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RISS 인기검색어
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- 저자 : Guijie Zhu (검색결과 2 건)
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Effect of Resistant Starch on HCl/ethanol-induced Gastric Injury in Rats
Qian, Yu,Li, Guijie,Zhu, Kai,Sun, Peng,Feng, Xia,Zhao, Xin The Korean Society for Applied Biological Chemistr 2013 Applied Biological Chemistry (Appl Biol Chem) Vol.56 No.6
Three types of resistant starch (RS) products were purchased for the evaluation of gastric injury preventive effect in Sprague-Dawley rats. We used an animal model to check for gastric injury preventive activities of these RS products in vivo. RS3 reduced the levels of serum proinflammatory cytokines of IL-6 and TNF-${\alpha}$ as compared to those of RS2 and RS4. The gastric secretion volumes from high to low order were control rats, RS2-treated rats, RS4-treated rats, RS3-treated rats, and normal rats, whereas pH levels of gastric juice showed the opposite trend. The gastric injury level was significantly decreased by RS, demonstrating its anti-inflammatory properties, with RS3 showing the best anti-inflammatory effect. Gastric tissues of RS3 group rats showed significantly decreased mRNA and protein expression levels of inflammation-related genes of iNOS, COX-2, TNF-${\alpha}$, and IL-$1{\beta}$ compared with the control group, as shown by RT-PCR and Western blot analyses. These results suggest that RS shows a gastric injury preventive effect, with RS3 showing the best inhibitory effect on gastric injury.
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Ki-jeong Kim,Yong Han,Junfa Zhu,Seulki Roh,Li Liu,Guijie Zhu,Wuyou Fu,Haibin Yang 한국물리학회 2016 Current Applied Physics Vol.16 No.9
In this paper, a new thin film photocatalysts of Ti/TNT/N-I-P/NaTaO3 (the nanostructures is Ti/TiO2/TiO2- PbS-NiO/NaTaO3) is designed for photocatalytic water splitting. This photocatalysts can separate the evolution gas of H2 and O2 into the different sides of the Ti substrate. It is because that the p-i-n junction can separate and transport the photogenerated electrons and holes to their opposing reaction centers. Moreover, these thin film photocatalysts can be recycled again. Which is different from traditional powdered photocatalysts. The photocatalytic activities for water splitting show that the amounts of evolved gas of Ti/TNT/N-I-P/NaTaO3 is 8.73 mmol/h cm2 under high-pressure mercury lamp illuminations, which is 7 times higher than that of Ti/NaTaO3 thin film photocatalysts. Two aspects can contribute to this performance: the one is the structure of N-I-P/NaTaO3; the other one is electrical conduction layer TNT. This study provides a new insight into synthesis of thin film photocatalysts to liberate H2 and O2 separately from H2O.
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