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https://www.readbyqxmd.com/read/28333239/small-bowel-carcinomas-in-coeliac-or-crohn-s-disease-clinico-pathological-molecular-and-prognostic-features-a-study-from-the-small-bowel-cancer-italian-consortium
#1
Alessandro Vanoli, Antonio Di Sabatino, Daniela Furlan, Catherine Klersy, Federica Grillo, Roberto Fiocca, Claudia Mescoli, Massimo Rugge, Gabriella Nesi, Paolo Fociani, Gianluca Sampietro, Sandro Ardizzone, Ombretta Luinetti, Antonio Calabrò, Francesco Tonelli, Umberto Volta, Donatella Santini, Giacomo Caio, Paolo Giuffrida, Luca Elli, Stefano Ferrero, Giovanni Latella, Antonio Ciardi, Roberto Caronna, Gaspare Solina, Aroldo Rizzo, Carolina Ciacci, Francesco P D'Armiento, Marianna Salemme, Vincenzo Villanacci, Renato Cannizzaro, Vincenzo Canzonieri, Luca Reggiani Bonetti, Livia Biancone, Giovanni Monteleone, Augusto Orlandi, Giuseppe Santeusanio, Maria C Macciomei, Renata D'Incà, Vittorio Perfetti, Giancarlo Sandri, Marco Silano, Ada M Florena, Antonino G Giannone, Claudio Papi, Luigi Coppola, Paolo Usai, Antonio Maccioni, Marco Astegiano, Paola Migliora, Rachele Manca, Michele Martino, Davide Trapani, Roberta Cerutti, Paola Alberizzi, Roberta Riboni, Fausto Sessa, Marco Paulli, Enrico Solcia, Gino R Corazza
Background and Aims.: An increased risk of small bowel carcinoma (SBC) has been reported in coeliac disease (CD) and Crohn's disease (CrD). We explored clinico-pathologic, molecular and prognostic features of CD-associated SBC (CD-SBC) and CrD-associated SBC (CrD-SBC) in comparison with sporadic SBC (spo-SBC). Methods.: Seventy-six patients undergoing surgical resection for non-familial SBC (26 CD-SBC, 25 CrD-SBC, 25 spo-SBC) were retrospectively enrolled to investigate patients' survival and histological and molecular features including microsatellite instability (MSI) and KRAS/NRAS, BRAF, PIK3CA, TP53, HER2 gene alterations...
February 24, 2017: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/28331000/biophysical-studies-of-cholesterol-effects-on-chromatin
#2
Isabel T G Silva, Vinicius Fernandes, Caio Souza, Werner Treptow, Guilherme Martins Santos
Changes in chromatin structure regulate gene expression and genome maintenance. Molecules that bind to the nucleosome, the complex of DNA and histone proteins, are key modulators of chromatin structure. Previous work indicated that cholesterol, a ubiquitous cellular lipid, may bind to chromatin in vivo, suggesting a potential function for lipids in modulating chromatin architecture. However, the molecular mechanisms of cholesterol action on chromatin structure have remained unclear. Here, we explored the biophysical impact of cholesterol on nucleosome and chromatin fibers reconstituted in vitro and characterized in silico the cholesterol binding to nucleosome...
March 22, 2017: Journal of Lipid Research
https://www.readbyqxmd.com/read/28329449/behavioural-and-neurochemical-effects-of-alpha-lipoic-acid-associated-with-omega-3-in-tardive-dyskinesia-induced-by-chronic-haloperidol-in-rats
#3
Dayane Pessoa Araújo, Thaisa Camboim, Ana Silva, Caio Fonseca, Rebeca Sousa, Mabson Barbosa, Lucidio Oliveira, José Cavalcanti, Eudes Lucena, Fausto Guzen
Tardive dyskinesia (TD) is characterized by involuntary movements of the lower portion of the face being related to typical antipsychotic therapy. TD is associated with the oxidative imbalance in the basal ganglia. Lipoic acid (LA) and omega 3 (ω-3) are antioxidants acting as enzyme cofactors, regenerating antioxidant enzymes. This study aimed to investigate behavioral and neurochemical effects of supplementation with of LA (100mg/Kg) and ω-3 (1g/Kg) in the treatment of TD-induced by chronic use haloperidol (HAL) (1mg/Kg) in rats...
