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Yoon D, Kim JH, Jeong HE, Ko HY, Kim SR, Shin JY. Risk of anaphylaxis after COVID-19 vaccination in South Korea: A nationwide self-controlled case series analysis. Allergy 2024; 79:754-757. [PMID: 38084802 DOI: 10.1111/all.15975] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/14/2023] [Accepted: 11/28/2023] [Indexed: 03/01/2024]
Affiliation(s)
- Dongwon Yoon
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
- Department of Biohealth Regulatory Science, Sungkyunkwan University, Suwon, South Korea
| | - Ju Hwan Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
- Department of Biohealth Regulatory Science, Sungkyunkwan University, Suwon, South Korea
| | - Han Eol Jeong
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
- Department of Biohealth Regulatory Science, Sungkyunkwan University, Suwon, South Korea
| | - Hwa Yeon Ko
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Sung-Ryeol Kim
- Division of Pulmonology, Allergy and Critical Care Medicine, Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, South Korea
| | - Ju-Young Shin
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
- Department of Biohealth Regulatory Science, Sungkyunkwan University, Suwon, South Korea
- Department of Clinical Research Design & Evaluation, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, South Korea
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Lee HW, Lee JK, Hwang YI, Seo H, Ahn JH, Kim SR, Kim HJ, Jung KS, Yoo KH, Kim DK. Spirometric Interpretation and Clinical Relevance According to Different Reference Equations. J Korean Med Sci 2024; 39:e20. [PMID: 38288534 PMCID: PMC10825457 DOI: 10.3346/jkms.2024.39.e20] [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: 08/10/2023] [Accepted: 11/21/2023] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND Global Lung Function Initiative (GLI)-2012 reference equation is currently suggested for interpretation of spirometry results and a new local reference equation has been developed in South Korea. However, lung function profiles according to the different reference equations and their clinical relevance have not been identified in chronic obstructive pulmonary disease (COPD) patients. METHODS Our cross-sectional study evaluated Choi's, Korean National Health and National Examination Survey (KNHANES)-VI, and GLI-2012 reference equations. We estimated the percentages of predictive forced expiratory volume in one second (FEV1) and airflow limitation severity according to reference equations and analyzed their associations with patient reported outcomes (PROs): COPD assessment test (CAT) score, St. George's Respiratory Questionnaire for COPD patients (SGRQ-C) score, and six minute walk distance (6MWD). RESULTS In the eligible 2,180 COPD patients, lower predicted values of FEV1 and forced vital capacity (FVC) were found in GLI-2012 compared to Choi's and KNHANES-VI equations. GLI-2012 equation resulted in a lower proportion of patients being classified as FEV1 < 80% or FVC < 80% compared to the other equations. However, the Z-scores of FEV1 and FVC were similar between the KNHANES-VI and GLI-2012 equations. Three reference equations exhibited significant associations between FEV1 (%) and patient-reported outcomes (CAT score, SGRQ-C score, and 6MWD). CONCLUSION GLI-2012 reference equation may not accurately reflect FEV1 (%) in the Korean population, but the Z-score using GLI-2012 equation can be a viable option for assessing FEV1 and airflow limitation in COPD patients. Similar to the other two equations, the GLI-2012 equation demonstrated significant associations with PROs.
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Affiliation(s)
- Hyun Woo Lee
- Division of Respiratory and Critical Care, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Jung-Kyu Lee
- Division of Respiratory and Critical Care, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea
| | - Yong-Il Hwang
- Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea
| | - Hyewon Seo
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - June Hong Ahn
- Department of Internal Medicine, Yeungnam University Medical Center, College of Medicine, Yeungnam University, Daegu, Korea
| | - Sung-Ryeol Kim
- Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - Hyun Jung Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Keimyung University Dongsan Hospital, Daegu, Korea
| | - Ki-Suck Jung
- Division of Pulmonary, Allergy and Critical Care Medicine, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, Anyang, Korea
| | - Kwang Ha Yoo
- Department of Internal Medicine, Konkuk University School of Medicine, Seoul, Korea
| | - Deog Kyeom Kim
- Division of Respiratory and Critical Care, Department of Internal Medicine, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul National University College of Medicine, Seoul, Korea.
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Lee JH, Yoo Y, Kim SR, Lee JH, Kim SY, An J, Park SY, Park HK, Kim S, Song WJ, Yang MS, Kwon HS, Park HK, Lee J, Hur GY, Ko GJ, Kim SH, Kim SH, Ye YM, Koh YI, Lee BJ, Cho YS, Yong HS, Kim TB. Skin Test-Guided Strategy to Select Alternative Iodinated Contrast Media in Patients With Immediate Hypersensitivity Reaction: A Prospective Confirmative Study. J Allergy Clin Immunol Pract 2023; 11:3454-3462.e1. [PMID: 37543085 DOI: 10.1016/j.jaip.2023.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 05/30/2023] [Accepted: 07/05/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND Iodinated contrast media (ICM) are a common cause of drug-induced immediate hypersensitivity reaction (IHR). Repeated use of ICM is often necessary; therefore, a standardized protocol to prevent recurrence of IHR is required. OBJECTIVE We aimed to propose an intradermal skin test (IDT)-guided strategy for previous reactors to prevent recurrence of IHR. METHODS We conducted a prospective multicenter study from May 2018 to December 2020 and recruited patients who had experienced IHR to ICM. Once enrolled, the participants underwent IDT with a causative ICM. The alternatives for reexposure were selected using the following protocol: (1) if the IDT with the culprit ICM was positive, further skin tests with other available ICM were conducted to choose IDT-negative agents as alternatives, and (2) if the IDT with the culprit ICM was negative, a randomly changed ICM was used without additional skin tests. The recurrence and severity of hypersensitivity were assessed in subsequent computed tomography examinations. Premedication was administered according to the severity of the index event in all cases. RESULTS A total of 496 participants were enrolled, and 299 were reexposed to ICM. Among 269 participants who followed the protocol, 228 (84.8%) completed computed tomography examinations without adverse reactions, and IHR recurred in 16 of 30 participants (53.3%) who did not follow the protocol (P < .001). In addition, application of the protocol reduced the severity of IHR in recurred cases (P = 0.003). CONCLUSIONS Our IDT-guided strategy not only reduced recurrence of IHR to ICM but also mitigated the severity in recurred cases. This provides evidence for recommending an IDT to diagnose ICM allergy and find safe alternatives.
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Affiliation(s)
- Ji-Hyang Lee
- Department of Allergy and Clinical Immunology, Asian Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Youngsang Yoo
- Department of Allergy and Clinical Immunology, Asian Medical Center, University of Ulsan College of Medicine, Seoul, Korea; Division of Pulmonary and Allergy and Critical Care Medicine, Department of Internal Medicine, Gangneung Asan Hospital, Gangneung, Korea
| | - Sung-Ryeol Kim
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Hyun Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Seo-Young Kim
- Department of Allergy and Clinical Immunology, Asian Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Jin An
- Department of Pulmonary, Allergy and Critical Care Medicine, Kyung Hee University Hospital at Gangdong, University of Kyung Hee College of Medicine, Seoul, Korea
| | - So-Young Park
- Division of Pulmonology, Allergy and Critical Care Medicine, Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea
| | - Han-Ki Park
- Department of Allergy and Clinical Immunology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Sujeong Kim
- Division of Allergy and Clinical Immunology, Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Woo-Jung Song
- Department of Allergy and Clinical Immunology, Asian Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Min-Suk Yang
- Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul, Korea
| | - Hyouk-Soo Kwon
- Department of Allergy and Clinical Immunology, Asian Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hye-Kyung Park
- Department of Internal Medicine, College of Medicine, Pusan National University, Busan, Korea
| | - Jaechun Lee
- Department of Internal Medicine, Jeju National University College of Medicine, Jeju, Korea
| | - Gyu-Young Hur
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Gang-Jee Ko
- Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Sang-Heon Kim
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Sae-Hoon Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Young-Min Ye
- Department of Allergy and Clinical Immunology, Ajou University School of Medicine, Suwon, Korea
| | - Young-Il Koh
- Department of Allergy and Clinical Immunology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Byung-Jae Lee
- Division of Allergy, Department of Internal Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - You Sook Cho
- Department of Allergy and Clinical Immunology, Asian Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hwan Seok Yong
- Department of Radiology, Korea University Guro Hospital, Seoul, Korea
| | - Tae-Bum Kim
- Department of Allergy and Clinical Immunology, Asian Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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Park HJ, Choi YJ, Park CH, Kim TH, Lee SS, Moon DH, Lee KA, Lee SE, Park MS, Kim SY, Chang YS, Lee SJ, Jung JY, Lee JH, Lee SH, Kim T, Kim SR, Kim K, Byun MK. Outstanding Characteristics of Birt-Hogg-Dube Syndrome in Korea. Diagnostics (Basel) 2023; 13:2047. [PMID: 37370942 DOI: 10.3390/diagnostics13122047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/31/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
Birt-Hogg-Dube (BHD) is a rare genetic disorder characterized by multiple lung cysts, typical skin manifestations, and renal tumors. We prospectively enrolled thirty-one subjects from four South Korean institutions with typical lung cysts, and next-generation sequencing was conducted. We prospectively enrolled thirty-one subjects from four Korean institutions with typical lung cysts. Next-generation sequencing was performed to investigate mutations in the following genes: FLCN, TSC1, TSC2, CFTR, EFEMP2, ELN, FBLN5, LTBP4, and SERPINA1. BHD was diagnosed in 11 of the 31 enrolled subjects (35.5%; FLCN mutations). Notably, we identified three novel mutations (c.1098G>A, c.139G>T, and c.1335del) that have not been previously reported. In addition to FLCN mutations, we also observed mutations in CFTR (16.1%), LTBP4 (9.7%), TSC2 (9.7%), TSC1 (3.2%), ELN (3.2%), and SERPINA1 (3.2%). According to a systematic review of 45 South Korean patients with BHD, the prevalence of pneumothorax (72.7%) was greater in South Korea than in the rest of the world (50.9%; p = 0.003). The prevalence of skin manifestations (13.6%) and renal tumors (9.1%) was lower in Korea than in the rest of the world, at 47.9% [p < 0.001] and 22.5% [p = 0.027], respectively). This study confirmed a significant prediction model for BHD based on age, number of lung cysts (>40), and maximal diameter of lung cysts (>2 cm) regardless of skin manifestations and renal tumors. Importantly, three novel mutations (c.1098G>A, c.139G>T, and c.1335del) were identified. In conclusion, South Korean patients with BHD display characteristics that are different from those observed in patients of other nationalities. Detailed characterization of lung cysts is needed to define BHD, especially in South Korea, even if patients do not present with skin or renal lesions.
