• 대한한의학회지
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• 제42권3호
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• pp.56-71
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• 2021

Objectives: This study is aimed to evaluate the protective effects of GGX on lung injury of Chronic Obstructive Lung Disease (COPD) mice model. Materials and Methods: C57BL/6 mice were challenged with lipopolysaccharide (LPS) and cigarette smoke extract (CSE) and then treated with vehicle only (Control group), dexamethasone 3 mg/kg (Dexa group), gam-gil-tang 200 mg/kg (GGT group), GGX 100, 200, and 400 mg/kg (GGX group). After sacrifice, its bronchoalveolar lavage fluid (BALF) or lung tissue was analyzed with cytospin, Enzyme-Linked Immunosorbent Assay (ELISA), real-time polymerase chain reaction (PCR) and hematoxylin & eosin (H&E), and Masson's trichrome staining. Results: In the COPD model, GGX significantly inhibited the increase of neutrophils, TNF-𝛼, IL-17A, CXCL-1, MIP2 in BALF and TNF-𝛼, IL-1𝛽, IL-10 mRNA expression in lung tissue. It also decreased the severity of histological lung injury. Conclusion: This study suggests the usability of GGX for COPD patients by controlling lung tissue injury.

• Asian Pacific Journal of Cancer Prevention
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• 제17권7호
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• pp.3249-3253
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• 2016

Background: Pemetrexed monotherapy has come to be recognized as one of the standard second-line therapies for advanced non-squamous non-small cell lung cancer (NSCLC). However, there have been no reports of studies that have evaluated the efficacy of pemetrexed according to type of active EGFR mutation, i.e., an exon 19 deletion or an L858R point mutation. Materials and Methods: The records of non-squamous NSCLC patients harboring an EGFR mutation who received pemetrexed monotherapy as a second or later line of chemotherapy at Kitasato University Hospital between March 2010 and October 2015 were retrospectively reviewed, and the treatment outcomes were evaluated. Results: The overall response rate and progression-free survival time (PFS) of the 53 patients with non-squamous NSCLC were 15.1% and 2.3 months, respectively. There were significant differences between the disease control rate (37.5% vs. 76.2%) and PFS time (1.8 months vs. 3.3 months) of the exon 19 deletion group and the L858R point mutation group, and a multivariate analysis identified type of EGFR mutation as well as performance status (PS) as independent predictors of PFS. Conclusions: The clinical data obtained in this study provided a valuable rationale for considering type of EGFR mutation as well as non-squamous histology as predictors of the efficacy of pemetrexed monotherapy.

• 대한의용생체공학회:의공학회지
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• 제40권5호
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• pp.215-221
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• 2019

The respiratory medical device is a medical device that delivers optimal oxygen or a certain amount of humidification to a patient by delivering artificial respiration to a patient through a machine when the patient has lost the ability to breathe spontaneously. These include respirators for use in chronic obstructive pulmonary disease and anesthesia or emergency situations, and positive airway pressure devices for treating sleep apnea, and as the population of COPD (chronic obstructive pulmonary disease) and elderly people worldwide surge, the market for the respiratory medical devices it is getting bigger. As the demand for both airway pressure devices, there is a problem that the ventilator standard is applied because the reference standard has not been established. Therefore, the boundaries between the items are blurred due to the purpose, intended use, and method of use overlapping similar items in a respiratory medical device. In addition, for both airway pressure devices, there is a problem that the ventilator standard is applied because the reference standard has not been established. Therefore, in this study, we propose clear classification criteria for the respiratory medical devices according to the purpose, intended use, and method of use and provide safety and performance evaluation guidelines for those items to help quality control of the medical devices. And to contribute to the rapid regulating and improvement of public health. This study investigated the safety and performance test methods through the principles of the respiratory medical device, national and international standards, domestic and international licensing status, and related literature surveys. The results of this study are derived from the safety and performance test items in the individual ventilator(ISO 80601-2-72), the International Standard for positive airway pressure device (ISO 80601-2-70), The safety and performance of humidifiers (ISO 80601-2-74) and the safety evaluation items related to home healthcare environment (IEC 60601-1-11), In addition, after reviewing the guidelines drawn up through expert consultation bodies including manufacturers and importers, certified test inspection institutions, academia, etc., the final guidelines were established through revision and supplementation. Therefore, in this study, we propose guidelines for evaluating the safety and performance of the respiratory medical device in accordance with growing technology development.

