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Pargana J, Calé R, Martinho M, Santos J, Lourenço C, Castro Pereira JA, Araújo P, Morgado J, Pereira E, Judas T, Alegria S, Ferreira F, Delerue F, Pereira H. Prevalence and predictors of chronic thromboembolic pulmonary hypertension following severe forms of acute pulmonary embolism. Rev Port Cardiol 2023; 42:947-958. [PMID: 37652118 DOI: 10.1016/j.repc.2023.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/26/2023] [Accepted: 06/05/2023] [Indexed: 09/02/2023] Open
Abstract
INTRODUCTION AND OBJECTIVES The true prevalence of chronic thromboembolic pulmonary hypertension (CTEPH) after pulmonary embolism (PE) in the Portuguese population remains unknown. We aimed to assess the prevalence and predictors of CTEPH two years after a symptomatic high- (HR) or intermediate-high risk (IHR) PE. METHODS We conducted a retrospective cohort study of patients admitted with PE between 2014 and 2019 to a Portuguese referral center for pulmonary hypertension. RESULTS In this single-center registry of 969 patients admitted with PE (annual incidence of 46/100000 population), 194 had HR (5.4%) and IHR (14.7%) PE. After excluding patients who died or had no follow-up in the first three months, 129 patients were included in the analysis. The overall prevalence of suspected CTEPH by clinical assessment, Doppler echocardiography and V/Q lung scan was 6.2% (eight patients). CTEPH was confirmed by right heart catheterization in four of these (3.1%). Increased pulmonary artery systolic pressure (PASP) at admission (OR 1.12; 95% CI 1.04-1.22; p=0.005) and the presence of varicose veins in the lower limbs (OR 7.47; 95% CI 1.53-36.41; p=0.013) were predictors of CTEPH. PASP >60 mmHg at admission identified patients with CTEPH at follow-up with sensitivity and specificity of 83.3% and 76.3%, respectively. All patients diagnosed with CTEPH had at least two radiological findings suggestive of CTEPH at the index event. CONCLUSIONS In our cohort, the prevalence of CTEPH in survivors of severe forms of acute PE was 6.2%. PASP above 60 mmHg and supporting radiological findings on the index computed tomography scan are highly suggestive of acute-on-chronic CTEPH.
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Affiliation(s)
- Joana Pargana
- Centro Cardiovascular da Universidade de Lisboa-CCUL (CCUL@RISE), CAML, Faculdade de Medicina, Lisbon University, Portugal
| | - Rita Calé
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal.
| | - Mariana Martinho
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal
| | - João Santos
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal
| | - Cândida Lourenço
- Department of Radiology, Hospital Garcia de Orta, Almada, Portugal
| | | | - Patrícia Araújo
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal
| | - João Morgado
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal
| | - Ernesto Pereira
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal; Escola Superior de Saúde da Cruz Vermelha Portuguesa, Lisboa, Portugal
| | - Tiago Judas
- Department of Internal Medicine, Hospital Garcia de Orta, Almada, Portugal
| | - Sofia Alegria
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal
| | - Filipa Ferreira
- Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal
| | - Francisca Delerue
- Department of Internal Medicine, Hospital Garcia de Orta, Almada, Portugal
| | - Hélder Pereira
- Centro Cardiovascular da Universidade de Lisboa-CCUL (CCUL@RISE), CAML, Faculdade de Medicina, Lisbon University, Portugal; Department of Cardiology, Hospital Garcia de Orta, Almada, Portugal
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Pereira A, Santos J, Loureiro M, Ferreira F, Almeida A, Cale R, Repolho D, Vitorino S, Morgado J, Pereira H. Thermodilution vs indirect fick cardiac output measurement in clinical practice: insights from a tertiary centre. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2252] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
Thermodilution (TD) and indirect Fick (IF) methods are widely used to measure cardiac output (CO). They are often used interchangeably to make critical clinical decisions, yet few studies have compared these approaches concerning agreement and comparative prognostic value as applied in medical practice.
Purpose
To assess agreement between TD and IF methods and to compare how well these methods predict mortality.
Methods
Retrospective cohort study including all consecutive right heart catheterizations performed in a referral pulmonary hypertension (PH) centre from 2010 to 2018. Cardiac index (CI) was calculated by indexed CO to body surface area. PH was classified according to the new definition of the 6st World Symposium on Pulmonary Hypertension 2018 [mean pulmonary arterial pressure (mPAP) >20 mmHg]. Patients with cardiac or extra-cardiac shunts or significant (moderate to severe or severe) tricuspid regurgitation were excluded. All-cause mortality over 1 year after right heart catheterization was recorded. Logistic regression was used to identify predictors of the adverse event.
Results
From a total of 569 procedures, 424 fulfilled the inclusion criteria: mean age 56.7±15.4 years, 67.3% female. Haemodynamic parameters were diagnosed of PH in 86.2% of cases: mPAP 35.3±15.3 mmHg, 83.6% pre-capillary subtype, 42.9% belonging to group 4 (chronic thromboembolic pulmonary hypertension) and 26.6% to group 1 (pulmonary arterial hypertension). Mean values of CO and CI were, respectively, 4.5±2.8 L/min and 2.5±0.8 L/min/m2 measured by TD and 4.6±2.4 L/min and 2.6±1.3 L/min/m2 measured by IF method. There was a median difference (IF minus TD) of - 0.03 / min to CO and - 0.05 L/min/m2 to CI but both meausres correlated only modestly (r=0.6 to TD and r=0.5 to IF). One-year all-cause mortality rate was 5.4% (median time to death was 50.5 days). Lower values of CO and CI assessed by TD were significantly associated with all-cause mortality occurrence (CO TD: 4.5±1.3 L/min versus 3.6±1.0 L/min, p<0.01; CI TD: 2.6±0.7 L/min/m2 versus 2.1±0.4 L/min/m2, p<0.01). No association was observed between CO (p=0.31) and CI (p=0.42) measured by IF method and the adverse event. Logistic regression identified 2 independent predictors of all-cause mortality: TD CO (OR 0.55, 95% CI 0.38–0.79, p<0.01) and TD CI (OR 0.34, 95% CI 0.17–0.67, p<0.01). Similar results were obtained when patients diagnosed with PH were independently analyzed.
