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https://www.readbyqxmd.com/read/28264907/increased-pilus-production-conferred-by-a-naturally-occurring-mutation-alters-host-pathogen-interaction-in-favor-of-carriage-in-streptococcus-pyogenes
#1
Anthony R Flores, Randall J Olsen, Concepcion Cantu, Kyler B Pallister, Fermin E Guerra, Jovanka M Voyich, James M Musser
Studies of the human pathogen group A Streptococcus (GAS) define the carrier phenotype as increased ability to adhere to and persist on epithelial surfaces and decreased ability to cause disease. We tested the hypothesis that a single amino acid change (Arg135Gly) in a highly conserved sensor kinase (LiaS) of a poorly defined GAS regulatory system contributes to a carrier phenotype through increased pilus production. When introduced into an emm serotype-matched invasive strain, the carrier allele (liaS(R135G)) recapitulated a carrier phenotype defined by increased ability to adhere to mucosal surfaces and decreased ability to cause disease...
March 6, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28229128/repetitive-head-impact-exposure-and-later-life-plasma-total-tau-in-former-national-football-league-players
#2
Michael L Alosco, Yorghos Tripodis, Johnny Jarnagin, Christine M Baugh, Brett Martin, Christine E Chaisson, Nate Estochen, Linan Song, Robert C Cantu, Andreas Jeromin, Robert A Stern
INTRODUCTION: Blood protein analysis of total tau (t-tau) may be a practical screening biomarker for chronic traumatic encephalopathy (CTE), a neurodegenerative tauopathy associated with repetitive head impact (RHI) exposure. We examined plasma t-tau in symptomatic former National Football League (NFL) players compared with controls and the relationship between RHI exposure and later-life plasma t-tau. METHODS: Ninety-six former NFL players (age 40-69) and 25 same-age controls underwent blood draw to determine plasma t-tau levels...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28222261/enhanced-release-of-molecules-upon-uv-light-irradiation-from-photoresponsive-hydrogels-prepared-from-bifunctional-azobenzene-and-four-arm-poly-ethylene-glycol
#3
Shiva Kumar Rastogi, Hailee E Anderson, Joseph Lamas, Scott L Barrett, Travis Cantu, Stefan Zauscher, William J Brittain, Tania Betancourt
Advances in biosensors and drug delivery depend on hydrogels that respond to external stimuli. In this work we de-scribe the preparation and characterization of photoresponsive hydrogels prepared by crosslinking of di-NHS ester of azobenzoic acid and four-armed, amine-terminated poly(ethylene glycol). The porous structure and composition of the hydrogels were confirmed by scanning electron microscopy and Fourier transform infrared (FTIR) spectroscopy. The reversible photoisomerization of the azobenzene-containing hydrogel crosslinkers in the gels was confirmed by ab-sorption spectroscopy...
February 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28219109/the-use-of-braf-v600e-mutation-specific-immunohistochemistry-in-pediatric-langerhans-cell-histiocytosis
#4
Leomar Y Ballester, Miguel D Cantu, Karen P H Lim, Stephen F Sarabia, Lizmery Suarez Ferguson, C Renee Webb, Carl E Allen, Kenneth L McClain, Carrie A Mohila, Jyotinder N Punia, Angshumoy Roy, Dolores H López-Terrada, M John Hicks, Kevin E Fisher
BRAF p.V600E mutations are detected in greater than 50% of pediatric Langerhans cell histiocytosis (LCH) lesions. However, the use of mutation-specific BRAF V600E immunohistochemistry (IHC) as a surrogate for molecular testing in pediatric LCH is unknown. We tested the mutation-specific BRAF V600E monoclonal antibody (clone VE1) in formalin-fixed, paraffin-embedded LCH samples from 26 pediatric patients (14 males and 12 females, ages 7 mo-17 y) using allele-specific real-time polymerase chain reaction (PCR) with a limit of detection of 0...
February 20, 2017: Hematological Oncology
https://www.readbyqxmd.com/read/28218463/closed-reference-metatranscriptomics-enables-in-planta-profiling-of-putative-virulence-activities-in-the-grapevine-trunk-disease-complex
#5
Abraham Morales-Cruz, Gabrielle Allenbeck, Rosa Figueroa-Balderas, Vanessa E Ashworth, Daniel P Lawrence, Renaud Travadon, Rhonda J Smith, Kendra Baumgartner, Philippe E Rolshausen, Dario Cantu
Grapevines, like other perennial crops, are affected by so-called 'trunk diseases', which damage the trunk and other woody tissues. Mature grapevines typically contract more than one trunk disease and often multiple grapevine trunk pathogens (GTPs) are recovered from infected tissues. The co-existence of different GTP species in complex and dynamic microbial communities complicates the study of the molecular mechanisms underlying disease development especially under vineyard conditions. The objective of this study was to develop and optimize a community-level transcriptomics (i...
