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Araújo D, Castro J, Matos F, Oliveira R, Ramos C, Almeida C, Silva S. Exploring the prevalence and antibiotic resistance profile of Klebsiella pneumoniae and Klebsiella oxytoca isolated from clinically ill companion animals from North of Portugal. Res Vet Sci 2023; 159:183-188. [PMID: 37148737 DOI: 10.1016/j.rvsc.2023.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 04/11/2023] [Accepted: 04/13/2023] [Indexed: 05/08/2023]
Abstract
Klebsiella spp. is an important pathogen in humans and animals and due to the indiscriminate use of antibiotics, its prevalence and antibiotic resistance has increased in companion animals. The main goal of this study was to investigate the prevalence and antibiotic resistance of Klebsiella spp. isolated from clinically ill cats and dogs admitted in veterinary clinics in the North of Portugal. A total of 255 clinical specimens were collected and, after isolation, the identification of Klebsiella strains was performed using the BBL Crystal™ identification system and confirmed by PCR-based sequencing with specific primers. Antibiotic resistance profile was determined through the disc diffusion method. Beta-lactam resistance genes were screened through a multiplex PCR assay. Fifty Klebsiella strains were isolated and, 39 were identified as Klebsiella pneumoniae and 11 as Klebsiella oxytoca. Thirty-one were recovered from dogs and 19 from cats. The Klebsiella isolates were recovered mainly from skin wounds, respiratory tract, and from urine. Fifty percent of K. oxytoca and K. pneumoniae isolates revealed to be Multidrug Resistant (MDR) strains, with most of them positive for the presence of blaTEM-like and blaSHV genes. This data shows that MDR Klebsiella are highly disseminated in companion animals and that extended-spectrum beta-lactamases can be easily found among these isolates. This highlights the potential role of dogs and cats as a reservoir of resistant Klebsiella spp. that have the potential to be transmitted to humans.
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Affiliation(s)
- D Araújo
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairão, Portugal
| | - J Castro
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairão, Portugal; Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal
| | - F Matos
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairão, Portugal
| | - R Oliveira
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairão, Portugal; LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - C Ramos
- Clínica Veterinária das Glicínias - Vets On The Road, Rua Dr. Edgardo Sá Malheiro 175, 4705-267 Braga, Portugal
| | - C Almeida
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairão, Portugal; Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal; ALiCE - Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
| | - S Silva
- INIAV, IP - National Institute for Agrarian and Veterinary Research, Rua dos Lagidos, Lugar da Madalena, 4485-655 Vairão, Portugal; Centre of Biological Engineering, University of Minho, 4710-057 Braga, Portugal.
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Araújo D, Gonçalves B, Vilas Boas D, Rodrigues ME, Henriques M, Silva S. Combined Application of Antisense Oligomers to Control Transcription Factors of Candida albicans Biofilm Formation. Mycopathologia 2023:10.1007/s11046-023-00734-0. [PMID: 37099227 DOI: 10.1007/s11046-023-00734-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Accepted: 03/29/2023] [Indexed: 04/27/2023]
Abstract
Antisense oligomers (ASOs) have been little exploited to control determinants of Candida albicans virulence. Biofilm formation is an important virulence factor of C. albicans, that is regulated by a complex network of transcription factors (such as EFG1, BRG1 and ROB1). Thus, the main goal of this work was to project ASOs, based on the 2'-OMethyl chemical modification, to target BRG1 and ROB1 mRNA and to validate its application either alone or in combination with the EFG1 mRNA target, to reduce C. albicans biofilm formation. The ability of ASOs to control gene expression was evaluate by qRT-PCR. The effect on biofilm formation was determined by the total biomass quantification, and simultaneously the carbohydrates and proteins reduction on extracellular matrix. It was verified that all the oligomers were able to reduce the levels of gene expression and the ability of C. albicans to form biofilms. Furthermore, the combined application of the cocktail of ASOs enhances the inhibition of C. albicans biofilm formation, minimizing biofilm thickness by reducing the quantity of matrix content (protein and carbohydrate). So, our work confirms that ASOs are useful tools for research and therapeutic development on the control of Candida species biofilm formation.
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Affiliation(s)
- D Araújo
- Centre of Biological Engineering, LMaS-Laboratório de Microbiologia Aplicada à Saúde, CEB-Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal.
- LABBELS, Associate Laboratory, Braga/Guimarães, Portugal.
| | - B Gonçalves
- Centre of Biological Engineering, LMaS-Laboratório de Microbiologia Aplicada à Saúde, CEB-Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal
- LABBELS, Associate Laboratory, Braga/Guimarães, Portugal
| | - D Vilas Boas
- Centre of Biological Engineering, LMaS-Laboratório de Microbiologia Aplicada à Saúde, CEB-Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal
- LABBELS, Associate Laboratory, Braga/Guimarães, Portugal
| | - M E Rodrigues
- Centre of Biological Engineering, LMaS-Laboratório de Microbiologia Aplicada à Saúde, CEB-Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal
- LABBELS, Associate Laboratory, Braga/Guimarães, Portugal
| | - M Henriques
- Centre of Biological Engineering, LMaS-Laboratório de Microbiologia Aplicada à Saúde, CEB-Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal
- LABBELS, Associate Laboratory, Braga/Guimarães, Portugal
| | - S Silva
- Centre of Biological Engineering, LMaS-Laboratório de Microbiologia Aplicada à Saúde, CEB-Centre of Biological Engineering, University of Minho, 4710-057, Braga, Portugal
- INIAV, IP-National Institute for Agrarian and Veterinary, Rua Dos Lagidos, Lugar da Madalena, Vairão, Vila Do Conde, Portugal
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Querido A, Costa MJ, Araújo D, Sampaio AR, Vilas-Boas JP, Corredeira R, Daly DJ, Fernandes RJ. Swimmers with Down Syndrome Are Healthier and Physically Fit than Their Untrained Peers. Healthcare (Basel) 2023; 11:healthcare11040482. [PMID: 36833016 PMCID: PMC9956035 DOI: 10.3390/healthcare11040482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 02/03/2023] [Accepted: 02/04/2023] [Indexed: 02/11/2023] Open
Abstract
While there are positive benefits from physical activity participation for individuals with Down syndrome, little is known about the effects of swimming training. The aim of this study was to compare the body composition and physical fitness profile of competitive swimmers and moderately active (untrained) individuals with Down syndrome. The Eurofit Special test was applied to a group of competitive swimmers (n = 18) and a group of untrained individuals (n = 19), all with Down syndrome. In addition, measurements were taken to determine body composition characteristics. The results showed differences between swimmers and untrained subjects in height, sum of the four skinfolds, body fat %, fat mass index and all items of the Eurofit Special test. Swimmers with Down syndrome exhibited physical fitness levels near to the Eurofit standards, although lower fitness levels were attained by these persons when compared to athletes with intellectual disability. It can be concluded that the practice of competitive swimming seems to counteract the tendency for obesity in persons with Down syndrome and also helps to increase strength, speed and balance.
