Research Topics
| G W TannockSummaryAffiliation: University of Otago Country: New Zealand Publications
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Detail Information
Publications
Resource partitioning in relation to cohabitation of Lactobacillus species in the mouse forestomachGerald W Tannock
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
ISME J 6:927-38. 2012..This real life, trophic phenomenon conforms to a mathematical model based on in vitro bacterial doubling times, in vitro transport rates, and concentrations of maltose and glucose in mouse stomach digesta...
Probiotic properties of lactic-acid bacteria: plenty of scope for fundamental R & DG W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Trends Biotechnol 15:270-4. 1997..The development of scientifically valid probiotics requires more detailed knowledge of this intestinal microflora than is currently available...- Probiotics: time for a dose of realismGerald W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Curr Issues Intest Microbiol 4:33-42. 2003..These new products, however, will need to be targeted at the alleviation of specific medical conditions, and the mechanistic basis of their effectiveness will need to be provided... 
The search for disease-associated compositional shifts in bowel bacterial communities of humansGerald W Tannock
Department of Microbiology and Immunology, University of Otago, Dunedin, 9054, New Zealand
Trends Microbiol 16:488-95. 2008..Therefore, important challenges remain for bacteriologists in investigations of the bowel bacterial community in relation to disease...- Impact of consumption of oligosaccharide-containing biscuits on the fecal microbiota of humansGerald W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Appl Environ Microbiol 70:2129-36. 2004..Our observations suggest that a phylogenetic approach to analysis of the gut ecosystem may not always be optimal and that a more physiological (biochemical) method might be more informative... - A special fondness for lactobacilliGerald W Tannock
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
Appl Environ Microbiol 70:3189-94. 2004 - Epidemiology, relative invasive ability, molecular characterization, and competitive performance of Campylobacter jejuni strains in the chicken gutChristopher Pope
Department of Microbiology and Immunology, University of Otago, P O Box 56, Dunedin, New Zealand
Appl Environ Microbiol 73:7959-66. 2007..jejuni, that some Campylobacter strains detected in poultry meat are of higher virulence for humans than others, and that bacterial attributes affecting strain virulence and commensal colonization ability may be linked... - Commentary: Remembrance of microbes pastGerald W Tannock
Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
Int J Epidemiol 34:13-5. 2005 - What immunologists should know about bacterial communities of the human bowelGerald W Tannock
Department of Microbiology and Immunology, University of Otago, P O Box 56, 720 Cumberland Street, Dunedin, New Zealand
Semin Immunol 19:94-105. 2007..The role of the bacterial community in the development and regulation of the immune system of neonates seems likely to be a particularly important area of future research... - Molecular analysis of the intestinal microflora in IBDG W Tannock
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
Mucosal Immunol 1:S15-8. 2008..Although alterations in the composition of the microbiota can be demonstrated, future studies need to provide functional links between the candidate proinflammatory agents and disease processes... - Ecological behavior of Lactobacillus reuteri 100-23 is affected by mutation of the luxS geneGerald W Tannock
Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
Appl Environ Microbiol 71:8419-25. 2005..These results demonstrate that LuxS influences important ecological attributes of L. reuteri 100-23C, the consequences of which are niche specific... - Identification of Lactobacillus isolates from the gastrointestinal tract, silage, and yoghurt by 16S-23S rRNA gene intergenic spacer region sequence comparisonsG W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Appl Environ Microbiol 65:4264-7. 1999..It had an advantage over 16S V2-V3 sequence comparisons because it distinguished between isolates of Lactobacillus casei and Lactobacillus rhamnosus... - The bowel microflora: an important source of urinary tract pathogensG W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
