104 results on '"Ribeiro TC"'
Search Results
2. Analysis ofFGFR4 LocusAmplification in Pediatric and Adult Sporadic Adrenocortical Tumors.
- Author
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Ribeiro, TC, primary, Brito, LP, additional, Lerario, AM, additional, Mariani, BMP, additional, Jorge, AA, additional, Fragoso, MC, additional, Mendonca, BB, additional, and Latronico, AC, additional
- Published
- 2010
- Full Text
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3. Analysis of the D104N Polymorphism of theCOL18A1in Patients with Benign and Malignant Pheochromocytoma.
- Author
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Mariani, BMP, primary, Ribeiro, TC, additional, Toledo, RA, additional, Pereira, MAA, additional, da Silva, APSS, additional, Mendonca, BB, additional, and Fragoso, MCBV, additional
- Published
- 2010
- Full Text
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4. Multidrug-resistant and extensively drug-resistant Gram-negative prosthetic joint infections: Role of surgery and impact of colistin administration
- Author
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Papadopoulos, A, Ribera, A, Mavrogenis, AF, Rodriguez-Pardo, D, Bonnet, E, Salles, MJ, del Toro, MD, Nguyen, S, Blanco-Garcia, A, Skaliczki, G, Soriano, A, Benito, N, Petersdorf, S, Pasticci, MB, Tattevin, P, Tufan, ZK, Chan, M, O'Connell, N, Pantazis, N, Kyprianou, A, Pigrau, C, Megaloikonomos, PD, Senneville, E, Ariza, J, Papagelopoulos, PJ, Giannitsioti, E, Esteban-Moreno, J, Parron, R, Lye, D, Guner, R, Morata, L, Munoz-Mahamud, E, Lozano, L, Los-Arcos, I, Corona, PS, Lung, M, Ribeiro, TC, Klautau, GB, Cardaci, S, Izquierdo, YB, Mur, I, Crusi, X, Jordan, M, Gonzalez, JC, Coll, P, Rivera, A, Gheno, M, Ouamara-Digue, E, Jolivet-Gougeon, A, Arvieux, C, Prinz, G, Lakatos, B, Antonakos, N, Siakalis, G, Dourou, A, Aggelou, E, Nikou, P, Athanasia, S, and Igoumenou, VG
- Subjects
Prosthetic joint infection ,Multidrug resistant ,Bone, joint infection ,Extensively drug resistant ,Gram negative bacteria - Abstract
Factors influencing treatment outcome of patients with Gram-negative bacterial (GNB) multidrug-resistant (MDR) and extensively drug-resistant (XDR) prosthetic joint infection (PJIs) were analysed. Data were collected (20 0 0-2015) by 18 centres. Treatment success was analysed by surgery type for PJI, resistance (MDR/XDR) and antimicrobials (colistin/non-colistin) using logistic regression and survival analyses. A total of 131 patients (mean age 73.0 years, 35.9% male, 58.8% with co-morbidities) with MDR (n = 108) or XDR (n = 23) GNB PJI were assessed. The most common pathogens were Escherichia coli (33.6%), Pseudomonas aeruginosa (25.2%), Klebsiella pneumoniae (21.4%) and Enterobacter cloacae (17.6%). Pseudomonas aeruginosa predominated in XDR cases. Isolates were carbapenem-resistant (n = 12), fluoroquinoloneresistant (n = 63) and ESBL-producers (n = 94). Treatment outcome was worse in XDR versus MDR cases (P = 0.018). Success rates did not differ for colistin versus non-colistin in XDR cases (P = 0.657), but colistin was less successful in MDR cases (P = 0.018). Debridement, antibiotics and implant retention (DAIR) (n = 67) was associated with higher failure rates versus non-DAIR (n = 64) (OR = 3.57, 95% CI 1.68-7.58; P < 0.001). Superiority of non-DAIR was confirmed by Kaplan-Meir analysis (HR = 0.36, 95% CI 0.20-0.67) and remained unchangeable by time of infection (early/late), antimicrobial resistance (MDR/XDR) and antimicrobials (colistin/non-colistin) (Breslow-Day, P = 0.737). DAIR is associated with higher failure rates even in early MDR/XDR GNB PJIs versus implant removal. Colistin should be preserved for XDR cases as it is detrimental in MDR infections. (c) 2018 Elsevier B.V. and International Society of Chemotherapy. All rights reserved.
- Published
- 2019
5. [Kabuki make-up syndrome]
- Author
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Ribeiro Tc, Ribeiro Rc, and de Souza Jc
- Subjects
business.industry ,Kabuki make-up syndrome ,Pediatrics, Perinatology and Child Health ,Kabuki ,Medicine ,business ,Genealogy - Abstract
The authors present an original case, the first in Brazil and Latin America, of the Kabuki make-up syndrome. To diagnose KMS, the authors point out the importance of the "Pentad of Niikawa", a term created by them to indicate the five basic features of the syndrome. Also new symptoms and signs which might be part of the phenotype of KMS are described. The authors emphasize that studies concerning KMS be widely spread, in order to identify new cases.
- Published
- 1996
6. Circulation of 3 lineages of a novel Saffold cardiovirus in humans.
- Author
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Drexler JF, Luna LK, Stöcker A, Almeida PS, Ribeiro TC, Petersen N, Herzog P, Pedroso C, Huppertz HI, Ribeiro Hda C Jr, Baumgarte S, Drosten C, Drexler, Jan Felix, Luna, Luciano Kleber de Souza, Stöcker, Andreas, Almeida, Patrícia Silva, Ribeiro, Tereza Cristina Medrado, Petersen, Nadine, Herzog, Petra, and Pedroso, Célia
- Abstract
Cardioviruses cause serious disease, mainly in rodents, including diabetes, myocarditis, encephalomyelitis, and multiple sclerosis-like disseminated encephalomyelitis. Recently, a human virus isolate obtained 25 years ago, termed Saffold virus, was sequenced and classified as a cardiovirus. We conducted systematic molecular screening for Saffold-like viruses in 844 fecal samples from patients with gastroenteritis from Germany and Brazil, across all age groups. Six cardioviruses were identified in patients <6 years of age. Viral loads were 283,305-5,044,412,175 copies/g of stool. Co-infections occurred in 4 of 6 children. No evidence for outbreak-like epidemic patterns was found. Phylogenetic analysis identified 3 distinct genetic lineages. Viral protein 1 amino acids were 67.9%-77.7% identical and had a distance of at least 39.4% from known cardioviruses. Because closely related strains were found on 2 continents, global distribution in humans is suspected. Saffold-like viruses may be the first human cardiovirus species to be identified. [ABSTRACT FROM AUTHOR]
- Published
- 2008
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7. Stool pattern changes in toddlers consuming a follow-on formula supplemented with polydextrose and galactooligosaccharides.
- Author
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Ribeiro TC, Costa-Ribeiro H Jr, Almeida PS, Pontes MV, Leite ME, Filadelfo LR, Khoury JC, Bean JA, Mitmesser SH, Vanderhoof JA, Scalabrin DM, Ribeiro, Tereza C M, Costa-Ribeiro, Hugo Jr, Almeida, Patricia S, Pontes, Mariana V, Leite, Maria E Q, Filadelfo, Lais R, Khoury, Jane C, Bean, Judy A, and Mitmesser, Susan H
- Published
- 2012
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8. Contribution of physiological dynamics in predicting major depressive disorder severity.
- Author
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Pagès EG, Kontaxis S, Siddi S, Miguel MP, de la Cámara C, Bernal ML, Ribeiro TC, Laguna P, Badiella L, Bailón R, Haro JM, and Aguiló J
- Abstract
This study aimed to explore the physiological dynamics of cognitive stress in patients with Major Depressive Disorder (MDD) and design a multiparametric model for objectively measuring severity of depression. Physiological signal recordings from 40 MDD patients and 40 healthy controls were collected in a baseline stage, in a stress-inducing stage using two cognitive tests, and in the recovery period. Several features were extracted from electrocardiography, photoplethysmography, electrodermal activity, respiration, and temperature. Differences between values of these features under different conditions were used as indexes of autonomic reactivity and recovery. Finally, a linear model was designed to assess MDD severity, using the Beck Depression Inventory scores as the outcome variable. The performance of this model was assessed using the MDD condition as the response variable. General physiological hyporeactivity and poor recovery from stress predict depression severity across all physiological signals except for respiration. The model to predict depression severity included gender, body mass index, cognitive scores, and mean heart rate recovery, and achieved an accuracy of 78%, a sensitivity of 97% and a specificity of 59%. There is an observed correlation between the behavior of the autonomic nervous system, assessed through physiological signals analysis, and depression severity. Our findings demonstrated that decreased autonomic reactivity and recovery are linked with an increased level of depression. Quantifying the stress response together with a cognitive evaluation and personalization variables may facilitate a more precise diagnosis and monitoring of depression, enabling the tailoring of therapeutic interventions to individual patient needs., (© 2024 The Author(s). Psychophysiology published by Wiley Periodicals LLC on behalf of Society for Psychophysiological Research.)
- Published
- 2024
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9. Gallbladder schistosomiasis.
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Del Angel-Millán G, Jukemura J, Bicudo JB, Jureidini R, Montagnini AL, Segatelli V, Ribeiro TC, Namur GN, Costa TN, Stolzemburg LCP, Abdo EE, Ribeiro U, Herman P, and Figueira ERR
- Abstract
Schistosomiasis is an infectious disease caused by parasitic flatworms of the genus Schistosoma. The species Schistosoma mansoni is associated with hepatosplenic disease. Schistosomiasis involving the gallbladder alone is highly unusual, with a few cases reported. Herein, we present the case of a woman from a region with endemic schistosomiasis who presented with a painless solid lesion and wall thickening of the gallbladder. She underwent an uneventful laparoscopic cholecystectomy. Microscopic examination of the surgical specimen revealed Schistosoma mansoni eggs associated with granulomatous reaction, leading to the diagnosis of schistosomiasis of the gallbladder, prompting subsequent treatment with praziquantel and follow-up. This case illustrates the importance of suspicion for this diagnosis in endemic areas, as it can be misdiagnosed with malignancy if not examined microscopically. Complications and treatment strategies are poorly characterized for the few cases of schistosomiasis; reporting this case can serve as a helpful reminder of a rare presentation of this disease., Competing Interests: Conflict of interest: The authors have no conflict of interest to declare., (Copyright: © 2024 The Authors.)
- Published
- 2024
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10. IS THERE A ROLE FOR BILIODIGESTIVE BYPASS SURGERY IN TREATING CHOLESTASIS IN ADVANCED PANCREATIC CANCER?
