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Journal of Periodontal Research

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https://www.readbyqxmd.com/read/27859260/inducible-expression-of-a-disintegrin-and-metalloproteinase-8-in-chronic-periodontitis-and-gingival-epithelial-cells
#1
W P P Aung, P Chotjumlong, S Pata, P Montreekachon, C Supanchart, S Khongkhunthian, T Sastraruji, S Krisanaprakornkit
BACKGROUND AND OBJECTIVES: The expression of A Disintegrin and Metalloproteinase 8 (ADAM8) is associated with several inflammatory diseases. Elevated ADAM8 levels have been shown in gingival crevicular fluid of patients with chronic periodontitis. The objective of this study was to investigate ADAM8 expression in chronic periodontitis tissues compared with that in normal tissues. ADAM8 expression and its inductive mechanism were examined in human gingival epithelial cells (HGECs) and human gingival fibroblasts...
November 17, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27859254/influence-of-experimental-periodontitis-on-cardiac-oxidative-stress-in-rats-a-biochemical-and-histomorphometric-study
#2
O Köse, T Arabacı, H Yemenoglu, S Ozkanlar, N Kurt, I Gumussoy, S Gedikli, A Kara
BACKGROUND AND OBJECTIVE: The role of oxidative stress in the process of cardiac remodeling, hypertrophy and heart failure is a current topic. The purpose of this experimental study was to investigate the influences of periodontitis on levels of cardiac oxidative stress. MATERIAL AND METHODS: Twenty rats were separated into two groups: control and experimental periodontitis (EP). Periodontitis was induced by placing a 3.0 silk suture in the cervix of the left and right mandibular first molar teeth for 5 wk...
November 17, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27859252/clinical-effects-of-probiotics-containing-bacillus-species-on-gingivitis-a-pilot-randomized-controlled-trial
#3
B Alkaya, I Laleman, S Keceli, O Ozcelik, M Cenk Haytac, W Teughels
BACKGROUND AND OBJECTIVE: Lactobacillus spp. and bifidobacteria are the most frequently used probiotics in oral health research. However, although probiotic effects have been suggested for other genera, such as bacilli, no trials are available to describe the effect of bacilli probiotics on gingivitis in humans. The aim of the present study was to evaluate the clinical effects of a bacilli-containing toothpaste, a mouthrinse and a toothbrush cleaner versus a placebo in patients with generalized gingivitis...
November 17, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27781272/gingival-crevicular-fluid-tissue-blood-vessel-type-plasminogen-activator-and-plasminogen-activator-inhibitor-2-levels-in-patients-with-rheumatoid-arthritis-effects-of-nonsurgical-periodontal-therapy
#4
Ş Kurgan, C Önder, N Balcı, Ö Fentoğlu, F Eser, M Balseven, M A Serdar, D N Tatakis, M Günhan
BACKGROUND AND OBJECTIVE: The aim of this study was to evaluate the effect of nonsurgical periodontal therapy on clinical parameters and gingival crevicular fluid levels of tissue/blood vessel-type plasminogen activator (t-PA) and plasminogen activator inhibitor-2 (PAI-2) in patients with periodontitis, with or without rheumatoid arthritis (RA). MATERIAL AND METHODS: Fifteen patients with RA and chronic periodontitis (RA-P), 15 systemically healthy patients with chronic periodontitis (H-P) and 15 periodontally and systemically healthy volunteers (C) were included in the study...
October 26, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27763659/transgenic-expression-of-ephrinb2-in-periodontal-ligament-stem-cells-pdlscs-modulates-osteogenic-differentiation-via-signaling-crosstalk-between-ephrinb2-and-ephb4-in-pdlscs-and-between-pdlscs-and-pre-osteoblasts-within-co-culture
#5
S Y Zhu, P L Wang, C S Liao, Y Q Yang, C Y Yuan, S Wang, W L Dissanayaka, B C Heng, C F Zhang
BACKGROUND AND OBJECTIVE: The goal of periodontal therapy is to regenerate/reconstruct the damaged supporting tissues of diseased teeth and to facilitate recovery of their physiological functions. Combination of stem cell transplantation and gene therapy offers a viable method for accelerating periodontal repair and regeneration. In this study, the role of the ephrinB2/EphB4 signaling pathway in regulating osteogenic differentiation of periodontal ligament stem cells (PDLSCs) and crosstalk between PDLSCs and pre-osteoblasts within co-culture was investigated through ephrinB2 transgenic expression in PDLSCs...
