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Barlow Brooke,Thompson Bastin Melissa L.,Shadler Aric,Cook Aaron M. 대한신경집중치료학회 2022 대한신경집중치료학회지 Vol.15 No.2
Background: Chloride-rich fluid administration is frequently employed in the management of aneurysmal subarachnoid hemorrhage (aSAH). However, the incidence and consequences of hyperchloremia in aSAH remain poorly defined. This study aimed to describe the incidence of hyperchloremia in aSAH, the contribution of fluid sources to chloride exposure, and the potential associations of hyperchloremia with patient outcomes.Methods: This was a single-center retrospective cohort study of patients admitted to a neurointensive care unit with aSAH. The primary outcome was incidence of hyperchloremia (chloride >109 mEq/L). Secondary outcomes included incidence of severe hyperchloremia (chloride >115 mEq/L), incidence of acute kidney injury (AKI), need for renal replacement therapy (RRT), intensive care unit (ICU) length of stay (LOS), hospital LOS, and in-hospital mortality.Results: Of the 234 patients included in the analysis, hyperchloremia occurred in 75% (n=175), and 58% (n=101) developed severe hyperchloremia. Median time to onset was 3 days (interquartile range, 1–5) after admission. Hyperchloremia was associated with prolonged ICU LOS (12 vs. 8 days, P<0.001), duration of mechanical ventilation (16 vs. 10 days, P<0.001), hospital LOS (15 vs. 9 days, P<0.001), and in-hospital mortality (14.3% vs. 0%, P=0.002) compared to no hyperchloremia. No significant difference was observed in the incidence of AKI or the need for RRT. Maintenance intravenous fluids accounted for the highest proportion of the cumulative chloride burden.Conclusion: Hyperchloremia occurs at a high frequency in aSAH and is associated with poor patient outcomes. Maintenance intravenous fluids accounted for the highest proportion of cumulative chloride burden.
Cheng, Jiansong,Liu, Bin,Bastin David A.,Han, Weiqing,Wang, Lei,Feng Lu The Microbiological Society of Korea 2007 The journal of microbiology Vol.45 No.1
Escherichia coli is a clonal species, and occurs as both commensal and pathogenic strains, which are normally classified on the basis of their O, H, and K antigens. The O-antigen (O-specific polysaccharide), which consists of a series of oligosaccharide (O-unit) repeats, contributes major antigenic variability to the cell surface. The O-antigen gene cluster of E. coli O66 was sequenced in this study. The genes putatively responsible for the biosynthesis of dTDP-6-deoxy-L-talose and GDP-mannose, as well as those responsible for the transfer of sugars and for O-unit processing were identified based on their homology. The function of the wzy gene was confirmed by the results of a mutation test. Genes specific for E. coli O66 were identified via PCR screening against representatives of 186 E. coli and Shigella O type strains. The comparison of intergenic sequences located between galF and the O-antigen gene cluster in a range of E. coli and Shigella showed that this region may perform an important function in the homologous recombination of the O-antigen gene clusters.
Jiansong Cheng,Bin Liu,David A. Bastin,Weiqing Han,Lei Wang,Lu Feng 한국미생물학회 2007 The journal of microbiology Vol.45 No.1
Escherichia coli is a clonal species, and occurs as both commensal and pathogenic strains, which are normally classified on the basis of their O, H, and K antigens. The O-antigen (O-specific polysaccharide), which consists of a series of oligosaccharide (O-unit) repeats, contributes major antigenic variability to the cell surface. The O-antigen gene cluster of E. coli O66 was sequenced in this study. The genes putatively responsible for the biosynthesis of dTDP-6-deoxy-L-talose and GDP-mannose, as well as those responsible for the transfer of sugars and for O-unit processing were identified based on their homology. The function of the wzy gene was confirmed by the results of a mutation test. Genes specific for E. coli O66 were identified via PCR screening against representatives of 186 E. coli and Shigella O type strains. The comparison of intergenic sequences located between galF and the O-antigen gene cluster in a range of E. coli and Shigella showed that this region may perform an important function in the homologous recombination of the O-antigen gene clusters.
적색 또는 백색 뽕나무 열매에서 High-Throughput Sequencing을 이용한 Anthocyanin과 Betulinic Acid 생합성의 분자적 특성 이해
Shicheng Zhao,Chang Ha Park,Thanislas Bastin, Baskar,Jin Jeon,Sang Un Park 한국약용작물학회 2016 한국약용작물학술대회 발표집 Vol.2016 No.10
Background : Mulberry (Morus alba L.), renowned for their medicine benefits and the leave as the sole food for silkworm (Bombyx mori). To understanding the molecular mechanism of color formation and nutritive value in different mulberry fruit varieties, we use high-throughput transcriptome sequencing technique to investigated the anthocyanin and betulinic biosynthesis pathway related functional genes. In addition, the total antosyanin and betuinic acid contend were also measured. Methods and Results : The resulting cDNA library was then sequenced using an Illumina HiSeq™ 2000 system. The clean reads were assembled using Trinity software, Then perform gene family clustering to get final unigenes. The pH differential method was used to determine the total anthocyanin content (TAC) of methanol extract from the red and white mulberry, and High-performance liquid chromatography (HPLC) analysis was used to quantify the triterpenes content. In this study, total 50,149 unigenes with an average length of 1,125 nt and N50 equaling 1,861 nt were generated. Using these transcriptome sequecing, cDNAs encoding anthocyanin biosynthetic genes and triterpene biosynthetic genes were isolated. In addition, total anthocyanins and betulinic acid content were analyzed. A great amount of total anthocyanins (59.16 mg/g) were found in fully ripe fruit of Cheongil. Accumulation of betulin and betulinic acid were also detected in all stages of Cheongil and Turkey fruits with small amount. Conclusion : The results of transcriptome sequencing provide useful information at molecular lever in mulberry research, such as interesting gene discovering, marker assisted molecular breeding, and interesting metabolic pathway investigate. The gene expression results could help us understanding of the molecular mechanisms of different fruit color determining factor.