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( Xiaojing Li ),( Zhifeng Li ),( Zhao Han ),( Ling Zhang ),( Zhao Liu ),( Baoguo Liu ) 대한피부과학회 2018 Annals of Dermatology Vol.30 No.5
Background: Actinic keratosis (AK) was an intraepidermal tumor which caused by ultraviolet irradiation-induced skin damage. Objective: The aim was to screen biomarkers for development of skin disease by comparing the gene expression profiles between cutaneous squamous cell carcinoma (CSCC) and AK. Methods: GSE45216 with 30 cutaneous squamous cell carcinoma patients and 10 actinic keratosis patients were downloaded and significance analysis of microarrays was processed to screen differently expressed genes (DEGs). Fisher’s exact test was processed for DEGs enrichment. Pathway relationship network systematically reflected the signal conduction and synergism between enriched pathways based on Kyoto Encyclopedia of Genes and Genomes database. Gene co-expression network was constructed according to gene expression data. Quantitative real- time-PCR was used to verify screened biomarkers. Results: Total 410 DEGs were screened and enriched into various functions, such as signal transduction and negative regu-lation of apoptotic process. They also participated into cytokine- cytokine receptor interaction and focal adhesion. The pathway relationship network was constructed with 27 nodes. Hub nodes with higher degree of this network were mitogen-activated protein kinase signaling pathway and apoptosis. The gene co-expression network was constructed with 39 nodes. Thereinto, hub node was ELOVL fatty acid elongase. The expression levels of ELOVL4 and HPGD were significantly higher in CSCC samples than that in AK samples, while the expression levels of INHBA and LAMC2 in CSCC samples were significantly lower than that in AK samples. Conclusion: These screened genes, including ELOVL4, HPGD, INHBA and LAMC2, played important roles in transformation from AK to CSCC. (Ann Dermatol 30(5) 536∼543, 2018)
Ning Li,Fuping Zheng,Menglan Liang,Baoguo Sun 한국식품과학회 2010 Food Science and Biotechnology Vol.19 No.4
Volatile components of Chinese Sinkiang camel-naizi (CSCN) were analyzed using solid phase microextraction-gas chromatography/mass spectrometry (SPME-GC/MS). A total of 45 volatile compounds were identified by using 3 fibers, including 17 alcohols, 4aldehydes, 13 acids, 8 esters, 1 sulfur-containing compound,1 lactone, and 1 ketone. Among all the compounds identified, various alcoholic compounds accounted for 78.91% of the total volatiles, and the amount of various esters was only next to that of alcohols, which accounted for 15.01% of the total volatiles. The content of acids,lactone, aldehydes, ketone, and sulfur-containing compound accounted for 6.08%. All of these volatiles constituted the characteristic flavor of raisin-like, fruity, sweet, cheesy, and yogurt-like note of CSCN. The extraction performances of 3 types of SPME fibers (75 μm CAR/PDMS, 65 μm PDMS/DVB, and 50/30 μm DVB/CAR/PDMS) were compared in this study. Of the 3 fibers, the DVB/CAR/PDMS fiber extracted the most volatiles, and the CAR/PDMS fiber the least. The DVB/CAR/PDMS fiber showed the best performance in trapping compounds of CSCN with different polarities.
Quasiclassical Trajectory Calculations for the Reaction Ne + H2 + → NeH+ + H
Hui Li,Juna Chen,Yuliang Wang,Baoguo Tian,Liangsheng Qu 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.12
Quasiclassical trajectory (QCT) calculations of Ne + H2+ reaction have been carried out on the adiabatic potential energy surface of the ground state 12 A'. The reaction probability of the title reaction for J = 0 has been calculated, and the QCT result is consistent with the previous quantum mechanical wave packet result. Quasiclassical trajectory calculations of the four polarization-dependent differential cross sections have been carried out in the center of mass (CM) frame. The P(θr), P(φr) and P(θr, φr) distributions, the k−k'−j'correlation and the angular distribution of product rotational vectors are presented in the form of polar plots. Due to the well in 12 A' PES, the reagent vibrational excitation has greater influence on the polarization of the product rotational angular momentum vectors j' than the collision energy
Wang, Yuliang,Tian, Baoguo,Qu, Liangsheng,Chen, Juna,Li, Hui Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.12
Quasiclassical trajectory (QCT) calculations of Ne + ${H_2}^+$ reaction have been carried out on the adiabatic potential energy surface of the ground state $1^2$ A'. The reaction probability of the title reaction for J = 0 has been calculated, and the QCT result is consistent with the previous quantum mechanical wave packet result. Quasiclassical trajectory calculations of the four polarization-dependent differential cross sections have been carried out in the center of mass (CM) frame. The P(${\theta}_r$), P(${\phi}_r$) and P(${\theta}_r$, ${\phi}_r$) distributions, the k-k'-j' correlation and the angular distribution of product rotational vectors are presented in the form of polar plots. Due to the well in $1^2$ A' PES, the reagent vibrational excitation has greater influence on the polarization of the product rotational angular momentum vectors j' than the collision energy.
( Shimin Guan ),( Shaofeng Rong ),( Mengze Wang ),( Baoguo Cai ),( Qianqian Li ),( Shuo Zhang ) 한국미생물·생명공학회 2019 Journal of microbiology and biotechnology Vol.29 No.7
Natural gamma-decalactone (GDL) produced by biotransformation is an essential food additive with a peach-like aroma. However, the difficulty of effectively controlling the concentration of the substrate ricinoleic acid (RA) in water limits the biotransformation productivity, which is a bottleneck for industrialization. In this study, expanded vermiculite (E-V) was utilized as a carrier of RA to increase its distribution in the medium. E-V and three commonly used organic compounds were compared with respect to their effects on the biotransformation process, and the mechanism was revealed. Scanning electron microscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis indicated that RA was physically adsorbed onto the surface of and inside E-V instead of undergoing a chemical reaction, which increased the opportunity for interactions between microorganisms and the substrate. The highest concentration of GDL obtained in the medium with E-V was 6.2 g/l, which was 50% higher than that in the reference sample. In addition, the presence of E-V had no negative effect on the viability of the microorganisms. This study provides a new method for producing natural GDL through biotransformation on an industrial scale.