1
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Peixoto VP, Prudêncio C, Vieira M, Sousa SF. Evaluation of the impact of two C5 genetic variants on C5-eculizumab complex stability at the molecular level. J Biomol Struct Dyn 2024:1-10. [PMID: 38529903 DOI: 10.1080/07391102.2024.2331091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 03/11/2024] [Indexed: 03/27/2024]
Abstract
Complement C5 is the target of the monoclonal antibody eculizumab, used in complement dysregulating disorders, like the rare disease Paroxysmal Nocturnal Hemoglobinuria (PNH). PNH is an acquired hematopoietic stem cell condition characterized by aberrant destruction of erythrocytes, chronic hemolytic anemia, and thromboembolism propensity. C5 is a protein component of the complement system which is part of the immune system of the body and plays a prominent role in the destruction of red blood cells, misidentifying them as a threat. This work describes the application of molecular dynamics simulations to the study of the underlying interactions between complement C5 and eculizumab. This study also reveals the importance of single nucleotide polymorphisms on C5 protein concerning the effective inhibition of the mAB, involving the mechanistic events taking place at the interface spots of the complex. The predicted conformational change in the C5 Arg885/His/Cys mutation has implications on the protein's interaction with eculizumab, compromising their compatibility. The acquired insights into the conformational changes, dynamics, flexibility, and interactions shed light on the knowledge of the function of this biomolecule providing answers about the poor response to the treatment in PNH patient carriers of the mutations. By investigating the intricate dynamics, significant connections between C5 and eculizumab can be uncovered. Such insights may aid in the creation of novel compounds or lead to the enhancement of eculizumab's efficacy.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Vanda P Peixoto
- Chemical and Biomolecular Sciences, School of Health, Polytechnic Institute of Porto, Porto, Portugal
- Center for Translational Health and Medical Biotechnology Research (TBIO), Polytechnic Institute of Porto, Porto, Portugal
- LAQV/REQUIMTE, BioSIM - Departamento de Biomedicina, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Cristina Prudêncio
- Chemical and Biomolecular Sciences, School of Health, Polytechnic Institute of Porto, Porto, Portugal
- Center for Translational Health and Medical Biotechnology Research (TBIO), Polytechnic Institute of Porto, Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
| | - Mónica Vieira
- Chemical and Biomolecular Sciences, School of Health, Polytechnic Institute of Porto, Porto, Portugal
- Center for Translational Health and Medical Biotechnology Research (TBIO), Polytechnic Institute of Porto, Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
| | - Sérgio F Sousa
- LAQV/REQUIMTE, BioSIM - Departamento de Biomedicina, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
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2
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Fernandes S, Vieira M, Prudêncio C, Ferraz R. Betulinic Acid for Glioblastoma Treatment: Reality, Challenges and Perspectives. Int J Mol Sci 2024; 25:2108. [PMID: 38396785 PMCID: PMC10889789 DOI: 10.3390/ijms25042108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/25/2024] Open
Abstract
Betulinic acid is a naturally occurring compound that can be obtained through methanolic or ethanolic extraction from plant sources, as well as through chemical synthesis or microbial biotransformation. Betulinic acid has been investigated for its potential therapeutic properties, and exhibits anti-inflammatory, antiviral, antimalarial, and antioxidant activities. Notably, its ability to cross the blood-brain barrier addresses a significant challenge in treating neurological pathologies. This review aims to compile information about the impact of betulinic acid as an antitumor agent, particularly in the context of glioblastoma. Importantly, betulinic acid demonstrates selective antitumor activity against glioblastoma cells by inhibiting proliferation and inducing apoptosis, consistent with observations in other cancer types. Compelling evidence published highlights the acid's therapeutic action in suppressing the Akt/NFκB-p65 signaling cascade and enhancing the cytotoxic effects of the chemotherapeutic agent temozolomide. Interesting findings with betulinic acid also suggest a focus on researching the reduction of glioblastoma's invasiveness and aggressiveness profile. This involves modulation of extracellular matrix components, remodeling of the cytoskeleton, and secretion of proteolytic proteins. Drawing from a comprehensive review, we conclude that betulinic acid formulations as nanoparticles and/or ionic liquids are promising drug delivery approaches with the potential for translation into clinical applications for the treatment and management of glioblastoma.
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Affiliation(s)
- Sílvia Fernandes
- Center for Translational Health and Medical Biotechnology Research (TBIO), School of Health (ESS), Polytechnic University of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal; (S.F.); (C.P.)
- Center for Research on Health and Environment (CISA), School of Health (ESS), Polytechnic University of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal
| | - Mariana Vieira
- Center for Translational Health and Medical Biotechnology Research (TBIO), School of Health (ESS), Polytechnic University of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal; (S.F.); (C.P.)
| | - Cristina Prudêncio
- Center for Translational Health and Medical Biotechnology Research (TBIO), School of Health (ESS), Polytechnic University of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal; (S.F.); (C.P.)
- Ciências Químicas e das Biomoléculas, School of Health (ESS), Polytechnic University of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal
| | - Ricardo Ferraz
- Center for Translational Health and Medical Biotechnology Research (TBIO), School of Health (ESS), Polytechnic University of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal; (S.F.); (C.P.)
- Ciências Químicas e das Biomoléculas, School of Health (ESS), Polytechnic University of Porto, Rua Dr. António Bernardino de Almeida, 400, 4200-072 Porto, Portugal
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
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Louçano M, Coelho A, Chambel SS, Prudêncio C, Cruz CD, Tavares I. Noradrenergic Pathways Involved in Micturition in an Animal Model of Hydrocephalus-Implications for Urinary Dysfunction. Biomedicines 2024; 12:215. [PMID: 38255319 PMCID: PMC10813199 DOI: 10.3390/biomedicines12010215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/08/2024] [Accepted: 01/16/2024] [Indexed: 01/24/2024] Open
Abstract
Hydrocephalus is characterized by enlargement of the cerebral ventricles, accompanied by distortion of the periventricular tissue. Patients with hydrocephalus usually experience urinary impairments. Although the underlying etiology is not fully described, the effects of hydrocephalus in the neuronal network responsible for the control of urination, which involves periventricular areas, including the periaqueductal gray (PAG) and the noradrenergic locus coeruleus (LC). In this study, we aimed to investigate the mechanisms behind urinary dysfunction in rats with kaolin-induced hydrocephalus. For that purpose, we used a validated model of hydrocephalus-the rat injected with kaolin in the cisterna magna-also presents urinary impairments in order to investigate the putative involvement of noradrenergic control from the brain to the spinal cord Onuf's nucleus, a key area in the motor control of micturition. We first evaluated bladder contraction capacity using cystometry. Since our previous characterization of the LC in hydrocephalic animals showed increased levels of noradrenaline, we then evaluated the noradrenergic innervation of the spinal cord's Onuf's nucleus by measuring levels of dopamine β-hydroxylase (DBH). We also evaluated the expression of the c-Fos protooncogene, the most widely used marker of neuronal activation, in the ventrolateral PAG (vlPAG), an area that plays a major role in the control of urination by its indirect control of the LC via pontine micturition center. Hydrocephalic rats showed an increased frequency of bladder contractions and lower minimum pressure. These animals also presented increased DBH levels at the Onuf´s nucleus, along with decreased c-Fos expression in the vlPAG. The present findings suggest that impairments in urinary function during hydrocephalus may be due to alterations in descending noradrenergic modulation. We propose that the effects of hydrocephalus in the decrease of vlPAG neuronal activation lead to a decrease in the control over the LC. The increased availability of noradrenaline production at the LC probably causes an exaggerated micturition reflex due to the increased innervation of the Onuf´s nucleus, accounting for the urinary impairments detected in hydrocephalic animals. The results of the study provide new insights into the neuronal underlying mechanisms of urinary dysfunction in hydrocephalus. Further research is needed to fully evaluate the translational perspectives of the current findings.
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Affiliation(s)
- Marta Louçano
- Unit of Experimental Biology, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (M.L.)
- IBMC-Institute of Molecular and Cell Biology, University of Porto, 4200-135 Porto, Portugal
- I3S-Institute of Investigation and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
- Chemical and Biomolecule Sciences, School of Health, Polytechnic of Porto, 4200-072 Porto, Portugal
| | - Ana Coelho
- Unit of Experimental Biology, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (M.L.)
- IBMC-Institute of Molecular and Cell Biology, University of Porto, 4200-135 Porto, Portugal
- I3S-Institute of Investigation and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Sílvia Sousa Chambel
- Unit of Experimental Biology, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (M.L.)
- IBMC-Institute of Molecular and Cell Biology, University of Porto, 4200-135 Porto, Portugal
- I3S-Institute of Investigation and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Cristina Prudêncio
- I3S-Institute of Investigation and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
- Chemical and Biomolecule Sciences, School of Health, Polytechnic of Porto, 4200-072 Porto, Portugal
- Center for Translational Health and Medical Biotechnology Research (TBIO), Polytechnic of Porto, 4200-072 Porto, Portugal
| | - Célia Duarte Cruz
- Unit of Experimental Biology, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (M.L.)
- IBMC-Institute of Molecular and Cell Biology, University of Porto, 4200-135 Porto, Portugal
- I3S-Institute of Investigation and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
| | - Isaura Tavares
- Unit of Experimental Biology, Department of Biomedicine, Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal; (M.L.)
