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Journal of Periodontal Research

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https://www.readbyqxmd.com/read/28643938/oral-application-of-a-periodontal-pathogen-impacts-serpine1-expression-and-pancreatic-islet-architecture-in-prediabetes
#1
V Ilievski, U G Bhat, S Suleiman-Ata, B A Bauer, P T Toth, S T Olson, T G Unterman, K Watanabe
BACKGROUND AND OBJECTIVES: Epidemiological studies suggest a close association between periodontitis and prediabetes/insulin resistance (IR) but whether periodontitis causes prediabetes in humans is not known. Using various animal models, we have recently established that periodontitis can be an initiator of prediabetes, which is characterized by glucose intolerance, hyperinsulinemia and IR. In addition, our in vitro studies indicated that Porphyromonas gingivalis (Pg) induced insulin secretion in MIN6 β cells and this induction was in part SerpinE1 (plasminogen activator inhibitor 1, PAI1) dependent...
June 23, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28643937/proinflammatory-effects-and-mechanisms-of-calprotectin-on-human-gingival-fibroblasts
#2
H Gao, J Hou, H Meng, X Zhang, Y Zheng, L Peng
BACKGROUND AND OBJECTIVE: Calprotectin (S100A8/A9) is a heterodimer of S100A8 and S100A9 and is associated with multiple inflammatory diseases, including Crohn's disease, rheumatoid arthritis and periodontitis. Levels of calprotectin are elevated in the gingival crevicular fluid of patients with periodontitis; however, the effects of calprotectin on human gingival fibroblasts (HGFs) remain unknown. This study investigated the proinflammatory activity of calprotectin on HGFs and the functional receptors and signaling pathways engaged by calprotectin...
June 23, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28631313/salivary-gingival-crevicular-fluid-and-serum-levels-of-ghrelin-and-chemerin-in-patients-with-periodontitis-and-overweight
#3
H F R Jentsch, N Arnold, V Richter, J Deschner, T Kantyka, S Eick
BACKGROUND AND OBJECTIVE: Nutrition and body weight are modifying factors for periodontitis. The purpose of this study was to quantify two molecules (ghrelin and chemerin), released in association with food intake and obesity, in periodontally healthy and diseased individuals with respect to different body mass categories. MATERIAL AND METHODS: The two main groups (patients with chronic periodontitis and periodontally healthy/gingivitis volunteers) were subdivided into groups of subjects with normal weight [body mass index (BMI) <25] and groups of overweight/obese subjects (BMI ≥25)...
June 20, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28631261/distinct-post-translational-features-of-type-i-collagen-are-conserved-in-mouse-and-human-periodontal-ligament
#4
D M Hudson, M Garibov, D R Dixon, T Popowics, D R Eyre
BACKGROUND AND OBJECTIVE: Specifics of the biochemical pathways that modulate collagen cross-links in the periodontal ligament (PDL) are not fully defined. Better knowledge of the collagen post-translational modifications that give PDL its distinct tissue properties is needed to understand the pathogenic mechanisms of human PDL destruction in periodontal disease. In this study, the post-translational phenotypes of human and mouse PDL type I collagen were surveyed using mass spectrometry...
June 20, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28626895/khat-chewing-habit-produces-a-significant-adverse-effect-on%C3%A2-periodontal-oral-health-a-systematic-review-and-meta-analysis
#5
REVIEW
M S Al-Akhali, E A Al-Moraissi
Although there is a general agreement that a khat chewing habit produces clinicopathological changes in the oral mucosa. However there is no reliable evidence of the effects of a khat chewing habit on the periodontal tissues. Thus, authors aimed to investigate the influence of khat chewing habits on periodontal, oral health, by comparing khat chewers to non-chewers in respect of gingival recession, periodontal pocketing depth and loss of attachment. A systematic review and meta-analysis were conducted based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines...
