibration neutron fields have been developed at KAERI (Korea Atomic Energy Research Institute) to study the responses of commonly used neutron survey meters in the presence of fast neutrons of energy around 10 MeV. The neutron fields were produced by using neutrons from the (241)Am-Be sources held in a graphite pile and a DT neutron generator. The spectral details and the ambient dose equivalent rates of the calibration fields were established, and the responses of six neutron survey meters were evaluated. Four single-moderator-based survey meters exhibited an under-responses ranging from ∼9 to 55 %. DINEUTRUN, commonly used in fields around nuclear reactors, exhibited an over-response by a factor of three in the thermal neutron field and an under-response of ∼85 % in the mixed fields. REM-500 (tissue-equivalent proportional counter) exhibited a response close to 1.0 in the fast neutron fields and an under-response of ∼50 % in the thermal neutron field.
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Affiliation(s)
- S I Kim
- Health Physics Dept., Korea Atomic Energy Research Institute, Daeduk-daero 1045, Yuseong, Daejeon, Korea
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Jeon YB, Park KY, Moon JK, Park CH, Choi CH, Lee JI. Dobutamine induced cardiogenic shock due to systolic anterior motion after mitral valve repair. Anaesth Intensive Care 2013; 41:551-552. [PMID: 23808519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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20
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Kang WG, Choi JH, Jeon EJ, Lee JI, Kim HJ, Kim SK, Kim YD, Lee JH, Ma KJ, Myung SS, So JH. Ultra-low gamma-ray measurement system for neutrinoless double beta decay. Appl Radiat Isot 2013; 81:290-3. [PMID: 23726518 DOI: 10.1016/j.apradiso.2013.03.057] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 03/14/2013] [Indexed: 11/17/2022]
Abstract
An experiment for the detection of 0νβ(+)/EC and 0νEC/EC in 92Mo nuclei has been carried out with a scintillating crystal, CaMoO4, in coincidence with the HPGe detector. We study the background events inside the event selection window for 0ν β(+)/EC decays of CaMoO4 detector. For 51.2 days of data taking period, we didn't observe any event in the neutrinoless EC/EC decay event window. The (92)Mo 0νβ(+)/EC decay half-life limit was set to 0.61×10(20) years with a 90% confidence by method of Feldman and Cousins. This ultra-low gamma ray measurement utilizing coincidence technique can be used for the resonant EC/EC decay process of some nuclei which is potentially important for neutrinoless double beta decay process.
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Affiliation(s)
- W G Kang
- Physics Department, Sejong University, Seoul 143-747, South Korea.
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Lee JI, Jeon WJ, Suh DH, Park JH, Lee JM, Park JW. Reply to Drs Fusetti, Garavaglia and Thébaud. J Hand Surg Eur Vol 2013; 38:577-8. [PMID: 23844419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Lee JI, Jeon WJ, Suh DH, Park JH, Lee JM, Park JW. Anatomical collateral ligament reconstruction in the hand using intraosseous suture anchors and a free tendon graft. J Hand Surg Eur Vol 2012; 37:832-8. [PMID: 22311916 DOI: 10.1177/1753193412436947] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [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: 02/03/2023]
Abstract
We describe anatomical collateral ligament reconstruction using a free tendon graft and intraosseous suture anchors in the digits. Eleven patients who underwent collateral ligament reconstruction at the proximal interphalangeal or metacarpophalangeal joints were enrolled in this study. Proper and accessory collateral ligaments were reconstructed using a free tendon graft in an anatomical configuration and the grafted tendons were fixed with suture anchors. The mean time from surgery to last follow-up was 9.2 months. All anchors used for fixation of grafted tendons remained securely at their original positions at the last follow-up visits. No significant complications were associated with the use of anchors. Clinical results were excellent in 10 patients and good in one. Anatomical reconstruction of collateral ligaments using suture anchors is simpler, faster, and safer than the conventional bone tunnel technique and it does not have the risks of breakage of bone bridges, skin irritation, or graft loosening.
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Affiliation(s)
- J I Lee
- Department of Orthopedic Surgery, College of Medicine, Korea University, Seoul, Korea
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Kim S, Cha JM, Lee CH, Shin HP, Park JJ, Joo KR, Lee JI, Jeun JW, Lim K, Lim JU, Choi JH. Rectal perforation due to benign stricture caused by rectal burns associated with hot coffee enemas. Endoscopy 2012; 44 Suppl 2 UCTN:E32-3. [PMID: 22396264 DOI: 10.1055/s-0031-1291512] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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: 12/10/2022]
Affiliation(s)
- S Kim
- Department of Internal Medicine, Kyung Hee University Hospital at Gang Dong, Kyung Hee University College of Medicine, Seoul, Republic of Korea
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Ahn DU, Olson DG, Jo C, Chen X, Wu C, Lee JI. Effect of muscle type, packaging, and irradiation on lipid oxidation, volatile production, and color in raw pork patties. Meat Sci 2012; 49:27-39. [PMID: 22063182 DOI: 10.1016/s0309-1740(97)00101-0] [Citation(s) in RCA: 160] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Effects of packaging and irradiation combinations on lipid oxidation, off-flavor, and color changes of raw patties prepared from three pork muscles were studied. Patties were prepared from each of the ground L. dorsi (L. thoracis and lumborum), psoas, and R. femoris muscles of pig, packaged either in oxygen permeable polyethylene bags or impermeable nylon/polyethylene bags, irradiated with an electron beam at 0 or 4.5 kGy dose, and then stored up to two weeks at 4 °C. Lipid 8 oxidation and color of the patties were determined after 0, 3, 7, and 14 days of storage, and volatiles 24 hr after irradiation. Irradiation and high fat content accelerated the lipid oxidation in raw meat during storage. Oxygen availability during storage, however, was more important than irradiation on the lipid oxidation and color values of raw patties. Irradiated meat produced more volatiles than nonirradiated patties, and the proportion of volatiles varied by the packaging-irradiation conditions of patties. Irradiation produced many unidentified volatiles that could be responsible for the off-odor in irradiated raw meat. No single volatile components but total volatiles, however, could be used to predict lipid oxidation status of raw meat.