- IBMC-Institute of Molecular and Cell Biology, University of Porto, 4200-135 Porto, Portugal
- I3S-Institute of Investigation and Innovation in Health, University of Porto, 4200-135 Porto, Portugal
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Campos‐Borges HC, Pinazo‐Duran MD, Andres‐Blasco I, Garcia‐Medina JJ, Zanon‐Moreno V, Gallego‐Martinez A, Salgado‐Borges JM, Duarte L, Prudêncio C. Therapeutic approach in non‐proliferative diabetic retinopathy using antioxidant supplementation. Acta Ophthalmol 2022. [DOI: 10.1111/j.1755-3768.2022.0218] [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: 12/24/2022]
Affiliation(s)
| | - Maria Dolores Pinazo‐Duran
- Ophthalmic Research Unit “Santiago Grisolia"/FISABIO Valencia Spain
- Cellular‐Molecular Ophthalmology Group, Surgery Department University of Valencia Valencia Spain
- Spanish Network Ophthalmic Pathology OFTARED Spain
| | | | - Jose Javier Garcia‐Medina
- Ophthalmic Research Unit “Santiago Grisolia"/FISABIO Valencia Spain
- Spanish Network Ophthalmic Pathology OFTARED Spain
- Universitary Hospital “Morales Meseguer” and Universty of Murcia Murcia Spain
| | - Vicente Zanon‐Moreno
- Ophthalmic Research Unit “Santiago Grisolia"/FISABIO Valencia Spain
- Cellular‐Molecular Ophthalmology Group, Surgery Department University of Valencia Valencia Spain
- Spanish Network Ophthalmic Pathology OFTARED Spain
- Faculty of Health Sciences Valencian International University Valencia Spain
| | | | - Jose Manuel Salgado‐Borges
- Clinsborges Porto Portugal
- Ophthalmology, Lenitudes, Santa Maria da Feira, Portugal Santa Maria da Feira Portugal
| | - Lilianne Duarte
- Centro Hospitalar de Entre o Douro e Vouga EPE Santa Maria da Feira Portugal
| | - Cristina Prudêncio
- I3S‐Health Research and Innovation Institute, Porto Portugal
- Department of Chemistry and Biomolecules Instituto Politecnico do Porto Escola Superior de Saude Porto Portugal
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5
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Silva SG, Pinheiro M, Pereira R, Dias AR, Ferraz R, Prudêncio C, Eaton PJ, Reis S, do Vale MLC. Serine-based surfactants as effective antimicrobial agents against multiresistant bacteria. Biochim Biophys Acta Biomembr 2022; 1864:183969. [PMID: 35588890 DOI: 10.1016/j.bbamem.2022.183969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/12/2022] [Accepted: 05/10/2022] [Indexed: 06/15/2023]
Abstract
The antimicrobial activity of two serine derived gemini cationic surfactants, amide (12Ser)2CON12 and ester (12Ser)2COO12, was tested using sensitive, E. coli ATCC 25922 and S. aureus ATCC 6538, and resistant, E. coli CTX M2, E. coli TEM CTX M9 and S. aureus ATCC 6538 and S. aureus MRSA ATCC 43300 Gram-positive and Gram-negative bacteria strains. Very low MIC values (5 μM) were found for the two resistant strains E.coli TEM CTX M9 and S. aureus MRSA ATCC 43300, in the case of the amide derivative, and for S. aureus MRSA ATCC 43300, in the case of the ester derivative. The interaction of the serine amphiphiles with lipid-model membranes (DPPG and DPPC) was investigated using Langmuir monolayers. A more pronounced effect on the DPPG than on the DPPC monolayer was observed. The effect induced by the surfactants on bacteria membrane was explored by Atomic Force Microscopy. A clear disruption of the bacteria membrane was observed for E. coli TEM CTX M9 upon treatment with (12ser)2CON12, whereas for the S. aureus MRSA few observable changes in cell morphology were found after treatment with either of the two surfactants. The cytotoxicity of the two compounds was assessed by hemolysis assay on human red blood cells (RBC). The compounds were shown to be non-cytotoxic up to 10 μM. Overall, the results reveal a promising potential, in particular of the amide derivative, as antimicrobial agent for two strains of antibiotic resistant bacteria.
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Affiliation(s)
- Sandra G Silva
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
| | - Marina Pinheiro
- LAQV/REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal; Instituto de Investigação em Ciências da Vida e Saúde (ICVS), Escola de Medicina (EM), Universidade do Minho, Braga, Portugal
| | - Rui Pereira
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Ana Rita Dias
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Portugal
| | - Ricardo Ferraz
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal; Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Portugal; I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, 4200-135 Porto, Portugal
| | - Peter J Eaton
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal
| | - Salette Reis
- LAQV/REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - M Luísa C do Vale
- LAQV/REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre s/n, 4169-007 Porto, Portugal.
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6
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Silva AT, Teixeira C, Marques EF, Prudêncio C, Gomes P, Ferraz R. Surfing the Third Wave of Ionic Liquids: A Brief Review on the Role of Surface-Active Ionic Liquids in Drug Development and Delivery. ChemMedChem 2021; 16:2604-2611. [PMID: 33908193 DOI: 10.1002/cmdc.202100215] [Citation(s) in RCA: 12] [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] [Received: 03/27/2021] [Indexed: 12/12/2022]
Abstract
The relevance of ionic liquids (ILs) is now well established in many fields, as their unique properties make them appealing as 1) greener alternatives to organic solvents (first-generation ILs), 2) tunable task-specific materials (second-generation ILs), and 3) multifunctional players in life and pharmaceutical sciences (third-generation ILs). This third wave of ILs encompasses a wide range of compounds, from bioactive molecules with single or even dual therapeutic action, to potential ingredient molecules for drug formulation and transport systems. In this context, the focus of this review is the emergent role of surface-active ionic liquids (SAILs) in drug development and delivery.
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Affiliation(s)
- Ana Teresa Silva
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Cátia Teixeira
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Eduardo F Marques
- CIQ-UP, Centro de Investigação em Química da Universidade do Porto, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Cristina Prudêncio
- CQB/CISA - Ciências Químicas e das Biomoléculas, Escola Superior de Saúde, Politécnico do Porto, Rua Dr. António Bernardino de Almeida 400, 4200-072, Porto, Portugal.,Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, 4200-072, Porto, Portugal
| | - Paula Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Ricardo Ferraz
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal.,CQB/CISA - Ciências Químicas e das Biomoléculas, Escola Superior de Saúde, Politécnico do Porto, Rua Dr. António Bernardino de Almeida 400, 4200-072, Porto, Portugal
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7
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Silva L, Coelho P, Teixeira D, Monteiro A, Pinto G, Soares R, Prudêncio C, Vieira M. Oxidative Stress Modulation and Radiosensitizing Effect of Quinoxaline-1,4-Dioxides Derivatives. Anticancer Agents Med Chem 2020; 20:111-120. [DOI: 10.2174/1871520619666191028091547] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 09/24/2019] [Accepted: 09/25/2019] [Indexed: 12/12/2022]
Abstract
Background:
Quinoxaline-1,4-dioxide (QNX) derivatives are synthetic heterocyclic compounds with
multiple biological and pharmacological effects.
Objective:
In this study, we investigated the oxidative status of quinoxaline-1,4-dioxides derivatives in modulating
melanoma and glioma cell lines, based on previous results from the research group and their capability to
promote cell damage by the production of Reactive Oxygen Species (ROS).
Methods:
Using in vitro cell cultures, the influence of 2-amino-3-cyanoquinoxaline-1,4-dioxide (2A3CQNX), 3-
methyl-2-quinoxalinecarboxamide-1,4-dioxide (3M2QNXC) and 2-hydroxyphenazine-1,4-dioxide (2HF) was
evaluated in metabolic activity, catalase activity, glutathione and 3-nitrotyrosine (3-NT) quantitation by HPLC
in malignant melanocytes (B16-F10, MeWo) and brain tumor cells (GL-261 and BC3H1) submitted to radiotherapy
treatments (total dose of 6 Gy).
Results:
2HF increased the levels of 3-NT in non-irradiated MeWo and glioma cell lines and decreased cell
viability in these cell lines with and without irradiation.
Conclusions:
Quinoxaline-1,4-dioxides derivatives modulate the oxidative status in malignant melanocytes and
brain tumor cell lines and exhibited a potential radiosensitizer in vitro action on the tested radioresistant cell
lines.
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Affiliation(s)
- Liliana Silva
- Centro de Investigacao em Saude Ambiental (CISA), Escola Superior de Saude do Porto, Politecnico do Porto, Porto, Portugal
| | - Pedro Coelho
- Centro de Investigacao em Saude Ambiental (CISA), Escola Superior de Saude do Porto, Politecnico do Porto, Porto, Portugal
| | - Dulce Teixeira
- Centro de Investigacao em Saude Ambiental (CISA), Escola Superior de Saude do Porto, Politecnico do Porto, Porto, Portugal
| | - Armanda Monteiro
- Servico de Radioterapia, Centro Hospitalar de Sao Joao, Porto, Portugal
| | - Gabriela Pinto
- Servico de Radioterapia, Centro Hospitalar de Sao Joao, Porto, Portugal
| | - Raquel Soares
- Departamento de Biomedicina, Unidade de Bioquimica, Faculdade de Medicina, Universidade do Porto, Porto, Portugal
| | - Cristina Prudêncio
- Centro de Investigacao em Saude Ambiental (CISA), Escola Superior de Saude do Porto, Politecnico do Porto, Porto, Portugal
| | - Mónica Vieira
- Centro de Investigacao em Saude Ambiental (CISA), Escola Superior de Saude do Porto, Politecnico do Porto, Porto, Portugal
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8
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Ferraz R, Silva D, Dias AR, Dias V, Santos MM, Pinheiro L, Prudêncio C, Noronha JP, Petrovski Ž, Branco LC. Synthesis and Antibacterial Activity of Ionic Liquids and Organic Salts Based on Penicillin G and Amoxicillin hydrolysate Derivatives against Resistant Bacteria. Pharmaceutics 2020; 12:pharmaceutics12030221. [PMID: 32131540 PMCID: PMC7150922 DOI: 10.3390/pharmaceutics12030221] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [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: 12/31/2019] [Revised: 02/19/2020] [Accepted: 02/19/2020] [Indexed: 12/21/2022] Open
Abstract
The preparation and characterization of ionic liquids and organic salts (OSILs) that contain anionic penicillin G [secoPen] and amoxicillin [seco-Amx] hydrolysate derivatives and their in vitro antibacterial activity against sensitive and resistant Escherichia coli and Staphylococcus aureus strains is reported. Eleven hydrolyzed β-lactam-OSILs were obtained after precipitation in moderate-to-high yields via the neutralization of the basic ammonia buffer of antibiotics with different cation hydroxide salts. The obtained minimum inhibitory concentration (MIC) data of the prepared compounds showed a relative decrease of the inhibitory concentrations (RDIC) in the order of 100 in the case of [C2OHMIM][seco-Pen] against sensitive S. aureus ATCC25923 and, most strikingly, higher than 1000 with [C16Pyr][seco-Amx] against methicillin-resistant Staphylococcus aureus (MRSA) ATCC 43300. These outstanding in vitro results showcase that a straightforward transformation of standard antibiotics into hydrolyzed organic salts can dramatically change the pharmaceutical activity of a drug, including giving rise to potent formulations of antibiotics against deadly bacteria strains.
