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https://www.readbyqxmd.com/read/28453950/histological-assessment-of-the-carotid-sheath-in-patients-with-oral-squamous-cell-carcinoma
#1
Manjari Palliyalil, Venkatesh Anehosur, Abhijit Joshi, Swetha Acharya
PURPOSE: During surgical management of the neck using various types of neck dissection, the carotid sheath is removed, in particular, the part adjacent to the jugular lymph node chain, with the intention of preventing recurrence from the lymphatics present in it. The role of the carotid sheath as a potential origin for nodal recurrence has not been proved thus far. Working in a tissue plane between the carotid sheath and the neurovascular structures of the neck can lead to a greater chance of damage to these structures...
April 4, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28453906/oral-treponeme-major-surface-protein-sequence-diversity-and-distributions-within-periodontal-niches
#2
Meng You, Yuki Chan, Donnabella C Lacap-Bugler, Yong-Biao Huo, Wenling Gao, W Keung Leung, Rory M Watt
Treponema denticola and other species (phylotypes) of oral spirochetes are widely-considered to play important etiological roles in periodontitis and other oral infections. The major surface protein (Msp) of T. denticola is directly implicated in several pathological mechanisms. Here, we have analyzed msp sequence diversity across 68 strains of oral phylogroup 1 and 2 treponemes; including reference strains of T. denticola, Treponema putidum, Treponema medium, 'Treponema vincentii', and 'Treponema sinensis'...
April 28, 2017: Molecular Oral Microbiology
https://www.readbyqxmd.com/read/28453837/borrelia-burgdorferi-bbi39-paralogs-targets-of-protective-immunity-reduce-pathogen-persistence-either-in-hosts-or-in-the-vector
#3
Preeti Singh, Deepshikha Verma, Brian T Backstedt, Simarjot Kaur, Manish Kumar, Alexis A Smith, Kavita Sharma, Xiuli Yang, José F Azevedo, Maria Gomes-Solecki, Ozlem Buyuktanir, Utpal Pal
Borrelia burgdorferi genome harbors several paralogous gene families (pgf) that can encode immunogenic proteins of unknown function. Protein-protein interaction assays using a transmission-blocking vaccine candidate, BBA52, as bait identified an interacting partner in spirochetes-a member of pgf 54, annotated as BBI39. We show that BBI39 is a surface-exposed membrane antigen that is immunogenic during spirochete infection, despite the gene being primarily transcribed in the vector with a transient expression in the host only at tick-bite sites...
March 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28453774/effect-of-dietary-bacteriophage-supplementation-on-internal-organs-fecal-excretion-and-ileal-immune-response-in-laying-hens-challenged-by-salmonella-enteritidis
#4
P A Adhikari, D E Cosby, N A Cox, J H Lee, W K Kim
With the current researches on replacing antibiotics with different dietary interventions, bacteriophages (BP) are potential antimicrobial intervention because of their ability to affect specific bacteria. A study was conducted to evaluate the role of BP against Salmonella enterica serovar Enteritidis (SE) on SE internal organs colonization and ileum immune response in laying hens. Hens were challenged both orally and intracloacally with 108 cfu/mL cells of nalidixic acid resistant Salmonella Enteritidis (SENAR)...
April 26, 2017: Poultry Science
https://www.readbyqxmd.com/read/28453633/role-of-dna-gyrase-and-topoisomerase-iv-mutations-in-fluoroquinolone-resistance-of-capnocytophaga-spp-clinical-isolates-and-laboratory-mutants
#5
Elodie Ehrmann, Anne Jolivet-Gougeon, Martine Bonnaure-Mallet, Thierry Fosse
Objectives: Capnocytophaga spp. are often reported to cause bacteraemia and extra-oral infections and are characterized by their significant contribution to resistance to β-lactam and macrolide-lincosamide-streptogramin antibiotics in the human oral microbiota. The implication of mutations in the quinolone resistance-determining region (QRDR) of DNA gyrase A and B ( gyrA and gyrB ) and topoisomerase IV ( parC and parE ) of fluoroquinolone (FQ)-resistant Capnocytophaga spp., hitherto unknown, was explored in this study...
