89 results on '"Freitas, M"'
Search Results
2. Large-scale cosmic ray anisotropies with 19 years of data from the Pierre Auger Observatory
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The Pierre Auger Collaboration, Halim, A. Abdul, Abreu, P., Aglietta, M., Allekotte, I., Cheminant, K. Almeida, Almela, A., Aloisio, R., Alvarez-Muñiz, J., Ambrosone, A., Yebra, J. Ammerman, Anastasi, G. A., Anchordoqui, L., Andrada, B., Dourado, L. Andrade, Andringa, S., Apollonio, L., Aramo, C., Ferreira, P. R. Araújo, Arnone, E., Velázquez, J. C. Arteaga, Assis, P., Avila, G., Avocone, E., Bakalova, A., Barbato, F., Mocellin, A. Bartz, Bellido, J. A., Berat, C., Bertaina, M. E., Bhatta, G., Bianciotto, M., Biermann, P. L., Binet, V., Bismark, K., Bister, T., Biteau, J., Blazek, J., Bleve, C., Blümer, J., Boháčová, M., Boncioli, D., Bonifazi, C., Arbeletche, L. Bonneau, Borodai, N., Brack, J., Orchera, P. G. Brichetto, Briechle, F. L., Bueno, A., Buitink, S., Buscemi, M., Büsken, M., Bwembya, A., Caballero-Mora, K. S., Cabana-Freire, S., Caccianiga, L., Campuzano, F., Caruso, R., Castellina, A., Catalani, F., Cataldi, G., Cazon, L., Cerda, M., Čermáková, B., Cermenati, A., Chinellato, J. A., Chudoba, J., Chytka, L., Clay, R. W., Cerutti, A. C. Cobos, Colalillo, R., Conceição, R., Condorelli, A., Consolati, G., Conte, M., Convenga, F., Santos, D. Correia dos, Costa, P. J., Covault, C. E., Cristinziani, M., Sanchez, C. S. Cruz, Dasso, S., Daumiller, K., Dawson, B. R., de Almeida, R. M., de Errico, B., de Jesús, J., de Jong, S. J., Neto, J. R. T. de Mello, De Mitri, I., de Oliveira, J., Franco, D. de Oliveira, de Palma, F., de Souza, V., De Vito, E., Del Popolo, A., Deligny, O., Denner, N., Deval, L., di Matteo, A., Dobrigkeit, C., D'Olivo, J. C., Mendes, L. M. Domingues, Dorosti, Q., Anjos, J. C. dos, Anjos, R. C. dos, Ebr, J., Ellwanger, F., Emam, M., Engel, R., Epicoco, I., Erdmann, M., Etchegoyen, A., Evoli, C., Falcke, H., Farrar, G., Fauth, A. C., Fehler, T., Feldbusch, F., Fernandes, A., Fick, B., Figueira, J. M., Filip, P., Filipčič, A., Fitoussi, T., Flaggs, B., Fodran, T., Freitas, M., Fujii, T., Fuster, A., Galea, C., García, B., Gaudu, C., Ghia, P. L., Giaccari, U., Gobbi, F., Gollan, F., Golup, G., Berisso, M. Gómez, Vitale, P. F. Gómez, Gongora, J. P., González, J. M., González, N., Góra, D., Gorgi, A., Gottowik, M., Guarino, F., Guedes, G. P., Guido, E., Gülzow, L., Hahn, S., Hamal, P., Hampel, M. R., Hansen, P., Harvey, V. M., Haungs, A., Hebbeker, T., Hojvat, C., Hörandel, J. R., Horvath, P., Hrabovský, M., Huege, T., Insolia, A., Isar, P. G., Janecek, P., Jilek, V., Jurysek, J., Kampert, K. -H., Keilhauer, B., Khakurdikar, A., Covilakam, V. V. Kizakke, Klages, H. O., Kleifges, M., Knapp, F., Köhler, J., Krieger, F., Kubatova, M., Kunka, N., Lago, B. L., Langner, N., de Oliveira, M. A. Leigui, Lema-Capeans, Y., Letessier-Selvon, A., Lhenry-Yvon, I., Lopes, L., Lundquist, J. P., Payeras, A. Machado, Mandat, D., Manning, B. C., Mantsch, P., Mariani, F. M., Mariazzi, A. G., Mariş, I. C., Marsella, G., Martello, D., Martinelli, S., Bravo, O. Martínez, Martins, M. A., Mathes, H. -J., Matthews, J., Matthiae, G., Mayotte, E., Mayotte, S., Mazur, P. O., Medina-Tanco, G., Meinert, J., Melo, D., Menshikov, A., Merx, C., Michal, S., Micheletti, M. I., Miramonti, L., Mollerach, S., Montanet, F., Morejon, L., Mulrey, K., Mussa, R., Namasaka, W. M., Negi, S., Nellen, L., Nguyen, K., Nicora, G., Niechciol, M., Nitz, D., Nosek, D., Novotny, V., Nožka, L., Nucita, A., Núñez, L. A., Oliveira, C., Palatka, M., Pallotta, J., Panja, S., Parente, G., Paulsen, T., Pawlowsky, J., Pech, M., Pękala, J., Pelayo, R., Pelgrims, V., Pereira, L. A. S., Martins, E. E. Pereira, Bertolli, C. Pérez, Perrone, L., Petrera, S., Petrucci, C., Pierog, T., Pimenta, M., Platino, M., Pont, B., Pothast, M., Shahvar, M. Pourmohammad, Privitera, P., Prouza, M., Querchfeld, S., Rautenberg, J., Ravignani, D., Akim, J. V. Reginatto, Reuzki, A., Ridky, J., Riehn, F., Risse, M., Rizi, V., Rodriguez, E., Rojo, J. Rodriguez, Roncoroni, M. J., Rossoni, S., Roth, M., Roulet, E., Rovero, A. C., Saftoiu, A., Saharan, M., Salamida, F., Salazar, H., Salina, G., Sampathkumar, P., Gomez, J. D. Sanabria, Sánchez, F., Santos, E. M., Santos, E., Sarazin, F., Sarmento, R., Sato, R., Schäfer, C. M., Scherini, V., Schieler, H., Schimassek, M., Schimp, M., Schmidt, D., Scholten, O., Schoorlemmer, H., Schovánek, P., Schröder, F. G., Schulte, J., Schulz, T., Sciutto, S. J., Scornavacche, M., Sedoski, A., Segreto, A., Sehgal, S., Shivashankara, S. U., Sigl, G., Simkova, K., Simon, F., Šmída, R., Sommers, P., Squartini, R., Stadelmaier, M., Stanič, S., Stasielak, J., Stassi, P., Strähnz, S., Straub, M., Suomijärvi, T., Supanitsky, A. D., Svozilikova, Z., Szadkowski, Z., Tairli, F., Tapia, A., Taricco, C., Timmermans, C., Tkachenko, O., Tobiska, P., Peixoto, C. J. Todero, Tomé, B., Torrès, Z., Travaini, A., Travnicek, P., Tueros, M., Unger, M., Uzeiroska, R., Vaclavek, L., Vacula, M., Galicia, J. F. Valdés, Valore, L., Varela, E., Vašíčková, V., Vásquez-Ramírez, A., Veberič, D., Quispe, I. D. Vergara, Verzi, V., Vicha, J., Vink, J., Vorobiov, S., Watanabe, C., Watson, A. A., Weindl, A., Weitz, M., Wiencke, L., Wilczyński, H., Wittkowski, D., Wundheiler, B., Yue, B., Yushkov, A., Zapparrata, O., Zas, E., Zavrtanik, D., and Zavrtanik, M.
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Astrophysics - High Energy Astrophysical Phenomena - Abstract
Results are presented for the measurement of large-scale anisotropies in the arrival directions of ultra-high-energy cosmic rays detected at the Pierre Auger Observatory during 19 years of operation, prior to AugerPrime, the upgrade of the Observatory. The 3D dipole amplitude and direction are reconstructed above $4\,$EeV in four energy bins. Besides the established dipolar anisotropy in right ascension above $8\,$EeV, the Fourier amplitude of the $8$ to $16\,$EeV energy bin is now also above the $5\sigma$ discovery level. No time variation of the dipole moment above $8\,$EeV is found, setting an upper limit to the rate of change of such variations of $0.3\%$ per year at the $95\%$ confidence level. Additionally, the results for the angular power spectrum are shown, demonstrating no other statistically significant multipoles. The results for the equatorial dipole component down to $0.03\,$EeV are presented, using for the first time a data set obtained with a trigger that has been optimized for lower energies. Finally, model predictions are discussed and compared with observations, based on two source emission scenarios obtained in the combined fit of spectrum and composition above $0.6\,$EeV., Comment: Minor modifications, accepted for publication in Astrophysical Journal
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- 2024
3. Long-time dynamics and singular limit of a shear beam model
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Freitas, M. M., Almeida, Jr., D. S., Ramos, A. J. A., Dos Santos, M. J., and Caljaro, R. Q.