Conclusions
There is only modest agreement between TD and IF CO and CI estimates. Despite being more time-consuming, TD measurements were predictors of all-cause mortality and present a highest prognostic value. These findings favored their used over IF in clinical practice.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- A Pereira
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - J.G Santos
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - M.J Loureiro
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - F Ferreira
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - A.R Almeida
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - R Cale
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - D Repolho
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - S Vitorino
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - J Morgado
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
| | - H Pereira
- Hospital Garcia de Orta, Cardiology, Almada, Portugal
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Oliveira J, Bragança AM, Alcácer L, Morgado J, Figueiredo M, Bioucas-Dias J, Ferreira Q. Sparse-coding denoising applied to reversible conformational switching of a porphyrin self-assembled monolayer induced by scanning tunnelling microscopy. J Microsc 2018; 271:98-108. [PMID: 29655172 DOI: 10.1111/jmi.12699] [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: 06/07/2017] [Revised: 01/30/2018] [Accepted: 03/13/2018] [Indexed: 12/01/2022]
Abstract
Scanning tunnelling microscopy (STM) was used to induce conformational molecular switching on a self-assembled monolayer of zinc-octaethylporphyrin on a graphite/tetradecane interface at room temperature. A reversible conformational change controlled by applying a tip voltage was observed. Consecutive STM images acquired at alternating tip voltages showed that at 0.4 V the porphyrin monolayer presents a molecular arrangement formed by alternate rows with two different types of structural conformations and when the potential is increased to 0.7 V the monolayer presents only one type of conformation. In this paper, we characterize these porphyrin conformational dynamics by analyzing the STM images, which were improved for better quality and interpretation by means of a denoising algorithm, adapted to process STM images from state of the art image processing and analysis methods. STM remains the best technique to 'see' and to manipulate the matter at atomic scale. A very sharp tip a few angstroms of the surface can provide images of molecules and atoms with a powerful resolution. However, these images are strongly affected by noise which is necessary to correct and eliminate. This paper is about new computational tools specifically developed to denoise the images acquired with STM. The new algorithms were tested in STM images, obtained at room temperature, of porphyrin monolayer which presents reversible conformational change in function of the tip bias voltage. Images with high resolution, acquired in real time, show that the porphyrins have different molecular arrangements whether the tip voltage is 0.4 V or 0.7 V.
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Affiliation(s)
- J Oliveira
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.,Instituto Universitário de Lisboa (ISCTE-IUL), Av. das Forças Armadas, 1649-026, Lisbon, Portugal
| | - A M Bragança
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - L Alcácer
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - J Morgado
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.,Bioengineering Department, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - M Figueiredo
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.,Department of Electrical and Computer Engineering, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - J Bioucas-Dias
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001, Lisbon, Portugal.,Department of Electrical and Computer Engineering, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
| | - Q Ferreira
- Instituto de Telecomunicações, Av. Rovisco Pais, 1049-001, Lisbon, Portugal
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Abstract
Purpose
The purpose of this paper is to propose a maintenance programme for flat roofs in existing buildings, based on the inspection of 26 buildings in-service conditions, located in the Lisbon region, in Portugal. A proactive maintenance of flat roofs in existing buildings allows reducing their pathology, thus improving their performance and service life.
Design/methodology/approach
The maintenance plan was established based on the degradation state of the maintenance source elements (MSEs) analysed, the aggressiveness of the surrounding environment and the age of the roofs and maintenance actions carried out during the roofing systems’ life cycle.
Findings
The maintenance plan proposed in this study includes the prioritization of the interventions, the definition of the required maintenance operations and the definition of the frequency of the intervention, considering the service lives of the MSEs.
Research limitations/implications
The study addresses only roofs located in the Lisbon area. Even though a relatively large sample of 26 roofs was used, the findings and conclusions can clearly be extrapolated for a much wider scope.
Practical implications
The maintenance plan proposed in this study considers a planning of proactive maintenance operations to continuously and effectively monitor all the relevant MSE.
Originality/value
This plan allows minimizing the incidence and spread of defects, thus enabling the optimization of resources, reducing the costs of the entire maintenance system and improving the quality of the built environment.
