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https://www.readbyqxmd.com/read/28317632/actinomyces-neuii-causing-vertebral-osteomyelitis
#1
Kelly Pizzo, Christopher Arnold, Brian Wispelwey
No abstract text is available yet for this article.
April 2017: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/28302494/actinomyces-israelii-in-radicular-cysts-a-molecular-study
#2
Nathália Rodrigues Gomes, Marina Gonçalves Diniz, Thais Dos Santos Fontes Pereira, Carlos Estrela, Luiz de Macedo Farias, Bruno Augusto Benevenuto de Andrade, Carolina Cavaliéri Gomes, Ricardo Santiago Gomez
OBJECTIVE: To investigate whether the microscopic filamentous aggregates observed in radicular cysts are associated with the molecular identification of Actinomyces israelii. Moreover, to verify whether this bacterium can be detected in radicular cyst specimens not presenting aggregates. STUDY DESIGN: Microscopic colonies suggestive of Actinomyces were found in 8 out of 279 radicular cyst samples (case group). The case and control groups (n = 12; samples without filamentous colonies) were submitted to the semi-nested polymerase chain reaction to test the presence of A israelii...
February 21, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28299215/intra-abdominal-actinomycosis-mimicking-malignant-abdominal-disease
#3
Ali Ridha, Njideka Oguejiofor, Sarah Al-Abayechi, Emmanuel Njoku
Abdominal actinomycosis is a rare infectious disease, caused by gram positive anaerobic bacteria, that may appear as an abdominal mass and/or abscess (Wagenlehner et al. 2003). This paper presents an unusual case of a hemodynamically stable 80-year-old man who presented to the emergency department with 4 weeks of worsening abdominal pain and swelling. He also complains of a 20-bound weight loss in 2 months. A large tender palpable mass in the right upper quadrant was noted on physical exam. Laboratory studies showed a normal white blood cell count, slightly decreased hemoglobin and hematocrit, and mildly elevated total bilirubin and alkaline phosphatase...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28296966/an-oral-multispecies-biofilm-model-for-high-content-screening-applications
#4
Nadine Kommerein, Sascha N Stumpp, Mathias Müsken, Nina Ehlert, Andreas Winkel, Susanne Häussler, Peter Behrens, Falk F R Buettner, Meike Stiesch
Peri-implantitis caused by multispecies biofilms is a major complication in dental implant treatment. The bacterial infection surrounding dental implants can lead to bone loss and, in turn, to implant failure. A promising strategy to prevent these common complications is the development of implant surfaces that inhibit biofilm development. A reproducible and easy-to-use biofilm model as a test system for large scale screening of new implant surfaces with putative antibacterial potency is therefore of major importance...
2017: PloS One
https://www.readbyqxmd.com/read/28290977/actinomyces-related-tubo-ovarian-abscess-in-a-poorly-controlled-type-ii-diabetic-with-a-copper-intrauterine-device
#5
Ashley L Sawtelle, Nicole P Chappell, Caela R Miller
BACKGROUND: The historic association of Actinomyces israelii infection with intrauterine devices (IUDs) has long been recognized. In recent years, the risk of developing pelvic inflammatory disease with a copper or levonorgestrel IUD has been less than 1% in women who are low risk for sexually transmitted infections. IUD-related pelvic infections secondary to actinomyces have largely vanished from contemporary practice. CASE: A 49-year-old using a copper IUD for contraception with poorly controlled type II diabetes mellitus was admitted for suspected tubo-ovarian abscess on the basis of abdominopelvic pain, leukocytosis, and computed tomography findings...