February 20, 2017: Molecular Plant Pathology
https://www.readbyqxmd.com/read/28038736/-bone-cement-implant-as-an-alternative-for-orbital-floor-reconstruction-a-case-report
#6
Enrique Vargas-Solalinde, Marisol E Huichapa-Padilla, Daniel Garza-Cantú, Víctor H Reyna-Martínez, Julio Alatorre-Ricardo, Juan Luis González-Treviño
BACKGROUND: The management of orbitary fractures is one of the most challenging in facial trauma; the variety of reconstruction materials for its treatment is broad and is constantly improving, but despite this there is no consensus for its use or literature that sustains it. OBJECTIVE: To present the use and design of a preformed bone implant as an alternative for the reconstruction of orbital floor fractures in the pediatric age group. CLINICAL CASE: A 7-year old male who suffered a right hemifacial contusion trauma with clinical and tomographic diagnosis of right pure blowout type orbital floor fracture with inferior rectus muscle entrapment and right post-traumatic palpebral ptosis...
December 27, 2016: Cirugia y Cirujanos
https://www.readbyqxmd.com/read/27989783/the-binding-effectiveness-of-anti-r-disintegrin-polyclonal-antibodies-against-disintegrins-and-pii-and-piii-metalloproteases-an-immunological-survey-of-type-a-b-and-a-b-venoms-from-mohave-rattlesnakes
#7
Esteban Cantú, Sahiti Mallela, Matthew Nyguen, Raúl Báez, Victoria Parra, Rachel Johnson, Kyle Wilson, Montamas Suntravat, Sara Lucena, Alexis Rodríguez-Acosta, Elda E Sánchez
Snake venoms are known to have different venom compositions and toxicity, but differences can also be found within populations of the same species contributing to the complexity of treatment of envenomated victims. One of the first well-documented intraspecies venom variations comes from the Mohave rattlesnake (Crotalus scutulatus scutulatus). Initially, three types of venoms were described; type A venom is the most toxic as a result of ~45% Mojave toxin in the venom composition, type B lacks the Mojave toxin but contains over 50% of snake venom metalloproteases (SVMPs)...
January 2017: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/27958762/cd47-and-nox1-mediate-dynamic-fluid-phase-macropinocytosis-of-native-ldl
#8
Gábor Csányi, Douglas M Feck, Pushpankur Ghoshal, Bhupesh Singla, Huiping Lin, Shanmugam Nagarajan, Daniel N Meijles, Imad Al Ghouleh, Nadiezhda Cantu-Medellin, Eric E Kelley, Lukasz Mateuszuk, Jeffrey S Isenberg, Simon Watkins, Patrick J Pagano
AIMS: Macropinocytosis has been implicated in cardiovascular and other disorders, yet physiological factors that initiate fluid-phase internalization and the signaling mechanisms involved remain poorly identified. The present study was designed to examine whether matrix protein thrombospondin-1 (TSP1) stimulates macrophage macropinocytosis and, if so, to investigate the potential signaling mechanism involved. RESULTS: TSP1 treatment of human and murine macrophages stimulated membrane ruffle formation and pericellular solute internalization by macropinocytosis...
January 31, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27731934/the-perioperative-lung-transplant-virome-torque-teno-viruses-are-elevated-in-donor-lungs-and-show-divergent-dynamics-in-primary-graft-dysfunction
#9
A A Abbas, J M Diamond, C Chehoud, B Chang, J J Kotzin, J C Young, I Imai, A R Haas, E Cantu, D J Lederer, K Meyer, R K Milewski, K M Olthoff, A Shaked, J D Christie, F D Bushman, R G Collman
Primary graft dysfunction (PGD) is a principal cause of early morbidity and mortality after lung transplantation, but its pathogenic mechanisms are not fully clarified. Thus far, studies using standard clinical assays have not linked microbial factors to PGD. We previously used comprehensive metagenomic methods to characterize viruses in lung allografts >1 month post-transplant and found that levels of Anellovirus, mainly Torque teno viruses (TTV), were significantly higher than in non-transplant healthy controls...
October 12, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27680385/development-of-a-teen-focused-exergame
#10
Debbe Thompson, Dora Cantu, Madhur Rajendran, Mayur Rajendran, Tanay Bhargava, Yuting Zhang, Cheng Chen, Yan Liu, Zhigang Deng
INTRODUCTION: Exergames require body movement to play and may be an effective method for enhancing teen physical activity (PA). However, results have been mixed. Innovative methods are needed to develop Exergames that increase and maintain PA. Self-representational avatars, or avatars created from a digital image of an individual, may increase PA (e.g., intensity, duration) during Exergame play. This article addresses this novel idea by describing the development of an Exergame played with a self-representational avatar...
