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https://www.readbyqxmd.com/read/28726387/aryl-substituted-ruthenium-ii-complexes-a-strategy-for-enhanced-photocleavage-and-efficient-dna-binding
#1
Felipe Diógenes Abreu, Tercio de F Paulo, Marcelo H Gehlen, Rômulo A Ando, Luiz G F Lopes, Ana Cláudia S Gondim, Mayron A Vasconcelos, Edson H Teixeira, Eduardo Henrique Silva Sousa, Idalina Maria Moreira de Carvalho
Ruthenium polypyridine complexes have shown promise as agents for photodynamic therapy (PDT) and tools for molecular biology (chromophore-assisted light inactivation). To accomplish these tasks, it is important to have at least target selectivity and great reactive oxygen species (ROS) photogeneration: two properties that are not easily found in the same molecule. To prepare such new agents, we synthesized two new ruthenium complexes that combine an efficient DNA binding moiety (dppz ligand) together with naphthyl-modified (1) and anthracenyl-modified (2) bipyridine as a strong ROS generator bound to a ruthenium complex...
July 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28709705/phase-ii-trial-of-neoadjuvant-chemotherapy-followed-by-chemoradiation-in-locally-advanced-cervical-cancer
#2
Carla Rameri Alexandre Silva de Azevedo, Luiz Cláudio Santos Thuler, Maria Júlia Gonçalves de Mello, Jurema Telles de Oliveira Lima, Ana Luiza Fassizoli da Fonte, Diógenes Fernando Santos Fontão, Vandré Cabral Gomes Carneiro, Tien Man Cabral Chang, Carlos Gil Ferreira
OBJECTIVE: Cervical cancer is a global public health challenge. Since 1999, platin based chemoradiation (CRT) is the standard treatment for those patients with locally advanced disease. However, this population still has a dismal prognosis and, alternatives approaches such as adjuvant chemotherapy are controversial, especially because of increased toxicity. Neoadjuvant chemotherapy (NACT) could be an option for more intensive treatment with manageable toxicity. METHODS: A phase II, prospective, non-randomized trial was conducted at a reference center in Recife, Brazil...
July 11, 2017: Gynecologic Oncology
https://www.readbyqxmd.com/read/28693884/the-flavonoid-rutin-modulates-microglial-macrophage-activation-to-a-cd150-cd206-m2-phenotype
#3
Alessandra Bispo da Silva, Paulo Lucas Cerqueira Coelho, Jessika Alves Oliveira Amparo, Monique Marylin Alves de Almeida Carneiro, Julita Maria Pereira Borges, Cleide Dos Santos Souza, Maria de Fátima Dias Costa, Miriam Mecha, Carmen Guaza Rodriguez, Victor Diogenes Amaral da Silva, Silvia Lima Costa
Rutin is a glycosylated flavonoid present in many fruits and plants that has been demonstrated to have anti-inflammatory and antioxidant properties. However, little is known about the mechanisms underlying microglial activation and its effects on the regulation of cytokines and chemokines associated with inflammatory responses in the central nervous system. In this study we examined the effect of rutin on resting or lipopolysaccharide (LPS)-stimulated microglia and characterized their modulation to an activated M1 phenotype or an alternatively activated M2 phenotype...
July 8, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/28679551/pretreatment-fasting-plasma-glucose-and-insulin-modify-dietary-weight-loss-success-results-from-3-randomized-clinical-trials
#4
Mads F Hjorth, Christian Ritz, Ellen E Blaak, Wim Hm Saris, Dominique Langin, Sanne Kellebjerg Poulsen, Thomas Meinert Larsen, Thorkild Ia Sørensen, Yishai Zohar, Arne Astrup
Background: Which diet is optimal for weight loss and maintenance remains controversial and implies that no diet fits all patients.Objective: We studied concentrations of fasting plasma glucose (FPG) and fasting insulin (FI) as prognostic markers for successful weight loss and maintenance through diets with different glycemic loads or different fiber and whole-grain content, assessed in 3 randomized trials of overweight participants.Design: After an 8-wk weight loss, participants in the DiOGenes (Diet, Obesity, and Genes) trial consumed ad libitum for 26 wk a diet with either a high or a low glycemic load...
