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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
#1
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/29139559/associations-among-tooth-loss-systemic-inflammation-and-antibody-titers-to-periodontal-pathogens-in-japanese-patients-with-cardiovascular-disease
#2
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/29138754/the-relation-between-periodontopathogenic-bacterial-levels-and-resistin-in-the-saliva-of-obese-type-2-diabetic-patients
#3
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/29138298/first-insights-into-the-diverse-human-archaeome-specific-detection-of-archaea-in-the-gastrointestinal-tract-lung-and-nose-and-on-skin
#4
Kaisa Koskinen, Manuela R Pausan, Alexandra K Perras, Michael Beck, Corinna Bang, Maximilian Mora, Anke Schilhabel, Ruth Schmitz, Christine Moissl-Eichinger
Human-associated archaea remain understudied in the field of microbiome research, although in particular methanogenic archaea were found to be regular commensals of the human gut, where they represent keystone species in metabolic processes. Knowledge on the abundance and diversity of human-associated archaea is extremely limited, and little is known about their function(s), their overall role in human health, or their association with parts of the human body other than the gastrointestinal tract and oral cavity...
November 14, 2017: MBio
https://www.readbyqxmd.com/read/29135794/fostering-oral-hygiene-habits-and-self-regulation-skills-an-intervention-with-preschool-children
#5
Martha Leticia Gaeta, Judith Cavazos, Maria Del Rosario Cabrera, Pedro Rosário
The purpose of this study was to evaluate a program to promote self-regulation for self-care skills in preschool-aged children focused on oral habits and good oral health. Participants were 210 Mexican children aged 4 to 5 years who attended the Children's Assistance Community Centers (CAIC in Spanish). Findings showed that children who participated in the program, compared with those who did not, decreased significantly the teeth-bacteria plaque. The former also improved their self-regulation skills and dental hygiene habits...
January 2018: Family & Community Health
https://www.readbyqxmd.com/read/29133389/selective-killing-of-helicobacter-pylori-with-ph-responsive-helix-coil-conformation-transitionable-antimicrobial-polypeptides
#6
Menghua Xiong, Yan Bao, Xin Xu, Hua Wang, Zhiyuan Han, Zhiyu Wang, Yeqing Liu, Songyin Huang, Ziyuan Song, Jinjing Chen, Richard M Peek, Lichen Yin, Lin-Feng Chen, Jianjun Cheng
Current clinical treatment of Helicobacter pylori infection, the main etiological factor in the development of gastritis, gastric ulcers, and gastric carcinoma, requires a combination of at least two antibiotics and one proton pump inhibitor. However, such triple therapy suffers from progressively decreased therapeutic efficacy due to the drug resistance and undesired killing of the commensal bacteria due to poor selectivity. Here, we report the development of antimicrobial polypeptide-based monotherapy, which can specifically kill H...
November 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29129876/-microbial-ecology-along-the-gastrointestinal-tract
#7
Ethan T Hillman, Hang Lu, Tianming Yao, Cindy H Nakatsu
The ecosystem of the human gastrointestinal (GI) tract traverses a number of environmental, chemical, and physical conditions because it runs from the oral cavity to the anus. These differences in conditions along with food or other ingested substrates affect the composition and density of the microbiota as well as their functional roles by selecting those that are the most suitable for that environment. Previous studies have mostly focused on Bacteria, with the number of studies conducted on Archaea, Eukarya, and Viruses being limited despite their important roles in this ecosystem...
November 10, 2017: Microbes and Environments
https://www.readbyqxmd.com/read/29128569/lysophosphatidic-acid-receptor-1-is-important-for-intestinal-epithelial-barrier-function-and-susceptibility-to-colitis
#8
Songbai Lin, Yiran Han, Kayte Jenkin, Sei-Jung Lee, Maiko Sasaki, Jan-Michael Klapproth, Peijian He, C Chris Yun
Intestinal epithelial cells form a barrier that is critical in protecting the host from the hostile luminal environment. Previously, we showed that lysophosphatidic acid receptor 1 (LPAR1) regulates proliferation of intestinal epithelial cells such that the absence of LPA1 mitigates epithelial wound healing process. This study provides evidence that LPA1 is important for the maintenance of epithelial barrier integrity. The epithelial permeability, determined by fluorescently labeled dextran flux and transepithelial resistance, is increased in Lpar1(-/-) (Lpa1(-/-)) mouse intestine...
