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Choi Y, Kim IK, Kim SJ, Kim HS, Kang YA, Song JS. Predictors of positive tuberculin skin test in neonates exposed to pulmonary tuberculosis. PLoS One 2024; 19:e0303050. [PMID: 38722990 PMCID: PMC11081389 DOI: 10.1371/journal.pone.0303050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Accepted: 04/18/2024] [Indexed: 05/13/2024] Open
Abstract
BACKGROUND Neonates are at risk of nosocomial tuberculosis (TB) infection from health care workers (HCWs) in neonatal care facilities, which can progress to severe TB diseases. Tuberculin skin test (TST) is commonly used for TB diagnosis, but its accuracy in neonates is influenced by various factors, including bacilli Calmette-Guérin (BCG) vaccination. This study aimed to identify predictors of positive TSTs in neonates exposed to HCWs with pulmonary TB. METHODS A retrospective observational study was conducted to compare the frequency of predictors between TST-positive and TST-negative neonates. Demographic, epidemiological, and clinical data of neonates exposed to TB, along with that of HCW and household contacts, were collected retrospectively through contact investigations with the Korean National TB Surveillance System (KNTSS) database. TSTs using 2 tuberculin units of purified protein derivative RT23 were performed on exposed neonates at the end of preventive TB treatment. Firth logistic regression was performed to identify predictors of TST positivity. RESULTS Contact investigations revealed that 152 neonates and 54 HCWs were exposed to infectious TB index cases in 3 neonatal care facilities. Of 152 exposed neonates, 8 (5.3%) had positive TST results. Age of 6 days or more at the initial exposure is a statistically significant predictor of positive TST (Firth coefficient 2.1, 95% confidence interval 0.3-3.9, P = 0.024); BCG vaccination showed no statistical significance in both univariable and multivariable analysis. Sex, prematurity, exposure duration, duration from initial exposure to contact investigation, and isoniazid preventive treatment duration were not significant predictors. CONCLUSION Age at the initial exposure is a significant predictor of positive TST in neonates exposed to active pulmonary TB. Given the complexities of TST interpretation, including false positives due to BCG vaccination, careful risk assessment is necessary for appropriate decision-making and resource allocation in the management of neonatal TB exposure.
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Affiliation(s)
- Yun Choi
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Korea Disease Control and Prevention Agency, Seoul, Republic of Korea
| | - In Kyoung Kim
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Korea Disease Control and Prevention Agency, Seoul, Republic of Korea
| | - So Jung Kim
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Korea Disease Control and Prevention Agency, Seoul, Republic of Korea
| | - Hye Sung Kim
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Korea Disease Control and Prevention Agency, Seoul, Republic of Korea
| | - Young Ae Kang
- Department of Internal Medicine, Division of Pulmonary and Critical Care Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jin Su Song
- Graduate School of Global Development and Entrepreneurship, Handong Global University, Pohang, Republic of Korea
- Seoul National University College of Medicine, Seoul, Republic of Korea
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Suwajanakorn D, Lane AM, Go AK, Hartley CD, Oxenreiter M, Wu F, Gragoudas ES, Sullivan RJ, Montazeri K, Kim IK. Impact of gene expression profiling on diagnosis and survival after metastasis in patients with uveal melanoma. Melanoma Res 2024:00008390-990000000-00142. [PMID: 38578293 DOI: 10.1097/cmr.0000000000000971] [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: 04/06/2024]
Abstract
Surveillance frequency for metastasis is guided by gene expression profiling (GEP). This study evaluated the effect of GEP on time to diagnosis of metastasis, subsequent treatment and survival. A retrospective study was conducted of 110 uveal melanoma patients with GEP (DecisionDx-UM, Castle Biosciences, Friendswood, Texas, USA) and 110 American Joint Committee on Cancer-matched controls. Surveillance testing and treatment for metastasis were compared between the two groups and by GEP class. Rates of metastasis, overall survival and melanoma-related mortality were calculated using Kaplan-Meier estimates. Baseline characteristics and follow-up time were balanced in the two groups. Patients' GEP classification was 1A in 41%, 1B in 25.5% and 2 in 33.6%. Metastasis was diagnosed in 26.4% (n = 29) in the GEP group and 23.6% (n = 26) in the no GEP group (P = 0.75). Median time to metastasis was 30.5 and 22.3 months in the GEP and no GEP groups, respectively (P = 0.44). Median months to metastasis were 34.7, 75.8 and 26.1 in class 1A, 1B and 2 patients, respectively (P = 0.28). Disease-specific 5-year survival rates were 89.4% [95% confidence interval (CI): 81.0-94.2%] and 84.1% (95% CI: 74.9-90.1%) in the GEP and no GEP groups respectively (P = 0.49). Median time to death from metastasis was 10.1 months in the GEP group and 8.5 months in the no GEP group (P = 0.40). There were no significant differences in time to metastasis diagnosis and survival outcomes in patients with and without GEP. To realize the full benefit of GEP, more sensitive techniques for detection of metastasis and adjuvant therapies are required.
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Affiliation(s)
- D Suwajanakorn
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
- Department of Ophthalmology, Center of Excellence in Retina, Faculty of Medicine, Chulalongkorn University and King Chulalongkorn Memorial Hospital, Bangkok, Thailand
| | - A M Lane
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
| | - A K Go
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
| | - C D Hartley
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
- Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, Nebraska
| | - M Oxenreiter
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
- Close Concerns, San Francisco, California, USA
| | - F Wu
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
| | - E S Gragoudas
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
| | - R J Sullivan
- Department of Medicine, Massachusetts General Hospital Cancer Center, Boston, Massachusetts, USA
| | - K Montazeri
- Department of Medicine, Massachusetts General Hospital Cancer Center, Boston, Massachusetts, USA
| | - I K Kim
- Ocular Melanoma Center, Retina Service, Massachusetts Eye and Ear, Boston, Massachusetts, USA
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Kim IK, Lee CS, Bae JH, Han SR, Alshalawi W, Kim BC, Lee IK, Lee DS, Lee YS. Perioperative outcomes of laparoscopic low anterior resection using ArtiSential ® versus robotic approach in patients with rectal cancer: a propensity score matching analysis. Tech Coloproctol 2024; 28:25. [PMID: 38231341 DOI: 10.1007/s10151-023-02895-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Accepted: 11/26/2023] [Indexed: 01/18/2024]
Abstract
BACKGROUND Total mesorectal excision using conventional straight fixed devices may be technically difficult because of the narrow and concave pelvis. Several laparoscopic articulating tools have been introduced as an alternative to robotic systems. The aim of this study was to compare perioperative outcomes between laparoscopic low anterior resection using ArtiSential® and robot-assisted surgery for rectal cancer. METHODS This retrospective study included 682 patients who underwent laparoscopic or robotic low anterior resection for rectal cancer from September 2018 to December 2021. Among them, 82 underwent laparoscopic surgery using ArtiSential® (group A) and 201 underwent robotic surgery (group B). A total of 73 [group A; 66.37 ± 11.62; group B 65.79 ± 11.34] patients were selected for each group using a propensity score matching analysis. RESULTS There was no significant difference in the baseline characteristics between group A and B. Mean operative time was longer in group B than A (163.5 ± 61.9 vs 250.1 ± 77.6 min, p < 0.001). Mean length of hospital stay was not significantly different between the two groups (6.2 ± 4.7 vs 6.7 ± 6.1 days, p = 0.617). Postoperative complications, reoperation, and readmission within 30 days after surgery were similar between the two groups. Pathological findings revealed that the circumferential resection margins were above 10 mm in both groups (11.00 ± 7.47 vs 10.17 ± 6.25 mm, p = 0.960). At least 12 lymph nodes were sufficiently harvested, with no significant difference in the number harvested between the groups (20.5 ± 9.9 vs 19.7 ± 7.3, p = 0.753). CONCLUSIONS Laparoscopic low anterior resection using ArtiSential® can achieve acceptable clinical and oncologic outcomes. ArtiSential®, a multi-joint and articulating device, may serve a feasible alternative approach to robotic surgery in rectal cancer.
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Affiliation(s)
- I K Kim
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - C S Lee
- Department of Colorectal Surgery, Hansol Hospital, Seoul, Republic of Korea
| | - J H Bae
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S R Han
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - W Alshalawi
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Department of Surgery, King Saud Medical City, Riyadh, Saudi Arabia
| | - B C Kim
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - I K Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - D S Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Y S Lee
- Division of Colorectal Surgery, Department of Surgery, Seoul St. Mary's Hospital College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Cho SB, Kim IK, Yeo CD, Lee SH. Association Between Clinicopathological Parameters and S100A8/A9 Expression According to Smoking History in Patients With Non-small Cell Lung Cancer. In Vivo 2024; 38:474-481. [PMID: 38148054 PMCID: PMC10756484 DOI: 10.21873/invivo.13462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/21/2023] [Accepted: 08/28/2023] [Indexed: 12/28/2023]
Abstract
BACKGROUND/AIM Lung cancer is a major cause of cancer-related deaths worldwide, and chronic inflammation caused by cigarette smoke plays a crucial role in the development and progression of this disease. S100A8/9 and RAGE are associated with chronic inflammatory diseases and cancer. This study aimed to investigate the expression of S100A8/9, HMBG1, and other related pro-inflammatory molecules and clinical characteristics in patients with non-small cell lung cancer (NSCLC). PATIENTS AND METHODS We obtained serum and bronchoalveolar lavage (BAL) fluid samples from 107 patients and categorized them as never or ever-smokers. We measured the levels of S100A8/9, RAGE, and HMGB1 in the collected samples using enzyme-linked immunosorbent kits. Immunohistochemical staining was also performed to assess the expression of S100A8/9, CD11b, and CD8 in lung cancer tissues. The correlation between the expression of these proteins and the clinical characteristics of patients with NSCLC was also explored. RESULTS The expression of S100A8/A9, RAGE, and HMGB was significantly correlated with smoking status and was higher in people with a history of smoking or who were currently smoking. There was a positive correlation between serum and BAL fluid S100A8/9 levels. The expression of S100A8/A9 and CD8 in lung tumor tissues was significantly correlated with smoking history in patients with NSCLC. Ever-smokers, non-adenocarcinoma histology, and high PD-L1 expression were significant factors predicting high serum S100A8/9 levels in multivariate analysis. CONCLUSION The S100A8/9-RAGE pathway and CD8 expression were increased in smoking-related NSCLC patients. The S100A8/9-RAGE pathway could be a promising biomarker for chronic airway inflammation and carcinogenesis in smoking-related lung diseases.
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Affiliation(s)
- Sung Bae Cho
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chang Dong Yeo
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea;
| | - Sang Haak Lee
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea;
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Bae S, Kim IK, Im J, Lee H, Lee SH, Kim SW. Impact of lipopolysaccharide-induced acute lung injury in aged mice. Exp Lung Res 2023; 49:193-204. [PMID: 38006357 DOI: 10.1080/01902148.2023.2285061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Accepted: 11/13/2023] [Indexed: 11/27/2023]
Abstract
Study Aim: As the geriatric population rapidly expands, there has been a concurrent increase in elderly admissions to intensive care units (ICUs). Acute lung injury (ALI) is a prevalent reason for these admissions and carries poorer survival rates for the aged population compared to younger counterparts. The aging lung is subject to physiological, cellular, and immunological changes. However, our understanding of how aging impacts the clinical progression of ALI is limited. This study explored the effect of aging using a murine model of ALI. Methods: Female C57BL/6J mice, aged 7-8 wk (young) and 18 months (aged), were divided into four groups: young controls, aged controls, young with ALI (YL), and aged with ALI (AL). ALI was induced via intratracheal administration of lipopolysaccharide (LPS, 0.5 mg/kg). The animals were euthanized 72 h after LPS exposure. Results: The AL group exhibited a significantly increased wet/dry ratio compared to the other three groups, including the YL group. The bronchoalveolar lavage (BAL) fluid in the AL group had more cells overall, including more neutrophils, than the other groups. Inflammatory cytokines in BAL fluid showed similar trends. Histological analyses demonstrated more severe lung injury and fibrosis in the AL group than in the other groups. Increased transcription of senescence-associated secretory phenotype markers, including PAI-1 and MUC5B, was more prominent in the AL group than in the other groups. This trend was also observed in BAL samples from humans with pneumonia. Conclusions: Aging may amplify lung damage and inflammatory responses in ALI. This suggests that physicians should exercise increased caution in the clinical management of aged patients with ALI.
