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Journal of Periodontal Research

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https://www.readbyqxmd.com/read/29344966/quorum-sensing-molecule-dihydroxy-2-3-pentanedione-and-its-analogs-as-regulators-of-epithelial-integrity
#1
S Elmanfi, X Ma, H O Sintim, E Könönen, S Syrjänen, U K Gursoy
BACKGROUND AND OBJECTIVE: Quorum-sensing molecules regulate the behavior of bacteria within biofilms and at the same time elicit an immune response in host tissues. Our aim was to investigate the regulatory role of dihydroxy-2,3-pentanedione (DPD), the precursor of universal autoinducer-2 (AI-2), and its analogs (ethyl-DPD, butyl-DPD and isobutyl-DPD) in the integrity of gingival epithelial cells. MATERIAL AND METHODS: Human gingival keratinocytes were incubated with four concentrations (10 μmol L-1 , 1 μmol L-1 , 100 nmol L-1 and 10 nmol L-1 ) of DPD and its analogs for 24 hours...
January 17, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29341140/lipoprotein-modifications-by-gingipains-of-porphyromonas-gingivalis
#2
J Lönn, S Ljunggren, K Klarström-Engström, I Demirel, T Bengtsson, H Karlsson
BACKGROUND AND OBJECTIVE: Several studies have shown an association between periodontitis and cardiovascular disease (CVD). Atherosclerosis is the major cause of CVD, and a key event in the development of atherosclerosis is accumulation of lipoproteins within the arterial wall. Bacteria are the primary etiologic agents in periodontitis and Porphyromonas gingivalis is the major pathogen in the disease. Several studies support a role of modified low-density lipoprotein (LDL) in atherogenesis; however, the pathogenic stimuli that induce the changes and the mechanisms by which this occur are unknown...
January 17, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29315565/the-role-of-extracellular-matrix-metalloproteinase-inducer-glycosylation-in-regulating-matrix-metalloproteinases-in-periodontitis
#3
Z Zhang, X Yang, H Zhang, X Liu, S Pan, C Li
BACKGROUND AND OBJECTIVE: Extracellular matrix metalloproteinase inducer (EMMPRIN) is a transmembrane glycoprotein that may induce activation of matrix metalloproteinases (MMPs) and lead to the destruction of periodontal tissue. The level of EMMPRIN glycosylation might be involved in this process. This study aims to investigate the role of EMMPRIN glycosylation in regulating MMP-2 and MMP-9 during the progression of periodontitis. MATERIAL AND METHODS: Gingival tissues were collected from patients with chronic periodontitis and from patients undergoing crown-lengthening procedures (healthy gingival tissue)...
January 5, 2018: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29280135/feasibility-of-the-salivary-transcriptome-as-a-novel-biomarker-in-determining-disease-susceptibility
#4
M F H Hidayat, T Milne, M P Cullinan, G J Seymour
BACKGROUND AND OBJECTIVE: The salivary transcriptome may present as a readily available and non-invasive source of potential biomarkers. The development of chronic periodontitis is determined by individual patient susceptibility; hence, the aim of this study was to determine the potential of the salivary transcriptome as a biomarker of disease susceptibility using chronic periodontitis as an example. MATERIAL AND METHODS: Using an Oragene® RNA kit, the total RNA was purified from the saliva of 10 patients with chronic periodontitis and 10 patients without chronic periodontitis...
December 27, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29226321/the-severity-of-periodontitis-and-metabolic-syndrome-in-korean-population-the-dong-gu-study
#5
O S Kim, M H Shin, S S Kweon, Y H Lee, O J Kim, Y J Kim, H J Chung
OBJECTIVES: We assessed the association between periodontal disease status and metabolic syndrome (MetS) and its individual components in Korean adults over 50 years old. MATERIAL AND METHODS: In the Dong-gu study, 5078 men and women aged over 50 years were included. They underwent a questionnaire survey, physical assessment, biochemical assessment and periodontal assessment. The percentages of sites with periodontal probing depth ≥4 mm, and clinical attachment loss ≥4 mm were recorded for each participant...
