73 results on '"A. Lencastre"'
Search Results
2. Psychometric analysis of the body responsiveness questionnaire in the Portuguese population
- Author
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Torres, Sandra, primary, Vieira, Ana Isabel, additional, Vieira, Filipa Mucha, additional, Lencastre, Leonor, additional, Guerra, Marina Prista, additional, Miller, Kylee M., additional, and Barbosa, Maria Raquel, additional
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- 2023
- Full Text
- View/download PDF
3. Treatments for intracranial hypertension in acute brain-injured patients: grading, timing, and association with outcome. Data from the SYNAPSE-ICU study
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Robba, Chiara, Graziano, Francesca, Guglielmi, Angelo, Rebora, Paola, Galimberti, Stefania, Taccone, Fabio S, Citerio, Giuseppe, Walter Videtta, Gustavo Domeniconi, María Estrella Giménez, Mariela Fumale, Edgar Daniel Amundarain, Matias Casanova, Michael Reade, Elizabeth Hallt, David Pearson, Ian Seppelt, Raimund Helbok, Valery Davidovich, Geert Meyfroidt, Ilaria Alice Crippa, Liese Mebis, Patrick Biston, Stijn Van De Velde, Glorieux Denis, Pedro Kurtz, Samia Yasin Wayhs, Mypinder Sekhon, Donald Griesdale, Andrea Rigamonti, José Miguel Montes, Rodrigo Pérez-Araos, Jorge H Mejia-Mantilla, Andrés Gempeler, Ray Mendoza, Natasa Kovac, Hedgar Berty Gutiérrez, Vera Spatenkova, Marek Fencl, Roman Gal, Ondrej Hrdy, Kamil Vrbica, Josef Skola, Eva Provaznikova, Jakub Kletecka, Pavel Lavicka, Piergiorgio Bresil, Marianne Levin, Josefine Thomsen, Thomas Egmose Larsen, Henrik Westy Hoffmeyer, Morten Olskjaer Holm, Jesper Borg Andersen, Birgitte Majholm, Margit Smitt, Heidi Shil Eddelien, Manuel Jibaja, Freddy Maldonado, María Fernanda García, Karim Asehnoune, Bertrand Pons, Gérard Audibert, Manon Lucca, Guillaume Besch, Pierluigi Banco, Raphael Cinotti, Hervé Q Uintard, Benjamin Soyer, Anais Caillard, Clement Gakuba, Romain Sonneville, Stefan Wolf, Kristina Fuest, Lea Albrecht, Sarah Grotheer, Sandro M Krieg, Stefan J Schaller, Charikleia Vrettou, Eftychia Kontoudaki, Anna Efthymiou, Elena Palli, Demosthenes Makris, Chrysi Diakaki, Christina Iasonidou, Aikaterini Dimoula, Georgios Koukoulitsios, George Kyriazopoulos, Nikolas Pantelas, Syragoula Tsikriki, Electra Eleni Stamou, Achileas Giannopoulos, Eleni Mouloudi, Ping Shum Hoi, Yan Chan Cheuk, Hewa Kandamby Darshana, Krisztián Tánczos, Gabor Nardai, Zoltan Szentkereszty, Harsh Sapra, Deepak Gupta, Kaveri Sharma, Saurabh Anand, Ankur Luthra, Summit Bloria, Rajeev Chauhan, Nidhi Panda, Ahmad Ozair, Bram Kilapong, Anass Alsudani, Giuseppe Citerio, Alessandra Soragni, Alessandro Motta, Andrea Marudi, Elisabetta Bertellini, Anselmo Caricato, Camilla Gelormini, Eleonora Ioannoni, Eleonora Stival, Serena Silva, Federico Pozzi, Iole Brunetti, Andrea Cortegiani, Edoardo Picetti, Federico Villa, Italo Calamai, Maria Chiara Casadio, Maria Concetta Quartarone, Marzia Grandis, Federico Magni, Silvia Del Bianco, Claudia Bonetti, Virginia Buldini, Aimone Giugni, Simone Maria Zerbi, Marco Carbonara, Antonella Cotoia, Antonio Izzi, Olegs Sabelnikovs, Muhammed Elhadi, Hazem Ahmed, Silvio A Ñamendys Silva, Gilberto Adrian Gasca López, Gentle S Shrestha, Shirish Maskey, Tamanna Bajracharya, Khadka Nilam, Prakash Kafle, Laleet Rajbanshi, Yam Bahadur Roka, Olufemi Idowu, Khan Muhammad Mukhtar, Juan Luis Pinedo Portilla, Klaudyna Kojder, Irene Aragao, Ricardo Freitas, Marco Simoes, Dario Batista, Cecília Pacheco, Fátima Assunção, Luís Lencastre, Pedro Cavaleiro, Mohamed Abdelaty, Alex Gritsan, Sergey Khomiakov Sergey, Dovbysh Nikolay, Yaseen Arabi, Primoz Gradisek, Petra Forjan, Mara Škoti, Suada Filekovic Ribaric, Nataša Milivojevic, Sergeja Kozar, Rafael Badenes, Aaron Blandino Ortiz, Mikel Celaya Lopez, Laura Galarza, Luisa Corral, Africa Lores, Ricard Soley, Laura Pariente, Pablo López Ojeda, Maria Dolores Arias Verdu, Luis Javier Yuste Dominguez, Maria Isabel Gonzalez Perez, Mireia Anglada, Patricia Duque, Ainhoa Serrano, Berta Monleon, Vanessa Blazquez, Mauro Oddo, Samia Abed Maillard, Paola Morelli, John-Paul Miroz, Eva Favre, Walid Sellami, Massimo Lamperti, Jamil Dibu, Richard Sivities, Angelos Kolias, Chris Thompson, Christopher Hawthorne, Justin Roberts, Lara Prisco, Roger Lightfoot, Josè I Suarez, Luci Rivera-Lara, Susanne Muehlschlegel, Juan Padilla, Sanjeev Sivakumar, Daiwai Olson, Robba, C, Graziano, F, Guglielmi, A, Rebora, P, Galimberti, S, Taccone, F, Citerio, G, Robba, Chiara, Graziano, Francesca, Guglielmi, Angelo, Rebora, Paola, Galimberti, Stefania, Taccone, Fabio S, Citerio, Giuseppe, and Walter Videtta, Gustavo Domeniconi, María Estrella Giménez, Mariela Fumale, Edgar Daniel Amundarain, Matias Casanova, Michael Reade, Elizabeth Hallt, David Pearson, Ian Seppelt, Raimund Helbok, Valery Davidovich, Geert Meyfroidt, Ilaria Alice Crippa, Liese Mebis, Patrick Biston, Stijn Van De Velde, Glorieux Denis, Pedro Kurtz, Samia Yasin Wayhs, Mypinder Sekhon, Donald Griesdale, Andrea Rigamonti, José Miguel Montes, Rodrigo Pérez-Araos, Jorge H Mejia-Mantilla, Andrés Gempeler, Ray Mendoza, Natasa Kovac, Hedgar Berty Gutiérrez, Vera Spatenkova, Marek Fencl, Roman Gal, Ondrej Hrdy, Kamil Vrbica, Josef Skola, Eva Provaznikova, Jakub Kletecka, Pavel Lavicka, Vera Spatenkova, Piergiorgio Bresil, Marianne Levin, Piergiorgio Bresil, Josefine Thomsen, Thomas Egmose Larsen, Henrik Westy Hoffmeyer, Morten Olskjaer Holm, Jesper Borg Andersen, Birgitte Majholm, Margit Smitt, Heidi Shil Eddelien, Manuel Jibaja, Freddy Maldonado, María Fernanda García, Karim Asehnoune, Bertrand Pons, Gérard Audibert, Manon Lucca, Guillaume Besch, Pierluigi Banco, Karim Asehnoune, Raphael Cinotti, Hervé Q Uintard, Benjamin Soyer, Anais Caillard, Clement Gakuba, Romain Sonneville, Stefan Wolf, Kristina Fuest, Lea Albrecht, Sarah Grotheer, Sandro M Krieg, Stefan J Schaller, Charikleia Vrettou, Eftychia Kontoudaki, Anna Efthymiou, Elena Palli, Demosthenes Makris, Chrysi Diakaki, Christina Iasonidou, Aikaterini Dimoula, Georgios Koukoulitsios, George Kyriazopoulos, Nikolas Pantelas, Syragoula Tsikriki, Electra Eleni Stamou, Charikleia Vrettou, Achileas Giannopoulos, Eleni Mouloudi, Ping Shum Hoi, Yan Chan Cheuk, Hewa Kandamby Darshana, Krisztián Tánczos, Gabor Nardai, Zoltan Szentkereszty, Harsh Sapra, Deepak Gupta, Kaveri Sharma, Saurabh Anand, Ankur Luthra, Summit Bloria, Rajeev Chauhan, Nidhi Panda, Ahmad Ozair, Bram Kilapong, Anass Alsudani, Giuseppe Citerio, Alessandra Soragni, Alessandro Motta, Andrea Marudi, Elisabetta Bertellini, Anselmo Caricato, Camilla Gelormini, Eleonora Ioannoni, Eleonora Stival, Serena Silva, Federico Pozzi, Iole Brunetti, Andrea Cortegiani, Edoardo Picetti, Federico Villa, Italo Calamai, Maria Chiara Casadio, Maria Concetta