April 26, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28453484/can-better-management-of-periodontal-disease-delay-the-onset-and-progression-of-alzheimer-s-disease
#6
Alice Harding, Sarita Robinson, St John Crean, Sim K Singhrao
A risk factor relationship exists between periodontal disease and Alzheimer's disease (AD) via tooth loss, and improved memory following dental intervention. This links the microbial contribution from indigenous oral periodontal pathogens to the manifestation of chronic conditions, such as AD. Here, we use Porphyromonas gingivalis infection to illustrate its effect on mental health. P. gingivalis infection, in its primary sub-gingival niche, can cause polymicrobial synergy and dysbiosis. Dysbiosis describes the residency of select commensals from the oral cavity following co-aggregation around the dominant keystone pathogen, such as P...
April 25, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28448635/excited-state-dynamics-of-bis-dehydroxycurcumin-tert-butyl-ester-a-diketo-shifted-derivative-of-the-photosensitizer-curcumin
#7
Luca Nardo, Angelo Maspero, Andrea Penoni, Giovanni Palmisano, Erika Ferrari, Monica Saladini
Bis-dehydroxycurcumin tert-butyl ester (K2T23) is a derivative of the natural spice curcumin. Curcumin is widely studied for its multiple therapeutic properties, including photosensitized cytotoxicity. However, the full exploitation of curcumin phototoxic potential is hindered by the extreme instability of its excited state, caused by very efficient non radiative decay by means of transfer of the enolic proton to the nearby keto oxygen. K2T23 is designed to exhibit a tautomeric equilibrium shifted toward the diketo conformers with respect to natural curcumin...
2017: PloS One
https://www.readbyqxmd.com/read/28448633/a-commensal-streptococcus-hijacks-a-pseudomonas-aeruginosa-exopolysaccharide-to-promote-biofilm-formation
#8
Jessica A Scoffield, Dingyu Duan, Fan Zhu, Hui Wu
Pseudomonas aeruginosa causes devastating chronic pulmonary infections in cystic fibrosis (CF) patients. Although the CF airway is inhabited by diverse species of microorganisms interlaced within a biofilm, many studies focus on the sole contribution of P. aeruginosa pathogenesis in CF morbidity. More recently, oral commensal streptococci have been identified as cohabitants of the CF lung, but few studies have explored the role these bacteria play within the CF biofilm. We examined the interaction between P...
April 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28448600/mscs-feeder-layers-induce-smg-self-organization-and-branching-morphogenesis
#9
Mahmoud Farahat, Gulsan Ara Sathi, Emilio Satoshi Hara, Hiroaki Taketa, Takuo Kuboki, Takuya Matsumoto
Dysfunction of salivary glands leads to several oral health problems, including dental caries, mastication and swallowing dysfunctions and multiple oral infections. Conventional treatments for such condition fell short of providing satisfying therapeutic results. Recent advances in organ regeneration therapy which utilize tissue stem cells to fabricate bioengineered 3D organ buds, have introduced a promising therapeutic tool for full functional organ regeneration. However, finding a sustainable and easily accessible cell source for such approaches is still challenging, especially in case of severely atrophied tissues such as irradiated salivary glands...
2017: PloS One
https://www.readbyqxmd.com/read/28448576/management-of-chronic-hepatitis-c-at-a-primary-health-clinic-in-the-high-burden-context-of-karachi-pakistan
#10
Yuely A Capileno, Rafael Van den Bergh, Dmytro Donchunk, Sven Gudmund Hinderaker, Saeed Hamid, Rosa Auat, Gul Ghuttai Khalid, Razia Fatima, Aashifa Yaqoob, Catherine Van Overloop
BACKGROUND: The burden of hepatitis C (HCV) infection in Pakistan is among the highest in the world, with a reported national HCV prevalence of 6.7% in 2014. In specific populations, such as in urban communities in Karachi, the prevalence is suspected to be higher. Interferon-free treatment for chronic HCV infection (CHC) could allow scale up, simplification and decentralization of treatment to such communities. We present an interim analysis over the course of February-December 2015 of an interferon-free, decentralised CHC programme in the community clinic in Machar Colony, Karachi, Pakistan...