- Author
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Stolzemburg LCP, Tustumi F, Ribeiro TC, Jureidini R, Sorbello MP, Maluf-Filho F, Jukemura J, Ribeiro Junior U, and Namur GN
- Subjects
- Humans, Retrospective Studies, Male, Female, Middle Aged, Aged, Stents, Treatment Outcome, Neoplasm Staging, Cohort Studies, Biliary Tract Surgical Procedures methods, Cholestasis etiology, Cholestasis surgery, Pancreatic Neoplasms surgery, Pancreatic Neoplasms complications
- Abstract
Background: The unresectable pancreatic head tumors develop obstructive jaundice and cholestasis during follow-up. Cholestasis is associated with complications and treatment options are endoscopic stenting (ES) and biliary bypass surgery (BBS)., Aims: The aim of the current study was to compare the safety and efficacy of biliary bypass surgery (BBS) and endoscopic stenting (ES) for cholestasis in advanced pancreas cancer., Methods: This is a retrospective cohort of patients with cholestasis and unresectable or metastatic pancreas cancer, treated with BBS or ES. Short and long-term outcomes were evaluated. We considered the need for hospital readmission due to biliary complications as treatment failure., Results: A total of 93 patients (BBS=43; ES=50) were included in the study. BBS was associated with a higher demand for postoperative intensive care (37 vs.10%; p=0.002, p<0.050), longer intensive care unit stay (1.44 standard deviation±2.47 vs. 0.66±2.24 days; p=0.004, p<0.050), and longer length of hospital stay (7.95±2.99 vs. 4.29±5.50 days; p<0.001, p<0.050). BBS had a higher risk for procedure-related complications (23 vs. 8%; p=0.049, p<0.050). There was no difference in overall survival between BBS and ES (p=0.089, p>0.050). ES was independently associated with a higher risk for treatment failure than BBS on multivariate analysis (hazard ratio 3.97; p=0.009, p<0.050)., Conclusions: BBS is associated with longer efficacy than ES for treating cholestasis in advanced pancreatic cancer. However, the BBS is associated with prolonged intensive care unit and hospital stays and higher demand for intensive care.
- Published
- 2024
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11. Effective Mosquito Repellents: Myrcene- and Cymene-Loaded Nanohydrogels against Aedes aegypti .
- Author
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Duarte JL, Di Filippo LD, Ribeiro TC, Silva ACJ, Hage-Melim LIDS, Duchon S, Carrasco D, Pinto MC, Corbel V, and Chorilli M
- Abstract
Aedes mosquito-borne diseases remain a significant global health threat, necessitating effective control strategies. This study introduces monoterpenes-based nanohydrogels for potential use as repellents against Aedes aegypti , the primary dengue vector worldwide. We formulated hydrogels using cymene- and myrcene-based nanoemulsions with different polymers: chitosan, carboxymethylcellulose (CMC), and carbopol
® . Our evaluations of rheological, texture, and bioadhesive properties identified CMC hydrogel as the most promising gelling agent for topical application, exhibiting sustained monoterpene release over 12 h with low skin permeation and high retention in the stratum corneum. Myrcene-loaded CMC hydrogel achieved a 57% feeding deterrence compared to 47% with cymene hydrogel in the mosquito membrane-feeding model. Molecular docking studies revealed interactions between myrcene and an essential amino acid (Ile116) in the Ae. aegypti odorant-binding protein 22 (AeOBP22), corroborating its higher repellent efficacy. These findings suggest that myrcene-loaded CMC hydrogels offer a promising, minimally invasive strategy for personal protection against Ae. aegypti and warrant further investigation to optimize monoterpene concentrations for vector control.- Published
- 2024
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12. Choledocoduodenal Biliary Bypass for Recurrent Choledocholithiasis in a Patient with Gastric Bypass: An Old Trick to Solve a Modern Problem.
- Author
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Ribeiro TC, Charruf AZ, Stolzemburg LCP, Jureidini R, Namur GN, Jukemura J, and Tustumi F
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- Humans, Female, Aged, Treatment Outcome, Choledocholithiasis surgery, Gastric Bypass methods, Obesity, Morbid surgery, Obesity, Morbid complications, Recurrence, Robotic Surgical Procedures methods
- Abstract
Bariatric patients are at risk for developing biliary stones. Choledocholithiasis poses a significant challenge in Roux-en-Y gastric bypass patients due to anatomical changes, complicating the treatment. We present a case of a 71-year-old female with recurrent choledocholithiasis post-bariatric surgery. After failed endoscopic attempts, a biliodigestive bypass with choledocoduodenal anastomosis was performed successfully using the Da Vinci robotic platform. This technique offers a single anastomosis, excluding the duodenum from transit, preventing food reflux. The patient had an uneventful recovery with no recurrence after 1 year. The choledocoduodenal anastomosis is a viable option for biliary diversion in patients with challenging endoscopic access post-gastric bypass, offering favorable outcomes., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2024
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13. Evidence of thickness-dependent surface-induced ferroelectricity in few-layer germanium sulfide obtained via scanning tunneling spectroscopy.
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Barreto RR, Ribeiro TC, Soares GHR, Pereira E, Miquita DR, Safar GAM, Mazzoni MSC, Malachias A, and Magalhaes-Paniago R
- Abstract
The discovery of ferroelectricity in two-dimensional van der Waals materials has sparked enormous interest from the scientific community, due to its possible applications in next-generation nanoelectronic devices, such as random-access memory devices, digital signal processors, and solar cells, among others. In the present study, we used vapor phase deposition to synthesize ultrathin germanium sulfide nano-flakes on a highly oriented pyrolytic graphite substrate. Nanostructures of variable thicknesses were characterized using scanning tunneling microscopy and spectroscopy. Tunneling currents under forward and backward biases were measured as a function of nano-flake thickness. Remarkably, we clearly observed a hysteresis pattern, which we attributed to surface ferroelectric behavior, consistent with the screening conditions of polarization charges. The effect increases as the number of layers is reduced. This experimental result may be directly applicable to miniaturized memory devices, given the two-dimensional nature of this effect.
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- 2024
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14. Scanning Tunneling Spectroscopy Method for the Prediction of Semiconductor Heterojunction Performance as a Prequel for Device Development.
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Ribeiro TC, Fonseca DHS, Barreto RR, Pereira-Andrade E, Miquita DR, Malachias A, and Magalhaes-Paniago R
- Abstract
The prediction of semiconductor device performance is a persistent challenge in materials science, and the ability to anticipate useful specifications prior to construction is crucial for enhancing the overall efficiency. In this study, we investigate the constituents of a solar cell by employing scanning tunneling microscopy (STM) and spectroscopy (STS). Through our observations, we identify a spatial distribution of the dopant type in thin films of materials that were designed to present major p-doping for germanium sulfide (GeS) and dominant n-doping for tin disulfide (SnS
2 ). By generating separate STS maps for each semiconductor film and conducting a statistical analysis of the gap and doping distribution, we determine intrinsic limitations for the solar cell efficiency that must be understood prior to processing. Subsequently, we fabricate a solar cell utilizing these materials (GeS and SnS2 ) via vapor phase deposition and carry out a characterization using standard J - V curves under both dark/illuminated irradiance conditions. Our devices corroborate the expected reduced efficiency due to doping fluctuation but exhibit stable photocurrent responses. As originally planned, quantum efficiency measurements reveal that the peak efficiency of our solar cell coincides with the range where the standard silicon solar cells sharply decline. Our STS method is suggested as a prequel to device development in novel material junctions or deposition processes where fluctuations of doping levels are retrieved due to intrinsic material characteristics such as the occurrence of defects, roughness, local chemical segregation, and faceting or step bunching.- Published
- 2024
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15. ROBOTIC ASSISTED VERSUS LAPAROSCOPIC DISTAL PANCREATECTOMY: A RETROSPECTIVE STUDY.
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Jureidini R, Namur GN, Ribeiro TC, Bacchella T, Stolzemburg L, Jukemura J, Ribeiro Junior U, and Cecconello I
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- Humans, Retrospective Studies, Pancreatic Fistula etiology, Pancreatic Fistula surgery, Pancreatectomy methods, Treatment Outcome, Length of Stay, Postoperative Complications epidemiology, Robotic Surgical Procedures methods, Laparoscopy methods, Pancreatic Neoplasms surgery
- Abstract
Background: Minimally invasive distal pancreatectomy (MIDP) is associated with less blood loss and faster functional recovery. However, the benefits of robotic assisted distal pancreatectomy (RDP) over laparoscopic distal pancreatectomy (LDP) are unknown., Aims: To compare RDP versus LDP for surgical treatment of benign lesions, pre-malignant and borderline malignant pancreatic neoplasias., Methods: This is a retrospective study comparing LDP with RDP. Main outcomes were overall morbidity and overall costs. Secondary outcomes were pancreatic fistula (PF), infectious complications, readmission, operative time (OT) and length of hospital stay (LOS)., Results: Thirty patients submitted to LDP and 29 submitted to RDP were included in the study. There was no difference regarding preoperative characteristics. There was no difference regarding overall complications (RDP - 72,4% versus LDP - 80%, p=0,49). Costs were superior for patients submitted to RDP (RDP=US$ 6,688 versus LDP=US$ 6,149, p=0,02), mostly due to higher costs of surgical materials (RDP=US$ 2,364 versus LDP=1,421, p=0,00005). Twenty-one patients submitted to RDP and 24 to LDP developed pancreatic fistula (PF), but only 4 RDP and 7 LDP experienced infectious complications associated with PF. OT (RDP=224 min. versus LDP=213 min., p=0.36) was similar, as well as conversion to open procedure (1 RDP and 2 LDP)., Conclusions: The postoperative morbidity of robotic distal pancreatectomy is comparable to laparoscopic distal pancreatectomy. However, the costs of robotic distal pancreatectomy are slightly higher.
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- 2023
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16. Brazilian Portuguese Childhood Autism Spectrum Test: an investigation of the factor structure of autistic traits in school-aged children from Brazil.
