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Ferreira IL, Costa S, Moraes BJ, Costa A, Fokt O, Marinho D, Alves V, Baptista IP, Rego AC. Mitochondrial and Redox Changes in Periodontitis and Type 2 Diabetes Human Blood Mononuclear Cells. Antioxidants (Basel) 2023; 12:antiox12020226. [PMID: 36829785 PMCID: PMC9952049 DOI: 10.3390/antiox12020226] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
Periodontitis (PDT) and type 2 diabetes (T2D) have demonstrated a bidirectional relationship and imbalanced oxidative stress linked to mitochondrial dysfunction. Therefore, we investigated mitochondrial and redox (de)regulation in peripheral blood mononuclear cells (PBMCs) in comorbid T2D-PDT, compared to PDT, T2D patients, and control individuals. PBMCs were analyzed for mitochondrial respiration, reactive oxygen species, antioxidant proteins, and expression of Nrf2-target genes. PDT and T2D-PDT patients exhibited altered periodontal clinical markers, while T2D and T2D-PDT patients displayed increased blood HbA1c. Decreased oxygen consumption and ATP production were observed in the PDT patient's PBMCs. PDT and T2D-PDT PBMCs also evidenced increased H2O2 levels and reduced catalase levels (also detected in T2D patients), whereas a compromised glutathione cycle was observed in T2D-PDT patients. PBMCs from both T2D or T2D-PDT patients showed increased Nrf2 protein levels, enhanced GCL activity and GCL-catalytic subunit protein levels, and maintained GCLc, GST, and HO-1 mRNA levels. In contrast, the expressions of Nrf2-target genes were significantly diminished in the PDT patient's PBMCs. Decreased SOD1 and GST mRNA levels were also observed in CD3+CD8+-lymphocytes derived from PDT and T2D-PDT patients. In conclusion, PBMCs from T2D-PDT patients showed major redox changes, while mononuclear cells from PDT patients showed mitochondrial deregulation and reduced expression of Nrf2-target genes.
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Affiliation(s)
- Ildete L. Ferreira
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
- IIIUC—Institute for Interdisciplinary Research, University of Coimbra, 3030-789 Coimbra, Portugal
| | - Solange Costa
- Institute of Periodontology, Dentistry Department, Faculty of Medicine, University of Coimbra, Avenida Bissaya Barreto, 3000-075 Coimbra, Portugal
| | - Bruno J. Moraes
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
| | - Ana Costa
- Institute of Periodontology, Dentistry Department, Faculty of Medicine, University of Coimbra, Avenida Bissaya Barreto, 3000-075 Coimbra, Portugal
| | - Olga Fokt
- Institute of Periodontology, Dentistry Department, Faculty of Medicine, University of Coimbra, Avenida Bissaya Barreto, 3000-075 Coimbra, Portugal
| | - Daniela Marinho
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
- IIIUC—Institute for Interdisciplinary Research, University of Coimbra, 3030-789 Coimbra, Portugal
| | - Vera Alves
- Institute of Immunology, Faculty of Medicine, University of Coimbra, 3004-504 Coimbra, Portugal
- Coimbra Institute for Clinical and Biomedical Research (iCBR), Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Isabel P. Baptista
- Institute of Periodontology, Dentistry Department, Faculty of Medicine, University of Coimbra, Avenida Bissaya Barreto, 3000-075 Coimbra, Portugal
- Correspondence: (I.P.B.); or (A.C.R.); Tel.: +351-239-820190 (A.C.R.); Fax: +351-239-822776 (A.C.R.)
| | - A. Cristina Rego
- CNC—Center for Neuroscience and Cell Biology, University of Coimbra, 3004-504 Coimbra, Portugal
- Institute of Biochemistry, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Correspondence: (I.P.B.); or (A.C.R.); Tel.: +351-239-820190 (A.C.R.); Fax: +351-239-822776 (A.C.R.)
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Silva I, Szmul A, Cantwell J, Lim P, D’Souza D, Moinuddin S, Alves V, Gains J, Veiga C. PO-1616 Evaluation of deep learning-based OAR segmentation in paediatric radiotherapy settings. Radiother Oncol 2022. [DOI: 10.1016/s0167-8140(22)03580-0] [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: 11/28/2022]
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Jesus D, Larosa M, Henriques C, Matos A, Zen M, Tomé P, Alves V, Costa N, Le Guern V, Iaccarino L, Costedoat-Chalumeau N, Doria A, Inês L. OP0297 THE SLE-DAS ENABLES ACCURATE AND USER-FRIENDLY DEFINITIONS OF REMISSION AND CATEGORIES OF LUPUS DISEASE ACTIVITY: DERIVATION AND VALIDATION STUDY IN 1190 SLE PATIENTS. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.1677] [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] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Treatment of systemic lupus erythematosus (SLE) is tailored according to the intensity of SLE disease activity and aims to achieve remission. Current definitions of remission and disease activity categories are mostly based on the SLE Disease Activity Index (SLEDAI), which has important limitations. The SLE Disease Activity Score (SLE-DAS) is a validated continuous disease activity score with higher accuracy in measuring SLE activity and higher sensitivity-to-change as compared to SLEDAI1. SLE-DAS is user-friendly with its online calculator.Objectives:To derive and validate the SLE-DAS cut-off values for defining SLE disease activity categories and SLE clinical remission state.Methods:Derivation study was conducted at the Padova Lupus Clinic. Validation was performed prospectively in patients from the Cochin Lupus Clinic and by post-hoc analysis of BLISS-76 (NCT00410384) trial. Gold-standard for clinical remission state was fulfillment of Definition Of Remission In SLE (DORIS). In Padova and Cochin Clinics, at time of inclusion, a senior clinician classified each patient as presenting: (i) remission, (ii) mild, or (iii) moderate/severe disease activity. Derivation of the SLE-DAS cut-offs for disease activity categories was performed using ROC curve analysis against this expert clinical classification. Performance of these SLE-DAS categories of disease activity was assessed as compared with: (i) expert classification (in Cochin cohort); (ii) British Isles Lupus Assessment Group (BILAG) index (in BLISS-76). An index-based and a Boolean definition of remission were tested applying decision trees, using CHAID (chi-square automatic interaction detection) algorithm and their performance estimated.Results:We included 1190 SLE patients (221 in Padova, 150 in Cochin and 819 from BLISS-76 cohorts). In the derivation cohort, best SLE-DAS cut-off values for disease activity categories were: (i) remission, SLE-DAS≤2.08; (ii) mild activity, 2.08<SLE-DAS≤7.10; (iii) moderate/severe activity, SLE-DAS>7.10. Table 1 shows the performance of these SLE-DAS cut-offs. The SLE-DAS Boolean-based definition of remission (all SLE-DAS clinical items scores = 0 and prednisone ≤5mg/day) showed sensitivity and specificity of 100% in the derivation (Padova) and validation (Cochin) clinical cohorts. The SLE-DAS index-based definition of remission (SLE-DAS ≤2.08 and prednisone ≤5mg/day) presented sensitivity =100% and specificity =97.4% in the derivation and validation clinical cohorts. The SLE-DAS definitions of remission were fully substantiated by CHAID.Table 1.Performance of SLE-DAS cut-offs for remission and disease activity categories compared to physician’s classification and BILAG (n =1190).Disease activity categorySensitivity (%)Specificity (%)Accuracy (%)DerivationPadova CohortRemission(SLE-DAS≤2.08)99.397.198.6Mild Disease Activity(2.08<SLE-DAS≤7.10)74.298.995.5Moderate and Severe Disease Activity(SLE-DAS>7.10)97.496.796.8ValidationCochin CohortRemission(SLE-DAS≤2.08)99.193.998.0Mild Disease Activity(2.08<SLE-DAS≤7.10)82.699.296.7Moderate and Severe Disease Activity(SLE-DAS>7.10)100.098.698.7ValidationBLISS-76Remission and Mild Disease Activity§vs. Moderate and Severe Disease Activity§§ (SLE-DAS≤7.10 vs. >7.10)91.484.190.8§ Remission/Mild: No BILAG B or A scores§§ Moderate/severe: ≥1 BILAG B or A scoresConclusion:The SLE-DAS is an accurate and easy to use tool for defining clinical remission state and SLE disease activity categories, validated with both the expert assessment and BILAG.References:[1]Jesus D, et al. Derivation and validation of the SLE Disease Activity Score (SLE-DAS): a new SLE continuous measure with high sensitivity for changes in disease activity. Ann Rheum Dis 2019;78:365-71.Acknowledgements:The authors would like to thank GlaxoSmithKline (Uxbridge, UK) for granting access to the data from the BLISS-76 trial through the Clinical Study Data Request consortium.Disclosure of Interests:None declared
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Mendes J, Rodrigues-Santos P, Areia AL, Almeida JS, Alves V, Santos-Rosa M, Mota-Pinto A. Type 2 and type 3 innate lymphoid cells at the maternal-fetal interface: implications in preterm birth. BMC Immunol 2021; 22:28. [PMID: 33957866 PMCID: PMC8101215 DOI: 10.1186/s12865-021-00423-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Accepted: 04/27/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND Preterm birth (PTB) is one of the major causes of neonatal morbidity and mortality worldwide. It is commonly accepted that the act of giving birth is the final step in a proinflammatory signaling cascade, orchestrated by an intrauterine milieu coupled to hormonal cues. Consequently, the inflammatory process plays a pivotal role during the pathogenesis of human labor, both in term and preterm deliveries. The ability of innate lymphoid cells (ILCs) to act as pro-inflammatory mediators arose the interest to study their role in normal and pathological pregnancies. The aim of this work was to analyze the relative frequencies of ILCs subsets in pregnancy and the levels of IL-4, IL-17, IL-22, and IFN-γ as inflammatory mediators. Accordingly, we hypothesized that changes in the proportions of ILCs subpopulations could be related to preterm birth. METHODS We analyzed 15 full-term delivery samples and six preterm delivery samples. In the full-term group (FTB) peripheral blood was taken during routine blood analysis, on 3 occasions: 1st, 2nd and 3rd trimester. After delivery, peripheral blood, cord blood and placenta were collected. In PTB group, peripheral blood samples were obtained on two occasions: before and 24 h after treatment with progesterone. We used flow cytometry to analyze ILCs in maternal peripheral blood, placenta, and cord blood samples. Maternal peripheral blood and cord blood samples were analyzed by enzyme-linked immunosorbent assay for IL-4, IL-17, IL-22, and IFN-γ plasma levels at the time of labor. RESULTS We observed significantly increased relative frequencies of ILC2 and ILC3 in the decidua, as well as an increase of ILC2 in cord blood samples in PTB group, compared to FTB samples. We also found a decrease in IFN-γ in peripheral blood samples of the PTB group, suggesting a functional withdrawal. Additionally, IL-4, IL-17, IL-22 levels were similar in PTB and FTB groups, denoting a relevant role in mediating labor. CONCLUSION Our results suggest that ILC2 and ILC3 play a role in PTB by mediating an inflammatory response. Further work is necessary to evaluate the importance of ILCs in the regulation of labor.