July 5, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28673458/performance-endoparasitary-control-and-blood-values-of-ewes-locally-adapted-in-semiarid-region
#5
Josiel Borges Ferreira, Ana Carla Diógenes Suassuna Bezerra, Magda Maria Guilhermino, Jacinara Hody Gurgel Morais Leite, Wilma Emanuela da Silva, Renato Diógenes Macedo Paiva, Tallysson Nogueira Barbosa, José Ernandes Rufino de Sousa, Débora Andréa Evangelista Façanha
This study evaluated the variation in the prevalence of endoparasitoses and their impact on body condition and blood values of sheep of the Morada Nova breed. A total of 138 ewes were examined for their morphology (body weight, BW; body condition score, BCS), parasitology (faecal egg count, FEC; Famacha© score; coproculture), hematology (red blood cell count,RBC); hemoglobin concentration, HE; packet cell volume, PCV; mean corpuscular volume, MCV,; mean corpuscular hemoglobin, MCH; mean corpuscular hemoglobin concentration, MCHC; leukocytes, WBC) and serum biochemistry (glucose, cholesterol, triglycerides, urea, creatinine, total protein, albumin, globulin, AST and ALT)...
June 2017: Comparative Immunology, Microbiology and Infectious Diseases
https://www.readbyqxmd.com/read/28660777/diogenes-syndrome-in-frontotemporal-dementia
#6
Catherine M Finney, Mario F Mendez
Diogenes syndrome refers to the combination of extreme self-neglect and excessive collecting with clutter and squalor, which is often present in patients with dementia. Diogenes syndrome may be particularly common in behavioral variant frontotemporal dementia (bvFTD), and the investigation of these patients may help clarify the nature of this syndrome. We describe 5 patients with bvFTD who exhibited a decline in self-care accompanied by hoarding behaviors. These patients, and a review of the literature, suggest a combination of frontal lobe disturbances: loss of insight or self-awareness with a failure to clean up or discard, a general compulsive drive, and an innate impulse to take environmental items...
January 1, 2017: American Journal of Alzheimer's Disease and Other Dementias
https://www.readbyqxmd.com/read/28658335/invasive-ductal-carcinoma-relationship-between-pathological-characteristics-and-the-presence-of-axillary-metastasis-in-220-cases
#7
Ranniere Gurgel Furtado DE Aquino, Paulo Henrique Diógenes Vasques, Diane Isabelle Magno Cavalcante, Ayane Layne DE Sousa Oliveira, Bruno Masato Kitagawa DE Oliveira, Luiz Gonzaga Porto Pinheiro
Objective: to analyze the relation of anatomopathological features and axillary involvement in cases of invasive ductal carcinoma. Methods: this is a cross-sectional study of 220 breast cancer patients submitted to radical mastectomy or quadrantectomy with axilar emptying, from the Mastology Service of the Assis Chateaubriand Maternity School, Ceará, Brazil. We submitted the tumors to histological processing and determined the histological (HG), tubular (TG) and nuclear (NG) grades, and the mitotic index (MI) by the classification of Scarff-Bloom-Richadson, verified the presence of angiolymphatic invasion (AI) and measured the largest tumor diameter (TD)...
March 2017: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/28644941/the-use-of-the-cup-of-diogenes-and-ok-approach-for-carpal-tunnel-surgery
#8
Ahmadreza Afshar
No abstract text is available yet for this article.
