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https://www.readbyqxmd.com/read/28213871/thieno-2-3-b-pyridine-derivatives-a-new-class-of-antiviral-drugs-against-mayaro-virus
#1
Raquel Amorim, Marcelo Damião Ferreira de Meneses, Julio Cesar Borges, Luiz Carlos da Silva Pinheiro, Lucio Ayres Caldas, Claudio Cesar Cirne-Santos, Marcos Vinícius Palmeira de Mello, Alessandra Mendonça Teles de Souza, Helena Carla Castro, Izabel Christina Nunes de Palmer Paixão, Renata de Mendonça Campos, Ingrid E Bergmann, Viviana Malirat, Alice Maria Rolim Bernardino, Moacyr Alcoforado Rebello, Davis Fernandes Ferreira
Mayaro virus (MAYV) is an arthropod-borne virus and a member of the family Togaviridae, genus Alphavirus. Its infection leads to an acute illness accompanied by long-lasting arthralgia. To date, there are no antiviral drugs or vaccines against infection with MAYV and resources for the prevention or treatment of other alphaviruses are very limited. MAYV has served as a model to study the antiviral potential of several substances on alphavirus replication. In this work we evaluated the antiviral effect of seven new derivatives of thieno[2,3-b]pyridine against MAYV replication in a mammalian cell line...
February 17, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28213845/topical-formulation-containing-beeswax-based-nanoparticles-improved-in-vivo-skin-barrier-function
#2
Carla Souza, Luis Alexandre Pedro de Freitas, Patrícia Maria Berardo Gonçalves Maia Campos
Lipid nanoparticles have shown many advantages for treatment/prevention of skin disorders with damaged skin barrier function. Beeswax is a favorable candidate for the development of nanosystems in the cosmetic and dermatological fields because of its advantages for the development of products for topical application. In the present study, beeswax-based nanoparticles (BNs) were prepared using the hot melt microemulsion technique and incorporated to a gel-cream formulation. The formulation was subsequently evaluated for its rheological stability and effect on stratum corneum water content (SCWC) and transepidermal water loss (TEWL) using in vivo biophysical techniques...
February 17, 2017: AAPS PharmSciTech
https://www.readbyqxmd.com/read/28212935/dissecting-biochemical-peculiarities-of-the-atpase-activity-of-tcsub2-a-component-of-the-mrna-export-pathway-in-trypanosoma-cruzi
#3
Ize de Aguiar Bittencourt, Mariana Serpeloni, Priscila Mazzochi Hiraiwa, Tatiana de Arruda Campos Brasil de Souza, Andréa Rodrigues Ávila
The RNA helicase DEAD-box protein Sub2 (yeast)/UAP56 (mammals) is conserved across eukaryotes and is essential for mRNA export in trypanosomes. Despite the high conservation of Sub2 in lower eukaryotes such as Trypanosoma cruzi, the low conservation of other mRNA export factors raises questions regarding whether the mode of action of TcSub2 is similar to that of orthologs from other eukaryotes. Mutation of the conserved K87 residue of TcSub2 abolishes ATPase activity, showing that its ATPase domain is functional...
February 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28212307/antiretroviral-treatment-in-hiv-1-positive-mothers-neurological-implications-in-virus-free-children
#4
REVIEW
Antonio Victor Campos Coelho, Paola Maura Tricarico, Fulvio Celsi, Sergio Crovella
Since the worldwide introduction of antiretroviral therapy (ART) in human immunodeficiency virus type 1, HIV-1-positive mothers, together with HIV-1 testing prior to pregnancy, caesarian birth and breastfeeding cessation with replacement feeding, a reduction of HIV-1 mother-to-child transmission (MTCT) has been observed in the last few years. As such, an increasing number of children are being exposed in utero to ART. Several questions have arisen concerning the neurological effects of ART exposure in utero, considering the potential effect of antiretroviral drugs on the central nervous system, a structure which is in continuous development in the fetus and characterized by great plasticity...
February 15, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28211713/quantum-performance-of-thermal-machines-over-many-cycles
#5
Gentaro Watanabe, B Prasanna Venkatesh, Peter Talkner, Adolfo Del Campo
The performance of quantum heat engines is generally based on the analysis of a single cycle. We challenge this approach by showing that the total work performed by a quantum engine need not be proportional to the number of cycles. Furthermore, optimizing the engine over multiple cycles leads to the identification of scenarios with a quantum enhancement. We demonstrate our findings with a quantum Otto engine based on a two-level system as the working substance that supplies power to an external oscillator.
