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Hwang HS, Park IY, Hong JI, Kim JR, Kim HA. Comparison of joint degeneration and pain in male and female mice in DMM model of osteoarthritis. Osteoarthritis Cartilage 2021; 29:728-738. [PMID: 33609695 DOI: 10.1016/j.joca.2021.02.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 01/13/2021] [Accepted: 02/08/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE While the prevalence of radiographic and symptomatic osteoarthritis (OA) is higher in women, male mice are more frequently used in animal experiments to explore its pathogenesis or drug efficacy. In this study, we examined whether sexual dimorphism affects pain and joint degeneration in destabilization of the medial meniscus (DMM) mouse model. METHODS DMM or sham surgery was performed on the knee of male and female C57BL/6 mice. Joint damage was assessed by safranin O staining and scored using the Osteoarthritis Research Society International (OARSI) scoring system. Von Frey hair, incapacitance, and rotarod tests were conducted to measure joint pain. The analgesic effect of capsazepine (CPZ), a TRPV1 antagonist, was compared between male and female mice. RESULTS Histology and OARSI scoring analysis showed that cartilage degeneration developed, and progressed in both male and female DMM groups, however, damage was less severe in females at the late stage of OA. Pain behavior, as measured by mechanical allodynia, was displayed for longer in male DMM mice compared to females. Incapacitance data showed that CPZ significantly reduced DMM-induced pain in male mice but not in female mice. Immunofluorescence microscopy analysis demonstrated that DMM surgery increased the expression of TRPV1 in both female and male dorsal root ganglion (DRG). Injection of CPZ significantly suppressed TRPV1 expression in the DRG of male mice only. CONCLUSION Joint damage develops comparably in both female and male mice after DMM although it progresses less in females. There was a subtle sex difference in pain behaviors and analgesic efficacy of a TRPV1 antagonist, which was accompanied by a differential regulation of TPRV1.
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Affiliation(s)
- H S Hwang
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - I Y Park
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - J I Hong
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - J R Kim
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea
| | - H A Kim
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 14068, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon, 24251, South Korea.
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Choi HJ, Moon KW, Kim HO, Lee YA, Hong SJ, Jung JY, Kim HA, Suh CH, Ha YJ, Kim IJ, Lee J, Park EK, Lee SG, Seo MR, Baek HJ, Choi ST, Song JS. Seasonal Variations and Associated Factors of Gout Attacks: a Prospective Multicenter Study in Korea. J Korean Med Sci 2020; 35:e133. [PMID: 32449320 PMCID: PMC7246186 DOI: 10.3346/jkms.2020.35.e133] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 03/13/2020] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND We purposed to evaluate the seasonality and associated factors of the incidence of gout attacks in Korea. METHODS We prospectively enrolled patients with gout attacks who were treated at nine rheumatology clinics between January 2015 and July 2018 and followed them for 1-year. Demographic data, clinical and laboratory features, and meteorological data including seasonality were collected. RESULTS Two hundred-five patients (men, 94.1%) were enrolled. The proportion of patients with initial gout attacks was 46.8% (n = 96). The median age, body mass index, attack duration, and serum uric acid level at enrollment were 50.0 years, 25.4, 5.0 days, and 7.4 mg/dL, respectively. Gout attacks were most common during spring (43.4%, P < 0.001) and in March (23.4%, P < 0.001). A similar pattern of seasonality was observed in the group with initial gout attacks. Alcohol was the most common provoking factor (39.0%), particularly during summer (50.0%). The median diurnal temperature change on the day of the attack was highest in the spring (9.8°C), followed by winter (9.3°C), fall (8.6°C), and summer (7.1°C) (P = 0.027). The median change in humidity between the 2 consecutive days (the day before and the day of the attack) was significantly different among the seasons (3.0%, spring; 0.3%, summer; -0.9%, fall; -1.2%, winter; P = 0.015). One hundred twenty-five (61%) patients completed 1-year follow-up (51% in the initial attack group). During the follow-up period, 64 gout flares developed (21 in the initial attack group). No significant seasonal variation in the follow-up flares was found. CONCLUSION In this prospective study, the most common season and month of gout attacks in Korea are spring and March, respectively. Alcohol is the most common provoking factor, particularly during summer. Diurnal temperature changes on the day of the attack and humidity changes from the day before the attack to the day of the attack are associated with gout attack in our cohort.
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Affiliation(s)
- Hyo Jin Choi
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Ki Won Moon
- Division of Rheumatology, Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Hyun Ok Kim
- Division of Rheumatology, Department of Internal Medicine, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Yeon Ah Lee
- Division of Rheumatology, Department of Internal Medicine, Kyung Hee University Hospital, Seoul, Korea
| | - Seung Jae Hong
- Division of Rheumatology, Department of Internal Medicine, Kyung Hee University Hospital, Seoul, Korea
| | - Ju Yang Jung
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Hyoun Ah Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Chang Hee Suh
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - You Jung Ha
- Division of Rheumatology, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - In Je Kim
- Division of Rheumatology, Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Jisoo Lee
- Division of Rheumatology, Department of Internal Medicine, Ewha Womans University College of Medicine, Seoul, Korea
| | - Eun Kyoung Park
- Division of Rheumatology, Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
| | - Seung Geun Lee
- Division of Rheumatology, Department of Internal Medicine, Pusan National University School of Medicine, Busan, Korea
| | - Mi Ryoung Seo
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Han Joo Baek
- Division of Rheumatology, Department of Internal Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Korea
| | - Sang Tae Choi
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University School of Medicine, Seoul, Korea
| | - Jung Soo Song
- Division of Rheumatology, Department of Internal Medicine, Chung-Ang University School of Medicine, Seoul, Korea.
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Seo YB, Moon SJ, Jeon CH, Song JY, Sung YK, Jeong SJ, Kwon KT, Kim ES, Kim JH, Kim HA, Park DJ, Park SH, Park JK, Ahn JK, Oh JS, Yun JW, Lee JH, Lee HY, Choi MJ, Choi WS, Choi YH, Choi JH, Heo JY, Cheong HJ, Lee SS. The Practice Guideline for Vaccinating Korean Patients with Autoimmune Inflammatory Rheumatic Disease. Infect Chemother 2020; 52:252-280. [PMID: 32618150 PMCID: PMC7335656 DOI: 10.3947/ic.2020.52.2.252] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 06/11/2020] [Indexed: 01/03/2023] Open
Abstract
To develop a clinical practice guideline for vaccination in patients with autoimmune inflammatory rheumatic disease (AIIRD), the Korean College of Rheumatology and the Korean Society of Infectious Diseases developed a clinical practice guideline according to the clinical practice guideline development manual. Since vaccination is unlikely to cause AIIRD or worsen disease activities, required vaccinations are recommended. Once patients are diagnosed with AIIRD, treatment strategies should be established and, at the same time, monitor their vaccination history. It is recommended to administer vaccines when the disease enters the stabilized stage. Administering live attenuated vaccines in patients with AIIRD who are taking immunosuppressants should be avoided. Vaccination should be considered in patients with AIIRD, prior to initiating immunosuppressants. It is recommended to administer influenza, Streptococcus pneumoniae, hepatitis A, hepatitis B, herpes zoster, measles-mumps-rubella virus, human papillomavirus, and tetanus-diphtheria-pertussis vaccines in patients with AIIRD; such patients who planned to travel are generally recommended to be vaccinated at the recommended vaccine level of healthy adults. Those who live in a household with patients with AIIRD and their caregivers should also be vaccinated at levels that are generally recommended for healthy adults.
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Affiliation(s)
- Yu Bin Seo
- Division of Infectious Diseases, Department of Internal Medicine, Hallym University College of Medicine, Chuncheon, Korea
| | - Su Jin Moon
- Division of Rheumatology, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu, Korea
| | - Chan Hong Jeon
- Division of Rheumatology, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Joon Young Song
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul, Korea
| | - Yoon Kyoung Sung
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Su Jin Jeong
- Division of Infectious Diseases, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Ki Tae Kwon
- Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Eu Suk Kim
- Division of Infectious Diseases, Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jae Hoon Kim
- Department of Rheumatology, Korea University Guro Hospital, Seoul, Korea
| | - Hyoun Ah Kim
- Department of Rheumatology, Ajou University School of Medicine, Suwon, Korea
| | - Dong Jin Park
- Department of Rheumatology, Chonnam National University Medical School & Hospital, Gwangju, Korea
| | - Sung Hoon Park
- Division of Rheumatology, Department of Internal Medicine, Catholic University of Daegu School of Medicine, Daegu, Korea
| | - Jin Kyun Park
- Division of Rheumatology, Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Joong Kyong Ahn
- Division of Rheumatology, Department of Internal Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ji Seon Oh
- Department of Information Medicine, Asan Medical Center, Seoul, Korea
| | - Jae Won Yun
- Division of Infectious Disease Control, Korea Centers for Disease Control and Prevention, Osong, Korea
| | - Joo Hyun Lee
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Inje University Ilsan Paik Hospital, Ilsan, Korea
| | - Hee Young Lee
- Center for Preventive Medicine and Public Health, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Min Joo Choi
- Division of Infectious Disease, Department of Internal Medicine, Catholic Kwandong University, International St. Mary's Hospital, Incheon, Korea
| | - Won Suk Choi
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Ansan Hospital, Ansan, Korea
| | - Young Hwa Choi
- Department of Infectious Diseases, Ajou University School of Medicine, Suwon, Korea
| | - Jung Hyun Choi
- Division of Infectious Diseases, Department of Internal Medicine, The Catholic University of Korea, Eunpyeong St. Mary's Hospital, Seoul, Korea
| | - Jung Yeon Heo
- Department of Infectious Diseases, Ajou University School of Medicine, Suwon, Korea
| | - Hee Jin Cheong
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Guro Hospital, Seoul, Korea.
| | - Shin Seok Lee
- Department of Rheumatology, Chonnam National University Medical School & Hospital, Gwangju, Korea.
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Hwang HS, Lee MH, Kim HA. Fibronectin fragment inhibits xylosyltransferase-1 expression by regulating Sp1/Sp3- dependent transcription in articular chondrocytes. Osteoarthritis Cartilage 2019; 27:833-843. [PMID: 30685487 DOI: 10.1016/j.joca.2019.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 01/09/2019] [Accepted: 01/15/2019] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We investigated the effects of 29-kDa amino-terminal fibronectin fragment (29-kDa FN-f) on xylosyltransferase-1 (XT-1), an essential anabolic enzyme that catalyzes the initial and rate-determining step in glycosaminoglycan chain synthesis, in human primary chondrocytes. METHODS Proteoglycan and XT-1 expression in cartilage tissue was analyzed using safranin O staining and immunohistochemistry. The effects of 29-kDa FN-f on XT-1 expression and its relevant signaling pathway were analyzed by quantitative real-time-PCR, immunoblotting, chromatin immunoprecipitation, and immunoprecipitation assays. The receptors for 29-kDa FN-f were investigated using small interference RNA and blocking antibodies. RESULTS The expression of XT-1 was significantly lower in human osteoarthritis cartilage than in normal cartilage. Intra-articular injection of 29-kDa FN-f reduced proteoglycan levels and XT-1 expression in murine cartilage. In addition, in 29-kDa FN-f-treated cells, XT-1 expression was significantly suppressed at both the mRNA and protein levels, modulated by the transcription factors specificity protein 1 (Sp1), Sp3, and activator protein 1 (AP-1). The 29-kDa FN-f suppressed the binding of Sp1 to the promoter region of XT-1 and enhanced the binding of Sp3 and AP-1. Inhibition of mitogen-activated protein kinase and nuclear factor kappa B signaling pathways restored the 29-kDa FN-f-inhibited XT-1 expression, along with the altered expression of Sp1 and Sp3. Blockading toll-like receptor 2 (TLR-2) and integrin α5β1 via siRNA and blocking antibodies revealed that the effects of 29-kDa FN-f on XT-1 expression were mediated through the TLR-2 and integrin α5β1 signaling pathways. CONCLUSION These results demonstrate that 29-kDa FN-f negatively affects cartilage anabolism by regulating glycosaminoglycan formation through XT-1.