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- 2024
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4. Genomic and physiological characterization of Kitasatospora sp. nov., an actinobacterium with potential for biotechnological application isolated from Cerrado soil
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Cunha-Ferreira, I. C., Vizzotto, C. S., Freitas, M. A. M., Peixoto, J., Carvalho, L. S., Tótola, M. R., Thompson, F. L., and Krüger, R. H.
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- 2024
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5. On the stability of the swelling porous elastic soils with fluid saturation and Gurtin–Pipkin thermal law
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Ramos, A. J. A., Nonato, C. A., Raposo, C. A., Freitas, M. M., and Coayla-Teran, E. A.
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- 2024
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6. The Rehabilitation of Buildings from the Perspective of Circular Economy Principles
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Freitas, M. C. D., Tavares, S. F., Bragança, L., Barbosa, S., Chen, Sheng-Hong, Series Editor, di Prisco, Marco, Series Editor, Vayas, Ioannis, Series Editor, Bragança, Luís, editor, Cvetkovska, Meri, editor, Askar, Rand, editor, and Ungureanu, Viorel, editor
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- 2024
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7. Dynamics of a coupled nonlinear wave equations with fractional Laplacian damping and Fourier’s law
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Dos Santos, M. J., Ramos, A. J. A., and Freitas, M. M.
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- 2024
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8. Electrochemical immunosensors: Application to surveillance of contaminants of emerging concern in aquatic ecosystems
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Torrinha, A., Freitas, M., Dibo, V., and Morais, S.
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- 2024
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9. How trustworthy is online dental information for individuals with Down syndrome from Ibero‐American countries?
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Rey‐Otero, G., Diniz‐Freitas, M., Rivas‐Mundiña, B., Varela‐Aneiros, I., Sande‐López, L., Limeres‐Posse, J., and García‐Mato, E.
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INTERNET content ,DOWN syndrome ,DENTAL care ,WEBSITES ,SEARCH engines - Abstract
Background: Internet has become an indispensable source of health‐related information. However, several studies have shown there to be a lack of quality control for webpages related to disability. Specifically, available content concerning Down syndrome (DS) and dentistry is limited and of dubious quality. Objective: The aim of the present study was to assess the quality of online content in Spanish and Portuguese on dental care for individuals with DS. Methods: A simultaneous search in Google and Bing using the terms "Down syndrome" and "odontology/dentist/dental treatment" in Spanish and Portuguese was conducted in seven Ibero‐American countries (Argentina, Brazil, Chile, Colombia, Spain, Mexico, and Portugal). The first 100 consecutive pages of results from the three combinations of terms in each of the search engines were accessed and selected by applying conventional exclusion criteria. The selected pages were classified according to their authorship, specificity and dissemination potential. The quality of the online content was assessed using the DISCERN questionnaire and the Questionnaire to Evaluate Health Web Sites According to European Criteria (QEEC). The presence of the Health On Net (HON) and Accredited Medical Website (AMW) seals was also assessed. Results: The mean DISCERN score was 2.51 ± 0.85 and 2.57 ± 0.86 for the Spanish and Portuguese webpages, respectively. The mean readability score was 3.43 ± 1.26 and 3.25 ± 1.08 for the Spanish and Portuguese webpages, respectively. None of the selected webpages presented the HONcode or AMW trust seals. Conclusions: The content available online in Spanish and Portuguese regarding Down syndrome and dentistry is scarce and of highly questionable quality. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Use of thermography in the long‐term evaluation of scrotal surface temperature and its impact on seminal quality in stallions
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Freitas, M. L., primary, Viana, J. H. M., additional, Dode, M. A. N., additional, Braga, T. R. C., additional, and de Oliveira, R. A., additional
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- 2024
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11. Hydrogen balloon transportation: A cheap and efficient mode to transport hydrogen
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Hunt, J., Zakeri, B., Nascimento, A., de Freitas, M., Amorim, F., Guo, F., Witkamp, G.-J., van Ruijven, B., Wada, Y., Hunt, J., Zakeri, B., Nascimento, A., de Freitas, M., Amorim, F., Guo, F., Witkamp, G.-J., van Ruijven, B., and Wada, Y.
- Abstract
The chances of a global hydrogen economy becoming a reality have increased significantly since the COVID pandemic and the war in Ukraine, and for net zero carbon emissions. However, intercontinental hydrogen transport is still a major issue. This study suggests transporting hydrogen as a gas at atmospheric pressure in balloons using the natural flow of wind to carry the balloon to its destination. We investigate the average wind speeds, atmospheric pressure, and temperature at different altitudes for this purpose. The ideal altitudes to transport hydrogen with balloons are 10 km or lower, and hydrogen pressures in the balloon vary from 0.25 to 1 bar. Transporting hydrogen from North America to Europe at a maximum 4 km altitude would take around 4.8 days on average. Hydrogen balloon transportation cost is estimated at 0.08 USD/kg of hydrogen, which is around 12 times smaller than the cost of transporting liquified hydrogen from the USA to Europe. Due to its reduced energy consumption and capital cost, in some locations, hydrogen balloon transportation might be a viable option for shipping hydrogen compared to liquefied hydrogen and other transport technologies.
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- 2024
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12. Assessment of the quality of oral biopsy procedure videos shared on YouTube.
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Díaz‐Rodríguez, A., Limeres‐Posse, J., Albuquerque, R., Brailo, V., Cook, R., Fricain, J. C., Lodi, G., Monteiro, L., Silva, L., Carey, B., and Diniz‐Freitas, M.
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BIOPSY ,SOCIAL media ,RESEARCH funding ,QUESTIONNAIRES ,DESCRIPTIVE statistics ,ORAL diseases ,DENTISTS ,QUALITY assurance ,ENGLISH language ,VIDEO recording ,EVALUATION - Abstract
Objective: The aim of this study was to assess the quality of free‐to‐access videos on oral biopsy procedures on the YouTube platform. Materials and Methods: We conducted a search on YouTube using the term "oral biopsy" and selected the first 100 videos in order of relevance. The following exclusion criteria were applied: language other than English, videos that did not cover oral biopsy techniques, videos on nonhuman specimens, postoperative instructions, personal experiences, exfoliative cytology, or "brush biopsy." Forty‐seven selected videos were classified based on their duration, country of origin, date of upload to the system, author, information source and number of views, and likes and dislikes. Video quality was analyzed using DISCERN, the Global Quality Scale (GQS), and the Video Information and Quality Index (VIQI). Results: The majority (78.7%) of analyzed videos were uploaded by dentists, originating from India (48.9%), with a mean duration of 11.8 min (SD, 20.4), with 104.5 likes (SD, 186.4) and 7.1 dislikes (SD, 10.55). The mean values for DISCERN, GQS, and VIQI were 1.3 (SD, 0.52), 2.1 (SD, 1.04), and 9.62 (SD, 1.69), respectively. Conclusion: The majority of videos on oral biopsy published on YouTube are of low quality. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Influence of physical activity on sleep quality in older adult aged ≥ 65 years
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Freitas, M., primary, Albuquerque, L., additional, Neiva, G., additional, de Freitas, M.C., additional, Guimarães, R., additional, Aguiar, C., additional, Dias, C., additional, and Salles, C., additional
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- 2024
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14. Frequency of COMISA and association with quality of life in older adults
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Freitas, M.C., primary, Aguiar, C., additional, Gonzaga, L.H., additional, Guimarães, C.M., additional, Freitas, M., additional, Dias, C., additional, and Salles, C., additional
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- 2024
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15. Risk factors on developing brain metastasis from melanoma: A sistematic review
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Freitas, M., primary
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- 2024
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16. D-ECCO Grant Dietary patterns during early life and risk of inflammatory bowel disease
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Brusco De Freitas, M, primary, Anneberg, O M, additional, and Jess, T, additional
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- 2024
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17. P1168 Anthropometric trajectories prior to the development of inflammatory bowel disease in Danish school-aged children and adolescents from 1997 to 2017
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Brusco De Freitas, M, primary, Juul Poulsen, G, additional, and Jess, T, additional
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- 2024
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18. Genomic and physiological characterization of Kitasatosporasp. nov., an actinobacterium with potential for biotechnological application isolated from Cerrado soil
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Cunha-Ferreira, I. C., Vizzotto, C. S., Freitas, M. A. M., Peixoto, J., Carvalho, L. S., Tótola, M. R., Thompson, F. L., and Krüger, R. H.
