• 제목/요약/키워드: C-cell carcinoma

검색결과 544건 처리시간 0.027초

Anti-proliferation Effects of Isorhamnetin on Lung Cancer Cells in Vitro and in Vivo

  • Li, Qiong;Ren, Fu-Qiang;Yang, Chun-Lei;Zhou, Li-Ming;Liu, Yan-You;Xiao, Jing;Zhu, Ling;Wang, Zhen-Grong
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권7호
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    • pp.3035-3042
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    • 2015
  • Background: Isorhamnetin (Iso), a novel and essential monomer derived from total flavones of Hippophae rhamnoides that has long been used as a traditional Chinese medicine for angina pectoris and acute myocardial infarction, has also shown a spectrum of antitumor activity. However, little is known about the mechanisms of action Iso on cancer cells. Objectives: To investigate the effects of Iso on A549 lung cancer cells and underlying mechanisms. Materials and Methods: A549 cells were treated with $10{\sim}320{\mu}g/ml$ Iso. Their morphological and cellular characteristics were assessed by light and electronic microscopy. Growth inhibition was analyzed by MTT, clonogenic and growth curve assays. Apoptotic characteristics of cells were determined by flow cytometry (FCM), DNA fragmentation, single cell gel electrophoresis (comet) assay, immunocytochemistry and terminal deoxynucleotidyl transferase nick end labeling (TUNEL). Tumor models were setup by transplanting Lewis lung carcinoma cells into C57BL/6 mice, and the weights and sizes of tumors were measured. Results: Iso markedly inhibited the growth of A549 cells with induction of apoptotic changes. Iso at $20{\mu}g/ml$, could induce A549 cell apoptosis, up-regulate the expression of apoptosis genes Bax, Caspase-3 and P53, and down-regulate the expression of Bcl-2, cyclinD1 and PCNA protein. The tumors in tumor-bearing mice treated with Iso were significantly smaller than in the control group. The results of apoptosis-related genes, PCNA, cyclinD1 and other protein expression levels of transplanted Lewis cells were the same as those of A549 cells in vitro. Conclusions: Iso, a natural single compound isolated from total flavones, has antiproliferative activity against lung cancer in vitro and in vivo. Its mechanisms of action may involve apoptosis of cells induced by down-regulation of oncogenes and up-regulation of apoptotic genes.

Dosimetric advantages and clinical outcomes of simultaneous integrated boost intensity-modulated radiotherapy for anal squamous cell carcinoma

  • Sakanaka, Katsuyuki;Itasaka, Satoshi;Ishida, Yuichi;Fujii, Kota;Horimatsu, Takahiro;Mizowaki, Takashi;Sakai, Yoshiharu;Hiraoka, Masahiro
    • Radiation Oncology Journal
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    • 제35권4호
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    • pp.368-379
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    • 2017
  • Purpose: The purpose of this study was to explore the dosimetric difference between simultaneous integrated boost intensity-modulated radiotherapy (SIB-IMRT) and three-dimensional conformal radiotherapy (3DCRT), and the clinical outcomes of anal squamous cell carcinoma (ASCC) chemoradiotherapy featuring SIB-IMRT. Materials and Methods: This study included ten patients with ASCC who underwent chemoradiotherapy using SIB-IMRT with 5-fluorouracil and mitomycin C. SIB-IMRT delivered 54 Gy to each primary tumor plus metastatic lymph nodes and 45 Gy to regional lymph nodes, in 30 fractions. Four patients received additional boosts to the primary tumors and metastatic lymph nodes; the median total dose was 54 Gy (range, 54 to 60 Gy). We additionally created 3DCRT plans following the Radiation Therapy Oncology Group 9811 protocol to allow dosimetric comparisons with SIB-IMRT. Locoregional control, overall survival, and toxicity were calculated for the clinical outcome evaluation. Results: Compared to 3DCRT, SIB-IMRT significantly reduced doses to the external genitalia, bladder, and intestine, delivering the doses to target and elective nodal region. At a median follow-up time of 46 months, 3-year locoregional control and overall survival rates were 88.9% and 100%, respectively. Acute toxicities were treated conservatively. All patients completed radiotherapy with brief interruptions (range, 0 to 2 days). No patient experienced ${\geq}grade$ 3 late toxicity during the follow-up period. Conclusion: The dosimetric advantages of SIB-IMRT appeared to reduce the toxicity of chemoradiotherapy for ASCC achieving high locoregional control in the extended period.