Quartarone, Marzia Grandis, Federico Magni, Silvia Del Bianco, Claudia Bonetti, Virginia Buldini, Aimone Giugni, Simone Maria Zerbi, Marco Carbonara, Antonella Cotoia, Antonio Izzi, Olegs Sabelnikovs, Muhammed Elhadi, Hazem Ahmed, Silvio A Ñamendys Silva, Gilberto Adrian Gasca López, Gentle S Shrestha, Shirish Maskey, Tamanna Bajracharya, Khadka Nilam, Prakash Kafle, Laleet Rajbanshi, Yam Bahadur Roka, Olufemi Idowu, Khan Muhammad Mukhtar, Juan Luis Pinedo Portilla, Klaudyna Kojder, Irene Aragao, Ricardo Freitas, Marco Simoes, Dario Batista, Cecília Pacheco, Fátima Assunção, Luís Lencastre, Pedro Cavaleiro, Mohamed Abdelaty, Alex Gritsan, Sergey Khomiakov Sergey, Dovbysh Nikolay, Yaseen Arabi, Primoz Gradisek, Petra Forjan, Mara Škoti, Suada Filekovic Ribaric, Primoz Gradisek, Nataša Milivojevic, Sergeja Kozar, Rafael Badenes, Aaron Blandino Ortiz, Mikel Celaya Lopez, Laura Galarza, Luisa Corral, Africa Lores, Ricard Soley, Laura Pariente, Pablo López Ojeda, Maria Dolores Arias Verdu, Luis Javier Yuste Dominguez, Maria Isabel Gonzalez Perez, Mireia Anglada, Patricia Duque, Ainhoa Serrano, Berta Monleon, Vanessa Blazquez, Mauro Oddo, Samia Abed Maillard, Paola Morelli, John-Paul Miroz, Eva Favre, Walid Sellami, Massimo Lamperti, Jamil Dibu, Richard Sivities, Angelos Kolias, Chris Thompson, Christopher Hawthorne, Justin Roberts, Lara Prisco, Roger Lightfoot, Josè I Suarez, Luci Rivera-Lara, Susanne Muehlschlegel, Juan Padilla, Sanjeev Sivakumar, Daiwai Olson
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Subarachnoid haemorrhage ,Traumatic brain injury ,Intracranial pressure ,Therapy intensity level ,Critical Care and Intensive Care Medicine ,Intracranial haemorrhage - Abstract
Purpose: Uncertainties remain about the safety and efficacy of therapies for managing intracranial hypertension in acute brain injured (ABI) patients. This study aims to describe the therapeutical approaches used in ABI, with/without intracranial pressure (ICP) monitoring, among different pathologies and across different countries, and their association with sixmonths mortality and neurological outcome. Methods: A preplanned subanalysis of the SYNAPSE-ICU study, a multicentre, prospective, international, observational cohort study, describing the ICP treatment, graded according to Therapy Intensity Level (TIL) scale, in patients with ABI during the first week of intensive care unit (ICU) admission. Results: 2320 patients were included in the analysis. The median age was 55 (I-III quartiles = 39-69) years, and 800 (34.5%) were female. During the first week from ICU admission, no-basic TIL was used in 382 (16.5%) patients, mild-moderate in 1643 (70.8%), and extreme in 295 cases (eTIL, 12.7%). Patients who received eTIL were younger (median age 49 (I-III quartiles = 35-62) vs 56 (40-69) years, p
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- 2023
4. Kikuchi-Fujimoto Disease: A Case of SARS-CoV-2 Infection Triggering the Rare Disease
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Lencastre Monteiro, Rita, primary, Cabaço, Sérgio, additional, Soares, Leonor, additional, Inácio, Hugo, additional, and Nazário Leão, Rodrigo, additional
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- 2023
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5. EyeT4Empathy: Dataset of foraging for visual information, gaze typing and empathy assessment
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Lencastre, Pedro, primary, Bhurtel, Samip, additional, Yazidi, Anis, additional, e Mello, Gustavo B. M., additional, Denysov, Sergiy, additional, and Lind, Pedro G., additional
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- 2022
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6. Intestinal carriage of extended-spectrum beta-lactamase–producing Enterobacteriaceae at admission in a Portuguese hospital
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Laurent Poirel, Maria Luísa Gonçalves, Augusto Machado E Costa, Ana Luísa Pereira, Elizeth Lopes, Marta Aires-de-Sousa, and Hermínia de Lencastre
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0301 basic medicine ,Microbiology (medical) ,medicine.medical_specialty ,Klebsiella pneumoniae ,medicine.medical_treatment ,030106 microbiology ,Microbial Sensitivity Tests ,Fosfomycin ,beta-Lactamases ,Feces ,03 medical and health sciences ,0302 clinical medicine ,Antibiotic resistance ,Enterobacteriaceae ,Drug Resistance, Multiple, Bacterial ,Internal medicine ,Prevalence ,medicine ,Tobramycin ,Humans ,Prospective Studies ,030212 general & internal medicine ,Escherichia coli Infections ,Portugal ,biology ,business.industry ,Enterobacteriaceae Infections ,Rectum ,General Medicine ,biochemical phenomena, metabolism, and nutrition ,bacterial infections and mycoses ,biology.organism_classification ,Anti-Bacterial Agents ,Klebsiella Infections ,3. Good health ,Hospitalization ,Intestines ,Ciprofloxacin ,Infectious Diseases ,Carrier State ,Beta-lactamase ,Multilocus sequence typing ,Gentamicin ,business ,medicine.drug - Abstract
To evaluate the prevalence of extended-spectrum β-lactamase (ESBL)–producing Enterobacteriaceae fecal carriers at admission in a Portuguese hospital and to determine the epidemiology and antimicrobial resistance patterns of ESBL-producing isolates. During a 2-month period, rectal swabs were collected at hospital admission from 151 at-risk patients. In addition, 48 rectal swabs were obtained from weekly screenings of 37 patients hospitalized for > 48 h. All ESBL/carbapenemase-producing isolates were tested for antimicrobial susceptibility and characterized by PFGE and MLST. The prevalence of ESBL producers at hospital admission was 17% and 24% among at-risk patients hospitalized for > 48 h, while the prevalence of carbapenemase producers was 3% in both cases. Most of the isolates were Escherichia coli (54%) and Klebsiella pneumoniae (41%). The most common ESBL identified was CTX-M-15 (n = 17/34; 50%), followed by CTX-M-27 (n = 10; 29%), CTX-M-33 (n = 4; 12%), SHV-12 (n = 2), and CTX-M-55 (n = 1). The 20 E. coli isolates were distributed into 16 PFGE types and nine sequence types (ST), with 60% of the isolates belonging to ST131. The 15 K. pneumoniae were grouped into 12 PFGE types and nine STs, with three STs (ST17, ST449, ST147) corresponding to 60% of the isolates. A high proportion of isolates showed resistance to ciprofloxacin (86%), trimethoprim-sulfamethoxazole (68%), tobramycin (57%), and gentamicin (43%). All isolates remained susceptible to fosfomycin. A high prevalence of ESBL-producing Enterobacteriaceae was found at hospital admission among at-risk patients and > 50% of the isolates showed resistance to first-line antibiotics for the treatment of lower urinary tract infections, leaving fosfomycin as an alternative.