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Affiliation(s)
- Ricardo Ferraz
- Ciências Químicas e das Biomoléculas (CQB) e Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde do Instituto Politécnico do Porto, 4400-330 Porto, Portugal; (A.R.D.); (V.D.); (C.P.)
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
- Correspondence: (R.F.); (Ž.P.); (L.C.B.)
| | - Dário Silva
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (D.S.); (M.M.S.); (L.P.); (J.P.N.)
| | - Ana Rita Dias
- Ciências Químicas e das Biomoléculas (CQB) e Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde do Instituto Politécnico do Porto, 4400-330 Porto, Portugal; (A.R.D.); (V.D.); (C.P.)
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
| | - Vitorino Dias
- Ciências Químicas e das Biomoléculas (CQB) e Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde do Instituto Politécnico do Porto, 4400-330 Porto, Portugal; (A.R.D.); (V.D.); (C.P.)
| | - Miguel M. Santos
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (D.S.); (M.M.S.); (L.P.); (J.P.N.)
| | - Luís Pinheiro
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (D.S.); (M.M.S.); (L.P.); (J.P.N.)
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas (CQB) e Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde do Instituto Politécnico do Porto, 4400-330 Porto, Portugal; (A.R.D.); (V.D.); (C.P.)
- i3S, Instituto de Inovação e Investigação em Saúde, Universidade do Porto, 4099-002 Porto, Portugal
| | - João Paulo Noronha
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (D.S.); (M.M.S.); (L.P.); (J.P.N.)
| | - Željko Petrovski
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (D.S.); (M.M.S.); (L.P.); (J.P.N.)
- Correspondence: (R.F.); (Ž.P.); (L.C.B.)
| | - Luís C. Branco
- LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; (D.S.); (M.M.S.); (L.P.); (J.P.N.)
- Correspondence: (R.F.); (Ž.P.); (L.C.B.)
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9
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Dias AR, Costa-Rodrigues J, Teixeira C, Prudêncio C, Gomes P, Ferraz R. Ionic Liquids for Topical Delivery in Cancer. Curr Med Chem 2020; 26:7520-7532. [DOI: 10.2174/0929867325666181026110227] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/08/2018] [Accepted: 08/12/2018] [Indexed: 11/22/2022]
Abstract
:
The unique properties of ionic liquids make them quite appealing for diverse applications,
from “green” solvents (1st generation ionic liquids) to finely tuned materials (2nd generation
ionic liquids). A decade ago, a 3rd generation of ionic liquids emerged which is focused
on their prospective clinical applications, either as drugs per se or as adjuvants in drug formulations.
In recent years, research focused on the use of ionic liquids for topical drug delivery
has been increasing and holds great promise towards clinical application against skin cancers.
This article highlights the growing relevance of ionic liquids in medicinal chemistry and pharmaceutical
technology, which is opening new windows of opportunity.
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Affiliation(s)
- Ana Rita Dias
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal
| | - João Costa-Rodrigues
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal
| | - Cátia Teixeira
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal
| | - Paula Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Ricardo Ferraz
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal
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10
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Teixeira S, Santos MM, Ferraz R, Prudêncio C, Fernandes MH, Costa-Rodrigues J, Branco LC. A Novel Approach for Bisphosphonates: Ionic Liquids and Organic Salts from Zoledronic Acid. ChemMedChem 2019; 14:1767-1770. [PMID: 31603287 DOI: 10.1002/cmdc.201900397] [Citation(s) in RCA: 15] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 08/27/2019] [Indexed: 11/06/2022]
Abstract
Novel ionic liquids and organic salts based on mono- or dianionic zoledronate and protonated superbases, choline and n-alkylmethylimidazolium cations, were prepared and characterized by spectroscopic and thermal analyses. Most of the prepared salts display amorphous structures and very high solubility in water and saline solutions, especially the dianionic salts. Among the zoledronate-based ionic compounds, those containing choline [Ch] and methoxyethylmethylimidazolium [C3 OMIM] cations appear to have significant cytotoxicity against human osteosarcoma cells (MG63) and low toxicity toward healthy skin fibroblast cells. Because osteosarcoma is a bone pathology characterized by an increase in bone turnover rate, the results presented herein may be a promising starting point for the development of new ionic pharmaceutical drugs against osteosarcoma.
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Affiliation(s)
- Sónia Teixeira
- Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, Porto, Portugal.,Department of Chemistry, LAQV-REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, Caparica, Portugal
| | - Miguel M Santos
- Department of Chemistry, LAQV-REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, Caparica, Portugal
| | - Ricardo Ferraz
- Ciências Químicas e das Biomoléculas/Centro de Investigação em Saúde e Ambiente (CISA), ESS-Escola Superior de Saú de do Porto do Instituto Politécnico do Porto, Porto, Portugal.,LAQV-REQUIMTE, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas/Centro de Investigação em Saúde e Ambiente (CISA), ESS-Escola Superior de Saú de do Porto do Instituto Politécnico do Porto, Porto, Portugal.,ESS-Escola Superior de Saúde, Porto, Portugal
| | - Maria H Fernandes
- Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, Porto, Portugal.,Chemistry Department, UCIBIO-REQUIMTE, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - João Costa-Rodrigues
- Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, Porto, Portugal.,ESS-Escola Superior de Saúde, Porto, Portugal.,Instituto Politécnico de Viana do Castelo, Escola Superior de Saúde, Porto, Portugal
| | - Luís C Branco
- Department of Chemistry, LAQV-REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Campus de Caparica, Caparica, Portugal
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11
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Oliveira C, Amador P, Prudêncio C, Tomaz CT, Tavares-Ratado P, Fernandes R. ESBL and AmpC β-Lactamases in Clinical Strains of Escherichia coli from Serra da Estrela, Portugal. Medicina (Kaunas) 2019; 55:E272. [PMID: 31212867 PMCID: PMC6632026 DOI: 10.3390/medicina55060272] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/14/2019] [Accepted: 06/03/2019] [Indexed: 02/06/2023]
Abstract
Background and Objectives: Given the considerable spatial, temporal, and ecological factors, heterogeneity, which affects emergency response, persistence, and dissemination of genetic determinants that confer microorganisms their resistance to antibiotics, several authors claim that antibiotics' resistance must be perceived as an ecological problem. The aim of this study was to determine the prevalence of broad-spectrum bla genes, not only Extended-spectrum β-lactamases (ESBL) but also AmpC-types, in clinical strains of Escherichia coli isolated from Portugal (in the highest region of the country, Serra da Estrela) to disclose susceptibility profiles among different genotypes, and to compare the distribution of bla genes expressing broad-spectrum enzymes. Materials and Methods: Clinical strains of Escherichia coli presenting resistance to third generation (3G) cephalosporins and susceptibility to inhibition by clavulanic acid were studied by means of phenotypic and molecular profiling techniques for encoding β-lactamases genes. Results: Strains were mainly isolated from hospital populations (97%). Molecular analysis enabled the detection of 49 bla genes, in which 55% (27/49) were identified as blaOXA-1-like, 33% (16/49) as blaCTX-M-group-1, 10% (5/49) as blaTEM, and 2% (1/49) were identified as genes blaCIT (AmpC). Among all blaOXA-1-like detected, about 59% of strains expressed at least another bla gene. Co-production of β-lactamases was observed in 40% of strains, with the co-production of CTX-M group 1 and OXA-1-like occurring as the most frequent. Conclusions: This is the first study using microorganisms isolated from native people from the highest Portuguese mountain regions, showing an unprecedent high prevalence of genes blaOXA-1-like in this country.
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Affiliation(s)
- Cátia Oliveira
- School of Health, Polytechnic of Porto, 4200 Porto, Portugal.
- Faculty of Biology, University of Vigo, 36310 Vigo, Spain.
- Sousa Martins Hospital, ULS Guarda, 6300 Guarda, Portugal.
| | - Paula Amador
- CERNAS-Research Centre for Natural Resources, Environment and Society, College of Agriculture, Polytechnic of Coimbra, 3045 Coimbra, Portugal.
| | - Cristina Prudêncio
- School of Health, Polytechnic of Porto, 4200 Porto, Portugal.
- i3S-Instituto de Inovação e Investigação em Saúde, University of Porto, 4200 Porto, Portugal.
| | - Cândida T Tomaz
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, 6201 Covilhã, Portugal.
| | - Paulo Tavares-Ratado
- Sousa Martins Hospital, ULS Guarda, 6300 Guarda, Portugal.
- CICS-UBI-Health Sciences Research Centre, University of Beira Interior, 6201 Covilhã, Portugal.
| | - Rúben Fernandes
- School of Health, Polytechnic of Porto, 4200 Porto, Portugal.
- i3S-Instituto de Inovação e Investigação em Saúde, University of Porto, 4200 Porto, Portugal.
