I. Olsen

F. Dewhirst, A. Martner, I. Olsen, 2010, Journal of interferon & cytokine research : the official journal of the International Society for Interferon and Cytokine Research.

Characterization of Streptococcus constellatus strains recovered from a brain abscess and periodontal pockets in an immunocompromised patient.

D. Caugant, I. Olsen, L. Tronstad, 2004, Journal of periodontology.

Acute Glomerulonephritis Associated with Streptococcus Pyogenes with Concomitant Spread of Streptococcus Constellatus in Four Rural Families

I. Olsen, L. Svensson, E. R. Eribe, 2005, Upsala journal of medical sciences.

Oral bacterial DNAs in synovial fluids of arthritis patients

R. Jonsson, I. Olsen, J. Brun, 2005 .

Porphyromonas gingivalis suppresses adaptive immunity in periodontitis, atherosclerosis, and Alzheimer’s disease

I. Olsen, S. Singhrao, M. Taubman, 2016, Journal of oral microbiology.

Antibody levels to single bacteria or in combination evaluated against myocardial infarction.

P. Schwarze, P. Nafstad, I. Olsen, 2008, Journal of clinical periodontology.

Acute focal infections of dental origin.

A. V. van Winkelhoff, I. Olsen, 2014, Periodontology 2000.

Update on bacteraemia related to dental procedures.

I. Olsen, 2008, Transfusion and apheresis science : official journal of the World Apheresis Association : official journal of the European Society for Haemapheresis.

Organization of supragingival plaque at the micron scale

I. Olsen, 2018, Journal of oral microbiology.

Notes: Differentiation Between Actinobacillus actinomycetemcomitans and Haemophilus aphrophilus by High-Resolution, Two-Dimensional Protein Electrophoresis

E. Jellum, I. Olsen, Vigdis Tingelstad, 1984 .

Bacteremia in conjunction with endodontic therapy.

I. Olsen, L. Tronstad, G. Debelian, 1995, Endodontics & dental traumatology.

Oral health and cardiovascular disease risk factors and mortality of cerebral haemorrhage, cerebral infarction and unspecified stroke in elderly men: A prospective cohort study

P. Schwarze, P. Nafstad, L. Håheim, 2019, Scandinavian journal of public health.

Sphingolipids in Bacteria and Fungi

I. Olsen, E. Jantzen, 2001 .

Evaluation of the effect of two chlorhexidine preparations on biofilm bacteria in vitro: a three-dimensional quantitative analysis.

Ya Shen, I. Olsen, M. Haapasalo, 2009, Journal of endodontics.

3-hydroxy fatty acids in a lipopolysaccharide-like material from Treponema denticola strain FM.

I. Olsen, U. Dahle, L. Tronstad, 1996, Endodontics & dental traumatology.

The role of viruses in oral disease

I. Olsen, B. Grinde, 2010, Journal of oral microbiology.

Low level of antibodies to the oral bacterium Tannerella forsythia predicts bladder cancers and Treponema denticola predicts colon and bladder cancers: A prospective cohort study

P. Schwarze, I. Olsen, K. Rønningen, 2022, PloS one.

Chromosome- and Plasmid-Encoded β-Lactamases in Capnocytophaga spp

D. Caugant, I. Olsen, T. Fosse, 2005, Antimicrobial Agents and Chemotherapy.

Chromosome- and Plasmid-Encoded (cid:2) -Lactamases in Capnocytophaga spp.

D. Caugant, I. Olsen, T. Fosse, 2005 .

Oral microbiota in autoimmune polyendocrine syndrome type 1

R. Jonsson, Tsute Chen, E. Husebye, 2018, Journal of oral microbiology.

Multiple Bacteria in Calcific Aortic Valve Stenosis

I. Olsen, K. Kolltveit, O. Geiran, 2002 .

Fungi in therapy-resistant apical periodontitis.

I. Olsen, M. Haapasalo, E. Sirén, 1997, International endodontic journal.

Fatty acid contents of the yeast and mycelial phase of Candida albicans.

I. Olsen, I. Brondz, 1990, Journal of chromatography.

Multiple Bacteria in Calcié c Aortic Valve Stenosis

I. Olsen, K. Kolltveit, O. Geiran, 2002 .

Bacteriophage infection--a possible mechanism for increased virulence of bacteria associated with rapidly destructive periodontitis.

I. Olsen, P. Gjermo, H. Preus, 1987, Acta odontologica Scandinavica.

Genetic diversity of Porphyromonas gingivalis and its possible importance to pathogenicity

I. Olsen, N. Özmeriç, Hans Ragnar Preus, 2000, Acta odontologica Scandinavica.

Profiling of Propionibacterium acnes recovered from root canal and blood during and after endodontic treatment.