November 8, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/29127996/highlights-in-immune-response-microbiome-and-precision-medicine-in-allergic-disease-and-asthma
#9
EDITORIAL
Milena Sokolowska, Cezmi A Akdis
Several recent key findings in immunology of allergic diseases that have led to a need of reassessment of our current thinking are reviewed in this issue of the journal. Recently developed strong evidence on the role of hygiene hypothesis in protection from allergic disease and its immune mechanisms is reviewed by Ober et al. The authors pointed out immunologic mechanisms of lower prevalence of asthma and allergic sensitization observed among Amish children living on traditional farms with higher endotoxin levels as compared to Hutterite children living on industrialized farms...
October 2017: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29125139/salivary-proteins-and-microbiota-as-biomarkers-for-early-childhood-caries-risk-assessment
#10
REVIEW
Abdullah S Hemadi, Ruijie Huang, Yuan Zhou, Jing Zou
Early childhood caries (ECC) is a term used to describe dental caries in children aged 6 years or younger. Oral streptococci, such as Streptococcus mutans and Streptococcus sorbrinus, are considered to be the main etiological agents of tooth decay in children. Other bacteria, such as Prevotella spp. and Lactobacillus spp., and fungus, that is, Candida albicans, are related to the development and progression of ECC. Biomolecules in saliva, mainly proteins, affect the survival of oral microorganisms by multiple innate defensive mechanisms, thus modulating the oral microflora...
November 10, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/29124968/probiotic-bacteria-cell-walls-stimulate-the-activity-of-the-intestinal-epithelial-cells-and-macrophage-functionality
#11
J M Lemme-Dumit, M A Polti, G Perdigón, C Maldonado Galdeano
The effect of oral administration of probiotic bacteria cell walls (PBCWs) in the stimulation of the immune system in healthy BALB/c mice was evaluated. We focused our investigation mainly on intestinal epithelial cells (IECs) which are essential for coordinating an adequate mucosal immune response and on the functionality of macrophages. The probiotic bacteria and their cell walls were able to stimulate the IECs exhibiting an important activation and cytokine releases. Supplementation with PBCWs promoted macrophage activation from peritoneum and spleen, indicating that the PBCWs oral administration was able to improve the functionality of the macrophages...
November 10, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/29120125/risk-factors-associated-with-black-tooth-stain
#12
Katica Prskalo, Eva Klarić Sever, Ivan Alerić, Tatjana Antonić Jelić, Ivona Žaja
The aim of the study was to show whether there is any influence of food, drink or drug intake on the formation of tooth discoloration. A total of 500 patients aged 15-25 years were examined to take part in the study. Of these, 60 patients were selected and divided into two groups of 30 patients each. Group 1 included patients with black pigmentation on vestibular/oral tooth surfaces. Group 2 included patients without discoloration (control). Data were recorded in a questionnaire. Atomic absorption spectrometry was used to determine elements in discoloration samples...
March 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29118685/a-rare-thermophilic-bug-in-complicated-diverticular-abscess
#13
Kyawzaw Lin, Sithu Lin, Aung Naing Lin, Thinzar Lin, Zin Mar Htun, Madhavi Reddy
Actinomycosis is a form of painful abscess in the gastrointestinal tract or in deep tissue caused by actinomyces species. They are one of the commensal bacteria in the oral cavity and gastrointestinal tract of humans but can opportunistically cause infection in immunosuppressive hosts through invasion of breached mucosa or necrotic tissue while mimicking malignancy, gastrointestinal tuberculosis, and inflammatory bowel disease. Actinomyces israelii is, by far, the major and most common human pathogen throughout literatures...
September 2017: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/29118411/gut-remediation-a-potential-approach-to-reducing-chromium-accumulation-using-lactobacillus-plantarum-tw1-1
#14
Gaofeng Wu, Xingpeng Xiao, Pengya Feng, Fuquan Xie, Zhengsheng Yu, Wenzhen Yuan, Pu Liu, Xiangkai Li
Some lactobacilli have protective effects against some heavy metals in mammals, but the underlying mechanism is not fully understood. To evaluate the remediation potency and the mechanism of Lactobacillus against chromium (Cr) in mice, Lactobacillus plantarum TW1-1 was orally administrated to Kunming mice for 7 weeks during exposure to 1 mM K2Cr2O7 in drinking water. Results showed that TW1-1 helped to decrease Cr accumulation in tissues and increase Cr excretion in feces, and may also attenuate alterations in oxidative stress and histopathological changes caused by Cr exposure...
November 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29118256/survey-of-knowledge-beliefs-and-behaviors-of-migrant-vietnamese-parents-regarding-young-children-s-oral-health
#15
Uyen N Nguyen, Dorothy J Rowe, Judith C Barker
Purpose: The purpose of this study was to investigate the oral health knowledge, beliefs, and behaviors of migrant Vietnamese parents of 1-5 year-olds in San Jose, California.Method: A verbally-administered survey was conducted with a convenience sample of 45 Vietnamese parents recruited at San Jose public libraries. Following preliminary screening, written informed consent was obtained from eligible individuals. A pre-tested, structured 94-item questionnaire was used to collect information regarding parent demographics, and the parent's knowledge, beliefs, and behaviors about children's oral health...
