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Magalhães D, Costa C, Furtado I, Matos MJ, Santos AP, Duarte H, Afonso M, Lobo J, Torres I. Seemingly Harmless Differentiated Thyroid Carcinoma Presenting as Bone Metastasis. Case Rep Endocrinol 2018; 2018:8749075. [PMID: 29967702 PMCID: PMC6008661 DOI: 10.1155/2018/8749075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 04/11/2018] [Indexed: 02/08/2023] Open
Abstract
Thyroid carcinoma is the most common endocrine neoplasia. Differentiated thyroid carcinomas (DTCs) represent the majority of cases, which usually follow an indolent clinical course with low mortality rates. The authors describe two cases of well DTC without classic histological poor prognosis features, presenting as extensive and unresectable osteolytic bone metastases. DTCs are considered harmless tumours, due to their benign and silent behaviour. The authors want to underline the importance of clinical awareness during follow-up in cases of DTC, which can be aggressive in presentation and behaviour. Timely identification and diagnosis of these tumours are essential for prompt treatment initiation and improvement of overall survival.
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Affiliation(s)
- D. Magalhães
- Endocrinology, Diabetes and Metabolism Department, Centro Hospitalar São João, Porto, Portugal
- Faculty of Medicine of University of Porto, Porto, Portugal
- Instituto de Investigação e Inovação em Saúde, University of Porto, Porto, Portugal
| | - C. Costa
- Endocrinology Department, Instituto Português de Oncologia, Porto, Portugal
| | - I. Furtado
- Internal Medicine Department, Centro Hospitalar do Porto, Porto, Portugal
| | - M. J. Matos
- Endocrinology Department, Instituto Português de Oncologia, Porto, Portugal
| | - A. P. Santos
- Endocrinology Department, Instituto Português de Oncologia, Porto, Portugal
| | - H. Duarte
- Nuclear Medicine Department, Instituto Português de Oncologia, Porto, Portugal
| | - M. Afonso
- Pathology Department, Instituto Português de Oncologia, Porto, Portugal
| | - J. Lobo
- Pathology Department, Instituto Português de Oncologia, Porto, Portugal
- Cancer Biology and Epigenetics Group, Research Center, Instituto Português de Oncologia, Porto, Portugal
- Pathology and Molecular Immunology Department, Institute of Biomedical Sciences Abel Salazar (ICBAS), University of Porto, Porto, Portugal
| | - I. Torres
- Endocrinology Department, Instituto Português de Oncologia, Porto, Portugal
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Delogu GL, Pintus F, Mayán L, Matos MJ, Vilar S, Munín J, Fontenla JA, Hripcsak G, Borges F, Viña D. MAO inhibitory activity of bromo-2-phenylbenzofurans: synthesis, in vitro study, and docking calculations. Medchemcomm 2017; 8:1788-1796. [PMID: 30108888 PMCID: PMC6084085 DOI: 10.1039/c7md00311k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 07/05/2017] [Indexed: 11/21/2022]
Abstract
Monoamine oxidase (MAO) is an enzyme responsible for metabolism of monoamine neurotransmitters which play an important role in brain development and function. This enzyme exists in two isoforms, and it has been demonstrated that MAO-B activity, but not MAO-A activity, increases with aging. MAO inhibitors show clinical value because besides the monoamine level regulation they reduce the formation of by-products of the MAO catalytic cycle, which are toxic to the brain. A series of 2-phenylbenzofuran derivatives was designed, synthesized and evaluated against hMAO-A and hMAO-B enzymes. A bromine substituent was introduced in the 2-phenyl ring, whereas position 5 or 7 of the benzofuran moiety was substituted with a methyl group. Most of the tested compounds inhibited preferentially MAO-B in a reversible manner, with IC50 values in the low micro or nanomolar range. The 2-(2'-bromophenyl)-5-methylbenzofuran (5) was the most active compound identified (IC50 = 0.20 μM). In addition, none of the studied compounds showed cytotoxic activity against the human neuroblastoma cell line SH-SY5Y. Molecular docking simulations were used to explain the observed hMAO-B structure-activity relationship for this type of compounds.
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Affiliation(s)
- G L Delogu
- Department of Life Sciences and Environment - Section of Pharmaceutical Sciences - University of Cagliari, 09124 Cagliari, Italy.
| | - F Pintus
- Department of Life Sciences and Environment - Section of Pharmaceutical Sciences - University of Cagliari, 09124 Cagliari, Italy.
| | - L Mayán
- Department of Pharmacology - CIMUS University of Santiago de Compostela Avda Barcelona s/n, Campus Vida, 15782 Santiago de Compostela, Spain.