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Affiliation(s)
- D U Ahn
- Animal Science Department, Iowa State University, Ames, IA 50011, USA
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Lee JI, Kim JY, Kim HW, Bae SJ, Joo DJ, Huh KH, Fang YH, Jeong JH, Kim MS, Kim YS. Long-term viability of transplanted hybrid cellular spheroids within chondrocyte sheets. Transplant Proc 2012; 44:1162-5. [PMID: 22564653 DOI: 10.1016/j.transproceed.2012.02.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Encapsulation of transplanted cells within an immunoisolating membrane may provide a new strategy for protecting these cells from recipient immune responses without the use of immunosuppressive drugs. We have previously reported a novel concept of immunoisolation and immunodelusion using recipient cells instead of traditional artificial materials. We developed a chondrocyte sheeting immunodelusive immunoisolated bioartificial pancreas (CSI-BAP) that would enable transplantation of cells across allogeneic and xenogeneic barriers without the cells being recognized as donor cells and without the need for immunosuppression. Recently, we have constructed hybrid cellular spheroids (HCSs) containing cells from two different cell lines (RIN-5F, an insulin-secreting cell line, and Hep-G2, a hepatocellular carcinoma cell line) to enhance the function and biocompatibility of the HCSs. These HCSs were then encapsulated with multiple layers of chondrocyte sheets obtained from the auricular cartilage of Sprague-Dawley (SD) rats. The in vitro ability of the CSI-BAP to secrete insulin was tested before transplantation. Histological evaluation of CSI-BAP chondrocyte microencapsulated immunoisolated islet morphology and viability of allogeneic or xenogeneic cell lines was performed 100 days after the CSI-BAP was transplanted into SD rats. Morphological evaluations revealed good viability of the islets and progression of islet encapsulation. In vitro insulin secretion from the CSI-BAP was well maintained. Additionally, insulin and albumin secretion from the CSI-BAP was confirmed by in vivo immunohistochemical examination. Moreover, the cell lines transplanted into the subcutaneous space in the form of HCSs within the chondrocyte sheets showed good viability of more than 100 days and sustained insulin and albumin secreting ability.
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Affiliation(s)
- J I Lee
- Department of Biomedical Science and Technology, Regenerative Medicine Laboratory, Konkuk University, Seoul, South Korea
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Oh SJ, Lee JI, Ha WC, Jeong SH, Yim HW, Son HS, Sohn TS. Comparison of cystatin C- and creatinine-based estimation of glomerular filtration rate according to glycaemic status in Type 2 diabetes. Diabet Med 2012; 29:e121-5. [PMID: 22414167 DOI: 10.1111/j.1464-5491.2012.03628.x] [Citation(s) in RCA: 13] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
AIMS The influence of hyperglycaemia on the performance of glomerular filtration rate (GFR) estimating equations remains to be determined. We compared the performance of creatinine-based GFR with cystatin C-based GFR in patients with Type 2 diabetes according to glycaemic status. METHODS In a cross-sectional study of 210 patients with Type 2 diabetes, we staged glycaemic status by HbA(1c) tertiles [HbA(1c) ≤ 75 mmol/mol (9.0%) (n = 70), HbA(1c) 76-95 mmol/mol (9.1-10.8%) (n = 70), HbA(1c) >95 mmol/mol (10.8%) (n = 70)] and measured GFR. Isotopic GFR was measured using renal dynamic imaging with (99m) Tc-diethylene-triamine-penta-acetic acid. Estimated GFR (eGFR) was measured using creatinine-based formulae (Cockcroft-Gault-eGFR, the Modification of Diet in Renal Disease equation-eGFR and the Chronic Kidney Disease Epidemiology Collaboration formula-eGFR) and a cystatin C-based formula (cystatin C-eGFR). RESULTS The isotopic GFR of all patients was 93.1 ± 34.1 ml min(-1) 1.73 m(-2). All methods for estimating GFR underestimated isotopic GFR [Cockcroft-Gault-eGFR (68.8 ± 38.6 ml min(-1) 1.73 m(-2) ) (P < 0.05), Modification of Diet in Renal Disease-eGFR (74.8 ± 31.3 ml min(-1) 1.73 m(-2) ) (P < 0.05), Chronic Kidney Disease Epidemiology Collaboration-eGFR (72.9 ± 26.6 ml min(-1) 1.73 m(-2)) (P < 0.05) and cystatin C-eGFR (83.5 ± 33.2 ml min(-1) 1.73 m(-2)) (P < 0.05)]. In all patient groups, cystatin C-eGFR was less biased and more accurate than the creatinine-based formulae, especially in the group with HbA(1c) > 95 mmol/mol (10.8%) where there was no difference between cystatin C-eGFR and isotopic GFR. CONCLUSIONS Performance of cystatin C-eGFR was superior to creatinine-based GFR in patients with Type 2 diabetes with HbA(1c) >95 mmol/mol (10.8%).
