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( Hyeon-kyoung Koo ),( Hyung Koo Kang ),( Pamela Song ),( Hye Kyeong Park ),( Sung-soon Lee ),( Hoon Jung ) 대한결핵 및 호흡기학회 2017 Tuberculosis and Respiratory Diseases Vol.80 No.3
Background: Chronic obstructive pulmonary disease (COPD), is a chronic inflammatory disorder. We evaluated whether white blood cell (WBC) count, is associated with the severity of COPD, independent of other inflammatory conditions, such as metabolic syndrome. Methods: The WBC counts were compared between 1227 COPD patients and 8679 non-COPD adults older than 40. The relationships between the WBC count, lung function, and symptoms score in COPD patients, were determined, using general linear regression analyses. Results: The WBC count was negatively associated with forced vital capacity (FVC, L), FVC (% predicted), forced expiry volume in one second (FEV1, L), and FEV1 (% predicted) in COPD patients. Additionally, the WBC count was independently associated with the quality of life measure, by EQ5D-index score. However, this relationship between WBC count, and disease severity, was not significant in current smokers, because of the confounding effect of smoking, on the WBC count. Conclusion: The WBC count is associated with current smoking status and COPD severity, and a risk factor for poor lung function, and quality of life, especially in non-currently smoking COPD patients. The WBC count can be used, as an easily measurable COPD biomarker.
Koo, Hyeon-Kyoung,Yoo, Chul-Gyu The Korean Academy of Tuberculosis and Respiratory 2013 Tuberculosis and Respiratory Diseases Vol.74 No.3
A lung cyst is an air-filled lucent structure surrounded by a thin wall. The presence of multiple intrapulmonary cysts is defined as cystic lung disease. Although cystic lung disease is rare, incidental detection has increased significantly in recent years by screening using computed tomography. There are many conditions that can mimic lung cysts and cause cystic lung disease. Clinical, radiographic, and histologic findings are all necessary for a proper diagnosis, and multidisciplinary approaches are frequently required. The aim of this report is to review the causes and characteristics of cystic lung disease to better understand and improve treatment.
Koo, Hyeon-Kyoung,Kang, Hyung Koo,Song, Pamela,Park, Hye Kyeong,Lee, Sung-Soon,Jung, Hoon The Korean Academy of Tuberculosis and Respiratory 2017 Tuberculosis and Respiratory Diseases Vol.80 No.3
Background: Chronic obstructive pulmonary disease (COPD), is a chronic inflammatory disorder. We evaluated whether white blood cell (WBC) count, is associated with the severity of COPD, independent of other inflammatory conditions, such as metabolic syndrome. Methods: The WBC counts were compared between 1227 COPD patients and 8679 non-COPD adults older than 40. The relationships between the WBC count, lung function, and symptoms score in COPD patients, were determined, using general linear regression analyses. Results: The WBC count was negatively associated with forced vital capacity (FVC, L), FVC (% predicted), forced expiry volume in one second ($FEV_1$, L), and $FEV_1$ (% predicted) in COPD patients. Additionally, the WBC count was independently associated with the quality of life measure, by EQ5D-index score. However, this relationship between WBC count, and disease severity, was not significant in current smokers, because of the confounding effect of smoking, on the WBC count. Conclusion: The WBC count is associated with current smoking status and COPD severity, and a risk factor for poor lung function, and quality of life, especially in non-currently smoking COPD patients. The WBC count can be used, as an easily measurable COPD biomarker.
Hyeon Kyoung Koo,Chul Gyu Yoo 대한결핵 및 호흡기학회 2013 Tuberculosis and Respiratory Diseases Vol.74 No.3
A lung cyst is an air-filled lucent structure surrounded by a thin wall. The presence of multiple intrapulmonary cysts is defined as cystic lung disease. Although cystic lung disease is rare, incidental detection has increased significantly in recent years by screening using computed tomography. There are many conditions that can mimic lung cysts and cause cystic lung disease. Clinical, radiographic, and histologic findings are all necessary for a proper diagnosis, and multidisciplinary approaches are frequently required. The aim of this report is to review the causes and characteristics of cystic lung disease to better understand and improve treatment.
구현경 ( Hyeon Kyoung Koo ),김서윤 ( Seo Yun Kim ),박성수 ( Sung Soo Park ),이연주 ( Yeon Joo Lee ),이지연 ( Ji Yeon Lee ),정진행 ( Jin Haeng Chung ),이재호 ( Jae Ho Lee ),이춘택 ( Choon Taek Lee ),윤호일 ( Ho Il Yoon ) 대한결핵 및 호흡기학회 2010 Tuberculosis and Respiratory Diseases Vol.69 No.3
Nodular lymphoid hyperplasia is a very rare benign disease and usually shows consolidation on chest X-ray with symptoms of pneumonia due to the proliferation of lymphoid cells in the lung parenchyma. It is common for patients to be diagnosed with pneumonia and treated with antibiotics, but patients often enter a cycle of repeated improvement, followed by aggravation of symptoms. At this point, surgical diagnostic tools are considered in order to differentiate between malignant disease and interstitial lung disease. Here, we report 2 cases of patients with nodular lymphoid hyperplasia and review the associated references.
Identification of molecular mechanism controlling P34 gene expression in soybean
Koo, Sung Cheol,Seo, Jun Su,Park, Min Jung,Cho, Hyun Min,Park, Mi Suk,Choi, Cheol Woo,Jung, Wook-Hun,Lee, Kyoung Hee,Jin, Byung Jun,Kim, Seok Hyeon,Shim, Sang In,Chung, Jung-Sung,Chung, Jong Il,Kim, M 한국식물생명공학회 2013 Plant biotechnology reports Vol.7 No.3
P34 has long been known as one of major allergenic proteins in soybean. Recently, two low-P34 soybean accessions, PI603570A and PI567476, were identified. In order to understand the molecular mechanism of a significant reduction of P34 protein level in PI567476, we performed comparative analysis of the P34 cDNAs and genomic sequences from low-P34 and normal soybean accessions. While no sequence variation was detected in P34 coding regions of the soybean accessions tested, the P34 gene from PI567476 contains 'ATGT' 4-bp insertion in front of the start codon. We also found the length polymorphism of 'TA' repeats in the P34 promoter regions among accessions. Northern and western blot analysis revealed that, even though mRNA levels of P34 are similar in low-P34 and normal soybean accessions, lower accumulation of P34 protein is only detected in the low-P34 accession, suggesting that the genetic polymorphisms in P34 promoters have a more significant effect on translation efficiency than transcription of the P34 gene. Transient expression analysis showed that the P34 promoter of PI567476 has significantly reduced activity compared to that of normal accession, cv. Clark. In addition, the chimeric promoter generated by introducing the 4-bp insertion in front of the start codon of the P34 gene from normal Clark accession showed markedly reduced activity. The results suggest that lower accumulation of P34 protein in low-P34 accession is largely due to the reduced translation efficiency caused by the 4-bp insertion in the P34 promoter, thus providing direct evidence for the molecular mechanism to explain the regulation of P34 gene expression in various soybean accessions.