- Abstract
An Actinobacteria– Kitasatosporasp. K002 – was isolated from the soil of Cerrado, a savanna-like Brazilian biome. Herein, we conducted a phylogenetic, phenotypic and physiological characterization, revealing its potential for biotechnological applications. Kitasatosporasp. K002 is an aerobic, non-motile, Gram-positive bacteria that forms grayish-white mycelium on solid cultures and submerged spores with vegetative mycelia on liquid cultures. The strain showed antibacterial activity against Bacillus subtilis, Pseudomonas aeruginosaand Escherichia coli. Genomic analysis indicated that Kitasatospora xanthocidicaJCM 4862 is the closest strain to K002, with a dDDH of 32.8–37.8% and an ANI of 86.86% and the pangenome investigations identified a high number of rare genes. A total of 60 gene clusters of 22 different types were detected by AntiSMASH, and 22 gene clusters showed low similarity (< 10%) with known compounds, which suggests the potential production of novel bioactive compounds. In addition, phylogenetic analysis and morphophysiological characterization clearly distinguished Kitasatosporasp. K002 from other related species. Therefore, we propose that Kitasatosporasp. K002 should be recognized as a new species of the genus Kitasatospora– Kitasatospora brasiliensissp. nov. (type strains = K002).
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- 2024
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19. How ChatGPT performs in Oral Medicine: The case of oral potentially malignant disorders.
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Diniz‐Freitas, M., Rivas‐Mundiña, B., García‐Iglesias, J. R., García‐Mato, E., and Diz‐Dios, P.
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ORAL disease diagnosis , *MEDICAL education , *CLINICAL decision support systems , *ARTIFICIAL intelligence , *NATURAL language processing , *ORAL medicine , *ORAL diseases , *COMPUTER-aided diagnosis , *DENTISTRY - Abstract
The article explores ChatGPT's efficacy in Oral Medicine, focusing on its performance in addressing questions related to oral potentially malignant disorders (OPMDs). Topics discussed include ChatGPT's moderate knowledge base, discrepancies in classifying OPMDs, and conflicting recommendations regarding adjuncts for diagnosis and factors contributing to malignant transformation.
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- 2024
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20. Efficiency of inoculation methods for the assessment of bacterial halo blight in coffee seedlings.
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Oliveira, J. M., Pozza, E. A., Belan, L. L., Freitas, M. L. O., and Tedardi, V. M.
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VACCINATION ,ANALYSIS of variance ,FACTORIAL experiment designs ,COFFEE ,COFFEE beans ,COFFEE manufacturing - Abstract
Bacterial halo blight (BHB), caused by Pseudomonas coronafaciens pv. garcae (Pcg), is one of the most significant diseases affecting coffee trees worldwide, resulting in considerable damage and notable losses within coffee production systems. Further research into the epidemiology and aetiology of BHB in coffee plants is essential for developing effective management strategies. Understanding the efficiency of each inoculation methodology in inducing symptoms is crucial for advancing this research. Therefore, this study aimed to assess the efficiency of seven Pcg inoculation methods using five concentrations to enhance the highest BHB intensity. The experimental design was a complete randomized block design in a factorial (7 × 5) variance analysis with four replications. The first three pairs of leaves of coffee seedlings of the cultivar Catuaí Vermelho IAC‐99 were inoculated and evaluated for the incidence and severity of BHB. The inoculation methods of Pcg by injury provided higher BHB AUDPCI and AUDPCS values. Among these, the inoculum injection and multi‐needle wounding at inoculum concentrations of 1.6 × 109 CFU mL−1 demonstrated higher disease intensity. [ABSTRACT FROM AUTHOR]
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- 2024
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21. Dynamics of nonlinear Reissner–Mindlin–Timoshenko plate systems.
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Feng, B., Freitas, M. M., Costa, A. L. C., and Santos, M. L.
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FRACTAL dimensions , *NONLINEAR systems , *ATTRACTORS (Mathematics) , *FRACTALS - Abstract
The problem of Reissner–Mindlin–Timoshenko plate systems with nonlinear damping terms is considered. The main result is the existence of global attractors. By showing the system is gradient and asymptotic smoothness via a stabilizability inequality, we establish the existence of global attractors with finite fractal dimension. The continuity of global attractors regarding the parameter in a residual dense set is also proved. The above results allow the damping terms with polynomial growth. [ABSTRACT FROM AUTHOR]
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- 2024
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22. A-354 - Risk factors on developing brain metastasis from melanoma: A sistematic review
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Freitas, M.
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- 2024
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23. Influence of sleep quality on the quality of life of older adults aged ≥ 65 years who had SARS-CoV-2 infection and who did not
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Gonzaga, L.H., Aguiar, C., Freitas, M.C.S., Guimarães, C.M., Freitas, M., Almondes, K.M., Dias, C., and Salles, C.
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- 2024
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24. Plant-derived and dietary phenolic cinnamic acid derivatives: Anti-inflammatory properties.
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Freitas M, Ribeiro D, Janela JS, Varela CL, Costa SC, da Silva ET, Fernandes E, and Roleira FMF
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- Humans, Animals, Plant Extracts chemistry, Plant Extracts pharmacology, Plants chemistry, Molecular Structure, Cinnamates chemistry, Cinnamates pharmacology, Anti-Inflammatory Agents chemistry, Anti-Inflammatory Agents pharmacology, Phenols chemistry, Phenols pharmacology
- Abstract
Cinnamic acids are aromatic acids primarily found in plants and plant-derived food. Phenolic cinnamic acids, with one or more hydroxyl groups in the aromatic ring, often contribute to the biological activities attributed to these compounds. The presence of hydroxyl groups and a carboxyl group makes cinnamic acids very hydrophilic, preventing them from crossing biological membranes and exerting their biological activities. To alleviate this condition, a panel of synthetic modifications have been made leading to a diverse set of phenolic cinnamic structures. In this review, an overview of the natural phenolic cinnamic acid derivatives and their plant sources (more than 200) is described. The synthetic approaches to obtain the referred derivatives (more than 200) namely esters and amides are reviewed. Further, their anti-inflammatory activity (more than 70 compounds) is scrutinized. Finally, future directions will be indicated to translate the research on phenolic cinnamic derivatives into potentially effective anti-inflammatory drugs., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023. Published by Elsevier Ltd.)
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- 2024
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25. Replacing the Gallium Oxide Shell with Conductive Ag: Toward a Printable and Recyclable Composite for Highly Stretchable Electronics, Electromagnetic Shielding, and Thermal Interfaces.
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Hajalilou A, Parvini E, Morgado TA, Alhais Lopes P, Melo Jorge ME, Freitas M, and Tavakoli M
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Liquid metal (LM)-based composites hold promise for soft electronics due to their high conductivity and fluidic nature. However, the presence of α-Ga
2 O3 and GaOOH layers around LM droplets impairs conductivity and performance. We tackle this issue by replacing the oxide layer with conductive silver (Ag) using an ultrasonic-assisted galvanic replacement reaction. The Ag-coated nanoparticles form aggregated, porous microparticles that are mixed with styrene-isoprene-styrene (SIS) polymers, resulting in a digitally printable composite with superior electrical conductivity and electromechanical properties compared to conventional fillers. Adding more LM enhances these properties further. The composite achieves EMI shielding effectiveness (SE) exceeding 75 dB in the X-band frequency range, even at 200% strain, meeting stringent military and medical standards. It is applicable in wireless communications and Bluetooth signal blocking and as a thermal interface material (TIM). Additionally, we highlight its recyclability using a biodegradable solvent, underscoring its eco-friendly potential. This composite represents a significant advancement in stretchable electronics and EMI shielding, with implications for wearable and bioelectronic applications.- Published
- 2024
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26. Exploring quercetin's protective potential against the pro-inflammatory effects of silver nanoparticles in C57BL/6J mice.