October 20, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27734498/association-of-peripheral-arterial-disease-with-periodontal-disease-analysis-of-inflammatory-cytokines-and-an-acute-phase-protein-in-gingival-crevicular-fluid-and-serum
#6
M Unlu Çalapkorur, B A Alkan, Z Tasdemir, Y Akcali, E Saatçi
BACKGROUND AND OBJECTIVE: Inflammation is a common feature of both peripheral arterial disease (PAD) and periodontal disease. The aim of this study was to evaluate the relationship between PAD and periodontal disease by examining the levels of inflammatory cytokines (pentraxin 3 and interleukin 1β) and high sensitive C-reactive protein from gingival crevicular fluid and serum. MATERIAL AND METHODS: A total of 60 patients were included in this cross-sectional study...
October 13, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27663905/matrix-metalloproteinase-8-activity-in-gingival-crevicular-fluid-development-of-a-novel-assay
#7
M T C Mc Crudden, C R Irwin, I El Karim, G J Linden, F T Lundy
BACKGROUND AND OBJECTIVE: The matrix metalloproteinases (MMPs) play a role in regulating turnover and metabolism of connective tissues in health but they have also been implicated in a wide variety of pathological conditions, including periodontal disease. MMP-8 has been extensively studied in periodontal health and disease using ELISA, although this technique is limited by its inability to determine enzyme activity. The aim was to develop an assay specifically to measure MMP-8 activity and to demonstrate its use in the analysis of gingival crevicular fluid samples...
September 24, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27663744/periodontal-manifestations-of-inflammatory-bowel-disease-emerging-epidemiologic-and-biologic-evidence
#8
K Agossa, A Dendooven, L Dubuquoy, C Gower-Rousseau, E Delcourt-Debruyne, M Capron
Inflammatory bowel disease and periodontitis are both described as a disproportionate mucosal inflammatory response to a microbial environment in susceptible patients. Moreover, these two conditions share major environmental and lifestyle-related risk factors. Despite this intriguing pathogenic parallel, large-scale studies and basic research have only recently considered periodontal outcomes as relevant data. There are mounting and consistent arguments, from recent epidemiologic studies and animal models, that these two conditions might be related...
September 24, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27663623/interleukin-12-modulates-the-immunomodulatory-properties-of-human-periodontal-ligament-cells
#9
B Issaranggun Na Ayuthaya, P Satravaha, P Pavasant
BACKGROUND AND OBJECTIVE: The cytokine interleukin 12 (IL-12) has been implicated as a potent stimulator of tissue degradation in the pathogenesis of several inflammatory diseases, including periodontitis. In patients with periodontitis, an increased level of IL-12 is found in serum and gingival crevicular fluid. As inflammatory cytokines have been demonstrated to induce activation of the immunomodulatory properties of mesenchymal stem cells (MSCs), this study aimed to investigate the influence of IL-12 on these properties in human periodontal ligament (hPDL) cells...
September 24, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27663487/in-vitro-complement-activation-adherence-to-red-blood-cells-and-induction-of-mononuclear-cell-cytokine-production-by-four-strains-of-aggregatibacter-actinomycetemcomitans-with-different-fimbriation-and-expression-of-leukotoxin
#10
C Damgaard, J Reinholdt, Y Palarasah, C Enevold, C Nielsen, M K Brimnes, P Holmstrup, C H Nielsen
BACKGROUND AND OBJECTIVE: The periodontal pathogen Aggregatibacter actinomycetemcomitans has been proposed as pro-atherogenic, and complement-mediated adherence to red blood cells (RBCs) may facilitate its systemic spread. We investigated the ability of four strains of A. actinomycetemcomitans with differential expression of leukotoxin A (LtxA) and fimbriae to activate complement, adhere to RBCs and elicit cytokine responses by mononuclear cells (MNCs). MATERIAL AND METHODS: Aggregatibacter actinomycetemcomitans serotype b strains HK 921, HK 1651, HK 2092 and HK 2108 were fluorescence-labeled, incubated with human whole blood cells in the presence of autologous serum, and assessed for RBC adherence by flow cytometry and for capacity to induce cytokine production by cytometric bead array analysis...
