Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

Clostridium beijerinckii fermentation time course

ABSTRACT: This SuperSeries is composed of the following subset Series: GSE12358: Clostridium beijerinckii NCIMB 8052 wild-type fermentation time course GSE12359: Clostridium beijerinckii BA101 mutant fermentation time course Refer to individual Series

ORGANISM(S): Clostridium beijerinckii

SUBMITTER: Zhen Shi

PROVIDER: E-GEOD-12365 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Acute adrenal insufficiency may affect outcome in the trauma patient.

Guillamondegui Oscar D OD Gunter Oliver L OL Patel Shivani S Fleming Sloan S Cotton Bryan A BA Morris John A JA

The American surgeon 20090401 4

Acute adrenal insufficiency in the trauma patient is underrecognized and the impact poorly understood. Our hypothesis was that the identification and treatment of acute adrenal insufficiency reduces mortality in trauma patients. Institutional Review Board approval for the retrospective review of a prospective database from a Level 1 trauma center for 2002 to 2004 was obtained. The study population included patients receiving a cosyntropin stimulation test (250 microg) and/or random cortisol leve ...[more]

PMID: 19385286

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Project description:Furfural is the prevalent microbial inhibitor generated during pretreatment and hydrolysis of lignocellulosic biomass to monomeric sugars, but the molecular response of Clostridium beijerinckii NCIMB 8052 to this compound is unknown. To discern the effect of furfural on C. beijerinckii and to gain insights into the molecular mechanisms of action and detoxification, we studied the physiological changes of furfural-stressed cultures during acetone-butanol-ethanol (ABE) fermentation, and profiled differentially expressed genes by genome-wide transcriptional analysis. C. beijerinckii exposed to furfural stress during the acidogenic growth phase produced 13% more ABE than the unstressed control. The growth and ABE by C. beijerinckii ceased following exposure to furfural stress during the solventogenic growth phase. By comparing gene expression of furfural-stressed cultures to that of the unstressed control, at both the acidogenic and solventogenic phases, we ascertained that furfural induces expression of several genes including those that code for heat shock proteins, redox enzymes and cofactor associated proteins, and ATP-binding cassette transporters, and represses genes belonging to the phosphotransferase system, two-component system, chemotaxis and cell motility. Based on these results, we discuss the underpinning for furfural-mediated change in ABE fermentation by the solventogenic Clostridium species. C. beijerinckii 8052 pre-culture was incubated anaerobically to attain acidogenic or solventogenic growth phase. The culture was then subdivided into two bottles. One bottle was challenged with furfural and the other bottle was left unchallenged. After 3 h growth, C. beijerinckii 8052 samples were collected, during which the original concentration of furfural in the growth medium was reduced to more than half. Total RNA was isolated, purified, converted to enriched mRNA, and dye-coupled (Alexa Fluor 555) complementary cRNA. This was followed by hybridization and microarray data analysis.

Dataset Information

Clostridium beijerinckii fermentation time course

Publications

Acute adrenal insufficiency may affect outcome in the trauma patient.

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