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Affiliation(s)
- S J Oh
- Division of Endocrinology and Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
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Lee JI, Kim HW, Kim JY, Bae SJ, Joo DJ, Huh KH, Fang YH, Jeong JH, Kim MS, Kim YS. Microencapsulation of pancreatic islets with canine ear cartilage for immunoisolation. Transplant Proc 2012; 44:1091-4. [PMID: 22564633 DOI: 10.1016/j.transproceed.2012.02.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Improving human islet transplantation is often limited by the shortage of donors and the side effects of immunosuppressive agents. If immunoisolation is properly used, it can overcome these obstacles. Because artificial materials are adopted in this technique, however, there are still multiple issues with biocompatibility and foreign body reactions. We developed a chondrocyte microencapsulated immunoisolated islet (CMI-islet) that allows living cells to act as the immunoisolating material. To manufacture CMI-islets for xenotransplantation, isolated rat pancreatic islets were placed on low cell-binding culture dishes. Subsequently, expanded canine auricular cartiage primary cells were seeded on these dishes at a high density and maintained in a suspended state via a shaking culture system. Morphological evaluations showed good islet viability and a clear progression of the islet- encapsulation events. When the cells were challenged with glucose, they were able to secrete sufficient insulin according to glucose concentrations. The CMI-islets responded better to the glucose challenge than did nude pancreatic islets and created better glucose-insulin feedback regulation. Moreover, insulin secretion into the culture medium was confirmed over a period of 100 days, showing the survival and secretory capacity of the CMI-islet cells. By microencapsulating pancreatic islets with recipient ear cartilage cells, long-term insulin secretion can be maintained and the response to glucose challenges improved. This new immunodelusion technology differs from other immunoisolation techniques in that the donor tissue is enclosed with the recipient's tissue, thus allowing the transplanted cells to be recognized as recipient cells. This microencapsulation method may lead to developing viable xenotransplantation techniques that do not use immunosuppressive drugs.
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Affiliation(s)
- J I Lee
- Department of Biomedical Science and Technology, Regenerative Medicine Laboratory, Konkuk University, Seoul, South Korea
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Lee EH, Song JD, Kim SY, Han IK, Chang SK, Lee JI. Self-assembled growth of GaAs anti quantum dots in InAs matrix by migration enhanced molecular beam epitaxy. J Nanosci Nanotechnol 2012; 12:1480-1482. [PMID: 22629983 DOI: 10.1166/jnn.2012.4702] [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] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Self-assembled GaAs anti quantum dots (AQDs) were grown in an InAs matrix via migration enhanced molecular beam epitaxy. The transmission electron microscopy image showed that the 2D to 3D transition thickness is below 1.5 monolayers (MLs) of GaAs coverage. The average diameter and height of the GaAs AQDs for 1.5 ML GaAs coverage taken from the atomic force microscopy image were approximately 29.0 nm and 1.4 nm, respectively. The density was approximately 6.0 x 10(10) cm(-2). The size of the AQDs was enlarged in the InAs matrix compared with that on the surface. These results indicate that the GaAs AQDs in the InAs matrix under tensile strain can be effectively formed with the assistance of the migration enhanced epitaxy method.
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Affiliation(s)
- E H Lee
- Nano Convergence Devices Center Korea Institute of Science and Technology, Seoul 136-791, Korea
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Dey SR, Deb GK, Ha AN, Lee JI, Bang JI, Lee KL, Kong IK. Coculturing denuded oocytes during the in vitro maturation of bovine cumulus oocyte complexes exerts a synergistic effect on embryo development. Theriogenology 2011; 77:1064-77. [PMID: 22153275 DOI: 10.1016/j.theriogenology.2011.10.009] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2011] [Revised: 10/03/2011] [Accepted: 10/08/2011] [Indexed: 11/25/2022]
Abstract
The present study examined the effect of coculturing cumulus oocyte complexes (COCs) and denuded oocytes (DOs) during in vitro maturation (IVM) on nuclear and cytoplasmic maturation, zona pellucida (ZP) hardening, the pattern of fertilization and glutathione peroxidase 1 (GPX1) gene expression in the oocyte. Furthermore, the rate of embryonic development and the quality of blastocysts were examined for both COCs and DOs. Three IVM conditions were studied: 1) the coculture of 12 COCs and 60 DOs, 2) COC control with 12 COCs, and 3) DO control with 60 DOs. The IVM was performed in a 120-μl droplet of TCM199-based IVM medium. Following IVM, in vitro fertilization (IVF) and in vitro culture (IVC) were conducted separately for the COCs and DOs (DO coculture) from the IVM coculture group. Coculturing COCs and DOs increased the percentage of oocytes reaching the blastocyst stage and the total number of cells per blastocyst in both the COC coculture (44.4 ± 8.6 vs 26.7 ± 9.7%, P < 0.01, and 137.9 ± 24.9 vs 121.7 ± 21.1, P < 0.05) and the DO coculture (20.5 ± 5.0 vs 11.1 ± 2.5%, P < 0.01, and 121.9 ± 27.5 vs 112.3 ± 33.2, P < 0.05) compared to their respective control groups. The synergistic effects of coculturing were detected as increased nuclear and cytoplasmic maturation, the prevention of ZP hardening, increased monospermic fertilization and increased expression of GPX1 in the oocytes in response to endogenous oocyte-secreted factors. In conclusion, coculturing COCs and DOs may be an effective culture system for both intact COCs and immature DOs.