• Tuberculosis and Respiratory Diseases
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• 제50권5호
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• pp.540-548
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• 2001

Backgrounds : Because ventilator-induced lung injury is partly dependent on the intensity of vascular flow, we hypothesized that hypothermia may attenuate the degree of such an injury through a reduced cardiac output. Methods : Twenty-seven male Sprague-Dawley rats were randomly assigned to normothermia ($37{\pm}1^{\circ}C$)-injurious ventilation (NT-V) group (n=10), hypothermia ($27{\pm}1^{\circ}C$)-injurious ventilation (HT-V) group (n=10), or nonventilated control group (n=7). The two thermal groups were subjected to injurious mechanical ventilation for 20 min with peak airway pressure 30 cm $H_2O$ at zero positive end-expiratory pressure, which was translated to tidal volume $54{\pm}6\;ml$ in the NT-V group and $53{\pm}4\;ml$ in the HT-V group (p>0.05). Results : Pressure-volume (P-V) curve after the injurious ventilation was almost identical to the baseline P-V curve in the HT-V group, whereas it was shifted rightward in the NT-V group. On gross inspection, the lungs of the HT-V group appeared smaller in size, and showed less hemorrhage especially at the dependent regions, than the lungs of the NT-V group. [Wet lung weight (g)/body weight (kg)] ($1.6{\pm}0.1$ vs $2.4{\pm}1.2$ ; p=0.014) and [wet lung weight/dry lung weight] ($5.0{\pm}0.1$ vs $6.1{\pm}0.8$ ; p=0.046) of the HT-V group were both lower than those of the NT-V group, while not different from those of the control group($1.4{\pm}0.4$, $4.8{\pm}0.4$, respectively). Protein concentration of the BAL fluid of the HT-V group was lower than that of the NT-V group($1,374{\pm}726\;ug/ml$ vs $3,471{\pm}1,985\;ug/ml$;p=0.003). Lactic dehydrogenase level of the BAL fluid of the HT-V group was lower than that of the NT-V group ($0.18{\pm}0.10\;unit/ml$ vs $0.43{\pm}0.22\;unit/ml$;p=0.046). Conclusions : Hypothermia attenuated pulmonary hemorrhage, permeability pulmonary edema, and alveolar cellular injuries associated with injurious mechanical ventilation, and preserved normal P-V characteristics of the lung in rats.

• 혜화의학회지
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• 제8권1호
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• pp.403-424
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• 1999

To evaluate the antitumor activity, antimetastatic and radioprotective effects of Kamisasammaekmundongtang(KSMT), studies were done experimentally. The results were obtained as follows: 1. In cytotoxicity against P388, A549 and B16-F10, KSMT was not showed satisfiable cytotoxicity as compared with control. 2. In Inhibitory effect on activity of DNA topoisomerase I, KSMT has strong inhibitory effect. 3. The inhibitory effect on adhesion of A549 to complex extracellular matrix was significantly increased at 0.5mg/ml, 1mg/ml of KSMT. 4. The T/C% was 122 in KSMT treated group in S-180 bearing ICR mice. 5. In antiangiogenetic effect on CAM assay, inhibitory rate was 33% in KSMT treated group. 6. In pulmonary colonization assay, a number of colonies in the lungs were decreased significantly in KSMT treated group as compared with control group. 7. By FACS analysis of splenic leukocyte after exposure to radiation by linear accelerator, T-helper cell, B cell and macrophage in KSMT treated group were significantly increased while splenocytes were decreased in control group. 8. In histological changes of jejunum of $Bald{\setminus}C$ mice after exposure to radiation by linear accelerator, exclusion and fusion of villi were decreased as compared with control group. But in duodenum and ileum, exclusion and fusion of villi were not decreased as compared with control group. 9. WBC, PLT were increased in KSMT treated group as compared with control group after exposure to radiation by linear accelerator, but the increasing effect was not significant. Above results suggest that KSMT may be useful in prevention of cancer metastasis and protection from damage by radiotherapy. But the further study of KSMT would be demanded.

