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Do Hang,Hye-Sook Choi,Se-Chan Kang,Kyung-Ran Kim,Eun-Soo Sohn,Mi-Hyun Kim,Suhkneung Pyo,Eunwha Son 한국식품영양과학회 2005 Preventive Nutrition and Food Science Vol.10 No.4
Fucoidans, high-molecular-weight sulfated polysaccharides extracted from brown seaweeds, have various biological activities. Here we examined whether fucoidan could increase the immunomodulation and proliferation capacity of cells in vitro. When peritoneal macrophages were treated with various concentrations of fucoidan (1~100 μg/mL) for 24 hours, NO production was significantly increased. In addition, exposure of macrophages to 10 μg/mL of fucoidan induced a phagocytic activity. Treatment of neuroblastoma cells (SK-N-SH) with fucoidan enhanced cell proliferation and NO production in a concentration-dependent manner. These results indicate that fucoidan has both immunomodulatory and cell proliferative properties, and may thus be a a candidate for development as an immunomodulating agent.
Clinical Analysis of Novalis Stereotactic Radiosurgery for Brain Metastases
Gu, Hae-Won,Sohn, Moon-Jun,Lee, Dong-Joon,Lee, Hye-Ran,Lee, Chae-Heuck,Whang, C.-Jin The Korean Neurosurgical Society 2009 Journal of Korean neurosurgical society Vol.46 No.3
Objective : The authors analyzed the effectiveness and therapeutic response of Novalis shaped beam radiosurgery for metastatic brain tumors, and the prognostic factors which influenced the outcome. Methods : We performed a retrospective analysis of 106 patients who underwent 159 treatments for 640 metastatic brain lesions between January 2000 and April 2008. The pathologies of the primary tumor were mainly lung (45.3%), breast (18.2%) and GI tract (13.2%). We classified the patients using Radiation Therapy Oncology Group Recursive Partitioning Analysis (RPA) and then analyzed the survival and prognostic factors according to the Kaplan Meier method and univariate analysis. Results : The overall median actuarial survival rate was 7.3 months from the time of first radiosurgery treatment while 1 and 2 year actuarial survival estimates were 31% and 14.4%, respectively. Median actuarial survival rates for RPA classes I, II, and III were 31.3 months, 7.5 months and 1.7 months, respectively. Patients' life spans, higher Karnofsky performance scores and age correlated closely with RPA classes. However, sex and the number of lesions were not found to be significantly associated with length of survival. Conclusion : This result suggests that Novalis radiosurgery can be a good treatment option for treatment of the patients with brain metastases.
Hang, Do,Choi, Hye-Sook,Kang, Se-Chan,Kim, Kyung-Ran,Sohn, Eun-Soo,Kim, Mi-Hyun,Pyo, Suhkneung,Son, Eun-Wha The Korean Society of Food Science and Nutrition 2005 Preventive Nutrition and Food Science Vol.10 No.4
Fucoidans, high-molecular-weight sulfated polysaccharides extracted from brown seaweeds, have various biological activities. Here we examined whether fucoidan could ncrease the immunomodulation and proliferation capacity of cells in vitro. When peritoneal macrophages were treated with various concentrations of fucoidan $(1\~100{\mu}g/mL)$ for 24 hours, NO production was significantly increased. In addition, exposure of macrophages to $10{\mu}g/mL$ of fucoidan induced a phagocytic activity. Treatment of neuroblastoma cells (SK-N-SH) with fucoidan enhanced cell proliferation and NO production in a concentration-dependent manner. These results indicate that fucoidan has both immunomodulatory and cell proliferative properties, and may thus be a candidate for development as an immunomodulating agent.
Back, Ka-Yeon,Sohn, Hye-Ran,Hou, Ching T.,Kim, Hak-Ryul American Chemical Society 2011 Journal of agricultural and food chemistry Vol.59 No.17
<P>Microbial conversions of unsaturated fatty acids often generate polyhydroxy fatty acids, giving them new properties such as higher viscosity and reactivity. A bacterial strain <named-content content-type='genus-species' xlink:type='simple'>Pseudomonas aeruginosa</named-content> (PR3) has been intensively studied to produce mono-, di-, and trihydroxy fatty acids from different 9-cis-monoenoic fatty acids such as oleic acid, ricinoleic acid, and palmitoleic acid. However, from the results and the postulated similar metabolic pathways involved in these transformations, it was assumed that the enzyme system involved in transformation of the monoenoic fatty acid by strain PR3 could utilize fatty acids with different chain lengths and locations of the double bond. In this study was used as a substrate for bioconversion by strain PR3 eicosenoic acid (C20:1, ω-9) containing a singular cis double bond at different positions from the carboxyl end as oleic acid, and it was confirmed that PR3 could produce a novel 9,12-dihydroxy-10(<I>E</I>)-eicosenoic acid (DED) with 6.2% yield from eicosenoic acid. The structure of DED was confirmed using GC-MS, FTIR, and NMR analyses. DED production was maximized at 72 h after the substrate was added to the 24 h culture. Some other nutritional factors were also studied for optimal production of DED.</P>
Ellamar, Joel B.,Sohn, Hye-Ran,Kim, Hak-Ryul Institute of Agricultural Science and Technology 2013 慶北大農學誌 Vol.31 No.1
As a specialty oil, furan fatty acids have gained special attentions since they are known to play important roles in biological systems including human. Although several studies reported chemical synthesis of furan fatty acids, their synthesis consisted of complicated chemical multistep with chemical catalysts. Recently, a simple one-step heat treatment method was developed to produce a novel furan fatty acid, 7,10-epoxy-octadeca-7,9-dienoic acid (7,10-EODA) from a dihydroxyl fatty acid 7,10-dihydroxy-8(E)-octadecenoic acid (DOD). In this report we studied about optimization of environmental conditions for the maximum production of 7,10-EODA from DOD by heat treatment. Production of 7,10-EODA was maximized at over $85^{\circ}C$ for at least over 48 hour in hexane. Solvent volume for maximum production should be over 300 mL per 10 mg DOD.
Joel B. Ellamar,Hye-Ran Sohn,Hak-Ryul Kim 경북대학교 농업생명과학대학 2013 Current Research on Agriculture and Life Sciences Vol.31 No.1
As a specialty oil, furan fatty acids have gained special attentions since they are known to play important roles in biological systems including human. Although several studies reported chemical synthesis of furan fatty acids, their synthesis consisted of complicated chemical multistep with chemical catalysts. Recently, a simple one-step heat treatment method was developed to produce a novel furan fatty acid, 7,10-epoxy-octadeca-7,9-dienoic acid (7,10-EODA) from a dihydroxyl fatty acid 7,10-dihydroxy-8(E)-octadecenoic acid (DOD). In this report we studied about optimization of environmental conditions for the maximum production of 7,10-EODA from DOD by heat treatment. Production of 7,10-EODA was maximized at over 85℃ for at least over 48 hour in hexane. Solvent volume for maximum production should be over 300 mL per 10 mg DOD.