• Tuberculosis and Respiratory Diseases
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• 제59권5호
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• pp.510-516
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• 2005

배 경 : 새로운 항암제의 사용으로 비소세포 폐암에서 1차 항암 치료의 효과는 많이 향상 되었지만 많은 환자에서 치료 중 혹은 치료 후에 폐암이 진행하거나 재발되고 있다. 최근 환자의 체력 및 영양 상태의 향상으로 폐암의 진행 및 재발 후에도 신체 수행 상태(performance status)가 양호하여 2차 항암 치료의 대상 환자가 늘어나는 추세이다. 그러나 아직까지 표준화된 2차 항암 치료가 없는 실정으로 gemcitabine과 vinorelbine의 병합 요법은 비교적 다른 기전의 독성을 보여 병합 요법으로서의 가능성을 높여 주었다. 이에 저자들은 1차 항암 요법에 반응을 보이지 않거나 재발한 진행성 비소세포 폐암 환자를 대상으로 gemcitabine과 vinorelbine 병합 요법을 시행하여 치료 반응율, 생존율 및 독성에 대해 연구하였다. 대상 및 방법 : 2000년 12월부터 2003년 7월까지 고려대학교 의료원에 내원하여 비소세포 폐암으로 확진 받은 환자 중 진단 당시 IIIB, IV병기로 platinum을 기반으로 docetaxel 혹은 paclitaxel의 2제 복합 항암 요법을 1차 치료로 시행한 환자 중 진행하거나 재발한 환자들을 대상으로 gemcitabine과 vinorelbine 병합 요법의 치료 반응율, 생존율 및 독성을 분석하였다. 결 과 : Vinorelbine과 gemcitabine 병합 항암화학 요법은 총 215회가 시행 되었고, 환자당 시행된 평균값은 3.6회였다. 주요 반응에 해당하는 관해율은 10%였다. 1년 생존율은 32.9% 였으며, 생존 중앙값은 10.1개월이었다. 관해 지속 기간 중앙값은 3.8개월이었다. 대부분에서 경도의 오심과 구토, 탈모증이 관찰되었으며 WHO grade 3의 오심, 구토는 2예(3%)였으며, grade 4의 오심, 구토는 없었다. Grade 3 백혈구 감소가 33.3%, grade 4가 11.7%로 비교적 흔히 발생하였다. 호중구 감소가 동반된 폐렴으로 사망이 1예 보고되었다. 결 론 : Platinum을 기반으로 하는 1차 항암 치료 후 재발하거나 진행한 비소세포 폐암 환자에서 gemcitabine과 vinorelbine 병합 항암 요법은 비교적 효과적이고 안전한 항암 치료법으로 사료된다.

• Food Science and Biotechnology
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• 제17권4호
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• pp.865-869
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• 2008

Effects of chitosan coating on respiration rate and internal gas composition of 'Fuji' apple and 'Satsuma' mandarin were investigated and compared to wax emulsions and two commercial coating materials. Chitosan coating reduced respiration rate significantly (p<0.05) in 'Fuji' apple and 'Satsuma' mandarin compared to uncoated and other coating materials. Chitosan coating on 'Fuji' apple showed the highest $CO_2$ and the lowest $O_2$ concentration in the internal gas composition at $5^{\circ}C$ but showed no differences compared to other coating materials at $20^{\circ}C$. 'Satsuma' mandarin showed significantly high $CO_2$ concentration in chitosan coating at $20^{\circ}C$ but there were not significant differences among coating materials in $CO_2$ and $O_2$ composition at $5^{\circ}C$.

• Tuberculosis and Respiratory Diseases
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• 제83권2호
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• pp.141-146
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• 2020

Background: The burden of nontuberculous mycobacterial (NTM) pulmonary disease (PD) is increasing globally. To understand the treatment outcomes and prognosis of NTM-PD, a unified registry is needed. In this project, we aim to construct a multicenter prospective observational cohort with NTM-PD in South Korea (NTM-KOREA). Methods: The primary objective of this study is to analyze treatment outcomes according to the species. In addition, recurrence rate, adverse events, the impact of each drug on treatment outcomes as well as the impact of characteristics of mycobacteriology will be analyzed. The inclusion criteria for the study are as follows: fulfilling the criteria for NTM-PD having one of the following etiologic organisms: Mycobacterium avium complex, M. abscessus subspecies abscessus, M. abscessus subspecies massiliense, or M. kansasii; receiving the first treatment for NTM-PD after enrollment; age >20 years; and consenting to participate in the study. Seven institutions will participate in patient enrollment and about 500 patients are expected to be enrolled. Participants will be recruited from 1 March 2020 until 19 March 2024 and will be observed through 19 March 2029. During the follow-up period, participants' clinical course will be tracked and their clinical data as well as NTM isolates will be collected. Conclusion: NTM-KOREA will be the first nationwide observational cohort for NTM-PD in South Korea. It will provide the information to optimize treatment modalities and will contribute to deeper understanding of the treatment outcomes and long-term prognosis of patients with NTM-PD in South Korea.