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Affiliation(s)
- João Mendes
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Polo III - Health Sciences Campus, Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Apartado 9015, 3001-301 Coimbra, Portugal
- General Pathology Institute, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
| | - Paulo Rodrigues-Santos
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Polo III - Health Sciences Campus, Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Apartado 9015, 3001-301 Coimbra, Portugal
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Center for Neuroscience and Cell Biology (CNC), Laboratory of Immunology and Oncology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Center for Innovation in Biomedicine and Biotechnology (CIBB), University of Coimbra, Polo III - Health Sciences Campus Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
| | - Ana Luísa Areia
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Polo III - Health Sciences Campus, Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Apartado 9015, 3001-301 Coimbra, Portugal
- Coimbra Hospital and Universitary Centre (CHUC), Obstetrics Unit, R. Miguel Torga 1, 3030-165 Coimbra, Portugal
| | - Jani-Sofia Almeida
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Polo III - Health Sciences Campus, Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Apartado 9015, 3001-301 Coimbra, Portugal
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Center for Neuroscience and Cell Biology (CNC), Laboratory of Immunology and Oncology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
- Center for Innovation in Biomedicine and Biotechnology (CIBB), University of Coimbra, Polo III - Health Sciences Campus Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
| | - Vera Alves
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Polo III - Health Sciences Campus, Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Apartado 9015, 3001-301 Coimbra, Portugal
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
| | - Manuel Santos-Rosa
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Polo III - Health Sciences Campus, Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Apartado 9015, 3001-301 Coimbra, Portugal
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
| | - Anabela Mota-Pinto
- Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Polo III - Health Sciences Campus, Azinhaga Santa Comba, Celas, 3000-548 Coimbra, Portugal
- Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Apartado 9015, 3001-301 Coimbra, Portugal
- General Pathology Institute, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal
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Alves V, Gonçalves J, Figueira JA, Ornelas LP, Branco RN, Câmara JS, Pereira JAM. Beer volatile fingerprinting at different brewing steps. Food Chem 2020; 326:126856. [PMID: 32450481 DOI: 10.1016/j.foodchem.2020.126856] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 03/28/2020] [Accepted: 04/17/2020] [Indexed: 10/24/2022]
Abstract
Volatile fingerprints of a lager beer were carried out throughout five brewing steps to characterize the changes encompassing this process. Overall, 60 volatile organic metabolites (VOMs) were identified by headspace solid-phase microextraction followed by gas chromatography mass spectrometry (HS-SPME/GC-MS). Specific profiles were observed at different brewing steps - aldehydes and furans dominate in wort, whereas the aliphatic esters and alcohols predominate in the following steps. Such variations can be assigned to specific VOMs, as 3-methylbutanal (wort), ethyl alcohol and ethyl octanoate (fermentation, maturation and filtration), or ethyl alcohol and isoamyl acetate (final product). These VOMs can influence the beer final flavour. Ethyl alcohol contributes to its strong and pungent smell and taste, while isoamyl acetate adds intense 'fruity' and 'banana' odours. These beer volatile fingerprints constitute a valuable tool to obtain insights on the impact of each brewing step on the final product, being also very useful for certification purposes.
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Affiliation(s)
- Vera Alves
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - João Gonçalves
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - José A Figueira
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - Laura P Ornelas
- ECM - Empresa de Cervejas da Madeira, PEZO, Parque Empresarial Zona Oeste, 9304-003 Câmara de Lobos Funchal, Portugal
| | - Ricardo N Branco
- ECM - Empresa de Cervejas da Madeira, PEZO, Parque Empresarial Zona Oeste, 9304-003 Câmara de Lobos Funchal, Portugal
| | - José S Câmara
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal; Departamento de Química, Faculdade de Ciências Exatas e da Engenharia da Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal
| | - Jorge A M Pereira
- CQM - Centro de Química da Madeira, Universidade da Madeira, Campus Universitário da Penteada, 9020-105 Funchal, Portugal.
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Almeida JS, Couceiro P, López-Sejas N, Alves V, Růžičková L, Tarazona R, Solana R, Freitas-Tavares P, Santos-Rosa M, Rodrigues-Santos P. NKT-Like (CD3+CD56+) Cells in Chronic Myeloid Leukemia Patients Treated With Tyrosine Kinase Inhibitors. Front Immunol 2019; 10:2493. [PMID: 31695700 PMCID: PMC6817724 DOI: 10.3389/fimmu.2019.02493] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 10/07/2019] [Indexed: 12/29/2022] Open
Abstract
Therapy with Tyrosine Kinase Inhibitors (TKI) aiming stable deep molecular response is the gold standard to treat Chronic Myeloid Leukemia (CML). NKT-like cells (CD3+CD56+) combine characteristics of T and NK cells. The physiopathological role of these cells remains unknown although the literature refers their association with inflammation, autoimmune diseases, and cancer. Since the information regarding the role of NKT-like cells in CML is rare, we aimed at the characterization of these cells in CML patients treated with TKIs. Peripheral blood NKT-like cells from 48 CML patients and 40 healthy donors were analyzed by multiparametric flow cytometry. Functional tests consisting of co-culture with leukemic target cells (K562 cell line) were used to measure degranulation and cytokine production. Our results revealed that NKT-like cells are decreased in treated CML patients, although they present increased expression of activation markers (CD69 and HLA-DR), increased degranulation (CD107a) and impaired IFN-γ production. Significantly alterations on the expression of tumor recognition (NCRs and NKp80), and immune regulation receptors (LAG-3, TIM-3, and CD137) by NKT-like cells were observed in CML patients. Second generation TKIs increased cell activation (CD69) and decreased expression of NKp44 and NKp80 by NKT-like cells from CML patients when compared to Imatinib. CML patients that achieved deep molecular response (MR4.5) presented downregulation of NKp44 and LAG-3. Further studies are needed to clarify the role of these cells as biomarkers of therapy response and also to evaluate their value for discrimination of better candidates for sustained treatment-free remission after TKI discontinuation.
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Affiliation(s)
- Jani-Sofia Almeida
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Laboratory of Immunology and Oncology, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Center for Innovation in Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
| | - Patrícia Couceiro
- Laboratory of Immunology and Oncology, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Center for Innovation in Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
| | - Nelson López-Sejas
- Department of Immunology, IMIBIC - Reina Sofia University Hospital, University of Cordoba, Córdoba, Spain
| | - Vera Alves
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Center for Innovation in Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
| | - Lenka Růžičková
- Hematology Service, Coimbra Hospital and Universitary Centre (CHUC), Coimbra, Portugal
| | | | - Rafael Solana
- Department of Immunology, IMIBIC - Reina Sofia University Hospital, University of Cordoba, Córdoba, Spain
| | - Paulo Freitas-Tavares
- Hematology Service, Coimbra Hospital and Universitary Centre (CHUC), Coimbra, Portugal
| | - Manuel Santos-Rosa
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Center for Innovation in Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
| | - Paulo Rodrigues-Santos
- Faculty of Medicine (FMUC), Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Laboratory of Immunology and Oncology, Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Coimbra Institute for Clinical and Biomedical Research (iCBR), University of Coimbra, Coimbra, Portugal.,Center for Innovation in Biomedicine and Biotechnology (CIBB), University of Coimbra, Coimbra, Portugal
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Abdallah E, Souzae Silva V, Aguiar S, Takahashi R, Flores B, Braun A, Alves V, Rodríguez Tarazona J, Chinen L, Mello C. Circulating tumor cells levels correlate with carcinoembryonic antigen in patients with high-risk colon cancer who experienced disease progression. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.150] [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: 11/13/2022] Open
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Sobral Torres L, Alves V, Martins E, Oliveira A, Pereira J. P301Diagnostic value of myocardial perfusion SPECT in left bundle branch block and associated artifacts. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez148.029] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- L Sobral Torres
- Centro Hospitalar Universitário São João, EPE, Nuclear Medicine, Porto, Portugal
| | - V Alves
- Centro Hospitalar Universitário São João, EPE, Nuclear Medicine, Porto, Portugal
| | - E Martins
- Centro Hospitalar Universitário São João, EPE, Nuclear Medicine, Porto, Portugal
| | - A Oliveira
- Centro Hospitalar Universitário São João, EPE, Nuclear Medicine, Porto, Portugal
| | - J Pereira
- Centro Hospitalar Universitário São João, EPE, Nuclear Medicine, Porto, Portugal
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Ferreira G, Alves V, Martins E, Pereira J. P286Left ventricular dyssynchrony according to phase analysis from myocardial perfusion imaging in patients with hypertrophic cardiomyopathy. Eur Heart J Cardiovasc Imaging 2019. [DOI: 10.1093/ehjci/jez148.015] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- G Ferreira
- Instituto Português de Oncologia do Porto, Nuclear Medicine, Porto, Portugal
| | - V Alves
- Centro Hospitalar Universitário de S. João, Nuclear Medicine, Porto, Portugal
| | - E Martins
- Centro Hospitalar Universitário de S. João, Nuclear Medicine, Porto, Portugal
| | - J Pereira
- Centro Hospitalar Universitário de S. João, Nuclear Medicine, Porto, Portugal
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Pereira JAM, Gonçalves J, Porto-Figueira P, Figueira JA, Alves V, Perestrelo R, Medina S, Câmara JS. Current trends on microextraction by packed sorbent – fundamentals, application fields, innovative improvements and future applications. Analyst 2019; 144:5048-5074. [DOI: 10.1039/c8an02464b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
MEPS, the acronym of microextraction by packed sorbent, is a simple, fast and user- and environmentally-friendly miniaturization of the popular solid-phase extraction technique (SPE).