February 3, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28210904/acute-and-neuropathic-orofacial-antinociceptive-effect-of-eucalyptol
#6
José de Maria de Albuquerque de Melo Júnior, Marina de Barros Mamede Vidal Damasceno, Sacha Aubrey Alves Rodrigues Santos, Talita Matias Barbosa, João Ronielly Campêlo Araújo, Antonio Eufrásio Vieira-Neto, Deysi Viviana Tenazoa Wong, Roberto César Pereira Lima-Júnior, Adriana Rolim Campos
Terpenes have a wide range of pharmacological properties, including antinociceptive action. The anti-inflammatory and antinociceptive effects of eucalyptol are well established. The purpose of this study was to evaluate the antinociceptive effect of eucalyptol on acute and neuropathic orofacial pain in rodent models. Acute orofacial and corneal nociception was induced with formalin, capsaicin, glutamate and hypertonic saline in mice. In another series, animals were pretreated with capsazepine or ruthenium red to evaluate the involvement of TRPV1 receptors in the effect of eucalyptol...
February 16, 2017: Inflammopharmacology
https://www.readbyqxmd.com/read/28210634/potential-of-a-pharmacogenetic-guided-algorithm-to-predict-optimal-warfarin-dosing-in-a-high-risk-hispanic-patient-role-of-a-novel-nqo1-2-polymorphism
#7
Dagmar F Hernandez-Suarez, Karla Claudio-Campos, Javier E Mirabal-Arroyo, Bianca A Torres-Hernández, Angel López-Candales, Kyle Melin, Jorge Duconge
Deep abdominal vein thrombosis is extremely rare among thrombotic events secondary to the use of contraceptives. A case to illustrate the clinical utility of ethno-specific pharmacogenetic testing in warfarin management of a Hispanic patient is reported. A 37-year-old Hispanic Puerto Rican, non-gravid female with past medical history of abnormal uterine bleeding on hormonal contraceptive therapy was evaluated for abdominal pain. Physical exam was remarkable for unspecific diffuse abdominal tenderness, and general initial laboratory results-including coagulation parameters-were unremarkable...
October 2016: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28210286/bilastine-in-allergic-rhinoconjunctivitis-and-urticaria-a-practical-approach-to-treatment-decisions-based-on-queries-received-by-the-medical-information-department
#8
REVIEW
Amalia Leceta, Ander Sologuren, Román Valiente, Cristina Campo, Luis Labeaga
BACKGROUND: Bilastine is a safe and effective commonly prescribed non-sedating H1-antihistamine approved for symptomatic treatment in patients with allergic disorders such as rhinoconjunctivitis and urticaria. It was evaluated in many patients throughout the clinical development required for its approval, but clinical trials generally exclude many patients who will benefit in everyday clinical practice (especially those with coexisting diseases and/or being treated with concomitant drugs)...
2017: Drugs in Context
https://www.readbyqxmd.com/read/28210255/high-prevalence-of-gammaproteobacteria-in-the-sediments-of-admiralty-bay-and-north-bransfield-basin-northwestern-antarctic-peninsula
#9
Diego C Franco, Camila N Signori, Rubens T D Duarte, Cristina R Nakayama, Lúcia S Campos, Vivian H Pellizari
Microorganisms dominate most Antarctic marine ecosystems, in terms of biomass and taxonomic diversity, and play crucial role in ecosystem functioning due to their high metabolic plasticity. Admiralty Bay is the largest bay on King George Island (South Shetland Islands, Antarctic Peninsula) and a combination of hydro-oceanographic characteristics (bathymetry, sea ice and glacier melting, seasonal entrance of water masses, turbidity, vertical fluxes) create conditions favoring organic carbon deposition on the seafloor and microbial activities...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28210074/second-look-surgery-plus-hyperthermic-intraperitoneal-chemotherapy-for-patients-with-colorectal-cancer-at-high-risk-of-peritoneal-carcinomatosis-does-it-really-save-lives
#10
EDITORIAL
Delia Cortes-Guiral, Dominique Elias, Pedro Antonio Cascales-Campos, Alfredo Badía Yébenes, Ismael Guijo Castellano, Ana Isabel León Carbonero, José Ignacio Martín Valadés, Jesus Garcia-Foncillas, Damian Garcia-Olmo
The treatment of peritoneal carcinomatosis (PC) of colorectal origin with cytoreductive surgery (CRS) plus hyperthermic intraperitoneal chemotherapy (HIPEC) has a 5-year recurrence-free or cure rate of at least 16%, so it is no longer labeled as a fatal disease, and offers prolonged survival for patients with a low peritoneal carcinomatosis index. Metachronous PC of colorectal origin is so predictable that there is a model which has been used to successfully determine the individual risk of each patient. Patients at risk are clearly identified; those with the highest risk have small peritoneal nodules present in the first surgery (70% probability of developing PC), ovarian metastases (60%), perforated tumor onset or intraoperative tumor rupture (50%)...