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MESH Headings
- Aged
- Animals
- Cartilage, Articular/drug effects
- Cartilage, Articular/enzymology
- Cartilage, Articular/pathology
- Cells, Cultured
- Chondrocytes/drug effects
- Chondrocytes/enzymology
- Down-Regulation/drug effects
- Enzyme Inhibitors/pharmacology
- Female
- Fibronectins/pharmacology
- Humans
- Male
- Mice, Inbred C57BL
- Middle Aged
- Osteoarthritis, Knee/enzymology
- Osteoarthritis, Knee/genetics
- Osteoarthritis, Knee/pathology
- Pentosyltransferases/antagonists & inhibitors
- Pentosyltransferases/biosynthesis
- Pentosyltransferases/genetics
- Pentosyltransferases/metabolism
- Peptide Fragments/pharmacology
- RNA, Messenger/genetics
- Signal Transduction/drug effects
- Sp1 Transcription Factor/genetics
- Sp1 Transcription Factor/metabolism
- Sp3 Transcription Factor/genetics
- Sp3 Transcription Factor/metabolism
- Transcription Factor AP-1/genetics
- Transcription Factor AP-1/metabolism
- Transcription, Genetic
- UDP Xylose-Protein Xylosyltransferase
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Affiliation(s)
- H S Hwang
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 431-070, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon 200-702, South Korea.
| | - M H Lee
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 431-070, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon 200-702, South Korea.
| | - H A Kim
- Division of Rheumatology, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, 431-070, South Korea; Institute for Skeletal Aging, Hallym University, Chunchon 200-702, South Korea.
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Park DJ, Kim SH, Nah SS, Lee JH, Kim SK, Lee YA, Hong SJ, Kim HS, Lee HS, Kim HA, Joung CI, Kim SH, Lee SS. Association between brain-derived neurotrophic factor gene polymorphisms and fibromyalgia in a Korean population: a multicenter study. Arthritis Res Ther 2018; 20:220. [PMID: 30285822 PMCID: PMC6235218 DOI: 10.1186/s13075-018-1726-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Accepted: 09/18/2018] [Indexed: 01/28/2023] Open
Abstract
Background Several lines of evidence imply that brain-derived neurotrophic factor (BDNF) is involved in the pathophysiology of fibromyalgia (FM); in this regard, patients with FM have altered blood and cerebrospinal fluid levels of BDNF. In this study, we explored the association between BDNF gene polymorphisms and FM susceptibility and the severity of symptoms. Methods In total, 409 patients with FM and 423 healthy controls in 10 medical centers were enrolled from the Korean nationwide FM survey. The alleles and genotypes at 10 positions in the BDNF gene were genotyped. Results The allele and genotype frequencies of BDNF rs11030104 differed significantly between the patients with FM and the controls (P = 0.031). The GG genotype of rs11030104 had a protective effect against FM (P = 0.016), and the G allele of rs11030104 was negatively associated with the presence of FM compared with the A allele (P = 0.013). In comparison, although the allele and genotype frequencies of BDNF rs12273539 did not differ between the two groups, the TT genotype of BDNF rs12273539 was associated with susceptibility to FM (P = 0.038). Haplotype analyses implied that some BDNF haplotypes have a protective effect against FM. Finally, several genotypes and haplotypes of the BDNF gene contributed to specific symptoms of FM. Conclusions This study is the first to evaluate the associations between BDNF gene polymorphisms and FM. Our results imply that some BDNF single-nucleotide polymorphisms and haplotypes are associated with susceptibility to, and contribute to the symptoms of, FM.
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Affiliation(s)
- Dong-Jin Park
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School and Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea
| | - Seong-Ho Kim
- Department of Internal Medicine, Inje University Haeundae Paik Hospital, Busan, Korea
| | - Seong-Su Nah
- Department of Internal Medicine, Soonchunhyang University, College of Medicine, Cheonan, Korea
| | - Ji Hyun Lee
- Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Seong-Kyu Kim
- Department of Internal Medicine, Catholic University of Daegu, School of Medicine, Daegu, Korea
| | - Yeon-Ah Lee
- Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Seung-Jae Hong
- Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Hyun-Sook Kim
- Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Hye-Soon Lee
- Hanyang University College of Medicine and the Hospital for Rheumatic Diseases, Seoul, Korea
| | - Hyoun Ah Kim
- Department of Allergy and Rheumatology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea
| | - Chung-Il Joung
- Department of Internal Medicine, Konyang University Medical School, Daejeon, Korea
| | - Sang-Hyon Kim
- Departments of Internal Medicine, School of Medicine, Keimyung University, Daegu, Korea
| | - Shin-Seok Lee
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School and Hospital, 42 Jebong-ro, Dong-gu, Gwangju, 61469, Republic of Korea.
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Kim HA, Lee HS, Shin TH, Jung JY, Baek WY, Park HJ, Lee G, Paik MJ, Suh CH. Polyamine patterns in plasma of patients with systemic lupus erythematosus and fever. Lupus 2018; 27:930-938. [PMID: 29308729 DOI: 10.1177/0961203317751860] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Systemic lupus erythematosus (SLE) is a systemic autoimmune disease with various clinical manifestations and serologic markers. In this study, we analyzed nine polyamine (PA) profiles of plasma from patients with SLE and healthy controls (HCs), and the relationship between the PA profiles and disease activity. PA alterations in plasma of 44 patients with SLE and fever were investigated using gas chromatography mass spectrometry (GC-MS) in selected ion monitoring mode using N-ethoxycarbonyl/ N-pentafluoropropionyl derivatives, and compared with those of 43 HCs. Patients with SLE and HCs showed differences in five of nine PA profiles. Among five changed PA levels, four PAs, namely N1-acetylcadaverine, spermidine, N1-acetylspermidine, and spermine, were dramatically decreased. However, the level of cadaverine was increased in patients with SLE. In the partial correlation with PA profiles and disease activity markers of SLE, several disease activity markers and nutritional markers were correlated with cadaverine, spermidine, and N 8-acetylspermidine. Thus, our results provide a comprehensive understanding of the relationship between PA metabolomics and disease activity markers in patients with SLE.
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Affiliation(s)
- H A Kim
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
| | - H S Lee
- 2 College of Pharmacy, 65380 Sunchon National University , Suncheon, Republic of Korea
| | - T H Shin
- 3 Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - J Y Jung
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
| | - W Y Baek
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
| | - H J Park
- 3 Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - G Lee
- 3 Department of Physiology, Ajou University School of Medicine, Suwon, Republic of Korea
| | - M J Paik
- 2 College of Pharmacy, 65380 Sunchon National University , Suncheon, Republic of Korea
| | - C H Suh
- 1 Department of Rheumatology and BK21 Division of Cell Transformation and Restoration, 37977 Ajou University School of Medicine , Suwon, Republic of Korea
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Kim HA, Hwang UJ, Jung SH, Ahn SH, Kim JH, Kwon OY. Comparison of shoulder strength in males with and without myofascial trigger points in the upper trapezius. Clin Biomech (Bristol, Avon) 2017; 49:134-138. [PMID: 28934634 DOI: 10.1016/j.clinbiomech.2017.09.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 08/31/2017] [Accepted: 09/01/2017] [Indexed: 02/07/2023]
Abstract
BACKGROUND This study was conducted in order to compare the strength of scapular elevator and shoulder abductor with and without restricted scapular elevation between male subjects with and without myofascial trigger points in the upper trapezius. METHODS In total, 15 male subjects with myofascial trigger points, and 15age- and weight-matched male subjects without myofascial trigger points in the upper trapezius. Each subject was measured in the strength of maximum isometric scapular elevation and shoulder abduction with and without restricted scapular elevation. Maximum isometric contractions were measured using the Smart KEMA strength measurement system. Independent t-tests were used to compare shoulder strength values between the myofascial trigger points and non- myofascial trigger points groups. FINDING The results showed that shoulder abductor strength in the group with myofascial trigger points (5.64kgf) was significantly lower than in the group without myofascial trigger points (11.96kgf) when scapular elevation was restricted (p<0.05). However, there was no significant difference in the strength of the scapular elevator or shoulder abductor between groups (p>0.05). INTERPRETATION These findings suggest that decreased strength in the shoulder abductor with restricted scapular elevation should be considered in evaluating and treating individuals with myofascial trigger points of the upper trapezius.
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Affiliation(s)
- H A Kim
- Department of Physical Therapy, Graduate School, Yonsei University, Wonju, South Korea
| | - U J Hwang
- Department of Physical Therapy, Graduate School, Yonsei University, Wonju, South Korea..
| | - S H Jung
- Department of Physical Therapy, Graduate School, Yonsei University, Wonju, South Korea..
| | - S H Ahn
- Department of Physical Therapy, Graduate School, Yonsei University, Wonju, South Korea..
| | - J H Kim
- Department of Physical Therapy, Graduate School, Yonsei University, Wonju, South Korea..
| | - O Y Kwon
- Department of Physical Therapy, College of Health Science, Laboratory of Kinetic Ergocise Based on Movement Analysis, Yonsei University, Wonju, South Korea.
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Sung YK, Cho SK, Kim D, Won S, Choi CB, Bang SY, Hong SJ, Kim HA, Koh EM, Lee HS, Suh CH, Yoo DH, Bae SC. Characteristics and outcomes of rheumatoid arthritis patients who started biosimilar infliximab. Rheumatol Int 2017; 37:1007-1014. [DOI: 10.1007/s00296-017-3663-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 01/20/2017] [Indexed: 12/21/2022]
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Lee JW, Lee KE, Park DJ, Kim SH, Nah SS, Lee JH, Kim SK, Lee YA, Hong SJ, Kim HS, Lee HS, Kim HA, Joung CI, Kim SH, Lee SS. Determinants of quality of life in patients with fibromyalgia: A structural equation modeling approach. PLoS One 2017; 12:e0171186. [PMID: 28158289 PMCID: PMC5291376 DOI: 10.1371/journal.pone.0171186] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/17/2017] [Indexed: 11/24/2022] Open
Abstract
Objective Health-related quality of life (HRQOL) in patients with fibromyalgia (FM) is lower than in patients with other chronic diseases and the general population. Although various factors affect HRQOL, no study has examined a structural equation model of HRQOL as an outcome variable in FM patients. The present study assessed relationships among physical function, social factors, psychological factors, and HRQOL, and the effects of these variables on HRQOL in a hypothesized model using structural equation modeling (SEM). Methods HRQOL was measured using SF-36, and the Fibromyalgia Impact Questionnaire (FIQ) was used to assess physical dysfunction. Social and psychological statuses were assessed using the Beck Depression Inventory (BDI), the State-Trait Anxiety Inventory (STAI), the Arthritis Self-Efficacy Scale (ASES), and the Social Support Scale. SEM analysis was used to test the structural relationships of the model using the AMOS software. Results Of the 336 patients, 301 (89.6%) were women with an average age of 47.9±10.9 years. The SEM results supported the hypothesized structural model (χ2 = 2.336, df = 3, p = 0.506). The final model showed that Physical Component Summary (PCS) was directly related to self-efficacy and inversely related to FIQ, and that Mental Component Summary (MCS) was inversely related to FIQ, BDI, and STAI. Conclusions In our model of FM patients, HRQOL was affected by physical, social, and psychological variables. In these patients, higher levels of physical function and self-efficacy can improve the PCS of HRQOL, while physical function, depression, and anxiety negatively affect the MCS of HRQOL.
