Abstract:
OBJECTIVE:Streptococcus mutans, known to be a major pathogen of dental caries, is also considered to cause infective endocarditis. Its 120-kDa Cnm protein binds to type I collagen, which may be a potential virulence factor. In this study, we characterized S. mutans clinical strains focusing on the cnm gene encoding Cnm. DESIGN:A total of 528 S. mutans strains isolated from Japanese, Finnish, and Thai subjects were investigated. Using molecular techniques, the distribution frequency of cnm-positive strains and location of the inserted cnm were analyzed. Furthermore, isogenic mutant strains were constructed by inactivation of the cnm gene, then their biological properties of collagen-binding and glucan-binding were evaluated. Southern hybridization of the genes encoding glucan-binding proteins was also performed. RESULTS:The distribution frequency of cnm-positive strains from Thai subjects was 12%, similar to that previously reported for Japanese and Finnish subjects. Furthermore, the location of insertion of cnm was the same in all cnm-positive clinical isolates. As for the cnm-inactivated mutant strains constructed from 28 clinical isolates, their collagen-binding activity was negligible. In addition, glucan-binding activity in the cnm-positive clinical isolates was significantly reduced and corresponded to a lack of gbpA encoding glucan-binding protein A. CONCLUSIONS:Our results indicate that strains with cnm genes, the most crucial factor for the collagen-binding property of S. mutans, are detectable at similar frequencies over several different geographic locations. In addition, the common properties of these strains are a high level of collagen-binding activity and tendency for a low level of glucan-binding activity.
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Nakano K,Nomura R,Taniguchi N,Lapirattanakul J,Kojima A,Naka S,Senawongse P,Srisatjaluk R,Grönroos L,Alaluusua S,Matsumoto M,Ooshima Tdoi
10.1016/j.archoralbio.2009.11.008subject
Has Abstractpub_date
2010-01-01 00:00:00pages
34-9issue
1eissn
0003-9969issn
1879-1506pii
S0003-9969(09)00297-0journal_volume
55pub_type
杂志文章abstract::Five well-characterized foods were used to compare two systems for estimating the cariogenic potential of food: human plaque-acidity using interdental metallic touch electrodes, and cariogenicity testing in rats. Both systems identified the same food as the least cariogenic or acidogenic food and identified the same t...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(85)90089-5
更新日期:1985-01-01 00:00:00
abstract::The influence of indigenous Streptococcus mutans on naturally-occurring levels of IgA antibodies was studied in 42 lactating females. Breast milk, parotid and whole-saliva samples were collected and analysed by the ELISA method for IgA antibodies, reacting with antigens from Strep. mutans. All salivas and breast milk ...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(87)90149-x
更新日期:1987-01-01 00:00:00
abstract::The aim was to establish defined-species consortium plaque biofilms to investigate enamel and root caries in an artificial mouth. Strains of the putative enamel and root caries pathogens, Streptococcus mutans, Strep. sobrinus, Actinomyces naeslundii and Lactobacillus rhamnosus, were screened in batch culture for poten...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(99)00111-9
更新日期:2000-01-01 00:00:00
abstract:OBJECTIVE:To study and compare the relationships between mean chewing cycle duration, selected cephalometric variables representing mandibular length, face height, etc., measured in women and in their teenage or young-adult biological daughters. DESIGN:Daughters were recruited from local high schools and the Universit...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2015.08.004
更新日期:2015-11-01 00:00:00
abstract:OBJECTIVE:This study aimed to evaluate the anti-caries effect of a fluoridated milk-based drink on a root caries model by assessing mineral loss and both biofilm microbial viability and acidogenicity under increasing concentrations of fluoride supplementation. DESIGN:Streptococcus mutans UA159 biofilms were grown on r...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2020.104878
更新日期:2020-10-01 00:00:00
abstract:OBJECTIVE:MicroRNAs (miRNAs) are recognised as important regulators of a variety of fundamental biologic processes. Our study was undertaken to examine the role of MicroRNA-203 (miR-203) in modulating nitric oxide (NO) expression in female Sprague-Dawley rat mandibular condylar chondrocytes (MCCs) via targeting transie...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2012.08.013
更新日期:2013-02-01 00:00:00
abstract::Candidal adherence to mucosal surfaces is considered as the first step in the pathogenesis of oral candidiasis. We examined the effect of antifungal polyenes, amphotericin B, nystatin and natamycin, at sublethal and minimum inhibitory concentrations (MICs) on the adherence of Candida albicans and Candida glabrata to H...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(03)00174-2