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Ribeiro TC, Farhat LC, Casella EB, Graeff-Martins AS, Baron-Cohen S, Allison C, and Polanczyk GV
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- Adolescent, Humans, Child, Brazil epidemiology, Language, Parents, Surveys and Questionnaires, Autistic Disorder diagnosis, Autism Spectrum Disorder diagnosis
- Abstract
Objective: There is limited evidence about the cross-cultural validity of autistic symptoms in school-aged children in Brazil. We used data from a large school survey to evaluate the factor structure of autism symptoms in community-dwelling children and adolescents., Methods: We translated the Childhood Autism Spectrum Test to Brazilian Portuguese and performed factor analyses to investigate the factor structure of parent-reported autistic symptoms in a large sample (n=8,571) of children/adolescents from a school survey in the metropolitan area of São Paulo., Results: Autistic symptoms were best conceptualized under a correlated-factors model with two factors: one predominantly characterized by social-communication symptoms and the other by symptoms of inflexible/restricted language, behaviors, and interests., Conclusions: These findings provide evidence that the structure of autistic symptoms in Brazil is similar to that described in other countries, indicating the cross-cultural validity of autism in Brazil., Competing Interests: EBC has served as consultant, advisory board member, and/or speaker for Aché, Mantecorp, and Takeda. GVP has served as consultant, advisory board member, and/or speaker for Abbott, Aché, Medice, Novo Nordisk, and Takeda; and has received royalties from Editora Manole. The other authors report no conflicts of interest.
- Published
- 2022
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17. Exploiting Polymeric Films as a Multipurpose Drug Delivery System: a Review.
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Riccio BVF, Silvestre ALP, Meneguin AB, Ribeiro TC, Klosowski AB, Ferrari PC, and Chorilli M
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- Alginates, Cellulose, Delayed-Action Preparations, Drug Delivery Systems, Female, Humans, Pectins, Polymers, Solvents, Chitosan
- Abstract
Polymeric films are drug delivery systems that maintain contact with the delivery tissue and sustain a controlled release of therapeutic molecules. These systems allow a longer time of drug contact with the target site in the case of topical treatments and allow the controlled administration of drugs. They can be manufactured by various methods such as solvent casting, hot melt extrusion, electrospinning, and 3D bioprinting. Furthermore, they can employ various polymers, for example PVP, PVA, cellulose derivatives, chitosan, gelling gum, pectin, and alginate. Its versatility is also applicable to different routes of administration, as it can be administered to the skin, oral mucosa, vaginal canal, and eyeballs. All these factors allow numerous combinations to obtain a better treatment. This review focuses on exploring some possible ways to develop them and some particularities and advantages/disadvantages in each case. It also aims to show the versatility of these systems and the advantages and disadvantages in each case, as they bring the opportunity to develop different medicines to facilitate therapies for the most diverse purposes ., (© 2022. The Author(s), under exclusive licence to American Association of Pharmaceutical Scientists.)
- Published
- 2022
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18. Mental health assessment of Spanish frontline healthcare workers during the SARS-CoV-2 pandemic.
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Sangrà PS, Ribeiro TC, Esteban-Sepúlveda S, Pagès EG, Barbeito BL, Llobet JA, Moya-Prats JLP, Pérez LP, and Mir SA
- Abstract
Background and Objective: The Covid-19 pandemic continues challenging health systems globally, exposing healthcare workers to constant physical and psychological stressors. To date, several studies have already shown the catastrophic impact on the mental health of medical personnel during the early period of the pandemic. Nevertheless, literature evidences the dearth of works that evaluate the effect over time, understanding the pandemic as a sustained extreme stressor. The present study examines the effect of the pandemic on the mental health of Covid-19 frontline healthcare workers at six months follow-up., Material and Methods: A total of 141 frontline healthcare workers from two tertiary hospitals were recruited between July and November 2020. Healthcare workers were evaluated psychologically at baseline and six months follow-up (January to May 2021) using psychometric tests for the assessment of acute stress (VASS, PSS-10, PCL-5), anxiety (STAI) and depression (PHQ-2)., Results: Overall, there was a general worsening of the mental health between the two psychological assessments, especially regarding depression and predisposition to perceiving the situations as a threat. Nurses and nurse aides showed poorer mental health while physicians improved over time. Reduced working hours and higher physical exercise resulted in better mental health among healthcare workers. Women and nursing staff were the most affected by psychological distress at baseline and six months follow-up., Conclusion: Reduced working hours, adequate resting periods, physical exercise, and efficient intervention strategies are of utmost importance in preventing, controlling, and reducing psychological distress among healthcare workers when coping with critical scenarios such as the current pandemic., (© 2021 The Author(s).)
- Published
- 2022
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19. Curcumin-Loaded Mesoporous Silica Nanoparticles Dispersed in Thermo-Responsive Hydrogel as Potential Alzheimer Disease Therapy.
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Ribeiro TC, Sábio RM, Luiz MT, de Souza LC, Fonseca-Santos B, Cides da Silva LC, Fantini MCA, Planeta CDS, and Chorilli M
- Abstract
Alzheimer's disease (AD) is a neurodegenerative disorder characterized by cognitive and behavioral impairment. Curcumin-loaded mesoporous silica nanoparticles (MSN-CCM) can overcome the drawbacks related to the free curcumin (CCM) clinical application, such as water insolubility and low bioavailability, besides acting over the main causes associated to AD. A thermo-responsive hydrogel is an interesting approach for facilitating the administration of the nanosystem via a nasal route, as well as for overcoming mucociliary clearance mechanisms. In light of this, MSN-CCM were dispersed in the hydrogel and evaluated through in vitro and in vivo assays. The MSNs and MSN-CCM were successfully characterized by physicochemical analysis and a high value of the CCM encapsulation efficiency (EE%, 87.70 ± 0.05) was achieved. The designed thermo-responsive hydrogel (HG) was characterized by rheology, texture profile analysis, and ex vivo mucoadhesion, showing excellent mechanical and mucoadhesive properties. Ex vivo permeation studies of MSN-CCM and HG@MSN-CCM showed high permeation values (12.46 ± 1.08 and 28.40 ± 1.88 μg cm
-2 of CCM, respectively) in porcine nasal mucosa. In vivo studies performed in a streptozotocin-induced AD model confirmed that HG@MSN-CCM reverted the cognitive deficit in mice, acting as a potential formulation in the treatment of AD.- Published
- 2022
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20. Exploiting mesoporous silica, silver and gold nanoparticles for neurodegenerative diseases treatment.
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Ribeiro TC, Sábio RM, Carvalho GC, Fonseca-Santos B, and Chorilli M
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- Drug Delivery Systems, Gold therapeutic use, Humans, Porosity, Silicon Dioxide therapeutic use, Silver, Metal Nanoparticles, Nanoparticles, Neurodegenerative Diseases drug therapy
- Abstract
Neurodegenerative diseases (NDs) are considered public health problem characterized by neural loss causing cognitive and behavioral impairments. It is currently possible to use drugs capable of controlling the symptoms caused by these diseases. However, treatment is not able to prevent neural loss. In addition, poor solubility, low bioavailability due to the inability for crossing the blood-brain barrier (BBB) are described as the main limitations of the treatment. Nanotechnology involves the development of nanoscale drug delivery systems and they have been employed to optimize therapeutics face to several diseases treatment. In light of this, this review describes the highlights on the fabrication of nanotechnology-based drug delivery systems emphasizing mesoporous silica, gold and silver nanoparticles (MSNs, AuNPs and AgNPs, respectively) and their biological behavior for the treatment of Alzheimer's and Parkinson diseases (ADs and PDs, respectively)., (Copyright © 2022 Elsevier B.V. All rights reserved.)
- Published
- 2022
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21. The Effect of Photobiomodulation Therapy in Different Doses on Bone Repair of Critical Size Defects in Rats: A Histomorphometric Study.
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De Marco AC, Torquato LC, Gonçalves PR, Ribeiro TC, Nunes CM, Bernardo DV, Gomes MF, Jardini MAN, and Santamaria MP
- Abstract
Introduction: Photobiomodulation therapy (PBM) appears to induce osteogenesis and stimulate fracture repair; because of its capacity, it is considered a promising treatment, but the characteristics of response to different radiation doses must be investigated through in vivo studies to establish their safety and effectiveness. Thus, this paper aims to analyze the effects of the PBM at different doses on the repair of critical bone defects through histological and histomorphometric analyses. Methods: Sixty 90-day-old adult rats ( Rattus norvegicus , albinus , Wistar) weighing approximately 300 g were used. Critical bone defects of 5 mm in diameter were performed in their calvaria. The animals were randomly separated into 5 groups: C-Blood clot, L15-PBM 15J/cm
2 , L30-PBM 30 J/ cm2 , L45-PBM 45 J/cm2 , L60-PBM 60 J/cm2 . Each group was subdivided according to observation periods of 30 and 60 days with 6 rats in each subgroup. Low-level gallium aluminum arsenide (GaAlAs) lasers were used at a 660 nm wavelength, 30 mW and 0.04 cm2 in area. The PBM was applied over 5 points; 4 points of application were distributed on the edges while one point of application was located in the center of the bone defect. PBM occurred right after the procedure. In 30 and 60 days, the animals were euthanized by anesthesia overdose and the analyses were performed. The data were analyzed statistically by the ANOVA, together with the Tukey test, whose significance level was 5%. Results: As regards the treatment factor, the highest percentage of bone neoformation was achieved by group L45-60. The group with the highest closure, despite not having a statistically significant difference with the other doses, was 45 J with only 0.49 mm between edges. Conclusion: Thus, the present study allowed concluding that the highest percentage of bone neoformation area was achieved at 45 J/cm2 in 60 days; that is, it was significantly effective in comparison with other doses., (Copyright © 2021 J Lasers Med Sci.)- Published
- 2021
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22. The impact of sonication cultures when the diagnosis of prosthetic joint infection is inconclusive.
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Ribeiro TC, Honda EK, Daniachi D, Cury RPL, da Silva CB, Klautau GB, and Salles MJ
- Subjects
- Humans, Aged, Female, Male, Retrospective Studies, Middle Aged, Aged, 80 and over, Arthroplasty, Replacement, Knee adverse effects, Synovial Fluid microbiology, Arthroplasty, Replacement, Hip adverse effects, Sensitivity and Specificity, Prosthesis-Related Infections diagnosis, Prosthesis-Related Infections microbiology, Sonication
- Abstract
Background: In the absence of a gold standard criterion for diagnosing prosthetic joint infections (PJI), sonication of the removed implant may provide superior microbiological identification to synovial fluid and peri-implant tissue cultures. The aim of this retrospective study was to assess the role of sonication culture compared to tissue cultures for diagnosing PJI, using different consensus and international guidelines for PJI definition., Methods: Data of 146 patients undergoing removal of hip or knee arthroplasties between 2010 and 2018 were retrospectively reviewed. The International Consensus Meeting (ICM-2018), Musculoskeletal Infection Society (MSIS), Infectious Diseases Society of America (IDSA), the European Bone and Joint Infection Society (EBJIS), and a modified clinical criterion, were used to compare the performance of microbiological tests. McNemar´s test and proportion comparison were employed to calculate p-value., Results: Overall, 56% (82/146) were diagnosed with PJI using the clinical criteria. Out of these cases, 57% (47/82) tested positive on tissue culture and 93% (76/82) on sonication culture. Applying this clinical criterion, the sensitivity of sonication fluid and tissue cultures was 92.7% (95% CI: 87.1%- 98.3%) and 57.3% (95% CI: 46.6%-68.0%) (p<0.001), respectively. When both methods were combined for diagnosis (sonication and tissue cultures) sensitivity reached 96.3% (95% CI: 91.5%-100%). Sonication culture and the combination of sonication with tissue cultures, showed higher sensitivity rates than tissue cultures alone for all diagnostic criteria (ICM-18, MSIS, IDSA and EBJIS) applied. Conversely, tissue culture provided greater specificity than sonication culture for all the criteria assessed, except for the EBJIS criteria, in which sonication and tissue cultures specificity was 100% and 95.3% (95% CI: 87.8-100%), respectively (p = 0.024)., Conclusions: In a context where diagnostic criteria available have shortcomings and tissue cultures remain the gold standard, sonication cultures can aid PJI diagnosis, especially when diagnostic criteria are inconclusive due to some important missing data (joint puncture, histology)., Competing Interests: The authors have declared that no competing interests exist.