June 18, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28621056/denervation-effectively-aggravates-rat-experimental-periodontitis
#6
X Yu, Z Gong, Q Lin, W Wang, S Liu, S Li
BACKGROUND: Nerve and its related factors in the occurrence and development of periodontitis are worthy of further study. Denervation research is a useful addition to nerve and innervation studies. The aim of this study is to establish a rat model of inferior alveolar nerve transection combined with ligature-induced periodontitis to elucidate the effects of denervation on ligature-induced rat periodontitis. MATERIAL AND METHODS: Sixty-four Wistar rats were distributed to the four groups randomly: ligation (L); denervation (D); ligation+denervation (LD); and normal (N) as control...
June 16, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28617953/the-gingival-biotype-in-a-cohort-of-chinese-subjects-with-and-without-history-of-periodontal-disease
#7
F Liu, G Pelekos, L J Jin
OBJECTIVE: The present study aimed to determine the gingival biotype in Chinese subjects with and without a history of periodontal disease. MATERIAL AND METHODS: Thirty periodontally healthy subjects and 20 subjects with treated chronic periodontitis were recruited. The mid-buccal gingival thickness of upper central and lateral incisors was measured by a customized caliper in all subjects. The crown length and crown width of these teeth were recorded in the healthy group, while gingival recession was measured in the periodontitis group...
June 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28617950/effect-of-cross-linked-vs-non-cross-linked-collagen-membranes-on-bone-a-systematic-review
#8
REVIEW
J Jiménez Garcia, S Berghezan, J M M Caramês, M M Dard, D N S Marques
The aim of this study was to conduct a systematic review to compare the clinical outcomes of two different resorbable collagen membranes in terms of regenerated bone volume, postoperative complications and membrane degradation during bone regeneration procedures. Randomized controlled trials (RCT) or controlled trials (CT) that compared both techniques were reviewed on four electronic databases up to December 2015, a manual search was performed on the bibliography of the collected articles and the authors were contacted for additional references if undetected on the electronic and manual search...
June 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28612506/synergistic-interactions-between-corrosion-and-wear-at-titanium-based-dental-implant-connections-a-scoping-review
#9
REVIEW
K Apaza-Bedoya, M Tarce, C A M Benfatti, B Henriques, M T Mathew, W Teughels, J C M Souza
Two-piece implant systems are mainly used in oral implantology involving an osseointegrated implant connected to an abutment, which supports prosthetic structures. It is well documented that the presence of microgaps, biofilms and oral fluids at the implant-abutment connection can cause mechanical and biological complications. The aim of this review paper was to report the degradation at the implant-abutment connection by wear and corrosion processes taking place in the oral cavity. Most of the retrieved studies evaluated the wear and corrosion (tribocorrosion) of titanium-based materials used for implants and abutments in artificial saliva...
June 14, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28590061/porphyromonas-gingivalis-lipopolysaccharide-regulates-ephrin-eph-signalling-in-human-periodontal-ligament-fibroblasts
#10
M Li, C Zhang, L Jin, K Matsuo, Y Yang
OBJECTIVE: EphrinA2-EphA2 and ephrinB2-EphB4 critically engage in bidirectional signalling to modulate alveolar bone remodelling. The present study aimed to investigate the effects of lipopolysaccharides (LPS) derived from Porphyromonas gingivalis on ephrin/Eph signalling in periodontal ligament fibroblasts (PDLFs). MATERIAL AND METHODS: The primary cultured PDLFs were incubated in the absence (as a control) or presence of P. gingivalisLPS at 0.001-10 μg/mL for 24 hours...
June 7, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28590058/transgelin-mediates-transforming-growth-factor-%C3%AE-1-induced-proliferation-of-human-periodontal-ligament-cells
#11
H Mitarai, N Wada, D Hasegawa, S Yoshida, M Sonoda, A Tomokiyo, S Hamano, S Serita, H Mizumachi, H Maeda
BACKGROUND AND OBJECTIVE: Human periodontal ligament cells (HPDLCs) express transforming growth factor-β1 (TGF-β1) that regulates differentiation and proliferation, and plays key roles in homeostasis of PDL tissue. Transgelin is a cytoskeleton-associated protein with an Smad-binding element in its gene promoter region. In this study, we examined the localization and potential function of transgelin in PDL tissue and cells. MATERIAL AND METHODS: Microarray analysis of HPDLC lines (2-14, 2-23 and 2-52) was performed...
