• Tuberculosis and Respiratory Diseases
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• 제46권3호
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• pp.327-337
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• 1999

연구배경: 활성산소종(reactive oxygen species)은 발암 기전의 여러 단계 과정에 관여한다. 대부분의 종양 세포주 및 종양 조직내의 종양 세포는 활성산소종을 생성하는 반면 종양 세포의 catalase, Mn- 및 CuZn-SOD등 기존 항산화 단백의 활성도는 대부분 저하되어 있다. 이로 인한 종양 조직내의 지속적인 산화 스트레스는 종양의 국소 침습 및 전이를 촉진한다. 12-kDa thioredoxin은 glutathione 및 glutaredoxin과 함께 세포내 산화-환원 전위를 조절하여 세포 활성, 증식, 분화 및 산화-환원에 의한 아포토시스 조절에 관여하는 것으로 알려져 있다. 한편 histiocytic lymphoma 세포 (U937, human)에서 14-kDa 및 10-kDa의 eosinophilic cytotoxic enhancing factor(ECEF)로 정제되었으며 호산구 자극의 생물학적 기능은 10-kDa에서 20배 이상 높은 것으로 알려져 있다. 성인 T-세포백혈병, 자궁경부상피세포암 및 간세포암에서 thioredoxin 양이 증가 되어 있고 폐암에서는 thioredoxin mRNA가 증가되어 있는 것으로 알려져 있다. 이에 폐암 조직과 주위 정상 조직을 비교하여 catalase, CuZn-SOD 및 glutathione peroxidase 등 기존 항산화 단백과 thioredoxin 발현 변화를 비교 관찰하고 대식세포에서 산화 스트레스 및 내독소에 의한 thioredoxin 발현 변화를 관찰하고자 하였다. 방 법: 동일한 환자의 폐암 조직과 주변의 정상 폐 조직을 immunoblot 분석으로 catalase, CuZn-SOD, glutathione peroxidase 및 thioredoxin 발현을 비교 관찰하였으며 대식세포인 mouse monocyte-macrophage 세포 (RAW 264.7)에 5 ${\mu}M$ menadione 및 1 ${\mu}g/ml$ endotoxin을 처치하여 thioredoxin 발현을 관찰하였다. 결 과: Immunoblot 분석상 12-kDa의 thioredoxin 발현은 폐암 조직에서 정상 폐조직과 비교하여 의미있는 증가를 보였으나 catalase 및 CuZn-SOD의 발현은 폐암 조직에서 정상 폐조직과 비교하여 감소하였고 glutathione peroxidase의 발현은 일정 하지 않은 변화를 보였다. 절단형(truncated) thioredoxin 역시 폐암에서 증가하였다. Mouse monocyte-macrophage cells에 5 ${\mu}M$ menadione 및 1 ${\mu}g/ml$ endotoxin을 처치하였을때 thioredoxin 발현은 12시간에 최고로 증가하여 48 시간까지 지속되었다. 결 론: 폐암에서 기존의 항산화 단백과는 달리 12-kDa 및 절단형 thioredoxin 발현이 증가하며 이는 종양 조직내의 지속적인 산화 스트레스와 밀접한 연관이 있다. 특히 절단형 thioredoxin의 생물학적 기능을 고려할 때 절단형 thioredoxin 발현 증가는 종양 세포 증식을 통한 종양 성장에 더욱 의미있는 역할하리라고 생각된다.

• Tuberculosis and Respiratory Diseases
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• 제73권1호
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• pp.61-66
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• 2012

Extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue type (extranodal MZL) is a distinct subgroup of non-Hodgkin's lymphoma. Pulmonary extranodal MZL is a rare entity and accounts for less than 0.5% of primary pulmonary malignancies. Only a few cases of simultaneous occurrence of lung cancer and pulmonary extranodal MZL have been reported. A 60-year-old woman was referred to our hospital with a pulmonary nodule. She was diagnosed with lung adenocarcinoma by percutaneous needle biopsy. The protrusions into the left main bronchus were found by accident while performing bronchoscopy during lung cancer evaluation. The bronchial lesions were diagnosed as extranodal MZL. Although the patient underwent surgical resection for the lung adenocarcinoma, the pulmonary extranodal MZL was left untreated; it was monitored during follow-up visits. To our knowledge, this is the first report of synchronous lung adenocarcinoma and primary extranodal MZL of the main bronchus.