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Affiliation(s)
- S R Dey
- Division of Applied Life Science (BK21 Program), Graduate School of Gyeongsang, National University, Republic of Korea
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Lee JI, Sato M, Kim HW, Mochida J, Mochida J. Transplantatation of scaffold-free spheroids composed of synovium-derived cells and chondrocytes for the treatment of cartilage defects of the knee. Eur Cell Mater 2011; 22:275-90; discussion 290. [PMID: 22071698 DOI: 10.22203/ecm.v022a21] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Autologous chondrocyte implantation (ACI) is the treatment of choice for osteoarthritis. However, to regenerate articular cartilage using this method, the procedure paradoxically demands that the cell source of the articular chondrocytes (ACs) for ex vivo expansion be from the patient's own healthy cartilage, which can result in donor site morbidity. Accordingly, it is essential to develop a substitute for AC. In the present study, we investigated whether synovium-derived cells (SYs) could be used as a partial replacement for ACs in ACI. ACs and SYs from the knees of rabbits were isolated and cultured, and the growth rates of the cells were compared. To manufacture the cellular transplants, we developed a high-density suspension-shaking culture method (HDSS), which circulates the cells in culture media, promoting self-assembly of scaffold-free cellular aggregates. ACs and SYs were mixed in various ratios using HDSS. Injectable cellular transplants were harvested and transplanted into full-thickness osteochondral defects. Simultaneously, histological evaluations were conducted with toluidine blue and safranin O, and immunohistochemistry of collagen type I and II was conducted. Gene expression to evaluate chondrocyte-specific differentiation was also performed. We successfully prepared a large quantity of spheroids (spheroidal cell aggregates) in a short time using mixed ACs and SYs, for all cellular composition ratios. Our data showed that the minimal therapeutic unit for the transplants contributed to in situ regeneration of cartilage. In summary, SYs can be used as a replacement for ACs in clinical cases of ACI in patients with broad areas of osteoarthritic lesions.
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Affiliation(s)
- J I Lee
- Regenerative Medicine Laboratory, Centre for Stem Cell Research, Department of Biomedical Science and Technology, SMART Institute of Advanced Biomedical Science, Konkuk University, Seoul, Korea
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Kim JY, Kim DH, Kim JH, Lee D, Jeon HB, Kwon SJ, Kim SM, Yoo YJ, Lee EH, Choi SJ, Seo SW, Lee JI, Na DL, Yang YS, Oh W, Chang JW. Soluble intracellular adhesion molecule-1 secreted by human umbilical cord blood-derived mesenchymal stem cell reduces amyloid-β plaques. Cell Death Differ 2011; 19:680-91. [PMID: 22015609 PMCID: PMC3307982 DOI: 10.1038/cdd.2011.140] [Citation(s) in RCA: 143] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Presently, co-culture of human umbilical cord blood mesenchymal stem cells (hUCB-MSCs) with BV2 microglia under amyloid-β42 (Aβ42) exposure induced a reduction of Aβ42 in the medium as well as an overexpression of the Aβ-degrading enzyme neprilysin (NEP) in microglia. Cytokine array examinations of co-cultured media revealed elevated release of soluble intracellular adhesion molecule-1 (sICAM-1) from hUCB-MSCs. Administration of human recombinant ICAM-1 in BV2 cells and wild-type mice brains induced NEP expression in time- and dose-dependent manners. In co-culturing with BV2 cells under Aβ42 exposure, knockdown of ICAM-1 expression on hUCB-MSCs by small interfering RNA (siRNA) abolished the induction of NEP in BV2 cells as well as reduction of added Aβ42 in the co-cultured media. By contrast, siRNA-mediated inhibition of the sICAM-1 receptor, lymphocyte function-associated antigen-1 (LFA-1), on BV2 cells reduced NEP expression by ICAM-1 exposure. When hUCB-MSCs were transplanted into the hippocampus of a 10-month-old transgenic mouse model of Alzheimer's disease for 10, 20, or 40 days, NEP expression was increased in the mice brains. Moreover, Aβ42 plaques in the hippocampus and other regions were decreased by active migration of hUCB-MSCs toward Aβ deposits. These data suggest that hUCB-MSC-derived sICAM-1 decreases Aβ plaques by inducing NEP expression in microglia through the sICAM-1/LFA-1 signaling pathway.
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Affiliation(s)
- J-Y Kim
- Biomedical Research Institute, MEDIPOST Co. Ltd., Seoul 137-874, Republic of Korea
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Pradhan AS, Lee JI, Kim JL. Recent developments of optically stimulated luminescence materials and techniques for radiation dosimetry and clinical applications. J Med Phys 2011; 33:85-99. [PMID: 19893698 PMCID: PMC2772040 DOI: 10.4103/0971-6203.42748] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2008] [Accepted: 05/29/2008] [Indexed: 11/20/2022] Open
Abstract
During the last 10 years, optically stimulated luminescence (OSL) has emerged as a formidable competitor not only to thermoluminescence dosimetry (TLD) but also to several other dosimetry systems. Though a large number of materials have been synthesized and studied for OSL, Al2O3:C continues to dominate the dosimetric applications. Re-investigations of OSL in BeOindicate that this material might provide an alternative to Al2O3:C. Study of OSL of electronic components of mobile phones and ID cards appears to have opened up a feasibility of dosimetry and dose reconstruction using the electronic components of gadgets of everyday use in the events of unforeseen situations of radiological accidents, including the event of a dirty bomb by terrorist groups. Among the newly reported materials, a very recent development of NaMgF3:Eu2+ appears fascinating because of its high OSL sensitivity and tolerable tissue equivalence. In clinical dosimetry, an OSL as a passive dosimeter could do all that TLD can do, much faster with a better or at least the same efficiency; and in addition, it provides a possibility of repeated readout unlike TLD, in which all the dose information is lost in a single readout. Of late, OSL has also emerged as a practical real-time dosimeter for in vivo measurements in radiation therapy (for both external beams and brachytherapy) and in various diagnostic radiological examinations including mammography and CT dosimetry. For in vivo measurements, a probe of Al2O3:C of size of a fraction of a millimeter provides the information on both the dose rate and the total dose from the readout of radioluminescence and OSL signals respectively, from the same probe. The availability of OSL dosimeters in various sizes and shapes and their performance characteristics as compared to established dosimeters such as plastic scintillation dosimeters, diode detectors, MOSFET detectors, radiochromic films, etc., shows that OSL may soon become the first choice for point dose measurements in clinical applications. A brief review of the recent developments is presented.