March 2017: Military Medicine
https://www.readbyqxmd.com/read/28289087/reoxidation-of-the-thiol-disulfide-oxidoreductase-mdba-by-a-bacterial-vitamin-k-epoxide-reductase-in-the-biofilm-forming-actinobacterium-actinomyces-oris
#6
Truc Thanh Luong, Melissa E Reardon-Robinson, Sara D Siegel, Hung Ton-That
Post-translocational protein folding in the Gram-positive biofilm-forming actinobacterium Actinomyces oris is mediated by a membrane-bound thiol-disulfide oxidoreductase named MdbA, which catalyzes oxidative folding of nascent polypeptides transported by the Sec translocon. Reoxidation of MdbA involves a bacterial Vitamin K Epoxide Reductase (VKOR)-like protein that contains four cysteine residues C93/C101 and C175/C178 with the latter forming a canonical CXXC thioredoxin-like motif; however, the mechanism of VKOR-mediated reoxidation of MdbA is not known...
March 13, 2017: Journal of Bacteriology
https://www.readbyqxmd.com/read/28266109/role-of-microbial-biofilms-in-the-maintenance-of-oral-health-and-in-the-development-of-dental-caries-and-periodontal-diseases-consensus-report-of-group-1-of-the-joint-efp-orca-workshop-on-the-boundaries-between-caries-and-periodontal-disease
#7
Mariano Sanz, David Beighton, Michael A Curtis, Jaime A Cury, Irene Dige, Henrik Dommisch, Roger Ellwood, Rodrigo Giacaman, David Herrera, Mark C Herzberg, Eija Könönen, Philip D Marsh, Joerg Meyle, Alex Mira, Ana Molina, Andrea Mombelli, Marc Quirynen, Eric C Reynolds, Lior Shapira, Egija Zaura
BACKGROUND AND AIMS: The scope of this working group was to review (1) ecological interactions at the dental biofilm in health and disease, (2) the role of microbial communities in the pathogenesis of periodontitis and caries, and (3) the innate host response in caries and periodontal diseases. RESULTS AND CONCLUSIONS: A health-associated biofilm includes genera such as Neisseria, Streptococcus, Actinomyces, Veillonella and Granulicatella. Microorganisms associated with both caries and periodontal diseases are metabolically highly specialized and organized as multispecies microbial biofilms...
March 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28255479/actinomyces-meyeri-popliteal-cyst-infection-and-review-of-the-literature
#8
Bharath Raj Palraj, Ala S Dababneh
A 66-year-old, Caucasian male presented with pain and swelling involving the left knee of one-week duration. Arthrocentesis was negative for evidence of septic arthritis. Magnetic resonance imaging (MRI) study of the left knee showed degenerative arthritis, partial tear of medial meniscus, and a complex fluid collection along the posteromedial aspect of the left knee suggestive of popliteal cyst. He underwent arthroscopy with partial medial meniscectomy. Intraoperative joint fluid was noted to be cloudy but cultures were negative...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28249746/the-evaluation-of-cultivable-microbiota-profile-in-patients-with-secondary-endodontic-infection-before-and-after-photo-activated-disinfection
#9
Maryam Pourhajibagher, Roghayeh Ghorbanzadeh, Steven Parker, Nasim Chiniforush, Abbas Bahador
BACKGROUND: Secondary/persistent endodontic infection can be the outcome of failure of endodontic treatment. Photo-activated disinfection (PAD) can be a useful adjunct to mechanical and antimicrobial agents in eliminating endopathogenic microorganisms. In this study, we evaluated the effect of PAD on diversity and count of microbiota related to secondary/persistent endodontic infections. MATERIALS AND METHODS: Root canal samples were taken using sterile paper points from the root canals of 14 patients with secondary/persistent endodontic infections after removing the root-canal filling materials...
