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https://www.readbyqxmd.com/read/29556745/giant-cell-tumor-of-the-rib-cage-extending-to-the-spine-case-report
#1
Juan Francisco Blanco, Marcelo Jiménez, Diego Rendón, David Pescador, Jorge Hugo Villafañe, Diego Garbossa, Pedro Berjano
PURPOSE: We present the case of a patient with a giant cell tumor of the thoracic wall that invaded the thoracic spine. MATERIAL AND METHODS: A giant cell tumor that affects the spine and the thoracic wall is very rare but can grow to a large size. We report a case of giant cell tumor of the left chest wall extending to the thoracic spine in a 28-year-old man. Positron emission tomography (PET) showed a tumor of 11 × 4 × 13 cm in size and the histopathology specimen of the first surgical procedure diagnosed a giant cell tumor...
March 19, 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29488556/-disseminated-actinomycosis-with-central-nervous-system-involvement
#2
Juan Vásquez, Carlos Gómez, Angela Chiquillo, Luz Pescador
Actinomycosis is very rare, as well as the central nervous system (CNS) condition associated with it, presenting a mortality up to 28%. Its manifestations could be similar to infectious conditions from other etiologies, thus, having a better understanding of the entity increases clinical suspicion and also it can provide a timely treatment. The clinical case of an adult with edema in an upper extremity is presented as a manifestation of thrombophlebitis and an abscessed axillary lesion, in which actinomycetes infection was confirmed...
December 2017: Revista Chilena de Infectología: órgano Oficial de la Sociedad Chilena de Infectología
https://www.readbyqxmd.com/read/29369822/remotely-controlled-fusion-of-selected-vesicles-and-living-cells-a-key-issue-review
#3
Azra Bahadori, Guillermo Moreno-Pescador, Lene B Oddershede, Poul M Bendix
Remote control over fusion of single cells and vesicles has a great potential in biological and chemical research allowing both transfer of genetic material between cells and transfer of molecular content between vesicles. Membrane fusion is a critical process in biology that facilitates molecular transport and mixing of cellular cytoplasms with potential formation of hybrid cells. Cells precisely regulate internal membrane fusions with the aid of specialized fusion complexes that physically provide the energy necessary for mediating fusion...
March 2018: Reports on Progress in Physics
https://www.readbyqxmd.com/read/29301654/the-additive-effect-of-aging-on-sepsis-induced-cognitive-impairment-and-neuroinflammation
#4
Rodrigo Olivieri, Monique Michels, Bruna Pescador, Pricila Ávila, Mariane Abatti, Luana Cucker, Henrique Burger, Diogo Dominguini, João Quevedo, Felipe Dal-Pizzol
Systemic inflammation is emerging as a significant driver of cognitive decline in the aged and vulnerable brain. In sepsis survivors animals low-grade brain inflammation occurs, suggesting that sepsis is able to induce in microglia a primed-like state. The purpose of this study is to analyze the role of sepsis-induced brain inflammation in the progression of the physiological process of brain aging. Wistar rats 2month-old were subjected to sepsis and 60 and 90days after were submitted to the new object recognition test and brain was removed to the determination of cytokines, myeloperoxidase (MPO) activity, amyloid-beta peptide (Aβ) and immunohistochemistry markers of microglial activation...
January 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29300824/winter-is-coming-plant-freezing-resistance-as-a-key-functional-trait-for-the-assembly-of-annual-mediterranean-communities
#5
David S Pescador, Ana M Sánchez, Arantzazu L Luzuriaga, Angela Sierra-Almeida, Adrián Escudero
Background and Aims: In Mediterranean annual plants, germination mainly occurs during the autumn and only those seedlings that survive winter freezing can flower and produce seedlings in spring. Surprisingly, the effect of freezing events as an abiotic determinant of these communities remains unexplored. The present study aimed to investigate how freezing events affect annual Mediterranean communities and whether their functional structure as related to freezing resistance is linked to the main biotic and abiotic determinants of these communities...
February 12, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29277420/factors-affecting-the-association-of-single-and-double-stranded-rnas-with-montmorillonite-nanoclays
#6
Archana Gujjari, Blanca V Rodriguez, Jorge Pescador, Corina Maeder, Gary W Beall, L Kevin Lewis
Montmorillonite (MMT) nanoclays exist as single and stacked sheet-like structures with large surface areas that can form stable associations with many naturally occurring biomolecules, including nucleic acids. They have been utilized successfully as vehicles for delivery of both drugs and genes into cells. Most previous studies have focused on interactions of MMT with DNA. In the current study, we have investigated the binding of small RNAs similar to those used for RNA interference (RNAi) therapy to two major forms of the clay, Na-MMT and Ca-MMT...