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Affiliation(s)
- Hye Jung Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Yong Jun Choi
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Chul Hwan Park
- Department of Radiology, The Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Tae Hoon Kim
- Department of Radiology, The Research Institute of Radiological Science, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Sung Soo Lee
- Department of Thoracic Surgery, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Duk Hwan Moon
- Department of Thoracic Surgery, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Kyung-A Lee
- Department of Laboratory Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Sang Eun Lee
- Department of Dermatology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Moo Suk Park
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Song Yee Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Yoon Soo Chang
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Seok Jeong Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Ji Ye Jung
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Ji-Ho Lee
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju 26426, Republic of Korea
| | - Su Hwan Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Taehee Kim
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Internal Medicine, Hallym University Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul 07442, Republic of Korea
| | - Sung-Ryeol Kim
- Division of Pulmonology, Allergy and Critical Care Medicine, Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Kangjoon Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
| | - Min Kwang Byun
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul 06273, Republic of Korea
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Kim SH, Yoo JY, Cho HS, Kim SR, Cho JY, Youk S, Kim EG, Shin YM, Choe KH, Lee KM, Lee H, Yang B. Clinical and imaging features of drug-susceptible and multidrug-resistant TB in Korean adults. Int J Tuberc Lung Dis 2023; 27:487-489. [PMID: 37231602 DOI: 10.5588/ijtld.23.0017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Affiliation(s)
- S-H Kim
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - J Y Yoo
- Department of Radiology, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - H S Cho
- Department of Radiology, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - S R Kim
- Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - J Y Cho
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - S Youk
- Department of Microbiology, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - E-G Kim
- Department of Biochemistry, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - Y M Shin
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - K H Choe
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - K M Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
| | - H Lee
- Division of Pulmonary Medicine and Allergy, Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Republic of Korea
| | - B Yang
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea
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Kim SR, Son NH, Park HJ, Park KH, Park JW, Lee JH. Differences in the Recurrence Rate of Immediate Adverse Drug Reactions According to the Components of Alternative Contrast Media: Analysis of Repetitive Computed Tomography Cases in a Single Tertiary Hospital. Drug Saf 2022; 45:995-1002. [PMID: 35908149 DOI: 10.1007/s40264-022-01213-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION The recurrence rates of immediate adverse drug reactions (ADRs) to the alternative radiocontrast media (RCM) are not well known. Previous studies suggest selection of alternative RCM considering carbamoyl side chains; however, its usefulness for preventing the recurrence of ADRs has not been clearly verified. OBJECTIVE The aim of this study was to verify the recurrence rate of immediate ADRs according to the alternative RCM. METHOD This retrospective study analyzed 6420 contrast-enhanced computed tomography (CT) cases of 2009 patients registered in the ADR system from 861,664 CT cases in a single tertiary hospital between 2015 and 2020. Iohexol, iopromide, iobitridol, and iopamidol were used for CT. According to the carbamoyl side chains present, iohexol belongs to group 1, iopromide belongs to groups 1 and 2, iobitridol belongs to group 2, and iopamidol belongs to group 3. RESULTS Replacing iobitridol with iopamidol (odds ratio [OR] 2.595, 95% confidence interval [CI] 1.48-4.550) or iopromide (OR 3.354, 95% CI 1.420-7.926) as the subsequent RCM was associated with increased recurrence, while replacing iopamidol with iobitridol (OR 0.506, 95% CI 0.282-0.908) and iopromide with iohexol (OR 0.355, 95% CI 0.177-0.711) was associated with decreased recurrence. Other changes did not influence the recurrence of ADRs. CONCLUSIONS The recurrence of immediate ADRs increased in certain RCM combinations of preceding and subsequent CT scans, and the RCMs did not show cross-reactivity. Therefore, the clinical benefit of the alternative RCM considering cross-reactivity is limited. This result suggests that the side chains of RCM do not have an important role in the recurrence of immediate ADRs.
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Affiliation(s)
- Sung-Ryeol Kim
- Division of Pulmonology, Allergy and Critical Care Medicine, Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Kyounggi-do, Republic of Korea
| | - Nak-Hoon Son
- Department of Statistics, Keimyung University, Daegu, Republic of Korea
| | - Hye Jung Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Kyung Hee Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jung-Won Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Jae-Hyun Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722, Republic of Korea.
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Kim SR, Kim S, Kim SH, Park JS, Park HJ, Suh DI, Sim DW, Yang MS, Lee JH, Lee HY, Jung JW, Choi M, Kang HR. Expert opinion: The clinical usefulness of skin tests prior to the administration of beta-lactam antibiotics. Allergy Asthma Respir Dis 2022. [DOI: 10.4168/aard.2022.10.1.3] [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: 11/20/2022]
Affiliation(s)
- Sung-Ryeol Kim
- Division of Pulmonology, Allergy and Critical Care Medicine, Department of Internal Medicine, Yongin Severance Hospital, Yonsei University College of Medicine, Yongin, Korea
| | - Sujeong Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sae-Hoon Kim
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jong-Sook Park
- Division of Allergy and Respiratory Medicine, Department of Internal Medicine, Soonchunhyang University Bucheon Hospital, Bucheon, Korea
| | - Hye Jung Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Dong In Suh
- Department of Pediatrics, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
| | - Da Woon Sim
- Department of Allergy and Clinical Immunology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Min Suk Yang
- Department of Internal Medicine, SMG-SNU Boramae Medical Center, Seoul, Korea
| | - Jae-Hyun Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hwa Young Lee
- Division of Allergy, Department of Internal Medicine, Seoul St. Mary’s Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Jae-Woo Jung
- Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
| | - Mira Choi
- Department of Dermatology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
| | - Hye-Ryun Kang
- Department of Internal Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
- Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, Korea
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Lee J, Kim SR, Park JH, Park KH, Jeong KY, Lee JH, Kang CS, Kim KH, Park JW. Evaluation of Allergenicity on a ω-5 Gliadin-Deficient Cultivar in Wheat-Dependent Exercise-Induced Anaphylaxis. Allergy Asthma Immunol Res 2022; 14:379-392. [PMID: 35837822 PMCID: PMC9293598 DOI: 10.4168/aair.2022.14.4.379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 05/15/2022] [Accepted: 05/17/2022] [Indexed: 12/23/2022]
Affiliation(s)
- Jongsun Lee
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - Sung-Ryeol Kim
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jong Han Park
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung-Hee Park
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Kyoung Yong Jeong
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Hyun Lee
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | | | | | - Jung-Won Park
- Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Park HJ, Kim SR, Kim S, Lee HS, Kim BY, Kim HK, Ahn SI, Shin JH, Lee JH, Park JW. Influence of government-driven quality assessment program on patients with chronic obstructive pulmonary disease. Respir Res 2021; 22:87. [PMID: 33743704 PMCID: PMC7981961 DOI: 10.1186/s12931-021-01684-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 03/14/2021] [Indexed: 12/04/2022] Open
Abstract
Background The Korean Health Insurance Review and Assessment Service (HIRA) has launched the Chronic Obstructive Pulmonary Disease (COPD) Quality Assessment Program (CQAP) since 2014. We aimed to reveal the influence of this national program on clinical outcomes and the burden of COPD in Korea. Methods The CQAP is conducted annually. We used healthcare claims data linked with the results of the program provided by HIRA between May 2014 and April 2017. Patients were considered to have COPD if they visited a hospital for COPD management during the assessment term. Those who visited a medical institution for COPD and were prescribed COPD medications at least twice were assessed by the CQAP (assessed subjects, AS; not-assessed subjects, NAS). CQAP evaluated the pulmonary function test conduction rate, regular visitation rate, and prescription rates of COPD medications. Results Among the 560,000 patients with COPD, about 140,000 were assessed by the CQAP annually. In both groups, the pulmonary function test conduction rate and inhaled bronchodilator prescription rate improved since 2014. Compared to the NAS group, the risk of admission and all-cause mortality rate in the AS group were significantly reduced by 21.2% and 40.7%, respectively. In patients who were assessed for 3 consecutive years, all of the above variables were high at baseline and were not improved much from implementation of CQAP. In matching analysis, we observed this improvement to be limited in the COPD quality assessment year. Conclusions The CQAP by the health insurance bureau has improved the management protocol and prognosis of COPD.
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Affiliation(s)
- Hye Jung Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sung-Ryeol Kim
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sinae Kim
- Division of Biostatistics, Department of R&D Management, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Hye Sun Lee
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bo Yeon Kim
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Hye Kyoung Kim
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Sang In Ahn
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Ji Hyeon Shin
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Jae-Hyun Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea. .,Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Jung-Won Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea
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Han H, Chung SI, Park HJ, Oh EY, Kim SR, Park KH, Lee JH, Park JW. Obesity-induced Vitamin D Deficiency Contributes to Lung Fibrosis and Airway Hyperresponsiveness. Am J Respir Cell Mol Biol 2021; 64:357-367. [PMID: 33296297 DOI: 10.1165/rcmb.2020-0086oc] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 03/02/2020] [Accepted: 11/13/2020] [Indexed: 02/06/2023] Open
Abstract
Vitamin D (VitD) has pleiotropic effects. VitD deficiency is closely involved with obesity and may contribute to the development of lung fibrosis and aggravation of airway hyperresponsiveness (AHR). We evaluated the causal relationship between VitD deficiency and the lung pathologies associated with obesity. In vivo effects of VitD supplementation were analyzed using high-fat diet (HFD)-induced obese mice and TGF-β1 (transforming growth factor-β1) triple transgenic mice. Effects of VitD supplementation were also evaluated in both BEAS-2B and primary lung cells from the transgenic mice. Obese mice had decreased 25-OH VitD and VitD receptor expressions with increases of insulin resistance, renin and angiotensin-2 system (RAS) activity, and leptin. In addition, lung pathologies such as a modest increase in macrophages, enhanced TGF-β1, IL-1β, and IL-6 expression, lung fibrosis, and AHR were found. VitD supplementation to HFD-induced obese mice recovered these findings. TGF-β1-overexpressing transgenic mice enhanced macrophages in BAL fluid, lung expression of RAS, epithelial-mesenchymal transition markers, AHR, and lung fibrosis. VitD supplementation also attenuated these findings in addition to the attenuation of the expressions of TGF-β1, and phosphorylated Smad-2/3 in lung. Supplementing in vitro-stimulated BEAS-2B and primary lung cells with VitD inhibited TGF-β1 expression, supporting the suppressive effect of VitD for TGF-β1 expression. These results suggest that obesity leads to VitD deficiency and worsens insulin resistance while enhancing the expression of leptin, RAS, TGF-β1, and proinflammatory cytokines. These changes may contribute to the development of lung fibrosis and AHR. VitD supplementation rescues these changes and may have therapeutic potential for asthma with obesity.
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Affiliation(s)
| | | | - Hye Jung Park
- Department of Internal Medicine and Gangnam Severance Hospital, and
| | | | - Sung-Ryeol Kim
- Institute for Allergy
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung Hee Park
- Institute for Allergy
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Hyun Lee
- Institute for Allergy
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Jung-Won Park
- Institute for Allergy
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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11
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Park HJ, Kim SR, Kim S, Lee HS, Kim BY, Kim HK, Ahn SI, Shin JH, Lee JH, Park JW. Impact of the Asthma Quality Assessment Program on Burden of Asthma. J Allergy Clin Immunol Pract 2020; 9:419-425.e6. [PMID: 32889220 DOI: 10.1016/j.jaip.2020.08.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND In 2013, the Korean Health Insurance Review and Assessment Service launched the Asthma Quality Assessment Program (AQAP) to assess whether patients with asthma were well managed. OBJECTIVE To show the impact of the AQAP on the medical utilization behavior for asthma. METHODS We used claims data linked with the results of the AQAP performed between July 2013 and June 2017. Asthma was determined when subjects visited hospital for asthma. Subjects who used asthma medications on at least 2 different occasions were assessed by the AQAP (assessed subjects [Ass]; not-assessed subjects [NASs]). The AQAP evaluated conduction rate of the pulmonary function test, routine visit rate, and prescription rate of asthma medications. Primary clinics were classified as "good" and "not-good" clinics according to the results of the AQAP. RESULTS Of the 4.3 million subjects with asthma screened, about 0.8 million were assessed by the AQAP annually. Both the conduction rate of pulmonary function test and the prescription rate of inhaled corticosteroids in the ASs and NASs were improved. In addition, the risk of admission and yearly all-cause mortality were significantly reduced (risk reduction rate, 17.1 and 24.4%, respectively, both P < .001) in the AS group compared with the NAS group. However, effects of the AQAP varied according to the subgroup, and they were restricted to the assessment term. In addition, the admission rate and all-cause mortality were decreased by 94.7% and 45.3%, respectively, in "good" clinics as opposed to the "not-good" clinics. CONCLUSIONS Performing the AQAP improved both the management protocol and prognosis of asthma in Korea.