• 대한한방내과학회지
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• 제38권6호
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• pp.955-970
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• 2017

Objectives: The aim of this observational study was to identify and analyze the patterns to compare the characteristics of asthma patients. Methods: The subjects were 40 asthma patients who had satisfied the inclusion and exclusion criteria. They were divided into deficiency syndrome and excess syndrome groups, and cold syndrome and heat syndrome groups. Their quality of life was measured by the quality of life questionnaire for adult Korean asthmatics (QLQAKA) and VAS. Heart rate variability (HRV) was measured, and the degree of obesity was evaluated by body mass index (BMI). Hematological, biochemical, and immunoglobulin (Ig) E laboratory tests were included. Results: Based on pattern identification, the 40 asthma patients could be divided into two categories of groups: 1) the deficiency syndrome (N=18) and the excess syndrome (N=22) groups: 2) the cold syndrome (N=35) and the heat syndrome (N=5) groups. The mean value of HF differed significantly between the deficiency and excess syndrome groups. The mean value of IgE in blood tests of asthmatics was greater than four times the reference value. For BMI, the subjects were classified into three groups: normal weight (N=12), overweight (N=12), and obese (N=16). Conclusions: Development of a more accurate asthma-specific pattern identification tool could play a crucial role in asthma control. In addition, good control of asthma can improve the quality of life. Obesity is one of the factors associated with asthma exacerbation.

• Journal of Yeungnam Medical Science
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• 제16권1호
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• pp.52-59
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• 1999

미숙아의 여러 가지 합병증 중에서도 선생아 호흡 곤란 증후군은 가장 빈도가 높고 사망률도 높은 질병이다. 이제까지 많은 저자들이 자궁내 성장기 동안에 폐 표면 활성제 생성을 증가시킴으로써 신생아 호흡 곤란 증후군을 예방할 수 있는 약제로 corticosteroid에 대한 연구를 하였으나, 산모와 태아 감염에 중요한 위협 요인이 되어 이 약의 사용이 제한적이다. 따라서 steroid의 부작용 때문에 태아의 폐를 성숙시킬 수 있는 ambroxol에 관심을 가지게 되었으며 이에 저자들은 출생 전 산모에게 투여한 ambroxol이 신생아 호흡 곤란 증후군의 발생 빈도에 어떤 영향을 미치는지와 그 부작용에 대해 알아보고자 하였다. 1996년 1월부터 1997년 12월까지 영남대학교 의과대학 부속 병원 산부인과에 입원하였던 36주 이전의 조산이 예견된 산모에게 ambroxol(Mucosolvan$^{(R)}$, Boehringer Ingelheim) 1,000mg을 5% glucose 용액에 녹여 2시간 이상 정주하며 3일에서 5일간 투여하였다. 또한 대조군에서는 생리 식염수를 정주하였다. 조기 분만의 원인이나 대상 환아 평균 재태 연령, 남녀비, 출생 체중과 1, 5분 Apgar 점수가 7점 미만인 미숙아의 수에는 양 군간의 의미있는 차이는 없었다. 그러나 대조군에서는 21명 중 13명에서 신생아 호흡 곤란 증후군이 발생하였고 ambroxol 사용군에서는 21명 중 6명에서 신생아 호흡 곤란 증후군이 발생하여 두 군간에 의미있는 차이가 있었다(p<0.05). 출생 후 산소 치료와 인공 환기를 필요로 했던 경우는 대조군에서는 각각 18, 12명이었고 ambroxol 사용군에서는 각각 9, 8명이었다. 산소치료를 요구된 시간은 ambroxol 군에서 낮았으나 인공 환기가 필요하였던 시간은 ambroxol 군에서 더 길었다. 그 외 미숙아에게 나타난 주산기 합병증의 빈도는 ambroxol 사용군과 대조군을 비교해 보면 두 군이 같거나 ambroxol 군이 더 적었다. Ambroxol 투여 전과 후의 산모의 혈액학적, 생화학적 검사에 의미있는 변화는 없었다. 그리고 ambroxol 사용군에서 산모가 호소하는 부작용으로는 경미한 오심이 3례 있었으나 구토, 두통이나 현기증, 알레르기 반응 등은 나타나지 않았다. 그러므로 본 연구에서는 미숙아 출생 전 산모에게 투여한 ambroxol은 신생아 호흡 곤란 증후군의 발생 빈도를 감소시킨다고 생각되며 이를 위해 산모에게 안전하게 사용할 수 있는 약제로 생각된다.