December 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29211309/statins-in-nonsurgical-and-surgical-periodontal-therapy-a-systematic-review-and-meta-analysis-of-preclinical-in-vivo-trials
#6
REVIEW
K Bertl, I Steiner, N Pandis, K Buhlin, B Klinge, A Stavropoulos
The cholesterol-lowering drugs, statins, possess anti-inflammatory, antimicrobial and pro-osteogenic properties, and thus have been tested as an adjunct to periodontal treatment. The present systematic review aimed to answer the following focused research question: What is the effect of local and/or systemic statin use on periodontal tissues in preclinical in vivo studies of experimentally induced periodontitis (EIP) and/or acute/chronified periodontal defect (ACP) models? A literature search (of Medline/PubMed, Embase/Ovid, CENTRAL/Ovid) using the following main eligibility criteria was performed: (i) English or German language; (ii) controlled preclinical in vivo trials; (iii) local and/or systemic statin use in EIP and/or ACP models; and (iv) quantitative evaluation of periodontal tissues (i...
December 6, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29193068/advanced-glycation-end-products-increase-il-6-and-icam-1-expression-via-rage-mapk-and-nf-%C3%AE%C2%BAb-pathways-in-human-gingival-fibroblasts
#7
K Nonaka, Y Kajiura, M Bando, E Sakamoto, Y Inagaki, J H Lew, K Naruishi, T Ikuta, K Yoshida, T Kobayashi, H Yoshie, T Nagata, J Kido
BACKGROUND AND OBJECTIVES: Diabetes mellitus (DM) is a risk factor for periodontal diseases and may exacerbate the progression of the pathogenesis of periodontitis. Advanced glycation end-products (AGEs) cause DM complications relative to levels of glycemic control and larger amounts accumulate in the periodontal tissues of patients with periodontitis and DM. In the present study, we investigated the effects of AGEs on the expression of inflammation-related factors in human gingival fibroblasts (HGFs) to elucidate the impact of AGEs on DM-associated periodontitis...
November 30, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29159877/crystalline-structure-of-pulverized-dental-calculus-induces-cell-death-in-oral-epithelial-cells
#8
S M Ziauddin, A Yoshimura, J L Montenegro Raudales, Y Ozaki, K Higuchi, T Ukai, T Kaneko, T Miyazaki, E Latz, Y Hara
BACKGROUND AND OBJECTIVE: Dental calculus is a mineralized deposit attached to the tooth surface. We have shown that cellular uptake of dental calculus triggers nucleotide-binding oligomerization domain-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome activation, leading to the processing of the interleukin-1β precursor into its mature form in mouse and human phagocytes. The activation of the NLRP3 inflammasome also induced a lytic form of programmed cell death, pyroptosis, in these cells...
November 20, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29159808/association-between-height-and-periodontitis-in-korean-adults-results-from-knhanes-iv-and-v
#9
S-H Shim, D-H Han
BACKGROUND AND OBJECTIVE: Evidence shows that a short stature in adulthood is associated with chronic diseases. However, few studies have investigated the association between height and periodontitis. The purpose of this study was to examine the relationship between adult height and periodontitis and to assess the roles of covariates in different birth cohorts of Korea. MATERIAL AND METHODS: This was a cross-sectional study using the data from the 4th and 5th Korea National Health and Nutritional Examination Survey...
November 20, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29139559/associations-among-tooth-loss-systemic-inflammation-and-antibody-titers-to-periodontal-pathogens-in-japanese-patients-with-cardiovascular-disease
#10
N Aoyama, J-I Suzuki, N Kobayashi, T Hanatani, N Ashigaki, A Yoshida, Y Shiheido, H Sato, M Minabe, Y Izumi, M Isobe
BACKGROUND AND OBJECTIVE: It is well known that there is a strong relationship between periodontitis and cardiovascular disease (CVD). Tooth loss reflects an end-stage condition of oral diseases, such as periodontitis. Infection with specific periodontal pathogens is known as a possible factor that influences development of CVD. The aim of this study was to assess the relationship between the number of residual teeth and systemic inflammatory conditions in patients with CVD. MATERIAL AND METHODS: We divided 364 patients with CVD into four groups, according to the number of residual teeth: (i) ≥20 teeth; (ii) 10-19 teeth; (iii) 1-9 teeth; and (iv) edentulous...