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Affiliation(s)
- Ana Querido
- N2i, Polytechnic Institute of Maia, 4475-690 Maia, Portugal
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Correspondence:
| | - Mário J. Costa
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - Dália Araújo
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - António R. Sampaio
- N2i, Polytechnic Institute of Maia, 4475-690 Maia, Portugal
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - João P. Vilas-Boas
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - Rui Corredeira
- Research Centre in Physical Activity, Health and Leisure, CIAFEL, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
| | - Daniel J. Daly
- Faculty of Movement and Rehabilitation Sciences, Katholiek Universiteit Leuven, 3001 Leuven, Belgium
| | - Ricardo J. Fernandes
- Centre of Research, Education, Innovation and Intervention in Sport, CIFI2D, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
- Porto Biomechanics Laboratory, LABIOMEP-UP, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal
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Coelho DB, Santos AR, Rodrigues ME, Fernandes AC, Paquete J, Araújo D. A potentially life-threatening complication of lung metastasis thermal-ablation. Pulmonology 2023; 29:92-93. [PMID: 35864054 DOI: 10.1016/j.pulmoe.2022.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 01/28/2023] Open
Affiliation(s)
- D B Coelho
- Pulmonology Department, Centro Hospitalar Universitario de Sao Joao, Porto, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal.
| | - A R Santos
- Pulmonology Department, Centro Hospitalar Universitario de Sao Joao, Porto, Portugal
| | - M E Rodrigues
- Endocrinology Department, Centro Hospitalar Universitario de Sao Joao, Porto, Portugal
| | - A C Fernandes
- Oncology Department, Centro Hospitalar Universitario de Sao Joao, Porto, Portugal
| | - J Paquete
- Radiology Department, Centro Hospitalar Universitario de Sao Joao, Porto, Portugal
| | - D Araújo
- Pulmonology Department, Centro Hospitalar Universitario de Sao Joao, Porto, Portugal
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Serino M, Freitas C, Martins M, Ferreira P, Cardoso C, Veiga F, Santos V, Araújo D, Novais-Bastos H, Magalhães A, Queiroga H, Fernandes G, Hespanhol V. Predictors of immune-related adverse events and outcomes in patients with NSCLC treated with immune-checkpoint inhibitors. Pulmonology 2022:S2531-0437(22)00076-9. [PMID: 35414494 DOI: 10.1016/j.pulmoe.2022.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 03/14/2022] [Accepted: 03/14/2022] [Indexed: 10/18/2022] Open
Abstract
OBJECTIVE To identify predictors of immune-related adverse events (IRAEs) in patients with non-small cell lung cancer (NSCLC) treated with immune checkpoint inhibitors (ICIs). Assess associations between outcomes and the development of IRAEs. METHODS Retrospective analysis of patients with NSCLC treated with ICIs between 2016 and 2020 in the Pulmonology Department of our hospital. Patients with and without IRAEs were compared. A logistic regression analysis was performed to determine predictors of IRAEs. Progression-free survival (PFS) and overall survival (OS) curves were calculated using the Kaplan-Meier method, and the long-rank test was used to assess survival differences between groups. Univariate and multivariate Cox proportional-hazards regression models were used to identify factors associated with PFS and OS. The value considered statistically significant was p≤0.05. RESULTS A total of 184 patients (77.7% men, mean age 66.9±9.5 years) treated with ICIs were analyzed. During follow-up, 49 (26.6%) patients developed IRAEs and 149 (81.0%) died. According to the multivariate logistic regression analysis, treatment with statins (OR:3.15; p = 0.007), previous systemic corticosteroid therapy (OR:3.99; p = 0.001), disease controlled as response to ICI (OR:5.93; p < 0.001) and higher hemoglobin values (OR:1.28; p = 0.040) were independent predictors for the development of IRAEs. Patients who developed IRAEs had significantly longer medians of PFS (41.0 vs 9.0 weeks, p < 0.001) and OS (89.0 vs 28.0 weeks; p < 0.001). CONCLUSIONS Patients treated with statins, pre-ICI systemic corticosteroids, higher baseline hemoglobin value and controlled disease as initial response to ICI had a higher risk of developing IRAEs. The development of IRAEs was associated with better outcomes.
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Affiliation(s)
- M Serino
- Pulmonology Department, Centro Hospitalar Universitário São João, Porto, Portugal.
| | - C Freitas
- Pulmonology Department, Centro Hospitalar Universitário São João; Faculty of Medicine, University of Porto, Porto, Portugal
| | - M Martins
- Pulmonology Department, Centro Hospitalar Universitário São João, Porto, Portugal
| | - P Ferreira
- Pulmonology Department, Centro Hospitalar Universitário São João, Porto, Portugal
| | - C Cardoso
- Pulmonology Department, Centro Hospitalar Universitário São João, Porto, Portugal
| | - F Veiga
- Faculty of Medicine, University of Porto, Porto, Portugal
| | - V Santos
- Pulmonology Department, Centro Hospitalar Universitário São João, Porto, Portugal
| | - D Araújo
- Pulmonology Department, Centro Hospitalar Universitário São João, Porto, Portugal
| | - H Novais-Bastos
- Pulmonology Department, Centro Hospitalar Universitário São João; Faculty of Medicine, University of Porto, Porto, Portugal
| | - A Magalhães
- Pulmonology Department, Centro Hospitalar Universitário São João, Porto, Portugal
| | - H Queiroga
- Pulmonology Department, Centro Hospitalar Universitário São João; Faculty of Medicine, University of Porto, Porto, Portugal
| | - G Fernandes
- Pulmonology Department, Centro Hospitalar Universitário São João; Faculty of Medicine, University of Porto, Porto, Portugal
| | - V Hespanhol
- Pulmonology Department, Centro Hospitalar Universitário São João; Faculty of Medicine, University of Porto, Porto, Portugal
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Gromicho A, Bou Kheir G, Araújo D, Rodrigues R, Pereira D, Dias J, Ferraz L. Long-term efficacy and safety of Altis® single-incision sling procedure for stress urinary incontinence. Eur Urol 2021. [DOI: 10.1016/s0302-2838(21)00489-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Saito AO, Araújo D, Filho CS, Sá D, Walter L, Silva A, Berra C, Germano J, Pinto C, Carraro D, De Lima V. P33.19 Association Between Expression of Immune Response-Related Genes and Response to Nivolumab in Metastatic Non-Small Cell Lung Cancer. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Freitas C, Veiga F, Costa J, Araújo D, Novais-Bastos H, Santos V, Magalhães A, Hespanhol V, Queiroga H, Fernandes G. P01.15 Immune-Related Adverse Effects of Immunotherapy in Patients With Advanced Non-Small Cell Lung Carcinoma. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Carvalho V, Esteves P, Nunes C, Araújo D, Helsen W, Travassos B. Observe and make a call: football referee’s assessment is context sensitive. INT J PERF ANAL SPOR 2020. [DOI: 10.1080/24748668.2020.1820194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- V. Carvalho
- Department of Sport Sciences, Universidade Da Beira Interior, Covilhã, Portugal
| | - P.T. Esteves
- Polytechnic Institute of Guarda, Portugal
- CreativeLab, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, Portugal
| | - C. Nunes
- Department of Mathematics and Center of Mathematics and Applications, Universidade Da Beira Interior, Covilhã, Portugal
| | - D. Araújo
- CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Portugal
| | - W.F. Helsen
- KU Leuven, Department of Movement Sciences, Research Group for Movement Control and Neuroplasticity, Leuven, Belgium
| | - B. Travassos
- Department of Sport Sciences, Universidade Da Beira Interior, Covilhã, Portugal
- CreativeLab, Research Center in Sports Sciences, Health Sciences and Human Development, CIDESD, Portugal
- Portugal Football School, Portuguese Football Federation, FPF, Oeiras, Portugal
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Jacob M, Romano J, Araújo D, Pereira JM, Ramos I, Hespanhol V. Predicting lung nodules malignancy. Pulmonology 2020; 28:454-460. [PMID: 32739327 DOI: 10.1016/j.pulmoe.2020.06.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/26/2020] [Accepted: 06/29/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND It is critical to developing an accurate method for differentiating between malignant and benign solitary pulmonary nodules. This study aimed was to establish a predicting model of lung nodules malignancy in a real-world setting. METHODS The authors retrospectively analysed the clinical and computed tomography (CT) data of 121 patients with lung nodules, submitted to percutaneous CT-guided transthoracic biopsy, between 2014 and 2015. Multiple logistic regression was used to screen independent predictors for malignancy and to establish a clinical prediction model to evaluate the probability of malignancy. RESULTS From a total of 121 patients, 75 (62%) were men and with a mean age of 64.7 years old. Multivariate logistic regression analysis identified six independent predictors of malignancy: age, gender, smoking status, current extra-pulmonary cancer, air bronchogram and nodule size (p<0.05). The area under the curve (AUC) was 0.8573. CONCLUSIONS The prediction model established in this study can be used to assess the probability of malignancy in the Portuguese population, thereby providing help for the diagnosis of lung nodules and the selection of follow-up interventions.