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Affiliation(s)
- Hye Jung Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sung-Ryeol Kim
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea; Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sinae Kim
- Data Analysis Team, Social Security Information Service, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Hye Sun Lee
- Biostatistics Collaboration Unit, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Bo Yeon Kim
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Hye Kyoung Kim
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Sang In Ahn
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Ji Hyeon Shin
- Healthcare Insurance Review and Assessment Service, Wonju, Republic of Korea
| | - Jae-Hyun Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea; Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea.
| | - Jung-Won Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea; Institute of Allergy, Yonsei University College of Medicine, Seoul, Republic of Korea
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12
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Kim SR, Kim K, Park KH, Park JW, Lee JH. Diagnostic usefulness of impulse oscillometry in adult asthmatics with normal lung function. World Allergy Organ J 2020. [DOI: 10.1016/j.waojou.2020.100213] [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: 11/30/2022] Open
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13
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Park KH, Oh EY, Han H, Kim JD, Kim SJ, Jeong KY, Kim JH, Park CO, Kim SR, Lee JH, Jeong DH, Yong TS, Lee KH, Park JW. Efficacy of transdermal immunotherapy with biodegradable microneedle patches in a murine asthma model. Clin Exp Allergy 2020; 50:1084-1092. [PMID: 32557846 DOI: 10.1111/cea.13688] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 05/21/2020] [Accepted: 06/08/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND House dust mite (HDM) is a well-known cause of asthma. Allergen-specific immunotherapy (AIT) can only modify the natural course of the disease. Conventional routes of HDM AIT are subcutaneous or sublingual. Subcutaneous immunotherapy (SCIT) has a disadvantage of systemic hypersensitive reaction, and the sublingual immunotherapy has a disadvantage of local allergic reaction and low drug adherence. OBJECTIVE To overcome the weak points of conventional AIT, we developed a HDM loaded biodegradable microneedle patch (MNP) for transdermal immunotherapy (TDIT). We aim to demonstrate the efficacy of TDIT in murine asthma model triggered by HDM compared with conventional SCIT. METHODS To make HDM asthma mouse model, 5-week-old BALB/c female mice were sensitized and challenged by intranasal administration of HDM. The mice were divided into 5 groups: sham, asthma, low (10 µg) and high dose (100 µg) SCIT, and TDIT (10 µg). To make HDM loaded MNP, droplet-born air blowing method was used. Airway hyperresponsiveness and allergic inflammation markers were analysed by bronchoalveolar lavage fluid, immunohistochemistry, serum immunoglobulin (Ig) analysis, and lung cytokine assays. RESULTS Airway hyperresponsiveness was ameliorated by TDIT. Eosinophilic inflammation in bronchoalveolar lavage was improved without adverse reactions. Reduction of Th2 (IL-4, IL-5, and IL-13) cytokines, and HDM-specific IgE, induction of Treg (IL-10, TGF-β), Th1 (IFN-γ) cytokines were observed. Eosinophilic infiltration, goblet cell hyperplasia, and subepithelial fibrosis were also alleviated by TDIT. These changes were more significant in the TDIT group than in subcutaneous AIT group. CONCLUSION In conclusion, HDM loaded biodegradable TDIT is a novel treatment option to treat asthma which showed more effectiveness and may have better safety profiles than conventional SCIT.
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Affiliation(s)
- Kyung Hee Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea
| | - Eun Yi Oh
- Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea
| | - Heejae Han
- Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea
| | - Jung Dong Kim
- Raphas, Seoul, South Korea.,Prolagen, Seoul, South Korea
| | | | - Kyoung Yong Jeong
- Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea
| | - Ji Hye Kim
- Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Chang Ook Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea.,Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Sung-Ryeol Kim
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea
| | - Jae-Hyun Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea
| | - Do Hyeon Jeong
- Raphas, Seoul, South Korea.,Prolagen, Seoul, South Korea
| | - Tai-Soon Yong
- Department of Environmental Medical Biology, Institute of Tropical Medicine, Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul, South Korea
| | - Kwang Hoon Lee
- Prolagen, Seoul, South Korea.,Department of Dermatology & Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Jung-Won Park
- Division of Allergy and Immunology, Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea.,Institute of Allergy, Yonsei University College of Medicine, Seoul, South Korea.,Prolagen, Seoul, South Korea
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14
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Affiliation(s)
- Sung-Ryeol Kim
- Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
| | - Jae-Hyun Lee
- Division of Allergy and Immunology, Department of Internal Medicine, Institute of Allergy, Yonsei University College of Medicine, Seoul, Korea
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15
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Kim EJ, Kwak YG, Park SH, Kim SR, Shin MJ, Yoo HM, Han SH, Kim DW, Choi YH, Yoo JH. Trends in device utilization ratios in intensive care units over 10-year period in South Korea: device utilization ratio as a new aspect of surveillance. J Hosp Infect 2017; 100:e169-e177. [PMID: 29042233 DOI: 10.1016/j.jhin.2017.10.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [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: 08/31/2017] [Accepted: 10/10/2017] [Indexed: 11/30/2022]
Abstract
BACKGROUND Device-associated infection (DAI) is an important issue related to patient safety. It is important to reduce unnecessary device utilization in order to decrease DAI rates. AIM To investigate the time trend of device utilization ratios (DURs) of voluntarily participating hospitals, collected over a 10-year period through the Korean National Healthcare-associated Infections Surveillance System (KONIS). METHODS DURs from 2006 to 2015 in 190 intensive care units (ICUs) participating in KONIS were included in this study. DURs were calculated as the ratio of device-days to patient-days. The pooled incidences of DAIs and DURs were calculated for each year of participation, and the year-wise trends were analysed. FINDINGS Year-wise ventilator utilization ratio (V-DUR) increased significantly from 0.40 to 0.41 (F = 6.27, P < 0.01), urinary catheter utilization ratio (U-DUR) increased non-significantly from 0.83 to 0.84 (F = 1.66, P = 0.10), and C-line utilization ratio (CL-DUR) decreased non-significantly from 0.55 to 0.51 (F = 1.62, P = 0.11). In the subgroup analysis, 'medical ICU' (F = 2.79, P < 0.01) and 'hospital with >900 beds' (F = 3.07, P < 0.01) were associated with the significant increase in V-DUR. CONCLUSION In Korea, V-DUR showed a significant, year-wise increasing trend. The trends for U-DUR and CL-DUR showed no significant decrease. Efforts are required to ensure the reduction of DURs.
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Affiliation(s)
- E J Kim
- Department of Infectious Diseases, Ajou University School of Medicine, Suwon, Republic of Korea
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
| | - S H Park
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - S R Kim
- Infection Control Office, Korea University Guro Hospital, Seoul, Republic of Korea
| | - M J Shin
- Infection Control Office, Seoul National University Bundang Hospital, Seongnam, Republic of Korea
| | - H M Yoo
- Infection Control Office, Inje University Sanggye Paik Hospital, Seoul, Republic of Korea
| | - S H Han
- Department of Nursing, Soonchunhyang University College of Medicine, Cheonan, Republic of Korea
| | - D W Kim
- Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Republic of Korea
| | - Y H Choi
- Department of Infectious Diseases, Ajou University School of Medicine, Suwon, Republic of Korea.
| | - J H Yoo
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
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16
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Kim SR, Kim KY, Jeong JS, Kim MJ, Kim KH, Choi KH, Kim I. Population genetic characterization of the Japanese oak silkmoth, Antheraea yamamai (Lepidoptera: Saturniidae), using novel microsatellite markers and mitochondrial DNA gene sequences. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029608. [PMID: 28407192 DOI: 10.4238/gmr16029608] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Japanese oak silkmoth, Antheraea yamamai Guérin-Méneville, 1861 (Lepidoptera: Saturniidae), is an important natural resource of industrial value for silk fiber production. Owing to a lack of geographic and population genetic information, systematic domestication of An. yamamai has not been possible yet. In this study, 10 microsatellite markers developed using next-generation sequencing and two mitochondrial DNA (mtDNA) gene sequences (COI and ND4) were used to investigate the genetic variation and geographic structure of An. yamamai populations in South Korea. The two mtDNA gene sequences revealed very low total genetic variation and, consequently, low geographic variation, validating the use of more variable molecular markers. Genotyping of 76 An. yamamai individuals from nine localities in South Korea showed that the observed number of alleles at each locus ranged from 3 to 26, the polymorphism information content was 0.2990-0.9014, the observed and expected heterozygosities were 0.3252-0.9076 and 0.2500-0.9054, respectively, and FIS was -0.654-0.520. The population-based FIS, FST, RST, and global Mantel tests all suggested that the An. yamamai populations were overall well-interconnected, suggesting that any population can be used as a genetic source for domestication. Nevertheless, STRUCTURE analyses using microsatellite data and mtDNA sequences indicated the presence of two genetic pools in many populations, although a plausible explanation for this observation requires further studies.
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Affiliation(s)
- S R Kim
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, Wanju-gun, Republic of Korea
| | - K Y Kim
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, Wanju-gun, Republic of Korea
| | - J S Jeong
- College of Agriculture & Life Sciences, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, Republic of Korea
| | - M J Kim
- College of Agriculture & Life Sciences, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, Republic of Korea
| | - K-H Kim
- C & K Genomics Inc., Seoul National University, Seoul, Republic of Korea
| | - K H Choi
- Department of Agricultural Biology, National Academy of Agricultural Science, Rural Development Administration, Wanju-gun, Republic of Korea
| | - I Kim
- College of Agriculture & Life Sciences, Chonnam National University, 300 Yongbong-dong, Buk-gu, Gwangju, Republic of Korea
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17
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Kwak YG, Choi JY, Yoo HM, Lee SO, Kim HB, Han SH, Choi HJ, Kim SR, Kim TH, Chun HK, Koo HS. Validation of the Korean National Healthcare-associated Infections Surveillance System (KONIS): an intensive care unit module report. J Hosp Infect 2017; 96:377-384. [PMID: 28545827 DOI: 10.1016/j.jhin.2017.04.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/04/2017] [Indexed: 11/27/2022]
Abstract
BACKGROUND National surveillance data should be validated to identify methodological problems within the surveillance programme and data quality issues. AIM To test the validity of healthcare-associated infection (HAI) rate data from the Korean National Healthcare-associated Infections Surveillance System (KONIS). METHODS Records from intensive care units of 12 (14.8%) of 81 participating hospitals for January-March 2014 were examined. The validation team reviewed 406 medical records of 110 patients with 114 reported HAIs - including 34 urinary tract infections (UTIs), 57 bloodstream infections (BSIs) and 23 cases of pneumonia (PNEU) - and 296 patients with no reported HAIs during one-day visits conducted in August and September 2014. The reviewers' diagnosis of HAI was regarded as the reference standard; in ambiguous cases, the KONIS Steering Committee confirmed the diagnosis of HAI. FINDINGS Sensitivity values for UTIs, BSIs and PNEU were 85.3%, 74.0% and 66.7%, and specificity values were 98.7%, 99.1% and 98.7%, respectively. Positive predictive values were 85.3%, 94.7% and 78.3%, and negative predictive values were 98.7%, 94.6% and 97.7%, respectively. Sensitivity for PNEU was lower than that for UTIs and BSIs. The hospitals participating in KONIS infrequently reported conditions that were not HAIs. Sensitivity for BSIs was lower in this study than in KONIS validation studies conducted in 2008 and 2010. CONCLUSIONS KONIS data are generally reliable; however, sensitivity for BSIs exhibited a decrease. This study shows the need for ongoing validation and continuous training of surveillance personnel to maintain the accuracy of surveillance data.
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Affiliation(s)
- Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, South Korea.
| | - J Y Choi
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, South Korea
| | - H M Yoo
- Infection Control Office, Inje University Sanggye Paik Hospital, Seoul, South Korea
| | - S-O Lee
- Department of Infectious Diseases, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, South Korea
| | - H B Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - S H Han
- Department of Nursing, Soonchunhyang University College of Medicine, Cheonan, South Korea
| | - H J Choi
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, South Korea
| | - S R Kim
- Infection Control Office, Korea University Guro Hospital, Seoul, South Korea
| | - T H Kim
- Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, South Korea
| | - H K Chun
- Department of Infection Control, Kyunghee University Hospital, Seoul, South Korea
| | - H-S Koo
- Division of Infectious Disease Control, Korea Centres for Disease Control and Prevention, Osong, South Korea
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Lee JY, Kim G, Kim SR, Lee YH, Lee BW, Cha BS, Kang ES. Clinical parameters affecting dapagliflozin response in patients with type 2 diabetes. Diabetes Metab 2017; 43:191-194. [PMID: 28089373 DOI: 10.1016/j.diabet.2016.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 11/09/2016] [Accepted: 11/21/2016] [Indexed: 01/10/2023]
Affiliation(s)
- J-Y Lee
- Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722 Seoul, South Korea; Severance Hospital, Seoul, South Korea; Graduate School, Yonsei University College of Medicine, Seoul, South Korea
| | - G Kim
- Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722 Seoul, South Korea; Severance Hospital, Seoul, South Korea; Graduate School, Yonsei University College of Medicine, Seoul, South Korea
| | - S R Kim
- Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722 Seoul, South Korea; Severance Hospital, Seoul, South Korea; Graduate School, Yonsei University College of Medicine, Seoul, South Korea
| | - Y-H Lee
- Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722 Seoul, South Korea; Severance Hospital, Seoul, South Korea; Graduate School, Yonsei University College of Medicine, Seoul, South Korea; Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea
| | - B-W Lee
- Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722 Seoul, South Korea; Severance Hospital, Seoul, South Korea; Graduate School, Yonsei University College of Medicine, Seoul, South Korea; Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea
| | - B-S Cha
- Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722 Seoul, South Korea; Severance Hospital, Seoul, South Korea; Graduate School, Yonsei University College of Medicine, Seoul, South Korea; Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea
| | - E S Kang
- Department of Internal Medicine, Yonsei University College of Medicine, 50-1 Yonsei-ro, Seodaemun-gu, 03722 Seoul, South Korea; Severance Hospital, Seoul, South Korea; Graduate School, Yonsei University College of Medicine, Seoul, South Korea; Institute of Endocrine Research, Yonsei University College of Medicine, Seoul, South Korea.
