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In this study, the performance of the MicroFoss system (Foss, Spain) for the enumeration of Escherichia coli in water samples was evaluated. One hundred and eighty-five samples were analysed both by MicroFoss assay and culture isolation on Tryptone-Bile X-glucuronide agar (TBX), and the correlation coefficient obtained was 0.92. The analysis of 28 new samples using both methods showed a statistically significant relationship at the 99.5% confidence level between log colony forming units obtained by MicroFoss assay and those obtained using growth on TBX agar. Nevertheless, when the level of sample contamination was low, the variability was high. In conclusion, the MicroFoss system is a rapid and simple alternative method for the enumeration of E. coli in water although discordance between the results using these methods in samples with low counts could limit its use for the study of clean water such as potable water. 相似文献
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Hammer S Toenjes M Lange M Fischer JJ Dunkel I Mebus S Grimm CH Hetzer R Berger F Sperling S 《Journal of cellular biochemistry》2008,104(3):1022-1033
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Comparative analysis of serum proteome in congenital scoliosis patients with TBX6 haploinsufficiency – a first report pointing to lipid metabolism
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Gang Liu Yangzhong Zhou Sen Liu Jun Chen Jiaqi Liu Yuzhi Zuo Zhenlei Liu Weisheng Chen Yixin Chen Jia Chen Mao Lin Yanxue Zhao Yang Yang Shensgru Wang Xu Yang Yufen Ma Jian Wang Xiaoli Chen Jianguo Zhang Jianxiong Shen Zhihong Wu Guixing Qiu 《Journal of cellular and molecular medicine》2018,22(1):533-545
Congenital scoliosis (CS) is a three‐dimensional deformity of the spine affecting quality of life. We have demonstrated TBX6 haploinsufficiency is the most important contributor to CS. However, the pathophysiology at the protein level remains unclear. Therefore, this study was to explore the differential proteome in serum of CS patients with TBX6 haploinsufficiency. Sera from nine CS patients with TBX6 haploinsufficiency and nine age‐ and gender‐matched healthy controls were collected and analysed by isobaric tagged relative and absolute quantification (iTRAQ) labelling coupled with mass spectrometry (MS). In total, 277 proteins were detected and 20 proteins were designated as differentially expressed proteins, which were submitted to subsequent bioinformatics analysis. Gene Ontology classification analysis showed the biological process was primarily related to ‘cellular process’, molecular function ‘structural molecule activity’ and cellular component ‘extracellular region’. IPA analysis revealed ‘LXR/RXR activation’ was the top pathway, which is a crucial pathway in lipid metabolism. Hierarchical clustering analysis generated two clusters. In summary, this study is the first proteomic research to delineate the total and differential serum proteins in TBX6 haploinsufficiency‐caused CS. The proteins discovered in this experiment may serve as potential biomarkers for CS, and lipid metabolism might play important roles in the pathogenesis of CS. 相似文献
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J. Evans H.I. Knight A.W. Smith M.C. Pearce M. Hall G. Foster J.C. Low G.J. Gunn 《Letters in applied microbiology》2008,47(3):148-152
Aims: To compare rhamnose MacConkey agar supplemented with cefixime and tellurite (CT-RMac) and tryptone bile X-glucuronide (TBX) agars as isolation media for Vero cytotoxin-producing Escherichia coli (VTEC) serogroup O26 from animal faeces.
Methods and Results: Nine VTEC O26 were isolated from sheep faeces; out of which six were isolated only on CT-RMac and one was isolated only on TBX. One hundred and twelve VTEC O26 were isolated from calf faeces; out of which 97% were from CT-RMac and 52% were from TBX. In a study of E. coli O26 strains, 84% of VT-positive O26 did not ferment rhamnose when compared with 16% of VT-negative O26. VT-positive (19%) and VT-negative (39%) E. coli O26 strains did not grow on CT-RMac agar.
Conclusions: It is important to consider that VTEC O26 strains either may ferment rhamnose or may be sensitive to the CT supplement of CT-RMac agar.
Significance and Impact of the Study: This work compares CT-RMac and TBX agars as isolation medium for VTEC O26 from Scottish animal faeces and highlights that VTEC O26 may be missed if only CT-RMac agar is used. 相似文献
Methods and Results: Nine VTEC O26 were isolated from sheep faeces; out of which six were isolated only on CT-RMac and one was isolated only on TBX. One hundred and twelve VTEC O26 were isolated from calf faeces; out of which 97% were from CT-RMac and 52% were from TBX. In a study of E. coli O26 strains, 84% of VT-positive O26 did not ferment rhamnose when compared with 16% of VT-negative O26. VT-positive (19%) and VT-negative (39%) E. coli O26 strains did not grow on CT-RMac agar.
Conclusions: It is important to consider that VTEC O26 strains either may ferment rhamnose or may be sensitive to the CT supplement of CT-RMac agar.
Significance and Impact of the Study: This work compares CT-RMac and TBX agars as isolation medium for VTEC O26 from Scottish animal faeces and highlights that VTEC O26 may be missed if only CT-RMac agar is used. 相似文献
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The British Society for Developmental Biology (BSDB) autumn meeting on ‘T-box Genes in Development and Disease’ was held in Nottingham, UK, from 16 to 18 September 2002. 相似文献