I. Olsen, L. Tronstad, G. Debelian, 1992, Endodontics & dental traumatology.

Scanning electron microscopy of bacteria in the apical part of root canals in permanent teeth with periapical lesions.

I. Olsen, K. Kerekes, O. Molven, 1991, Endodontics & dental traumatology.

Microbiota of periapical lesions refractory to endodontic therapy.

I. Olsen, L. Tronstad, G. Debelian, 2002, Journal of endodontics.

Beta-lactamase production and antimicrobial susceptibility of subgingival bacteria from refractory periodontitis.

D. Caugant, I. Olsen, C. Walker, 2004, Oral microbiology and immunology.

SDS-PAGE of Whole-Cell Proteins and Random Amplified Polymorphic DNA (RAPD) Analyses of Leptotrichia Isolates

I. Olsen, E. R. Eribe, 2002 .

Spirochaetes in oral infections.

I. Olsen, U. Dahle, L. Tronstad, 1993, Endodontics & dental traumatology.

Outer membrane vesicles – offensive weapons or good Samaritans?

A. Amano, I. Olsen, 2015, Journal of oral microbiology.

Fluorescence in situ hybridization (FISH) for direct visualization of bacteria in periapical lesions of asymptomatic root-filled teeth.

U. Göbel, I. Olsen, A. Moter, 2003, Microbiology.

Extraradicular infection: a methodological study.

I. Olsen, L. Tronstad, P. T. Sunde, 2000, Endodontics & dental traumatology.

Observation of an unusually large spirochete in endodontic infection.

I. Olsen, U. Dahle, L. Tronstad, 1993, Oral microbiology and immunology.

Leptotrichia species in infections II

I. Olsen, E. R. Eribe, 2017 .

[Mouth-rinsing with chlorhexidine for prevention of pneumonia].

O. Spigset, I. Olsen, P. Løkken, 2010, Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke.

Multivariate analyses of cellular fatty acids in Bacteroides, Prevotella, Porphyromonas, Wolinella, and Campylobacter spp

I. Olsen, I. Brondz, 1991, Journal of clinical microbiology.

Relationship between nitrate/nitrite concentration in saliva and oral candidosis

I. Olsen, O. Bøckman, B. Mortensen, 2005 .

Denture stomatitis. Effects of chlorhexidine and amphotericin B on the mycotic flora.

I. Olsen, 1975, Acta odontologica Scandinavica.

Salient structural features in the chemical composition of oral anaerobes, with particular emphasis on plasmalogens and sphingolipids

I. Olsen, 1997 .

Reclassification of Bacteroides levii (Holdeman, Cato, and Moore) in the genus Porphyromonas, as Porphyromonas levii comb. nov.

M. Collins, F. Dewhirst, B. Paster, 1995 .

Genetic Structure of Population of Bacillus cereus and B. thuringiensis Isolates Associated with Periodontitis and Other Human Infections

A. Kolstø, D. Caugant, I. Olsen, 2000, Journal of Clinical Microbiology.

Attachment of Treponema denticola to cultured human epithelial cells.

I. Olsen, 1984, Scandinavian journal of dental research.

Comparison of lipopolysaccharides from Bacteroides, Porphyromonas, Prevotella, Campylobacter and Wolinella spp. by tricine-SDS-PAGE.

I. Olsen, H. Zandi, J. Firoozkoohi, 1997, Endodontics & dental traumatology.

Bacterial diversity in aortic aneurysms determined by 16S ribosomal RNA gene analysis.

J. A. Aas, D. Caugant, I. Olsen, 2006, Journal of vascular surgery.

Leptotrichia and Leptotrichia-Like Organisms

I. Olsen, E. R. Eribe, 2011 .

Anaerobic bacteremia and fungemia in patients undergoing endodontic therapy: an overview.

I. Olsen, L. Tronstad, G. Debelian, 1998, Annals of periodontology.

Systemic diseases caused by oral microorganisms.

I. Olsen, L. Tronstad, G. Debelian, 1994, Endodontics & dental traumatology.

Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands

I. Olsen, I. Brondz, And Relevant Profiling, 1986 .

Strategies for the inhibition of gingipains for the potential treatment of periodontitis and associated systemic diseases

J. Potempa, I. Olsen, 2014, Journal of oral microbiology.

Systemic Diseases Caused by Oral Infection

I. Olsen, K. Kolltveit, L. Tronstad, 2000, Clinical Microbiology Reviews.

Bacteria of Dental Caries in Primary and Permanent Teeth in Children and Young Adults

J. A. Aas, Floyd E. Dewhirst, F. Dewhirst, 2008, Journal of Clinical Microbiology.

Aureobasidium infection of the jaw.

