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Research Output 1987 2019

1995
31 Citations (Scopus)

Role of the capsular polysaccharide-like serotype-specific antigen in resistance of Actinobacillus actinomycetemcomitans to phagocytosis by human polymorphonuclear leukocytes

Yamaguchi, N., Kawasaki, M., Yamashita, Y., Nakashima, K. & Koga, T., Jan 1 1995, In : Infection and Immunity. 63, 12, p. 4589-4594 6 p.

Research output: Contribution to journalArticle

Aggregatibacter actinomycetemcomitans
Phagocytosis
Polysaccharides
Neutrophils
Antigens

Semiquantitative analysis of periodontopathogens by gene amplification

Sumi, Y., Yamashita, Y., Nakano, Y. & Koga, T., Jan 1 1995, In : Japanese Journal of Medical Science and Biology. 48, 4, p. 177-191 15 p.

Research output: Contribution to journalArticle

Gene Amplification
Polymerase chain reaction
Bacteria
Assays
Aggregatibacter actinomycetemcomitans
15 Citations (Scopus)

Surface proteins of Streptococcus mutans.

Koga, T., Yamashita, Y., Nakano, Y., Kawasaki, M., Oho, T., Yu, H., Nakai, M. & Okahashi, N., Jan 1 1995, In : Developments in biological standardization. 85, p. 363-369 7 p.

Research output: Contribution to journalArticle

Bacterial Gene Expression Regulation
Bacterial Vaccines
Bacterial Adhesion
Bacterial Genes
Synthetic Vaccines
1994
5 Citations (Scopus)

Effective method for discriminating between oral bacterial and human alkaline phosphatase activity

Shibata, Y., Yamashita, Y., Miyazaki, H., Ueno, S. & Takehara, T., Jan 1 1994, In : Oral Microbiology and Immunology. 9, 1, p. 35-39 5 p.

Research output: Contribution to journalArticle

Alkaline Phosphatase
Gingival Crevicular Fluid
Bacteria
Sodium Dodecyl Sulfate
Prevotella intermedia
9 Citations (Scopus)

Relationship between dental caries experience of a group of Japanese kindergarten children and the results of two caries activity tests conducted on their saliva and dental plaque

ANSAI, T., Yamashita, Y., Shibata, Y., KATOH, Y., SAKAO, S., TAKAMATSU, N., MIYAZAKI, H. & TAKEHARA, T., Jan 1 1994, In : International Journal of Paediatric Dentistry. 4, 1, p. 13-17 5 p.

Research output: Contribution to journalArticle

Dental Plaque
Dental Caries
Saliva
Streptococcus mutans
Japan
1993
76 Citations (Scopus)

Molecular characterization of a Streptococcus mutans mutant altered in environmental stress responses

Yamashita, Y., Takehara, T. & Kuramitsu, H. K., Jan 1 1993, In : Journal of bacteriology. 175, 19, p. 6220-6228 9 p.

Research output: Contribution to journalArticle

Diacylglycerol Kinase
Cosmids
Streptococcus mutans
Osmolar Concentration
Sequence Analysis
34 Citations (Scopus)

Prevalence of malocclusion in high school students in Japan according to the Dental Aesthetic Index

Ansai, T., Miyazaki, H., Katoh, Y., Yamashita, Y., Takehara, T. & Jenny, J., Jan 1 1993, In : Community Dentistry and Oral Epidemiology. 21, 5, p. 303-305 3 p.

Research output: Contribution to journalArticle

Dental Esthetics
Malocclusion
Japan
Students
Orthodontics
1992
5 Citations (Scopus)

Mechanism of water‐insoluble glucan synthesis in Streptococcus sobrinus

Takehara, T., Ansai, T., Yamashita, Y., Itoh‐Andoh, M., Hanada, N. & Kunimori, A., Jan 1 1992, In : Oral Microbiology and Immunology. 7, 3, p. 155-158 4 p.

Research output: Contribution to journalArticle

Streptococcus sobrinus
Glucans
Dextrans
Glucosides
Centrifugation
1991
10 Citations (Scopus)

Effect of Calcium Ions on Cell Surface Electrostatics of Bacteroides gingivalis and Other Oral Bacteria

Yamashita, Y., Kunimori, A. & Takehara, T., Jan 1 1991, In : Zentralblatt fur Bakteriologie. 275, 1, p. 46-53 8 p.

Research output: Contribution to journalArticle

Porphyromonas gingivalis
Static Electricity
Electrodes
Ions
Calcium
56 Citations (Scopus)

Periodontal condition of pregnant women assessed by CPITN

Miyazaki, H., Yamashita, Y., Shirahama, R., Goto‐Kimura, K., Shimada, N., Sogame, A. & Takehara, T., Jan 1 1991, In : Journal of Clinical Periodontology. 18, 10, p. 751-754 4 p.

Research output: Contribution to journalArticle

Periodontal Index
Pregnant Women
Periodontal Diseases
Preventive Health Services
Pregnancy
2 Citations (Scopus)

The extension of α-d-1,3-branch linkages by 1,3-α-d-glucan synthase from Streptococcus sobrinus

Takehara, T., Ansai, T., Kunimori, A., Yamashita, Y. & Hanada, N., Sep 15 1991, In : FEMS microbiology letters. 83, 1, p. 69-71 3 p.