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Park HJ, Lee JH, Kim SR, Kim SH, Park KH, Lee CK, Kang BD, Beom SH, Shin SJ, Jung M, Park JW. A New Practical Desensitization Protocol for Oxaliplatin-Induced Immediate Hypersensitivity Reactions: A Necessary and Useful Approach. J Investig Allergol Clin Immunol 2016; 26:168-76. [DOI: 10.18176/jiaci.0038] [Citation(s) in RCA: 14] [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: 11/20/2022] Open
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20
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Choi HJ, Adiyani L, Sung J, Choi JY, Kim HB, Kim YK, Kwak YG, Yoo H, Lee SO, Han SH, Kim SR, Kim TH, Lee HM, Chun HK, Kim JS, Yoo JD, Koo HS, Cho EH, Lee KW. Five-year decreased incidence of surgical site infections following gastrectomy and prosthetic joint replacement surgery through active surveillance by the Korean Nosocomial Infection Surveillance System. J Hosp Infect 2016; 93:339-46. [PMID: 26944901 DOI: 10.1016/j.jhin.2015.12.021] [Citation(s) in RCA: 24] [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: 08/17/2015] [Accepted: 12/28/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Surveillance of healthcare-associated infection has been associated with a reduction in surgical site infection (SSI). AIM To evaluate the Korean Nosocomial Infection Surveillance System (KONIS) in order to assess its effects on SSI since it was introduced. METHODS SSI data after gastrectomy, total hip arthroplasty (THA), and total knee arthroplasty (TKA) between 2008 and 2012 were analysed. The pooled incidence of SSI was calculated for each year; the same analyses were also conducted from hospitals that had participated in KONIS for at least three consecutive years. Standardized SSI rates for each year were calculated by adjusting for SSI risk factors. SSI trends were analysed using the Cochran-Armitage test. FINDINGS The SSI rate following gastrectomy was 3.12% (522/16,918). There was a significant trend of decreased crude SSI rates over five years. This trend was also evident in analysis of hospitals that had participated for more than three years. The SSI rate for THA was 2.05% (157/7656), which decreased significantly from 2008 to 2012. The risk factors for SSI after THA included the National Nosocomial Infections Surveillance risk index, trauma, reoperation, and age (60-69 years). The SSI rate for TKA was 1.90% (152/7648), which also decreased significantly during a period of five years. However, the risk-adjusted analysis of SSI did not show a significant decrease for all surgical procedures. CONCLUSION The SSI incidence of gastrectomy and prosthetic joint replacement declined over five years as a result of active surveillance by KONIS.
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Affiliation(s)
- H J Choi
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, South Korea.
| | - L Adiyani
- Department of Epidemiology and Institute of Environment and Health, Seoul National University, Seoul, South Korea
| | - J Sung
- Department of Epidemiology and Institute of Environment and Health, Seoul National University, Seoul, South Korea
| | - J Y Choi
- Department of Internal Medicine and AIDS Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - H B Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - Y K Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Seoul, South Korea
| | - H Yoo
- Infection Control Office, Inje University Sanggye Paik Hospital, Seoul, South Korea
| | - Sang-Oh Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - S H Han
- Department of Infection Prevention and Control, Soonchunhyang University Bucheon Hospital, Bucheon, South Korea
| | - S R Kim
- Infection Control Office, Korea University Guro Hospital, Seoul, South Korea
| | - T H Kim
- Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, South Korea
| | - H M Lee
- Department of Laboratory Medicine, Kwandong University College of Medicine, Gangneung, South Korea
| | - H K Chun
- Department of Infection Control, Kyunghee University Hospital, Seoul, South Korea
| | - J-S Kim
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, South Korea
| | - J D Yoo
- Department of Orthopedic Surgery, Ewha Woman's University School of Medicine, Seoul, South Korea
| | - H-S Koo
- Division of Infectious Disease Control, Korean Centers for Disease Control and Prevention, Osong, South Korea
| | - E H Cho
- Division of Infectious Disease Control, Korean Centers for Disease Control and Prevention, Osong, South Korea
| | - K W Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Wonju, South Korea
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Choi JY, Kwak YG, Yoo H, Lee SO, Kim HB, Han SH, Choi HJ, Kim HY, Kim SR, Kim TH, Lee H, Chun HK, Kim JS, Eun BW, Kim DW, Koo HS, Cho EH, Lee K. Trends in the distribution and antimicrobial susceptibility of causative pathogens of device-associated infection in Korean intensive care units from 2006 to 2013: results from the Korean Nosocomial Infections Surveillance System (KONIS). J Hosp Infect 2016; 92:363-71. [PMID: 26876746 DOI: 10.1016/j.jhin.2015.12.012] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 12/16/2015] [Indexed: 10/22/2022]
Abstract
BACKGROUND For all countries, information on pathogens causing healthcare-associated infections is important in order to develop proper strategies for preventing and treating nosocomial infections. AIM To assess the change in frequencies and antimicrobial resistance of pathogens causing device-associated infections (DAIs) in intensive care units (ICUs) in South Korea between July 2006 and June 2014. METHODS Data from the Korean Nosocomial Infections Surveillance System (KONIS) were analysed, including three major DAI types in ICUs. FINDINGS The frequency of Gram-negative bacteria gradually increased for central line-associated bloodstream infection (CLABSI) and ventilator-associated pneumonia (VAP) (from 24.6% to 32.6% and from 52.8% to 73.5%, respectively). By contrast, the frequency of Gram-positive bacteria decreased from 58.6% to 49.2% for CLABSI, and from 44.3% to 23.8% for VAP (P < 0.001). Staphylococcus aureus was the most frequent causative pathogen in CLABSI throughout the surveillance period, but for VAP was replaced as the most frequent pathogen by Acinetobacter baumannii as of 2010. Candida albicans was the most frequent pathogen for catheter-associated urinary tract infection. The meticillin resistance rate in S. aureus decreased from 95% to 90.2% (P < 0.001); amikacin resistance in Klebsiella pneumoniae and Escherichia coli decreased from 43.8% to 14.7% and from 15.0% to 1.8%, respectively (P < 0.001); imipenem resistance in A. baumannii increased from 52.9% to 89.8% (P < 0.001). CONCLUSION The proportion of Gram-negative bacteria as nosocomial pathogens for CLABSI and VAP has increased. The prevalence of A. baumannii causing DAIs in Korean ICUs has increased rapidly, as has the rate of carbapenem resistance in these bacteria.
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Affiliation(s)
- J Y Choi
- Department of Internal Medicine and AIDS Research Institute, Yonsei University College of Medicine, Seoul, South Korea.
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, South Korea
| | - H Yoo
- Infection Control Office, Inje University Sanggye Paik Hospital, Seoul, South Korea
| | - S-O Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - H B Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - S H Han
- Department of Infection Prevention and Control, Soonchunhyang University Bucheon Hospital, Bucheon, South Korea
| | - H J Choi
- Department of Internal Medicine, Ewha Woman's University School of Medicine, Seoul, South Korea
| | - H Y Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - S R Kim
- Infection Control Office, Korea University Guro Hospital, Seoul, South Korea
| | - T H Kim
- Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, South Korea
| | - H Lee
- Department of Laboratory Medicine, Kwandong University College of Medicine, Gangneung, South Korea
| | - H K Chun
- Department of Infection Control, Kyunghee University Hospital, Seoul, South Korea
| | - J-S Kim
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, South Korea
| | - B W Eun
- Department of Pediatrics, Eulji University School of Medicine, Eulji General Hospital, Seoul, South Korea
| | - D W Kim
- Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Ilsan, South Korea
| | - H-S Koo
- Division of Infectious Disease Control, Korea Centers for Disease Control and Prevention, Osong, South Korea
| | - E-H Cho
- Division of Epidemic Intelligence Service, Korea Centers for Disease Control and Prevention, Osong, South Korea
| | - K Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, South Korea
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Lee YJ, Cho S, Kim SR. A possible role of serum uric acid as a marker of metabolic syndrome. Intern Med J 2015; 44:1210-6. [PMID: 25228498 DOI: 10.1111/imj.12588] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 09/01/2014] [Indexed: 02/04/2023]
Abstract
BACKGROUND/AIMS The association between serum uric acid (SUA) levels and metabolic syndrome (MetS) has recently been reported in several cross-sectional and longitudinal studies. We investigated SUA as a biomarker to predict future development of MetS in healthy Korean men without diabetes or hypertension and determined the optimal cut-off levels of SUA. METHODS A retrospective cohort study was conducted using data from healthy men who received a general health check-up in 2003. A total of 1809 participants free of MetS, diabetes and hypertension was enrolled. Participants were classified into three groups based on SUA levels: group 1 (<5.5 mg/dL), group 2 (5.5-6.9 mg/dL) and group 3 (≥7.0 mg/dL). RESULTS During 13,802 person-years of follow up, 127 participants developed MetS. After adjusting for multiple associated parameters, SUA was significantly associated with incident MetS (hazard ratios comparing groups 2 and 3 vs group 1, 2.45 and 3.47 respectively; P < 0.001). In receiver operating characteristic curve analysis, the optimal cut-off level for SUA to predict the development of MetS was 6.5 mg/dL. CONCLUSION Our results indicate that an increased level of SUA, even within the normal range, is associated with future development of MetS in healthy middle-aged men.
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Affiliation(s)
- Y-J Lee
- Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
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Jo KI, Kim SR, Choi JH, Kim KH, Jeon P. Contrast-enhanced angiographic cone-beam computed tomography without pre-diluted contrast medium. Neuroradiology 2015; 57:1121-6. [PMID: 26293128 DOI: 10.1007/s00234-015-1570-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 08/04/2015] [Indexed: 11/25/2022]
Abstract
INTRODUCTION Contrast-enhanced cone-beam computed tomography (CBCT) has been introduced and accepted as a useful technique to evaluate delicate vascular anatomy and neurovascular stents. Current protocol for CBCT requires quantitative dilution of contrast medium to obtain adequate quality images. Here, we introduce simple methods to obtain contrast-enhanced CBCT without quantitative contrast dilution. METHODS A simple experiment was performed to estimate the change in flow rate in the internal carotid artery during the procedure. Transcranial doppler (TCD) was used to evaluate the velocity change before and after catheterization and fluid infusion. In addition, 0.3 cm(3)/s (n = 3) and 0.2 cm(3)/s (n = 7) contrast infusions were injected and followed by saline flushes using a 300 mmHg pressure bag to evaluate neurovascular stent and host arteries. RESULTS Flow velocities changed -15 ± 6.8 % and +17 ± 5.5 % from baseline during catheterization and guiding catheter flushing with a 300 mmHg pressure bag, respectively. Evaluation of the stents and vascular structure was feasible using this technique in all patients. Quality assessment showed that the 0.2 cm(3)/s contrast infusion protocol was better for evaluating the stent and host artery. CONCLUSION Contrast-enhanced CBCT can be performed without quantitative contrast dilution. Adequate contrast dilution can be achieved with a small saline flush and normal blood flow.
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Affiliation(s)
- K I Jo
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - S R Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - J H Choi
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - K H Kim
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea
| | - P Jeon
- Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 135-710, South Korea.