Cytotoxicity and DNA Topoisomerases Inhibitory Activity of Constituents from the Sclerotium of Poria cocos

  • Li, Gao;Xu, Ming-Lu;Lee, Chong-Soon;Woo, Mi-Hee;Chang, Hyun-Wook;Son, Jong-Keun
    • Archives of Pharmacal Research
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    • 제27권8호
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    • pp.829-833
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    • 2004
  • The bioactivity-guided fractionation of the methylene chloride extract of the sclerotium of Poria cocos led to the isolation of (S)-(+)-turmerone (1), ergosterol peroxide (2), polyporenic acid C (3), dehydropachymic acid (4), pachymic acid (5), and tumulosic acid (6). Compounds 4-6 exhibited moderate cytotoxicities, with $IC_{50}$ values of 20.5, 29.1, and $10.4{\;}\mu\textrm{m}$, respectively, against a human colon carcinoma cell line. However, 3-6 not only showed inhibitory activities as potent as etoposide used as a positive control on DNA topoisomerase II (36.1, 36.2, 43.9 and 66.7% inhibition at a concentration of $20{\;}\mu\textrm{m}$, respectively), but also inhibition of DNA topoisomerase I (55.8, 60.7, 43.5, and 83.3% inhibition at a concentration of $100{\;}\mu\textrm{m}$, respec-tively).

HPV Infection and Cervical Abnormalities in HIV Positive Women in Different Regions of Brazil, a Middle-Income Country

  • Freitas, Beatriz C;Suehiro, Tamy T;Consolaro, Marcia EL;Silva, Vania RS
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권18호
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    • pp.8085-8091
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    • 2016
  • Human papillomavirus is a virus that is distributed worldwide, and persistent infection with high-risk genotypes (HR-HPV) is considered the most important factor for the development of squamous cell cervical carcinoma (SCC). However, by itself, it is not sufficient, and other factors may contribute to the onset and progression of lesions. For example, infection with other sexually transmitted diseases such as human immunodeficiency virus (HIV) may be a factor. Previous studies have shown the relationship between HPV infection and SCC development among HIV-infected women in many regions of the world, with great emphasis on low- and middle-income countries (LMICs). Brazil is considered a LMIC and has great disparities across different regions. The purpose of this review was to highlight the current knowledge about HPV infection and cervical abnormalities in HIV+ women in Brazil because this country is an ideal setting to evaluate HIV impact on SCC development and serves as model of LMICs and low-resource settings.

면양태아피부추출액(緬羊胎兒皮膚抽出液)의 세포면역(細胞免疫) 기능저하(機能低下) 효과(效果)에 관(關)한 연구(硏究) (Immunosuppression Associated with Ovine Foetal Skin Extracts)

  • 전무형
    • 농업과학연구
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    • 제11권2호
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    • pp.344-351
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    • 1984
  • 3M KCI로 면양태아피부조직(緬羊胎兒皮膚組織) 추출액(抽出液)을 제조(製造)하여 정상면양(正常緬羊)에 접종(接種)했을 때 접종(接種) 면양(緬羊)의 혈청(血淸)에는 임파구아회식능(淋巴球芽會殖能)(Iymphocyte blastogenicity)을 조지(阻止)시키는 효과(效果)가 있었다. 임파구(淋巴球)에서 보다 면양인상세포암(緬羊鱗狀細胞癌) 조직항원(組織抗原)에 감작(感作)된 임파구(淋巴球)에서 더욱 현저히 나타났다(P<0.001). Crude 3M KCI 추출액(抽出液)을 Sephadex G-150 Column으로 분획(分劃)했을 때 4개의 protein peak 가 나타났으며, 생체내(生體內)에서나 시험관내(試驗管內)에서 세포면역조지효과(細胞免疫阻止效果)를 나타내는 것은 Peak IV였다. 면양태아피부조직(緬羊胎兒皮膚組織) 추출액(抽出液)과 면양린상세포암조직(緬羊鱗狀細胞癌組織) 추출액(抽出液)의 세포면역기능(細胞免疫機能) 저하효과(低下效果)는 동일한 면역저하인자(免疫低下因子)(immunosuppressor)에 의해서 이뤄진다고 고찰(考察)된다.

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Identification of troglitazone responsive genes: induction of RTP801 during troglitazone-induced apoptosis in Hep 3B cells

  • Kim, Jin-Oh;Kim, Ji-Young;Kwack, Mi-Hee;Hong, Su-Hyung;Kim, Moon-Kyu;Kim, Jung-Chul;Sung, Young-Kwan
    • BMB Reports
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    • 제43권9호
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    • pp.599-603
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    • 2010
  • Troglitazone is an anti-diabetic agent that improves hyperglycemia by reducing peripheral insulin resistance in type II diabetic patients. Troglitazone has been shown to cause growth inhibition of various normal and cancerous cells. However, the molecular mechanism by which troglitazone affects the growth of these cancer cells remains unclear. Here, we report that troglitazone treatment of Hep 3B human hepatocellular carcinoma cells resulted in dose-dependent growth inhibition. Analysis of cell cycle distribution by flow cytometry showed that the number of apoptotic cells was increased in a dose-dependent manner in response to troglitazone treatment. cDNA microarray analysis showed a number of differentially expressed genes in response to troglitazone. Among the upregulated genes, hypoxia-inducible factor 1 (HIF-1)-responsive RTP801 was induced in a dose-dependent manner. We also observed HIF-1 accumulation by immnocytochemistry after troglitazone treatment. These results strongly suggest that RTP801 might be involved in troglitazone-induced apoptosis in Hep 3B cells.

