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Eum S, Son JW, Min C, Cho W, Kim S, Woo HG, Kwon R, Lee KN, Han KD, Yon DK, Rhee SY. Ethnic and sex differences in the distributions of body mass index and waist circumference among adults: a binationally representative study in South Korea and the United States. Eur Rev Med Pharmacol Sci 2023; 27:1889-1903. [PMID: 36930486 DOI: 10.26355/eurrev_202303_31555] [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] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
OBJECTIVE The ethnic and sex differences in the distributions of body mass index (BMI) and waist circumference (WC) among adults are largely unknown. Therefore, we aimed to investigate the percentiles of BMI and WC in groups divided according to age, sex, and ethnicity. PATIENTS AND METHODS We conducted a population-based binational study of adults aged ≥20 years based on data from two sources: US National Health and Nutrition Examination Survey (2015 to 2020) and Korea National Health and Nutrition Examination Survey (2016 to 2019). RESULTS Weight, height, and WC were measured in 13,144 American adults and 30,191 Korean adults. Overall, BMI increased at younger ages and decreased at older ages, which indicates a reversed U-shaped relationship, and differed in terms of age, sex, and ethnicity. Women in the other Hispanic, non-Hispanic white, non-Hispanic black, and "other ethnic groups" showed a common BMI peak at ages 50-54 years. The patterns of WC distribution were similar to those of BMI distribution. CONCLUSIONS In this binational representative study, we found varied distributions of ethnic and sex differences in BMI and WC. Considering the differences in these distributions may help improve individual and personalized treatment strategies.
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Affiliation(s)
- S Eum
- Department of Medicine, Kyung Hee University College of Medicine, Seoul, Republic of Korea.
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2
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Kim Y, Cho DH, Cha YS, Son JW. Global longitudinal strain to predict myocardial fibrosis in patients in carbon monoxide poisoning. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Carbon monoxide (CO) inhibits oxygen delivery and subsequently causes ischemic changes that can lead to myocardial damage. Late gadolinium enhancement (LGE) on cardiac magnetic resonance imaging (CMR) reflects myocardial fibrosis and detects subclinical myocardial damage in patients with acute CO poisoning. However, CMR is expensive and hard to perform in patients with neurologic deficit. Therefore, this study aims to investigate which echocardiographic parameters could predict the presence of myocardial fibrosis represented by LGE in CO intoxication patients.
Methods
This prospective observational study included 128 consecutive patients (Mean age: 52.2±16.2) with acute CO poisoning and elevated troponin I (defined as >0.045 ng/mL) at the emergency department of a tertiary university hospital. All participants underwent hyperbaric oxygen therapy (HBOT). CMR and conventional echocardiography with 2D speckle-tracking were performed within 7 days. Subjects were categorized into late gadolinium enhancement (LGE) and no LGE group according to the CMR findings.
Results
Mean left ventricular (LV) ejection fraction (EF) and global longitudinal strain (GLS) were 57.0±10.0% and −16.3±3.7% respectively. LGE was observed in 89 (69.5%) patients and the most common pattern was mid-wall involvement. Clinical characteristics such as age, sex, shock, time elapsed from rescue to HBOT, and the level of troponin I were not different between groups with LGE and without LGE. Among echocardiographic parameters, LV EF was not significantly different between groups (LGE: 56.0±10.5% vs 59.3±8.1%, p=0.089). LV GLS was more impaired in patients with LGE compared to those without LGE (−15.7±3.8% vs −17.9±3.0%, p=0.003). In multivariate logistic analysis, LV GLS was independently associated with the presence of LGE [Odds ratio (OR) 1.279, 95% confidence interval (CI) (1.047–1.563), p=0.016], but not LV EF.
Conclusion
In patients with acute CO poisoning and elevated troponin I, LV GLS predicted the presence of LGE in CMR. These finding suggest that subclinical myocardial dysfunction represented by LV GLS may reflect the burden of CO induced myocardial fibrosis.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- Y Kim
- Wonju Severance Christian Hospital , Wonju , Korea (Republic of)
| | - D H Cho
- Wonju Severance Christian Hospital , Wonju , Korea (Republic of)
| | - Y S Cha
- Wonju Severance Christian Hospital , Wonju , Korea (Republic of)
| | - J W Son
- Wonju Severance Christian Hospital , Wonju , Korea (Republic of)
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3
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Kim BJ, Park JI, Nam JH, Lee JH, Lee CH, Son JW, Park JS, Shin DG, Kim U, Her SH, Chang KY, Ahn TH, Jeong MH, Rha SW, Kim HS. Clinical impact of intravascular ultrasound guidance in patients of ST-segment elevation myocardial infarction undergoing percutaneous coronary intervention with drug eluting stent. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
There is little data about clinical role of intravascular ultrasound (IVUS)-guided Percutaneous (PCI) in the setting of ST-segment elevation myocardial infarction (STEMI).
Methods
From 2005 to 2018, a total of 8,129 patients who underwent PCI with STEMI were investigated from the Korea Acute Myocardial Infarction Registry-National Institute of Health database. Patients with Non-ST segment elevation myocardial infarction, cardiogenic shock, bare metal stent implantation, thrombolytic treatment, and coronary artery bypass graft surgery were excluded. We categorized patients into two groups based on the treatment strategy: IVUS-guided PCI group (n=1,544), and coronary angiography guidance (CAG)-guided PCI group (n=6,585). The primary endpoint was composite of major adverse cardiovascular (MACE), including, cardiac death, myocardial infarction (MI), repeat target vessel revascularization (TVR) and stent thrombosis (ST).
Results
IVUS-guided PCI was performed in 19% patients (1544/8129). After propensity score matching, there were no statistically difference in the rate of cardiac death (0% in IVUS vs. 0.26% in CAG, p=0.947), MI (2.01% vs. 2.01%, p=0.408), TVR (1.23% vs. 0.91%, p=0.131), ST (0.32% vs. 0.45%, p=0.828) and composite of MACE at 1 year between two groups (2.01% vs. 2.40%, p=0.843). Independent risk factors for MACE were diabetes mellitus and multi-vessel disease, but not IVUS-guided PCI (HR 1.167, 95% CI, 0.896–1.520, p=0.251).
Conclusion
This study suggests that routine usage of IVUS in the setting of STEMI may not be necessary. Large-scaled random study will be needed for further evaluation.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- B J Kim
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J I Park
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J H Nam
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J H Lee
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - C H Lee
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J W Son
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - J S Park
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - D G Shin
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - U Kim
- Yeungnam University Hospital, Daegu, Korea (Republic of)
| | - S H Her
- St. Vincent's Hospital, College of Medicine, Suwon, Korea (Republic of)
| | - K Y Chang
- The Catholic University of Korea Seoul St. Mary's Hospital, Seoul, Korea (Republic of)
| | - T H Ahn
- Gachon University Gil Medical Center, Incheon, Korea (Republic of)
| | - M H Jeong
- Chonnam National University Hospital, Gwangju, Korea (Republic of)
| | - S W Rha
- Korea University Guro Hospital, Seoul, Korea (Democratic People's Republic of)
| | - H S Kim
- Seoul National University Hospital, Seoul, Korea (Republic of)
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4
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Ko EJ, Kwag EB, Park JH, Park SJ, Son JW, Yoon SH, Shin SH, Yoo HS. Multi-Center, Randomized, Double-Blind, Placebo-Controlled, Exploratory Study to Evaluate the Efficacy and Safety of HAD-B1 for Dose-Finding in EGFR Mutation Positive and Locally Advanced or Metastatic NSCLC Subjects Who Need Afatinib Therapy. Integr Cancer Ther 2021; 20:15347354211037917. [PMID: 34409891 PMCID: PMC8381462 DOI: 10.1177/15347354211037917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Afatinib is a target anticancer drug of the second-generation EGFR TKI type,
showing an advantage in treatment effect compared to conventional chemotherapy.
However, patients on EGFR-TKI drugs also usually progress after 9 to 13 months
according to secondary resistance. HAD-B1 is composed of drugs that are
effective against lung cancer. This study is an exploratory study to evaluate
the efficacy and safety between dosage groups by conducting a clinical trial in
subjects requiring afatinib drug treatment in non-small cell lung cancer with
EGFR mutation positive to determine the optimal dosage for HAD-B1
administration. At the final visit compared to before administration, each
change in the disease control rate was measured according to the HAD-B1 doses of
the test group 1 (972 mg), the test group 2 (1944 mg), and the control group.
The efficacy and safety of HAD-B1 were compared and evaluated through
sub-evaluation variables. As a result of the study, there was no statistically
significant difference in the disease control rate at 12 weeks after dosing, but
complete and partial remission were evaluated as 1 patient each in the test
group 1, and none in the other groups. There was no statistically significant
difference between groups in the sub-evaluation variable. In addition, there was
no problem of safety from taking the test drug. However, the initially planned
number of subjects was 66, but the number of enrolled subjects was only 14,
which may limit the results of this study.
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Affiliation(s)
- Eun-Ju Ko
- Daejeon Korean Medicine Hospital of Daejeon University, Daejeon, Republic of Korea
| | - Eun-Bin Kwag
- Daejeon Korean Medicine Hospital of Daejeon University, Daejeon, Republic of Korea
| | - Ji Hye Park
- Seoul Korean Medicine Hospital of Daejeon University, Seoul, Republic of Korea
| | - So-Jung Park
- Daejeon Korean Medicine Hospital of Daejeon University, Daejeon, Republic of Korea
| | - Ji-Woong Son
- Konyang University Hospital, Daejeon, Republic of Korea
| | - Seong-Hun Yoon
- Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Seong-Hun Shin
- Kosin University Gospel Hospital, Pusan, Republic of Korea
| | - Hwa-Seung Yoo
- Daejeon Korean Medicine Hospital of Daejeon University, Daejeon, Republic of Korea.,Seoul Korean Medicine Hospital of Daejeon University, Seoul, Republic of Korea
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5
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Abstract
Tumor suppressor p53 is not only affects immune responses but also contributes to antibacterial activity. However, its bactericidal function during mycobacterial infection remains unclear. In this study, we found that the p53-deficient macrophages failed to control Mycobacterium tuberculosis (Mtb), manifested as a lower apoptotic cell death rate and enhanced intracellular survival. The expression levels of p53 during Mtb infection were stronger in M1 macrophages than in M2 macrophages. The TLR2/JNK signaling pathway plays an essential role in the modulation of M1 macrophage polarization upon Mtb infection. It facilitates p53-mediated apoptosis through the production of reactive oxygen species, nitric oxide and inflammatory cytokines in Mtb-infected M1 macrophages. In addition, nutlin-3 effectively abrogated the intracellular survival of mycobacteria in both TB patients and healthy controls after H37Ra infection for 24 h, indicating that the enhancement of p53 production effectively suppressed the intracellular survival of Mtb in hosts. These results suggest that p53 can be a new therapeutic target for TB therapy.
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Affiliation(s)
- Yun-Ji Lim
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea.,Department of Medical Science, Chungnam National University, Daejeon, South Korea.,Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Junghwan Lee
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea.,Department of Medical Science, Chungnam National University, Daejeon, South Korea
| | - Ji-Ae Choi
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea.,Department of Medical Science, Chungnam National University, Daejeon, South Korea.,Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, South Korea
| | - Soo-Na Cho
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea.,Department of Medical Science, Chungnam National University, Daejeon, South Korea
| | - Sang-Hun Son
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea.,Department of Medical Science, Chungnam National University, Daejeon, South Korea
| | - Sun-Jung Kwon
- Department of Internal Medicine, Konyang University Hospital, Daejeon, South Korea
| | - Ji-Woong Son
- Department of Internal Medicine, Konyang University Hospital, Daejeon, South Korea
| | - Chang-Hwa Song
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, 35015, South Korea. .,Department of Medical Science, Chungnam National University, Daejeon, South Korea. .,Research Institute for Medical Sciences, College of Medicine, Chungnam National University, Daejeon, South Korea.
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6
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Son JW, Choi SH, Jang JH, Koh JT, Oh WM, Hwang YC, Lee BN. Irisin promotes odontogenic differentiation and angiogenic potential in human dental pulp cells. Int Endod J 2020; 54:399-412. [PMID: 33089893 DOI: 10.1111/iej.13435] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 10/19/2020] [Accepted: 10/19/2020] [Indexed: 12/31/2022]
Abstract
AIM To determine whether irisin, a newly discovered myokine that links exercise-induced and metabolic homeostasis, is able to promote odontogenic differentiation and angiogenesis in human dental pulp cells (HDPCs). METHODOLOGY Cell viability in the presence of irisin was measured. Real-time PCR and Western blot analysis were performed to evaluate the expression levels of irisin, odontogenic and angiogenic markers. The involvement of mitogen-activated protein kinase (MAPK) and the protein kinase B (Akt) signalling pathway was evaluated by Western blot. To evaluate mineralization nodule formation, alkaline phosphatase (ALP) staining and alizarin red S staining were performed. Scratch wound assays were performed to evaluate the effects of irisin on cell migration. The data were analysed using one-way analysis of variance (anova) followed by Tukey post hoc test and Student's t-test. Statistical significance was considered at P < 0.05. RESULTS Irisin significantly promoted odontogenic differentiation as evidenced by formation of mineralized nodules, induction of ALP activity and upregulation of odontogenic and angiogenic markers (P < 0.05). Scratch wound assays revealed that irisin significantly increased migration of HDPCs (P < 0.05). Phosphorylation of both MAPK and Akt was increased by irisin. MAPK and Akt inhibitors inhibited mineralization, cell migration and the increased expression of odontogenic and angiogenic markers. CONCLUSIONS Irisin promoted odontogenic differentiation and mineralization and has the potential for angiogenesis through activation of the MAPK and Akt signalling pathways in HDPCs.