I. Olsen, P. Sandven, H. Koppang, 1991, Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology.

Periodontitis, Microbiomes and their Role in Alzheimer’s Disease

I. Olsen, S. Singhrao, S. Crean, 2017, Front. Aging Neurosci..

Denture stomatitis. The clinical effects of chlorhexidine and amphotericin B.

I. Olsen, 1975, Acta odontologica Scandinavica.

Microbial chemotaxonomy. Chromatography, electrophoresis and relevant profiling techniques.

I. Olsen, I. Brondz, 1986, Journal of chromatography.

Observation of Saccharomyces cerevisiae in blood of patient undergoing root canal treatment.

I. Olsen, L. Tronstad, G. Debelian, 1997, International endodontic journal.

I. Olsen, E. R. Eribe, J. Sun, 2006, Oral microbiology and immunology.

Experimental palatal candidosis and saliva flow in monkeys.

I. Olsen, H. Haanaes, 1977, Scandinavian journal of dental research.

Oral Distribution of Genera, Species and Biotypes of Yeasts in Patients with Marginal Periodontitis

Xiaobo Song, Jinglu Sun, I. Olsen, 2003 .

Denture stomatitis. Relapse tendency and removal of acquired discolourations in long-term denture disinfection with chlorhexidine.

I. Olsen, 1975, Acta odontologica Scandinavica.

Subgingival plaque microbiota in HIV positive patients.

J. A. Aas, F. Dewhirst, B. Paster, 2007, Journal of clinical periodontology.

Assessment of denture plaque pH in subjects with and without denture stomatitis.

I. Olsen, J. Birkeland, 1975, Scandinavian journal of dental research.

Experiments on in vivo biofilm formation and in vitro adhesion of Candida species on polysiloxane liners.

I. Olsen, A. Doǧan, T. Närhi, 2010, Gerodontology.

Colony morphologies, species, and biotypes of yeasts from thrush and denture stomatitis

Xiaobo Song, Jinglu Sun, I. Olsen, 2009, Acta odontologica Scandinavica.

Xiaobo Song, Jinglu Sun, I. Olsen, 2005, Journal of periodontal research.

Experimental Candida-induced denture stomatitis in the Wistar rat.

I. Olsen, O. Bondevik, 1978, Scandinavian journal of dental research.

Should patients with hip joint prosthesis receive antibiotic prophylaxis before dental treatment?

E. Lingaas, I. Olsen, F. Snorrason, 2010, Journal of oral microbiology.

Initiation and aggravation of denture stomatitis by sucrose rinses.

I. Olsen, J. Birkeland, 1976, Scandinavian journal of dental research.

Diversity and site-specificity of the oral microflora in the elderly

B. Paster, I. Olsen, B. Grinde, 2009, European Journal of Clinical Microbiology & Infectious Diseases.

Yeasts in periodontal pockets.

I. Olsen, P. Gjermo, E. R. Eribe, 2001, Journal of clinical periodontology.

Electrophoresis of whole-cell soluble proteins of microorganisms isolated from bacteremias in endodontic therapy.

I. Olsen, L. Tronstad, G. Debelian, 1996, European journal of oral sciences.

The Family Fusobacteriaceae

I. Olsen, 2014 .

Phylogeny of Bacteroides, Prevotella, and Porphyromonas spp. and related bacteria

F. Dewhirst, B. Paster, I. Olsen, 1994, Journal of bacteriology.

Fusobacterium and Leptotrichia

I. Olsen, T. Hofstad, 2010 .

Approaches to the study of the systematics of anaerobic, gram-negative, non-sporeforming rods: current status and perspectives.

S. Gharbia, Radhey S. Gupta, I. Olsen, 2009, Anaerobe.

Dysgonomonas gen. nov. to accommodate Dysgonomonas gadei sp. nov., an organism isolated from a human gall bladder, and Dysgonomonas capnocytophagoides (formerly CDC group DF-3).

P. Lawson, M. Collins, E. Falsen, 2000, International journal of systematic and evolutionary microbiology.

Genetic diversity of Leptotrichia and description of Leptotrichia goodfellowii sp. nov., Leptotrichia hofstadii sp. nov., Leptotrichia shahii sp. nov. and Leptotrichia wadei sp. nov.