June 7, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28590056/r202q-m694v-as-novel-mefv-gene-mutations-in-chronic-periodontitis-and-familial-mediterranean-fever
#12
Ö Fentoğlu, G Dinç, Ö Bağcı, A Doğru, I İlhan, F Y Kırzıoğlu, H Orhan
BACKGROUND AND OBJECTIVE: Familial Mediterranean fever (FMF) and chronic periodontitis are inflammatory diseases leading to an increase in the number of inflammasomes. To date, no published studies have reported on mutations in the Mediterranean fever (MEFV) gene in patients with chronic periodontitis, although the roles of MEFV gene mutations in FMF and FMF-associated amyloidosis (FMF-A) are well known. Therefore, the aim of this study was to evaluate the frequencies of MEFV gene mutations and serum amyloid A (SAA) and high-sensitivity C-reactive protein (hs-CRP) levels in patients with chronic periodontitis, FMF and FMF-A...
June 7, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28504459/steatosis-caused-by-experimental-periodontitis-is-reversible-after-removal-of-ligature-in-rats
#13
J Dos Santos Carvalho, A C Cardoso Guimarães Vasconcelos, E Herlany Pereira Alves, A Dos Santos Carvalho, F R P da Silva, L F de Carvalho França, A de Pádua Rocha Nóbrega Neto, D Di Lenardo, L K M de Souza, A L Dos R Barbosa, J-V R Medeiros, J S de Oliveira, D F P Vasconcelos
BACKGROUND AND OBJECTIVE: Periodontitis may promote harmful systemic effects such as changes in hepatic tissues. The purpose of this study was to investigate whether the steatosis and oxidative stress caused by experimental periodontitis are reversible in the liver. MATERIAL AND METHODS: Twenty-four rats were divided into three groups: control, periodontitis and P20-20 (20 days with experimental periodontitis and 20 days without experimental periodontitis, to verify the reversibility of hepatic injuries)...
May 15, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28464230/patients-with-chronic-periodontitis-present-increased-risk-for-osteoporosis-a-population-based-cohort-study-in-taiwan
#14
L-P Mau, Y-C Kuan, Y-W C Tsai, J-J Lin, G Huynh-Ba, P-W Weng, Y-S Shieh, W-C Cheng, R-Y Huang
OBJECTIVES: Chronic periodontitis is a bone destructive inflammatory disease with an adverse impact on general health and suggested underlying factors in common with osteoporosis. A few studies have examined the possible relationship between chronic periodontitis and osteoporosis; however, the results remain inconclusive. This longitudinal follow-up study investigated the possible risk of patients with chronic periodontitis to present osteoporosis by using a population-based national health insurance data set in Taiwan...
May 2, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28397250/the-cage-gene-sequence-as-a-diagnostic-marker-to-identify-jp2-and-non-jp2-highly-leukotoxic-aggregatibacter-actinomycetemcomitans-serotype-b-strains
#15
A Johansson, R Claesson, C Höglund Åberg, D Haubek, J Oscarsson
BACKGROUND AND OBJECTIVE: Aggregatibacter actinomycetemcomitans is involved in oral and systemic infections, and is associated with, eg aggressive forms of periodontitis and with endocarditis. The cagE gene encodes a ≈39 kDa putative exotoxin expressed by A. actinomycetemcomitans. The level of conservation of cagE, and its possible significance in periodontal disease, has not yet been thoroughly investigated. In the present study, the role of the cagE gene as a diagnostic marker has been investigated...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28397248/porphyromonas-gingivalis-antibody-levels-and-diagnosis-of-coronary-artery-disease-in-hiv-positive-individuals
#16
V L Berquist, A C Hearps, P Ford, A Jaworowski, S J Leishman, J F Hoy, J M Trevillyan