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Affiliation(s)
- M Jacob
- Pulmonology Department, Centro Hospitalar Universitário de São João, Porto, Portugal.
| | - J Romano
- Physical Medicine and Rehabilitation Department, Unidade de Saúde Local de Matosinhos, Porto, Portugal
| | - D Araújo
- Pulmonology Department, Centro Hospitalar Universitário de São João, Porto, Portugal
| | - J M Pereira
- Radiology Department, Centro Hospitalar Universitário de São João, Porto, Portugal; Faculty of Medicine of Porto University, Porto, Portugal
| | - I Ramos
- Radiology Department, Centro Hospitalar Universitário de São João, Porto, Portugal; Faculty of Medicine of Porto University, Porto, Portugal
| | - V Hespanhol
- Pulmonology Department, Centro Hospitalar Universitário de São João, Porto, Portugal; Faculty of Medicine of Porto University, Porto, Portugal
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Figueiredo A, Almeida M, Almodovar M, Alves P, Araújo A, Araújo D, Barata F, Barradas L, Barroso A, Brito U, Camacho E, Canário D, Cardoso T, Chaves A, Costa L, Cunha J, Duarte J, Estevinho F, Felizardo M, Fernandes J, Ferreira L, Ferreira L, Fidalgo P, Freitas C, Garrido P, Gil N, Hasmucrai D, Jesus E, Lopes J, de Macedo J, Meleiro A, Neveda R, Nogueira F, Pantorotto M, Parente B, Pego A, Rocha M, Roque J, Santos C, Saraiva J, Silva E, Silva S, Simões S, Soares M, Teixeira E, Timóteo T, Hespanhol V. Real-world data from the Portuguese Nivolumab Expanded Access Program (EAP) in previously treated Non Small Cell Lung Cancer (NSCLC). Pulmonology 2020; 26:10-17. [DOI: 10.1016/j.pulmoe.2019.06.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/27/2019] [Accepted: 06/10/2019] [Indexed: 11/30/2022] Open
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Freitas C, Tavares N, Jacob M, Mendonça D, Oliveira P, Araújo D, Novais-Bastos H, Fernandes G, Magalhães A, Queiroga H, Hespanhol V. P1.04-59 Modified Glasgow Prognostic Score Predict Survival Among Non-Small Cell Lung Cancer Patients Treated with Immune Checkpoint Inhibitors. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Meira L, Chaves C, Araújo D, Almeida L, Boaventura R, Ramos A, Carvalho T, Osório NS, Castro AG, Rodrigues F, Guimarães JT, Saraiva M, Bastos HN. Predictors and outcomes of disseminated tuberculosis in an intermediate burden setting. Pulmonology 2019; 25:320-327. [PMID: 30819659 DOI: 10.1016/j.pulmoe.2018.11.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2018] [Revised: 10/28/2018] [Accepted: 11/16/2018] [Indexed: 12/18/2022] Open
Abstract
SETTING University-affiliated hospital located in Porto, North Portugal, an area with a low to intermediate incidence of tuberculosis (TB). OBJECTIVE To identify predictors and outcomes of disseminated TB (dTB). DESIGN A cohort of patients diagnosed with TB between 2007 and 2013 was retrospectively analysed. Patients with dTB criteria were characterized and compared to single organ TB cases. Factors independently associated with dTB were determined by multivariate logistic regression analysis. RESULTS A total of 744 patients were analysed, including 145 with dTB. Independent risk factors for dTB were pharmacological immunosuppression (OR 5.6, 95% CI 2.8-11.3), HIV infection (OR 5.1, 95% CI 3.1-8.3), chronic liver failure or cirrhosis (OR 2.3, 95% CI 1.4-4.1) and duration of symptoms (OR 2.3, 95% CI 1.4-3.8). Compared to single organ TB, the clinical presentation of dTB patients differed by the absence of haemoptysis (OR 3.2, 95% CI 1.3-8.4) and of dyspnoea (OR 1.9, 95% CI 1.2-3.1), presence of weight loss (OR 1.8, 95% CI 1.1-2.9), night sweats (OR 1.7, 95% CI 1.1-2.7) and bilateral lung involvement (OR 4.4, 95% CI 2.8-7.1). Mortality and time until culture conversion were higher for dTB patients, although not reaching statistical significance. CONCLUSION Immunosuppressive conditions and chronic liver failure or cirrhosis were associated with increased risk of dTB. The haematogenous spread may be dependent on longer symptomatic disease and usually progresses with bilateral lung involvement.
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Affiliation(s)
- L Meira
- Department of Pneumology, Centro Hospitalar São João, Porto, Portugal
| | - C Chaves
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - D Araújo
- Department of Pneumology, Centro Hospitalar São João, Porto, Portugal
| | - L Almeida
- Department of Pneumology, Centro Hospitalar São João, Porto, Portugal
| | - R Boaventura
- Department of Pneumology, Centro Hospitalar São João, Porto, Portugal
| | - A Ramos
- Department of Clinical Pathology, Centro Hospitalar São João, Porto, Portugal; Institute of Public Health, University of Porto, Porto, Portugal
| | - T Carvalho
- Department of Clinical Pathology, Centro Hospitalar São João, Porto, Portugal; Institute of Public Health, University of Porto, Porto, Portugal
| | - N S Osório
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - A G Castro
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - F Rodrigues
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho, Braga, Portugal; ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J T Guimarães
- Department of Clinical Pathology, Centro Hospitalar São João, Porto, Portugal; Institute of Public Health, University of Porto, Porto, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal
| | - M Saraiva
- i3S - Instituto de Investigação e Inovação em Saúde, University of Porto, Portugal; IBMC - Instituto de Biologia Molecular e Celular, University of Porto, Porto, Portugal
| | - H N Bastos
- Department of Pneumology, Centro Hospitalar São João, Porto, Portugal; Faculty of Medicine, University of Porto, Porto, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, University of Porto, Portugal; IBMC - Instituto de Biologia Molecular e Celular, University of Porto, Porto, Portugal.