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Affiliation(s)
- Sukjin Bae
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jeonghyeon Im
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Heayon Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sei Won Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Lee H, Kim IK, Im J, Jin BS, Kim HH, Kim SW, Yeo CD, Lee SH. Effects of aging on accompanying intermittent hypoxia in a bleomycin-induced pulmonary fibrosis mouse model. Korean J Intern Med 2023; 38:934-944. [PMID: 37793985 PMCID: PMC10636542 DOI: 10.3904/kjim.2023.090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 05/26/2023] [Accepted: 05/30/2023] [Indexed: 10/06/2023] Open
Abstract
BACKGROUND/AIMS Obstructive sleep apnea (OSA) is prevalent in older patients with idiopathic pulmonary fibrosis (IPF); however, it is underrecognized. OSA is characterized by intermittent hypoxia (IH) and sleep fragmentation. In this study, we evaluated the effects of IH in an older mouse model of bleomycin-induced lung fibrosis. METHODS Bleomycin-induced mice (C57BL/6, female) were randomly divided into four groups of young vs. old and room air (RA)-exposed vs. IH-exposed. Mice were exposed to RA or IH (20 cycles/h, FiO2 nadir 7 ± 0.5%, 8 h/day) for four weeks. The mice were sacrificed on day 28, and blood, bronchoalveolar lavage (BAL) fluid, and lung tissue samples were obtained. RESULTS The bleomycin-induced IH-exposed (EBI) older group showed more severe inflammation, fibrosis, and oxidative stress than the other groups. The levels of inflammatory cytokines in the serum and BAL fluid increased in the EBI group. Hydroxyproline levels in the lung tissue increased markedly in the EBI group. CONCLUSION This study demonstrates the possible harmful impact of OSA in an elderly mouse model of lung fibrosis. This study further suggests that older patients with IPF and OSA may be more of a concern than younger patients with IPF. Further research is required in this area.
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Affiliation(s)
- Heayon Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jeonghyeon Im
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Bae Suk Jin
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hwan Hee Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sei Won Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chang Dong Yeo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Kang HS, Kim IK, Yeo CD, Kim JW, Lee SH. Abstract 3947: S100A8/A9-RAGE pathway and chronic airway inflammation in cigarette smoke-induced lung carcinogenesis. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-3947] [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: 04/07/2023]
Abstract
Abstract
Background: Cigarette smoke-induced chronic airway inflammation increases the risk of lung cancer, and plays a multifaceted role in lung cancer initiation and progression, and RAGE-ligand axis (HMGB1, S100A8/A9) contributes Cigarette smoke-induced persistent and progressive inflammation. The aim of the present study was to determine the inflammatory effect on S100A8/A9-RAGE pathway in smoke-induced carcinogenesis in lung cancer.
Methods: Human alveolar adenocarcinoma cells (A549) and normal bronchial epithelial cells (BEAS-2B) were co-cultured for 24 h with the PBMC and then, cells were incubated in the presence or absence of 1.5% cigarette smoke extract (CSE) for 24 h. The cells transfected with siRNA targeting S100A8/9 or RAGE. The cell viability, colony-forming ability, migration, invasion, metastasis and morphological changes were assessed. Female A/J mice were given a benzo(a)pyrene (100mg/kg) in 0.1 ml corn oil via oral gavage at once a week for 3 weeks, and administrated CSE (1.25 ul/g) via intratracheal (IT) at twice a week for 4 weeks. Tumor load was determined by averaging the total tumor volume in each group. BAL differential cells were counted to analyze inflammatory cells.
Results: Cellular growth and colony-forming were promoted by exposure to CSE, and significantly inhibited by S100A8/9 and RAGE-siRNA transfection, especially in A549 cells than BEAS-2B. Cell migration, invasion, MMP-2/9 activities, and the mRNA and protein expression of TLR4, NF-κB, RAGE, S100A8/9 and HMBG1 were higher in CSE exposed A549 cells. S100A8/9 and RAGE-siRNA transfection attenuated those expression, significantly. B(a)P induced an average tumor volume 7.28 mm3 per mouse, and CSE significantly increased tumor volume (8.10 mm3) compared to the B(a)P group. The total cell number and lymphocytes in BAL fluids tended to increase after CSE administration in lung cancer mouse group. Moreover, CSE significantly induced the levels of S100A8/9 and RAGE, p38 and p-ERK, and decreased JNK in serum and tumors with adjacent lung tissues (p < 0.05).
Conclusions: We identified cigarette smoke-induced S100A8/A9-RAGE pathway promoted airway inflammation and lung carcinogenesis in vitro and in vivo. Although S100A8/A9 protein contributes to many types of disease, this study will help us gain a better understanding of the complexities of cancer progression. Further studies are needed for therapeutic target of cigarette smoke-induced inflammation and immunosuppression in tumor microenviornment.
Citation Format: Hye Seon Kang, In Kyoung Kim, Chang Dong Yeo, Jin Woo Kim, Sang Haak Lee. S100A8/A9-RAGE pathway and chronic airway inflammation in cigarette smoke-induced lung carcinogenesis. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 3947.
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Affiliation(s)
- Hye Seon Kang
- 1Bucheon St. Mary's Hospital, The Catholic University of Korea, Bucheon, Republic of Korea
| | - In Kyoung Kim
- 2Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chang Dong Yeo
- 3Eunpyeong St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Woo Kim
- 4Uijeongbu St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Republic of Korea
| | - Sang Haak Lee
- 3Eunpyeong St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
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Yeo CD, Kang HS, Kim IK, Lee SH, Kim JW. Abstract 6757: Identification of predictive factors for early relapse in patients with unresectable stage III NSCLC receiving consolidation durvalumab after concurrent chemoradiation. Cancer Res 2023. [DOI: 10.1158/1538-7445.am2023-6757] [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: 04/07/2023]
Abstract
Abstract
Background: Patients with locally advanced, unresectable, non-small cell lung cancer (NSCLC) receiving definitive concurrent chemoradiation (CCRT) benefit from durvalumab consolidation therapy. However, predictive factors for early relapse during durvalumab maintenance were not identified.
Patients and Methods: The present study used the lung cancer cohort of the Catholic Medical Centers at the Catholic University of Korea from 2018 to 2021. In all, 51 NSCLC patients that were treated with durvalumab consolidation therapy after definitive CCRT. Early relapse was considered if it occurred within 6 months of starting initial durvalumab therapy.
Results: During study period, 15 (29.4%) relapsed among 51 included patients. Median time from initial therapy of durvalumab to progression was 107.73 ± 47.69 days in early relapse group. In mutivariate analysis, younger age (HR 0.713, 95% CI 0.572-0.888, P=0.003), higher pack years (HR 1.311, 95% CI 1.109-1.549, P=0.001), non-COPD (HR 0.030, 95% CI 0.001-0.677, P=0.027), anemia (HR 23.30, 95% CI 2.030-267.48, P=0.011) and stage IIIC (vs. stage IIIA) (HR 17.890, 95% CI 1.997-160.243, P=0.010) were independent predictive factors for early relapse during durvalumab consolidation therapy.
Conclusion: Younger age, higher pack years, non-COPD, anemia and stage IIIC were independent predictive factors for early relapse during durvalumab consolidation therapy in patients with unresectable stage III NSCLC after definitive CCRT. Careful patient selection and clinical attention are needed for high-risk individuals.
Citation Format: Chang Dong Yeo, Hye Seon Kang, In Kyoung Kim, Sang Haak Lee, Jin Woo Kim. Identification of predictive factors for early relapse in patients with unresectable stage III NSCLC receiving consolidation durvalumab after concurrent chemoradiation. [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2023; Part 1 (Regular and Invited Abstracts); 2023 Apr 14-19; Orlando, FL. Philadelphia (PA): AACR; Cancer Res 2023;83(7_Suppl):Abstract nr 6757.
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Affiliation(s)
- Chang Dong Yeo
- 1St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hye Seon Kang
- 2St. Mary's Hospital, The Catholic University of Korea, Bucheon, Republic of Korea
| | - In Kyoung Kim
- 1St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Haak Lee
- 1St. Mary's Hospital, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Woo Kim
- 3St. Mary's Hospital, The Catholic University of Korea, Uijeongbu, Republic of Korea
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Cho SB, Kim IK, Kang HS, Lee SH, Yeo CD. S100A8/A9-RAGE pathway and chronic airway inflammation in smoke-induced lung carcinogenesis. Mol Cell Toxicol 2023. [DOI: 10.1007/s13273-023-00339-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
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Kim BY, Lee SH, Kim IK, Park JY, Bae JH. Chronic intermittent hypoxia impacts the olfactory nervous system in an age-dependent manner: pilot study. Eur Arch Otorhinolaryngol 2023; 280:241-248. [PMID: 35780199 DOI: 10.1007/s00405-022-07529-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/24/2022] [Indexed: 01/07/2023]
Abstract
PURPOSE Obstructive sleep apnea (OSA) is characterized by repetitive upper airway collapse during sleep, which induces chronic intermittent hypoxia (CIH). CIH results in low-grade inflammation, sympathetic overactivity, and oxidative stress. Nevertheless, it remains unclear how exposure to CIH affects olfaction. The purpose of this study was, therefore, to investigate the cytotoxic effects of CIH exposure on mouse olfactory epithelium and the underlying pathophysiology involved. METHODS Mice were randomly divided into four groups: Youth mouse (You) + room air (RA), You + intermittent hypoxia (IH), Elderly mouse (Eld) + RA, and Eld + IH (n = 6 mice/group). Mice in the two hypoxia groups were exposed to CIH. The control condition involved exposure to room air (RA) for 4 weeks. Olfactory neuroepithelium was harvested for histologic examination, gene ontology analysis, quantitative real-time polymerase chain reaction (qRT-PCR), and western blotting. RESULTS Based on qRT-PCR analysis, olfactory marker protein (OMP), Olfr1507, ADCY3, and GNAL mRNA levels were lower, whereas NGFR, CNPase, NGFRAP1, NeuN, and MAP-2 mRNA levels were higher in the You + IH group than in the You + RA group. Olfactory receptor-regulated genes, neurogenesis-related genes and immunohistochemical results were altered in nasal neuroepithelium under CIH exposure. CONCLUSIONS Based on genetic and cytologic analysis, CIH impacted the olfactory neuroepithelium in an age-dependent manner. Our findings suggest that CIH-induced damage to the olfactory neuroepithelium may induce more severe change in the youth than in the elderly.
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Affiliation(s)
- Boo-Young Kim
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Seoul Hospital, Ewha Womans University, Gangseo-gu, Gonghang-daero 260, Seoul, Korea.
| | - Sang Haak Lee
- Department of Clinical Laboratory, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Eunpyeong, Seoul, Korea
| | - In Kyoung Kim
- Department of Clinical Laboratory, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Eunpyeong, Seoul, Korea
| | - Ju Yeon Park
- Department of Clinical Laboratory, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Banpo, Seoul, Korea
| | - Jung Ho Bae
- Department of Otolaryngology-Head and Neck Surgery, School of Medicine, Seoul Hospital, Ewha Womans University, Gangseo-gu, Gonghang-daero 260, Seoul, Korea
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11
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Kim IK, Kim SJ, Bae KH, Kim MY, Oh JE, Lee MG, Kang YA, Song JS. A low risk of nosocomial transmission of subclinical tuberculosis to neonates in a postpartum care center under COVID-19 control measures. Osong Public Health Res Perspect 2022; 13:448-452. [PMID: 36617551 DOI: 10.24171/j.phrp.2022.0235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/27/2022] [Indexed: 12/23/2022] Open
Abstract
We report the results of investigating and managing a tuberculosis (TB) exposure in apostpartum care center. Among the contacts exposed to a nursing assistant with subclinical TB,5 of 44 neonates (11.4%) had positive tuberculin skin tests (TSTs) at 3 months of age, and all theTST-positive neonates received the Bacille Calmette-Guérin vaccination. Seven of 28 healthcareworkers (25.0%) and 1 of 3 household contacts (33.3%) were positive in the initial or repeatedinterferon-gamma release assay. None of the contacts developed TB disease during the studyperiod. Annual TB examinations of healthcare personnel at a postpartum care center under theTuberculosis Prevention Act in South Korea enabled the early detection of subclinical TB, whichreduced the risk of transmission to neonates under strict coronavirus disease 2019 preventionmeasures.