January 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28209226/sleep-apnea-types-mechanisms-and-clinical-cardiovascular-consequences
#11
REVIEW
Shahrokh Javaheri, Ferran Barbe, Francisco Campos-Rodriguez, Jerome A Dempsey, Rami Khayat, Sogol Javaheri, Atul Malhotra, Miguel A Martinez-Garcia, Reena Mehra, Allan I Pack, Vsevolod Y Polotsky, Susan Redline, Virend K Somers
Sleep apnea is highly prevalent in patients with cardiovascular disease. These disordered breathing events are associated with a profile of perturbations that include intermittent hypoxia, oxidative stress, sympathetic activation, and endothelial dysfunction, all of which are critical mediators of cardiovascular disease. Evidence supports a causal association of sleep apnea with the incidence and morbidity of hypertension, coronary heart disease, arrhythmia, heart failure, and stroke. Several discoveries in the pathogenesis, along with developments in the treatment of sleep apnea, have accumulated in recent years...
February 21, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28207677/predictors-of-human-papillomavirus-vaccine-initiation-and-completion-among-latino-mothers-of-11-to-17-year-old-daughters-living-along-the-texas-mexico-border
#12
Daisy Y Morales-Campos, Deborah Parra-Medina
Few Texas Latino girls initiate and complete the human papillomavirus (HPV) vaccine series, but few studies have examined predictors of initiation and completion in this group. Mothers are crucial to vaccine uptake. Using self-reported data from mothers of unvaccinated girls (n = 317), we examined the association between predictors (HPV and HPV vaccine knowledge, vaccine self-efficacy) and outcomes (initiation and completion). Despite an increase in HPV and HPV vaccine knowledge from baseline to follow-up (n = 195), we found no association between the predictors and the outcomes...
April 2017: Family & Community Health
https://www.readbyqxmd.com/read/28204863/influence-of-twitching-and-swarming-motilities-on-biofilm-formation-in-pseudomonas-strains
#13
Letícia Muner Otton, Marina da Silva Campos, Karine Lena Meneghetti, Gertrudes Corção
The genus Pseudomonas mainly includes opportunistic pathogens that rely on type IV pili as an important virulence factor, which is associated with adherence and biofilm formation. Pseudomonas infections are well known to be persistent and resilient in nature largely because of the tendency of the species to form biofilms. This study aimed at analyzing environmental strains of Pseudomonas genus with respect to their ability to execute twitching and swarming motilities as well as with respect to their ability to form biofilms both in the presence as well as in the absence of furanone, a substance that has the potential to prevent the formation of biofilms...
February 15, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28202802/multi-laboratory-survey-to-evaluate-salmonella-prevalence-in-diarrheic-and-non-diarrheic-dogs-and-cats-in-the-usa-between-2012-and-2014
#14
Renate Reimschuessel, Michael Grabenstein, Jake Guag, Sarah M Nemser, Kyunghee Song, Junshan Qiu, Kristin A Clothier, Barbara A Byrne, Stanley L Marks, Kyran Cadmus, Kristy Pabilonia, Susan Sanchez, Sreekumari Rajeev, Steve Ensley, Timothy S Frana, Albert E Jergens, Kimberly H Chappell, Siddhartha Thakur, Beverly Byrum, Jing Cui, Yan Zhang, Matthew M Erdman, Shelley C Rankin, Russell Daly, Seema Das, Laura Ruesch, Sara D Lawhon, Shuping Zhang, Timothy Baszler, Dubraska Diaz-Campos, Faye Hartmann, Ogi Okwumabua
Eleven laboratories collaborated to determine the periodic prevalence of Salmonella in a population of dogs and cats in the USA visiting veterinary clinics. Fecal samples (2965) solicited from 11 geographically dispersed veterinary testing laboratories were collected in 36 states between January 2012 and April 2014 and tested using a harmonized method. The overall study prevalence of Salmonella in cats (3 of 542) was <1%. Prevalence in dogs (60 of 2422) was 2.5%. Diarrhea was present in only 55% of positive dogs; however 3...
February 15, 2017: Journal of Clinical Microbiology
https://www.readbyqxmd.com/read/28202361/pre-clinical-evaluation-of-voltage-gated-calcium-channel-blockers-derived-from-the-spider-p-nigriventer-in-glioma-progression
#15
Natália Fontana Nicoletti, Thaís Cristina Erig, Rafael Fernandes Zanin, Marcelo Ricardo Roxo, Nelson Pires Ferreira, Marcus Vinicius Gomez, Fernanda Bueno Morrone, Maria Martha Campos
This study investigated the effects of P/Q- and N-type voltage-gated calcium channel (VGCC) blockers derived from P. nigriventer in glioma progression, by means of in vitro and in vivo experiments. Glioma cells M059J, U-138MG and U-251MG were used to evaluate the antiproliferative effects of P/Q- and N-type VGCC inhibitors PhTx3-3 and Phα1β from P. nigriventer (0.3-100 pM), in comparison to MVIIC and MVIIA from C. magus (0.3-100 pM), respectively. The toxins were also analyzed in a glioma model induced by implantation of GL261 mouse cells...
