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Journal of Periodontal Research

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https://www.readbyqxmd.com/read/28213930/antibiotic-administration-alleviates-the-aggravating-effect-of-orthodontic-force-on-ligature-induced-experimental-periodontitis-bone-loss-in-mice
#1
J Shi, Z Liu, T Kawai, Y Zhou, X Han
BACKGROUND AND OBJECTIVES: It is recognized that orthodontic force (OF) has an aggravating effect on the progression of destructive periodontitis if periodontitis have not been well controlled. However, the underlying mechanism is not completely clear. This study was to investigate the effect of antibiotic administration on OF-aggravated, ligature-induced experimental periodontitis in mice. MATERIAL AND METHODS: C57BL/6 mice (male, 8 wk old) were divided into three groups (n = 8)...
February 18, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28198555/involvement-of-cd147-in-alveolar-bone-remodeling-and-soft-tissue-degradation-in-experimental-periodontitis
#2
D Yang, R Liu, L Liu, H Liao, C Wang, Z Cao
BACKGROUND AND OBJECTIVE: The objective of this study was to investigate the possible roles of clusters of differentiation 147 (CD147) in bone resorption and mineralization through the bone markers of bone sialoprotein, osteocalcin, osteopontin and alkaline phosphatase (ALP), trabecular structure of alveolar bone and number of osteoclasts. We also investigated the effects of CD147 on inflammation and collagen breakdown. MATERIAL AND METHODS: Twenty-eight male Wistar rats were randomly divided into four groups of seven animals each: healthy group, periodontitis group, periodontitis + saline group and periodontitis + anti-CD147 groups...
February 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28198538/role-of-pin1-on-in-vivo-periodontal-tissue-and-in-vitro-cells
#3
K-H Park, E-H Cho, W-J Bae, H-S Kim, H-C Lim, Y-D Park, M-O Lee, E-S Cho, E-C Kim
BACKGROUND: Although expression of peptidyl-prolyl cis/trans isomerase NIMA-interacting 1 (PIN1) was reported in bone tissue, the precise role of PIN1 in periodontal tissue and cells remain unclear. MATERIAL & METHODS: To elucidate the roles of PIN1 in periodontal tissue, its expression in periodontal tissue and cells, and effects on in vitro 4 osteoblast differentiation and the underlying signaling mechanisms were evaluated. RESULTS: PIN1 was expressed in mouse periodontal tissues including periodontal ligament cells (PDLCs), cementoblasts and osteoblasts at the developing root formation stage (postnatal, PN14) and functional stage of tooth (PN28)...
February 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28177531/recruitment-of-bone-marrow-derived-cells-to-the-periodontal-ligament-via-the-stromal-cell-derived-factor-1-c-x-c-chemokine-receptor-type-4-axis
#4
M Kaku, M Kitami, J M Rosales Rocabado, T Ida, Y Akiba, K Uoshima
BACKGROUND/OBJECTIVES: The periodontal ligament (PDL) is a non-mineralized connective tissue that exists between the alveolar bone and root surface cementum and plays important roles in tooth function. The PDL harbors a remarkable reserve of multipotent stem cells, which maintain various types of cells. However, the sources of these stem cells, other than their developmental origin, are not well understood. MATERIAL AND METHODS: To elucidate the recruitment of bone marrow (BM)-derived stem cells in the PDL, green fluorescent protein (GFP)-expressing BM-derived cells were transplanted into the femoral BM of immunodeficient rats, and the distribution and expression of stem cell markers in the PDL were analyzed in vivo...
February 8, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28177135/unveiling-and-initial-characterization-of-neural-crest-like-cells-in-mesenchymal-populations-from-the-human-periodontal-ligament
#5
L Ramírez-García, R Cevallos, K Gazarian
OBJECTIVE: To identify cells with neural crest properties in mesenchymal populations isolated from human periodontal ligament. BACKGROUND: Evidence from tracing experiments on animal embryos revealed proof that dental tissues are among the homing sites of craniofacial neural crest migratory cells. In humans, similar migratory cells were found in early embryos, but whether these cells are progeny of oral multipotent stem cells needs to be confirmed. Searching for the cells with neural crest characteristics in periodontal ligament mesenchymal populations can lead to a solution to the problem...
February 8, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28177133/dietary-supplementation-with-low-dose-omega-3-fatty-acids-reduces-salivary-tumor-necrosis-factor-%C3%AE-levels-in-patients-with-chronic-periodontitis-a-randomized-controlled-clinical-study
#6
I Keskiner, I Saygun, V Bal, M Serdar, A Kantarci
BACKGROUND AND OBJECTIVE: Recent studies have demonstrated the beneficial effects of omega-3 polyunsaturated fatty acids (PUFAs) on physiological processes and on a variety of chronic inflammatory diseases, including periodontal diseases. In this study, we evaluated the impact of omega-3 PUFAs in conjunction with scaling and root planing (SRP) on salivary markers in patients with chronic periodontitis. MATERIAL AND METHODS: Thirty systemically healthy subjects with chronic periodontitis were enrolled and randomly allocated into two groups...