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Martins IP, Fonseca J, Morgado J, Leal G, Farrajota L, Fonseca AC, Melo TP. Language improvement one week after thrombolysis in acute stroke. Acta Neurol Scand 2017; 135:339-345. [PMID: 27098844 DOI: 10.1111/ane.12604] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2016] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Language recovery following acute stroke is difficult to predict due to several evaluation factors and time constraints. We aimed to investigate the predictors of aphasia recovery and to identify the National Institute of Health and Stroke Scale (NIHSS) items that best reflect linguistic performance, 1 week after thrombolysis. MATERIALS AND METHODS We retrieved data from a prospective registry of patients with aphasia secondary to left middle cerebral artery (MCA) stroke treated with intravenous thrombolysis. Complete recovery at day 7 (D7) was measured in a composite verbal score (CVS) (Σ Language+Questions+Commands NIHSS scores). Lesion size was categorized by the Alberta Stroke Program Early CT score (ASPECTS) and vascular patency by ultrasound. CVS was correlated with standardized aphasia testing if both were performed within a two-day interval. RESULTS Of 228 patients included (age average 67.32 years, 131 men), 72% presented some language improvement that was complete in 31%. Total recovery was predicted by ASPECTS (OR=1.65; 95% CI, 1.295-2.108; P < 0.00) and baseline aphasia severity (OR=0.439; 95% CI, 0.242-0.796; P < 0.007). CVS correlated better with standardized aphasia measures (aphasia quotient, severity, comprehension) than NIHSS_Language item. CONCLUSIONS Lesion size and initial aphasia severity are the main predictors of aphasia recovery one week after thrombolysis. A NIHSS composite verbal score seems to capture the global linguistic performance better than the language item alone.
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Affiliation(s)
- I. P. Martins
- Language Research Laboratory; Faculty of Medicine and IMM; University of Lisbon; Lisbon Portugal
| | - J. Fonseca
- Language Research Laboratory; Faculty of Medicine and IMM; University of Lisbon; Lisbon Portugal
| | - J. Morgado
- Department of Neurology; Centro Hospitalar Lisboa Central; Lisbon Portugal
| | - G. Leal
- Language Research Laboratory; Faculty of Medicine and IMM; University of Lisbon; Lisbon Portugal
- Department of Neurology; Hospital de Santa Maria - Centro Hospitalar Lisboa Norte; Lisbon Portugal
| | - L. Farrajota
- Language Research Laboratory; Faculty of Medicine and IMM; University of Lisbon; Lisbon Portugal
- Department of Neurology; Hospital de Santa Maria - Centro Hospitalar Lisboa Norte; Lisbon Portugal
| | - A. C. Fonseca
- Department of Neurology; Hospital de Santa Maria - Centro Hospitalar Lisboa Norte; Lisbon Portugal
- Stroke Unit; Hospital de Santa Maria - Centro Hospitalar Lisboa Norte; Lisbon Portugal
| | - T. P. Melo
- Department of Neurology; Hospital de Santa Maria - Centro Hospitalar Lisboa Norte; Lisbon Portugal
- Stroke Unit; Hospital de Santa Maria - Centro Hospitalar Lisboa Norte; Lisbon Portugal
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More S, Bicout D, Bøtner A, Butterworth A, Calistri P, Depner K, Edwards S, Garin-Bastuji B, Good M, Gortázar Schmidt C, Michel V, Miranda MA, Saxmose Nielsen S, Raj M, Sihvonen L, Spoolder H, Thulke HH, Velarde A, Willeberg P, Winckler C, Adlhoch C, Baldinelli F, Breed A, Brouwer A, Guillemain M, Harder T, Monne I, Roberts H, Cortinas Abrahantes J, Mosbach-Schulz O, Verdonck F, Morgado J, Stegeman A. Urgent request on avian influenza. EFSA J 2017; 15:e04687. [PMID: 32625275 PMCID: PMC7009852 DOI: 10.2903/j.efsa.2016.4687] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Highly pathogenic avian influenza (HPAI) H5N8 is currently causing an epizootic in Europe, infecting many poultry holdings as well as captive and wild bird species in more than 10 countries. Given the clear clinical manifestation, passive surveillance is considered the most effective means of detecting infected wild and domestic birds. Testing samples from new species and non‐previously reported areas is key to determine the geographic spread of HPAIV H5N8 2016 in wild birds. Testing limited numbers of dead wild birds in previously reported areas is useful when it is relevant to know whether the virus is still present in the area or not, e.g. before restrictive measures in poultry are to be lifted. To prevent introduction of HPAIV from wild birds into poultry, strict biosecurity implemented and maintained by the poultry farmers is the most important measure. Providing holding‐specific biosecurity guidance is strongly recommended as it is expected to have a high impact on the achieved biosecurity level of the holding. This is preferably done during peace time to increase preparedness for future outbreaks. The location and size of control and in particular monitoring areas for poultry associated with positive wild bird findings are best based on knowledge of the wider habitat and flight distance of the affected wild bird species. It is recommended to increase awareness among poultry farmers in these established areas in order to enhance passive surveillance and to implement enhanced biosecurity measures including poultry confinement. There is no scientific evidence suggesting a different effectiveness of the protection measures on the introduction into poultry holdings and subsequent spread of HPAIV when applied to H5N8, H5N1 or other notifiable HPAI viruses. This publication is linked to the following EFSA Supporting Publications article: http://onlinelibrary.wiley.com/doi/10.2903/sp.efsa.2016.EN-1142/full
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Morgado J, Sousa AP, Alves P, Medeiros L. Hereditary neuropathy with liability to pressure palsy presenting as a bilateral brachial plexopathy. Neurologia 2016; 32:626-629. [PMID: 26874568 DOI: 10.1016/j.nrl.2015.11.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2015] [Revised: 10/26/2015] [Accepted: 11/30/2015] [Indexed: 10/22/2022] Open
Affiliation(s)
- J Morgado
- Servicio de Neurología, Centro Hospitalar Lisboa Central, Lisboa, Portugal.