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Affiliation(s)
- In Kyoung Kim
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Seoul, Korea
| | - So Jung Kim
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Seoul, Korea
| | - Kyoung Hee Bae
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Seoul, Korea
| | - Mi Young Kim
- Gimhae Airport National Quarantine Station, Busan, Korea
| | - Ji Eun Oh
- Division of Public Health Administration, Suji-gu Public Health Center, Yongin, Korea
| | - Mi Gyeong Lee
- Division of Public Health Administration, Suji-gu Public Health Center, Yongin, Korea
| | - Young Ae Kang
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jin Su Song
- Division of Infectious Disease Response, Capital Regional Center for Disease Control and Prevention, Seoul, Korea.,Graduate School of Global Development and Entrepreneurship, Handong Global University, Pohang, Korea
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12
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Im J, Kwon HY, Kim IK, Yeo CD, Kim SW, Lee H, Kang HS, Lee SH. Normobaric hyperoxia re-sensitizes paclitaxel-resistant lung cancer cells. Mol Cell Toxicol 2022. [DOI: 10.1007/s13273-022-00225-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Pearsall CP, Blitzer DB, Zhao YZ, Yamabe TY, Kim IK, Bethancourt CB, Hu DH, Bergsohn JB, Kurlanksy PK, George IG, Smith CS, Takayama HT. Word of caution on adding hemiarch replacement to a proximal aortic aneurysm repair: long-term outcome analysis of over 1,000 patients. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.2264] [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 no consensus nor recommendation for the surgical management of a minimally dilated adjacent aortic segment, such as the proximal aortic arch, at the time of proximal aortic aneurysm repair. Consequently, clinical equipoise exists regarding whether to extend the proximal aortic aneurysm repair to include the proximal aortic arch, by performing a hemiarch replacement, to mitigate the future risk of aortic aneurysm-related events in the proximal aortic arch. We hypothesized that additional hemiarch replacement to excise a non- or minimally aneurysmal proximal aortic arch does not have clinical benefit in patients undergoing proximal aortic aneurysm repair.
Purpose
To compare the long-term survival and freedom from aortic-arch reoperation in patients undergoing proximal aortic aneurysm repair with and without additional hemiarch replacement.
Methods
A retrospective review was performed of all patients undergoing proximal aortic aneurysm repair at our Aortic Center between 2005 and 2019. Inclusion criteria included all patients with a diagnosed root or ascending aortic aneurysm undergoing root or ascending aortic replacement with or without hemiarch replacement. Exclusion criteria were Age <18 years, presence of aortic arch diameter ≥4.5 cm, type A aortic dissection, previous ascending aortic replacement, aneurysm rupture, and endocarditis. A total of 1132 patients (hemiarch =307) met inclusion criteria. Propensity score matching in a 2:1 ratio (573 non-hemiarch: 288 hemiarch) on 19 baseline characteristics was performed. The median follow-up was 29.7 months (range: 0.1–153.8 months).
Results
Hemiarch patients had a significantly lower 10-year survival rate (86.7%; 95% CI, 79.2–94.8 in non-hemiarch vs 81.9%; 95% CI, 75.9–88.3 in hemiarch; P=0.005). There was no significant difference in 10- year cumulative incidence of aortic-arch reintervention (0.7%; 95% CI, 0.3–1.9 in non-hemiarch vs 0.69%; 95% CI, 0.17–2.75 in hemiarch; P=0.99). Hemiarch patients had higher rates of in-hospital mortality (1% in non-hemiarch vs 4% in hemiarch; P<0.001), stroke (3% in non-hemiarch vs 6% in hemiarch; P=0.047), reoperation for bleeding (4% in non-hemiarch vs 9% in hemiarch; P=0.011), and respiratory failure (7% in non-hemiarch vs 13% in hemiarch; P=0.006). In multivariable COX analysis, hemiarch replacement was significantly associated with long-term mortality (HR, 2.19; 95% CI, 1.36–3.55; P<.001) but not with aortic-arch reintervention (HR, 1.14; 95% CI, 0.63–2.10, P=0.66).
Conclusions
Proximal aortic aneurysm repair with additional hemiarch was associated with higher mortality without a decrease in aortic-arch reintervention rates compared to isolated proximal aortic aneurysm repair. Furthermore, aortic arch reintervention rate was extremely low. These data call for caution in adding hemiarch replacement at the time of proximal aortic aneurysm repair.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Institute of Heath (NIH) 5T35HL007616-40 grant Matched Cohort: KM Survival CurveMatched Cohort: Cumulative Incidence
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Affiliation(s)
- C P Pearsall
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - D B Blitzer
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - Y Z Zhao
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - T Y Yamabe
- Shonan Kamakura General Hospital, 2. Department of Cardiovascular Surgery, Kamakura, Japan
| | - I K Kim
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - C B Bethancourt
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - D H Hu
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - J B Bergsohn
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - P K Kurlanksy
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - I G George
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - C S Smith
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
| | - H T Takayama
- Columbia University Medical Center, 1. Division of Cardiothoracic and Vascular Surgery, New York Presbyterian Hospital, New York, United States of America
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Kang HS, Kim IK, Kim JW. Abstract 376: Prognostic significance of Glasgow prognostic score in NSCLC patients treated with immunotherapy after platinum-based cytotoxic chemotherapy. Cancer Res 2021. [DOI: 10.1158/1538-7445.am2021-376] [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
Introduction: The Glasgow prognostic score (GPS) reflects the host systemic inflammatory response and is validated prognostic factor in lung cancer. However, little is known about the prognostic role in non-small cell lung cancer (NSCLC) patients treated with immunotherapy after platinum-based cytotoxic chemotherapy.
Patient and Methods: This study used a lung cancer cohort of the Catholic Medical Center of Korea between January 2018 and June 2020. We included the patients who were diagnosed with unresectable advanced stage NSCLC or recurrent disease after pulmonary resection and had received at least one regimen of platinum-based chemotherapy before being administered immunotherapy. The patients with NSCLC treated with anti-PD1 or anti-PD-L1 (pembrolizumab, nivolumab, or atezolizumab) and assessed the prognostic value of the GPS. The GPS was calculated using C-reactive protein and albumin concentrations within 1 week before starting anti-PD1 or anti-PD-L1 treatment.
Results: A total of 78 patients with NSCLC treated with immunotherapy as 2nd or 3rd line therapy after platinum-based chemotherapy. Kaplan-Meier analyses revealed that higher GPS was significant predictors of shorter progression free survival (PFS) (Log rank < 0.001) and overall survival (OS) (Log rank < 0.001). In cox-regression multivariate analysis, the hazard ratios for disease progression were 2.146 (95% CI: 0.814-5.656; P = 0.123) for a GPS of 1 and 9.73 (95% CI: 2.931-32.298, P < 0.001) for a GPS of 2 relative to a GPS of 0. Older age (P = 0.033), lower PD-L1 expression (P = 0.036) and higher GPS (P = 0.007) were independently associated with shorter OS.
Conclusion: Higher GPS were identified as one of poor prognostic factor for OS and PFS in NSCLC patients received immunotherapy as 2nd or 3rd line therapy after platinum-based chemotherapy.
Citation Format: Hye Seon Kang, In Kyoung Kim, Jin Woo Kim. Prognostic significance of Glasgow prognostic score in NSCLC patients treated with immunotherapy after platinum-based cytotoxic chemotherapy [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2021; 2021 Apr 10-15 and May 17-21. Philadelphia (PA): AACR; Cancer Res 2021;81(13_Suppl):Abstract nr 376.
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Affiliation(s)
- Hye Seon Kang
- The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- The Catholic University of Korea, Seoul, Republic of Korea
| | - Jin Woo Kim
- The Catholic University of Korea, Seoul, Republic of Korea
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15
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Kang HH, Kim IK, Yeo CD, Kim SW, Lee HY, Im JH, Kwon HY, Lee SH. The Effects of Chronic Intermittent Hypoxia in Bleomycin-Induced Lung Injury on Pulmonary Fibrosis via Regulating the NF-κB/Nrf2 Signaling Pathway. Tuberc Respir Dis (Seoul) 2020; 83:S63-S74. [PMID: 33027868 PMCID: PMC7837382 DOI: 10.4046/trd.2020.0112] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 10/08/2020] [Indexed: 12/15/2022] Open
Abstract
Background Obstructive sleep apnea (OSA) is associated with pulmonary fibrosis. Chronic intermittent hypoxia (CIH) is considered to be a surrogate of OSA. However, its exact role in pulmonary fibrosis remains uncertain. Therefore, we investigated the mechanism underlying CIH-induced pulmonary fibrosis and the role of the anti-fibrotic agent in bleomycin (BLE) induced lung injury. Methods Mice were divided into eight groups: the normoxia (NOR), CIH, NOR plus BLE, CIH plus BLE, NOR plus pirfenidone (PF), CIH plus PF, NOR plus BLE and PF, and CIH plus BLE and PF groups. BLE was administered intratracheally on day 14 following CIH or NOR exposure. Subsequently, the mice were exposed to CIH or NOR for an additional 4 weeks. PF was administered orally on day 5 after BLE instillation once daily for 3 weeks. Results In the BLE-treated groups, CIH-induced more collagen deposition in lung tissues than NOR, and significantly increased hydroxyproline and transforming growth factor-β expression. The CIH and BLE-treated groups showed increased lung inflammation compared to NOR or CIH groups. Following CIH with BLE treatment, nuclear factor-κB (NF-κB) protein expression was significantly increased, whereas nuclear factor-erythroid-related factor 2 (Nrf2) and heme oxygenase-1 protein levels were decreased. After PF treatment, NF-κB and Kelch-like ECH-associated protein 1 expression were suppressed, and Nrf2 expression was increased. Conclusion CIH accelerated lung fibrosis in BLE-induced lung injury in mice, potentially by regulating the NF-κB/Nrf2 signaling pathway. Our results implicate PF as a potential therapeutic agent for treating pulmonary fibrosis in individuals with OSA and idiopathic pulmonary fibrosis.
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Affiliation(s)
- Hyeon Hui Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Ulsan University Hospital, University of Ulsan College of Medicine, Ulsan, Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chang Dong Yeo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sei Won Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hea Yon Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jeong Hyeon Im
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hee Young Kwon
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
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16
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Kim SW, Kim IK, Yeo CD, Kang HH, Ban WH, Kwon HY, Lee SH. Effects of chronic intermittent hypoxia caused by obstructive sleep apnea on lipopolysaccharide-induced acute lung injury. Exp Lung Res 2020; 46:341-351. [PMID: 32791028 DOI: 10.1080/01902148.2020.1804646] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AIM OF THE STUDY Obstructive sleep apnea (OSA) is a common disease associated with significant morbidity and mortality. Sleep quality is an important issue; some patients with acute lung injury (ALI) have underlying OSA. However, the potential influences of OSA on ALI have not been reported until now. In this study, we evaluated the impact of preceding intermittent hypoxia (IH), a typical characteristic of OSA, on lipopolysaccharide (LPS)-induced ALI in a mouse model. METHODS C57BL/6J mice were randomly divided into four groups: room air-control (RA-CTL), intermittent hypoxia-control (IH-CTL), room air-lipopolysaccharide (RA-LPS), and intermittent hypoxia-lipopolysaccharide (IH-LPS) groups. The mice were exposed to RA or IH (20 cycles/h, FiO2 nadir 7 ± 0.5%, 8 h/day) for 30 days. The LPS groups received intratracheal LPS on day 28. RESULTS The IH-LPS group tended to exhibit more severe inflammation, fibrosis, and oxidative stress compared to the other groups, including the RA-LPS group. Total cell, neutrophil, and eosinophil counts in bronchoalveolar lavage fluid increased significantly in the IH-LPS group compared to the RA-LPS group. Compared to the RA-LPS group, the hydroxyproline level increased significantly in the IH-LPS group. In addition, the IH-LPS group exhibited significantly more terminal deoxynucleotidyl transferase dUTP nick end labeled-positive cells compared to the RA-LPS group. CONCLUSIONS We found that prior IH may negatively impact LPS-induced ALI in a mouse model. This result suggests that ALI in patients with OSA may be more of a concern. Further research into the mechanisms underlying the effects of IH on ALI is needed.
