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Antioxidant and Cytotoxicity Effects of Luteolin
Jinny Park,Kyoung Ah Kang,Rui Zhang,Mei Jing Piao,Soyoon Park,Ju Sun Kim,Sam Sik Kang,Jin Won Hyun 한국독성학회 2006 Toxicological Research Vol.22 No.4
Flavonoids are polyphenolic compounds that are ubiquitous in plants. They have been shown to possess a variety of biological activities, such as antioxidant and anticancer. Reactive oxygen species (ROS) lead to damages of cellular molecules and it is the one of various factors to induce cancer. The one of flavonoids, Luteolin, was found to scavenge 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and intracellular reactive oxygen species (ROS). Moreover luteolin showed protection on hamster lung fibroblast cells (V79-4 cell) damage induced by H₂O₂. And then it was investigated whether it may show cytotoxicity effect against various cancer cells by MTT. Luteolin at 10 ㎍/㎖ showed the cell viability of 63.2%, 34.7%, 18.4% and 71.4% against NCI-H460, HeLa, U937 and MCF-7, respectively. As a result, luteolin shows more sensitive to U937 cells among the tested cancer cell lines. In summary, luteolin has antioxidant and cytotoxicity effect on various cancer cell lines.
Central nervous system blast crisis of chronic myeloid leukemia and treatment with dasatinib
( Hong Suk Park ),( Jinny Park ),( Young Saeng Kim ),( In Geun Park ),( Jun Sik Hong ),( Hee Kyong Ahn ),( Sun Jin Sim ),( Eun Kyoung Joe ),( Dong Bok Shin ),( Jae Hoon Lee ) 대한내과학회 2015 대한내과학회 추계학술발표논문집 Vol.2015 No.1
Chronic myeloid leukemia (CML) is a myeloproliferative disorder driven by the BCR-ABL1. Owing to the high efficacy of imatinib mesylate for CML in chronic phase, the frequency of the blast crisis is greatly reduced. Some CML cases develop extramedullary disease caused by infiltration of blast cells. However, the central nervous system (CNS) as an isolated site of extramedullary blast crisis is rare. Herein, we report case of dasatinib-based maintenance therapy for lymphoid blast crisis of the CNS in a patient with CML who was receiving imatinib mesylate therapy. In July 2012, a 55 years old man was diagnosed with Philadelphia chromosome positive CML in the chronic phase. Immediately, imatinib mesylate administration was initiated. Four months after the diagnosis, he complained of headache. On cerebrospinal fluid (CSF) examination, the CSF had increased number of WBCs (6289/iL); almost all WBCs were lymphoid cells. Brain MRI revealed abnormal leptomeningeal enhancement of the frontal lobes. In addition to a complete hematological, cytogenetic response and evidence of the absence of malignant lymphoblasts in the peripheral blood and bone marrow samples, these findings led to the diagnosis of isolated lymphoid blast crisis in CNS. Immediately, the patient was treated with scheduled intrathecal methotrexate, cerebrospinal radiotherapy and TKI dasatinib. Major molecular response was achieved after 4 months after treatment change, followed by matched related allogeneic peripheral blood SCT. During the course of dasatinib maintenance therapy, several follow-up tests were performed and persistently yielded results indicating complete hematologic, molecular, and cytogenetic responses. The patient was neurological symptom-free for 2 years. In addition, the abnormal enhancement of the frontal lobe observed on the initial brain MRI had disappeared. This report is meaningful of significance as because we used a minimal treatment of intrathecal chemotherapy, radiotherapy, allogeneic peripheral blood SCT and an oral TKI without using cytotoxic chemotherapy such as hyper-CyVAD.
The Outcomes of Hypertransfusion in Major ABO Incompatible Allogeneic Stem Cell Transplantation
Lee Se Hoon,Park Joon Oh,Jung Chul Won,Park Keunchil,Lee Kyoo Hyung,Lee Mark Hong,Lee Kyung Eun,Park Jinny,Kim Kihyun,Kim Won Seog,Im Young Hyuk,Kang Won Ki,Kim Seon Woo,Lee Je Hwan,Park Se Hoon 대한의학회 2004 Journal of Korean medical science Vol.19 No.1
Antioxidant Activity of Water Extract from the Cultured Mycelia of Phellinus Baumii
Jin Won Hyun,Jinny Park,Kyoung Ah Kang,Rui Zhang,Mei Jing Piao,Soyoon Park,Jin Seo Park,Young Kook Kim,Mun Chaul Rho,Hyun Sun Lee 대한암예방학회 2006 Journal of cancer prevention Vol.11 No.4
The antioxidant property of cultured mycelia of Phellinus baumii was investigated. The water-soluble extract isolated from these mycelia showed intracellular reactive oxygen species, 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and lipid peroxidation inhibitory activities. This radical scavenging activity of extract protected cell viability of Chinese hamster lung fibroblast (V79-4) cells exposed to H2O2. Furthermore, water extract reduced the apoptotic cells induced by H2O2, as demonstrated by the decreased number of sub G1 hypo-diploid cells and apoptotic body formation and it increased the activities of cellular antioxidant enzymes, superoxide dismutase and catalase. Taken together, these findings suggest that mycelia of P. baumii exhibit antioxidant property. (Cancer Prev Res 11, 329-335, 2006)