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Affiliation(s)
- Jorge A. M. Pereira
- CQM – Centro de Química da Madeira
- Universidade da Madeira
- 9020-105 Funchal
- Portugal
| | - João Gonçalves
- CQM – Centro de Química da Madeira
- Universidade da Madeira
- 9020-105 Funchal
- Portugal
| | | | - José A. Figueira
- CQM – Centro de Química da Madeira
- Universidade da Madeira
- 9020-105 Funchal
- Portugal
| | - Vera Alves
- CQM – Centro de Química da Madeira
- Universidade da Madeira
- 9020-105 Funchal
- Portugal
| | - Rosa Perestrelo
- CQM – Centro de Química da Madeira
- Universidade da Madeira
- 9020-105 Funchal
- Portugal
| | - Sonia Medina
- CQM – Centro de Química da Madeira
- Universidade da Madeira
- 9020-105 Funchal
- Portugal
| | - José S. Câmara
- CQM – Centro de Química da Madeira
- Universidade da Madeira
- 9020-105 Funchal
- Portugal
- Faculdade de Ciências Exatas e da Engenharia
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11
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Rodrigues-Santos P, López-Sejas N, Almeida JS, Ruzičková L, Couceiro P, Alves V, Campos C, Alonso C, Tarazona R, Freitas-Tavares P, Solana R, Santos-Rosa M. Effect of Age on NK Cell Compartment in Chronic Myeloid Leukemia Patients Treated With Tyrosine Kinase Inhibitors. Front Immunol 2018; 9:2587. [PMID: 30487792 PMCID: PMC6246921 DOI: 10.3389/fimmu.2018.02587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 10/19/2018] [Indexed: 12/16/2022] Open
Abstract
Natural killer (NK) cells are a very important component of the innate immune response involved in the lysis of virus infected and tumor cells. Aging has a profound impact in the frequency, phenotype and function of NK cells. Chronic Myeloid Leukemia (CML) is caused by the BCR-ABL gene formation encoding aberrant oncoprotein tyrosine kinase. Treatment with tyrosine kinase inhibitors (TKIs) induces durable deep molecular response. The response to treatment and life expectancy is lower in older patients with chronic phase of CML than in younger patients. In this work we analyse NK cells from TKI-treated CML patients and healthy controls stratified according to age. We have analyzed the expression of NK receptors, activation markers, NK cell differentiation in CD56bright and CD56dim NK cell subsets and the expression of CD107a and IFN-γ in NK cells stimulated with K562. Whereas significant differences on the phenotype and function of NK cells were found between middle-aged (35–65 years old) and elderly (older than 65) healthy individuals, NK cells from TKI-treated CML patients do not show significant differences related with age in most parameters studied, indicating that age is not a limitation of the NK cell recovery after treatment with TKI. Our results also revealed differences in the expression of NK receptors, activation markers and functional assays in NK cells from TKI-treated CML patients compared with age-matched healthy controls. These results highlight the relevance of NK cells in TKI-treated patients and the need of an extensive analysis of the effect of aging on NK cell phenotype and function in these patients in order to define new NK-cell based strategies directed to control CML progression and achieve long-term disease remission after TKI cessation.
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Affiliation(s)
- Paulo Rodrigues-Santos
- Faculty of Medicine, Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Laboratory of Immunology and Oncology, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology - CIMAGO, University of Coimbra, Coimbra, Portugal
| | - Nelson López-Sejas
- Department of Immunology, Instituto Maimónides de Investigación Biomédica de Córdoba - Reina Sofia University Hospital - University of Córdoba, Córdoba, Spain
| | - Jani Sofia Almeida
- Laboratory of Immunology and Oncology, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology - CIMAGO, University of Coimbra, Coimbra, Portugal
| | - Lenka Ruzičková
- Hematology Service, Coimbra Hospital and Universitary Centre, Coimbra, Portugal
| | - Patricia Couceiro
- Laboratory of Immunology and Oncology, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology - CIMAGO, University of Coimbra, Coimbra, Portugal
| | - Vera Alves
- Faculty of Medicine, Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology - CIMAGO, University of Coimbra, Coimbra, Portugal
| | - Carmen Campos
- Department of Immunology, Instituto Maimónides de Investigación Biomédica de Córdoba - Reina Sofia University Hospital - University of Córdoba, Córdoba, Spain
| | - Corona Alonso
- Department of Immunology, Instituto Maimónides de Investigación Biomédica de Córdoba - Reina Sofia University Hospital - University of Córdoba, Córdoba, Spain
| | | | | | - Rafael Solana
- Department of Immunology, Instituto Maimónides de Investigación Biomédica de Córdoba - Reina Sofia University Hospital - University of Córdoba, Córdoba, Spain
| | - Manuel Santos-Rosa
- Faculty of Medicine, Institute of Immunology, University of Coimbra, Coimbra, Portugal.,Faculty of Medicine, Center of Investigation in Environment, Genetics and Oncobiology - CIMAGO, University of Coimbra, Coimbra, Portugal
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12
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Bento D, Almeida JS, Couceiro P, Alves V, Santos-Rosa M, Barata FJ, Rodrigues-Santos P, Ferreira Rodrigues Figueiredo AM. MONITORING IMMUNODYNAMICS IN IMMUNE CHECKPOINT INHIBITOR THERAPY FOR STAGE IIIB/IV NON-SMALL CELL LUNG CANCER. Lung Cancer 2018. [DOI: 10.1183/13993003.congress-2018.pa2226] [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: 11/05/2022]
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13
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Oliveira Miranda C, Marcelo A, Silva TP, Barata J, Vasconcelos-Ferreira A, Pereira D, Nóbrega C, Duarte S, Barros I, Alves J, Sereno J, Petrella LI, Castelhano J, Paiva VH, Rodrigues-Santos P, Alves V, Nunes-Correia I, Nobre RJ, Gomes C, Castelo-Branco M, Pereira de Almeida L. Repeated Mesenchymal Stromal Cell Treatment Sustainably Alleviates Machado-Joseph Disease. Mol Ther 2018; 26:2131-2151. [PMID: 30087083 DOI: 10.1016/j.ymthe.2018.07.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 06/19/2018] [Accepted: 07/03/2018] [Indexed: 12/16/2022] Open
Abstract
Machado-Joseph disease (MJD) or spinocerebellar ataxia type 3, the most common dominant spinocerebellar ataxia (SCA) worldwide, is caused by over-repetition of a CAG repeat in the ATXN3/MJD1 gene, which translates into a polyglutamine tract within the ataxin-3 protein. There is no treatment for this fatal disorder. Despite evidence of the safety and efficacy of mesenchymal stromal cells (MSCs) in delaying SCA disease progression in exploratory clinical trials, unanticipated regression of patients to the status prior to treatment makes the investigation of causes and solutions urgent and imperative. In the present study, we compared the efficacy of a single intracranial injection with repeated systemic MSC administration in alleviating the MJD phenotype of two strongly severe genetic rodent models. We found that a single MSC transplantation only produces transient effects, whereas periodic administration promotes sustained motor behavior and neuropathology alleviation, suggesting that MSC therapies should be re-designed to get sustained beneficial results in clinical practice. Furthermore, MSC promoted neuroprotection, increased the levels of GABA and glutamate, and decreased the levels of Myo-inositol, which correlated with motor improvements, indicating that these metabolites may serve as valid neurospectroscopic biomarkers of disease and treatment. This study makes important contributions to the design of new clinical approaches for MJD and other SCAs/polyglutamine disorders.
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Affiliation(s)
- Catarina Oliveira Miranda
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Adriana Marcelo
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Teresa Pereira Silva
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - João Barata
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Ana Vasconcelos-Ferreira
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Doctoral Programme of Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal
| | - Dina Pereira
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Doctoral Programme in Experimental Biology and Biomedicine, CNC - University of Coimbra, Rua Larga, Faculdade de Medicina, Pólo I, 1° andar, 3004-504 Coimbra, Portugal
| | - Clévio Nóbrega
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Sónia Duarte
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Inês Barros
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Joana Alves
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - José Sereno
- Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Coimbra Institute for Biomedical Imaging and Translational Research, Edifício do ICNAS, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Institute of Nuclear Science Applied to Health, University of Coimbra, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Lorena Itatí Petrella
- Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Coimbra Institute for Biomedical Imaging and Translational Research, Edifício do ICNAS, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Institute of Nuclear Science Applied to Health, University of Coimbra, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - João Castelhano
- Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Coimbra Institute for Biomedical Imaging and Translational Research, Edifício do ICNAS, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Institute of Nuclear Science Applied to Health, University of Coimbra, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Vitor Hugo Paiva
- Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal; MARE - Marine and Environmental Sciences Centre, Department of Life Sciences, University of Coimbra, 3004-517 Coimbra, Portugal
| | - Paulo Rodrigues-Santos
- Immunology Institute, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal; Immunology and Oncology Laboratory, Center for Neurosciences and Cell Biology (CNC), University of Coimbra, Rua Larga, 3004-504, Portugal; Center of Investigation in Environment, Genetics and Oncobiology, Apartado 9015, 3001-301, Coimbra, Portugal
| | - Vera Alves
- Immunology Institute, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal; Immunology and Oncology Laboratory, Center for Neurosciences and Cell Biology (CNC), University of Coimbra, Rua Larga, 3004-504, Portugal; Center of Investigation in Environment, Genetics and Oncobiology, Apartado 9015, 3001-301, Coimbra, Portugal
| | - Isabel Nunes-Correia
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Rui Jorge Nobre
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão - Pólo II, Rua Dom Francisco de Lemos, 3030-789 Coimbra, Portugal; Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Célia Gomes
- Coimbra Institute for Clinical and Biomedical Research, Faculty of Medicine, University of Coimbra, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Miguel Castelo-Branco
- Centre for Neuroscience and Cell Biology - Institute of Biomedical Imaging and Life Science (CNC.IBILI), University of Coimbra, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Coimbra Institute for Biomedical Imaging and Translational Research, Edifício do ICNAS, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal; Institute of Nuclear Science Applied to Health, University of Coimbra, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal
| | - Luís Pereira de Almeida
- Center for Neuroscience and Cell Biology (CNC), University of Coimbra, Faculdade de Medicina, Rua Larga, Pólo I, 1° andar, 3004-504 Coimbra, Portugal; Faculty of Pharmacy, University of Coimbra, Polo 3, Azinhaga de Santa Comba, 3000-548 Coimbra, Portugal.