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- 2019
7. Emergence of methicillin resistance predates the clinical use of antibiotics
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Larsen, Jesper, primary, Raisen, Claire L., additional, Ba, Xiaoliang, additional, Sadgrove, Nicholas J., additional, Padilla-González, Guillermo F., additional, Simmonds, Monique S. J., additional, Loncaric, Igor, additional, Kerschner, Heidrun, additional, Apfalter, Petra, additional, Hartl, Rainer, additional, Deplano, Ariane, additional, Vandendriessche, Stien, additional, Černá Bolfíková, Barbora, additional, Hulva, Pavel, additional, Arendrup, Maiken C., additional, Hare, Rasmus K., additional, Barnadas, Céline, additional, Stegger, Marc, additional, Sieber, Raphael N., additional, Skov, Robert L., additional, Petersen, Andreas, additional, Angen, Øystein, additional, Rasmussen, Sophie L., additional, Espinosa-Gongora, Carmen, additional, Aarestrup, Frank M., additional, Lindholm, Laura J., additional, Nykäsenoja, Suvi M., additional, Laurent, Frederic, additional, Becker, Karsten, additional, Walther, Birgit, additional, Kehrenberg, Corinna, additional, Cuny, Christiane, additional, Layer, Franziska, additional, Werner, Guido, additional, Witte, Wolfgang, additional, Stamm, Ivonne, additional, Moroni, Paolo, additional, Jørgensen, Hannah J., additional, de Lencastre, Hermínia, additional, Cercenado, Emilia, additional, García-Garrote, Fernando, additional, Börjesson, Stefan, additional, Hæggman, Sara, additional, Perreten, Vincent, additional, Teale, Christopher J., additional, Waller, Andrew S., additional, Pichon, Bruno, additional, Curran, Martin D., additional, Ellington, Matthew J., additional, Welch, John J., additional, Peacock, Sharon J., additional, Seilly, David J., additional, Morgan, Fiona J. E., additional, Parkhill, Julian, additional, Hadjirin, Nazreen F., additional, Lindsay, Jodi A., additional, Holden, Matthew T. G., additional, Edwards, Giles F., additional, Foster, Geoffrey, additional, Paterson, Gavin K., additional, Didelot, Xavier, additional, Holmes, Mark A., additional, Harrison, Ewan M., additional, and Larsen, Anders R., additional
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- 2022
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8. Staphylococcus aureus nasal carriage among homeless population in Lisbon, Portugal
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Teresa Conceição, Marta Aires-de-Sousa, Suzilaine Rodrigues, Hugo Martins, and Hermínia de Lencastre
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Adult ,Male ,Methicillin-Resistant Staphylococcus aureus ,0301 basic medicine ,Microbiology (medical) ,Staphylococcus aureus ,medicine.medical_specialty ,Meticillin ,030106 microbiology ,Mupirocin ,Microbial Sensitivity Tests ,Staphylococcal infections ,medicine.disease_cause ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Internal medicine ,Drug Resistance, Bacterial ,Prevalence ,medicine ,Humans ,030212 general & internal medicine ,Antiinfective agent ,Portugal ,business.industry ,Clindamycin ,General Medicine ,Middle Aged ,Staphylococcal Infections ,biochemical phenomena, metabolism, and nutrition ,bacterial infections and mycoses ,medicine.disease ,Methicillin-resistant Staphylococcus aureus ,Anti-Bacterial Agents ,Bacterial Typing Techniques ,Infectious Diseases ,Carriage ,chemistry ,Carrier State ,Ill-Housed Persons ,Female ,Nasal Cavity ,business ,medicine.drug - Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) nasal carriage is a major risk factor for infection, namely among populations in the community with inherent prompting factors, such as the homeless. In Portugal, there are no data on S. aureus/MRSA nasal carriage among the homeless community. A total of 84 homeless individuals living in Lisbon (34 with no permanent address and 50 living in shelter) were nasally screened for S. aureus/ MRSA. All isolates were characterized to determine antimicrobial susceptibility and clonal type. A total of 43 (51.2%) S. aureus carriers were identified, including a single individual colonized with MRSA (1.2%). S. aureus carriage rate was higher among individuals with no permanent address (58.8% versus 46%), younger (45.7 ± 12.7 versus 52.5 ± 10.8 years), and with diagnosis of asthma (9% versus 0%). The single MRSA belonged to the EMRSA-15 clone (PFGE D, ST15-SCCmec IVh, and spa type t790). Almost half of the methicillin-susceptible S. aureus (MSSA) isolates (41.9%, n = 18) belonged to two major clones, ST398-t1451 (n = 13) and ST30-t399/t11980/t12808 associated with PFGE I (n = 5). A high proportion of isolates showed non-susceptibility to mupirocin (64%), erythromycin (45%), and fusidic acid (20%) and induced resistance to clindamycin (39%). None of the isolates harboured PVL. Our results suggest that the homeless population of Lisbon does not constitute a reservoir of MRSA in the community, but harbour the highly transmissible ST398-t1451 MSSA lineage.
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- 2019
9. Synovial fluid but not plasma interleukin-8 is associated with clinical severity and inflammatory markers in knee osteoarthritis women with joint effusion
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García-Manrique, María, primary, Calvet, Joan, additional, Orellana, Cristóbal, additional, Berenguer-Llergo, Antoni, additional, Garcia-Cirera, Silvia, additional, Llop, Maria, additional, Albiñana-Giménez, Néstor, additional, Galisteo-Lencastre, Carlos, additional, and Gratacós, Jordi, additional
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- 2021
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10. Students’ perceptions on distance education: A multinational study
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Joan Thormann, José Alberto Lencastre, Patricia Fidalgo, Oleksandr Kulyk, and Universidade do Minho
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Undergraduate students ,Ciências da Educação [Ciências Sociais] ,Higher education ,media_common.quotation_subject ,Distance education ,Social Sciences ,Education ,Perception ,ComputingMilieux_COMPUTERSANDEDUCATION ,Educational strategy ,0501 psychology and cognitive sciences ,Time management ,media_common ,lcsh:LC8-6691 ,Medical education ,lcsh:Special aspects of education ,lcsh:T58.5-58.64 ,lcsh:Information technology ,business.industry ,4. Education ,Interpretation (philosophy) ,05 social sciences ,Educational technology ,Multinational study ,050301 education ,Ciências Sociais::Ciências da Educação ,Computer Science Applications ,Multinational corporation ,Psychology ,business ,0503 education ,Perceptions of distance education ,050104 developmental & child psychology - Abstract
Many universities offer Distance Education (DE) courses and programs to address the diverse educational needs of students and to stay current with advancing technology. Some Institutions of Higher Education (IHE) that do not offer DE find it difficult to navigate through the steps that are needed to provide such courses and programs. Investigating learners’ perceptions, attitudes and willingness to try DE can provide guidance and recommendations for IHEs that are considering expanding use of DE formats. A survey was distributed to undergraduate students in Portugal, UAE and Ukraine. The results of this pilot study showed that in all three countries, students’ major concerns about such programs were time management, motivation, and English language skills. Although students were somewhat apprehensive many indicated they were interested in taking DE courses. Six recommendations informed by interpretation of students’ responses and the literature, are offered to assist institutions who want to offer DE as part of their educational strategy., “This work is funded by CIEd – Research Centre on Education, Institute of Education, University of Minho, projects UIDB/01661/2020 and UIDP/01661/2020, through national funds of FCT/MCTES-PT.”