July 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28589464/epsp-synthase-flexibility-is-determinant%C3%A2-to-its-function-computational-molecular-dynamics-and-metadynamics-studies
#9
Luís Fernando Saraiva Macedo Timmers, Antônio M S Neto, Rinaldo W Montalvão, Luiz A Basso, Diógenes S Santos, Osmar Norberto de Souza
Flexibility is involved in a wide range of biological processes, such as protein assembly and binding recognition. EPSP synthase is an enzyme that must undergo a large conformational change to accommodate its ligands into its binding cavity. However, although the structure of EPSP synthase has been determined, its plasticity has not been explored in depth. Therefore, in this work, we extensively examined the influence of the flexibility of Mycobacterium tuberculosis EPSP (MtEPSP) synthase on the function of this protein using classical and replica-exchange metadynamics simulations...
July 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28587910/evaluation-of-tetrodotoxins-in-puffer-fish-caught-along-the-mediterranean-coast-of-spain-toxin-profile-of-lagocephalus-sceleratus
#10
Maria Rambla-Alegre, Laia Reverté, Vanessa Del Río, Pablo de la Iglesia, Oscar Palacios, Cintia Flores, Josep Caixach, Katrina Campbell, Christopher T Elliott, Andrés Izquierdo-Muñoz, Mònica Campàs, Jorge Diogène
Although consumption of Tetraodontidae species is prohibited in the EU, intoxications are still reported. The evaluation of tetrodotoxins (TTXs) by mass spectrometry (LC-MS/MS and LC-HRMS) and a screening immunoassay (mELISA) in tetraodontid fishes caught along the Western Mediterranean Sea revealed high concentrations of TTXs in Lagocephalus sceleratus while no TTXs were identified in L. lagocephalus and Sphoeroides pachygaster individuals. The high TTXs content found in the L. sceleratus analysed herein demonstrate the occurrence of highly toxic puffer fish in the Western Mediterranean Sea...
June 3, 2017: Environmental Research
https://www.readbyqxmd.com/read/28578888/comparative-evaluation-of-chemotactic-factor-effect-on-migration-and-differentiation-of-stem-cells-of-the-apical-papilla
#11
Sara Fayazi, Koyo Takimoto, Anibal Diogenes
INTRODUCTION: Cell homing strategies could potentially be used in regenerative endodontic procedures (REPs) to promote the progressive coronal migration of stem cells, including stem cells of the apical papilla (SCAPs), along with formation of a new vascular network without the need for intentional apical trauma and intracanal bleeding. Although many chemotactic factors have been investigated for different mesenchymal stem cells, their effect on SCAP migration and differentiation is not fully understood...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28577961/histologic-evaluation-of-regenerative-endodontic-procedures-with-the-use-of-chitosan-scaffolds-in-immature-dog-teeth-with-apical-periodontitis
#12
Paulo J Palma, João C Ramos, João B Martins, Anibal Diogenes, Maria H Figueiredo, Paula Ferreira, Carlos Viegas, João M Santos
INTRODUCTION: The aim of this study was to evaluate histologically the newly formed tissues after regenerative endodontic procedures (REPs) in dogs using either a blood clot (BC) or 2 different formulations of a chitosan hydrogel as scaffolds. METHODS: Apical periodontitis was induced by inoculating immature teeth with oral plaque in 4 beagle dogs. Teeth (n = 96) were divided into 2 control (n = 20) and 4 test groups (n = 76) according to the treatment: apexification and REPs with BC, sodium hyaluronate:chitosan (HA:CS) scaffolds, or pectin:chitosan (P:CS) scaffolds...
May 31, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28577494/antibacterial-modulatory-activity-of-antibiotics-and-toxicity-from-rhinella-jimi-stevaux-2002-anura-bufonidae-glandular-secretions
#13
Débora Lima Sales, Maria Flaviana Bezerra Morais-Braga, Antonia Thassya Lucas Dos Santos, Antonio Judson Targino Machado, João Antonio de Araujo Filho, Diógenes de Queiroz Dias, Francisco Assis Bezerra da Cunha, Rogério de Aquino Saraiva, Irwin Rose Alencar de Menezes, Henrique Douglas Melo Coutinho, José Galberto Martins Costa, Felipe Silva Ferreira, Rômulo Romeu da Nóbrega Alves, Waltécio de Oliveira Almeida
The increase in microorganisms with resistance to medications has caused a strong preoccupation within the medical and scientific community. Animal toxins studies, such as parotoid glandular secretions from amphibians, possesses a great potential in the development of drugs, such as antimicrobials, as these possess bioactive compounds. It was evaluated Rhinella jimi (Stevaux, 2002) glandular secretions against standard and multi-resistant bacterial strains; the effect of secretions combined with drugs; and determined the toxicity using two biologic in vivo models, and a in vitro model with mice livers...
