Read by QxMD icon Read


Yu Zhu, Yingxin Gu, Shichong Qiao, Linyi Zhou, Junyu Shi, Hongchang Lai
Microorganisms are frequently introduced to dental implants during surgery and start the race for the surface with host cells before osseointegration occurs. The aim of the study was to endow implant surfaces with biological functions that reliably select cells over microbes. Nano-structured tantalum (Ta) has exhibited excellent compatibility. Thus, nano-structured Ta films were deposited on the sand-blasted, large grit and acid-etched (SLA) titanium by the magnetron sputtering method, thus forming hierarchical micro/nanostructured surfaces...
October 26, 2016: Journal of Biomedical Materials Research. Part A
Cinthia C Stempin, Claudia C Motrán, María P Aoki, Cristian R Falcón, Fabio M Cerbán, Laura Cervi
Macrophage plasticity is critical for controlling inflammation including those produced by helminth infections, where alternatively activated macrophages (AAM) are accumulated in tissues. AAM expressing the co-inhibitory molecule programmed death ligand 2 (PD-L2), which is capable of binding programmed death 1 (PD-1) expressed on activated T cells, have been demonstrated in different parasitic infections. However, the role of PD-L2 during F. hepatica infection has not yet been explored. We observed that F. hepatica infection or a F...
October 21, 2016: Oncotarget
Judd F Hultquist, Kathrin Schumann, Jonathan M Woo, Lara Manganaro, Michael J McGregor, Jennifer Doudna, Viviana Simon, Nevan J Krogan, Alexander Marson
New genetic tools are needed to understand the functional interactions between HIV and human host factors in primary cells. We recently developed a method to edit the genome of primary CD4(+) T cells by electroporation of CRISPR/Cas9 ribonucleoproteins (RNPs). Here, we adapted this methodology to a high-throughput platform for the efficient, arrayed editing of candidate host factors. CXCR4 or CCR5 knockout cells generated with this method are resistant to HIV infection in a tropism-dependent manner, whereas knockout of LEDGF or TNPO3 results in a tropism-independent reduction in infection...
October 25, 2016: Cell Reports
Eloi R Verrier, Che C Colpitts, Charlotte Bach, Laura Heydmann, Laetitia Zona, Fei Xiao, Christine Thumann, Emilie Crouchet, Raphaël Gaudin, Camille Sureau, François-Loïc Cosset, Jane A McKeating, Patrick Pessaux, Yujin Hoshida, Catherine Schuster, Mirjam B Zeisel, Thomas F Baumert
Chronic hepatitis B, C, and D virus (HBV, HCV, and HDV) infections are the leading causes of liver disease and cancer worldwide. Recently, the solute carrier and sodium taurocholate co-transporter NTCP has been identified as a receptor for HBV and HDV. Here, we uncover NTCP as a host factor regulating HCV infection. Using gain- and loss-of-function studies, we show that NTCP mediates HCV infection of hepatocytes and is relevant for cell-to-cell transmission. NTCP regulates HCV infection by augmenting the bile-acid-mediated repression of interferon-stimulated genes (ISGs), including IFITM3...
October 25, 2016: Cell Reports
Uri Landes, Alon Barsheshet, Ariel Finkelstein, Victor Guetta, Abid Assali, Amir Halkin, Hanna Vaknin-Assa, Amit Segev, Tamir Bental, Jeremy Ben-Shoshan, Israel M Barbash, Ran Kornowski
BACKGROUND: About a decade past the first transcatheter aortic valve implantation (TAVI), data are limited regarding temporal trends accompanying its evolution from novel technology to mainstream therapy. We evaluated these trends in a large multicenter TAVI registry. HYPOTHESIS: TAVI is changing and improving with time. METHODS: Patients who underwent TAVI between January 2008 and December 2014 at 3 high-volume Israeli centers were divided into 5 time quintiles according to procedure date...
October 26, 2016: Clinical Cardiology
Akiko Harada, Junji Uchino, Taishi Harada, Noriaki Nakagaki, Junko Hisasue, Masaki Fujita, Koichi Takayama
Malignant mesothelioma (MM) incidence is increasing drastically worldwide as an occupational disease resulting from asbestos exposure. However, no curative treatment for MM of advanced stage is available. Thus, new therapeutic approaches for MM are required. Because malignant pleural mesothelioma (MPM) cells spread along the pleural surface in most patients, MPM can be targeted using intrapleural therapeutic approaches. In this study, we investigated the effectiveness of the intrapleural instillation of a replication-competent adenovirus as an oncolytic agent against MPM...
October 26, 2016: Cancer Science
Alexander P Decilveo, Bartlomiej W Szczech, Jacob Topfer, James C Wittig
Expandable endoprostheses have become an acceptable modality to address the issue of limb-length inequality in limb-sparing procedures for skeletally immature patients afflicted with lower extremity bone sarcomas. This study retrospectively analyzed postoperative outcomes and complications for 7 patients (8 limbs) who underwent minimally invasive or noninvasive reconstruction during a 12-year period. Musculoskeletal Tumor Society (MSTS) scores and complication rates were reported. Mean functional outcome (MSTS scores) at final follow-up was 93...