Research output: Contribution to journalArticle

Streptococcus sobrinus
Glucans
Glucosides
Water
Sucrose
1990
9 Citations (Scopus)

Characterization of the product of the gtfS gene of Streptococcus downei, a primer-independent enzyme synthesizing oligo-isomaltosaccharides

Russell, R. R. B., Gilpin, M. L., Hanada, N., Yamashita, Y., Shibata, Y. & Takehara, T., Jan 1 1990, In : Journal of General Microbiology. 136, 8, p. 1631-1637 7 p.

Research output: Contribution to journalArticle

Streptococcus
Streptococcus sobrinus
Glucans
Enzymes
Genes
48 Citations (Scopus)
Root Canal Irrigants
Tooth Apex
Dental Pulp Cavity
Equipment and Supplies
Constriction
3 Citations (Scopus)

Learning efficiency of a toothbrush for mastering scrubbing method.

Miyazaki, H., Kambe, M., Yamazaki, M., Yamaguchi, Y., Ansai, T., Ohtani, I., Shirahama, R., Yamashita, Y., Itoh-Andoh, M. & Takehara, T., Jan 1 1990, In : Clinical preventive dentistry. 12, 5, p. 19-21 3 p.

Research output: Contribution to journalArticle

Toothbrushing
Stroke
Learning
Efficiency
Dental Plaque
19 Citations (Scopus)

Purification and characterization of alkaline phosphatase of Bacteroides gingivalis 381

Yamashita, Y., Toyoshima, K., Yamazaki, M., Hanada, N. & Takehara, T., Jan 1 1990, In : Infection and Immunity. 58, 9, p. 2882-2887 6 p.

Research output: Contribution to journalArticle

Porphyromonas gingivalis
Alkaline Phosphatase
Enzymes
Ions
Periplasm
1989
1 Citation (Scopus)

Effect of magnesium ions on secretion of glucosyltransferase from Streptococcus sobrinus

Yamashita, Y. & Takehara, T., Dec 1 1989, In : Microbios. 60, 244-245, p. 177-182 6 p.

Research output: Contribution to journalArticle

Streptococcus sobrinus
Glucosyltransferases
Dental Caries
Streptococcus
Magnesium
12 Citations (Scopus)

Evidence for the presence of two distinct sites of sucrose hydrolysis and glucosyl transfer activities on 1,3-α-D-glucan synthase of Streptococcus mutans

Yamashita, Y., Hanada, N., Itoh-Andoh, M. & Takehara, T., Jan 30 1989, In : FEBS Letters. 243, 2, p. 343-346 4 p.

Research output: Contribution to journalArticle

Streptococcus mutans
Sucrose
Hydrolysis
Immune Sera
Enzymes
47 Citations (Scopus)

Periodontal disease prevalence in different age groups in Japan as assessed according to the CPITN

Miyazaki, H., Hanada, N., Andoh, M. I., Yamashita, Y., Saito, T., Sogame, A., Goto, K., Shirahama, R. & Takehara, T., Apr 1989, In : Community Dentistry and Oral Epidemiology. 17, 2, p. 71-74 4 p.

Research output: Contribution to journalArticle

Periodontal Index
Periodontal Diseases
Japan
Age Groups
Dental Calculus
17 Citations (Scopus)

Purification of a fourth glucosyltransferase from Streptococcus sobrinus

Yamashita, Y., Hanada, N. & Takehara, T., Jan 1 1989, In : Journal of bacteriology. 171, 11, p. 6265-6270 6 p.

Research output: Contribution to journalArticle

Streptococcus sobrinus
Glucosyltransferases
Water
Enzymes
Molecular Weight
1988
10 Citations (Scopus)

A novel glucosyltransferase from Streptococus mutans produces oligo-isomaltosaccharides

Yamashita, Y., Hanada, N. & Takehara, T., Jan 29 1988, In : Biochemical and Biophysical Research Communications. 150, 2, p. 687-693 7 p.

Research output: Contribution to journalArticle

1,4-alpha-Glucan Branching Enzyme
Glucosyltransferases
Streptococcus mutans
Enzymes
Dextrans

Immunological properties of the primer-independent glucosyltransferase of Streptococcus mutans serotypes d and g

Yamashita, Y., Shigeoka, T., Hanada, N. & Takehara, T., Jan 1 1988, In : Journal of General Microbiology. 134, 5, p. 1223-1227 5 p.

Research output: Contribution to journalArticle

Glucosyltransferases
Streptococcus mutans
Immune Sera
Enzymes
Immobilized Proteins
1987
51 Citations (Scopus)

Alkaline phosphatase in the periodontal ligament of the rabbit and macaque monkey

Yamashita, Y., Sato, M. & Noguchi, T., Jan 1 1987, In : Archives of Oral Biology. 32, 9, p. 677-678 2 p.

Research output: Contribution to journalArticle

Periodontal Ligament
Macaca
Haplorhini
Alkaline Phosphatase
Rabbits
15 Citations (Scopus)
Tissue Distribution
Liver
Isoenzymes
Alkaline Phosphatase
Tissue