• Asian Pacific Journal of Cancer Prevention
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• 제14권4호
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• pp.2393-2399
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• 2013

Objective: Mitochondrial DNA (mtDNA) is considered a hotspot of mutations in various tumors. However, the relationship between microsatellite instability (MSI) and mtDNA copy number alterations in lung cancer has yet to be fully clarifieds. In the current study, we investigated the copy number and MSI of mitochondrial genome in lung carcinomas, as well as their significance for cancer development. Methods: The copy number and MSI of mtDNA in 37 matched lung carcinoma/adjacent histological normal lung tissue samples were examined by polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) assays for sequence variation, followed by sequence analysis and fluorogenic 5'-nuclease real-time PCR. Student's t test and linear regression analyses were employed to analyze the association between mtDNA copy number alterations and mitochondrial MSI (mtMSI). Results: The mean copy number of mtDNA in lung carcinoma tissue samples was significantly lower than that of the adjacent histologically normal lung tissue samples (p<0.001). mtMSI was detected in 32.4% (12/37) of lung carcinoma samples. The average copy number of mtDNA in lung carcinoma samples containing mtMSI was significantly lower than that in the other lung carcinoma samples (P<0.05). Conclusions: Results suggest that mtMSI may be an early and important event in the progression of lung carcinogenesis, particularly in association with variation in mtDNA copy number.

• The Korean Journal of Physiology
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• 제25권1호
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• pp.81-85
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• 1991

At the fifth day after right lung pneumonectomy in New-Zealand white rabbits $(0.8{\sim}1.1\;kg\;B.W.)$, phospholipid and protein concentration in the left lung lavage fluid were measured for clarification of the effect of unilateral pneumonectomy on the secretory function of the type II pneumocytes in growing rabbits. In an attempt to evaluate the effect of unilateral pneumonectomy on the compensatory growth of the residual lung, left lung weight and left lung weight-body weight ratio and DNA concentration, RNA/DNA and total DNA content in the left lung tissue were measured in pneumonectomized and in sham operated control rabbits. The lung weight of pneumonectomized rabbit was approximately two times heavier than that of the control rabbits. DNA concentration and RNA/DNA of the lung tissue were not changed but total DNA content was increased significantly. Phospholipid concentration in the lung lavage fluid of the pneumonectomized rabbits was over two times higher than that of control rabbits. from these experimental results, It is concluded that unilateral pneumonectomy in growing rabbits might cause to increase the secretion of pulmonary surfactant from type II pneumocyte of the residual lung. The cellular hyperplasia seems to be the primary response of the compensatory growing lung in unilateral pneumonectomized growing rabbits.

• 대한의생명과학회지
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• 제9권1호
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• pp.37-42
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• 2003

The present study was conducted to determine whether administration of heat extract of Lepidii Semen has an inhibitory effect on neutrophil-derived oxidative injury following dermal scald burn in rats. Acute lung injury was induced by scald burn (15% of TBSA) in rats. To identify acute edematous lung injury, protein concentrations and numbers of polymorphonuclear leukocytes were measured in bronchoalveolar lavage (BAL) at 5 h after skin burn. In addition, the level of lung KC (neutrophil chemoattractant cytokine) and activity of lung myeloperoxidase (MPO) were measured, and histopathological changes were observed as well. Lung weight and concentration of BAL protein, the index of lung injury, were clearly increased at 5 h postburn compared with those of sham-operated group. Administration of heat extract of Lepidii Semen after scald burn inhibited the production of KC in lung tissue and decreased the activity of lung MPO related to infiltration of neutrophils. In histopathological changes in lung tissue, infiltration of inflammatory cells and pulmonary edema induced by skin burn were decreased by administration of heat extract of Lepidii Semen after scald burn. These results suggest that Lepidii Semen may be an effective medical stuff for acute lung injury induced by skin burn.

• Asian Pacific Journal of Cancer Prevention
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• 제13권10호
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• pp.5233-5236
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• 2012

CK2 is a serine threonine kinase that participates in a variety of cellular processes with more than 300 defined substrates. This critical enzyme is known to be upregulated in cancers, but the role of this upregulation in carcinogenesis is not yet fully understood but c-myc, one of the defined CK2 substrates, is a well-known proto-oncogene that is normally essential in developmental process but is also involved in tumor development. We evaluated the optimal enzyme and substrate concentrations for CK2 activity in both neoplastic and non-neoplastic human lung tissues using the c-$myc^{424-434}$ peptide (EQKLISEEDL) as a substrate. The activities measured for the neoplastic tissue were 600-750 U/mg protein while those for the control tissue was in the range of 650-800 U/mg. $K_m$ value for c-myc peptide was determined as $0.33{\mu}M$ in non-neoplastic tissue and $0.18{\mu}M$ in neoplastic tissue. In this study, we did not observe an increased activity in the neoplastic tissue when compared with the non-neoplastic lung tissue, but we recorded two times higher affinity for c-$myc^{424-434}$ in cancer tissue. Considering the metabolic position of c-$myc^{424-434}$, our results suggest that phosphorylation by CK2 may be important in dimerization and thus it might affect the regulation of c-myc in cancer tissues.

