• 제목/요약/키워드: metastatic tumor

검색결과 913건 처리시간 0.031초

악성 흉막액에서 CEA와 CYFRA 21-1의 진단적 유용성 (Diagnostic Utility of Pleural Fluid CEA and CYFRA 21-1 for Malignant Pleural Effusions)

  • 정재호;최정은;박무석;황상연;문진욱;김영삼;장준;김주항;김성규;김세규
    • Tuberculosis and Respiratory Diseases
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    • 제57권1호
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    • pp.32-36
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    • 2004
  • 목 적 : 악성 흉막액의 진단을 위해서는 흉막액 세포진 검사, 흉막 생검 등이 이용되지만 위음성의 문제가 있어서 이를 보완하기 위해서 지금까지 여러 종양 표지자들이 흉막액에서 측정되어 왔다. 저자 등은 흉막액의 감별진단에 널리 알려진 CEA와 최근에 소개된 CYFRA 21-1의 진단적 유용성에 대해 알아보기 위해 본 연구를 시행하였다. 방 법 : 2002년 4월부터 2003년 11월까지 흉막액으로 내원한 222예(양성 150예, 폐암 57예, 전이성암 15예)를 대상으로 하여 전향적으로 혈청과 흉막액에서 CEA와 CYFRA 21-1를 각각 측정하였다. 결 과 : 양성 흉막액에 비해 악성 흉막액에서 유의하게 CEA와 CYFRA 21-1값이 높았으며, 특이도를 95%로 하였을 때 흉막액 CEA와 CYFRA 21-1의 cut off 값은 각각 5, 89 ng/ml 이었고 민감도는 각각 72%, 54%이었다. 흉막액에서 CEA와 CYFRA 21-1를 병용하여 검사했을 때의 민감도는 87%로 CEA나 CYFRA 21-1 단독검사에 비해 유의하게 높게 나타났다(p<0.05). 결 론 : 흉막액 CEA와 CYFRA 21-1 검사의 병용은 악성흉막액의 진단에 유용할 것으로 생각된다.

혈관육종의 낭성 폐전이에 의한 기흉 1예 (A Case of Pneumothorax Caused by Cystic Lung Metastasis of Angiosarcoma)

  • 이찬주;최준정;전한호;정경수;박병훈;박선철;신상윤;정우영;변민광;문지애;김영삼;김세규;장준;김성규;박무석
    • Tuberculosis and Respiratory Diseases
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    • 제64권5호
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    • pp.374-378
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    • 2008
  • 혈관육종은 매우 드문 악성종양으로 고령 남자의 두피나 얼굴에 주로 발생하며, 폐로 전이되는 경우가 있다. 폐전이의 경우 객혈, 기흉 등의 호흡기계 증상을 일으킬 수 있다. 저자들은 혈관육종의 폐전이가 낭성변화를 일으켜 기흉 및 혈흉을 초래한 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다.

척추방사선수술시 실시간 추적검사에 의한 병소목표점 위치변이 평가 (Evaluation of Real-time Target Positioning Accuracy in Spinal Radiosurgery)

  • 이동준
    • 한국의학물리학회지:의학물리
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    • 제24권4호
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    • pp.290-294
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    • 2013
  • 방사선수술은 고 용량의 방사선을 병소의 목표점에 정확하게 주위의 정상조직을 보호하면서 한 번에 혹은 수 차에 거쳐 전달하는 방법이므로 병소 국재에 대한 오차의 크기는 방사선수술에 직접적인 영향을 끼치게 된다. 본 연구에서는 영상유도 국재 장비인 ExacTrac (BrainLab, Germany)을 이용한 척추방사선수술에서 병소 목표점 국재의 오차를 평가하였다. 국재 오차를 최소화 하기위하여 방사선수술 전 '환자위치 확인장치(PPVT)'를 고안하여 부가적으로 사용하였다. 실시간 목표점오차 평가를 위하여 흉추에 전이된 종양에 대한 방사선수술 8례를 대상으로 평가하였다. 그 결과 isocenter 목표점 오차는 횡단면(lateral) 축 방향, 종단면(longitudinal) 축 방향, 수직면(vertical) 축 방향으로 각각 $0.07{\pm}0.17$ mm, $0.11{\pm}0.18$ mm, $0.13{\pm}0.26$ mm이었으며 평균 공간오차는 $0.20{\pm}0.37$ mm이었다. 병소 isocenter의 회전오차(body rotation)는 종단면(longitudinal) 축 방향 $0.14{\pm}0.07^{\circ}$, 횡단면(lateral) 축 방향 $0.11{\pm}0.07^{\circ}$, 환자테이블 각 이동 $0.03{\pm}0.04^{\circ}$로 평균오차는 $0.20{\pm}0.11^{\circ}$이었다. 본 연구결과 영상유도 국재방법을 이용한 척추방사선수술에서의 병소목표점 국재 평균오차는 임상적으로 허용할 수 있는 오차범위 이내 임을 확인하였다.