비인두암의 국소 종양 치유와 생존율에 관한 예후 인자 분석 (An Analysis on Factors Affecting Local Control and Survival in Nasopharvngeal Carcinoma)

  • 정웅기;조재식;박승진;이재홍;안성자;남택근;최 찬;노영희;나병식
    • Radiation Oncology Journal
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    • 제17권2호
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    • pp.91-99
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    • 1999
  • 목적 :비인두암 환자에서 항암화학요법과 방사선치료 후 국소종양제어율, 생졸율, 무병생존율에 미치는 예후 인자를 알아보고자 하였다. 대상 및 방법 : 1986년 7월부터 1996년 6월까지 약 10년간 전남대학교병원에서 비인두암으로 확진되어 근치적 목적으로 치료를 받은 47명의 환자를 대상으로 후향적 분석을 시행하였다. 대상 환자의 연령 분포는 16세에서 80세까지였고 중앙값은 52세였다. 성별 분포는 남자가 33명(70$\%$), 여자가 14명(30$\%$)이었다. WHO의 기준에 의한 조직학적 유형은 제1형(제라틴형성 편평세포암)이 3례(6$\%$), 제2형(비케라틴형성 편평세포암)이 30례(64$\%$), 제3형(미분화암)이 13례(28$\%$)였고 나머지 1례(2$\%$)는 조직학적 유형이 알려지지 않았다. 미국암합동위원회(1997)의 병기분류법에 따라 후향적으로 다시 분류한 병기는 71, T2a, T2b, 73, 74에서 각각 11례(23$\%$), 6례(13$\%$), 9례(19$\%$), 7례(15$\%$), 14례(30$\%$)였다. 그리고 림프절 침범 상태는 NO, Nl, N2, N3에서 각각 7례(15$\%$), 14례(30$\%$), 21례(45$\%$), 5례(l0$\%$,) 있었다. 병기군별 분포는 Stage 1, IIA, IIB, III, IVA, IVB에서 각각 2례(4$\%$), 2례(4$\%$), 10례(21$\%$), 14례(30$\%$), 14례(30$\%$), 5례(11$\%$) 있었다. 방사선치료 전에 항암제 치료를 받은 환자는 42례이며 5례는 항암제 치료가 시행되지 않았다. 방사선치료는 선형가속기의 6MV와 10MV X-ray 및 9MeV 전자선을 사용하였으며 원발 병소에 조사된 총방사선량은 6120-7920cGy(중앙값 : 7020cGy)였다. 항암화학요법 은 Cisplatin+5-Fluorouracii(25명), Cispiatin+pepleomycin(17명)으로 1회에서 3회까지 시행하였다. 국소종양제어율, 생졸율, 무병생존율을 Haplan-Meier법에 의하여 산출하였으며 두 군간의 생존율의 차이는 GeneraliBed t띤cokon test를 이용하여 검증하였다. 영향을 주는 인자의 다변량분석에는 Cox 모델을 이용하였다. 결과 : 국소종양 제어율은 2년에 89$\%$, 5년에 81$\%$이었다. 5년 생존율을 60$\%$,(범위: 6-132개월, 중앙값: 106개월)이었다. 예후에 영향을 미치는 위험 일자로 연렬, 성별, 뇌신경침범, 병리조직학적 유형, 병기군, 항암화학요법, 항암화학 요법과 방사선치료 사리의 간격, 방사선량, 방사선치료기간을 다변량분석에 포함시켰다. 국소종양제어율에는 뇌신경침범(P=0.004)만이 의의 있는 것으로 나타났다. 생존율과 무병생존율에는 병기군(P=0.006, P=0.006)과 총방사선량 (P=0.012, P=0.008)이 의의 있는 것으로 나타났다. 치료 후 합병증은 구강건조증, 치아손상, 이증상 등이 많았으며 2례의 갑상선기능저하증이 있었다. 결론 : 비인두암에서 예후에 영향을 미치는 인자로서 국소종양제어율은 뇌신경침범 여부가, 생존율 및 무병생존율에는 총방사선량과 병기군, 특히 N 병기가 의의 있는 것을 알 수 있었다. 사용된 항암화학요법과 방사선치료는 심각한 부작용이 없이 효과적으로 이용될 수 있음을 알 수 있었다.