August 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28538774/influence-of-the-ventilatory-mode-on-acute-adverse-effects-and-facial-thermography-after-noninvasive-ventilation
#14
Suzy Maria Montenegro Pontes, Luiz Henrique de Paula Melo, Nathalia Parente de Sousa Maia, Andrea da Nóbrega Cirino Nogueira, Thiago Brasileiro Vasconcelos, Eanes Delgado Barros Pereira, Vasco Pinheiro Diógenes Bastos, Marcelo Alcantara Holanda
Objective: To compare the incidence and intensity of acute adverse effects and the variation in the temperature of facial skin by thermography after the use of noninvasive ventilation (NIV). Methods: We included 20 healthy volunteers receiving NIV via oronasal mask for 1 h. The volunteers were randomly divided into two groups according to the ventilatory mode: bilevel positive airway pressure (BiPAP) or continuous positive airway pressure (CPAP). Facial thermography was performed in order to determine the temperature of the face where it was in contact with the mask and of the nasal dorsum at various time points...
March 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28514833/antinociceptive-effect-of-%C3%AE-bisabolol-in-nanocapsules
#15
Gisele Façanha Diógenes Teixeira, Antonio Eufrásio Vieira-Neto, Flávio Nogueira da Costa, Angelo Roncalli Alves E Silva, Adriana Rolim Campos
This study aimed to develop and to evaluate the antinociceptive effect of a drug delivery system containing (-)-α-bisabolol (BISA). Nanocapsules containing BISA (BISA-NC) were prepared using acetylated galatomannan. Particle size distribution was determined by atomic force microscopy, zeta potential measurement and photon correlation spectroscopy. Corneal nociception was induced by topical application of 5M NaCl and the nociceptive behavior was characterized by eye wiping in mice. Molecular docking was conducted on the TRPV1 channel...
July 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28507514/markovian-analysis-of-the-sequential-behavior-of-the-spontaneous-spinal-cord-dorsum-potentials-induced-by-acute-nociceptive-stimulation-in-the-anesthetized-cat
#16
Mario Martin, Javier Béjar, Gennaro Esposito, Diógenes Chávez, Enrique Contreras-Hernández, Silvio Glusman, Ulises Cortés, Pablo Rudomín
In a previous study we developed a Machine Learning procedure for the automatic identification and classification of spontaneous cord dorsum potentials (CDPs). This study further supported the proposal that in the anesthetized cat, the spontaneous CDPs recorded from different lumbar spinal segments are generated by a distributed network of dorsal horn neurons with structured (non-random) patterns of functional connectivity and that these configurations can be changed to other non-random and stable configurations after the noceptive stimulation produced by the intradermic injection of capsaicin in the anesthetized cat...