Clinical Implications of Microsatellite Instability in Early Gastric Cancer

  • Kim, Dong Gyu;An, Ji Yeong;Kim, Hyunki;Shin, Su-Jin;Choi, Seohee;Seo, Won Jun;Roh, Chul Kyu;Cho, Minah;Son, Taeil;Kim, Hyoung-Il;Cheong, Jae-Ho;Hyung, Woo Jin;Noh, Sung Hoon;Choi, Yoon Young
    • Journal of Gastric Cancer
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    • 제19권4호
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    • pp.427-437
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    • 2019
  • Purpose: We aimed to evaluate the clinical characteristics of microsatellite instability in early gastric cancer. Materials and Methods: The microsatellite instability status of resected early gastric tumors was evaluated using two mononucleotide repeat markers (BAT25 and BAT26) and three dinucleotide repeat markers (D5S346, D2S123, and D17S250). Tumors with instability in two or more markers were defined as microsatellite instability-high (MSI-H) and others were classified as microsatellite stable (MSS). Results: Overall, 1,156 tumors were included in the analysis, with 85 (7.4%) classified as MSI-H compared with MSS tumors. For MSI-H tumors, there was a significant correlation with the female sex, older age, tumor location in the lower gastric body, intestinal histology, lymphovascular invasion (LVI), and submucosal invasion (P<0.05). There was also a trend toward an association with lymph node (LN) metastasis (P=0.056). In mucosal gastric cancer, there was no significant difference in MSI status in tumors with LN metastasis or tumors with LVI. In submucosal gastric cancer, LVI was more frequently observed in MSI-H than in MSS tumors (38.9% vs. 25.0%, P=0.027), but there was no difference in the presence of LN metastases. The prognosis of MSI-H tumors was similar to that of MSS tumors (log-rank test, P=0.797, the hazard ratio for MSI-H was adjusted by age, sex, pT stage, and the number of metastatic LNs, 0.932; 95% confidence interval, 0.423-2.054; P=0.861). Conclusions: MSI status was not useful in predicting prognosis in early gastric cancer. However, the frequent presence of LVI in early MSI-H gastric cancer may help guide the appropriate treatment for patients, such as endoscopic treatment or limited LN surgical dissection.

TNF-$\alpha$에 의해 유도된 세포부착분자의 발현에 대한 Delphinidin chloride의 억제 효과 (Delphinidin Chloride Effects on the Expression of TNF-$\alpha$ Induced Cell Adhesion Molecules)