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Sousa A, Amaro A, Costa VM, Azevedo R, Oliveira S, Viana S, Reis F, Almeida A, Matafome P, Dias-Pereira P, Carvalho F, Fernandes E, and Freitas M
- Abstract
The increasing prevalence of silver nanoparticles (AgNP) in various applications has sparked concerns about their potential adverse effects on human health. Hence, it is crucial to devise strategies to minimize their detrimental effects. Quercetin, a naturally occurring flavonoid present in human diet is known for its broad biological effects, including anti-inflammatory properties. Considering this, quercetin could serve as a promising strategy to protect the body against the harmful effects of AgNP. Thus, this study aimed to evaluate the potential protective role of quercetin against the deleterious effects induced by 5 nm polyvinylpyrrolidone (PVP)-AgNP in C57BL/6J mice. Using a novel administration technology (HaPILLness), mice were given a daily oral dose of AgNP at 1 mg/Kg bw or 10 mg/Kg body weight (bw) for 14 days, combined with daily IP injections of quercetin at 1 mg/Kg bw. Our findings demonstrate that quercetin effectively attenuated the AgNP-induced intestinal inflammatory response, as demonstrated by reduced histological vascular and cellular alterations, along with a notable decrease in cytokine production, attributed to the inhibition of the nuclear factor (NF)-кB inflammatory pathway. Quercetin's protective effects extended to the liver and lungs, by reversing changes in the inflammatory and antioxidant markers CD4, SOD1, Nrf2 and catalase., Competing Interests: Declaration of Competing Interest ☒ The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024. Published by Elsevier Ltd.)
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- 2024
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27. Herbacetin Inhibits Human Fructose 1,6-Bisphosphatase Among a Panel of Chromone Derivatives and Pyrazoles, Demonstrating Positive Effects on Insulin-Resistant HepG2 Cells.
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Rocha S, Vicente B, Proença C, Silva VLM, Silva AMS, Corvo ML, Fernandes E, and Freitas M
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- Humans, Hep G2 Cells, Flavonoids pharmacology, Flavonoids chemistry, Proto-Oncogene Proteins c-akt metabolism, Proto-Oncogene Proteins c-akt antagonists & inhibitors, Enzyme Inhibitors pharmacology, Enzyme Inhibitors chemistry, Molecular Docking Simulation, Chromones pharmacology, Chromones chemistry, Insulin Resistance, Fructose-Bisphosphatase metabolism, Fructose-Bisphosphatase antagonists & inhibitors, Pyrazoles pharmacology, Pyrazoles chemistry
- Abstract
In patients with type 2 diabetes mellitus (DM), excessive gluconeogenesis is considered a major contributor to hyperglycemia. Therefore, targeting fructose 1,6-bisphosphatase (FBPase), a key regulatory enzyme involved in gluconeogenesis, has gained interest as a potential therapeutic target for managing DM. In this study, a library of 42 structurally-related chromone derivatives (including flavonoids, 2-styrylchromones, and 2-(4-arylbuta-1,3-dien-1-yl)chromones, named as 2-styrylchromone-related derivatives), as well as 4- and 5-styrylpyrazoles, were tested against human FBPase using a noncellular microanalysis screening system. Herbacetin, 3,4',5,7,8-pentahydroxyflavone, inhibited FBPase activity with an IC
50 value of 6.4 ± 0.7 μM. The effects of herbacetin were also explored using an insulin-resistant human hepatocellular carcinoma cell line (HepG2 cells). The results showed that herbacetin significantly decrease insulin resistance by promoting the phosphorylation of protein kinase B (Akt), and exhibited a capacity to ameliorate inflammation, evidenced by the modulation of the inhibitor of κB alpha (IκBα). This study provides important considerations for the design of novel FBPase inhibitors. Furthermore, it indicates a preliminary potential of herbacetin's dual action in improving insulin resistance and decreasing inflammation, suggesting the need for further investigation of this compound for addressing the complexities of type 2 DM management., (© 2024 John Wiley & Sons Ltd.)- Published
- 2024
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28. Development and validation of QuEChERS-HPLC method for simultaneous analysis of 5-hydroxymethylfurfural, furfural, and p-cresol in brewery spent grain's hydrolysate.
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Lima Moraes Dos Santos A, Rocha Nogueira T, Lopes Freitas M, Honório Queiros PH, and Bezerra Dos Santos A
- Abstract
Developing efficient methods to analyze inhibitors resulting from the breakdown of the lignocellulosic matrix in brewery spent grain is crucial for selecting optimal pretreatment strategies and monitoring these compounds during biodigestion processes. However, to date, these determinations have been based on separate methodologies that have not been subjected to the analytical validation stage. This study optimized QuEChERS extraction methods combined with High-Performance Liquid Chromatography (HPLC) analysis to determine 5-hydroxymethylfurfural (5-HMF), furfural, and p-cresol, simultaneously, in the semisolid and liquid fraction of the BSG hydrolysate. The analytical methods were validated by AOAC and INMETRO guidelines. All analytes showed good linearity, with correlation coefficients (R
2 ) greater than 0.97, and low limits of quantification. Recoveries at low, medium, and high levels were 94-116 %, repeatability was 0.6-6.8 %, and intermediate precision was 0.5-7.6 %. The method proved efficient when applied to a set of seven samples. It will contribute to monitoring inhibitory compounds present in biodigestion systems even at low concentrations, which is currently a challenge., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier B.V. All rights reserved.)- Published
- 2024
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29. Styrylchromones: Biological Activities and Structure-Activity Relationship.
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Lucas M, Freitas M, Silva AMS, Fernandes E, and Ribeiro D
- Abstract
Styrylchromones (SC) are a group of oxygen-containing heterocyclic compounds, which are characterized by the attachment of a styryl group to the chromone core. SC can be found in nature or can be chemically synthesized in the laboratory. As their presence in nature is scarce, the synthetic origin is the most common. Two types of SC are known: 2-styrylchromones and 3-styrylchromones. However, 2-styrylchromones are the most common, being more commonly found in nature and which chemical synthesis is more commonly described. A wide variety of SC has been described in the literature, with different substituents in different positions, the majority of which are distributed on the A- and/or B-rings. Over the years, several biological activities have been attributed to SC. This work presents a comprehensive review of the biological activities attributed to SC and their structure-activity relationship, based in a published literature search, since 1989. The following biological activities are thoroughly revised and discussed in this review: antioxidant, antiallergic, antiviral, antibacterial, antifungal, anti-inflammatory and antitumoral, affinity and selectivity for A3 adenosine receptors, neuroprotective, and α-glucosidase inhibition. In general, SC are composed by a promising scaffold with great potential for the development of new drugs., (© 2024 Wiley‐VCH GmbH.)
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- 2024
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30. Challenging ChatGPT-4V for the Diagnosis of Oral Diseases and Conditions.
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Diniz-Freitas M, Lago-Méndez L, Limeres-Posse J, and Diz-Dios P
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- 2024
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31. C3 glomerulonephritis associated with monoclonal gammopathy of renal significance: a diagnostic and therapeutic challenge.
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Beirão B, Freitas M, Silva N, Ferraz P, Prata C, and Morgado T
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- Humans, Complement C3 analysis, Male, Middle Aged, Female, Aged, Glomerulonephritis complications, Glomerulonephritis diagnosis, Glomerulonephritis etiology, Paraproteinemias complications, Paraproteinemias diagnosis
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- 2024
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32. Surgical and Camouflage Orthodontic Treatment of Anterior Open Bite: Comparison of Profile Attractiveness.
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Nogueira CQ, Cotrin P, Freitas DS, Prado de Souza JE, Valarelli FP, Freitas KMS, and de Freitas MR
- Abstract
Objective: To evaluate the profile's attractiveness between the different protocols for treating the anterior open bite., Methods: The sample comprised 39 patients with anterior open bite treated with or without extractions, divided into two groups: The surgical group (G1) comprised 21 subjects (10 males, 11 females) with a mean initial age of 21.86 years (SD = 5.09), treated with fixed orthodontic appliance followed by orthognathic surgery, for a total mean period of 2.53 years (SD = 0.61). The mean overbite was -5.01 mm (SD = 2.50); The camouflaged group (G2) comprised 18 subjects (9 males, 9 females), with a mean initial age of 20.47 years (SD = 4.19), treated only with fixed orthodontic appliance, for a total mean period of 2.56 years (SD = 0.94). The mean overbite was -4.28 mm (SD = 1.15). Lateral photographs from pretreatment and posttreatment were used. These photographs were evaluated by 46 laypeople and 67 dentists, who rated the attractiveness of each profile from 0 (most unattractive profile) to 10 (most attractive profile). Intergroup comparisons were performed with independent t-tests., Results: Both groups presented improvement in the profile attractiveness with treatment (p < 0.001). Before treatment, the profile of the surgical group was significantly less attractive than the profile of the camouflaged group (p < 0.001). The surgical presented a more attractive profile at the final stage than the camouflaged group (p < 0.001). The surgical group showed a greater improvement in profile attractiveness with treatment than the camouflaged group (p < 0.001)., Conclusion: In the final stage, the surgical presented a more attractive and greater improvement in profile attractiveness than the camouflaged group. The laypeople and dentists judged similarly the initial profile attractiveness., (© 2024 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
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- 2024
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33. European Portuguese version of the Mini-BESTest: a cross-cultural adaptation and psychometric measurements in individuals with sensorimotor impairments.