February 26, 2017: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28248874/clinical-features-and-surgical-outcomes-of-primary-canaliculitis-with-concretions
#10
Shengjin Xiang, Bin Lin, Qintuo Pan, Meiqin Zheng, Xiaoyi Qin, Youpei Wang, Zongduan Zhang
The purpose of our study is to analyze the clinical, ultrasonic, microbiologic, and histopathologic characteristics, management, and outcomes in a series of primary canaliculitis with concretions patients who underwent canaliculotomy with curettage.Thirty-six patients were reviewed for age, sex, location and laterality, duration of symptoms, clinical symptoms, ultrasonic signs, result of microbiologic culture and histopathologic examination, treatment, and outcomes. Main outcomes were the clinical, ultrasonic, and microbiological characteristics of the canalicular concretions; the histopathologic profiles; and the treatment effect...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28225785/betel-nut-chewing-oral-premalignant-lesions-and-the-oral-microbiome
#11
Brenda Y Hernandez, Xuemei Zhu, Marc T Goodman, Robert Gatewood, Paul Mendiola, Katrina Quinata, Yvette C Paulino
Oral cancers are attributed to a number of causal agents including tobacco, alcohol, human papillomavirus (HPV), and areca (betel) nut. Although betel nut chewing has been established as an independent cause of oral cancer, the mechanisms of carcinogenesis are poorly understood. An investigation was undertaken to evaluate the influence of betel nut chewing on the oral microbiome and oral premalignant lesions. Study participants were recruited from a dental clinic in Guam. Structured interviews and oral examinations were performed...
2017: PloS One
https://www.readbyqxmd.com/read/28218631/the-non-innoculous-hilar-calcification-recurrent-pneumonia-secondary-to-broncholith-associated-actinomyces
#12
Oluwayemisi Ojemakinde, Adam Wellikoff, Catherine Chaudoir, Guillermo Sangster, Alberto Simoncini, Carlos Previgliano, Disha Adelle Desouza
Dystrophic calcification of hilar lymph nodes is a common response to chronic inflammation related to several etiologies and rarely is associated with any clinical findings. A clinical scenario related to these calcified lymph nodes can thus be delayed by the low clinical suspicion associated with such a presumably innocuous finding. Normal respiratory movements however, can cause erosion into adjacent bronchi leading to a broncholith, complications of which can result in morbidity. We illustrate one of these complications, a partial obstruction with subsequent recurrent infection due to normal oral flora - actinomyces...
January 2017: Journal of the Louisiana State Medical Society: Official Organ of the Louisiana State Medical Society
https://www.readbyqxmd.com/read/28211942/antifungal-activity-change-of-streptomyces-rimosus-my02-mediated-by-confront-culture-with-other-microorganism
#13
Jicheng Yu, Qiu Liu, Chao Chen, Xiaohui Qi
Streptomyces rimosus can produce antibacterial and antifungal antibiotics, which have important applications in medicine and agriculture. Seventy-nine microbial strains were employed to assay interaction between S. rimosus MY02 and different fungi, actinomyces, and bacteria when confront cultured on solid media. The results showed that the presence of a microorganism might affect the activity of another one. When S. rimosus MY02 confront cultured with other microorganisms, the inductive effect might be positive or negative...
February 17, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28209819/draft-genome-sequence-of-actinomyces-glycerinitolerans-strain-g10-t-isolated-from-sheep-rumen-fluid
#14
Susakul Palakawong Na Ayudthaya, Nikolaos Strepis, Peter Pristaš, Caroline M Plugge
Actinomyces glycerinitolerans strain G10(T), which was isolated from sheep rumen fluid, can metabolize a range of substrates, including complex carbohydrates to organic acids (OAs). Here, we report a 3.69-Mbp draft genome of Actinomyces glycerinitolerans.
February 16, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28199766/dysbiosis-of-oral-buccal-mucosa-microbiota-in-patients-with-oral-lichen-planus
#15
Yuan He, Diping Gong, Cong Shi, Fangyang Shao, Jiahao Shi, Jian Fei
OBJECTIVE: The bacterial community structure of buccal mucosa in patients with oral lichen planus was evaluated and compared with healthy control. SUBJECTS AND METHODS: Buccal scraping samples have been taken on 43 oral lichen planus patients (21 erosive and 22 non-erosive) and 21 mucosal healthy volunteers. The V3 hypervariable 16S rDNA region were amplified and sequenced by high-throughput 454 pyrosequencing. RESULTS: 94.26% of the total buccal bacteria were classified into 15 abundant genera...