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Affiliation(s)
- J W Son
- Department of Conservative Dentistry, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - S H Choi
- Department of Conservative Dentistry, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - J H Jang
- Department of Conservative Dentistry, School of Dentistry, Kyung Hee University, Seoul, Korea
| | - J T Koh
- Department of Pharmacology and Dental Therapeutics, Hard-tissue Biointerface Research Center, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - W M Oh
- Department of Conservative Dentistry, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - Y C Hwang
- Department of Conservative Dentistry, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
| | - B N Lee
- Department of Conservative Dentistry, School of Dentistry, Dental Science Research Institute, Chonnam National University, Gwangju, Korea
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7
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Yoo BS, Ahn MS, Lee SJ, Son JW, Kim JY, Park SW. P783Guideline-directed therapy at discharge is important in patients with heart failure and atrial fibrillation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
There are limited and conflicting data regarding the prognostic implication of guideline-directed therapy, especially in heart failure (HF) patients with atrial fibrillation (AF). Thus, this study evaluated the relationship between guideline adherence to recommended therapy at discharge and relevant 60-day clinical outcomes in acute HF patients with AF having reduced ejection fraction (HFrEF) or preserved ejection fraction (HFpEF).
Methods and results
Of 5,625 acute HF patients in the Korean Acute Heart Failure Registry, 2,071 with documented AF (HFrEF, n=986; HFpEF, n=1,085) were separately analysed. A guideline adherence score was calculated for the prescription of angiotensin-converting enzyme inhibitors, angiotensin receptor blockers, β-blockers, mineralocorticoid receptor antagonists, and anticoagulants. In HFrEF patients with AF, there was significant trend of increase in mortality (p for trend <0.001) and composite endpoint (p for trend = 0.002) according to guideline adherence. Poor adherence was associated with a significantly high risk of mortality (hazard ratio [HR], 4.75; 95% confidence interval [95% CI], 1.77–12.74) and composite endpoint (HR, 2.36; 95% CI, 1.33–4.18). In HFpEF patients with AF, there was a significant increasing trend for rehospitalization (p for trend = 0.04) and composite endpoint (p for trend = 0.03). However, the beneficial effect of good guideline adherence was statistically non-significant for all clinical outcomes
Conclusion
Better adherence to guidelines was associated with a better 60-day prognosis in both HFrEF and HFpEF patients with AF. However, the beneficial effect of guideline adherence was more pronounced in HFrEF patients with AF.
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Affiliation(s)
- B S Yoo
- Wonju College of Medicine, Yonsei University, Division of Cardiology, Department of Internal Medicin, Wonju, Korea (Republic of)
| | - M S Ahn
- Wonju College of Medicine, Yonsei University, Division of Cardiology, Department of Internal Medicin, Wonju, Korea (Republic of)
| | - S J Lee
- Wonju College of Medicine, Yonsei University, Division of Cardiology, Department of Internal Medicin, Wonju, Korea (Republic of)
| | - J W Son
- Wonju College of Medicine, Yonsei University, Division of Cardiology, Department of Internal Medicin, Wonju, Korea (Republic of)
| | - J Y Kim
- Wonju College of Medicine, Yonsei University, Division of Cardiology, Department of Internal Medicin, Wonju, Korea (Republic of)
| | - S W Park
- Wonju College of Medicine, Yonsei University, Division of Cardiology, Department of Internal Medicin, Wonju, Korea (Republic of)
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8
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Kim TS, Jin YB, Kim YS, Kim S, Kim JK, Lee HM, Suh HW, Choe JH, Kim YJ, Koo BS, Kim HN, Jung M, Lee SH, Kim DK, Chung C, Son JW, Min JJ, Kim JM, Deng CX, Kim HS, Lee SR, Jo EK. SIRT3 promotes antimycobacterial defenses by coordinating mitochondrial and autophagic functions. Autophagy 2019; 15:1356-1375. [PMID: 30774023 DOI: 10.1080/15548627.2019.1582743] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
SIRT3 (sirtuin 3), a mitochondrial protein deacetylase, maintains respiratory function, but its role in the regulation of innate immune defense is largely unknown. Herein, we show that SIRT3 coordinates mitochondrial function and macroautophagy/autophagy activation to promote anti-mycobacterial responses through PPARA (peroxisome proliferator activated receptor alpha). SIRT3 deficiency enhanced inflammatory responses and mitochondrial dysfunction, leading to defective host defense and pathological inflammation during mycobacterial infection. Antibody-mediated depletion of polymorphonuclear neutrophils significantly increased protection against mycobacterial infection in sirt3-/- mice. In addition, mitochondrial oxidative stress promoted excessive inflammation induced by Mycobacterium tuberculosis infection in sirt3-/- macrophages. Notably, SIRT3 was essential for the enhancement of PPARA, a key regulator of mitochondrial homeostasis and autophagy activation in the context of infection. Importantly, overexpression of either PPARA or TFEB (transcription factor EB) in sirt3-/- macrophages recovered antimicrobial activity through autophagy activation. Furthermore, pharmacological activation of SIRT3 enhanced antibacterial autophagy and functional mitochondrial pools during mycobacterial infection. Finally, the levels of SIRT3 and PPARA were downregulated and inversely correlated with TNF (tumor necrosis factor) levels in peripheral blood mononuclear cells from tuberculosis patients. Collectively, these data demonstrate a previously unappreciated function of SIRT3 in orchestrating mitochondrial and autophagic functions to promote antimycobacterial responses. Abbreviations: Ab: antibody; BCG: M. bovis Bacillus Calmette-Guérin; Baf-A1: bafilomycin A1; BMDMs: bone marrow-derived macrophages; CFU: colony forming unit; CXCL5: C-X-C motif chemokine ligand 5; EGFP: enhanced green fluorescent protein; ERFP: enhanced red fluorescent protein; FOXO3: forkhead box O3; HC: healthy controls; H&E: haematoxylin and eosin; HKL: honokiol; IHC: immunohistochemistry; IL1B: interleukin 1 beta; IL6: interleukin 6; IL12B: interleukin 12B; MDMs: monocyte-derived macrophages; MMP: mitochondrial membrane potential; Mtb: Mycobacterium tuberculosis; PBMC: peripheral blood mononuclear cells; PBS: phosphate buffered saline; PMN: polymorphonuclear neutrophil; PPARA: peroxisome proliferator activated receptor alpha; ROS: reactive oxygen species; SIRT3: sirtuin 3; TB: tuberculosis; TEM: transmission electron microscopy; TFEB: transcription factor EB; TNF: tumor necrosis factor.
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Affiliation(s)
- Tae Sung Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Yeung Bae Jin
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Yi Sak Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Sup Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Jin Kyung Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Hye-Mi Lee
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Hyun-Woo Suh
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Jin Ho Choe
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Young Jae Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
| | - Bon-Sang Koo
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Han-Na Kim
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Mingyu Jung
- e Department of Pathology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Sang-Hee Lee
- f Institute of Molecular Biology & Genetics , Seoul National University , Seoul , Korea
| | - Don-Kyu Kim
- g Department of Molecular Biotechnology , Chonnam National University , Gwangju , Korea
| | - Chaeuk Chung
- c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea.,h Division of Pulmonary and Critical Care, Department of Internal Medicine , Chungnam National University School of Medicine , Daejeon , Korea
| | - Ji-Woong Son
- i Department of Internal Medicine , Konyang University , Daejeon , Korea
| | - Jung-Joon Min
- j Department of Nuclear Medicine , Chonnam National University Medical School , Gwangju , Korea
| | - Jin-Man Kim
- c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea.,e Department of Pathology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Chu-Xia Deng
- k Faculty of Health Sciences , University of Macau , Macau SAR , China
| | - Hyun Seok Kim
- l Department of Bioinspired Science , Ewha Womans University , Seoul , Korea
| | - Sang-Rae Lee
- d National Primate Research Center , Korea Research Institute of Bioscience and Biotechnology , Cheongju , Korea
| | - Eun-Kyeong Jo
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,c Infection Control Convergence Research Center , Chungnam National University School of Medicine , Daejeon , Korea
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9
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Kim JH, Jeong IB, Son JW, Na MJ, Kwon SJ. LAMA increases pulmonary lung functions in post-tuberculous destroyed lung patients. Tuberculosis (Edinb) 2018. [DOI: 10.1183/13993003.congress-2018.pa2752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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10
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Lee JH, Son BC, Jung SY, Lee CH, Son JW, Kim U, Park JS, Shin DG. P1715Clinical effects of beta blocker selectivity and dosage regimens in acute myocardial infarction: propensity-score matching analysis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1715] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- J H Lee
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
| | - B C Son
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
| | - S Y Jung
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
| | - C H Lee
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
| | - J W Son
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
| | - U Kim
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
| | - J S Park
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
| | - D G Shin
- Yeungnam University Hospital, Cardiology, Daegu, Korea Republic of
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11
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Kim JK, Lee HM, Park KS, Shin DM, Kim TS, Kim YS, Suh HW, Kim SY, Kim IS, Kim JM, Son JW, Sohn KM, Jung SS, Chung C, Han SB, Yang CS, Jo EK. MIR144* inhibits antimicrobial responses against Mycobacterium tuberculosis in human monocytes and macrophages by targeting the autophagy protein DRAM2. Autophagy 2016; 13:423-441. [PMID: 27764573 DOI: 10.1080/15548627.2016.1241922] [Citation(s) in RCA: 93] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Autophagy is an important antimicrobial effector process that defends against Mycobacterium tuberculosis (Mtb), the human pathogen causing tuberculosis (TB). MicroRNAs (miRNAs), endogenous noncoding RNAs, are involved in various biological functions and act as post-transcriptional regulators to target mRNAs. The process by which miRNAs affect antibacterial autophagy and host defense mechanisms against Mtb infections in human monocytes and macrophages is largely uncharacterized. In this study, we show that Mtb significantly induces the expression of MIR144*/hsa-miR-144-5p, which targets the 3'-untranslated region of DRAM2 (DNA damage regulated autophagy modulator 2) in human monocytes and macrophages. Mtb infection downregulated, whereas the autophagy activators upregulated, DRAM2 expression in human monocytes and macrophages by activating AMP-activated protein kinase. In addition, overexpression of MIR144* decreased DRAM2 expression and formation of autophagosomes in human monocytes, whereas inhibition of MIR144* had the opposite effect. Moreover, the levels of MIR144* were elevated, whereas DRAM2 levels were reduced, in human peripheral blood cells and tissues in TB patients, indicating the clinical significance of MIR144* and DRAM2 in human TB. Notably, DRAM2 interacted with BECN1 and UVRAG, essential components of the autophagic machinery, leading to displacement of RUBCN from the BECN1 complex and enhancement of Ptdlns3K activity. Furthermore, MIR144* and DRAM2 were critically involved in phagosomal maturation and enhanced antimicrobial effects against Mtb. Our findings identify a previously unrecognized role of human MIR144* in the inhibition of antibacterial autophagy and the innate host immune response to Mtb. Additionally, these data reveal that DRAM2 is a key coordinator of autophagy activation that enhances antimicrobial activity against Mtb.