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Choi JY, Kwak YG, Yoo H, Lee SO, Kim HB, Han SH, Choi HJ, Kim YK, Kim SR, Kim TH, Lee H, Chun HK, Kim JS, Eun BW, Kim DW, Koo HS, Bae GR, Lee K. Trends in the incidence rate of device-associated infections in intensive care units after the establishment of the Korean Nosocomial Infections Surveillance System. J Hosp Infect 2015; 91:28-34. [PMID: 26149593 DOI: 10.1016/j.jhin.2015.06.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 02/02/2015] [Indexed: 11/27/2022]
Abstract
BACKGROUND The effectiveness of continuous nationwide surveillance on healthcare-associated infections should be investigated in each country. AIM To assess the rate of device-associated infections (DAIs) in intensive care units (ICUs) since the establishment of the Korean Nosocomial Infections Surveillance System (KONIS). METHODS Nationwide data were obtained on the incidence rate of DAI in ICUs reported to KONIS by all participating hospitals. The three major DAIs were studied: ventilator-associated pneumonia (VAP), central line-associated bloodstream infection (CABSI), and catheter-associated urinary tract infection (CAUTI). The pooled and year-wise incidence rates (cases per 1000 device-days) of these DAIs were determined for the period 2006 and 2012. In addition, data from institutions that had participated in KONIS for at least three consecutive years were analysed separately. FINDINGS The number of ICUs participating in KONIS gradually increased from 76 in 2006 to 162 in 2012. Between 2006 and 2012, the incidence rate per 1000 device-days for VAP decreased significantly from 3.48 to 1.64 (F = 11, P < 0.01), for CAUTI the rate decreased non-significantly from 1.85 to 1.26 (F = 2.02, P = 0.07), and for CABSI the rate also decreased non-significantly from 3.4 to 2.57 (F = 1.73, P = 0.12). In the 132 ICUs that had participated in KONIS for at least three consecutive years, the VAP rate significantly decreased from the first year to third year (F = 20.57, P < 0.01), but the rates of CAUTI (F = 1.06, P = 0.35) and CABSI (F = 1.39, P = 0.25) did not change significantly. CONCLUSION The decreased incidence rate of VAP in ICUs in Korea might be associated with the continuous prospective surveillance provided by KONIS.
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Affiliation(s)
- J Y Choi
- Department of Internal Medicine and AIDS Research Institute, Yonsei University College of Medicine, Seoul, South Korea.
| | - Y G Kwak
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, South Korea
| | - H Yoo
- Infection Control Office, Inje University Sanggye Paik Hospital, Seoul, South Korea
| | - S-O Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - H B Kim
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul, South Korea
| | - S H Han
- Department of Infection Prevention and Control, Soonchunhyang University Bucheon Hospital, Bucheon, South Korea
| | - H J Choi
- Department of Internal Medicine, Ewha Womans University School of Medicine, Seoul, South Korea
| | - Y K Kim
- Department of Internal Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - S R Kim
- Infection Control Office, Korea University Guro Hospital, Seoul, South Korea
| | - T H Kim
- Department of Internal Medicine, Soonchunhyang University College of Medicine, Seoul, South Korea
| | - H Lee
- Department of Laboratory Medicine, Kwandong University College of Medicine, Gangneung, South Korea
| | - H K Chun
- Department of Infection Control, Kyunghee University Hospital, Seoul, South Korea
| | - J-S Kim
- Department of Laboratory Medicine, Hallym University College of Medicine, Seoul, South Korea
| | - B W Eun
- Department of Pediatrics, Eulji University School of Medicine, Eulji General Hospital, Seoul, South Korea
| | - D W Kim
- Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Ilsan, South Korea
| | - H-S Koo
- Division of Infectious Disease Control, Korea Centers for Disease Control & Prevention, Osong, South Korea
| | - G-R Bae
- Division of Epidemic Intelligence Service, Korea Centers for Disease Control and Prevention, Osong, South Korea
| | - K Lee
- Department of Laboratory Medicine and Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, South Korea
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Kim SR, Kim DI, Kim SH, Lee H, Lee KS, Cho SH, Lee YC. NLRP3 inflammasome activation by mitochondrial ROS in bronchial epithelial cells is required for allergic inflammation. Cell Death Dis 2014. [PMID: 25356867 DOI: 10.1038/cddis.2014.460.] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Abnormality in mitochondria has been suggested to be associated with development of allergic airway disorders. In this study, to evaluate the relationship between mitochondrial reactive oxygen species (ROS) and NLRP3 inflammasome activation in allergic asthma, we used a newly developed mitochondrial ROS inhibitor, NecroX-5. NecroX-5 reduced the increase of mitochondrial ROS generation in airway inflammatory cells, as well as bronchial epithelial cells, NLRP3 inflammasome activation, the nuclear translocation of nuclear factor-κB, increased expression of various inflammatory mediators and pathophysiological features of allergic asthma in mice. Finally, blockade of IL-1β substantially reduced airway inflammation and hyperresponsiveness in the asthmatic mice. These findings suggest that mitochondrial ROS have a critical role in the pathogenesis of allergic airway inflammation through the modulation of NLRP3 inflammasome activation, providing a novel role of airway epithelial cells expressing NLRP3 inflammasome as an immune responder.
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Affiliation(s)
- S R Kim
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University - Biomedical Research Institute of Chonbuk National University Hospital, Deokjin-gu, Jeonju, South Korea
| | - D I Kim
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University - Biomedical Research Institute of Chonbuk National University Hospital, Deokjin-gu, Jeonju, South Korea
| | - S H Kim
- Department of Product Strategy and Development, LG Life Sciences Ltd, Seoul, Korea
| | - H Lee
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University - Biomedical Research Institute of Chonbuk National University Hospital, Deokjin-gu, Jeonju, South Korea
| | - K S Lee
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University - Biomedical Research Institute of Chonbuk National University Hospital, Deokjin-gu, Jeonju, South Korea
| | - S H Cho
- Division of Allergy-Immunology, Department of Medicine, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Y C Lee
- Department of Internal Medicine, Research Center for Pulmonary Disorders, Chonbuk National University Medical School, Research Institute of Clinical Medicine of Chonbuk National University - Biomedical Research Institute of Chonbuk National University Hospital, Deokjin-gu, Jeonju, South Korea
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Lee YJ, Kim MS, Cho S, Kim SR. Reply to Chuang Li and colleagues' letter 'Depression, anxiety and reduced quality of life in predialysis: differences across the CKD stages?'. Int J Clin Pract 2014; 68:658. [PMID: 24750531 DOI: 10.1111/ijcp.12423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Y-J Lee
- Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
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Song J, Apple S, Goodglick L, Mah VH, Kim SR, Alavi MT, Chia D, Deng X, Chang HR. Abstract P5-03-12: Prognostic role of stem cell markers in triple-negative breast cancer (TNBC). Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p5-03-12] [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: Triple-negative breast cancer (TNBC) is among the most aggressive types of breast cancer with frequent recurrence and death despite chemotherapy. Studies have shown that cancer stem cells play a key role in many of the drug resistant cancers including TNBC. In this study, we report the expressions of four stem cell markers in 158 TNBC tumors.
Design: Clinicopathological data were obtained from 158 triple negative breast cancers between 2002 and 2010. Tissue microarray was constructed and immunohistochemistry stains (IHC) for CD44 and CD24, CD 133 and ALDH1 were performed using the streptavidin-biotin method. Each set of TNBC consists of normal, ductal carcinoma in situ and invasive areas for assessment of IHC stains. Statistical analysis was done on the following parameters: Histological types, modified Bloom and Richardson grades, lymph-vascular invasion, lymph node status, tumor size, Ki67, presence of lymphocytic host response, age >50 or <50, BRCA status, prognosis (recurrence and death) and chemotherapeutic response. P values less than 0.05 were considered statistically significant.
Results: the mean age of this cohort of TNBC patients was 55 with 64% white, 13.2% black, 12.6% Asian/Pacific, 3.8% Hispanic/Latino and 1.9% other. The majority of these tumors (82.3%) were grade 3, 15.2% were grade 2, and less than 1% was grade 1. CD24, CD44 and CD133 expressions were significantly higher in TNBC than in normal breast tissues (p = 5.53 e-10, p = 1.14 e-11, p = 2.25 e-08 respectively). While both CD24 and CD133 expressions predicted poor survival (p = 0.073 and p = 0.043 respectively), neither was associated with recurrence. In contrast to CD24, CD44 and CD133 expressions, ALDH-1 expression was rare in TNBC and surrounding normal tissues. When expressed, ALDH-1 was associated with poor survival but cases were too few to reach significance. None of the four stem cell markers studied were associated with any of the conventional histopathologic features and BRCA1 or BRCA2 mutations.
Conclusions: Our study suggests that stem cell marker(s) may be prognostically important in TNBC patients. When it is fully characterized it may provide new insight in developing effective therapeutic strategies targeting stem cell related signaling pathways.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P5-03-12.
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Affiliation(s)
- J Song
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - S Apple
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - L Goodglick
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - VH Mah
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - SR Kim
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - MT Alavi
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - D Chia
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - X Deng
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
| | - HR Chang
- Gonda/UCLA Breast Cancer Research Laboratory, Los Angeles, CA; Revlon/UCLA Breast Center, Los Angeles, CA; David Geffen School of Medicine at UCLA, Los Angeles, CA; Kyung Hee University, Seoul, Republic of Korea
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Lee DH, Kim HR, Kim SR, Kim YH, Kim DK, Park SI. Comparison of clinical outcomes after conservative and surgical treatment of isolated anastomotic leaks after esophagectomy for esophageal cancer. Dis Esophagus 2013; 26:609-15. [PMID: 23237428 DOI: 10.1111/dote.12011] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The clinical course and outcome of isolated anastomotic leaks (IALs) after esophagectomy are significantly different from those of necrotic leaks. The purpose of this study was to investigate the clinical features, diagnosis, treatment, and long-term outcome in patients with IALs after esophagectomy with reconstruction for esophageal cancer. A total of 663 patients underwent esophagectomy with esophageal reconstruction because of esophageal cancer between 2000 and 2010 at the Seoul Asan Medical Center. IALs occurred in 23 patients (3.5%). All patients with IAL were male, with a median age of 61 years. Patients with IAL were divided into three groups based on their clinical course. group A comprised patients who had definite clinical symptoms and/or signs indicating mediastinal contamination or leak before routine contrast esophagography was performed. Groups B and C comprised patients who had no definite clinical symptoms and/or signs of leaks before the routine contrast examination. Furthermore, group B contained those patients who resumed oral intake because no leak was found in the routine contrast examination and was diagnosed some days after resuming oral intake. Group C contained those patients who kept fasting because the leak was found in the routine contrast examination. The median follow-up period was 30 months. The mean time to closure of the IAL was 70.1 ± 96.0 days (range 4-364). There was a 72.7% overall closure rate within 60 days. By univariate analysis, the mean time to closure of the IAL was found to be significantly longer for group A patients or in cases where the patients had an uncontained leak, leukocytosis, or empyema. However, there was no statistically significant differences in age, neoadjuvant treatment, site of anastomosis (cervical vs. thoracic), fever, or treatment of the leak. By multivariate analysis, group A was found to be an independent predictive factor for the time to closure of the IAL. Repeat contrast studies revealed no anastomotic leaks in 18 patients and the formation of contained fistula in four cases (excluding one patient who died in hospital). The four patients with a contained fistula showed no clinical symptoms or signs, and tolerated resumed oral intake. IALs were resolved in most cases with low leak-related mortality, and resolution of the leaks occurred within 2 months in the majority of patients.
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Affiliation(s)
- D H Lee
- Department of Thoracic and Cardiovascular Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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Lee YJ, Kim MS, Cho S, Kim SR. Association of depression and anxiety with reduced quality of life in patients with predialysis chronic kidney disease. Int J Clin Pract 2013; 67:363-8. [PMID: 23521328 DOI: 10.1111/ijcp.12020] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
AIM Although depression and anxiety are the most common psychological problems among dialysis patients, little is known about the association between depression, anxiety and quality of life (QOL) in patients with predialysis chronic kidney disease (CKD). Therefore, we assessed the prevalence of depression and anxiety, and their association with QOL in patients with predialysis CKD. METHODS Two hundred and eight predialysis patients (male 61.1%) with a mean age of 55.7 ± 13.7 years and an estimated glomerular filtration rate < 60 ml/min/1.73 m(2) were enrolled. Depression and anxiety were assessed with the Hospital Anxiety and Depression Scale. Patients with anxiety and depression scores ≥ 8 were diagnosed with anxiety and depression disorders respectively. The WHOQOL-BREF questionnaire was used to assess patient QOL. RESULTS The prevalence of depression (47.1%) and anxiety (27.6%) did not differ across CKD stages. Depression correlated positively with age, employment, income, education, comorbidity index, haemoglobin level, albumin concentration and anxiety score, and negatively with all WHOQOL-BREF domain scores. Anxiety correlated significantly with QOL, but not with socioeconomic factors. In a multiple regression analysis, haemoglobin level, anxiety and QOL were independent factors associated with depression. In a linear regression analysis, depression and anxiety independently correlated with QOL after we adjusted for age, alcohol use, employment, income, education, haemoglobin level and albumin concentration. CONCLUSIONS Patients with predialysis CKD have a high prevalence of depression and anxiety, which are associated with reduced QOL. Early detection of depression and anxiety and active interventions should be considered to improve the QOL of these patients.