October 25, 2016: Orthopedics
Ryan A Durfee, Scott A Sabo, G Douglas Letson, Odion Binitie, David Cheong
Metastatic lesions of the acetabulum can be painful and debilitating. First-line treatment is multimodal and consists of disease-specific chemotherapy, osteoclastic inhibitors, analgesics, and radiation therapy. When these therapies fail, surgical intervention usually is indicated and varies from regional defect stabilization to large periacetabular reconstructions that are demanding procedures with high rates of complications. Percutaneous cement augmentation (acetabuloplasty) of lesions in selected patients has been explored as a less invasive method of lesional control...
October 25, 2016: Orthopedics
L P Zanaga, N Miotto, L C Mendes, R S B Stucchi, A G Vigani
Hepatitis C virus (HCV) genotype 3 is responsible for 30.1% of chronic hepatitis C infection cases worldwide. In the era of direct-acting antivirals, these patients have become one of the most challenging to treat, due to fewer effective drug options, higher risk of developing cirrhosis and hepatocellular carcinoma and lower sustained virological response (SVR) rates. Currently there are 4 recommended drugs for the treatment of HCV genotype 3: pegylated interferon (PegIFN), sofosbuvir (SOF), daclatasvir (DCV) and ribavirin (RBV)...
October 24, 2016: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
Decio Brunoni, Silvana Maria Blascovi-Assis, Ana Alexandra Caldas Osório, Alessandra Gotuzo Seabra, Cibelle Albuquerque de la Higuera Amato, Maria Cristina Triguero Veloz Teixeira, Marina Monzani da Rocha, Luiz Renato Rodrigues Carreiro
The present study aimed to present an overview of recent national and international research on the Zika virus (ZIKV), as well as to explore possible action plans focused on children, their families and the health teams involved.Therefore, the study proposes the implementation of tracking systems in order to identify, describe and characterize the potential correlates of prenatal exposure to ZIKV, divided into three lines of action: 1. Diagnostic and etiological evaluation as well as screening of developmental problems in children confirmed or suspected of prenatal ZIKV infection...
October 2016: Ciência & Saúde Coletiva
Jamilly da Silva Aragão, Inacia Sátiro Xavier de França, Alexsandro Silva Coura, Carla Campos Muniz Medeiros, Bertha Cruz Enders
Objective: to analyze the conditions that enhance the dimensions of individual, social and programmatic vulnerability associated with sexually transmitted infections in physically disabled people. Methods: this transversal study, with a quantitative approach, was conducted in 2015 in conjunction with an association for disabled people in Campina Grande, PB, Brazil. Ninety-eight individuals participated in the study and answered a questionnaire regarding the dimensions of vulnerability in relation to sexually transmitted infections...
October 2016: Ciência & Saúde Coletiva
Álvaro Francisco Lopes de Sousa, Artur Acelino Francisco Luz Nunes Queiroz, Layze Braz de Oliveira, Maria Eliete Batista Moura, Odinéa Maria Amorim Batista, Denise de Andrade
Objective: to understand the biosecurity social representations by primary care nursing professionals and analyze how they articulate with quality of care. Methods: exploratory and qualitative research based on social representation theory. The study participants were 36 nursing workers from primary health care in a state capital in the Northeast region of Brazil. The data were analyzed by descending hierarchical classification. Results: five classes were obtained: occupational accidents suffered by professionals; occupational exposure to biological agents; biosecurity management in primary health care; the importance of personal protective equipment; and infection control and biosecurity...
September 2016: Revista Brasileira de Enfermagem
Sérgio Ferreira de Lima, Mayara Mansur Fernandes Tavares, Jamilly Lopes de Macedo, Renata Santos de Oliveira, Sandra de Andrade Heráclio, Maria de Mascena Diniz Maia, Paulo Roberto Eleutério de Souza, Ronald Moura, Sergio Crovella
Human papillomavirus (HPV) infections are strongly associated with the development of cervical intraepithelial neoplasias and invasive cervical cancer. Polymorphisms in cytokine-encoding genes and behavioural cofactors could play an important role in protecting an individual against viral infections and cancer. Here, we investigated whether IL-6 -174 G>C, IL-8 +396 G>T, and TGF-β1 +869 G>C and +915 G>C polymorphisms were associated with susceptibility to HPV infection in women from north-east (Pernambuco) Brazil...
October 24, 2016: Memórias do Instituto Oswaldo Cruz
Pablo Guardado-Calvo, Eduardo A Bignon, Eva Stettner, Scott Allen Jeffers, Jimena Pérez-Vargas, Gerard Pehau-Arnaudet, M Alejandra Tortorici, Jean-Luc Jestin, Patrick England, Nicole D Tischler, Félix A Rey
Hantaviruses are zoonotic viruses transmitted to humans by persistently infected rodents, giving rise to serious outbreaks of hemorrhagic fever with renal syndrome (HFRS) or of hantavirus pulmonary syndrome (HPS), depending on the virus, which are associated with high case fatality rates. There is only limited knowledge about the organization of the viral particles and in particular, about the hantavirus membrane fusion glycoprotein Gc, the function of which is essential for virus entry. We describe here the X-ray structures of Gc from Hantaan virus, the type species hantavirus and responsible for HFRS, both in its neutral pH, monomeric pre-fusion conformation, and in its acidic pH, trimeric post-fusion form...