April 1, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29207653/melatonin-enhances-sorafenib-actions-in-human-hepatocarcinoma-cells-by-inhibiting-mtorc1-p70s6k-hif-1%C3%AE-and-hypoxia-mediated-mitophagy
#7
Néstor Prieto-Domínguez, Carolina Méndez-Blanco, Sara Carbajo-Pescador, Flavia Fondevila, Andrés García-Palomo, Javier González-Gallego, José L Mauriz
The antiangiogenic effects of sustained sorafenib treatment in hepatocellular carcinoma (HCC) lead to the occurrence of hypoxia-mediated drug resistance resulting in low therapy efficiency and negative outcomes. Combined treatments with coadjuvant compounds to target the hypoxia-inducible factor-1α (HIF-1α) represent a promising therapeutic approach through which sorafenib efficiency may be improved. Melatonin is a well-documented oncostatic agent against different cancer types. Here, we evaluated whether melatonin could enhance sorafenib cytotoxicity and overcome the hypoxia-mediated resistance mechanisms in HCC...
October 31, 2017: Oncotarget
https://www.readbyqxmd.com/read/28886447/early-life-experience-contributes-to-the-developmental-programming-of-depressive-like-behaviour-neuroinflammation-and-oxidative-stress
#8
Gislaine Z Réus, Gabrielly C Fernandes, Airam B de Moura, Ritele H Silva, Ana Caroline Darabas, Thays G de Souza, Helena M Abelaira, Celso Carneiro, Diogo Wendhausen, Monique Michels, Bruna Pescador, Felipe Dal-Pizzol, Danielle S Macêdo, João Quevedo
This study used an animal model of depression induced by maternal care deprivation (MCD) to investigate whether depressive behaviour, neuroinflammation and oxidative stress were underlying factors in developmental programming after early life stress. At postnatal days (PND) 20, 30, 40, and 60, individual subsets of animals were evaluated in behavioural tests and then euthanized to assess cytokine levels and oxidative stress parameters in the prefrontal cortex (PFC), hippocampus and serum. The results showed that MCD did not induce behavioural changes at PND 30 and 40...
December 2017: Journal of Psychiatric Research
https://www.readbyqxmd.com/read/28678794/ammonium-tetrathiomolybdate-following-ischemia-reperfusion-injury-chemistry-pharmacology-and-impact-of-a-new-class-of-sulfide-donor-in-preclinical-injury-models
#9
Alex Dyson, Felipe Dal-Pizzol, Giovanni Sabbatini, Anna B Lach, Federica Galfo, Juliano Dos Santos Cardoso, Bruna Pescador Mendonça, Iain Hargreaves, Bernardo Bollen Pinto, Daniel I Bromage, John F Martin, Kevin P Moore, Martin Feelisch, Mervyn Singer
BACKGROUND: Early revascularization of ischemic organs is key to improving outcomes, yet consequent reperfusion injury may be harmful. Reperfusion injury is largely attributed to excess mitochondrial production of reactive oxygen species (ROS). Sulfide inhibits mitochondria and reduces ROS production. Ammonium tetrathiomolybdate (ATTM), a copper chelator, releases sulfide in a controlled and novel manner, and may offer potential therapeutic utility. METHODS AND FINDINGS: In vitro, ATTM releases sulfide in a time-, pH-, temperature-, and thiol-dependent manner...
July 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28647792/regeneration-of-hyaline-cartilage-promoted-by-xenogeneic-mesenchymal-stromal-cells-embedded-within-elastin-like-recombinamer-based-bioactive-hydrogels
#10
David Pescador, Arturo Ibáñez-Fonseca, Fermín Sánchez-Guijo, Jesús G Briñón, Francisco Javier Arias, Sandra Muntión, Cristina Hernández, Alessandra Girotti, Matilde Alonso, María Consuelo Del Cañizo, José Carlos Rodríguez-Cabello, Juan Francisco Blanco
Over the last decades, novel therapeutic tools for osteochondral regeneration have arisen from the combination of mesenchymal stromal cells (MSCs) and highly specialized smart biomaterials, such as hydrogel-forming elastin-like recombinamers (ELRs), which could serve as cell-carriers. Herein, we evaluate the delivery of xenogeneic human MSCs (hMSCs) within an injectable ELR-based hydrogel carrier for osteochondral regeneration in rabbits. First, a critical-size osteochondral defect was created in the femora of the animals and subsequently filled with the ELR-based hydrogel alone or with embedded hMSCs...
