Search

Your search keyword '"Akamine, Akifumi"' showing total 271 results
Start Over Author "Akamine, Akifumi"
271 results on '"Akamine, Akifumi"'

21. Construction and characterization of a nonpigmented mutant of Porphyromonas gingivalis: cell surface polysaccharide as an anchorage for gingipains

Author

Shoji, Mikio, Ratnayake, Dinath B., Yixin Shi, Kadowaki, Tomoko, Yamamoto, Kenji, Yoshimura, Fuminobu, Akamine, Akifumi, Curtis, Michael A., and Nakayama, Koji

Subjects
Microbiological research -- Analysis, Anaerobic bacteria -- Genetic aspects, Plasma membranes -- Genetic aspects, Gene mutations -- Physiological aspects, Polysaccharides -- Genetic aspects, DNA -- Genetic aspects, Mutagenesis -- Physiological aspects, Biological sciences
Abstract

Research has been conducted on Porphyromonas gingivalis nonpigmented mutant. The construction of this mutant has been carried out via the use of transposon mutagenesis and the results indicate that the mutant possesses transposon DNA at the porR gene involved in the cell surface polysaccharide biosynthesis.

Published
2002

38. An Epidemiologic Examination on the Prevalence of the Periodontal Diseases and Oral Pigmentation in Yusho Patients in 2002

Author

Hashiguchi, Isamu, Yoshimine, Yoshito, Gotou, Yasuharu, Maeda, Hidefumi, Wada, Naohisa, Akamine, Akifumi, Fukuyama, Hiroshi, and Okumura, Hidehiko

Subjects
stomatognathic diseases, Periodontal disease
Abstract

An epidemiologic examination was carried out to reveal the prevalence of the periodontal diseases and oral pigmentation in patients with Yusho. The results obtained were as follows. 1)95 patients out of 110 patients, who were examined periodontal pocket depth using Ramfjord' methods, had at least one tooth with periodontal pocket deeper than 3 mm. Similarly, 276 teeth out of a total 495 examined teeth showed periodontal pockets with more than 3 mm depth. However, the ratio of the teeth with periodontal pockets deeper than 4mm to total examined teeth in each age fell to less than 25%. 2)Oral pigmentation was observed in 75 patients out of 121 patien ts with Yusho. In this examination, gingival pigmentation was most predominant among oral pigmentation. It is of particular interest that severe pigmentation tended to be observed at a much higher frequency in younger patients with Yusho. Taken these findings into consid eration, it was suggested that PCBs and related compounds might play an important role in the development of both periodontal diseases and oral pigmentation., 油症患者における歯周疾患や口腔内色素沈着の罹患状況の経年的変化を把握するために, 平成14年度の福岡県油症一斉検診を受診した油症認定患者を対象に口腔内診査を行った. 1)深さ3mm以上の歯周ポケットを1歯でも有している患者は95名(86.4%)で, また3mm以上の歯周ポケットを有する歯牙は495の総被検歯のうち276歯(55.8%)といずれも高い割合を示した. 2)121名の油症認定患者のうち75名に口腔内色素沈着がみられた. 部位としては歯肉にみられるものがほとんどであった. 加齢と共に色素沈着の発現率は低下しており, 加えて色素沈着の程度も若年者に比べて高齢者の方が軽微であった. 以上の結果から, 油症患者においては辺縁性歯肉炎および口腔内色素沈着の罹患率が依然として高く, 機序については不明だがPCBsやその代謝産物がこれらの病変の発症や進展に関与していると考えられる.

Published
2003

39. Regeneration of the periodontium for preservation of the damaged tooth

Author

Maeda, Hidefumi, Tomokiyo, Atsushi, Wada, Naohisa, Koori, Katsuaki, Kawachi, Giichiro, and Akamine, Akifumi

Subjects
Biomaterials, stomatognathic diseases, stomatognathic system, 4-META-MMA-TBB, 5 - Ciencias puras y naturales::57 - Biología::576 - Biología celular y subcelular. Citología [CDU], Tooth preservation, Periodontal ligament
Abstract

The population of the world grows every year, and life expectancy tends to increase. Thus, longterm preservation of teeth in aged individuals is an urgent issue. The main causes of tooth loss are well known to be periodontitis, caries, fractures, and orthodontic conditions. Although implant placement is a widely accepted treatment for tooth loss, most patients desire to preserve their own teeth. Many clinicians and researchers are therefore challenged to treat and preserve teeth that are irreversibly affected by deep caries, periodontitis, fractures, and trauma. Tissue engineering techniques are beneficial in addressing this issue; stem cells, signal molecules, and scaffolds are the main elements of such techniques. In this review, we describe these three elements with respect to their validation for regeneration of the periodontium and focus particularly on the potency of diverse scaffolds. In addition, we provide a short overview of the ongoing studies of 4- methacryloxyethyl trimellitate anhydride/methyl methacrylate-tri-n-butyl-borane resin including calcium chloride or hydroxyapatite for periodontium regeneration.

Published
2014

41. Effect of CTGF/CCN2 on Osteo/Cementoblastic and Fibroblastic Differentiation of a Human Periodontal Ligament Stem/Progenitor Cell Line

Author

Yuda, Asuka, primary, Maeda, Hidefumi, additional, Fujii, Shinsuke, additional, Monnouchi, Satoshi, additional, Yamamoto, Naohide, additional, Wada, Naohisa, additional, Koori, Katsuaki, additional, Tomokiyo, Atsushi, additional, Hamano, Sayuri, additional, Hasegawa, Daigaku, additional, and Akamine, Akifumi, additional

Published
2014
Full Text
View/download PDF

44. Periodontal Ligament Stem Cells

Author

Maeda, Hidefumi, Wada, Naohisa, Fujii, Shinsuke, Tomokiyo, Atsushi, Akamine, Akifumi, Maeda, Hidefumi, Wada, Naohisa, Fujii, Shinsuke, Tomokiyo, Atsushi, and Akamine, Akifumi

Published
2011
Full Text
View/download PDF

47. A multipotent clonal human periodontal ligament cell line with neural crest cell phenotypes promotes neurocytic differentiation, migration, and survival

Author

Tomokiyo, Atsushi, primary, Maeda, Hidefumi, additional, Fujii, Shinsuke, additional, Monnouchi, Satoshi, additional, Wada, Naohisa, additional, Kono, Kiyomi, additional, Yamamoto, Naohide, additional, Koori, Katsuaki, additional, Teramatsu, Yoko, additional, and Akamine, Akifumi, additional

Published
2012
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results