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- 2020
11. Smart Education as Empowerment: Outlining Veteran Teachers’ Training to Promote Digital Migration
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Morgado, José Carlos, primary, Lencastre, José Alberto, additional, Freires, Thiago, additional, and Bento, Marco, additional
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- 2021
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12. Ciclopirox Hydroxypropyl Chitosan (HPCH) Nail Lacquer: A Review of Its Use in Onychomycosis
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Piraccini, Bianca Maria, primary, Iorizzo, Matilde, additional, Lencastre, André, additional, Nenoff, Pietro, additional, and Rigopoulos, Dimitris, additional
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- 2020
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13. Re-evaluation of Streptococcus pneumoniae carriage in Portuguese elderly by qPCR increases carriage estimates and unveils an expanded pool of serotypes
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Almeida, Sónia T., primary, Pedro, Tânia, additional, Paulo, A. Cristina, additional, de Lencastre, Hermínia, additional, and Sá-Leão, Raquel, additional
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- 2020
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14. Students’ perceptions on distance education: A multinational study
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Fidalgo, Patricia, primary, Thormann, Joan, additional, Kulyk, Oleksandr, additional, and Lencastre, José Alberto, additional
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- 2020
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15. Intestinal carriage of extended-spectrum beta-lactamase–producing Enterobacteriaceae at admission in a Portuguese hospital
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Aires-de-Sousa, Marta, primary, Lopes, Elizeth, additional, Gonçalves, Maria Luísa, additional, Pereira, Ana Luísa, additional, Machado e Costa, Augusto, additional, de Lencastre, Hermínia, additional, and Poirel, Laurent, additional
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- 2019
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16. Frequent occurrence of trimethoprim-sulfamethoxazole hetero-resistant Staphylococcus aureus isolates in different African countries
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H. de Lencastre, Céline Coelho, and Marta Aires-de-Sousa
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Methicillin-Resistant Staphylococcus aureus ,0301 basic medicine ,Microbiology (medical) ,medicine.medical_specialty ,medicine.drug_class ,030106 microbiology ,Antibiotics ,Clone (cell biology) ,Microbial Sensitivity Tests ,Drug resistance ,Biology ,medicine.disease_cause ,Microbiology ,03 medical and health sciences ,Minimum inhibitory concentration ,Medical microbiology ,Drug Resistance, Bacterial ,Trimethoprim, Sulfamethoxazole Drug Combination ,Prevalence ,medicine ,Humans ,Sulfamethoxazole ,General Medicine ,Staphylococcal Infections ,bacterial infections and mycoses ,Trimethoprim ,Anti-Bacterial Agents ,Infectious Diseases ,Genes, Bacterial ,Staphylococcus aureus ,Africa ,Genetic Fitness ,medicine.drug - Abstract
High rates of trimethoprim/sulfamethoxazole (SXT) resistance, a combination of two antifolate antibiotics trimethoprim (TMP) and sulfamethoxazole (SMZ), have been reported among Staphylococcus aureus isolates in Portuguese-speaking African countries. Our study aimed to evaluate the occurrence of TMP resistance markers in major SXTR methicillin-resistant S. aureus (MRSA) clones from these countries. We accessed also different fitness traits that could explain the success of these isolates over the Brazilian MRSA (the most successful SXTR MRSA clone worldwide but never identified in these countries). Minimum inhibitory concentrations for SXT, TMP and SMZ were determined, and genes encoding TMP resistance (dfrG, dfrA, dfrK and dfrB) were searched. Representatives of the Brazilian clone and of the major MRSA African clones were evaluated for their fitness by individual growth curves, competition assays, survival under desiccation, autolytic activity, resistance to oxidative stress, and also growth at high osmolarity and in acid and alkaline environments. Although all African isolates showed high-level resistance to TMP, the majority presented hetero-resistance to SXT. TMP resistance was linked to the presence of dfrG (78%), dfrA (19%) or both (3%) genes. Compared to the Brazilian clone, the African isolates showed higher growth rates and autolytic activity, and better survival to desiccation and alkaline conditions. Since isolates exhibiting SXT hetero-resistance are frequent in Africa, the implementation of standardized guidelines to detect this phenomenon is of major interest. The predominant MRSA clones in Portuguese-speaking African countries likely possess significant advantages over other clones, such as the Brazilian MRSA, that may explain their epidemiological success.
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- 2017
17. Natural colorants from filamentous fungi
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Fábio Aurélio Esteves Torres, Angela Faustino Jozala, Bruna Regina Zaccarim, Maria Francisca Simas Teixeira, Carolina Alves dos Santos, Letícia Celia de Lencastre Novaes, and Valéria de Carvalho Santos-Ebinuma
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0106 biological sciences ,0301 basic medicine ,Future studies ,business.industry ,Consumer demand ,Fungi ,Pigments, Biological ,General Medicine ,01 natural sciences ,Applied Microbiology and Biotechnology ,Natural (archaeology) ,Biotechnology ,03 medical and health sciences ,030104 developmental biology ,010608 biotechnology ,Biochemical engineering ,Coloring Agents ,business - Abstract
In the last years, there is a trend towards the replacement of synthetic colorants by natural ones, mainly due to the increase of consumer demand for natural products. The natural colorants are used to enhance the appearance of pharmaceutical products, food, and different materials, making them preferable or attractive. This review intends to provide and describe a comprehensive overview of the history of colorants, from prehistory to modern time, of their market and their applications, as well as of the most important aspects of the fermentation process to obtain natural colorants. Focus is given to colorants produced by filamentous fungal species, aiming to demonstrate the importance of these microorganisms and biocompounds, highlighting the production performance to get high yields and the aspects of conclusion that should be taken into consideration in future studies about natural colorants.
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- 2016
18. Methicillin-resistant Staphylococcus aureus
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Hermínia de Lencastre, Javier Garau, Andie S Lee, Stéphan Juergen Harbarth, Andreas Peschel, Jan Kluytmans, and Surbhi Malhotra-Kumar
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Methicillin-Resistant Staphylococcus aureus ,0301 basic medicine ,Staphylococcus aureus ,medicine.drug_class ,030106 microbiology ,Antibiotics ,Virulence ,Biology ,medicine.disease_cause ,Microbiology ,Methicillin ,03 medical and health sciences ,medicine ,Humans ,Colonization ,ddc:616 ,Transmission (medicine) ,SCCmec ,Bacterial Infections ,General Medicine ,biochemical phenomena, metabolism, and nutrition ,bacterial infections and mycoses ,Antimicrobial ,Methicillin-resistant Staphylococcus aureus ,030104 developmental biology ,Human medicine - Abstract
Since the 1960s, methicillin-resistant Staphylococcus aureus (MRSA) has emerged, disseminated globally and become a leading cause of bacterial infections in both health-care and community settings. However, there is marked geographical variation in MRSA burden owing to several factors, including differences in local infection control practices and pathogen-specific characteristics of the circulating clones. Different MRSA clones have resulted from the independent acquisition of staphylococcal cassette chromosome mec (SCCmec), which contains genes encoding proteins that render the bacterium resistant to most beta-lactam antibiotics (such as methicillin), by several S. aureus clones. The success of MRSA is a consequence of the extensive arsenal of virulence factors produced by S. aureus combined with beta-lactam resistance and, for most clones, resistance to other antibiotic classes. Clinical manifestations of MRSA range from asymptomatic colonization of the nasal mucosa to mild skin and soft tissue infections to fulminant invasive disease with high mortality. Although treatment options for MRSA are limited, several new antimicrobials are under development. An understanding of colonization dynamics, routes of transmission, risk factors for progression to infection and conditions that promote the emergence of resistance will enable optimization of strategies to effectively control MRSA. Vaccine candidates are also under development and could become an effective prevention measure.