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Padrão E, Araújo D, Todo Bom A, Robalo Cordeiro C, Correia de Sousa J, Cardoso J, Morais-Almeida M, Costa R, Pavão F, Leite RB, Marques A. Asthma-COPD overlap: A Portuguese survey. Pulmonology 2018; 24:S2173-5115(17)30181-1. [PMID: 29338973 DOI: 10.1016/j.rppnen.2017.11.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 11/19/2017] [Indexed: 12/27/2022] Open
Abstract
INTRODUCTION The overlap between asthma and chronic obstructive pulmonary disease (COPD) (ACO) has been discussed for many years but clinical recommendations for this entity have been diverse. This study is intended to reach a consensus on diagnosis, treatment and patient orientation for ACO, within the Portuguese medical community. METHODS This study was conducted by a multidisciplinary panel of experts from three distinct medical specialties (Pulmonology, Family Medicine and Immunoallergology). This panel selected a total of 190 clinicians, based on their expertise in obstructive airway diseases, to participate in a Delphi structured survey with three rounds of questionnaires. These results were ultimately discussed, in a meeting with the panel of experts and some of the study participants, and consensus was reached in terms of classification criteria, treatment and orientation of ACO patients. RESULTS The majority of clinicians (87.2%) considered relevant the definition of an overlap entity between asthma and COPD. A consensus was achieved on the diagnosis of ACO - presence of simultaneous clinical characteristics of asthma and COPD together with a fixed airflow obstruction (FEV1/FVC<0.7) associated with 2 major criteria (previous history of asthma; presence of a previous history of smoking exposure and/or exposure to biomass combustion; positive bronchodilation test (increase in FEV1 of at least 200mL and 12%) on more than 1 occasion) plus 1 minor criteria (history of atopy; age ≥40 years; peripheral eosinophilia (>300eosinophils/μL or >5% of leukocytes); elevation of specific IgEs or positive skin tests for common allergens). A combination of inhaled corticosteroid (ICS) with long-acting beta2-agonist (LABA) or long-acting muscarinic antagonist (LAMA) was considered as first line pharmacological treatment. Triple therapy with ICS plus LABA and LAMA should be used in more severe or symptomatic cases. Non-pharmacological treatment, similar to what is recommended for asthma and COPD, was also considered highly important. A hospital referral of ACO patients should be made in symptomatic or severe cases or when there is a lack of diagnostic resources. CONCLUSIONS This study highlights the relevance of defining ACO, within the Portuguese medical community, and establishes diagnostic criteria that are important for future interventional studies. Recommendations on treatment and patient's orientation were also achieved.
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Affiliation(s)
- E Padrão
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal; Pulmonology Department, Centro Hospitalar de São João, Porto, Portugal.
| | - D Araújo
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal; Pulmonology Department, Centro Hospitalar de São João, Porto, Portugal
| | - A Todo Bom
- Immunoallergology Department, Centro Hospitalar Universitário de Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Portugal
| | - C Robalo Cordeiro
- Pulmonology Department, Centro Hospitalar Universitário de Coimbra, Portugal; Faculty of Medicine, University of Coimbra, Portugal
| | - J Correia de Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal; ICVS/3B's, PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J Cardoso
- Pulmonology Department, Centro Hospitalar de Lisboa Central, Lisboa, Portugal; Nova Medical School, Lisboa, Portugal
| | - M Morais-Almeida
- Coordinator of Allergy Center of CUF Hospitals, Lisboa, Portugal
| | - R Costa
- Family Medicine, Coordinator of GRESP (Grupo de Estudos de Doenças Respiratórias da APMGF), Portugal
| | - F Pavão
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal
| | - R B Leite
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal; Faculty of Health, Medicine and Life Sciences, Maastricht University, Netherlands
| | - A Marques
- Pulmonology Department, Centro Hospitalar de São João, Porto, Portugal; Faculty of Medicine, University of Porto, Portugal
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Araújo D, Padrão E, Morais-Almeida M, Cardoso J, Pavão F, Leite RB, Caldas AC, Marques A. Asthma-chronic obstructive pulmonary disease overlap syndrome - Literature review and contributions towards a Portuguese consensus. Rev Port Pneumol (2006) 2017; 23:90-99. [PMID: 28089081 DOI: 10.1016/j.rppnen.2016.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Accepted: 11/05/2016] [Indexed: 12/29/2022] Open
Abstract
INTRODUCTION Phenotypic overlap between the two main chronic airway pulmonary diseases, asthma and chronic obstructive pulmonary disease (COPD), has been the subject of debate for decades, and recently the nomenclature of asthma-COPD overlap syndrome (ACOS) was adopted for this condition. The definition of this entity in the literature is, however, very heterogeneous, it is therefore important to define how it applies to Portugal. METHODS A literature review of ACOS was made in a first phase resulting in the drawing up of a document that was later submitted for discussion among a panel of chronic lung diseases experts, resulting in reflexions about diagnosis, treatment and clinical guidance for ACOS patients. RESULTS There was a consensus among the experts that the diagnosis of ACOS should be considered in the concomitant presence of: clinical manifestations characteristic of both asthma and COPD, persistent airway obstruction (post-bronchodilator FEV1/FVC<0.7), positive response to bronchodilator test (increase in FEV1 of ≥200mL and ≥12% from baseline) and current or past history of smoking or biomass exposure. In reaching diagnosis, the presence of peripheral eosinophilia (>300eosinophils/μL or >5% of leukocytes) and previous history of atopy should also be considered. The recommended first line pharmacological treatment in these patients is the ICS/LABA association; if symptomatic control is not achieved or in case of clinical severity, triple therapy with ICS/LABA/LAMA may be used. An effective control of the exposure to risk factors, vaccination, respiratory rehabilitation and treatment of comorbidities is also important. CONCLUSIONS The creation of initial guidelines on ACOS, which can be applied in the Portuguese context, has an important role in the generation of a broad nationwide consensus. This will give, in the near future, a far better clinical, functional and epidemiological characterization of ACOS patients, with the ultimate goal of achieving better therapeutic guidance.
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Affiliation(s)
- D Araújo
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal; Pulmonology Department, Centro Hospitalar de São João, Porto, Portugal
| | - E Padrão
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal; Pulmonology Department, Centro Hospitalar de São João, Porto, Portugal.
| | - M Morais-Almeida
- Coordinator of Allergy Center of CUF Hospitals, Lisbon, Portugal
| | - J Cardoso
- Pulmonology Department, Centro Hospitalar de Lisboa Central, Lisboa, Portugal; Nova Medical School, Lisbon, Portugal
| | - F Pavão
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal
| | - R B Leite
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal; Faculty of Health, Medicine and Life Sciences, Maastricht University, Portugal
| | - A C Caldas
- Institute of Health Sciences, Universidade Católica Portuguesa, Portugal
| | - A Marques
- Pulmonology Department, Centro Hospitalar de São João, Porto, Portugal; Faculty of Medicine, University of Porto, Portugal
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Araújo D, Amorim A, Carvalho T, Ramos A, Redondo M, Ribeiro M. Non-tuberculous mycobacteria in patients with non-cystic fibrosis bronchiectasis – a prospective analysis. Pneumologie 2016. [DOI: 10.1055/s-0036-1592247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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17
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Araújo D. Capturing the Complexity of Team Synergies to Provide a Better Practice. Res Q Exerc Sport 2016; 87 Suppl 1:S10-S11. [PMID: 27435547 DOI: 10.1080/02701367.2016.1200414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Affiliation(s)
- D Araújo
- a University of Lisbon , Portugal
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Araújo D, Figueiredo M, Monteiro P. Endobronchial aspergilloma: An unusual presentation of pulmonary aspergillosis. Rev Port Pneumol (2006) 2015; 22:61-2. [PMID: 26299769 DOI: 10.1016/j.rppnen.2015.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 06/29/2015] [Accepted: 07/01/2015] [Indexed: 11/29/2022] Open
Affiliation(s)
- D Araújo
- Respiratory Department, CHAA, Guimarães, Portugal.
| | - M Figueiredo
- Respiratory Department, CHAA, Guimarães, Portugal
| | - P Monteiro
- Anatomy Department, CHAA, Guimarães, Portugal
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Teixeira F, Peixoto D, Costa JA, Bogas M, Taipa R, Melo Pires M, Afonso C, Araújo D. Recurrent Focal myositis: a rare inflammatory myopathy. Acta Reumatol Port 2014; 39:172-175. [PMID: 24859416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Focal myositis is an acute and localized muscle inflammation of unknown aetiology. The clinical diagnosis is often difficult to obtain, since it can be confused with infections, vascular thrombosis or muscle tumours such as sarcomas. This leads to a significant delay in the diagnosis, resulting in the administration of inappropriate and potentially harmful treatments. We report here a case of recurrent focal myositis in a woman where the diagnosis was only obtained after 6 years, despite multiple hospital admissions. This case reinforces the importance of clinical knowledge and experience to tackle challenging medical scenarios.