April 2017: Journal of Dental Hygiene: JDH
https://www.readbyqxmd.com/read/29115611/d%C3%A2-tagatose-inhibits-the-growth-and-biofilm-formation-of-streptococcus%C3%A2-mutans
#16
Khaleque Hasibul, Haruyuki Nakayama-Imaohji, Masahito Hashimoto, Hisashi Yamasaki, Takaaki Ogawa, Junpei Waki, Ayano Tada, Saori Yoneda, Masaaki Tokuda, Minoru Miyake, Tomomi Kuwahara
Dental caries is an important global health concern and Streptococcus mutans has been established as a major cariogenic bacterial species. Reports indicate that a rare sugar, D‑tagatose, is not easily catabolized by pathogenic bacteria. In the present study, the inhibitory effects of D‑tagatose on the growth and biofilm formation of S. mutans GS‑5 were examined. Monitoring S. mutans growth over a 24 h period revealed that D‑tagatose prolonged the lag phase without interfering with the final cell yield...
November 8, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29114639/knee-septic-arthritis-after-arthroscopy-incidence-risk-factors-functional-outcome-and-infection-eradication-rate
#17
REVIEW
G Balato, S L Di Donato, T Ascione, A D'Addona, F Smeraglia, G Di Vico, D Rosa
Purpose  Septic knee arthritis following arthroscopy is a rare but dreaded complication. Definition and management of knee deep infections are quite discussed in literature. In this review, literature regarding infections after knee arthroscopy is analyzed highlighting the incidence, causative bacteria, risk factors as well as clinical outcomes. Methods  We performed a review of the literature matching the following key words: "septic arthritis" OR "infection" AND "arthroscopy" AND "knee." Knee arthroscopic procedures, such as debridement, meniscectomy, meniscus repair, synovectomy, microfracture, and lateral release, were considered...
June 2017: Joints
https://www.readbyqxmd.com/read/29114393/vibrio-furnissii-an-emerging-pathogen-causing-acute-gastroenteritis-a-case-report
#18
Mamatha Ballal, Vignesh Shetty, Sohan Rodney Bangera, Mukhyaprana Prabhu, Shashikiran Umakanth
Introduction.Vibrio furnissii is a motile, Gram-negative, oxidase-positive, halophilic bacteria first defined in 1977. It is ubiquitously present in marine environments and is one of the 11 non-cholera Vibrio species pathogenic in humans, which can lead to human gastroenteritis and extra-intestinal manifestations. Case presentation. A 73-year-old female patient was admitted to the hospital with acute gastroenteritis after consumption of seafood, which later by microbiological investigations was confirmed as Vibrio furnissii, a member of the family Vibrionaceae...
September 2017: JMM Case Reports
https://www.readbyqxmd.com/read/29114245/the-selective-interaction-of-pistacia-lentiscus-oil-vs-human-streptococci-an-old-functional-food-revisited-with-new-tools
#19
Germano Orrù, Cristina Demontis, Antonello Mameli, Enrica Tuveri, Pierpaolo Coni, Giuseppina Pichiri, Ferdinando Coghe, Antonella Rosa, Paola Rossi, Guy D'hallewin
Pistacia lentiscus berry oil (LBO) represents a typical vegetal product of the Mediterranean basin that has been formally used in traditional cuisine for 100s of years. In addition to its interesting alimentary properties, this product could represent an interesting candidate in the field of research on the study of new anti-infective agents. In fact, in Mediterranean countries, lentisk oil still continues to be widely used in folk medicine for oral and skin affections, in particular, acute gingivitis, pediatric skin infections such as impetigo and foot plaques, and biofilm related infections often associated with Streptococcus spp...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29114218/periodontitis-microbiomes-and-their-role-in-alzheimer-s-disease
#20
Anna B Pritchard, StJohn Crean, Ingar Olsen, Sim K Singhrao
As far back as the eighteenth and early nineteenth centuries, microbial infections were responsible for vast numbers of deaths. The trend reversed with the introduction of antibiotics coinciding with longer life. Increased life expectancy however, accompanied the emergence of age related chronic inflammatory states including the sporadic form of Alzheimer's disease (AD). Taken together, the true challenge of retaining health into later years of life now appears to lie in delaying and/or preventing the progression of chronic inflammatory diseases, through identifying and influencing modifiable risk factors...
2017: Frontiers in Aging Neuroscience
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