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https://www.readbyqxmd.com/read/29150938/regulation-of-calcification-in-human-aortic-smooth-muscle-cells-infected-with-high-glucose-treated-porphyromonas-gingivalis
#1
Te-Chuan Chen, Chien-Tsong Lin, Shao-Ju Chien, Shun-Fu Chang, Cheng-Nan Chen
Porphyromonas (P.) gingivalis infection leading to the periodontitis has been associated with the development of systemic diseases, including cardiovascular diseases and diabetes. However, the effect of a high concentration of glucose (HG) on the invasion efficiency of P. gingivalis and the consequent modulation of pathogenesis in vascular cells, especially in the vascular smooth muscle cells (VSMCs), remains unclear. Hence, the aim of this study was to investigate whether treating P. gingivalis with HG could change its invasion capability and result in VSMC calcification and the underlying mechanism...
November 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29150769/changes-in-expression-of-the-membrane-receptors-cd14-mhc-ii-sr-a-and-tlr4-in-tissue-specific-monocytes-macrophages-following-porphyromonas-gingivalis-lps-stimulation
#2
Chunfang Wu, Chongwu Liu, Kai Luo, Yanfen Li, Jun Jiang, Fuhua Yan
The aim of the study was to provide a theoretical foundation for understanding the relationship between periodontal diseases and systemic diseases by examining the inflammatory effect of Porphyromonas gingivalis lipopolysaccharide (LPS) on monocytes/macrophages isolated from tissues distinct from the oral cavity in normal and hyperlipidemic New Zealand white rabbits. Macrophages were isolated from four separate tissues (mononuclear cells from blood, alveolar macrophages, peritoneal macrophages, and Kupffer cells) from both normal and hyperlipidemic New Zealand white rabbits...
November 18, 2017: Inflammation
https://www.readbyqxmd.com/read/29150625/porphyromonas-gingivalis-lipopolysaccharides-act-exclusively-through-tlr4-with-a-resilience-between-mouse-and-human
#3
Brice Nativel, David Couret, Pierre Giraud, Olivier Meilhac, Christian Lefebvre d'Hellencourt, Wildriss Viranaïcken, Christine Robert Da Silva
Porphyromonas gingivalis is a key bacterium in chronic periodontitis, which is associated with several chronic inflammatory diseases. Lipopolysaccharides from P. gingivalis (Pg LPS) can activate multiple cell types via the production of pro-inflammatory cytokines. The receptors for Pg LPS have initially been reported as TLR2, contrasting with the well-studied TLR4 receptor for E. coli LPS; this observation remains controversial since synthetic Pg lipid A activates TLR4 but not TLR2. Despite this observation, the dogma of Pg LPS-mediated TLR2 activation remains the basis of many hypotheses and result interpretations...
November 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29149452/contextual-and-individual-determinants-of-periodontal-disease-multilevel-analysis-based-on-andersen-s-model
#4
Maria I B Valente, Mario V Vettore
AIM: To investigate the relationship of contextual and individual factors with periodontal disease in dentate adults and older people using the Andersen's behavioural model. METHODS: Secondary individual data from 6011 adults and 2369 older people from the Brazilian Oral Health Survey (2010) were combined with contextual data for 27 cities. Attachment loss (AL) categories for each sextant were coded and summed to obtain the periodontal disease measure. The association of predisposing, enabling and need characteristics at city and individual level with periodontal disease was assessed using an adapted version of the Andersen's behavioural model...
November 17, 2017: Community Dentistry and Oral Epidemiology
https://www.readbyqxmd.com/read/29149107/treponema-denticola-chymotrypsin-like-proteinase-may-contribute-to-orodigestive-carcinogenesis-through-immunomodulation
#5
Mikko T Nieminen, Dyah Listyarifah, Jaana Hagström, Caj Haglund, Daniel Grenier, Dan Nordström, Veli-Jukka Uitto, Marcela Hernandez, Tülay Yucel-Lindberg, Taina Tervahartiala, Mari Ainola, Timo Sorsa
BACKGROUND: Periodontal pathogens have been linked to oral and gastrointestinal (orodigestive) carcinogenesis. However, the exact mechanisms remain unknown. Treponema denticola (Td) is associated with severe periodontitis, a chronic inflammatory disease leading to tooth loss. The anaerobic spirochete Td is an invasive bacteria due to its major virulence factor chymotrypsin-like proteinase. Here we aimed to investigate the presence of Td chymotrypsin-like proteinase (Td-CTLP) in major orodigestive tumours and to elucidate potential mechanisms for Td to contribute to carcinogenesis...
