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Okoniewska B, Santana MJ, Holroyd-Leduc J, Flemons W, O'Beirne M, White D, Ocampo W, Ghali WA, Forster AJ. Erratum to: A framework to assess patient-reported adverse outcomes arising during hospitalization. BMC Health Serv Res 2017; 17:563. [PMID: 28814298 PMCID: PMC5558767 DOI: 10.1186/s12913-017-2392-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 06/16/2017] [Indexed: 01/04/2024] Open
Affiliation(s)
- B Okoniewska
- W21C Research and Innovation Centre, G-01- TRW Building, 3280 Hospital Drive, NW, Calgary, AB, T2N 4Z6, Canada
| | - M J Santana
- Department of Community Health Sciences, O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, 3rd Floor, 3-36E, TRW Building, 3280 Hospital Drive, NW, Calgary, AB, T2N 4Z6, Canada.
| | - J Holroyd-Leduc
- Department of Medicine, Cumming School of Medicine, University of Calgary, 1403 29 St NW, Calgary, AB, T2N 2 T9, Canada
| | - W Flemons
- Department of Medicine, Cumming School of Medicine, University of Calgary, 1403 29 St NW, Calgary, AB, T2N 2 T9, Canada
| | - M O'Beirne
- Family Medicine and Primary Care Research Office, University of Calgary, G012, Health Sciences Centre, 3330 Hospital Drive NW, Calgary, Alberta, T2N 4 N1, Canada
| | - D White
- Faculty of Nursing, University of Calgary, 2500 University Drive NW, Calgary, AB, T2N 1 N4, Canada
| | - W Ocampo
- W21C Research and Innovation Centre, G-01- TRW Building, 3280 Hospital Drive, NW, Calgary, AB, T2N 4Z6, Canada
| | - W A Ghali
- Department of Community Health Sciences, O'Brien Institute for Public Health, Cumming School of Medicine, University of Calgary, 3rd Floor, 3-36E, TRW Building, 3280 Hospital Drive, NW, Calgary, AB, T2N 4Z6, Canada
| | - A J Forster
- Department of Medicine, University of Ottawa, Civic Campus 1053 Carling Avenue, Box 684, Ottawa, ON, K1Y 4E9, Canada
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Morales DK, Ocampo W, Zambrano MM. Efficient removal of hexavalent chromium by a tolerant Streptomyces sp. affected by the toxic effect of metal exposure. J Appl Microbiol 2008; 103:2704-12. [PMID: 18045449 DOI: 10.1111/j.1365-2672.2007.03510.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
AIMS To isolate and analyse chromium-resistant micro-organisms suitable for bioremediation. METHODS AND RESULTS Strain CG252, with a minimal inhibitory concentration of 500 microg ml(-1), was isolated from contaminated soils and identified as a Streptomyces sp. by 16S rDNA sequence analysis. Assays carried out at various Cr(VI) concentrations indicated that chromium removal was more efficient at lower concentrations and that this activity resulted in accumulation of Cr(III). Atomic adsorption analysis indicated that the chromium removed was not associated with cell mass and activity assays showed that the capacity to reduce Cr(VI) was most probably due to a soluble cytosolic enzyme. Cells grown as biofilms showed enhanced removal of Cr(VI) with respect to planktonic cells, while analysis of growth and colony morphology indicated that Cr(VI) had a toxic effect on this strain. CONCLUSIONS Streptomyces sp. CG252 tolerated heavy metals and elevated levels of chromium, despite its negative effect on growth and development, and was efficient at removing Cr(VI) by promoting reduction to Cr(III). SIGNIFICANCE AND IMPACT OF THE STUDY Strain CG252's capacity to tolerate heavy metals and to reduce Cr(VI) to the less toxic Cr(III), especially when forming biofilms, makes it a promising candidate for detoxification of sites containing this heavy metal.
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