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Affiliation(s)
- Jeong-Won Lee
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Hospital & Medical School, Gwangju, Korea
| | - Kyung-Eun Lee
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Hospital & Medical School, Gwangju, Korea
| | - Dong-Jin Park
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Hospital & Medical School, Gwangju, Korea
| | - Seong-Ho Kim
- Division of Rheumatology, Department of Internal Medicine, Inje University Haeundae Paik Hospital, Busan, Korea
| | - Seong-Su Nah
- Division of Rheumatology, Department of Internal Medicine, Soonchunhyang University, College of Medicine, Cheonan, Korea
| | - Ji Hyun Lee
- Division of Rheumatology, Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Seong-Kyu Kim
- Division of Rheumatology, Department of Internal Medicine, Catholic University of Daegu, School of Medicine, Daegu, Korea
| | - Yeon-Ah Lee
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Seung-Jae Hong
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Hyun-Sook Kim
- Division of Rheumatology, Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Hye-Soon Lee
- Division of Rheumatology, Department of Internal Medicine, Hanyang University College of Medicine and the Hospital for Rheumatic Diseases, Seoul, Korea
| | - Hyoun Ah Kim
- Division of Rheumatology, Department of Internal Medicine, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea
| | - Chung-Il Joung
- Division of Rheumatology, Department of Internal Medicine, Konyang University Medical School, Daejeon, Korea
| | - Sang-Hyon Kim
- Division of Rheumatology, Department of Internal Medicine, School of Medicine, Keimyung University, Daegu, Korea
| | - Shin-Seok Lee
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Hospital & Medical School, Gwangju, Korea
- * E-mail:
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Park DJ, Kim SH, Nah SS, Lee JH, Kim SK, Lee YA, Hong SJ, Kim HS, Lee HS, Kim HA, Joung CI, Kim SH, Lee SS. Polymorphisms of theTRPV2andTRPV3genes associated with fibromyalgia in a Korean population. Rheumatology (Oxford) 2016; 55:1518-27. [DOI: 10.1093/rheumatology/kew180] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Indexed: 12/23/2022] Open
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Kang JH, Park DJ, Kim SH, Nah SS, Lee JH, Kim SK, Lee YA, Hong SJ, Kim HS, Lee HS, Kim HA, Joung CI, Kim SH, Lee SS. Severity of fibromyalgia symptoms is associated with socioeconomic status and not obesity in Korean patients. Clin Exp Rheumatol 2016; 34:S83-S88. [PMID: 26812252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2015] [Accepted: 01/07/2016] [Indexed: 06/05/2023]
Abstract
OBJECTIVES Several studies conducted in Western countries have shown that obese or overweight patients with fibromyalgia (FM) exhibit more severe symptoms than patients of normal weight. However, there has been no study on the relationship between obesity and FM symptom severity in Asian patients. In this study, we evaluated the association between obesity, and other related factors such as socioeconomic status (SES), and FM symptom severity in Korean patients. METHODS A total of 343 participants were enrolled in this prospective cohort study, which used a nationwide survey of FM patients who were followed on an annual basis. We investigated health-related quality of life (QoL) and associated factors, such as demographic characteristics, SES, and physical and psychological function. The FM patients were assessed using the following self-reported questionnaires: the Medical Outcomes Study Short-Form Health Survey, the Fibromyalgia Impact Questionnaire, the Brief Fatigue Inventory, the Beck Depression Inventory, the State-Trait Anxiety Inventory, the Self-Efficacy Scale, and the Social Support Scale. RESULTS Of the 343 patients, 76 (22.1%) were obese; these patients did not differ from the non-obese patients in terms of tender points or self-reported questionnaire scores. FM patients with lower SES - as indexed by unemployment, lower income, and education levels - had more severe symptoms, and poorer QoL and function compared to those with higher SES. CONCLUSIONS In contrast to Western patients, symptom severity in Korean FM patients is associated with SES, but not with obesity.
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Affiliation(s)
- Ji-Hyoun Kang
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School & Hospital, Gwangju, Korea
| | - Dong-Jin Park
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School & Hospital, Gwangju, Korea
| | - Seong-Ho Kim
- Department of Internal Medicine, Inje University Haeundae Paik Hospital, Busan, Korea
| | - Seong-Su Nah
- Department of Internal Medicine, Soonchunhyang University, College of Medicine, Cheonan, Korea
| | - Ji Hyun Lee
- Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Seong-Kyu Kim
- Department of Internal Medicine, Catholic University of Daegu, School of Medicine, Daegu, Korea
| | - Yeon-Ah Lee
- Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Seung-Jae Hong
- Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - Hyun-Sook Kim
- Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - Hye-Soon Lee
- Hanyang University College of Medicine and the Hospital for Rheumatic Diseases, Seoul, Korea
| | - Hyoun Ah Kim
- Department of Allergy and Rheumatology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea
| | - Chung-Il Joung
- Department of Internal Medicine, Konyang University Medical School, Daejeon, Korea
| | - Sang-Hyon Kim
- Departments of Internal Medicine, School of Medicine, Keimyung University, Daegu, Korea
| | - Shin-Seok Lee
- Division of Rheumatology, Department of Internal Medicine, Chonnam National University Medical School & Hospital, Gwangju, Korea.
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Park DJ, Kim SH, Nah SS, Lee JH, Kim SK, Lee YA, Hong SJ, Kim HS, Lee HS, Kim HA, Joung CI, Kim SH, Lee SS. Association between catechol-O-methyl transferase gene polymorphisms and fibromyalgia in a Korean population: A case-control study. Eur J Pain 2016; 20:1131-9. [PMID: 26849490 DOI: 10.1002/ejp.837] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/23/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND Although polymorphisms of the catechol-O-methyl transferase (COMT) gene have been implicated in altered pain sensitivity, results concerning the association between COMT gene polymorphisms and fibromyalgia (FM) are equivocal. We assessed the associations between COMT single-nucleotide polymorphisms (SNP) and FM risk and symptom severity. METHODS In total, 409 FM patients and 423 controls were enrolled. Alleles and genotypes at five positions [rs6269 (A>G), rs4633 (C>T), rs4818 (C>G), rs4680 (C>G) and rs165599 (A>G)] in the COMT gene were genotyped from peripheral blood DNA. RESULTS Alleles and genotypes of the rs4818 COMT gene polymorphism were significantly associated with increased susceptibility to FM. The rs4818 GG genotype was more strongly associated with FM compared to the CC genotype (OR = 1.680, 95% CI: 1.057, 2.672, p = 0.027). Although allele and genotype frequencies did not differ among groups, the rs4633 CT genotype was not associated with the presence of FM following adjustment for age and sex (OR = 0.745; 95% CI: 0.558, 0.995; p = 0.046). However, no association was observed between clinical measures and individual COMT SNPs. In haplotype analysis, there was a significant association between ACG haplotype and FM susceptibility sex (OR = 2.960, 95% CI: 1.447, 6.056, p = 0.003) and the number of tender points (p = 0.046). CONCLUSIONS This large-scale study suggests that polymorphisms of the COMT gene may be associated with FM risk and pain sensitivity in Korean FM patients. However, our results differed to those of previous studies, suggesting ethnic variation in COMT gene polymorphisms in FM. WHAT DOES THIS STUDY ADD By contrast to Caucasian and Latin-American populations, the COMT gene polymorphisms are associated with FM risk and pain sensitivity in Korean FM patients, suggesting ethnic variation in COMT gene polymorphisms.
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Affiliation(s)
- D J Park
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - S H Kim
- Department of Internal Medicine, Inje University Haeundae Paik Hospital, Busan, Korea
| | - S S Nah
- Department of Internal Medicine, Soonchunhyang University, College of Medicine, Cheonan, Korea
| | - J H Lee
- Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - S K Kim
- Department of Internal Medicine, Catholic University of Daegu, School of Medicine, Daegu, Korea
| | - Y A Lee
- Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - S J Hong
- Department of Internal Medicine, School of Medicine, Kyung Hee University, Seoul, Korea
| | - H S Kim
- Department of Internal Medicine, Soonchunhyang University Seoul Hospital, Seoul, Korea
| | - H S Lee
- Hanyang University College of Medicine and the Hospital for Rheumatic Diseases, Seoul, Korea
| | - H A Kim
- Department of Allergy and Rheumatology, Ajou University Hospital, Ajou University School of Medicine, Suwon, Korea
| | - C I Joung
- Department of Internal Medicine, Konyang University Medical School, Daejeon, Korea
| | - S H Kim
- Departments of Internal Medicine, School of Medicine, Keimyung University, Daegu, Korea
| | - S S Lee
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, Korea
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Choi HJ, Lee CH, Lee JH, Yoon BY, Kim HA, Suh CH, Choi ST, Song JS, Joo H, Choi SJ, Lee JS, Shin K, Jun JB, Baek HJ. Seasonality of gout in Korea: a multicenter study. J Korean Med Sci 2015; 30:240-4. [PMID: 25729244 PMCID: PMC4330476 DOI: 10.3346/jkms.2015.30.3.240] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Accepted: 10/10/2014] [Indexed: 11/20/2022] Open
Abstract
The object of this study was to evaluate the seasonality of gout in Korea. We retrospectively examined data from 330 patients seen at nine rheumatology clinics, treated with urate lowering therapy (ULT) more than one year after stopping prophylactic medication. Demographic data, clinical and laboratory features, and seasonality of gout onset and flares were collected. Season was classified in three-month intervals. The mean age was 52.2 yr and mean disease duration was 26.8 months. The male to female count was 318:12. The onset of acute gouty attacks was obtained in 256 patients. Gout developed most commonly in summer season (36.7%) (P<0.001) and in June (15.6%, P=0.002). During ULT, there were 147 (male 97.3%) gout flares. Although there was no statistically significant difference, gout flares were more common in summer (30.6%). Aggravating factors were identified in 57 flares: alcohol (72.0%) was most common. In the patients who attained target serum uric acid (<6 mg/dL) at the end of prophylaxis, gout flares were high in fall (35.8%) and September (17.0%). In Korea, the summer is most common season of gout onset and there is a tendency for gout flares to increase during ULT in summer/fall season.