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Affiliation(s)
- Jin Kyung Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
| | - Hye-Mi Lee
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Ki-Sun Park
- c Program in Genomics of Differentiation, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health , Bethesda , MD , USA
| | - Dong-Min Shin
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Tae Sung Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
| | - Yi Sak Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
| | - Hyun-Woo Suh
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
| | - Soo Yeon Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
| | - In Soo Kim
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Jin-Man Kim
- b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea.,d Department of Pathology , Chungnam National University School of Medicine , Daejeon , Korea
| | - Ji-Woong Son
- e Department of Internal Medicine , Konyang University , Daejeon , Korea
| | - Kyung Mok Sohn
- f Division of Infectious Diseases, Department of Internal Medicine , Chungnam National University School of Medicine , Daejeon , Korea
| | - Sung Soo Jung
- g Division of Pulmonary and Critical Care, Department of Internal Medicine , Chungnam National University School of Medicine , Daejeon , Korea
| | - Chaeuk Chung
- g Division of Pulmonary and Critical Care, Department of Internal Medicine , Chungnam National University School of Medicine , Daejeon , Korea
| | - Sang-Bae Han
- h College of Pharmacy, Chungbuk National University , Cheongju , Korea
| | - Chul-Su Yang
- i Department of Molecular and Life Science , Hanyang University , Ansan , Korea
| | - Eun-Kyeong Jo
- a Department of Microbiology , Chungnam National University School of Medicine , Daejeon , Korea.,b Department of Medical Science , Chungnam National University School of Medicine , Daejeon , Korea
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12
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Lee SY, Choi JE, Jeon HS, Hong MJ, Choi YY, Kang HG, Yoo SS, Lee EB, Jeong JY, Lee WK, Lee J, Cha SI, Kim CH, Kim YT, Jheon S, Son JW, Park JY. A genetic variation in microRNA target site of KRT81 gene is associated with survival in early-stage non-small-cell lung cancer. Ann Oncol 2015; 26:1142-1148. [PMID: 25716425 DOI: 10.1093/annonc/mdv100] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Accepted: 02/12/2015] [Indexed: 08/08/2023] Open
Abstract
BACKGROUND MicroRNAs (miRNAs) have a key role in carcinogenesis through negative regulation of their target genes. Therefore, genetic variations in miRNAs or their target sites may affect miRNA-mRNA interactions, thereby result in altered expression of target genes. This study was conducted to investigate the associations between single-nucleotide polymorphisms (SNP) located in the miRNA target sites (poly-miRTSs) and survival of patients with early-stage non-small-cell lung cancer (NSCLC). METHODS Using public SNP database and miRNA target sites prediction program, 354 poly-miRTSs were selected for genotyping. Among these, 154 SNPs applicable to Sequenom's MassARRAY platform were investigated in 357 patients. A replication study was carried out on an independent patient population (n = 479). Renilla luciferase assay and reverse transcription-polymerase chain reaction were conducted to examine functional relevance of potentially functional poly-miRTSs. RESULTS Of the 154 SNPs analyzed in a discovery set, 14 SNPs were significantly associated with survival outcomes. Among these, KRT81 rs3660G>C was found to be associated with survival outcomes in the validation cohort. In the combined analysis, patients with the rs3660 GC + CC genotype had a significantly better overall survival compared with those with GG genotype [adjusted hazard ratio (aHR) for OS, 0.65; 95% confidence interval (CI) 0.50-0.85; P = 0.001]. An increased expression of the reporter gene for the C allele of rs3660 compared with the G allele was observed by luciferase assay. Consistently, the C allele was associated with higher relative expression level of KRT81 in tumor tissues. CONCLUSION The rs3660G>C affects KRT81 expression and thus influences survival in early-stage NSCLC. The analysis of the rs3660G>C polymorphism may be useful to identify patients at high risk of a poor disease outcome.
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MESH Headings
- 3' Untranslated Regions
- Aged
- Binding Sites
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/mortality
- Carcinoma, Non-Small-Cell Lung/pathology
- Carcinoma, Non-Small-Cell Lung/therapy
- Computational Biology
- Databases, Genetic
- Female
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic
- Gene Frequency
- Genetic Predisposition to Disease
- HEK293 Cells
- Humans
- Kaplan-Meier Estimate
- Keratins, Hair-Specific/genetics
- Keratins, Hair-Specific/metabolism
- Keratins, Type II/genetics
- Keratins, Type II/metabolism
- Lung Neoplasms/genetics
- Lung Neoplasms/metabolism
- Lung Neoplasms/mortality
- Lung Neoplasms/pathology
- Lung Neoplasms/therapy
- Male
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Middle Aged
- Neoplasm Staging
- Phenotype
- Polymorphism, Single Nucleotide
- Proportional Hazards Models
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Risk Factors
- Time Factors
- Transfection
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Affiliation(s)
- S Y Lee
- Lung Cancer Center, Kyungpook National University Medical Center, Daegu; Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu
| | - J E Choi
- Lung Cancer Center, Kyungpook National University Medical Center, Daegu; Department of Biochemistry and Cell Biology, School of Medicine.
| | - H S Jeon
- The Molecular Diagnostics & Imaging Research Institute
| | - M J Hong
- Department of Biochemistry and Cell Biology, School of Medicine
| | - Y Y Choi
- Department of Biochemistry and Cell Biology, School of Medicine
| | - H G Kang
- Department of Biochemistry and Cell Biology, School of Medicine
| | - S S Yoo
- Lung Cancer Center, Kyungpook National University Medical Center, Daegu; Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu
| | - E B Lee
- Departments of Thoracic Surgery
| | | | - W K Lee
- Biostatistics Center, School of Medicine, Kyungpook National University, Daegu
| | - J Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu
| | - S I Cha
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu
| | - C H Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu
| | - Y T Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University School of Medicine, Seoul
| | - S Jheon
- Department of Thoracic and Cardiovascular Surgery, Seoul National University School of Medicine, Seoul
| | - J W Son
- Department of Internal Medicine, Konyang University Hospital, Daejeon
| | - J Y Park
- Lung Cancer Center, Kyungpook National University Medical Center, Daegu; Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu; Department of Biochemistry and Cell Biology, School of Medicine; BK21 Plus KNU Biomedical Convergence Program, Department of Biomedical Science, Kyungpook National University, Daegu, Republic of Korea
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13
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Kwon SJ, Jeon T, Seo D, Na M, Choi EG, Son JW, Yoo EH, Park CG, Lee HY, Kim JO, Kim SY, Kang J. Quantitative PCR for Etiologic Diagnosis of Methicillin-Resistant Staphylococcus aureus Pneumonia in Intensive Care Unit. Tuberc Respir Dis (Seoul) 2012; 72:293-301. [PMID: 23227069 PMCID: PMC3510279 DOI: 10.4046/trd.2012.72.3.293] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 01/09/2012] [Accepted: 01/27/2012] [Indexed: 11/24/2022] Open
Abstract
Background Ventilator-associated pneumonia (VAP) requires prompt and appropriate treatment. Since methicillin-resistant Staphylococcus aureus (MRSA) is a frequent pathogen in VAP, rapid identification of it, is pivotal. Our aim was to evaluate the utility of quantitative polymerase chain reaction (qPCR) as a useful method for etiologic diagnoses of MRSA pneumonia. Methods We performed qPCR for mecA, S. aureus-specific femA-SA, and S. epidermidis-specific femA-SE genes from bronchoalveolar lavage or bronchial washing samples obtained from clinically-suspected VAP. Molecular identification of MRSA was based on the presence of the mecA and femA-SA gene, with the absence of the femA-SE gene. To compensate for the experimental and clinical conditions, we spiked an internal control in the course of DNA extraction. We estimated number of colony-forming units per mL (CFU/mL) of MRSA samples through a standard curve of a serially-diluted reference MRSA strain. We compared the threshold cycle (Ct) value with the microbiologic results of MRSA. Results We obtained the mecA gene standard curve, which showed the detection limit of the mecA gene to be 100 fg, which corresponds to a copy number of 30. We chose cut-off Ct values of 27.94 (equivalent to 1×104 CFU/mL) and 21.78 (equivalent to 1×105 CFU/mL). The sensitivity and specificity of our assay were 88.9% and 88.9% respectively, when compared with quantitative cultures. Conclusion Our results were valuable for diagnosing and identifying pathogens involved in VAP. We believe our modified qPCR is an appropriate tool for the rapid diagnosis of clinical pathogens regarding patients in the intensive care unit.
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Affiliation(s)
- Sun-Jung Kwon
- Myunggok Medical Research Institute, Konyang University College of Medicine, Daejeon, Korea. ; Department of Internal Medicine, Konyang University Hospital, Konyang University College of Medicine, Daejeon, Korea
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14
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Kim JH, Yoon SC, Lee YM, Son JW, Choi EG, Na MJ, Kwon SJ. Role of Microbiologic Culture Results of Specimens Prior to Onset of Ventilator-Associated Pneumonia in the Patients Admitted to Intensive Care Unit. Tuberc Respir Dis (Seoul) 2012. [DOI: 10.4046/trd.2012.72.1.30] [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: 11/24/2022] Open
Affiliation(s)
- Ji Hye Kim
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Sung-Chul Yoon
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Yu-Mi Lee
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Ji-Woong Son
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Eu-Gene Choi
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Moon-Jun Na
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Sun-Jung Kwon
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
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15
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Lee HM, Yuk JM, Kim KH, Jang J, Kang G, Park JB, Son JW, Jo EK. Mycobacterium abscessus activates the NLRP3 inflammasome via Dectin-1-Syk and p62/SQSTM1. Immunol Cell Biol 2011; 90:601-10. [PMID: 21876553 PMCID: PMC3389799 DOI: 10.1038/icb.2011.72] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Numerous atypical mycobacteria, including Mycobacterium abscessus (Mabc), cause nontuberculous mycobacterial infections, which present a serious public health threat. Inflammasome activation is involved in host defense and the pathogenesis of autoimmune diseases. However, inflammasome activation has not been widely characterized in human macrophages infected with atypical mycobacteria. Here, we demonstrate that Mabc robustly activates the nucleotide binding and oligomerization domain-like receptor family pyrin domain containing 3 (NLRP3) inflammasome via dectin-1/Syk-dependent signaling and the cytoplasmic scaffold protein p62/SQSTM1 (p62) in human macrophages. Both dectin-1 and Toll-like receptor 2 (TLR2) were required for Mabc-induced mRNA expression of pro-interleukin (IL)-1β, cathelicidin human cationic antimicrobial protein-18/LL-37 and β-defensin 4 (DEFB4). Dectin-1-dependent Syk signaling, but not that of MyD88, led to the activation of caspase-1 and secretion of IL-1β through the activation of an NLRP3/apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) inflammasome. Additionally, potassium efflux was required for Mabc-induced NLRP3/ASC inflammasome activation. Furthermore, Mabc-induced p62 expression was critically involved in NLRP3 inflammasome activation in human macrophages. Finally, NLRP3/ASC was critical for the inflammasome in antimicrobial responses to Mabc infection. Taken together, these data demonstrate the induction mechanism of the NLRP3/ASC inflammasome and its role in innate immunity to Mabc infection.
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Affiliation(s)
- Hye-Mi Lee
- Department of Microbiology, Chungnam National University School of Medicine, Daejeon, Korea
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16
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Lee M, Lee Y, Cho HJ, Hong J, Kwon SJ, Park CG, Lee HY, Son JW, Kang J. Copy number variations of chromosome 17p13.1 might be linked to high risk of lung cancer in heavy smokers. Mol Biol Rep 2011; 38:5211-7. [PMID: 21203850 DOI: 10.1007/s11033-010-0672-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 12/14/2010] [Indexed: 10/18/2022]
Abstract
Lung cancer is the most common cause of cancer death worldwide. Smoking is known as the strongest single factor in the development of lung cancer. However, there are inherited genetic factors that cause different responses to cigarette smoking exposure among individuals. We tried to identify these differences in heavy smokers by examining copy number variations (CNVs) between lung cancer patients and healthy controls. Analysis by array comparative genomic hybridization which was tested with 20-person training set (10 lung cancer patients, 10 healthy controls) showed 26 significant (adjusted P < 0.05) clones with either copy number gains or losses. Three genes, KCTD11, FGF11, and PTPRH on chromosomal regions 17p13.1 (KCTD11 and FGF11) and 19q13.42 (PTPRH), were selected (adjusted P < 0.001) and tested by real-time quantitative PCR with 34 healthy controls and 54 lung cancer patients. KCTD11 on the chromosomal region 17p13.1 showed significant high odds ratio (OR = 16.0) in heavy smokers, implying that this is a susceptibility region for lung cancer in this group. Therefore, CNVs of 17p13.1 is a promising candidate to identify individuals with a high genetic risk for the development of lung cancer.
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Affiliation(s)
- Minhyeok Lee
- Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon 302-718, Republic of Korea
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17
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Kim JS, Choi YY, Jin G, Kang HG, Choi JE, Jeon HS, Lee WK, Kim DS, Kim CH, Kim YJ, Son JW, Jung TH, Park JY. Association of a common AGO1 variant with lung cancer risk: a two-stage case-control study. Mol Carcinog 2010; 49:913-21. [PMID: 20721975 DOI: 10.1002/mc.20672] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Based on the important role of microRNA (miRNA) biosynthesis genes in carcinogenesis, we hypothesized that polymorphisms in the miRNA biosynthesis genes may modulate susceptibility to lung cancer. To test this hypothesis, we conducted a two-stage study to evaluate the associations between single nucleotide polymorphisms (SNPs) in the miRNA biosynthesis genes and the risk of lung cancer. In stage 1 of the study, 24 SNPs in the 11 miRNA biosynthesis genes (DROSHA, DGCR8, RAN, XPO5, DICER, AGO1, AGO2, HIWI, GEMIN3, GEMIN4, and TRBP) were genotyped in 100 lung cancer patients and 100 healthy controls using a sequenome mass spectrometry-based genotyping assay. One promising SNP (AGO1 rs636832A > G) was selected for stage 2 of the study, and genotyped by a melting-curve analysis using fluorescence-labeled hybridization probes in an independent set of 552 cases and 552 controls. The AGO1 rs636832A > G exhibited highly consistent results between the two stages of the study. In combined analysis, the 636832A > G was associated with a significantly decreased risk of lung cancer in a dose-dependent manner (P(trend) = 6.0 × 10(-4)). Individuals with at least one rs636832G allele were at a significantly decreased risk of lung cancer compared with those with the AA genotype (adjusted odds ratio = 0.67, 95% confidence interval = 0.53-0.84, P = 4.0 × 10(-4)). This finding suggests that the AGO1 rs636832A > G might be a useful marker for determining the susceptibility to lung cancer and that the AGO1 gene might be involved in the development of lung cancer.