更新日期:2003-12-01 00:00:00
abstract:OBJECTIVE:A loss of functional salivary glands often occurs after radiotherapy for head and neck tumour, and causes many problems in oral health. Recently, the use of salispheres, which consist of salivary gland stem cells (SGSCs), has been suggested as therapy for these problems. However, an insufficient number of cel...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2015.03.003
更新日期:2015-06-01 00:00:00
abstract::This study was undertaken to reveal detailed changes in fluoride distribution at different developmental stages of upper incisor enamel under various fluoride administration regimes. Four groups of Wistar rats received water containing 0, 25, 50 and 100 parts/10(6) fluoride respectively for 10 weeks. Five different en...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(88)90119-7
更新日期:1988-01-01 00:00:00
abstract:INTRODUCTION:Covalently bound functional GAGs orchestrate tissue mechanics through time-dependent characteristics. OBJECTIVE:The role of specific glycosaminoglycans (GAGs) at the ligament-cementum and cementum-dentin interfaces within a human periodontal complex were examined. Matrix swelling and resistance to compres...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2015.11.021
更新日期:2016-03-01 00:00:00
abstract::Counts of cultivable Porphyromonas gingivalis, assays of microbial proteases and the concentration in gingival crevicular fluid of proteoglycan metabolites were investigated at periodontitis and gingivitis sites in 16 patients with chronic adult periodontitis before and after treatment. Two periodontitis sites and two...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(96)00103-3
更新日期:1997-01-01 00:00:00
abstract::The aim was to examine the nature of enamel dissolution in aqueous suspensions with a high solid/solution ratio and in a CO2-rich atmosphere. Before experimentation, a water-saturated mixture of 95% N2-5% CO2 was passed through the acid solutions for 24 hr. Samples of 2 g of powdered enamel were suspended in 7 ml of e...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(97)00043-5
更新日期:1997-09-01 00:00:00
abstract:BACKGROUND:Sophora flavescens AITON (Leguminosae) is a typical traditional Korean medical herb considered to exhibit antibacterial, anti-inflammatory, and antipyretic effects, and is also used for the treatment of skin and mucosal ulcers, sores, diarrhea, gastrointestinal hemorrhage, arrhythmia, and eczema. OBJECTIVE ...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2016.04.001
更新日期:2016-08-01 00:00:00
abstract:OBJECTIVES:The aim of the present study was to identify the anticancer effects and the mechanisms of action of shikonin and its analogue isobutyrylshikonin in oral squamous carcinoma cells. DESIGNS:The cytotoxic effects of isobutyrylshikonin and shikonin in Ca9-22 and SCC-25 cells were analyzed using 3-(4,5-dimethylth...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2020.104774
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVE:We studied the relationship between chewing rhythmicity, craniomandibular morphology, and age in humans. DESIGN:Sixty subjects (10M:10F/group×three age groups, viz., 4-8, 10-14, and 17-21 years) participated. Subjects chewed gum for 2min while jaw movements in the frontal plane were videorecorded. Mean and v...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2014.04.011
更新日期:2014-07-01 00:00:00
abstract:OBJECTIVE:To investigate the effects of mechano-growth factor E (MGF-E) peptide derived from an IGF-1 isoform on the differentiation and mineralization of osteoblasts. METHODS:MGF-E peptide corresponding to the carboxy terminal 24 amino acid peptide of human MGF was synthesized. MGF-E (1 nM) peptide was then used to t...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2011.11.016
更新日期:2012-06-01 00:00:00
abstract:OBJECTIVE:The aim of the study was to evaluate the effects of the combined use of dentin matrix protein-1 (DMP1) gene-modified bone marrow stromal cells (BMSCs) and Bio-Oss(®) for maxillary sinus floor augmentation (MSFA) implant placement in dogs. MATERIALS AND METHODS:BMSCs were derived from bone marrow of six beagl...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2016.01.004
更新日期:2016-04-01 00:00:00
abstract::Twenty-five premolars (from Nagoya, Japan < 0.1 parts/10(-6)F in drinking water) were sampled to determine the fluoride content in imbrication lines of Retzius between the grooves and ridges of perikymata on the enamel surface. Eight small windows were formed on each surface in groove and ridge regions using an etched...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(98)00059-4
更新日期:1998-09-01 00:00:00