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Affiliation(s)
- Y-J Lee
- Department of Medicine, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine, Changwon, Korea
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Kim SR, Cho MH, Kim WJ, Song JY, Cheong HJ. P137: Effectiveness of a hand hygiene improvement program in doctors: active monitoring and real-time feedback. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688096 DOI: 10.1186/2047-2994-2-s1-p137] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Shin JW, Jung SW, Park BR, Kim CJ, Eum JB, Kim BG, Jeong ID, Bang SJ, Lee SH, Kim SR, Park NH. Prediction of response to entecavir therapy in patients with HBeAg-positive chronic hepatitis B based on on-treatment HBsAg, HBeAg and HBV DNA levels. J Viral Hepat 2012. [PMID: 22967104 DOI: 10.1111/j.1365-2893.2012.01599] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Quantitative hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg) assays are emerging as effective tools of on-treatment predictors of response to antiviral agents, in addition to monitoring serum HBV DNA levels. However, the dynamic relationship between quantitative HBsAg, as well as HBeAg and HBV DNA, and the predictability of subsequent clinical outcomes during entecavir (ETV) therapy remain unclear. Eighty-two patients with HBeAg-positive chronic hepatitis B (CHB) received ETV therapy for ≥3 years. Virologic response (VR) after 3 years of ETV therapy was achieved in 73 (89.0%) patients. Among baseline and on-treatment factors, on-treatment HBV DNA levels performed better with respect to the prediction of response than HBsAg and HBeAg levels. Especially, the performance of absolute values of HBV DNA with respect to response was superior to HBV DNA decline from the baseline. The best predictive value was an absolute HBV DNA level of 2.3 log(10) IU/mL at month 6 (areas under the curve [AUROC], 0.977; 95% CI, 0.940-1.000; P < 0.001). HBeAg seroconversion after 3 years of therapy was achieved in 26 (31.7%) patients. On-treatment HBeAg levels performed better with respect to the prediction of seroconversion than HBsAg and HBV DNA levels. The best cut-off value for the HBeAg level at month 12 for the prediction of seroconversion was 0.62 log(10) PEIU/mL. Although the HBsAg level at baseline is often used to predict the antiviral potency of entecavir, on-treatment HBV DNA and HBeAg levels are more helpful for prediction of subsequent clinical outcomes in HBeAg-positive CHB patients with entecavir treatment.
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Affiliation(s)
- J W Shin
- Department of Internal Medicine, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea
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Shin JW, Jung SW, Park BR, Kim CJ, Eum JB, Kim BG, Jeong ID, Bang SJ, Lee SH, Kim SR, Park NH. Prediction of response to entecavir therapy in patients with HBeAg-positive chronic hepatitis B based on on-treatment HBsAg, HBeAg and HBV DNA levels. J Viral Hepat 2012; 19:724-31. [PMID: 22967104 DOI: 10.1111/j.1365-2893.2012.01599.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Quantitative hepatitis B surface antigen (HBsAg) and hepatitis B e antigen (HBeAg) assays are emerging as effective tools of on-treatment predictors of response to antiviral agents, in addition to monitoring serum HBV DNA levels. However, the dynamic relationship between quantitative HBsAg, as well as HBeAg and HBV DNA, and the predictability of subsequent clinical outcomes during entecavir (ETV) therapy remain unclear. Eighty-two patients with HBeAg-positive chronic hepatitis B (CHB) received ETV therapy for ≥3 years. Virologic response (VR) after 3 years of ETV therapy was achieved in 73 (89.0%) patients. Among baseline and on-treatment factors, on-treatment HBV DNA levels performed better with respect to the prediction of response than HBsAg and HBeAg levels. Especially, the performance of absolute values of HBV DNA with respect to response was superior to HBV DNA decline from the baseline. The best predictive value was an absolute HBV DNA level of 2.3 log(10) IU/mL at month 6 (areas under the curve [AUROC], 0.977; 95% CI, 0.940-1.000; P < 0.001). HBeAg seroconversion after 3 years of therapy was achieved in 26 (31.7%) patients. On-treatment HBeAg levels performed better with respect to the prediction of seroconversion than HBsAg and HBV DNA levels. The best cut-off value for the HBeAg level at month 12 for the prediction of seroconversion was 0.62 log(10) PEIU/mL. Although the HBsAg level at baseline is often used to predict the antiviral potency of entecavir, on-treatment HBV DNA and HBeAg levels are more helpful for prediction of subsequent clinical outcomes in HBeAg-positive CHB patients with entecavir treatment.
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Affiliation(s)
- J W Shin
- Department of Internal Medicine, University of Ulsan College of Medicine, Ulsan University Hospital, Ulsan, Korea
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Kim SM, Jung EM, An BS, Hwang I, Vo TT, Kim SR, Lee SM, Choi KC, Jeung EB. Additional effects of bisphenol A and paraben on the induction of calbindin-D(9K) and progesterone receptor via an estrogen receptor pathway in rat pituitary GH3 cells. J Physiol Pharmacol 2012; 63:445-455. [PMID: 23211298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 09/25/2012] [Indexed: 06/01/2023]
Abstract
There are concerns about the combined estrogenic effects of chemicals since mixtures of these chemicals exist in our environment. This study investigated potential additional interactions between bisphenol A (BPA) and isobutylparaben (IBP), which are major xenoestrogens used in the manufacture of plastics, cosmetics, drugs, and other products. The combined effects of these two chemicals were analyzed by measuring the expression of calbindin-D(9k) (CaBP-9k) in rat pituitary cancer GH3 cells. GH3 cells were treated with single and combination doses of both chemicals (BPA single doses: 10(-7), 10(-6) and 10(-5) M; IBP single doses: 10(-7), 10(-6) and 10(-5) M, and each of the BPA and IBP doses combined). Prior to treatment, cells were temporarily transfected with a plasmid containing an ERE-luciferase reporter gene. Luciferase activity was measured as an indicator of ER activation by 17β-estradiol (E2), BPA, and IBP. BPA (10(-5) M) combined with IBP (10(-7) M and 10(-6) M) induced a significant increase in the luciferase activity. Twenty-four hours after treatment, dose-dependent effects were observed in both single and combined dose groups, and several combination doses induced significant increases in the expression of CaBP-9k and progesterone receptor (PR) at both transcriptional and translational levels. Pre-treatment with ICI 182,780, a pure estrogen antagonist, significantly reversed BPA- and IBP-induced CaBP-9k and PR upregulation in GH3 cells. Taken together, these results indicate that BPA and IBP may have additionally increased estrogenic potency via an estrogen receptor-mediated pathway.
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Affiliation(s)
- S M Kim
- Laboratory of Veterinary Biochemistry and Molecular Biology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
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Kwak YG, Lee SO, Kim HY, Kim YK, Park ES, Jin HY, Choi HJ, Jeong SY, Kim ES, Ki HK, Kim SR, Lee JY, Hong HK, Kim S, Lee YS, Oh HB, Kim JM. Risk factors for device-associated infection related to organisational characteristics of intensive care units: findings from the Korean Nosocomial Infections Surveillance System. J Hosp Infect 2010; 75:195-9. [PMID: 20434798 DOI: 10.1016/j.jhin.2010.01.014] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2009] [Accepted: 01/13/2010] [Indexed: 10/19/2022]
Abstract
Device-associated infections (DAIs) have been the major causes of morbidity and mortality of patients in intensive care units (ICUs). This study evaluated the risk factors for DAIs in ICUs. Ninety-six medical or surgical ICUs of 56 hospitals participated in the Korean Nosocomial Infections Surveillance System between July 2007 and June 2008. The occurrence of catheter-associated urinary tract infection (CAUTI), central line-associated bloodstream infection (CABSI), and ventilator-associated pneumonia (VAP) were monitored and DAI rates were calculated. Data associated with ICU characteristics were collected and Poisson regression was used for statistical analysis. Rates of CAUTI, CABSI, and VAP were 3.87 per 1000 urinary catheter days, 2.23 per 1000 central line days, and 1.89 per 1000 mechanical ventilator days, respectively. Rates of CAUTI were higher in ICUs in Seoul (P=0.032) and ICUs of major teaching hospitals (P=0.010). The ICUs of university-affiliated hospitals showed lower CAUTI rates (P=0.013). CABSI rates were higher in Seoul (P=0.001) and in medical ICUs (P=0.026). VAP rates were lower in ICUs of hospitals with more than 900 beds compared with hospitals with 400-699 beds (P=0.026). VAP rates were higher in surgical ICUs (P<0.0001) and increased 1.13-fold with each 100-unit increase in beds per infection control professional (P=0.003). The organisational and institutional characteristics of ICUs may influence DAI rates and there is a need for improvement in the incidence of VAP, CAUTI or CABSI.
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Affiliation(s)
- Y G Kwak
- Department of Infectious Diseases, Inje University Ilsan Paik Hospital, Goyang, Republic of Korea
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Park SJ, Lee KS, Kim SR, Min KH, Moon H, Lee MH, Chung CR, Han HJ, Puri KD, Lee YC. Phosphoinositide 3-kinase δ inhibitor suppresses interleukin-17 expression in a murine asthma model. Eur Respir J 2010; 36:1448-59. [PMID: 20351038 DOI: 10.1183/09031936.00106609] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Phosphoinositide 3-kinases (PI3Ks) contribute to the pathogenesis of asthma by regulating the activation of inflammatory mediators, inflammatory cell recruitment and immune cell function. Recent findings have indicated that PI3Ks also regulate the expression of interleukin (IL)-17, which has been recognised as an important cytokine involved in airway inflammation. In the present study, we investigated a role of PI3Kδ in the regulation of IL-17 expression in allergic airway disease using a murine model of asthma. After ovalbumin inhalation, administration of a selective p110δ inhibitor, IC87114, significantly attenuated airway infiltration of total cells, lymphocytes, neutrophils and eosinophils, as well as airway hyperresponsiveness, and attenuated the increase in IL-17 protein and mRNA expression. Moreover, IC87114 reduced levels of IL-4, -5 and -13, expression of keratinocyte chemoattractant protein and mRNA, and nuclear factor (NF)-κB activity. In addition, a NF-κB inhibitor, BAY 11-7085 substantially reduced the increase in IL-17 protein levels. Our results also showed that inhibition of IL-17 activity with an anti-IL-17 antibody remarkably reduced airway inflammation and hyperresponsiveness. These findings suggest that inhibition of the p110δ signalling pathway suppresses IL-17 expression through regulation of NF-κB activity and, thus, has therapeutic potential in asthma.
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Affiliation(s)
- S J Park
- Dept of Internal Medicine, Chonbuk National University Medical School, Deokjin-gu, Jeonju, Jeonbuk 561-180, South Korea
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Lee JM, Kim SR, Yoo SJ, Hong OK, Son HS, Chang SA. The relationship between adipokines, metabolic parameters and insulin resistance in patients with metabolic syndrome and type 2 diabetes. J Int Med Res 2010; 37:1803-12. [PMID: 20146878 DOI: 10.1177/147323000903700616] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study was designed to investigate the relationship between adipokines in metabolic syndrome and insulin resistance. Sixty male and female subjects with or without metabolic syndrome and type 2 diabetes were included. The homeostasis model assessment of insulin resistance (HOMA-IR) was calculated. Compared with lean control subjects, patients with metabolic syndrome and type 2 diabetes had lower circulating levels of total adiponectin and high molecular weight (HMW) adiponectin, and higher levels of leptin and interleukin-6 (IL-6). Total and HMW adiponectin and the adiponectin/leptin (A/L) ratio were negatively correlated with HOMA-IR. After adjusting for age and sex, leptin, IL-6 and tumour necrosis factor-alpha (TNF-alpha) were positively correlated with HOMA-IR. After also adjusting for body mass index, HOMA-IR was found to be independently associated with leptin, A/L ratio and TNF-alpha levels. In conclusion, decreased total adiponectin and HMW adiponectin and increased leptin and IL-6 levels are characteristic of patients with metabolic syndrome and type 2 diabetes.
