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https://www.readbyqxmd.com/read/28093620/inflammatory-bowel-disease-and-cancer-response-due-to-anti-ctla-4-is-it-in-the-flora
#1
REVIEW
Franck Carbonnel, Emilie Soularue, Clélia Coutzac, Nathalie Chaput, Christine Mateus, Patricia Lepage, Caroline Robert
Checkpoint inhibitors blocking CTLA-4 (ipilimumab) and PD-1 (nivolumab, pembrolizumab) have transfigured our cancer treatment paradigm. However, these drugs can induce immune-related adverse events that share clinical and pathological characteristics with immune-mediated diseases. One of the most severe immune-related adverse event observed with anti-CTLA-4 is an enterocolitis that mirrors naturally occurring inflammatory bowel disease. This paper reviews the clinical, immunological, and microbiota data associated with the immune-related enterocolitis induced by the cancer immunotherapy blocking CTLA-4, ipilimumab...
January 16, 2017: Seminars in Immunopathology
https://www.readbyqxmd.com/read/28089794/a-molecular-phylogeny-reveals-the-cuban-enigmatic-genus-behaimia-as-a-new-piece-in-the-brongniartieae-puzzle-of-papilionoid-legumes
#2
Luciano Paganucci de Queiroz, Wallace São Mateus, Alfonso Delgado-Salinas, Benjamin M Torke, Gwilym P Lewis, Óscar Dorado, Julie K Ardley, Martin F Wojciechowski, Domingos Cardoso
The papilionoid legume tribe Brongniartieae comprises a collection of 13 genera with disparate morphologies that were previously positioned in at least three remotely related tribes. The Brongniartieae displays a wide geographical disjunction between Australia and the New World and previous phylogenetic studies had provided conflicting results about the relationships between the American and Australian genera. We carry out phylogenetic analyses of (1) a plastid matK dataset extensively sampled across legumes to solve the enigmatic relationship of the Cuban-endemic monospecific genus Behaimia; and (2) multilocus datasets with focus on all genera ever referred to Brongniartieae...
January 9, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28089232/prevalence-of-ischemic-heart-disease-and-associated-factors-in-patients-with-rheumatoid-arthritis-in-southern-brazil
#3
Rafael Kmiliauskis Santos Gomes, Ana Carolina Albers, Ana Isadora Pianowski Salussoglia, Ana Maria Bazzan, Luana Cristina Schreiner, Mateus Oliveira Vieira, Patrícia Giovana da Silva, Patrícia Helena Machado, Cynthia Mara da Silva, Mauro Marcelo Mattos, Moacyr Roberto Cuce Nobre
OBJECTIVE: To estimate the prevalence of ischemic heart disease and associated factors in patients with rheumatoid arthritis. METHODS: A cross-sectional study using the American College of Rheumatology diagnostic criteria in order to select patients seen at primary or secondary health care units in Blumenau, Santa Catarina, Southern Brazil, in 2014. The presence of ischemic heart disease was defined as an acute myocardial infarction with percutaneous coronary intervention or coronary artery bypass graft surgery that has occurred after diagnosis...
December 21, 2016: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28088642/anti-rage-antibody-selectively-blocks-acute-systemic-inflammatory-responses-to-lps-in-serum-liver-csf-and-striatum
#4
Juciano Gasparotto, Camila Tiefensee Ribeiro, Rafael Calixto Bortolin, Henrique Schaan Fernandes, Alexsander Alves Teixeira, Marcelo Otavio Rodrigues Guasselli, Crepin Aziz Jose O Agani, Natália Cabral Souza, Mateus Grings, Guilhian Leipnitz, Henrique Mautone Gomes, Matheus Augusto de Bittencourt Pasquali, Peter R Dunkley, Phillip W Dickson, José Claudio Fonseca Moreira, Daniel Pens Gelain
Systemic inflammation induces transient or permanent dysfunction in the brain by exposing it to soluble inflammatory mediators. The receptor for advanced glycation endproducts (RAGE) binds to distinct ligands mediating and increasing inflammatory processes. In this study we used an LPS-induced systemic inflammation model in rats to investigate the effect of blocking RAGE in serum, liver, cerebrospinal fluid (CSF) and brain (striatum, prefrontal cortex, ventral tegmental area and substantia nigra). Intraperitoneal injection of RAGE antibody (50 μg/kg) was followed after 1h by a single LPS (5 mg/kg) intraperitoneal injection...