| | - A P Sousa
- Servicio de Neurología, Centro Hospitalar Lisboa Central, Lisboa, Portugal
| | - P Alves
- Servicio de Radiología, Centro Hospitalar Lisboa Central, Lisboa, Portugal
| | - L Medeiros
- Servicio de Neurofisiología, Centro Hospitalar Lisboa Central, Lisboa, Portugal
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Cordeiro Sousa D, Ferreira Q, Araujo M, Morgado J, Ferreira J, Leal I, Abegao Pinto L, Marques-Neves C. Nanomedicine and Ophthalmology: looking forward. Acta Ophthalmol 2015. [DOI: 10.1111/j.1755-3768.2015.0669] [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: 11/28/2022]
Affiliation(s)
- D. Cordeiro Sousa
- Lisbon Academic Medical Center; Ophthalmology; Hospital Santa Maria; Lisboa Portugal
- Faculty of Medicine; Lisbon Academic Medical Center; Lisboa Portugal
| | - Q. Ferreira
- Instituto Superior Técnico; Instituto de Telecomunicacoes; Lisbon Portugal
| | - M. Araujo
- Instituto Superior Técnico; Biomedical Engineering; Lisbon Portugal
| | - J. Morgado
- Instituto Superior Técnico; Instituto de Telecomunicacoes; Lisbon Portugal
- Instituto Superior Técnico; Bioengineering; Lisbon Portugal
| | - J. Ferreira
- Centro Hospitalar Lisboa Central; Ophthalmology; Lisbon Portugal
| | - I. Leal
- Lisbon Academic Medical Center; Ophthalmology; Hospital Santa Maria; Lisboa Portugal
- Faculty of Medicine; Lisbon Academic Medical Center; Lisboa Portugal
| | - L. Abegao Pinto
- Faculty of Medicine; Lisbon Academic Medical Center; Lisboa Portugal
| | - C. Marques-Neves
- Lisbon Academic Medical Center; Ophthalmology; Hospital Santa Maria; Lisboa Portugal
- Faculty of Medicine; Lisbon Academic Medical Center; Lisboa Portugal
- Centro de Estudos Ciencias da Visao; Ophthalmology; Lisbon Portugal
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Fernandes S, Bruno D, Morgado J, Calle C, Ferreira C. Low serum iron as a risk factor for ICU-acquired bacteremia: study of a large cohort database. Crit Care 2015. [PMCID: PMC4471213 DOI: 10.1186/cc14150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Dias S, Sequeira J, Morgado J, Jacinto J, Calado A, Pena J. Unilateral asterixis following thalamic stroke. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1049] [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: 10/26/2022]
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Dias S, Sequeira J, Capela C, Morgado J, Almeida M. Spastic paraparesis and sensorineural hearing loss in a case of neurobrucellosis. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.2477] [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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Morgado J, Dias S, Figueira R, Maia B, Águas H, Pedrosa R. Spinal schistosomiasis: Relevance of epidemiologic and imaging features in an unusual case of myelopathy. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.2389] [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: 10/26/2022]
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Morgado J, Branco P, Castanho P, Manita M. Awakening after initiating levodopa in a thalamic hemorrhage. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1072] [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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Kanlaya R, Sintiprungrat K, Thongboonkerd V, Torremade N, Bindels R, Hoenderop J, Fernandez E, Dusso A, Valdivielso JM, Krueger T, Boor P, Schafer C, Westenfeld R, Brandenburg V, Schlieper G, Jahnen-Dechent W, Ketteler M, Jee W, Li X, Richards B, Floege J, Goncalves JG, Canale D, de Braganca AC, Shimizu MHM, Moyses RMA, Andrade L, Seguro AC, Volpini RA, Romoli S, Migliorini A, Anders HJ, Eskova O, Neprintseva N, Tchebotareva N, Bobkova I, Kozlovskaya L, Simic I, Tabatabaeifar M, Wlodkowski T, Denc H, Mollet G, Antignac C, Schaefer F, Ekaterina IA, Giardino L, Rastaldi MP, Van den Heuvel L, Levtchenko E, Okina C, Okamoto T, Kamata M, Murano J, Kobayashi K, Takeuchi K, Kamata F, Sakai T, Naito S, Aoyama T, Sano T, Takeuchi Y, Kamata K, Thomasova D, Bruns HA, Liapis H, Anders HJ, Iwashita T, Hasegawa H, Takayanagi K, Shimizu T, Asakura J, Okazaki S, Kogure Y, Hatano M, Hara H, Inamura M, Iwanaga M, Mitani T, Mitarai T, Savin VJ, Sharma M, Wei C, Reiser J, McCarthy ET, Sharma R, Gauchat JF, Eneman B, Freson K, Van den Heuvel L, Van Geet C, Levtchenko E, Choi DE, Jeong JY, Chang YK, Na KR, Lee KW, Shin YT, Ni HF, Chen JF, Zhang MH, Pan MM, Liu BC, Lee KW, Jeong JY, Choi DE, Chang YK, Kim SS, Na KR, Shin YT, Suzuki T, Iyoda M, Matsumoto K, Shindo-Hirai Y, Kuno Y, Wada Y, Yamamoto Y, Shibata T, Akizawa T, Munoz-Felix JM, Lopez-Novoa JM, Martinez-Salgado C, Ehling J, Babickova J, Gremse F, Kiessling F, Floege J, Lammers T, Boor P, Lech M, Gunthner R, Lorenz G, Ryu M, Grobmayr R, Susanti H, Kobayashi KS, Flavell RA, Anders HJ, Rayego-Mateos S, Morgado J, Sanz AB, Eguchi S, Pato J, Keri G, Egido J, Ortiz A, Ruiz-Ortega M, Leduc M, Geerts L, Grouix B, Sarra-Bournet F, Felton A, Gervais L, Abbott S, Duceppe JS, Zacharie B, Penney C, Laurin P, Gagnon L, Detsika MG, Duann P, Lianos EA, Leong KI, Chiang CK, Yang CC, Wu CT, Chen LP, Hung