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Affiliation(s)
- Jong-Sik Kim
- Department of Biochemistry and Cell Biology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
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18
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Lee Y, Lee M, Cho H, Hong J, Kwon S, Park CG, Lee HY, Son JW, Kang J, Hong J. Abstract B4: Chromosome 17p13.1 (KCTD11), a smoking-related susceptible region linked to lung cancer risk in Korean populations. Clin Cancer Res 2010. [DOI: 10.1158/1078-0432.tcmusa10-b4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Lung cancer is the most common cause of cancer death worldwide. Smoking is known as the strongest single factor for the development of lung cancer. However, there are inherited genetic factors that cause different responses to cigarette smoking exposure among individuals. We tried to identify these differences in heavy smokers by examining copy number variations (CNVs) between lung cancer patients and healthy controls. Analysis by array comparative genomic hybridization (aCGH) showed 26 significant (P<0.05) clones with either copy number gains or losses. 3 genes, KCTD11, FGF11, and PTPRH on chromosomal regions 17p13.1 (KCTD11 and FGF11) and 19q13.42 (PTPRH) were selected (P<0.001) and tested by realtime quantitative PCR (qPCR) with 34 healthy controls and 54 lung cancer patients for large-scale analysis. KCTD11, a known tumor suppressor gene, showed copy number losses in cancer patients. In addition, as the years of smoking increased, odds ratios were also increased (0R=0.8,2.2, and 16.0), implying that it is a susceptible gene to lung cancer when an individual smokes. Therefore, KCTD11 is a promising candidate for a predictive marker to identify individuals with high, inherited genetic risk for the development of lung cancer.
Citation Information: Clin Cancer Res 2010;16(14 Suppl):B4.
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Affiliation(s)
- Yeiwon Lee
- 1Konyang University, Daejeon, Republic of Korea
| | | | | | | | | | | | | | | | - Jaeku Kang
- 1Konyang University, Daejeon, Republic of Korea
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19
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Lee EB, Jin G, Lee SY, Park JY, Kim MJ, Choi JE, Jeon HS, Cha SI, Cho S, Kim CH, Park TI, Jung TH, Son JW, Park JY. TP53 mutations in Korean patients with non-small cell lung cancer. J Korean Med Sci 2010; 25:698-705. [PMID: 20436704 PMCID: PMC2858827 DOI: 10.3346/jkms.2010.25.5.698] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/23/2009] [Accepted: 10/21/2009] [Indexed: 11/20/2022] Open
Abstract
Although TP53 mutations have been widely studied in lung cancer, the majority of studies have focused on exons 5-8 of the gene. In addition, TP53 mutations in Korean patients with lung cancers have not been investigated. We searched for mutations in the entire coding exons, including splice sites of the gene, in Korean patients with non-small cell lung cancer (NSCLC). Mutations of the gene were determined by direct sequencing in 176 NSCLCs. Sixty-nine mutations (62 different mutations) were identified in 65 tumors. Of the 62 mutations, 12 were novel mutations. TP53 mutations were more frequent in males, ever-smokers and squamous cell carcinomas than in females, never-smokers and adenocarcinomas, respectively (all comparisons, P<0.001). Missense mutations were most common (52.2%), but frameshift, nonsense, and splice-site mutations were frequently observed at frequencies of 18.8%, 15.9% and 10.1%, respectively. Of the 69 mutations, 9 (13.0%) were found in the oligomerization domain. In addition, the proportion of mutations in the oligomerization domain was significantly higher in adenocarcinomas than in squamous cell carcinomas (23.5% vs. 2.9%, P=0.01). Our study provides clinical and molecular characteristics of TP53 mutations in Korean patients with NSCLCs.
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Affiliation(s)
- Eung Bae Lee
- Department of Thoracic Surgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Guang Jin
- Department of Biochemistry, School of Medicine, Kyungpook National University, Daegu, Korea
- Department of Pharmacology, Yanbian University School of Basic Medicine, Yanji, Jilin, China
| | - Shin Yup Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Ji Young Park
- Department of Pathology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Min Jung Kim
- Department of Biochemistry, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jin Eun Choi
- Department of Biochemistry, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Hyo Sung Jeon
- Department of Biochemistry, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seung Ick Cha
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sukki Cho
- Department of Thoracic Surgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Chang Ho Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Tae-In Park
- Department of Pathology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Tae Hoon Jung
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Ji-Woong Son
- Department of Internal Medicine, Konyang University College of Medicine, Nonsan, Korea
| | - Jae Yong Park
- Department of Biochemistry, School of Medicine, Kyungpook National University, Daegu, Korea
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
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20
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Choi GE, Eom SH, Jung KH, Son JW, Shin AR, Shin SJ, Kim KH, Chang CL, Kim HJ. CysA2: A candidate serodiagnostic marker for Mycobacterium tuberculosis infection. Respirology 2010; 15:636-42. [PMID: 20337990 DOI: 10.1111/j.1440-1843.2010.01727.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE It is important to identify and test serologically active antigens in order to devise a mixture of antigens or peptides that is most useful for serodiagnosis. This study evaluated the serodiagnostic potential of CysA2, which has not previously been described as a serological antigen, together with those of PstS1, HspX, antigen 85 complex and CFP-10 proteins. METHODS Serum IgG antibody titres against each antigen and a mixture of the antigens were measured by ELISA, in subjects with pulmonary tuberculosis and in healthy control subjects. RESULTS CysA2 showed diagnostic value comparable to that of PstS1 and HspX. Mixtures of these three proteins provided the highest diagnostic sensitivity. CysA2 was useful for identifying patients who did not react to HspX or PstS1, and was most valuable in increasing the sensitivity of testing. Furthermore, CysA2 efficiently overcame the limitation associated with use of PstS1, that is, significantly lower sensitivity for subjects who are negative for acid-fast bacilli. CONCLUSIONS These findings suggest that CysA2 can be used in combination with HspX and/or PstS1 to increase the accuracy of tuberculosis diagnoses.
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Affiliation(s)
- Go-Eun Choi
- Department of Laboratory Medicine and Medical Research Institute, School of Medicine, Pusan National University, Yangsan, South Korea
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Lee JS, Yang CS, Shin DM, Yuk JM, Son JW, Jo EK. Nitric Oxide Synthesis is Modulated by 1,25-Dihydroxyvitamin D3 and Interferon-gamma in Human Macrophages after Mycobacterial Infection. Immune Netw 2009; 9:192-202. [PMID: 20157607 PMCID: PMC2816953 DOI: 10.4110/in.2009.9.5.192] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2009] [Revised: 09/18/2009] [Accepted: 09/19/2009] [Indexed: 01/14/2023] Open
Abstract
Background Little information is available the role of Nitric Oxide (NO) in host defenses during human tuberculosis (TB) infection. We investigated the modulating factor(s) affecting NO synthase (iNOS) induction in human macrophages. Methods Both iNOS mRNA and protein that regulate the growth of mycobacteria were determined using reverase transcriptase-polymerase chain reaction and western blot analysis. The upstream signaling pathways were further investigated using iNOS specific inhibitors. Results Here we show that combined treatment with 1,25-dihydroxyvitamin D3 (1,25-D3) and Interferon (IFN)-γ synergistically enhanced NO synthesis and iNOS expression induced by Mycobacterium tuberculosis (MTB) or by its purified protein derivatives in human monocyte-derived macrophages. Both the nuclear factor-κB and MEK1-ERK1/2 pathways were indispensable in the induction of iNOS expression, as shown in toll like receptor 2 stimulation. Further, the combined treatment with 1,25-D3 and IFN-γ was more potent than either agent alone in the inhibition of intracellular MTB growth. Notably, this enhanced effect was not explained by increased expression of cathelicidin, a known antimycobacterial effector of 1,25-D3. Conclusion These data support a key role of NO in host defenses against TB and identify novel modulating factors for iNOS induction in human macrophages.
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Affiliation(s)
- Ji-Sook Lee
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon 301-747, Korea
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Kwon MH, Kang MI, Jeong JH, Won HK, Park HW, Park JH, Kim ST, Kwon SJ, Choi E, Na MJ, Cho HM, Kim YJ, Kim YM, Cho YJ, Son JW. Synchronous Roentgenographically Occult Lung Carcinoma Treated with Argon Plasma Coagulation in a Patient with Resectable Primary Lung Cancer. Tuberc Respir Dis (Seoul) 2008. [DOI: 10.4046/trd.2008.65.2.137] [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: 11/24/2022] Open
Affiliation(s)
- Mi-Hye Kwon
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Mi-Il Kang
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Ji-Hyun Jeong
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Hee-Kwan Won
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Hyun-Woong Park
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Jung-Ho Park
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Sung-Tae Kim
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Sun-Jung Kwon
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Eugene Choi
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Moon-Jun Na
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
| | - Hyun-Min Cho
- Department of Chest Surgery, Konyang University College of Medicine, Daejon, Korea
| | - Young-Jin Kim
- Department of Chest Surgery, Konyang University College of Medicine, Daejon, Korea
| | - Yoon-Mee Kim
- Department of Pathology, Konyang University College of Medicine, Daejon, Korea
| | - Young-Jun Cho
- Department of Diagnostic Radiology, Konyang University College of Medicine, Daejon, Korea
| | - Ji-Woong Son
- Department of Internal Medicine, Konyang University College of Medicine, Daejon, Korea
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Lee JS, Lee JY, Son JW, Oh JH, Shin DM, Yuk JM, Song CH, Paik TH, Jo EK. Expression and regulation of the CC-chemokine ligand 20 during human tuberculosis. Scand J Immunol 2007; 67:77-85. [PMID: 18052967 DOI: 10.1111/j.1365-3083.2007.02040.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
CC-chemokine ligand 20 (CCL20), a unique chemokine ligand of CC-chemokine receptor 6 (CCR6), play roles in various pathologic conditions. However, the characteristic expression profiles of CCL20 during human tuberculosis (TB) have been largely unknown. The present study analyzed the production and regulatory mechanisms of CCL20 in peripheral blood mononuclear cells (PBMC) and monocyte-derived macrophages (MDM) from active pulmonary TB patients and healthy controls (HC). The 30-kDa antigen (Ag) of Mycobacterium tuberculosis actively induced the production of CCL20 by human PBMC and MDM. A comparative analysis revealed that the expression of CCL20 protein was prominently up-regulated in PBMC, MDM, bronchoalveolar lavage fluids (not in sera) from TB patients compared with the corresponding cells or body fluids from HC. Blockade of either tumour necrosis factor-alpha or interferon-gamma, but not interleukin-10, significantly attenuated the CCL20 production. In addition, recombinant CCL20 induced CCR6 expression by CD45RO+ T lymphocytes in a dose-dependent manner. Furthermore, the expression of CCR6 was significantly increased in CD45RO+ T lymphocytes from TB patients, as compared with those from HC. Pharmacological inhibition studies showed that the 30-kDa Ag-induced CCL20 mRNA expression involves mitogen-activated protein kinases (MAPK; extracellular signal-regulated kinase 1/2 and p38)- and NF-kappaB-dependent signalling. Collectively, the present study demonstrated that TB patients show the up-regulated expression of CCL20, which is modulated by proinflammatory cytokines, and through MAPK/NF-kappaB-mediated transcriptional mechanisms. The findings suggest important implications of potential roles of CCL20-CCR6 in immunopathogenesis of TB.
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Affiliation(s)
- J-S Lee
- Department of Microbiology, College of Medicine, Chungnam National University, Daejeon, South Korea
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24
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Son JW, Kang HK, Chae MH, Choi JE, Park JM, Lee WK, Kim CH, Kim DS, Kam S, Kang YM, Park JY. Polymorphisms in the caspase-8 gene and the risk of lung cancer. ACTA ACUST UNITED AC 2006; 169:121-7. [PMID: 16938569 DOI: 10.1016/j.cancergencyto.2006.04.001] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2006] [Revised: 03/28/2006] [Accepted: 04/03/2006] [Indexed: 11/17/2022]
Abstract
Caspase-8 (CASP-8) is an initiator CASP in the cell death receptor-mediated apoptotic pathway, and plays an important role in the development of cancer. Polymorphisms and their haplotypes in the CASP-8 gene can result in alterations in CASP-8 expression and/or activity, thereby modulating the susceptibility to lung cancer. To test this hypothesis, we examined the association of -678_-673delAGTAAG (-678del) and IVS12-19G-->A polymorphisms and their haplotypes with the risk of lung cancer in a Korean population. The CASP-8 genotypes were determined in 432 lung cancer patients and 432 healthy age- and gender-matched control subjects. The distributions of the CASP-8 -678del and IVS12-19G-->A genotypes were not significantly different between the overall lung cancer cases and the controls. When the cases were categorized by tumor histology, however, the IVS12-19 AA genotype and the combined IVS12-19 GA + AA genotype were associated with a significantly decreased risk of small cell carcinoma (SmCC) compared with the IVS12-19 GG genotype [adjusted odds ratio (OR) = 0.14, 95% confidence interval (CI) = 0.03-0.64, P = 0.01; and adjusted OR = 0.56, 95% CI = 0.33-0.96, P = 0.03, respectively]. Consistent with the genotyping analyses, the -678del-/IVS12-19A haplotype containing 94% of the IVS12-19A allele in the study population was associated with a significantly decreased risk of SmCC compared with the -678del-/IVS12-19G (adjusted OR = 0.58, 95% CI = 0.36-0.93, P = 0.023, and Pc = 0.046). These findings suggest that the CASP-8 gene may contribute to an inherited predisposition to SmCC of the lung.
