• Title/Summary/Keyword: 12 Jung-kyung

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DIFFERENTIAL ROLES OF PROSTAGLANDIN E$_2$ AND 15-DEOXY-Δ12,14-PGJ$_2$ IN THE NITROSATIVE PC12 CELL DEATH

  • Lim, So-Young;Jang, Jung-Hee;Na, Hye-Kyung;Surh, Young-Joon
    • Proceedings of the Korean Society of Toxicology Conference
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    • 2002.11b
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    • pp.187-187
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    • 2002
  • Recent studies suggest that inflammatory events are implicated in a variety of human diseases including cancer and neurodegenerative diseases, and non-steroidal anti-inflammatory drugs have beneficial effects in treatment or prevention of these disorders.(omitted)

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Structure of Three New Terpenoids, Spiciformisins a and b, and Monocyclosqualene, Isolated from the Herbs of Ligularia fischeri var. spiciformis and Cytotoxicity

  • Lee, Kyung-Tae;Koo, Sung-Ja;Jung, Seung-Hee;Choi, Jong-Won;Jung, Hyun-Ju;Park, Hee-Juhn
    • Archives of Pharmacal Research
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    • v.25 no.6
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    • pp.820-823
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    • 2002
  • The diethylet er fraction from the leaves extract of Ligularia fischeri var. spiciformis (Compositae) was subjected to silica gel column chromatography and yielded three new terpenoids named spiciformisin a (1), spiciformisin b (3), and monocyclosqualene (2). Acyclic diterpenes, spiciformisin a and -b, were established as 3,7,11,15-tetramethyl-1,3(20)-hexadecadiene and 3,7,11,15-tetramethyl-1,3,6,10,14-hexadecapentaene (IUPAC), respectively. A monocyclic triterpene, monocyclosqualene, were determined as [3,8,12,16,16-pentamethyl-(3,7,11,15-hexadecatetraenyl)]-3,3,5-trimethyl-1-cyclohexene. The structures were determined on the basis of NMR and MS analysis. Spiciformicin b showed potent cytotoxicity ($IC_{50},{\;}<9.7{;\}{\mu\textrm{g}}/ml$ against HL-60) in contrast to no cytotoxicity ($IC_{50},{\;}>200{\;}}{\mu\textrm{g}}/ml against HL-60 cells) of spiciformicin a with a cis-conjugated dienyl diexomethylene.

Two Cases of Rhabdomyolysis after Excessive Exercise (과도한 운동으로 인한 횡문근융해증 2례)

  • Yi, Jung-Bin;Park, Sung-Shin;Kim, Sung-Do;Cho, Byoung-Soo
    • Childhood Kidney Diseases
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    • v.12 no.2
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    • pp.256-261
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    • 2008
  • Rhabdomyolysis is a syndrome involving the breakdown of skeletal muscle causing myoglobin and other intracellular proteins and electrolytes to leak into the circulation. There are various causes of acute rhabdomyolysis in childhood, such as direct trauma to muscle, muscle necrosis from ischemia, inflammation in muscle, or exposure to drugs and toxins. The most-important complication of this disorder is acute renal failure (ARF). However, the contributing factors to the development of ARF in children with rhabdomyolysis remain obscure. We report two cases of rhabdomyolysis after excessive exercise.