- Department of Pharmacology, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - M J Matos
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - S Vilar
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
- Department of Biomedical Informatics, Columbia University, Medical Center of New York, 10032 New York, USA
| | - J Munín
- Department of Pharmacology - CIMUS University of Santiago de Compostela Avda Barcelona s/n, Campus Vida, 15782 Santiago de Compostela, Spain.
- Department of Organic Chemistry, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - J A Fontenla
- Department of Pharmacology, Faculty of Pharmacy, University of Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - G Hripcsak
- Department of Biomedical Informatics, Columbia University, Medical Center of New York, 10032 New York, USA
| | - F Borges
- CIQUP/Department of Chemistry and Biochemistry, University of Porto, 4169-007, Portugal
| | - D Viña
- Department of Pharmacology - CIMUS University of Santiago de Compostela Avda Barcelona s/n, Campus Vida, 15782 Santiago de Compostela, Spain.
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Guardado Yordi E, Matos MJ, Pérez Martínez A, Tornes AC, Santana L, Molina E, Uriarte E. In silico genotoxicity of coumarins: application of the Phenol-Explorer food database to functional food science. Food Funct 2017; 8:2958-2966. [PMID: 28745361 DOI: 10.1039/c7fo00402h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Coumarins are a group of phytochemicals that may be beneficial or harmful to health depending on their type and dosage and the matrix that contains them. Some of these compounds have been proven to display pro-oxidant and clastogenic activities. Therefore, in the current work, we have studied the coumarins that are present in food sources extracted from the Phenol-Explorer database in order to predict their clastogenic activity and identify the structure-activity relationships and genotoxic structural alerts using alternative methods in the field of computational toxicology. It was necessary to compile information on the type and amount of coumarins in different food sources through the analysis of databases of food composition available online. A virtual screening using a clastogenic model and different software, such as MODESLAB, ChemDraw and STATISTIC, was performed. As a result, a table of food composition was prepared and qualitative information from this data was extracted. The virtual screening showed that the esterified substituents inactivate molecules, while the methoxyl and hydroxyl substituents contribute to their activity and constitute, together with the basic structures of the studied subclasses, clastogenic structural alerts. Chemical subclasses of simple coumarins and furocoumarins were classified as active (xanthotoxin, isopimpinellin, esculin, scopoletin, scopolin and bergapten). In silico genotoxicity was mainly predicted for coumarins found in beer, sherry, dried parsley, fresh parsley and raw celery stalks. The results obtained can be interesting for the future design of functional foods and dietary supplements. These studies constitute a reference for the genotoxic chemoinformatic analysis of bioactive compounds present in databases of food composition.
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Affiliation(s)
- E Guardado Yordi
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba. and Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - M J Matos
- Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - A Pérez Martínez
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba. and Universidad Estatal Amazónica, Facultad de Ciencias de la Tierra, Km 2 1/2 vía Puyo a Tena (Paso Lateral), Puyo, Ecuador
| | - A C Tornes
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba.
| | - L Santana
- Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - E Molina
- Universidad de Camagüey Ignacio Agramonte Loynaz, Facultad de Ciencias Aplicadas, Cincunvalación Norte Km 5 1/2, Camagüey, Cuba. and Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain
| | - E Uriarte
- Universidad de Santiago de Compostela, Facultad de Farmacia, Campus vida, 15782 Santiago de Compostela, Spain and Instituto de Química Aplicada, Universidad Autónoma de Chile, Pedro de Valdivia 425, 7500912 Santiago, Chile
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Matos MJ, Vilar S, Kachler S, Vazquez-Rodriguez S, Varela C, Delogu G, Hripcsak G, Santana L, Uriarte E, Klotz KN, Borges F. Progress in the development of small molecules as new human A3 adenosine receptor ligands based on the 3-thiophenylcoumarin core. Med Chem Commun 2016. [DOI: 10.1039/c5md00573f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
3-Thiophenylcoumarins are described as adenosine receptor ligands. Synthesis, in vitro pharmacological assays and docking studies were performed.
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Fonseca A, Matos MJ, Reis J, Duarte Y, Gutiérrez M, Santana L, Uriarte E, Borges F. Exploring coumarin potentialities: development of new enzymatic inhibitors based on the 6-methyl-3-carboxamidocoumarin scaffold. RSC Adv 2016. [DOI: 10.1039/c6ra05262b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Novel 6-methyl-3-carboxamidocoumarins were synthesized by an effective three step synthetic strategy and screened towards MAO, AChE and BuChE enzymes.