  • 고은경;채수철;서은선;나명석;이종빈
    • 환경생물
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    • 제27권1호
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    • pp.88-94
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    • 2009
  • 안토시아닌(Anthocyanin)은 플라보노이드계 화합물의 한 부류로 항산화, 항암 및 항궤양, 항당뇨, 중금속해독, 시력보호, 콜레스테를 저하 등의 다양한 생리활성을 가지는 것으로 보고되어 있다. 죽상경화과정은 염증성 사이토카인의 분비 또는 혈관손상으로 인한 백혈구의 부착과 이동을 통해 시작된다. 본 연구는 이러한 죽상경화의 초기과정에서 안토시아닌 혼합물 중 single compound인 delphinidin chloride (DC) 인간혈관 내피세포주(HUVEC, human umbilical vein endothelial cell line)에서 백혈구 부착과 관련이 있는 ICAM-1 (Intraceliular Adhesion Molecule-1)과 VCAM-1 (Vascular Adhesion Molecule-1) 발현에 미치는 영향에 대해 조사하였다. 세포독성이 없는 농도에서 TNF-$\alpha$에 의해 유도된 혈관 내피세포에 대한 단핵구의 부착정도를 측정하기 위해 monocyte-endothelial cell adhesion assay와 광학현미경을 이용한 형태학적 관찰을 한 결과 DC가 처리농도 의존적으로 부착을 억제하였다. 내피세포로부터 TNF-$\alpha$에 의해 유도된 세포부착 분자인 VCAM-1과 ICAM-1의 발현에 대한 영향을 western blot analysis 및 RT-PCR방법으로 비교 분석한 결과 VCAM-1과 ICAM-1의 단백질과 mRNA수준에서의 발현이 농도 의존적으로 감소되었다. 이러한 결과들을 종합해 볼 때 안토시아닌 중에서 DC를 실험한 결과 DE는 TNF-$\alpha$에 의해 유도된 내피세포의 ICAM-1과 VCAM-1 발현 억제효과를 확인할 수 있었다.

국소진행된 하인두암에서 선행 항암화학요법과 방사선치료의 효과 (Effect of Induction Chemotherapy Followed by Radiation Therapy of Locally Advanced Hypopharyngeal Carcinoma)

  • 김재원;손희영;전시영;박정제;안성기;강기문;김진평
    • 대한두경부종양학회지
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    • 제24권1호
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    • pp.26-32
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    • 2008
  • Purpose:Hypopharyngeal carcinoma is usually diagnosed as an advanced disease after an asymptomatic beginning, and it is related to a high frequency of lymph node metastases. An eventual negative outcome may occur not only because of possible locoregional failures but also for frequent distant metastases. Thus, the efficacy of induction chemotherapy followed by radiation therapy, with regards to the response, survival rate and complications for locally advanced hypopharyngeal carcinoma patients, was examined. Methods and Materials:Since July 1998 to February 2001, 18 patients having locally advanced hypopharyngeal carcinoma were treated with induction chemotherapy followed by radiation therapy, and the results were retrospectively analyzed. The regimen of the induction chemotherapy was the 5-flurouracil(5-FU, 1,000mg/$m^2$ daily for 5 consecutive days) and cisplatin(100mg/$m^2$ on day 1) combination at 3-week intervals for 2 cycles. The total radiation dose for the primary tumor and metastatic lymph nodes was 68.4-72.0Gy(median:70.2Gy) Results:The 3-year overall survival rate and disease free survival rate were 31.3% and 22.2%, respectively. In 6 patients(33.3%), preservation of the larynx for over 3 years was possible. After the induction chemotherapy and radiotherapy, a complete response was noted in 14 patients(77.8%), and a partial response in 4 patients (22.2%), with an overall response rate of 100%. Conclusion:Induction chemotherapy followed by radiation therapy is an effective treatment and larynx preservation rate was 33% in patients with locally advanced hypopharyngeal carcinoma in our report.

Regional Lymph Node Dissection as an Additional Treatment Option to Endoscopic Resection for Expanded Indications in Gastric Cancer: a Prospective Cohort Study

  • Seo, Ho Seok;Yoo, Han Mo;Jung, Yoon Ju;Lee, Sung Hak;Park, Jae Myung;Song, Kyo Young;Jung, Eun Sun;Choi, Myung-Gyu;Park, Cho Hyun
    • Journal of Gastric Cancer
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    • 제20권4호
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    • pp.442-453
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    • 2020
  • Purpose: Expanded indications for endoscopic submucosal dissection (ESD) in early gastric cancer (EGC) remain controversial due to the potential risk of undertreatment after adequate lymph node dissection (LND). Regional LND (RLND) is a novel technique used for limited lymphadenectomy to avoid gastrectomy. This study established the safety and effectiveness of RNLD as an additional treatment option after ESD for expanded indications. Materials and Methods: A total of 69 patients who met the expanded indications for ESD were prospectively enrolled from 2014 to 2017. The tumors were localized using intraoperative esophagogastroduodenoscopy (EGD) before RLND. All patients underwent RLND first, followed by conventional radical gastrectomy with LND. The locations of the preoperative and intraoperative EGD were compared. Pathologic findings of the primary lesion and the RLND status were analyzed. Results: The concordance rates of tumor location between the preoperative and intraoperative EGD were 79.7%, 76.8%, and 63.8% according to the longitudinal, circumferential, and regional locations, respectively. Of the 4 patients (5.7%) with metastatic LNs, 3 were pathologically classified as beyond the expanded indication for ESD and 1 had a single LN metastasis in the regional lymph node. Conclusions: RLND is a safe additional option for the treatment of EGC in patients meeting expanded indications after ESD.