March 22, 2017: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/28327386/smoking-dependent-effect-of-lpl-and-apo-ciii-genes-on-cad-risk-in-an-african-brazilian-population
#4
Edilene M Q Araújo, Caio C S Cerqueira, Laila Freitas-Santos, Claubert R Coutinho, Ana A L Barbosa, Sandra M B Sousa, Larissa O Guimarães, Lydia L S Korontai, Jamille S Oliveira, Karolline S Silva, Domingos L S Rios
No abstract text is available yet for this article.
December 2016: Atherosclerosis
https://www.readbyqxmd.com/read/28327191/real-time-in-vivo-monitoring-of-magnetic-nanoparticles-in-the-bloodstream-by-ac-biosusceptometry
#5
André G Próspero, Caio C Quini, Andris F Bakuzis, Patrícia Fidelis-de-Oliveira, Gustavo M Moretto, Fábio P F Mello, Marcos F F Calabresi, Ronaldo V R Matos, Ednaldo A Zandoná, Nícholas Zufelato, Ricardo B Oliveira, José R A Miranda
BACKGROUND: We introduce and demonstrate that the AC biosusceptometry (ACB) technique enables real-time monitoring of magnetic nanoparticles (MNPs) in the bloodstream. We present an ACB system as a simple, portable, versatile, non-invasive, and accessible tool to study pharmacokinetic parameters of MNPs, such as circulation time, in real time. We synthesized and monitored manganese doped iron oxide nanoparticles in the bloodstream of Wistar rats using two different injection protocols...
March 21, 2017: Journal of Nanobiotechnology
https://www.readbyqxmd.com/read/28325348/hydrophobic-edible-films-made-up-of-tomato-cutin-and-pectin
#6
Anny Manrich, Francys K V Moreira, Caio G Otoni, Marcos V Lorevice, Maria A Martins, Luiz H C Mattoso
Cutin is the biopolyester that protects the extracellular layer of terrestrial plants against dehydration and environmental stresses. In this work, cutin was extracted from tomato processing waste and cast into edible films having pectin as a binding agent. The influences of cutin/pectin ratio (50/50 and 25/75), film-forming suspension pH, and casting method on phase dispersion, water resistance and affinity, and thermal and mechanical properties of films were investigated. Dynamic light scattering and scanning electron microscopy revealed that cutin phase aggregation was reduced by simply increasing pH...
May 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28324781/genesis-and-properties-of-wetland-soils-by-vis-nir-swir-as-a-technique-for-environmental-monitoring
#7
José Alexandre Melo Demattê, Ingrid Horák-Terra, Raphael Moreira Beirigo, Fabrício da Silva Terra, Karina Patrícia Prazeres Marques, Caio Troula Fongaro, Alexandre Christófaro Silva, Pablo Vidal-Torrado
Wetlands are important ecosystems characterized by redoximorphic environments producing typical soil forming processes and organic carbon accumulation. Assessments and management of these areas are dependent on knowledge about soil characteristics and variability. By reflectance spectroscopy, information about soils can be obtained since their spectral behaviors are directly related to their chemical, physical, and mineralogical properties reflecting the pedogenetic processes and environment conditions. Our aims were: (a) to characterize the main soil classes of wetlands regarding their spectral behaviors in VIS-NIR-SWIR (350-2500 nm) and relate them to pedogenesis and environmental conditions, (b) to determine spectral ranges (bands) with greater expression of the main soil properties, (c) to identify spectral variations and similarities between hydromorphic soils from wetlands and other soils under different moisture conditions, and (d) to propose spectral models to quantify some chemical and physical soil properties used as environmental quality indicators...