November 16, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/29146851/draft-whole-genome-sequences-of-periodontal-pathobionts-porphyromonas-gingivalis-prevotella-intermedia-and-tannerella-forsythia-contain-phase-variable-restriction-modification-systems
#6
Richard D Haigh, Liam A Crawford, Joseph D Ralph, Joseph J Wanford, Sonia R Vartoukian, Karolin Hijazi, William Wade, Marco R Oggioni
Periodontal disease comprises mild to severe inflammatory host responses to oral bacteria that can cause destruction of the tooth-supporting tissue. We report genome sequences for 18 clinical isolates of Porphyromonas gingivalis, Prevotella intermedia, and Tannerella forsythia, Gram-negative obligate anaerobes that play a role in the periodontal disease process.
November 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/29143189/oral-hygiene-and-oral-health-in-older-people-with-dementia-a-comprehensive-review-with-focus-on-oral-soft-tissues
#7
REVIEW
Suzanne Delwel, Tarik T Binnekade, Roberto S G M Perez, Cees M P M Hertogh, Erik J A Scherder, Frank Lobbezoo
BACKGROUND: The number of older people with dementia and a natural dentition is growing. Recently, a systematic review concerning the oral health of older people with dementia with the focus on diseases of oral hard tissues was published. OBJECTIVE: To provide a comprehensive literature overview following a systematic approach of the level of oral hygiene and oral health status in older people with dementia with focus on oral soft tissues. METHODS: A literature search was conducted in the databases PubMed, CINAHL, and the Cochrane Library...
November 15, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29142443/oral-health-and-erectile-dysfunction
#8
REVIEW
Vijendra P Singh, Sunil K Nettemu, Sowmya Nettem, Rajesh Hosadurga, Sangeeta U Nayak
Ample evidence strongly supports the fact that periodontal disease is a major risk factor for various systemic diseases namely cardio-vascular disease, diabetes mellitus, etc. Recently, investigators focussed on exploring the link between chronic periodontitis (CP) and erectile dysfunction (ED) by contributing to the endothelial dysfunction. Both the diseases share common risk factors. Various studies conducted in different parts of the world in recent years reported the evidence linking this relationship as well as improvement in ED with periodontal treatment...
July 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29140971/effect-of-s-mutans-and-s-sanguinis-on-growth-and-adhesion-of-p-gingivalis-and-their-ability-to-adhere-to-different-dental-materials
#9
Yan Tu, Xiaolong Ling, Yadong Chen, Yuan Wang, Na Zhou, Hui Chen
BACKGROUND Caries and periodontal diseases are caused by the biofilm formed by caries- and periodontal disease-related bacteria. Specific biofilms could be formed on different filling materials in oral cavity. Thus, to explore the inhibition effect of restorative filling materials on biofilm formation is of great significance in the treatment of caries and periodontal disease. MATERIAL AND METHODS The supernatants of S. mutans, S. sanguinis, and P. gingivalis suspension were combined with BHI broth. After 24 h, the live P...
