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( Feng Yun Gong ),( Ding Yu Zhang ),( Jiang Guo Zhang ),( Li Li Wang ),( Wei Li Zhan ),( Jun Ying Qi ),( Jian Xin Song ) 생화학분자생물학회(구 한국생화학분자생물학회) 2014 BMB Reports Vol.47 No.4
To gain insights into the effect of MexB gene under the short interfering RNA (siRNA), we synthesized 21 bp siRNA duplexes against the MexB gene. RT-PCR was performed to determine whether the siRNA inhibited the expression of MexB mRNA. Changes in antibiotic susceptibility in response to siRNA were measured by the E-test method. The efficacy of siRNAs was determined in a murine model of chronic P. aeruginosa lung infection. MexB-siRNAs inhibited both mRNA expression and the activity of P. aeruginosa in vitro. In vivo, siRNA was effective in reducing the bacterial load in the model of chronic lung infection and the P. aeruginosa-induced pathological changes. MexB-siRNA treatment enhanced the production of inflammatory cytokines in the early infection stage (P < 0.05). Our results suggest that targeting of MexB with siRNA appears to be a novel strategy for treating P. aeruginosa infections. [BMB Reports 2014; 47(4): 203-208]
Kai-Yun Fu,Qing-Wei Meng,Feng-Gong Lüa,Wen-Chao Guo,Tursun Ahmat,Guo-Qing Li 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.2
The basic helix–loop–helix (bHLH) transcription factors possess crucial functions in cell proliferation, determination, differentiation, cell cycle maintenance and homeostasis or stress response pathways. Since a few juvenile hormone analogues such as hydroprene, methoprene and pyriproxyfen targeting a bHLH member Met are already registered for pest management, there is a potential to develop more insecticides targeting various bHLHs. The identification of bHLH members is the first step. Based on the transcriptome and the genome of the Colorado potato beetle Leptinotarsa decemlineata, the most important pest in potato, 49 bHLH members were identified. All LdbHLH memberswere defined by their names and families according to various phylogenetic analyses with bHLH homologues of Drosophila melanogaster, Apis mellifera, Bombyx mori and Tribolium castaneum. Among these LdbHLHs, 17, 10, 10, 1, 10 and 1 members belonged to A, B, C, D, E and F high-order groups, respectively. The results would provide useful background information for future studies on functions of bHLH proteins in the regulation of L. decemlineata development. Moreover, the bHLHs could serve as potential insecticide targets. These proteins could be used in small molecule screen, or in the development of RNAi-based pest management methods.
STUDY OF INTELLIGENT ENGINEERING DRAWING PROCESSING SYSTEM
Guoan, Gao,Kai, Gong Mao,Wei, Zhang,Feng, Shen Yun 대한전자공학회 1992 HICEC:Harbin International Conference on Electroni Vol.1 No.1
An intelligent Mechanical Drawing Recognition System (MDRS) is described in this paper. MDRS consists of two subsystems: the General Drawing Scanning Input System (GDSIS) and the Part Drawing Understanding System (PDUS), which are independent each other but integrated together. Some new algorithems and conceptions are presented.
Ming-Chen Ba,Hui Long,Xiang-Liang Zhang,Yuan-Feng Gong,Zhao-Fei Yan,Shuai Wang,Yun-Qiang Tang,Shu-Zhong Cui 연세대학교의과대학 2017 Yonsei medical journal Vol.58 No.3
Purpose: CO2 leakage along the trocar (chimney effect) has been proposed to be an important factor underlying port-site metastasisafter laparoscopic surgery. This study aimed to test this hypothesis by comparing the incidence of port-site metastasis betweenB-ultrasound-guided and laparoscopically-assisted hyperthermic intraperitoneal perfusion chemotherapy (HIPPC). Materials and Methods: Sixty-two patients with malignant ascites induced by gastrointestinal or ovarian cancer were divided into two groups to receive either B-ultrasound-guided or laparoscopically-assisted HIPPC. Clinical efficacy was assessed from the objective remission rate (ORR), the Karnofsky Performance Status (KPS) score, and overall survival. The incidence of port-site metastasis was compared between the two groups. Results: Patients in the B-ultrasound (n=32) and laparoscopy (n=30) groups were comparable in terms of age, sex, primary diseasetype, volume of ascites, and free cancer cell (FCC)-positive ascites. After HIPPC, there were no significant differences between the B-ultrasound and laparoscopy groups in the KPS score change, ORR, and median survival time. The incidence of port-site metastasis after HIPPC was not significantly different between the B-ultrasound (3 of 32, 9.36%) and laparoscopy (3 of 30, 10%) groups, but significantly different among pancreatic, gastric, ovarian, and colorectal cancer (33.33, 15.79, 10.00, and 0.00%, p<0.001). Conclusion: The chimney effect may not be the key reason for port-site metastasis after laparoscopy. Other factors may play a role, including the local microenvironment at the trocar site and the delivery of viable FCCs (from the tumor or malignant ascites) to the trauma site during laparoscopic surgery.