• Korean Circulation Journal
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• 제53권4호
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• pp.254-267
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• 2023

Background and Objectives: Although the shortage of donor is a common problem worldwide, a significant portion of unutilized hearts are classified as marginal donor (MD) hearts. However, research on the correlation between the MD and the prognosis of heart transplantation (HTx) is lacking. This study was conducted to investigate the clinical impact of MD in HTx. Methods: Consecutive 73 HTxs during 2014 and 2021 in a tertiary hospital were analyzed. MD was defined as follows; a donor age >55 years, left ventricular ejection fraction <50%, cold ischemic time >240 minutes, or significant cardiac structural problems. Preoperative characteristics and postoperative hemodynamic data, primary graft dysfunction (PGD), and the survival rate were analyzed. Risk stratification by Index for Mortality Prediction after Cardiac Transplantation (IMPACT) score was performed to examine the outcomes according to the recipient state. Each group was sub-divided into 2 risk groups according to the IMPACT score (low <10 vs. high ≥10). Results: A total of 32 (43.8%) patients received an organ from MDs. Extracorporeal membrane oxygenation was more frequent in the non-MD group (34.4% vs. 70.7, p=0.007) There was no significant difference in PGD, 30-day mortality and long-term survival between groups. In the subgroup analysis, early outcomes did not differ between low- and high-risk groups. However, the long-term survival was better in the low-risk group (p=0.01). Conclusions: The outcomes of MD group were not significantly different from non-MD group. Particularly, in low-risk recipient, the MD group showed excellent early and long-term outcomes. These results suggest the usability of selected MD hearts without increasing adverse events.

• 한국재료학회지
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• 제13권8호
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• pp.491-496
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• 2003

Fe-Ni alloy nanoparticles were prepared by ERC (Evaporation and Rapid Condensation) method, and the crystal structure and the behavior of martensite for the nanosized alloy particles were investigated by X-ray diffraction analysis. The relation between the rate of martensite transformation and the internal strain of austenite was discussed. The lattice spaces of austenite and martensite for the nanoparticles agreed with those of the bulk materials. The rate of martensite transformation from austenite and the internal strain of austenite was reduced with decreasing the average size of Fe-Ni nanoparticles. It was thought that the residual austenite in the Ni content range of 11∼l5at% was caused by the internal strain, and the residual martensite in the Ni content range of 32∼36at% had its origin in the high surface energy of nanoparticles.

• Tuberculosis and Respiratory Diseases
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• 제75권1호
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• pp.18-24
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• 2013

Background: We investigated the prevalence of latent tuberculosis infection (LTBI) among the health care workers (HCWs) and analyzed its risk factors in South Korea. Methods: A standard questionnaire regarding the baseline demographics and risk factors for LTBI was given to each participant and tuberculin skin test (TST), QuantiFERON-TB GOLD In-Tube (QFT-GIT) assay, and chest radiography were performed. Results: A total of 493 participants, 152 (30.8%) doctors and 341 (69.2%) nurses were enrolled in eight tertiary referral hospitals. The mean age of the subjects was 30.6 years old, and 383 (77.7%) were female. Of the 152 doctors, 63 (41.4%) and 36 (23.7%) were positive by TST and by QTF-GIT, respectively, and among the 341 nurses, 119 (34.9%) and 49 (14.4%) had positive TST and QFT-GIT results, respectively. Overall, the agreement between the two tests was 0.22 by the chance corrected proportional agreement rate (kappa coefficient) in 493 subjects. Experience of working in tuberculosis (TB)-related departments was significantly associated with positive LTBI test results by QFT-GIT assay, not by TST. In multivariate analysis, only age was independently associated with increased risk of a positive TST result, while age and experience of working in TB-related departments (odds ratio, 2.29; 95% confidence interval, 1.01-5.12) were independently associated with increased risk of a positive QFT-GIT result. Conclusion: A high prevalence of LTBI was found among South Korean HCWs. Considering the association between the experience of working in TB-related departments and high risk of LTBI, QFT-GIT may be a better diagnostic test for LTBI than TST in HCWs.

• 대한한방내과학회지
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• 제41권4호
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• pp.583-598
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• 2020

Objective: The aims of this study were to analyze deficiency-excess pattern identification and to compare the blood cytokines in patients with asthma. Methods: A total of 112 patients with asthma who met the inclusion and exclusion criteria were divided into deficiency syndrome and excess syndrome groups. Blood was examined for eotaxin, interleukin (IL)-1β, IL-4, IL-5, IL-6, IL-13, and tumor necrosis factor (TNF)-α. The Quality of Life Questionnaire for Adult Korean Asthmatics (QLQAKA), a Visual Analogue Scale (VAS), and heart rate variability (HRV) tests were administered to both groups. Results: Pattern identification divided the 112 patients into two categories: a deficiency syndrome group (N=52) and an excess syndrome group (N=60). Analysis of blood cytokines showed higher levels of IL-4, IL-5, and IL-13 in the deficient pattern than in the excess pattern group, but the difference was not statistically significant. Analysis of the HRV revealed a significantly higher mean value for the very-low-frequency (VLF) and high-frequency (HF) bands in the deficiency than in the excess syndrome group. The morbidity duration was longer in the deficiency than in the excess syndrome group, but the difference was not statistically significant. Analysis of the QLQAKA and VAS scores showed a negative correlation, whereas BMI and VAS showed a positive correlation. Conclusions: Levels of blood cytokines, including eotaxin, IL-1β, IL-4, IL-5, IL-6, IL-13, and TNF-α, did not differ statistically between the deficiency and excess syndrome groups. The development of a more accurate asthma-specific pattern identification tool would be useful in asthma control.

