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- 저자 : Xiaohu Su (검색결과 3 건)
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Xiaohu Su,Shenyuan Wang,Guangqi Gao,Xinyu Zho,Lidong Han,Guanghua Su,Jiaqi Zhang,Wanfu Bai,Xiuying Wang,Guangpeng Li,Li Zhang 한국유전학회 2020 Genes & Genomics Vol.42 No.3
Background The development efficiency of cloned cattle is extremely low (< 5%), most of them were aborted at late gestation. Based on our previous studies, some recipient cows with a cloned fetus would present as engorged uterine vessels and enlarged umbilical vessels randomly. Abortion involves both maternal and fetal factors. Objective Our aim was to explore this phenomenon by microRNAs expression profile analysis of maternal corpus luteum (CL), which was related to pregnancy maintenance. Methods The present study provided the comparison of maternal CL miRNAs expression of abnormally and normally developed cloned bovine fetus at late gestation (~ 210 days) using RNA-Seq technology. Results We selected two abnormally pregnant cows (abnormal group, AG) and three normally pregnant cows (normal group, NG) and acquired valid reads of 9317,261–12,327,185 (~ 84.53–91.28%) from five libraries. In total, we identified 981 conserved miRNAs and 223 novel miRNAs. 1052 miRNAs were co-expressed, 124 miRNAs were uniquely expressed in AG, and 93 miRNAs were uniquely expressed in the NG. Compared with NG, 11 were significantly overexpressed, and 22 were downregulated (p < 0.05) at AG among 1052 co-expressed miRNAs. The differentially expressed miRNAs-targeted genes were further analyzed by Gene Ontology and KEGG pathway analysis. Notably, the steroid biosynthesis pathway was a significantly enriched term (p < 0.01), which may affect the secretion of progesterone. Conclusion Our research suggested that abnormal miRNAs expression of bovine maternal CL may affect the pregnant status at late gestation.
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Xiaohu Su,Bingwu Wang,Zhaoyun Zhou,Zixian Li,Song Tong,Simin Chen,Nan Zhang,Su Liu,Maoyin Zhang 대한통증학회 2023 The Korean Journal of Pain Vol.36 No.1
Background: The purpose of this research was to assess the role of heparanase (HPSE)/syndecan1 (SDC1)/nerve growth factor (NGF) on cancer pain from melanoma. Methods: The influence of HPSE on the biological function of melanoma cells and cancer pain in a mouse model was evaluated. Immunohistochemical staining was used to analyze HPSE and SDC1. HPSE, NGF, and SDC1 were detected using western blot. Inflammatory factors were detected using ELISA assay. Results: HPSE promoted melanoma cell viability, proliferation, migration, invasion, and tumor growth, as well as cancer pain, while SST0001 treatment reversed the promoting effect of HPSE. HPSE up-regulated NGF, and NGF feedback promoted HPSE. High expression of NGF reversed the inhibitory effect of HPSE down-regulation on melanoma cell phenotype deterioration, including cell viability, proliferation, migration, and invasion. SST0001 down-regulated SDC1 expression. SDC1 reversed the inhibitory effect of SST0001 on cancer pain. Conclusions: The results showed that HPSE promoted melanoma development and cancer pain by interacting with NGF/SDC1. It provides new insights to better understand the role of HPSE in melanoma and also provides a new direction for cancer pain treatment.
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Shaoke Wan,Xiaohu Li,Wenjun Su,Jun Hong 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.23 No.12
Chatter vibration has been a critical phenomenon in milling, and results in poor surface finishes, severe tool wear and shrill noise, which are usually overcome with quite conservative cutting parameters and hence the machining efficiency is significantly affected. In order to suppress the chatter vibration and improve the machining efficiency of milling process, a milling chatter mitigation method is presented with projection-based robust adaptive controller and an active magnetic bearing (AMB) installed in the milling spindle. The AMB is utilized to apply the active force to stabilize the milling process when the originally selected cutting conditions are unstable, with which the chatter-free boundary can be enlarged. Considering the possible parameters’ uncertainties of milling system which result from the nonlinear dynamic behaviors of the spindle system and the possible saturation of actuator caused by the noise, a projection-based robust adaptive controller is designed. Simulations of active chatter mitigation with different degrees of milling system’s uncertainties are performed, and the results show that the boundary of stability lobes diagram (SLD) of milling chatter is significantly enlarged. In addition, the milling experiments are also performed with the AMB installed in a milling spindle, and the results show that the chatter vibration is exactly mitigated with the presented method in this paper.
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