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Peixoto D, Teixeira F, Lucas R, Costa J, Costa L, Araújo D. AB1128 Vitamin d status in patients with juvenile idiopathic arthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Raposo A, Peixoto D, Teixeira F, Cerqueira M, Bogas M, Costa J, Afonso C, Araújo D. THU0446 Evaluation of Fatigue in Patients with Spondyloarthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Teixeira F, Peixoto D, Costa J, Afonso C, Araújo D. AB0662 Flares in systemic lupus erythematosus: Etiology, outcome and prognostic factors. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Teixeira F, Peixoto D, Afonso C, Araújo D. AB1093 Efficacy and safety of steroid injections for shoulder pain. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Peixoto D, Raposo A, Teixeira F, Costa J, Bogas M, Afonso C, Araújo D. THU0454 Thyroid Involvement in Patients with Spondyloarthritis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Teixeira F, Peixoto D, Bogas M, Afonso C, Araújo D. AB1254 Subclinical atherosclerosis in patients with psoriatic arthritis evaluated by “ultrasonic biopsy”. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Peixoto D, Teixeira F, Raposo A, Costa J, Bogas M, Afonso C, Araújo D. AB0802 Beliefs and treatment satisfaction in patients receiving biological agents. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.3124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Peixoto D, Teixeira F, Costa J, Costa L, Araújo D. AB1129 Radiological cervical spine involvement in juvenile idiopathic arthritis in adulthood. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Rodrigues AJ, Leão P, Pêgo JM, Cardona D, Carvalho MM, Oliveira M, Costa BM, Carvalho AF, Morgado P, Araújo D, Palha JA, Almeida OFX, Sousa N. Mechanisms of initiation and reversal of drug-seeking behavior induced by prenatal exposure to glucocorticoids. Mol Psychiatry 2012; 17:1295-305. [PMID: 21968930 DOI: 10.1038/mp.2011.126] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Stress and exposure to glucocorticoids (GC) during early life render individuals vulnerable to brain disorders by inducing structural and chemical alterations in specific neural substrates. Here we show that adult rats that had been exposed to in utero GCs (iuGC) display increased preference for opiates and ethanol, and are more responsive to the psychostimulatory actions of morphine. These animals presented prominent changes in the nucleus accumbens (NAcc), a key component of the mesolimbic reward circuitry; specifically, cell numbers and dopamine (DA) levels were significantly reduced, whereas DA receptor 2 (Drd2) mRNA expression levels were markedly upregulated in the NAcc. Interestingly, repeated morphine exposure significantly downregulated Drd2 expression in iuGC-exposed animals, in parallel with increased DNA methylation of the Drd2 gene. Administration of a therapeutic dose of L-dopa reverted the hypodopaminergic state in the NAcc of iuGC animals, normalized Drd2 expression and prevented morphine-induced hypermethylation of the Drd2 promoter. In addition, L-dopa treatment promoted dendritic and synaptic plasticity in the NAcc and, importantly, reversed drug-seeking behavior. These results reveal a new mechanism through which drug-seeking behaviors may emerge and suggest that a brief and simple pharmacological intervention can restrain these behaviors in vulnerable individuals.
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Affiliation(s)
- A J Rodrigues
- Life and Health Sciences Research Institute, School of Health Sciences, University of Minho, Braga, Portugal
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Palmares J, Castro-Correia J, Coutinho MF, Araújo D, Delgado L. Immunosuppression in Behçet's disease Clinical management and long-term visual outcome. Ocul Immunol Inflamm 2012; 3:99-106. [PMID: 22827276 DOI: 10.3109/09273949509085037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The authors review the visual prognosis of 44 patients with Behçet's disease referred to the Ophthalmology and Rheumatology Departments (Hospital S. João-one of the two major referral centers in Northern Portugal), due to ocular complaints or for routine examination, in the last ten years. All fulfilled the clinical criteria for diagnosis of Behçet's disease. Twenty-six were male and 18 female, with mean age 37 years (range 23-66). The mean evolution time since the first clinical manifestations was ten years (range 1-21). Aphthous stomatitis (100%) and genital ulcers (77.3%) were the initial manifestations preceding eye involvement. HLA-B(51)(5) was present in 27 of 36 typed patients (75%). Ocular manifestations were present in 33 patients (75%)-22 patients with panuveitis, eight with hypopyon, four with chronic anterior uveitis and three with episcleritis. Mean age of onset of ocular complications was 32 years (range 20-54). Retinal vaso-occlusive vasculitis was diagnosed in 26 patients (22 with panuveitis and four with posterior uveitis). To prevent ocular relapses, all needed immunosuppression with corticosteroids (drops, depo or systemic), combined with cyclosporine A (CsA) (5 mg/kg/day) in 13 patients and with chlorambucil or cyclophosphamide in six patients, when sight threatening uveitis had previously been refractory to treatment with systemic steroids. The 13 patients under CsA were observed for a period ranging from eight months to five years. Lowdose CsA was found to abrogate the intraocular inflammation, was well tolerated and had no major adverse effects. Regardless of the type of treatment, 21% (14/66) of the eyes lost useful vision five to ten years after initial diagnosis.
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Affiliation(s)
- J Palmares
- Ophthalmology, Rheumatology, Porto, Portugal
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Peixoto D, Teixeira F, Costa JA, Costa L, Araújo D. Posterior reversible encephalopathy syndrome: the importance of its recognition in patients with systemic lupus erythematosus. Acta Reumatol Port 2012; 37:192-194. [PMID: 23149644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The posterior reversible encephalopathy syndrome (PRES) is a clinical-radiological entity characterized by the association of clinical neurological signs (headache, confusion, vision changes, vomiting and seizures) and the typical changes in magnetic resonance imaging of the brain. Its pathogenesis is still poorly defined but seems to imply a vascular and endothelial dysfunction. It occurs more frequently in patients with hypertensive encephalopathy, eclampsia, renal failure and has also been associated with the use of immunosuppressive drugs. The authors present a case of PRES in a young woman with systemic lupus erythematosus with active and severe manifestations of the disease.
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Affiliation(s)
- D Peixoto
- Serviço de Reumatologia, Unidade Local de Saúde do Alto Minho, Hospital de Ponte de Lima
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Jelescu IO, Leppert IR, Narayanan S, Araújo D, Arnold DL, Pike GB. Dual-temporal resolution dynamic contrast-enhanced MRI protocol for blood-brain barrier permeability measurement in enhancing multiple sclerosis lesions. J Magn Reson Imaging 2011; 33:1291-300. [PMID: 21590997 DOI: 10.1002/jmri.22565] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
PURPOSE To design a more accurate and reproducible technique for the measurement of blood-brain barrier (BBB) permeability in gadolinium-enhancing multiple sclerosis (MS) lesions. MATERIALS AND METHODS Four MS patients were scanned using a new dynamic contrast-enhanced (DCE)-magnetic resonance imaging (MRI) protocol based on an uninterrupted two-part acquisition consisting of an initial part at high temporal and low spatial resolutions and a second part at low temporal and high spatial resolutions. The method preserves both the high spatial resolution needed for the often small size of lesions and the high temporal resolution required during the first minute after injection to sufficiently sample the first-pass bolus. Simulations compared the performance of this new protocol with the conventional one at low temporal and high spatial resolutions throughout. RESULTS The BBB permeability estimates changed by up to 33% between the two protocols. The new protocol led to simulated error on K(trans) of 7%-10%, versus 7%-30% with the conventional protocol, and was more robust with respect to offsets between acquisition and injection start times, differences in shape of the first-pass peak, and permeability values. CONCLUSION The dual-temporal resolution protocol produces improved BBB permeability estimates and provides a more complete view of active inflammatory MS lesion pathology.