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Affiliation(s)
- Sei Won Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chang Dong Yeo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeon Hui Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Woo Ho Ban
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hee Young Kwon
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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17
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Abstract
Purpose/Aim of the study: Prolonged exposure to hyperoxia can cause injury to normal lung tissue. However, patients with acute hypoxic respiratory failure are frequently exposed to very high oxygen levels. This study investigated the effects of long term normobaric hyperoxia exposure in a mouse model of acute severe lung injury (SLI).Meterials and Methods: C57BL/6J mice were injected intratracheally with lipopolysaccharide (LPS, 4 mg/kg) to induce acute lung injury. After 2 h, mice were divided into two groups, and then exposed to room air or hyperoxic conditions for 48 h. Animals in the hyperoxia group were placed within their cages in a Plexiglass chamber with an atmosphere of 95% O2 maintained constant using an oxygen analyzer. After exposure to normoxia (N) or hyperoxia (H) for 48 h, the left lungs were collected for tissue paraffin block or oxidative stress assay. One lobe of the right lung was collected for lung/body weight ratio. The lung injury score and the mean linear intercept were evaluated in hematoxylin and eosin -stained lungs. The biochemical tests were performed by using ELISA assay.Results: Lung injury scoring, lung/body weight, and mean linear intercept were not significantly different between the N + LPS (NLPS) and H + LPS (HLPS) groups. Similar trends were observed in hydroxyproline and transforming growth factor-β (TGF-β) levels. Total cell and neutrophil counts in bronchoalveolar lavage fluid showed no significant differences between NLPS and HLPS groups. Histological analyses demonstrated more severe lung injury and fibrosis in the NLPS group than in the HLPS group. In addition, interleukin (IL)-1β was significantly decreased in the HLPS group compared to the NLPS group. Other inflammatory cytokines, such as tumor necrosis factor-α (TNF-α) and IL-6, showed similar trends. The malondialdehyde (MDA) level was significantly lower in the HLPS group than in the NLPS group.Conclusions: Exposure to hyperoxia did not augment lung injury in the LPS-induced lung injury model, and some indicators even showed better outcomes. These results suggest that long-term high-oxygen therapy in patients with SLI has low risk of lung injury.
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Affiliation(s)
- Jick Hwan Ha
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon, Republic of Korea
| | - Sei Won Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chang Dong Yeo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeon Hui Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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18
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Kang HS, Kwon HY, Kim IK, Ban WH, Kim SW, Kang HH, Yeo CD, Lee SH. Intermittent hypoxia exacerbates tumor progression in a mouse model of lung cancer. Sci Rep 2020; 10:1854. [PMID: 32024881 PMCID: PMC7002457 DOI: 10.1038/s41598-020-58906-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 01/02/2020] [Indexed: 02/07/2023] Open
Abstract
The purpose of this study was to evaluate whether obstructive sleep apnea (OSA)-related chronic intermittent hypoxia (CIH) influences lung cancer progression and to elucidate the associated mechanisms in a mouse model of lung cancer. C57/BL6 mice in a CIH group were exposed to intermittent hypoxia for two weeks after tumor induction and compared with control mice (room air). Hypoxia inducible factor 1α (HIF-1α), vascular endothelial growth factor (VEGF) and metastasis-related matrix metalloproteinases (MMP) were measured. The expression levels of several hypoxia-related pathway proteins including HIF-1α, Wnt/ß-catenin, the nuclear factor erythroid 2-related factor 2 (Nrf2) and mammalian target of rapamycin-ERK were measured by western blot. The number (P < 0.01) and volume (P < 0.05) of tumors were increased in the CIH group. The activity of MMP-2 was enhanced after CIH treatment. The level of VEGF was increased significantly in the CIH group (p < 0.05). ß-catenin and Nrf2 were translocated to the nucleus and the levels of downstream effectors of Wnt/ß-catenin signaling increased after IH exposure. CIH enhanced proliferative and migratory properties of tumors in a mouse model of lung cancer. ß-catenin and Nrf2 appeared to be crucial mediators of tumor growth.
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Affiliation(s)
- Hye Seon Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hee Young Kwon
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Woo Ho Ban
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sei Won Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeon Hui Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chang Dong Yeo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea. .,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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19
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Yeo CD, Kim IK, Ban WH, Kang HS, Kim JW, Kim SJ, Park JY, Lee SH. Chronic nicotine exposure affects programmed death-ligand 1 expression and sensitivity to epidermal growth factor receptor-tyrosine kinase inhibitor in lung cancer. Transl Cancer Res 2019; 8:S378-S388. [PMID: 35117115 PMCID: PMC8797781 DOI: 10.21037/tcr.2019.05.02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/30/2019] [Indexed: 01/03/2023]
Abstract
Background Smoking histories are independently associated with poor response to epidermal growth factor receptor (EGFR)-tyrosine kinase inhibitors (TKIs) in non-small cell lung cancer (NSCLC) patients with activating EGFR mutations. The aim of the present study was to determine the effect of nicotine exposure on programmed death-ligand 1 (PD-L1) expression in EGFR mutant lung cancer cells. Methods Human lung adenocarcinoma PC9 cells were exposed to 1 µM nicotine for 3 months designated as PC9/N, and cells were stimulated with gefitinib (0, 0.1, or 1 µM) for 48 hrs. Cell viability by the MTT assay and morphological changes by immunofluorescence staining were assessed. The protein expression of EGFR, mTOR, AKT, α1-nicotine acetylcholine receptor (nAchR) and PD-L1 were measured by Western blot. Gene expression of α1-nAchR and PD-L1 were examined by RT-PCR. Intratumoral levels of PD-L1 expression were compared according to the burden of smoking dosage in 54 EGFR mutant lung cancer patients. Results Cellular growth was inhibited by treatment with gefitinib, and PC9 cells were significantly more sensitive to gefitinib than PC9/N cells. Pleomorphic appearance with atypical nuclei and to be detached and shrunken with condensed nuclei in PC9 than PC9/N cells. The gene expression level of α1-nAchR and PD-L1 gene were higher in PC9/N cells compared to those in PC9 cells after treatment with gefitinib. Phosphorylation levels of EGFR, mTOR, AKT and PD-L1 level were decreased by gefitinib in PC9/N cells, which was to a lesser extent than that in PC9 cells. In tumors, heavy smokers (≥30 PY) showed 28.5% of ≥50% PD-L1 tumor proportion score (TPS) while light smoker and never smokers had 12.5% and 9.7% of ≥50% PD-L1 TPS, respectively. However, there was no statistical significance (P value =0.628). Conclusions Chronic nicotine exposure could increase PD-L1 expression related to intrinsic resistance to EGFR-TKI in NSCLC patients harboring activating EGFR mutation. Considering the clinical importance of inevitable EGFR resistance, further studies regarding the role of anti-PD-1/PD-L1 treatment are needed, especially in EGFR mutant smokers.
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Affiliation(s)
- Chang Dong Yeo
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Woo Ho Ban
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Hye Seon Kang
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jin Woo Kim
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Seung Joon Kim
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jong Y Park
- Department of Cancer Epidemiology, Moffitt Cancer Center, Tampa, FL, USA
| | - Sang Haak Lee
- Division of Pulmonology, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea.,Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
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Kim SW, Kim IK, Ha JH, Yeo CD, Kang HH, Kim JW, Lee SH. Normobaric hyperoxia inhibits the progression of lung cancer by inducing apoptosis. Exp Biol Med (Maywood) 2019; 243:739-748. [PMID: 29763371 DOI: 10.1177/1535370218774737] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Hypoxia is a critical characteristic of solid tumors with respect to cancer cell survival, angiogenesis, and metastasis. Hyperoxic treatment has been attempted to reverse hypoxia by enhancing the amount of dissolved oxygen in the plasma. In this study, we evaluated the effects of normobaric hyperoxia on the progression of lung cancer to determine whether oxygen toxicity can be used in cancer therapy. Following a tail vein injection of the Lewis lung carcinoma cells, C57BL/6J mice were exposed to a 24-h normobaric hyperoxia/normoxia cycle for two weeks. In addition, A549 lung cancer cells were incubated in a normobaric hyperoxia chamber for a 24-h period. As a result, the size and number of tumors in the lung decreased significantly with exposure to normobaric hyperoxia in the mouse model. Cell viability, colony-forming ability, migration, and invasion all decreased significantly in A549 cells exposed to normobaric hyperoxia and the normal control group exposed to normobaric hyperoxia showed no significant damage. Oxidative stress was more prominent with exposure to normobaric hyperoxia in cancer cells. A549 cells exposed to normobaric hyperoxia showed a significantly higher cell apoptosis ratio compared with A549 cells without normobaric hyperoxia exposure and normal human lung cells (BEAS-2B cells). The Bax/Bcl-2 mRNA expression ratio also increased significantly. Changes in the key regulators of apoptosis were similar between in vivo and in vitro conditions. The p-ERK level decreased, while the p-JNK level increased, after normobaric hyperoxia exposure in A549 cells. This study demonstrated the role of normobaric hyperoxia in inhibiting lung cancer. Normal tissue and cells showed no significant hyperoxic damage in our experimental setting. The anti-tumor effect of normobaric hyperoxia may due to the increased reactive oxygen species activity and apoptosis, which is related to the mitogen-activated protein kinase pathway. Impact statement Normobaric hyperoxia (NBO) is a feasible therapy for cancer with a low complication rate. Although NBO may be beneficial in cancer treatment, very few studies have been conducted; thus, the evidence is thin. This is the first study to clearly demonstrate morphological changes in lung cancer with NBO exposure and to investigate the underlying mechanisms both in vivo and in vitro. This study will arouse interest in NBO treatment and promote further research.
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Affiliation(s)
- Sei Won Kim
- 1 Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul 02559, Republic of Korea
| | - In Kyoung Kim
- 1 Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul 02559, Republic of Korea
| | - Jick Hwan Ha
- 2 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Incheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Incheon 21431, Republic of Korea
| | - Chang Dong Yeo
- 3 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu 11765, Republic of Korea
| | - Hyeon Hui Kang
- 1 Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul 02559, Republic of Korea
| | - Jin Woo Kim
- 3 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu 11765, Republic of Korea
| | - Sang Haak Lee
- 1 Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul 02559, Republic of Korea.,4 Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
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Lee J, Rhee CK, Lee JH, Yoon HJ, Kim IK, Hur J, Kang JY, Yoon HK, Lee SY, Kim YK. Effect of nintedanib on airway inflammation in a mouse model of acute asthma. J Asthma 2019; 57:11-20. [PMID: 30634874 DOI: 10.1080/02770903.2018.1544641] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Objective: New treatments are needed for cases of asthma that are refractory to traditional therapies. In this study, we examined the effect of oral nintedanib, an intracellular inhibitor of tyrosine kinases, on airway hyper-responsiveness (AHR) and airway smooth muscle cells, using a mouse model of experimental asthma. Methods: Asthma was experimentally induced in mice via subcutaneous injection of ovalbumin (OVA). A group of saline-injected mice served as a control group. The OVA mice were then divided into four treatment groups according to the dose of nintedanib. AHR was examined via exposure to vaporized methacholine. Airway inflammation was assessed via bronchoalveolar lavage fluid (BALF) cell counts and Th2 cytokine concentrations. Results: Baseline levels of AHR and airway inflammation were higher in OVA mice than in the control group. Treatment with nintedanib lowered AHR, BALF cell counts and BALF cytokine levels in a dose-dependent fashion. The effect of nintedanib was comparable to that of dexamethasone. In particular, treatment with nintedanib lowered the expression of transforming growth factor-β1 and inhibited the expression and phosphorylation of platelet-derived growth factor receptor-β, vascular endothelial growth factor receptor 1 (VEGFR1), VEGFR2, fibroblast growth factor receptor 2 (FGFR2), FGFR3, and extracellular signal-regulated kinase. Conclusions: Nintedanib lowered AHR and the expression of factors associated with airway inflammation and remodeling in a mouse model of experimental asthma. Our results suggest that nintedanib may be useful in the treatment of asthma.