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12
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Rocha S, Ferraz R, Prudêncio C, Fernandes MH, Costa-Rodrigues J. Differential effects of antiepileptic drugs on human bone cells. J Cell Physiol 2019; 234:19691-19701. [PMID: 30941778 DOI: 10.1002/jcp.28569] [Citation(s) in RCA: 13] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 02/19/2019] [Accepted: 02/20/2019] [Indexed: 01/10/2023]
Abstract
Antiepileptic drugs (AED) have been associated to in vivo deleterious consequences in bone tissue. The present work aimed to characterize the cellular and molecular effects of five different AED on human osteoclastogenesis and osteblastogenesis. It was observed that the different drugs had the ability to differentially modulate both processes, in a way dependent on the identity and dose of the AED. Shortly, valproic acid stimulated either osteoclastogenesis and osteoblastogenesis, whereas carbamazepine, gabapentin, and lamotrigine revealed an opposite behavior; topiramate elicited a decrease of osteoclast development and an increase in osteoblast differentiation. This is the first report describing the direct effects of different AED on human primary bone cells, which is a very important issue, because these drugs are usually consumed in long-term therapeutics, with acknowledged in vivo effects in bone tissue.
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Affiliation(s)
- Sara Rocha
- Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, U. Porto, Portugal.,Ciências Químicas e das Biomoléculas (CQB) e Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde do Instituto Politécnico do Porto, Portugal
| | - Ricardo Ferraz
- Ciências Químicas e das Biomoléculas (CQB) e Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde do Instituto Politécnico do Porto, Portugal.,REQUIMTE/LAQV, U. Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas (CQB) e Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Saúde do Instituto Politécnico do Porto, Portugal.,i3S, Instituto de Inovação e Investigação em Saúde, Universidade do Porto, Portugal
| | - Maria Helena Fernandes
- Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, U. Porto, Portugal.,REQUIMTE/LAQV, U. Porto, Portugal
| | - João Costa-Rodrigues
- Laboratory for Bone Metabolism and Regeneration, Faculty of Dental Medicine, U. Porto, Portugal.,ESS - Escola Superior de Saúde, P. Porto, Portugal.,Instituto Politécnico de Viana do Castelo, Escola Superior de Saúde, Portugal.,i3S, Instituto de Inovação e Investigação em Saúde, Universidade do Porto, Portugal
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13
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Fonte M, Fagundes N, Gomes A, Ferraz R, Prudêncio C, Araújo MJ, Gomes P, Teixeira C. Development of a synthetic route towards N4,N9-disubstituted 4,9-diaminoacridines: On the way to multi-stage antimalarials. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.052] [Citation(s) in RCA: 2] [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: 10/27/2022]
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14
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Amador P, Fernandes R, Prudêncio C, Duarte I. Prevalence of Antibiotic Resistance Genes in Multidrug-Resistant Enterobacteriaceae on Portuguese Livestock Manure. Antibiotics (Basel) 2019; 8:E23. [PMID: 30871244 PMCID: PMC6466527 DOI: 10.3390/antibiotics8010023] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [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: 01/08/2019] [Revised: 02/22/2019] [Accepted: 02/23/2019] [Indexed: 01/03/2023] Open
Abstract
The exposure of both crop fields and humans to antibiotic-resistant bacteria in animal excreta is an emergent concern of the One Health initiative. This study assessed the contamination of livestock manure from poultry, pig, dairy farms and slaughterhouses in Portugal with resistance determinants. The resistance profiles of 331 Enterobacteriaceae isolates to eight β-lactam (amoxicillin, cefoxitin, cefotaxime, cefpirome, aztreonam, ceftazidime, imipenem and meropenem) and to five non-β-lactam antibiotics (tetracycline (TET), trimethoprim/sulfamethoxazole (SXT), ciprofloxacin (CIP), chloramphenicol (CHL) and gentamicin) was investigated. Forty-nine integron and non-β-lactam resistance genes were also screened for. Rates of resistance to the 13 antibiotics ranged from 80.8% to 0.6%. Multidrug resistance (MDR) rates were highest in pig farm samples (79%). Thirty different integron and resistance genes were identified. These were mainly associated with resistance to CHL (catI and catII), CIP (mainly, qnrS, qnrB and oqx), TET (mainly tet(A) and tet(M)) and SXT (mostly dfrIa group and sul3). In MDR isolates, integron presence and non-β-lactam resistance to TET, SXT and CHL were positively correlated. Overall, a high prevalence of MDR Enterobacteriaceae was found in livestock manure. The high gene diversity for antibiotic resistance identified in this study highlights the risk of MDR spread within the environment through manure use.
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Affiliation(s)
- Paula Amador
- Environment Department, Research Centre for Natural Resources, Environment and Society (CERNAS), College of Agriculture, Polytechnic of Coimbra, 3045-601 Coimbra, Portugal.
| | - Ruben Fernandes
- Department Chemical Sciences and Biomolecules, School Allied Health Sciences, Polytechnic of Porto, 4200-072 Porto, Portugal.
| | - Cristina Prudêncio
- Department Chemical Sciences and Biomolecules, School Allied Health Sciences, Polytechnic of Porto, 4200-072 Porto, Portugal.
| | - Isabel Duarte
- Environment Department, Research Centre for Natural Resources, Environment and Society (CERNAS), College of Agriculture, Polytechnic of Coimbra, 3045-601 Coimbra, Portugal.
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15
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Fernandes SR, Barreiros L, Oliveira RF, Cruz A, Prudêncio C, Oliveira AI, Pinho C, Santos N, Morgado J. Chemistry, bioactivities, extraction and analysis of azadirachtin: State-of-the-art. Fitoterapia 2019; 134:141-150. [PMID: 30738093 DOI: 10.1016/j.fitote.2019.02.006] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [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: 10/15/2018] [Revised: 01/28/2019] [Accepted: 02/03/2019] [Indexed: 12/14/2022]
Abstract
Azadirachta indica A. Juss. (Neem) is an Indian tree recognized for its activity as pesticide, as well as several pharmacological properties. Among the various compounds already isolated and studied from Neem tree, azadirachtin (AZA) was identified as the main bioactive compound. Azadirachtin can be found at different parts of the Neem plant but assumes its maximum concentration at the seed level. This compound features a quite complex chemical structure, which justifies the 20-plus-year difficulty to identify the synthetic pathway that subsequently permitted to carry out its artificial synthesis. Azadirachtin is widely used as a basis for production of biopesticides; nevertheless, other properties have been recognized for this substance, among which the anticancer and antimalarial activity stand out. The methods available for azadirachtin extraction are diverse, including solid-liquid extraction and extraction with solvents at high or low temperatures. Alcohol based solvents are associated with higher extraction yields and are therefore preferred for the isolation of azadirachtin from plant parts. Clean-up of the extracts is generally required for further purification. The highest azadirachtin levels have been obtained from Neem seeds but concentration values present a large variation between batches. Therefore, in addition to extraction procedures, it is essential to establish routine methods for azadirachtin identification and quantification. Chromatography-based techniques are preferably selected for detection and quantification of azadirachtin in plant matrices. Overall, this process will guarantee a future reproducible, safe and effective use of the extracts in formulations for commercial applications.
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Affiliation(s)
- Sara R Fernandes
- Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde, Instituto Politécnico do Porto, Porto, Portugal; LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal
| | - Luisa Barreiros
- Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde, Instituto Politécnico do Porto, Porto, Portugal; LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Porto, Portugal.
| | - Rita F Oliveira
- Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde, Instituto Politécnico do Porto, Porto, Portugal; Secção Autónoma de Ciências da Saúde, Universidade de Aveiro, Aveiro, Portugal
| | - Agostinho Cruz
- Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde, Instituto Politécnico do Porto, Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas, Escola Superior de Saúde, Instituto Politécnico do Porto, Porto, Portugal; i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Ana Isabel Oliveira
- Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde, Instituto Politécnico do Porto, Porto, Portugal
| | - Cláudia Pinho
- Centro de Investigação em Saúde e Ambiente, Escola Superior de Saúde, Instituto Politécnico do Porto, Porto, Portugal
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16
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Almeida J, Costa J, Coelho P, Cea V, Galesio M, Noronha JP, Diniz MS, Prudêncio C, Soares R, Sala C, Fernandes R. Adipocyte proteome and secretome influence inflammatory and hormone pathways in glioma. Metab Brain Dis 2019; 34:141-152. [PMID: 30302719 DOI: 10.1007/s11011-018-0327-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 09/27/2018] [Indexed: 01/09/2023]
Abstract
Gliomas represent the most common primary malignant brain tumors in adults, with an extremely poor prognosis. Among several risk factors, lifestyle was also recently identified as a major risk factor for the development of primary glioma. In the present study, we explore the relationship between obesity and glioma in a cellular model. Thus, we have study the influence of adipocytes secretome on glioma cell line GL261. Using the 3T3-L1 adipocyte cell line, and its conditioned medium (adipokines-enriched medium), we showed that adipocyte-released factors relate with glioma angiogenic, growth, hormones and metabolic behavior by MALDI-TOF-MS and proteomic array analysis. In a first view, STI1, hnRNPs and PGK1 are under expressed on CGl. Similarly, both carbonic anhydrase and aldose reductase are even suppressed in glioma cells that grown under adipokines-enriched environment. Contrariwise, RFC1, KIF5C, ANXA2, N-RAP and RACK1 are overexpressed in GL261 cell the in the presence of the adipokines-enriched medium. We further identified the factors that are released by adipocyte cells, and revealed that several pro-inflammatory and angiogenic factors, such as IL-6, IL-11, LIF, PAI-1, TNF-α, endocan, HGF, VEGF IGF-I, were secreted to the medium into a high extent, whereas TIMP-1 and SerpinE1 were under expressed on CGl. This study discloses an interesting in vitro model for the study of glioma biology under a "obesity" environment, that can be explored for the understanding of cancer cells biology, for the search of biomarkers, prognostic markers and therapeutic approaches.