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14
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Monteiro L, Ramos R, Silva J, Sofia A, Pereira C, Alves V, Silva C, Paranhos S, Raposo S, Lerias C, Nave C. 267 OncoSexology clinic in Portugal. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.232] [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: 11/16/2022]
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15
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Russo S, Alves V, Raposo S, Lérias C, Matos P. 254 Vaginal stenosis prevention program: The evidence of practice. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.219] [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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16
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Costa AL, Silva BMA, Soares R, Mota D, Alves V, Mirante A, Ramos JC, Maló de Abreu J, Santos-Rosa M, Caramelo F, Gonçalves T. Type 1 diabetes in children is not a predisposing factor for oral yeast colonization. Med Mycol 2018; 55:358-367. [PMID: 27664993 DOI: 10.1093/mmy/myw092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 08/06/2016] [Indexed: 12/16/2022] Open
Abstract
Type 1 diabetes mellitus (T1D) is considered a risk factor associated with oral yeast infections. The aim of this study was to evaluate the yeast oral carriage (in saliva and mucosal surface) of children with T1D and potential relation with host factors, particularly the subset of CD4+ T cells. Yeasts were quantified and identified in stimulated saliva and in cheek mucosal swabs of 133 diabetic T1D and 72 healthy control subjects. Salivary lymphocytes were quantified using flow cytometry. The presence of yeasts in the oral cavity (60% of total patients) was not affected by diabetes, metabolic control, duration of the disease, salivary flow rate or saliva buffer capacity, by age, sex, place of residence, number of daily meals, consumption of sweets or frequency of tooth brushing. Candida albicans was the most prevalent yeast species, but a higher number of yeast species was isolated in nondiabetics. T1D children with HbA1c ≤ 7.5 (metabolically controlled) presented higher number of CD4+ T salivary subsets when compared with the other groups of children (non-diabetic and nonmetabolically controlled) and also presented the highest number of individuals without oral yeast colonization. In conclusion, T1D does not predisposes for increased oral yeast colonization and a higher number of salivary CD4+T cells seems to result in the absence of oral colonization by yeasts.
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Affiliation(s)
- Ana L Costa
- FMUC, Faculty of Medicine, University of Coimbra, Portugal
| | - Branca M A Silva
- CNC, Centre for Neurosciences and Cell Biology, University of Coimbra, Portugal
| | - Rui Soares
- FMUC, Faculty of Medicine, University of Coimbra, Portugal.,CNC, Centre for Neurosciences and Cell Biology, University of Coimbra, Portugal
| | - Diana Mota
- FMUC, Faculty of Medicine, University of Coimbra, Portugal
| | - Vera Alves
- FMUC, Faculty of Medicine, University of Coimbra, Portugal
| | | | - João C Ramos
- FMUC, Faculty of Medicine, University of Coimbra, Portugal
| | | | | | - Francisco Caramelo
- FMUC, Faculty of Medicine, University of Coimbra, Portugal.,Laboratory of Biostatistics and Medical Informatics, IBILI
| | - Teresa Gonçalves
- FMUC, Faculty of Medicine, University of Coimbra, Portugal.,CNC, Centre for Neurosciences and Cell Biology, University of Coimbra, Portugal
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17
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Carneiro S, Alves V, Camargo C, Arnóbio A, Mendonça L, Madeira M, Farias M, Ramos‐e‐Silva M. AVALIAÇÃO DA DENSIDADE MINERAL ÓSSEA EM PACIENTES COM DOENÇA PSORIÁSICA. Revista Brasileira de Reumatologia 2017. [DOI: 10.1016/j.rbr.2017.07.108] [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] Open
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18
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Ferreira-Teixeira M, Parada B, Rodrigues-Santos P, Alves V, Ramalho JS, Caramelo F, Sousa V, Reis F, Gomes CM. Functional and molecular characterization of cancer stem-like cells in bladder cancer: a potential signature for muscle-invasive tumors. Oncotarget 2016; 6:36185-201. [PMID: 26452033 PMCID: PMC4742170 DOI: 10.18632/oncotarget.5517] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 09/24/2015] [Indexed: 12/31/2022] Open
Abstract
Striking evidence associates cancer stem cells (CSCs) to the high recurrence rates and poor survival of patients with muscle-invasive bladder cancer (BC). However, the prognostic implication of those cells in risk stratification is not firmly established, mainly due to the functional and phenotypic heterogeneity of CSCs populations, as well as, to the conflicting data regarding their identification based on a single specific marker. This emphasizes the need to exploit putative CSC-related molecular markers with potential prognostic significance in BC patients. This study aimed to isolate and characterize bladder CSCs making use of different functional and molecular approaches. The data obtained provide strong evidence that muscle-invasive BC is enriched with a heterogeneous stem-like population characterized by enhanced chemoresistance and tumor initiating properties, able to recapitulate the heterogeneity of the original tumor. Additionally, a logistic regression analysis identified a 2-gene stem-like signature (SOX2 and ALDH2) that allows a 93% accurate discrimination between non-muscle-invasive and invasive tumors. Our findings suggest that a stemness-related gene signature, combined with a cluster of markers to more narrowly refine the CSC phenotype, could better identify BC patients that would benefit from a more aggressive therapeutic intervention targeting CSCs population.
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Affiliation(s)
- Margarida Ferreira-Teixeira
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - Belmiro Parada
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Urology and Renal Transplantation Department, Coimbra University Hospital Centre (CHUC), Coimbra, Portugal
| | - Paulo Rodrigues-Santos
- Immunology and Oncology Laboratory, Center for Neurosciences and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal.,Institute of Immunology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Vera Alves
- Institute of Immunology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - José S Ramalho
- CEDOC, Faculty of Medical Sciences, New University of Lisbon, Lisbon, Portugal
| | - Francisco Caramelo
- Laboratory of Biostatistics and Medical Informatics, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Vitor Sousa
- Institute of Anatomical and Molecular Pathology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Service of Anatomical Pathology, Coimbra University Hospital Centre (CHUC), Coimbra, Portugal
| | - Flávio Reis
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal.,Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Célia M Gomes
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal.,Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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19
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Ferreira-Teixeira M, Paiva-Oliveira D, Parada B, Alves V, Sousa V, Chijioke O, Münz C, Reis F, Rodrigues-Santos P, Gomes C. Natural killer cell-based adoptive immunotherapy eradicates and drives differentiation of chemoresistant bladder cancer stem-like cells. BMC Med 2016; 14:163. [PMID: 27769244 PMCID: PMC5075212 DOI: 10.1186/s12916-016-0715-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 10/06/2016] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND High-grade non-muscle invasive bladder cancer (NMIBC) has a high risk of recurrence and progression to muscle-invasive forms, which seems to be largely related to the presence of tumorigenic stem-like cell populations that are refractory to conventional therapies. Here, we evaluated the therapeutic potential of Natural Killer (NK) cell-based adoptive immunotherapy against chemoresistant bladder cancer stem-like cells (CSCs) in a pre-clinical relevant model, using NK cells from healthy donors and NMIBC patients. METHODS Cytokine-activated NK cells from healthy donors and from high-grade NMIBC patients were phenotypically characterized and assayed in vitro against stem-like and bulk differentiated bladder cancer cells. Stem-like cells were isolated from two bladder cancer cell lines using the sphere-forming assay. The in vivo therapeutic efficacy was evaluated in mice bearing a CSC-induced orthotopic bladder cancer. Animals were treated by intravesical instillation of interleukin-activated NK cells. Tumor response was evaluated longitudinally by non-invasive bioluminescence imaging. RESULTS NK cells from healthy donors upon activation with IL-2 and IL-15 kills indiscriminately both stem-like and differentiated tumor cells via stress ligand recognition. In addition to cell killing, NK cells shifted CSCs towards a more differentiated phenotype, rendering them more susceptible to cisplatin, highlighting the benefits of a possible combined therapy. On the contrary, NK cells from NMIBC patients displayed a low density on NK cytotoxicity receptors, adhesion molecules and a more immature phenotype, losing their ability to kill and drive differentiation of CSCs. The local administration, via the transurethral route, of activated NK cells from healthy donors provides an efficient tumor infiltration and a subsequent robust tumoricidal activity against bladder cancer with high selective cytolytic activity against CSCs, leading to a dramatic reduction in tumor burden from 80 % to complete remission. CONCLUSION Although pre-clinical, our results strongly suggest that an immunotherapeutic strategy using allogeneic activated NK cells from healthy donors is effective and should be exploited as a complementary therapeutic strategy in high-risk NMIBC patients to prevent tumor recurrence and progression.