KY, Liu SH, Carvalho FF, Teixeira VP, Almeida WS, Schor N, Small DM, Bennett NC, Coombes J, Johnson DW, Gobe GC, Montero N, Prada A, Riera M, Orfila M, Pascual J, Rodriguez E, Barrios C, Kokeny G, Fazekas K, Rosivall L, Mozes MM, Munoz-Felix JM, Lopez-Novoa JM, Martinez-Salgado C, Hornigold N, Hughes J, Mooney A, Benardeau A, Riboulet W, Vandjour A, Jacobsen B, Apfel C, Conde-Knape K, Grouix B, Felton A, Sarra-Bournet F, Leduc M, Geerts L, Gervais L, Abbott S, Bienvenu JF, Duceppe JS, Zacharie B, Penney C, Laurin P, Gagnon L, Tanaka T, Yamaguchi J, Nangaku M, Niwa T, Bolati D, Shimizu H, Yisireyili M, Nishijima F, Brocca A, Virzi G, de Cal M, Ronco C, Priante G, Musacchio E, Valvason C, Sartori L, Piccoli A, Baggio B, Boor P, Perkuhn M, Weibrecht M, Zok S, Martin IV, Schoth F, Ostendorf T, Kuhl C, Floege J, Karabaeva A, Essaian A, Beresneva O, Parastaeva M, Kayukov I, Smirnov A, Audzeyenka I, Kasztan M, Piwkowska A, Rogacka D, Angielski S, Jankowski M, Bockmeyer CL, Kokowicz K, Agustian PA, Zell S, Wittig J, Becker JU, Nishizono R, Venkatareddy MP, Chowdhury MA, Wang SQ, Fukuda A, Wickman LT, Yang Y, Wiggins RC, Fazio MR, Donato V, Lucisano S, Cernaro V, Lupica R, Trimboli D, Montalto G, Aloisi C, Mazzeo AT, Buemi M, Gawrys O, Olszynski KH, Kuczeriszka M, Gawarecka K, Swiezewska E, Chmielewski M, Masnyk M, Rafalowska J, Kompanowska-Jezierska E, Lee WC, Chau YY, Lee LC, Chiu CH, Lee CT, Chen JB, Kim WK, Shin SJ. Experimental models of CKD. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft114] [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: 11/12/2022] Open
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Morgado J, Pereira AT, Braganca AM, Ferreira Q, Fernandes SCM, Freire CSR, Silvestre AJD, Pascoal Neto C, Alcacer L. Self-standing chitosan films as dielectrics in organic thin-film transistors. EXPRESS POLYM LETT 2013. [DOI: 10.3144/expresspolymlett.2013.94] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Khalil GE, Adawi AM, Robinson B, Cadby AJ, Tsoi W, Kim JS, Charas A, Morgado J, Lidzey DG. Spectroscopy and Single-Molecule Emission of a Fluorene-Terthiophene Oligomer. J Phys Chem B 2011; 115:12028-35. [DOI: 10.1021/jp206368g] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- G. E. Khalil
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
- National Institute of Laser Enhanced Science (NILES), Cairo University, Cairo, Egypt
| | - A. M. Adawi
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
| | - B. Robinson
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
| | - A. J. Cadby
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
| | - W.C. Tsoi
- The Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - J-S. Kim
- The Blackett Laboratory, Imperial College, Prince Consort Road, London SW7 2BZ, United Kingdom
| | - A. Charas
- Instituto de Telecomunicações, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal
| | - J. Morgado
- Instituto de Telecomunicações, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal
| | - D. G. Lidzey
- Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, United Kingdom
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Pita J, Pereira A, Ferreira J, Morgado J. The portuguese psychiatry in the european setting: Study of a hospital drug formulary in the beginning of the 20 th century. Eur Psychiatry 2011. [DOI: 10.1016/s0924-9338(11)72942-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
The results of an investigation conducted on the Formulario Especial dos Medicamentos para o Hospital de alienados em Rilhafoles (1901), a mental disease drug formulary for the oldest Portuguese psychiatric hospital, are presented. The study considered the Portuguese situation within the European setting.This study quantifies the number of drugs and pharmaceutical forms and establishes a comparison with the most commonly used international psychiatric medication at the time. The present study aims at contributing to the history of psychiatric drug therapy before the advent of psychoactive drugs. The most commonly used pharmaceutical forms and therapeutic groups in psychiatry are evaluated. Furthermore, we also wish to contribute to the evaluation of how Portugal received and implemented innovations in drug therapy.Quantitative and qualitative document analysis of the above mentioned formulary, using the comparative method.The edition of this formulary arose from the need to standardize specific medication for mental patients. In the Formulario, 61 medicinal products are proposed. There were 8 different pharmaceutical forms. The potions were the most commonly referred (32). Hypnotics represented approximately half of the medicinal products (28), followed by hypokinetics (9), and analgesics and antipyretics (8).The formulary was in line with foreign scientific innovations. Pharmacotherapeutic variety of drugs was short and resorting to non-drug therapies was also usual. The edition of this formulary was mainly due to the work conducted by the psychiatrist Miguel Bombarda (1851–1910), a prominent public figure in medicine and in the political and cultural arena.