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Affiliation(s)
- I O Jelescu
- McConnell Brain Imaging Centre, Montreal Neurological Institute, Montreal, Quebec, Canada.
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Travassos B, Araújo D, Vilar L, McGarry T. Interpersonal coordination and ball dynamics in futsal (indoor football). Hum Mov Sci 2011; 30:1245-59. [PMID: 21683464 DOI: 10.1016/j.humov.2011.04.003] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 04/16/2011] [Accepted: 04/22/2011] [Indexed: 11/28/2022]
Abstract
Here, we report an investigation of the patterned movement behavior of players for a specific sub-phase of the game of futsal, namely when the goalkeeper for the attacking team is substituted with an extra outfield player. The movement trajectories of the ball and players were recorded in both lateral and longitudinal directions and investigated using relative phase analysis. Some differences in phase relations between different playing dyads were noted, indicating specificity of phase attractions, or otherwise, for certain players. In general terms, the defenders demonstrated strong in-phase attractions with the ball and with each other, whereas weaker phase attractions, indicated by increased relative phase variability, were observed for the attackers and ball, as well as between attackers themselves. These results demonstrate different coordination dynamics for the defending and attacking dyads, from which we interpret evidence for different playing sub-systems consistent with different team objectives linked together in an overarching game structure. In keeping with dynamical systems theory for complex systems, we view this sub-phase of futsal as being characterized by coordinated behavior patterns that emerge as a result of self-organizing processes. These dynamic patterns are generated within functional constraints, with players and teams exerting mutual influence on each other.
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Affiliation(s)
- B Travassos
- Faculty of Human Kinetics, Technical University of Lisbon, Portugal.
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Abstract
In 2009, Kannekens and colleagues evaluated the development of tactical skills of elite youth football players using a method based on verbal reports. Results showed no improvements in players' tactical skills over the years of their longitudinal study. These results are based on an erroneous assumption that tactical skills and verbalizations about tactical skills are equivalent. This note comprises an explanation of why verbal reports are not a valid measure of tactical skills.
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Affiliation(s)
- D Araújo
- Faculty of Human Kinetics, Technical University of Lisbon.
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Gutiérrez M, Pastore CE, Araújo D, Miguel-Sánchez J, Rodríguez-Messmer E. Mechanism of phase separation generation in Ge-based solar cell tunnel junctions. J Nanosci Nanotechnol 2010; 10:1166-1170. [PMID: 20352773 DOI: 10.1166/jnn.2010.1866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Enhanced performance, reduced cost and compact dimensions are a prerequisite for novel products in the solar industry. III-V based multi-junction heterostructures are promising devices to give an answer to make a substancial step in the photovoltaic technology. However, such heterostructures need tunnel junctions to connect the different active layers and so ternary alloys are needed to tune the energy gap. In the present contribution, artefacts generated by ternary alloying are investigated by transmission electron microscopy (TEM). Composition modulation in In0.015Ga0.985As/In0.3Ga0.7P/Al0.3Ga0.7As/In0.3Ga0.6Al0.1P/In0.3Al0.7P/In0.015Ga0.985As heterostructures grown on Ge subtrates is observed. This should affect the spectral sensitivity of the active layer. But, as a probably more important consequence, this observed modulation is shown to also generate modulation in the Al0.3Ga0.7As tunnel junction. This behaviour is anomalous in standard AIGaAs thick epilayers grown on GaAs substrates. In the present case, it could strongly affect the carrier transport imposing an important handicap to their potential application within electro-optical components.
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Affiliation(s)
- M Gutiérrez
- Departamento de Ciencia de los Materiales e IM y QI, Universidad de Cádiz, 11510 Puerto Real, Spain
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da Costa JAT, Ribeiro A, Bogas M, Costa L, Varino C, Lucas R, Rodrigues A, Araújo D. Mortality and functional impairment after hip fracture - a prospective study in a Portuguese population. Acta Reumatol Port 2009; 34:618-626. [PMID: 20852575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
OBJECTIVES Osteoporotic hip fractures (HF) are a major cause of morbidity and mortality with increasing familial, social and economic repercussions. The objectives of this paper were to evaluate the status vitae at 6 and 12 months of a cohort of patients with an osteoporotic HF and the risk factors for 12-month mortality as well as to evaluate the functional outcome and the overall health perception of these patients. PATIENTS AND METHODS We conducted a 12-month follow-up evaluation of a cohort of 184 patients older than 65 years admitted to our centre with a non-pathological osteoporotic HF from January 1st to December 31st 2007. Baseline data collection was performed in the first 72 hours after admission and, 12 months later, a second evaluation was conducted, by telephone in order to ascertain their status vitae and functional status. The magnitude of sex--specific, age-adjusted associations between potential prognostic factors and mortality was estimated using hazard ratios (HR) and respective 95% confidence intervals (95%CI), calculated using Cox's proportional hazards model. RESULTS It was possible to ascertain the status vitae in 164 (89.1%) patients. Overall 12-months mortality was 26.8% (48.3% in males and 22.2% in females). Mortality was higher in patients that became bedridden, were unable to walk again, were admitted to a hospital during the follow-up for any cause and who became dependent in their daily living activities. After discharge, physical therapy and ability to walk again were associated with a lower risk of death. Most of the patients reported a decline of their overall health-related quality of life. More than 75% of patients became totally dependent after HF. CONCLUSION This study reinforces the HF poor outcome. Twelve-month mortality rates were similar to the estimates obtained in other studies, although the 6-month's mortality was higher. Physical deterioration and loss of independence in activities of daily living were evident in this study and constituted major factors for low self-esteem and deterioration of quality of life. Our findings may constitute an evidence for action in this particular population, with an active search for means to improve the outcome of HF in these patients.
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Sanches R, Crippa J, Hallak J, de Sousa J, Araújo D, Santos A, Zuardi A. Proton magnetic resonance spectroscopy of the frontal, cingulate and perirolandic cortices and its relationship to skin conductance in patients with schizophrenia. Braz J Med Biol Res 2008; 41:1132-41. [DOI: 10.1590/s0100-879x2008001200015] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2008] [Accepted: 12/04/2008] [Indexed: 11/21/2022] Open
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Costa J, Bogas M, Ribeiro A, Alcino S, Araújo D. [Multiple enchondromatosis: Ollier's disease]. Acta Reumatol Port 2008; 33:473-474. [PMID: 19107092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- J Costa
- Serviço de Reumatologia do CHAM, EPE - Ponte de Lima.
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Bogas M, Afonso MC, Araújo D. [Sacroileitis and acne conglobata: SAPHO syndrome]. Acta Reumatol Port 2008; 33:370-371. [PMID: 18846019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- M Bogas
- Serviço de Reumatologia do Centro Hospitalar do Alto Minho, Ponte de Lima.