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Affiliation(s)
- Margarida Ferreira-Teixeira
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - Daniela Paiva-Oliveira
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - Belmiro Parada
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Urology and Renal Transplantation Department, Coimbra University Hospital Centre (CHUC), Coimbra, Portugal
| | - Vera Alves
- Institute of Immunology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Vitor Sousa
- Service of Anatomical Pathology, Coimbra University Hospital Centre (CHUC), Coimbra, Portugal.,Institute of Anatomical and Molecular Pathology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Obinna Chijioke
- Viral Immunobiology, Institute of Experimental Immunology, University of Zürich, Zürich, Switzerland
| | - Christian Münz
- Viral Immunobiology, Institute of Experimental Immunology, University of Zürich, Zürich, Switzerland
| | - Flávio Reis
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,CNC.IBILI, University of Coimbra, Coimbra, Portugal
| | - Paulo Rodrigues-Santos
- Institute of Immunology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.,Immunology and Oncology Laboratory, Center for Neurosciences and Cell Biology (CNC), University of Coimbra, Coimbra, Portugal
| | - Célia Gomes
- Laboratory of Pharmacology and Experimental Therapeutics, Institute for Biomedical Imaging and Life Sciences (IBILI), Faculty of Medicine, University of Coimbra, Coimbra, Portugal. .,CNC.IBILI, University of Coimbra, Coimbra, Portugal. .,Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal.
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20
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Alves V, Conceição C, Gonçalves J, Teixeira HM, Câmara JS. Improved Analytical Approach Based on QuECHERS/UHPLC-PDA for Quantification of Fluoxetine, Clomipramine and their Active Metabolites in Human Urine Samples. J Anal Toxicol 2016; 41:45-53. [DOI: 10.1093/jat/bkw077] [Citation(s) in RCA: 14] [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] [Received: 07/15/2016] [Revised: 05/09/2016] [Accepted: 05/15/2016] [Indexed: 11/12/2022] Open
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21
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Areia AL, Vale-Pereira S, Vaz-Ambrósio A, Alves V, Rodrigues-Santos P, Rosa MS, Moura P, Mota-Pinto A. Does progesterone administration in preterm labor influence Treg cells? J Perinat Med 2016; 44:605-11. [PMID: 26352073 DOI: 10.1515/jpm-2015-0134] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Accepted: 07/29/2015] [Indexed: 11/15/2022]
Abstract
OBJECTIVES The aim of this study was to determine if the actions of progesterone on preterm labor are accomplished through modulation of the percentage of regulatory T-cells (Treg). METHODS The study was a cohort pilot study made in a single center tertiary obstetrical unit with women in preterm labor arrested with tocolytic treatment. Variation of the number and percentage of Treg cells obtained from peripheral blood samples of women with preterm labor were calculated by flow cytometry, before and after progesterone administration. RESULTS In the paired samples for each patient, there was a significant difference in the Treg cell pool after progesterone treatment, with an increase in both their percentage (48.9 vs. 53; P=0.07) and absolute number (14.8 vs. 56.5 cells/μL; P=0.046). CONCLUSIONS This research demonstrated a considerable increase in the Treg cell pool after progesterone treatment. This indicates a possible mechanism for progesterone treatment benefits in preterm labor, potentially increasing its more rational use.
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22
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Areia A, Vale-Pereira S, Alves V, Rodrigues-Santos P, Santos-Rosa M, Moura P, Mota-Pinto A. Can membrane progesterone receptor α on T regulatory cells explain the ensuing human labour? J Reprod Immunol 2016; 113:22-6. [DOI: 10.1016/j.jri.2015.10.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 09/15/2015] [Accepted: 10/14/2015] [Indexed: 11/29/2022]
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23
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Alves LFA, Oliveira DGP, Lambkin T, Bonini AK, Alves V, Pinto FGS, Scur MC. Beauveria Bassiana Applied to Broiler Chicken Houses as Biocontrol of Alphitobius Diaperinus Panzer (Coleoptera: Tenebrionidae), an Avian Pathogens Vector. Rev Bras Cienc Avic 2015. [DOI: 10.1590/1516-635x1704459-466] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- LFA Alves
- State University of Western Paraná, Brazil
| | | | - T Lambkin
- Entomologist at Ensource Consulting Pty Ltd, Australia
| | - AK Bonini
- State University of Western Paraná, Brazil
| | - V Alves
- State University of Western Paraná, Brazil
| | - FGS Pinto
- State University of Western Paraná, Brazil
| | - MC Scur
- State University of Western Paraná, Brazil
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24
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Fonseca NA, Rodrigues AS, Rodrigues-Santos P, Alves V, Gregório AC, Valério-Fernandes Â, Gomes-da-Silva LC, Rosa MS, Moura V, Ramalho-Santos J, Simões S, Moreira JN. Nucleolin overexpression in breast cancer cell sub-populations with different stem-like phenotype enables targeted intracellular delivery of synergistic drug combination. Biomaterials 2015; 69:76-88. [PMID: 26283155 DOI: 10.1016/j.biomaterials.2015.08.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [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: 03/17/2015] [Revised: 08/02/2015] [Accepted: 08/04/2015] [Indexed: 12/31/2022]
Abstract
Breast cancer stem cells (CSC) are thought responsible for tumor growth and relapse, metastization and active evasion to standard chemotherapy. The recognition that CSC may originate from non-stem cancer cells (non-SCC) through plastic epithelial-to-mesenchymal transition turned these into relevant cell targets. Of crucial importance for successful therapeutic intervention is the identification of surface receptors overexpressed in both CSC and non-SCC. Cell surface nucleolin has been described as overexpressed in cancer cells as well as a tumor angiogenic marker. Herein we have addressed the questions on whether nucleolin was a common receptor among breast CSC and non-SCC and whether it could be exploited for targeting purposes. Liposomes functionalized with the nucleolin-binding F3 peptide, targeted simultaneously, nucleolin-overexpressing putative breast CSC and non-SCC, which was paralleled by OCT4 and NANOG mRNA levels in cells from triple negative breast cancer (TNBC) origin. In murine embryonic stem cells, both nucleolin mRNA levels and F3 peptide-targeted liposomes cellular association were dependent on the stemness status. An in vivo tumorigenic assay suggested that surface nucleolin overexpression per se, could be associated with the identification of highly tumorigenic TNBC cells. This proposed link between nucleolin expression and the stem-like phenotype in TNBC, enabled 100% cell death mediated by F3 peptide-targeted synergistic drug combination, suggesting the potential to abrogate the plasticity and adaptability associated with CSC and non-SCC. Ultimately, nucleolin-specific therapeutic tools capable of simultaneous debulk multiple cellular compartments of the tumor microenvironment may pave the way towards a specific treatment for TNBC patient care.
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Affiliation(s)
- Nuno A Fonseca
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; FFUC - Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
| | - Ana S Rodrigues
- PhD Program in Experimental Biology and Biomedicine (PDBEB), Center for Neuroscience and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal
| | - Paulo Rodrigues-Santos
- Immunology Institute, Faculty of Medicine (Polo I), University of Coimbra, Rua Larga, Coimbra 3004-504, Portugal; Immunology and Oncology Laboratory, Center for Neuroscience and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal
| | - Vera Alves
- Immunology Institute, Faculty of Medicine (Polo I), University of Coimbra, Rua Larga, Coimbra 3004-504, Portugal
| | - Ana C Gregório
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; PhD Program in Experimental Biology and Biomedicine (PDBEB), Center for Neuroscience and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; IIIUC - Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão (Polo II), Rua Dom Francisco de Lemos, Coimbra 3030-789, Portugal
| | - Ângela Valério-Fernandes
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; PhD Program in Experimental Biology and Biomedicine (PDBEB), Center for Neuroscience and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; IIIUC - Institute for Interdisciplinary Research, University of Coimbra, Casa Costa Alemão (Polo II), Rua Dom Francisco de Lemos, Coimbra 3030-789, Portugal
| | - Lígia C Gomes-da-Silva
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; FFUC - Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra 3000-548, Portugal; PhD Program in Experimental Biology and Biomedicine (PDBEB), Center for Neuroscience and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal
| | - Manuel Santos Rosa
- Immunology Institute, Faculty of Medicine (Polo I), University of Coimbra, Rua Larga, Coimbra 3004-504, Portugal
| | - Vera Moura
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; TREAT U, S.A., Parque Industrial de Taveiro, Lote 44, Coimbra 3045-508, Portugal
| | - João Ramalho-Santos
- Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Calçada Martim de Freitas, Coimbra 3000-456, Portugal
| | - Sérgio Simões
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; FFUC - Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra 3000-548, Portugal
| | - João Nuno Moreira
- CNC - Center for Neurosciences and Cell Biology, University of Coimbra, Faculty of Medicine (Polo I), Rua Larga, Coimbra 3004-504, Portugal; FFUC - Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra 3000-548, Portugal.