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Affiliation(s)
- A. Fonseca
- CIQUP/Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- Porto
- Portugal
| | - M. J. Matos
- CIQUP/Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- Porto
- Portugal
| | - J. Reis
- CIQUP/Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- Porto
- Portugal
| | - Y. Duarte
- Laboratorio de Síntesis Orgánica
- Instituto de Química de Recursos Naturales Universidad de Talca
- Talca
- Chile
| | - M. Gutiérrez
- Laboratorio de Síntesis Orgánica
- Instituto de Química de Recursos Naturales Universidad de Talca
- Talca
- Chile
| | - L. Santana
- Departamento de Química Orgánica
- Faculdade de Farmacia
- Universidade de Santiago de Compostela
- Santiago de Compostela
- Spain
| | - E. Uriarte
- Departamento de Química Orgánica
- Faculdade de Farmacia
- Universidade de Santiago de Compostela
- Santiago de Compostela
- Spain
| | - F. Borges
- CIQUP/Departamento de Química e Bioquímica
- Faculdade de Ciências
- Universidade do Porto
- Porto
- Portugal
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Madama D, Silva A, Matos MJ. Overlap syndrome--Asthma and obstructive sleep apnea. Rev Port Pneumol (2006) 2015; 22:6-10. [PMID: 26603307 DOI: 10.1016/j.rppnen.2015.08.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 08/13/2015] [Accepted: 08/14/2015] [Indexed: 11/29/2022] Open
Abstract
INTRODUCTION Asthma is a chronic inflammatory disease with multiple phenotypes. There is still a major gap in the understanding of its complex causality. Obstructive sleep apnea (OSA) is a common condition that has been implicated as a risk factor for asthma exacerbations. OBJECTIVES This study aims to characterize patients with the diagnosis of asthma and suspected OSA; identify the presence of OSA and review, on the current literature, the association between asthma and OSA, as an overlap syndrome. MATERIALS AND METHODS The authors present a retrospective study that included patients diagnosed with asthma that underwent sleep study in a 3 year period. Demographic, clinical data, body mass index (BMI), sleep study parameters and treatments were analyzed. RESULTS The sample consisted of 47 patients. The majority of population was females (68%) and the mean age was 55.65 ± 13.04 years. The most common nighttime symptom was snoring (93.6%). Regarding BMI, values above the normal limit were observed in 89.36% of the patients. 68% underwent polysomnography and the others cardiorespiratory polygraphy. In 57.4% of the patients, OSA was confirmed with a higher prevalence in males (73.3%) compared to females (50%). The therapeutic approach in 81.8% of these patients was home ventilation therapy. CONCLUSION The combination of asthma and OSA has become increasingly more frequent. In the described study, the prevalence of OSA was 57.4%, value that is in fact higher than in general population. After the therapeutic approach, all patients referred improvement of symptoms. It is therefore essential that OSA is investigated in patients with asthma when there is poor control of symptoms, in order to achieve a better control.
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Affiliation(s)
- D Madama
- Pulmonology Department, Coimbra Hospital and University Centre, Portugal.
| | - A Silva
- Pulmonology Department, Coimbra Hospital and University Centre, Portugal
| | - M J Matos
- Pulmonology Department, Coimbra Hospital and University Centre, Portugal
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Matos P, Fradinho F, Catarino A, Lopes P, Matos MJ. Positional sleep apnea: An issue of therapeutic adherence. Rev Port Pneumol (2006) 2015; 21:S2173-5115(15)00137-2. [PMID: 26321164 DOI: 10.1016/j.rppnen.2015.07.005] [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] [Received: 06/05/2015] [Revised: 07/17/2015] [Accepted: 07/25/2015] [Indexed: 11/19/2022] Open
Affiliation(s)
- P Matos
- Pulmonology Department, Sleep Laboratory, HUC-CHUC, Coimbra, Portugal.