F. Dewhirst, B. Paster, D. Caugant, 2004, International journal of systematic and evolutionary microbiology.

Antibiotic Resistance in Bacteria Isolated from Subgingival Plaque in a Norwegian Population with Refractory Marginal Periodontitis

D. Caugant, I. Olsen, T. Handal, 2003, Antimicrobial Agents and Chemotherapy.

Subgingival microflora in chronic obstructive pulmonary disease

B. Paster, I. Olsen, O. Geiran, 2009 .

Subgingival microfl ora in chronic obstructive pulmonary disease

B. Paster, I. Olsen, O. Geiran, 2009 .

High Throughput Sequencing Detect Gingivitis And Periodontal Oral Bacteria In Alzheimer’s Disease Autopsy Brains

I. Olsen, H. Siddiqui, S. Singhrao, 2019, Neuro Research.

High Throughput Sequencing Detect Gingivitis and Periodontal Oral Bacteria in Alzheimer ’ s Disease

I. Olsen, H. Siddiqui, S. Singhrao, 2019 .

Ribotyping of bacteria from root canal and blood of patients receiving endodontic therapy.

I. Olsen, E. R. Eribe, L. Tronstad, 1997, Anaerobe.

DNA-DNA hybridization demonstrates multiple bacteria in osteoradionecrosis.

I. Olsen, E. R. Eribe, G. Støre, 2005, International journal of oral and maxillofacial surgery.

Leptotrichia species in human infections.

I. Olsen, E. R. Eribe, 2008, Anaerobe.

Phylogeny of 54 representative strains of species in the family Pasteurellaceae as determined by comparison of 16S rRNA sequences

F. Dewhirst, B. Paster, I. Olsen, 1992, Journal of bacteriology.

Determination of bound cellular fatty acids in Actinobacillus actinomycetemcomitans and Haemophilus aphrophilus by gas chromatography and gas chromatography-mass spectrometry

I. Olsen, I. Brondz, 1998 .

Are Porphyromonas gingivalis Outer Membrane Vesicles Microbullets for Sporadic Alzheimer’s Disease Manifestation?

I. Olsen, S. Singhrao, 2018, Journal of Alzheimer's disease reports.

Chemotaxonomy of selected species of the Actinobacillus-Haemophilus-Pasteurella group by means of gas chromatography, gas chromatography-mass spectrometry and bioenzymatic methods.

I. Olsen, I. Brondz, 1986, Journal of chromatography.

Mucus is more than just a physical barrier for trapping oral microorganisms

I. Olsen, 2020, Journal of oral microbiology.

The Oral Microbiome in Health and Disease

I. Olsen, 2016 .

Microarray analysis of the microflora of root caries in elderly

B. Paster, S. K. Boches, I. Olsen, 2009, European Journal of Clinical Microbiology & Infectious Diseases.

Bacterial Profiles of Root Caries in Elderly Patients

J. A. Aas, B. Paster, I. Olsen, 2008, Journal of Clinical Microbiology.

Synovial inflammation in active rheumatoid arthritis and psoriatic arthritis facilitates trapping of a variety of oral bacterial DNAs.

R. Jonsson, I. Olsen, J. Brun, 2006, Clinical and experimental rheumatology.

New principles in ecological regulation – features from the oral cavity

I. Olsen, 2006 .

Comorbidity of periodontal disease: two sides of the same coin? An introduction for the clinician

A. Flyvbjerg, P. Hansen, I. Olsen, 2017, Journal of oral microbiology.

The breadth of bacterial diversity in the human periodontal pocket and other oral sites.

J. A. Aas, F. Dewhirst, B. Paster, 2006, Periodontology 2000.

Are Sphingolipids and Serine Dipeptide Lipids Underestimated Virulence Factors of Porphyromonas gingivalis?

I. Olsen, F. Nichols, 2018, Infection and Immunity.

The proteome of the human parotid gland secretion in elderly with and without root caries

Bernd Thiede, Bjørn Grinde, B. Thiede, 2009, Acta odontologica Scandinavica.

Changes in the supragingival microbiota surrounding brackets of upper central incisors during orthodontic treatment

B. Paster, I. Olsen, B. Øgaard, 2013, Acta odontologica Scandinavica.

Periodontal Pathogens and Associated Intrathecal Antibodies in Early Stages of Alzheimer's Disease.

A. Johnen, T. Duning, J. Potempa, 2018, Journal of Alzheimer's disease : JAD.

Poor Oral Health and Its Neurological Consequences: Mechanisms of Porphyromonas gingivalis Involvement in Cognitive Dysfunction

I. Olsen, S. Singhrao, 2019, Current Oral Health Reports.

Osteoradionecrosis contains a wide variety of cultivable and non-cultivable bacteria

J. A. Aas, I. Olsen, E. R. Eribe, 2010, Journal of oral microbiology.

Phylogeny of the Pasteurellaceae as determined by comparison of 16S ribosomal ribonucleic acid sequences.