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Affiliation(s)
- A S Pradhan
- Department of Health Physics, Korea Atomic Energy Research Institute, Yuseong, Daejeon, South Korea
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Kim MJ, Seo SW, Lee KM, Kim ST, Lee JI, Nam DH, Na DL. Differential diagnosis of idiopathic normal pressure hydrocephalus from other dementias using diffusion tensor imaging. AJNR Am J Neuroradiol 2011; 32:1496-503. [PMID: 21700790 DOI: 10.3174/ajnr.a2531] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Because DTI can provide good markers of white matter pathology, it could be useful in differentiating white matter changes of INPH from those of other dementias. The aim of this study was, by using DTI, to compare the characteristic white matter changes in INPH with those in AD, subcortical vascular dementia, and healthy control subjects. MATERIALS AND METHODS Sixteen patients with presurgical INPH, 10 with AD, 10 with subcortical vascular dementia, and 20 healthy control subjects underwent DTI. All patients with INPH showed clinical improvement after shunt surgery, and 9 of them also underwent postshunting DTI. Regions of interest were selected at the periventricular white matter, the anterior limb of the internal capsule, the posterior limb of the internal capsule, the genu and the splenium of the corpus callosum, the superior longitudinal fasciculus, and the inferior longitudinal fasciculus. FA and MD were obtained from each region of interest and were compared among the groups. RESULTS Presurgical INPH showed significantly higher FA than all the other groups in the posterior limb of the internal capsule, which was decreased after shunt surgery. Presurgical MD of the INPH group was higher than that in the AD and healthy control groups but lower than that in the subcortical vascular dementia group in the anterior periventricular white matter, the anterior limb of the internal capsule, and the superior longitudinal fasciculus. In differentiating INPH, the sensitivity and specificity of FA in the posterior limb of the internal capsule was 87.5% and 95.0%, respectively. CONCLUSIONS Patients with shunt-responsive INPH showed higher FA in the posterior limb of the internal capsule compared with healthy controls and those in other groups of dementia that was reversible with shunt surgery. With this parameter, shunt-responsive INPH could be distinguished from AD, subcortical vascular dementia, and healthy conditions with high diagnostic accuracy.
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Affiliation(s)
- M J Kim
- Department of Neurology, Seoul National University Boramae Hospital, Seoul, Republic of Korea
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Lim JU, Joo KR, Park JJ, Shin HP, Cha JM, Lee JI. Duodenal obstruction following papillary stenosis: a rare complication after endoscopic sphincterotomy. Endoscopy 2011; 42 Suppl 2:E342-3. [PMID: 21170840 DOI: 10.1055/s-0030-1255975] [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: 12/10/2022]
Affiliation(s)
- J U Lim
- Department of Internal Medicine, Kyung Hee University East-West Neo Medical Center, Seoul, Korea
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Park SH, Choi SS, Oh SA, Kim CK, Cho SJ, Lee JH, Ryu SH, Pak SH, Jung SK, Lee JI, Park GY, Choi SM, Chae YZ, Kang BH, Cheon DS, Kim HS. Detection and characterization of enterovirus associated with herpangina and hand, foot, and mouth disease in Seoul, Korea. Clin Lab 2011; 57:959-967. [PMID: 22239028] [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] [Indexed: 05/31/2023]
Abstract
BACKGROUND Human enteroviruses (HEVs) are a major cause of herpangina, HFMD (hand, foot, and mouth disease), and other neurological diseases in Seoul, Korea. METHODS A total of 56 specimens from hospitalized patients collected from February to December 2009 (37 females and 19 males) in Seoul were tested for HEV from stool, throat swab, and vesicle swab samples taken from patients with herpangina or HFMD using cell culture and RT-PCR in 2009. By the 1D gene, encoding the VP1 capsid protein, seven different HEV genotypes were detected with Coxsackievirus A2, A4, A5, A9, A16 (CA), Coxsackievirus B1 (CB), and Enterovirus 71 (EV71). The most prevalent genotype was CA16 (6, 10.7%), followed by CA2 (4, 7.1%), CA5 (4, 7.1%), EV71 (2, 3.6%), CA4 (1, 1.8%), CA9 (1, 1.8%), and CB1 (1, 1.8%). The 1D gene sequences of two EV71 strains were closely related with one another (98.5% nucleotide similarity) and belonged to the C4 genotype. CONCLUSIONS It is important to continuously survey the genetic characteristics of EV71 and CA16 from patients, which will provide useful data that aids in our understanding of HFMD infections in Seoul, Korea and may contribute to future control.
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MESH Headings
- Capsid Proteins/genetics
- Child, Preschool
- Coxsackievirus Infections/epidemiology
- Coxsackievirus Infections/virology
- Disease Outbreaks
- Enterovirus/genetics
- Enterovirus/isolation & purification
- Enterovirus A, Human/genetics
- Enterovirus A, Human/isolation & purification
- Enterovirus B, Human/genetics
- Enterovirus B, Human/isolation & purification
- Enterovirus Infections/epidemiology
- Enterovirus Infections/virology
- Feces/virology
- Female
- Hand, Foot and Mouth Disease/epidemiology
- Hand, Foot and Mouth Disease/virology
- Herpangina/epidemiology
- Herpangina/virology
- Humans
- Infant
- Infant, Newborn
- Male
- Pharynx/virology
- Phylogeny
- RNA, Viral/genetics
- RNA, Viral/isolation & purification
- Republic of Korea/epidemiology
- Sequence Analysis, RNA
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Affiliation(s)
- S H Park
- Seoul Metropolitan Government Research Institute of Public Health and Environment, Virus Team, 202-3, Yangjae-Dong, Seocho-Gu, Seoul 137-734, Republic of Korea.