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Freitas M, Pinho F, Cruz-Martins N, Pinho L, Silva S, Figueira V, Vilas-Boas JP, and Silva A
- Abstract
Purpose: This study aimed to translate and cross-culturally adapt the Mini-BESTest into European Portuguese and to evaluate its psychometric properties in individuals with sensorimotor impairments., Material and Methods: A cross-sectional cross-cultural adaptation and validation study was conducted according to the COSMIN guidelines and the STROBE statement. The study included 100 participants with sensorimotor impairments who were able to walk 6 m. Cronbach's alpha and item-total correlations were used to assess internal consistency. Interpretability was assessed by examining floor and ceiling effects and skewness. To investigate construct validity, Spearman correlation coefficients and Bland-Altman analysis were performed to compare the Berg Balance Scale and the Mini-BESTest Inter- and intra-rater reliability were assessed by calculating the ICC, SEM and MDC based on video recordings of the participants during the Mini-BESTest assessments., Results: The European Portuguese Mini-BESTest showed good internal consistency (Cronbach's α = 0.892) and no significant floor or ceiling effects. Excellent inter- and intra-rater reliability (ICC = 0.97) were also demonstrated, with MDC of 2.58 and 2.57, respectively. Furthermore, this instrument showed a significant correlation with the BBS ( r = 0.902). Bland-Altman analysis showed small absolute differences., Conclusion: The European Portuguese Mini-BESTest is comparable to the original English version in terms of validity and reliability and is therefore highly recommended for use by Portuguese-speaking professionals to assess postural control.
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- 2024
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34. Pediatric obstructive sleep apnea-related risk factors: A cross-sectional study.
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Machado Saporiti J, Castagno D, Delpizzo Castagno C, Perpétua Mota Freitas M, Leão Goettems M, and Boscato N
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- Humans, Risk Factors, Cross-Sectional Studies, Child, Female, Male, Adolescent, Polysomnography, Snoring complications, Sleep Apnea, Obstructive complications, Sleep Apnea, Obstructive physiopathology
- Abstract
Objectives: This study investigated obstructive sleep apnea (OSA)-related risk factors in children and adolescents., Materials and Methods: Records of 187 subjects from a private medical clinic were reviewed. Overnight polysomnography recordings and self/parent reports were gathered. Descriptive analysis of sociodemographic, anthropometric, sleep quality and sleep architecture variables and OSA diagnosis were performed. Associations between independent variables and OSA diagnosis were assessed through multivariable logistic regression with robust variance, with a significance level of 5%. Results: 132 participants were diagnosed with OSA, and 55 were classified as "no OSA" (29.41%). Those overweight or obese were 4.97 times more likely to have OSA than those with normal weight (P = 0.005). Those who reported loud snoring were 2.78 times more likely to have OSA than those who reported mild or moderate snoring intensity. A one-unit increase in arousal index leads to 1.39 increase in the odds ratio (OR) of individuals diagnosed with OSA (P < 0.001), and each one-unit increase in sleep efficiency leads to 1.09 higher odds of not having OSA (P = 0.002)., Conclusions: Significantly increased OSA-related risk factors among overweight/obese children and adolescents and among those who had a parental/self-report of loud snoring were found.
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- 2024
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35. Treatment of Childhood Brucellosis: A Systematic Review.
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Lanza Galvão E, Miranda Souza K, Gonçalves de Freitas M, Souza MRF, Gonçalves MWA, Cota G, and Silva SN
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- Humans, Child, Rifampin therapeutic use, Trimethoprim, Sulfamethoxazole Drug Combination therapeutic use, Child, Preschool, Aminoglycosides therapeutic use, Drug Therapy, Combination, Treatment Outcome, Brucellosis drug therapy, Anti-Bacterial Agents therapeutic use
- Abstract
Background: Proper treatment for brucellosis is crucial to eradicate the infection and prevent complications, but there is a notable gap in evidence for pediatric treatment. This study aims to address this gap by reviewing current literature, analyzing the efficacy and safety of brucellosis treatment in children, and identifying areas that require further investigation., Methods: A systematic review, following preferred reporting items for systematic reviews and meta-analyses and Cochrane Handbook guidelines, assessed antimicrobial regimens' efficacy and safety for treating human brucellosis in children. Original human studies with clinical outcomes after drug therapy intervention for children up to 10 years were included. Searches were conducted in Medline, Embase, Cochrane Library and LILACS databases for studies indexed until March 6, 2023. Study selection, data extraction, and bias risk assessment were performed by pairs of reviewers. The quality assessment used Joanna Briggs Institute tools and grading of recommendations assessment, development and evaluation system. Data were analyzed using R software., Results: A total of 1773 records were reviewed, yielding 11 eligible studies encompassing 1156 children. All included studies presented an observational design. The most reported treatment approaches included sulfamethoxazole-trimethoprim with rifampicin or aminoglycosides, with summarized failure rates of 2% (95% confidence interval: 0.0-0.49) and 13% (95% confidence interval: 0.06-0.29), respectively (very low certainty of evidence). Adverse events and time to defervescence were not reported., Conclusions: Sulfamethoxazole-trimethoprim + rifampicin were the most prescribed antibiotics for brucellosis for pediatrics. The study highlights the need for more research with robust designs, and emphasizes uncertainty regarding the efficacy of antimicrobial regimens, emphasizing the importance of further investigations to guide specific treatment protocols for this population., Competing Interests: The authors have no conflicts of interest to disclose., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2024
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36. Authors' reply: How ChatGPT performs in oral medicine: The case of oral potentially malignant disorders. Oral Diseases. Advance online publication. https://doi.org/10.1111/odi.14750.
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Diniz-Freitas M, Rivas-Mundiña B, García-Iglesias JR, García-Mato E, and Diz-Dios P
- Subjects
- Humans, Oral Medicine, Precancerous Conditions, Mouth Neoplasms
- Published
- 2024
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37. Variation in Antibiotic Prescription in High-Risk Febrile Neutropenia in Portuguese Hospitals.
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Freitas M, Andrade P, Pinto R, Trigo F, Azevedo A, and Almeida F
- Abstract
Introduction: Febrile neutropenia (FN) is a potentially severe entity, particularly in hemato-oncologic patients who have higher incidence of colonization with multidrug-resistant bacteria. Discrepancies among guidelines contribute to divergence in antimicrobial practices. Our objective was to assess the variation of practices in antimicrobial therapy in high-risk FN among Portuguese hematologists., Methods: We conducted a cross-sectional study through the implementation of an online survey, open to all clinical hematologists in the country. To characterize practice patterns regarding critical elements in FN management, three clinical vignettes were designed to describe typical situations where narrow-spectrum empiric antibiotics (vignette 1), short-course therapy (vignette 2) and de-escalation (vignette 3) could be performed. The remaining questions characterized clinical experience, department size, and differentiation and decision-making process regarding FN antibiotic therapy., Results: The survey yielded 31 responses from 11 hospitals across four regions. All respondents opted for empiric narrow-spectrum antibiotics, 22.6% opted for short-course therapy (mostly senior specialists from larger settings) and 35.5% for de-escalation (mostly young specialists). Availability of an FN protocol seemed to favor both approaches. These findings should be complemented by qualitative assessments of barriers to best practices and should support the need for interventions to improve antibiotic use in febrile neutropenia.
- Published
- 2024
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38. The First Isolation of Insect-Specific Alphavirus ( Agua Salud alphavirus ) in Culex (Melanoconion) Mosquitoes in the Brazilian Amazon.