| | - F Fradinho
- Pulmonology Department, Sleep Laboratory, HUC-CHUC, Coimbra, Portugal
| | - A Catarino
- Pulmonology Department, Sleep Laboratory, HUC-CHUC, Coimbra, Portugal
| | - P Lopes
- Pulmonology Department, Sleep Laboratory, HUC-CHUC, Coimbra, Portugal
| | - M J Matos
- Pulmonology Department, Sleep Laboratory, HUC-CHUC, Coimbra, Portugal
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Madama D, Matos P, Franco A, Matos MJ, Carvalho L. Adult bronchiolitis--a clinical and pathological interpretative classification. Rev Port Pneumol (2006) 2015; 22:93-100. [PMID: 26242688 DOI: 10.1016/j.rppnen.2015.06.008] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Revised: 06/08/2015] [Accepted: 06/08/2015] [Indexed: 11/16/2022] Open
Abstract
INTRODUCTION Bronchiolitis is a heterogeneous group of diseases of an inflammatory nature, centered on small conducting airways and often associated with other pulmonary disorders. No single classification scheme for bronchiolar diseases has been widely accepted. In this retrospective study, it was decided to apply a new clinical and pathological interpretative classification. OBJECTIVES To propose a new clinical and pathological interpretative classification for adult bronchiolitis, based on statistical analysis of a population of 193 patients with histopathological diagnosis of bronchiolitis. MATERIALS AND METHODS A retrospective study analyzed the epidemiological characteristics, co-morbidities and radiological findings present in a group of patients with histopathological diagnosis of bronchiolitis. RESULTS This trial involved 193 cases collected over a period of eleven years; 48 (24.9%) patients had simultaneous pulmonary disease; non-pulmonary diseases, such as cardiovascular diseases, type II Diabetes mellitus and dyslipidemia were present in 57 cases. The image study was extremely important in order to integrate clinical and pathological aspects. In this study respiratory bronchiolitis related to smoking dominated. The radiological findings confirmed the secondary nature of the histopathological features, with prevalence of ground-glass patterns, pneumothorax and patterns of interstitial involvement, as described in the literature. It was also verified that clinical behavior of different forms of bronchiolitis was important to distinguish the various types, since they could progress without typical anatomopathological aspects. CONCLUSION This trial showed that the vast majority of diagnosis obtained corresponded to bronchiolitis as secondary to pulmonary pathology. In most cases, morphological findings had to be complemented with clinical and radiological characteristics, in order to obtain the final diagnosis.
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Affiliation(s)
- D Madama
- Department of Pulmonology of the University Hospitals of Coimbra - Coimbra University Hospital Centre, Coimbra, Portugal.
| | - P Matos
- Department of Pulmonology of the University Hospitals of Coimbra - Coimbra University Hospital Centre, Coimbra, Portugal
| | - A Franco
- Department of Pulmonology of the University Hospitals of Coimbra - Coimbra University Hospital Centre, Coimbra, Portugal
| | - M J Matos
- Department of Pulmonology of the University Hospitals of Coimbra - Coimbra University Hospital Centre, Coimbra, Portugal
| | - L Carvalho
- Department of Pathology of the University Hospital of Coimbra - Coimbra University Hospital Centre, Coimbra, Portugal
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Tavares e Castro A, Matos P, Tavares B, Matos MJ, Segorbe-Luís A. Alternative functional criteria to assess airflow-limitation reversibility in asthma. Rev Port Pneumol (2006) 2015; 21:69-75. [PMID: 25926369 DOI: 10.1016/j.rppnen.2014.08.002] [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] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/05/2014] [Indexed: 10/24/2022] Open
Abstract
INTRODUCTION International guidelines define significant bronchodilator response as absolute and percentage change from baseline in forced expiratory volume (FEV1) in the first second and/or forced vital capacity (FVC) ≥12% and 200 mL. However, bronchodilator effects on other lung function parameters have also been correlated to some degree of reversible airflow limitation. OBJECTIVES To determine whether changes in other lung function parameters apart from FEV1 and FVC detect functional responses to bronchodilator in asthmatic patients. MATERIALS AND METHODS Spirometry and body plethysmography were performed at baseline conditions and after administration of 400 μg of salbutamol by metered-dose inhaler through a space chamber device in asthmatic patients. Paired t-tests were used to compare lung function parameters between those with and without criteria for reversibility of airway obstruction according to ATS/ERS criteria. Cut-off values were obtained from the corresponding ROC curves. Measurements evaluated were FEV1, FVC, maximum mid-forced expiratory flow (FEF25-75%), residual volume (RV), inspiratory capacity (IC), airway resistance (Raw) and specific airway conductance (sGaw). RESULTS From a total of 100 consecutive asthmatics patients (46% of them men; average age 58.7±14.1 years; 76% with mild to moderate obstruction), 50 patients had a significant bronchodilator response. All of these had noteworthy variations (p<0.004) in PEF, FEF25-75%, RV, Raw and sGaw. The most accurate in predicting a significant bronchodilator response were the absolute and percentage improvements in PEF (≥0.4 L/s and 8%), FEF25-75% (≥0.087 L/s and 27%) and the percentage of sGaw compared with that at baseline (≥25%). Based on these cut-off values, a sizeable number of the patients defined as non-responders had important changes in airway caliber. 17 patients had significant increments in the percentage of PEF and 10 had changes in absolute volume; 6 patients had increments in percentage and 16 in absolute change of FEF25-75%; 22 patients had increments in the percentage change of sGaw. CONCLUSIONS Changes of FEV1 and/or FVC may underestimate significant functional response to bronchodilators in asthmatic patients with airway obstruction when considering the change in other lung function parameters.