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Affiliation(s)
- Ji-Woong Son
- Department of Internal Medicine, Konyang University College of Medicine, Naedong 26, Nonsan, 320-711, Korea
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25
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Lee JS, Son JW, Jung SB, Kwon YM, Yang CS, Oh JH, Song CH, Kim HJ, Park JK, Paik TH, Jo EK. Ex VivoResponses for Interferon-gamma and Proinflammatory Cytokine Secretion to Low-Molecular-Weight Antigen MTB12 ofMycobacterium tuberculosisduring Human Tuberculosis. Scand J Immunol 2006; 64:145-54. [PMID: 16867160 DOI: 10.1111/j.1365-3083.2006.01784.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
MTB12 protein, also called CFP-2, is a major and early secreted component of Mycobacterium tuberculosis. However, its role during mycobacterial infection has been poorly characterized. In this study, we purified the native MTB12 protein and investigated the profile of MTB12-induced cytokines [interferon (IFN)-gamma, tumour necrosis factor (TNF)-alpha and interleukin (IL)-6], in early tuberculosis (TB) patients (n = 20) and healthy controls (n = 35). The cytokine profiles were compared with those induced by the 30-kDa antigen (Ag). In healthy controls, MTB12-induced IFN-gamma production was markedly decreased in peripheral blood mononuclear cells compared with 30-kDa Ag-induced IFN-gamma. In TB patients, the mean IFN-gamma level induced by MTB12 was lower than that induced by the 30-kDa Ag, albeit the difference was not significant. After 2 months of anti-TB therapy, both the MTB12- and 30-kDa-induced IFN-gamma levels were significantly increased in TB patients. MTB12-induced TNF-alpha and IL-6 levels were prominently upregulated in monocyte-derived macrophages from TB patients, but they were not significantly different from those induced by the 30-kDa Ag. Further, the activation of p38 mitogen-activated protein kinase and extracellular signal-regulated kinase was required for the induction of TNF-alpha and IL-6 by MTB12, as well as by the 30-kDa Ag. Collectively, these data suggest that the MTB12 protein plays an essential role for proinflammatory responses through the MAPK pathway during the early stages of human TB, even though its T-cell immunoreactivity is weaker than that of the 30-kDa Ag.
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Affiliation(s)
- J-S Lee
- Department of Microbiology, College of Medicine, Konyang University, Nonsan, Chungnam, Korea
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26
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Chae MH, Jang JS, Kang HG, Park JH, Park JM, Lee WK, Kam S, Lee EB, Son JW, Park JY. O6-alkylguanine-DNA alkyltransferase gene polymorphisms and the risk of primary lung cancer. Mol Carcinog 2006; 45:239-49. [PMID: 16385589 DOI: 10.1002/mc.20171] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
O6-alkylguanine-DNA alkyltransferase (AGT) plays an important role in the repair of O6-alkylguanine adducts, which are major mutagenic lesions produced by environmental carcinogens. Polymorphisms in the AGT gene may affect the capacity to repair DNA damage and thereby have influence on individual's susceptibility to smoking-related cancer. To test this hypothesis, we investigated the potential association of AGT polymorphisms (485C > A, Leu53Leu (C > T) and Leu84Phe] with the risk of lung cancer in a Korean population. The AGT genotypes were determined in 432 lung cancer patients and in 432 healthy controls who were frequency-matched for age and gender. The 485 AA genotype was associated with a significantly increased risk for overall lung cancer as compared with the 485 CC genotype and the combined 485 CC + CA genotype, respectively (adjusted odds ratio (OR) = 1.83, 95% confidence interval (CI) = 1.12-2.99, P = 0.02, and Bonferroni corrected P-value (Pc) = 0.04; and adjusted OR = 1.67, 95% CI = 1.05-2.66, P = 0.03, respectively). When the lung cancer cases were categorized by the tumor histology, the 485 AA genotype was associated with a significantly increased risk of adenocarcinoma (AC) and small cell carcinoma (SmCC), respectively, as compared with the combined 485 CC + CA genotype (adjusted OR = 2.54, 95% CI = 1.39-4.66, P = 0.003; and adjusted OR = 2.19, 95% CI = 1.06-4.55, P = 0.04, respectively). However, the genotype distributions of the Leu53Leu and Leu84Phe polymorphisms were not significantly different between the lung cancer cases and the controls. On a promoter assay, the 485C > A polymorphism did not have an effect on the promoter activity of the AGT gene. These results suggest that the effect of the AGT 485C > A polymorphism on the risk of lung cancer may be secondary to linkage disequilibrium (LD) with either another AGT variant or with a true susceptibility gene, and that the AGT 485C > A polymorphism could be used as a marker for the genetic susceptibility to lung cancer.
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MESH Headings
- Adenocarcinoma/enzymology
- Adenocarcinoma/genetics
- Adenocarcinoma/pathology
- Adult
- Carcinoma, Large Cell/enzymology
- Carcinoma, Large Cell/genetics
- Carcinoma, Large Cell/pathology
- Carcinoma, Small Cell/enzymology
- Carcinoma, Small Cell/genetics
- Carcinoma, Small Cell/pathology
- Carcinoma, Squamous Cell/enzymology
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/pathology
- Case-Control Studies
- DNA Damage
- DNA Repair
- Female
- Genetic Predisposition to Disease
- Genotype
- Humans
- Lung Neoplasms/enzymology
- Lung Neoplasms/genetics
- Lung Neoplasms/pathology
- Male
- O(6)-Methylguanine-DNA Methyltransferase/metabolism
- Polymorphism, Genetic/genetics
- Promoter Regions, Genetic/genetics
- Risk Factors
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Affiliation(s)
- Myung Hwa Chae
- Cancer Research Institute, Kyungpook National University Hospital, Samduk, Daegu, Korea
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27
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Park JM, Choi JE, Chae MH, Lee WK, Cha SI, Son JW, Kim CH, Kam S, Kang YM, Jung TH, Park JY. Relationship between cyclooxygenase 8473T>C polymorphism and the risk of lung cancer: a case-control study. BMC Cancer 2006; 6:70. [PMID: 16542464 PMCID: PMC1468421 DOI: 10.1186/1471-2407-6-70] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2005] [Accepted: 03/17/2006] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cyclooxygenase-2 (COX-2) plays an important role in the development of lung cancer. DNA sequence variations in the COX-2 gene may lead to altered COX-2 production and/or activity, and so they cause inter-individual differences in the susceptibility to lung cancer. To test this hypothesis, we investigated the association between the 8473T>C polymorphism in the 3'-untranslated region of the COX-2 gene and the risk of lung cancer in a Korean population. METHODS The COX-2 genotypes were determined using PCR-based primer-introduced restriction analysis in 582 lung cancer patients and in 582 healthy controls that were frequency-matched for age and gender. RESULTS The distribution of the COX-2 8473T>C genotypes was not significantly different between the overall lung cancer cases and the controls. However, when the cases were categorized by the tumor histology, the combined 8473 TC + CC genotype was associated with a significantly decreased risk of adenocarcinoma as compared with the 8473 TT genotype (adjusted OR = 0.64; 95% CI = 0.46-0.90, P = 0.01). On the stratification analysis, the protective effect of the combined 8473 TC + CC genotype against adenocarcinoma was statistically significant in the males, older individuals and ever-smokers (adjusted OR = 0.59; 95% CI = 0.39-0.91, P = 0.02; adjusted OR = 0.55; 95% CI = 0.33-0.93, P = 0.03; and adjusted OR = 0.57; 95% CI = 0.37-0.87, P = 0.01, respectively). CONCLUSION These findings suggest that the COX-2 8473T>C polymorphism could be used as a marker for the genetic susceptibility to adenocarcinoma of the lung.
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Affiliation(s)
- Jung Min Park
- Cancer Research Institute, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Jin Eun Choi
- Cancer Research Institute, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Myung Hwa Chae
- Cancer Research Institute, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Won Kee Lee
- Department of Preventive Medicine, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Sung Ick Cha
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Ji-Woong Son
- Department of Internal Medicine, Konyang University College of Medicine, Naedong 26, Nonsan, 320-711, Korea
| | - Chang Ho Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Sin Kam
- Department of Preventive Medicine, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Young Mo Kang
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Tae Hoon Jung
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
| | - Jae Yong Park
- Cancer Research Institute, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Dong In 2Ga 101, Daegu, 700-422, South Korea
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Kim MY, Son JW, Cho MH, Choi CS, Chae CH, Lee MH. Oviductural carcinoma in B6C3F1 female mice exosed to 0.5 ppm ozone. Vet Hum Toxicol 2001; 43:370-2. [PMID: 11757999] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The toxicity and carcinogenecity of ozone was evaluated in B6C3F1 mice exposed to 0.5 ppm ozone via inhalation for 12 w, during which no ozone-related deaths occurred. Decreases in mean body weights of both genders exposed to ozone were sporadically seen, and mean absolute and relative weights of several organs from male and female groups receiving ozone were lower than those of respective air-control groups. No ozone-related increased neoplasm incidences were observed in most organs, including the lung; however, oviductural carcinomas were seen in the ozone-exposed females. Although ozone does not induce lung cancer under our experimental condition, it induces oviductural carcinomas in B6C3F1 mice.
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Affiliation(s)
- M Y Kim
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University, Suwon, Korea
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Koh KK, Son JW, Ahn JY, Lee SK, Hwang HY, Kim DS, Jin DK, Ahn TH, Shin EK. Effect of hormone replacement therapy on nitric oxide bioactivity and monocyte chemoattractant protein-1 levels. Int J Cardiol 2001; 81:43-50. [PMID: 11690664 DOI: 10.1016/s0167-5273(01)00527-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [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: 10/18/2022]
Abstract
BACKGROUND Vascular inflammation plays an important role in the pathogenesis of atherosclerosis. We investigated the effect of hormone replacement therapy (HRT) on vasomotor function and monocyte chemoattractant protein (MCP)-1 levels, an important serological marker of inflammation. METHODS We administered micronized progesterone (MP) 200 mg for 10 days with conjugated equine estrogen (CEE) 0.625 mg for 25 days and remaining 5 days off cyclically during 2 months to 20 healthy postmenopausal women (PMW). We measured NO bioactivity and plasma levels of MCP-1 before and after HRT in 20 PMW. And we measured plasma levels of MCP-1 in each 20 subjects of premenopausal women, men <50, and men >50 years, respectively. RESULTS MP combined with CEE significantly improved the percent flow-mediated dilator response to hyperemia relative to baseline measurements (P<0.001). PMW receiving HRT had lower levels of MCP-1 than those not receiving HRT (121+/-38 versus 146+/-44 pg/ml, P<0.001). In all comparisons, subjects with high estrogen status had significantly lower MCP-1 levels than subjects with low estrogen status (P<0.001 by ANOVA). Premenopausal women had lower levels of MCP-1 than men of a similar age (106+/-14 versus 164+/-40 pg/ml, P<0.001). PMW not receiving HRT had similar levels of MCP-1 compared with men of a similar age (146+/-44 versus 143+/-29 pg/ml, P=0.816). Premenopausal women had markedly lower levels of MCP-1 than PMW not receiving HRT (106+/-14 versus 146+/-44 pg/ml, P=0.001). PMW receiving HRT had similar levels of MCP-1 compared with premenopausal women (121+/-38 versus 106+/-14 pg/ml, P=0.323). CONCLUSION These findings might provide at least a partial explanation for the protection against cardiovascular disease experienced by premenopausal women, and the loss of that protection following menopause.
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Affiliation(s)
- K K Koh
- Cardiology, Gachon Medical School, Inchon, South Korea 405-760.
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30
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Kim YK, Park HS, Kim HY, Jee YK, Son JW, Bae JM, Lee MH, Cho SH, Min KU, Kim YY. Citrus red mite (Panonychus citri) may be an important allergen in the development of asthma among exposed children. Clin Exp Allergy 2001; 31:582-9. [PMID: 11359426 DOI: 10.1046/j.1365-2222.2001.01056.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Recent investigations have demonstrated that spider mites are important allergens in the development of asthma in fruit-cultivating farmers. OBJECTIVE The aim of this study was to evaluate the sensitization rate to the citrus red mite (Panonychus citri) in children living in rural areas, and to determine the allergenic cross-reactivity with other mites. METHODS A total of 7254 children (ages 7-15 years) living in rural areas were enrolled, and each subject was evaluated by a questionnaire and a skin prick test. Allergenic cross-reactivity was evaluated by ELISA inhibition tests. RESULTS The most common sensitizing allergens were house dust mites, followed by citrus red mite and cockroach. High serum-specific IgE bindings to the citrus red mite were detected in 21 of 100 randomly selected subjects. The prevalence of asthma was higher among those with positive skin responses to the citrus red mite than with negative skin responses to this mite. ELISA inhibition tests showed that IgE bindings to this mite were minimally inhibited with additions of domestic mites. CONCLUSION Spider mites such as the citrus red mite may be important outdoor allergens among children living in rural areas, and spider mite-derived allergens have unique allergenic determinants compared with domestic mites.
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Affiliation(s)
- Y K Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Korea.