November 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29140387/full-mouth-rehabilitation-with-calvarium-bone-grafts-and-dental-implants-for-a-papillon-lef%C3%A3-vre-syndrome-patient-case-report
#10
Bassam M Kinaia, Kristyn Hope, Ahmed Zuhaili, Jean Francois Tulasne
Papillon-Lefèvre syndrome (PLS) is a rare autosomal recessive disorder of keratinization associated with palmoplantar keratoderma and severe periodontitis resulting in complete edentulism in late adolescence. The pathognomonic dental features of PLS are pathologic migration, hypermobility, and exfoliation of the teeth without any signs of root resorption. It has been suggested that an effective way to treat PLS patients presenting early in the disease progression is extraction of the erupted primary dentition or hopeless permanent teeth followed by antibiotic coverage with periodontal therapy for the remaining teeth...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29139565/leukocyte-adhesion-defect-i-rare-primary-immune-deficiency
#11
Nitesh Tewari, Vijay Prakash Mathur, Vikender Singh Yadav, Prabhat Chaudhari
Leukocyte adhesion defect I is a rare disorder (1:1,000,000) caused by diminished expression of CD-18 β2 integrins on leukocytes leading to abnormal adhesion, migration, and chemotaxis. Clinical manifestations include delayed separation of umbilical cord, omphalitis, recurrent severe infections, impaired wound healing, persistent oral ulcers, and severe periodontitis in primary and permanent dentition. A 5-year-old girl, second-born child to parents with consanguinity, presented with pain and mobility of lower teeth...
November 15, 2017: Special Care in Dentistry
https://www.readbyqxmd.com/read/29139559/associations-among-tooth-loss-systemic-inflammation-and-antibody-titers-to-periodontal-pathogens-in-japanese-patients-with-cardiovascular-disease
#12
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/29139168/hunter-gatherer-dental-pathology-do-historic-accounts-of-aboriginal-australians-correspond-to-the-archeological-record-of-dental-disease
#13
Judith Littleton
OBJECTIVES: Studies of hunter-gatherer oral pathology, particularly in Australia, often focus upon dental wear and caries or assume that historic studies of Aboriginal people reflect the precontact past. Consequently the range of population variation has been underestimated. In this paper dental pathology from human remains from Roonka are compared with a model of dental pathology derived from historic studies. The aim is to identify aspects of dental pathology indicative of regional or intra-population diversity...
November 15, 2017: American Journal of Human Biology: the Official Journal of the Human Biology Council
https://www.readbyqxmd.com/read/29138754/the-relation-between-periodontopathogenic-bacterial-levels-and-resistin-in-the-saliva-of-obese-type-2-diabetic-patients
#14
Natheer Al-Rawi, Farah Al-Marzooq
This study aims to investigate the relation between resistin and periodontopathogenic bacterial levels in the saliva of obese adults compared to healthy control and to examine whether salivary resistin can serve as a biomarker of type 2 diabetes in obese patients. A total of 78 saliva samples were collected from patients attending to the University Dental Hospital, Sharjah, UAE. The patients were divided into three equal groups: obese diabetics, obese nondiabetics, and nonobese nondiabetic control. Salivary resistin was measured using ELISA...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29137082/trends-in-the-prevalence-of-periodontitis-in-taiwan-from-1997-to-2013-a-nationwide-population-based-retrospective-study
#15
Hui-Chieh Yu, Ni-Yu Su, Jing-Yang Huang, Shiuan-Shinn Lee, Yu-Chao Chang
Periodontitis is one of the most prevalent oral diseases. In this study, we probed the nationwide registered database to assess the time trends of prevalence of periodontitis in Taiwan.A retrospective study was conducted to analyze the registered database compiled by the National Health Insurance provided by the Department of Health, Taiwan, from 1997 to December 2013.We found that the prevalence of periodontitis significantly increased from 11.5% in 1997 to 19.59% in 2013 (P for trend < .0001). The mean age ± standard deviation with periodontitis from 1997 to 2013 was 54...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29134111/periodontitis-induced-by-bacterial-infection-exacerbates-features-of-alzheimer-s-disease-in-transgenic-mice
#16
Naoyuki Ishida, Yuichi Ishihara, Kazuto Ishida, Hiroyuki Tada, Yoshiko Funaki-Kato, Makoto Hagiwara, Taslima Ferdous, Mohammad Abdullah, Akio Mitani, Makoto Michikawa, Kenji Matsushita
Periodontitis is a localized infectious disease caused by periodontopathic bacteria, such as Porphyromonas gingivalis. Recently, it has been suggested that bacterial infections may contribute to the onset and the progression of Alzheimer's disease (AD). However, we do not have any evidence about a causative relationship between periodontitis and AD. In this study, we investigated by using a transgenic mouse model of AD whether periodontitis evoked by P. gingivalis modulates the pathological features of AD. Cognitive function was significantly impaired in periodontitis-induced APP-Tg mice, compared to that in control APP-Tg mice...