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Affiliation(s)
- A Tavares e Castro
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal.
| | - P Matos
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
| | - B Tavares
- Immunoallergology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
| | - M J Matos
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
| | - A Segorbe-Luís
- Immunoallergology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
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Matos MJ, Varela C, Vilar S, Hripcsak G, Borges F, Santana L, Uriarte E, Fais A, Di Petrillo A, Pintus F, Era B. Design and discovery of tyrosinase inhibitors based on a coumarin scaffold. RSC Adv 2015. [DOI: 10.1039/c5ra14465e] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel series of 3-aryl and 3-heteroarylcoumarins displaying tyrosinase inhibitory activity.
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Tavares E Castro A, Matos P, Tavares B, Matos MJ, Segorbe-Luís A. WITHDRAWN: Alternative functional criteria to assess airflow-limitation reversibility in asthma. Rev Port Pneumol 2014:S0873-2159(14)00146-9. [PMID: 25445252 DOI: 10.1016/j.rppneu.2014.08.003] [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] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 07/08/2014] [Accepted: 08/05/2014] [Indexed: 11/24/2022] Open
Abstract
This article has been withdrawn for editorial reasons because the journal will be published only in English. In order to avoid duplicated records, this article can be found at http://dx.doi.org/10.1016/j.rppnen.2014.08.002. The Publisher apologizes for any inconvenience this may cause. The full Elsevier Policy on Article Withdrawal can be found at http://www.elsevier.com/locate/withdrawalpolicy.
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Affiliation(s)
- A Tavares E Castro
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal.
| | - P Matos
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
| | - B Tavares
- Immunoallergology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
| | - M J Matos
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
| | - A Segorbe-Luís
- Immunoallergology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar Universitário de Coimbra, Coimbra, Portugal
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Tavares e Castro A, Duarte JC, Cravo J, Freitas S, Matos MJ. Obstructive sleep apnea in women: Prevalence, risk factors and relation to menopausal status. Rev Port Pneumol 2014; 20:342-3. [PMID: 25283133 DOI: 10.1016/j.rppneu.2014.07.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 07/02/2014] [Accepted: 07/08/2014] [Indexed: 11/26/2022] Open
Affiliation(s)
- A Tavares e Castro
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal.
| | - J C Duarte
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - J Cravo
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - S Freitas
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - M J Matos
- Pulmonology Unit, Hospitais da Universidade de Coimbra, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
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Matos MJ, Jenni S, Fischer N, Bienz H, Glaus MT. Myokardschädigung und Paroxysmale Ventrikuläre Tachykardie bei einem Hund nach Albuterolintoxikation. SCHWEIZ ARCH TIERH 2013; 154:302-5. [DOI: 10.1024/0036-7281/a000350] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Freitas P, Carvalho D, Santos AC, Matos MJ, Madureira AJ, Marques R, Martinez E, Sarmento A, Medina JL. Prevalence of obesity and its relationship to clinical lipodystrophy in HIV-infected adults on anti-retroviral therapy. J Endocrinol Invest 2012; 35:964-70. [PMID: 22186163 DOI: 10.3275/8187] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
BACKGROUND Combination antiretroviral therapy (cART) is associated with lipodystrophy (lipoatrophy and lipoaccumulation) and several metabolic abnormalities that together can contribute to an increased cardiovascular risk. The aim of this study was to evaluate the prevalence of obesity in patients on cART according to the presence of clinical lipodystrophy (CL) and to analyze factors associated with obesity. METHODS We evaluated 368 HIV-infected adults on cART. RESULTS CL was present in 59.0%. Independently of gender, patients with CL were more frequently underweight [5.7% (21/368)] and of normal weight [47.3% (174/368)], and less frequently overweight [33.2% (122/368)] or obese [13.9% (51/368)]. Mean body mass index was higher in patients with abdominal prominence regardless of the presence of clinical lipoatrophy. Patients with CL had lower waist circumference, higher waist/hip and fat mass ratio and lower total and subcutaneous fat, without significant difference in visceral fat but with a higher visceral/subcutaneous fat ratio, as evaluated by CT at abdominal level. CL was significantly less frequent in overweight [odds ratio (OR)=0.21, 95% confidence interval (CI): 0.05-0.92] and obese (OR=0.05, 95%CI: 0.01-0.26) patients, when compared to underweight ones, independent of age, gender, duration of infection, cART regimen, virological suppression, and HIV-infection risk factor. CONCLUSIONS Being overweight or obese is highly prevalent in HIV-infected patients on cART. Patients with CL were more frequently under- or normal weight, and less frequently overweight or obese. Obesity is a condition that should be considered in HIV patients on cART.