abstract::Physiological evidence is presented for the existence of commissural fibres that cross the midsagittal plane in the medulla of the rat at the level of the trigeminal motor nucleus (Mo5). These fibres, which have their origin in the Mo5, terminated in the contralateral Mo5. Small inhibitory postsynaptic potentials were...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(93)90170-q
更新日期:1993-12-01 00:00:00
abstract:OBJECTIVES:A resin infiltrant was employed for the treatment of active white spot lesions due to its ability to penetrate into the enamel pores and prevent the progression of the lesion. However, limited information is available about its mechanical effect on different artificial enamel lesions as well as on its resist...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2018.07.011
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVE:Receptor activator of nuclear factor-κB (RANK), RANK ligand (RANKL) and osteoprotegerin (OPG) are members of the superfamily of ligands and receptors of tumour necrosis factor family involved in bone metabolism. The formation, differentiation and activity of osteoclasts are regulated by these proteins. To cla...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2011.05.009
更新日期:2011-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to compare tooth components (enamel and dentin) in Familial Dysautonomia (FD) and Down syndrome (DS) in order to assess the extent to which each was affected. DESIGN:The design was cross-sectional. The sample consisted of 20 FD patients and 45 DS patients. The control group comp...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2004.02.008
更新日期:2004-08-01 00:00:00
abstract::Macrophage inflammatory protein-3alpha (MIP-3alpha or CCL20) is an intriguing molecule in cancer immunotherapy, but MIP-3alpha expression and signalling are not well understood in oral cancer cells. We investigated CCL20 expression and signal transduction by treating immortalized human oral keratinocyte (IHOK) and ora...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2008.01.015
更新日期:2008-09-01 00:00:00
abstract::The functioning lower jaw is a prerequisite of the ongoing secondary chondrogenesis in the mammalian mandibular condyle. Does the articular function also initiate secondary chondrogenesis in the mandible? The angular process of the fetal mammalian mandible possesses a large secondary cartilage without any apparent art...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(93)90154-e
更新日期:1993-01-01 00:00:00
abstract:BACKGROUND:Interleukin-6 (IL-6) is a potent stimulator of osteoclastic bone resorption. Osteoblast secretion of IL-6 plays an important role in the regulation of bone metabolism. Angiotensin II (Ang II) has been shown to regulate the expression of potent inflammatory factors, including MCP-1 and IL-6, by stimulating en...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2010.09.016
更新日期:2011-03-01 00:00:00
abstract::The histochemical muscle-fibre composition of the anterior and posterior belly of the human digastric muscle was analysed in young male adults. Both bellies, of differing embryological origin and supplied by different cranial nerves, showed a fibre composition similar to that of normal limb and trunk muscles. Type I, ...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(82)90054-1
更新日期:1982-01-01 00:00:00
abstract:OBJECTIVE: Considering the higher rate of oral cancer, and reduction in salivary antioxidants in smokers as indicated in previous studies, antioxidant- containing nutrients such as green tea, seem to be beneficial in counteracting against oxidative stress in this group. This study assessed the salivary total antioxidan...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2017.02.002
更新日期:2017-06-01 00:00:00
abstract:BACKGROUND AND OBJECTIVE:Epithelial-mesenchymal transition (EMT) has been proved to occur in drug-induced gingival overgrowth. However, the specific pathogenic mechanism remains uncertain. The aim of this study is to examine the expression of EMT markers in cyclosporine A (CsA)-induced gingival overgrowth in rat models...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2017.04.024
更新日期:2017-09-01 00:00:00
abstract:OBJECTIVE:We have applied fluorimetric method to monitor aldehyde dehydrogenase (ALDH*) activity in human saliva samples to study inactivation, reactivation and inhibition of the enzyme. DESIGN:Saliva samples were collected to buffer stock solution, containing various thiols, and assayed in the presence of the fluorog...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2007.11.004
更新日期:2008-05-01 00:00:00
abstract::In the hard palate, sagittally oriented capillary loops, 8-10 microns in diameter and 70-250 microns high, extended perpendicularly from a subcapillary plexus to the connective tissue papillae. These loops formed a well-delineated vascular spine beneath the rugal crests. Capillary loop density was estimated to be 200-...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(91)90088-c
更新日期:1991-01-01 00:00:00