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- 2018
19. Treatment Adherence, Meaning in Life and Affects in Quality of Life of HIV/AIDS Patients
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Reis, Ana, primary, Lencastre, Leonor, additional, Jonsson, Catherina, additional, and Guerra, Marina Prista, additional
- Published
- 2019
- Full Text
- View/download PDF
20. Staphylococcus aureus nasal carriage among homeless population in Lisbon, Portugal
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Conceição, Teresa, primary, Martins, Hugo, additional, Rodrigues, Suzilaine, additional, de Lencastre, Hermínia, additional, and Aires-de-Sousa, Marta, additional
- Published
- 2019
- Full Text
- View/download PDF
21. Identification of Streptococcus pneumoniae by a real-time PCR assay targeting SP2020
- Author
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Tavares, Débora A., primary, Handem, Sara, additional, Carvalho, Ricardo J., additional, Paulo, A. Cristina, additional, de Lencastre, Hermínia, additional, Hinds, Jason, additional, and Sá-Leão, Raquel, additional
- Published
- 2019
- Full Text
- View/download PDF
22. Disease-associated genotypes of the commensal skin bacterium Staphylococcus epidermidis
- Author
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Méric, Guillaume, primary, Mageiros, Leonardos, additional, Pensar, Johan, additional, Laabei, Maisem, additional, Yahara, Koji, additional, Pascoe, Ben, additional, Kittiwan, Nattinee, additional, Tadee, Phacharaporn, additional, Post, Virginia, additional, Lamble, Sarah, additional, Bowden, Rory, additional, Bray, James E., additional, Morgenstern, Mario, additional, Jolley, Keith A., additional, Maiden, Martin C. J., additional, Feil, Edward J., additional, Didelot, Xavier, additional, Miragaia, Maria, additional, de Lencastre, Herminia, additional, Moriarty, T. Fintan, additional, Rohde, Holger, additional, Massey, Ruth, additional, Mack, Dietrich, additional, Corander, Jukka, additional, and Sheppard, Samuel K., additional
- Published
- 2018
- Full Text
- View/download PDF
23. Prevalence, risk factors, and epidemiology of methicillin-resistantStaphylococcus aureus carried by adults over 60 years of age
- Author
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Raquel Sá-Leão, Nuno A. Faria, Sónia Nunes, H. de Lencastre, Sónia T. Almeida, and Ana Cristina Paulo
- Subjects
Male ,Methicillin-Resistant Staphylococcus aureus ,Microbiology (medical) ,medicine.medical_specialty ,Pediatrics ,Genotype ,Cross-sectional study ,Bacterial Toxins ,Exotoxins ,Oropharynx ,Staphylococcal infections ,medicine.disease_cause ,Leukocidins ,Risk Factors ,Nasopharynx ,Epidemiology ,Prevalence ,Cluster Analysis ,Humans ,Medicine ,Aged ,Aged, 80 and over ,Portugal ,business.industry ,SCCmec ,General Medicine ,Odds ratio ,Middle Aged ,Staphylococcal Infections ,biochemical phenomena, metabolism, and nutrition ,bacterial infections and mycoses ,medicine.disease ,Methicillin-resistant Staphylococcus aureus ,Molecular Typing ,Cross-Sectional Studies ,Infectious Diseases ,Carriage ,Carrier State ,Multilocus sequence typing ,business - Abstract
The epidemiology of methicillin-resistant Staphylococcus aureus (MRSA) in the community in Portugal is not completely understood. To evaluate S. aureus and MRSA carriage among the elderly, we conducted a large cross-sectional study between April 2010 and December 2012. A total of 3,361 adults over 60 years of age were screened for S. aureus nasopharyngeal and oropharyngeal carriage. MRSA were characterized by staphylococcal cassette chromosome mec (SCCmec) typing, spa typing, multilocus sequence typing (MLST), and tested for the presence of Panton-Valentine leukocidin (PVL). Risk factors for MRSA carriage were identified by multiple logistic regression analysis. The prevalence of S. aureus and MRSA carriage among the elderly was 20.1 % and 1.8 %, respectively. The risk of being an MRSA carrier was higher among the elderly living in retirement homes [odds ratio (OR) = 2.90, 95 % confidence interval (CI): 1.48-5.48] and those that had been hospitalized in the previous year (OR = 2.64, 95 % CI: 1.47-4.58). Among the 62 MRSA isolates, 64.5 % were multidrug-resistant and none carried PVL. Most MRSA (82.3 %) were related to three hospital-associated (HA-MRSA) clones disseminated in Portugal: ST105-II (New York/Japan clone; 43.5 %), ST5-IVc (Pediatric clone; 19.4 %), and ST22-IVh (EMRSA-15 clone; 19.4 %). The New York/Japan and Pediatric clones were significantly associated with carriers living in retirement homes, while the EMRSA-15 clone was associated with carriers that had been hospitalized. We conclude that the elderly population in Portugal is essentially free of MRSA. Given the current European societal challenges for a healthy active aging, these results are of importance to healthcare professionals and public authorities to decide on strategies to promote health in this age group.
- Published
- 2014
24. Methicillin-resistant Staphylococcus aureus
- Author
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Lee, Andie S., primary, de Lencastre, Hermínia, additional, Garau, Javier, additional, Kluytmans, Jan, additional, Malhotra-Kumar, Surbhi, additional, Peschel, Andreas, additional, and Harbarth, Stephan, additional
- Published
- 2018
- Full Text
- View/download PDF
25. First insights of peptidoglycan amidation in Gram-positive bacteria - the high-resolution crystal structure of Staphylococcus aureus glutamine amidotransferase GatD
- Author
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Leisico, Francisco, primary, V. Vieira, Diana, additional, Figueiredo, Teresa A., additional, Silva, Micael, additional, Cabrita, Eurico J., additional, Sobral, Rita G., additional, Ludovice, Ana Madalena, additional, Trincão, José, additional, Romão, Maria João, additional, de Lencastre, Hermínia, additional, and Santos-Silva, Teresa, additional
- Published
- 2018
- Full Text
- View/download PDF
26. Population structure of methicillin-susceptible Staphylococcus aureus (MSSA) in Portugal over a 19-year period (1992–2011)
- Author
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H. de Lencastre, Maria Miragaia, Ana Tavares, and Nuno A. Faria
- Subjects
Adult ,Male ,Methicillin-Resistant Staphylococcus aureus ,Microbiology (medical) ,Staphylococcus aureus ,Veterinary medicine ,Adolescent ,Period (gene) ,Population ,Population structure ,Biology ,Microbiology ,Young Adult ,Pulsed-field gel electrophoresis ,Humans ,Colonization ,Typing ,Child ,education ,Aged ,Cross Infection ,Molecular Epidemiology ,education.field_of_study ,Chi-Square Distribution ,Portugal ,Infant, Newborn ,Infant ,General Medicine ,Middle Aged ,Staphylococcal Infections ,biochemical phenomena, metabolism, and nutrition ,bacterial infections and mycoses ,Community-Acquired Infections ,Infectious Diseases ,Child, Preschool ,Carrier State ,Multilocus sequence typing ,Female ,Methicillin Susceptible Staphylococcus Aureus - Abstract
Despite their clinical relevance, few studies have addressed the epidemiology of methicillin-susceptible S. aureus (MSSA). In particular, it is not clear how MSSA population structure has evolved over time and how it might have been shaped by the emergence of MRSA in the community (CA-MRSA). In the present study we have evaluated the MSSA population structure over time, its geographical distribution and relatedness with MRSA in Portugal. A total of 465 MSSA from infection and colonization, collected over a 19-year period (1992-2011) in the northern, central and southern regions of Portugal were analyzed. Isolates were characterized by spa typing and multilocus-sequence typing (MLST). Isolates with predominant spa types were characterized by pulsed-field gel electrophoresis (PFGE). Isolates relatedness was analyzed by eBURST and BURP. The 172 spa types found among the 465 MSSA were grouped into 18 spa-CC (clonal complexes). Ten clonal types were more prevalent (40 %): one major clone (ST30-t012) was present in the entire study period and all over the country and the other nine were intermittently detected over time (ST5-t002, ST8-t008, ST15-t084, ST34-t166, ST72-t148, ST1-t127, ST7-t091, ST398-t571 and ST34-t136). Interestingly, three MSSA clonal types observed only after 1996 were closely related with CA-MRSA epidemic strains (ST8-t008, ST72-t148 and ST1-t127) found currently in Portugal. The MSSA population in Portugal is genetically diverse; however, some dominant clonal types have been established and widely disseminated for almost two decades. We identified MSSA isolates that were related with emergent CA-MRSA clones found in Portugal.