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Affiliation(s)
- Jongmin Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Chin Kook Rhee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jong Hyuk Lee
- Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyon Jee Yoon
- Department of Obstetrics & Gynecology, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Jung Hur
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Ji Young Kang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyoung Kyu Yoon
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sook Young Lee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Young Kyoon Kim
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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Kang JY, Kim IK, Hur J, Kim SC, Lee SY, Kwon SS, Kim YK. Expression of Muscarinic Receptors and the Effect of Tiotropium Bromide in Aged Mouse Model of Chronic Asthma. Tuberc Respir Dis (Seoul) 2019; 82:71-80. [PMID: 30574690 PMCID: PMC6304325 DOI: 10.4046/trd.2018.0049] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 09/29/2018] [Accepted: 10/04/2018] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Efficacy and safety of tiotropium bromide, a muscarinic receptor antagonist, in treatment of asthma have been reported. However, its effect on airway remodeling in chronic asthma of the elderly has not been clearly verified. The objective of this study was to investigate the effect of tiotropium and expression of muscarinic receptors as its related mechanism in an aged mouse model of chronic asthma with airway remodeling. METHODS BALB/c female mice age 6 weeks, 9 and 15 months were sensitized and challenged with ovalbumin (OVA) for three months. Tiotropium bromide was administered during the challenge period. Airway hyperresponsiveness (AHR) and pulmonary inflammation were measured. Parameters of airway remodeling, and expression levels of M₂ and M₃ receptors were examined. RESULTS Total cell with eosinophils, increased in the OVA groups by age, was decreased significantly after treatment with tiotropium bromide, particularly in the age group of 15 months. AHR and levels of interleukin (IL)-4, IL-5, and IL-13 were decreased, after tiotropium administration. In old aged group of 9- and 15-months-treated groups, hydroxyproline contents and levels of α-smooth muscle actin were attenuated. Tiotropium enhanced the expression of M₂ but decreased expression of M₃ in all aged groups of OVA. CONCLUSION Tiotropium bromide had anti-inflammatory and anti-remodeling effects in an aged mouse model of chronic asthma. Its effects seemed to be partly mediated by modulating expression M₃ and M₂ muscarinic receptors. Tiotropium may be a beneficial treatment option for the elderly with airway remodeling of chronic asthma.
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Affiliation(s)
- Ji Young Kang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - In Kyoung Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jung Hur
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Seok Chan Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sook Young Lee
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Soon Seog Kwon
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Young Kyoon Kim
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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Ban WH, Kang HH, Kim IK, Ha JH, Joo H, Lee JM, Lim JU, Lee SH, Rhee CK. Clinical significance of nuclear factor erythroid 2-related factor 2 in patients with chronic obstructive pulmonary disease. Korean J Intern Med 2018; 33. [PMID: 29529843 PMCID: PMC6030408 DOI: 10.3904/kjim.2017.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND/AIMS Several studies have identified a role for nuclear factor erythroid 2-related factor 2 (Nrf2) in the development of chronic obstructive pulmonary disease (COPD). However, the relationship between the plasma Nrf2 level and the extent of systemic inflammation associated with COPD status remains unclear. METHODS Patients diagnosed with COPD were recruited from St. Paul's Hospital, The Catholic University of Korea, between July 2009 and May 2012. Patients were classified into two groups according to the severity of their symptoms on initial presentation, a COPD-stable group (n = 25) and a COPD-exacerbation group (n = 30). Seventeen patients were enrolled as a control group (n = 17). The plasma levels of Nrf2 and other systemic inf lammatory biomarkers, including interleukin 6 (IL-6), surfactant protein D (SP-D), and C-reactive protein (CRP), were measured. We collected clinical data including pulmonary function test results, and analyzed the relationships between the biomarker levels and the clinical parameters. RESULTS Plasma Nrf2 and CRP levels significantly increased in a stepwise manner with an increase in inflammatory status (control vs. COPD-stable vs. COPD-exacerbation) (p = 0.002, p < 0.001). Other biomarkers of systemic inflammation (IL-6, SP-D) exhibited similar tendencies, but significant differences were not apparent. Furthermore, we observed negative correlations between the plasma level of Nrf2 and both the forced expiratory volume in 1 second (FEV1) (r = -0.339, p = 0.015) and the forced expiratory ratio (FEV1/forced vital capacity [FVC]) (r = -0.342, p = 0.014). However, CRP level was not correlated with any measured parameter. CONCLUSIONS Plasma Nrf2 levels gradually increased in line with disease severity and the extent of systemic inflammation in patients with COPD.
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Affiliation(s)
- Woo Ho Ban
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Hyeon Hui Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Jick Hwan Ha
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Hyonsoo Joo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Jong Min Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Jeong Uk Lim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, Seoul, Korea
| | - Chin Kook Rhee
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, Seoul, Korea
- Correspondence to Chin Kook Rhee, M.D. Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Seoul St. Mary’s Hospital, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul 06591, Korea Tel: +82-2-2258-6067 Fax: +82-2-599-3589 E-mail:
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Lee S, Kim IK, Kang HH, Kwon HY, Kang HS, Yeo CD. Abstract 4019: The chronic intermittent hypoxia enhances cancer progression in lung cancer mouse model. Cancer Res 2018. [DOI: 10.1158/1538-7445.am2018-4019] [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
Background: Obstructive sleep apnoea (OSA) is a very prevalent disorder charaterized by chronic intermittent hypoxia (CIH) and some reports suggested that OSA is related to increased incidence of cancer as well as cancer progression. The purpose of this study was to evaluate whether intermittent hypoxia with a time course similar to that found in OSA influence lung cancer development and progression in metastatic lung cancer animal model.
Methods: C57/BL6 mice were divided into two groups; control condition (room air) or CIH. The mice of CIH group were exposed to IH for 2 weeks before and immediately for 2 weeks after tumour induction by tail vein injection of carcinoma cells. At day 14, the mice were sacrificed and measured cancer growth. Hypoxia inducible factor (HIF-1α), vascular endothelial growth factor (VEGF) and metastasis related matrix metalloproteinases (MMP) were measured by ELISA and gelatin zymography in lung tissue and serum, respectively. The mRNA expressions of epithelial mesenchymal transition markers were measured by real-time PCR in lung tissue.
Results: The marked increase in tumor number and volume was found in CIH group (p < 0.05). The accumulation of total cell and neutrophils in BAL fluids and the activation of MMP -2 and -9 in serum were also increased by CIH. The level of HIF-1α in the nuclear fraction of pneumocytes and the expression of VEGF were increased significantly in CIH group compared to the control (p < 0.05). The mRNA expression of E-cadherin was decreased in CIH group compared to the control group while vimentin was increased.
Conclusions: Our data shows that CIH is associated with enhanced proliferative and migratory properties of cancer. These results suggest evidence for the causal link between OSA and lung cancer progression.
Key words: chronic intermittent hypoxia, obstructive sleep apnea, lung cancer
Citation Format: SangHaak Lee, In Kyoung Kim, Hyeon Hui Kang, Hee Young Kwon, Hye Sun Kang, Chang Dong Yeo. The chronic intermittent hypoxia enhances cancer progression in lung cancer mouse model [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2018; 2018 Apr 14-18; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2018;78(13 Suppl):Abstract nr 4019.
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Affiliation(s)
- SangHaak Lee
- 1St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - In Kyoung Kim
- 1St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeon Hui Kang
- 1St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hee Young Kwon
- 1St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hye Sun Kang
- 2Incheon St.Mary's Hospital, College of Medicine, The Catholic University of Korea,, Incheon, Republic of Korea
| | - Chang Dong Yeo
- 3Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeong bu, Republic of Korea
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Lee HY, Kim IK, Lee HI, Lee HY, Kang HS, Yeo CD, Kang HH, Moon HS, Lee SH. Combination of carboplatin and intermittent normobaric hyperoxia synergistically suppresses benzo[a]pyrene-induced lung cancer. Korean J Intern Med 2018; 33:541-551. [PMID: 29237253 PMCID: PMC5943660 DOI: 10.3904/kjim.2016.334] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 04/14/2017] [Accepted: 05/24/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND/AIMS We explored the effects of intermittent normobaric hyperoxia alone or combined with chemotherapy on the growth, general morphology, oxidative stress, and apoptosis of benzo[a]pyrene (B[a]P)-induced lung tumors in mice. METHODS Female A/J mice were given a single dose of B[a]P and randomized into four groups: control, carboplatin (50 mg/kg intraperitoneally), hyperoxia (95% fraction of inspired oxygen), and carboplatin and hyperoxia. Normobaric hyperoxia (95%) was applied for 3 hours each day from weeks 21 to 28. Tumor load was determined as the average total tumor numbers and volumes. Several markers of oxidative stress and apoptosis were evaluated. RESULTS Intermittent normobaric hyperoxia combined with chemotherapy reduced the tumor number by 59% and the load by 72% compared with the control B[a]P group. Intermittent normobaric hyperoxia, either alone or combined with chemotherapy, decreased the levels of superoxide dismutase and glutathione and increased the levels of catalase and 8-hydroxydeoxyguanosine. The Bax/Bcl-2 mRNA ratio, caspase 3 level, and number of transferase-mediated dUTP nick end-labeling positive cells increased following treatment with hyperoxia with or without chemotherapy. CONCLUSIONS Intermittent normobaric hyperoxia was found to be tumoricidal and thus may serve as an adjuvant therapy for lung cancer. Oxidative stress and its effects on DNA are increased following exposure to hyperoxia and even more with chemotherapy, and this may lead to apoptosis of lung tumors.
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Affiliation(s)
- Hea Yon Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hye In Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hwa Young Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hye Seon Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chang Dong Yeo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyun Hui Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hwa Sik Moon
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, The Cancer Research Institute, College of Medicine, The Catholic University of Korea, Seoul, Korea
- Correspondence to Sang Haak Lee, M.D. Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, St. Paul’s Hospital, The Catholic University of Korea, 180 Wangsan-ro, Dongdaemun-gu, Seoul 02559, Korea Tel: +82-2-961-4500 Fax: +82-2-958-2494 E-mail:
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Kang HH, Kim IK, Lee HI, Joo H, Lim JU, Lee J, Lee SH, Moon HS. Chronic intermittent hypoxia induces liver fibrosis in mice with diet-induced obesity via TLR4/MyD88/MAPK/NF-kB signaling pathways. Biochem Biophys Res Commun 2017. [DOI: 10.1016/j.bbrc.2017.06.047] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Lee HY, Hur J, Kim IK, Kang JY, Yoon HK, Lee SY, Kwon SS, Kim YK, Rhee CK. Effect of nintedanib on airway inflammation and remodeling in a murine chronic asthma model. Exp Lung Res 2017; 43:187-196. [PMID: 28696800 DOI: 10.1080/01902148.2017.1339141] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
INTRODUCTION Nintedanib is a multi-tyrosine kinase receptor inhibitor recently approved for treatment of idiopathic pulmonary fibrosis. Although angiogenesis is a key process involved in airway structural changes in patients with bronchial asthma, the effect of nintedanib targeting the angiokinase pathway on airway inflammation and remodeling has not been evaluated. METHODS We used a 3-month ovalbumin (OVA) challenge mouse model of airway remodeling. Nintedanib was orally administrated during the challenge period, and the effects were examined based on the percentage of airway inflammatory cells, airway hyper-reactivity (AHR), peribronchial goblet cell hyperplasia, total lung collagen and smooth muscle area. The expression of growth factor receptors was analyzed in mice lung tissues. RESULTS The OVA challenged group showed a significant increase in airway eosinophilic inflammation, elevated Th2 cytokines, AHR, and airway remodeling compared to those in the control group. The airway remodeling process, as evaluated by goblet cell hyperplasia, total lung collagen level, and airway smooth muscle area, was suppressed by nintedanib compared to that by OVA. Nintedanib effectively suppressed the phosphorylation of vascular endothelial growth factor/ platelet derived growth factor subunit2/fibroblast growth factor3 receptors in the mice lung. CONCLUSIONS Nintedanib effectively ameliorated airway inflammation and remodeling in an OVA-induced chronic asthma model. These results suggest that nintedanib could be a new treatment agent targeting airway remodeling in patients with severe asthma.