February 8, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28177132/in-vitro-evaluation-of-the-human-gingival-fibroblast-gingival-mesenchymal-stem-cell-dynamics-through-perforated-guided-tissue-membranes-cell-migration-proliferation-and-membrane-stiffness-assay
#7
A Y Gamal, N N Al-Berry, A A Hassan, L A Rashed, V J Iacono
BACKGROUND: Migration of gingival fibroblasts/gingival mesenchymal stem cells through macro-perforated barrier membranes may allow them to participate positively in periodontal regeneration. The optimal guided tissue membrane perforation diameter that could favor maximum cell migration into the defect area and at the same time act as an occlusive barrier for gingival epithelium and its associated gingival extracellular matrix component is not yet identified. MATERIAL AND METHODS: Cultured human gingival fibroblasts/gingival mesenchymal stem cells were placed in the upper chambers of 12-well collagen-coated polytetrafluoroethylene transwells, which were manually perforated with 0...
February 8, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28177125/association-of-oral-microbiome-with-type-2-diabetes-risk
#8
J Long, Q Cai, M Steinwandel, M K Hargreaves, S R Bordenstein, W J Blot, W Zheng, X O Shu
BACKGROUND AND OBJECTIVE: The oral microbiome may help to maintain systemic health, including how it affects blood glucose levels; however, direct evidence linking the oral microbiome with diabetes is lacking. MATERIAL AND METHODS: We compared the oral microbiome profiles of 98 participants with incident diabetes, 99 obese non-diabetics and 97 normal weight non-diabetics, via deep sequencing of the 16S rRNA gene. RESULTS: We found that the phylum Actinobacteria was present significantly less abundant among patients with diabetes than among the controls (p = 3...
February 8, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28177120/impact-of-periodontal-disease-on-quality-of-life-a-systematic-review
#9
REVIEW
M C Ferreira, A C Dias-Pereira, L S Branco-de-Almeida, C C Martins, S M Paiva
The diagnosis of periodontal disease is commonly based on objective evaluations of the patient's medical/dental history as well as clinical and radiographic examinations. However, periodontal disease should also be evaluated subjectively through measures that quantify its impact on oral health-related quality of life. The aim of this study was to evaluate the impact of periodontal disease on quality of life among adolescents, adults and older adults. A systematic search of the literature was performed for scientific articles published up to July 2015 using electronic databases and a manual search...
February 8, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28101931/list-of-reviewers
#10
(no author information available yet)
No abstract text is available yet for this article.
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27028150/periodontal-disease-and-percentage-of-calories-from-fat-using-national-data
#11
T Hamasaki, M Kitamura, Y Kawashita, Y Ando, T Saito
BACKGROUND AND OBJECTIVE: The association between periodontal disease and nutrient intake was examined using linked data from the 2005 National Health and Nutrition Survey, the Comprehensive Survey of Living Conditions and the Survey of Dental Diseases from the same year 'using linked data from the National Health and Nutrition Survey, the Comprehensive Survey of Living Conditions and the Survey of Dental Diseases, all from 2005'. There has been increasing focus on the importance of nutritional factors in disease in recent years, but very few studies in Japan have looked at the association between periodontal disease and nutrients...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27021598/human-periodontal-ligament-stem-cells-suppress-t-cell-proliferation-via-down-regulation-of-non-classical-major-histocompatibility-complex-like-glycoprotein-cd1b-on-dendritic-cells
#12
C Shin, M Kim, J-A Han, B Choi, D Hwang, Y Do, J-H Yun
BACKGROUND AND OBJECTIVE: Periodontal ligament stem cells (PDLSCs) from the periodontal ligament tissue were recently identified as mesenchymal stem cells (MSCs). The capabilities of PDLSCs in periodontal tissue or bone regeneration have been reported, but their immunomodulatory role in T-cell immune responses via dendritic cells (DCs), known as the most potent antigen-presenting cell, has not been studied. The aim of this study is to understand the immunological function of homogeneous human STRO-1(+) CD146(+) PDLSCs in DC-mediated T-cell immune responses to modulate the periodontal disease process...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27018040/relation-between-periodontal-disease-and-arterial-stiffness
#13
L N Nicolosi, P G Lewin, J J Rudzinski, M Pompeo, F Guanca, P Rodríguez, R J Gelpi, M C Rubio
BACKGROUND AND OBJECTIVE: Periodontal disease has been described as playing a role in the atherosclerosis process, and its relation with intimal thickness and vascular endothelial function (EF) has been investigated. The present study sought to determine whether there are differences in parameters of arterial stiffness and EF between patients with and without severe periodontal disease (SPD). MATERIAL AND METHODS: Patients referred to the School of Dentistry University of Buenos Aires, were assessed...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27016382/hypoxia-inducible-factor-1%C3%AE-inhibits-interleukin-6-and-8-production-in-gingival-epithelial-cells-during-hypoxia
#14
M Takedachi, M Iyama, K Sawada, K Mori, S Yamamoto, C Morimoto, M Yanagita, S Murakami