참당귀로부터 분리한 다당의 면역증진 활성과 항전이 활성 (Immuno-stimulating and anti-metastatic activities of the polysaccharides isolated from Angelica gigas)

  • 손승우;신광순
    • 한국식품과학회지
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    • 제53권3호
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    • pp.304-312
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    • 2021
  • 참당귀로부터 열수추출 및 에탄올 침전법을 이용해 조다당을 분리하고 DEAE-Sepharose FF와 Sephadex G-100을 이용하여 얻은 정제 다당 AGE-2c-I을 대상으로 선천 면역 활성 및 항종양 전이 효과를 확인하고자 하였다. 인체의 초기 면역 반응에 있어 중추적인 역할을 수행하는 보체계 활성화 및 활성화 경로를 확인한 결과, AGE-2c-I은 운지버섯 유래 시판 면역증강제인 PSK에 준하는 우수한 활성을 나타내는 것으로 확인되었으며. 본 활성은 주로 고전경로를 통하여 활성화되며 일부 부경로를 경유하는 것으로 최종 확인되었다. 또한 AGE-2c-I은 mouse 복강 유래 대식세포에 대해 직접적인 독성을 나타내지 않으며 종양세포주 YAC-1 및 B16BL6에 대한 직접적인 독성 또한 나타나지 않음을 확인함으로써 시료의 직접적인 독성에 근거한 항암 효과는 없는 것으로 확인되었다. 반면에 비장으로부터 분리한 림프구는 8 ㎍/mL의 AGE-2c-I 처리에 의해 증식능이 관찰되었다. AGE-2c-I이 대식세포의 cytokine 분비능에 미치는 효과를 확인한 결과, 우수한 IL-6, IL-12 및 TNF-α 분비능을 보였으며 시료를 200 ㎍ 및 1,000 ㎍의 고농도로 처리한 실험군에서 IL-10이 분비된 것으로 보아 AGE-2c-I은 immune-stimulator의 역할뿐만 아니라 immune-suppressor로서의 작용 또한 가능한 것으로 확인되었다. 한편 종양 및 암세포에 대하여 직접적인 살해 활성을 나타내는 NK cell 활성을 확인한 실험에서는 농도 의존적인 종양 세포 살해능을 확인할 수 있었으며 100 ㎍/mouse 농도에서 NC 대비 약 1.5배 높은 NK cell 활성을 나타냈을 뿐만 아니라, 폐에 대한 고전이성 종양세포주인 B16BL6 melanoma 세포를 이용한 실험동물 종양 전이 모델에선 100 ㎍/mouse 농도로 처리한 실험군이 NC 대비 58%의 colony가 감소한 것을 확인할 수 있었다. 이상의 결과로 부터 참당귀 유래 RG-I 구조의 다당은 높은 선천면역계 자극 활성, 특히 보체계, 대식세포, 림프구 증식, NK cell의 활성화를 통해 우수한 항종양 전이 효과를 갖는 것으로 최종 확인되었으며 건강기능성식품 소재로의 개발가치가 우수한 것으로 판단되었다.