• 한국독성학회:학술대회논문집
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• 한국독성학회 2003년도 추계학술대회
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• pp.163-163
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• 2003

Difficulties of long-tenn survival of lung cancer patients treated with conventional therapies require the need for novel approaches and gene therapy holds promise in this area. Several genes are known to have anti-tumor activities and have been used as a gene of delivery, however, a number of problems such as efficiency, specificity of the gene delivery hinder the application of gene therapy.(omitted)

• Asian Pacific Journal of Cancer Prevention
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• 제15권22호
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• pp.9865-9869
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• 2014

Background: Transthoracic fine needle aspiration (FNA) is one of several methods for establishing tissue diagnosis of lung lesions. Other tissue or cell sources for diagnosis include sputum, endobronchial biopsy, washing and brushing, endobronchial FNA, transthoracic core needle biopsy, biopsy from thoracoscopy or thoracotomy. The purpose of this study was to compare the sensitivity and specificity of FNA and other diagnostic tests in diagnosing lung lesions. Materials and Methods: The population included all patients undergoing FNA for lung lesions at Meir Medical Center from 2006 through 2010. Information regarding additional tissue tests was derived from the electronic archives of the Department of Pathology, patient records and files from the Department of Oncology. Sensitivity, specificity, diagnostic accuracy, and positive and negative predictive values were calculated for each test. Results: FNA was carried out in 245 patients. Malignant tumors were diagnosed in 190 cases (78%). They included adenocarcinoma (43%), squamous cell carcinoma (15%), non-small cell carcinoma, not otherwise specified (19%), neurondocrine tumors (7%), metastases (9%) and lymphoma (3%). The specificity of FNA for lung neoplasms was 100%; sensitivity and diagnostic accuracy were 87%. Conclusions: FNA is the most sensitive procedure for establishing tissue diagnoses of lung cancer. Combination with core needle biopsy increases the sensitivity. Factors related to the lesion (nature, degenerative changes, location) and to performance of all stages of test affect the ability to establish a diagnosis.

• 셀메드
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• 제3권3호
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• pp.25.1-25.8
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• 2013

Homoeopathically prepared Condurango 30C is traditionally used in amelioration of certain types of cancer by homeopathic practitioners. In this study, ability of Condurango 30C in amelioration of the conventional benzo[a]pyrene (BaP)-induced lung cancer in rat has been tested. After one month of scheduled oral feeding of BaP, lung cancer is routinely developed after four months in rats. Tumorbearing rats were then treated with Condurango 30C for the next one ($5^{th}$), two ($6^{th}$) and three ($7^{th}$) months, respectively, and sacrificed. Efficacy of post-cancer treatment by Condurango 30C was evaluated against controls (placebo) by different study parameters like: body and lung weights, number and diameter of lung tumour nodules, lung architecture, DNA damage, anti-oxidant activity and reactive oxygen species (ROS) accumulation. Administration of this homeopathic remedy caused increase of body weight and decrease of lung weight, decrease in number and diameter of lung tumour nodules, particularly after one and two months of drug treatment. BaP intoxication significantly increased lipid peroxidase (LPO) with concomitant decrease in activities of different antioxidants, while Condurango 30C administration certainly reduce their levels than normal and cancerous groups, notably after one and two months' of drug treatment. Condurango 30C showed capability to induce ROS-mediated cell death evidenced from the study of ROS activities at different time-points. Further, the remedy possibly achieved its anticancer goal through mediation of DNA-nicks that possibly led cancer cells to the apoptotic pathway. Thus, Condurango 30C has anticancer potential in BaP-induced lung cancer of rats via tissue damage recovery and ROS-mediated programmed cell death.

• Journal of Chest Surgery
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• 제27권1호
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• pp.63-67
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• 1994

We report two cases of giant soft tissue sarcomas metastatic to the lung from lower extremities. The lung metastasis occurred 2 years later from original diagnosis in 27-year-old woman with hemangiopericytoma and 8 years later in 54-year-old woman with synovial sarcomtt. We had performed pleuropneumonectomies with partial resection of pericardium involved. The postoperative courses were uneventful and postoperative adjuvant therapy was begun.