March 18, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28323064/the-relevance-of-%C3%AE-klotho-to-the-central-nervous-system-some-key-questions
#8
REVIEW
Marina Minto Lopes-Cararo, Caio Henrique Yokoyama Mazucanti, Cristoforo Scavone, Elisa Mitiko Kawamoto, Daniel Charles Berwick
α-Klotho is well described as an anti-aging protein, with critical roles in kidney function as a transmembrane co-receptor for FGF23, and as a soluble factor in serum. α-Klotho is also expressed in the choroid plexus, where it is released into the cerebrospinal fluid. Nonetheless, α-Klotho is also expressed in the brain parenchyma. Accumulating evidence indicates that this pool of α-Klotho, which we define as brain α-Klotho, may play important roles as a neuroprotective factor and in promoting myelination, thereby supporting healthy brain aging...
March 18, 2017: Ageing Research Reviews
https://www.readbyqxmd.com/read/28300878/surgical-model-pig-ex-vivo-for-venous-dissection-teaching-in-medical-schools
#9
Milton Ignacio Carvalho Tube, Fernando Antonio Campelo Spencer-Netto, Anderson Igor Pereira de Oliveira, Arthur Cesário de Holanda, Bruno Leão Dos Santos Barros, Caio Cezar Gomes Rezende, João Pedro Guerra Cavalcanti, Marília Apolinário Batista, Josemberg Marins Campos
PURPOSE: To investigate a method for development of surgical skills in medical students simulating venous dissection in surgical ex vivo pig model. METHODS: Prospective, analytical, experimental, controlled study with four stages: selection, theoretical teaching, training and assessment. Sample of 312 students was divided into two groups: Group A - 2nd semester students; Group B - students of 8th semester. The groups were divided into five groups of 12 students, trained two hours per week in the semester...
February 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28294103/multi-scale-approach-for-strain-engineering-of-phosphorene
#10
Daniel Midtvedt, Caio Lewenkopf, Alexander Croy
A multi-scale approach for the theoretical description of deformed phosphorene is presented. This approach combines a valence-force model to relate macroscopic strain to microscopic displacements of atoms and a tight-binding model with distance-dependent hopping parameters to obtain electronic properties. The resulting self-consistent electromechanical model is suitable for large-scale modeling of phosphorene devices. We demonstrate this for the case of inhomogeneously deformed phosphorene drum, which may be used as an exciton funnel...
March 15, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28293253/can-anti-bothropstoxin-i-antibodies-discriminate-between-bothrops-jararaca-and-bothrops-jararacussu-venoms
#11
Ricardo Teixeira Araujo, Carlos Corrêa-Netto, Leonora Brazil-Más, Caio Raony Farina Silveira, Irene Fernandes, Russolina Benedeta Zingali
BACKGROUND: Snakes of the genus Bothrops, popularly known as pit vipers, are responsible for most cases of snakebite in Brazil. Within this genus, Bothrops jararacussu and B. jararaca deserve special attention due to the severity of their bites and for inhabiting densely populated areas. Regarding the treatment of snakebites by Bothrops jararacussu, questions have been raised about the effectiveness of the specific bothropic antivenom in neutralizing myotoxic effects; however, there are no accurate data for humans...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28281927/are-brazilian-cervids-at-risk-of-prion-diseases
#12
Caio Bruno Ribeiro Falcão, Isabel Luiza de Melo Nunes Freire Lima, José Maurício Barbanti Duarte, João Ricardo Mendes de Oliveira, Rodrigo Augusto Torres, Artur Maia Wanderley, José Eriton Gomes da Cunha, José Eduardo Garcia
Prion diseases are neurodegenerative fatal disorders that affect human and non-human mammals. Chronic Wasting Disease (CWD) is a prion disease of cervids regarded as a public health problem in North America, and polymorphisms at specific codons in the PRNP gene are associated with this disease. To assess the potential CWD susceptibility of South American free-ranging deer, the presence of these polymorphisms was examined in Mazama gouazoubira, Ozotoceros bezoarticus and Blastocerus dichotomus. Despite the lack of CWD reports in Brazil, the examined codons (95, 96, 116, 132, 225, and 226) of the PRNP gene showed potential CWD susceptibility in Brazilian deer...