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31
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Koh KK, Son JW, Ahn JY, Choi YM, Jin DK, Park GS, Choi IS, Sohn MS, Shin EK. Non-lipid effects of statin on hypercholesterolemic patients established to have coronary artery disease who remained hypercholesterolemic while eating a step-II diet. Coron Artery Dis 2001; 12:305-11. [PMID: 11428539 DOI: 10.1097/00019501-200106000-00006] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [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: 11/27/2022]
Abstract
BACKGROUND Results of clinical trials of statin therapy demonstrate that an improvement in incidence of cardiovascular end points and coronary stenosis can be achieved. The beneficial effects of statins on clinical events may involve nonlipid mechanisms that affect endothelial function, such as inflammatory responses, formation of thrombi, and stabilization of plaque. OBJECTIVE To investigate levels of serologic markers, which may be useful surrogates for activity of vascular disease after administration of statin. METHODS We administered 20-40 mg simvastatin daily for 14 weeks to 13 patients established to have coronary artery disease who remained hypercholesterolemic during step-II diet therapy. RESULTS Administration of simvastatin significantly lowered lipoprotein levels and the low: high-density lipoprotein cholesterol level ratio and apolipoprotein B:A-I level ratio compared with pretreatment values (P < 0.01). Administration of simvastatin significantly lowered plasma levels of matrix metalloproteinase-9 (MMP-9) and monocyte chemoattractant protein-I [33+/-46 and 13+/-19%, respectively (P = 0.027 and 0.020, respectively)]. Furthermore, administration of simvastatin tended to lower plasma levels of plasminogen activator inhibitor type-1 and tumor necrosis factor-alpha [by 20+/-44 and 13+/-29%, respectively (P= 0.066 and 0.110, respectively)]. There were significant inverse correlations between pretreatment levels of MMP-9 and the degree of change in those levels after administration of simvastatin (r = -0.714, P= 0.005). However, there was no significant correlation between levels of lipoprotein and levels of MMP-9, monocyte chemoattractant protein-I, and plasminogen activator inhibitor type-1 during administration of simvastatin. CONCLUSIONS Our current data support the hypothesis that nonlipid mechanisms elicited by administration of simvastatin contribute to the decrease in incidence of cardiovascular events and explain the early clinical benefit observed in clinical trials, independent of changes in levels of lipoprotein.
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Affiliation(s)
- K K Koh
- Department of Cardiology, Gachon Medical School, Inchon, South Korea.
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Chung N, Cho SY, Choi DH, Zhu JR, Lee K, Lee PY, Lee SH, Lee S, Wang JJ, Yin WH, Young MS, Koh KK, Son JW, Sangwatanaroj S, Panchavinnin P, Phankingthongkum R, Cai NS, Fan WF. STATT: a titrate-to-goal study of simvastatin in Asian patients with coronary heart disease. Simvastatin Treats Asians to Target. Clin Ther 2001; 23:858-70. [PMID: 11440286 DOI: 10.1016/s0149-2918(01)80074-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/15/2022]
Abstract
BACKGROUND Most published studies on the use of lipid-lowering agents to treat hypercholesterolemia have focused on Western populations, with few data on Asian populations. OBJECTIVE The Simvastatin Treats Asians to Target (STATT) study used a titrate-to-goal protocol to evaluate the efficacy and tolerability of simvastatin 20 to 80 mg/d in the treatment of Asian patients with coronary heart disease. METHODS This was a multicenter, open-label, uncontrolled, 14-week study in patients with coronary heart disease and serum low-density lipoprotein cholesterol (LDL-C) levels of 115-180 mg/dL and triglyceride levels of < or = 400 mg/dL. The dose of simvastatin was titrated from 20 to 80 mg/d to achieve the National Cholesterol Education Program (NCEP) LDL-C target of < or = 100 mg/dL. The primary efficacy measure was the percentage of patients achieving the NCEP target. Among secondary measures were the percentage of patients achieving European Society of Cardiology/European Atherosclerosis Society/European Society of Hypertension target LDL-C levels of < or = 115 mg/dL and the percentage change from baseline in lipid parameters. Tolerability was assessed in terms of the overall incidence of adverse experiences and the incidences of the most commonly reported adverse experiences. RESULTS The intent-to-treat analysis included 133 Asian patients (93 men, 40 women; mean age, 59.5 years), of whom 125 completed 14 weeks of therapy. Their mean blood pressure was 130.2/79.4 mm Hg. Overall, 104 (78.2%) patients treated with simvastatin achieved LDL-C levels < or = 100 mg/dL at week 14, and 125 (94.0%) achieved this target at some point during the study. Similarly, 122 (91.7%) patients achieved an LDL-C level < or = 115 mg/dL at week 14, and 130 (97.7%) achieved this target at some point during the study. Treatment with simvastatin had favorable effects on the lipid profile, producing significant percentage changes from baseline in all parameters (P < 0.001). Simvastatin was well tolerated across the dose range. Overall, 40 patients (30.1%) had > or = 1 clinical adverse experience. Only 14 (10.5%) had adverse experiences that were possibly, probably, or definitely related to study drug; none of these experiences were considered serious. The most common adverse experiences (> or = 3% incidence) were abdominal pain (6%); chest pain (5%); dizziness (4%); and asthenia/fatigue, fibromyalgia, headache, insomnia, and upper respiratory tract infection (3% each). No new or unexpected adverse experiences were seen at the higher doses. CONCLUSIONS Simvastatin was effective and well tolerated at doses of 20, 40, and 80 mg/d in Asian patients with coronary heart disease. Titration enabled the majority to achieve target LDL-C levels of < or = 100 mg/dL.
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Affiliation(s)
- N Chung
- Cardiology Division, Yonsei University College of Medicine, Seoul, Korea.
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Lee MH, Kim YK, Min KU, Lee BJ, Bahn JW, Son JW, Cho SH, Park HS, Koh YY, Kim YY. Differences in sensitization rates to outdoor aeroallergens, especially citrus red mite (Panonychus citri), between urban and rural children. Ann Allergy Asthma Immunol 2001; 86:691-5. [PMID: 11428744 DOI: 10.1016/s1081-1206(10)62300-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
BACKGROUND A recent investigation has suggested that citrus red mite (Panonychus citri, CRM) is the most important allergen in citrus-cultivating farmers with asthma and allergic rhinitis. OBJECTIVE A cross-sectional survey was performed to evaluate the prevalence of asthma and chronic rhinitis symptoms and sensitization to common indoor and outdoor aeroallergens, including CRM and Japanese cedar pollen, in rural and urban Korean children. METHODS A total of 2,055 children (1,055 subjects living in rural areas with citrus farms and 1,000 controls in urban areas without citrus farms) were enrolled. They were evaluated by a questionnaire, and by skin prick tests with 13 common indoor and outdoor aeroallergens, including CRM and Japanese cedar pollen. RESULTS The prevalence of wheezing and chronic rhinitis symptoms during the last 12 months was 8.3% and 35.7% in the rural children and 10.5% and 22.4% in the control group. The most common sensitizing allergens in order of decreasing frequency were Dermatophagoides pteronyssinus (26.6%), Dermatoplagoides farinae (22.7%), CRM (14.2%), cockroach (11.3%), and Japanese cedar pollen (9.7%) among the rural children, but the sensitization rates to CRM and Japanese cedar pollen were 1.3% and 0.2% among the control children, respectively. The prevalence of wheeze during the last 12 months was not different between rural children with sensitization to CRM or Japanese cedar pollen and those without sensitization (5.4% vs 6.1%; 6.9% vs 5.9%). However, the prevalence of chronic rhinitis during the last 12 months was higher among those with sensitization to CRM or to Japanese cedar pollen than among those without sensitization (40.8% vs 34.4%; 51.5% vs 33.5%). CONCLUSIONS CRM is a common sensitizing allergen in rural children, and the sensitization rates to outdoor aeroallergens, especially CRM and Japanese cedar pollen, are very different between children from rural and urban areas in Korea.
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Affiliation(s)
- M H Lee
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Korea
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Shin EK, Son JW, Sohn MS, Jin DK, Park GS, Koh KK, Ahn TH, Choi IS. Efficacy of heparin-coated stent in early setting of acute myocardial infarction. Catheter Cardiovasc Interv 2001; 52:306-12. [PMID: 11246241 DOI: 10.1002/ccd.1070] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 11/05/2022]
Abstract
Primary stenting has been reported to be superior to balloon percutaneous transluminal coronary angioplasty (PTCA) in acute myocardial infarction (AMI) for recurrent ischemia, target lesion revascularization, and restenosis. However, concerns about early reocclusion or thrombosis after stenting in the very thrombotic environment of acute myocardial infarction still remain. Therefore, postprocedural short-term heparin or GpII(b)/III(a) receptor blockades has been used. The aim of our study was to evaluate the safety, feasibility, and long-term efficacy of heparin-coated stent in the early setting of AMI without postprocedural heparin or GpII(b)/III(a) receptor blockade infusion. We studied 102 consecutive patients presenting to cardiac catheterization laboratory < or = 6 hr from the onset of chest pain. No patients who were implanted with heparin-coated stents received heparin or GpII(b)/III(a) receptor blockade infusion after the procedures, not even patients who showed an angiographically large thrombus burden before stenting. Patients were evaluated for clinical endpoints at 30 days and 6 months. Coronary angiography was required for all patients at 2 weeks and 6 months after the procedure. Angiographic and procedural successes were 100% and 98%, respectively. Two patients (2%) died of heart failure without evidence of reocclusion of stented vessel during the hospitalization and 4 (4%) additional patients died of refractory heart failure within the first 6 months. Major bleeding complication occurred in one patient (1%). Recurrent myocardial infarction developed in one patient at 4 months. Early angiographic follow up at 2 weeks was performed in 88% of all patients, none of whom showed thrombotic stent occlusion. Six-month angiographic follow-up was completed in 71%(64/91) of eligible patients and binary restenosis was present in 17.2% of stented vessels. Eight(8%) patients underwent repeat PTCA. Cardiac event-free survival rate at 6 months was 86.3%. This study demonstrates that heparin-coated stents are safe in the early setting of acute myocardial infarction and no additional heparin infusion after stenting is necessary, which may reduce bleeding complications. Angiographic restenosis rate compares favorably to the binary restenosis rate from other studies with uncoated stents.
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Affiliation(s)
- E K Shin
- Division of Cardiology, Gachon University Gil Medical Center, Inchon, South Korea.
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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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Koh KK, Son JW, Shin EK. Variant angina with a strong spasmodic trait. Int J Cardiol 2001; 77:87-91. [PMID: 11203709 DOI: 10.1016/s0167-5273(00)00391-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
A 55-year-old man came to the hospital because of chest pain, mostly occurring in the early morning at rest. He had to get isosorbide dinitrate intravenously with continuous infusion. Following ergonovine provocation test, total occlusion of mid-left anterior descending artery was identified with marked elevation of ST segment as exercise test showed despite isosorbide dinitrate.
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Cho SH, Son JW, Koh YY, Min KU, Kim YY, Kim YK. Linkage between bronchial responsiveness to methacholine and gene markers of IL-4 cytokine gene cluster and T-cell receptor alpha/delta gene complex in Korean nuclear families. Clin Exp Allergy 2001; 31:103-9. [PMID: 11167957] [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: 02/18/2023]
Abstract
BACKGROUND Several candidate genes have been reported to be linked to intermediate phenotypes of asthma in Caucasian populations. OBJECTIVE To evaluate linkage between phenotypes of asthma and gene markers of high affinity IgE receptor-beta gene (D11S97), IL-4 cytokine gene cluster (IL-4R1), and T-cell receptor alpha/delta gene complex (D14S50) in Korean nuclear families. METHODS Nuclear families (127 probands and their 130 siblings) for the linkage analysis were ascertained through asthmatic children. Linkages between total serum IgE response, skin responses to common aeroallergens, and bronchial responsiveness to methacholine were performed using a sib-pair approach. RESULTS The square difference of the slope of the dose-response curve (DRS) between sib-pairs with two IL-4R1 identical alleles was smaller than with one or with neither IL-4R1 identical allele (P = 0.004). As for D14S50, the differences of DRS between sib-pairs with two identical alleles and with one identical allele were smaller than with neither identical alleles (P = 0.01). As for D11S97, no significant differences were observed among the groups with identical alleles of two, one or zero. With regard to total serum IgE levels, no significant linkage was found between this phenotype and the above three gene markers. As for skin responses to common aeroallergens, significant evidence was obtained to establish a linkage between this phenotype and the marker IL-4R1 (P = 0.01). However, no significant linkage was found between this phenotype and the markers D11S97 and D14S50. CONCLUSION The expression of bronchial responsiveness to methacholine may be influenced by genetic factors in the IL-4 cytokine gene cluster and/or T-cell receptor alpha/delta gene complex, but the genetic influence of the FcepsilonRI-beta gene may be minimal in the expression of bronchial responsiveness in Korean nuclear families.