January 11, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28079887/drp-1-is-required-for-bh3-mimetic-mediated-mitochondrial-fragmentation-and-apoptosis
#5
Mateus Milani, Dominic P Byrne, Georgia Greaves, Michael Butterworth, Gerald M Cohen, Patrick A Eyers, Shankar Varadarajan
The concept of using BH3 mimetics as anticancer agents has been substantiated by the efficacy of selective drugs, such as Navitoclax and Venetoclax, in treating BCL-2-dependent haematological malignancies. However, most solid tumours depend on MCL-1 for survival, which is highly amplified in multiple cancers and a major factor determining chemoresistance. Most MCL-1 inhibitors that have been generated so far, while demonstrating early promise in vitro, fail to exhibit specificity and potency in a cellular context...
January 12, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28073448/modeling-the-transport-pathways-of-harmful-algal-blooms-in-the-iberian-coast
#6
L Pinto, M Mateus, A Silva
The prediction of the path of harmful algal blooms (HABs) along the coast can be achieved using numerical models of ocean circulation in order to reproduce the hydrodynamics of the study area. With this setting, our work aimed at the (1) study of key past events to evaluate the model ability to reproduce the transport pathways of blooms along the Iberian coast, and (2) to assess the relevance of such strictly physical approach. The simulations described here rely on the advection of lagrangian elements after a point release in a hypothetical location for bloom initiation, and the subsequent assessment of the influence of the surface currents transport on the extent of the bloom...
March 2016: Harmful Algae
https://www.readbyqxmd.com/read/28073443/a-hab-warning-system-for-shellfish-harvesting-in-portugal
#7
A Silva, L Pinto, S M Rodrigues, H de Pablo, M Santos, T Moita, M Mateus
The development of sustainable shellfish aquaculture is highly dependent on the provision of reliable monitoring and predictive information on the occurrence of harmful algal blooms (HABs). The Portuguese HAB early warning system and shellfish closures presented here is a prototype, developed in the ASIMUTH project. It relies on weekly monitoring data composed of observations of HAB species and toxin concentrations within shellfish, and ocean circulation forecasts generated by an operational oceanographic model...
March 2016: Harmful Algae
https://www.readbyqxmd.com/read/28073436/forecasting-the-risk-of-harmful-algal-blooms
#8
EDITORIAL
Keith Davidson, Donald M Anderson, Marcos Mateus, Beatriz Reguera, Joe Silke, Marc Sourisseau, Julie Maguire
The "Applied Simulations and Integrated Modelling for the Understanding of Harmful Algal Blooms" (Asimuth) project sought to develop a harmful algal bloom (HAB) alert system for Atlantic Europe. This was approached by combining, at a national or regional level, regulatory monitoring phytoplankton and biotoxin data with satellite remote sensing and other information on current marine conditions, coupled with regional scale models that included a representation of HAB transport. Synthesis of these products was achieved by expert interpretation within HAB risk alert bulletins that were prepared on a regular basis (typically weekly) for use by the aquaculture industry...
March 2016: Harmful Algae
https://www.readbyqxmd.com/read/28054952/computer-aided-drug-design-using-sesquiterpene-lactones-as-sources-of-new-structures-with-potential-activity-against-infectious-neglected-diseases
#9
REVIEW
Chonny Herrera Acevedo, Luciana Scotti, Mateus Feitosa Alves, Margareth De Fátima Formiga Melo Diniz, Marcus Tullius Scotti
This review presents an survey to the biological importance of sesquiterpene lactones (SLs) in the fight against four infectious neglected tropical diseases (NTDs)-leishmaniasis, schistosomiasis, Chagas disease, and sleeping sickness-as alternatives to the current chemotherapies that display several problems such as low effectiveness, resistance, and high toxicity. Several studies have demonstrated the great potential of some SLs as therapeutic agents for these NTDs and the relationship between the protozoal activities with their chemical structure...
January 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28050793/glycine-administration-alters-mapk-signaling-pathways-and-causes-neuronal-damage-in-rat-brain-putative-mechanisms-involved-in-the-neurological-dysfunction-in-nonketotic-hyperglycinemia
#10
Alana Pimentel Moura, Belisa Parmeggiani, Juciano Gasparotto, Mateus Grings, Gabriela Miranda Fernandez Cardoso, Bianca Seminotti, José Cláudio Fonseca Moreira, Daniel Pens Gelain, Moacir Wajner, Guilhian Leipnitz
High glycine (GLY) levels have been suggested to induce neurotoxic effects in the central nervous system of patients with nonketotic hyperglycinemia (NKH). Since the mechanisms involved in the neuropathophysiology of NKH are not totally established, we evaluated the effect of a single intracerebroventricular administration of GLY on the content of proteins involved in neuronal damage and inflammatory response, as well as on the phosphorylation of the MAPK p38, ERK1/2, and JNK in rat striatum and cerebral cortex...