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Affiliation(s)
- Hyo Jin Choi
- Division of Rheumatology, Department of Internal Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Chan Hee Lee
- Division of Rheumatology, Department of Internal Medicine, NHIS Ilsan Hospital, Goyang, Korea
| | - Joo Hyun Lee
- Division of Rheumatology, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Bo Young Yoon
- Division of Rheumatology, Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Hyoun Ah Kim
- Division of Rheumatology, Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Chang Hee Suh
- Division of Rheumatology, Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Sang Tae Choi
- Division of Rheumatology, Department of Internal Medicine, Choong Ang University Hospital, Seoul, Korea
| | - Jung Soo Song
- Division of Rheumatology, Department of Internal Medicine, Choong Ang University Hospital, Seoul, Korea
| | - HoYeon Joo
- Division of Rheumatology, Department of Internal Medicine, Inha University Hospital, Incheon, Korea
| | - Sung Jae Choi
- Division of Rheumatology, Department of Internal Medicine, Korea University Ansan Hospital, Ansan, Korea
| | - Ji Soo Lee
- Division of Rheumatology, Department of Internal Medicine, Ewha Womans University Medical Center, Seoul, Korea
| | - KiChul Shin
- Division of Rheumatology, Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul, Korea
| | - Jae-Bum Jun
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Han Joo Baek
- Division of Rheumatology, Department of Internal Medicine, Gachon University Gil Hospital, Incheon, Korea
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Choi M, Hyun MK, Choi S, Tchoe HJ, Lee SY, Son KM, Jung YO, Kim HA. Comparative Effectiveness of Biological Agents With Diseases Modifying Anti-Rheumatic Drugs For Methotrexate Failure Rheumatoid Arthritis Patients: A Baysian Mixed Treatment Comparison. Value Health 2014; 17:A373-A374. [PMID: 27200806 DOI: 10.1016/j.jval.2014.08.2577] [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] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
- M Choi
- National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - M K Hyun
- National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - S Choi
- National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - H J Tchoe
- National Evidence-based Healthcare Collaborating Agency, Seoul, South Korea
| | - S Y Lee
- Hallym University, Chuncheon, South Korea
| | - K M Son
- Hallym University, Chuncheon, South Korea
| | - Y O Jung
- Hallym University, Chuncheon, South Korea
| | - H A Kim
- Hallym University, Chuncheon, South Korea
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15
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Choi HJ, Lee CH, Lee JH, Yoon BY, Kim HA, Suh CH, Choi ST, Song JS, Joo HY, Choi SJ, Lee JS, Shin KC, Baek HJ. Current gout treatment and flare in South Korea: Prophylactic duration associated with fewer gout flares. Int J Rheum Dis 2014; 20:497-503. [DOI: 10.1111/1756-185x.12422] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Hyo Jin Choi
- Division of Rheumatology; Department of Internal Medicine; Gachon University Gil Hospital; Incheon Korea
| | - Chan Hee Lee
- Division of Rheumatology; Department of Internal Medicine; NHIS Ilsan Hospital; Goyang-si Korea
| | - Joo Hyun Lee
- Division of Rheumatology; Department of Internal Medicine; Inje University Ilsan Paik Hospital; Ilsan Korea
| | - Bo Young Yoon
- Division of Rheumatology; Department of Internal Medicine; Inje University Ilsan Paik Hospital; Ilsan Korea
| | - Hyoun Ah Kim
- Division of Rheumatology; Department of Internal Medicine; Ajou University School of Medicine; Suwon Korea
| | - Chang Hee Suh
- Division of Rheumatology; Department of Internal Medicine; Ajou University School of Medicine; Suwon Korea
| | - Sang Tae Choi
- Division of Rheumatology; Department of Internal Medicine; Choong Ang University Hospital; Seoul Korea
| | - Jung Soo Song
- Division of Rheumatology; Department of Internal Medicine; Choong Ang University Hospital; Seoul Korea
| | - Ho Yeon Joo
- Division of Rheumatology; Department of Internal Medicine; Inha University Hospital; Incheon Korea
| | - Sung Jae Choi
- Division of Rheumatology; Department of Internal Medicine; Korea University Ansan Hospital; Ansan Korea
| | - Ji Soo Lee
- Division of Rheumatology; Department of Internal Medicine; Ewha Womans University Medical Center; Incehon Korea
| | - Kee Chul Shin
- Division of Rheumatology; Department of Internal Medicine; SNU Boramae Medical Center; Seoul Korea
| | - Han Joo Baek
- Division of Rheumatology; Department of Internal Medicine; Gachon University Gil Hospital; Incheon Korea
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Lee SK, Hwang SH, Park JH, Song GW, Park SY, Kim SR, Jung JY, Bae CB, Kim HA, Jeong SH, Yim HE, Han JH, Suh CH. A Case of Multiple Myeloma Presenting Acute Renal Failure in a Patient with Rheumatoid Arthritis. J Rheum Dis 2014. [DOI: 10.4078/jrd.2014.21.5.266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Seung Kyung Lee
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Sun Hyuk Hwang
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Joo Han Park
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Ga Won Song
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Sun Young Park
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Sei Rhan Kim
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Ju Yang Jung
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Chang Bum Bae
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Hyoun Ah Kim
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Seong Hyun Jeong
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
| | - Hyun Ee Yim
- Department of Pathology, Ajou University School of Medicine, Suwon, Korea
| | - Jae Ho Han
- Department of Pathology, Ajou University School of Medicine, Suwon, Korea
| | - Chang Hee Suh
- Department of Internal Medicine, Ajou University School of Medicine, Suwon, Korea
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Won S, Sung YK, Cho SK, Choi CB, Koh EM, Kim SK, Kim J, Kim TH, Kim HA, Nah SS, Bang SY, Suh CH, Shim SC, Yoo DH, Yoon BY, Lee SH, Lee SW, Lee SS, Lee YA, Lee J, Lee J, Lee HS, Lim MK, Jun JB, Jeon CH, Jung YO, Chung WT, Cha HS, Choe JY, Hong SJ, Bae SC. Prediction for TNF Inhibitor Users in RA Patients According to Reimbursement Criteria Based on DAS28. J Rheum Dis 2014. [DOI: 10.4078/jrd.2014.21.2.64] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Soyoung Won
- Clinical Research Center for Rheumatoid Arthritis (CRCRA), Seoul, Korea
| | - Yoon-Kyoung Sung
- Clinical Research Center for Rheumatoid Arthritis (CRCRA), Seoul, Korea
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Soo-Kyung Cho
- Clinical Research Center for Rheumatoid Arthritis (CRCRA), Seoul, Korea
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Chan-Bum Choi
- Clinical Research Center for Rheumatoid Arthritis (CRCRA), Seoul, Korea
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Eun-Mi Koh
- Department of Rheumatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - Seong-Kyu Kim
- Department of Rheumatology, Catholic University of Daegu, School of Medicine, Daegu, Korea
| | - Jinseok Kim
- Department of Rheumatology, Jeju National University Hospital, Jeju, Korea
| | - Tae-Hwan Kim
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Hyoun Ah Kim
- Department of Rheumatology, Ajou University Hospital, Suwon, Korea
| | - Seong-Su Nah
- Department of Rheumatology, Soonchunhyang University Cheonan Hospital, Cheonan, Korea
| | - So-Young Bang
- Department of Rheumatology, Hanyang University Guri Hospital, Guri, Korea
| | - Chang-Hee Suh
- Department of Rheumatology, Ajou University Hospital, Suwon, Korea
| | - Seung Cheol Shim
- Department of Rheumatology, Chungnam National University Hospital, Daejeon, Korea
| | - Dae-Hyun Yoo
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Bo Young Yoon
- Department of Rheumatology, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Sang-Hoon Lee
- Department of Rheumatology, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Sung Won Lee
- Department of Rheumatology, Dong-A University Hospital, Busan, Korea
| | - Shin-Seok Lee
- Department of Rheumatology, Chonnam National University Medical School and Hospital, Gwangju, Korea
| | - Yeon-Ah Lee
- Department of Rheumatology, Kyung Hee University Hospital, Seoul, Korea
| | - Jaejoon Lee
- Department of Rheumatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - Jisoo Lee
- Department of Rheumatology, Ewha Womans University Mokdong Hospital, Seoul, Korea
| | - Hye-Soon Lee
- Department of Rheumatology, Hanyang University Guri Hospital, Guri, Korea
| | - Mi Kyoung Lim
- Department of Rheumatology, Eulji University Hospital, Daejeon, Korea
| | - Jae-Bum Jun
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
| | - Chan Hong Jeon
- Department of Rheumatology, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Young Ok Jung
- Department of Rheumatology, Hallym University College of Medicine, Seoul, Korea
| | - Won Tae Chung
- Department of Rheumatology, Dong-A University Hospital, Busan, Korea
| | - Hoon-Suk Cha
- Department of Rheumatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea
| | - Jung-Yoon Choe
- Department of Rheumatology, Catholic University of Daegu, School of Medicine, Daegu, Korea
| | - Seung-Jae Hong
- Department of Rheumatology, Kyung Hee University Hospital, Seoul, Korea
| | - Sang-Cheol Bae
- Clinical Research Center for Rheumatoid Arthritis (CRCRA), Seoul, Korea
- Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul, Korea
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Kim IJ, Kim DH, Jung JY, Song YW, Guermazi A, Crema MD, Hunter DJ, Kim HA. Association between bone marrow lesions detected by magnetic resonance imaging and knee pain in community residents in Korea. Osteoarthritis Cartilage 2013; 21:1207-13. [PMID: 23973132 DOI: 10.1016/j.joca.2013.05.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 04/10/2013] [Accepted: 05/01/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To describe the frequency of bone marrow lesions (BMLs) detected by magnetic resonance imaging (MRI), and to examine the association of BMLs with knee pain severity in community residents in Korea. METHODS Participants were randomly chosen from the population-based Hallym Aging Study, irrespective of whether they had knee osteoarthritis (OA) or pain. Demographic and knee pain data were obtained by questionnaire. Radiographic evaluations consisted of weight-bearing knee anteroposterior radiographs and 1.5-T MRI scans. MRI was performed in the dominant knees of subjects without knee pain and in the more symptomatic knees of subjects with knee pain. BMLs were graded according to the whole-organ MRI score. RESULTS The mean age of the 358 study subjects was 71.8 years, and 34.5% of subjects had radiographically detected knee OA. The prevalences of BMLs and large BMLs in the tibiofemoral compartments were 80.3% and 40.4%, respectively. After adjusting for age, sex, and body mass index, total and medial compartment BML scores were significantly associated with the presence of knee pain, and the association was stronger as the summary score for BML increased. In proportional regression analysis, knee pain severity increased with BML severity in any compartment and in the medial compartment. CONCLUSION BMLs detected by MRI were highly prevalent in this elderly Asian population. BMLs were significantly linked to knee pain, and BML severity correlated with knee pain severity. BMLs may be important surrogate targets for monitoring pain and structure modification in OA therapeutics.
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Affiliation(s)
- I J Kim
- Department of Internal Medicine, Hallym University, Kangdong Sacred Heart Hospital, Seoul, Republic of Korea
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Hong CH, Jo YJ, Kim HA, Park MJ, Kwak JS. Improved electrical and optical properties of ITO/Ag/ITO films by using electron beam irradiation and their application to ultraviolet light-emitting diode as highly transparent p-type electrodes. J Nanosci Nanotechnol 2012; 12:4163-4167. [PMID: 22852364 DOI: 10.1166/jnn.2012.5934] [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
We have investigated the effect of insertion of a Ag layer in ITO film as well as electron beam irradiation to the multilayer films on the electrical and optical properties of the ITO-based multilayer deposited by magnetron sputtering method at room temperature. Inserting a very thin Ag layer between ITO layers resulted in a significant decrease in sheet resistance and increased the optical band gap of the ITO/Ag/ITO multilayer to 4.35 eV, followed by a high transparency of approximately 80% at a wavelength of 375 nm. We have also fabricated ultraviolet light-emitting diodes (LED) by using the ITO/Ag/ITO p-type electrode with/without electron beam irradiation. The results show that the UV-LEDs having ITO/Ag/ITO p-electrode with electron beam irradiation produced 19% higher optical output power due to the low absorption of light in the p-type electrode.