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39
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Trzesniak C, Uchida R, Santos Filho A, Araújo D, Graeff F, Santos A, Guimarães F, Del-Ben C, Crippa J. Reduced hippocampal N-Acetylaspartate in patients with panic disorder. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.1235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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40
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Crippa J, Zuardi A, Busatto G, Santos-Filho A, Graeff F, Borduqui T, Santos A, Araújo D, Duran F, Del-Ben C, Freitas M. Grey matter correlates of cognitive measures of the simulated public speaking test in social anxiety spectrum: a voxel-based study. Eur Psychiatry 2008. [DOI: 10.1016/j.eurpsy.2008.01.359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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41
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Velasco TR, Zanello PA, Dalmagro CL, Araújo D, Santos AC, Bianchin MM, Alexandre V, Walz R, Assirati JA, Carlotti CG, Takayanagui OM, Sakamoto AC, Leite JP. Calcified cysticercotic lesions and intractable epilepsy: a cross sectional study of 512 patients. J Neurol Neurosurg Psychiatry 2006; 77:485-8. [PMID: 16543527 PMCID: PMC2077509 DOI: 10.1136/jnnp.2005.078675] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Neurocysticercosis is a major cause of epilepsy in developing countries and is endemic in Brazil. To test the hypothesis that the aetiological profile of patients with intractable epilepsy in Brazil includes neurocysticercosis, we conducted a cross sectional study investigating the aetiology of intractable epilepsy. METHODS A total of 512 patients evaluated at the outpatient clinic for intractable epilepsy at the Ribeirão Preto School of Medicine were included in the survey. Medical intractability was determined on the basis of seizure incidence and severity, and response to appropriate epilepsy management. Neuroimaging included brain CT with non-contrasted and contrasted phases and high resolution MRI. Patients were divided into neurocysticercosis and non-neurocysticercosis groups according to previous diagnostic criteria. RESULTS The most common epileptogenic lesions were mesial temporal sclerosis (MTS; 56.0%), malformations of cortical development (12.1%), and brain tumours (9.9%). Neuroimaging was normal in 8.7% of patients. Calcifications were found in 27% of patients and were significantly more common in patients with MTS than in those without MTS (p<0.001). Isolated neurocysticercosis was found in only eight patients (1.56%). CONCLUSIONS These data suggest that neurocysticercosis is an uncommon cause of intractable epilepsy, even in an endemic region such as Brazil, and that it may only represent a coexistent pathology. However, an analysis of our findings reveals that neurocysticercosis was more common in patients with MTS. This finding could suggest either that there is a cause-effect relationship between MTS and neurocysticercosis, or that MTS and neurocysticercosis co-vary with a missing variable, such as socio-economic status.
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Affiliation(s)
- T R Velasco
- CIREP, Centro de Cirurgia de Epilepsia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo 14.048-900, SP, Brazil.
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42
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Hristovski R, Davids K, Araújo D. Bifurcations in motor solutions to the continuous boxing hand-striking task: Some spatial, sequential and temporal characteristics. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)83008-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Araújo D, Passos P, Davids K. The dynamics of interpersonal coordination as emergent properties in sport. J Biomech 2006. [DOI: 10.1016/s0021-9290(06)83009-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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44
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Araújo D, Cella MD, Brescovit DA. Cytogenetic analysis of the neotropical spider Nephilengys cruentata (Araneomorphae, Tetragnathidae): standard staining nors, C-bands and base-specific fluorochromes. BRAZ J BIOL 2005; 65:193-202. [PMID: 16097721 DOI: 10.1590/s1519-69842005000200002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The aim of this work is to characterize Nephilengys cruentata in relation to the diploid number, chromosome morphology, type of sex determination chromosome system, chromosomes bearing the Nucleolar Organizer Regions (NORs), C-banding pattern, and AT or GC repetitive sequences. The chromosome preparations were submitted to standard staining (Giemsa), NOR silver impregnation, C-banding technique, and base-specific fluorochrome staining. The analysis of the cells showed 2n = 24 and 2n = 26 chromosomes in the embryos, and 2n = 26 in the ovarian cells, being all the chromosomes acrocentric. The long arm of the pairs 1, 2 and 3 showed an extensive negative heteropycnotic area when the mitotic metaphases were stained with Giemsa. The sexual chromosomes did not show differential characteristics that allowed to distinguish them from the other chromosomes of the complement. Considering the diploid numbers found in N. cruentata and the prevalence of X1X2 sex determination chromosome system in Tetragnathidae, N. cruentata seems to possess 2n = 24 = 22 + X1X2 in the males, and 2n = 26 = 22 + X1X1X2X2 in the females. The pairs 1, 2 and 3 showed NORs which are coincident with the negative heteropycnotic patterns. Using the C-banding technique, the pericentromeric region of the chromosomes revealed small quantity or even absence of constitutive heterochromatin, differing of the C-banding pattern described in other species of spiders. In N. cruentata the fluorochromes DAPI/DA, DAPI/MM and CMA3/DA revealed that the constitutive heterochromatin is rich in AT bases and the NORs possess repetitive sequences of GC bases.
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Affiliation(s)
- D Araújo
- Universidade Estadual Paulista, UNESP, Instituto de Biociências, Departamento de Biologia, Av. 24A, 1515, CEP 13506-900, Rio Claro, SP, Brazil.
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45
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Guarnieri R, Araújo D, Carlotti CG, Assirati JA, Hallak JEC, Velasco TR, Alexandre V, Terra-Bustamante VC, Walz R, Bianchin MM, Wichert-Ana L, Linhares M, Dalmagro CL, Inuzuka LM, Sakamoto AC. Suppression of obsessive-compulsive symptoms after epilepsy surgery. Epilepsy Behav 2005; 7:316-9. [PMID: 16043417 DOI: 10.1016/j.yebeh.2005.05.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2004] [Revised: 05/25/2005] [Accepted: 05/27/2005] [Indexed: 11/29/2022]
Abstract
We report two male patients with medically intractable epilepsy and obsessive-compulsive disorder (OCD) symptoms. Both patients experienced remission of obsessive-compulsive symptoms after surgical treatment of epilepsy. Although the surgeries targeted different brain regions, the two patients had in common unilateral anterior cingulate cortex ablation. On the basis of these observations, we discuss the pathophysiology of OCD symptoms, emphasizing the role of corticosubcortical pathways in their genesis. Our data suggest that surgeries that affect neural loops associated with obsessive-compulsive symptoms can lead to an improvement of OCD; however, the structures responsible for this effect cannot be conclusively determined.
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Affiliation(s)
- R Guarnieri
- Center for Epilepsy Surgery (CIREP), Hospital das Clínicas da FMRP-USP, Ribeirão Preto, SP, Brazil.
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46
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Terra-Bustamante VC, Coimbra ER, Rezek KO, Escorsi-Rosset SR, Guarnieri R, Dalmagro CL, Inuzuka LM, Bianchin MM, Wichert-Ana L, Alexandre V, Takayanagui OM, Araújo D, dos Santos AC, Carlotti CG, Walz R, Markowitsch HJ, Sakamoto AC. Cognitive performance of patients with mesial temporal lobe epilepsy and incidental calcified neurocysticercosis. J Neurol Neurosurg Psychiatry 2005; 76:1080-3. [PMID: 16024883 PMCID: PMC1739752 DOI: 10.1136/jnnp.2004.048934] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVES Although chronic calcified neurocysticercosis (NCC) has been considered a major cause of symptomatic epilepsy in developing countries, it can also be an incidental pathological finding in epileptic patients from endemic regions. The mechanisms of brain plasticity occurring in patients with NCC during and after the inflammatory process related to the parasite infection, death, degeneration, and calcification within the host brain might be an independent factor for cognitive impairment in patients with NCC and epilepsy. In order to assess this possibility cognitive performance of patients with mesial temporal lobe epilepsy related to hippocampal sclerosis (MTLE-HS) with and without NCC was investigated through structured neuropsychological testing. METHODS Cognitive performance of long term MTLE-HS patients with (HS-NCC group, n = 32) and without NCC (HS only, n = 48) was compared. Imbalances between the two groups with respect to clinical, demographic, neuroimaging, and electrophysiological variables were adjusted by linear multiple regression analysis and Bonferroni correction for multiple tests. RESULTS AND CONCLUSIONS There were no cognitive performance differences between HS-NCC and HS only patients, leading to the conclusion that chronic calcified NCC per se does not aggravate the cognitive performance of patients with long term MTLE-HS.