World J Urol 17:339-44. 1999..This, in turn, would decrease the dose of potential urinary tract pathogens present in the faeces... - Analysis of the fecal microflora of human subjects consuming a probiotic product containing Lactobacillus rhamnosus DR20G W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Appl Environ Microbiol 66:2578-88. 2000.... - Molecular assessment of intestinal microfloraG W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Am J Clin Nutr 73:410S-414S. 2001..This experimental approach would provide information on the effect of the probiotic on indigenous strains inhabiting the intestinal tract of humans and other animals... - New perceptions of the gut microbiota: implications for future researchGerald W Tannock
Department of Microbiology and Immunology, University of Otago, 720 Cumberland Street, PO Box 56, Dunedin, New Zealand
Gastroenterol Clin North Am 34:361-82, vii. 2005 - The bifidobacterial and Lactobacillus microflora of humansGerald W Tannock
Department of Microbiology, University of Otago, PO Box 56, Dunedin, New Zealand
Clin Rev Allergy Immunol 22:231-53. 2002 - Molecular methods for exploring the intestinal ecosystemG W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Br J Nutr 87:S199-201. 2002..Altered bacterial populations associated with disease states can then be targeted for further investigation. In the long-term, an 'abnormal microflora' might be rectified by the use of probiotics or prebiotics... - Exploring the relationships between intestinal microflora and inflammatory conditions of the human bowel and spineGerald W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Antonie Van Leeuwenhoek 81:529-35. 2002 - PCR/DGGE and 16S rRNA gene library analysis of the colonic microbiota of HLA-B27/beta2-microglobulin transgenic ratsW McBurney
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
Lett Appl Microbiol 42:165-71. 2006.... - Analysis of the intestinal microflora using molecular methodsG W Tannock
Department of Microbiology, University of Otago, Dunedin, New Zealand
Eur J Clin Nutr 56:S44-9. 2002..PCR/DGGE provides a useful screening method to determine the impact of antibiotic treatment on the composition of the intestinal microflora of children and to identify the bacterial groups that are most affected... - Analysis of the large bowel microbiota of colitic mice using PCR/DGGER Bibiloni
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
Lett Appl Microbiol 41:45-51. 2005.... - A new macrocyclic antibiotic, fidaxomicin (OPT-80), causes less alteration to the bowel microbiota of Clostridium difficile-infected patients than does vancomycinGerald W Tannock
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
Microbiology 156:3354-9. 2010..These findings help to explain the substantially reduced rates of relapse following treatment of CDI with fidaxomicin in recent clinical trials... - The bacteriology of biopsies differs between newly diagnosed, untreated, Crohn's disease and ulcerative colitis patientsRodrigo Bibiloni
Department of Agricultural, Food and Nutritional Science, University of Otago, PO Box 56, Dunedin, New Zealand
J Med Microbiol 55:1141-9. 2006..The observations made in this study should permit targeting of specific bacteriological abnormalities in investigations of the pathogenesis of inflammatory bowel diseases and provide targets for medical interventions... - The immune response to autologous bacteroides in ankylosing spondylitis is characterized by reduced interleukin 10 productionSimon M Stebbings
Department of Medicine, University of Otago School of Medicine, PO Box 913, Dunedin 9054, New Zealand
J Rheumatol 36:797-800. 2009..In order to investigate the host immune response in AS, we measured cytokines in tissue culture following exposure of peripheral blood mononuclear cells (PBMC) to autologous colonic bacteria... - A differential effect of 2 probiotics in the prevention of eczema and atopy: a double-blind, randomized, placebo-controlled trialKristin Wickens
Wellington Asthma Research Group, Wellington School of Medicine and Health Sciences, University of Otago, Wellington, New Zealand
J Allergy Clin Immunol 122:788-94. 2008..The role of probiotics in prevention of allergic disease is still not clearly established, although early reports suggested Lactobacillus GG halved the risk of eczema at 2 years... - A high-molecular-mass surface protein (Lsp) and methionine sulfoxide reductase B (MsrB) contribute to the ecological performance of Lactobacillus reuteri in the murine gutJens Walter
Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