November 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29110296/the-combined-and-individual-impact-of-diabetes-and-smoking-on-key-subgingival-periodontal-pathogens-in-patients-with-chronic-periodontitis
#11
C R Joaquim, T S Miranda, L M Marins, H D P Silva, M Feres, L C Figueiredo, P M Duarte
BACKGROUND AND OBJECTIVE: Comprehension of the similarities and differences in the composition of the subgingival microbiota of patients with diabetes mellitus (DM), smokers or smokers with DM is an important step in developing therapies specific for these groups at risk for periodontitis. Therefore, the aim of this study was to compare the combined and individual effects of DM and smoking on the levels and prevalence of key subgingival periodontal pathogens in patients with chronic periodontitis...
November 6, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29105779/moderate-to-long-term-therapeutic-outcomes-of-treated-aggressive-periodontitis-patients-without-regular-supportive-care
#12
V Goh, D Nihalani, K W S Yeung, E F Corbet, W K Leung
BACKGROUND AND OBJECTIVE: Risk for deterioration in treated aggressive periodontitis (AgP) individuals remained unclear. This retrospective cohort study investigated 7-26 years of periodontal outcomes and oral health-related quality of life (OHRQoL) of young adults with advanced periodontitis. MATERIAL AND METHODS: Eighty-nine previously treated patients with AgP were re-examined. Clinical and radiographic parameters before treatment discontinuation and at re-examination were compared...
November 5, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29105764/genetic-polymorphisms-and-periodontal-disease-in-populations-of-african-descent-a-review
#13
REVIEW
P F Gonçalves, T H Harris, T Elmariah, I Aukhil, M R Wallace, L M Shaddox
Aggressive periodontitis is a rare but rapidly progressing form of periodontal disease that usually affects otherwise systemically healthy individuals, at a young age. It usually affects first molars and incisors, which are usually lost if treatment is not properly and early rendered. Although of low prevalence, it affects individuals of African descent at a higher prevalence, and usually multiple members within the same family. Several studies have been performed in the attempt to evaluate specific single nucleotide polymorphisms (SNPs) that could be associated with this disease...
November 5, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29086417/synergistic-effect-of-photodynamic-therapy-and-alendronate-on-alveolar-bone-loss-in-rats-with-ligature-induced-periodontitis
#14
F Camacho-Alonso, R S Davia-Peña, C Vilaplana-Vivo, M R Tudela-Mulero, J J Merino, Y Martínez-Beneyto
BACKGROUND AND OBJECTIVE: Photodynamic therapy (PDT) and antiresorptive drugs, such as alendronate (ALN), have been shown to reduce alveolar bone loss. The aim of this study was to evaluate the possible synergic effects of combining PDT and ALN on bone loss in periodontitis in rats. MATERIAL AND METHODS: Periodontitis was induced by ligature in 60 Wistar rats randomized into the following groups: control (Group 1); PDT (Group 2); ALN 0.01 mg/kg (Group 3); ALN 0...
October 31, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29086411/effects-of-rosuvastatin-on-inducible-nitric-oxide-synthase-in-rats-with-hyperlipidaemia-and-periodontitis
#15
F Y Kırzıoğlu, Ö Özmen, B Doğan, M T Bulut, Ö Fentoğlu, M Özdem
BACKGROUND AND OBJECTIVE: Nitric oxide is a free radical that is synthesized from l-arginine by nitric oxide synthase (NOS). The level of inducible NOS (iNOS) in gingiva with periodontitis is higher than that in healthy gingiva. The aim of this study was to evaluate the effects of rosuvastatin administration on alveolar bone loss (ABL) and iNOS(+) cell counts in gingival tissues in rats with ligature-induced experimental periodontitis with/without hyperlipidaemia. MATERIAL AND METHODS: The rats were randomly divided into seven groups: Hy (cholesterol-added diet/water administration); HyP (cholesterol-added diet/periodontitis/water administration); HyPR (cholesterol-added diet/periodontitis/rosuvastatin administration); P (standard diet/periodontitis/water administration); PR (standard diet/periodontitis/rosuvastatin administration); C (standard diet/water administration); and R (standard diet/rosuvastatin administration)...