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25
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Alves V, Gonçalves J, Conceição C, Teixeira HM, Câmara JS. An improved analytical strategy combining microextraction by packed sorbent combined with ultra high pressure liquid chromatography for the determination of fluoxetine, clomipramine and their active metabolites in human urine. J Chromatogr A 2015; 1408:30-40. [DOI: 10.1016/j.chroma.2015.07.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 07/01/2015] [Accepted: 07/06/2015] [Indexed: 10/23/2022]
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26
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Neves I, Alves V, Duraes A, Abreu RC, Jordão S, Guimaraes M, Soares MJ, Peres D, Vieira F, Devesa I. Implementation of a hospital antibiotic stewardship program: first results. Antimicrob Resist Infect Control 2015. [PMCID: PMC4475119 DOI: 10.1186/2047-2994-4-s1-p180] [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: 11/24/2022] Open
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27
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Rosa-Gonçalves D, Bernardes M, Vieira T, Magro F, Macedo G, Oliveira A, Faria T, Alves V, Perez M, Pinto A, Ramos I, Pereira J, Costa L. AB0891 Prevalence of Osteoporosis and Vitamin D Deficiency in Patients with Inflammatory Bowel Disease. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.4129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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28
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Santos P, Alves V, Couto M, Ferreira M, Alves O, Moreira C, Abreu S, Santos R, Mota J. Physical activity during pregnancy and its effects on fetal parameters in the second trimester. Appetite 2015. [DOI: 10.1016/j.appet.2014.12.035] [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: 10/23/2022]
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Gonçalves AC, Cortesão E, Oliveiros B, Alves V, Espadana AI, Rito L, Magalhães E, Lobão MJ, Pereira A, Nascimento Costa JM, Mota-Vieira L, Sarmento-Ribeiro AB. Oxidative stress and mitochondrial dysfunction play a role in myelodysplastic syndrome development, diagnosis, and prognosis: A pilot study. Free Radic Res 2015; 49:1081-94. [PMID: 25968944 DOI: 10.3109/10715762.2015.1035268] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The imbalance between reactive oxygen species (ROS) production and their elimination by antioxidants leads to oxidative stress. Depending on their concentration, ROS can trigger apoptosis or stimulate cell proliferation. We hypothesized that oxidative stress and mitochondrial dysfunction may participate not only in apoptosis detected in some myelodysplastic syndrome (MDS) patients, but also in increasing proliferation in other patients. We investigated the involvement of oxidative stress and mitochondrial dysfunction in MDS pathogenesis, as well as assessed their diagnostic and prognostic values. Intracellular peroxides, superoxide, superoxide/peroxides ratio, reduced glutathione (GSH), and mitochondrial membrane potential (Δψ(mit)) levels were analyzed in bone marrow cells from 27 MDS patients and 12 controls, by flow cytometry. We observed that all bone marrow cell types from MDS patients had increased intracellular peroxide levels and decreased GSH content, compared with control cells. Moreover, oxidative stress levels were MDS subtype- and risk group-dependent. Low-risk patients had the highest ROS levels, which can be related with their high apoptosis; and intermediate-2-risk patients had high Δψ(mit) that may be associated with their proliferative potential. GSH levels were negatively correlated with transfusion dependency, and peroxide levels were positively correlated with serum ferritin level. GSH content proved to be an accurate parameter to discriminate patients from controls. Finally, patients with high ROS or low GSH levels, as well as high superoxide/peroxides ratio had lower overall survival. Our results suggest that oxidative stress and mitochondrial dysfunction are involved in MDS development, and that oxidative stress parameters may constitute novel diagnosis and/or prognosis biomarkers for MDS.
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Affiliation(s)
- A C Gonçalves
- Laboratory of Oncobiology and Hematology, FMUC - Faculty of Medicine, University of Coimbra , Coimbra , Portugal
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Gonçalves AC, Cortesão E, Oliveiros B, Alves V, Espadana AI, Rito L, Magalhães E, Pereira S, Pereira A, Costa JMN, Mota-Vieira L, Sarmento-Ribeiro AB. Oxidative stress levels are correlated with P15 and P16 gene promoter methylation in myelodysplastic syndrome patients. Clin Exp Med 2015; 16:333-43. [PMID: 25982567 DOI: 10.1007/s10238-015-0357-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Accepted: 05/03/2015] [Indexed: 11/24/2022]
Abstract
Oxidative stress and abnormal DNA methylation have been implicated in some types of cancer, namely in myelodysplastic syndromes (MDS). Since both mechanisms are observed in MDS patients, we analyzed the correlation of intracellular levels of peroxides, superoxide anion, and glutathione (GSH), as well as ratios of peroxides/GSH and superoxide/GSH, with the methylation status of P15 and P16 gene promoters in bone marrow leukocytes from MDS patients. Compared to controls, these patients had lower GSH content, higher peroxide levels, peroxides/GSH and superoxide/GSH ratios, as well as higher methylation frequency of P15 and P16 gene promoters. Moreover, patients with methylated P15 gene had higher oxidative stress levels than patients without methylation (peroxides: 460 ± 42 MIF vs 229 ± 25 MIF, p = 0.001; superoxide: 383 ± 48 MIF vs 243 ± 17 MIF, p = 0.022; peroxides/GSH: 2.50 ± 0.08 vs 1.04 ± 0.34, p < 0.001; superoxide/GSH: 1.76 ± 0.21 vs 1.31 ± 0.10, p = 0.007). Patients with methylated P16 and at least one methylated gene had higher peroxide levels as well as peroxides/GSH ratio than patients without methylation. Interestingly, oxidative stress levels allow the discrimination of patients without methylation from ones with methylated P15, methylated P16, or at least one methylated (P15 or P16) promoter. Taken together, these findings support the hypothesis that oxidative stress is correlated with P15 and P16 hypermethylation.
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Affiliation(s)
- Ana Cristina Gonçalves
- Applied Molecular Biology, University Clinic of Hematology, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra (FMUC), Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,Center for Neuroscience and Cell Biology (CNC), Coimbra, Portugal
| | - Emília Cortesão
- Applied Molecular Biology, University Clinic of Hematology, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra (FMUC), Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,Clinical Hematology Department, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
| | - Barbara Oliveiros
- Laboratory for Biostatistics and Medical Informatics, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal
| | - Vera Alves
- Immunology, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal
| | - Ana Isabel Espadana
- Clinical Hematology Department, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
| | - Luís Rito
- Applied Molecular Biology, University Clinic of Hematology, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra (FMUC), Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal.,Clinical Hematology Department, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
| | - Emília Magalhães
- Clinical Hematology Department, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal
| | - Sónia Pereira
- Medicine Department, Hospital Distrital da Figueira da Foz, Figueira da Foz, Portugal
| | - Amélia Pereira
- Medicine Department, Hospital Distrital da Figueira da Foz, Figueira da Foz, Portugal
| | - José Manuel Nascimento Costa
- Oncology Department, Centro Hospital e Universitário de Coimbra (CHUC), Coimbra, Portugal.,University Clinic of Oncology, Faculty of Medicine, University of Coimbra (FMUC), Coimbra, Portugal
| | - Luisa Mota-Vieira
- Molecular Genetics and Pathology Unit, Hospital of Divino Espírito Santo of Ponta Delgada EPE, São Miguel Island, Azores, Portugal.,Azores Genetics Research Group, Instituto Gulbenkian de Ciência, Oeiras, Portugal.,Faculty of Sciences, Biosystems & Integrative Sciences Institute (BioISI), University of Lisboa, Lisbon, Portugal
| | - Ana Bela Sarmento-Ribeiro
- Applied Molecular Biology, University Clinic of Hematology, Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra (FMUC), Azinhaga de Santa Comba - Celas, 3000-548, Coimbra, Portugal. .,Center for Neuroscience and Cell Biology (CNC), Coimbra, Portugal. .,Clinical Hematology Department, Centro Hospitalar e Universitário de Coimbra (CHUC), Coimbra, Portugal.
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Alves R, Fonseca AR, Gonçalves AC, Ferreira-Teixeira M, Lima J, Abrantes AM, Alves V, Rodrigues-Santos P, Jorge L, Matoso E, Carreira IM, Botelho MF, Sarmento-Ribeiro AB. Drug transporters play a key role in the complex process of Imatinib resistance in vitro. Leuk Res 2015; 39:355-60. [DOI: 10.1016/j.leukres.2014.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 10/29/2014] [Accepted: 12/14/2014] [Indexed: 11/27/2022]
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Areia A, Vale-Pereira S, Alves V, Rodrigues-Santos P, Moura P, Mota-Pinto A. Membrane progesterone receptors in human regulatory T cells: a reality in pregnancy. BJOG 2015; 122:1544-50. [PMID: 25639501 DOI: 10.1111/1471-0528.13294] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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: 12/06/2014] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To provide evidence of the existence of membrane progesterone receptor alpha (mPRα) on regulatory T cells (Treg) in peripheral blood during pregnancy, postulating a possible explanation for the effect of progesterone on preterm birth. DESIGN Cross-sectional study. SETTING Tertiary Obstetric Department in a University Hospital. POPULATION Healthy pregnant women. METHODS Treg cells from peripheral blood samples were studied by flow cytometry using multiple monoclonal antibody expression. MAIN OUTCOME MEASURES Evaluate the number and percentage of CD4(+) CD25(high) CD127(low) , the number and percentage of Treg cells among the total CD4(+) T cells, and the percentage and mean fluorescence intensity (MFI) of mPRα in that population, using several gating strategies. RESULTS 43 peripheral blood samples were collected from healthy women during pregnancy, whose median gestational age was 28.7 ± 7.1 (16-40) weeks. The percentage of CD4(+) in the total lymphocytes was 43% (32-51) and the percentage of CD4(+) CD25(high) CD127(low) was 4.8% (1.6-5.9), with only 45% (16-72) of those cells expressing the intracellular marker FoxP3 (Treg cell pool). We confirmed the existence of mPRα in that specific population because 8.0% (2.02-33) of the Treg cells were marked with the specific monoclonal antibody, with an mPRα(+) MFI of 719 (590-1471). CONCLUSIONS This research shows that Treg cells express mPRα during pregnancy, which might play an important role in immune modulation by progesterone.