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Cho YR, Hong BY, Lim SH, Kim HW, Ko YJ, Im SA, Lee JI. Effects of joint effusion on proprioception in patients with knee osteoarthritis: a single-blind, randomized controlled clinical trial. Osteoarthritis Cartilage 2011; 19:22-8. [PMID: 21034839 DOI: 10.1016/j.joca.2010.10.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Revised: 10/08/2010] [Accepted: 10/17/2010] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To assess the effects of joint effusion on proprioceptive status in patients with knee osteoarthritis (OA). DESIGN A single-blind, randomized, controlled clinical trial in 40 female subjects aged 50 years and over with painful knee OA. All subjects were randomly assigned to either the control or experimental group. A volume of 20 mL of normal saline was injected into the knee joint cavity of subjects in the experimental group under ultrasonographic guidance. Proprioceptive acuity was assessed by active repositioning of the lower limb using an electrogoniometer to measure knee joint position sense (JPS) under both non-weight-bearing (NWB) and weight-bearing (WB) conditions twice, with a 20-min rest interval. The experimental group performed the task twice (Test 1 and Test 2) before and within 5 min after joint infusion. The control group also performed Test 1 and Test 2 without joint infusion. The outcome of interest was the absolute angular error (AAE), ignoring the direction of the error, between the randomized target angle and the patient's reproduced angle of JPS values. RESULTS Compared with the control group, JPS was significantly compromised in the experimental group in the NWB test after joint infusion (P=0.025). However, no significant differences in the angular error were observed between Test 1 and Test 2 in the control group for the NWB or WB test or in the experimental group for the WB test after infusion (P>0.05). CONCLUSIONS This study showed that joint effusion impairs proprioceptive function in osteoarthritic knee joints.
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Affiliation(s)
- Y R Cho
- Department of Rehabilitation Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Park SH, Kim EJ, Oh SA, Kim CK, Choi SS, Cho SJ, Han KY, Lee JI, Kim MY, Jung HS, Chun DS, Kim HS. Viral agents associated with acute gastroenteritis in Seoul, Korea. Clin Lab 2011; 57:59-65. [PMID: 21391466] [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] [Indexed: 05/30/2023]
Abstract
BACKGROUND The present study was carried out to describe the epidemiologic characteristics of viral gastroenteritis and determine the phylogenetic composition of norovirus strains detected in hospitalized children with acute gastroenteritis in Seoul, Korea. METHODS AND RESULTS In total, 10,603 stool samples were collected from 2004 to 2008 and tested by RT-PCR or ELISA. In 4,170 (39.3%) samples at least one viral pathogen was present. Rotavirus (RoV) (1,864, 17.5%) was found to be the causative agent followed by norovirus (NoV) (1,845, 17.4%), human adenovirus (HAdV) (266, 2.5%), human astrovirus (HAstV) (194, 1.8%), and sapovirus (SV) (1, 0.009%). Five GI genotypes (GI-1, GI-3, GI-4, GI-8, and GI-9) and eight GII genotypes (GII-2, GII-3, GII-4, GII-6, GII-7, GII-12, GII-16, and GII-17) of NoV were identified in acute gastroenteritis patients in 2008. CONCLUSIONS The genetic characteristics of norovirus and the epidemiologic patterns of a viral pathogen from acute gastroenteritis patients may give potentially effective data for epidemiological studies in Seoul, Korea.
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Affiliation(s)
- S H Park
- Seoul Metropolitan Government Research Institute of Public Health and Environment, Virus team, Republic of Korea.
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Salehi F, Alkins R, Jalili S, Radovanovic I, Hayhurst C, Burrell K, Lee JI, Agnithori S, Croul S, Gentili F, Zadeh G. Tissue and RNA Microarray Analysis of Invasive and Noninvasive Meningiomas. Skull Base 2011. [DOI: 10.1055/s-2011-1274271] [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: 10/18/2022]
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Wataya T, Salehi F, Lee JI, Radovanovic I, Jalili S, Burrell K, Croul S, Gentili F, Zadeh G. Identifying Differential Gene Expression Between Recurrent versus Nonrecurrent Chordomas. Skull Base 2011. [DOI: 10.1055/s-2011-1274306] [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: 10/18/2022]
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Lee S, Nam DH, Lee JI, Park W, Choi DH, Huh SJ, Park YH, Ahn JS, Im YH. Abstract P6-13-05: Differences of Clinical Manifestations and Therapeutic Outcomes in Leptomeningeal Metastases (LM) According to Breast Cancer Subtypes. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p6-13-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Backgrounds: Breast cancer is the solid tumor most commonly associated with leptomeningeal metastases (LM). Therapeutic modalities include intrathecal and systemic chemotherapy, radiotherapy and other palliative modality including placement of a ventricular reservoir. The aim of this study is to characterize clinical feature and outcomes of LM according to breast cancer subtypes in conjunction with whole CNS metastases.
Methods: A retrospective study was performed on breast cancer patients with LM who received palliative management at Samsung Medical Center between 1994 and 2008. Among 281 metastatic breast cancer patients, 71 breast cancer patients with LM were identified. They were divided into three biological subgroups. The propensity of biological subtypes for LM, clinical manifestation including recursive partitioning analysis of Radiation Therapy Oncology Group (RPA RTOG) prognostic class, and therapeutic outcomes were assessed.