August 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28609952/six-new-species-of-silk-lined-burrow-spider-genus-i-stenoterommata-i-holmberg-1881-araneae-nemesiidae-from-southern-brazil
#11
Rafael P Indicatti, João L Chavari, Maurílio Zucatelli-Júnior, Sylvia M Lucas, Antonio D Brescovit
A new diagnosis for the genus Stenoterommata Holmberg, 1881 is presented and six new species are described from Santa Catarina state, southern Brazil: S. pavesii sp. nov. and S. leticiae sp. nov. from Blumenau and Balneário Camboriú; S. sevegnaniae sp. nov. from Blumenau; S. gugai sp. nov., S. peri sp. nov. and S. pescador sp. nov. from Santa Catarina Island, Florianópolis. New records of S. palmar Goloboff, 1995 from southern Brazil are provided. Information on the natural history and habitat are included for all the species...
April 19, 2017: Zootaxa
https://www.readbyqxmd.com/read/28547207/role-of-out-of-hours-primary-care-service-in-limiting-inappropriate-access-to-emergency-department
#12
Andrea Posocco, Maria Paola Scapinello, Irene De Ronch, Francesco Castrogiovanni, Gianluca Lollo, Guglielmo Sergi, Iginio Tomaselli, Loris Tonon, Marco Solmi, Daniele Pescador, Elena Battistuz, Stefano Traversa, Vincenzo Zambianco, Nicola Veronese
Out of hours (OOH) doctors can have an important gate-keeping role over the access to the emergency department (ED), but the outcome and the quality of their ED referrals have been poorly studied. We aimed to investigate the outcome of patients referred to ED from OOH service and the determinants of admission or short-stay dispositions. We collected retrospectively data about referrals to ED from a local OOH service in the north-east of Italy using the OOH paper register and the ED electronic database, over the period of 01/10/2012 to 31/03/2013...
May 25, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28472626/key-role-of-oxidative-stress-in-animal-models-of-aminoglycoside-nephrotoxicity-revealed-by-a-systematic-analysis-of-the-antioxidant-to-nephroprotective-correlation
#13
Alfredo G Casanova, Laura Vicente-Vicente, María Teresa Hernández-Sánchez, Moisés Pescador, Marta Prieto, Carlos Martínez-Salgado, Ana I Morales, Francisco J López-Hernández
The clinical utility of aminoglycoside antibiotics is partly limited by their nephrotoxicity. Co-administration of a variety of candidate nephroprotectants has been tested at the preclinical level. According to a recent meta-analytic study, antioxidants are the only family of compounds with enough preclinical documentation to draw solid conclusions on their class nephroprotective capacity in animal models. In this study a systematic analysis of the relation between the level of antioxidation and the level of nephroprotection was performed...
June 15, 2017: Toxicology
https://www.readbyqxmd.com/read/28258001/experimental-infection-in-gerbils-by-conidiobolus-lamprauges
#14
Isabela de Godoy, Camila Gonçalves de Campos, Caroline Argenta Pescador, João Vitor Amorim Galceran, Stéfhano Luis Cândido, Valéria Dutra, Luciano Nakazato
Conidiobolomycosis is an emerging entomophthoramycosis caused by fungi Conidiobolus spp. Animal models are essential for the study of infectious disease in various areas such as pathogenesis, diagnostic methods, treatment and prevention. There is not currently an animal model for conidiobolomycosis. The aim of this study was to create an experimental infection protocol for Conidiobolus lamprauges in gerbils (Meriones unguiculatus). The study animals were randomly divided into four groups of four animals: immunosuppressed with cyclophosphamide (CPA) and infected with C...
April 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27940129/a-systematic-meta-analysis-on-the-efficacy-of-pre-clinically-tested-nephroprotectants-at-preventing-aminoglycoside-nephrotoxicity
#15
REVIEW
Laura Vicente-Vicente, Alfredo G Casanova, María Teresa Hernández-Sánchez, Moisés Pescador, Francisco J López-Hernández, Ana Isabel Morales
Nephrotoxicity limits the use of aminoglycoside antibiotics. Kidney damage is produced mainly in the renal tubule due to an inflammatory and oxidative process. At preclinical level, many drugs and natural products have been tested as prospective protectors of aminoglycoside nephrotoxicity. The main objective of this work was to make a systematic literature review of preclinical studies about aminoglycoside nephrotoxicity protection and a statistical analysis based on the meta-analysis methodology. Studies published up to January 2016 were identified...