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Affiliation(s)
- A Areia
- Faculty of Medicine, University of Coimbra and Obstetric Unit, Coimbra University Hospital Centre, Coimbra, Portugal
| | - S Vale-Pereira
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - V Alves
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | | | - P Moura
- Faculty of Medicine, University of Coimbra and Obstetric Unit, Coimbra University Hospital Centre, Coimbra, Portugal
| | - A Mota-Pinto
- Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Cabrita A, Peixoto A, Loureiro E, Santos P, Alves V, Rosa M. Autofluorescence of lymphocytes induced by manual acupuncture (1186.1). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.1186.1] [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: 11/11/2022]
Affiliation(s)
| | - Ana Peixoto
- Faculty of Medicine University of CoimbraCoimbraPortugal
| | | | - Paulo Santos
- Faculty of Medicine University of CoimbraCoimbraPortugal
| | - Vera Alves
- Faculty of Medicine University of CoimbraCoimbraPortugal
| | - Manuel Rosa
- Faculty of Medicine University of CoimbraCoimbraPortugal
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Sousa MC, Varandas R, Santos RC, Santos-Rosa M, Alves V, Salvador JAR. Antileishmanial activity of semisynthetic lupane triterpenoids betulin and betulinic acid derivatives: synergistic effects with miltefosine. PLoS One 2014; 9:e89939. [PMID: 24643019 PMCID: PMC3958361 DOI: 10.1371/journal.pone.0089939] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Accepted: 01/23/2014] [Indexed: 11/21/2022] Open
Abstract
Leishmaniasis is a neglected tropical disease (NTDs), endemic in 88 countries, affecting more than 12 million people. The treatment consists in pentavalent antimony compounds, amphotericin B, pentamidine and miltefosine, among others. However, these current drugs are limited due to their toxicity, development of biological resistance, length of treatment and high cost. Thus, it is important to continue the search for new effective and less toxic treatments. The anti-Leishmania activity of sixteen semisynthetic lupane triterpenoids derivatives of betulin (BT01 to BT09) and betulinic acid (AB10 to AB16) were evaluated. Drug interactions between the active compounds and one current antileishmanial drug, miltefosine, were assessed using the fixed ratio isobologram method. In addition, effects on the cell cycle, apoptosis/necrosis events, morphology and DNA integrity were studied. The derivatives BT06 (3β-Hydroxy-(20R)-lupan-29-oxo-28-yl-1H-imidazole-1-carboxylate) and AB13 (28-(1H-imidazole-1-yl)-3,28-dioxo-lup-1,20(29)-dien-2-yl-1H-imidazole-1-carboxylate) were found to be the most active, with IC50 values of 50.8 µM and 25.8 µM, respectively. Interactions between these two compounds and miltefosine were classified as synergistic, with the most effective association being between AB13 and miltefosine, where decreases of IC50 values to 6 µM were observed, similar to the miltefosine activity alone. AB13 induced significant morphological changes, while both derivatives produced anti-proliferative activity through cell cycle arrest at the G0/G1 phase. Neither of these derivatives induced significant apoptosis/necrosis, as indicated by phosphatidylserine externalization and DNA fragmentation assays. In addition, neither of the derivatives induced death in macrophage cell lines. Thus, they do not present any potential risk of toxicity for the host cells. This study has identified the betulin derivative BT06 and the betulinic acid derivative AB13 as promising molecules in the development of new alternative therapies for leishmaniasis, including those involving combined-therapy with miltefosine.
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Affiliation(s)
- Maria C. Sousa
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra, Portugal
- Centre of Pharmaceutical Studies, Faculty of Pharmacy of University of Coimbra (CEF/FFUC), Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra, Portugal
- * E-mail: (MCS); (JARS)
| | - Raquel Varandas
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra, Portugal
| | - Rita C. Santos
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra, Portugal
| | - Manuel Santos-Rosa
- Institute of Immunology, Faculty of Medicine, University of Coimbra, Pólo I, Rua Larga, Coimbra, Portugal
| | - Vera Alves
- Institute of Immunology, Faculty of Medicine, University of Coimbra, Pólo I, Rua Larga, Coimbra, Portugal
| | - Jorge A. R. Salvador
- Faculty of Pharmacy, University of Coimbra, Pólo das Ciências da Saúde, Azinhaga de Santa Comba, Coimbra, Portugal
- CNC- Center for Neurosciences and Cell Biology, University of Coimbra, Coimbra, Portugal
- * E-mail: (MCS); (JARS)
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Pereira J, Silva CL, Perestrelo R, Gonçalves J, Alves V, Câmara JS. Re-exploring the high-throughput potential of microextraction techniques, SPME and MEPS, as powerful strategies for medical diagnostic purposes. Innovative approaches, recent applications and future trends. Anal Bioanal Chem 2014; 406:2101-22. [DOI: 10.1007/s00216-013-7527-4] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Revised: 11/16/2013] [Accepted: 11/20/2013] [Indexed: 11/30/2022]
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Pereira de Moura J, Santos Rosa M, Alves V, Mota Pinto A, Rodrigues V, Silva JM, Alves de Moura JJ. [CD4+, CD8+ AND CD19+ cells in individuals with dyslipidemia]. ACTA MEDICA PORT 2013; 26:676-682. [PMID: 24388253] [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] [Received: 02/03/2013] [Accepted: 08/01/2013] [Indexed: 06/03/2023]
Abstract
INTRODUCTION The past decade has witnessed an increasing recognition that inflammatory mechanisms play a central role in the pathogenesis of atherosclerosis and its complications. Recently, attention was focused on the potential role of plasma markers of inflammation as risk predictors among those at risk for cardiovascular events. Of these potential markers, C-reactive protein (CRP), IL6, metalloproteinases, ICAM, VCAM and other molecules, have been extensively studied. On the other hand, to our knowledge, there are only a few studies on the role of inflammatory cells, like T and B lymphocytes in the atherosclerosis. MATERIAL AND METHODS By flow cytometry analysis we have determined on dyslipidemic people and on a control group, the percentage of some peripheral inflammatory cells, like CD3+, CD4+, CD8+, CD19+, CD56+, CD56CD8+, DN, CD25+, CD26+, CD25CD3+, CD26CD3+, CD25CD26CD3+, CCR5+, CCR5CD3+, CCR5CD4+, HLADR+, HLADRCD4+, HLADRCD8h+, HLADRCD8low+, HLADRCD8+, CD95+, CD95CD95L+, CD3CD95+, CD3CD95L+, CD62L+, CD3CD62L+, CD69+, CD69CD3+ e CD69CD4+. RESULTS In the present study we have particularly studied the percentage of CD4+, CD8+ and CD19+ cells. The CD4+ cells have been significantly reduced in the people with dyslipidemia. DISCUSSION We do not know the peripheral numbers of the subtype Th1 and Th2, neither the percentage of CD4+CD25+ cells (regulatory T cells). We have not find any differences on the percentage from the CD8+ and CD19+ cells. CONCLUSIONS In spite of the identified limitations resulting from the small-sized samples, it was possible to show a reduction of some molecules after application of acetylsalicylic acid.
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Affiliation(s)
- Jose Pereira de Moura
- Serviço de Medicina Interna. Centro Hospitalar e Universitário de Coimbra. Coimbra. Portugal
| | - Manuel Santos Rosa
- Laboratório de Imunologia. Faculdade de Medicina. Universidade de Coimbra. Coimbra. Portugal
| | - Vera Alves
- Laboratório de Imunologia. Faculdade de Medicina. Universidade de Coimbra. Coimbra. Portugal
| | - Anabela Mota Pinto
- Laboratório de Patologia Geral. Faculdade de Medicina. Universidade de Coimbra. Coimbra. Portugal
| | - Victor Rodrigues
- Instituto de Higiene e Medicina Social. Faculdade de Medicina. Universidade de Coimbra. Coimbra. Portugal
| | - José Manuel Silva
- Serviço de Medicina Interna. Centro Hospitalar e Universitário de Coimbra. Coimbra. Portugal
| | - J J Alves de Moura
- Serviço de Medicina Interna. Centro Hospitalar e Universitário de Coimbra. Coimbra. Portugal
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Gonçalves AC, Barbosa-Ribeiro A, Alves V, Silva T, Sarmento-Ribeiro AB. Selenium compounds induced ROS-dependent apoptosis in myelodysplasia cells. Biol Trace Elem Res 2013; 154:440-7. [PMID: 23900644 DOI: 10.1007/s12011-013-9749-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 07/01/2013] [Indexed: 02/05/2023]
Abstract
Several authors have demonstrated the chemoprotective and anti-carcinogenic role of selenium. However, the therapeutic potential of selenium in myelodysplastic syndrome (MDS) as single agent and as co-adjuvant of the current therapies has not been previously studied. Sodium selenite and selenomethionine, alone and in combination with cytarabine, induce a decrease in cell viability in a time-, dose- and administration-dependent manner inducing cell death by apoptosis in F36P cells (MDS cell line). These compounds increased superoxide production and induced mitochondrial membrane depolarization. The increase in BAX/BCL-2 ratio and in the activated caspase 3 expression levels, the decrease in mitochondria membrane potential, as well as the increase in superoxide production, supports the mitochondria contribution on selenium-induced apoptosis. These findings suggest that selenium may offer a new therapeutic approach in myelodysplastic syndrome in monotherapy and/or as co-adjuvant therapy to conventional anti-carcinogenic.
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Affiliation(s)
- Ana Cristina Gonçalves
- Applied Molecular Biology, University Clinic of Haematology and Center of Investigation in Environment, Genetics and Oncobiology (CIMAGO), Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Neves I, Alves V, Peres D, Vieira F, Devesa I. P047: Fighting MRSA in an high endemic level hospital. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688446 DOI: 10.1186/2047-2994-2-s1-p47] [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: 12/03/2022] Open
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Neves I, Vieira F, Peres D, Devesa I, Alves V. P186: Infection control plan management in primary care. Antimicrob Resist Infect Control 2013. [PMCID: PMC3688116 DOI: 10.1186/2047-2994-2-s1-p186] [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: 12/02/2022] Open
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Gonçalves AC, Alves V, Silva T, Carvalho C, Oliveira CRD, Sarmento-Ribeiro AB. Oxidative stress mediates apoptotic effects of ascorbate and dehydroascorbate in human Myelodysplasia cells in vitro. Toxicol In Vitro 2013; 27:1542-9. [PMID: 23542209 DOI: 10.1016/j.tiv.2013.03.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Revised: 03/16/2013] [Accepted: 03/19/2013] [Indexed: 11/17/2022]
Abstract
The Myelodysplastic Syndromes are stem cell heterogeneous disorders characterized by peripheral cytopenias and hypercellular bone marrow, which can evolute to acute leukaemia. Vitamin C can act as an antioxidant, ascorbic acid (AA) donates two electrons and becomes oxidized to dehydroascorbic acid (DHA). Under physiological conditions, vitamin C predominantly exists in its reduced (AA) form but also exists in trace quantities in the oxidized form (DHA). This study evaluates the therapeutic potential of vitamin C in Myelodysplastic Syndromes (MDSs). F36P cells (MDS cell line) were treated with ascorbate and dehydroascorbate alone and in combination with cytarabine. Cell proliferation and viability were assessed by trypan blue assay and cell death was evaluated by optical microscopy and flow cytometry. The role of reactive oxygen species, mitochondrial membrane potential, BAX, BCL-2 and cytochrome C were also assessed. Vitamin C decreases cell proliferation and viability in a concentration, time and administration dependent-manner inducing cell death by apoptosis, which was shown to be associated to an increased in superoxide production, mitochondrial membrane depolarization. These compounds modulate BCL-2, BAX and cytochrome C release. These results suggest that vitamin C induces cell death trough apoptosis in F36P cells and may be a new therapeutic approach in Myelodysplasia.