September 24, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27624657/mannose-binding-lectin-gene-polymorphism-in-relation-to-periodontal-infection
#11
A Liukkonen, Q He, U K Gürsoy, P J Pussinen, K Gröndahl-Yli-Hannuksela, J Liukkonen, T Sorsa, A L Suominen, S Huumonen, E Könönen
BACKGROUND AND OBJECTIVE: Mannose-binding lectin (MBL) plays an important role in innate immunity. MBL deficiency is usually caused by mutations in exon 1 of the MBL structural gene (MBL2). Our aim was to investigate MBL2 polymorphisms and their relation to salivary levels of periodontal inflammatory/tissue destruction markers and two major periodontitis-associated bacteria. MATERIAL AND METHODS: Salivary samples from 222 subjects were available for genotyping by pyrosequencing...
September 14, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27624412/increased-expression-of-triggering-receptor-expressed-on-myeloid-cells-1-and-2-in-inflamed-human-gingiva
#12
S S Chen, K Wang, J Zhao, W C Wu, Y F Wu, L Zhao
BACKGROUND AND OBJECTIVE: Periodontitis is an infectious disease in which the host immune and inflammatory responses play essential roles in resistance to bacterial infection, as well as the induction of tissue destruction if the immune response is dysregulated. The triggering receptor expressed on myeloid cells (TREMs) modulates inflammatory and innate immune signaling. TREM-1 is considered as an amplifier of the immune response, while TREM-2 is a negative regulator that has yet to be explored in periodontal disease before...
September 14, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27624089/in-vivo-electrical-application-on-titanium-implants-stimulating-bone-formation
#13
L M Bins-Ely, E B Cordero, J C M Souza, W Teughels, C A M Benfatti, R S Magini
BACKGROUND AND OBJECTIVE: The aim of the present in vivo study was to measure the bone implant contact area after electrical stimulation of dental implants. MATERIAL AND METHODS: Ninety titanium dental implants (6 mm × 11.5 mm) with a smooth surface were placed in six male Beagle dogs and then the implant-bone interfaces was assessed by histological analyses after 7 and 15 d. The 12-mo-old dogs, with a weight of 15 kg, were randomly divided into two groups based on the duration of bone healing: 7 and 15 d...
September 14, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27624546/combined-effects-of-starvation-and-butyrate-on-autophagy-dependent-gingival-epithelial-cell-death
#14
M Evans, T Murofushi, H Tsuda, Y Mikami, N Zhao, K Ochiai, T Kurita-Ochiai, M Yamamoto, K Otsuka, N Suzuki
BACKGROUND AND OBJECTIVE: Bacteria in the dental biofilm surrounding marginal gingival grooves cause periodontal diseases. Numerous bacteria within the biofilm consume nutrients from the gingival crevicular fluid. Furthermore, some gram-negative bacteria in mature dental biofilms produce butyrate. Thus, gingival epithelial cells in close proximity to mature dental biofilms are at risk of both starvation and exposure to butyrate. In the present study, we determined the combined effects of starvation and butyrate exposure on gingival epithelial cell death and the underlying mechanisms...
September 13, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27624290/implant-osseointegration-in-irradiated-bone-an-experimental-study
#15
R P Ocaña, G D Rabelo, L M Sassi, V P Rodrigues, F A Alves
BACKGROUND AND OBJECTIVES: The aim of this study was to evaluate the effect of radiotherapy on the osseointegration of dental implants in the tibia and the action of platelet-rich plasma (PRP) as an adjuvant therapy. MATERIAL AND METHODS: A total of 18 rabbits received two implants in each tibial epiphysis, totalizing 72 implants. The control group (group I) was composed by six rabbits and did not receive radiotherapy. The test groups (II and III) received a single dose of 1727 cGy...
