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Richard Ellen

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Thommie Karlsson; Vesa-Matti Loitto; Richard P Ellen; Glogauer Michael; Karl-Eric Magnusson; Marco A O Magalhães
Aquaporin 9 phosphorylation mediates membrane localization and neutrophil polarization.
M B Visser; Richard P Ellen
New insights into the emerging role of oral spirochaetes in periodontal disease.
Michelle B Visser; Glogauer Michael; Adeline Koh; Richard P Ellen
Treponema denticola major outer sheath protein induces actin assembly at free barbed ends by a PIP2-dependent uncapping mechanism in fibroblasts.

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All Publications

2011: Thommie Karlsson; Vesa-Matti Loitto; Richard P Ellen; Glogauer Michael; Karl-Eric Magnusson; Marco A O Magalhães
Aquaporin 9 phosphorylation mediates membrane localization and neutrophil polarization.
Journal of leukocyte biology 2011;90(5):963-73.
2011: M B Visser; Richard P Ellen
New insights into the emerging role of oral spirochaetes in periodontal disease.
Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases 2011;17(4):502-12.
2011: Michelle B Visser; Glogauer Michael; Adeline Koh; Richard P Ellen
Treponema denticola major outer sheath protein induces actin assembly at free barbed ends by a PIP2-dependent uncapping mechanism in fibroblasts.
PloS one 2011;6(8):e23736.
2009: Andre Paes Batista da Silva; Richard P Ellen; Esben S Sørensen; Harvey A Goldberg; Ron Zohar; Jaro Sodek
Osteopontin attenuation of dextran sulfate sodium-induced colitis in mice.
Laboratory investigation; a journal of technical methods and pathology 2009;89(10):1169-81.
2008: Richard P Ellen; Richard Singleton
Human rights and ethical considerations in oral health research.
Journal (Canadian Dental Association) 2008;74(5):439.
2008: Mohsen Amin; Karl-Eric Magnusson; Andras Kapus; Glogauer Michael; Richard P Ellen
Treponema denticola Msp-deduced peptide conjugate, P34BSA, promotes RhoA-dependent actin stress fiber formation independent of its internalization by fibroblasts.
Cell motility and the cytoskeleton 2008;65(5):406-21.
2008: Marco A O Magalhães; Chun Xiang Sun; Glogauer Michael; Richard P Ellen
The major outer sheath protein of Treponema denticola selectively inhibits Rac1 activation in murine neutrophils.
Cellular microbiology 2008;10(2):344-54.
2007: Mohsen Amin; David A Grove; Andras Kapus; Glogauer Michael; Richard P Ellen
An actin-stabilizing peptide conjugate deduced from the major outer sheath protein of the bacterium Treponema denticola.
Cell motility and the cytoskeleton 2007;64(9):662-74.
2007: Marco A O Magalhães; Fei Zhu; Helen Sarantis; Scott D Gray-Owen; Richard P Ellen; Glogauer Michael
Expression and translocation of fluorescent-tagged p21-activated kinase-binding domain and PH domain of protein kinase B during murine neutrophil chemotaxis.
Journal of leukocyte biology 2007;82(3):559-66.
2007: Marie-Claude Jobin; Inderpreet Virdee; Christopher A McCulloch; Richard P Ellen
Activation of MAPK in fibroblasts by Treponema denticola major outer sheath protein.
Biochemical and biophysical research communications 2007;356(1):213-8.
2006: Marinella Holzhausen; Luis Carlos Spolidorio; Richard P Ellen; Marie-Claude Jobin; Martin Steinhoff; Patricia Andrade-Gordon; Nathalie Vergnolle
Protease-activated receptor-2 activation: a major role in the pathogenesis of Porphyromonas gingivalis infection.
The American journal of pathology 2006;168(4):1189-99.
2006: Bina Puthengady Thomas; Chun Xiang Sun; Elena Bajenova; Richard P Ellen; Glogauer Michael
Modulation of human neutrophil functions in vitro by Treponema denticola major outer sheath protein.
Infection and immunity 2006;74(3):1954-7.
2005: Richard P Ellen; W J Loesche; D Bratthall
Discovering the impact of Ronald Gibbons on dental research and beyond.
Journal of dental research 2005;84(12):1089-92.
2005: M Dilani Senadheera; Bernard Guggenheim; Grace A Spatafora; Yi-Chen Cathy Huang; Jison Choi; David C I Hung; Jennifer S Treglown; Steven D Goodman; Richard P Ellen; Dennis G Cvitkovitch
A VicRK signal transduction system in Streptococcus mutans affects gtfBCD, gbpB, and ftf expression, biofilm formation, and genetic competence development.