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Affiliation(s)
- P Freitas
- Department of Endocrinology, Hospital de São João and University of Porto Medical School, Alameda Hernâni Monteiro, Porto, Portugal.
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Cordeirol CR, Freitas S, Rodrigues B, Catarino A, Matos MJ, Ferreira I, Carvalho L. Diagnosis of respiratory bronchiolitis associated interstitial lung disease. Monaldi Arch Chest Dis 2006; 65:96-101. [PMID: 16913580 DOI: 10.4081/monaldi.2006.571] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Respiratory Bronchiolitis (RB), described by Niewoehner et al in 1974, is a common finding in heavy smokers and is characterised by the presence of pigmented macrophages within respiratory bronchioles and adjacent alveoli. In the 1980s, Myers et al described RB associated with interstitial lung disease (RBILD), which is a rare entity expressed as an amplified respiratory bronchiolitis in response to cigarette smoke. METHODS The authors studied a group of 8 patients with biopsy-proven RBILD diagnosed within the last five years, and assessed epidemiological data, clinical and imaging features, lung function tests, bronchoalveolar lavage findings, therapeutic approaches and clinical evolution. RESULTS AND CONCLUSIONS The most difficult differential diagnosis is between RBILD and Desquamative Interstitial Pneumonia (DIP), which seems to suggest that these disorders are either end of the same spectrum, although the authors claim that there are some clinical, morphological and prognostic distinctions. The diagnosis of RBILD requires an appropriate clinical setting (including smoking habits), characteristic image findings (like ground glass shadowing and centrilobular nodules), and Bronchoalveolar Lavage (BAL) data to exclude other diagnosis. Pathological confirmation may also be important, not only to exclude more adverse interstitial lung disease, such as idiopathic pulmonary fibrosis, but also, as in the eight cases presented, to illustrate some specific features such as the prevalence of lymphocytosis in BAL.
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Affiliation(s)
- C Robalo Cordeirol
- Department of Pneumology and Allergology, University Hospital of Coimbra, 3000 Coimbra, Portugal.
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Abstract
OBJECTIVE The incidence of bronchiectasis has declined markedly in developed countries. However, a reasonable number of patients still need surgery, despite aggressive physiotherapy and antibiotic therapy. We have reviewed our patients to clarify the benefits from surgery and to analyse the complications. MATERIAL AND METHODS Between 1988 and 1999, we have operated on 119 patients with bronchiectasis, 71 female and 48 male, with a mean age of 42.2 years (range 11--77 years). Surgery was indicated because of unsuccessful medical therapy in 66 patients (55%), 31 (26%) had haemoptysis, 11 (9.2%) had lung abscess, 10 (8.4%) had lung masses, and three (2.5%) had pneumothorax. The most common manifestations were cough with sputum in 90 patients (76%), haemoptysis in 45 (38%) and recurrent infections in 57 (48%). The mean duration of the symptoms was 4 years (range 1--40 years). The lower lobes were diseased in 61 patients and bilateral disease was found in ten. The mean number of involved pulmonary segments was five (range 1-15). A lobectomy was performed in 75 patients (62%), a segmentectomy in 12 (10%), a pneumonectomy in nine (7.4%) and a bilobectomy in four (3.3%). Complete resection of the disease was achieved in 108 cases (91%). RESULTS There was no operative mortality and perioperative morbidity occurred in 15 patients (15%), including temporary broncho-pleural fistulae in 7 (5.8%), and post-operative haemorrhage and atrial arrhythmias in four (3.3%) each. After a mean follow-up was 4.5 years, 73 patients (68%) of this group were asymptomatic, and 31 (29%) had meaningful clinical improvement, while only four (3.7%) maintained or worsened prior symptoms. The best clinical improvement occurred in patients with complete resection of the disease (P=0.008). There were no differences in the respiratory function, comparing pre- and post-operative data, with a 2-year of minimum interval. The VC was 91 and 89% and the FEV1 was 83% and 81% of expected, respectively before and after surgery, (P=NS). CONCLUSION Surgery of pulmonary bronchiectasis has few complications and markedly improves symptoms in the great majority of patients, especially when complete resection of the disease is achieved. Pulmonary resection of bronchiectasis does not alter respiratory function.