F. Dewhirst, B. Paster, I. Olsen, 1993, Zentralblatt fur Bakteriologie : international journal of medical microbiology.

Multilocus Sequence Typing of Porphyromonas gingivalis Strains from Different Geographic Origins

A. V. van Winkelhoff, D. Caugant, I. Olsen, 2006, Journal of Clinical Microbiology.

Porphyromonas gingivalis and its CRISPR-Cas system

Tsute Chen, I. Olsen, 2019, Journal of oral microbiology.

Oral microbiota and autism spectrum disorder (ASD)

I. Olsen, S. Hicks, 2019, Journal of oral microbiology.

Human papillomavirus subtypes in oral lesions compared to healthy oral mucosa.

I. Olsen, B. Grinde, A. K. Kristoffersen, 2012, Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology.

Invasion of Porphyromonas gingivalis strains into vascular cells and tissue

A. Progulske-Fox, I. Olsen, 2015, Journal of oral microbiology.

Possible role of Porphyromonas gingivalis in orodigestive cancers

I. Olsen, Ö. Yilmaz, 2019, Journal of oral microbiology.

Citrullination as a plausible link to periodontitis, rheumatoid arthritis, atherosclerosis and Alzheimer’s disease

J. Potempa, I. Olsen, S. Singhrao, 2018, Journal of oral microbiology.

Relationship between serine dipeptide lipids of commensal Bacteroidetes and atherosclerosis

I. Olsen, 2018, Journal of oral microbiology.

In silico Comparison of 19 Porphyromonas gingivalis Strains in Genomics, Phylogenetics, Phylogenomics and Functional Genomics

Tsute Chen, I. Olsen, H. Siddiqui, 2017, Front. Cell. Infect. Microbiol..

Modulation of inflammasome activity by Porphyromonas gingivalis in periodontitis and associated systemic diseases

I. Olsen, Ö. Yilmaz, 2016, Journal of oral microbiology.

Bacteria and bacterial DNA in atherosclerotic plaque and aneurysmal wall biopsies from patients with and without periodontitis

I. Olsen, A. K. Kristoffersen, J. Jørgensen, 2014, Journal of oral microbiology.

Assessing the role of Porphyromonas gingivalis in periodontitis to determine a causative relationship with Alzheimer’s disease

I. Olsen, S. Singhrao, 2019, Journal of oral microbiology.

Genetic exchange and reassignment in Porphyromonas gingivalis

Tsute Chen, I. Olsen, G. Tribble, 2018, Journal of oral microbiology.

Porphyromonas gingivalis disturbs host–commensal homeostasis by changing complement function

John D Lambris, J. Lambris, I. Olsen, 2017, Journal of oral microbiology.

Chemical differences in lipopolysaccharides from Actinobacillus (Haemophilus) actinomycetemcomitans and Haemophilus aphrophilus: clues to differences in periodontopathogenic potential and taxonomic distinction

I. Olsen, I. Brondz, 1989, Infection and immunity.

Porphyromonas gingivalis-Induced Neuroinflammation in Alzheimer’s Disease

I. Olsen, 2021, Frontiers in Neuroscience.

Ultrasonic dispersion of pure cultures of plaque bacteria and plaque.

S. Socransky, I. Olsen, 1981, Scandinavian journal of dental research.

Brain abscesses caused by oral infection.

I. Olsen, X. Li, L. Tronstad, 1999, Endodontics & dental traumatology.

Direct analysis of free fatty acids in bacteria by gas chromatography.

I. Olsen, I. Brondz, T. Greibroek, 1983, Journal of chromatography.

Antimicrobial resistance with focus on oral beta-lactamases.

I. Olsen, T. Handal, Ingar Olsen, 2000, European journal of oral sciences.

Inflammasome Involvement in Alzheimer's Disease.

I. Olsen, S. Singhrao, 2016, Journal of Alzheimer's disease : JAD.

Assessment of periradicular microbiota by DNA‐DNA hybridization

I. Olsen, E. R. Eribe, L. Tronstad, 2000, Endodontics & dental traumatology.

Interaction between genetic factors, Porphyromonas gingivalis and microglia to promote Alzheimer’s disease

I. Olsen, S. Singhrao, 2020, Journal of oral microbiology.

Intra-injector methylation of free fatty acids from aerobically and anaerobically cultured Actinobacillus actinomycetemcomitans and Haemophilus aphrophilus.