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MESH Headings
- Adolescent
- Asthma/genetics
- Bronchial Hyperreactivity
- Child
- Child, Preschool
- Chromosomes, Human, Pair 11/genetics
- Chromosomes, Human, Pair 14/genetics
- Chromosomes, Human, Pair 5/genetics
- Female
- Genetic Linkage
- Humans
- Immunoglobulin E/immunology
- Interleukin-4/genetics
- Korea
- Male
- Methacholine Chloride/pharmacology
- Nuclear Family
- Receptors, Antigen, T-Cell, alpha-beta/genetics
- Receptors, Antigen, T-Cell, gamma-delta/genetics
- Skin/immunology
- Skin/pathology
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Affiliation(s)
- S H Cho
- Department of Internal Medicine, Seoul National University College of Medicine, Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, Korea
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Park JY, Jeon HS, Park SH, Park TI, Son JW, Kim CH, Park JH, Kim IS, Jung TH, Jun SH. Microsatellite alteration in histologically normal lung tissue of patients with non-small cell lung cancer. Lung Cancer 2000; 30:83-9. [PMID: 11086201 DOI: 10.1016/s0169-5002(00)00189-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Microsatellite alteration (MSA) has been observed in a fraction of non-small cell lung cancer (NSCLC). Most prior studies regarding MSA in lung cancer have usually used adjacent non-malignant lung tissues as a source of constitutional DNA. However, these normal tissues might have genetic alterations because the entire field of bronchial tree is exposed to the same carcinogenic insult. The aim of this study was to search if MSA is present in the histologically normal lung tissue of patients with NSCLC. Tumor and corresponding normal lung tissue specimens were obtained from 20 patients with NSCLC. Normal lung tissue specimens were obtained from either the opposite end of resected surgical samples or as distant from the tumor as possible. They were examined histopathologically and confirmed as normal by H-E stain. Patients' peripheral lymphocytes were used as the source for the normal DNA. Sixteen markers on 3p and 9p (nine and seven markers, respectively) were used. MSA was detected in seven of 20 (35%) histologically normal lung tissue specimens at a frequency similar to that observed in tumor tissue (eight of 20, 40%). Five cases showed MSA in both normal lung tissue and the corresponding tumor. In these five cases, MSA in normal lung tissue was detected at the same microsatellite markers which MSA was detected in the corresponding tumor. The number and size of novel bands in normal lung tissue was identical to that in tumor tissue except in one case. In which case, the same pattern of MSA was found in both normal lung tissue and corresponding tumor tissue at two markers. However, at one marker, while one identical novel band was detected in normal lung tissue and corresponding tumor tissue, another novel band was found only in tumor tissue. In two of 12 patients whose tumor was negative for the presence of MSA, MSA was detected in normal lung tissue. These results indicate that genetic alterations are widely distributed in the lung tissue of patients with lung cancer and provide considerable support for the field cancerization theory. Screening for MSA in resected normal lung tissue might be a new method to identify patients at high risk for developing second primary lung cancers.
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Affiliation(s)
- J Y Park
- Department of Internal Medicine, Kyungpook National University Hospital, Samduk 2Ga 50, Taegu, 700-412, South Korea.
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Cho SH, Kim YK, Oh HB, Jung JW, Son JW, Lee MH, Jee HS, Kim YY, Min KU. Association of HLA-DRB1(*)07 and DRB1(*)04 to citrus red mite (Panonychus citri) and house dust mite sensitive asthma. Clin Exp Allergy 2000; 30:1568-75. [PMID: 11069565 DOI: 10.1046/j.1365-2222.2000.00915.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
BACKGROUND Specific IgE responses to allergens provide useful models for evaluating the genetic factors that control human immune responses. A recent survey demonstrated that the citrus red mite (Panonychus citri, CRM) is the most important allergen in the development of asthma in citrus farmers. OBJECTIVE The aim of this study was to evaluate whether susceptibility or resistance to CRM-induced asthma was associated with HLA-DRB1 gene. METHODS DNAs were extracted from two groups of unrelated Korean adults living around citrus farms: (1) Ninety-one adults with CRM-sensitive asthma; and (2) 98 exposed, healthy nonatopic controls. Genotypes of HLA-DRB1 alleles were carried out using PCR-based methods. RESULTS Allelic frequency of HLA-DRB1(*)07 was higher in the CRM-sensitive asthmatics compared to the controls (17.6% vs 4.1%, Pc = 0.01). Conversely, the frequency of DRB1*04 was lower in the CRM-sensitive asthmatics compared to the controls (19.8% vs 40.8%, Pc = 0.01). No significant difference was found in the distributions of the other HLA-DRB1 gene-encoded antigens between the two groups. CONCLUSION HLA-DRB1 genes may be involved in the development of CRM-induced asthma. In addition, HLA-DR7 may increase, and DR4 decrease, the risk of developing the asthma in CRM-exposed adults.
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Affiliation(s)
- S H Cho
- Department of Internal Medicine, Seoul National University College of Medicine, Korea
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Lee MH, Cho SH, Park HS, Bahn JW, Lee BJ, Son JW, Kim YK, Koh YY, Min KU, Kim YY. Citrus red mite (Panonychus citri) is a common sensitizing allergen among children living around citrus orchards. Ann Allergy Asthma Immunol 2000; 85:200-4. [PMID: 11030274 DOI: 10.1016/s1081-1206(10)62467-2] [Citation(s) in RCA: 24] [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] [Indexed: 11/21/2022]
Abstract
BACKGROUND A recent investigation has suggested that Panonychus citri (citrus red mite) is the most common causative allergen in citrus-cultivating farmers with asthma or allergic rhinitis. OBJECTIVE A cross-sectional survey was performed to evaluate the prevalence of asthma and sensitization to P. citri among children living around citrus orchards. METHODS A total of 1,055 children living around citrus orchards were enrolled. There were 544 boys and 511 girls with a mean age of 12.3 (range 7 to 16) years. They were evaluated by the ISAAC questionnaire, and a skin prick test with 13 common aeroallergens including P. citri and Japanese cedar pollen. Children who recorded ever having experienced wheezing on the questionnaire were evaluated by methacholine bronchial provocation test and determined to have asthma if they showed bronchial hyperresponsiveness to methacholine simultaneously. RESULTS The positive skin test response to one or more inhalant allergens except P. citri was 35.5%, but when including P. citri, the positive response increased to 37.7%. The most common sensitizing allergens in the order of decreasing frequency were Dermatophagoides pteronyssinus (26.6%), D. farinae (22.7%), P. citri (14.2%), cockroach (11.3%), and Japanese cedar pollen (9.7%). Among the children without sensitization to house dust mites, the sensitization rate to P. citri was significantly higher in those 13 and over than in those under 12 (5.8% versus 2.5%, P < .05). The prevalence of asthma was not different between the children with sensitization to P. citri and those without it (5.4% versus 4.0%, P > .05), although the prevalence was higher in those with sensitization to D. pteronyssinus or D. farinae than in those without sensitization to these allergens (7.9% versus 2.9%, P < .05; 9.7% versus 2.6%, P < .05). CONCLUSION Citrus red mite is a common sensitizing allergen among children living around citrus orchards. The features of sensitization and development of asthma are different between citrus red mite and house dust mites.
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Affiliation(s)
- M H Lee
- Department of Pediatrics, Cheju University College of Medicine, Korea
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Park HS, Kim HY, Kim YK, Son JW, Nahm DH, Cho SH, Min K, Kim YY. Specific IgG1 and IgG4 antibodies to citrus red mite in citrus farmers: a study of their relationship to respiratory symptoms. J Korean Med Sci 2000; 15:407-12. [PMID: 10983688 PMCID: PMC3054667 DOI: 10.3346/jkms.2000.15.4.407] [Citation(s) in RCA: 5] [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] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Citrus red mite (CRM) is known as the most common sensitizing allergen in subjects with asthma and rhinitis working on citrus farms. The aim of this study is to evaluate the role of specific IgG1 (slgG1) and specific IgG4 (slgG4) to CRM in citrus farmers. Questionnaire survey and skin prick test including CRM antigen was done by 136 workers. Specific IgE (slgE), slgG1 and slgG4 to CRM were detected by enzyme-linked immunosorbent assay (ELISA). CRM-sensitive-asthma was diagnosed upon presence of asthmatic symptoms by questionnaire, airway hyperresponsiveness to methacholine and slgE to CRM. CRM-sensitive rhinitis was diagnosed upon presence of rhinitis symptoms and slgE to CRM. Eleven (8.1%) had CRM-sensitive asthma and 25 (18.4%) had CRM-sensitive rhinitis. Significant association was noted between presence of asthmatic symptoms and slgE or slgG4 (p<0.05, respectively), while no significant association was noted in slgG1 (p>0.05). Significant association was noted in the prevalence between slgG4 and slgE (p<0.05), while no significant association was noted between slgG1 and slgG4 or slgE (p<0.05, respectively). There was a significant correlation between slgE and slgG4 level (r=0.39, p<0.05). These findings suggest that the presence of slgG1 to CRM is response to CRM exposure, and further studies will be needed to evaluate the role of slgG4.
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Affiliation(s)
- H S Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea.
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Kim MY, Shin MK, Son JW, Kwak HI, Fang MZ, Bae MO, Kim JH, Cho MH, Kang KK, Kim WB, Ahn BO. One-month parenteral toxicity study of recombinant human basic fibroblast growth factor in dogs. Vet Hum Toxicol 2000; 42:234-5. [PMID: 10928692] [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] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
A 1-mo toxicity study followed by a 1-mo recovery period of recombinant human basic fibroblast growth factor (bFGF) was performed using Beagle dogs at doses of 30, 120 or 480 mg/kg/d to estimate the no observed adverse effect level (NOAEL). Subcutaneous thickening was seen and its incidence, as well as that of stiffness of the injection sites, increased with dose. There were neither dead animals nor significant changes of body weight during the experimental period. In addition, no significant bFGF-related changes were found in ophthalmologic and histopathological examination, urinalysis and hematological, biochemical and organ weight parameters. At necropsy, red-brownish spots and/or nodule formations were recognized in a dose-dependent manner. Splenomegaly was noted in the 480 mg/kg group, but these findings had a low incidence in all dose groups. The findings in the dosing period disappeared or were ameliorated during the recovery period. The above data suggests the NOAEL of bFGF in Beagle dogs is >480 mg/kg/d.
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Affiliation(s)
- M Y Kim
- Laboratory of Toxicology, College of Veterinary Medicine, Seoul National University
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Min KU, Kim YK, Park HS, Lee MH, Lee BJ, Son JW, Kim YY, Cho SH. Bronchial responsiveness to methacholine is increased in citrus red mite (Panonychus citri)-sensitive children without asthmatic symptoms. Clin Exp Allergy 2000; 30:1129-34. [PMID: 10931120 DOI: 10.1046/j.1365-2222.2000.00862.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [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: 11/20/2022]
Abstract
BACKGROUND A recent investigation has suggested that citrus red mite (Panonychus citri, CRM) is a common sensitizing allergen among children living around citrus farms. OBJECTIVE A cross-sectional survey was performed to evaluate the bronchial responsiveness to methacholine in CRM-sensitive children without asthmatic symptoms. SUBJECTS AND METHODS A total of 375 children living around citrus farms were enrolled in this study. There were 201 boys and 174 girls with a mean age of 12.5 (range 7-16) years. Each subject was evaluated by a questionnaire, a skin prick test with 13 common inhalant allergens including CRM, and a methacholine bronchial provocation test (MBPT). RESULTS Positive rate of MBPT (PC20-methacholine < 25 mg/mL) was higher in atopic rhinitic and atopic control children than in nonatopic rhinitic and nonatopic control subjects (41.3% and 33.3% vs 17.2% and 15.4%, respectively, both P < 0.05). Slope of dose-response curve (DRS, %/mg/mL) was higher in atopic rhinitic children than in nonatopic rhinitic, atopic control and nonatopic control subjects (14.3 +/- 0.87 vs 9.4 +/- 0.72, 10.0 +/- 1.37 and 9.2 +/- 1.51, P < 0.05, respectively). Both the positive rate of MBPT and the DRS were increased in children with positive skin response to CRM than in those without sensitization (48.2% vs 22.9%, P = 0.0001; 15.6 +/- 1.26 vs 10.2 +/- 0.65, P = 0.0001). CONCLUSION Bronchial responsiveness is increased in citrus red mite-sensitive children even if they have no asthmatic symptoms.
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Affiliation(s)
- K U Min
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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Abstract
The detection of bone metastases is important in the management of patients with lung cancer because bone metastasis has a major impact on the prognosis and choice of treatment modality. Bone scan has been widely used for early detection of bone metastases but its low specificity complicates confirmation of bone scan findings. To evaluate the effects of abnormal bone scan findings on the prognosis of patients with lung cancer, we retrospectively analyzed the effect of abnormal uptakes on the prognosis of patients with primary lung cancer. The overall survival of patients with abnormal bone uptake was not significantly different from those without abnormal uptake. However, the patients with more than two abnormal bone uptakes had significantly shorter survival than those with no abnormal uptake (P<0.05). To confirm the effect of abnormal bone uptakes on survival, we compared the survival curves of three patient groups without knowledge of bone scan findings: group A, stage I-IIIB with more than two abnormal bone uptakes (potential stage IV); group B, stage IIIB with no abnormal bone uptake (true stage IIIB); and group C, stage IV with no abnormal bone uptake. Group A revealed shorter survival than group B (P<0.05). But, there was no significant difference in survival times between group A and group C. In the Cox regression analysis, the presence of more than two abnormal bone uptakes was a significant prognostic factor (P=0.0277), together with performance status, stage, and albumin. These results suggest that one or two abnormal bone uptake at diagnosis did not affect overall survival of the patients, and that the patients with more than two abnormal bone uptakes are considered as clinical stage IV because of high probability of bone metastases.