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- 2021
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23. Design and validation of an electrophysiological based tool to assess chronic stress. Case study: burnout syndrome in caregivers.
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Aguiló Mir S, García Pagès E, López Barbeito B, Ribeiro TC, Garzón-Rey JM, and Aguiló Llobet J
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- Humans, Psychometrics, Reproducibility of Results, Stress, Psychological diagnosis, Surveys and Questionnaires, Burnout, Professional diagnosis, Caregivers
- Abstract
Caregiver burnout syndrome is an increasingly seen condition, although the subjective nature of self-administered psychometric tests and the lack of a consensual diagnostic tool might hinder a proper diagnosis. The availability of objective psychosomatic measures of stress might facilitate the early diagnosis and clinical management of these patients. For this reason, the aim of this work was to develop a quantitative tool to evaluate the stress level of caregivers in a noninvasive and repeatable manner. An observational, controlled, matched study was designed including a group of 38 principal caregivers of chronic patients and a control group of 38 non-caregivers. Psychometric, biochemical, and electrophysiological data were analyzed along with sociodemographic data. A quantitative chronic stress reference scale (CSRs) was constructed based on the weighted contribution of several psychometric and biochemical variables and afterwards, a predictive psychosomatic model (ESBSm) correlated with CSRs was elaborated from extracted variables of several electrophysiological signals monitored for 10 min. The resulting CSR scale shows a high power to discriminate caregivers from the control group while the ESBSm shows a 79% correlation with the CSR scale validated through a 5-fold process. Therefore, the results demonstrate that the ESBS model is an objective and validated tool to diagnose the degree of stress linked to burnout in caregivers of chronic patients from a 10-min session of noninvasive monitoring with a reliability equivalent to the questionnaires currently used to quantify stress in caregivers.
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- 2021
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24. Insights of Outcome after Resection of Small Nonfunctioning Neuroendocrine Pancreatic Tumors.
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Figueira ERR, Ribeiro JF, Ribeiro TC, Jureidini R, Namur GN, Costa TN, Bacchella T, and Cecconello I
- Abstract
Background: The incidence of small nonfunctioning neuroendocrine pancreatic tumors (NF-PNETs) has been increasing systematically in the last few decades. Surgical resection was once considered the treatment of choice but has been questioned in the direction of a more conservative approach for selected patients. Our aim was to analyze the outcome of surgical resection of small (≤3cm) NF-PNETs., Methods: We retrospectively evaluated 14 patients with sporadic NF-PNETs who underwent pancreatic resection. Data were collected from patients' medical records., Results: Of the 14 patients included, 35.71% were men, and the average age was 52.36 ± 20.36 years. Comorbidities were present in 92.86% of the cases. The incidence of postoperative complications was 42.86%, the 30-day mortality was zero, and the length of follow-up was 3.31 ± 3.0 years. The results of pathological evaluations revealed WHO grade I in 42.86% of cases, II in 21.43%, and neuroendocrine carcinoma in 35.71%. The median tumor size was 1.85cm (range, 0.5-3cm), and 2 cases had synchronous metastasis. The median TNM stage was IIa (range, I-IV). The disease-free and patient survival rates were 87.5% and 100% at 3 years and 43.75% and 75% at 10 years, respectively. The tumor pathological grade was significantly higher in head tumors than body-tail tumors, but there were no differences with respect to tumor size and TNM staging., Conclusion: A surgical approach to treat small sporadic NF-PNETs is safe with low mortality and high patient survival. Based on these data, small pancreatic head tumors can be more aggressive, suggesting that surgical resection is still the best option to treat small nonfunctioning PNETS. Thus, conservative treatment should be indicated very cautiously for only cases with absolute contraindications for surgery., Competing Interests: The authors declare that they have no conflict of interest., (Copyright © 2021 Estela Regina Ramos Figueira et al.)
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- 2021
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25. An Unexpected Cause of Headache and Splenic Lesions During Anti-TNF Therapy in Crohn Disease.
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José da Silva R, da Rocha Ribeiro TC, Chebli LA, and Chebli JMF
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- Adult, Cerebrum pathology, Humans, Male, Medical Illustration, Spleen pathology, Crohn Disease drug therapy, Headache chemically induced, Splenic Diseases chemically induced, Splenomegaly chemically induced, Tumor Necrosis Factor Inhibitors adverse effects
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- 2021
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26. Highlighting the impact of chitosan on the development of gastroretentive drug delivery systems.
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Souza MPC, Sábio RM, Ribeiro TC, Santos AMD, Meneguin AB, and Chorilli M
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- Administration, Oral, Algorithms, Animals, Chitin chemistry, Gastric Emptying drug effects, Humans, Hydrogels chemistry, Models, Biological, Molecular Structure, Stomach anatomy & histology, Stomach drug effects, Chitosan chemistry, Delayed-Action Preparations, Drug Carriers chemistry, Drug Delivery Systems, Gastric Mucosa drug effects, Gastric Mucosa metabolism
- Abstract
The development of gastroretentive systems have been growing lately due to the high demand for carriers that increase drug bioavailability and therapeutic effectiveness after oral administration. Most of systems reported up to now are based on chitosan (CS) due to its peculiar properties, such as cationic nature, biodegradability, biocompatibility and important mucoadhesiveness, which make CS a promising biopolymer to design effective gastroretentive systems. In light of this, we reported in this review the CS versatility to fabricate different types of nano- and microstructured gastroretentive systems. For a better understanding of the gastric retention mechanisms, we highlighted expandable, density-based, magnetic, mucoadhesive and superporous systems. The biological and chemical properties of CS, anatomophysiological aspects related to gastrointestinal tract (GIT) and some applications of these systems are also described here. Overall, this review may assist researchers to explore new strategies to design safe and efficient gastroretentive systems in order to popularize them in the treatment of diseases and clinical practices., Competing Interests: Declaration of competing interest The authors declare no conflict of interest., (Copyright © 2020. Published by Elsevier B.V.)
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- 2020
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27. The Predominance of Giardia duodenalis AII sub-assemblage in young children from Salvador, Bahia, Brazil.
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Figueiredo Pacheco FT, Novaes Rodrigues Silva RK, Souza de Carvalho S, Carvalho Rocha F, Trindade das Chagas GM, Chagas Gomes D, da Costa-Ribeiro Junior H, Medrado Ribeiro TC, Peixoto de Mattos Â, Kalabric Silva L, Matos Soares N, and Aquino Teixeira MC
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- Adolescent, Brazil epidemiology, Child, Child Day Care Centers, Child, Preschool, Feces parasitology, Female, Genotype, Giardia lamblia isolation & purification, Giardiasis transmission, Humans, Infant, Infant, Newborn, Male, Multilocus Sequence Typing, Prevalence, Cytoskeletal Proteins genetics, Giardia lamblia genetics, Giardiasis epidemiology, Glutamate Dehydrogenase genetics, Protozoan Proteins genetics
- Abstract
Introduction: Giardia duodenalis is an intestinal protozoan with a high prevalence in children of developing countries. Molecular studies revealed a great genetic diversity of G. duodenalis, with assemblages A and B found mainly in humans. Despite its importance, the information on the molecular epidemiology of human giardiasis is still limited in Brazil., Objective: To characterize G. duodenalis molecular isolates in children from Salvador, Bahia, Brazil., Materials and Methods: Giardia duodenalis positive fecal samples were obtained from 71 children from two day care centers and 39 users of a clinical analysis laboratory. Samples were analyzed by PCR-RFLP of the glutamate dehydrogenase (gdh) and beta-giardin genes and by the sequencing of beta-giardin., Results: Of the 110 G. duodenalis samples, 80 (72.7%) amplified one or both target genes. Of these, 62 (77.5 %) were identified as assemblage A and 18 (22.5%) as assemblage B. The subassemblage AII was identified in 58.8% (n=47) of isolates followed by the sub-assemblage AI (18.8%, n=15), BIV (11.2%, n=9), and BIII (5.0%, n=4). The AII sub-assemblage was the most frequent in children of both day care centers whereas AI was found only in the group attended at the clinical laboratory. Sub-assemblage AII predominated in children under two years., Conclusions: The higher frequency of AII sub-assemblage suggests that anthroponotic transmission is more common in Salvador, but that zoonotic transmission pathways are also present and a change in susceptibility to different molecular patterns of Giardia may occur during child growth.
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- 2020
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28. Nanosystems against candidiasis: a review of studies performed over the last two decades.
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Araujo VHS, Duarte JL, Carvalho GC, Silvestre ALP, Fonseca-Santos B, Marena GD, Ribeiro TC, Dos Santos Ramos MA, Bauab TM, and Chorilli M
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- Animals, Antifungal Agents chemistry, Antifungal Agents history, Candidiasis history, History, 20th Century, History, 21st Century, Humans, Nanoparticles chemistry, Nanoparticles history, Nanotechnology history, Antifungal Agents therapeutic use, Candidiasis drug therapy, Nanoparticles therapeutic use
- Abstract
The crescent number of cases of candidiasis and the increase in the number of infections developed by non-albicans species and by multi-resistant strains has taken the attention of the scientific community, which has been searching for new therapeutic alternatives. Among the alternatives found the use of nanosystems for delivery of drugs already commercialized and new biomolecules have grown, in order to increase stability, solubility, optimize efficiency and reduce adverse effects. In view of the growing number of studies involving technological alternatives for the treatment of candidiasis, the present review came with the intention of gathering studies from the last two decades that used nanotechnology for the treatment of candidiasis, as well as analysing them critically and pointing out the future perspectives for their application with this purpose. Different studies were considered for the development of this review, addressing nanosystems such as metallic nanoparticles, mesoporous silica nanoparticles, polymeric nanoparticles, liposomes, nanoemulsion, microemulsion, solid lipid nanoparticle, nanostructured lipid carrier, lipidic nanocapsules and liquid crystals; and different clinical presentations of candidiasis. As a general overview, nanotechnology has proven to be an important ally for the treatment against the diversity of candidiasis found in the clinic, whether in increasing the effectiveness of commercialized drugs and reducing their adverse effects, as well as allowing exploring more effectively properties therapeutics of new biomolecules.