I. Olsen, I. Brondz, 1992, Journal of chromatography.

Multilevel analysis of clinical parameters in chronic periodontitis after root planing/scaling, surgery, and systemic and local antibiotics: 2-year results

S. Socransky, A. Haffajee, M. Thoresen, 2012, Journal of oral microbiology.

Detection and characterization of beta-lactamase genes in subgingival bacteria from patients with refractory periodontitis.

D. Caugant, I. Olsen, C. Walker, 2005, FEMS microbiology letters.

Extended-spectrum beta-lactamase-producing bacteria are not detected in supragingival plaque samples from human fecal carriers of ESBL-producing Enterobacteriaceae

A. Sundsfjord, I. Olsen, P. Jenum, 2014, Journal of oral microbiology.

Bacterial sex in dental plaque

I. Olsen, N. Fiehn, G. Tribble, 2013, Journal of oral microbiology.

Chromosome- and plasmid-encoded beta-lactamases in Capnocytophaga spp.

D. Caugant, I. Olsen, T. Fosse, 2005, Antimicrobial agents and chemotherapy.

Is there a link between genetic defects in the complement cascade and Porphyromonas gingivalis in Alzheimer’s disease?

I. Olsen, S. Singhrao, 2019, Journal of oral microbiology.

Determination of acids in whole lipopolysaccharide and in free lipid A from Actinobacillus actinomycetemcomitans and Haemophilus aphrophilus.

I. Olsen, I. Brondz, 1998, Journal of Chromatography A.

Multivariate analyses of cellular fatty acids and carbohydrates of 1:2:1 and 2:4:2 spirochetes

M. Sjöström, I. Olsen, N. Fiehn, 1991, APMIS : acta pathologica, microbiologica, et immunologica Scandinavica.

Carbohydrates of whole defatted cells as a basis for differentiation between actinobacillus actinomycetemcomitans and haemophilus aphrophilus

I. Olsen, I. Brondz, 1984 .

Differentiation of actinobacillus actinomycetemcomitans from haemophilus aphrophilus by gas chromatography of hexane extracts from whole cells

I. Olsen, I. Brondz, 1983 .

Taxonomy of spirochetes

Floyd E. Dewhirst, F. Dewhirst, B. Paster, 2000 .

Genome Sequence of Porphyromonas gingivalis Strain HG66 (DSM 28984)

J. Potempa, I. Olsen, K. Nguyen, 2014, Genome Announcements.

Can oral bacteria affect the microbiome of the gut?

I. Olsen, K. Yamazaki, 2019, Journal of oral microbiology.

Differentiation between Haemophilus paraphrophilus, H. aphrophilus, H. influenzae, Actinobacillus actinomycetemcomitans, Pasteurella multocida, P. haemolytica, and P. ureae by high resolution two‐dimensional protein electrophoresis

A. K. Thorsrud, E. Jellum, I. Olsen, 1987 .

Whole-cell methanolysis as a rapid method for differentiation between Actinobacillus actinomycetemcomitans and Haemophilus aphrophilus.

I. Olsen, I. Brondz, 1984, Journal of chromatography.

Oral, intestinal, and skin bacteria in ventral hernia mesh implants

O. Røkke, I. Olsen, A. K. Kristoffersen, 2016, Journal of oral microbiology.

Apolipoprotein E Related Co-Morbidities and Alzheimer's Disease.

L. Kesavalu, I. Olsen, S. Singhrao, 2016, Journal of Alzheimer's Disease.

Strand-specific transcriptome profiling with directly labeled RNA on genomic tiling microarrays

Tsute Chen, I. Olsen, Wen-Han Yu, 2011, BMC Molecular Biology.

Bacterial diversity in persistent periapical lesions on root-filled teeth

D. Caugant, I. Olsen, P. T. Sunde, 2009, Journal of oral microbiology.

Enzymatic/Biochemical and Cellular Fatty Acid Analyses of Leptotrichia Isolates

I. Olsen, T. Hofstad, E. R. Eribe, 2002 .

Porphyromonas Gingivalis May Seek the Alzheimer’s Disease Brain to Acquire Iron from Its Surplus

I. Olsen, 2021, Journal of Alzheimer's disease reports.

Periodontitis, pathogenesis and progression: miRNA-mediated cellular responses to Porphyromonas gingivalis

I. Olsen, S. Singhrao, H. Osmundsen, 2017, Journal of oral microbiology.

Surface Structure, Hydrophobicity, Phagocytosis, and Adherence to Matrix Proteins of Bacillus cereus Cells with and without the Crystalline Surface Protein Layer

K. Lounatmaa, I. Olsen, J. Meurman, 1998, Infection and Immunity.

The synergistic antimicrobial effect by mechanical agitation and two chlorhexidine preparations on biofilm bacteria.

