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11-Methoxyviburtinal, A New Iridoid from Valeriana jatamansi
Chen Ye-Gao,Yu Li-Li,Huang Rong,Lv Yu-Ping,Gui Shi-Hong The Pharmaceutical Society of Korea 2005 Archives of Pharmacal Research Vol.28 No.10
Five compounds of iridoids, lignan and phenylpropanoid glycosides were isolated from the roots of Valeriana jatamansi by column chromatography. Their structures were elucidated as 11-methoxyviburtinal (1), baldrinal (2), prinsepiol-4-O-${\beta}$-D-glucoside (3), coniferin (4), and hexacosanic acid (5) by spectroscopic analysis. 11-Methoxyviburtinal was a new compound, and others were isolated from the plant for the first time.
3,7-Dihydroxy-2,4,6-trimethoxyphenanthrene, A New Phenanthrene from Bulbophyllum Odoratissimum
Chen, Ye-Gao,Xu, Jun-Ju,Yu, Hong,Qing, Chen,Zhang, Yan-Li,Liu, Ying,Wang, Ji-Hua Korean Chemical Society 2007 대한화학회지 Vol.51 No.4
Efficient stereoselective synthesis of α,β-Unsaturated acids, α-Cyanoacrylonitriles and α-Cyanoacrylates has been carried out in the presence of NaHSO4·SiO2 under solvent?free conditions with an E-geometry. A new phenanthrene derivative 3,7-dihydroxy-2,4,6-trimethoxyphenanthrene was isolated from the all plant of Bulbophyllum odoratissimum, and its structure was elucidated by extensive spectral studies and chemical transformation. The compound displayed cytotoxicity against the growth of human leukemia cell lines K562 and HL-60, human lung adenocarcinoma A549, human hepatoma BEL-7402 and human stomach cancer cell lines SGC-7901 with IC50 values of 14.23, 10.02, 3.42, 15.36 and 1.13 mg/ml respectively.
3’’-Hydroxyamentoflavone and Its 7-O-Methyl Ether, Two New Biflavonoids fromAristolochia contorta
Ye-Gao Chen,Li-Li Yu,Rong Huang,Jia-Chuan Liu,Yu-Ping Lv,Yong Zhao 대한약학회 2005 Archives of Pharmacal Research Vol.28 No.11
Two new biflavonoids, 3’’-hydroxyamentoflavone-7-O-methyl ether (1) and 3’’-hydroxyamentoflavone (2), were isolated from the fruits of Aristolochia contorta Bge. Their structures were elucidated by HR-ESI-MS, 1D-, and 2D-NMR spectroscopy.
11-Methoxyviburtinal, A New Iridoid from Valeriana jatamansi
Ye-Gao Chen,Li-Li Yu,Rong Huang,Yu-Ping Lv,Shi-Hong Gui 대한약학회 2005 Archives of Pharmacal Research Vol.28 No.10
Five compounds of iridoids, lignan and phenylpropanoid glycosides were isolated from the roots of Valeriana jatamansi by column chromatography. Their structures were elucidated as 11-methoxyviburtinal (1), baldrinal (2), prinsepiol-4-O-β-D-glucoside (3), coniferin (4), and hexacosanic acid (5) by spectroscopic analysis. 11- Methoxyviburtinal was a new compound, and others were isolated from the plant for the first time.
3'-Hydroxyamentoflavone and Its 7-O-Methyl Ether, Two New Biflavonoids from Aristolochia contorta
Chen Ye-Gao,Yu Li-Li,Huang Rang,Liu Jia-Chuan,Lv Yu-Ping,Zhao Yang The Pharmaceutical Society of Korea 2005 Archives of Pharmacal Research Vol.28 No.11
Two new biflavonoids, 3'-hydroxyamentoflavone-7-O-methyl ether (1) and 3'-hydroxyamentoflavone (2), were isolated from the fruits of Aristolochia contorta Bge. Their structures were elucidated by HR-ESI-MS, 1D-, and 2D-NMR spectroscopy.
Triterpenoids from Schisandra henryi with Cytotoxic Effect on Leukemia and Hela Cells In Vitro
Chen, Ye-Gao,Wu, Zheng-Cai,Lv, Yu-Ping,Gui, Shi-Hong,Wen, Jin,Liao, Xin-Rong,Yuan, Li-Ming,Halaweish, Fathi The Pharmaceutical Society of Korea 2003 Archives of Pharmacal Research Vol.26 No.11
Four known lanostane triterpenoids, schiprolactone A (1), schisanlactone B (2), nigranoic acid (3) and schisandronic acid (4) Were isolated from the stems of Schisandra henryi for the first time. Their structures were characterized by IR, MS and NMR techniques. Compounds 1, 2 and 4 showed moderate cytotoxic activity against Leukemia cells in vitro. Cytotoxic activity of compounds 1-4 showed $IC_{50}$ of 0.0097, 0.01, 0.097 and 0.0099 $\mu$ mol/mL respectively toward Leukemia cells and $IC_{50}$ of 0.097, 0.1, 0.097 and 0.099 $\mu$mol/mL toward Hela cells respectively. It is the first report that these compounds possess cytotoxic activity on Leukemia and Hela cells.