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- 2020
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29. A randomised clinical pilot trial to test the effectiveness of parent training with video modelling to improve functioning and symptoms in children with autism spectrum disorders and intellectual disability.
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Bordini D, Paula CS, Cunha GR, Caetano SC, Bagaiolo LF, Ribeiro TC, Martone MCC, Portolese J, Moya AC, Brunoni D, Bosa C, Brentani H, Cogo-Moreira H, and de Jesus Mari J
- Subjects
- Adult, Child, Child, Preschool, Female, Humans, Male, Pilot Projects, Single-Blind Method, Video Recording, Autism Spectrum Disorder therapy, Education, Nonprofessional methods, Intellectual Disability therapy, Outcome Assessment, Health Care, Parents
- Abstract
Background: Poor eye contact and joint attention are early signs of autism spectrum disorder (ASD) and important prerequisites for developing other socio-communicative skills. Teaching parents evidence-based techniques to improve these skills can impact the overall functioning of children with ASD. We aimed to analyse the impact of conducting a group parent-training intervention with video modelling to improve the intelligent quotient (IQ), social and communication functioning and to minimise symptoms in children with ASD and intellectual disability (ID)., Methods: Study design: A multicentre, single-blinded, randomised clinical pilot trial of parent training using video modelling was conducted., Sample: Sixty-seven parents of children with ASD, aged between 3 and 6 years and with IQs between 50 and 70, were randomised: 34 to the intervention group and 33 to the control group. Intervention program: The intervention group received parent training over 22 sessions, and the control group received the standard community treatment., Instruments: Pre-evaluation and post-evaluation (week 28), the following were used: Autism Diagnostic Interview, Vineland Adaptive Behaviour Scale I, Snijders-Oomen Nonverbal Intelligence Test, Autism Behaviour Checklist and Hamilton Depression Rating Scale., Data Analysis: Intention to treat and complier-average causal effect (CACE) were used to estimate the effects of the intervention., Results: There was a statistically significant improvement in the Vineland standardized communication scores in CACE (Cohen's d = 0.260). There was a non-statistically significant decrease in autism symptomatology (Autism Behaviour Checklist total scores) and a significant increase in the non-verbal IQ in the intervention group. After the false discovery rate correction was applied, IQ remained statistically significant under both paradigms. The effect size for this adjusted outcome under the intention-to-treat paradigm was close to 0.4, and when considering adherence (CACE), the effect sizes were more robust (IQ's Cohen's d = 0.433)., Conclusions: Parent training delivered by video modelling can be a useful technique for improving the care given to children with ASD and ID, particularly in countries that lack specialists., (© 2020 MENCAP and International Association of the Scientific Study of Intellectual and Developmental Disabilities and John Wiley & Sons Ltd.)
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- 2020
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30. Antidepressant-like effect of hydroalcoholic extract from barks of Rapanea ferruginea: Role of monoaminergic system and effect of its isolated compounds myrsinoic acid A and B.
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Zimath PL, Dalmagro AP, Ribeiro TC, da Silva RML, Lopes de Almeida GR, Malheiros A, da Silva LM, and de Souza MM
- Subjects
- Alkenes isolation & purification, Animals, Benzofurans isolation & purification, Female, Mice, Monoamine Oxidase metabolism, Plant Extracts administration & dosage, Plant Extracts isolation & purification, Alkenes administration & dosage, Antidepressive Agents administration & dosage, Behavior, Animal drug effects, Benzofurans administration & dosage, Biogenic Monoamines metabolism, Brain drug effects, Brain metabolism
- Abstract
Major Depressive Disorder (MDD) is a highly disabling condition and has been linked to increased inflammatory mediators. Hydroalcoholic extract from barks of Rapanea ferruginea (HEBRF) and the majoritary compounds-myrsinoic acid A (MAA) and B (MAB)-have been studied due to their anti-inflammatory potential, but there is no evidence about its antidepressant-like effects. This research investigated the HEBRF, MAA, and MAB antidepressant-like effect, besides the involvement of the monoaminergic system and MAO-A activity in the HEBRF antidepressant-like effect. HEBRF (50-300 mg/kg, p.o.), MAA (5-30 mg/kg, p.o.) or MAB (3-60 mg/kg, p.o.) were administrated to mice, and behavioral parameters were assessed using the tail suspension test (TST), splash test (ST) and open field test (OFT). The involvement of monoaminergic system in the HEBRF antidepressant-like effect was established through the pretreatment of mice with antagonists. The influence triggered by HEBRF in the monoamine oxidase A (MAO-A) activity was evaluated in the hippocampus (HIP) and prefrontal cortex (PFC) of mice. HEBRF (100-300 mg/kg) promoted antidepressant-like effect in the TST and augmented the total time of grooming in the ST, without compromising the locomotor activity. Pretreatment of mice with serotoninergic, dopaminergic, and noradrenergic antagonists, reversed the HEBRF antidepressant-like effect. Besides, HEBRF inhibited the MAO-A activity in the HIP and PFC. Moreover, MAA (5 mg/kg) and MAB (3 mg/kg) also promoted antidepressant-like and anti-anhedonic effects in mice. Data showed that monoaminergic system is involved in the HEBRF antidepressant-like effect, besides MAA and MAB possibly could be responsible for these pharmacological effects., Competing Interests: Declaration of Competing Interest There are no conflicts of interest., (Copyright © 2020 Elsevier B.V. All rights reserved.)
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- 2020
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31. A new species of Characidium (Characiformes: Crenuchidae) from the upper rio São Francisco basin, Minas Gerais, Brazil.
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Zanata AM, Ribeiro TC, AraÚjo-Porto FA, Pessali TC, and Oliveira-Silva L
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- Animals, Brazil, Characiformes
- Abstract
Characidium cacah, new species, apparently endemic to the rio das Velhas sub-basin, upper rio São Francisco basin, Brazil, is described. The new species is easily distinguished from congeners, except C. chicoi, C. helmeri, C. mirim, C. nana, C. nupelia, C. stigmosum and C. xavante, by having an incomplete lateral line and for lacking an adipose fin. The new species can be diagnosed from the aforementioned species by a series of characters, including the presence of 12 circumpeduncular scales, the isthmus completely scaled, a thin inconspicuous or dashed midlateral dark stripe, the absence of a conspicuous peduncular blotch, and humeral blotch and basicaudal spot variably marked.
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- 2020
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32. The Impact of Spirituality and Religiosity on Mental Health and Quality of Life of Patients with Active Crohn's Disease.
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de Campos RJDS, Lucchetti G, Lucchetti ALG, da Rocha Ribeiro TC, Chebli LA, Malaguti C, Gaburri PD, Pereira LMN, de Almeida JG, and Chebli JMF
- Subjects
- Adaptation, Psychological, Adult, Brazil epidemiology, Crohn Disease epidemiology, Crohn Disease therapy, Cross-Sectional Studies, Female, Humans, Male, Mental Health, Middle Aged, Religion and Medicine, Crohn Disease psychology, Quality of Life psychology, Religion, Spirituality
- Abstract
We aim to investigate the association among religious/spiritual coping (RSC), quality of life (QOL), and mental health in patients with active Crohn's disease (CD). This cross-sectional study included 102 patients with active CD. Religious and spiritual beliefs were common among patients, being positive RSC higher than negative RSC. Negative coping was associated with mood disorders (depressive or anxiety symptoms) through the Hospital Anxiety and Depression Scale (β = 0.260, p < 0.01) but not with QOL (Inflammatory Bowel Disease Questionnaire) (β = - 0.105, p = NS) after adjustments. Positive coping and other religious/spiritual beliefs and behaviors were not associated with either QOL or mental health. This study suggests that a negative RSC is associated with worse mental health outcomes. This may detrimentally impact adaptations to deal with CD in the active phase, although patients generally tend to use more common positive strategies. These findings may increase the awareness of health professionals while dealing with spiritual beliefs in patients with CD.
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- 2020
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33. New insights on evolutionary aspects of Pythium insidiosum and other peronosporaleans.
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Weiblen C, Robe LJ, de Azevedo MI, Ianiski LB, Stibbe PC, Ribeiro TC, Zanette RA, Pereira DIB, Santurio JM, and Botton SA
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- Animals, DNA, Ribosomal Spacer genetics, Electron Transport Complex IV genetics, Genes, Mitochondrial, Phytophthora classification, RNA, Ribosomal genetics, Evolution, Molecular, Oomycetes classification, Phylogeny, Pythium classification, Pythium isolation & purification
- Abstract
Background: The evolution of pathogenic mechanisms is a major challenge, which requires a thorough comprehension of the phylogenetic relationships of pathogens. Peronosporaleans encompasses a heterogeneous group of oomycetes that includes some animal/human pathogens, like Pythium insidiosum., Objective: We analysed here the phylogenetic positioning and other evolutionary aspects related to this species and other peronosporaleans, using a multi-locus approach with one mitochondrial and three nuclear genes., Methodology: Phylogenetic patterns of 55 oomycetes were inferred by maximum likelihood and Bayesian analysis, and a relaxed molecular clock method was applied to infer the divergence time of some peronosporaleans branches., Results: Pythium insidiosum was monophyletic with a major and polytomous clade of American isolates; however, Pythium spp. was found to be paraphyletic with Phytopythium sp. and Phytophthora spp. In general, peronosporaleans subdivided into four lineages, one of which evidenced a close relationship of P insidiosum, P aphanidermatum and P arrhenomanes. This lineage diverged about 63 million years ago (Mya), whereas P insidiosum diversified at approximately 24 Mya. The divergence of American and Thai isolates seems to have occurred at approximately 17 Mya, with further American diversification at 2.4 Mya., Conclusion: Overall, this study clarifies the phylogenetic relationships of P insidiosum regarding other peronosporaleans in a multi-locus perspective, despite previous claims that phylogenomic analyses are needed to accurately infer the patterns and processes related to the evolution of different lineages in this group. Additionally, this is the first time that a molecular clock was applied to study the evolution of P insidiosum., (© 2020 Blackwell Verlag GmbH.)