- Published
- 2013
27. When acrocyanosis in intensive care unit is not due to vasopressor support
- Author
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Luís Lencastre, Catarina S. Nunes, Rosa Carvalho, and Luís Ribeiro
- Subjects
medicine.medical_specialty ,Pain medicine ,Critical Care and Intensive Care Medicine ,law.invention ,Norepinephrine (medication) ,Norepinephrine ,03 medical and health sciences ,0302 clinical medicine ,law ,Anesthesiology ,Humans ,Vasoconstrictor Agents ,Medicine ,Intensive care medicine ,Cyanosis ,030222 orthopedics ,Acrocyanosis ,business.industry ,030229 sport sciences ,Middle Aged ,medicine.disease ,Shock, Septic ,Intensive care unit ,Intensive Care Units ,Female ,Anemia, Hemolytic, Autoimmune ,business ,medicine.drug - Published
- 2017
28. When acrocyanosis in intensive care unit is not due to vasopressor support
- Author
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Nunes, Catarina, primary, Carvalho, Rosa, additional, Ribeiro, Luís, additional, and Lencastre, Luís, additional
- Published
- 2017
- Full Text
- View/download PDF
29. Methicillin-resistant Staphylococcus aureus emerged long before the introduction of methicillin into clinical practice
- Author
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Harkins, Catriona P., primary, Pichon, Bruno, additional, Doumith, Michel, additional, Parkhill, Julian, additional, Westh, Henrik, additional, Tomasz, Alexander, additional, de Lencastre, Herminia, additional, Bentley, Stephen D., additional, Kearns, Angela M., additional, and Holden, Matthew T. G., additional
- Published
- 2017
- Full Text
- View/download PDF
30. Rickettsiosis: a rare challenge in ICU
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Carvalho, Rosa, primary, Vazquez, Dolores, additional, Silveira, Pedro, additional, and Lencastre, Luís, additional
- Published
- 2017
- Full Text
- View/download PDF
31. Erratum to: Abstracts from the 8th International Congress of the Asia Pacific Society of Infection Control (APSIC)
- Author
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Conceição, Teresa, primary, de Lencastre, Hermínia, additional, Aires-de-Sousa, Marta, additional, Marin, Rocio Alvarez, additional, de Sousa, Marta Aires, additional, Kieffer, Nicolas, additional, Nordmann, Patrice, additional, Poirel, Laurent, additional, Laochareonsuk, Wison, additional, Petyu, Sireekul, additional, Wanasitchaiwat, Pawin, additional, Thana, Sutasinee, additional, Bunyaphongphan, Chollathip, additional, Boonsomsuk, Woranan, additional, Maneepongpermpoon, Pakpoom, additional, Jamulitrat, Silom, additional, Chinniah, Terrence Rohan, additional, Prabu, Kavitha, additional, Ahmad, Rashidah, additional, Magon, Susylawathi, additional, DiniSuhaimi, Jauharatud, additional, Mirasin, Aizzuddin, additional, Morni, Nurul, additional, Chu, Boon, additional, Samsuddin, Azizah, additional, Ahmad, Aliyah, additional, Sidek, Amalina, additional, Ajis, Noraini, additional, AbuBakar, Amalina, additional, Shafiee, Amanie, additional, Safar, Julaini, additional, Chan, Ming-Chin, additional, Wang, Chih-Chien, additional, Boonkirdram, Nattawipa, additional, Picheansathian, Wilawan, additional, Klunklin, Pimpaporn, additional, Phan, Hang Thi, additional, Dinh, Anh Pham Phuong, additional, and Nguyen, Tuyet Thi Kim, additional
- Published
- 2017
- Full Text
- View/download PDF
32. Frequent occurrence of trimethoprim-sulfamethoxazole hetero-resistant Staphylococcus aureus isolates in different African countries
- Author
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Coelho, C., primary, de Lencastre, H., additional, and Aires-de-Sousa, M., additional
- Published
- 2017
- Full Text
- View/download PDF
33. Identification of LukPQ, a novel, equid-adapted leukocidin of Staphylococcus aureus
- Author
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Koop, Gerrit, primary, Vrieling, Manouk, additional, Storisteanu, Daniel M. L., additional, Lok, Laurence S. C., additional, Monie, Tom, additional, van Wigcheren, Glenn, additional, Raisen, Claire, additional, Ba, Xiaoliang, additional, Gleadall, Nicholas, additional, Hadjirin, Nazreen, additional, Timmerman, Arjen J., additional, Wagenaar, Jaap A., additional, Klunder, Heleen M., additional, Fitzgerald, J. Ross, additional, Zadoks, Ruth, additional, Paterson, Gavin K., additional, Torres, Carmen, additional, Waller, Andrew S., additional, Loeffler, Anette, additional, Loncaric, Igor, additional, Hoet, Armando E., additional, Bergström, Karin, additional, De Martino, Luisa, additional, Pomba, Constança, additional, de Lencastre, Hermínia, additional, Ben Slama, Karim, additional, Gharsa, Haythem, additional, Richardson, Emily J., additional, Chilvers, Edwin R., additional, de Haas, Carla, additional, van Kessel, Kok, additional, van Strijp, Jos A. G., additional, Harrison, Ewan M., additional, and Holmes, Mark A., additional
- Published
- 2017
- Full Text
- View/download PDF
34. Production of Nisin by Lactococcus lactis in Media with Skimmed Milk
- Author
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Thereza Christina Vessoni Penna, Angela Faustino Jozala, Letícia Celia de Lencastre Novaes, Olivia Cholewa, and Adalberto Pessoa
- Subjects
Sucrose ,food.ingredient ,Lactococcus lactis ,food and beverages ,Bioengineering ,General Medicine ,Biology ,biology.organism_classification ,Applied Microbiology and Biotechnology ,Biochemistry ,chemistry.chemical_compound ,food ,chemistry ,Bacteriocin ,Skimmed milk ,Agar ,Asparagine ,Food science ,Molecular Biology ,Nisin ,Bacteria ,Biotechnology - Abstract
Nisin is a bacteriocin that inhibits the germination and growth of Gram-positive bacteria. With nisin expression related to growth conditions of Lactococcus lactis subsp. lactis, the effects of growth parameters, media components, and incubation time were studied to optimize expression. L. lactis ATCC11454 was grown (100 rpm at 30°C for 36 h) in both M17 and MRS standard broth media (pH 6.0–7.0) supplemented with sucrose (1.0–12.5 g/L), potassium phosphate (0.13 g/L), asparagine (0.5 g/L), and sucrose (0.24 g/L), and diluted 1:1 with liquid nonfat milk. Liquid nonfat milk, undiluted, was also used as another medium (9% total solids, pH 6.5). Nisin production was assayed by agar diffusion using Lactobacillus sake ATCC 15521 (30°C for 24 h) as the sensitive test organism. The titers of nisin expressed and released in culture media were quantified and expressed in arbitrary units (AU/L of medium) and converted into known concentrations of “standard nisin” (NisaplinsR, g/L). The detection of nisin activity was
- Published
- 2005
35. Variable recombination dynamics during the emergence, transmission and ‘disarming’ of a multidrug-resistant pneumococcal clone
- Author
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Bernard Beall, Jae-Hoon Song, William P. Hanage, Keith P. Klugman, Nicholas J. Croucher, Stephen D. Bentley, Herminia Garcez Lencastre, Simon R. Harris, Karl G. Kristinsson, Julian Parkhill, Kwan Soo Ko, Mark van der Linden, Alexander Tomasz, Lesley McGee, and Raquel Sá-Leão
- Subjects
Time Factors ,Antibiotic resistance ,Physiology ,Iceland ,Chloramphenicol Resistance ,Microbial Sensitivity Tests ,Plant Science ,Biology ,medicine.disease_cause ,General Biochemistry, Genetics and Molecular Biology ,Disease Outbreaks ,Coalescent theory ,Bacterial evolution ,Structural Biology ,Phylogenetics ,Drug Resistance, Multiple, Bacterial ,Streptococcal Infections ,Streptococcus pneumoniae ,medicine ,Humans ,Gene ,Phylogeny ,Ecology, Evolution, Behavior and Systematics ,Prophage ,Recombination, Genetic ,Genetics ,Likelihood Functions ,Base Sequence ,Agricultural and Biological Sciences(all) ,Biochemistry, Genetics and Molecular Biology(all) ,Cell Biology ,Recombination ,Clone Cells ,3. Good health ,Multiple drug resistance ,Phylogeography ,Mobile genetic elements ,Coalescent analysis ,General Agricultural and Biological Sciences ,Research Article ,Developmental Biology ,Biotechnology - Abstract