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Affiliation(s)
- J Almeida
- School of Health, Polytechnic of Porto, Porto, Portugal
- Department of Functional Biology and Health Sciences, University of Vigo, Vigo, Spain
| | - J Costa
- School of Health, Polytechnic of Porto, Porto, Portugal
| | - P Coelho
- School of Health, Polytechnic of Porto, Porto, Portugal
- Unit of Metabolism, Nutrition and Endocrinology, i3S, University of Porto, Porto, Portugal
| | - V Cea
- CNR Neuroscience Institute Milan, and Department of Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - M Galesio
- REQUIMTE, Department of Chemistry, Faculty of Sciences and Technology, Centre for Fine Chemistry and Biotechnology, NOVA University, Fort Lauderdale, FL, USA
| | - J P Noronha
- REQUIMTE, Department of Chemistry, Faculty of Sciences and Technology, Centre for Fine Chemistry and Biotechnology, NOVA University, Fort Lauderdale, FL, USA
| | - M S Diniz
- REQUIMTE, Department of Chemistry, Faculty of Sciences and Technology, Centre for Fine Chemistry and Biotechnology, NOVA University, Fort Lauderdale, FL, USA
| | - C Prudêncio
- School of Health, Polytechnic of Porto, Porto, Portugal
- Department of Functional Biology and Health Sciences, University of Vigo, Vigo, Spain
| | - R Soares
- Unit of Metabolism, Nutrition and Endocrinology, i3S, University of Porto, Porto, Portugal
- Department of Biomedicine, Unit of Biochemistry, Faculty of Medicine, University of Porto, Porto, Portugal
| | - C Sala
- CNR Neuroscience Institute Milan, and Department of Biotechnology and Translational Medicine, University of Milan, Milan, Italy
| | - Rúben Fernandes
- School of Health, Polytechnic of Porto, Porto, Portugal.
- Unit of Metabolism, Nutrition and Endocrinology, i3S, University of Porto, Porto, Portugal.
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17
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Gomes A, Teixeira C, Ferraz R, Prudêncio C, Gomes P. Wound-Healing Peptides for Treatment of Chronic Diabetic Foot Ulcers and Other Infected Skin Injuries. Molecules 2017; 22:E1743. [PMID: 29057807 PMCID: PMC6151519 DOI: 10.3390/molecules22101743] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [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: 08/29/2017] [Revised: 10/06/2017] [Accepted: 10/12/2017] [Indexed: 12/20/2022] Open
Abstract
As the incidence of diabetes continues to increase in the western world, the prevalence of chronic wounds related to this condition continues to be a major focus of wound care research. Additionally, over 50% of chronic wounds exhibit signs and symptoms that are consistent with localized bacterial biofilms underlying severe infections that contribute to tissue destruction, delayed wound-healing and other serious complications. Most current biomedical approaches for advanced wound care aim at providing antimicrobial protection to the open wound together with a matrix scaffold (often collagen-based) to boost reestablishment of the skin tissue. Therefore, the present review is focused on the efforts that have been made over the past years to find peptides possessing wound-healing properties, towards the development of new and effective wound care treatments for diabetic foot ulcers and other skin and soft tissue infections.
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Affiliation(s)
- Ana Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal.
| | - Cátia Teixeira
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal.
| | - Ricardo Ferraz
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal.
- Ciências Químicas e das Biomoléculas, Escola Superior de Saúde-Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 400, P-4200-072 Porto, Portugal.
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas, Escola Superior de Saúde-Instituto Politécnico do Porto, Rua Dr. António Bernardino de Almeida 400, P-4200-072 Porto, Portugal.
- i3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen 208, P-4200-135 Porto, Portugal.
| | - Paula Gomes
- LAQV-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre 687, P-4169-007 Porto, Portugal.
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Ferraz R, Pinheiro M, Gomes A, Teixeira C, Prudêncio C, Reis S, Gomes P. Effects of novel triple-stage antimalarial ionic liquids on lipid membrane models. Bioorg Med Chem Lett 2017; 27:4190-4193. [DOI: 10.1016/j.bmcl.2017.07.006] [Citation(s) in RCA: 19] [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: 04/30/2017] [Revised: 06/28/2017] [Accepted: 07/01/2017] [Indexed: 11/17/2022]
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19
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Coelho P, Silva L, Faria I, Vieria M, Monteiro A, Pinto G, Prudêncio C, Fernandes R, Soares R. Adipocyte Secretome Increases Radioresistance of Malignant Melanocytes by Improving Cell Survival and Decreasing Oxidative Status. Radiat Res 2017; 187:581-588. [PMID: 28362167 DOI: 10.1667/rr14551.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Radiotherapy is a treatment option for the majority of malignancies. However, because melanoma is known to be radioresistant, the use of ionizing radiation as an adjuvant therapy in cutaneous melanoma patients is ineffective. Obesity has now been recognized as a risk factor for melanoma. High adiposity is generally associated with a more pro-oxidative status. Oxidative stress is a major player in radiation therapy and also a common link between obesity and cancer. Several adipocyte-released proteins are known to have a role in controlling cellular growth and pro-survival signaling. For that reason, we investigated the influence of 3T3-L1 mature adipocyte secretome in B16-F10 malignant melanocyte radiosensitivity. We evaluated B16-F10 cell survival and redox homeostasis when exposed to four daily doses of ionizing radiation (2 Gy per day) up to a total of 8 Gy in a medical linear accelerator. B16-F10 melanocytes exhibited slight alterations in survival, catalase activity, nitrative stress and total oxidant concentration after the first 2 Gy irradiation. The motility of the melanocytes was also delayed by ionizing radiation. Subsequent irradiations of the malignant melanocytes led to more prominent reductions in overall survival. Remarkably, 3T3-L1 adipocyte-secreted molecules were able to increase the viability and migration of melanocytes, as well as lessen the pro-oxidant burden induced by both the single and cumulative X-ray doses. In vitro adipocyte-released factors protected B16-F10 malignant melanocytes from both oxidative stress and loss of viability triggered by radiation, enhancing the radioresistant phenotype of these cells with a concomitant activation of the AKT signaling pathway. These results both help to elucidate how obesity influences melanoma radioresistance and support the usage of conventional medical linear accelerators as a valid model for the in vitro radiobiological study of tumor cell lines.
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Affiliation(s)
- Pedro Coelho
- a Department of Biochemistry, Faculty of Medicine, University of Porto, Portugal.,b Instituto de Inovação e Investigação em Saúde, University of Porto, Portugal.,c Ciências Químicas e Biomoléculas, CISA
| | - Liliana Silva
- b Instituto de Inovação e Investigação em Saúde, University of Porto, Portugal.,c Ciências Químicas e Biomoléculas, CISA
| | - Isabel Faria
- d Radioterapia, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Portugal
| | - Mónica Vieria
- b Instituto de Inovação e Investigação em Saúde, University of Porto, Portugal.,c Ciências Químicas e Biomoléculas, CISA
| | - Armanda Monteiro
- e Serviço de Radioterapia, Centro Hospitalar de São João, Porto, Portugal
| | - Gabriela Pinto
- e Serviço de Radioterapia, Centro Hospitalar de São João, Porto, Portugal
| | - Cristina Prudêncio
- b Instituto de Inovação e Investigação em Saúde, University of Porto, Portugal.,c Ciências Químicas e Biomoléculas, CISA
| | - Rúben Fernandes
- b Instituto de Inovação e Investigação em Saúde, University of Porto, Portugal.,c Ciências Químicas e Biomoléculas, CISA
| | - Raquel Soares
- a Department of Biochemistry, Faculty of Medicine, University of Porto, Portugal.,b Instituto de Inovação e Investigação em Saúde, University of Porto, Portugal
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Teixeira D, Prudêncio C, Vieira M. Development of a new HPLC-based method for 3-nitrotyrosine quantification in different biological matrices. J Chromatogr B Analyt Technol Biomed Life Sci 2017; 1046:48-57. [DOI: 10.1016/j.jchromb.2017.01.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 12/18/2016] [Accepted: 01/22/2017] [Indexed: 01/08/2023]
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Abstract
Among the many challenges that the pharmaceutical industry currently faces is the need to develop innovative and effective therapies. The investigation of alternative and effective therapies against cancer is a current goal of the pharmaceutical industry. Ionic liquids (ILs) have emerged recently as a topic of study by researchers in the pharmaceutical industry in their search for new therapeutic agents. By definition, ILs are organic salts with melting points below 100 °C that are composed only by ions. Their main advantage lies in the numerous possible combinations of cations and anions, which allow adjustments in their physicochemical properties. The combination between ILs and active pharmaceutical ingredients (APIs) may improve the properties of APIs. In addition, the antitumor properties of these compounds have been described. Several studies have reported the use of ILs in biomedical applications as therapeutic agents, namely as antitumor agents. This review describes the recent proposed applications of ILs as antitumor agents.