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Alvarez-Twose I, González-de-Olano D, Sánchez-Muñoz L, Matito A, Morgado J, Jara-Acevedo M, Teodosio C, García-Montero A, Orfao A, Escribano L. Validation of the REMA Score for Predicting Systemic Mastocytosis in Patients with Mast Cell Activation Disorders. J Allergy Clin Immunol 2011. [DOI: 10.1016/j.jaci.2010.12.988] [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: 10/18/2022]
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Geraldes L, Morgado J, Almeida A, Todo-Bom A, Santos P, Paiva A, Cheira C, Pais ML. Expression patterns of HLA-DR+ or HLA-DR- on CD4+/CD25++/CD127low regulatory T cells in patients with allergy. J Investig Allergol Clin Immunol 2010; 20:201-209. [PMID: 20635785] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023] Open
Abstract
BACKGROUND Allergic rhinoconjunctivitis induced by pollen is a highly prevalent chronic inflammatory disease in Europe. Parietariajudaica is a frequent trigger in the Mediterranean area. The function of regulatory T cells (Treg cells) in allergy has recently been investigated, but further data are necessary to better understand their role and to find new strategies to treat allergic diseases such as allergic rhinoconjunctivitis. OBJECTIVE To characterize gene expression of HLA-DR+ or HLA-DR- on peripheral CD4+/CD25++/CD127low Treg cells in patients with allergy. METHODS Peripheral Treg cells (CD4+/CD25++/CD127low) were quantified using flow cytometry and sorted according to HLA-DR expression during the pollen season in patients with allergic rhinoconjunctivitis caused by P. judaica. The results were compared with those of nonatopic controls. Expression of associated cytokines and their receptors was measured using quantitative reverse transcription-polymerase chain reaction after extraction of mRNA in sorted populations. RESULTS During the pollen season, no significant differences were observed between allergic patients with rhinoconjunctivitis and healthy controls in terms of the absolute number or the percentage of Treg cells in peripheral blood. All patients had a higher number/percentage of HLA-DR- Treg cells than HLA-DR+ Treg cells. In both groups we found high levels of FOXP3 mRNA expression. Despite being lower in number, HLA-DR+ Treg cells presented higher expression of CD28, PRF1, GZMB, and FASL than HLA-DR-Treg cells. CONCLUSIONS The most relevant results obtained suggest that HLA-DR+ Treg cells tend to present higher gene expression of molecules associated with contact-dependent cell activation and cytotoxicity.
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Affiliation(s)
- L Geraldes
- Immunoallergology Department, Coimbra University Hospitals, Coimbra, Portugal
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Knaapila M, Garamus VM, Dias FB, Almásy L, Galbrecht F, Charas A, Morgado J, Burrows HD, Scherf U, Monkman AP. Influence of Solvent Quality on the Self-Organization of Archetypical Hairy Rods−Branched and Linear Side Chain Polyfluorenes: Rodlike Chains versus “Beta-Sheets” in Solution. Macromolecules 2006. [DOI: 10.1021/ma060886c] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- M. Knaapila
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - V. M. Garamus
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - F. B. Dias
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - L. Almásy
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - F. Galbrecht
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - A. Charas
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - J. Morgado
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - H. D. Burrows
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - U. Scherf
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
| | - A. P. Monkman
- Department of Physics, University of Durham, South Road, Durham DH1 3LE, UK; GKSS Research Centre, Max-Planck-Strasse 1, D-21502 Geesthacht, Germany; Research Institute for Solid State Physics and Optics, P.O. Box 49, Budapest-1525, Hungary; Macromolekulare Chemie, Institut für Polymertechnologie, Bergische Universität Wuppertal, Gauss-Strasse 20, D-42097 Wuppertal, Germany; Instituto de Telecomunicações, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; and Departamento de
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Fonseca SM, Pina J, Arnaut LG, Seixas de Melo J, Burrows HD, Chattopadhyay N, Alcacer L, Charas A, Morgado J, Monkman AP, Asawapirom U, Scherf U, Edge R, Navaratnam S. Triplet-State and Singlet Oxygen Formation in Fluorene-Based Alternating Copolymers. J Phys Chem B 2006; 110:8278-83. [PMID: 16623508 DOI: 10.1021/jp060251f] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.4] [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: 11/30/2022]
Abstract
Data are reported on the triplet states of a series of fluorene-based A-alt-B type alternating copolymers based on pulse radiolysis-energy transfer and flash photolysis experiments. From the pulse radiolysis experiments, spectra are given for eight copolymers involving phenylene, thiophene, benzothiadiazole, and oligothienylenevinylene groups. Quantum yields for triplet-state formation (PhiT) have been obtained by flash photolysis following laser excitation and in one case by photoacoustic calorimetry. In addition, yields of sensitized formation of singlet oxygen have been determined by time-resolved phosphorescence and are, in general, in excellent agreement with the PhiT values. In all cases, the presence of thiophene units is seen to increase intersystem-crossing quantum yields, probably because of the presence of the heavy sulfur atom. However, with the poly[2,7-(9,9-bis(2'-ethylhexyl)fluorene)-alt-1,4-phenylene] (PFP), thiophene S,S-dioxide (PFTSO2) and benzothiadiazole (F8BT) copolymers, low yields of triplet formation are observed. With three of the copolymers, the energies of the triplet states have been determined. With PFP, the triplet energy is virtually identical to that of poly[2,7-(9,9-bis(2'-ethylhexyl)fluorene)]. In contrast, with fluorene-thiophene copolymers PFaT and PF3T, the triplet energies are closer to those of thiophene oligomers, indicating that there is significant conjugation between fluorene and thiophene units but also that there is a more localized triplet state than with the homopolymers.