Journal of bacteriology 2005;187(12):4064-76.
2005: Céline M Lévesque; Elena Voronejskaia; Yi-Chen Cathy Huang; Richard W Mair; Richard P Ellen; Dennis G Cvitkovitch
Involvement of sortase anchoring of cell wall proteins in biofilm formation by Streptococcus mutans.
Infection and immunity 2005;73(6):3773-7.
2005: Wen-Kuan Xin; Xiao-Han Zhao; Jindong Xu; Gang Lei; Chun L Kwan; Kang-Min Zhu; Jae-Sung Cho; Missy Duff; Richard P Ellen; Christopher A McCulloch; Xian-Min Yu
The removal of extracellular calcium: a novel mechanism underlying the recruitment of N-methyl-D-aspartate (NMDA) receptors in neurotoxicity.
The European journal of neuroscience 2005;21(3):622-36.
2005: Wen-Kuan Xin; Chun L Kwan; Xiao-Han Zhao; Jindong Xu; Richard P Ellen; Christopher A McCulloch; Xian-Min Yu
A functional interaction of sodium and calcium in the regulation of NMDA receptor activity by remote NMDA receptors.
The Journal of neuroscience : the official journal of the Society for Neuroscience 2005;25(1):139-48.
2005: Richard P Ellen; Vaia B Galimanas
Spirochetes at the forefront of periodontal infections.
Periodontology 2000 2005;38():13-32.
2004: Per Alstergren; Baoqian Zhu; Glogauer Michael; Michael Glougauer; Tak W Mak; Richard P Ellen; Jaro Sodek
Polarization and directed migration of murine neutrophils is dependent on cell surface expression of CD44.
Cellular immunology 2004;231(1-2):146-57.
2004: Marcelo B Aspiras; Richard P Ellen; Dennis G Cvitkovitch
ComX activity of Streptococcus mutans growing in biofilms.
FEMS microbiology letters 2004;238(1):167-74.
2004: V Andreou; Mario D'Addario; Ron Zohar; Balram Sukhu; Robert F Casper; Richard P Ellen; Howard C Tenenbaum
Inhibition of osteogenesis in vitro by a cigarette smoke-associated hydrocarbon combined with Porphyromonas gingivalis lipopolysaccharide: reversal by resveratrol.
Journal of periodontology 2004;75(7):939-48.
2004: Mohsen Amin; Andy C S Ho; Jenny Y Lin; Andre Paes Batista da Silva; Glogauer Michael; Richard P Ellen
Induction of de novo subcortical actin filament assembly by Treponema denticola major outer sheath protein.
Infection and immunity 2004;72(6):3650-4.
2004: Andre Paes Batista da Silva; Wilson Lee; Elena Bajenova; Christopher A McCulloch; Richard P Ellen
The major outer sheath protein of Treponema denticola inhibits the binding step of collagen phagocytosis in fibroblasts.
Cellular microbiology 2004;6(5):485-98.
2004: L Li; D Matevski; Marcelo B Aspiras; Richard P Ellen; Guylaine Lépine
Two epithelial cell invasion-related loci of the oral pathogen Actinobacillus actinomycetemcomitans.
Oral microbiology and immunology 2004;19(1):16-25.
2003: Mario D'Addario; Pamela D Arora; Richard P Ellen; Christopher A McCulloch
Regulation of tension-induced mechanotranscriptional signals by the microtubule network in fibroblasts.
The Journal of biological chemistry 2003;278(52):53090-7.
2003: Dennis G Cvitkovitch; Yung-Hua Li; Richard P Ellen
Quorum sensing and biofilm formation in Streptococcal infections.
The Journal of clinical investigation 2003;112(11):1626-32.
2003: Donco Matevski; Robert Weersink; Howard C Tenenbaum; Brian Wilson; Richard P Ellen; Guylaine Lépine
Lethal photosensitization of periodontal pathogens by a red-filtered Xenon lamp in vitro.
Journal of periodontal research 2003;38(4):428-35.
2002: Mario D'Addario; Pamela D Arora; Richard P Ellen; Christopher A McCulloch
Interaction of p38 and Sp1 in a mechanical force-induced, beta 1 integrin-mediated transcriptional circuit that regulates the actin-binding protein filamin-A.
The Journal of biological chemistry 2002;277(49):47541-50.