February 15, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28193569/analysis-of-the-expression-of-nlrp3-and-aim2-in-periapical-lesions-with-apical-periodontitis-and-microbial-analysis-outside-the-apical-segment-of-teeth
#16
Shujun Ran, Bin Liu, Shensheng Gu, Zhe Sun, Jingping Liang
OBJECTIVE: To detect the distribution and expression levels of the nucleotide-binding oligomerization domain-like receptor protein 3 (NLRP3) and the absent in Melanoma 2 (AIM2) inflammasomes in periapical lesions and to analyse the possible microbial stimuli outside of teeth. DESIGN: The distribution of NLRP3 and AIM2 inflammasomes in sixteen periapical lesions was investigated by immunohistochemistry. Meanwhile, the relative gene expression levels of NLRP3 and AIM2 in sixteen periapical lesions and three health periodontal tissue were quantified by real-time polymerase chain reaction (PCR)...
February 6, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28188167/hidradenitis-suppurativa-neutrophilic-dermatoses-and-diverticular-disease-in-a-young-african-american-patient
#17
Kavita Darji, Maulik M Dhandha, Mary Guo
Hidradenitis suppurativa (HS) is a chronic skin disorder of the terminal follicular epithelium of apocrine sweat glands, manifesting as painful and exudative papules, pustules, cysts or nodules. This inflammatory condition often presents with other systemic and cutaneous disorders. We present the case of an African-American man with HS who was also diagnosed with neutrophilic dermatoses and diverticular disease. Neutrophilic dermatosis was identified based on histopathology findings. Our patient underwent multiple surgeries for flaring of his skin condition...
February 10, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28177125/association-of-oral-microbiome-with-type-2-diabetes-risk
#18
J Long, Q Cai, M Steinwandel, M K Hargreaves, S R Bordenstein, W J Blot, W Zheng, X O Shu
BACKGROUND AND OBJECTIVE: The oral microbiome may help to maintain systemic health, including how it affects blood glucose levels; however, direct evidence linking the oral microbiome with diabetes is lacking. MATERIAL AND METHODS: We compared the oral microbiome profiles of 98 participants with incident diabetes, 99 obese non-diabetics and 97 normal weight non-diabetics, via deep sequencing of the 16S rRNA gene. RESULTS: We found that the phylum Actinobacteria was present significantly less abundant among patients with diabetes than among the controls (p = 3...
February 8, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28173873/microbiomic-differences-in-tumor-and-paired-normal-tissue-in-head-and-neck-squamous-cell-carcinomas
#19
Hannah Wang, Pauline Funchain, Gurkan Bebek, Jessica Altemus, Huan Zhang, Farshad Niazi, Charissa Peterson, Walter T Lee, Brian B Burkey, Charis Eng
BACKGROUND: While the role of the gut microbiome in inflammation and colorectal cancers has received much recent attention, there are few data to support an association between the oral microbiome and head and neck squamous cell carcinomas. Prior investigations have been limited to comparisons of microbiota obtained from surface swabs of the oral cavity. This study aims to identify microbiomic differences in paired tumor and non-tumor tissue samples in a large group of 121 patients with head and neck squamous cell carcinomas and correlate these differences with clinical-pathologic features...
February 7, 2017: Genome Medicine
https://www.readbyqxmd.com/read/28169034/diagnosis-of-actinomyces-graevenitzii-lung-infection-using-linear-ebus
#20
Alberto Caballero Vázquez, Juan Jose Cruz Rueda, Julián Andrés Ceballos Gutierrez
No abstract text is available yet for this article.
February 3, 2017: Archivos de Bronconeumología
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