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Affiliation(s)
- C H Hong
- Department of Printed Electronics Engineering (WCU), Sunchon National University, Jeonnam 540-742, Korea
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Sung YK, Cho SK, Choi CB, Park SY, Shim J, Ahn JK, Bang SY, Cha HS, Choe JY, Chung WT, Her M, Hong SJ, Hong YK, Joung CI, Jun JB, Jung YO, Kang YM, Kim DY, Kim HR, Kim HA, Kim J, Kim SK, Kim SI, Kim TH, Kim TJ, Koh E, Lee CK, Lee HS, Lee J, Lee SH, Lee SH, Lee SS, Lee SW, Lee YA, Nah SS, Park SH, Sheen DH, Shim SC, Gyu Song G, Suh CH, Uhm WS, Yoo DH, Yoo WH, Yoon BY, Bae SC. Korean Observational Study Network for Arthritis (KORONA): establishment of a prospective multicenter cohort for rheumatoid arthritis in South Korea. Semin Arthritis Rheum 2011; 41:745-51. [PMID: 22154221 DOI: 10.1016/j.semarthrit.2011.09.007] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2011] [Revised: 09/21/2011] [Accepted: 09/23/2011] [Indexed: 10/14/2022]
Abstract
OBJECTIVES The object of this study was to introduce the KORean Observational study Network for Arthritis (KORONA) registry with an emphasis on the design of the Korean rheumatoid arthritis (RA) national database, as well as to provide an overview of the RA patients who are currently registered in KORONA. METHODS The KORONA was established in July 2009 by the Clinical Research Center for Rheumatoid Arthritis (CRCRA) in South Korea. KORONA is based on a prospective protocol and standard, defined data collection instruments. Demographic and clinical features, laboratory and radiologic data, health-related outcomes, treatment side effects, resource utilization, and health behaviors of the RA cohort patients are recorded in a database. RESULTS A total of 23 institutions, which are about 38% of the rheumatologic departments at tertiary academic hospitals across South Korea, are part of KORONA. The quality control of data collection and management has been performed through annual monitoring and auditing, staff training, and providing standard operation protocol by the executive committee of CRCRA. As of 31 December 2010, 4721 patients with established RA were included in KORONA, because an annual survey had started to be performed in July 2010. CONCLUSIONS KORONA is the first nationwide Korean RA-specific cohort and it will provide valuable "real-world" information for Korean RA patients.
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Affiliation(s)
- Yoon-Kyoung Sung
- Hanyang University Hospital for Rheumatic Diseases, Seoul, South Korea
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Choi SA, Lee SS, Jung IH, Kim HA, Byun JH, Lee MG. The effect of gadoxetic acid enhancement on lesion detection and characterisation using T₂ weighted imaging and diffusion weighted imaging of the liver. Br J Radiol 2010; 85:29-36. [PMID: 21123305 DOI: 10.1259/bjr/12929687] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
OBJECTIVES To evaluate the effect of gadoxetic acid enhancement on the detection and characterisation of focal hepatic lesions on T(2) weighted and diffusion weighted (DW) images. METHODS A total of 63 consecutive patients underwent T(2) weighted and DW imaging before and after gadoxetic acid enhancement. Two blinded readers independently identified all of the focal lesions using a five-point confidence scale and characterised each lesion using a three-point scale: 1, non-solid; 2, indeterminate; and 3, solid. For both T(2) weighted and DW imaging, the accuracies for detecting focal lesions were compared using the free-response receiver operating characteristic analysis; the accuracies for lesion characterisation were compared using the McNemar test between non-enhanced and gadoxetic acid-enhanced image sets. For hepatic lesions ≥ 1 cm, the lesion-to-liver contrast-to-noise ratio (CNR) and the apparent diffusion coefficient (ADC) were compared in the non-enhanced and enhanced image sets using the generalised estimating equations. RESULTS For both T(2) weighted and DW images, the accuracies for detecting focal lesions (p ≥ 0.52) and those for lesion characterisation (p ≥ 0.63) did not differ significantly between the non-enhanced and enhanced image sets. The lesion-to-liver CNR was significantly higher on enhanced DW images than on non-enhanced DW images (p=0.02), although the difference was not significant for T(2) weighted imaging (p=0.65). The mean ADC values of lesions did not differ significantly on enhanced and non-enhanced DW imaging (p=0.75). CONCLUSION The acquisition of T(2) weighted and DW images after administration of gadoxetic acid has no significant effect on the detection or characterisation of focal hepatic lesions, although it improves the lesion-to-liver CNR on DW images.
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Affiliation(s)
- S A Choi
- Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Republic of Korea
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Kim J, Koh JK, Lee EY, Park JA, Kim HA, Lee EB, Garlanda C, Cotena A, Song YW. Serum levels of soluble triggering receptor expressed on myeloid cells-1 (sTREM-1) and pentraxin 3 (PTX3) as markers of infection in febrile patients with systemic lupus erythematosus. Clin Exp Rheumatol 2009; 27:773-778. [PMID: 19917159] [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: 05/28/2023]
Abstract
OBJECTIVE To investigate the role of sTREM-1 and PTX3 as markers of infection in febrile patients with SLE. METHODS In febrile (body temperature > or =38 degrees C) patients with SLE, blood samples of day 0, 1, 2, and 14 after presentation were drawn and relevant clinical data were collected. The patients were allocated to an infection group (n=19) or disease flare group (n=14). Serum levels of sTREM-1 and PTX3 were measured by ELISA using the serum samples of SLE patients and age- and sex-matched healthy controls (n=31). RESULTS A total of 33 febrile episodes occurred in 32 SLE patients (19 infections, 14 flares) were studied. sTREM-1 levels on day 0 were significantly higher in the infection group than in the flare group (109.9 pg/ml (median) vs. 48.0 pg/ml, p=0.002), but PTX3 levels were similar in these two groups. The difference of sTREM-1 levels between infection group and flare group was persistent on day 1 and 2 (day 1, p=0.007; day 2, p=0.034). The highest diagnostic value (sensitivity=1.0, specificity=0.664) of sTREM-1 was obtained at the threshold value of 53.2 pg/mL. CONCLUSION Serum sTREM-1 levels were significantly higher in the infection group than in the flare group of febrile SLE patients. Our findings suggest that serum sTREM-1 levels could be used to determine whether SLE patients have contracted an infection.
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Affiliation(s)
- J Kim
- Department of Internal Medicine, Seoul National University Hospital, Korea
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Cho NH, Kim S, Kwon DJ, Kim HA. The prevalence of hallux valgus and its association with foot pain and function in a rural Korean community. ACTA ACUST UNITED AC 2009; 91:494-8. [PMID: 19336810 DOI: 10.1302/0301-620x.91b4.21925] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
There are few data available regarding the association between hallux valgus and pain or functional limitation. We determined the prevalence of hallux valgus in a rural Korean population aged between 40 and 69 years, and its association with pain and function. A total of 563 subjects was examined using the foot health status questionnaire, the Short Form-36 questionnaire and weight-bearing anteroposterior radiographs. Hallux valgus was present in 364 subjects (64.7%). It did not significantly correlate with age and was more common in women. Of the 364 subjects, 48 (13.2%) had moderate or greater deformity, defined as a hallux valgus angle > 25 degrees . This was significantly associated with pain, worse function and worse foot health. The putative risk factors associated with painful hallux valgus were female gender, low educational attainment and the presence of pain in the knee.
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Affiliation(s)
- N H Cho
- Department of Preventive Medicine, Ajou University School of Medicine, 5 Wonchon-Dong, Youngtong-Gu, Suwon 442-749, Korea
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Kim HA, Koh SH, Lee B, Kim IJ, Seo YI, Song YW, Hunter DJ, Zhang Y. Low rate of total hip replacement as reflected by a low prevalence of hip osteoarthritis in South Korea. Osteoarthritis Cartilage 2008; 16:1572-5. [PMID: 18558502 PMCID: PMC4373077 DOI: 10.1016/j.joca.2008.04.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Accepted: 04/27/2008] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We attempted to estimate the rate of total hip replacement (THR) using a national database and the prevalence of hip osteoarthritis (OA) from the reading of intravenous pyelograms (IVPs) in a Korean population. MATERIALS Reimbursement records from all hospitals in South Korea were extracted from the Health Insurance Review Agency (HIRA) database. Records with both the procedure code corresponding to THR and containing the diagnosis code for hip OA were selected. We estimated the age- and sex-specific rates of THR from 2002 to 2006. Hip joints from 580 subjects older than 70 years old who underwent an IVP were assessed for the presence of OA. RESULTS The rate of THR increased with age, reaching a peak over the age of 65-69 years, with the age-standardized risk ratios in women vs men of approximately 1.5. Although the rate of THR increased over the 5-year study period, it was significantly lower than that of total knee replacement (TKR) in Korean population (THR vs TKR 1:15.9). The prevalence of hip OA in the IVP cohort was 1.2% (1.7% for men and 0.7% for women). CONCLUSION The rate of THR was significantly lower than that of TKR in Korean population. Hip OA prevalence among the IVP subjects was 1.2%. Further studies on factors that account for the low prevalence of hip OA among Asians need to be conducted.
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Affiliation(s)
- H A Kim
- Hallym University Sacred Heart Hospital, Anyang, Republic of Korea.
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Yoo KH, Lee SH, Kim HJ, Sung KW, Jung HL, Cho EJ, Park HK, Kim HA, Koo HH. The impact of post-thaw colony-forming units-granulocyte/macrophage on engraftment following unrelated cord blood transplantation in pediatric recipients. Bone Marrow Transplant 2007; 39:515-21. [PMID: 17334379 DOI: 10.1038/sj.bmt.1705629] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [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: 11/09/2022]
Abstract
We retrospectively reviewed the engraftment kinetics following unrelated cord blood transplantation (CBT) in association with the post-thaw colony-forming units-granulocyte/macrophage (CFU-GM) number along with the numbers of total nucleated cells (TNC), CD34(+) cells and CD3(+) cells. A total of 71 cord blood units prepared for 53 patients (double-unit CBT in 18 patients) were evaluated. Either the number of infused CFU-GM or CD34(+) cells was significantly lower in patients who failed to achieve engraftment (P=0.028 and 0.005, respectively). Post-thaw CFU-GM, TNC and CD34(+) cells correlated with the speed of neutrophil engraftment (P=0.004, 0.037 and 0.004, respectively), whereas only CFU-GM showed a significant correlation with platelet engraftment (r=-0.385, P=0.024). In double-unit transplants, the number of CFU-GM was the only significant factor predicting engraftment of the predominating unit (P=0.006). We conclude that the post-thaw CFU-GM number is a reliable predictor of rapid engraftment after CBT as well as of the predominating unit in double-unit transplants. Thus, it would be important to perform post-thaw CFU-GM assay on cryopreserved aliquots from several candidate cord blood units in advance before CBT to avoid selecting the unit that might possess a low clonogenic potential.