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Ramos B, Carvalho V, da Silva E, Freitas M, Barros LJ, Santos M, Pantoja JA, Gonçalves E, Nunes Neto J, Junior JW, Vieira D, Dias D, Cruz AC, Nunes B, Silva S, Aragão C, Casseb A, and Martins L
- Subjects
- Animals, Brazil, Vero Cells, Chlorocebus aethiops, Mosquito Vectors virology, Phylogeny, Arboviruses isolation & purification, Arboviruses genetics, Arboviruses classification, Alphavirus isolation & purification, Alphavirus genetics, Alphavirus classification, Culex virology
- Abstract
Advances in diagnostic techniques coupled with ongoing environmental changes have resulted in intensified surveillance and monitoring of arbovirus circulation in the Amazon. This increased effort has resulted in increased detection of insect-specific viruses among hematophagous arthropods collected in the field. This study aimed to document the first isolation of Agua Salud alphavirus in mosquitoes collected within the Brazilian Amazon. Arthropods belonging to the family Culicidae were collected within a forest fragment located in the Environmental Protection Area of the metropolitan region of Belem. Subsequently, these specimens were meticulously identified to the species level. Afterward, the collected batches were macerated, and the resulting supernatant was then inoculated into C6/36 and Vero cell cultures to facilitate viral isolation. The presence of arboviruses within the inoculated cell cultures was determined through indirect immunofluorescence analysis. Furthermore, positive supernatant samples underwent nucleotide sequencing to precisely identify the viral strains present. Notably, a batch containing Culex ( Melanoconion ) mosquitoes was identified to be positive for the genus Alphavirus via indirect immunofluorescence. This study is the first report on insect-specific alphavirus isolation in Brazil and the first-ever description of Agua Salud alphavirus isolation within Amazon Forest remnants.
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- 2024
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39. The risks of artificial intelligence: A narrative review and ethical reflection from an Oral Medicine group.
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Feng QJ, Harte M, Carey B, Alqarni A, Monteiro L, Diniz-Freitas M, Fricain JC, Lodi G, Brailo V, Andreoletti M, and Albuquerque R
- Abstract
As a relatively new tool, the use of artificial intelligence (AI) in medicine and dentistry has the potential to significantly transform the healthcare sector. AI has already demonstrated efficacy in medical diagnosis across several specialties, used successfully to detect breast, lung and skin cancer. In Oral Medicine, AI may be applied in a similar fashion, used in the detection and diagnosis of oral cancers and oral potentially malignant diseases. Despite its promise as a transformative diagnostic aid, the use of AI in healthcare presents significant safety, reliability and ethical concerns. There is no formal consensus on the safe and ethical implementation of AI systems in healthcare settings, but the literature converges on several key principles of ethical AI use including transparency, justice and fairness, non-maleficence, responsibility and privacy. This article provides a narrative review of the key ethical issues surrounding AI use in medicine, and reflects on these, providing view-points of a bioethicist and Oral Medicine clinicians from several units., (© 2024 The Author(s). Oral Diseases published by John Wiley & Sons Ltd.)
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- 2024
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40. Mapping oral medicine (stomatology) & oral and maxillofacial pathology international organizations: a scoping review of global data and historical analysis.
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Esteves-Pereira TC, Santana Dos Santos E, Hanemann JAC, Vargas PA, Lopes MA, van Heerden WFP, Bissonnette C, Panico RL, González-Arriagada WA, Nava-Villalba M, Gallagher KPD, Bologna-Molina R, Saldivia-Siracusa C, Wiriyakijja P, Radhakrishnan RA, Farag AM, Nagao T, Huang YF, Riordain RN, Diniz-Freitas M, Bertin H, Farah CS, Mosqueda-Taylor A, Perez DEDC, Hunter KD, Villa A, and Santos-Silva AR
- Abstract
Objectives: To describe the historical evolution and dissemination of the Oral Medicine and Oral and Maxillofacial Pathology international societies and associations across the globe, and to provide insights into their significant contributions toward oral health promotion., Study Design: This review was conducted in accordance with the JBI Scoping Review Methodology Group guidance. The reporting followed the Preferred Reporting Items for Systematic Reviews extension for Scoping Reviews (PRISMA-ScR)., Results: Search strategy was applied to 5 databases (MEDLINE/PubMed, Scopus, Embase, Web of Science, Latin American and Caribbean Health Sciences (LILACS)) and grey literature (Google Scholar, Open Grey and ProQuest), as well as additional sources, such as organization websites. Eighty-nine sources were included in this review. Forty-six professional associations/societies were identified, of which 39 represented a country or geopolitical region, 2 represented continents, 2 represented multinational organizations and 3 multinational study groups., Conclusions: Documentation of the historical establishment and development of Oral Medicine and Oral and Maxillofacial Pathology organizations worldwide is limited and describing these processes remains challenging. Analysis of global data reveals heterogeneous development and distribution, resulting in disparities in accessibility and standardization. Further efforts toward oral health promotion should be implemented., (Copyright © 2024 Elsevier Inc. All rights reserved.)
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- 2024
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41. Liposomal quercetin: A promising strategy to combat hepatic insulin resistance and inflammation in type 2 diabetes mellitus.
- Author
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Rocha S, Luísa Corvo M, Freitas M, and Fernandes E
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- Humans, Hep G2 Cells, Liver metabolism, Liver drug effects, Cyclooxygenase 2 metabolism, Oxidative Stress drug effects, NF-kappa B metabolism, Hypoglycemic Agents administration & dosage, Hypoglycemic Agents pharmacology, Hypoglycemic Agents chemistry, Reactive Oxygen Species metabolism, Proto-Oncogene Proteins c-akt metabolism, Antioxidants administration & dosage, Antioxidants pharmacology, Quercetin administration & dosage, Quercetin pharmacology, Quercetin chemistry, Insulin Resistance, Liposomes, Diabetes Mellitus, Type 2 drug therapy, Inflammation drug therapy
- Abstract
In type 2 diabetes mellitus, hepatic insulin resistance is intricately associated with oxidative stress and inflammation. Nonetheless, the lack of therapeutic interventions directly targeting hepatic dysfunction represents a notable gap in current treatment options. Flavonoids have been explored due to their potential antidiabetic effects. However, these compounds are associated with low bioavailability and high metabolization. In the present study, four flavonoids, kaempferol, quercetin, kaempferol-7-O-glucoside and quercetin-7-O-glucoside, were studied in a cellular model of hepatic insulin resistance using HepG2 cells. Quercetin was selected as the most promising flavonoid and incorporated into liposomes to enhance its therapeutic effect. Quercetin liposomes had a mean size of 0.12 µm, with an incorporation efficiency of 93 %. Quercetin liposomes exhibited increased efficacy in modulating insulin resistance. This was achieved through the modulation of Akt expression and the attenuation of inflammation, particularly via the NF-κB pathway, as well as the regulation of PGE
2 and COX-2 expression. Furthermore, quercetin liposomes displayed a significant advantage over free quercetin in attenuating the production of reactive pro-oxidant species. These findings open new avenues for developing innovative therapeutic strategies to manage diabetes, emphasizing the potential of quercetin liposomes as a promising approach for targeting both hepatic insulin resistance and associated inflammation., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)- Published
- 2024
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42. POT1 tumour predisposition: a broader spectrum of associated malignancies and proposal for additional screening program.
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Baptista Freitas M, Desmyter L, Badoer C, Smits G, Vandernoot I, and T Kint de Roodenbeke D
- Subjects
- Humans, Male, Female, Middle Aged, Adult, Genetic Testing methods, Aged, Genetic Predisposition to Disease, Telomere-Binding Proteins genetics, Shelterin Complex, Pedigree
- Abstract
Protection of Telomeres Protein 1 (POT1) protein is an essential subunit of the shelterin telomere binding complex, regulating telomere length. Some POT1 gene pathogenic variants (PV) lead to telomere elongation, genomic instability and higher risk of cancer. POT1 tumour predisposition syndrome (POT1-TPD) has autosomal dominant inheritance and unknown penetrance. It is associated with increased risk of cutaneous melanoma, chronic lymphocytic leukaemia, angiosarcoma and gliomas. In this work, we aim to describe a broader cancer phenotype related to POT1-TPD, in three families (two with a four generation pedigree, one with a five generation pedigree). The three index cases were referred to our oncogenetic centre for genetic counselling due to their personal history of cancer. Two underwent clinical exome sequencing of 4,867 genes associated with Mendelian genetic diseases, and another underwent gene panel sequencing including POT1, which identified three different POT1 PV: NC_000007.14(NM_015450.2):c.349C>T; NC_000007.14(NM_015450.2):c.233T>C and NC_000007.14(NM_015450.2):c.818G>A; already described in the literature. Referenced relatives, did a target genetic test (according to the POT1 PV identified in the family). In total, 37 individuals were tested (51.4% females), median age of 46 (22-81) years, with POT1 PV detected in 22. POT1-TPD was observed, but also a higher incidence of other cancers (other sarcomas, papillary thyroid cancer, early onset prostate cancer and leukaemia). These findings contribute to an increase in our knowledge about POT1 PV, and it can play a role in the definition of future POT1 PV screening criteria, POT1 carrier surveillance protocols (possibly considering screening for all types of sarcomas) and in genetic counselling., (© 2024. The Author(s).)