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Affiliation(s)
- Hwa Young Lee
- a Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Uijeongbu St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Gyeonggi-do , Republic of Korea
| | - Jung Hur
- b Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Seoul , Republic of Korea
| | - In Kyoung Kim
- b Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Seoul , Republic of Korea
| | - Ji Young Kang
- b Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Seoul , Republic of Korea
| | - Hyoung Kyu Yoon
- c Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Youido St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Seoul , Republic of Korea
| | - Sook Young Lee
- b Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Seoul , Republic of Korea
| | - Soon Suk Kwon
- d Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Gyeonggi-do , Republic of Korea
| | - Young Kyoon Kim
- b Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Seoul , Republic of Korea
| | - Chin Kook Rhee
- b Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine , The Catholic University of Korea , Seoul , Republic of Korea
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Lee HY, Lee HY, Choi JY, Hur J, Kim IK, Kim YK, Kang JY, Lee SY. Inhibition of MicroRNA-21 by an antagomir ameliorates allergic inflammation in a mouse model of asthma. Exp Lung Res 2017; 43:109-119. [PMID: 28379062 DOI: 10.1080/01902148.2017.1304465] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AIM OF THE STUDY MicroRNA-21 (miR-21) is up-regulated during allergic airway inflammation, reflecting a Th2 immune response. We investigated the effects of an miR-21 antagomir and its mechanism of action in a mouse model of acute bronchial asthma. MATERIALS AND METHODS BALB/c mice were sensitized and challenged with ovalbumin (OVA). The anti-miR-21 antagomir was administered by intranasal inhalation from the day of sensitization. Changes in cell counts, Th2 cytokine levels in bronchoalveolar (BAL) fluid, and airway hyper-responsiveness (AHR) were examined. Histopathological changes and expression levels of miR-21 in lung tissues were analyzed. The mechanism of action of the antagomir was investigated by counting CD4+/CD8- T cells in splenocytes and by measuring the expression levels of transcription factors associated with T cell polarization. RESULTS MiR-21 expression was selectively down-regulated in the lung tissues of mice treated with anti-miR-21. The antagomir suppressed AHR compared with that of the OVA-challenged and scrambled RNA-treated groups. It also reduced the total cell and eosinophil counts in BAL fluid and the levels of Th2 cytokines, including IL-4, IL-5, and IL-13. The direct target of miR-21, IL-12p35, was induced in the antagomir-treated group, decreasing the CD4+/CD8- T cell proportions in splenocytes. The levels of transcription factors involved in the Th2-signaling pathway were reduced in lung tissues on treatment with the antagomir. CONCLUSIONS The miR-21 antagomir suppresses the development of allergic airway inflammation in a mouse model of acute bronchial asthma, inhibiting Th2 activation. These results suggest that this antagomir might be useful for treating bronchial asthma.
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Affiliation(s)
- Hwa Young Lee
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
| | - Hea Yon Lee
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
| | - Joon Young Choi
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
| | - Jung Hur
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
| | - In Kyoung Kim
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
| | - Young Kyoon Kim
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
| | - Ji Young Kang
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
| | - Sook Young Lee
- a Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine , The Catholic University of Korea , Seoul , South Korea
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Lee JM, Yeo CD, Lee HY, Rhee CK, Kim IK, Lee DG, Lee SH, Kim JW. Inhibition of neutrophil elastase contributes to attenuation of lipopolysaccharide-induced acute lung injury during neutropenia recovery in mice. J Anesth 2017; 31:397-404. [PMID: 28144780 DOI: 10.1007/s00540-017-2311-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [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: 09/15/2016] [Accepted: 01/17/2017] [Indexed: 01/15/2023]
Abstract
PURPOSE Patients in whom neutropenia recovery is complicated by pneumonia have an increased risk of acute lung injury (ALI) and detrimental outcomes. The aim of the present study was to investigate whether inhibition of neutrophil elastase (NE) is effective in lipopolysaccharide (LPS)-induced ALI during neutropenia recovery in a murine model, and whether it upregulates the activation of the MerTK signaling pathway. METHODS Cyclophosphamide was given to mice to induce neutropenia. Seven days later, they were administered LPS by intratracheal instillation. Sivelestat, a neutrophil elastase inhibitor, was given by intraperitoneal injection once daily starting on day 0 and continuing until mice were sacrificed on day 5 (preventive group). Alternatively, sivelestat was given after, instead of before, LPS administration on day 2 (therapeutic group). RESULTS Sivelestat attenuated the lung edema and histopathological changes associated with LPS-induced lung injury. The accumulation of neutrophils and the concentrations of TNF-α, IL-6, and MPO in bronchoalveolar lavage (BAL) fluids were inhibited effectively by sivelestat. The expression of ICAM-1 and NF-κB p65 was also reduced after sivelestat administration. The protein and gene expression of MerTK tended to increase with sivelestat treatment. CONCLUSIONS Sivelestat significantly attenuated LPS-induced ALI during recovery from neutropenia, and this effect was associated with MerTK induction. These findings suggest that NE inhibition could be a promising means of alleviating lung inflammation without increasing susceptibility to infection in ALI/ARDS during neutropenia recovery.
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Affiliation(s)
- Jong Min Lee
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1 Geumo-dong, Uijeongbu, Seoul, Gyunggi-do, Republic of Korea
| | - Chang Dong Yeo
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1 Geumo-dong, Uijeongbu, Seoul, Gyunggi-do, Republic of Korea
| | - Hwa Young Lee
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1 Geumo-dong, Uijeongbu, Seoul, Gyunggi-do, Republic of Korea
| | - Chin Kook Rhee
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1 Geumo-dong, Uijeongbu, Seoul, Gyunggi-do, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1 Geumo-dong, Uijeongbu, Seoul, Gyunggi-do, Republic of Korea
| | - Dong Gun Lee
- Division of Infectious Diseases, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang Haak Lee
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1 Geumo-dong, Uijeongbu, Seoul, Gyunggi-do, Republic of Korea
| | - Jin Woo Kim
- Division of Pulmonology and Critical Care Medicine, Department of Internal Medicine, School of Medicine, The Catholic University of Korea, Uijeongbu St. Mary's Hospital, 65-1 Geumo-dong, Uijeongbu, Seoul, Gyunggi-do, Republic of Korea.
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Lee HY, Kim IK, Yoon HK, Kwon SS, Rhee CK, Lee SY. Inhibitory Effects of Resveratrol on Airway Remodeling by Transforming Growth Factor-β/Smad Signaling Pathway in Chronic Asthma Model. Allergy Asthma Immunol Res 2017; 9:25-34. [PMID: 27826959 PMCID: PMC5102832 DOI: 10.4168/aair.2017.9.1.25] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2016] [Revised: 05/25/2016] [Accepted: 06/08/2016] [Indexed: 12/13/2022]
Abstract
Purpose Asthma is a chronic airway disease characterized by airway remodeling, leading to a progressive decline in lung function. Therapeutic agents that attenuate airway remodeling can complement the limited effects of traditional glucocorticoids. In this study, we investigated the effect of resveratrol on allergic airway inflammation and remodeling in a murine model of chronic bronchial asthma. Methods Peribronchial smooth muscle thickening that developed in mice challenged with a 3-month repeated exposure to ovalbumin (OVA) was used to study airway remodeling. Oral resveratrol was administered daily during the OVA challenge. The expression of TGF-β1/Smad signaling proteins and downstream mesenchymal markers in the presence or absence of resveratrol was examined in bronchial epithelial cells. Results OVA sensitization and chronic challenge increased airway hyperresponsiveness, inflammation, goblet cell hyperplasia, α-smooth muscle actin (SMA), and collagen deposition. Resveratrol effectively suppressed OVA-induced airway inflammation and remodeling. The expression of TGF-β1/phosphorylated Smad2/3 was increased in the lung tissues of OVA-challenged mice but effectively inhibited by resveratrol. In bronchial epithelial cells, the TGF-β1-induced expression of the mesenchymal markers snail, slug, vimentin, and α-SMA was suppressed by resveratrol treatment. Conclusions Resveratrol effectively ameliorated both airway inflammation and airway structural changes in a mouse model of bronchial asthma. These effects were mediated by decreased TGF-β1 expression, in turn suppressing TGF-β1/Smad signaling and the epithelial-mesenchymal transition process. Our results demonstrate the potential benefits of resveratrol for the treatment of airway remodeling associated with bronchial asthma.
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Affiliation(s)
- Hwa Young Lee
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - In Kyoung Kim
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyoung Kyu Yoon
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Soon Suk Kwon
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chin Kook Rhee
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea.
| | - Sook Young Lee
- Division of Allergy, Pulmonary and Critical Care Medicine, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea.
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Joo H, Mo JY, Kim IK, Kang HH, Lee SH. P3.01-041 Anti-Cancer Effect of Hyperoxia on Human Lung Cancer Cells through Oxidative Stress Mediated ERK Signaling. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2016.11.1607] [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: 11/27/2022]
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Kim IK, Choi SH, Son S, Ju MK. Early Weight Gain After Transplantation Can Cause Adverse Effect on Transplant Kidney Function. Transplant Proc 2016; 48:893-6. [PMID: 27234761 DOI: 10.1016/j.transproceed.2015.10.064] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Revised: 09/17/2015] [Accepted: 10/03/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND The outcomes of kidney transplant recipients with increased body mass index (BMI) remain controversial. We studied the relationship between changes in BMI and kidney transplant function, especially during the first year after transplantation. METHODS We performed an observational cohort study of all kidney transplant recipients at our center from March 2009 to June 2014 to determine whether changes in BMI were associated with kidney transplant function, as measured by estimated glomerular filtration rate (eGFR). Recipient BMI and eGFR were calculated pre-transplant and at 1, 3, 6, 9, and 12 postoperative months (POM) after transplantation. The correlation between changes in BMI and eGFR was then evaluated. RESULTS Eighty-one patients were studied. There was a strong negative correlation between changes in BMI and eGFR from pre-transplant to POM 1 (correlation coefficient, -0.406; P < .0001) and from POM 1 to POM 3 (r = -0.324, P = .004). CONCLUSIONS We found that increased BMI caused a significant decline in renal function as measured by eGFR, especially in the initial 3 months after kidney transplantation.
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Affiliation(s)
- I K Kim
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - S H Choi
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - S Son
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - M K Ju
- Department of Surgery, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
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Lee HY, Kim IK, Lee HI, Mo JY, Yeo CD, Kang HH, Moon HS, Lee SH. The apoptotic effect of simvastatin via the upregulation of BIM in nonsmall cell lung cancer cells. Exp Lung Res 2016; 42:14-23. [DOI: 10.3109/01902148.2015.1125970] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Papakostas TD, Lim L, van Zyl T, Miller JB, Modjtahedi BS, Andreoli CM, Wu D, Young LH, Kim IK, Vavvas DG, Esmaili DD, Husain D, Eliott D, Kim LA. Intravitreal aflibercept for macular oedema secondary to central retinal vein occlusion in patients with prior treatment with bevacizumab or ranibizumab. Eye (Lond) 2015; 30:79-84. [PMID: 26449196 DOI: 10.1038/eye.2015.175] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 07/12/2015] [Indexed: 11/09/2022] Open
Abstract
PurposeTo report the visual and anatomic outcomes in eyes with macular oedema (MO) secondary to central retinal vein occlusion (CRVO) that were switched from either intravitreal bevacizumab or ranibizumab to intravitreal aflibercept.MethodsTwo-center retrospective chart review. Eyes with MO secondary to CRVO that received a minimum of three intravitreal injections of bevacizumab or ranibizumab and were switched to intravitreal aflibercept for persistent or recurrent MO not responding to either bevacizumab and/or ranibizumab.ResultsIn all 42 eyes of 42 patients were included in the study. The median visual acuity before the switch was 20/126, 1 month after the first injection of aflibercept 20/89 (P=0.0191), and at the end of the follow-up 20/100 (P=0.2724). The median CRT before the switch was 536 μm, 1 month after the first injection of aflibercept 293.5 μm (P=0.0038), and at the end of the follow-up 279 μm (P=0.0013 compared to before the switch). The median number of weeks between injections before the switch was 5.6 and after the switch was 7.6 (P<0.0001).ConclusionConverting eyes with refractory MO due to CRVO to aflibercept can result in stabilization of the vision, improved macular anatomy, and extension of the injection interval.