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Affiliation(s)
- K H Yoo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Abstract
Osteoarthritis (OA) is the most common chronic joint disease in the elderly population, causing significant pain and disability. Because the cardinal feature of OA is a progressive loss of articular cartilage, a great portion of the research endeavour into the pathogenesis of OA has been focused on the regulation of matrix synthesis and degradation. The phenotypic stability and survival of the chondrocytes are essential for the maintenance of a proper cartilage matrix. This has lead to the long-standing assumption that cell death is a central feature in OA cartilage degeneration. The important role of apoptosis in OA has been demonstrated in in vitro and in vivo models. However, it should be noted that the relative contribution of apoptotic cell death in the pathogenesis of OA is still difficult to assess because of the chronic nature of the disease process. Therefore, the apoptosis of chondrocytes seems to be a potential target for therapeutic interventions in OA. The death receptor, mitochondrial and endoplasmic reticulum pathways are the major cellular pathways of apoptosis. Of all these elements involved in the apoptosis of chondrocytes, caspase inhibition has been studied with the most detail. Other molecules with the capacity to modulate mitochondria function, phosphatase (PP-1A/B) activity and pro-apoptosis stimuli (NO, prostaglandins, cytokines, ROS) could be excellent targets to block apoptosis of chondrocytes. Finally, the regulation of the natural inhibitors of apoptosis (c-FLIP, BAR, ARC and HC-gp39) could complement the other strategies to reduce cartilage degradation.
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Affiliation(s)
- H A Kim
- Department of Internal Medicine, Hallym University Sacred Heart Hospital, Kyunggi, Korea
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Kim JA, Kim SM, Choi YS, Yoon D, Lee JS, Park HS, Kim HA, Lee J, Oh HJ, Choi KM. The prevalence and risk factors associated with isolated untreated systolic hypertension in Korea: the Korean National Health and Nutrition Survey 2001. J Hum Hypertens 2006; 21:107-13. [PMID: 17108991 DOI: 10.1038/sj.jhh.1002119] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Although isolated systolic hypertension (ISH) increases the risk of coronary heart disease and stroke, more than any other hypertension subtype, the prevalence and risk factors associated with ISH in the Korean population are not known. The 2001 Korean National Health and Nutrition Survey was a cross-sectional and nationally representative survey conducted in 2001. The prevalence of ISH by age and body mass index (BMI) was examined in 6601 Korean adults over 20 years of age. After adjusting for age, 4.32+/-0.32% of Korean adults had ISH, 5.28+/-0.37% had isolated diastolic hypertension and 5.82+/-0.36% had systolic/diastolic hypertension. The overall prevalence of ISH was found to increase directly with advancing age and increasing BMI. Although the ISH was found to be more common in men overall (4.81+/-0.50% in men, 4.12+/-0.37% in women), it was more common in women over 70 years of age. Independent variables associated with risk for ISH included advanced age, BMI, triglyceride (TG) levels, monthly income and alcohol intake. However, gender, fasting blood glucose, total cholesterol and high-density lipoprotein cholesterol levels, residential area, education level and smoking were found not to be significantly associated with ISH risk. The findings of the present study demonstrate that the prevalence of untreated ISH in Korea was lower than in Western countries. Age, BMI, TG levels, monthly income and alcohol intake were associated with ISH.
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Affiliation(s)
- J A Kim
- Department of Family Medicine, Cheil General Hospital and Women's Health Care Center, Seoul, Korea
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Kim J, Um SJ, Woo J, Kim JY, Kim HA, Jang KH, Kang SA, Lim BO, Kang I, Choue RW, Cho Y. Comparative effect of seeds of Rhynchosia volubilis and soybean on MG-63 human osteoblastic cell proliferation and estrogenicity. Life Sci 2005; 78:30-40. [PMID: 16109431 DOI: 10.1016/j.lfs.2005.03.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2004] [Accepted: 03/03/2005] [Indexed: 11/30/2022]
Abstract
The seeds of Rhynchosia volubilis (SRV) (Leguminosae) and soybean have been used in oriental folk medicine to prevent postmenopausal osteoporosis. Their beneficial effects are caused by a high content of isoflavone, which function as partial agonists or antagonists of estrogen. To compare the estrogenic effects of SRV and soybean on the MG-63 osteoblastic cell proliferation, 70% methanol extracts of SRV or soybean were treated on MG-63 cells. Although biphasic over a concentration range of 0.001 mg/ml-0.1 mg/ml, both SRV and soybean extracts increased MG-63 cell proliferation. However SRV was more effective at increasing the cell proliferation that paralleled with the greater estrogenic effects as determined by estrogen receptor alpha (ERalpha) expression, an estrogenic response element (ERE)-luciferase activity and the selective expression of insulin-like growth factor-I (IGF-I). SRV-induced IGF-I expression resulted from increases in the mRNA levels. Despite the increased expression of ERbeta, ERE activity and IGF-I expression by soybean were lower than those by SRV. Furthermore, the comparable estrogenic effects between SRV and the combined treatment of genistein and daidzein standards at 0.5 x 10(-8) M, which is a concentration of these two isoflavones similar to that of SRV at 0.001 mg/ml, demonstrate that the greater estrogenicity of SRV for MG-63 cell proliferation is mediated by the synergism of low levels of isoflavones for the selective expression of IGF-I.
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Affiliation(s)
- J Kim
- Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University, Hoeki-dong 1, Dongdaemoon-gu, Seoul 130-701, Republic of Korea
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Fox JK, Kim HA, Mishra SR, Myrskog SH, Jofre AM, Segal LR, Kim JB, Steinberg AM. Classical and quantum analysis of one-dimensional velocity selection for ultracold atoms. ACTA ACUST UNITED AC 2005. [DOI: 10.1088/1464-4266/7/9/002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kim HA, Bae YD, Seo YI. Arthritis information on the Web and its influence on patients and physicians: a Korean study. Clin Exp Rheumatol 2004; 22:49-54. [PMID: 15005004] [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: 04/29/2023]
Abstract
OBJECTIVES This study was conducted to assess the contents of Web-sourced arthritis information and to determine its influence on arthritis patients and medical practice in Korea. METHODS An electronic search was conducted using the word "arthritis". Web sites found in the Korean language were critically assessed according to authorship, the type of publication, contents, financial interests, and the type of financial interest. Questionnaire surveys of arthritis patients and rheumatologists were performed to appraise the impact of the arthritis information on the Web. RESULTS Among 138 web sites retrieved, 18.8% were classified as advertisement and 44.9% as having financial interests, such as the promotion of products or services. Among 257 arthritis patients surveyed, 28% reported that they searched for arthritis information on the web, and the parameters significantly associated with Internet searching were a younger age, being employed, and having a higher income and a higher education. While the difference in ratings regarding the accuracy of Web-sourced arthritis information between physicians and patients was not significant, only 16.1% of physicians responded that their patients understand the Internet content accurately. Physicians also tended to reply more negatively about the contents and the influence of Web-sourced arthritis information than patients. CONCLUSION Analysis of Korean arthritis web sites revealed many sites with financial interests. There was also a discrepancy found between patients and physicians regarding the impact of Web-sourced arthritis information on the doctor-patient relationship. Because the impact of the Internet on health care is expected to increase, physicians need to be prepared to help patients benefit from information obtained from the Internet.
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Affiliation(s)
- H A Kim
- Department of Internal Medicine, Hallym University Kangdong Sacred Heart Hospital, Seoul, Korea.
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Choi HG, Kwak DH, Kim JY, Choi YJ, Kil BS, Kim HA, Jung KY, Shin MK, Lee HS, Choo YK. Effects of hwangryunjihwang-tang on in vitro ertilization and ovulation in mice fed a high-fat diet. Am J Chin Med 2003; 31:213-23. [PMID: 12856860 DOI: 10.1142/s0192415x03000904] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
It has been generally accepted that hwangryunjihwang-tang (h-tang) is a useful prescription for treating polydipsia and to prevent obesity induced by a high-fat diet. The aim of this study was to clarify whether h-tang improved reproductive dysfunction caused by obesity in mice. Mice were fed a high density protein and lipid diet for 4 weeks, followed by administration of h-tang at 480 mg/kg body weight per day for 4 days. Thereafter, changes of body weight, ovulation rate, in vitro and in vivo fertilization, embryonic development and implantation rate were measured. H-tang markedly reduced the body weight of obese mice fed a high-fat diet, but not mice fed a normal diet. H-tang significantly improved ovulation rates, in vitro and in vivo fertilization rates and embryonic development. These results indicate pharmacological reversal of reproductive dysfunction caused by obesity, perhaps by adjusting internal secretions and metabolic functions.
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Affiliation(s)
- H G Choi
- College of Natural Sciences and Medicinal Resources Research Cente, Wonkwang University, Iksan, Jeonbuk 570-749, South Korea
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Choi HJ, Ahn IY, Kim KW, Kim HA, Lee IS. Subcellular distribution of naturally elevated cadmium in the antarctic clam Laternula elliptica. Bull Environ Contam Toxicol 2003; 71:83-89. [PMID: 12945846 DOI: 10.1007/s00128-003-0134-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- H J Choi
- Polar Sciences Laboratory, Korea Ocean Research and Development Institute, Ansan Post Office Box 29, Seoul 425-600, Korea
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Affiliation(s)
- T Aigner
- University of Erlangen-Nürnberg, Erlangen, Germany.
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Shin KC, Lee YJ, Kang SW, Baek HJ, Lee EB, Kim HA, Song YW. Serum procalcitonin measurement for detection of intercurrent infection in febrile patients with SLE. Ann Rheum Dis 2001; 60:988-9. [PMID: 11589181 PMCID: PMC1753381 DOI: 10.1136/ard.60.10.988] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kim HA, Suh DI, Song YW. Relationship between chondrocyte apoptosis and matrix depletion in human articular cartilage. J Rheumatol 2001; 28:2038-45. [PMID: 11550972] [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: 02/21/2023]
Abstract
OBJECTIVE Chondrocyte apoptosis has been described in studies of the pathogenesis of various arthritides. Since matrix degradation is important in the pathology of arthritis, we investigated the effect of matrix depletion on chondrocyte apoptosis. METHODS Consecutive 1 mm sections of child's rib cartilage were cultured under 4 sets of conditions: (1) control; and treatment with (2) hyaluronidase, (3) collagenase, (4) hyaluronidase/collagenase alternately. Sections were harvested on Days 5, 8, and 11, and the proportion of apoptotic cells was measured by propidium iodide staining and flow cytometry. Changes of Fas and Fas ligand expression were verified by immunohistochemistry and Western blot. RESULTS Collagenase treatment led to an increase of apoptosis, which began on Day 8, whereas hyaluronidase treatment had no effect on chondrocyte viability up to Day 11. Alternating hyaluronidase and collagenase treatment induced chondrocyte death earlier, but the difference in apoptotic rate was not significant on Days 8 or 11 compared to collagenase treatment alone. Immunohistochemistry showed the expression of Fas ligand in all enzymatically treated specimens. Expression of Fas receptor was ubiquitous in both control and treated specimens. CONCLUSION The collagen framework is important in the maintenance of chondrocyte survival in human cartilage. Upregulation of Fas ligand in matrix depleted specimens suggested that the Fas pathway may have a role in apoptosis induced by matrix depletion.