2017: NPJ Aging and Mechanisms of Disease
https://www.readbyqxmd.com/read/29132440/influence-of-successful-periodontal-intervention-in-renal-disease-inspired-study-protocol-for-a-randomised-controlled-pilot-clinical-trial
#17
Praveen Sharma, Paul Cockwell, Thomas Dietrich, Charles Ferro, Natalie Ives, Iain L C Chapple
BACKGROUND: Patients with chronic kidney disease (CKD) exhibit increased morbidity and mortality which is associated with an increased systemic inflammatory burden. Identifying and managing comorbid diseases that contribute to this load may inform novel care pathways that could have a beneficial impact on the morbidity/mortality associated with CKD. Periodontitis, a highly prevalent, chronic inflammatory disease affecting the supporting structures of teeth, is associated with an increased systemic inflammatory and oxidative stress burden and the successful treatment of periodontitis has been shown to reduce both...
November 13, 2017: Trials
https://www.readbyqxmd.com/read/29131612/functional-characterization-of-epitheaflagallin-3-o-gallate-generated-in-laccase-treated-green-tea-extracts-in-the-presence-of-gallic-acid
#18
Nobuya Itoh, Junji Kurokawa, Yasuhiro Isogai, Masaru Ogasawara, Takayuki Matsunaga, Tutomu Okubo, Yuji Katsube
Epitheaflagallin (ETFG) and epitheaflagallin 3-O-gallate (ETFGg) are minor polyphenols in black tea extract that are enzymatically synthesized from epigallocatechin (EGC) and epigallocatechin gallate (EGCg), respectively, in green tea extract via laccase oxidation in the presence of gallic acid. The constituents of laccase-treated green tea extract in the presence of gallic acid are thus quite different from those of non-laccase-treated green tea extract: EGC and EGCg are present in lower concentrations, and ETFG and ETFGg are present in higher concentrations...
November 13, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29129119/periodontal-inflamed-surface-area-and-periodontal-case-definition-classification
#19
Yago Leira, Pablo Martín-Lancharro, Juan Blanco
OBJECTIVE: To assess whether a higher periodontal inflamed surface area (PISA) may reflect more severe periodontitis, and if so, to calculate which cut-off point should be used to classify a patient as suffering from periodontitis. MATERIAL AND METHODS: Eighty subjects were selected based on their periodontal status and were divided into 4 groups of 20 each; periodontally healthy, mild periodontitis, moderate periodontitis and severe periodontitis. In addition, demographic data, smoking status and socioeconomic status were also recorded...
November 11, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29128406/recognition-of-candida-albicans-by-gingival-fibroblasts-the-role-of-tlr2-tlr4-cd14-and-myd88
#20
Claudia Ramos Pinheiro, Ana Lúcia Coelho, Carine Ervolino de Oliveira, Thaís Helena Gasparoto, Gustavo Pompermaier Garlet, João Santana Silva, Carlos Ferreira Santos, Karen Angélica Cavassani, Cory M Hogaboam, Ana Paula Campanelli
Recent evidence indicates that nonprofessional immune cells such as epithelial cells, endothelial cells, and fibroblasts also contribute to innate immunity via secretion of cytokines. Fibroblasts are the principal type of cell found in the periodontal connective tissues and they are involved in the immune response during periodontal disease. The role of fibroblasts in the recognition of pathogens via Toll-like receptors (TLRs) has been established; however, few studies have been conducted concerning the involvement of innate immune receptors in the recognition of Candida albicans by gingival fibroblast...
November 8, 2017: Cytokine
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