January 2, 2017: Prion
https://www.readbyqxmd.com/read/28273273/prevalence-of-small-intestine-bacterial-overgrowth-in-patients-with-gastrointestinal-symptoms
#13
Carolina Piedade Martins, Caio Henrique Amorim Chaves, Maurício Gustavo Bravim de Castro, Isabel Cristina Gomes, Maria do Carmo Friche Passos
BACKGROUND: Small intestine bacterial overgrowth is a heterogeneous syndrome characterized by an increase in the number and/or the presence of atypical microbiota in the small intestine. The symptoms of small intestine bacterial overgrowth are unspecific, encompassing abdominal pain/distension, diarrhea and flatulence. Due to the increased cost and complexity for carrying out the jejunal aspirate, the gold standard for diagnosis of the syndrome, routinely the hydrogen (H 2 ) breath test has been used, utilizing glucose or lactulose as substrate, which is able to determine, in the exhaled air, the H 2 concentration produced from the intestinal bacterial metabolism...
February 23, 2017: Arquivos de Gastroenterologia
https://www.readbyqxmd.com/read/28253730/endoscopic-colostomy-with-percutaneous-colopexy-an-animal-feasibility-study
#14
Leonardo Alfonso Bustamante-Lopez, Marianny Sulbaran Nava, Sergio Carlos Nahas, Eduardo Guimaraes Horneaux de Moura, Caio Sergio Nahas, Carlos Frederico Sparapam Marques, Christiano Sakai, Ivan Cecconello, Paulo Sakai
BACKGROUND: Indications for colostomy in colorectal diseases are obstruction of the large bowel, such as in cancer, diverticular disease in the acute phase, post-radiotherapy enteritis, complex perirectal fistulas, anorectal trauma and severe anal incontinence. Some critically ill patients cannot tolerate an exploratory laparotomy, and laparoscopic assisted colostomy also requires general anesthesia. OBJECTIVE: To evaluate the feasibility, safety and efficacy of performing colostomy assisted by colonoscopy and percutaneous colopexy...
March 3, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28245977/panicolytic-like-effect-of-tramadol-is-mediated-by-opioid-receptors-in-the-dorsal-periaqueductal-grey
#15
Gislaine Cardoso de Souza Fiaes, Camila Marroni Roncon, Caio Cesar Sestile, Jhonatan Christian Maraschin, Rodolfo Luis Silva Souza, Mauro Porcu, Elisabeth Aparecida Audi
Tramadol is a synthetic opioid prescribed for the treatment of moderate to severe pain, acting as agonist of μ-opioid receptors and serotonin (5-HT) and noradrenaline (NE) reuptake inhibitor. This study evaluated the effects of tramadol in rats submitted to the elevated T-maze (ETM), an animal model that evaluates behavioural parameters such as anxiety and panic. Male Wistar rats were intraperitoneally (i.p.) treated acutely with tramadol (16 and 32mg/kg) and were submitted to the ETM. Tramadol (32mg/kg) promoted a panicolytic-like effect...
February 27, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28217995/iron-catalyzed-synthesis-of-oxindoles-application-to-the-preparation-of-pyrroloindolines
#16
Valquírio G Correia, Juliana C Abreu, Caio A E Barata, Leandro H Andrade
A novel and highly efficient synthetic approach to pyrroloindolines has been developed. The process is based on tandem radical addition/cyclization with inexpensive iron catalyst. This method tolerates a wide range of N-methyl-N-arylacrylamides as well carbamoyl radicals, providing access to a variety of functionalized 3,3-disubstituted oxindoles, key intermediates for many bioactive pyrroloindolines such as (±)-esermethole, (±)-deoxyeseroline, and (±)-physovenol methyl ether.