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Affiliation(s)
- Ana Rita Dias
- Ciências Químicas e das Biomoléculas / Centro de Investigação em Saúde e Ambiente (CISA), ESS-Escola Superior de Saúde do Porto do Instituto Politécnico do Porto, Portugal, Rua Dr. António Bernardino de Almeida, 400, 4200-072, Porto, Portugal
| | - João Costa-Rodrigues
- Laboratório de Farmacologia e Biocompatibilidade Celular, Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-393, Porto, Portugal.,ESS-Escola Superior de Saúde do Porto do Instituto Politécnico do Porto, (Portugal).,Instituto Politécnico de Viana do Castelo, Escola Superior de Saúde, Portugal
| | - Maria Helena Fernandes
- Laboratório de Farmacologia e Biocompatibilidade Celular, Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-393, Porto, Portugal
| | - Ricardo Ferraz
- Ciências Químicas e das Biomoléculas / Centro de Investigação em Saúde e Ambiente (CISA), ESS-Escola Superior de Saúde do Porto do Instituto Politécnico do Porto, Portugal, Rua Dr. António Bernardino de Almeida, 400, 4200-072, Porto, Portugal.,UCIBIO-REQUIMTE, Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade do Porto, Rua do Campo Alegre 687, 4169-007, Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas / Centro de Investigação em Saúde e Ambiente (CISA), ESS-Escola Superior de Saúde do Porto do Instituto Politécnico do Porto, Portugal, Rua Dr. António Bernardino de Almeida, 400, 4200-072, Porto, Portugal.,I3S-Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal
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Oliveira S, Coelho P, Prudêncio C, Vieira M, Soares R, Guerreiro SG, Fernandes R. Melanoma and obesity: Should antioxidant vitamins be addressed? Life Sci 2016; 165:83-90. [DOI: 10.1016/j.lfs.2016.09.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 09/20/2016] [Accepted: 09/22/2016] [Indexed: 01/14/2023]
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Teixeira D, Fernandes R, Prudêncio C, Vieira M. 3-Nitrotyrosine quantification methods: Current concepts and future challenges. Biochimie 2016; 125:1-11. [PMID: 26921794 DOI: 10.1016/j.biochi.2016.02.011] [Citation(s) in RCA: 52] [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: 12/07/2015] [Accepted: 02/22/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND Measurement of 3-nitrotyrosine (3-NT) in biological samples can be used as a biomarker of nitrosative stress, since it is very stable and suitable for analysis. Increased 3-NT levels in biological samples have been associated with several physiological and pathological conditions. Different methods have been described for the detection and quantification of this molecule, such as (i) immunological methods; (ii) liquid chromatography, namely high-pressure liquid chromatography (HPLC)-based methods that use ultraviolet-visible (UV/VIS) absorption, electrochemical (ECD) and diode array (DAD) detection, liquid chromatography-mass spectrometry (LC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS); (iii) gas chromatography, such as gas chromatography-mass spectrometry (GC-MS) and gas chromatography-tandem mass spectrometry (GC-MS/MS). METHODS A literature review on nitrosative stress, protein nitration, as well as 3-NT quantification methods was carried out. RESULTS This review covers the different methods for analysis of 3-NT that have been developed during the last years as well as the latest advances in this field. Overall, all methods present positive and negative aspects, although it is clear that chromatography-based methods present good sensitivity and specificity. Regarding this, GC-based methods exhibit the highest sensibility in the quantification of 3-NT, although it requires a prior time consuming derivatization step. Conversely, HPLC does not require such derivatization step, despite being not as accurate as GC. CONCLUSION It becomes clear that all the methods described during this literature review, although accurate for 3-NT quantification, need to be improved regarding both sensitivity and specificity. Moreover, optimization of the protocols that have been described is clearly needed.
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Affiliation(s)
- Dulce Teixeira
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Portugal
| | - Rúben Fernandes
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Portugal; I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Portugal; I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal
| | - Mónica Vieira
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Portugal; I3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Portugal.
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Coelho P, Almeida J, Prudêncio C, Fernandes R, Soares R. Effect of Adipocyte Secretome in Melanoma Progression and Vasculogenic Mimicry. J Cell Biochem 2016; 117:1697-706. [PMID: 26666522 DOI: 10.1002/jcb.25463] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 12/11/2015] [Indexed: 12/12/2022]
Abstract
Obesity, favored by the modern lifestyle, acquired epidemic proportions nowadays. Obesity has been associated with various major causes of death and morbidity including malignant neoplasms. This increased prevalence has been accompanied by a worldwide increase in cutaneous melanoma incidence rates during the last decades. Obesity involvement in melanoma aetiology has been recognized, but the implicated mechanisms remain unclear. In the present study, we address this relationship and investigate the influence of adipocytes secretome on B16-F10 and MeWo melanoma cell lines. Using the 3T3-L1 adipocyte cell line, as well as ex vivo subcutaneous (SAT) and visceral (VAT) adipose tissue conditioned medium, we were able to show that adipocyte-released factors play a dual role in increasing melanoma cell overall survival, both by enhancing proliferation and decreasing apoptosis. B16-F10 cell migration and cell-cell and cell-matrix adhesion capacity were predominantly enhanced in the presence of SAT and VAT released factors. Melanocytes morphology and melanin content were also altered by exposure to adipocyte conditioned medium disclosing a more dedifferentiated phenotype of melanocytes. In addition, exposure to adipocyte-secreted molecules induced melanocytes to rearrange, on 3D cultures, into vessel-like structures, and generate characteristic vasculogenic mimicry patterns. These findings are corroborated by the released factors profile of 3T3-L1, SAT, and VAT assessed by microarrays, and led us to highlight the mechanisms by which adipose secretome from sub-cutaneous or visceral depots promote melanoma progression. J. Cell. Biochem. 117: 1697-1706, 2016. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Pedro Coelho
- Department of Biochemistry, Faculty of Medicine, University of Porto, Porto, Portugal.,Ciências Químicas e Biomoléculas, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal.,Instituto de Inovação e Investigação em Saúde, Universidade do Porto, Porto, Portugal
| | - Joana Almeida
- Ciências Químicas e Biomoléculas, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal.,Instituto de Inovação e Investigação em Saúde, Universidade do Porto, Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e Biomoléculas, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal.,Instituto de Inovação e Investigação em Saúde, Universidade do Porto, Porto, Portugal
| | - Rúben Fernandes
- Ciências Químicas e Biomoléculas, Escola Superior de Tecnologia da Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal.,Instituto de Inovação e Investigação em Saúde, Universidade do Porto, Porto, Portugal
| | - Raquel Soares
- Department of Biochemistry, Faculty of Medicine, University of Porto, Porto, Portugal.,Instituto de Inovação e Investigação em Saúde, Universidade do Porto, Porto, Portugal
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25
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Ferraz R, Noronha J, Murtinheira F, Nogueira F, Machado M, Prudêncio M, Parapini S, D'Alessandro S, Teixeira C, Gomes A, Prudêncio C, Gomes P. Primaquine-based ionic liquids as a novel class of antimalarial hits. RSC Adv 2016. [DOI: 10.1039/c6ra10759a] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ionic liquids derived from active pharmaceutical ingredients may open new perspectives towards low-cost rescuing of classical antimalarial drugs.
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26
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Ferraz R, Costa-Rodrigues J, Fernandes MH, Santos MM, Marrucho IM, Rebelo LPN, Prudêncio C, Noronha JP, Petrovski Ž, Branco LC. Antitumor Activity of Ionic Liquids Based on Ampicillin. ChemMedChem 2015; 10:1480-3. [PMID: 26190053 DOI: 10.1002/cmdc.201500142] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [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: 04/01/2015] [Revised: 05/05/2015] [Indexed: 11/09/2022]
Abstract
Significant antiproliferative effects against various tumor cell lines were observed with novel ampicillin salts as ionic liquids. The combination of anionic ampicillin with appropriate ammonium, imidazolium, phosphonium, and pyridinium cations yielded active pharmaceutical ingredient ionic liquids (API-ILs) that show potent antiproliferative activities against five different human cancer cell lines: T47D (breast), PC3 (prostate), HepG2 (liver), MG63 (osteosarcoma), and RKO (colon). Some API-ILs showed IC50 values between 5 and 42 nM, activities that stand in dramatic contrast to the negligible cytotoxic activity level shown by the ampicillin sodium salt. Moreover, very low cytotoxicity against two primary cell lines-skin (SF) and gingival fibroblasts (GF)-indicates that the majority of these API-ILs are nontoxic to normal human cell lines. The most promising combination of antitumor activity and low toxicity toward healthy cells was observed for the 1-hydroxyethyl-3-methylimidazolium-ampicillin pair ([C2 OHMIM][Amp]), making this the most suitable lead API-IL for future studies.
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Affiliation(s)
- Ricardo Ferraz
- Departamento de Química, REQUIMTE-CQFB, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica (Portugal).,Ciências Químicas e das Biomoléculas, Escola Superior de Tecnologia da Saúde do Porto do Instituto Politécnico do Porto, Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia (Portugal)
| | - João Costa-Rodrigues
- Laboratório de Farmacologia e Biocompatibilidade Celular, Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto (Portugal).
| | - Maria H Fernandes
- Laboratório de Farmacologia e Biocompatibilidade Celular, Faculdade de Medicina Dentária, Universidade do Porto, Rua Dr. Manuel Pereira da Silva, 4200-393 Porto (Portugal)
| | - Miguel M Santos
- Departamento de Química, REQUIMTE-CQFB, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica (Portugal)
| | - Isabel M Marrucho
- Instituto de Tecnologia Química e Biológica, ITQB, Universidade Nova de Lisboa, Av. da República Estação Agronómica Nacional, 2780-157 Oeiras (Portugal)
| | - Luís Paulo N Rebelo
- Instituto de Tecnologia Química e Biológica, ITQB, Universidade Nova de Lisboa, Av. da República Estação Agronómica Nacional, 2780-157 Oeiras (Portugal)
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas, Escola Superior de Tecnologia da Saúde do Porto do Instituto Politécnico do Porto, Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia (Portugal).,Centro de Farmacologia e Biopatologia Química (U38-FCT), Faculdade de Medicina da Universidade do Porto (FMUP) (Portugal)
| | - João Paulo Noronha
- Departamento de Química, REQUIMTE-CQFB, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica (Portugal)
| | - Željko Petrovski
- Departamento de Química, REQUIMTE-CQFB, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica (Portugal).
| | - Luís C Branco
- Departamento de Química, REQUIMTE-CQFB, Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa, 2829-516 Caparica (Portugal).
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Pereira JA, Pessoa AM, Cordeiro MNDS, Fernandes R, Prudêncio C, Noronha JP, Vieira M. Quinoxaline, its derivatives and applications: A State of the Art review. Eur J Med Chem 2015. [PMID: 25011559 DOI: 10.1016/j.ejmech.2014.06.058.] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2022]
Abstract
Quinoxaline derivatives are an important class of heterocycle compounds, where N replaces some carbon atoms in the ring of naphthalene. Its molecular formula is C8H6N2, formed by the fusion of two aromatic rings, benzene and pyrazine. It is rare in natural state, but their synthesis is easy to perform. In this review the State of the Art will be presented, which includes a summary of the progress made over the past years in the knowledge of the structure and mechanism of the quinoxaline and quinoxaline derivatives, associated medical and biomedical value as well as industrial value. Modifying quinoxaline structure it is possible to obtain a wide variety of biomedical applications, namely antimicrobial activities and chronic and metabolic diseases treatment.