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Affiliation(s)
- T D Papakostas
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - L Lim
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - T van Zyl
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - J B Miller
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - B S Modjtahedi
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - C M Andreoli
- Harvard Vanguard Medical Associates, Boston, MA, USA
| | - D Wu
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - L H Young
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - I K Kim
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - D G Vavvas
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - D D Esmaili
- Retina-Vitreous Associates Medical Group, Los Angeles, CA, USA
| | - D Husain
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - D Eliott
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
| | - L A Kim
- Retina Service, Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA, USA
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Kang JH, Kang HS, Kim IK, Lee HY, Ha JH, Yeo CD, Kang HH, Moon HS, Lee SH. Curcumin sensitizes human lung cancer cells to apoptosis and metastasis synergistically combined with carboplatin. Exp Biol Med (Maywood) 2015; 240:1416-25. [PMID: 25716014 DOI: 10.1177/1535370215571881] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 12/22/2014] [Indexed: 12/20/2022] Open
Abstract
Although carboplatin is one of the standard chemotherapeutic agents for non-small cell lung cancer (NSCLC), it has limited therapeutic efficacy due to activation of a survival signaling pathway and the induction of multidrug resistance. Curcumin, a natural compound isolated from the plant Curcuma longa, is known to sensitize tumors to different chemotherapeutic agents. The aim of this study is to evaluate whether curcumin can chemosensitize lung cancer cells to carboplatin and to analyze the signaling pathway underlying this synergism. We investigated the synergistic effect of both agents on cell proliferation, apoptosis, invasion, migration, and expression of related signaling proteins using the human NSCLC cell line, A549. A549 cell was treated with different concentrations of curcumin and carboplatin alone and in combination. Combined treatment with curcumin and carboplatin inhibited tumor cell growth, migration, and invasion compared with either drug alone. Matrix metalloproteinase (MMP)-2 and MMP-9 were more efficiently downregulated by co-treatment than by each treatment alone. mRNA and protein expression of caspase-3 and caspase-9 and proapoptotic genes was increased in cells treated with a combination of curcumin and carboplatin, whereas expression of the antiapoptotic Bcl-2 gene was suppressed. Co-treatment of both agents substantially suppressed NF-κB activation and increased expression of p53. Phosphorylation of Akt, a protein upstream of NF-κB, was reduced, resulting in inhibition of the degradation of inhibitor of κB(IκBα), whereas the activity of extracellular signal-regulated kinase (ERK1/2) was enhanced. Our study demonstrated that the synergistic antitumor activity of curcumin combined with carboplatin is mediated by multiple mechanisms involving suppression of NF-κB via inhibition of the Akt/IKKα pathway and enhanced ERK1/2 activity. Based on this mechanism, curcumin has potential as a chemosensitizer for carboplatin in the treatment of patients with NSCLC.
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Affiliation(s)
- Ji Ho Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Hye Seon Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - In Kyoung Kim
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Hwa Young Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Jick Hwan Ha
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Chang Dong Yeo
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Hyun Hui Kang
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Hwa Sik Moon
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
| | - Sang Haak Lee
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul 137-701, Republic of Korea
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Yeo CD, Kim JW, Ha JH, Kim SJ, Lee SH, Kim IK, Kim YK. Chemopreventive effect of phosphodieasterase-4 inhibition in benzo(a)pyrene-induced murine lung cancer model. Exp Lung Res 2014; 40:500-6. [DOI: 10.3109/01902148.2014.950769] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Abstract
BACKGROUND The disease burden of influenza-like illnesses (ILIs) on the working population has been documented in the literature, but statistical evidence of ILI-related work absenteeism in the USA is limited due to data availability. AIMS To assess work absenteeism due to ILIs among privately insured employees in the USA in 2007-8 and 2008-9. METHODS We used the 2007-9 MarketScan® research databases. Full-time employees aged 18-64 years, with the ability to incur work absence and continuously enrolled in the same insurance plan during each season were included. We identified ILI episodes using ICD-9 codes for influenza and pneumonia (480-487). For each season, we calculated the mean work-loss hours per ILI episode and the proportion of employees who had at least one ILI episode. Work-loss hours and ILI rates were examined by subgroups. RESULTS The mean number of work hours lost per ILI episode was 23.6 in 2007-8 and 23.9 in 2008-9. The proportion of employees with at least one ILI was 1.7% in 2007-8 and 1.2% in 2008-9. In both seasons, the proportion with ILI was higher among older (2.1 and 1.5%) and hourly workers (2.0 and 1.3%), workers in the southern region (1.9 and 1.3%) and those in oil, gas or mining industries (1.9 and 1.4%). CONCLUSIONS Our results indicate that the disease burden associated with ILIs in the working population is not trivial and deserves attention from policymakers and health care professionals to design effective strategies to reduce this burden.
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Affiliation(s)
- Y Tsai
- Carter Consulting, National Center for Immunization and Respiratory Diseases (NCIRD), Centers for Disease Control and Prevention (CDC), 1600 Clifton Road NE, MS A19, Atlanta, GA 30329, USA,
| | - F Zhou
- National Center for Immunization and Respiratory Diseases (NCIRD), Centers for Disease Control and Prevention (CDC), Atlanta, GA 30329, USA
| | - I K Kim
- Battelle Memorial Institute, National Center for Immunization and Respiratory Diseases (NCIRD), Centers for Disease Control and Prevention (CDC), Atlanta, GA 30329, USA
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Abstract
Oxidative stress, defined as an excess production of reactive oxygen species (ROS), is shown to play an important role in the pathophysiology of cardiac remodeling including cell death and contractile dysfunction. Therefore, the balance between ROS production and removal of excess ROS is essential in maintaining the redox state and homeostasis balance in the cell. The increased ROS further activates nuclear factor-κB (NF-κB), a redox-sensitive transcription factor and promotes cell death. Recently, microRNAs (miRNAs) have been identified as critical regulators of various pathophysiological processes of cardiac remodeling; however, NF-κB-mediated miRNA's role in cardiomyocytes under oxidative stress remains undetermined. The miR-21 has been implicated in diverse cardiac remodeling; but, NF-κB-mediated miR-21 modulation in oxidative stress is currently unknown. Neonatal cardiomyocytes were transfected with IκBα mutant, miR-21 mimetic, and inhibitors separately, and were challenged with H2O2. The target gene, programmed cell death 4 (PDCD4), ROS activity, and NF-κB translocation were analyzed. Our results indicated that NF-κB positively regulated miR-21 expression under oxidative stress, and PDCD4 was a direct target for miR-21. NF-κB further regulated the expression of PDCD4 in H2O2-induced oxidative stress. Moreover, H2O2-induced ROS activity and cardiomyocytes apoptosis were partly protected by overexpression of miR-21 and displayed an important role in ROS-mediated cardiomyocytes injury. We evaluated a critical role of NF-κB-mediated miR-21 modulation in H2O2-induced oxidative stress in cardiomyocytes by targeting PDCD4. Our data may provide a new insight of miR-21's role in cardiac diseases primarily mediated by ROS.
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Affiliation(s)
- C Wei
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A & M Health Science Center, Scott & White, Central Texas Veterans Health Care System , Temple, TX , USA
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Abstract
Oxidative stress triggered by amyloid beta (Aβ) accumulation contributes substantially to the pathogenesis of Alzheimer's disease (AD). In the present study, we examined the involvement of the antioxidant activity of peroxiredoxin 6 (Prdx 6) in protecting against Aβ25-35-induced neurotoxicity in rat PC12 cells. Treatment of PC12 cells with Aβ25-35 resulted in a dose- and time-dependent cytotoxicity that was associated with increased accumulation of intracellular reactive oxygen species (ROS) and mitochondria-mediated apoptotic cell death, including activation of Caspase 3 and 9, inactivation of poly ADP-ribosyl polymerse (PARP), and dysregulation of Bcl-2 and Bax. This apoptotic signaling machinery was markedly attenuated in PC12 cells that overexpress wild-type Prdx 6, but not in cells that overexpress the C47S catalytic mutant of Prdx 6. This indicates that the peroxidase activity of Prdx 6 protects PC12 cells from Aβ25-35-induced neurotoxicity. The neuroprotective role of the antioxidant Prdx 6 suggests its therapeutic and/or prophylactic potential to slow the progression of AD and limit the extent of neuronal cell death caused by AD.
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Affiliation(s)
- I K Kim
- Asan Institute for Life Sciences, University of Ulsan College of Medicine, Asan Medical Center , Seoul , Republic of Korea
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Kim IK, Rhee CK, Yeo CD, Kang HH, Lee DG, Lee SH, Kim JW. Effect of tyrosine kinase inhibitors, imatinib and nilotinib, in murine lipopolysaccharide-induced acute lung injury during neutropenia recovery. Crit Care 2013; 17:R114. [PMID: 23787115 PMCID: PMC4056323 DOI: 10.1186/cc12786] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Accepted: 06/20/2013] [Indexed: 11/28/2022]
Abstract
Introduction Neutrophil recovery has been implicated in deterioration of oxygenation and exacerbation of preexisting acute lung injury (ALI). The aim of this study was to investigate whether imatinib or nilotinib was effective on lipopolysaccharide (LPS)-induced ALI during neutropenia recovery in mice. Methods Mice were rendered neutropenic with cyclophosphamide prior to the intratracheal instillation of LPS. Imatinib or nilotinib was administrated by oral gavage during neutropenia recovery. In order to study the effects of drugs, mice were killed on day 5 and blood, bronchoalveolar lavage (BAL) fluid and lung tissue samples were obtained. The lung wet/dry weight ratio and protein levels in the BAL fluid or lung tissue were determined. Results Treatment with imatinib or nilotinib significantly attenuated the LPS-induced pulmonary edema, and this result was supported by the histopathological examination. The concentrations of tumor necrosis factor-α, interleukin (IL)-1β, IL-6 and myeloperoxidase in BAL fluid were significantly inhibited by imatinib or nilotinib in mice of ALI during neutropenia recovery. The mRNA expressions of platelet-derived growth factor receptor-β and c-KIT in imatinib or nilotinib group were significantly lower than LPS group. Conclusions Our data indicated that imatinib or nilotinib effectively attenuated LPS-induced ALI during neutropenia recovery. These results provide evidence for the therapeutic potential of imatinib and nilotinib in ALI during neutropenia recovery.
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Kim IK, Park KJ, Kang GH, Im JP, Kim SG, Jung HC, Song IS, Kim JS. Risk factors for complications after total colectomy in ulcerative colitis. Turk J Gastroenterol 2013; 23:515-22. [PMID: 23161324 DOI: 10.4318/tjg.2012.0425] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND/AIMS Ulcerative colitis can be cured by total proctocolectomy. The aim of this study was to investigate the risk factors for colectomy-related complications in ulcerative colitis patients. MATERIALS AND METHODS All patients with ulcerative colitis who underwent total colectomy at Seoul National University Hospital from 1990 to 2009 were identified through a surgical database. Their demographic and clinical characteristics were reviewed retrospectively. They were followed for a mean of 6.2 years, and risk factors affecting the development of complications were analyzed. RESULTS A total of 85 ulcerative colitis patients (M:F = 35:50) were enrolled and analyzed. Eighty (94.1%) patients received total proctocolectomy with ileal pouch-anal anastomosis. Thirty-nine (45.9%) patients had readmitted (95 hospitalizations) and 23 (27.1%) underwent further surgical procedures (44 operations) due to complications. Multivariate analysis showed that female gender (odds ratio [OR], 2.99; p=0.046), delayed surgery (OR, 3.45; p=0.03), and postoperative pathological diagnosis of dysplasia/cancer (OR, 4.22; p=0.03) were the risk factors for complication-related rehospitalization. Pouchitis (OR, 6.31; p=0.007) and frequent previous ulcerative colitis flare-up (OR, 1.39; p=0.023) were the risk factors for complication-related reoperation. CONCLUSIONS Female gender, delayed surgery, pathological diagnosis of dysplasia/cancer, pouchitis, and frequent previous flare-up are the risk factors for postoperative complications.