Results: The median age was 48 (range 26-70) years. The rates of the patients with triple negative breast cancer (TNBC), human epidermal growth factor receptors 2 (HER2)-positive and hormone receptor (HR)- positive subtype breast cancer were 26 (44%), 15 (25%) and 18 (31%), respectively. Sixty-four patients (90%) had metastatic disease at sites other than LM. TNBC were more common in RPA RTOG prognostic class III than those in HER2 and HR-positive subtypes (61% vs 39% vs 0%, P<0.0001). CNS including LM was the first site of distant metastasis in 65% of the TNBC patients. Treatment includes intrathecal chemotherapy (IT), whole brain radiotherapy (WBRT), and systemic chemotherapy. The median survival duration from the diagnosis of LM to death (OS-LM) was 4.5 months (range 0.2-26.4 months). Main causes of death were deterioration of neurologic sequelae associated with LM (55%), systemic disease progression (27%), and et cetera (18%). Death rates related with LM at each subtype were 64% for TNBC, 36% for HER2-positive, and 0% for HR-positive patients (p=0.060). In the univariate analysis, RPA RTOG classification (p=0.003), systemic disease control at LM (p=0.041), cytologic negative conversion to IT (p=0.001), systemic chemotherapy after LM diagnosis (p=0.002), and combined modality for LM treatment (p=0.005) were singled out as having prognostic value for OS-LM. Cox-regression multivariate analysis showed that RPA class (HR (Hazard Ratio) 1.8, p=0.022), cytologic negative conversion to IT (HR 0.4, p=0.043), and systemic chemotherapy (HR 0.24, p=0.004) are identified as independent prognostic factors.
Conclusion: TNBC and HER2-positive breast cancer appeared to have special predilection for LM as well as brain parenchymal metastases. High RPA class of TNBC may reflect more aggressive tumor biology in this sanctuary area. OS-LM depended on RPA class, cytologic negative conversion, and the use of systemic chemotherapy. The role of systemic chemotherapy and active local treatment modalities according to subtypes should be defined to improve dismal prognosis.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P6-13-05.
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Lim JU, Shin HP, Lee JI, Cha JM, Joo KR. Malposition of a percutaneous endoscopic gastrostomy tube in the jejunum. Endoscopy 2010; 42 Suppl 2:E116. [PMID: 20306400 DOI: 10.1055/s-0029-1243982] [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: 12/10/2022]
Affiliation(s)
- J U Lim
- Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea
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Suh JP, Jeung JU, Lee JI, Choi YH, Yea JD, Virk PS, Mackill DJ, Jena KK. Identification and analysis of QTLs controlling cold tolerance at the reproductive stage and validation of effective QTLs in cold-tolerant genotypes of rice (Oryza sativa L.). Theor Appl Genet 2010; 120:985-95. [PMID: 20012263 DOI: 10.1007/s00122-009-1226-8] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Accepted: 11/18/2009] [Indexed: 05/03/2023]
Abstract
Low temperature or cold stress is one of the major constraints of rice production and productivity in temperate rice-growing countries and high-altitude areas in the tropics. Even though low temperature affects the rice plant in all stages of growth, the percent seed set is damaged severely by cold and this reduces the yield potential of cultivars significantly. In this study, a new source of cold-tolerant line, IR66160-121-4-4-2, was used as a donor parent with a cold-sensitive cultivar, Geumobyeo, to produce 153 F(8) recombinant inbred lines (RILs) for quantitative trait locus (QTL) analysis. QTL analysis with 175 polymorphic simple sequence repeat (SSR) markers and composite interval mapping identified three main-effect QTLs (qPSST-3, qPSST-7, and qPSST-9) on chromosomes 3, 7, and 9. The SSR markers RM569, RM1377, and RM24545 were linked to the identified QTLs for cold tolerance with respect to percent seed set using cold-water (18-19 degrees C) irrigation in the field and controlled air temperature (17 degrees C) in the greenhouse. The total phenotypic variation for cold tolerance contributed by the three QTLs was 27.4%. RILs with high percent seed set under cold stress were validated with linked DNA markers and by haplotype analysis that revealed the contribution of progenitor genomes from the tropical japonica cultivar Jimbrug (Javanica) and temperate japonica cultivar Shen-Nung89-366. Three QTLs contributed by the cold-tolerant parent were identified which showed additive effect on percent seed set under cold treatment. This study demonstrated the utility of a new phenotyping method as well as the identification of SSR markers associated with QTLs for selection of cold-tolerant genotypes to improve temperate rice production.
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Affiliation(s)
- J P Suh
- IRRI-Korea Office, National Institute of Crop Science, RDA, 209 Seodun-Dong, Suwon, 441-857, Republic of Korea
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Abstract
Callosal disconnection signs are closely related to asymmetric hemispheric specialization of cognitive functions. Although extinction is more commonly associated with the right parietotemporal lesion, it may occur following lesions of the corpus callosum. After an infarction involving the left splenium, a 58-year-old right-handed man had no disconnection symptoms that had been reported earlier, but showed visual extinction with left or right visual hemifield dominant stimuli. Our results suggest that dominance specific visual extinction might be another disconnection sign associated with splenial lesion.
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Affiliation(s)
- J I Lee
- Department of Neurology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Kangnam-gu, Seoul, South Korea
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Affiliation(s)
- K S Hong
- Department of Neurosurgery, Samsung Medical Centre, Sungkyunkwan University School of Medicine, 50 Ilwon-Dong, Kangnam-Gu, Seoul 135-710 Korea
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Kim G, Kim H, Kim IJ, Kim JR, Lee JI, Ree M. Bacterial adhesion, cell adhesion and biocompatibility of Nafion films. J Biomater Sci Polym Ed 2009; 20:1687-707. [PMID: 19723436 DOI: 10.1163/156856208x386273] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We investigated bioadhesion (bacterial and cell adhesion) and biocompatibility of poly(tetrafluoroethylene-co-perfluoro-3,6-dioxa-4-methyl-7-octenesulfonic acid) (Nafion) and compared the results with those obtained with poly(vinylidene fluoride-co-hexafluoropropylene) (PVFHFP). When incubated with bacteria for 4 h to 7 days, Nafion film exhibited scarce bacterial adhesion at 6 h, after which the adhesion gradually increasing to relatively low levels. In contrast, significant bacterial adhesion to PVFHFP film was observed at 4 h, and much higher adhesion levels were shown thereafter. Although HEp-2 human cells adhered normally to both films, reaching confluence in 7-8 days, the cells adhered to Nafion appeared more lively and stable than those to PVFHFP. Subcutaneous implantation in mice revealed that Nafion elicited a mild acute inflammatory reaction without chronic inflammation or tissue necrosis, indicating excellent biocompatibility in mice. PVFHFP, however, provoked a moderate and prolonged acute inflammatory response. These differences in the biological characteristics of Nafion and PVFHFP films may be attributable to the differences in the chemical and physical natures of these polymer films. Nafion film provided a sufficiently solid support, expressing a high surface charge density and good water-wettability. In summary, Nafion is suitable for use in biomedical applications that require biocompatibility with a reduced possibility of post-operative infections.