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Affiliation(s)
- J M Lee
- Department of Internal Medicine, The Catholic University of Korea, College of Medicine, Seoul, Republic of Korea
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Ueno H, Kaniwa N, Okusaka T, Ikeda M, Morizane C, Kondo S, Sugiyama E, Kim SR, Hasegawa R, Saito Y, Yoshida T, Saijo N, Sawada J. Homozygous CDA*3 is a major cause of life-threatening toxicities in gemcitabine-treated Japanese cancer patients. Br J Cancer 2009; 100:870-3. [PMID: 19293806 PMCID: PMC2661788 DOI: 10.1038/sj.bjc.6604971] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Among 242 Japanese pancreatic cancer patients, three patients (1.2%) encountered life-threatening toxicities, including myelosuppression, after gemcitabine-based chemotherapies. Two of them carried homozygous CDA*3 (CDA208G>A [Ala70Thr]), and showed extremely low plasma cytidine deaminase activity and gemcitabine clearance. Our results suggest that homozygous *3 is a major factor causing gemcitabine-mediated severe adverse reactions among the Japanese population.
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Affiliation(s)
- H Ueno
- Hepatobiliary and Pancreatic Oncology Division, National Cancer Center Hospital, 5-1-1 Tsukiji, Chuo-ku, Tokyo 104-0045, Japan.
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Kwack MH, Shin SH, Kim SR, Im SU, Han IS, Kim MK, Kim JC, Sung YK. l-Ascorbic acid 2-phosphate promotes elongation of hair shafts via the secretion of insulin-like growth factor-1 from dermal papilla cells through phosphatidylinositol 3-kinase. Br J Dermatol 2009; 160:1157-62. [PMID: 19416266 DOI: 10.1111/j.1365-2133.2009.09108.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND l-Ascorbic acid 2-phosphate (Asc 2-P), a derivative of l-ascorbic acid, promotes elongation of hair shafts in cultured human hair follicles and induces hair growth in mice. OBJECTIVES To investigate whether the promotion of hair growth by Asc 2-P is mediated by insulin-like growth factor-1 (IGF-1) and, if so, to investigate the mechanism of the Asc 2-P-induced IGF-1 expression. METHODS Dermal papilla (DP) cells were cultured and IGF-1 level was measured by reverse transcription-polymerase chain reaction and enzyme-linked immunosorbent assay after Asc 2-P treatment in the absence or presence of LY294002, a phosphatidylinositol 3-kinase (PI3K) inhibitor. Also, hair shaft elongation in cultured human scalp hair follicles and proliferation of cocultured keratinocytes were examined after Asc 2-P treatment in the absence or presence of neutralizing antibody against IGF-1. In addition, keratinocyte proliferation in cultured hair follicles after Asc 2-P treatment in the absence or presence of LY294002 was examined by Ki-67 immunostaining. RESULTS IGF-1 mRNA in DP cells was upregulated and IGF-1 protein in the conditioned medium of DP cells was significantly increased after treatment with Asc 2-P. Immunohistochemical staining showed that IGF-1 staining is increased in the DP of cultured human hair follicles by Asc 2-P. The neutralizing antibody against IGF-1 significantly suppressed the Asc 2-P-mediated elongation of hair shafts in hair follicle organ culture and significantly attenuated Asc 2-P-induced growth of cocultured keratinocytes. LY294002 significantly attenuated Asc 2-P-inducible IGF-1 expression and proliferation of follicular keratinocytes in cultured hair follicles. CONCLUSIONS These data show that Asc 2-P-inducible IGF-1 from DP cells promotes proliferation of follicular keratinocytes and stimulates hair follicle growth in vitro via PI3K.
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Affiliation(s)
- M H Kwack
- Department of Immunology, Kyungpook National University, Daegu, Korea
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Ko SH, Song KH, Park SA, Kim SR, Cha BY, Son HY, Moon KW, Yoo KD, Park YM, Cho JH, Yoon KH, Ahn YB. Cardiovascular autonomic dysfunction predicts acute ischaemic stroke in patients with Type 2 diabetes mellitus: a 7-year follow-up study. Diabet Med 2008; 25:1171-7. [PMID: 19046195 DOI: 10.1111/j.1464-5491.2008.02567.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
AIMS We investigated whether cardiovascular autonomic neuropathy (CAN) is associated with acute ischaemic stroke in patients with Type 2 diabetes. METHODS From 1999 to 2000, cardiovascular autonomic function tests were conducted in patients with Type 2 diabetes (n = 1458). Patients were followed up between 2006 and 2007. Standard tests for CAN measured heart rate variability parameters [expiration-to-inspiration (E/I) ratio, responses to the Valsalva manoeuvre and standing]. Using the American Diabetes Association criteria, the CAN scores were determined from the results of each test as follows: 0 = normal, 1 = abnormal (total maximum score 3). We assessed the development of acute ischaemic stroke events. RESULTS The prevalence of CAN at baseline was 55.7% (E/I 17.1%, Valsalva 39.4%, posture 27.3%) (n = 1126). During follow-up, 131 patients (11.6%) developed acute ischaemic stroke. The vascular events were more frequent in older patients (P < 0.001) and in those with diabetes of longer duration (P = 0.022), hypertension (P < 0.001) or diabetic retinopathy (P = 0.03) than in patients without vascular events. Patients with ischaemic stroke had higher creatinine levels (P = 0.045) and higher urine albumin excretion (P = 0.025) than those of patients without stroke. Cox proportional hazard regression analysis revealed that the CAN score was associated with the development of acute ischaemic stroke (total score 0 vs. 3, adjusted hazard ratio 2.7, 95% CI 1.3-5.5, P = 0.006). CONCLUSION Cardiovascular autonomic dysfunction was significantly associated with the development of ischaemic stroke in patients with Type 2 diabetes.
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Affiliation(s)
- S H Ko
- Division of Endocrinology and Metabolism, Department of Internal Medicine, The Catholic University of Korea, Seoul, Korea
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Kim SR, Vora N, Jovin TG, Gupta R, Thomas A, Kassam A, Lee K, Gologorsky Y, Jankowitz B, Panapitiya N, Aleu A, Sandhu E, Crago E, Hricik A, Gallek M, Horowitz MB. Anatomic results and complications of stent-assisted coil embolization of intracranial aneurysms. Interv Neuroradiol 2008; 14:267-84. [PMID: 20557724 PMCID: PMC3396013 DOI: 10.1177/159101990801400307] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2008] [Accepted: 07/23/2008] [Indexed: 11/16/2022] Open
Abstract
SUMMARY The purpose of this study was to evaluate and report our anatomic results and complications associated with stent-assisted coil embolization of intracranial aneurysms using the Neuroform stent. From September 2003 to August 2007, 127 consecutive patients (ruptured 50, 39.4%; unruptured 77, 60.6%) underwent 129 stent-assisted coil embolization procedures to treat 136 aneurysms at our institution. Anatomic results at follow-up, procedure-related complications, and morbidity/mortality were retrospectively reviewed. Stent deployment was successful in 128 out of 129 procedures (99.2%). Forty-seven patients presented with 53 procedure-related complications (37.0%, 47/127). Thromboembolic events (n=17, 13.4%) were the most common complications, followed by intraoperative rupture (n=8, 6.3%), coil herniation (n=5, 3.9%), and postoperative rupture (n=4, 3.1%). For thromboembolic events, acute intra-procedural instent thromboses were observed in two patients and subacute or delayed in-stent thromboses in three patients. Overall mortality rate was 16.5% (21/127) and procedure-related morbidity and mortality rates were 5.5% (7/127) and 8.7% (11/127) retrospectively. Patients with poor grade subarachnoid hemorrhage (Hunt and Hess grade IV or V; 25/127, 19.7%) exhibited 56% (14/25) overall mortality rate and 24% (6/25) procedure-related mortality rate. Immediate angiographic results showed complete occlusion in 31.7% of aneurysms, near-complete occlusion in 45.5%, and partial occlusion in 22.8%. Sixty nine patients in 70 procedures with 77 aneurysms underwent angiographic followup at six months or later. Mean follow-up period was 13.7 months (6 to 45 months). Complete occlusion was observed in 57 aneurysms (74.0%) and significant in-stent stenosis was not found. Thromboembolism and intra/postoperative aneurysm ruptures were the most common complications and the main causes of procedure-related morbidity and mortality. Patients with poor grade subarachnoid hemorrhage showed poor clinical outcomes. Since most complications were induced by stent manipulation and deployment, it is mandatory to utilize these devices selectively and cautiously. While the follow- up angiographic results are promising, further studies are essential to evaluate safety, efficacy, and durability of the Neuroform stent.
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Affiliation(s)
- S R Kim
- Department of Neurosurgery, Holy Family Hospital, The Catholic University of Korea, Department of Neurosurgery,Minimally Invasive Endo-Neurosurgery Center, Presbyterian Hospital,University of Pittsburgh Medical Center, U.S.A -
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Kim SR, Bok E, Chung YC, Chung ES, Jin BK. Interactions between CB(1) receptors and TRPV1 channels mediated by 12-HPETE are cytotoxic to mesencephalic dopaminergic neurons. Br J Pharmacol 2008; 155:253-64. [PMID: 18552868 PMCID: PMC2538702 DOI: 10.1038/bjp.2008.246] [Citation(s) in RCA: 24] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2007] [Revised: 02/18/2008] [Accepted: 03/28/2008] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND PURPOSES We recently proposed the existence of neurotoxic interactions between the cannabinoid type 1 (CB(1)) receptor and transient receptor potential vanilloid 1 (TRPV1) channels in rat mesencephalic cultures. This study seeks evidence for the mediator(s) and mechanisms underlying the neurotoxic interactions between CB(1) receptors and TRPV1 in vitro and in vivo. EXPERIMENTAL APPROACH The mediator(s) and mechanism(s) for the interactions between CB(1) receptors and TRPV1 were evaluated by cell viability assays, immunocytochemistry, Fura-2 calcium imaging, mitochondrial morphology assay, ELISA and Western blot assay in vitro in neuron-enriched mesencephalic cultures. Injections into the substantia nigra and subsequent cell counts were also used to confirm these interactions in vivo. KEY RESULTS The neurotoxic interactions were mediated by 12(S)-hydroperoxyeicosatetraenoic acid (12(S)-HPETE), an endogenous TRPV1 agonist. CB(1) receptor agonists (HU210 and WIN55,212-2) increased the level of 12(S)-hydroxyeicosatetraenoic acid (12(S)-HETE), a downstream metabolite of 12(S)-HPETE, which stimulates TRPV1-mediated death of mesencephalic neurons, both in vitro and in vivo. The neurotoxicity was mediated by increased intracellular Ca(2+) concentration ([Ca(2+)](i)) through TRPV1, consequently leading to mitochondrial damage and was attenuated by baicalein, a 12-lipoxygenase inhibitor. CONCLUSION AND IMPLICATIONS Activation of CB(1) receptors in rat mesencephalic neurons was associated with biosynthesis of 12(S)-HPETE, which in turn stimulated TRPV1 activity, leading to increased [Ca(2+)](i), mitochondrial damage and neuronal death.