October 2016: PLoS Pathogens
Solveig Langsrud, Katrin Steinhauer, Sonja Lüthje, Klaus Weber, Peter Goroncy-Bermes, Askild L Holck
Preservatives are added to cosmetics to protect the consumers from infections and prevent product spoilage. The concentration of preservatives should be kept as low as possible and this can be achieved by adding potentiating agents. The aim of the study was to investigate the mechanisms behind potentiation of the bactericidal effect of a commonly used preservative, 2-phenoxyethanol (PE), by the potentiating agent ethylhexylglycerin (EHG). Sub-lethal concentrations of EHG (0.075%) and PE (0.675%) in combination led to rapid killing of E...
2016: PloS One
Layla Gomes Siravenha, Leonardo Quintão Siravenha, Lucimar Di Paula Madeira, Aldemir B Oliveira-Filho, Luiz Fernando Almeida Machado, Rosimar Neris Martins Feitosa, Antonio Carlos Rosário Vallinoto, Marluísa de Oliveira Guimarães Ishak, Ricardo Ishak
: The dental pulp is a sterile highly vascularized tissue and has been commonly used as a biological material to detect the genome of infectious agents that reach the dental tissue. Indeed, the pulp is also used to reveal past and ancient infections in the field of paleomicrobiology. The present study aimed to detect the presence of Hepatitis C virus (HCV) in a small community (approximately 400 inhabitants) in the Amazon region of Brazil (Nossa Senhora do Perpetuo Socorro, Vizeu, Para, Brazil) and standardize a technique for the detection of the virus in the dental pulp...
2016: PloS One
Jin Qi, Peng Zhang, Yanan Wang, Hao Chen, Yumin Li
BACKGROUND/AIMS: Total gastrectomy (TG) has shown to be superior regarding low risk of recurrence and readmission to distal subtotal gastrectomy (DG) for treatment of distal stomach cancer, but the incidence of postoperative morbidity and mortality in TG cannot be ignored. Therefore, we performed a meta-analysis to compare the effectiveness between TG and DG for distal stomach cancer. METHODOLOGY: A search in PubMed, EMBASE, the Cochrane Library, Web of Science, Chinese Biomedical Database through January 2016 was performed...
2016: PloS One
Andrew D Haddow, Farooq Nasar, Hilda Guzman, Alongkot Ponlawat, Richard G Jarman, Robert B Tesh, Scott C Weaver
BACKGROUND: Zika virus (ZIKV) has extended its known geographic distribution to the New World and is now responsible for severe clinical complications in a subset of patients. While substantial genetic and vector susceptibility data exist for ZIKV, less is known for the closest related flavivirus, Spondweni virus (SPONV). Both ZIKV and SPONV have been known to circulate in Africa since the mid-1900s, but neither has been genetically characterized by gene and compared in parallel. Furthermore, the susceptibility of peridomestic mosquito species incriminated or suspected in the transmission of ZIKV to SPONV was unknown...
October 2016: PLoS Neglected Tropical Diseases
James Weger-Lucarelli, Claudia Rückert, Nunya Chotiwan, Chilinh Nguyen, Selene M Garcia Luna, Joseph R Fauver, Brian D Foy, Rushika Perera, William C Black, Rebekah C Kading, Gregory D Ebel
In 2015, Zika virus (ZIKV; Flaviviridae; Flavivirus) emerged in the Americas, causing millions of infections in dozens of countries. The rapid spread of the virus and the association with disease outcomes such as Guillain-Barré syndrome and microcephaly make understanding transmission dynamics essential. Currently, there are no reports of vector competence (VC) of American mosquitoes for ZIKV isolates from the Americas. Further, it is not clear whether ZIKV strains from other genetic lineages can be transmitted by American Aedes aegypti populations, and whether the scope of the current epidemic is in part facilitated by viral factors such as enhanced replicative fitness or increased vector competence...
October 2016: PLoS Neglected Tropical Diseases
Athumani M Ramadhani, Tamsyn Derrick, David Macleod, Martin J Holland, Matthew J Burton
BACKGROUND: Trachoma is a blinding disease, initiated in early childhood by repeated conjunctival infection with the obligate intracellular bacterium Chlamydia trachomatis. The population prevalence of the clinical signs of active trachoma; ''follicular conjunctivitis" (TF) and/or ''intense papillary inflammation" (TI), guide programmatic decisions regarding the initiation and cessation of mass drug administration (MDA). However, the persistence of TF following resolution of infection at both the individual and population level raises concerns over the suitability of this clinical sign as a marker for C...
October 2016: PLoS Neglected Tropical Diseases
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"