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Affiliation(s)
- Ana Cristina Gonçalves
- Applied Molecular Biology and Hematology University Clinic, Faculty of Medicine, University of Coimbra, 3000-548 Coimbra, Portugal
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Costa M, Espirito-Santo H, Simões S, Correia A, Almeida R, Ferreira L, Conde Â, Alves V, Ferreira F, Caldas L, Pena I, Costa A, Simões D, Daniel F, Lemos L. 1549 – Correlates of elderly loneliness. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76559-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Albuquerque C, Martins R, Alves V, Cruz C. 1991 – Burnout syndrome in nurses specialists rehabilitation. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76928-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Freitas M, Alves V, Sarmento-Ribeiro A, Mota-Pinto A. Polycyclic Aromatic Hydrocarbons May Contribute for Prostate Cancer Progression. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/jct.2013.44a005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Almeida R, Marques M, Espírito Santo H, Moitinho S, Vigário V, Pena I, Matreno J, Rodrigues F, Antunes E, Simões D, Costa A, Correia A, Pimentel A, Alves V, Nascimento T, Costa M, Tomaz M, Caldas L, Ferreira L, Simões S, Guadalupe S, Lemos L, Daniel F. 1230 – Selective attention and cognitive decline in institutionalized elderly. Eur Psychiatry 2013. [DOI: 10.1016/s0924-9338(13)76308-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Gomes G, Hallal P, Alves V. Barriers to engagement in physical activity among adults and elderly non-participants of a physical activity intervention in primary health care. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.400] [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: 11/26/2022]
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Freitas M, Baldeiras I, Proença T, Alves V, Mota-Pinto A, Sarmento-Ribeiro A. Oxidative stress adaptation in aggressive prostate cancer may be counteracted by the reduction of glutathione reductase. FEBS Open Bio 2012; 2:119-28. [PMID: 23650590 PMCID: PMC3642126 DOI: 10.1016/j.fob.2012.05.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 05/10/2012] [Accepted: 05/11/2012] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress has been associated with prostate cancer development and progression due to an increase of reactive oxygen species (ROS). However, the mechanisms whereby ROS and the antioxidant system participate in cancer progression remain unclear. In order to clarify the influence of oxidative stress in prostate cancer progression, we performed this study in two human prostate cancer cell lines, PC3 and HPV10 (from metastasis and from localized cancer, respectively) and RWPE1 cells derived from normal prostate epithelium. Cells were treated with hydrogen peroxide (H2O2) and PC3 cells were also treated with diethyl maleate (DEM). The effect on cell growth, viability, mitochondria membrane potential and oxidative stress was analysed. Oxidative stress was evaluated based on ROS production, oxidative lesion of lipids (MDA) and on determination of antioxidants, including enzyme activity of glutathione peroxidase (Gl-Px), glutathione reductase (Gl-Red) and on the quantification of glutathione (GSH), glutathione-s-transferase (GST) and total antioxidant status (TAS). PC3 shows higher ROS production but also the highest GSH levels and Gl-Red activity, possibly contributing to oxidative stress resistance. This is also associated with higher mitochondrial membrane potential, TAS and lower lipid peroxidation. On the other hand, we identified Gl-Red activity reduction as a new strategy in overcoming oxidative stress resistance, by inducing H2O2 cytotoxicity. Therefore these results suggest Gl-Red activity reduction as a new potential therapeutic approach, in prostate cancer.
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Affiliation(s)
- Mariana Freitas
- General Pathology Laboratory, Faculty of Medicine, University of Coimbra, Rua Larga, 3004-504 Coimbra, Portugal ; CIMAGO - Centre of Investigation in Environment, Genetics and Oncobiology, Faculty of Medicine, University of Coimbra, Apartado, 9015 3001-301 Coimbra, Portugal ; CNC - Centre of Neurosciences and Cell Biology, Department of Zoology, University of Coimbra, 3004-517 Coimbra, Portugal
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Costa CB, Casalta-Lopes J, Andrade C, Moreira D, Oliveira A, Gonçalves AC, Alves V, Silva T, Dourado M, Nascimento-Costa JM, Sarmento-Ribeiro AB. Farnesyltransferase inhibitors: molecular evidence of therapeutic efficacy in acute lymphoblastic leukemia through cyclin D1 inhibition. Anticancer Res 2012; 32:831-838. [PMID: 22399601] [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: 05/31/2023]
Abstract
BACKGROUND Farnesyltransferase inhibitors have the ability to interfere with various intracellular pathways, reducing cell survival and proliferation. They have become an attractive tool for cancer therapy, namely acute leukemias. In this work, we have studied the efficacy of α-hydroxyfarnesylphosphonic acid (α-HFPA) in CEM (acute T-cell lymphoblastic leukemia) in culture. MATERIALS AND METHODS CEM cells were incubated with α-HFPA at different concentrations; viability and proliferation studies were performed using the trypan blue exclusion assay and cell morphological analysis. Expression of lamin A/C, cyclin D1 and BAD were analyzed by flow cytometry. RESULTS Our results show that α-HFPA significantly decreases Farnesyltransferase activity, reduces cell proliferation and induces cell death through apoptosis in CEM cells, which is correlated with a reduction of cyclin D1 levels. CONCLUSION This study suggests that α-HFPA blocks the cell cycle and induces cell death through apoptosis in CEM cells and may be a therapeutic approach in ALL.
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Affiliation(s)
- Carlos Bruno Costa
- Applied Molecular Biology and Hematology, Faculty of Medicine, University of Coimbra, Coimbra, Portugal
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Machado M, Pires P, Dinis AM, Santos-Rosa M, Alves V, Salgueiro L, Cavaleiro C, Sousa MC. Monoterpenic aldehydes as potential anti-Leishmania agents: activity of Cymbopogon citratus and citral on L. infantum, L. tropica and L. major. Exp Parasitol 2012; 130:223-31. [PMID: 22227102 DOI: 10.1016/j.exppara.2011.12.012] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Accepted: 12/20/2011] [Indexed: 11/17/2022]
Abstract
In order to contribute for the search of new drugs for leishmaniasis, we study the susceptibility of Leishmania infantum, Leishmania tropica and Leishmania major to Cymbopogon citratus essential oil and major compounds, mrycene and citral. C. citratus and citral were the most active inhibiting L. infantum, L. tropica and L. major growth at IC(50) concentrations ranging from 25 to 52 μg/ml and from 34 to 42 μg/ml, respectively. L. infantum promastigotes exposed to essential oil and citral underwent considerable ultrastructural alterations, namely mitochondrial and kinetoplast swelling, autophagosomal structures, disruption of nuclear membrane and nuclear chromatin condensation. C. citratus essential oil and citral promoted the leishmanicidal effect by triggering a programmed cell death. In fact, the leishmanicidal activity was mediated via apoptosis as evidenced by externalization of phosphatidylserine, loss of mitochondrial membrane potential, and cell-cycle arrest at the G(0)/G(1) phase. Taken together, ours findings lead us to propose that citral was responsible for anti-Leishmania activity of the C. citratus and both may represent a valuable source for therapeutic control of leishmaniasis.
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Affiliation(s)
- M Machado
- Faculdade de Farmácia/CEF, Universidade de Coimbra, Azinhaga de Santa Comba, 3030-548 Coimbra, Portugal
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Todo-Bom A, Mota-Pinto A, Alves V, Santos-Rosa M. Aging and asthma - changes in CD45RA, CD29 and CD95 T cells subsets. Allergol Immunopathol (Madr) 2012; 40:14-9. [PMID: 21507549 DOI: 10.1016/j.aller.2011.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2010] [Revised: 01/11/2011] [Accepted: 01/18/2011] [Indexed: 12/19/2022]
Abstract
BACKGROUND Aging is associated with thymus involution leading to a reduction in naive T cells and to an accumulation of effector-memory cells. Apoptosis is a key mechanism to clear the immune system from activated and harmful cells. In asthma the stimulation of T cells by environmental antigens can decrease naive cells and sustain activated cells. The aim of this work was to evaluate the imbalance between CD45RA and CD29 cells during the aging process and their changes in elderly asthma and to evaluate how elderly and chronic diseases like asthma can affect susceptibility to apoptosis. METHODS Elderly and young adult healthy volunteers and elderly asthmatic patients were submitted to skin prick tests, immunoglobulin determination and flow cytometry analyses of CD3, CD4, CD8, CD45RA, CD29, and CD95. RESULTS Serum IgE was increased in allergic patients (p=0.0001). Asthmatics presented an increase in CD4 cells (p<0.05). CD45RA was significantly decreased in elderly individuals (p<0.05) and this decrease was higher in asthmatics (p<0.05). CD29 was increased in elderly healthy individuals compared to the control young group (p=0.0001). A negative correlation between CD29 and CD45RA (p<0.05) was observed. CD95 lymphocytes increased in elderly (p=0.0001) and a positive correlation between age and CD95 (p<0.05) was found. Asthmatic patients showed significant decreases in CD95 (p=0. 0001). CONCLUSIONS Naive cells are key cells in the defence against infections and their decrease in the elderly and in asthma is a bad prognosis factor. The reduction of apoptosis markers can promote the persistence of activated cells involved in chronic conditions.
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