Background: Pneumococcal β-lactam resistance was first detected in Iceland in the late 1980s, and subsequently peaked at almost 25% of clinical isolates in the mid-1990s largely due to the spread of the internationally-disseminated multidrug-resistant PMEN2 (or Spain 6B -2) clone of Streptococcus pneumoniae. Results: Whole genome sequencing of an international collection of 189 isolates estimated that PMEN2 emerged around the late 1960s, developing resistance through multiple homologous recombinations and the acquisition of a Tn5253-type integrative and conjugative element (ICE). Two distinct clades entered Iceland in the 1980s, one of which had acquired a macrolide resistance cassette and was estimated to have risen sharply in its prevalence by coalescent analysis. Transmission within the island appeared to mainly emanate from Reykjavik and the Southern Peninsular, with evolution of the bacteria effectively clonal, mainly due to a prophage disrupting a gene necessary for genetic transformation in many isolates. A subsequent decline in PMEN2’s prevalence in Iceland coincided with a nationwide campaign that reduced dispensing of antibiotics to children in an attempt to limit its spread. Specific mutations causing inactivation or loss of ICE-borne resistance genes were identified from the genome sequences of isolates that reverted to drug susceptible phenotypes around this time. Phylogenetic analysis revealed some of these occurred on multiple occasions in parallel, suggesting they may have been at least temporarily advantageous. However, alteration of ‘core’ sequences associated with resistance was precluded by the absence of any substantial homologous recombination events. Conclusions: PMEN2’s clonal evolution was successful over the short-term in a limited geographical region, but its inability to alter major antigens or ‘core’ gene sequences associated with resistance may have prevented persistence over longer timespans.
- Published
- 2014
36. A tertiary interaction that links active-site domains to the 5′ splice site of a group II intron
- Author
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Anna Marie Pyle, Marc Boudvillain, and Alexandre de Lencastre
- Subjects
Genetics ,Spliceosome ,Multidisciplinary ,biology ,Chemistry ,Ribozyme ,Intron ,RNA ,Group II intron ,Introns ,Protein tertiary structure ,Catalytic Domain ,Mutation ,RNA splicing ,biology.protein ,Nucleic Acid Conformation ,RNA, Catalytic ,Group I catalytic intron ,Base Pairing ,Conserved Sequence ,Plasmids - Abstract
Group II introns are self-splicing RNAs that are commonly found in the genes of plants, fungi, yeast and bacteria. Little is known about the tertiary structure of group II introns, which are among the largest natural ribozymes. The most conserved region of the intron is domain 5 (D5), which, together with domain 1 (D1), is required for all reactions catalysed by the intron. Despite the importance of D5, its spatial relationship and tertiary contacts to other active-site constituents have remained obscure. Furthermore, D5 has never been placed directly at a site of catalysis by the intron. Here we show that a set of tertiary interactions (lambda-lambda') links catalytically essential regions of D5 and D1, creating the framework for an active-site and anchoring it at the 5' splice site. Highly conserved elements similar to components of the lambda-lambda' interaction are found in the eukaryotic spliceosome.
- Published
- 2000
37. Natural colorants from filamentous fungi
- Author
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Torres, Fábio Aurélio Esteves, primary, Zaccarim, Bruna Regina, additional, de Lencastre Novaes, Letícia Celia, additional, Jozala, Angela Faustino, additional, Santos, Carolina Alves dos, additional, Teixeira, Maria Francisca Simas, additional, and Santos-Ebinuma, Valéria Carvalho, additional
- Published
- 2016
- Full Text
- View/download PDF
38. Bacterial nanocellulose production and application: a 10-year overview
- Author
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Jozala, Angela Faustino, primary, de Lencastre-Novaes, Leticia Celia, additional, Lopes, André Moreni, additional, de Carvalho Santos-Ebinuma, Valéria, additional, Mazzola, Priscila Gava, additional, Pessoa-Jr, Adalberto, additional, Grotto, Denise, additional, Gerenutti, Marli, additional, and Chaud, Marco Vinicius, additional
- Published
- 2016
- Full Text
- View/download PDF
39. A statistical approach to quantitative data validation focused on the assessment of students’ perceptions about biotechnology
- Author
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Patrício Costa, Leonor Lencastre, Fernando Tavares, Maria João Fonseca, Faculdade de Psicologia e de Ciências da Educação, Faculdade de Ciências, and Universidade do Minho
- Subjects
Psychometrics ,Computer science ,Elementary and high school ,Data validation ,Validity ,Context (language use) ,0504 sociology ,Multidisciplinary approach ,Psychometric analysis ,Reliability (statistics) ,Exploratory factor analysis ,Biotechnology education ,Science & Technology ,Multidisciplinary ,business.industry ,Research ,4. Education ,05 social sciences ,050401 social sciences methods ,050301 education ,Reliability ,Questionnaire validation ,Biotechnology ,Scientific literacy ,business ,0503 education - Abstract
Student awareness levels are frequently used to evaluate the effectiveness of educational policies to promote scientific literacy. Over the last years several studies have been developed to assess students' perceptions towards science and technology, which usually rely on quantitative methods to achieve broad characterizations, and obtain quantifiable and comparable data. Although the usefulness of this information depends on its validity and reliability, validation is frequently neglected by researchers with limited background in statistics. In this context, we propose a guideline to implement a statistical approach to questionnaire validation, combining exploratory factor analysis and reliability analysis. The work focuses on the psychometric analysis of data provided by a questionnaire assessing 1196 elementary and high school students' perceptions about biotechnology. Procedural guidelines to enhance the efficiency of quantitative inquiry surveys are given, by discussing essential methodological aspects and relevant criteria to integrate theory into practice., The authors are grateful to all the participant teachers and students that contributed to gather the data presented and to Catarina L. Santos for useful comments and suggestions on the manuscript. Maria Joao Fonseca was supported by the FCT fellowship SFRH/BD/37389/2007 and this work was sponsored by a research grant (PTDC/AGR-PRO/111857/2009) from Fundacao para a Ciencia e Tecnologia (FCT, Portugal).
- Published
- 2013
40. Genetic control of population structure in heterogeneous strains of methicillin resistantStaphylococcus aureus
- Author
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A Tomasz, Agnes Marie Sá Figueiredo, and H. de Lencastre
- Subjects
Microbiology (medical) ,Staphylococcus aureus ,medicine.medical_specialty ,Genotype ,medicine.drug_class ,Antibiotics ,General Medicine ,Biology ,medicine.disease_cause ,biology.organism_classification ,Methicillin-resistant Staphylococcus aureus ,Electrophoresis, Gel, Pulsed-Field ,Microbiology ,Phenotype ,Infectious Diseases ,Medical microbiology ,Antibiotic resistance ,Species Specificity ,Cell culture ,medicine ,Methicillin Resistance ,Genetic variability ,Serial Passage ,Bacteria - Abstract
Cultures of heterogeneous strains of methicillin resistant Staphylococcus aureus are composed of several subpopulations of cells that differ in their level of antibiotic resistance and frequencies. Experimental evidence is presented indicating that the number of these subpopulations, their resistance level and the frequency with which they are represented in a culture are strain-specific and reproducible with a surprising degree of precision from one culture to another. This implies a genetic control of population structure in these bacteria.
