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- 저자 : Xiao-Wei Kan (검색결과 4 건)
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XIAO-YING QI,KAN-YI PU,QU-LI FAN,DUO-FENG TANG,GUI-AN WEN,FREDDY Y. C. BOEY,LIAN-HUI WANG,WEI HUANG,HUA ZHANG 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2008 NANO Vol.3 No.2
A series of cadmium telluride (CdTe) nanocrystals were synthesized by a modified organometallic synthesis method at various reaction temperatures ranging from 130 to 250°C. In this method, octadecylamine (ODA) was introduced as an additional coordinating component to the mixture of trioctylphosphine oxide (TOPO) and trioctylphosphine (TOP). CdO was used as a precursor. The prepared CdTe nanocrystals were studied by the absorption and emission spectra as well as the powder X-ray diffraction (XRD) patterns. The result shows that besides the traditional continuous-growth mode observed frequently at relatively high reaction temperature, a discontinuous-growth mode was confirmed at the initial growth stage of CdTe nanocrystals, arising from the change of the absorption spectra of CdTe nanocrystals with the reaction time at relatively low reaction temperature. The structures of CdTe nanocrystals, e.g., the cubic zinc blende structure at 160°C and the hexagonalwurtzite structure at 250°C, were characterized by XRD.
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Fei Hu,Kan Ye,Xiao-Fang Tu,Yu-Jie Lu,Kiran Thakur,Zhao-Jun Wei 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.3
In order to explore the function of heat shock proteins during thermal stress in rice weevil, Sitophilus oryzae, four heat shock protein genes were cloned and characterized. These heat shock protein genes (hsps) were named as Sohsp70–1, Sohsp70–2, Sohsc70, and Sohsp90, respectively. These hsps showed high sequence conservation with the maximum identity with hsps of Tribolium castaneum and other insects. All the four genes showed the highest mRNA expression in pupal stage and the lowest levels in larval stage. The induced expression of the two Sohsp70s (Sohsp70–1 and Sohsp70–2) were reached to the highest levels (15.59-fold and 12.66-fold) after 2 h of incubation at 37 °C, respectively. Expression of Sohsp90 not only was significantly elevated by heat stress but also by cold stress. Whereas, expression level of Sohsc70 was not induced either by heat or cold stress. Furthermore, for rapid heat hardening, the expression levels of Sohsp70–1, Sohsp70–2, Sohsc70 and Sohsp90 were observed as 2.57, 2.53, 3.33 and 2.33-fold higher than control, respectively; for rapid cold hardening, the expression levels of Sohsp70–1, Sohsp70–2, Sohsc70 and Sohsp90 were reported as 2.27, 3.02, 3.37 and 2.23-fold higher than control, respectively. Hence, our results revealed that the four Sohsps were associated with temperature adaption under rapid heat or cold hardening.
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Glycine alleviated diquat-induced hepatic injury via inhibiting ferroptosis in weaned piglets
Hua Hongwei,Xu Xiao,Tian Wei,Li Pei,Zhu Huiling,Wang Wenjun,Liu Yulan,Xiao Kan 아세아·태평양축산학회 2022 Animal Bioscience Vol.35 No.6
Objective: The beneficial effects of glycine were tested in piglets with diquat-induced hepatic injury. Methods: Thirty-two piglets were assigned by a 2×2 factorial experimental design including glycine supplementation and diquat challenge. After 3 weeks of feeding with a basic diet or a 1% glycine supplemented diet, piglets were challenged with diquat or saline. After 1 week later, the piglets were slaughtered and samples were collected. Results: Our results indicated that glycine alleviated diquat induced morphological hepatic injury, decreased the activities of plasma alanine aminotransferase, aspartate aminotransferase and glutamyl transpeptidase in the piglets under diquat challenge, and increased total antioxidant capacity and antioxidative enzyme activity significantly. Adding glycine enhanced the concentrations of hepatic adenosine triphosphate and adenosine diphosphate. Transmission electron microscope observation showed that diquat induced clear hepatocytes ferroptosis and its effect could be alleviated by glycine to a certain degree. Moreover, glycine significantly affected mRNA and protein expression of ferroptosis-related signals in the liver. Conclusion: These results demonstrated that glycine attenuated liver damage via inhibiting ferroptosis. Objective: The beneficial effects of glycine were tested in piglets with diquat-induced hepatic injury.Methods: Thirty-two piglets were assigned by a 2×2 factorial experimental design including glycine supplementation and diquat challenge. After 3 weeks of feeding with a basic diet or a 1% glycine supplemented diet, piglets were challenged with diquat or saline. After 1 week later, the piglets were slaughtered and samples were collected.Results: Our results indicated that glycine alleviated diquat induced morphological hepatic injury, decreased the activities of plasma alanine aminotransferase, aspartate aminotransferase and glutamyl transpeptidase in the piglets under diquat challenge, and increased total antioxidant capacity and antioxidative enzyme activity significantly. Adding glycine enhanced the concentrations of hepatic adenosine triphosphate and adenosine diphosphate. Transmission electron microscope observation showed that diquat induced clear hepatocytes ferroptosis and its effect could be alleviated by glycine to a certain degree. Moreover, glycine significantly affected mRNA and protein expression of ferroptosis-related signals in the liver.Conclusion: These results demonstrated that glycine attenuated liver damage via inhibiting ferroptosis.
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