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- 2024
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43. Phosphate-Containing Glycolipids: A Review on Synthesis and Bioactivity.
- Author
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Pinheiro L, Freitas M, and Branco PS
- Abstract
Phosphate-containing glycolipids (PcGL) are scarcer than the better understood glycolipids. They are composed of arrangements of phosphate, carbohydrates and glycerol units and are always found associated with lipids. PcGL are often found associated with cell membranes, suggesting they play roles in cell membrane structure and intercellular interactions. This article aims to provide an up-to-date overview of the existing knowledge and research on PcGL, emphasizing their synthesis and wide range of biological activities. When it comes to the synthesis of PcGL compounds, the strategies for glycosylation mainly rely on the thioglycoside donor, the trichloroacetamidate donor and halide donor strategies, while phosphorylation is stapled and falls on either phosphite chemistry or phosphoryl chloride chemistry. Certain bacteria utilize PcGLs in their pathogenicity, triggering an inflammatory response within the host's defense mechanisms. The best-known examples of these structures are teichoic acids, lipopolysaccharide and the capsular polysaccharide found in bacteria, all of which are frequently implicated in bacterial infections. Given the degree of variability within PcGL structures, they were found to display a wide range of bioactivities. PcGL compounds were found to: (1) have anti-metastatic properties, (2) behave as agonists or antagonists of platelet aggregation, (3) be mostly pro-inflammatory, (4) display antifungal and antibiotic activity and (5) have neurogenic activity., (© 2024 Wiley-VCH GmbH.)
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- 2024
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44. Seafood product safety: A hybrid graphene/gold-based electrochemical immunosensor for fish allergen analysis.
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Rocha JP, Freitas M, Geraldo D, Delerue-Matos C, and Nouws HPA
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- Animals, Gold chemistry, Allergens analysis, Hydrogen Peroxide chemistry, Electrochemical Techniques methods, Immunoassay methods, Seafood analysis, Limit of Detection, Graphite chemistry, Biosensing Techniques methods, Metal Nanoparticles chemistry
- Abstract
Seafood product labels with accurate allergen contents can avoid and/or minimize allergic reactions. Therefore, an electrochemical immunosensor for the analysis of β-parvalbumin (β-PV, a major fish allergen) was developed. Screen-printed carbon electrodes were nanostructured with reduced graphene oxide and gold nanoparticles. The platform was characterized by scanning electron microscopy and elemental analysis. In a sandwich-type assay (∼75 min), the antigen-antibody interaction was detected by chronoamperometry using horseradish peroxidase and TMB-H
2 O2 . A linear range of 25-3000 ng/mL, a sensitivity of 2.99 µA.mL/ng, and a limit of detection of 9.9 ng/mL (corresponding to 0.40 ng in the analysed aliquot) were obtained. The selectivity and possible interferences were assessed by analysing several other food allergens and a marine toxin. The sensor was applied to the analysis of 17 commercial foods and the effect of culinary processing (e.g., grilled, canned, smoked) on the β-PV concentration was assessed. Traces of β-PV were successfully quantified and ELISA was used to assess the results., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)- Published
- 2024
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45. The use of digital platforms and physical activity practice in a population from southern Brazil: Findings from the PAMPA Cohort.
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Quadros Santos Rocha J, da Silva LS, Pintanel Freitas M, Mendes Delpino F, Rombaldi AJ, de Almeida Paz I, Schröeder N, Santos Feter J, Nascimento da Silva C, Leal da Cunha L, Cassuriaga J, Feter N, Cozzensa da Silva M, Pereira Vieira Y, Lucia Caputo E, and Fossati Reichert F
- Abstract
Objective: We aimed to identify the factors associated with using digital platforms for physical activity during the COVID-19 pandemic among adults living in Southern Brazil. We also compared the trajectory of physical activity between users and non-users and by type of digital platform used., Methods: We analyzed data from the PAMPA (Prospective Study About Mental and Physical Health in Adults) cohort. The study started in June 2020, and tracked participants through three waves (December 2020, June 2021, and June 2022). The exposure variable was usingf digital platforms for physical activity. The outcome measure was minutes per week of physical activity. We employed a generalized linear model with robust variance to explore the interaction between time and the use of digital platforms, adjusting for sociodemographic covariates and the presence of chronic diseases., Results: The proportion of participants using digital platforms for physical activity declined from 36.8% in 2020 to 25.6% in 2021 and further to 13.5% in 2022. Using digital platforms for physical activity was associated with a higher mean daily physical activity during the COVID-19 pandemic. Participants who used digital platforms were more likely to be physically active when compared to their inactive contemparts throughout the entire study period. Notably, social media emerged with greater influence in the physical activity practice among digital platforms., Conclusion: Using these platforms had a positive impact on increasing the level of physical activity among the participants., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Author(s).)
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- 2024
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46. High frequency of multidrug-resistant Escherichia coli from cattle in the Cerrado and Pantanal biomes of Brazil.
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Tutija JF, Freitas MG, Martinez EV, Silva JFG, Araripe MBM, Leal CRB, Souza Filho AF, and Ramos CAN
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- Animals, Cattle, Brazil, Shiga-Toxigenic Escherichia coli isolation & purification, Shiga-Toxigenic Escherichia coli genetics, Shiga-Toxigenic Escherichia coli drug effects, Enterohemorrhagic Escherichia coli genetics, Enterohemorrhagic Escherichia coli isolation & purification, Enterohemorrhagic Escherichia coli drug effects, Enterotoxigenic Escherichia coli drug effects, Enterotoxigenic Escherichia coli genetics, Enterotoxigenic Escherichia coli isolation & purification, Escherichia coli Proteins genetics, Drug Resistance, Multiple, Bacterial, Escherichia coli Infections microbiology, Escherichia coli Infections veterinary, Escherichia coli Infections epidemiology, Feces microbiology, Anti-Bacterial Agents pharmacology, Escherichia coli drug effects, Escherichia coli genetics, Escherichia coli isolation & purification, Cattle Diseases microbiology, Cattle Diseases epidemiology, Virulence Factors genetics, Microbial Sensitivity Tests
- Abstract
The indiscriminate use of antimicrobials has led to the emergence of resistant bacteria, especially pathogenic strains of Escherichia coli, which are associated with diseases in animals and humans. The aim of the present study was to characterize E. coli isolates in calves with regards to the presence of virulence genes and investigate the resistance of the isolates to different antimicrobials. Between 2021 and 2023, 456 fecal samples were collected from calves in the Pantanal and Cerrado biomes of the state of Mato Grosso do Sul, Brazil. All samples were subjected to microbiological analysis and disc diffusion antibiogram testing. The polymerase chain reaction method was used to detect virulence genes. Bacterial growth was found in 451 of the 456 samples and biochemically identified as Escherichia coli. All 451 isolates (100 %) exhibited some phenotypic resistance to antimicrobials and 67.62 % exhibited multidrug resistance. The frequency of multidrug-resistant isolates in the Cerrado biome was significantly higher than that in the Pantanal biome (p = 0.0001). In the Cerrado, the most common pathotype was Shiga toxin-producing Escherichia coli (STEC) (28 %), followed by toxigenic Escherichia coli (ETEC) (11 %), enterohemorrhagic Escherichia coli (EHEC) (8 %) and enteropathogenic Escherichia coli (EPEC) (2 %). In most cases, the concomitant occurrence of pathotypes was more common, the most frequent of which were ETEC + STEC (33 %), ETEC + EHEC (15 %) and ETEC + EPEC (3 %). The STEC pathotype (30 %) was also found more frequently in the Pantanal, followed by EHEC (12 %), ETEC (9 %) and EPEC (6 %). The STEC pathotype had a significantly higher frequency of multidrug resistance (p = 0.0486) compared to the other pathotypes identified. The frequency of resistance was lower in strains from the Pantanal biome compared to those from the Cerrado biome. Although some factors are discussed in this paper, it is necessary to clarify the reasons for this difference and the possible impacts of these findings on both animal and human health in the region., Competing Interests: Declaration of competing interest I declare not to be presented with any type of conflict of interest between the participants or any other collaborator, direct or indirect, for the development of the Research Project published “Escherichia coli pathotypes in cattle: Distribution of antimicrobial-resistant strains between the Pantanal and Cerrado biomes in Brazil”, researchers involved are: Juliane Francielle Tutija, Mariana Green, Erica Verneque Martinez, Jessica Fernanda Gomes da Silva, Milena Batista Machado Araripe, Carlos Alberto do Nascimento Ramos, Cássia Rejane Brito Leal, Antônio Francisco de Souza Filho., (Copyright © 2024 Elsevier Ltd. All rights reserved.)