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Affiliation(s)
- G Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 790-784, South Korea
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Paik YH, Kim JK, Lee JI, Kang SH, Kim DY, An SH, Lee SJ, Lee DK, Han KH, Chon CY, Lee SI, Lee KS, Brenner DA. Celecoxib induces hepatic stellate cell apoptosis through inhibition of Akt activation and suppresses hepatic fibrosis in rats. Gut 2009; 58:1517-27. [PMID: 19201774 DOI: 10.1136/gut.2008.157420] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [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: 12/20/2022]
Abstract
BACKGROUND AND AIMS Activated hepatic stellate cells (HSCs) but not quiescent HSCs express cyclo-oxygenase-2 (COX-2), suggesting that the COX-2/prostanoid pathway has an active role in hepatic fibrogenesis. However, the role of COX-2 inhibitors in hepatic fibrogenesis remains controversial. The aim of this study was to investigate the antifibrotic effects of celecoxib, a selective COX-2 inhibitor. METHODS The effects of various COX inhibitors-that is, ibuprofen, celecoxib, NS-398 and DFU, were investigated in activated human HSCs. Then, the antifibrotic effect of celecoxib was evaluated in hepatic fibrosis developed by bile duct ligation (BDL) or peritoneal thioacetamide (TAA) injection in rats. RESULTS Celecoxib, NS-398 and DFU inhibited platelet-derived growth facor (PDGF)-induced HSC proliferation; however, only celecoxib (> or =50 microM) induced HSC apoptosis. All COX inhibitors completely inhibited prostaglandin E(2) (PGE(2)) and PGI(2) production in HSCs. Separately, PGE(2) and PGI(2) induced cell proliferation and extracellular signal-regulated kinase (ERK) activation in HSCs. All COX inhibitors attenuated ERK activation, but only celecoxib significantly inhibited Akt activation in HSCs. Celecoxib-induced apoptosis was significantly attenuated in HSCs infected with adenovirus containing a constitutive active form of Akt (Ad5myrAkt). Celecoxib had no significant effect on PPARgamma (peroxisome proliferator-activated receptor gamma) expression in HSCs. Celecoxib inhibited type I collagen mRNA and protein production in HSCs. Oral administration of celecoxib (20 mg/kg/day) significantly decreased hepatic collagen deposition and alpha-SMA (alpha-smooth muscle actin) expression in BDL- and TAA-treated rats. Celecoxib treatment significantly decreased mRNA expression of COX-2, alpha-SMA, transforming growth factor beta1 (TGFbeta1) and collagen alpha1(I) in both models. CONCLUSIONS Celecoxib shows a proapoptotic effect on HSCs through Akt inactivation and shows antifibrogenic effects in BDL- and TAA-treated rats, suggesting celecoxib as a novel antifibrotic agent of hepatic fibrosis.
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Affiliation(s)
- Y-H Paik
- Department of Internal Medicine, Institute of Gastroenterology, Brain Korea 21 Project for Medical Science, Liver Cirrhosis Clinical Research Center, Yonsei University College of Medicine, Seoul 135-720, Korea
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Lee EJ, Joo KR, Cha JM, Shin HP, Jung SW, Lee JI, Kim GY. Intra-ampullary protruding mass: unusual presentation of mucinous carcinoma of the pancreas. Endoscopy 2009; 41 Suppl 2:E74-5. [PMID: 19370519 DOI: 10.1055/s-0028-1119731] [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: 12/10/2022]
Affiliation(s)
- E J Lee
- Department of Internal Medicine, Kyung Hee University East-West Neo Medical Center, Seoul, Korea
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Kim TJ, Jang EJ, Lee JI. Vaccination of rock bream, Oplegnathus fasciatus (Temminck & Schlegel), using a recombinant major capsid protein of fish iridovirus. J Fish Dis 2008; 31:547-551. [PMID: 18577102 DOI: 10.1111/j.1365-2761.2007.00853.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- T J Kim
- Biotherapy Human Resources Center, Chonnam National University, Gwangju, Korea
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Kim TJ, Jung TS, Lee JI. Expression and serological application of a capsid protein of an iridovirus isolated from rock bream, Oplegnathus fasciatus (Temminck & Schlegel). J Fish Dis 2007; 30:691-699. [PMID: 17958613 DOI: 10.1111/j.1365-2761.2007.00856.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Iridoviruses infect a wide variety of wild and cultured fish. Those iridoviruses belonging to the genus Ranavirus, in the Iridoviridae family, cause systemic disease in infected animals with a high morbidity and mortality. This paper reports the cloning, sequencing, and expression of the rock bream iridovirus (RBIV) major capsid protein (MCP) in an Escherichia coli expression system for subsequent immunological studies. The completeness of the expressed protein was confirmed by peptide mass fingerprinting (PMF) analysis using MALDI-TOF MS. The recombinant MCP (rMCP)-specific mouse polyclonal antibody reacted with the viral 52 kDa protein, indicating that this rMCP induces an immunological response. Fish antibodies induced against iridovirus infection were also detected using ELISA when rMCP was used as an antigen. As a result, it was found that many cultured rock bream (92.5%) were naturally infected with iridovirus and that the rMCP might be useful for serological tests.
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Affiliation(s)
- T J Kim
- Biotherapy Human Resources Center, College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
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