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- 2020
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34. Structure-activity relationships of sulfonamides derived from carvacrol and their potential for the treatment of Alzheimer's disease.
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de Souza MM, Andreolla MC, Ribeiro TC, Gonçalves AE, Medeiros AR, de Souza AS, Ferreira LLG, Andricopulo AD, Yunes RA, and de Oliveira AS
- Abstract
Five synthetic sulfonamides derived from carvacrol, a natural product and a small molecule with druglike properties, were evaluated with respect to their effects on the cognitive deficits of animals with streptozotocin (STZ)-induced Alzheimer's disease (AD). Memory, ambulation, anxiety and oxidative stress were evaluated. In vitro assays were performed to assess the inhibition of acetylcholinesterase (AChE), and the data were combined with molecular docking for the establishment of structure-activity relationships. The memories of animals treated with the compounds derived from morpholine ( 1 ), hydrazine ( 3 ) and 2-phenol ( 5 ) were improved. Compound 3 was the most promising, yielding excellent results in the inhibitory avoidance test. Moreover, the compounds did not exhibit any deleterious effects on the animals' ambulation in the open field test. Molecular docking confirmed the results obtained in the AChE inhibition assay. In short, compounds 1 , 3 and 5 can reduce STZ-induced deficits and show potential for the treatment of Alzheimer's. In addition, these agents produce significant anxiolytic and antioxidant effects., (This journal is © The Royal Society of Chemistry 2020.)
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- 2020
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35. Intradermal injection of Pythium insidiosum protein antigens for improved diagnosis and treatment of pythiosis in an experimental model.
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Weiblen C, Zanette RA, Ribeiro TC, Pereira Dos Santos CE, Ianiski LB, Pereira DIB, Santurio JM, and Botton SA
- Subjects
- Animals, Antigens immunology, Cytokines blood, Disease Models, Animal, Injections, Intradermal, Interferon-gamma blood, Pythium immunology, Rabbits, Antigens administration & dosage, Pythiosis diagnosis, Pythiosis therapy, Pythium chemistry
- Abstract
The oomycetous pathogen Pythium insidiosum is the causative agent of pythiosis, a life-threatening disease that affects animals and humans. This infectious disease is difficult to treat, and early and accurate diagnosis is critical for effective treatment. In this sense, this study aimed to evaluate the intradermal (ID) injection of P. insidiosum protein antigens (PiPA) for the diagnosis and treatment of pythiosis using an experimental model. For diagnostic purposes, PiPA were injected by the ID route in the following groups of rabbits: (a) control; (b) previously immunized with PiPA injected by the subcutaneous (SC) route; and (c) infected with P. insidiosum zoospores. For treatment purposes, rabbits with pythiosis were also treated with PiPA by the ID or SC routes. Mean induration sizes were different at 24 h and 72 h readings when compared to the control group. Sensitivity of the protocol was 100% at 24 h and 80% at 72 h, with 100% specificity in both readings. PiPA treatment using ID or SC routes did not result in significant differences in lesion sizes and cure rates; however, serum levels of interferon-gamma were higher in SC route. This study demonstrates the applicability of PiPA ID for diagnosis and treatment of pythiosis in an experimental model., (© The Author(s) 2018. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology.)
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- 2019
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36. New insights towards mesoporous silica nanoparticles as a technological platform for chemotherapeutic drugs delivery.
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Sábio RM, Meneguin AB, Ribeiro TC, Silva RR, and Chorilli M
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- Animals, Antineoplastic Agents chemistry, Antineoplastic Agents pharmacokinetics, Humans, Nanoparticles chemistry, Porosity, Silicon Dioxide chemistry, Silicon Dioxide pharmacokinetics, Tissue Distribution, Antineoplastic Agents administration & dosage, Drug Delivery Systems, Nanoparticles administration & dosage, Neoplasms drug therapy, Silicon Dioxide administration & dosage
- Abstract
Mesoporous silica nanoparticles (MSNs) displays interesting properties for biomedical applications such as high chemical stability, large surface area and tunable pores diameters and volumes, allowing the incorporation of large amounts of drugs, protecting them from deactivation and degradation processes acting as an excellent nanoplatform for drug delivery. However, the functional MSNs do not present the ability to transport the therapeutics without any leakage until reach the targeted cells causing side effects. On the other hand, the hydroxyls groups available on MSNs surface allows the conjugation of specific molecules which can binds to the overexpressed Enhanced Growth Factor Receptor (EGFR) in many tumors, representing a potential strategy for the cancer treatment. Beyond that, the targeting molecules conjugate onto mesoporous surface increase its cell internalization and act as gatekeepers blocking the mesopores controlling the drug release. In this context, multifunctional MSNs emerge as stimuli-responsive controlled drug delivery systems (CDDS) to overcome drawbacks as low internalization, premature release before to reach the region of interest, several side effects and low effectiveness of the current treatments. This review presents an overview of MSNs fabrication methods and its properties that affects drug delivery as well as stimuli-responsive CDDS for cancer treatment., (Copyright © 2019 Elsevier B.V. All rights reserved.)
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- 2019
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37. An Unusual Cause of Skin Rash in Crohn's Disease.
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Chebli JMF, de Oliveira Moreira B, and da Rocha Ribeiro TC
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- Adult, Female, Humans, Crohn Disease drug therapy, Drug Eruptions etiology, Exanthema chemically induced, Gastrointestinal Agents adverse effects, Infliximab adverse effects, Vasculitis, Leukocytoclastic, Cutaneous chemically induced
- Published
- 2018
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38. Impact of superimposed Clostridium difficile infection in Crohn's or ulcerative colitis flares in the outpatient setting.
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Garcia PG, Chebli LA, da Rocha Ribeiro TC, Gaburri PD, de Lima Pace FH, Barbosa KVBD, Costa LA, de Almeida Cruz W, de Assis IC, Moraes BRM, Zanini A, and Chebli JMF
- Subjects
- Adult, Age Factors, Anti-Bacterial Agents therapeutic use, Anti-Inflammatory Agents adverse effects, Brazil epidemiology, Clostridium Infections diagnosis, Clostridium Infections drug therapy, Clostridium Infections microbiology, Colitis, Ulcerative drug therapy, Crohn Disease diagnosis, Crohn Disease drug therapy, Disease Progression, Female, Humans, Infliximab adverse effects, Male, Middle Aged, Prevalence, Prospective Studies, Recurrence, Risk Factors, Sex Factors, Steroids adverse effects, Time Factors, Treatment Outcome, Vancomycin therapeutic use, Ambulatory Care, Clostridium Infections epidemiology, Colitis, Ulcerative epidemiology, Crohn Disease epidemiology
- Abstract
Purpose: The prospective assessment of Clostridium difficile infection (CDI) impact in inflammatory bowel disease (IBD) flare in outpatient setting has been poorly investigated. We aimed to evaluate the prevalence and the associated factors with CDI in IBD outpatients presenting colitis flares as well as the outcomes following treatment., Methods: In this prospective cohort study, conducted from October, 2014, to July, 2016, 120 IBD patients (55% presenting colitis flare) and 40 non-IBD controls were assessed for CDI. Multivariate regression analysis was performed to identify predictors of CDI. Outcome analysis was estimated for recurrent CDI, hospitalization, colectomy, and CDI-associated mortality., Results: The number of patients with CDI was significantly higher in IBD patients experiencing flares than in both inactive IBD and non-IBD groups (28.8 vs. 5.6 vs. 0%, respectively; p = 0.001). Females (OR = 1.39, 95% CI, 1.13-17.18), younger age (OR = 0.77, 95% CI, 0.65-0.92), steroid treatment (OR = 7.42, 95% CI, 5.17-40.20), and infliximab therapy (OR = 2.97, 95% CI, 1.99-24.63) were found to be independently associated with CDI. There was a dose-related increase in the risks of CDI on patients which had taken prednisone. Those treated with vancomycin had a satisfactory response to therapy, but 21% presented recurrent CDI and 16% were hospitalized. Neither necessity of colectomy nor mortality was noticed in any patient during the investigation., Conclusions: In IBD outpatients presenting colitis flares, CDI is highly prevalent. Females, younger age, infliximab, and notably steroid therapy were independently associated with CDI. Most patients with CDI experienced mild-to-moderate disease, and prompt treatment with vancomycin was highly effective, which seems to reduce the serious complication risks.
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- 2018
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39. The electrostatic embedding contribution to DFT calculations of ligand-amino acid residues interaction.
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da Silva Ribeiro TC, Lyra ML, and Manzoni V
- Abstract
In this work, we demonstrate that the inclusion of long-range interactions has a significant impact on the estimation of ligand-protein binding energies. Within the scope of the electrostatically embedded adaptation of the molecular fragmentation with conjugated caps (EE-AMFCC) scheme, we unveil the role played by long-range contributions in distinct levels of quantum mechanical calculations. As a prototypical system, we consider ibuprofen coupled to the human serum albumin. In particular, we show that some relevant ligand-residue interaction energies can only be accurately captured in density functional theory (DFT) approaches when the electrostatic background is properly represented by an explicit point charge distribution. Graphical Abstract (left) The binding site FA3/FA4 of HSA containing the attached IBU. (right) Absolute value of difference between the biding energies calculated including the electrostatic embedding and the energies calculated without the electrostatic embedding using the HF, B3LYP, CAM-B3LYP, and MP2 methodologies.
- Published
- 2018
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40. Advanced age does not increase morbidity in pancreaticoduodenectomy.
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Namur GN, Dantas ACB, Jureidini R, Ribeiro TC, Ribeiro Junior U, Figueira E, Cecconello I, and Bacchella T
- Abstract
Background: Due to rising life expectancy of population, very complex surgical procedures such as pancreaticoduodenectomy (PD), are more commonly being performed in elderly patients. The objective of this study was to evaluate the safety of PD in patients older than 75 years old and the risk factors associated with severe complications., Methods: Patients who underwent PD for periampullary tumors were retrospectively reviewed and divided into two groups, A (<75 years) and B (>75 years). The primary endpoint was severe postoperative complications (Clavien 3 or greater). Secondary endpoints were mortality and any complications., Results: Ninety consecutive patients underwent PD for periampullary tumors in the studied period, 70 in group A and 20 in group B. Clinical and pathological characteristics of both groups were equivalents except for age. There were no difference regarding the incidence of severe complications (17% vs. 10%, P=0.72) or all complications (50% vs. 50%, P>0.999). Although mortality was greater in group A (8.6% vs. 0%), it was not statistically significant (P=0.333). On multivariate analyses, only male sex, obesity and American Society of Anesthesiology Score of 3 or 4 were associated with severe postoperative complications., Conclusions: Poor clinical status, obesity and male gender are associated with severe complications in PD, but not age greater than 75 years, therefore PD can be considered safe in elderly patients and age itself should not be a contraindication for PD., Competing Interests: Conflicts of Interest: The authors have no conflicts of interest to declare.