September 28, 2016: Games for Health
https://www.readbyqxmd.com/read/27676441/cerebral-18-%C3%A2-f-t807-av1451-retention-pattern-in-clinically-probable-cte-resembles-pathognomonic-distribution-of-cte-tauopathy
#11
D L Dickstein, M Y Pullman, C Fernandez, J A Short, L Kostakoglu, K Knesaurek, L Soleimani, B D Jordan, W A Gordon, K Dams-O'Connor, B N Delman, E Wong, C Y Tang, S T DeKosky, J R Stone, R C Cantu, M Sano, P R Hof, S Gandy
Chronic traumatic encephalopathy (CTE) is a neurodegenerative disorder most commonly associated with repetitive traumatic brain injury (TBI) and characterized by the presence of neurofibrillary tangles of tau protein, known as a tauopathy. Currently, the diagnosis of CTE can only be definitively established postmortem. However, a new positron emission tomography (PET) ligand, [(18)F]T807/AV1451, may provide the antemortem detection of tau aggregates, and thus various tauopathies, including CTE. Our goal was to examine [(18)F]T807/AV1451 retention in athletes with neuropsychiatric symptoms associated with a history of multiple concussions...
September 27, 2016: Translational Psychiatry
https://www.readbyqxmd.com/read/27673121/poster-370-an-international-observational-study-of-botulinum-toxin-type-a-in-spasticity-spasticity-in-practice-space
#12
Jörg Wissel, Julian P Harriss, Olivier Simon, Kati Sternberg, Nicolas Roche, Carlos Cantú-Brito, Svetlana E Khatkova, Patrik Säterö
No abstract text is available yet for this article.
September 2016: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/27669010/neospora-caninum-in-axis-deer-axis-axis-and-fallow-deer-dama-dama-in-northern-mexico
#13
Jose R De La Torre, Christian Bautista-Piña, J Alfonso Ortega-S, Antonio Cantu-Covarruvias, Maria Genoveva Alvarez-Ojeda, Dora Romero-Salas, Scott E Henke, Clayton D Hilton, David G Hewitt, Randy W De Young, Tyler A Campbell, Fred C Bryant
Serum samples from 18 axis deer ( Axis axis ) and 19 fallow deer ( Dama dama ) were analyzed with an enzyme-linked immunosorbent assay for Neospora caninum antibodies. Two axis (11%) and two fallow deer (11%) were positive for N. caninum antibodies.
January 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/27608499/biogas-production-from-the-mechanically-pretreated-liquid-fraction-of-sorted-organic-municipal-solid-wastes
#14
A Alvarado-Lassman, J M Méndez-Contreras, A Martínez-Sibaja, E S Rosas-Mendoza, N A Vallejo-Cantú
The high liquid content in fruit and vegetable wastes makes it convenient to mechanically separate these wastes into mostly liquid and solid fractions by means of pretreatment. Then, the liquid fraction can be treated using a high-rate anaerobic biofilm reactor to produce biogas, simultaneously reducing the amount of solids that must be landfilled. In this work, the specific composition of municipal solid waste (MSW) in a public market was determined; then, the sorted organic fraction of municipal solid waste was treated mechanically to separate and characterize the mostly liquid and solid fractions...
September 13, 2016: Environmental Technology
https://www.readbyqxmd.com/read/27595565/hemi-methylated-dna-regulates-dna-methylation-inheritance-through-allosteric-activation-of-h3-ubiquitylation-by-uhrf1
#15
Joseph S Harrison, Evan M Cornett, Dennis Goldfarb, Paul A DaRosa, Zimeng M Li, Feng Yan, Bradley M Dickson, Angela H Guo, Daniel V Cantu, Lilia Kaustov, Peter J Brown, Cheryl H Arrowsmith, Dorothy A Erie, Michael B Major, Rachel E Klevit, Krzysztof Krajewski, Brian Kuhlman, Brian D Strahl, Scott B Rothbart
The epigenetic inheritance of DNA methylation requires UHRF1, a histone- and DNA-binding RING E3 ubiquitin ligase that recruits DNMT1 to sites of newly replicated DNA through ubiquitylation of histone H3. UHRF1 binds DNA with selectivity towards hemi-methylated CpGs (HeDNA); however, the contribution of HeDNA sensing to UHRF1 function remains elusive. Here, we reveal that the interaction of UHRF1 with HeDNA is required for DNA methylation but is dispensable for chromatin interaction, which is governed by reciprocal positive cooperativity between the UHRF1 histone- and DNA-binding domains...