2017: Frontiers in Computational Neuroscience
https://www.readbyqxmd.com/read/28468666/cat-rodent-toxoplasma-gondii-type-ii-variant-circulation-and-limited-genetic-diversity-on-the-island-of-fernando-de-noronha-brazil
#17
Jean Carlos Ramos Silva, Fernando Ferreira, Ricardo Augusto Dias, Daniel Ajzenberg, Maria Fernanda Vianna Marvulo, Fernando Jorge Rodrigues Magalhães, Carlos Diógenes Ferreira Lima Filho, Solange Oliveira, Herbert Sousa Soares, Thais Ferreira Feitosa, Juliana Aizawa, Leucio Câmara Alves, Rinaldo Aparecido Mota, Jitender Prakask Dubey, Solange Maria Gennari, Hilda Fátima Jesus Pena
BACKGROUND: In Brazil, studies on animals and humans in mainland areas have shown that most strains of Toxoplasma gondii are pathogenic to mice and exhibit great genetic variability. RESULTS: In this study, using a set of 11 PCR-RFLP and 15 microsatellite markers, we isolated and genetically characterised T. gondii strains from one cat and three rats on Fernando de Noronha Island. The cat had antibodies to T. gondii, which were revealed using a modified agglutination test (MAT, cut-off 1:25) and the seroprevalence among the 46 rodents was 15...
May 3, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28444062/prognostic-value-of-coronary-flow-reserve-obtained-on-dobutamine-stress-echocardiography-and-its-correlation-with-target-heart-rate
#18
José Sebastião de Abreu, Eduardo Arrais Rocha, Isadora Sucupira Machado, Isabelle O Parahyba, Thais Brito Rocha, Fernando José Villar Nogueira Paes, Tereza Cristina Pinheiro Diogenes, Marília Esther Benevides de Abreu, Ana Gardenia Liberato Ponte Farias, Marcia Maria Carneiro, José Nogueira Paes
Background: Normal coronary flow velocity reserve (CFVR) (≥ 2) obtained in the left anterior descending coronary artery (LAD) from transthoracic echocardiography is associated with a good prognosis, but there is no study correlating CFVR with submaximal target heart rate (HR). Objective: To evaluate the prognostic value of CFVR obtained in the LAD of patients with preserved (>50%) left ventricular ejection fraction (LVEF) who completed a dobutamine stress echocardiography (DSE), considering target HR...
May 2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28436453/functional-thermodynamics-structural-and-biological-studies-of-in-silico-identified-inhibitors-of-mycobacterium-tuberculosis-enoyl-acp-coa-reductase-enzyme
#19
Leonardo K B Martinelli, Mariane Rotta, Anne D Villela, Valnês S Rodrigues-Junior, Bruno L Abbadi, Rogério V Trindade, Guilherme O Petersen, Giuliano M Danesi, Laura R Nery, Ivani Pauli, Maria M Campos, Carla D Bonan, Osmar Norberto de Souza, Luiz A Basso, Diogenes S Santos
Novel chemotherapeutics agents are needed to kill Mycobacterium tuberculosis, the main causative agent of tuberculosis (TB). The M. tuberculosis 2-trans-enoyl-ACP(CoA) reductase enzyme (MtInhA) is the druggable bona fide target of isoniazid. New chemotypes were previously identified by two in silico approaches as potential ligands to MtInhA. The inhibition mode was determined by steady-state kinetics for seven compounds that inhibited MtInhA activity. Dissociation constant values at different temperatures were determined by protein fluorescence spectroscopy...
April 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28416302/effect-of-bacterial-biofilm-on-the-osteogenic-differentiation-of-stem-cells-of-apical-papilla
#20
Lakshmi Vishwanat, Rose Duong, Koyo Takimoto, Linda Phillips, Claudia O Espitia, Anibal Diogenes, Shivani B Ruparel, David Kolodrubetz, Nikita B Ruparel
INTRODUCTION: Although clinical success in regenerative endodontics is substantially high, histological success is limited to finding bone/cementum-like tissue instead of dentin within the canal space. The aims of this study were to investigate (1) the effect of bacterial biofilm on osteogenic gene expression in stem cells of the apical papilla (SCAP) and (2) the effect of bacterial antigens on the functional differentiation of SCAP into a mineralizing phenotype. METHODS: Using an ex vivo organotypic root canal model and an American Association of Endontists-recommended regenerative endodontic procedures, we evaluated SCAP differentiation in the presence and absence of an Enterococcus faecalis biofilm...
April 14, 2017: Journal of Endodontics
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