• Tuberculosis and Respiratory Diseases
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• 제56권6호
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• pp.670-676
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• 2004

유독성 물질의 흡인은 화학성 폐렴을 유발하며 이는 직업성 폐질환의 한 원인이다. 질산은 흔한 대기 오염물질의 한가지이고 작업장에서 사용되는 강력한 산화제로 직업적 노출의 가능성이 있다. 52세 남자 환자가 질산을 이용한 에어컨 도관 세척작업 중에 발생한 증기의 흡입 후 기침, 호흡곤란을 호소하며 병원에 방문하였다. 내원 당시 호흡수 분당 26회였고, 산소 투여 없이 시행한 동맥혈 가스분석에서 $PaO_2$ 42.6 mmHg, $SaO_2$ 80.2%로 저산소혈증이 나타났으며, 흉부 방사선 검사에서 양측폐야에 미만성 폐침윤과 젖빛유리 음영이 나타났다. 환자는 전신적인 스테로이드를 사용하지 않고, 보존적인 치료만으로 입원 2일째부터 임상적인 증상과 방사선 사진의 호전이 있었고 퇴원 후 폐기능의 손상 없이 호전되었기에 이를 보고하는 바이다.

• Journal of Yeungnam Medical Science
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• 제31권2호
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• pp.82-88
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• 2014

Background: Lung cancer is the most common cause of cancer-related death worldwide and in Korea, and small cell lung cancer (SCLC) is the most deadly tumor type in the different lung cancer histology. Chemotherapy is the main strategy of the treatment for SCLC, and etoposide and platinum regimen has been the only standard chemotherapy for about 30 years. To test feasibility of weekly divided dose irinotecan and carboplatin for Korean patients is the aim of this study. Methods: Patients with histologically or cytologically confirmed extensive stage SCLC were included. Patients with limited stage (LD), who could not tolerate concurrent chemoradiotherapy were also included. All the patients received irinotecan $60mg/m^2$, carboplatin 2 area under the curve at day 1, 8, and 15 every 4 weeks. Study regimen was discontinued when the disease progressed or intolerable side effects occurred. No more than 6 cycles of chemotherapy were given. Results: Total 47 patients were enrolled, among them 9 patients were LD. Overall response rate was 74.5% (complete response, 14.9%; partial response, 59.6%). Side effects greater than grade 3 were neutropenia (25.5%), fatigue (12.8%), thrombocytopenia (8.5%), sepsis (4.3%), and pancytopenia (2.1%). There was no treatment related death. Conclusion: Weekly divided irinotecan and carboplatin regimen is effective, and safe as a first line therapy for both stage of SCLC. Large scaled, controlled study is feasible.

• Tuberculosis and Respiratory Diseases
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• 제86권2호
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• pp.133-141
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• 2023

Background: The present study evaluated the association between participation in a rehabilitation program during a hospital stay and 1-year survival of patients requiring at least 21 days of mechanical ventilation (prolonged mechanical ventilation [PMV]) with various respiratory diseases as their main diagnoses that led to mechanical ventilation. Methods: Retrospective data of 105 patients (71.4% male, mean age 70.1±11.3 years) who received PMV in the past 5 years were analyzed. Rehabilitation included physiotherapy, physical rehabilitation, and dysphagia treatment program that was individually provided by physiatrists. Results: The main diagnosis leading to mechanical ventilation was pneumonia (n=101, 96.2%) and the 1-year survival rate was 33.3% (n=35). One-year survivors had lower Acute Physiology and Chronic Health Evaluation (APACHE) II score (20.2±5.8 vs. 24.2±7.5, p=0.006) and Sequential Organ Failure Assessment score (6.7±5.6 vs. 8.5±2.7, p=0.001) on the day of intubation than non-survivors. More survivors participated in a rehabilitation program during their hospital stays (88.6% vs. 57.1%, p=0.001). The rehabilitation program was an independent factor for 1-year survival based on the Cox proportional hazard model (hazard ratio, 3.513; 95% confidence interval, 1.785 to 6.930; p<0.001) in patients with APACHE II scores ≤23 (a cutoff value based on Youden's index). Conclusion: Our study showed that participation in a rehabilitation program during hospital stay was associated with an improvement of 1-year survival of PMV patients who had less severe illness on the day of intubation.