February 20, 2017: Organic Letters
https://www.readbyqxmd.com/read/28214607/real-time-liver-uptake-and-biodistribution-of-magnetic-nanoparticles-determined-by-ac-biosusceptometry
#17
Caio C Quini, André G Próspero, Marcos F F Calabresi, Gustavo M Moretto, Nicholas Zufelato, Sunil Krishnan, Diana R Pina, Ricardo B Oliveira, Oswaldo Baffa, Andris F Bakuzis, Jose R A Miranda
We describe the development of a joint in vivo/ex vivo protocol to monitor magnetic nanoparticles in animal models. Alternating current biosusceptometry (ACB) enables the assessment of magnetic nanoparticle accumulation, followed by quantitative analysis of concentrations in organs of interest. We present a study of real-time liver accumulation, followed by the assessment of sequential biodistribution using the same technique. For quantification, we validated our results by comparing all of the data with electron spin resonance (ESR)...
February 16, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28214208/reduced-immunohistochemical-expression-of-adhesion-molecules-in-vitiligo-skin-biopsies
#18
Adriane Reichert Faria, Juliana Elizabeth Jung, Caio César Silva de Castro, Lucia de Noronha
Because defects in adhesion impairment seem to be involved in the etiopathogenesis of vitiligo, this study aimed to compare the immunohistochemical expression of several adhesion molecules in the epidermis of vitiligo and non lesional vitiligo skin. Sixty-six specimens of lesional and non lesional skin from 33 volunteers with vitiligo were evaluated by immunohistochemistry using anti-beta-catenin, anti-E-cadherin, anti-laminin, anti-beta1 integrin, anti-collagen IV, anti-ICAM-1 and anti-VCAM-1 antibodies. Biopsies of vitiligo skin demonstrated a significant reduction in the expression of laminin and integrin...
December 30, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28213126/the-galactose-induced-decrease-in-phosphate-levels-leads-to-toxicity-in-yeast-models-of-galactosemia
#19
Caio M Machado, Evandro A De-Souza, Ana Luiza F V De-Queiroz, Felipe S A Pimentel, Guilherme F S Silva, Fabio M Gomes, Mónica Montero-Lomelí, Claudio A Masuda
Classic galactosemia is an inborn error of metabolism caused by deleterious mutations in the GALT gene. A number of evidences indicate that the galactose-1-phosphate accumulation observed in patient cells is a cause of toxicity in this disease. Nevertheless, the consequent molecular events caused by the galactose-1-phosphate accumulation remain elusive. Here we show that intracellular inorganic phosphate levels decreased when yeast models of classic galactosemia were exposed to galactose. The decrease in phosphate levels is probably due to the trapping of phosphate in the accumulated galactose-1-phosphate since the deletion of the galactokinase encoding gene GAL1 suppressed this phenotype...
February 14, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28212007/catalytic-enantioselective-transformations-involving-c-h-bond-cleavage-by-transition-metal-complexes
#20
Christopher G Newton, Shou-Guo Wang, Caio C Oliveira, Nicolai Cramer
The development of new methods for the direct functionalization of unactivated C-H bonds is ushering in a paradigm shift in the field of retrosynthetic analysis. In particular, the catalytic enantioselective functionalization of C-H bonds represents a highly atom- and step-economic approach toward the generation of structural complexity. However, as a result of their ubiquity and low reactivity, controlling both the chemo- and stereoselectivity of such processes constitutes a significant challenge. Herein we comprehensively review all asymmetric transition-metal-catalyzed methodologies that are believed to proceed via an inner-sphere-type mechanism, with an emphasis on the nature of stereochemistry generation...
February 17, 2017: Chemical Reviews
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