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Affiliation(s)
- Joana A Pereira
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal
| | - Ana M Pessoa
- REQUIMTE, Rua do Campo Alegre, 4150-180 Porto, Portugal; Escola Superior de Estudos Industriais e Gestão do Instituto Politécnico do Porto (ESEIG-IPP), 4480-876 Vila do Conde, Portugal
| | - M Natália D S Cordeiro
- Escola Superior de Estudos Industriais e Gestão do Instituto Politécnico do Porto (ESEIG-IPP), 4480-876 Vila do Conde, Portugal
| | - Rúben Fernandes
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal; Centro de Farmacologia e Biopatologia Química (U38-FCT), Faculdade de Medicina da Universidade do Porto (FMUP), Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal; Centro de Farmacologia e Biopatologia Química (U38-FCT), Faculdade de Medicina da Universidade do Porto (FMUP), Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal; USF Abel Salazar, ARS Norte, Portugal
| | - João Paulo Noronha
- REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Mónica Vieira
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal; REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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Pereira JA, Pessoa AM, Cordeiro MNDS, Fernandes R, Prudêncio C, Noronha JP, Vieira M. Quinoxaline, its derivatives and applications: A State of the Art review. Eur J Med Chem 2014; 97:664-72. [PMID: 25011559 DOI: 10.1016/j.ejmech.2014.06.058] [Citation(s) in RCA: 249] [Impact Index Per Article: 24.9] [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: 03/21/2014] [Revised: 06/25/2014] [Accepted: 06/25/2014] [Indexed: 02/07/2023]
Abstract
Quinoxaline derivatives are an important class of heterocycle compounds, where N replaces some carbon atoms in the ring of naphthalene. Its molecular formula is C8H6N2, formed by the fusion of two aromatic rings, benzene and pyrazine. It is rare in natural state, but their synthesis is easy to perform. In this review the State of the Art will be presented, which includes a summary of the progress made over the past years in the knowledge of the structure and mechanism of the quinoxaline and quinoxaline derivatives, associated medical and biomedical value as well as industrial value. Modifying quinoxaline structure it is possible to obtain a wide variety of biomedical applications, namely antimicrobial activities and chronic and metabolic diseases treatment.
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Affiliation(s)
- Joana A Pereira
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal
| | - Ana M Pessoa
- REQUIMTE, Rua do Campo Alegre, 4150-180 Porto, Portugal; Escola Superior de Estudos Industriais e Gestão do Instituto Politécnico do Porto (ESEIG-IPP), 4480-876 Vila do Conde, Portugal
| | - M Natália D S Cordeiro
- Escola Superior de Estudos Industriais e Gestão do Instituto Politécnico do Porto (ESEIG-IPP), 4480-876 Vila do Conde, Portugal
| | - Rúben Fernandes
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal; Centro de Farmacologia e Biopatologia Química (U38-FCT), Faculdade de Medicina da Universidade do Porto (FMUP), Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal; Centro de Farmacologia e Biopatologia Química (U38-FCT), Faculdade de Medicina da Universidade do Porto (FMUP), Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal; USF Abel Salazar, ARS Norte, Portugal
| | - João Paulo Noronha
- REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Mónica Vieira
- Ciências Químicas e Biomoléculas, Centro de Investigação em Saúde e Ambiente (CISA), Escola Superior de Tecnologia da Saúde do Instituto Politécnico do Porto (ESTSP-IPP), Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal; REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal.
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Ferraz R, Teixeira V, Rodrigues D, Fernandes R, Prudêncio C, Noronha JP, Petrovski Ž, Branco LC. Antibacterial activity of Ionic Liquids based on ampicillin against resistant bacteria. RSC Adv 2014. [DOI: 10.1039/c3ra44286a] [Citation(s) in RCA: 76] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Vieira M, Pinheiro C, Fernandes R, Noronha JP, Prudêncio C. Antimicrobial activity of quinoxaline 1,4-dioxide with 2- and 3-substituted derivatives. Microbiol Res 2013; 169:287-93. [PMID: 23928379 DOI: 10.1016/j.micres.2013.06.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 06/11/2013] [Accepted: 06/12/2013] [Indexed: 10/26/2022]
Abstract
Quinoxaline is a chemical compound that presents a structure that is similar to quinolone antibiotics. The present work reports the study of the antimicrobial activity of quinoxaline N,N-dioxide and some derivatives against bacterial and yeast strains. The compounds studied were quinoxaline-1,4-dioxide (QNX), 2-methylquinoxaline-1,4-dioxide (2MQNX), 2-methyl-3-benzoylquinoxaline-1,4-dioxide (2M3BenzoylQNX), 2-methyl-3-benzylquinoxaline-1,4-dioxide (2M3BQNX), 2-amino-3-cyanoquinoxaline-1,4-dioxide (2A3CQNX), 3-methyl-2-quinoxalinecarboxamide-1,4-dioxide (3M2QNXC), 2-hydroxyphenazine-N,N-dioxide (2HF) and 3-methyl-N-(2-methylphenyl)quinoxalinecarboxamide-1,4-dioxide (3MN(2MF)QNXC). The prokaryotic strains used were Staphylococcus aureus ATCC 6538, S. aureus ATCC 6538P, S. aureus ATCC 29213, Escherichia coli ATCC 25922, E. coli S3R9, E. coli S3R22, E. coli TEM-1 CTX-M9, E. coli TEM-1, E. coli AmpC Mox-2, E. coli CTX-M2 e E. coli CTX-M9. The Candida albicans ATCC 10231 and Saccharomyces cerevisiae PYCC 4072 were used as eukaryotic strains. For the compounds that presented activity using the disk diffusion method, the minimum inhibitory concentration (MIC) was determined. The alterations of cellular viability were evaluated in a time-course assay. Death curves for bacteria and growth curves for S. cerevisiae PYCC 4072 were also accessed. The results obtained suggest potential new drugs for antimicrobial activity chemotherapy since the MIC's determined present low values and cellular viability tests show the complete elimination of the bacterial strain. Also, the cellular viability tests for the eukaryotic model, S. cerevisiae, indicate low toxicity for the compounds tested.
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Affiliation(s)
- Mónica Vieira
- REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal; Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologias da Saúde, Instituto Politécnico do Porto, Rua Valente Perfeito, 322, 4400-330 Vila Nova de Gaia, Portugal.
| | - Cátia Pinheiro
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologias da Saúde, Instituto Politécnico do Porto, Rua Valente Perfeito, 322, 4400-330 Vila Nova de Gaia, Portugal
| | - Rúben Fernandes
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologias da Saúde, Instituto Politécnico do Porto, Rua Valente Perfeito, 322, 4400-330 Vila Nova de Gaia, Portugal; Centro de Farmacologia e Biopatologia Química (U38-FCT), Faculdade de Medicina, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal
| | - João Paulo Noronha
- REQUIMTE/CQFB, Departamento de Química, FCT, Universidade Nova de Lisboa, 2829-516 Caparica, Portugal
| | - Cristina Prudêncio
- Ciências Químicas e das Biomoléculas, Centro de Investigação em Saúde e Ambiente, Escola Superior de Tecnologias da Saúde, Instituto Politécnico do Porto, Rua Valente Perfeito, 322, 4400-330 Vila Nova de Gaia, Portugal; Centro de Farmacologia e Biopatologia Química (U38-FCT), Faculdade de Medicina, Universidade do Porto, Alameda Prof. Hernâni Monteiro, 4200-319 Porto, Portugal; CHUC, Centro Hospitalar da Universidade de Coimbra, Coimbra, Portugal
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Ferraz R, Branco LC, Marrucho IM, Araújo JMM, Rebelo LPN, da Ponte MN, Prudêncio C, Noronha JP, Petrovski Ž. Development of novel ionic liquids based on ampicillin. Med Chem Commun 2012. [DOI: 10.1039/c2md00269h] [Citation(s) in RCA: 89] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ferraz R, Branco LC, Prudêncio C, Noronha JP, Petrovski Z. Ionic liquids as active pharmaceutical ingredients. ChemMedChem 2011; 6:975-85. [PMID: 21557480 DOI: 10.1002/cmdc.201100082] [Citation(s) in RCA: 222] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2011] [Revised: 03/18/2011] [Indexed: 11/11/2022]
Abstract
Ionic liquids (ILs) are ionic compounds that possess a melting temperature below 100 °C. Their physical and chemical properties are attractive for various applications. Several organic materials that are now classified as ionic liquids were described as far back as the mid-19th century. The search for new and different ILs has led to the progressive development and application of three generations of ILs: 1) The focus of the first generation was mainly on their unique intrinsic physical and chemical properties, such as density, viscosity, conductivity, solubility, and high thermal and chemical stability. 2) The second generation of ILs offered the potential to tune some of these physical and chemical properties, allowing the formation of "task-specific ionic liquids" which can have application as lubricants, energetic materials (in the case of selective separation and extraction processes), and as more environmentally friendly (greener) reaction solvents, among others. 3) The third and most recent generation of ILs involve active pharmaceutical ingredients (API), which are being used to produce ILs with biological activity. Herein we summarize recent developments in the area of third-generation ionic liquids that are being used as APIs, with a particular focus on efforts to overcome current hurdles encountered by APIs. We also offer some innovative solutions in new medical treatment and delivery options.
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Affiliation(s)
- Ricardo Ferraz
- Ciências Químicas e das Biomoléculas, Escola Superior de Tecnologia da Saúde do Porto do Instituto Politécnico do Porto, Rua Valente Perfeito 322, 4400-330 Vila Nova de Gaia, Portugal.