September 13, 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/27870141/periodontal-tissue-engineering-by-nano-beta-tricalcium-phosphate-scaffold-and-fibroblast-growth-factor-2-in-one-wall-infrabony-defects-of-dogs
#16
K Ogawa, H Miyaji, A Kato, Y Kosen, T Momose, T Yoshida, E Nishida, S Miyata, S Murakami, H Takita, B Fugetsu, T Sugaya, M Kawanami
BACKGROUND AND OBJECTIVE: Nanoparticle bioceramics are being investigated for biomedical applications. We fabricated a regenerative scaffold comprising type I collagen and beta-tricalcium phosphate (β-TCP) nanoparticles. Fibroblast growth factor-2 (FGF-2) is a bioeffective signaling molecule that stimulates cell proliferation and wound healing. This study examined the effects, on bioactivity, of a nano-β-TCP/collagen scaffold loaded with FGF-2, particularly on periodontal tissue wound healing...
December 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/26936228/impact-of-smoking-on-experimental-gingivitis-a-clinical-microbiological-and-immunological-prospective-study
#17
D C Peruzzo, J H Gimenes, T Taiete, R C V Casarin, M Feres, E A Sallum, M Z Casati, K R Kantovitz, F H Nociti
OBJECTIVE: The present study assessed the effect of smoking on clinical, microbiological and immunological parameters in an experimental gingivitis model. MATERIAL AND METHODS: Twenty-four healthy dental students were divided into two groups: smokers (n = 10); and nonsmokers (n = 14). Stents were used to prevent biofilm removal during brushing. Visible plaque index (VPI) and gingival bleeding index (GBI) were determined 5- on day -7 (running phase), baseline, 21 d (experimental gingivitis) and 28 d (resolution phase)...
December 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/26913689/an-overview-of-systematic-reviews-on-the-effectiveness-of-periodontal-treatment-to-improve-glycaemic-control
#18
REVIEW
C M Faggion, M P Cullinan, M Atieh
Several systematic reviews with meta-analyses on the effectiveness of periodontal treatment to improve glycaemic control have been published. So far no overview of these systematic reviews has been performed. The main objective of this report was to assess critically these systematic reviews to provide the reader with a high-level synthesis of research evidence. MEDLINE (via PubMed) and EMBASE databases were searched independently and in duplicate to identify systematic reviews with meta-analyses of clinical studies that assessed the relationship between diabetes mellitus and periodontitis...
December 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/26847600/methylglyoxal-and-methylglyoxal-modified-collagen-as-inducers-of-cellular-injury-in-gingival-connective-tissue-cells
#19
I N Retamal, R Hernández, C González-Rivas, M Cáceres, R Arancibia, A Romero, C Martínez, N Tobar, J Martínez, P C Smith
BACKGROUND AND OBJECTIVES: Methylglyoxal is a toxic product derived from glucose metabolism that plays a role in inflammation, diabetes and aging. In addition, the periodontal pathogen Tannerella forsythensis may also generate this compound. However, the effects of methylglyoxal on gingival cells are still poorly understood. In the present study, we have explored whether methylglyoxal or methylglyoxal-treated collagen may modulate cell viability, death and proliferation in gingival connective tissue cells...
December 2016: Journal of Periodontal Research
https://www.readbyqxmd.com/read/26833268/redefining-the-induction-of-periodontal-tissue-regeneration-in-primates-by-the-osteogenic-proteins-of-the-transforming-growth-factor-%C3%AE-supergene-family
#20
REVIEW
U Ripamonti
The molecular bases of periodontal tissue induction and regeneration are the osteogenic proteins of the transforming growth factor-β (TGF-β) supergene family. These morphogens act as soluble mediators for the induction of tissues morphogenesis sculpting the multicellular mineralized structures of the periodontal tissues with functionally oriented ligament fibers into newly formed cementum. Human TGF-β3 (hTGF-β3 ) in growth factor-reduced Matrigel(®) matrix induces cementogenesis when implanted in class II mandibular furcation defects surgically prepared in the non-human primate Chacma baboon, Papio ursinus...
December 2016: Journal of Periodontal Research
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