January 3, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28050410/prevalence-of-trichomonas-vaginalis-and-candida-albicans-among-brazilian-women-of-reproductive-age
#11
Mateus De Paula Glehn, Lana Cristina Evangelista Sá Ferreira, Hian Delfino Ferreira Da Silva, Eleuza Rodrigues Machado
INTRODUCTION: There are no studies assessing the simultaneous occurrence of Candida albicans (C. albicans) and Trichomonas vaginalis (T. vaginalis) in the primary health care in Brazil. Despite different conditions to establishment of each one, the co-detection of both has been reported by some authors in previous studies from other regions. AIM: To compare the prevalence of T. vaginalis and C. albicans in correlation with associated variables. MATERIALS AND METHODS: A cross-sectional study conducted in a family health clinic in the Federal District of Brazil, between November 2014 and March 2015...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28040165/antimicrobial-susceptibility-and-genetic-characterization-of-escherichia-coli-recovered-from-frozen-game-meat
#12
Rafael H Mateus-Vargas, Viktoria Atanassova, Felix Reich, Günter Klein
The increasing number of antimicrobial resistant Enterobacteriaceae both in veterinary and human medicine, the dissemination of these bacteria in several environments and their possible repercussions on human health is causing concern. Game meat is usually seen as free of antimicrobial resistant bacteria. The objective of this study was to evaluate the current antimicrobial susceptibility status in generic Escherichia coli isolated from packed frozen game meat from a game handling establishment in Germany. A total of 229 E...
May 2017: Food Microbiology
https://www.readbyqxmd.com/read/28035099/three-tetracyclic-dibenzoazepine-derivatives-exhibiting-different-molecular-conformations-different-patterns-of-intermolecular-hydrogen-bonding-and-different-modes-of-supramolecular-aggregation
#13
Jeferson B Mateus-Ruíz, Lina M Acosta Quintero, Alirio Palma, Mario A Macías, Justo Cobo, Christopher Glidewell
The biological potential of compounds of the tricyclic dibenzo[b,e]azepine system has resulted in considerable synthetic efforts to develop efficient methods for the synthesis of new derivatives of this kind. (9RS,15RS)-9-Ethyl-11-methyl-9,13b-dihydrodibenzo[c,f]thiazolo[3,2-a]azepin-3(2H)-one, C19H19NOS, (I), crystallizes as a kryptoracemate with Z' = 2 in the space group P21, with one molecule each of the (9R,15R) and (9S,15S) configurations in the asymmetric unit, while (9RS,15RS)-9-ethyl-7,12-dimethyl-9,13b-dihydrodibenzo[c,f]thiazolo[3,2-a]azepin-3(2H)-one, C20H21NOS, (II), crystallizes with Z' = 1 in the space group C2/c...
January 1, 2017: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/28032203/antioxidant-properties-of-mesenchymal-stem-cells-against-oxidative-stress-in-a-murine-model-of-colitis
#14
Fabiany da Costa Gonçalves, Mateus Grings, Natália Schneider Nunes, Fernanda Otesbelgue Pinto, Tuane Nerissa Alves Garcez, Fernanda Visioli, Guilhian Leipnitz, Ana Helena Paz
OBJECTIVE: To investigate the effects of oxidative stress injury in dextran sulfate sodium (DSS)-induced colitis in mice treated with mesenchymal stem cells (MSC). RESULTS: Mice exposed to oral administration of 2% DSS over 7 days presented a high disease activity index and an intense colonic inflammation. Systemic infusion of MSC protected from severe colitis, reducing weight loss and diarrhea while lowering the infiltration of inflammatory cells. Moreover, toxic colitis injury increased oxidative stress...
December 28, 2016: Biotechnology Letters
https://www.readbyqxmd.com/read/28031178/otitis-prone-children-produce-functional-antibodies-to-pneumolysin-and-pneumococcal-polysaccharides
#15
Lea-Ann S Kirkham, Selma P Wiertsema, Karli J Corscadden, Tulia Mateus, Gemma L Mullaney, Guicheng Zhang, Peter C Richmond, Ruth B Thornton
BACKGROUND: The pneumococcus is a major otitis media (OM) pathogen but data are conflicting on whether otitis-prone children have impaired humoral immunity to pneumococcal antigens. We and others have shown that otitis-prone and healthy children have similar antibody titres to pneumococcal proteins and polysaccharides (vaccine and non-vaccine type), however the quality of antibodies from otitis-prone children has not been investigated. Antibody function, rather than titre, is considered to better correlate with protection from pneumococcal disease...