BACKGROUND AND OBJECTIVE: Hypoxia has been widely studied in inflammatory diseases as it can modulate the inflammatory response, mainly via the hypoxia-inducible factor (HIF). However, little is known about the effects of hypoxia and the role of HIF in the inflammatory responses to periodontitis. In this study, we focused on the gingival epithelium that is exposed to relatively low levels of oxygen. We investigated whether hypoxic conditions have an impact on inflammatory responses in human gingival epithelial cells (HGECs)...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27016267/high-levels-of-heavy-metal-accumulation-in-dental-calculus-of-smokers-a-pilot-inductively-coupled-plasma-mass-spectrometry-study
#15
E Yaprak, I Yolcubal, A Sinanoğlu, A Doğrul-Demiray, E Guzeldemir-Akcakanat, I Marakoğlu
BACKGROUND AND OBJECTIVE: Various trace elements, including toxic heavy metals, may exist in dental calculus. However, the effect of environmental factors on heavy metal composition of dental calculus is unknown. Smoking is a major environmental source for chronic toxic heavy metal exposition. The aim of this study is to compare toxic heavy metal accumulation levels in supragingival dental calculus of smokers and non-smokers. MATERIAL AND METHODS: A total of 29 supragingival dental calculus samples were obtained from non-smoker (n = 14) and smoker (n = 15) individuals...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27016120/decreased-expression-of-e-cadherin-by-porphyromonas-gingivalis-lipopolysaccharide-attenuates-epithelial-barrier-function
#16
M Abe-Yutori, T Chikazawa, K Shibasaki, S Murakami
BACKGROUND AND OBJECTIVE: The gingival epithelium is a first line of defense against bacterial challenge. E-cadherin (E-cad) plays an important role in cell-cell adhesion as a barrier in the epithelium. Recently, a decrease in the expression of E-cad has been observed in inflamed gingival tissue. The aims of this study were to clarify the changes in E-cad expression and barrier function in human gingival epithelial cells stimulated with Porphyromonas gingivalis-lipopolysaccharide (P. gingivalis-LPS) and to evaluate the influence of these changes on the inflammatory reaction...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27005943/role-of-indoleamine-2-3-dioxygenase-in-an-inflammatory-model-of-murine-gingiva
#17
X Qin, J Y Liu, T Wang, D H Pashley, A H Al-Hashim, R Abdelsayed, J C Yu, M S Mozaffari, B Baban
BACKGROUND AND OBJECTIVE: Indoleamine 2,3-dioxygenase (IDO) is one of the major pathways for metabolism of tryptophan in a variety of cells, including immune cells. Increasing evidence indicates that IDO is a critical player in establishing the balance between immunity and tolerance and ultimately in the maintenance of homeostasis. By inducing inflammation in gingival tissue, we tested the hypothesis that IDO is a pivotal player in regulating the immune and inflammatory responses of gingiva...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/26987886/titanium-ions-form-particles-that-activate-and-execute-interleukin-1%C3%AE-release-from-lipopolysaccharide-primed-macrophages
#18
M Pettersson, P Kelk, G N Belibasakis, D Bylund, M Molin Thorén, A Johansson
BACKGROUND AND OBJECTIVE: Peri-implantitis is a destructive inflammatory process characterized by destruction of the implant-supporting bone. Inflammasomes are large intracellular multiprotein complexes that play a central role in innate immunity by activating the release of proinflammatory cytokines. Although inflammasome activation has previously been linked to periodontal inflammation, there is still no information on a potential association with peri-implantitis. The aim of this study was to examine cytotoxic and proinflammatory effects, including inflammasome activation, of metals used in dental implants, in an in vitro model, as well as from clinical tissue samples...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/26971526/blockade-of-rage-in-zucker-obese-rats-with-experimental-periodontitis
#19
M B Grauballe, J A Østergaard, S Schou, A Flyvbjerg, P Holmstrup
BACKGROUND AND OBJECTIVE: Periodontitis and type 2 diabetes mellitus (T2D) are two interrelated chronic diseases. Periodontitis is more prevalent in patients with T2D than in healthy subjects, and studies indicate that periodontitis impacts the metabolic control of patients with T2D. Hyperglycemia in T2D leads to the formation of advanced glycation end-products (AGEs). Binding of AGEs to the receptor of AGE (RAGE) elicits an increased inflammatory response that may be a key modulator linking the two diseases...
February 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/26957413/inhibition-of-gingipains-and-porphyromonas-gingivalis-growth-and-biofilm-formation-by-prenyl-flavonoids
#20
T Kariu, R Nakao, T Ikeda, K Nakashima, J Potempa, T Imamura
BACKGROUND AND OBJECTIVE: Porphyromonas gingivalis is considered a major pathogen of chronic periodontitis, which also may be implicated with systemic diseases such as atherosclerosis. Secreted cysteine proteases, gingipains Rgp and Kgp, are essential for P. gingivalis virulence. Some polyphenols and flavonoids are known to inhibit gingipain activity and interfere with biofilm formation by P. gingivalis. Many bioactive compounds have been isolated from Epimedium species, but availability of these compounds on gingipains and P...
February 2017: Journal of Periodontal Research
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