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Affiliation(s)
- H A Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul National University Hospital, Korea
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Kim HA, Ratner N, Roberts TM, Stiles CD. Schwann cell proliferative responses to cAMP and Nf1 are mediated by cyclin D1. J Neurosci 2001; 21:1110-6. [PMID: 11160381 PMCID: PMC6762237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
In most mammalian cells, the cAMP-dependent protein kinase A pathway promotes growth arrest and cell differentiation. However in Schwann cells, the reverse is true. Elevated levels of cAMP function as the cofactor to a broad range of mitogenic cues in culture and in animals. Previous studies have suggested that cAMP acts at an early point in the Schwann cell mitogenic response, perhaps by stimulating the expression of growth factor receptors. We show here that cAMP acts downstream rather than upstream of growth factor receptor expression. The essential function(s) of cAMP is exerted as Schwann cells progress through the G(1) phase of the cell cycle. Ectopic expression studies using an inducible retroviral vector show that the G(1) phase requirement for cAMP can be alleviated by a single protein, cyclin D1. We show, in addition, that at least one function of the Nf1 tumor suppressor is to antagonize the accumulation of cAMP and the expression of cyclin D1 in Schwann cells. Thus a G(1) phase-specific protein, cyclin D1, accounts for two salient features of Schwann cell growth control: the promitotic response to cAMP and the antimitotic response to the Nf1 tumor suppressor.
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Affiliation(s)
- H A Kim
- Departments of Microbiology, Harvard Medical School and the Dana-Farber Cancer Institute, Boston, Massachusetts 02115, USA
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Kim HY, Park HS, Kim YK, Son JW, Kim HA, Suh JH, Nahm DH, Cho SH, Min KU, Kim YY. Identification of IgE-binding components of citrus red mite in sera of patients with citrus red mite-induced asthma. J Allergy Clin Immunol 2001; 107:244-8. [PMID: 11174189 DOI: 10.1067/mai.2001.112123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [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: 11/22/2022]
Abstract
BACKGROUND Our previous investigations demonstrated that citrus red mite (CRM) antigen could cause IgE-mediated bronchoconstriction in exposed farmers working on citrus farms. OBJECTIVE This study was performed to confirm IgE-binding components and major allergens within the CRM antigens. METHODS Ten subjects who had been diagnosed as having CRM-induced asthma were enrolled. Serum-specific IgE antibodies to CRM antigens were measured by using an ELISA. To identify IgE-binding components and major allergens, SDS-PAGE, 2-dimensional PAGE, IgE-immunoblot analysis, and amino acid sequencing of major allergens were performed. RESULTS All the asthmatic subjects had high specific IgE antibodies to CRMs. Twelve percent SDS-PAGE analysis showed more than 10 protein bands ranging from 6 to 64 kd. SDS-PAGE and IgE-immunoblot analysis with each individual serum showed 5 IgE-binding components (11, 24, 35, 40, and 64 kd), with 2 (24 and 35 kd) of them bound in more than 50% of the study subjects. Two-dimensional PAGE and IgE-immunoblot analysis demonstrated that the major allergen at 24 kd had 2 bands with different isoelectric points of 4.75 and 5.1. Thirty-five kilodaltons had one band with an isoelectric point of 4.75. All amino acid sequencing of the 2 major allergens was performed, which was not homologous with any previously characterized allergens. CONCLUSION Five IgE-binding components and 2 major allergens (24 and 35 kd) were identified within the CRM antigen. The N-terminal amino acid sequence of the 2 major allergens (24 and 35 kd) was determined.
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Affiliation(s)
- H Y Kim
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
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Lee YJ, Shin KC, Kang SW, Lee EB, Kim HA, Song YW. Type III procollagen N-terminal propeptide, soluble interleukin-2 receptor, and von Willebrand factor in systemic sclerosis. Clin Exp Rheumatol 2001; 19:69-74. [PMID: 11247328] [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: 02/19/2023]
Abstract
OBJECTIVE To evaluate the blood concentration of type III procollagen N-terminal propeptide (PIIINP), soluble interleukin-2 receptor (sIL-2R), and von Willebrand factor (vWF) in systemic sclerosis (SSc) patients. METHODS PIIINP, sIL-2R, and vWF were measured in the sera and plasma of 29 SSc patients and 29 sex- and age-matched healthy controls. Serum PIIINP was determined by radioimmunoassay. Both serum sIL-2R and plasma vWF were measured by enzyme-linked immunosorbent assay (ELISA). Associations between concentrations and clinical and laboratory features were evaluated. RESULTS Serum levels of PIIINP and sIL-2R were significantly higher in the SSc group than in the control group (p < 0.01 for both). No differences in serum PIIINP and sIL-2R levels were found between the limited and diffuse cutaneous subsets. However, PIIINP concentrations were significantly higher in anti-Scl-70 positive SSc patients compared with those of anti-Scl-70 negative patients (p = 0.01). Serum PIIINP levels were significantly higher in SSc patients with restrictive pulmonary function (FVC < 80%) than in patients with normal pulmonary function (p < 0.05). The correlation between PIIINP levels and FVC (p < 0.05) was negative, but the correlation between PIIINP levels and modified Rodnan skin scores (p < 0.05) was positive. sIL-2R levels were not correlated with skin and pulmonary involvement of SSc. There was no difference in vWF levels between those of the SSc patients and those of the control groups. CONCLUSION These results suggest that serum PIIINP serves as a biologic marker for the extent of skin and pulmonary involvement in systemic sclerosis. Increased serum levels of sIL-2R in SSc patients support a role for T lymphocyte activation in the pathogenesis of systemic sclerosis.
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Affiliation(s)
- Y J Lee
- Department of Internal Medicine, Clinical Research Institute, College of Medicine, Seoul National University, and Chungnam National University, Korea
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Baek HJ, Yoo CD, Shin KC, Lee YJ, Kang SW, Lee EB, Han CW, Kim HA, Youn JI, Song YW. Spondylitis is the most common pattern of psoriatic arthritis in Korea. Rheumatol Int 2000; 19:89-94. [PMID: 10776686 DOI: 10.1007/s002960050109] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We assessed the prevalence and clinical features of psoriatic arthritis (PsA) in Korean patients with psoriasis. The prevalence of PsA in patients with psoriasis was 9%. Patients with PsA were older and had a longer duration of skin disease than those with psoriasis alone (median age, 40 vs 35 years, P = 0.03, and 15.3 vs 11.7 years, P = 0.04, respectively). Spondylitis was the most common pattern of PsA (50%). Nail change, dactylitis, and enthesopathy were observed in 36%, 15.4%, and 15.6% of patients with PsA, respectively. Increased erythrocyte sedimentation rate (ESR), antinuclear antibody, and radiological sacroiliitis were more frequent in patients with PsA than in those with uncomplicated psoriasis (25.8% vs 10.3%, P = 0.04; 37.9% vs 16.7%, P = 0.02; and 37.8% vs 1.1%, P < 0.01, respectively). The onset ages of psoriasis and arthritis in the spondylitis group were significantly lower than those in the non-spondylitis group (median age, 21.5 vs 31 years, P = 0.03, and 28.5 vs 43.5 years, P = 0.01, respectively). HLA-B27 was prevalent in 8% of patients with PsA.
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Affiliation(s)
- H J Baek
- Department of Internal Medicine, Seoul National University College of Medicine, Korea
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Kim HA, Pomeroy SL, Whoriskey W, Pawlitzky I, Benowitz LI, Sicinski P, Stiles CD, Roberts TM. A developmentally regulated switch directs regenerative growth of Schwann cells through cyclin D1. Neuron 2000; 26:405-16. [PMID: 10839359 DOI: 10.1016/s0896-6273(00)81173-3] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Sciatic nerve axons in cyclin D1 knockout mice develop normally, become properly ensheathed by Schwann cells, and appear to function normally. However, in the Wallerian degeneration model of nerve injury, the mitotic response of Schwann cells is completely inhibited. The mitotic block is Schwann cell autonomous and developmentally regulated. Rescue analysis (by "knockin" of cyclin E) indicates that D1 protein, rather than regulatory elements of the D1 gene, provides the essential Schwann cell function. Genetic inhibition of the Schwann cell cycle shows that neuronal responses to nerve injury are surprisingly independent of Schwann cell mitotic responses. Even axonal regrowth into the distal zone of a nerve crush injury is not markedly impaired in cyclin D1-/- mice.
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Affiliation(s)
- H A Kim
- Department of Cancer Biology, Dana-Farber Cancer Institute, Children's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA
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Kim HA, Lee YJ, Seong SC, Choe KW, Song YW. Apoptotic chondrocyte death in human osteoarthritis. J Rheumatol 2000; 27:455-62. [PMID: 10685814] [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: 02/15/2023]
Abstract
OBJECTIVE To define apoptotic chondrocyte death and the expression of Bcl-2, Bax, and Fas in human osteoarthritis (OA) cartilage. METHODS Cartilage samples were obtained from patients with knee OA at the time of joint replacement surgery and from normal autopsy cases. In OA, sections were obtained both from the lesional area, usually within 1 cm of bony exposure, and from the non-lesional area, which had macroscopically normal appearance or only mild surface irregularities. Apoptosis was verified by microscopic examination of hematoxylin and eosin stained specimens, TUNEL staining, electron microscopy, and DNA ladder analysis by electrophoresis. Immunohistochemistry was done to study the expression of Bcl-2, Bax, and Fas. Apoptotic cells and Bcl-2, Bax, and Fas positive cells were counted within defined microscopic fields. Expression of Bcl-2 and Bax was verified by Western blot. RESULTS The percentage of apoptotic cells in the lesional area was significantly higher than in the non-lesional area in cartilage from the same patient with OA, while apoptotic cells were rarely seen in normal cartilage. This result was confirmed by TUNEL stain. Many chondrocytes with chromatin condensation were verified in electron microscopy, and DNA from OA lesional cartilage revealed a DNA ladder on electrophoresis. Bcl-2 and Fas expressions were significantly higher in the OA lesional area than in the non-lesional area. On the other hand, Bcl-2 expression in normal cartilage was significantly higher than in OA cartilage. There was no significant difference in Bax expression among normal, OA lesional, and OA non-lesional cartilage. CONCLUSION These results show that apoptotic chondrocyte death occurs more frequently in OA compared to normal cartilage and in OA lesional compared to OA non-lesional cartilage. The different expression patterns of Bcl-2 and Fas in OA lesional and non-lesional cartilage suggest that they might be involved in the pathogenesis of OA.
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Affiliation(s)
- H A Kim
- Department of Internal Medicine and Orthopedic Surgery, Seoul National University College of Medicine, Korea
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Abstract
1 Antimony (Sb), an industrial and environmental toxicant, is known to cause dermatitis and pulmonary inflammations, but the immunomodulatory effects of environmental or occupational exposure to Sb have not been reported. To initiate investigation of Sb-induced alterations of the immune system, the concentrations of the IgG subclasses, IgE, interleukin-2, interferon-gamma, and interleukin-4 in sera obtained from workers exposed to Sb through antimony trioxide manufacture were determined and compared with those of control subjects. 2 The serum levels of IgG1, an immunoglobulin involved in host defense against many microbial infections, were significantly lower in the sera of Sb-exposed individuals than the controls. The serum concentrations of IgE, an immunoglobulin mediating allergic hypersensitivity, also were lower in the Sb-exposed workers than the controls. In addition, the levels of interleukin-2 and interferon-gamma, multifunctional cytokines for T-cell mediated immunity, were lowered in the factory workers. 3 A significant positive correlation between IgG4 and urine Sb levels was found among the Sb-exposed workers, indicating a possible role of IgG4 in Sb-mediated pulmonary or skin pathogenesis. 4 The present study provides the first report on immune alterations induced by occupational exposure to Sb and suggests that Sb exposure disturbs immunohomeostasis in humans observed as a function of aberrant serum cytokine and immunoglobulin levels, which could influence health.