Platelet-Derived Growth Factor Receptor-α Subunit Targeting Suppresses Metastasis in Advanced Thyroid Cancer In Vitro and In Vivo

  • Lin, Ching-Ling;Tsai, Ming-Lin;Chen, Yu-hsin;Liu, Wei-Ni;Lin, Chun-Yu;Hsu, Kai-Wen;Huang, Chien-Yu;Chang, Yu-Jia;Wei, Po-Li;Chen, Shu-Huey;Huang, Li-Chi;Lee, Chia-Hwa
    • Biomolecules & Therapeutics
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    • 제29권5호
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    • pp.551-561
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    • 2021
  • Thyroid cancer is the most common endocrine malignancy. Patients with well-differentiated thyroid cancers, such as papillary and follicular cancers, have a favorable prognosis. However, poorly differentiated thyroid cancers, such as medullary, squamous and anaplastic advanced thyroid cancers, are very aggressive and insensitive to radioiodine treatment. Thus, novel therapies that attenuate metastasis are urgently needed. We found that both PDGFC and PDGFRA are predominantly expressed in thyroid cancers and that the survival rate is significantly lower in patients with high PDGFRA expression. This finding indicates the important role of PDGF/PDGFR signaling in thyroid cancer development. Next, we established a SW579 squamous thyroid cancer cell line with 95.6% PDGFRA gene insertion and deletions (indels) through CRISPR/Cas9. Protein and invasion analysis showed a dramatic loss in EMT marker expression and metastatic ability. Furthermore, xenograft tumors derived from PDGFRA geneedited SW579 cells exhibited a minor decrease in tumor growth. However, distant lung metastasis was completely abolished upon PDGFRA gene editing, implying that PDGFRA could be an effective target to inhibit distant metastasis in advanced thyroid cancers. To translate this finding to the clinic, we used the most relevant multikinase inhibitor, imatinib, to inhibit PDGFRA signaling. The results showed that imatinib significantly suppressed cell growth, induced cell cycle arrest and cell death in SW579 cells. Our developed noninvasive apoptosis detection sensor (NIADS) indicated that imatinib induced cell apoptosis through caspase-3 activation. In conclusion, we believe that developing a specific and selective targeted therapy for PDGFRA would effectively suppress PDGFRA-mediated cancer aggressiveness in advanced thyroid cancers.

Recombinant human KAI1/CD82 attenuates M1 macrophage polarization on LPS-stimulated RAW264.7 cells via blocking TLR4/JNK/NF-κB signal pathway

  • Hyesook Lee;Jung-Hwa Han;Kangbin An;Yun Jeong Kang;Hyun Hwangbo;Ji Hye Heo;Byung Hyun Choi;Jae-Joon Kim;Seo Rin Kim;Soo Yong Lee;Jin Hur
    • BMB Reports
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    • 제56권6호
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    • pp.359-364
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    • 2023
  • KAI1/CD82, a membrane tetraspanin protein, can prevent various cancers and retinal disorders through its anti-angiogenic and anti-metastatic capacity. However, little is known about its anti-inflammatory effect and molecular mechanism. Therefore, the present study aimed to inLPSvestigate effect of a recombinant protein of the large extracellular domain of human KAI1 (Gly 111-Leu 228, rhKAI1) on lipopolysaccharides (LPS)-stimulated RAW264.7 macrophage-like cells and mouse bone marrow-derived macrophages (BMDM) and to identify its underlying mechanism. Our data showed that rhKAI1 suppressed expression levels of classically macrophages (M1) phenotype-related surface markers F4/80+CD86+ in LPS-stimulated BMDM and RAW264.7 cells. In addition, LPS markedly increased mRNA expression and release levels of pro-inflammatory cytokines and mediators such as interleukin (IL)-1β, IL-6, tumor necrosis factor-α, cyclooxygenase-2, nitric oxide and prostaglandin E2, whereas these increases were substantially down-regulated by rhKAI1. Furthermore, LPS strongly increased expression of NF-κB p65 in the nuclei and phosphorylation of ERK, JNK, and p38 MAPK. However, nuclear translocation of NF-κB p65 and phosphorylation of JNK were greatly reversed in the presence of rhKAI1. Especially, rhKAI1 markedly suppressed expression of toll-like receptor (TLR4) and prevented binding of LPS with TLR4 through molecular docking predict analysis. Importantly, Glu 214 of rhKAI1 residue strongly interacted with Lys 360 of TLR4 residue, with a binding distance of 2.9 Å. Taken together, these findings suggest that rhKAI1 has an anti-inflammatory effect on LPS-polarized macrophages by interacting with TLR4 and down-regulating the JNK/NF-κB signaling pathway.