Prevalence and Subtypes of Blastocystis in Alpacas, Vicugna pacos in Shanxi Province, China
Ye-Ting Ma,Qing Liu,Shi-Chen Xie,Xiao-Dong Li,Yuan-Yuan Ma,Tao-Shan Li,Wen-Wei Gao,Xing-Quan Zhu 대한기생충학ㆍ열대의학회 2020 The Korean Journal of Parasitology Vol.58 No.2
Blastocystis, an enteric protist, has been reported to be an important cause of protozoal gastrointestinal manifestations in humans and animals worldwide. Animals harboring certain Blastocystis subtypes (STs) may serve as a potential source of human infection. However, information about the prevalence and genetic diversity of Blastocystis in alpacas is limited. In the present study, a total of 366 fecal samples from alpacas in Shanxi Province, northern China, were examined for Blastocystis by PCR amplification of the small subunit rRNA gene, followed by sequencing and phylogenetic analysis. The prevalence of Blastocystis in alpacas was 23.8%, and gender difference in the prevalence of Blastocystis was observed. The most predominant Blastocystis ST was ST10, followed by ST14 and ST5. The detection of ST5, a potentially zoonotic genotype, indicates that alpacas harboring ST5 could be a potential source of human infection with Blastocystis. These data provide new insight into the prevalence and genetic diversity of Blastocystis in alpacas.
Status and Determinants of Health Literacy among Adolescents in Guangdong, China
Ye, Xiao-Hua,Yang, Yi,Gao, Yan-Hui,Chen, Si-Dong,Xu, Ya Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.20
Background: Previous studies for non-communicable disease cotrol, including cancer, have mostly relied on health literacy in adults. However, limited studies are available for adolescents. This study aimed to assess the status and determinants of health literacy in in-school adolescents in Guangdong, China. Materials and Methods: A total of 3,821 students aged 13-25 years were selected by multi-stage cluster sampling. After the questionnaire of health literacy was answered, the total scores for health knowledge (18 questions), skills (5 questions) and behaviors (14 questions) were determined. The total scores for health literacy and each subscale were recoded into adequate and inadequate subgroups, and logistic regression models were used to identify factors associated with each outcome variable. Results: The prevalence of adequate health literacy was 14.4%, and the prevalences for adequate knowledge, skills and behavior were 22.4%, 64.7% and 6.6%, respectively. Students coming from prestigious schools and having parents with higher education had higher odds of having adequate knowledge, skills and behaviors. Female students had higher odds of having adequate knowledge and behaviors. Students in grade 7-8 had higher odds of having adequate knowledge and skills. The health knowledge was positive associated with health skills (odds ratio [OR] =2.1, 95% confidence interval [CI] 1.7-2.5) and behaviors (OR=3.0, 95%CI 2.3-4.0), and health skills were positive associated with health behaviors (OR=2.6, 95%CI 1.8-3.8). Conclusions: Further efforts should be made to increase adolescents' health knowledge and behaviors, especially for low grade and male students in non-prestigious schools.
Systematic discovery of uncharacterized transcription factors in <i>Escherichia coli</i> K-12 MG1655
Gao, Ye,Yurkovich, James T,Seo, Sang Woo,Kabimoldayev, Ilyas,Drä,ger, Andreas,Chen, Ke,Sastry, Anand V,Fang, Xin,Mih, Nathan,Yang, Laurence,Eichner, Johannes,Cho, Byung-Kwan,Kim, Donghyuk,Palsson, Oxford University Press 2018 Nucleic acids research Vol.46 No.20
<P><B>Abstract</B></P><P>Transcriptional regulation enables cells to respond to environmental changes. Of the estimated 304 candidate transcription factors (TFs) in <I>Escherichia coli</I> K-12 MG1655, 185 have been experimentally identified, but ChIP methods have been used to fully characterize only a few dozen. Identifying these remaining TFs is key to improving our knowledge of the <I>E. coli</I> transcriptional regulatory network (TRN). Here, we developed an integrated workflow for the computational prediction and comprehensive experimental validation of TFs using a suite of genome-wide experiments. We applied this workflow to (i) identify 16 candidate TFs from over a hundred uncharacterized genes; (ii) capture a total of 255 DNA binding peaks for ten candidate TFs resulting in six high-confidence binding motifs; (iii) reconstruct the regulons of these ten TFs by determining gene expression changes upon deletion of each TF and (iv) identify the regulatory roles of three TFs (YiaJ, YdcI, and YeiE) as regulators of <SMALL>L</SMALL>-ascorbate utilization, proton transfer and acetate metabolism, and iron homeostasis under iron-limited conditions, respectively. Together, these results demonstrate how this workflow can be used to discover, characterize, and elucidate regulatory functions of uncharacterized TFs in parallel.</P>
Coptis chinensis Polysaccharides Inhibit Advanced Glycation End Product Formation
Ye Yang,Yun Li,Dengke Yin,Song Chen,Xiangdong Gao 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.6
Coptis chinensis Franch (Huanglian) is commonly used to treat diabetes in China. In this study, the effects of the C. chinensis Franch polysaccharides (CCP) on advanced glycation end product (AGE) formation in vitro and in streptozotocin-induced diabetic mice were investigated. CCP significantly inhibited all the three periods of nonenzymatic protein glycation in vitro, including Amadori product, dicarbonyl compound, and AGE formation (P < .01). In diabetic mice, the administration of CCP not only improved both bodyweight and serum insulin and decreased fasting blood glucose and glycated serum protein concentrations but also decreased the AGE accumulations and morphological abnormalities in pancreas and liver. The inhibitory effects of CCP on AGE formation afford a potential therapeutic use in the prevention and treatment of diabetes.