2002: Yung-Hua Li; Peter C. Y. Lau; Nan Tang; Gunnel Svensäter; Richard P Ellen; Dennis G Cvitkovitch
Novel two-component regulatory system involved in biofilm formation and acid resistance in Streptococcus mutans.
Journal of bacteriology 2002;184(22):6333-42.
2002: Joseph M DiRienzo; M Song; L S Y Wan; Richard P Ellen
Kinetics of KB and HEp-2 cell responses to an invasive, cytolethal distending toxin-producing strain of Actinobacillus actinomycetemcomitans.
Oral microbiology and immunology 2002;17(4):245-51.
2002: Yung-Hua Li; Nan Tang; Marcelo B Aspiras; Peter C. Y. Lau; Janet H Lee; Richard P Ellen; Dennis G Cvitkovitch
A quorum-sensing signaling system essential for genetic competence in Streptococcus mutans is involved in biofilm formation.
Journal of bacteriology 2002;184(10):2699-708.
2001: Yung-Hua Li; M N Hanna; Gunnel Svensäter; Richard P Ellen; Dennis G Cvitkovitch
Cell density modulates acid adaptation in Streptococcus mutans: implications for survival in biofilms.
Journal of bacteriology 2001;183(23):6875-84.
2001: Mario D'Addario; Pamela D Arora; J Fan; Bernhard Ganss; Richard P Ellen; Christopher A McCulloch
Cytoprotection against mechanical forces delivered through beta 1 integrins requires induction of filamin A.
The Journal of biological chemistry 2001;276(34):31969-77.
2001: Qinghua Wang; KS Ko; Andras Kapus; Christopher A McCulloch; Richard P Ellen
A spirochete surface protein uncouples store-operated calcium channels in fibroblasts: a novel cytotoxic mechanism.
The Journal of biological chemistry 2001;276(25):23056-64.
2001: Yung-Hua Li; Peter C. Y. Lau; Janet H Lee; Richard P Ellen; Dennis G Cvitkovitch
Natural genetic transformation of Streptococcus mutans growing in biofilms.
Journal of bacteriology 2001;183(3):897-908.
2000: Richard P Ellen; KS Ko; C M Lo; David A Grove; K Ishihara
Insertional inactivation of the prtP gene of Treponema denticola confirms dentilisin's disruption of epithelial junctions.
Journal of molecular microbiology and biotechnology 2000;2(4):581-6.
2000: Guylaine Lépine; Richard P Ellen
MglA and mglB of Treponema denticola; similarity to ABC transport and spa genes.
DNA sequence : the journal of DNA sequencing and mapping 2000;11(5):419-31.
1999: Z Wu; K Wong; Glogauer Michael; Richard P Ellen; Christopher A McCulloch
Regulation of stretch-activated intracellular calcium transients by actin filaments.
Biochemical and biophysical research communications 1999;261(2):419-25.
1999: Richard P Ellen
Perturbation and exploitation of host cell cytoskeleton by periodontal pathogens.
Microbes and infection / Institut Pasteur 1999;1(8):621-32.
1999: T Battikhi; Wilson Lee; Christopher A McCulloch; Richard P Ellen
Treponema denticola outer membrane enhances the phagocytosis of collagen-coated beads by gingival fibroblasts.
Infection and immunity 1999;67(3):1220-6.
1998: Guylaine Lépine; Suzanne Caudry; Joseph M DiRienzo; Richard P Ellen
Epithelial cell invasion by Actinobacillus actinomycetemcomitans strains from restriction fragment-length polymorphism groups associated with juvenile periodontitis or carrier status.
Oral microbiology and immunology 1998;13(6):341-7.
1998: Peter M Loomer; Richard P Ellen; Howard C Tenenbaum
Effects of Porphyromonas gingivalis 2561 extracts on osteogenic and osteoclastic cell function in co-culture.
Journal of periodontology 1998;69(11):1263-70.
1998: Peter M Loomer; Richard P Ellen; Howard C Tenenbaum
Osteogenic and osteoclastic cell interaction: development of a co-culture system.
Cell and tissue research 1998;294(1):99-108.
1998: Richard P Ellen
Microbial colonization of the peri-implant environment and its relevance to long-term success of osseointegrated implants.
The International journal of prosthodontics 1998;11(5):433-41.
1998: KS Ko; Glogauer Michael; Christopher A McCulloch; Richard P Ellen
Treponema denticola outer membrane inhibits calcium flux in gingival fibroblasts.
Infection and immunity 1998;66(2):703-9.