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Affiliation(s)
- V C Terra-Bustamante
- Center (CIREP), Department of Neurology, Ribeirão Preto School of Medicine, University of São Paulo, Brazil.
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47
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Walz R, Castro RMRPS, Landemberger MC, Velasco TR, Terra-Bustamante VC, Bastos AC, Bianchin M, Wichert-Ana L, Araújo D, Alexandre V, Santos AC, Machado HR, Carlotti CG, Brentani RR, Martins VR, Sakamoto AC. Cortical malformations are associated with a rare polymorphism of cellular prion protein. Neurology 2005; 63:557-60. [PMID: 15304595 DOI: 10.1212/01.wnl.0000133400.34423.ad] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Studies in animals lacking the cellular prion protein (PrP(c)) gene (Prnp) showed higher neuronal excitability in vitro and increased sensitivity to seizures in vivo. The authors previously reported a rare polymorphism at codon 171 (Asn-->Ser) of human Prnp to be associated with mesial temporal lobe epilepsy related to hippocampal sclerosis. They demonstrated that the same variant allele is also associated with symptomatic epilepsies related to different forms of malformations of cortical development.
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Affiliation(s)
- R Walz
- CIREP, de Cirurgia de Epilepsia, Departamento de Neurologia, Psiquiatria e Psicologia Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
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Carneiro AA, Vilela GR, Fernandes JB, Araújo D, Baffa O, Elias J, St Pierre G, Angulo IL, Covas DT. In vivo tissue characterization using magnetic techniques. Neurol Clin Neurophysiol 2004; 2004:85. [PMID: 16012653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Among the few non-invasive methods to quantify liver iron deposits, magnetic resonance imaging (MRI) and biomagnetic liver susceptometry (BLS) have been considered the best to evaluate iron overload in the body. This diagnosis is necessary for patients who regularly receive red blood cells transfusion and that have a genetic disorder known as hemochromatosis. In this work, we present the evaluation of the clinical usefulness of MRI and BLS of hepatic tissue to quantify iron deposits in non-transfused and transfused patients. Liver iron evaluation by MRI and BLS were performed in a group of 48 patients. The MRI images weighted in T2 were acquired using multi-slice single-spin-echo (SSE) and single-slice multi-spin-echo (MSE), conducted on a 1.5 T whole body scanner. BLS measurements were performed using an ac superconducting susceptometer based on SQUID. Typically MRI is able to evaluate iron overload in liver as high as 30 mg/g(dry tissue) when using MRI scanners provided with specially designed pulse sequences. For higher iron concentrations susceptibility measurement works better than MRI to evaluate higher iron overloads in the liver, because in this case there is saturation of MRI signal.
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Affiliation(s)
- A A Carneiro
- Departamento de Física e Matemática, FFCLRP, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
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Crippa JAS, Uchida R, Busatto GF, Guimarães FS, Del-Ben CM, Zuardi AW, Santos AC, Araújo D, McGuire PK, Graeff FG. The size and prevalence of the cavum septum pellucidum are normal in subjects with panic disorder. Braz J Med Biol Res 2004; 37:371-4. [PMID: 15060705 DOI: 10.1590/s0100-879x2004000300013] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Panic disorder is thought to involve dysfunction in the septohippocampal system, and the presence of a cavum septum pellucidum might indicate the aberrant development of this system. We compared the prevalence and size of cavum septum pellucidum in 21 patients with panic disorder and in 21 healthy controls by magnetic resonance imaging. The length of the cavum septum pellucidum was measured by counting the number of consecutive 1-mm coronal slices in which it appeared. A cavum septum pellucidum of >6 mm in length was rated as large. There was no significant difference in the proportion of patients (16 of 21 or 76.2%) and controls (18 of 21 or 85.7%) with a cavum septum pellucidum (P=0.35, Fisher's exact test, one-tailed), and no members of either group had a large cavum septum pellucidum. The mean cavum septum pellucidum rating in the patient and control groups was 1.81 (SD=1.50) and 2.09 (SD=1.51), respectively. There were also no significant differences between groups when we analyzed cavum septum pellucidum ratings as a continuous variable (U=196.5; P=0.54). Across all subjects there was a trend towards a higher prevalence of cavum septum pellucidum in males (100%, 10 of 10) than females (75%, 24 of 32; P=0.09, Fisher's exact test, one-tailed). Thus, we conclude that, while panic disorder may involve septo-hippocampal dysfunction, it is not associated with an increased prevalence or size of the cavum septum pellucidum.
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Affiliation(s)
- J A S Crippa
- Departamento de Neurologia, Psiquiatria e Psicologia Médica, Facudade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brasil.
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50
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Walz R, Castro RMRPS, Velasco TR, Alexandre V, Lopes MH, Leite JP, Santos AC, Assirati JA, Wichert-Ana L, Terra-Bustamante VC, Bianchin MM, Maciag PC, Ribeiro KB, Guarnieri R, Araújo D, Cabalero O, Moura R, Salim ACM, Kindlmann K, Landemberger MC, Marques W, Fernandes RMF, Serafini LN, Machado HR, Carlotti CG, Brentani RR, Sakamoto AC, Martins VR. Surgical outcome in mesial temporal sclerosis correlates with prion protein gene variant. Neurology 2003; 61:1204-10. [PMID: 14610121 DOI: 10.1212/01.wnl.0000096940.92986.02] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Mesial temporal lobe epilepsy related to hippocampal sclerosis (MTLE-HS) is the most common surgically remediable epileptic syndrome. Ablation of the cellular prion protein (PrP(c)) gene (PRNP) enhances neuronal excitability of the hippocampus in vitro and sensitivity to seizure in vivo, indicating that PrP(c) might be related to epilepsy. OBJECTIVE To evaluate the genetic contribution of PRNP to MTLE-HS. METHODS The PRNP coding sequence of DNA from peripheral blood cells of 100 consecutive patients with surgically treated MTLE-HS was compared to that from a group of healthy controls adjusted for sex, age, and ethnicity (n = 180). The presence of PRNP variant alleles was correlated with clinical and presurgical parameters as well as surgical outcome. RESULTS A variant allele at position 171 (Asn-->Ser), absent in controls, was found in heterozygosis (Asn171Ser) in 23% of patients (p < 0.0001). The PRNP genotypes were not correlated with any clinical or presurgical data investigated. However, patients carrying the Asn171Ser variant had a five times higher chance of continuing to have seizures after temporal lobectomy (95% CI 1.65 to 17.33, p = 0.005) than those carrying the normal allele. At 18 months after surgery, 91.8% of patients with the normal allele at codon 171 were seizure free, in comparison to 68.2% of those carrying Asn171Ser (p = 0.005). CONCLUSIONS The PRNP variant allele Asn171Ser is highly prevalent in patients with medically untreatable MTLE-HS and influences their surgical outcome. The results suggest that the PRNP variant allele at codon 171 (Asn171Ser) is associated with epileptogenesis in MTLE-HS.
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Affiliation(s)
- R Walz
- CIREP, Centro de Cirurgia de Epilepsia, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo (FMRP-USP), Ribeirão Preto, Brazil.
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