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Acid Polysaccharides from Panax Ginseng Inhibits Helicobacter pylori Adhesion
천황래 ( Hwang Rae Chun ),( Hoon Jai Chun ),( Chang Won Baeck ),( Sang Kyun Yu ),( Ji Hye Lee ),( Kyung Hyun Kim ),( Eun Kyung Park ),( Yong Sik Kim ),( Yoon Tae Jeen ),( Chang Sub Uhm ),( Hong Sik Lee ) 대한소화기학회 2004 대한소화기학회 추계학술대회 Vol.2004 No.-
Effects of 4-Nonlyphenol Exposure on P. olivaceus and S. schlegeli Vitellogenesis
정지현,Sun Hae Bae,Kyong Lan Baeck,Won Joon Shim,Dae-Jung Kim,Chang Hee Han 한국발생생물학회 2012 발생과 생식 Vol.16 No.1
The effects of the estrogenic compound 4-nonylphenol (4-NP) on vitellogenesis in juvenile olive flounder (Paralichthys olivaceus) and rockfish (Sebastes schlegeli) exposed continuously at 10, 50 and 100 ㎍ ℓ^(-1) levels for 7 days were compared. The expression of VTG mRNA level and protein using specific probes were examined. The levels of plasma estradiol-17β (E_2) and testosterone (T) were assessed by radioimmunoassay (RIA). Plasma E2 concentrations increased significantly in two female fish species exposed to 100 ㎍ ℓ^(-1) of 4-NP over concentrations in control fish. Plasma T concentrations increased in P. olivaceus. Four days after exposure, the level of VTG mRNA expression increased in P. olivaceus and S. schlegeli exposed to 20 ㎍ ℓ^(-1) of 4-NP. In addition, plasma VTG protein expression was seen in P. olivaceus and S. schlegeli. In S. schlegeli and P. olivaceus exposed to 4-NP, the changes were noticed mainly in hepatocytic vaculation after 7 days of exposure. Thus, 4-NP may disrupt vitellogenesis in immature fish both directly and indirectly via disrupted steroidogenesis and liver pathology. Immature S. schlegeli were the most sensitive to 4-NP exposure in vitellogenesis.
Effects of 4-Nonlyphenol Exposure on $P.$ $olivaceus$ and $S.$ $schlegeli$ Vitellogenesis
Jung, Jee-Hyun,Bae, Sun-Hae,Baeck, Kyong-Lan,Shim, Won-Joon,Kim, Dae-Jung,Han, Chang-Hee The Korean Society of Developmental Biology 2012 발생과 생식 Vol.16 No.1
The effects of the estrogenic compound 4-nonylphenol (4-NP) on vitellogenesis in juvenile olive flounder ($Paralichthys$ $olivaceus$) and rockfish ($Sebastes$ $schlegeli$) exposed continuously at 10, 50 and $100{\mu}g{\ell}^{-1}$ levels for 7 days were compared. The expression of VTG mRNA level and protein using specific probes were examined. The levels of plasma estradiol-17 ${\beta}(E_2)$ and testosterone (T) were assessed by radioimmunoassay (RIA). Plasma $E_2$ concentrations increased significantly in two female fish species exposed to $100{\mu}g{\ell}^{-1}$ of 4-NP over concentrations in control fish. Plasma T concentrations increased in $P.$ $olivaceus$. Four days after exposure, the level of VTG mRNA expression increased in $P.$ $olivaceus$ and $S.$ $schlegeli$ exposed to $20{\mu}g{\ell}^{-1}$ of 4-NP. In addition, plasma VTG protein expression was seen in $P.$ $olivaceus$ and $S.$ $schlegeli$. In $S.$ $schlegeli$ and $P.$ $olivaceus$ exposed to 4-NP, the changes were noticed mainly in hepatocytic vaculation after 7 days of exposure. Thus, 4-NP may disrupt vitellogenesis in immature fish both directly and indirectly via disrupted steroidogenesis and liver pathology. Immature $S.$ $schlegeli$ were the most sensitive to 4-NP exposure in vitellogenesis.
Immuno-SEM Reveals that Urease is associated with the Microvesicles on the Surface of Urease
김용식 ( Yong Sik Kim ),( Hoon Jai Chun ),( Hwang Rae Chun ),( Chang Won Baeck ),( Sang Kyun Yu ),( Sang Hoon Lee ),( Ka Hyung Han ),( Chang Hyun Park ),( Yoon Tae Jeen ),( Chang Sub Uhm ),( Hong Sik Lee 대한소화기학회 2004 대한소화기학회 추계학술대회 Vol.- No.-