1998: P F Yang; M Song; David A Grove; Richard P Ellen
Filamentous actin disruption and diminished inositol phosphate response in gingival fibroblasts caused by Treponema denticola.
Infection and immunity 1998;66(2):696-702.
1997: T L Wright; Richard P Ellen; J M Lacroix; Selva Sinnadurai; MW Mittelman
Effects of metronidazole on Porphyromonas gingivalis biofilms.
Journal of periodontal research 1997;32(5):473-7.
1997: Richard P Ellen; Guylaine Lépine; P M Nghiem
In vitro models that support adhesion specificity in biofilms of oral bacteria.
Advances in dental research 1997;11(1):33-42.
1997: Richard P Ellen
Educational focus on the science of periodontology.
Ontario dentist 1997;74(1):27-31.
1996: Guylaine Lépine; Richard P Ellen; Ann Progulske-Fox
Construction and preliminary characterization of three hemagglutinin mutants of Porphyromonas gingivalis.
Infection and immunity 1996;64(4):1467-72.
1996: Richard P Ellen; Christopher A McCulloch
Evidence versus empiricism: rational use of systemic antimicrobial agents for treatment of periodontitis.
Periodontology 2000 1996;10():29-44.
1995: Richard P Ellen
Discovering Canada's oral tradition: dental research in the second half of the 20th century. Part 2: Strengths, innovations, and new directions in dental research in Canada.
Journal of dental research 1995;74(12):1822-5.
1995: Richard P Ellen
Discovering Canada's oral tradition: dental research in the second half of the 20th century.
Journal of dental research 1995;74(11):1726-30.
1995: Peter M Loomer; Richard P Ellen; Howard C Tenenbaum
Characterization of inhibitory effects of suspected periodontopathogens on osteogenesis in vitro.
Infection and immunity 1995;63(9):3287-96.
1995: K Fung; Richard P Ellen; Christopher A McCulloch
Development of a computer program for teaching periodontal diagnosis based on clinical epidemiological principles.
Journal of dental education 1995;59(3):433-41.
1995: A B De Filippo; Richard P Ellen; Christopher A McCulloch
Induction of cytoskeletal rearrangements and loss of volume regulation in epithelial cells by Treponema denticola.
Archives of oral biology 1995;40(3):199-207.
1994: Richard P Ellen; H Veisman; I A Buivids; M Rosenberg
Kinetics of lactose-reversible coadhesion of Actinomyces naeslundii WVU 398A and Streptococcus oralis 34 on the surface of hexadecane droplets.
Oral microbiology and immunology 1994;9(6):364-71.
1994: Richard P Ellen
Critical discussion of essentials of diagnosis and recording in periodontics.
Journal of dental education 1994;58(8):620-4.
1994: Richard P Ellen; M Song; Christopher A McCulloch
Degradation of endogenous plasma membrane fibronectin concomitant with Treponema denticola 35405 adhesion to gingival fibroblasts.
Infection and immunity 1994;62(7):3033-7.
1994: J R Dawson; Richard P Ellen
Clustering of fibronectin adhesins toward Treponema denticola tips upon contact with immobilized fibronectin.
Infection and immunity 1994;62(6):2214-21.
1994: Peter M Loomer; B Sigusch; Balram Sukhu; Richard P Ellen; Howard C Tenenbaum
Direct effects of metabolic products and sonicated extracts of Porphyromonas gingivalis 2561 on osteogenesis in vitro.
Infection and immunity 1994;62(4):1289-97.
1994: Richard P Ellen; J R Dawson; P F Yang
Treponema denticola as a model for polar adhesion and cytopathogenicity of spirochetes.
Trends in microbiology 1994;2(4):114-9.
1994: J F Tessier; Gajanan Kulkarni; Richard P Ellen; Christopher A McCulloch
Probing velocity: novel approach for assessment of inflamed periodontal attachment.
Journal of periodontology 1994;65(2):103-8.
1993: D Levy; A Csima; P Birek; Richard P Ellen; Christopher A McCulloch
Impact of microbiological consultation on clinical decision making: a case-control study of clinical management of recurrent periodontitis.
Journal of periodontology 1993;64(11):1029-39.
1993: J F Tessier; Richard P Ellen; P Birek; Gajanan Kulkarni; Christopher A McCulloch
Relationship between periodontal probing velocity and gingival inflammation in human subjects.
Journal of clinical periodontology 1993;20(1):41-8.