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Affiliation(s)
- J Y Park
- Department of Internal Medicine, Kyungpook National University Hospital, Samduk 2ga 50, Taegu, South Korea.
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Abstract
A case of endotracheal tuberculosis with expectorations of the lateral one-third of the multiple tracheal cartilages is reported. Fibreoptic bronchoscopy revealed caseous materials and loosening of the tracheal cartilages. The patient expectorated cartilaginous material several times before and after fibreoptic bronchoscopy. In spite of the loss of tracheal cartilages, tracheal lumen was maintained with a mild airflow limitation. The remaining two-thirds of the tracheal cartilage rings seemed to be strong enough to support the tracheal lumen opening during the respiratory cycle. Although rare, expectoration of bronchial cartilage can be one of the clinical features of endobronchial tuberculosis.
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Affiliation(s)
- M J Park
- Dept of Internal Medicine, Hallym University, Seoul, Korea
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Kim YK, Lee MH, Jee YK, Hong SC, Bae JM, Chang YS, Jung JW, Lee BJ, Son JW, Cho SH, Min KU, Kim YY. Spider mite allergy in apple-cultivating farmers: European red mite (Panonychus ulmi) and two-spotted spider mite (Tetranychus urticae) may be important allergens in the development of work-related asthma and rhinitis symptoms. J Allergy Clin Immunol 1999; 104:1285-92. [PMID: 10589014 DOI: 10.1016/s0091-6749(99)70026-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.4] [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
BACKGROUND Recent investigations have suggested that the citrus red mite (Panonychus citri) is the most important allergen affecting citrus-cultivating farmers with asthma, allergic rhinitis, or both. OBJECTIVE We sought to evaluate type I hypersensitivity to spider mites, particularly the European red mite (Panonychus ulmi) and the two-spotted spider mite (Tetranychus urticae), and to determine the relationship between hypersensitivity to spider mites and respiratory dysfunction. METHODS We performed a cross-sectional survey. Questionnaires were given, and skin prick tests for 11 inhalant allergens common in Korea and 2 species of spider mites (European red mite and two-spotted spider mite) were performed in 725 apple-cultivating farmers in Korea. RESULTS Results of skin prick tests in the apple farmers indicated that European red mite (23.2%) was the most common sensitizing allergen, followed by Tyrophagus putrescentiae (21.2%), two-spotted spider mite (16.6%), Dermatophagoides farinae (16.3%), D pteronyssinus (14.4%), cockroach (13.1%), and Hop Japanese (Humulus Japonicus) pollen (12.0%). Positive skin responses (mean wheal size >/=3 mm) to one or more of 13 inhalant allergens were found in 48.2% of farmers tested, whereas 40 subjects (8.6%) had an isolated skin response to the spider mites. Among 119 farmers with work-related asthmatic symptoms, the positive skin response rates to European red mite and two-spotted spider mite were 40.4% and 27.0%, respectively. These figures were significantly higher than those found among farmers without work-related symptoms (19.1% and 14.1%, respectively; P <.01). The prevalence of work-related asthma symptoms was higher in farmers with positive skin responses to spider mites than in those with negative skin responses to spider mites and those with positive skin responses to any allergen tested (31.4% vs 15.0% vs 21.0%, respectively; P <.05). CONCLUSION Spider mites, particularly European red mite and 2-spotted spider mite, are common sensitizing allergens in apple-cultivating farmers. These spider mites may be important causative allergens in the development of work-related respiratory symptoms in these workers.
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Affiliation(s)
- Y K Kim
- Department of Internal Medicine, Seoul National University College of Medicine, and the Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, Korea
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Park HS, Kim HY, Nahm DH, Son JW, Kim YY. Specific IgG, but not specific IgE, antibodies to toluene diisocyanate-human serum albumin conjugate are associated with toluene diisocyanate bronchoprovocation test results. J Allergy Clin Immunol 1999; 104:847-51. [PMID: 10518831 DOI: 10.1016/s0091-6749(99)70297-6] [Citation(s) in RCA: 70] [Impact Index Per Article: 2.8] [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: 11/20/2022]
Abstract
BACKGROUND The role of specific IgG to toluene diisocyanate (TDI) in the pathogenesis of TDI-induced asthma still remains unclear. OBJECTIVE We sought to evaluate the clinical significance of serum-specific IgG to TDI-human serum albumin (HSA) conjugate in subjects with TDI-induced asthma compared with specific IgE antibody. METHODS One hundred three subjects were enrolled and divided into 4 groups according to specific bronchoprovocation test (BPT) results: 50 subjects with TDI-induced asthma with positive results on TDI BPT were defined as group 1, 13 symptomatic workers exposed to TDI with negative results on TDI BPT were defined as group 2, 20 unexposed patients with allergic asthma were defined as group 3, and 20 unexposed healthy control subjects were defined as group 4. Serum-specific IgG and IgE antibodies to TDI-HSA conjugate were detected by means of ELISA. RESULTS The prevalence of specific IgG antibody to TDI-HSA conjugate was significantly higher in group 1 than in group 2 (46% vs 7.7%, P =.01) or group 3 (0%, P <.01). No significant difference was noted between group 2 and group 3 (P >. 05). However, the prevalence of specific IgE antibody to TDI-HSA conjugate was not significantly different between group 1 and group 2 (14% vs 7.7%, P >.05) or group 2 and group 3 (7.7% vs 0%, P >.05). There was no significant difference in prevalence of specific IgE or specific IgG according to the type of asthmatic response during the TDI BPT (P >.05). Overall, statistically significant association was noted between the prevalence of specific IgE and IgG antibodies in 103 subjects (P <.05), but no difference was noted within group 1 subjects only (P >.05). CONCLUSION These findings demonstrate that the presence of serum-specific IgG is closely related to TDI BPT results, and it may contribute to the development of TDI-induced asthma.
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Affiliation(s)
- H S Park
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
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Kim YK, Cho SH, Koh YY, Son JW, Lee BJ, Min KU, Kim YY. Linkage between IgE receptor-mediated histamine releasability from basophils and gene marker of chromosome 11q13. J Allergy Clin Immunol 1999; 104:618-22. [PMID: 10482837 DOI: 10.1016/s0091-6749(99)70333-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND The genetics of the regulation of the release of mediators involving the interaction of IgE with cells and their ability to release mediators have not been extensively investigated. With use of the candidate gene approach, it was reported that the gene regulating the beta chain of the high-affinity receptor for IgE is on chromosome 11q13. OBJECTIVE To determine whether gene(s) in chromosome 11q13 may control the expression of maximal histamine release from basophil to anti-IgE stimuli, linkage analysis between this phenotype and the gene marker of chromosome 11q13 was performed. METHODS Maximal histamine release to anti-IgE and calcium ionophore A23187 and genotyping chromosome 11q13 with use of microsatellite marker (D11S97) were performed in 56 probands with asthma and 59 of their siblings. The linkage was analyzed by affected sib-pair analysis and the quantitative trait locus approach. RESULTS Maximal histamine release (mean +/- SE) to anti-IgE and A23187 was 43.3% +/- 3.5% and 30.9 +/- 3.4% in probands and 29.5% +/- 2.6% and 22.2% +/- 2.7 in siblings, respectively. Of 20 sib-pairs with the maximal histamine release to anti-IgE more than 33% (mean plus 1 SD of nonasthmatic controls), 11 (55%) shared 2 D11S97 alleles, 9 (45%) shared 1 allele, and neither sib-pair shared identical alleles, which indicates a significant linkage of maximal histamine to anti-IgE and gene marker of chromosome 11q13 (P =.02). The difference (mean +/- SE) of the maximal histamine release to anti-IgE between each proband and sibling was smaller in sib-pairs with 2 identical alleles than in those with 1 identical allele and with no identical allele (14.1% +/- 2.6% vs 25.8% +/- 3.1% vs 41.0% +/- 4.9%). However, the difference (mean +/- SE) to A23187 between each proband and sibling was not different among the 3 groups (9.7% +/- 1.8% vs 17.9% +/- 3.6% vs 10.4% +/- 4.8%). CONCLUSION Maximal histamine release from basophils to anti-IgE stimuli was linked to the gene marker of chromosome 11q13.
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Affiliation(s)
- Y K Kim
- Department of Internal Medicine, Seoul National University College of Medicine, and the Institute of Allergy and Clinical Immunology, Seoul, Korea
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Kim YK, Son JW, Kim HY, Park HS, Lee MH, Cho SH, Min KU, Kim YY. Citrus red mite (Panonychus citri) is the most common sensitizing allergen of asthma and rhinitis in citrus farmers. Clin Exp Allergy 1999; 29:1102-9. [PMID: 10457115 DOI: 10.1046/j.1365-2222.1999.00607.x] [Citation(s) in RCA: 37] [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: 11/20/2022]
Abstract
OBJECTIVE To evaluate type I hypersensitivity to citrus red mite (Panonychus citri), its prevalence, and relationship to respiratory dysfunction, a cross-sectional survey was performed among citrus farmers on Cheju Island, Korea. MATERIALS AND METHODS Questionnaires, and skin prick test responses to 11 common inhalant allergens and citrus red mite were performed in 181 citrus farmers, and serum-specific IgE antibodies to citrus red mite were measured by ELISA in sera of 123 subjects. To determine airway hyperresponsiveness, methacholine bronchial provocation tests were performed in 55 subjects who complained of recurrent lower respiratory symptoms. RESULTS The prevalence of asthma-based on presence of asthmatic symptoms on the questionnaire and airway hyperresponsiveness to methacholine, and allergic rhinitis based on presence of nasal symptoms on the questionnaire and positive skin-test response were 12.1% and 19.3%, respectively. The positive rate of skin responses to one or more of 11 common inhalant allergens excluding citrus red mite was 17.1%, and if citrus red mite was included, 25.9% of farmers had positive responses. On skin prick tests, citrus red mite (16.5%) was the most common sensitizing allergen, followed by cockroach (11.0%), Dermatophagoides pteronyssinus (9.9%), and D. farinae (9.3%). Among farmers with asthma and allergic rhinitis, the positive skin responses to citrus red mite were noted in 54.5 and 68.5%, respectively. Serum-specific IgE antibodies to citrus red mite were detected in 45 farmers (36. 5%) of the 123 tested, and there was significant correlation between specific IgE level and weal (A/H ratio) to citrus red mite (r = 0.57, P < 0.001). The prevalence of asthma was higher in subjects with positive skin responses or high serum-specific IgE antibodies to citrus red mite than in those without skin response or serum specific IgE (P < 0.05, respectively). CONCLUSION Citrus red mite is the most important allergen in citrus farmers with asthma and rhinitis in which causative allergen has not been identified. It should be included in the skin test battery for screening the causative allergen in farmers exposed to citrus red mite.
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Affiliation(s)
- Y K Kim
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul
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Kim YK, Cho SH, Koh YY, Son JW, Jee YK, Lee MH, Min KU, Kim YY. Skin reactivity to inhalant allergens, total serum IgE levels, and bronchial responsiveness to methacholine are increased in parents of nonatopic asthmatic children. J Allergy Clin Immunol 1999; 104:311-6. [PMID: 10452750 DOI: 10.1016/s0091-6749(99)70372-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
BACKGROUND Family studies suggest that asthma has an increased familial occurrence, but the hypothesis of a genetic predisposition to IgE response and bronchial hyperresponsiveness (BHR) on the expression of nonatopic asthma is controversial. OBJECTIVE The aim of this study was to evaluate familial predisposition to IgE response and BHR on expression of nonatopic asthma. METHODS One hundred four parents of nonatopic asthmatic children, 154 parents of atopic asthmatic children, 78 parents of atopic nonasthmatic control children, and 80 parents of nonatopic control children provided questionnaire data and underwent allergy skin prick tests with 10 inhalant allergens and methacholine bronchial provocation tests. Total serum IgE levels were determined in 352 parents (134 with atopic asthmatic children, 87 with nonatopic asthmatic children, 65 with atopic control children, and 66 with nonatopic control children). RESULTS Prevalence of asthma, based on questionnaire data and on BHR to methacholine, was higher among parents of nonatopic asthmatic children (10.6%) and atopic asthmatic children (9.1%) than among those of nonatopic control children (1.3%). BHR to methacholine was higher among parents of nonatopic asthmatic children (19.2%) and atopic asthmatic children (16.2%) than among those of atopic and nonatopic control children (5.1% and 1.3%, respectively). The percentage of positive skin test responses to 10 inhalant allergens was higher among parents of atopic asthmatic children (43.9%), nonatopic asthmatic children (39.4%), and atopic control children (38.5%) than among those of nonatopic control children (23.7%). Geometric means (IU/mL +/- SEM) of total serum IgE were higher among parents of atopic and nonatopic control children than among those of nonatopic control children (2.11 +/- 0.05 vs 2. 20 +/- 0.06 vs 2.09 +/- 0.07 vs 1.92 +/- 0.06). CONCLUSION Nonatopic asthma runs in families. The prevalence of positive skin test responses to inhalant allergens, BHR to methacholine, and total serum IgE levels is higher among the parents of nonatopic and atopic asthmatic children than among those of nonatopic control children.
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Affiliation(s)
- Y K Kim
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, Korea
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