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- 2024
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47. Discrepancy in medications reported by elderly patients in the dental office and in their electronic medical records: A pilot study.
- Author
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Abeleira-Pazos MT, García-Mato E, Diniz-Freitas M, Muñoz-Navarro C, Lago-Méndez L, Vázquez-García E, and Rivas-Mundiña B
- Subjects
- Humans, Aged, Pilot Projects, Male, Female, Spain, Dental Offices, Middle Aged, Aged, 80 and over, Polypharmacy, Dental Records, Electronic Health Records
- Abstract
Aims: This study's main objective was to analyze the discrepancy between the dental medication record (DMR) and the physician-prescribed active medications recorded in the medical medication record (MMR)., Methods: The study group consisted of 100 adults who attended the University Dental Clinic (Santiago de Compostela, Spain) requesting dental care. A dental history was created for all participants that included the DMR. The MMR were compiled from their electronic medical records., Results: About 80% of the patients consumed at least one drug (94.2% of those >65 years) and 19% took more than five drugs (26.4% of those > 65 years). In total, 54% of the patients had some discrepancy between the medications recorded in the DMR and those in the MMR (48.4% for those ≤65 years and 64.7% for those >65 years). The rate of participants who omitted some drugs was higher for those >65 years. The drugs most omitted from the DMR were analgesics/opioids, antihypertensives and anxiolytics/hypnotics/sedatives., Conclusions: It is imperative to access the MMR of patients requesting dental care because a significant number of medications are not reflected in their DMR. These discrepancies may be particularly common and relevant in elderly patients, in whom multimorbidity and polypharmacy are more frequent., (© 2024 Special Care Dentistry Association and Wiley Periodicals LLC.)
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- 2024
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48. Detection of Frank's sign in the dental setting: A population-based cohort study.
- Author
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Rivas-Mundiña B, Fernández-Ascariz L, García-Mato E, Diniz-Freitas M, Gude-Sampedro F, and Abeleira-Pazos M
- Subjects
- Humans, Male, Female, Cross-Sectional Studies, Adult, Middle Aged, Spain, Aged, Cohort Studies, Cardiovascular Diseases epidemiology, Aged, 80 and over, Ear, External anatomy & histology
- Abstract
Background: In 1973, Saunders T. Frank described the diagonal earlobe crease (DELC) as a potential marker of cardiovascular disease. However, this anatomical finding is not routinely examined. The aim of this study was to assess the presence of this crease in the general population attending a dental setting and describe its anatomical variations to be able to categorize it as a physical sign., Methodology: A study group of 1050 white adults were selected, as participants in the framework of the "A Estrada Study of Glycation and Inflammation" (AEGIS), a cross-sectional, population-based descriptive study of a representative sample of the general adult population of the municipality of A Estrada (Pontevedra, Spain). Each participant's age, sex, and preferred head position when sleeping were recorded. Both earlobes were visually inspected and the anatomical variables of the crease were recorded (unilateral or bilateral, length, depth, and presence of secondary creases). The relationship between the study variables was analyzed using the chi-squared test, Student's t-test, the analysis of variance (ANOVA), and the nonparametric tests of Mann-Whitney and Kruskal-Wallis., Results: The DELC was observed in 65.2% of the participants. In 71.5% of the cases, the sign was complete (occupying the space from the tragus to the posterior edge of the earlobe); in 56.9% of the cases, the sign was bilateral; in 45.1% of the cases it was deep; and in the 43.6% of the cases, accessory creases were identified. Neither sex nor the habitual head position when sleeping were related to the prevalence or characteristics of the DELC. The prevalence, extent and depth of Frank's sign increased significantly with age (p < .001)., Conclusion: The prevalence of the DELC increases significantly with age, and its morphological characteristics are accentuated. This finding, therefore, gains special relevance as a marker of potential cardiovascular disease when observed in young adults., (© 2024 The Authors. Special Care in Dentistry published by Special Care Dentistry Association and Wiley Periodicals LLC.)
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- 2024
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49. Pyrazoles have a multifaceted anti-inflammatory effect targeting prostaglandin E 2 , cyclooxygenases and leukocytes' oxidative burst.
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Rocha S, Silva J, Silva VLM, Silva AMS, Corvo ML, Freitas M, and Fernandes E
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- Humans, Anti-Inflammatory Agents pharmacology, Anti-Inflammatory Agents chemistry, Structure-Activity Relationship, Cyclooxygenase Inhibitors pharmacology, Pyrazoles pharmacology, Pyrazoles chemistry, Dinoprostone metabolism, Respiratory Burst drug effects, Leukocytes drug effects, Leukocytes metabolism, Cyclooxygenase 2 metabolism, Cyclooxygenase 1 metabolism
- Abstract
Elevated levels of prostaglandin E
2 have been implicated in the pathophysiology of various diseases. Anti-inflammatory drugs that act through the inhibition of cyclooxygenase enzymatic activity, thereby leading to the suppression of prostaglandin E2 , are often associated with several side effects due to their non-specific inhibition of cyclooxygenase enzymes. Consequently, the targeted suppression of prostaglandin E2 production with innovative molecules and/or mechanisms emerges as a compelling therapeutic strategy for the treatment of inflammatory-related diseases. Therefore, in this study, a systematic analysis of 28 pyrazole derivatives was conducted to explore their potential mechanisms for reducing prostaglandin E2 levels. In this context, the evaluation of these derivatives extended to examining their capacity to reduce prostaglandin E2 in vitro in human whole blood, inhibit cyclooxygenase-1 and cyclooxygenase-2 enzymes, modulate cyclooxygenase-2 expression, and suppress oxidative burst in human leukocytes. The results enabled the establishment of significant structure-activity relationships, elucidating key determinants for their activities. In particular, the 4-styryl group on the pyrazole moiety and the presence of chloro substitutions were identified as key determinants. Pyrazole 8 demonstrated the capacity to reduce prostaglandin E2 levels by downregulating cyclooxygenase-2 expression, and pyrazole-1,2,3-triazole 18 emerged as a dual-acting agent, inhibiting human leukocytes' oxidative burst and cyclooxygenase-2 activity. Furthermore, pyrazole 26 demonstrated effective reduction of prostaglandin E2 levels through selective cyclooxygenase-1 inhibition. These results underscore the multifaceted anti-inflammatory potential of pyrazoles, providing new insights into the substitutions and structural frameworks that are beneficial for the studied activity., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)- Published
- 2024
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50. Are history of falls and fear of falling associated with mobility in community-dwelling older adults?
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Gonçalves C, Alves Freitas M, Lena Mendrano A, Franciny de Souza L, Coan Fontanela L, de Souza Moreira B, Danielewicz AL, and de Avelar NCP
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- Humans, Aged, Female, Male, Cross-Sectional Studies, Risk Factors, Brazil, Middle Aged, Age Factors, Logistic Models, Aged, 80 and over, Multivariate Analysis, Prevalence, Aging, Odds Ratio, Accidental Falls, Fear, Mobility Limitation, Independent Living, Geriatric Assessment
- Abstract
Evidence has suggested that a history of falls and fear of falling (FOF) are associated with reduced mobility among older adults. Although many studies have explored the association between the history of falls and FOF in the context of decreased mobility, most have had small sample sizes, limiting the generalizability of the results. Therefore, this study sought to contribute to the body of knowledge around these constructs to further support the previous findings. To investigate the association between a history of falls and FOF with low mobility in community-dwelling older adults. This cross-sectional study included 308 older adults (69.9 ± 7.1 years, 57.8% female). The Timed Up and Go (TUG) test was used to classify mobility limitations in participants and the Falls Efficacy Scale-International - Brazil was used to quantify FOF. Participants were also asked if they had fallen in the previous 12 months. Multivariable logistic regression was used. The prevalence rates of a history of falls and FOF were 32.7 and 48.4%, respectively. Older adults with a history of falls and FOF had 2.20 (95%CI: 1.20; 4.02) and 3.80 (95%CI: 1.90; 7.58) greater odds of presenting low mobility than older adults without these health problems, respectively. History of falls and FOF are associated with higher odds of low mobility in community-dwelling older adults. Therefore, it is of the utmost importance to introduce public health programs aimed at preventing falls in older adults to reduce possible adverse health outcomes, including low mobility.
- Published
- 2024
- Full Text
- View/download PDF
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