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Fernandes R, Prudêncio C. Post-surgical wound infections involving Enterobacteriaceae with reduced susceptibility to β-lactams in two Portuguese hospitals. Int Wound J 2010; 7:508-14. [PMID: 21073683 DOI: 10.1111/j.1742-481x.2010.00723.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
The post-surgical period is often critical for infection acquisition. The combination of patient injury and environmental exposure through breached skin add risk to pre-existing conditions such as drug or depressed immunity. Several factors such as the period of hospital staying after surgery, base disease, age, immune system condition, hygiene policies, careless prophylactic drug administration and physical conditions of the healthcare centre may contribute to the acquisition of a nosocomial infection. A purulent wound can become complicated whenever antimicrobial therapy becomes compromised. In this pilot study, we analysed Enterobacteriaceae strains, the most significant gram-negative rods that may occur in post-surgical skin and soft tissue infections (SSTI) presenting reduced β-lactam susceptibility and those presenting extended-spectrum β-lactamases (ESBL). There is little information in our country regarding the relationship between β-lactam susceptibility, ESBL and development of resistant strains of microorganisms in SSTI. Our main results indicate Escherichia coli and Klebsiella spp. are among the most frequent enterobacteria (46% and 30% respectively) with ESBL production in 72% of Enterobacteriaceae isolates from SSTI. Moreover, coinfection occurred extensively, mainly with Pseudomonas aeruginosa and Methicillin-resistant Staphylococcus aureus (18% and 13%, respectively). These results suggest future research to explore if and how these associations are involved in the development of antibiotic resistance.
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Affiliation(s)
- Rúben Fernandes
- Chemical and Biomolecular Sciences, School of Allied Health Sciences, Porto Polytechnic, Portugal.
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Fernandes R, Gestoso A, Freitas JM, Santos P, Prudêncio C. High resistance to fourth-generation cephalosporins among clinical isolates of Enterobacteriaceae producing extended-spectrum beta-lactamases isolated in Portugal. Int J Antimicrob Agents 2008; 33:184-5. [PMID: 18926667 DOI: 10.1016/j.ijantimicag.2008.07.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2008] [Revised: 07/23/2008] [Accepted: 07/24/2008] [Indexed: 10/21/2022]
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Fernandes R, Vieira M, Ferraz R, Prudêncio C. Bloodstream infections caused by multidrug-resistant Enterobacteriaceae: report from two Portuguese hospitals. J Hosp Infect 2008; 70:93-5. [DOI: 10.1016/j.jhin.2008.05.007] [Citation(s) in RCA: 7] [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] [Received: 05/14/2008] [Accepted: 05/15/2008] [Indexed: 10/21/2022]
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Fernandes R, Correia R, Fonte R, Prudêncio C. Human salivary α-amylase (EC.3.2.1.1) activity and periodic acid and schiff reactive (PAS) staining: A useful tool to study polysaccharides at an undergraduate level. Biochem Mol Biol Educ 2006; 34:294-299. [PMID: 21638699 DOI: 10.1002/bmb.2006.494034042636] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Health science education is presently in discussion throughout Europe due to the Bologna Declaration. Teaching basic sciences such as biochemistry in a health sciences context, namely in allied heath education, can be a challenging task since the students of preclinical health sciences are not often convinced that basic sciences are clinically valuable (J. R. Rudland, S. C. Rennie (2003) The determination of the relevance of basic sciences learning objectives to clinical practice using a questionnaire survey, Med. Educ. (Oxf.) 37, 962-965; E. C. Wragg (2003) How can we determine the relevance of basic sciences learning objectives to clinical practice?, Med. Educ. (Oxf.) 37, 948-949). Thus, nowadays teachers are compelled to use their imagination to be able to elaborate laboratory sessions aiming for the understanding of theoretical concepts that are also clinically related: in other words, basic concepts and skills that underlie the competencies demanded of the future health professional. In the present work, we describe a set of laboratory sessions implemented in the discipline of biochemistry, belonging to the first year of several courses of allied health professionals, which can also be implemented in other health sciences courses. These sessions focus on the characteristics and properties of carbohydrates. The exercises we propose include two different laboratory practical sessions based on a histopathological routine technique known as periodic acid and Schiff reactive that is currently used to detect sugar metabolic and tumor diseases (J. M. T. Rivera, C. T. López, B. C. Segui (2001) Bioquímica Estructural: Conceptos y Tests, Tebar Flores, Madrid). The methodology described enables the demonstration of some biochemical properties of polysaccharides, namely animal and vegetable, and the catalytic activity of the human salivary α-amylase (EC.3.2.1.1) enzyme. A further comparison between α-amylase activity in vitro and in situ is also possible by the proposed methodology. Additionally, to this extent, a comparison between the results of the learning improvement that occurred after the implementation of this tool is presented.
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Affiliation(s)
- Ruben Fernandes
- Departmento de Ciências Biomédicas e Centro de Investigação em Saúde e Ambiente da Escola Superior de Tecnologias da Saúde do Porto (ESTSP), Instituto Politécnico do Porto (IPP), 4000-294 Porto, Portugal; Departamento de Bioquímica, Genetica e Inmunología de la Universidad de Vigo, 26200 Vigo, España
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Prudêncio C, Abrantes B, Lopes I, Tavares MA. Structural and functional cellular alterations underlying the toxicity of methamphetamine in rat retina and prefrontal cortex. Ann N Y Acad Sci 2002; 965:522-8. [PMID: 12105127 DOI: 10.1111/j.1749-6632.2002.tb04193.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The consumption of illicit drugs is an increasing problem in contemporary societies, and is one of the major causes of death and illness all over the world. Methamphetamine is among the drugs more widely used. Although evidence for a role of reactive species--especially reactive oxygen species (ROS) and apoptotic events--has been shown, the mechanism(s) underlying the cellular toxicity induced by this drug is not yet fully identified. In this context the elucidation of the cytotoxic effects induced by methamphetamine in rat frontal cortex and retina, which compromise cell viability and ultimately result in cell death, can further contribute to the understanding of its mechanism of action. This knowledge may provide new insights into the development of new therapeutic approaches to prevent or ameliorate deleterious alterations of the nervous system. The use of epifluorescence microscopy associated with different fluorescent probes, markers of structural and/or functional cell parameters, can be used as a powerful tool to carry out those studies, in particular, the viability probes propidium iodide (PI) to assess plasma membrane integrity and fluorescein diacetate (FDA), which can monitor intracellular esterase activity and/or pH. In a preliminary study, the kinetic assessment of cellular changes induced by different drug concentrations (0, 1.2, 3, and 6 mM) allowed detection of dose-dependent alterations that are observed earlier in the retina. In fact, in the retina it was possible to monitor alterations (at 4 h of incubation) both in plasma membrane integrity and in esterase activity and/or pH for the lowest drug concentration (1.2 mM). In the prefrontal cortex these changes were only visible for drug concentrations > or = 3 mM. This work is a novel approach to the mechanisms of action of illicit drugs in the central nervous system and will provide the foundations and guidelines for further investigations in the context of tolerance, dependence, and addiction.
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Affiliation(s)
- Cristina Prudêncio
- Instituto de Investigação em Ciências da Vida e da Saúde, Escola de Ciências da Saúde, Universidade do Minho, Braga, Portugal
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Abstract
BACKGROUND Cell drug resistance can be due to the presence of active efflux pumps (AEP). Identification of yeast cells with a resistance phenotype is important either from a clinical, agricultural or biotechnological point of view. Rapid and reliable methods to detect AEP can be therefore very useful. METHODS Some yeast cells change their staining by calcein-AM, BCECF-AM, rhodamine 123 and DiOC(5), when pretreated with verapamil, CCCP or ATP depletion, or when pretreated with specific antimicrobial agents. This fact may be interpreted as an indication of the presence/absence of AEP. Six yeast species were tested with a flow cytometric method (FCM) and an epifluorescence microscopic method (EFM), and ten other species were evaluated only by EFM. The minimum inhibitory concentration (MIC) of penconazol, benomyl and cycloheximide for Saccharomyces cerevisiae and Kluyveromyces marxianus, were determined by growth inhibition on solid medium and were compared to the staining changes detected by FCM. RESULTS The FCM and the EFM allowed the detection of AEP in all the yeast species tested. High MIC values for a drug were related with the presence of at least one AEP indicated by the cytometric data. CONCLUSIONS The FCM revealed to be a robust assay whereas the EFM can be used as a preliminary test. It is possible to identify resistance/sensitivity patterns in yeast cells through cytometric detection methods of different efflux pumping systems.
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Affiliation(s)
- C Prudêncio
- Centro de Ciências do Ambiente - Departamento de Biologia, Universidade do Minho, Braga Codex, Portugal
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Prudêncio C, Sansonetty F, Côrte-Real M. Flow cytometric assessment of cell structural and functional changes induced by acetic acid in the yeasts Zygosaccharomyces bailii and Saccharomyces cerevisiae. Cytometry 1998; 31:307-13. [PMID: 9551607 DOI: 10.1002/(sici)1097-0320(19980401)31:4<307::aid-cyto11>3.0.co;2-u] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Flow cytometry (FCM) was used with different viability dyes to assess changes in cell structure and function induced by acetic acid (AA) in populations of Zygosaccharomyces bailii (AA resistant) and Saccharomyces cerevisiae (AA sensitive). Kinetic changes in esterase activity, intracellular dye processing, and membrane integrity were monitored, and to detect those changes we used three assays involving fluorescein diacetate hydrolysis, FUN-1 processing, and propidium iodide exclusion, respectively. In S. cerevisiae, the decrease in the ability to process FUN-1 preceded the decrease in esterase activity, and there was loss of cell membrane integrity after incubation with AA. In Z. bailii, with higher AA concentrations, there was a similar decrease in the ability to process FUN-1, which also preceded the loss of cell membrane integrity. Changes in esterase activity in this yeast induced by AA treatment could not be monitored because the changes occurred independently of the presence of the acid. For control samples (untreated cells killed with 10% v/v of AA), the percentages of nonaltered cells as estimated by FCM and percentages of viable cells as estimated by colony forming unit (CFU) counts were identical. However, for cell samples treated for short periods with 3% (v/v) or less of AA, none of the dyes produced FCM results comparable to those produced by CFU counts.
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Affiliation(s)
- C Prudêncio
- Departamento de Biologia, Universidade do Minho, Braga, Portugal
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