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Different segregation effects for Sc and Ce in an Al/δ´ interface
Yao Jian-Gang,Jiang Yong,Yin Deng-Feng 한국물리학회 2021 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.78 No.8
The behaviors of Sc and Ce segregation at Al (100)/δ´(100), Al (110)/δ´(110), and Al (111)/δ´(111) interfaces were theoretically predicted to explore the differences in the segregation effects in Al–Li alloys. The results show that Sc exhibits an evident trend to segregation to the Al/δ´ interface whereas this effect for Ce seems to be weak. The variation of the segregation energy is associated with the different orientation of the corresponding interface. The preferable segregated site is on the Al matrix side where the solutes tend to substitute the Al atom at the Li site for the first layer of the corresponding interface.
Yao-zhong Ding,Jian-hua Zhou,Li-na Ma,Yan-ni Qi,Gang Wei,Jie Zhang,Yong-guang Zhang 대한수의학회 2014 Journal of Veterinary Science Vol.15 No.3
A reverse transcription loop-mediated isothermalamplification (RT-LAMP) assay was developed to rapidlydetect foot-and-mouth disease virus serotype C (FMDV C). By testing 10-fold serial dilutions of FMDV C samples,sensitivity of the FMDV C RT-LAMP was found to be 10times higher than that of conventional reverse transcription-PCR (RT-PCR). No cross-reactivity with A, Asia 1, or OFMDV or swine vesicular disease virus (SVDV) indicatedthat FMDV C RT-LAMP may be an exciting novel method for detecting FMDV C.
( Xin Gang Cui ),( Dan Feng Xu ),( Chao Lv ),( Fa Jun Qu ),( Jin He ),( Ming Chen ),( Yu Shan Liu ),( Yi Gao ),( Jian Ping Che ),( Ya Cheng Yao ),( Hong Yu Yu ) 생화학분자생물학회 2011 BMB Reports Vol.44 No.8
MED19 is a member of the Mediator that plays a key role in the activation and repression of signal transduction or the regulation of transcription in carcinomas. To tested the functional role of MED19 in human prostate cancer, we downregulated MED19 expression in prostate cancer cells (PC-3 and DU145) by lentivirus- mediated short hairpin (shRNA), and analyzed the effect of inhibition of MED19 on prostate cancer cell proliferation and tumorigenesis. The in vitro prostate cancer cell proliferation, colony formation, and in vivo tumor growth in nude mice xenografts was significantly reduced after the downregulation of MED19. Knock- down of MED19 caused S-phase arrest and induced apoptosis via modulation of Bid and Caspase 7. It was suggested that MED19 serves as a novel proliferation regulator that promotes growth of prostate cancer cells. [BMB reports 2011; 44(8): 547-552]
Good performance of Sc (0001) surface adsorbing CO molecule
Hao Zhi-Qiang,Yang Jian-Long,Li Hui,Yao Jian-Gang 한국물리학회 2022 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.80 No.9
There is a big discrepancy in terms of calculating the surface energy of the HCP Sc (0001) surface for previous theoretical results. Herein, we used a relatively reasonable method to predict the calculated value (1.263 J/m2), which agrees well with the experimental outcome (1.275 J/m2). Based on this, the adsorption behaviors of CO at different sites, i.e., hollow (H1, H2, and H3), bridge (B1), and top sites (T1), were explored theoretically. The results suggest that hollow sites, particularly the H1 site exhibits a good performance in adsorbing CO molecule, and that the adsorption energy reaches nearly 3.5 eV, which corresponds to a significant elongation of the C–O distance (more than 24%). In addition, the CO adsorbed at the H1 site is seen to be located parallelly at the surface. An obvious substantive variation of the CO molecular orbit of H1 adsorption site is observed.
