Search Results - "HELANDER, I. M"

Chitosan disrupts the barrier properties of the outer membrane of Gram-negative bacteria by Helander, I.M, Nurmiaho-Lassila, E.-L, Ahvenainen, R, Rhoades, J, Roller, S

“…The mode of antimicrobial action of chitosan (polymeric β-1,4- N-acetylglucosamine) on Gram-negative bacteria was studied with special emphasis on its ability…”
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Lactic Acid Permeabilizes Gram-Negative Bacteria by Disrupting the Outer Membrane by Alakomi, H L, Skyttä, E, Saarela, M, Mattila-Sandholm, T, Latva-Kala, K, Helander, I M

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Fluorometric assessment of Gram-negative bacterial permeabilization by Helander, I.M, Mattila-Sandholm, T

“…Uptake of the fluorescent probe 1-N-phenylnaphthylamine (NPN), as adapted to an automated spectrofluorometer enabling multiwell reading of microtitre plates,…”
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Weakening Effect of Cell Permeabilizers on Gram-Negative Bacteria Causing Biodeterioration by ALAKOMI, H.-L, PAANANEN, A, SUIHKO, M.-L, HELANDER, I. M, SAARELA, M

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Effect of EDTA on Salmonella enterica serovar Typhimurium involves a component not assignable to lipopolysaccharide release by Alakomi, H.-L, Saarela, M, Helander, I. M

“…1 VTT Biotechnology, PO Box 1500, FIN-02044 VTT, Espoo, Finland 2 Department of Applied Chemistry and Microbiology, Division of Microbiology, University of…”
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Potential of lactic acid bacteria and novel antimicrobials against Gram-negative bacteria by Helander, I.M., von Wright, A., Mattila-Sandholm, T-M.

“…Lactic acid bacteria (LAB) produce a variety of low molecular mass compounds including acids, alcohols, carbon dioxide, diacetyl, hydrogen peroxide and other…”
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Polyethyleneimine is an effective permeabilizer of Gram-negative bacteria by Helander, IIkka M, Alakomi, Hanna-Leena, Latva-Kala, Kyosti, Koski, Pertti

“…VTT Biotechnology and Food Research, PO Box 1501, FIN-02044 VTT, Espoo, Finland Department of Vaccine Development, KTL, Mannerheimintie 166, FIN-00300,…”
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Low biological activity of Helicobacter pylori lipopolysaccharide by Muotiala, A, Helander, I M, Pyhälä, L, Kosunen, T U, Moran, A P

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Compositional analysis of Helicobacter pylori rough-form lipopolysaccharides by MORAN, A. P, HELANDER, I. M, KOSUNEN, T. U

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Permeabilizing action of polyethyleneimine on Salmonella typhimurium involves disruption of the outer membrane and interactions with lipopolysaccharide by Helander, Ilkka M, Latva-Kala, Kyosti, Lounatmaa, Kari

“…VTT Biotechnology and Food Research, PO Box 1501, FIN-02044 VTT, Espoo, Finland Institute of Biotechnology, Electron Microscopy, University of Helsinki, PO Box…”
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Characterisation of aerobic gram-negative bacteria from subgingival sites of dogs - potential bite wound pathogens by FORSBLOM, B, SARKIALA-KESSEL, E, KANERVO, A, VAISANEN, M.-L, HELANDER, I.M, JOUSIMIES-SOMER, H

“…Department of Bacteriology, National Public Health Institute, Helsinki, Finland, *Allpets Clinic, Boulder, CO, USA and VTT Biotechnology, Espoo, Finland…”
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Cellular fatty acyl and alkenyl residues in Megasphaera and Pectinatus species: contrasting profiles and detection of beer spoilage by Helander, Ilkka M, Haikara, Auli

“…1 Department of Bacterial Vaccine Research and Molecular Biology, National Public Health Institute, Mannerheimintie 166, FIN-00300 Helsinki, Finland 2 VTT…”
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Biochemical characterization of Campylobacter fetus lipopolysaccharides by MORAN, A. P, O'MALLEY, D. T, KOSUNEN, T. U, HELANDER, I. M

“…Lipopolysaccharides (LPS) of five strains of the human and animal pathogen Campylobacter fetus were electrophoretically and chemically characterized. Analysis…”
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Characterization of the Action of Selected Essential Oil Components on Gram-Negative Bacteria by Helander, Ilkka M, Alakomi, Hanna-Leena, Latva-Kala, Kyösti, Mattila-Sandholm, Tiina, Pol, Irene, Smid, Eddy J, Gorris, Leon G. M, von Wright, Atte

“…Carvacrol, (+)-carvone, thymol, and trans-cinnamaldehyde were tested for their inhibitory activity against Escherichia coli O157:H7 and Salmonella typhimurium…”
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Permeability barrier of the Gram-negative bacterial outer membrane with special reference to nisin by Helander, Ilkka M, Mattila-Sandholm, Tiina

“…The effect of nisin pretreatment on organic acid-induced permeability increase in strains of Escherichia coli, Pseudomonas aeruginosa, P. marginalis, and…”
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Outer membrane proteins and lipopolysaccharides in pathovars of Xanthomonas campestris by Ojanen, T, Helander, I.M, Haahtela, K, Korhonen, T.K, Laakso, T

“…Variations in the outer membrane proteins (OMPs) and lipopolysaccharides (LPSs) of 54 isolates belonging to 16 different pathovars of Xanthomonas campestris…”
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Lack of O‐antigen is essential for plasminogen activation by Yersinia pestis and Salmonella enterica by Kukkonen, Maini, Suomalainen, Marjo, Kyllönen, Päivi, Lähteenmäki, Kaarina, Lång, Hannu, Virkola, Ritva, Helander, Ilkka M., Holst, Otto, Korhonen, Timo K.

“…Summary The O‐antigen of lipopolysaccharide (LPS) is a virulence factor in enterobacterial infections, and the advantage of its genetic loss in the lethal…”
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Separation and characterization of two chemically distinct lipopolysaccharides in two Pectinatus species by Helander, I.M. (National Public Health Institute, Helsinki), Hurme, R, Haikara, A, Moran, A.P

“…Lipopolysaccharides (LPS) from the type strains of the anaerobic beer spoilage bacteria Pectinatus cerevisiiphilus and P. frisingensis were extracted with the…”
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The Lipid a Biosynthesis Deficiency of the Escherichia Coli Antibiotic-Supersensitive Mutant LH530 is Suppressed by a Novel Locus, ORF195 by Hirvas, Laura, Nurminen, Marjatta, Helander, Ilkka M, Vuorio, Riitta, Vaara, Martti

“…1 Department of Bacteriology and Immunology, Haartman Institute, PO Box 21 (Haartmaninkatu 3), SF-00014 University of Helsinki, Helsinki, Finland 2 Department…”
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New Salmonella typhimurium mutants with altered outer membrane permeability by SUKUPOLVI, S, VAARA, M, HELANDER, I. M, VILJANEN, P, MAKELA, P. H

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