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Affiliation(s)
- S M Fonseca
- Departamento de Química, Universidade de Coimbra, 3004-535 Coimbra, Portugal
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Burrows H, Arnaut L, Pina J, de Melo JS, Chattopadhyay N, Alcácer L, Charas A, Morgado J. Characterisation of the triplet state of a fluorene–terthiophene alternating copolymer [Chem. Phys. Lett. 402 (2005) 197–201]. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2005.02.006] [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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Burrows H, Arnaut L, Pina J, Seixas de Melo J, Chattopadhyay N, Alcácer L, Charas A, Morgado J. Characterisation of the triplet state of a fluorene–terthiophene alternating copolymer. Chem Phys Lett 2005. [DOI: 10.1016/j.cplett.2004.12.031] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [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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Morgado J, Charas A, Barbagallo N, Alcacer L. Polymer light-emitting diodes based on a soluble poly(p-phenylene vinylene) with interfaces modified by self-assembly. Electrical Performance of Electrical Packaging (IEEE Cat. No. 03TH8710) 2004. [DOI: 10.1109/essderc.2003.1256839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Morgado J, Barbagallo N, Charas A, Alcácer L. Self-assembled ionic multilayers on the surface of a nonionic, soluble, poly(p-phenylene vinylene) and its influence on the performance of light-emitting diodes. Synthetic Metals 2004; 141:219-223. [DOI: 10.1016/s0379-6779(03)00379-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Abstract
The painting of vehicles in the automobile industry generates large quantities of gaseous emissions which contain volatile organic compounds (VOC) like xylenes. This polluted air has a high moisture content and a temperature around 15-20 degrees C. It is thus possible to consider its treatment by a biological way. In this paper, laboratory tests are described which led to the choice of packing material to make a biofilter having good removal efficiency. Moreover this technique is known for its simplicity and low energy cost. The maximum treatment capacity was obtained with peat. A mathematical model which makes it possible to specify the different limiting steps of the process was carried out. This considered both physical parameters of the biofilter and properties of the biofilm. By choosing a lower Henry's constant than typical air:water system, we obtain a better simulation of the xylenes concentration according to the biofilter length and applied load.
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Affiliation(s)
- J Morgado
- Laboratoire Optimisation Conception et Ingénierie de l'Environnement, Ecole Supérieure d'Ingénieurs de Chambéry, Université de Savoie, 73376 Le Bourget du lac, France
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Charas A, Morgado J, Martinho J, Alcácer L, Lim S, Friend R, Cacialli F. Synthesis and luminescence properties of three novel polyfluorene copolymers. POLYMER 2003. [DOI: 10.1016/s0032-3861(03)00028-4] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Morgado J, Charas A, Barbagallo N. Reduction of the light-onset voltage of light-emitting diodes based on a soluble poly( p-phenylene vinylene) by grafting polar molecules onto indium–tin oxide. Applied Physics Letters 2002; 81:933-935. [DOI: 10.1063/1.1497440] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
We report on the reduction of the light-onset voltage of light-emitting diodes based on poly[(2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] with aluminum cathodes down to 2.2 V by grafting polar molecules onto indium-tin oxide. This value is close to Eg/e=2.13 V, Eg being the energy gap estimated from the absorption onset and e the electron charge, in spite of the poor electron injection ability of the aluminum cathode. In addition, there is a very efficient suppression of the commonly observed low-voltage current peaks.
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Affiliation(s)
- J. Morgado
- Instituto Superior Técnico, Departamento de Engenharia Quı́mica, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal
| | - A. Charas
- Instituto Superior Técnico, Departamento de Engenharia Quı́mica, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal
| | - N. Barbagallo
- Instituto Superior Técnico, Departamento de Engenharia Quı́mica, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal
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Charas A, Barbagallo N, Morgado J, Alcácer L. Synthesis and optical properties of poly(fluorene)-based alternating copolymers. Synthetic Metals 2001; 122:23-25. [DOI: 10.1016/s0379-6779(00)01328-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Morgado J, Cacialli F, Friend RH, Chuah BS, Rost H, Holmes AB. Light-Emitting Devices Based on a Poly(p-phenylenevinylene) Statistical Copolymer with Oligo(ethylene oxide) Side Groups. Macromolecules 2001. [DOI: 10.1021/ma001997t] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J. Morgado
- Departamento de Engenharia Química, Instituto Superior Técnico, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK; and Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, UK
| | - F. Cacialli
- Departamento de Engenharia Química, Instituto Superior Técnico, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK; and Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, UK
| | - R. H. Friend
- Departamento de Engenharia Química, Instituto Superior Técnico, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK; and Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, UK
| | - B. S. Chuah
- Departamento de Engenharia Química, Instituto Superior Técnico, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK; and Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, UK
| | - H. Rost
- Departamento de Engenharia Química, Instituto Superior Técnico, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK; and Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, UK
| | - A. B. Holmes
- Departamento de Engenharia Química, Instituto Superior Técnico, Avenida Rovisco Pais, P-1049-001 Lisboa, Portugal; Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK; and Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Pembroke Street, Cambridge, CB2 3RA, UK
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Morgado J, Cacialli F, Friend R, Iqbal R, Yahioglu G, Milgrom L, Moratti S, Holmes A. Tuning the red emission of a soluble poly(p-phenylene vinylene) upon grafting of porphyrin side groups. Chem Phys Lett 2000. [DOI: 10.1016/s0009-2614(00)00725-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Riehn R, Morgado J, Iqbal R, Moratti SC, Holmes AB, Volta S, Cacialli F. Electrochemical and Electroluminescent Properties of Random Copolymers of Fluorine- and Alkoxy-Substituted Poly(p-phenylene vinylene)s. Macromolecules 2000. [DOI: 10.1021/ma992147k] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. Riehn