2017: PloS One
https://www.readbyqxmd.com/read/28448558/the-herpevac-trial-for-women-sequence-analysis-of-glycoproteins-from-viruses-obtained-from-infected-subjects
#11
Miguel A Minaya, Maria Korom, Hong Wang, Robert B Belshe, Lynda A Morrison
The Herpevac Trial for Women revealed that three dose HSV-2 gD vaccine was 58% protective against culture-positive HSV-1 genital disease, but it was not protective against HSV-2 infection or disease. To determine whether vaccine-induced immune responses had selected for a particular gD sequence in strains infecting vaccine recipients compared with viruses infecting control subjects, genetic sequencing studies were carried out on viruses isolated from subjects infected with HSV-1 or HSV-2. We identified naturally occurring variants among the gD sequences obtained from 83 infected subjects...
2017: PloS One
https://www.readbyqxmd.com/read/28448318/two-state-collaborative-study-of-a-multifaceted-intervention-to-decrease-ventilator-associated-events
#12
Nishi Rawat, Ting Yang, Kisha J Ali, Mary Catanzaro, Mariah D Cohen, Donna O Farley, Lisa H Lubomski, David A Thompson, Bradford D Winters, Sara E Cosgrove, Michael Klompas, Kathleen A Speck, Sean M Berenholtz
OBJECTIVES: Ventilator-associated events are associated with increased mortality, prolonged mechanical ventilation, and longer ICU stay. Given strong national interest in improving ventilated patient care, the National Institute of Health and Agency for Healthcare Research and Quality funded a two-state collaborative to reduce ventilator-associated events. We describe the collaborative's impact on ventilator-associated event rates in 56 ICUs. DESIGN: Longitudinal quasi-experimental study...
April 26, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28448051/protocols-for-investigating-the-host-tissue-distribution-transmission-mode-and-effect-on-the-host-fitness-of-a-densovirus-in-the-cotton-bollworm
#13
Xianming Yang, Pengjun Xu, Robert I Graham, He Yuan, Kongming Wu
Many novel viruses have been discovered in animal hosts using next-generation sequencing technologies. Previously, we reported a mutualistic virus, Helicoverpa armigera densovirus (HaDV2), in a lepidopteran species, the cotton bollworm, Helicoverpa armigera (Hubner). Here, we describe the protocols that are currently used to study the effect of HaDV2 on its host. First, we establish a HaDV2-free cotton bollworm colony from a single breeding pair. Then, we orally inoculate some neonate larval offspring with HaDV2-containing filtered liquid to produce two colonies with the same genetic background: one HaDV2-infected, the other uninfected...
April 12, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447489/forodesine-in-the-treatment-of-cutaneous-t-cell-lymphoma
#14
Daniel J Lewis, Madeleine Duvic
Cutaneous T-cell lymphoma (CTCL) is characterized by the accumulation of neoplastic CD4+ T lymphocytes in the skin. Given the lack of curative treatments for CTCL, there is a significant need for new, superior therapies. Forodesine is a transition-state analogue that inhibits purine nucleoside phosphorylase. Because it selectively targets T lymphocytes, it represents a drug of interest for the treatment of CTCL. Areas covered: Phase I/II dose-ranging studies of intravenous (IV) and oral forodesine demonstrated its activity, safety, and tolerability for refractory CTCL...
April 27, 2017: Expert Opinion on Investigational Drugs
https://www.readbyqxmd.com/read/28447269/estimating-hiv-medication-adherence-and-persistence-two-instruments-for-clinical-and-research-use
#15
David A Wohl, A T Panter, Christine Kirby, Brooke E Magnus, Michael G Hudgens, Andrew G Allmon, Katie R Mollan
Antiretroviral therapy (ART) requires lifelong daily oral therapy. While patient characteristics associated with suboptimal ART adherence and persistence have been described in cohorts of HIV-infected persons, these factors are poor predictors of individual medication taking behaviors. We aimed to create and test instruments for the estimation of future ART adherence and persistence for clinical and research applications. Following formative work, a battery of 148 items broadly related to HIV infection and treatment was developed and administered to 181 HIV-infected patients...