September 6, 2016: ELife
https://www.readbyqxmd.com/read/27556939/corrigendum-lytic-to-temperate-switching-of-viral-communities
#16
B Knowles, C B Silveira, B A Bailey, K Barott, V A Cantu, A G Cobián-Güemes, F H Coutinho, E A Dinsdale, B Felts, K A Furby, E E George, K T Green, G B Gregoracci, A F Haas, J M Haggerty, E R Hester, N Hisakawa, L W Kelly, Y W Lim, M Little, A Luque, T McDole-Somera, K McNair, L S de Oliveira, S D Quistad, N L Robinett, E Sala, P Salamon, S E Sanchez, S Sandin, G G Z Silva, J Smith, C Sullivan, C Thompson, M J A Vermeij, M Youle, C Young, B Zgliczynski, R Brainard, R A Edwards, J Nulton, F Thompson, F Rohwer
No abstract text is available yet for this article.
November 3, 2016: Nature
https://www.readbyqxmd.com/read/27539377/cognitive-reserve-as-a-modifier-of-clinical-expression-in-chronic-traumatic-encephalopathy-a-preliminary-examination
#17
Michael L Alosco, Jesse Mez, Neil W Kowall, Thor D Stein, Lee E Goldstein, Robert C Cantu, Douglas I Katz, Todd M Solomon, Patrick T Kiernan, Lauren Murphy, Bobak Abdolmohammadi, Daniel Daneshvar, Philip H Montenigro, Christopher J Nowinski, Robert A Stern, Ann C McKee
This study conducted a preliminary examination on cognitive reserve (CR) as a modifier of symptom expression in subjects with autopsy-confirmed chronic traumatic encephalopathy (CTE). The sample included 25 former professional football players neuropathologically diagnosed with CTE stage III or IV. Next of kin interviews ascertained age at cognitive and behavioral/mood symptom onset and demographic/athletic characteristics. Years of education and occupational attainment defined CR. High occupational achievement predicted later age at cognitive (p=0...
2017: Journal of Neuropsychiatry and Clinical Neurosciences
https://www.readbyqxmd.com/read/27488058/nox2-mediated-pi3k-and-cofilin-activation-confers-alternate-redox-control-of-macrophage-pinocytosis
#18
Pushpankur Ghoshal, Bhupesh Singla, Huiping Lin, Douglas M Feck, Nadiezhda Cantu-Medellin, Eric E Kelley, Stephen Haigh, David Fulton, Gábor Csányi
AIMS: Internalization of extracellular fluid and its solute by macropinocytosis requires dynamic reorganization of actin cytoskeleton, membrane ruffling, and formation of large endocytic vacuolar compartments, called macropinosomes, inside the cell. Although instigators of macropinocytosis, such as growth factors and phorbol esters, stimulate NADPH oxidase (Nox) activation and signal transduction mediators upstream of Nox assembly, including Rac1 and protein kinase C (PKC), are involved in macropinocytosis, the role of Nox enzymes in macropinocytosis has never been investigated...
September 13, 2016: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/27430424/olfactory-function-and-associated-clinical-correlates-in-former-national-football-league-players
#19
Michael L Alosco, Johnny Jarnagin, Yorghos Tripodis, Michael Platt, Brett Martin, Christine E Chaisson, Christine M Baugh, Nathan G Fritts, Robert C Cantu, Robert A Stern
Professional American football players incur thousands of repetitive head impacts (RHIs) throughout their lifetime. The long-term consequences of RHI are not well characterized, but may include olfactory dysfunction. RHI has been associated with changes to brain regions involved in olfaction, and olfactory impairment is common after traumatic brain injury. Olfactory dysfunction is a frequent early sequelae of neurodegenerative diseases (e.g., Alzheimer's disease), and RHI is associated with the neurodegenerative disease, chronic traumatic encephalopathy (CTE)...
February 15, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27335183/-initial-surgical-management-of-squamous-carcinoma-of-the-vulva
#20
Israel Salazar-Báez, Jessica E Salazar-Campos, Alhely López-Arias, Verónica Villavicencio-Valencia, Jaime Coronel-Martínez, Myrna Candelaria-Hernández, Delia Pérez-Montiel, Carlos Pérez-Plasencia, Aurora Elizabeth Rojas-García, David Cantú de León
Vulvar cancer accounts for approximately 4% of gynecological malignancies. At the Instituto Nacional de Cancerologia in Mexico it occupies the fourth place. The purpose of this study is to assess the management of squamous carcinoma of the vulva with initial surgical treatment. It is a descriptive retrospective, observational study, from January 1, 2002 to December 31, 2012. Twenty-seven patients, clinical stages I, II, or III, initial surgical management, with at least one year of follow-up were included. In 51...
May 2016: Gaceta Médica de México
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