• Tuberculosis and Respiratory Diseases
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• 제78권3호
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• pp.196-202
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• 2015

Background: Viridans streptococci (VS) are a large group of streptococcal bacteria that are causative agents of community-acquired respiratory tract infection. However, data regarding their clinical characteristics are limited. The purpose of the present study was to investigate the clinical and radiologic features of community-acquired pneumonia (CAP) with or without parapneumonic effusion caused by VS. Methods: Of 455 consecutive CAP patients with or without parapneumonic effusion, VS were isolated from the blood or pleural fluid in 27 (VS group, 5.9%) patients. Streptococcus pneumoniae was identified as a single etiologic agent in 70 (control group) patients. We compared various clinical parameters between the VS group and the control group. Results: In univariate analysis, the VS group was characterized by more frequent complicated parapneumonic effusion or empyema and bed-ridden status, lower incidences of productive cough, elevated procalcitonin (>0.5 ng/mL), lower age-adjusted Charlson comorbidity index score, and more frequent ground glass opacity (GGO) or consolidation on computed tomography (CT) scans. Multivariate analysis demonstrated that complicated parapneumonic effusion or empyema, productive cough, bed-ridden status, and GGO or consolidation on CT scans were independent predictors of community-acquired respiratory tract infection caused by VS. Conclusion: CAP caused by VS commonly presents as complicated parapneumonic effusion or empyema. It is characterized by less frequent productive cough, more frequent bed-ridden status, and less common CT pulmonary parenchymal lesions. However, its treatment outcome and clinical course are similar to those of pneumococcal pneumonia.

• 융합정보논문지
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• 제10권5호
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• pp.126-133
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• 2020

본 연구는 합창과 호흡훈련을 병합한 복합예술교육프로그램이 대학생의 호흡기능 및 스트레스와 삶의 질에 미치는 영향을 알아보기 위하여 무작위 대조군 사전 사후 연구 설계로 진행하였다. 본 연구는 대학생 25명을 대상으로 복합예술교육프로그램을 시행한 실험군 (n=13)과 일반 예술교양프로그램을 적용한 대조군 (n=12)으로 무작위 배정하였다. 그 결과 실험군에서 실험 전 후 폐활량과 호흡근력, 스트레스와 삶의 질 척도에 유의한 차이를 보였다 (p<0.05). 또한 실험군 대조군간에 비교하였을 때, 1초간 노력성 날숨량(FEV₁) 결과를 제외하고 나머지 검사결과 값은 유의한 차이를 보였다 (p<0.05). 본 연구결과를 통하여 합창과 호흡훈련을 병합한 복합예술교육프로그램은 대학생의 스트레스 감소, 호흡기능과 삶의 질을 향상 시키는 프로그램으로 유익할 것이다.

• 대한한방내과학회지
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• 제45권1호
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• pp.11-30
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• 2024

Objectives: This study evaluated the effects of Ssanghwa-tang (SHT) on lung injury and muscle loss in a COPD mouse model. Methods: C57BL/6 mice were challenged with cigarette smoke extract and lipopolysaccharide, and then treated with two concentrations of SHT (250 and 500 mg/kg). After sacrifice, the bronchoalveolar lavage fluid (BALF) or lung tissue was analyzed by cytospin, ELISA, real-time PCR, flow cytometry analysis, and H&E and Masson's trichrome staining. The grip strength of COPD mice was measured using a grip strength meter. The running time of COPD mice was measured by a treadmill test. Muscle tissue of the quadriceps was stained with H&E and Masson's trichrome staining. Results: SHT significantly inhibited the increase in neutrophil numbers in BALF and significantly decreased immune cell activity in BALF and lung tissue. It also significantly inhibited the increase in TNF-α, IL-17, and MIP2 in BALF. Real-time PCR analysis revealed that the mRNA expression of TNF-α, IL-17, MIP2, and TRPV1 in lung tissue showed a significant decrease compared with the control group. Lung tissue damage was significantly reduced in the histological analysis. The grip strength and running time of the COPD mice showed a significant decrease compared with the control group. In histological staining, SHT was found to reduce the damage to muscle tissue. Conclusions: This study indicates that SHT can be used as a therapeutic agent for COPD patients by inhibiting lung injury and muscle loss.