Zhao Shuang,Song Gang,Chen Jian,Yao Man,Liu Liming 한국물리학회 2022 Current Applied Physics Vol.33 No.-
The interface between Mg alloy and the intermetallic compounds (IMCs) is the weak point during the welding of Mg alloy and steel. The models of AlNi surface under different number of absorbed magnesium atoms were established. The absorption energy and electronic properties of the Nth (N represents the number of Mg atoms, which may be 1, 2, 3, and 4 in this paper) Mg atom on the AlNi surface were calculated using first-principles calculations. The results show that the previously absorbed Mg atoms will promote the absorption of the latter Mg atom when the distance between them is equal or less than 2.89 Å. The absorption energy of the Mg atoms on the AlNi surface is related to the electronic exchange between different atoms. The results will provide a new perspective for understanding the atomic scale mechanism of the bonding between the Mg atom and AlNi IMCs.
Wu, Ting-Ting,Wang, Zhi-Gang,Ou, Wu-Ling,Wang, Jun,Yao, Guo-Qing,Yang, Bo,Rao, Zhi-Guo,Gao, Jian-Fei,Zhang, Bi-Cheng Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.24
Background: The study aimed to investigate the analgesic effect of a combination of intravenous flurbiprofen axetil and opioids, and evaluate the relationship between refractory pain relief and plasma ${\beta}$-endorphin levels in cancer patients. Materials and Methods: A total of 120 cancer patients was randomly divided into two groups, 60 patients took orally morphine sulfate sustained-release tablets in group A, and another 60 patients receiving the combination treatment of intravenous flurbiprofen axetil and opioid drugs in group B. After 7 days, pain relief, quality of life improvement and side effects were evaluated. Furthermore, plasma ${\beta}$-endorphin levels were measured by radioimmunoassay. Results: With the combination treatment of intravenous intravenous flurbiprofen axetil and opioids, the total effective rate of pain relief rose to 91.4%, as compared to 82.1% when morphine sulfate sustained-release tablet was used alone. Compared with that of group A, the analgesic effect increased in group B (p=0.031). Moreover, satisfactory pain relief was associated with a significant increase in plasma ${\beta}$-endorphin levels. After the treatment, plasma ${\beta}$-endorphin level in group B was $62.4{\pm}13.5pg/ml$, which was higher than that in group A ($45.8{\pm}11.2pg/ml$) (p<0.05). Conclusions: Our results suggest the combination of intravenous flurbiprofen axetil and opioids can enhance the analgesic effect of opioid drugs by increasing plasma ${\beta}$-endorphin levels, which would offer a selected and reliable strategy for refractory cancer pain treatment.
A novel pathogenic deletion in ISPD causes Walker-Warburg syndrome in a Chinese family
Shi Yuting,Fu Yimei,Tao Zhouteng,Yong Wenjing,Peng Huirong,Jian Wenyang,Chen Gang,Guo Manhui,Zhao Yanhua,Yao Ruojin,Guo Dewei 한국유전학회 2023 Genes & Genomics Vol.45 No.3
Background Walker-Warburg syndrome (WWS) is a genetically heterogeneous disease that often presents with complex brain and eye malformations and congenital muscular dystrophy. Mutations of the ISPD gene have been identified as one of the most frequent causes of WWS. Objective The current study aimed to identify the cause of severe congenital hydrocephalus and brain dysplasia in our subject. Methods Genomic DNA was extracted from the fetus's umbilical cord blood and peripheral venous blood of the parents. The genetic analysis included whole-exome sequencing and qPCR. Additionally, in silico analysis and cellular experiments were performed. Results We identified a novel homozygous deletion of exons 7 to 9 in the ISPD gene of the fetus with WWS. In silico analysis revealed a defective domain structure in the C-terminus domain of the ISPD. Analysis of the electrostatic potential energy showed the formation of a new binding pocket formation on the surface of the mutant ISPD gene (ISPD-del ex7-9). Cellular study of the mutant ISPD revealed a significant change in its cellular localization, with the ISPD-del ex7-9 protein translocating from the cytoplasm to the nucleus compared to wild-type ISPD, which is mostly present in the cytoplasm. Conclusion The present study expands the mutational spectrum of WWS caused by ISPD mutations. Importantly, our work suggests that whole-exome sequencing could be considered as a diagnostic option for fetuses with congenital hydrocephalus and brain malformations when karyotype or chromosomal microarray analysis fails to provide a definitive diagnosis.