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Photocatalytic inactivation of Cryptosporidium parvum on nanostructured titanium dioxide films.
J Water Health. 2010 Mar; 8(1):83-91.JW

Abstract

Control of waterborne gastrointestinal parasites represents a major concern to water industries worldwide. In developed countries, pathogens in drinking water supplies are normally removed by sand filtration followed by chemical disinfection. Cryptosporidium spp. are generally resistant to common disinfection techniques and alternative control strategies are being sought. In the current study, the photocatalytic inactivation of C. parvum oocysts was shown to occur in buffer solution (78.4% after 180 min) and surface water (73.7% after 180 min). Viability was assessed by dye exclusion, excystation, direct examination of oocysts and a novel gene expression assay based on lactate dehydrogenase 1 (LDH1) expression levels. Collectively, this confirmed the inactivation of oocysts and scanning electron microscopy (SEM) confirmed cleavage at the suture line of oocyst cell walls, revealing large numbers of empty (ghost) cells after exposure to photocatalytic treatment.

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Authors+Show Affiliations

Sunnotel O
Biomedical Sciences Research Institute, School of Biomedical Sciences, University of Ulster, Coleraine, Co. Londonderry BT52 1SA, UK.
Verdoold R
No affiliation info available
Dunlop PS
No affiliation info available
Snelling WJ
No affiliation info available
Lowery CJ
No affiliation info available
Dooley JS
No affiliation info available
Moore JE
No affiliation info available
Byrne JA
No affiliation info available

MeSH

Cryptosporidium parvumDisinfectionNanostructuresOocystsPhotolysisRNA, ProtozoanTitaniumWater Purification

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20009250

Citation

Sunnotel, O, et al. "Photocatalytic Inactivation of Cryptosporidium Parvum On Nanostructured Titanium Dioxide Films." Journal of Water and Health, vol. 8, no. 1, 2010, pp. 83-91.
Sunnotel O, Verdoold R, Dunlop PS, et al. Photocatalytic inactivation of Cryptosporidium parvum on nanostructured titanium dioxide films. J Water Health. 2010;8(1):83-91.
Sunnotel, O., Verdoold, R., Dunlop, P. S., Snelling, W. J., Lowery, C. J., Dooley, J. S., Moore, J. E., & Byrne, J. A. (2010). Photocatalytic inactivation of Cryptosporidium parvum on nanostructured titanium dioxide films. Journal of Water and Health, 8(1), 83-91. https://doi.org/10.2166/wh.2009.204
Sunnotel O, et al. Photocatalytic Inactivation of Cryptosporidium Parvum On Nanostructured Titanium Dioxide Films. J Water Health. 2010;8(1):83-91. PubMed PMID: 20009250.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Photocatalytic inactivation of Cryptosporidium parvum on nanostructured titanium dioxide films. AU - Sunnotel,O, AU - Verdoold,R, AU - Dunlop,P S M, AU - Snelling,W J, AU - Lowery,C J, AU - Dooley,J S G, AU - Moore,J E, AU - Byrne,J A, PY - 2009/12/17/entrez PY - 2009/12/17/pubmed PY - 2010/4/21/medline SP - 83 EP - 91 JF - Journal of water and health JO - J Water Health VL - 8 IS - 1 N2 - Control of waterborne gastrointestinal parasites represents a major concern to water industries worldwide. In developed countries, pathogens in drinking water supplies are normally removed by sand filtration followed by chemical disinfection. Cryptosporidium spp. are generally resistant to common disinfection techniques and alternative control strategies are being sought. In the current study, the photocatalytic inactivation of C. parvum oocysts was shown to occur in buffer solution (78.4% after 180 min) and surface water (73.7% after 180 min). Viability was assessed by dye exclusion, excystation, direct examination of oocysts and a novel gene expression assay based on lactate dehydrogenase 1 (LDH1) expression levels. Collectively, this confirmed the inactivation of oocysts and scanning electron microscopy (SEM) confirmed cleavage at the suture line of oocyst cell walls, revealing large numbers of empty (ghost) cells after exposure to photocatalytic treatment. SN - 1477-8920 UR - https://www.unboundmedicine.com/medline/citation/20009250/Photocatalytic_inactivation_of_Cryptosporidium_parvum_on_nanostructured_titanium_dioxide_films_ L2 - https://iwaponline.com/jwh/article-lookup/doi/10.2166/wh.2009.204 DB - PRIME DP - Unbound Medicine ER -