- Published
- 1993
41. Cloning of the thymidylate synthetase gene (thyPIG 3) from theBacillus subtilis temperate phage IG 3
- Author
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Ilda Santos and Hermínia de Lencastre
- Subjects
Viral Structural Proteins ,Genetics ,Genes, Viral ,biology ,Genetic Complementation Test ,Restriction Mapping ,Bacillus Phages ,Thymidylate Synthase ,General Medicine ,Bacillus subtilis ,Molecular cloning ,biology.organism_classification ,Virology ,Molecular biology ,Complementation ,Bacteriophage ,Temperateness ,Plasmid ,Restriction map ,Escherichia coli ,Cloning, Molecular ,Gene - Abstract
The thyPIG 3 gene from Bacillus subtilis bacteriophage IG 3 was cloned in the plasmid pHV 33. Two recombinant plasmids, pISL 61 and pISL 62 carrying that gene are effective in transforming to thymine prototrophy both Escherichia coli (by complementation) and B. subtilis (by complementation and recombination). The comparison of cloned fragment containing the thyPIG 3 gene and the thyP 3 gene from phage phi 3 T, by restriction analysis and DNA hybridization, suggests a strong homology between the two. The thyPIG 3 gene was mapped in this study in the central region of the IG 3 genome.
- Published
- 1992
42. Action of 6-(p-hydroxyphenylazo)-uracil on bacteriophage IG 1
- Author
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L J Archer, R M Fernandes, and H. de Lencastre
- Subjects
DNA polymerase ,viruses ,Bacillus subtilis ,Virus Replication ,Bacteriophage ,chemistry.chemical_compound ,Lysogen ,Hydroxyphenylazouracil ,Virology ,medicine ,Bacteriophages ,Viability assay ,biology ,Chloramphenicol ,Uracil ,General Medicine ,biology.organism_classification ,Molecular biology ,Temperateness ,chemistry ,biology.protein ,Virus Activation ,medicine.drug - Abstract
IG 1, a temperate phage of Bacillus subtilis, is strongly induced from its lysogens by 6-(p-hydroxyphenylazo)-uracil, an azopyrimidine known as selectively inhibiting the B. subtilis DNA polymerase III. IG 1 phages originated either by induction or infection multiply, abundantly, in the presence of that azopyrimidine, in spite of the drastic decline of cell viability. Chloramphenicol completely suppresses the induction effect and also blocks the formation of spontaneously induced phage particles.
- Published
- 1990
43. Prevalence, risk factors, and epidemiology of methicillin-resistantStaphylococcus aureus carried by adults over 60 years of age
- Author
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Almeida, S. T., primary, Nunes, S., additional, Paulo, A. C. S., additional, Faria, N. A., additional, de Lencastre, H., additional, and Sá-Leão, R., additional
- Published
- 2014
- Full Text
- View/download PDF
44. Non-typeable pneumococci circulating in Portugal are of cps type NCC2 and have genomic features typical of encapsulated isolates
- Author
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Tavares, Débora A, primary, Simões, Alexandra S, additional, Bootsma, Hester J, additional, Hermans, Peter WM, additional, de Lencastre, Hermínia, additional, and Sá-Leão, Raquel, additional
- Published
- 2014
- Full Text
- View/download PDF
45. Variable recombination dynamics during the emergence, transmission and ‘disarming’ of a multidrug-resistant pneumococcal clone
- Author
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Croucher, Nicholas J, primary, Hanage, William P, additional, Harris, Simon R, additional, McGee, Lesley, additional, van der Linden, Mark, additional, de Lencastre, Herminia, additional, Sá-Leão, Raquel, additional, Song, Jae-Hoon, additional, Ko, Kwan Soo, additional, Beall, Bernard, additional, Klugman, Keith P, additional, Parkhill, Julian, additional, Tomasz, Alexander, additional, Kristinsson, Karl G, additional, and Bentley, Stephen D, additional
- Published
- 2014
- Full Text
- View/download PDF
46. EURISWEB – Web-based epidemiological surveillance of antibiotic-resistant pneumococci in Day Care Centers
- Author
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João A. Carriço, Jonas S. Almeida, António Brito-Avô, Sara Silva, Ilda Santos Sanches, Thorolfur Gudnason, Rodrigo Gouveia-Oliveira, Karl Ekdahl, Hermínia de Lencastre, António Maretzek, Alexander Tomasz, and Karl G. Kristinsson
- Subjects
Health Informatics ,lcsh:Computer applications to medicine. Medical informatics ,Health informatics ,Pneumococcal Infections ,Decision Support Techniques ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Data retrieval ,law ,Humans ,Medicine ,Web application ,030212 general & internal medicine ,Child ,Internet ,0303 health sciences ,Data collection ,030306 microbiology ,business.industry ,Data Collection ,Health Policy ,Online database ,Drug Resistance, Microbial ,Child Day Care Centers ,Data science ,3. Good health ,Computer Science Applications ,Europe ,Streptococcus pneumoniae ,Databases as Topic ,Software agent ,Population Surveillance ,lcsh:R858-859.7 ,The Internet ,Hypertext ,business ,Medical Informatics ,Research Article - Abstract
Background EURIS (European Resistance Intervention Study) was launched as a multinational study in September of 2000 to identify the multitude of complex risk factors that contribute to the high carriage rate of drug resistant Streptococcus pneumoniae strains in children attending Day Care Centers in several European countries. Access to the very large number of data required the development of a web-based infrastructure – EURISWEB – that includes a relational online database, coupled with a query system for data retrieval, and allows integrative storage of demographic, clinical and molecular biology data generated in EURIS. Methods All components of the system were developed using open source programming tools: data storage management was supported by PostgreSQL, and the hypertext preprocessor to generate the web pages was implemented using PHP. The query system is based on a software agent running in the background specifically developed for EURIS. Results The website currently contains data related to 13,500 nasopharyngeal samples and over one million measures taken from 5,250 individual children, as well as over one thousand pre-made and user-made queries aggregated into several reports, approximately. It is presently in use by participating researchers from three countries (Iceland, Portugal and Sweden). Conclusion An operational model centered on a PHP engine builds the interface between the user and the database automatically, allowing an easy maintenance of the system. The query system is also sufficiently adaptable to allow the integration of several advanced data analysis procedures far more demanding than simple queries, eventually including artificial intelligence predictive models.
- Published
- 2003
47. A statistical approach to quantitative data validation focused on the assessment of students’ perceptions about biotechnology
- Author
-
Fonseca, Maria João, primary, Costa, Patrício, additional, Lencastre, Leonor, additional, and Tavares, Fernando, additional
- Published
- 2013
- Full Text
- View/download PDF
48. Population structure of methicillin-susceptible Staphylococcus aureus (MSSA) in Portugal over a 19-year period (1992–2011)
- Author
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Tavares, A., primary, Faria, N. A., additional, Lencastre, H., additional, and Miragaia, M., additional
- Published
- 2013
- Full Text
- View/download PDF
49. LPS–protein aggregation influences protein partitioning in aqueous two-phase micellar systems
- Author
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Lopes, André Moreni, primary, Santos-Ebinuma, Valéria de Carvalho, additional, Novaes, Leticia Celia de Lencastre, additional, Molino, João Vitor Dutra, additional, Barbosa, Leandro Ramos Souza, additional, Pessoa, Adalberto, additional, and Rangel-Yagui, Carlota de Oliveira, additional
- Published
- 2013
- Full Text
- View/download PDF
50. Aqueous Two-Phase Micellar System for Nisin Extraction in the Presence of Electrolytes
- Author
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Jozala, Angela Faustino, primary, Lopes, André Moreni, additional, de Lencastre Novaes, Letícia Celia, additional, Mazzola, Priscila Gava, additional, Penna, Thereza Christina Vessoni, additional, and Júnior, Adalberto Pessoa, additional
- Published
- 2012
- Full Text
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