1992: Richard P Ellen; M Song; I A Buivids
Inhibition of Actinomyces viscosus--Porphyromonas gingivalis coadhesion by trypsin and other proteins.
Oral microbiology and immunology 1992;7(4):198-203.
1992: E Freeman; Richard P Ellen; G Thompson; S E Weinberg; M Song; R H Lazarus
Gingival crevicular fluid concentration and side effects of minocycline: a comparison of two dose regimens.
Journal of periodontology 1992;63(1):13-8.
1991: P A Goulbourne; Richard P Ellen
Evidence that Porphyromonas (Bacteroides) gingivalis fimbriae function in adhesion to Actinomyces viscosus.
Journal of bacteriology 1991;173(17):5266-74.
1991: M Rosenberg; I A Buivids; Richard P Ellen
Adhesion of Actinomyces viscosus to Porphyromonas (Bacteroides) gingivalis-coated hexadecane droplets.
Journal of bacteriology 1991;173(8):2581-9.
1991: J Li; Richard P Ellen; C I Hoover; J R Felton
Association of proteases of Porphyromonas (Bacteroides) gingivalis with its adhesion to Actinomyces viscosus.
Journal of dental research 1991;70(2):82-6.
1990: J R Dawson; Richard P Ellen
Tip-oriented adherence of Treponema denticola to fibronectin.
Infection and immunity 1990;58(12):3924-8.
1989: J Li; Richard P Ellen
Relative adherence of Bacteroides species and strains to Actinomyces viscosus on saliva-coated hydroxyapatite.
Journal of dental research 1989;68(9):1308-12.
1989: Richard P Ellen; D A Grove
Bacteroides gingivalis vesicles bind to and aggregate Actinomyces viscosus.
Infection and immunity 1989;57(5):1618-20.
1989: Richard P Ellen; I A Buivids; J R Simardone
Actinomyces viscosus fibril antigens detected by immunogold electron microscopy.
Infection and immunity 1989;57(4):1327-31.
1988: Richard P Ellen; S Schwarz-Faulkner; D A Grove
Coaggregation among periodontal pathogens, emphasizing Bacteroides gingivalis--Actinomyces viscosus cohesion on a saliva-coated mineral surface.
Canadian journal of microbiology 1988;34(3):299-306.
1987: S Schwarz; Richard P Ellen; D A Grove
Bacteroides gingivalis-Actinomyces viscosus cohesive interactions as measured by a quantitative binding assay.
Infection and immunity 1987;55(10):2391-7.
1985: Richard P Ellen; D W Banting; E D Fillery
Longitudinal microbiological investigation of a hospitalized population of older adults with a high root surface caries risk.
Journal of dental research 1985;64(12):1377-81.
1985: Richard P Ellen; D W Banting; E D Fillery
Streptococcus mutans and Lactobacillus detection in the assessment of dental root surface caries risk.
Journal of dental research 1985;64(10):1245-9.
1985: Richard P Ellen; D A Grove
Assignment of Actinomyces viscosus and Actinomyces naeslundii strains to numerical taxonomy clusters by immunofluorescence based on antifibril antisera.
Journal of clinical microbiology 1985;21(5):850-3.
1983: N Masuda; Richard P Ellen; E D Fillery; D A Grove
Chemical and immunological comparison of surface fibrils of strains representing six taxonomic groups of Actinomyces viscosus and Actinomyces naeslundii.
Infection and immunity 1983;39(3):1325-33.
1983: Richard P Ellen; E D Fillery; K Seckington
Infrequent polysaccharide cohesion among Actinomyces viscosus and Actinomyces naeslundii fresh isolates of human origin.
Journal of periodontal research 1983;18(1):50-5.
1981: N Masuda; Richard P Ellen; D A Grove
Purification and characterization of surface fibrils from taxonomically typical Actinomyces viscosus WVU627.
Journal of bacteriology 1981;147(3):1095-104.
1980: D W Banting; Richard P Ellen; E D Fillery
Prevalence of root surface caries among institutionalized older persons.
Community dentistry and oral epidemiology 1980;8(2):84-8.
1980: Richard P Ellen; E D Fillery; D W Banting
Comparison of selective broth and plating methods for isolation of Streptococcus mutans from root surface dental plaques.
Journal of clinical microbiology 1980;11(3):205-8.
1980: Richard P Ellen; E D Fillery; K H Chan; D A Grove
Sialidase-enhanced lectin-like mechanism for Actinomyces viscosus and Actinomyces naeslundii hemagglutination.
Infection and immunity 1980;27(2):335-43.