BACKGROUND AND OBJECTIVE: Periodontal disease has been associated with cardiovascular disease in the general population. It is unknown whether IgG antibody levels for periodontal pathogens are associated with the diagnosis of coronary artery disease (CAD) in HIV-positive individuals. MATERIAL AND METHODS: Twenty-four HIV-positive individuals (cases) with stored plasma available in the 12 months before CAD diagnosis were age- and sex-matched 1:2 with 46 HIV-positive individuals without CAD (controls)...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28394081/the-effect-of-low-level-laser-therapy-as-an-adjunct-to-non-surgical-periodontal-treatment-on-gingival-crevicular-fluid-levels-of-transforming-growth-factor-beta-1-tissue-plasminogen-activator-and-plasminogen-activator-inhibitor-1-in-smoking-and-non-smoking
#17
F Pamuk, M Lütfioğlu, A Aydoğdu, C Z Koyuncuoglu, E Cifcibasi, O S Badur
BACKGROUND AND OBJECTIVE: This study aimed to investigate the effects of low-level laser therapy (LLLT) as an adjunct to scaling and root planing (SRP) on smoking and non-smoking patients with chronic periodontitis. MATERIAL AND METHODS: The study was conducted using a split-mouth design with 30 patients with chronic periodontitis (15 smokers, 15 non-smokers) and 30 healthy individuals matched for age, sex and smoking status as controls. Groups were constituted as follows: Cp+SRP+Sham: non-smokers with chronic periodontitis treated with SRP; Cp+SRP+LLLT: non-smokers with chronic periodontitis treated with SRP+LLLT; SCp+SRP+Sham: smokers with chronic periodontitis treated with SRP; SCp+SRP+LLLT: smokers with chronic periodontitis treated with SRP+LLLT; C: control group comprised of periodontally healthy non-smokers; SC: control group comprised of periodontally healthy smokers...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28394043/efficacy-of-stem-cells-on-periodontal-regeneration-systematic-review-of-pre-clinical-studies
#18
REVIEW
S A Tassi, N Z Sergio, M Y O Misawa, C C Villar
This systematic review aims to evaluate mesenchymal stem cells (MSC) periodontal regenerative potential in animal models. MEDLINE, EMBASE and LILACS databases were searched for quantitative pre-clinical controlled animal model studies that evaluated the effect of local administration of MSC on periodontal regeneration. The systematic review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement guidelines. Twenty-two studies met the inclusion criteria. Periodontal defects were surgically created in all studies...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28393368/increased-levels-of-the-t-helper-22-associated-cytokine-interleukin-22-and-transcription-factor-aryl-hydrocarbon-receptor-in-patients-with-periodontitis-are-associated-with-osteoclast-resorptive-activity-and-severity-of-the-disease
#19
J Díaz-Zúñiga, S Melgar-Rodríguez, L Rojas, C Alvarez, G Monasterio, P Carvajal, R Vernal
BACKGROUND AND OBJECTIVE: Two new T-helper (Th) phenotypes have been recently described and named Th9 and Th22 lymphocytes; however, their role in the pathogenesis of periodontitis remains unclear. This study was aimed to assess whether Th9 and Th22 lymphocytes, through interleukin (IL)-9 and IL-22 production, respectively, are associated with the severity of periodontitis and bone resorption. MATERIAL AND METHODS: Gingival crevicular fluid samples and biopsies were obtained from patients with moderate-to-advanced chronic periodontitis and gingivitis, and healthy controls...
April 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28393367/increasing-popularity-of-waterpipe-tobacco-smoking-and-electronic-cigarette-use-implications-for-oral-healthcare
#20
REVIEW
C P Ramôa, T Eissenberg, S E Sahingur
Cigarette smoking increases the risk of developing several systemic conditions including cancer, cardiovascular and pulmonary diseases. Cigarette smoking is also detrimental to oral health as it increases the incidence and severity of oral cancer, periodontal diseases and peri-implantitis, as well as impacting negatively on the dental patients' response to therapy. Therefore, consideration of smoking behavior and recommendation of smoking cessation are important parts of dental treatment planning. However, cigarettes are no longer the most popular form of tobacco use among adolescents in the United States and globally...
April 10, 2017: Journal of Periodontal Research
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