December 28, 2016: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28029072/secondary-metabolites-from-cissampelos-a-possible-source-for-new-leads-with-anti-inflammatory-activity
#16
Mateus Feitosa Alves, Marcus Tullius Scotti, Luciana Scotti, Francisco Jaime Bezerra Mendonça Junior, José Maria Barbosa Filho, Sílvia Adelaide Linhares de Melo, Sócrates Golzio Dos Santos, Margareth de Fátima Formiga Melo Diniz
The genus Cissampelos comprises 21 species which have a wide global distribution and various pharmacological activities such as analgesic and antipyretic, anti-inflammatory, anti-allergic, bronchodilation, and immunomodulation among others. Several compounds, mainly alkaloids with differing biological activities have been isolated from this genus. We will highlight antipyretic activities, anti-inflammatory, antiallergic, bronchodilatory, and immunomodulatory activities. In addition, we applied ligand-based-virtual screening associated with structure-based-virtual screening of a small dataset of 63 secondary metabolites from the Cissampelos genus of an in-house data bank, in order to select compounds with potential anti-inflammatory activity...
December 27, 2016: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28025529/anticonvulsant-effects-of-fractions-isolated-from-dinoponera-quadriceps-kempt-ant-venom-formicidae-ponerinae
#17
Diana Aline Morais Ferreira Nôga, Luiz Eduardo Mateus Brandão, Fernanda Carvalho Cagni, Delano Silva, Dina Lilia Oliveira de Azevedo, Arrilton Araújo, Wagner Ferreira Dos Santos, Antonio Miranda, Regina Helena da Silva, Alessandra Mussi Ribeiro
Natural products, sources of new pharmacological substances, have large chemical diversity and architectural complexity. In this context, some toxins obtained from invertebrate venoms have anticonvulsant effects. Epilepsy is a neurological disorder that affects about 65 million people worldwide, and approximately 30% of cases are resistant to pharmacological treatment. Previous studies from our group show that the denatured venom of the ant Dinoponera quadriceps (Kempt) protects mice against bicuculline (BIC)-induced seizures and death...
December 23, 2016: Toxins
https://www.readbyqxmd.com/read/28025384/renal-effects-of-immune-checkpoint-inhibitors
#18
Hassan Izzedine, Christine Mateus, Céline Boutros, Caroline Robert, Philippe Rouvier, Zahir Amoura, Alexis Mathian
Recent advances in immune checkpoint inhibitor (ICPI) development have led to major improvements in oncology patient outcomes. Cytotoxic T-lymphocyte antigen 4 (CTLA-4) and programmed cell death protein 1 (PD-1) are two essential immune checkpoint receptors. Ipilimumab and tremelimumab (anti-CTLA-4-blocking antibodies) and pembrolizumab and nivolumab (antibodies targeting PD-1 receptors) have already been approved by US Food and Drug Administration in several malignancies. Two different forms of ICPI-induced renal damage have been identified, including acute (granulomatous) tubulointerstitial nephritis and immune complex glomerulonephritis...
December 26, 2016: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28010768/green-production-of-microalgae-based-silver-chloride-nanoparticles-with-antimicrobial-activity-against-pathogenic-bacteria
#19
Veronica da Silva Ferreira, Mateus Eugenio ConzFerreira, Luís Maurício T R Lima, Susana Frasés, Wanderley de Souza, Celso Sant'Anna
Silver nanoparticles are powerful antimicrobial agents. Here, the synthesis of silver chloride nanoparticles (AgCl-NPs) was consistently evidenced from a commercially valuable microalgae species, Chlorella vulgaris. Incubation of C. vulgaris conditioned medium with AgNO3 resulted in a medium color change to yellow/brown (with UV-vis absorbance at 415nm), indicative of silver nanoparticle formation. Energy-dispersive X-ray spectroscopy (EDS) of purified nanoparticles confirmed the presence of both silver and chlorine atoms, and X-ray diffraction (XRD) showed the typical pattern of cubic crystalline AgCl-NPs...
February 2017: Enzyme and Microbial Technology
https://www.readbyqxmd.com/read/28008265/prevalence-of-cardiovascular-risk-factors-among-workers-at-a-private-tertiary-center-in-angola
#20
Feliciano Chanana Paquissi, Valdano Manuel, Ana Manuel, Guiomar Lote Mateus, Bruna David, Gertrudes Béu, Anselmo Castela
BACKGROUND: The burden of cardiovascular diseases (CVD) is increasing in most countries of sub-Saharan Africa. However, as there is a scarcity of data, little is known about CVD in Angola. This study aimed to determine the prevalence of prehypertension, hypertension, prediabetes, diabetes, overweight, and obesity among workers at a private tertiary center in Angola. METHODS: A cross-sectional study was conducted among 781 workers of Clínica Girassol, a tertiary health care center in Angola, during the month of November 2013...
2016: Vascular Health and Risk Management
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