Ya Shen, I. Olsen, M. Haapasalo, 2010, Journal of endodontics.

Differentiation between major species of the Actinobacillus--Haemophilus--Pasteurella group by gas chromatography of trifluoroacetic acid anhydride derivatives from whole-cell methanolysates.

I. Olsen, I. Brondz, 1985, Journal of chromatography.

Multilevel analysis of bacterial counts from chronic periodontitis after root planing/scaling, surgery, and systemic and local antibiotics: 2-year results

S. Socransky, A. Haffajee, M. Thoresen, 2013, Journal of oral microbiology.

Microbial community succession on developing lesions on human enamel

B. Paster, I. Olsen, B. Øgaard, 2012, Journal of oral microbiology.

Importance of heterogeneity in Porhyromonas gingivalis lipopolysaccharide lipid A in tissue specific inflammatory signalling

I. Olsen, S. Singhrao, 2018, Journal of oral microbiology.

Possible effects of Porphyromonas gingivalis on the blood–brain barrier in Alzheimer’s disease

I. Olsen, 2021, Expert review of anti-infective therapy.

Can Porphyromonas gingivalis Contribute to Alzheimer’s Disease Already at the Stage of Gingivitis?

I. Olsen, 2021, Journal of Alzheimer's disease reports.

Characterization of new periodontal and endodontic isolates of spirochetes.

I. Olsen, U. Dahle, L. Tronstad, 1996, European journal of oral sciences.

A new method for routine isolation of oral treponemes using U-tubes and pectin medium.

I. Olsen, U. Dahle, L. Tronstad, 1995, Anaerobe.

Population genetic analysis of oral treponemes by multilocus enzyme electrophoresis.

D. Caugant, I. Olsen, U. Dahle, 1995, Oral microbiology and immunology.

Multivariate analyses of fatty acid data from whole-cell methanolysates of Prevotella, Bacteroides and Porphyromonas spp.

A. V. van Winkelhoff, I. Olsen, M. Haapasalo, 1991, Journal of general microbiology.

Intra-injector formation of methyl esters from phenoxy acid pesticides

I. Olsen, I. Brondz, 1992 .

Leif Tronstad and Ingar Infection Systemic Diseases Caused by Oral

I. Olsen, K. Kolltveit, L. Tronstad, 2000 .

Low levels of salivary lactoferrin may affect oral dysbiosis and contribute to Alzheimer's disease: A hypothesis.

I. Olsen, S. Singhrao, 2020, Medical hypotheses.

Porphyromonas gingivalis infection may contribute to systemic and intracerebral amyloid-beta: implications for Alzheimer’s disease onset

I. Olsen, S. Singhrao, 2020, Expert review of anti-infective therapy.

Review of chemosystematics: multivariate approaches to oral bacteria and yeasts.

I. Olsen, I. Brondz, Ingar Olsen, 1992, Acta odontologica Scandinavica.

Comprehensive Transcriptome Analysis of the Periodontopathogenic Bacterium Porphyromonas gingivalis W83

Wen-Han Yu, Tsute Chen, Hedda Høvik, 2011, Journal of bacteriology.

Cultivated and not-yet-cultivated bacteria in oral biofilms

J. A. Aas, B. Paster, I. Olsen, 2009 .

Comparing clinical attachment level and pocket depth for predicting periodontal disease progression in healthy sites of patients with chronic periodontitis using multi-state Markov models

Magne Thoresen, Birgitte Freiesleben de Blasio, S. Socransky, 2014, Journal of clinical periodontology.

Modification of phage for increased antibacterial effect towards dental biofilm

I. Olsen, 2016, Journal of oral microbiology.

Differentiation between Actinobacillus actinomycetemcomitans and Haemophilus aphrophilus based on carbohydrates in lipopolysaccharide.

I. Olsen, I. Brondz, 1984, Journal of Chromatography A.

Multivariate analyses of carbohydrate data from lipopolysaccharides of Actinobacillus (Haemophilus) actinomycetemcomitans, Haemophilus aphrophilus, and Haemophilus paraphrophilus.

I. Olsen, I. Brondz, Ingar Olsen, 1990, International journal of systematic bacteriology.

Differentiation among closely related organisms of the Actinobacillus-Haemophilus-Pasteurella group by means of lysozyme and EDTA

I. Olsen, I. Brondz, 1985, Journal of clinical microbiology.

[Bacteria-killing viruses, Stalinists and "superbugs"].