February 12, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28202336/functional-connectivity-in-resting-state-as-a-phonemic-fluency-ability-measure
#16
Anna Miró-Padilla, Elisenda Bueichekú, Noelia Ventura-Campos, María-Ángeles Palomar-García, César Ávila
There is some evidence that functional connectivity (FC) measures obtained at rest may reflect individual differences in cognitive capabilities. We tested this possibility by using the FAS test as a measure of phonemic fluency. Seed regions of the main brain areas involved in this task were extracted from meta-analysis results (Wagner et al., 2014) and used for pairwise resting-state FC analysis. Ninety-three undergraduates completed the FAS test outside the scanner. A correlation analysis was conducted between the F-A-S scores (behavioral testing) and the pairwise FC pattern of verbal fluency regions of interest...
February 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28202059/cardiosphere-derived-cells-do-not-improve-cardiac-function-in-rats-with-cardiac-failure
#17
Taís Hanae Kasai-Brunswick, Andréa Rodrigues da Costa, Raiana Andrade Quintanilha Barbosa, Bruna Farjun, Fernanda Cristina Paccola Mesquita, Danúbia Silva Dos Santos, Isalira Peroba Ramos, Grazielle Suhett, Guilherme Visconde Brasil, Sandro Torrentes da Cunha, José Oscar R Brito, Juliana do Amaral Passipieri, Adriana Bastos Carvalho, Antonio Carlos Campos de Carvalho
BACKGROUND: Heart failure represents an important public health issue due to its high costs and growing incidence worldwide. Evidence showing the regenerative potential of postmitotic heart tissue has suggested the existence of endogenous cardiac stem cells in adult hearts. Cardiosphere-derived cells (CDC) constitute a candidate pool of such cardiac stem cells. Previous studies using acute myocardial infarction (MI) models in rodents demonstrated an improvement in cardiac function after cell therapy with CDC...
February 15, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28202039/immune-modulation-of-some-autoimmune-diseases-the-critical-role-of-macrophages-and-neutrophils-in-the-innate-and-adaptive-immunity
#18
REVIEW
Kely Campos Navegantes, Rafaelli de Souza Gomes, Priscilla Aparecida Tártari Pereira, Paula Giselle Czaikoski, Carolina Heitmann Mares Azevedo, Marta Chagas Monteiro
Macrophages and neutrophils are key components involved in the regulation of numerous chronic inflammatory diseases, infectious disorders, and especially certain autoimmune disease. However, little is known regarding the contribution of these cells to the pathogenesis of autoimmune disorders. Recent studies have aimed to clarify certain important factors affecting the immunogenicity of these cells, including the type and dose of antigen, the microenvironment of the cell-antigen encounter, and the number, subset, and phenotype of these cells, which can prevent or induce autoimmune responses...
February 15, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28200140/serial-volumetric-assessment-of-coronary-fibroatheroma-by-optical-frequency-domain-imaging-insights-from-the-trofi-trial
#19
Carlos M Campos, Hector M Garcia-Garcia, Javaid Iqbal, Takashi Muramatsu, Shimpei Nakatani, Jouke Dijkstra, Yoshinobu Onuma, Patrick W Serruys
No abstract text is available yet for this article.
February 14, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28199839/the-survival-of-motor-neuron-protein-acts-as-a-molecular-chaperone-for-mrnp-assembly
#20
Paul G Donlin-Asp, Claudia Fallini, Jazmin Campos, Ching-Chieh Chou, Megan E Merritt, Han C Phan, Gary J Bassell, Wilfried Rossoll
Spinal muscular atrophy (SMA) is a motor neuron disease caused by reduced levels of the survival of motor neuron (SMN) protein. SMN is part of a multiprotein complex that facilitates the assembly of spliceosomal small nuclear ribonucleoproteins (snRNPs). SMN has also been found to associate with mRNA-binding proteins, but the nature of this association was unknown. Here, we have employed a combination of biochemical and advanced imaging methods to demonstrate that SMN promotes the molecular interaction between IMP1 protein and the 3' UTR zipcode region of β-actin mRNA, leading to assembly of messenger ribonucleoprotein (mRNP) complexes that associate with the cytoskeleton to facilitate trafficking...
February 14, 2017: Cell Reports
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