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- 2018
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41. In vitro susceptibility of the oomycete Pythium insidiosum to metallic compounds containing cadmium, lead, copper, manganese or zinc.
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Ribeiro TC, Weiblen C, Botton SA, Pereira DIB, de Jesus FPK, Verdi CM, Gressler LT, Sangioni LA, and Santurio JM
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- Acetates pharmacology, Antifungal Agents chemistry, Cadmium pharmacology, Copper pharmacology, In Vitro Techniques, Manganese pharmacology, Microbial Sensitivity Tests, Organometallic Compounds pharmacology, Pythium isolation & purification, Zinc Sulfate pharmacology, Antifungal Agents pharmacology, Pythium drug effects
- Abstract
Pythium insidiosum is an aquatic oomycete that causes pythiosis, an important and severe disease of difficult treatment that affects humans, domestic and wild animals. This infection is often described in horses in Brazil and humans in Thailand. In clinical practice, we have observed many cases that do not respond to available therapies, indicating the need to explore alternative therapeutic approaches. In this sense, studies using metal compounds in conjunction with available antimicrobial agents have been demonstrated greater antimicrobial activity. Thus, in this research, we tested in vitro activities of metallic compounds containing cadmium, lead, copper, manganese, or zinc against 23 isolates of P. insidiosum. The assays were performed by broth microdilution based on CLSI M38-A2 document. The minimum inhibitory and fungicidal concentrations were established for all isolates. Copper acetate and cadmium acetate showed the highest inhibitory effects, with minimal inhibitory concentration ranging from 4-64 μg/ml and 16-256 μg/ml, respectively. The mean geometric for minimal fungicidal concentrations were, respectively, 26 μg/ml and 111.43 μg/ml for copper acetate and cadmium acetate. These results suggest that copper and cadmium can inhibit P. insidiosum growth, highlighting the greater inhibitory activity of copper acetate. In addition, our results propose that copper and/or cadmium compounds can be used in upcoming researches to formulate effective new complexed drugs against P. insidiosum in in vitro and in vivo experimental models., (© The Author 2016. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2017
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42. Procedures and compliance of a video modeling applied behavior analysis intervention for Brazilian parents of children with autism spectrum disorders.
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Bagaiolo LF, Mari JJ, Bordini D, Ribeiro TC, Martone MCC, Caetano SC, Brunoni D, Brentani H, and Paula CS
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- Adult, Autism Spectrum Disorder psychology, Brazil, Child, Child, Preschool, Female, Humans, Male, Parent-Child Relations, Parents psychology, Applied Behavior Analysis methods, Autism Spectrum Disorder therapy, Child Behavior psychology, Parenting psychology, Program Evaluation methods, Videotape Recording
- Abstract
Video modeling using applied behavior analysis techniques is one of the most promising and cost-effective ways to improve social skills for parents with autism spectrum disorder children. The main objectives were: (1) To elaborate/describe videos to improve eye contact and joint attention, and to decrease disruptive behaviors of autism spectrum disorder children, (2) to describe a low-cost parental training intervention, and (3) to assess participant's compliance. This is a descriptive study of a clinical trial for autism spectrum disorder children. The parental training intervention was delivered over 22 weeks based on video modeling. Parents with at least 8 years of schooling with an autism spectrum disorder child between 3 and 6 years old with an IQ lower than 70 were invited to participate. A total of 67 parents fulfilled the study criteria and were randomized into two groups: 34 as the intervention and 33 as controls. In all, 14 videos were recorded covering management of disruptive behaviors, prompting hierarchy, preference assessment, and acquisition of better eye contact and joint attention. Compliance varied as follows: good 32.4%, reasonable 38.2%, low 5.9%, and 23.5% with no compliance. Video modeling parental training seems a promising, feasible, and low-cost way to deliver care for children with autism spectrum disorder, particularly for populations with scarce treatment resources.
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- 2017
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43. Microevolutionary analyses of Pythium insidiosum isolates of Brazil and Thailand based on exo-1,3-β-glucanase gene.
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Ribeiro TC, Weiblen C, de Azevedo MI, de Avila Botton S, Robe LJ, Pereira DI, Monteiro DU, Lorensetti DM, and Santurio JM
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- Brazil, Evolution, Molecular, Genetic Variation, Phylogeny, Pythium enzymology, Thailand, Glucan 1,3-beta-Glucosidase genetics, Pythium genetics
- Abstract
Pythium insidiosum is an important oomycete due to its ability to infect humans and animals. It causes pythiosis, a disease of difficult treatment that occurs more frequently in humans in Thailand and in horses in Brazil. Since cell-wall components are frequently related to host shifts, we decided here to use sequences from the exo-1,3-β-glucanase gene (exo1), which encodes an immunodominant protein putatively involved in cell wall remodeling, to investigate the microevolutionary relationships of Brazilian and Thai isolates of P. insidiosum. After neutrality ratification, the phylogenetic analyses performed through Maximum parsimony (MP), Neighbor-joining (NJ), Maximum likelihood (ML), and Bayesian analysis (BA) strongly supported Thai isolates being paraphyletic in relation to those from Brazil. The structure recovered by these analyses, as well as by Spatial Analysis of Molecular Variance (SAMOVA), suggests the subdivision of P. insidiosum into three clades or population groups, which are able to explain almost 81% of the variation encountered for exo1. Moreover, the two identified Thai clades were almost as strongly differentiated between each other, as they were from the Brazilian clade, suggesting an ancient Asian subdivision. The derived positioning in the phylogenetic tree, linked to the lower diversity values and the recent expansion signs detected for the Brazilian clade, further support this clade as derived in relation to the Asian populations. Thus, although some patterns presented here are compatible with those recovered with different molecular markers, exo1 was revealed to be a good marker for studying evolution in Pythium, providing robust and strongly supported results with regard to the patterns of origin and diversification of P. insidiosum., (Copyright © 2016 Elsevier B.V. All rights reserved.)
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- 2017
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44. Myoepithelioma of the Nasal Septum: A Rare Case of Extrasalivary Gland Involvement.
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da Cunha GB, Camurugy TC, Ribeiro TC, Costa NN, Azevedo AC, Vinhaes ES, and de Andrade NA
- Abstract
Introduction . The myoepithelioma is a rare benign tumor, most frequently found in the salivary glands. The extrasalivary gland involvement is even rarer and few cases involving the nasal cavity have been reported in the literature. Case Report . MES, a 54-year-old woman, complaining of progressive nasal obstruction and mild epistaxis through the right nostril which had developed 1 year previously. Computed tomography scan showed tumor with heterogeneous contrast enhancement occupying the right nasal cavity, moving contralaterally in the nasal septum. Excisional biopsy was performed through endoscopic surgery of the mass that was inserted at the nasal septum. Pathological and immunohistochemical exams concluded myoepithelioma. Discussion . The main symptoms of nasal myoepitheliomas are nasal obstruction and epistaxis. Immunohistochemistry is necessary to confirm the diagnosis, typically positive for cytokeratin and S-100, calponin, smooth muscle actin, myosin, vimentin, glial fibrillary acidic protein (GFAP), and carcinoembryonic antigen. The main marker for myoepithelioma is the S-100 protein. In our case, it was positive for cytokeratin, S-100, calponin, actin smooth muscle, and GFAP. In all cases reported in the literature surgical treatment was performed and the recurrence was associated with incomplete tumor resection. Final Comments . The myoepithelioma is a rare differential diagnosis of nasal tumors and its treatment is the total lesion excision., Competing Interests: The authors declared no conflict of interests with respect to the authorship and/or publication of this article.
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- 2017
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45. Performance of microscopy and ELISA for diagnosing Giardia duodenalis infection in different pediatric groups.
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Silva RK, Pacheco FT, Martins AS, Menezes JF, Costa-Ribeiro H Jr, Ribeiro TC, Mattos ÂP, Oliveira RR, Soares NM, and Teixeira MC
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- Child, Child Day Care Centers, Cryptosporidiosis parasitology, Cryptosporidium isolation & purification, Cytoskeletal Proteins genetics, DNA, Protozoan genetics, Diarrhea parasitology, Entamoeba histolytica isolation & purification, Entamoebiasis parasitology, Feces parasitology, Female, Giardia lamblia isolation & purification, Giardiasis parasitology, Humans, Intestinal Diseases, Parasitic parasitology, Male, Malnutrition parasitology, Protozoan Proteins genetics, Sensitivity and Specificity, Sugar Alcohol Dehydrogenases genetics, Cryptosporidiosis diagnosis, Entamoebiasis diagnosis, Enzyme-Linked Immunosorbent Assay methods, Giardiasis diagnosis, Intestinal Diseases, Parasitic diagnosis, Microscopy methods
- Abstract
Techniques for Giardia diagnosis based on microscopy are usually applied as routine laboratory testing; however, they typically exhibit low sensitivity. This study aimed to evaluate Giardia duodenalis and other intestinal parasitic infections in different pediatric groups, with an emphasis on the comparison of Giardia diagnostic techniques. Feces from 824 children from different groups (diarrheic, malnourished, with cancer and from day care) were examined by microscopy and ELISA for Giardia, Cryptosporidium sp. and Entamoeba histolytica coproantigen detection. Giardia-positive samples from day-care children, identified by either microscopy or ELISA, were further tested by PCR targeting of the β-giardin and Gdh genes. Statistically significant differences (P<0.05) were observed when comparing the frequency of each protozoan among the groups. Giardia duodenalis was more frequent in day-care children and Cryptosporidium sp. in diarrheic and malnourished groups; infections by Entamoeba histolytica were found only in children with diarrhea. Considering positivity for Giardia by at least one method, ELISA was found to be more sensitive than microscopy (97% versus 55%). To examine discrepancies among the diagnostic methods, 71 Giardia-positive stool samples from day-care children were tested by PCR; of these, DNA was amplified from 51 samples (77.4%). Concordance of positivity between microscopy and ELISA was found for 48 samples, with 43 confirmed by PCR. Parasite DNA was amplified from eleven of the 20 Giardia samples (55%) identified only by ELISA. This study shows the higher sensitivity of ELISA over microscopy for Giardia diagnosis when a single sample is analyzed and emphasizes the need for methods based on coproantigen detection to identify this parasite in diarrheic fecal samples., (Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2016
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46. Effects of Type 1 Insulin-Like Growth Factor Receptor Silencing in a Human Adrenocortical Cell Line.