Appl Environ Microbiol 71:979-86. 2005..Homologues of lsp and msrB are present in the genomes of several strains of Lactobacillus and may play an important role in the maintenance of these bacteria in gut ecosystems... - Identification, detection, and enumeration of human bifidobacterium species by PCR targeting the transaldolase geneTeresa Requena
Department of Microbiology, University of Otago, Dunedin, New Zealand
Appl Environ Microbiol 68:2420-7. 2002..In the case of samples from infants, 16S rDNA-targeted PCR was superior to PCR targeting the transaldolase gene for the quantification of bifidobacterial populations... - D-alanyl ester depletion of teichoic acids in Lactobacillus reuteri 100-23 results in impaired colonization of the mouse gastrointestinal tractJens Walter
Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
Environ Microbiol 9:1750-60. 2007..This study showed that D-alanylation is an important cell function of L. reuteri that seems to protect this commensal organism against the hostile conditions prevailing in the murine forestomach... - Influence of different functional elements of plasmid pGT232 on maintenance of recombinant plasmids in Lactobacillus reuteri populations in vitro and in vivoN C Heng
Department of Microbiology, University of Otago, Dunedin, New Zealand
Appl Environ Microbiol 65:5378-85. 1999..0-kb sequence which contained a putative single-strand replication origin (SSO). The SSO of pGT232 is believed to be novel and functions in an orientation-specific manner... - Bifidobacterial species differentially affect expression of cell surface markers and cytokines of dendritic cells harvested from cord bloodSarah L Young
Department of Microbiology, University of Otago, Dunedin, New Zealand
Clin Diagn Lab Immunol 11:686-90. 2004..bifidum, B. longum, and B. pseudocatenulatum induce a Th2-driven immune response. A hypothesis is presented to link our observations to the prevalence of atopic diseases in different countries... - Glucosyltransferase A (GtfA) and inulosucrase (Inu) of Lactobacillus reuteri TMW1.106 contribute to cell aggregation, in vitro biofilm formation, and colonization of the mouse gastrointestinal tractJens Walter
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
Microbiology 154:72-80. 2008..From the evidence provided in this study we conclude that GtfA and Inu confer important ecological attributes of L. reuteri TMW1.106 and contribute to colonization of the mouse gastrointestinal tract... - Gut commensal Lactobacillus reuteri 100-23 stimulates an immunoregulatory responseMegan Livingston
Department of Microbiology and Immunology, University of Otago, Dunedin, New Zealand
Immunol Cell Biol 88:99-102. 2010..reuteri 100-23 stimulated the development of an increased number of regulatory T cells... - Construction, analysis, and beta-glucanase screening of a bacterial artificial chromosome library from the large-bowel microbiota of miceJens Walter
Department of Microbiology and Immunology, University of Otago, PO Box 56, Dunedin, New Zealand
Appl Environ Microbiol 71:2347-54. 2005.... - Detection and identification of Lactobacillus species in crops of broilers of different ages by using PCR-denaturing gradient gel electrophoresis and amplified ribosomal DNA restriction analysisLe Luo Guan
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada T6G 2P5
Appl Environ Microbiol 69:6750-7. 2003..The results of our study provide comprehensive knowledge of the Lactobacillus microflora in the crops of birds of different ages using nucleic acid-based methods of detection and identification based on current taxonomic criteria... - Identification of Lactobacillus reuteri genes specifically induced in the mouse gastrointestinal tractJens Walter
Institute of Food Technology, University of Hohenheim, Stuttgart, Germany
Appl Environ Microbiol 69:2044-51. 2003..Our IVET system has the potential to identify genes of lactobacilli that have not previously been functionally characterized but which may be essential for growth of these bacteria in the gastrointestinal ecosystem... - Effects of dietary fat source and subtherapeutic levels of antibiotic on the bacterial community in the ileum of broiler chickens at various agesAne Knarreborg
Department of Animal Nutrition and Physiology, Danish Institute of Agricultural Sciences, Research Centre Foulum, Tjele, Denmark
Appl Environ Microbiol 68:5918-24. 2002..Moreover, different strains (clonal variants of the alpha-toxin gene) of C. perfringens type A were detected in response to age, dietary fat source, and dietary supplementation with antibiotics... - Differential clustering of bowel biopsy-associated bacterial profiles of specimens collected in Mexico and Canada: what do these profiles represent?Rodrigo Bibiloni