April 26, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28446791/tissue-distribution-of-the-mers-coronavirus-receptor-in-bats
#16
W Widagdo, Lineke Begeman, Debby Schipper, Peter R van Run, Andrew A Cunningham, Nils Kley, Chantal B Reusken, Bart L Haagmans, Judith M A van den Brand
Middle East respiratory syndrome coronavirus (MERS-CoV) has been shown to infect both humans and dromedary camels using dipeptidyl peptidase-4 (DPP4) as its receptor. The distribution of DPP4 in the respiratory tract tissues of humans and camels reflects MERS-CoV tropism. Apart from dromedary camels, insectivorous bats are suggested as another natural reservoir for MERS-like-CoVs. In order to gain insight on the tropism of these viruses in bats, we studied the DPP4 distribution in the respiratory and extra-respiratory tissues of two frugivorous bat species (Epomophorus gambianus and Rousettus aegyptiacus) and two insectivorous bat species (Pipistrellus pipistrellus and Eptesicus serotinus)...
April 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28446177/the-susceptibility-to-fosfomycin-of-gram-negative-bacteria-isolates-from-urinary-tract-infection-in-the-czech-republic-data-from-a-unicentric-study
#17
Miroslav Fajfr, Miroslav Louda, Pavla Paterová, Lenka Ryšková, Jaroslav Pacovský, Josef Košina, Helena Žemličková, Miloš Broďák
BACKGROUND: Against a background of rapid increase of β-lactamase-producing or multi-resistant pathogenic bacteria and the resulting lack of effective antibiotic treatment, some older antibiotics have been tested for new therapeutic uses. One of these is fosfomycin, to which according to studies these resistant bacteria are very sensitive. Our study was designed because there is no data on the fosfomycin susceptibility rate in the Czech Republic. METHOD: In this study from January 2013 to June 2014 3295 unique isolates of Gram-negative bacteria which had caused urinary tract infections were examined...
April 26, 2017: BMC Urology
https://www.readbyqxmd.com/read/28446171/oral-immune-priming-with-bacillus-thuringiensis-induces-a-shift-in-the-gene-expression-of-tribolium-castaneum-larvae
#18
Jenny M Greenwood, Barbara Milutinović, Robert Peuß, Sarah Behrens, Daniela Esser, Philip Rosenstiel, Hinrich Schulenburg, Joachim Kurtz
BACKGROUND: The phenomenon of immune priming, i.e. enhanced protection following a secondary exposure to a pathogen, has now been demonstrated in a wide range of invertebrate species. Despite accumulating phenotypic evidence, knowledge of its mechanistic underpinnings is currently very limited. Here we used the system of the red flour beetle, Tribolium castaneum and the insect pathogen Bacillus thuringiensis (Bt) to further our molecular understanding of the oral immune priming phenomenon...
April 26, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28445444/pharmaceutical-equivalence-of-clarithromycin-oral-dosage-forms-marketed-in-nairobi-county-kenya
#19
Rebecca O Manani, Kennedy O Abuga, Hezekiah K Chepkwony
Clarithromycin is a broad-spectrum semi-synthetic macrolide indicated for treatment of pneumonias, Helicobacter pylori, and chlamydial and skin infections. The object of this study was to evaluate the pharmaceutical equivalence of 14 generic clarithromycin products marketed in Nairobi County, Kenya, to the innovator products, using in vitro dissolution profiles and similarity factors (f₂). Further, dissolution profiles of four innovator formulations manufactured in different sites were compared. Fourteen clarithromycin tablets/capsules and four suspensions were subjected to assay and comparative dissolution runs at pH 1...
April 26, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28445212/plasma-concentration-of-itraconazole-in-patients-with-hematologic-malignancies-treated-with-itraconazole-oral-solution
#20
Atsushi Marumo, Shuichi Miyawaki, Naoaki Dan, Ken Ishiyama
BACKGROUND: The prophylactic administration of itraconazole (ITCZ) is effective for preventing mycotic infections during chemotherapy in patients with hematologic malignancies. However, fungal infections can occur when the ITCZ does not reach an effective concentration. METHODS: We conducted a prospective study to monitor the plasma concentration of ITCZ and hydroxyl-ITCZ (OH-ITCZ) weekly and to verify whether the day 3 plasma concentration of ITCZ could predict the subsequent acquisition of an effective plasma concentration...
April 25, 2017: Therapeutic Drug Monitoring
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