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Changes in Hematological Parameters with Pegylated Interferon in Chronic Hepatitis C Virus Infected Patients

  • Rehman, Aziz Ur;Ali, Farhad;Ali, Mashhood;Alam, Ibrar;Khan, Abdul Wali
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권5호
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    • pp.2485-2490
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    • 2016
  • The liver is one of the most common sites of cancer in the world, hepatocellular carcinoma (HCC) predominating. HCC is the sixth most common cancer and the third leading cause of cancer related death overall. Hepatitis C is a major risk factor and HCV is a rapid spreading virus which has become a problem globally, including in Pakistan. Interferon alpha therapy is used against HCV disease to regulate cell reproduction and to boost the immune system. In minute amounts interferon alpha is produced naturally by the immune system in HCV patients in response to hepatitis C virus and binds to receptors in the target cells and starts transcription of 20-30 genes due to which it develops an antiviral influence. Interferon is also administered artificially to overcome HCV disease and remove the biological effect of the virus from the infected site. The use of interferon or Peg-IFN plus Ribavirin treatment is also associated with adverse effects on body. For the current study, a convenient sample of 156 HCV positive patients of both males and females were taken. To collect blood CP and ALT, a reduction of level data and other important information were collected from the patients at regular intervals. Findings were 11.4 % in the red blood cells (RBC), 9.64 % in the total leukocyte count (WBC), 8.4 % in the hemoglobin levels (HB), 30.3 % in the platelet (Plt) count in both sexes. There was significant reduction in ALT levels due to Pegylated interferon plus ribavirin therapy. Hence strict haemotological monitoring of blood CP and ALT levels is necessary at regular intervals to reduce severe side effects which may lead to morbidity and mortality.

병기 T1 성문암의 방사선치료 (Radiation Therapy in T1 Glottic Cancer)

  • 정은지;이상욱;이창걸;김귀언;김광문;홍원표
    • 대한두경부종양학회지
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    • 제12권1호
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    • pp.26-31
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    • 1996
  • Radiation therapy in T1 glottic cancer offers an excellent cure rate with preservation of voice. From 1983 to 1992 eighty nine patients with TNM staged T1N0M0 invasive squamous cell carcinoma of the glottis were treated at the Dept. of Radiation Oncology, Yonsei Cancer Center, Yonsei University. There were 84 men and 5 women with median age of 59 years. All patients were treated either with Co-60 teletherapy unit or 4MV linear accelerator with an median dose of 6400 cGy(6000-7000 cGy), 200 cGy per day, 5 days in a week. Fourteen local failures have been observed and the median time to local recurrence was 17 months. There were no nodal failure without local recurrence or distant metastases. The 5 year local control rate was 84.3%. The 5 year actuarial surivival rate and the 5 year disease free survival rate were 89.2%, 87.5%, respectively. The 5 year actuarial survival rate and the 5 year disease free survival rate of the nineteen patients with anterior commissure involvement were 77.8% and 74.5% which were lower than those of seventy patients without anterior commissure involvement(91.6%, 90.6%)(p < 0.05). Among the several influencing factors, anterior commissure involvement was the significant prognostic foctor. Final local control rate, taking into account the salvage surgery, was 89.9% at 5 years.

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Safety of Brucea javanica and Cantharidin Combined with Chemotherapy for Treatment of NSCLC Patients

  • Ji, Zhu-Qing;Huang, Xin-En;Wu, Xue-Yan;Liu, Jin;Wang, Lin;Tang, Jin-Hai
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권20호
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    • pp.8603-8605
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    • 2014
  • Objective: To assess the safety of Brucea javanica and Cantharidin combined with chemotherapy in treating patients with non-small-cell lung carcinoma. Method: A consecutive cohort of patients with NSCLC were divided into four groups: experimental group A treated with Brucea javanica injection combined with chemotherapy; experimental group B with Cantharidin injection combined with chemotherapy; experimental group C treated with Brucea javanica and Cantharidin injection combined with chemotherapy; and the control group receiving only chemotherapy. After more than two courses of treatment, safety, quality of life and side effects were evaluated. Results: The incidences of myelosuppression in groups A, B and C were lower than that in Control group (p<0.05), but without significant differences among A, B and C. Adverse effects on the gastrointestinal tract also were lower than in controls (p<0.05) without variation amnog the combined treatment groups. Conclusions: Brucea javanica or Cantharidin combined with chemotherapy could in both cases improve quality of life in our cohort of NSCLC patients without any increase in toxicity. However, further clinical experiments should be conducted to evaluate the efficacy of Brucea javanica and Cantharidin combined with chemotherapy for patients with NSCLC.