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.; Departamento de Engenharia Quimica, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; Department of Chemistry, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K; Melville Laboratory for Polymer Synthesis, New Museums site, Pembroke Street, Cambridge CB2 3RA, U.K.; and Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller
| | - J. Morgado
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.; Departamento de Engenharia Quimica, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; Department of Chemistry, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K; Melville Laboratory for Polymer Synthesis, New Museums site, Pembroke Street, Cambridge CB2 3RA, U.K.; and Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller
| | - R. Iqbal
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.; Departamento de Engenharia Quimica, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; Department of Chemistry, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K; Melville Laboratory for Polymer Synthesis, New Museums site, Pembroke Street, Cambridge CB2 3RA, U.K.; and Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller
| | - S. C. Moratti
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.; Departamento de Engenharia Quimica, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; Department of Chemistry, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K; Melville Laboratory for Polymer Synthesis, New Museums site, Pembroke Street, Cambridge CB2 3RA, U.K.; and Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller
| | - A. B. Holmes
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.; Departamento de Engenharia Quimica, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; Department of Chemistry, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K; Melville Laboratory for Polymer Synthesis, New Museums site, Pembroke Street, Cambridge CB2 3RA, U.K.; and Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller
| | - S. Volta
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.; Departamento de Engenharia Quimica, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; Department of Chemistry, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K; Melville Laboratory for Polymer Synthesis, New Museums site, Pembroke Street, Cambridge CB2 3RA, U.K.; and Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller
| | - F. Cacialli
- Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE, U.K.; Departamento de Engenharia Quimica, Instituto Superior Técnico, Av. Rovisco Pais, P-1049-001 Lisboa, Portugal; Department of Chemistry, University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K; Melville Laboratory for Polymer Synthesis, New Museums site, Pembroke Street, Cambridge CB2 3RA, U.K.; and Institut für Organische Chemie und Makromolekulare Chemie, Friedrich-Schiller
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Motta MC, Soares MJ, Attias M, Morgado J, Lemos AP, Saad-Nehme J, Meyer-Fernandes JR, De Souza W. Ultrastructural and biochemical analysis of the relationship of Crithidia deanei with its endosymbiont. Eur J Cell Biol 1997; 72:370-7. [PMID: 9127737] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Some protozoa of the Trypanosomatidae family harbor in their cytoplasm bacterial endosymbionts that provide essential nutrients to and induce morphological alterations in the protozoa. In the present study, a close association between endosymbionts and glycosomes, a peroxisome-like organelle where most of the enzymes of the glycolytic pathway are compartmentalized, was identified by conventional transmission electron microscopy in Crithidia deanei. Such an association was further supported by the cytochemical localization of catalase in the glycosome and also confirmed by 3-D reconstruction of the protozoan. The enzymes cytochrome oxidase and succinate dehydrogenase were detected by ultrastructural cytochemistry. A positive reaction was observed in the protozoan mitochondrion but not in the endosymbiont envelope. Enzymatic assays for succinate cytochrome c reductase reinforced these results, as a low enzymatic activity was detected in an endosymbiont-enriched fraction, while high activity was observed in a purified protozoan mitochondrion fraction. We also demonstrated that a purified symbiont fraction was able to hydrolyze ATP. This activity was Mg+2 dependent, since it was highly stimulated by the presence of physiological concentrations of this ion. Taken together, these observations suggest that no electron transporting system is active in the symbionts of Crithidia deanei and that they might obtain energetic molecules derivated from the protozoan glycosomes.
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Affiliation(s)
- M C Motta
- Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, RJ, Brazil
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Santos P, Tavares L, Lourengo R, Morgado J, Figueira I, Brum G, Camilo M, Costa F. P.15 Disease severity scores predict enteral nutrition tolerance. Clin Nutr 1995. [DOI: 10.1016/s0261-5614(95)80164-2] [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: 10/26/2022]
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Hirayama H, Morgado J, Gasinska I, Pang KS. Estimations of intestinal and liver first-pass metabolism in vivo. Studies on gentisamide conjugation in the rat. Drug Metab Dispos 1990; 18:588-94. [PMID: 1981706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
In this paper a method is introduced to study both intestinal and liver metabolism in the intact rat by cannulation of the jugular vein, carotid artery, pyloric vein (into the portal vein), and bladder. In this preparation, the rat received an initial dose followed by iv (I) and then intraportal (II) infusions. Gentisamide (2,5-dihydroxybenzamide, GAM) was used since it forms monosulfate (GAM-2S and GAM-5S) and monoglucuronide (GAM-5G) conjugates, metabolites that are not further metabolized. After administration of tracer amounts of radiolabeled gentisamide ([3H]GAM), the concentration ratio of [3H]GAM in the portal vein and carotid artery [CPV(I)/CA(I)] during iv infusion, and the ratio of carotid artery concentrations for intraportal to iv infusions [CA(II)/CA(I)] provided the intestine and liver availabilities, respectively; the corresponding extraction ratios for the intestine and liver were 0.26 to 0.27 and 0.37 to 0.41. Similar concentration ratios for the conjugates during iv administration [CPV(I)/CA(I)] showed intestine formation of GAM-5G, and to a lesser extent, GAM-2S, since the ratios exceeded unity; GAM-5S was not formed by the intestine since the ratio was unchanged. The ratio of the carotid arterial concentrations for intraportal to iv infusions that revealed hepatic formation showed similar values (1.77 and 1.71) for GAM-2S and GAM-5S, but variable (decreases and increases) GAM-5G values, whose mean value approximated unity. All findings were consistent with data obtained from the perfused rat liver preparation and the combined perfusion of rat intestine-liver preparation, where GAM-5G and GAM-2S were shown to be formed by the intestine, and where sulfation was the preferred pathway in the liver.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- H Hirayama
- Faculty of Pharmacy, University of Toronto, Ontario, Canada
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