October 31, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29080226/temporal-expression-of-interleukin-22-interleukin-22-receptor-1-and-interleukin-22-binding-protein-during-experimental-periodontitis-in-rats
#16
S Pan, D Yang, J Zhang, Z Zhang, H Zhang, X Liu, C Li
BACKGROUND AND OBJECTIVE: Interleukin-22 (IL-22), mainly produced by CD4+ T-helper subtypes and innate lymphoid cells at barrier surfaces, is found to involve in several diseases, including diabetes, rheumatoid arthritis, peri-implantitis and chronic rhinosinusitis with nasal polyps. The purpose of this study was to investigate histological changes and the levels of interleukin-22, interleukin-22 receptor 1 (IL-22R1) and interleukin-22-binding protein (IL-22BP) in experimental periodontitis...
October 28, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29067681/chitosan-triclosan-particles-modulate-inflammatory-signaling-in-gingival-fibroblasts
#17
L Pavez, N Tobar, C Chacón, R Arancibia, C Martínez, C Tapia, A Pastor, M González, J Martínez, P C Smith
BACKGROUND AND OBJECTIVES: An important goal of periodontal therapy is the modulation of the inflammatory response. To this end, several pharmacological agents have been evaluated. Triclosan corresponds to an antibacterial and anti-inflammatory agent currently used in periodontal therapy. Chitosan is a natural polymer that may act as a drug delivery agent and exerts antibacterial and anti-inflammatory activities. Therefore, an association between both molecules might be useful to prevent inflammation and tissue destruction in periodontal tissues...
October 24, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29063626/polydopamine-deposition-with-anodic-oxidation-for-better-connective-tissue-attachment-to-transmucosal-implants
#18
F Teng, H Chen, Y Xu, Y Liu, G Ou
BACKGROUND AND OBJECTIVE: Nowadays, most designs for the transmucosal surface of implants are machined-smooth. However, connective tissue adhered to the smooth surface of an implant has poor mechanical resistance, which can render separation of tissue from the implant interface and induce epithelial downgrowth. Modification of the transmucosal surface of implants, which can help form a good seal of connective tissue, is therefore desired. We hypothesized that anodic oxidation (AO) and polydopamine (PD) deposition could be used to enhance the attachment between an implant and peri-implant connective tissue...
October 24, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29063603/effects-of-paraoxonase-1-on-the-cytodifferentiation-and-mineralization-of-periodontal-ligament-cells
#19
R Masumoto, J Kitagaki, M Matsumoto, S Miyauchi, C Fujihara, M Yamashita, S Yamada, M Kitamura, S Murakami
BACKGROUND AND OBJECTIVE: Single nucleotide polymorphisms (SNPs) of paraoxonase 1 (PON1) are known to be associated with the pathogenesis of osteoporosis and periodontitis. However, the effects of PON1 on the osteoblastic differentiation of periodontal ligament (PDL) cells are unclear. In this study, we examined the effects of PON1 on the osteoblastic differentiation of PDL cells, and analysed the role of PON1 SNPs on the pathogenesis of aggressive periodontitis (AgP) in the Japanese population...
October 24, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/29063599/observation-and-determination-of-periodontal-tissue-profile-using-optical-coherence-tomography
#20
S Kakizaki, A Aoki, M Tsubokawa, T Lin, K Mizutani, G Koshy, A Sadr, S Oda, Y Sumi, Y Izumi
BACKGROUND AND OBJECTIVE: Diagnosis is a crucial step in periodontal treatment. The aim of this study was to evaluate the effectiveness of optical coherence tomography (OCT) for observation and determination of periodontal tissue profiles in vivo. MATERIAL AND METHODS: In experiment 1, refractive indices of purified water, porcine gingiva and human gingiva at 1330 nm were determined for the analysis of OCT images of periodontal tissues. In experiment 2, OCT examination was performed in the midlabial apico-coronal plane of mandibular anteriors in 30 Asian volunteers with healthy gingiva...
October 24, 2017: Journal of Periodontal Research
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