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Affiliation(s)
- H A Kim
- Department of Preventive Medicine, The Catholic University of Korea, Seoul, Korea
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Rosenbaum T, Kim HA, Boissy YL, Ling B, Ratner N. Neurofibromin, the neurofibromatosis type 1 Ras-GAP, is required for appropriate P0 expression and myelination. Ann N Y Acad Sci 1999; 883:203-14. [PMID: 10586246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
The neurofibromatosis type 1 (NF1) gene product, neurofibromin, regulates activation of the Ras intracellular signaling pathway in Schwann cells. Schwann cells purified from mouse embryos with null mutations in the Nf1 gene increase expression of the major myelin glycoprotein P0. v-Ras expression in cultured Schwann cells partially mimics loss of Nf1, suggesting a role for Ras in upregulation of P0 expression in Nf1-deficient cells. We tested whether loss of Nf1 alters the ability of Schwann cells to form myelin. No significant changes in myelin formation resulted when Nf1-deficient or v-Ras-expressing Schwann cells were cultured with normal neurons. Yet, in organotypic cultures of neurons, Schwann cells, and fibroblasts without neurofibromin, myelination was dramatically reduced. We suggest that Nf1-dependent signaling cascades in neurons and/or fibroblasts, as well as Schwann cells, are required for normal myelination.
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Affiliation(s)
- T Rosenbaum
- Department of Cell Biology, Neurobiology, and Anatomy, University of Cincinnati Medical School, Ohio 45267-0521, USA
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Kang SW, Lee EB, Baek HJ, Kim HA, Chang BL, Song YW. Bilateral optic neuritis in ankylosing spondylitis. Clin Exp Rheumatol 1999; 17:635-6. [PMID: 10544859] [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: 02/14/2023]
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Abstract
OBJECTIVE Recently, chondrocytes were shown to undergo apoptosis by the addition of nitric oxide and by coupling of Fas/Fas ligand in vitro, suggesting the possibility that chondrocytes have an inherent programmed cell death pathway that operates in adult cartilage. Chondrocyte apoptosis was verified in situ in articular cartilage samples from humans with osteoarthritis (OA) and from an animal model of OA. The present study investigates apoptotic chondrocyte death and the expression of Bcl-2 and Fas in rheumatoid arthritis (RA) cartilage. METHODS Cartilage samples were obtained from 13 RA patients at the time of joint replacement surgery and from 8 normal subjects at autopsy. Apoptotic chondrocytes were observed and counted in hematoxylin and eosin-stained cartilage specimens. Apoptosis was verified by TUNEL, electron microscopy, and DNA ladder assay. Bcl-2 and Fas expression were evaluated by immunohistochemistry. RESULTS Apoptotic cells were frequently observed in RA cartilage, whereas normal cartilage rarely showed apoptotic cells (3.01% versus 0.15%, respectively), a finding that was further confirmed by TUNEL staining. On electron microscopy, numerous apoptotic cells with typical chromatin condensation were observed in RA cartilage. DNA from RA cartilage also revealed 180-basepair nucleosome ladders on electrophoresis. Bcl-2 expression was significantly lower in RA cartilage than in normal cartilage (23.3% versus 43.1%, respectively), whereas Fas expression was not statistically different. CONCLUSION Apoptotic chondrocyte death and decreased Bcl-2 expression were verified in RA cartilage. They might provide a novel model system for the research of cartilage breakdown and joint destruction in RA.
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Affiliation(s)
- H A Kim
- Seoul National University College of Medicine, Korea
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Rider LG, Shamim E, Okada S, Pandey JP, Targoff IN, O'Hanlon TP, Kim HA, Lim YS, Han H, Song YW, Miller FW. Genetic risk and protective factors for idiopathic inflammatory myopathy in Koreans and American whites: a tale of two loci. Arthritis Rheum 1999; 42:1285-90. [PMID: 10366124 DOI: 10.1002/1529-0131(199906)42:6<1285::aid-anr28>3.0.co;2-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
OBJECTIVE To better understand genetic contributions to autoimmunity, immunogenetic markers were studied in two racially discrete and geographically isolated populations of patients with idiopathic inflammatory myopathy (IIM). METHODS Clinical characteristics, as well as clinical and autoantibody subsets, were defined in 151 American white patients and 50 Korean patients with IIM. HLA-DRB1 and DQA1 genotyping was performed on patients and racially matched controls by standard molecular techniques. Gm allotypes and phenotypes were determined by the hemagglutination-inhibition method. RESULTS HLA-DRB1*0301, the linked allele DQA1*0501, and DRB1 alleles sharing the first hypervariable region motif 9EYSTS13 were major genetic risk factors for the development of myositis in whites (corrected P [Pcorr] < 0.0004, odds ratio [OR] 11.2, 4.5, and 3.1, respectively, for each factor versus controls). Although both the white and Korean patients had a similar distribution of clinical characteristics, autoantibody profiles, and clinical groups, no HLA-DRB1 nor DQA1 allele or motif was found to be a risk factor for IIM in the Korean patients. However, DRB1*14 was a protective factor in Korean patients without myositis-specific autoantibodies (Pcorr = 0.004, OR 0.046). In addition, although no Gm phenotype or allotype was identified as a risk factor in whites, Gm 21 was a protective factor for the development of IIM in Koreans (Pcorr = 0.024, OR 0.3). CONCLUSION Although myositis patients in the US and Korea share similar clinical and serologic features, the immune response genes predisposing to and protecting from myositis in each of these ethnic groups differ at two chromosomal loci. These data suggest that multiple genetic loci should be studied to identify risk and protective factors for some autoimmune diseases in various ethnic populations.
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Affiliation(s)
- L G Rider
- Center for Biologics Evaluation and Research, Food and Drug Administration, Bethesda, Maryland 20892, USA
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Kim HA. Theoretical and treatment issues of personality disorders in individualistic and collectivistic societies. Psychiatry Clin Neurosci 1998; 52 Suppl:S242-5. [PMID: 9895158 DOI: 10.1111/j.1440-1819.1998.tb03233.x] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The author will attempt to equate so-called personality disorders with what used to be called psychoneurosis. Some suggestions for theoretical and technical modifications to apply psychoanalysis and psychotherapy on selective cases within the current managed care environment have been offered. In order to develop a comprehensive and effective psychotherapy system, a collaboration of psychotherapists both in collectivistic and individualistic societies is highly desirable. Furthermore, the differences of personality disorder and neurosis in both social structure are either minimal or insignificant from a psychotherapeutic point of view.
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Affiliation(s)
- H A Kim
- Cornell University Medical College, New York City, Pearl River, New York 10965, USA
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Song YW, Kim HA, Baek HJ, Lee EB, Chung ES, Hong KM. Paclitaxel reduces anti-dsDNA antibody titer and BUN, prolonging survival in murine lupus. Int J Immunopharmacol 1998; 20:669-77. [PMID: 9848398 DOI: 10.1016/s0192-0561(98)00057-5] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
We evaluated the effect of paclitaxel on the severity of autoimmunity in the murine model of systemic lupus erythematosus (SLE), NZB x NZW F1 mice. Fifteen 20 week old (NZB x NZW) F1 female mice were given a dose of 10 mg/kg paclitaxel by the intraperitoneal route on three alternate days followed by 7.5 mg/kg on three additional alternate days. This pattern of treatment was repeated every 4 weeks for a period of 28 weeks. 20 control mice were injected intraperitoneally with an equal volume of the vehicle used. Serum anti-double stranded DNA (dsDNA) antibody titers and the blood urea nitrogen (BUN) were significantly diminished in the paclitaxel treated group compared to the vehicle treated group. While the onset of proteinuria appeared to be delayed in the experimental group, the difference was not significant. Survival rate improved significantly in paclitaxel treated group (p = 0.04 by log-rank test). These results suggest that paclitaxel is beneficial in the suppression of autoimmunity in this strain of mice by reducing the anti-dsDNA antibody titer and the BUN, prolonging survival.
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Affiliation(s)
- Y W Song
- Department of Internal Medicine, Seoul National University, College of Medicine, South Korea
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Song YW, Kim HA, Lee EB, Baek HJ, Kim JK, Chung JH, Chung ES, Hong KM. Molecular and genetic characterization of two anti-DNA antibodies derived from patients with systemic lupus erythematosus. Rheumatol Int 1998; 17:223-8. [PMID: 9592861 DOI: 10.1007/s002960050038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 02/07/2023]
Abstract
Anti-double stranded(ds) DNA antibody is one of markers of systemic lupus erythematosus (SLE). Two human monoclonal anti-DNA antibody-producing cell lines were established from two SLE patients. One cell line secreted IgG isotype antibody (KSUG) and the other secreted IgM isotype antibody (KSUN). The light chains of the two immunoglobulins were lambda chains. The nucleotide sequences for the immunoglobulin variable region genes of the two antibodies were determined and compared to germline sequences. The heavy and lambda light chains of KSUG were VH3 family and V lambda IIIb, respectively. The heavy and lambda light chains of KSUN were VH4 family and V lambda IX, respectively. Antibody KSUG, IgG isotype, showed somatic mutations, whereas KSUN, IgM isotype, used the germline gene without mutation. These findings reconfirm the current paradigms that IgM anti-DNA antibodies are produced by utilizing germline genes whereas IgG anti-DNA antibodies are produced by somatic mutations.
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Affiliation(s)
- Y W Song
- Department of Biochemistry, College of Medicine, Wonkwang University, Iksan, Korea.
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Kim HA, Yoo CD, Baek HJ, Lee EB, Ahn C, Han JS, Kim S, Lee JS, Choe KW, Song YW. Mycobacterium tuberculosis infection in a corticosteroid-treated rheumatic disease patient population. Clin Exp Rheumatol 1998; 16:9-13. [PMID: 9543555] [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: 02/07/2023]
Abstract
OBJECTIVE To investigate the incidence and risk factors of Mycobacterium tuberculosis infection in longterm corticosteroid treated rheumatic disease patients. METHODS We assessed retrospectively the incidence of active tuberculosis and its risk factors in 269 rheumatic disease patients treated with moderate to high doses of corticosteroid for an evaluation period representing 1,035 corticosteroid years of therapy. RESULTS The mean daily dose of steroid was 18.7 mg prednisolone and the mean daily dose during the first year of treatment was 20.4 mg prednisolone. 21 of these patients developed active tuberculosis resulting in an incidence rate of 20/1,000 patient-years. Cumulative and mean daily steroid doses during the follow-up period and during the first year of treatment, and a history of steroid pulse therapy were significantly correlated with the development of tuberculosis. A past history of tuberculosis, initial chest P-A abnormality, the starting dose of steroid, a history of more than 30 mg/day of prednisolone for more than one month, and a history of cytotoxic therapy were not related to the development of tuberculosis. CONCLUSION The incidence of active tuberculosis is increased in rheumatic patients on moderate-to-high dose steroid treatment. Its risk factors are the cumulative and mean daily steroid doses during the follow-up period and during the first year of steroid treatment, and a history of steroid pulse therapy.
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Affiliation(s)
- H A Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Korea
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