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Ribeiro TC, Jorge AA, Montenegro LR, Almeida MQ, Ferraz-de-Souza B, Nishi MY, Mendonca BB, and Latronico AC
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- Apoptosis genetics, Cell Line, Cell Proliferation, Down-Regulation genetics, Humans, RNA, Messenger genetics, RNA, Messenger metabolism, RNA, Small Interfering metabolism, Receptor, IGF Type 1 genetics, Adrenal Cortex cytology, Gene Silencing, Receptor, IGF Type 1 metabolism
- Abstract
Type 1 insulin-like growth factor receptor (IGF-1R) is overexpressed in a variety of human cancers, including adrenocortical tumors. The aim of the work was to investigate the effects of IGF-1R downregulation in a human adrenocortical cell line by small interfering RNA (siRNA). The human adrenocortical tumor cell line NCI H295R was transfected with 2 specific IGF1R siRNAs (# 1 and # 2) and compared with untreated cells and a negative control siRNA. IGF1R expression was determined by quantitative reverse-transcription PCR (qRTPCR) and Western blot. The effects of IGF-1R downregulation on cell proliferation and apoptosis were assessed. IGF-1R levels were significantly decreased in cells treated with IGF-1R siRNA # 1 or # 2. Relative expression of IGF1R mRNA decreased approximately 50% and Western blot analysis revealed a 30% of reduction in IGF-1R protein. Downregulation of this gene resulted in 40% reduction in cell growth in vitro and 45% increase in apoptosis using siRNA # 2. These findings demonstrate that decreasing IGF-1R mRNA and protein expression in NCI H295R cells can partially inhibit adrenal tumor cell growth in vitro. Targeting IGF1R is a promising therapy for pediatric malignant adrenocortical tumor and can still be an option for adult adrenocortical cancer based on personalized genomic tumor profiling., (© Georg Thieme Verlag KG Stuttgart · New York.)
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- 2016
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47. Evaluation of microvessel density and p53 expression in pancreatic adenocarcinoma.
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Jureidini R, da Cunha JE, Takeda F, Namur GN, Ribeiro TC, Patzina R, Figueira ER, Ribeiro U Jr, Bacchella T, and Cecconello I
- Subjects
- Carcinoma, Pancreatic Ductal blood supply, Carcinoma, Pancreatic Ductal metabolism, Carcinoma, Pancreatic Ductal mortality, Female, Humans, Male, Margins of Excision, Middle Aged, Neoplasm Staging, Pancreatic Neoplasms blood supply, Pancreatic Neoplasms metabolism, Pancreatic Neoplasms mortality, Prognosis, Survival Rate, Carcinoma, Pancreatic Ductal pathology, Microvessels pathology, Pancreatic Neoplasms pathology, Tumor Suppressor Protein p53 metabolism
- Abstract
Objective: To evaluate the prognostic significance of microvessel density and p53 expression in pancreatic cancer., Methods: Between 2008 and 2012, 49 patients with pancreatic adenocarcinoma underwent resection with curative intention. The resected specimens were immunohistochemically stained with anti-p53 and anti-CD34 antibodies. Microvessel density was assessed by counting vessels within ten areas of each tumoral section a highpower microscope., Results: The microvessel density ranged from 21.2 to 54.2 vessels/mm2. Positive nuclear staining for p53 was found in 20 patients (40.6%). The overall median survival rate after resection was 24.1 months and there were no differences in survival rates related to microvessel density or p53 positivity. Microvessel density was associated with tumor diameter greater than 3.0 cm and with R0 resection failure., Conclusions: Microvessel density was associated with R1 resection and with larger tumors. p53 expression was not correlated with intratumoral microvessel density in pancreatic adenocarcinoma.
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- 2016
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48. MINIMALLY INVASIVE SURGERY FOR PSEUDOPAPILLARY NEOPLASM OF THE PANCREAS.
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Namur GN, Ribeiro TC, Souto MM, Figueira ER, Bacchella T, and Jureidini R
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- Adolescent, Adult, Female, Humans, Middle Aged, Minimally Invasive Surgical Procedures, Retrospective Studies, Young Adult, Laparoscopy, Pancreatectomy methods, Pancreatic Neoplasms surgery
- Abstract
Background: Solid pseudopapillary pancreatic neoplasia is usually a large well-circumscribed pancreatic mass, with cystic and solid areas more frequently found in young women. It is a benign pancreatic neoplasia in most cases, therefore minimally invasive surgery could be an interesting approach., Aim: Evaluate the results of minimally invasive surgery for this neoplasia., Methods: Patients with this tumor who underwent minimally invasive pancreatectomies between 2009 and 2015 in a single institution, were analyzed regarding demographic, clinical-pathological futures, post-operative morbidity and disease-free survival., Results: All were women, and their median age was 39 (18-54) years. Two patients with tumor in the head of the pancreas underwent laparoscopic pancreaticoduodenectomy, and another one underwent laparoscopic enucleation. Two patients with tumor in the neck underwent central pancreatectomy. Distal pancreatectomies were performed in the other five, one with splenic preservation. None required blood transfusion or conversion to open surgery. Two (20%) developed clinical relevant pancreatic fistulas, requiring readmission. Median length of postoperative hospital stay was five days (2-8). All resection margins were negative. Patients were followed for a median of 38 months (14-71), and there was no recurrence., Conclusions: Minimally invasive surgery for solid pseudopapillary pancreatic neoplasia is feasible for tumors in different locations in the pancreas. It was associated with acceptable morbidity and respected the oncologic principles for treatment.
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- 2016
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49. Cow's milk-based beverage consumption in 1- to 4-year-olds and allergic manifestations: an RCT.
- Author
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Pontes MV, Ribeiro TC, Ribeiro H, de Mattos AP, Almeida IR, Leal VM, Cabral GN, Stolz S, Zhuang W, and Scalabrin DM
- Subjects
- Animals, Biomarkers blood, Brazil, Child, Preschool, Dietary Supplements, Docosahexaenoic Acids administration & dosage, Docosahexaenoic Acids analysis, Double-Blind Method, Female, Follow-Up Studies, Humans, Incidence, Infant, Interleukin-10 blood, Male, Micronutrients administration & dosage, Prebiotics administration & dosage, Prospective Studies, Socioeconomic Factors, Transforming Growth Factor beta1 blood, Treatment Outcome, Trisaccharides administration & dosage, Trisaccharides analysis, beta-Glucans administration & dosage, beta-Glucans analysis, Beverages, Diarrhea epidemiology, Hypersensitivity epidemiology, Milk, Respiratory Tract Infections epidemiology
- Abstract
Background: Nutrients such as docosahexaenoic acid (DHA), prebiotics and β-glucan have been associated with reduced incidence of respiratory illnesses and allergic manifestations (AM). Our objective was to assess if consumption of a cow's milk-based beverage with these and other nutrients supports respiratory, gastrointestinal, and skin health in otherwise well-nourished, healthy children., Methods: In this double-blind, randomized, controlled trial, healthy children (1-4 years of age) from two daycare centers in Brazil were fed three servings/day of a cow's milk-based beverage (CMBB; n = 125) containing DHA, the prebiotics polydextrose (PDX) and galactooligosaccharides (GOS), β-glucan, and other key nutrients, or a control cow's milk-based beverage (control; n = 131) for up to 28 weeks. Occurrence of respiratory infections, diarrheal disease and AM was assessed by study pediatricians and the number of episodes were analyzed with the Cochran-Mantel-Haenszel test and the Andersen-Gill model., Results: The CMBB group had fewer episodes of AM, which included allergic rhinitis or conjunctivitis, wheezing, allergic cough, eczema and urticaria, compared to the control group (p = 0.021). The hazard ratio for increased number of episodes of AM was lower in the CMBB group compared to control (HR, 0.64; 95 % CI 0.47-0.89; p = 0.007). There was no difference in the incidence of respiratory infections and diarrheal disease between groups., Conclusion: A cow's milk-based beverage containing DHA, PDX/GOS, and yeast β-glucan, and supplemented with micronutrients, including zinc, vitamin A and iron, when consumed 3 times/day for 28 weeks by healthy 1- to 4-year-old children was associated with fewer episodes of allergic manifestations in the skin and the respiratory tract., Trial Registration: registration number: NCT01431469.
- Published
- 2016
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50. In Vitro and In Vivo Antimicrobial Activities of Minocycline in Combination with Azithromycin, Clarithromycin, or Tigecycline against Pythium insidiosum.
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Jesus FP, Loreto ÉS, Ferreiro L, Alves SH, Driemeier D, Souza SO, França RT, Lopes ST, Pilotto MB, Ludwig A, Azevedo MI, Ribeiro TC, Tondolo JS, and Santurio JM
- Subjects
- Animals, Drug Administration Schedule, Drug Synergism, Drug Therapy, Combination, Microbial Sensitivity Tests, Multivariate Analysis, Pythiosis microbiology, Pythiosis pathology, Pythium genetics, Pythium growth & development, Pythium isolation & purification, Rabbits, Skin drug effects, Skin microbiology, Skin pathology, Tigecycline, Antifungal Agents pharmacology, Azithromycin pharmacology, Clarithromycin pharmacology, Minocycline analogs & derivatives, Minocycline pharmacology, Pythiosis drug therapy, Pythium drug effects
- Abstract
The present study investigated the in vitro and the in vivo interactions among azithromycin, clarithromycin, minocycline, and tigecycline against Pythium insidiosum. In vitro antimicrobial activities were determined by the broth microdilution method in accordance with CLSI document M38-A2, and the antibiotic interactions were assayed using the checkerboard MIC format. In vivo efficacy was determined using a rabbit infection model. The geometric mean MICs of azithromycin, clarithromycin, minocycline, and tigecycline against P. insidiosum were, respectively, 1.91, 1.38, 0.91, and 0.79 μg/ml. By checkerboard testing, all combinations resulted in in vitro synergistic interactions (>60%). Antagonism was not observed. The in vivo studies showed that azithromycin (20 mg/kg/day twice daily) alone or in combination with minocycline (10 mg/kg/day twice daily) significantly decreased the fungal burden. This study demonstrates that azithromycin possesses potent curative efficacy against subcutaneous pythiosis in the rabbit model., (Copyright © 2015, American Society for Microbiology. All Rights Reserved.)
- Published
- 2015
- Full Text
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