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Mass and energy of erupting plasma associated with a coronal mass ejection in X-rays and EUV

  • Lee, Jin-Yi;Raymond, John C.;Reeves, Katharine K.;Moon, Yong-Jae;Kim, Kap-Sung
    • The Bulletin of The Korean Astronomical Society
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    • v.40 no.1
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    • pp.85.1-85.1
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    • 2015
  • We investigate the mass and energy of erupting plasma observed in X-rays and EUV, which is associated with a coronal mass ejection (CME) and an X-class flare. The erupting plasma was observed by both the X-ray telescope (XRT) on Hinode and the Atmospheric Imaging Assembly (AIA) on Solar Dynamic Observatory (SDO). We estimate the emission measures of the erupting plasma using a differential emission measure method. The plasma erupts with a loop-like structure in X-ray and EUV. We estimate the mass of erupting plasma assuming a cylinder structure. In addition, we estimate the radiative loss, thermal conduction, thermal, and kinetic energies of the eruptive hot plasma. We find that the thermal conduction timescale is much shorter than the duration of the eruption. This result implies that additional heating during the eruption may be required to explain the hot plasma observations in X-rays.

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Induction of Apoptosis by a Combination of Paclitaxel and Carboplatin in the Presence of Hyperthermia

  • Huang, Tao;Gong, Wei-Hua;Li, Xiu-Cheng;Zou, Chun-Ping;Jiang, Guang-Jian;Li, Xu-Hui;Feng, Dian-Peng
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.1
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    • pp.81-85
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    • 2012
  • Purpose: To study enhancing effects of paclitaxel in the thermochemotherapy of osteosarcoma cell lines and related mechanisms. Materials and Methods: Paclitaxel and carboplatin were used alone or jointly on OS732 cell lines in the presence of hyperthermia. Inhibition of proliferation was measured by MTT assay and cellular changes were assessed with inverted phase contrast and fluorescence microscopy. Apoptosis was analyzed with flow cytometry (FCM) and Fas expression by immunocytochemistry. Results: At $43^{\circ}C$, one hour after the application of 10ug/ml paclitaxel and $5{\mu}g/ml$ carboplatin on OS732 cells jointly, the survival rate was 15.8% which was significantly lower than with $10{\mu}g/ml$ paclitaxel (45.8%) and $5{\mu}g/ml$ carboplatin (47.7%) respectively (P<0.01). Moreover, changes of morphology and apoptotic rates indicated that the apoptosis-inducing effect of combined application was also much enhanced, as evident also regarding Fas expression. Conclusion: Paclitaxel is conducive to thermochemotherapy of osteosarcoma cell lines, possibly accomplished by up-regulation of Fas expression with induction of apoptosis.

The Value of Acupuncture in Cancer Care (암 치료에서의 침술의 가치)

  • Choi, Jung-Eun;Cho, Chong-Kwan;Lee, Yeon-Weol;Yoo, Hwa-Seung;Lu, Weidong;Dean-Clower, Elizabeth;Doherty-Gilman, Anne;Rosenthal, David S.
    • Journal of Korean Traditional Oncology
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    • v.15 no.1
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    • pp.1-17
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    • 2010
  • Clinical research on acupuncture in cancer care is a new and challenging field in oncology. The results of clinical research will continue to provide clinically relevant answers for patients and oncologists. The evidence currently available has suggested that acupuncture is a safe and effective therapy to manage cancer and treatment related symptoms, while giving patients the ability to actively participate in their own care plan. The article explains the potential benefits of acupuncture and describes the difficulties in studying its effectiveness.

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Efficient Killing Effect of Osteosarcoma Cells by Cinobufacini and Cisplatin in Combination

  • Huang, Tao;Gong, Wei-Hua;Li, Xiu-Cheng;Zou, Chun-Ping;Jiang, Guang-Jian;Li, Xu-Hui;Qian, Hao
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.6
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    • pp.2847-2851
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    • 2012
  • Purpose: To study the killing effects on osteosarcoma cells of cinobufacini and cisplatin in combination and the related mechanisms so as to explore the chemotherapeutic method with integrated traditional Chinese and Western medicines. Methods: Cinobufacini and cisplatin were applied to OS732 cells singly or jointly and survival rates were measured by MTT assay. Changes in cellular shape were observed with inverted phase contrast and fluorescence microscopy and apoptosis rates were analyzed with flow cytometry (FCM). Immunocytochemistry were used to examine the Fas expression of OS732 cells. Results: The combination of cinobufacini and cisplatin had the effect of up-regulating Fas expression and inducing apoptosis. The survival rate of combined application of 100 ${\mu}g/ml$ cinobufacini and 1 ${\mu}g/ml$ cisplatin on OS-732 cells was significantly lower than with either of the agents alone (p<0.01). Changes in cellular shape and apoptotic rates also indicated the apoptosis-inducing effects of combined application were much enhanced. Conclusion: The combination of cinobufacini and cisplatin demonstrated strong killing effects on OS-732 cells which might be related to up-regulation of Fas expression.

Oxaliplatin Sensitizes OS Cells to TRAIL-induced Apoptosis Via Down-regulation of Mcl1

  • Huang, Tao;Gong, Wei-Hua;Li, Xiu-Cheng;Zou, Chun-Ping;Jiang, Guang-Jian;Li, Xu-Hui;Qian, Hao
    • Asian Pacific Journal of Cancer Prevention
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    • v.13 no.7
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    • pp.3477-3481
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    • 2012
  • Purpose: To investigate the killing effect on OS cells of a combination of oxaliplatin and TRAIL and related molecular mechanisms. Methods: TRAIL and oxaliplatin were applied to OS732 cells singly or jointly and survival inhibition rates were measured by MTT assay, changes of cellular shape being assessed with inverted phase contrast and fluorescence microscopy. Apoptotic rates were analyzed by flow cytometry (FCM) and immunocytochemistry was used to examine Mcl1 expression of OS732 cells. Results: The survival inhibition rate of combined application of $100{\mu}g/ml$ TRAIL and $1{\mu}g/ml$ oxaliplatin on OS-732 cells was significantly higher than that of either agent singly (p<0.01). Changes of cellular shape and apoptotic rates also indicated apoptosis-inducing effects of combined application to be much stronger than those of individual application. Oxaliplatin had the effect of down-regulating Mcl1 expression and sensitizing OS cells to TRAIL-induced apoptosis. Conclusion: A combination of TRAIL and oxaliplatin exerts strong killing effects on OS-732 cells which might be related to down-regulation of Mcl1 expression.