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Affiliation(s)
- S R Kim
- Brain Disease Research Center, Ajou University School of Medicine Suwon, Korea
| | - E Bok
- Brain Disease Research Center, Ajou University School of Medicine Suwon, Korea
- Neuroscience Graduate Program, Ajou University School of Medicine Suwon, Korea
- Division of Cell Transformation and Restoration, Ajou University School of Medicine Suwon, Korea
| | - Y C Chung
- Brain Disease Research Center, Ajou University School of Medicine Suwon, Korea
- Neuroscience Graduate Program, Ajou University School of Medicine Suwon, Korea
- Division of Cell Transformation and Restoration, Ajou University School of Medicine Suwon, Korea
| | - E S Chung
- Brain Disease Research Center, Ajou University School of Medicine Suwon, Korea
- Division of Cell Transformation and Restoration, Ajou University School of Medicine Suwon, Korea
| | - B K Jin
- Brain Disease Research Center, Ajou University School of Medicine Suwon, Korea
- Neuroscience Graduate Program, Ajou University School of Medicine Suwon, Korea
- Division of Cell Transformation and Restoration, Ajou University School of Medicine Suwon, Korea
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Kim YK, Jun IG, Kim SR, Hwang JH, Cho SK, Han SM, Hwang GS. Using 100% Oxygen does not Alter the Cardiovascular Autonomic Regulation during Non-invasively Simulated Haemorrhage in Healthy Volunteers. J Int Med Res 2008; 36:227-236. [DOI: 10.1177/147323000803600203] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
We tested the effect of 100% oxygen on heart rate (HR), arterial blood pressure (ABP), cardiac output (CO), stroke volume (SV), total peripheral resistance (TPR), HR variability (HRV), systolic blood pressure variability (SBPV) and baroreflex sensitivity (BRS) in 20 healthy volunteers during simulated haemorrhage induced by −40 mmHg lower body negative pressure (LBNP). HRV in the high frequency region (HRVHF), BRS, ABP and TPR were significantly increased, SBPV in the low frequency region (SBPVLF), CO and SV were unchanged, and HR was significantly decreased by 100% oxygen administration during normovolaemia. HRVHF, BRS, CO and SV were significantly decreased, SBPVLF and ABP were unchanged, and HR and TPR were significantly increased by LBNP during 21% or 100% oxygen administration. There were no significant differences in cardiovascular autonomic and haemodynamic responses to LBNP during 21% or 100% oxygen administration, suggesting that 100% oxygen does not alter normal cardiovascular autonomic responses during simulated haemorrhage.
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Affiliation(s)
- YK Kim
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - IG Jun
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - SR Kim
- Department of Obstetrics and Gynaecology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - JH Hwang
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - SK Cho
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - SM Han
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
| | - GS Hwang
- Department of Anaesthesiology and Pain Medicine, Asan Medical Centre, University of Ulsan College of Medicine, Seoul, Korea
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Kim SR, Kim CH, Kim SH, Chae HD, Kang BM. EC-001 Clinical and laboratory characteristics of precocious puberty in girls. Reprod Biomed Online 2008. [DOI: 10.1016/s1472-6483(10)61564-7] [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: 11/28/2022]
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Lee KS, Park SJ, Kim SR, Min KH, Lee KY, Choe YH, Hong SH, Lee YR, Kim JS, Hong SJ, Lee YC. Inhibition of VEGF blocks TGF-beta1 production through a PI3K/Akt signalling pathway. Eur Respir J 2007; 31:523-31. [PMID: 18057050 DOI: 10.1183/09031936.00125007] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Vascular endothelial growth factor (VEGF) is a mediator of airway inflammation and remodelling in asthma. Transforming growth factor (TGF)-beta(1) plays pivotal roles in diverse biological processes, including tissue remodelling and repair in a number of chronic lung diseases. However, there are few studies elucidating the interactions between VEGF and TGF-beta(1) in allergic airway disease. A murine model of allergic airway disease was used to define the mechanism by which VEGF induces subepithelial fibrosis and to investigate a potential relationship between VEGF and TGF-beta(1) and the mechanisms by which VEGF signalling regulates TGF-beta(1) expression in allergic airway disease. The ovalbumin (OVA)-inhaled murine model revealed the following typical pathophysiological features of allergic airway disease in the lungs: increased numbers of inflammatory cells of the airways, airway hyperresponsiveness, increased peribronchial fibrosis, and increased levels of VEGF and TGF-beta(1). Administration of VEGF inhibitors reduced the pathophysiological signs of allergic airway disease and decreased the increased TGF-beta(1) levels and peribronchial fibrosis, including phosphoinositide 3-kinase (PI3K) activity after OVA inhalation. In addition, the increased TGF-beta(1) levels and collagen deposition after OVA inhalation were decreased by administration of PI3K inhibitors. These results suggest that inhibition of vascular endothelial growth factor attenuates peribronchial fibrosis, at least when mediated by regulation of transforming growth factor-beta(1) expression through phosphoinositide 3-kinase/Akt pathway in a murine model of allergic airway disease.
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Affiliation(s)
- K S Lee
- Dept of Internal Medicine, Chonbuk National University Medical School, San 2-20 Geumam-dong, Deokjin-gu, Jeonju, Jeonbuk 561-180, South Korea.
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Abstract
This study was designed to determine the accuracy and agreement of a self-collection method using pad for human papillomavirus (HPV) DNA. One hundred and thirty-four patients at university hospitals voluntarily participated in the accuracy study, and 314 volunteers participated in the agreement study at local clinics. DNA was extracted and amplified using HPV L1 consensus primers designed for the direct sequencing. In the accuracy study, all samples were probed via histological examinations. With regard to the detection of squamous intraepithelial lesion (SIL), self-collection pad sampling displays sensitivity, of 76.9%, and specificity, of 93.3%. Three hundred and fourteen self-collection pad samples and the concurrent physicians' samples showed a 97.8% agreement, with a Kappa value of 0.9200. A new self-collection pad for the detection of HPV DNA appears to constitute an easy, rapid, and convenient alternative method for the cervical cancer screening of many women with the virtue of being incredible readily accessible.
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Affiliation(s)
- S R Kim
- Medplan Pathology Laboratory Center, Seoul, Republic of Korea
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Kobayashi S, Takeda T, Enomoto M, Tamori A, Kawada N, Habu D, Sakaguchi H, Kuroda T, Kioka K, Kim SR, Kanno T, Ueda T, Hirano M, Fujimoto S, Jomura H, Nishiguchi S, Seki S. Development of hepatocellular carcinoma in patients with chronic hepatitis C who had a sustained virological response to interferon therapy: a multicenter, retrospective cohort study of 1124 patients. Liver Int 2007; 27:186-91. [PMID: 17311612 DOI: 10.1111/j.1478-3231.2006.01406.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Interferon (IFN) improves hepatic inflammation/fibrosis and reduces the risk of hepatocellular carcinoma (HCC) in patients with chronic hepatitis C (CH-C). However, HCC develops in some patients who have a sustained virological response (SVR) to IFN therapy. We designed this study to establish a follow-up protocol for patients with CH-C who have SVR to IFN therapy. METHODS We retrospectively studied 1124 patients with CH-C who received IFN. RESULTS HCC developed in 3.5% of patients with SVR to IFN. As compared with SVR patients without HCC, SVR patients with HCC were predominantly male (P=0.003), older at the initiation of IFN therapy (P=0.002), and at a more advanced histologic stage of disease (P<0.001). However, three of the 13 SVR HCC patients had mild fibrosis. The mean interval from IFN therapy to the detection of HCC in SVR HCC patients was 5.8 years and did not differ significantly from that in non-SVR HCC patients (P=0.304). Although most patients with HCC received curative therapy, the prognosis of some SVR HCC patients was poor, probably because of insufficient follow-up, resulting in delayed detection of HCC. CONCLUSIONS SVR patients with CH-C who are elderly, male, or have an advanced histologic stage are at a high risk for the development of HCC after IFN therapy. We recommend that SVR patients should be observed carefully for more than 10 years after the completion of IFN therapy, even if they only have early fibrosis.
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Affiliation(s)
- S Kobayashi
- Department of Hepatology, Graduate School of Medicine, Osaka City University, Osaka, Japan
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Abstract
OBJECTIVE Technological advances in ultrasonography have revolutionized prenatal diagnosis and treatment. Here we evaluate the effectiveness of using four-dimensional (4D) ultrasonography to guide prenatal invasive procedures. PATIENTS AND METHODS Prenatal invasive procedures using 4D ultrasound were recorded prospectively in 93 cases: 10 amnioinfusions, 50 amniocenteses, 8 chorionic villus samplings (CVS) and 25 cordocenteses. The needle target site was first identified using the two-dimensional (2D) mode, and was then confirmed using the three-dimensional (3D) mode. The needle was inserted under 4D ultrasound guidance. After selecting the needle target site, the true position of the needle was determined in three planes ('real-time 3D targeting'). RESULTS Using 4D ultrasound guidance, most procedures were performed within 5 min and with a 100% success rate, even in cases involving severe oligohydramnios (amniocentesis), thin placentas (CVS) or narrow umbilical veins (cordocentesis). Moreover, there were no serious complications during or after any procedure. CONCLUSIONS 4D ultrasonography can be used to guide various prenatal invasive procedures offering clear information in all three planes. It is likely that such imaging will reduce the time taken to complete the procedures and reduce the risks associated with them. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- S R Kim
- Department of Obstetrics and Gynecology, University of Ulsan College of Medicine, Asan Medical Center, Seoul, Korea
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Kim KI, Sasase N, Taniguchi M, Mita K, Kinoshita K, Togitani T, Shikata M, Kimura N, Izawa S, Ohtani A, Nakao K, Muramoto Y, Kim SR, Nabeshima S, Ishii F, Tanaka K, Hayashi Y. Interferon-beta induction/interferon-alpha2b plus ribavirin therapy in patients with chronic hepatitis C. Int J Clin Pharmacol Res 2005; 25:71-6. [PMID: 16060397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Treatment of chronic hepatitis C virus (HCV) infection with interferon (IFN) and ribavirin improves the rate of eradication of the virus by less than 20% in patients with genotype 1b and a high viral load. In this study we assessed whether IFN-beta induction/IFN-alpha2b plus ribavirin enhances the efficacy of the therapy in patients with chronic hepatitis C. The efficacy of IFN-beta induction/IFN-alpha2b plus ribavirin therapy (group A, n=7) was compared with that of IFN-alpha2b plus ribavirin (group B, n=7) in 14 patients with high levels of HCV-RNA (> 100 K/U/ml). No significant differences were observed in the clearance of HCV-RNA between the two groups (A and B, respectively) 2 weeks after the start of the treatment (0% and 14.3%), at the end of the treatment (71.4% and 100%) and 6 months after the end of the treatment (28.6% and 14.3%). Recovery was complete in 28.6% and 14.3%, transient in 42.9% and 85.7% and absent in 28.6% and 0% in groups A and B, respectively. Early log changes in the viral load from the baseline after 2 weeks of treatment were 2.41 +/- 0.91 and 2.77 +/- 0.20 in groups A and B, respectively, with no significant difference between the two groups. In the present study, we were not able to demonstrate that IFN-beta induction/IFN-alpha2b plus ribavirin therapy was superior to IFN-alpha2b plus ribavirin therapy in patients with genotype 1b and high viral loads.
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Affiliation(s)
- K I Kim
- Division of Molecular Medicine & Medical Genetics, International Center for Medical Research and Treatment, Kobe University Graduate School of Medicine, Kobe, Japan
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Abstract
A physiological signal-based emotion recognition system is reported. The system was developed to operate as a user-independent system, based on physiological signal databases obtained from multiple subjects. The input signals were electrocardiogram, skin temperature variation and electrodermal activity, all of which were acquired without much discomfort from the body surface, and can reflect the influence of emotion on the autonomic nervous system. The system consisted of preprocessing, feature extraction and pattern classification stages. Preprocessing and feature extraction methods were devised so that emotion-specific characteristics could be extracted from short-segment signals. Although the features were carefully extracted, their distribution formed a classification problem, with large overlap among clusters and large variance within clusters. A support vector machine was adopted as a pattern classifier to resolve this difficulty. Correct-classification ratios for 50 subjects were 78.4% and 61.8%, for the recognition of three and four categories, respectively.
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Affiliation(s)
- K H Kim
- Department of Biomedical Engineering, College of Health Science, Yonsei University, South Korea.
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Abstract
Pathologic characteristics of the prostatic adenocarcinoma in Koreans are not clear. We studied 132 cases of prostatectomy specimens using mapping analysis to discover the pathologic characteristics of the Korean prostatic adenocarcinoma. Mean values were as follows: serum prostate-specific antigen level (sPSA), 16.4 ng/ml; tumor volume, 27.5%; size, 2.4 cm; Gleason score, 7.7; and p53 expression, 9.8%. Rates of multifocal tumors and high-grade prostatic intraepithelial neoplasm (HPIN) were 33.3 and 65.2%. The Gleason score, tumor volume%, tumor size and sPSA were correlated with each other. Korean prostatic adenocarcinomas showed higher Gleason scores, lower rates of HPIN and multifocality, and lower p53 expression in comparison to Western prostatic adenocarcinomas. These data may be a basis for pathologic characteristics of Korean prostatic adenocarcinoma that has now been increasing.
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Affiliation(s)
- S Y Song
- Department of Pathology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, Korea.
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