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Affiliation(s)
- D Prieto
- Cardiothoracic Surgery, University Hospital, Coimbra, Portugal
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Santos MS, Duarte AI, Matos MJ, Proença T, Seiça R, Oliveira CR. Synaptosomes isolated from Goto-Kakizaki diabetic rat brain exhibit increased resistance to oxidative stress: role of vitamin E. Life Sci 2000; 67:3061-73. [PMID: 11125843 DOI: 10.1016/s0024-3205(00)00892-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [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: 11/23/2022]
Abstract
Increased oxidative stress is believed to be an important factor in the development of diabetic complications. In this study, the effect of diabetes on the susceptibility of synaptosomes to oxidative stress, induced by the oxidizing system ascorbate/Fe2+, on the activity of antioxidant enzymes and on the levels of glutathione and vitamin E was investigated. Synaptosomes were isolated from brain of 29-weeks-old Goto-Kakizaki (GK) rats, a model of non-insulin dependent diabetes mellitus and from normal Wistar rats. Synaptosomes isolated from GK rats displayed a lower susceptibility to lipid peroxidation, as assessed by quantifying thiobarbituric acid reactive substances (TBARS), than normal rats (5.33 +/- 0.79 and 7.58 +/- 0.7 nmol TBARS/mg protein, respectively). In the absence of oxidants, no significant differences were found between the levels of peroxidation in synaptosomes of diabetic or control rats. Superoxide dismutase (SOD), glutathione peroxidase and glutathione reductase activities were unaltered in the brain of diabetic rats. There were no statistically significant differences in fatty acid composition of total lipids and reduced glutathione levels in synaptosomes of diabetic and control rats. The decreased susceptibility to membrane lipid peroxidation of diabetic rats synaptosomes correlated with a 1.3-fold increase in synaptosomal vitamin E levels. Vitamin E levels in plasma were also higher in diabetic rats (21.32 micromol/l) as compared to normal rats (15.13 micromol/l). We conclude that the increased resistance to lipid peroxidation in GK rat brain synaptosomes may be due to the increased vitamin E content, suggesting that diabetic animals might develop enhanced defense systems against brain oxidative stress.
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Affiliation(s)
- M S Santos
- Department of Zoology, Center for Neurosciences of Coimbra, University of Coimbra, Portugal
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Rosa SM, Antunes-Madeira MC, Matos MJ, Jurado AS, Madeira VM. Lipid composition and dynamics of cell membranes of Bacillus stearothermophilus adapted to amiodarone. Biochim Biophys Acta 2000; 1487:286-95. [PMID: 11018480 DOI: 10.1016/s1388-1981(00)00122-0] [Citation(s) in RCA: 16] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Bacillus stearothermophilus, a useful model to evaluate membrane interactions of lipophilic drugs, adapts to the presence of amiodarone in the growth medium. Drug concentrations in the range of 1-2 microM depress growth and 3 microM completely suppresses growth. Adaptation to the presence of amiodarone is reflected in lipid composition changes either in the phospholipid classes or in the acyl chain moieties. Significant changes are observed at 2 microM and expressed by a decrease of phosphatidylethanolamine (relative decrease of 23.3%) and phosphatidylglycerol (17.9%) and by the increase of phosphoglycolipid (162%). The changes in phospholipid acyl chains are expressed by a decrease of straight-chain saturated fatty acids (relative decrease of 12.2%) and anteiso-acids (22%) with a parallel increase of the iso-acids (9.8%). Consequently, the ratio straight-chain/branched iso-chain fatty acids decreases from 0. 38 (control cultures) to 0.30 (cultures adapted to 2 microM amiodarone). The physical consequences of the lipid composition changes induced by the drug were studied by fluorescence polarization of diphenylhexatriene and diphenylhexatriene-propionic acid, and by differential scanning calorimetry. The thermotropic profiles of polar lipid dispersions of amiodarone-adapted cells are more similar to control cultures (without amiodarone) than those resulting from a direct interaction of the drug with lipids, i.e., when amiodarone was added directly to liposome suspensions. It is suggested that lipid composition changes promoted by amiodarone occur as adaptations to drug tolerance, providing the membrane with physico-chemical properties compatible with membrane function, counteracting the effects of the drug.