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Affiliation(s)
- In Kyoung Kim
- Seoul National University College of Medicine, Department of Internal Medicine, Seoul, Republic of Korea.
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Lee SH, Kim IK, Lee HI, Lee HY, Ban WH, Kim SW, Kang HH, Moon HS. The role of reactive oxygen species in the apoptotic effects of curcumin and simvastatin on lung cancer cell line. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.1105.20] [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: 11/11/2022]
Affiliation(s)
- Sang Haak Lee
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
| | - In Kyoung Kim
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
| | - Hye In Lee
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
| | - Hwa Young Lee
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
| | - Woo Ho Ban
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
| | - Sei Won Kim
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
| | - Hyeon Hui Kang
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
| | - Hwa Sik Moon
- Internal MedicineSt. Paul¡s HospitalThe Catholic UniversitySeoulRepublic of Korea
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Lee HY, Kim IK, Lee HI, Lee CK, Yeo CD, Lee DG, Lee SH, Kim JW. Tyrosine kinase inhibitors attenuated lipopolysaccharide‐induced acute lung injury during neutropenia recovery in mice. FASEB J 2013. [DOI: 10.1096/fasebj.27.1_supplement.lb563] [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: 11/11/2022]
Affiliation(s)
- Hwa Young Lee
- Internal medicineSt paul's hospital.SeoulRepublic of Korea
| | - In Kyoung Kim
- Internal medicineSt paul's hospital.SeoulRepublic of Korea
| | - Hye In Lee
- Internal medicineSt paul's hospital.SeoulRepublic of Korea
| | - Chin Kook Lee
- Internal medicineSt Mary's hostpitalSeoulRepublic of Korea
| | - Chang Dong Yeo
- Internal medicineUijeongbu St. Mary¡s HospitalUijeongbu‐siRepublic of Korea
| | - Dong Gun Lee
- Internal medicineSt Mary's hostpitalSeoulRepublic of Korea
| | - Sang Haak Lee
- Internal medicineSt paul's hospital.SeoulRepublic of Korea
| | - Jin Woo Kim
- Internal medicineUijeongbu St. Mary¡s HospitalUijeongbu‐siRepublic of Korea
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Yeo CD, Rhee CK, Kim IK, Kang HH, Lee SH, Lee SY, Kwon SS, Kim YK, Kim KH, Kim JW. Protective effect of pravastatin on lipopolysaccharide-induced acute lung injury during neutropenia recovery in mice. Exp Lung Res 2013; 39:99-106. [DOI: 10.3109/01902148.2013.763388] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Lee HY, Kim IK, Lee HI, Kang HS, Park CK, Ha JH, Kim SJ, Lee SH. Abstract A48: Mevalonate pathway inhibitors as chemopreventive agents on lung cancer cell lines: p53 might be a potent regulator. Cancer Prev Res (Phila) 2012. [DOI: 10.1158/1940-6207.prev-12-a48] [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
Objectives: The mevalonate pathway has a crucial role in maintaining cellular homeostasis by cholesterol synthesis and protein prenylation. The mevalonate pathway inhibitors, statins and bisphosphonates have long been tested as anticancer agents, but because of the tumor-selective mechanisms, effects of the drugs on lung cancer cells are not clear. P53, a central regulator of stress responses, can induce cell cycle arrest, cell death or senescence depending on the level of cellular stresses. The current study investigated the effects of simvastatin and zolendronic acid on non-small-cell lung cancer (NSCLC) cells and whether the anti-tumor effects are related to p53 mutation status.
Material and Methods: We treated 3 NSCLC cells, A549 (p53 wild type), H522 (mutant) and H358 (null), with simvastatin and zolendronic acid to investigate cellular proliferation, cell cycle activity, intracellular reactive oxygen species (ROS) and expression of p53 target genes.
Results: In light microscopy, simvastatin (1 uM) caused morphologic changes in all 3 NSCLC cells. The cytotoxicity assay revealed that the synergistic impact with simvastatin (1 uM) and zolendronic acid (50 uM) existed on 72 hour cell survival, which was shown only in p53-wt cells. Expression of cyclin D1, which is important regulator of G1 to S phase progression, was decreased in p53-null and mutant cells but increased in p53-wt cells. Intracellular ROS levels after 24 hour treatment with blends of simvastatin and zolendronic acid was increased more than 2-fold in p53-wt cells, not in p53-null or mutant cells. Regulation of oxidative stress by p53 was shown with the increased expression of p53 target genes, cytochrome c oxidase 2 and TP53-induced glycolysis and apoptosis regulator quantified by real-time polymerase chain reaction.
Conclusions: Our data indicate that taken together, combination of simvastatin and zolendronic acid may have synergistic anti-proliferative effects in lung cancer cells which have functional p53, and those are mediated by increased cellular oxidative stress leading to apoptosis rather than cell cycle arrest. Targeting mevalonate pathway has the potential for lung cancer prevention, by inducing cellular metabolic stress responses mediated by p53.
Citation Format: Hwa Young Lee, In Kyoung Kim, Hye In Lee, Hye Sun Kang, Chan Kwon Park, Jick Hwan Ha, Seung Joon Kim, Sang Haak Lee. Mevalonate pathway inhibitors as chemopreventive agents on lung cancer cell lines: p53 might be a potent regulator. [abstract]. In: Proceedings of the Eleventh Annual AACR International Conference on Frontiers in Cancer Prevention Research; 2012 Oct 16-19; Anaheim, CA. Philadelphia (PA): AACR; Cancer Prev Res 2012;5(11 Suppl):Abstract nr A48.
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Affiliation(s)
- Hwa Young Lee
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
| | - In Kyoung Kim
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
| | - Hye In Lee
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
| | - Hye Sun Kang
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
| | - Chan Kwon Park
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
| | - Jick Hwan Ha
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
| | - Seung Joon Kim
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
| | - Sang Haak Lee
- 1Department of Internal Medicine, St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 2Department of Internal Medicine, Yeouido St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.), 3Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea (Rep.)
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Park JE, Choi HJ, Kim IK, Lee HJ, Kang JH, Song J. Influence of serum leptin levels on future overweight risk in Korean children. Nutr Metab Cardiovasc Dis 2012; 22:260-268. [PMID: 21193296 DOI: 10.1016/j.numecd.2010.08.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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] [Received: 02/11/2010] [Revised: 08/27/2010] [Accepted: 08/29/2010] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND AIMS Leptin is an important regulator of energy metabolism. It is considered to be positively related to body adiposity and metabolic disorders in obese adults and children. The purpose of this study was to evaluate the relationship between baseline circulating leptin, insulin and adiponectin levels and future overweight and metabolic risks in a paediatric population-based cohort. METHODS AND RESULTS First-grade students, who entered elementary school at age 7 years in Gwacheon, a Korean city, were enrolled in this cohort study, and followed from 1st grade to 5th grade. Annual physical examinations from 2005 to 2009 were performed. In 2006, the levels of serum glucose, insulin, leptin and adiponectin and lipid profiles were examined. In 2008, the above parameters, except for adiponectin, were measured again in 381 children (202 boys and 179 girls) who participated. In 2006, 10.2% of the children were overweight (body mass index (BMI) ≥ 85th percentile), and after 2 years, an additional 3% became overweight. Compared with insulin and adiponectin, leptin was most highly associated with current and future BMI, and percent body fat. Boys in the highest tertile for initial leptin (T3) showed the highest prevalence of overweight and metabolic risk scores among three leptin tertile groups. Girls showed the same trends as boys. High initial leptin levels could be predictive of greater future BMI and metabolic risk score (p < 0.001). CONCLUSION These results suggest that elevated serum leptin concentrations among the childhood population could be a marker for future BMI and metabolic disorders.
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Affiliation(s)
- J E Park
- Division of Metabolic Diseases, Center for Biomedical Sciences, National Institute of Health, 194 Tongillo, Eunpyeong-gu, Seoul 122-701, Republic of Korea
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Kim IK, Lee HJ, Kang JH, Song J. Relationship of serum retinol-binding protein 4 with weight status and lipid profile among Korean children and adults. Eur J Clin Nutr 2010; 65:226-33. [DOI: 10.1038/ejcn.2010.251] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lee HJ, Kim IK, Kang JH, Ahn Y, Han BG, Lee JY, Song J. Effects of common FTO gene variants associated with BMI on dietary intake and physical activity in Koreans. Clin Chim Acta 2010; 411:1716-22. [PMID: 20650268 DOI: 10.1016/j.cca.2010.07.010] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [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: 05/14/2010] [Revised: 07/13/2010] [Accepted: 07/13/2010] [Indexed: 11/17/2022]
Abstract
BACKGROUND Associations with FTO (fat mass and obesity associated) gene variants and BMI have been reported in western adult populations. To widen the ethnic and age coverage of the FTO studies, we investigated the effects of FTO gene variants on being overweight and related phenotypes in Korean children and adult with a consideration of lifestyle factors. METHODS We genotyped 711 children for 2 FTO SNPs (rs9939973 and rs9939609), analyzed lifestyle factors, and investigated the potential involvement of FTO variants in being overweight comparing with 8842 adults in the KSNP database. RESULTS With a strong association between FTO gene variants and BMI levels, we further identified an association between rs9939973 or rs9939609 and being overweight both children (P=0.025, OR=1.47, 95% CI=1.05-2.06; P=0.023, OR=1.53, 95% CI=1.06-2.22) and adults (P=0.018, OR=1.10, 95% CI=1.02-1.19; P=0.001, OR=1.16, 95% CI=1.06-1.27). Significant association was observed between rs9939609 and dietary fat intake in children (P=0.008) but not in adults. In low physical activity subgroup of children, rs9939609 A allele carriers had a higher BMI than TT carriers (P=0.0147). A significant interaction effect of rs9939609 on BMI across 3 levels of adult physical activity was found. CONCLUSIONS FTO variant rs9939609 is an overweight susceptibility gene in Koreans. By low physical activity, A allele greatly influenced greater BMI.
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Affiliation(s)
- Hye-Ja Lee
- Division of Metabolic Disease, Center for Biomedical Sciences, National Institute of Health, 194 Tongillo, Eunpyung-gu, Seoul 122-701, Republic of Korea
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Pawar SM, Gurav KV, Shin SW, Choi DS, Kim IK, Lokhande CD, Rhee JI, Kim JH. Effect of bath temperature on the properties of nanocrystalline ZnO thin films. J Nanosci Nanotechnol 2010; 10:3412-3415. [PMID: 20358968 DOI: 10.1166/jnn.2010.2306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The nanocrystalline zinc oxide (ZnO) thin films have been prepared by chemical bath deposition (CBD) method from aqueous zinc nitrate solution at room temperature (25 degrees C) and at higher temperature (75 degrees C). The changes in structural, morphological and optical properties were studied by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), and optical absorption. The structural studies revealed that the film deposited at room temperature showed mixed phases of ZnO and Zn(OH)2 with wurtzite and orthorhombic crystal structure whereas at higher temperature, the deposited film is ZnO with wurtzite crystal structure. After air annealing at 400 degrees C, all the films converted into pure ZnO with wurtzite crystal structure. The films deposited at room temperature showed fibrous surface morphology with interconnected flakes while films deposited at higher temperature shows well-developed nano-rod morphology. Optical study shows that band gap energy (E(g)) of as-deposited thin films deposited at room temperature and at higher temperature are 3.81 and 3.4 eV, decreases up to 3.20 eV, after annealing treatment.
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Affiliation(s)
- S M Pawar
- Photonic and Electronic Thin Film Laboratory, Department of Materials Science and Engineering, Chonnam National University, Gwangju 500-757, South Korea
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Affiliation(s)
- In Kyoung Kim
- Departmemt of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Joo Sung Kim
- Departmemt of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - In Sung Song
- Departmemt of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea
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