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
J Med Microbiol 57:111-7. 2008..Therefore, biopsy-associated bacteria are likely to represent, at least in part, contaminants from the fluid, which resembles a faecal solution, that pools in the bowel after cleansing prior to endoscopy... - Effect of a milk formula containing probiotics on the fecal microbiota of asian infants at risk of atopic diseasesKa Weng Mah
Department of Paediatrics, National University of Singapore, Singapore 119074
Pediatr Res 62:674-9. 2007..4 versus 7.4; p = 0.035). Our results indicate that supplemented strains could be detected but did not persist in the bowel once probiotic administration had ceased... - Reduction of colitis by prebiotics in HLA-B27 transgenic rats is associated with microflora changes and immunomodulationFrank Hoentjen
Center for Gastrointestinal Biology and Disease, University of North Carolina, Chapel Hill, North Carolina, USA
Inflamm Bowel Dis 11:977-85. 2005..These results show promise for prebiotics as primary or adjuvant maintenance therapy for chronic inflammatory bowel diseases... - Detection, characterization, and in vitro and in vivo expression of genes encoding S-proteins in Lactobacillus gallinarum strains isolated from chicken cropsKaren E Hagen
Department of Agricultural, Food and Nutritional Science, University of Alberta, Canada
Appl Environ Microbiol 71:6633-43. 2005..The results of this study provide a basis for the investigation of gene duplication and sequence variation as mechanisms by which bacterial strains of the same species can share the same habitat... - Supplementation of the diet with high-viscosity beta-glucan results in enrichment for lactobacilli in the rat cecumJennifer Snart
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Canada
Appl Environ Microbiol 72:1925-31. 2006..The results of this study have relevance to the use of purified beta-glucan products as dietary supplements for human consumption... - Dietary fibres as "prebiotics": implications for colorectal cancerChiara C Lim
Discipline of Nutrition, Faculty of Medicine and Health Sciences, The University of Auckland, Auckland, New Zealand
Mol Nutr Food Res 49:609-19. 2005..However, their mechanisms of action in humans are speculative, and research aimed at providing an integrated view of the gut microbiota and dietary fibre nutrition of humans needs to be developed... - Real-time quantitative PCR measurement of ileal Lactobacillus salivarius populations from broiler chickens to determine the influence of farming practicesSally A Harrow
New Zealand Institute for Crop and Food Research Limited, Christchurch, New Zealand
Appl Environ Microbiol 73:7123-7. 2007..salivarius population relative to that of chickens given the control diet, as did administration of bacitracin and monensin in the feed. These changes in the target bacterial population were associated with improved broiler weight gain... - Bifidobacterium pseudocatenulatum is associated with atopic eczema: a nested case-control study investigating the fecal microbiota of infantsClaudia Gore
North West Lung Research Center, Wythenshawe Hospital, Manchester, United Kingdom
J Allergy Clin Immunol 121:135-40. 2008..Exposure to specific bacterial bowel commensals may increase/reduce the risk of atopic diseases... - Sucrose utilization and impact of sucrose on glycosyltransferase expression in Lactobacillus reuteriClarissa Schwab
Department Agricultural Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada
Syst Appl Microbiol 30:433-43. 2007..Our data thus indicate that these glycosyltransferases affect the competitiveness of some L. reuteri strains in ecosystems where sucrose is present... - Hygeia versus AsclepiusGerald W Tannock
Future Microbiol 1:345-9. 2006 - Analysis of bacterial bowel communities of IBD patients: what has it revealed?Harry Sokol
Gastroenterology and Nutrition Unit, Saint Antoine Hospital, APHP, Paris, France
Inflamm Bowel Dis 14:858-67. 2008..Confounding factors need to be eliminated from future studies by using better-defined patient populations of newly diagnosed and untreated individuals and by improved sampling procedures... - VSL#3 probiotic-mixture induces remission in patients with active ulcerative colitisRodrigo Bibiloni
Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
Am J Gastroenterol 100:1539-46. 2005..At least some of the bacterial species incorporated in the probiotic product reached the target site in amounts that could be detected...