February 15, 2017: Toxicology
https://www.readbyqxmd.com/read/27929463/synthesis-of-hierarchical-zno-cdsse-heterostructure-nanotrees
#16
Zhengxin Li, Jesus Nieto-Pescador, Alexander J Carson, Jolie C Blake, Lars Gundlach
A two-step chemical vapor deposition procedure is here employed to prepare tree-like hierarchical ZnO/CdSSe hetero-nanostructures. The structures are composed of CdSSe branches grown on ZnO nanowires that are vertically aligned on a transparent sapphire substrate. The morphology was measured via scanning electron microscopy. The crystal structure was determined by X-ray powder diffraction analysis. Both the ZnO stem and CdSSe branches have a predominantly wurtzite crystal structure. The mole ratio of S and Se in the CdSSe branches was measured by energy dispersive X-ray spectroscopy...
November 29, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27915439/presence-of-ureaplasma-diversum-in-the-genital-tracts-of-female-dairy-cattle-in-mato-grosso-state-brazil
#17
Jaqueline B Azevedo, Gustavo S Silva, Priscylla S Rocha, Letícia C Pitchenin, Valéria Dutra, Luciano Nakazato, Anderson Castro Soares de Oliveira, Caroline A Pescador
Ureaplasma diversum infection in bovine females may result in various reproductive problems, including granular vulvovaginitis, abortion, weak calves, salpingitis, and spontaneous abortion. The presence of U. diversum in a dairy bovine population from midwestern Brazil has not been established. The aim of this study was to determine whether U. diversum was present in dairy cattle from midwestern Brazil using polymerase chain reaction (PCR). Vulvovaginal mucus was analyzed from 203 cows located in six municipalities in the north region of Mato Grosso State, Brazil...
February 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/27846359/-o-arm-navigation-in-spinal-surgery-for-complex-cases
#18
D Pescador, D Rendón, J Blanco, R González, J M Martín, C Cano-Gala, D Pescador
The intraoperative computer-assisted navigation technique has evolved and changed the way we approach certain complex cases in the vertebral pathologies. The main advantages of this technique are that it increases the accuracy of the procedure, reduces its morbidity and invasiveness, diminishes the radiation dose and improves surgical protocols. In addition to the transpedicular fixation, the navigation system is useful in a high variety of pathologies such as spinal decompression or tumor resection. In the present study, we show several cases where navigation is used intraoperatively in different pathologies and their clinical outcomes...
March 2016: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/27686967/rapamycin-negatively-impacts-insulin-signaling-glucose-uptake-and-uncoupling-protein-1-in-brown-adipocytes
#19
Ester García-Casarrubios, Carlos de Moura, Ana I Arroba, Nuria Pescador, María Calderon-Dominguez, Laura Garcia, Laura Herrero, Dolors Serra, Susana Cadenas, Flavio Reis, Eugenia Carvalho, Maria Jesus Obregon, Ángela M Valverde
New onset diabetes after transplantation (NODAT) is a metabolic disorder that affects 40% of patients on immunosuppressive agent (IA) treatment, such as rapamycin (also known as sirolimus). IAs negatively modulate insulin action in peripheral tissues including skeletal muscle, liver and white fat. However, the effects of IAs on insulin sensitivity and thermogenesis in brown adipose tissue (BAT) have not been investigated. We have analyzed the impact of rapamycin on insulin signaling, thermogenic gene-expression and mitochondrial respiration in BAT...
December 2016: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/27642606/networks-models-of-actin-dynamics-during-spermatozoa-postejaculatory-life-a-comparison-among-human-made-and-text-mining-based-models
#20
Nicola Bernabò, Alessandra Ordinelli, Marina Ramal Sanchez, Mauro Mattioli, Barbara Barboni
Here we realized a networks-based model representing the process of actin remodelling that occurs during the acquisition of fertilizing ability of human spermatozoa (HumanMade_ActinSpermNetwork, HM_ASN). Then, we compared it with the networks provided by two different text mining tools: Agilent Literature Search (ALS) and PESCADOR. As a reference, we used the data from the online repository Kyoto Encyclopaedia of Genes and Genomes (KEGG), referred to the actin dynamics in a more general biological context. We found that HM_ALS and the networks from KEGG data shared the same scale-free topology following the Barabasi-Albert model, thus suggesting that the information is spread within the network quickly and efficiently...
2016: BioMed Research International
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