I. Olsen, P. Løkken, T. Handal, 2001, Tidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke.

Clinical color intensity of white spot lesions might be a better predictor of enamel demineralization depth than traditional clinical grading.

Hanna Tiainen, Lino Torlakovic, Bjørn Øgaard, 2012, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

Multivariate chemosystematics demonstrate two groups of Actinobacillus actinomycetemcomitans strains.

I. Olsen, I. Brondz, Ingar Olsen, 1993, Oral microbiology and immunology.

Application of multivariate analyses of enzymic data to classification of members of the Actinobacillus-Haemophilus-Pasteurella group.

I. Olsen, I. Brondz, V. Myhrvold, 1992, International journal of systematic bacteriology.

Review on oral infections and atherosclerosis.

I. Olsen, K. Kolltveit, L. Tronstad, 2000 .

Scanning and transmission electron microscopy demonstrates bacteria in osteoradionecrosis.

I. Olsen, G. Støre, 2005, International journal of oral and maxillofacial surgery.

Differentiation between Bacteroides gingivalis, Bacteroides endodontalis and Bacteroides asaccharolyticus by means of HPLC analysis of non-derivatized free metabolic acids.

I. Olsen, K. Kerekes, H. Johansen, 1988, Oral microbiology and immunology.

Detection of Actinobacillus actinomycetemcomitans but not bacteria of the red complex in aortic aneurysms by multiplex polymerase chain reaction.

D. Caugant, I. Olsen, P. S. Lingaas, 2005, Journal of periodontology.

Strain differentiation in Bacteroides fragilis by RAPD and Dendron computer‐assisted gel analysis

I. Olsen, E. R. Eribe, 2000, APMIS : acta pathologica, microbiologica, et immunologica Scandinavica.

Strain differentiation in Bacteroides fragilis by ribotyping and computer‐assisted gel analysis

I. Olsen, E. R. Eribe, 2000, APMIS : acta pathologica, microbiologica, et immunologica Scandinavica.

Scanning and transmission electron microscopy demonstrates bacteria in

I. Olsen, G. Støre, 2005 .

S-layers of Bacillus species.

I. Olsen, M. Sidhu, I. Olsen, 1997, Microbiology.

New promising β-lactamase inhibitors for clinical use

I. Olsen, I. Olsen, 2015, European Journal of Clinical Microbiology & Infectious Diseases.

Severe chronic obstructive pulmonary disease: association with marginal bone loss in periodontitis.

I. Olsen, O. Geiran, M. Lund, 2008, Respiratory medicine.

Diversity of Veillonella spp. from subgingival plaque by polyphasic approach

B. Paster, I. Olsen, A. K. Kristoffersen, 2010, APMIS : acta pathologica, microbiologica, et immunologica Scandinavica.

Rejection of Clostridium putrificum and conservation of Clostridium botulinum and Clostridium sporogenes : request for an opinion

John L. Johnson, L. Moore, W. Moore, 1995 .

Detection of tet(M) and tet(O) using the polymerase chain reaction in bacteria isolated from patients with periodontal disease.

F. Tenover, I. Olsen, I. Olsen, 1995, Oral microbiology and immunology.

Osteoradionecrosis contains a wide variety of cultivable and non-cultivable bacteria

J. A. Aas, I. Olsen, E. R. Eribe, 2010, Journal of oral microbiology.

A proposal for reclassification of oral candidosis.

T. Axéll, L. Samaranayake, I. Olsen, 1997, Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics.

Biofilm-specific antibiotic tolerance and resistance

I. Olsen, I. Olsen, 2015, European Journal of Clinical Microbiology & Infectious Diseases.

Sugar composition of lipopolysaccharide from Haemophilus paraphrophilus.

I. Olsen, I. Brondz, 1985, Journal of chromatography.

New promising β-lactamase inhibitors for clinical use

I. Olsen, I. Olsen, 2015, European Journal of Clinical Microbiology & Infectious Diseases.

Multilevel analysis of clinical parameters in chronic periodontitis after root planing/scaling, surgery, and systemic and local antibiotics: 2-year results

S. Socransky, A. Haffajee, M. Thoresen, 2012, Journal of oral microbiology.

Ftir Studies of the Reaction between the Nitrate Radical and Haloethenes. Part I. Vinylchloride.

J. Hjorth, I. Olsen, C. Nielsen, 1990 .

International Committee on Systematics of Prokaryotes; Subcommittee on the taxonomy of Gram-negative anaerobic rods

I. Olsen, H. Shah, 2008 .