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Affiliation(s)
- S M Rosa
- Centron de Neurociências, Departamento de Bioquímica, Universidade de Coimbra, Coimbra, Portugal
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Ferreira FM, Palmeira CM, Matos MJ, Seiça R, Santos MS. Decreased susceptibility to lipid peroxidation of Goto-Kakizaki rats: relationship to mitochondrial antioxidant capacity. Life Sci 1999; 65:1013-25. [PMID: 10499869 DOI: 10.1016/s0024-3205(99)00332-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [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: 11/20/2022]
Abstract
The respiratory function and the antioxidant capacity of liver mitochondrial preparations isolated from Goto-Kakizaki non-insulin dependent diabetic rats and from Wistar control rats, with the age of 6 months, were compared. It was found that Goto-Kakizaki mitochondrial preparations presented a higher coupling between oxidative and phosphorylative systems, compared to non-diabetic preparations. Goto-Kakizaki mitochondria presented a lower susceptibility to lipid peroxidation induced by ADP/Fe2+, as evaluated by the formation of thiobarbituric acid substances. The decreased susceptibility to peroxidation in diabetic rats was correlated with an increase in mitochondrial vitamin E (alpha-tocopherol) content and GSH/GSSG ratio. Moreover, the glutathione reductase activity was significantly increased, whereas the glutathione peroxidase was decreased. Superoxide dismutase activity was unchanged in diabetic rats. Fatty acid analyses showed that the content in polyunsaturated fatty acids of Goto-Kakizaki mitochondrial membranes was significantly higher compared to controls. These results indicate that the lower susceptibility to lipid peroxidation of mitochondria from diabetic rats was related to their antioxidant defense systems, and may correspond to an adaptative response of the cells against oxidative stress in the early phase of diabetes.
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Affiliation(s)
- F M Ferreira
- Center for Neurosciences of Coimbra, Department of Zoology, University of Coimbra, Portugal.
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Lopes EB, Matos MJ, Henriques RT, Almeida M, Dumas J. Charge-density-wave dynamics in the molecular conductor (perylene)2Pt(mnt)2 (mnt=maleonitriledithiolate). Phys Rev B Condens Matter 1995; 52:R2237-R2240. [PMID: 9981380 DOI: 10.1103/physrevb.52.r2237] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Dumas J, Thirion N, Almeida M, Lopes EB, Matos MJ, Henriques RT. Wave Analysis of the Charge Density Wave Dynamics in the Molecular Conductor
(Perylene)2Pt(mnt)2 (mnt=maleonitriledithiolate). ACTA ACUST UNITED AC 1995. [DOI: 10.1051/jp1:1995149] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Matos MJ, Post JA, Roelofsen B, Op den Kamp JA. Composition and organization of sarcolemmal fatty acids in cultured neonatal rat cardiomyocytes. Cell Biol Int Rep 1990; 14:343-52. [PMID: 2285431 DOI: 10.1016/0309-1651(90)91203-g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This paper describes studies on the fatty acid composition of individual phospholipids of the neonatal rat cardiomyocyte as well as in the gas-dissected sarcolemma derived from those cells. There is a sarcolemmal fatty acid asymmetry between the two leaflets of the membrane, which results from an asymmetric phospholipid distribution and particular fatty acid composition of each phospholipid class. The cytoplasmic leaflet is shown to be more unsaturated than the outer one. The phospholipids preferring the inner sarcolemmal leaflet (PE, PS, and PI) are particularly rich in two fatty acids, stearic acid and arachidonic acid. The implications of the data in current models for Ca2+ binding and for disruption of sarcolemma following ischemia and reperfusion damage are discussed.
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Affiliation(s)
- M J Matos
- Centre for Biomembranes and Lipid Enzymology, University of Utrecht, NL
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Coito R, Matos MJ. [Psychiatry and theatre]. Rev Enferm (Lisboa) 1966; 5:199-206. [PMID: 5181410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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