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Silva MA, Nascimento Júnior JCD, Thomaz DV, Maia RT, Costa Amador V, Tommaso G, Coelho GD. Comparative homology of Pleurotus ostreatus laccase enzyme: Swiss model or Modeller? J Biomol Struct Dyn 2023; 41:8927-8940. [PMID: 36310115 DOI: 10.1080/07391102.2022.2138975] [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: 07/15/2022] [Accepted: 10/17/2022] [Indexed: 11/05/2022]
Abstract
Laccases stand out in the industrial context due to their versatile biotechnological applications. Although these enzymes are frequently investigated, currently, Pleurotus ostreatus laccase structural model is unknown. Therefore, this research aims to predict and validate a P. ostreatus laccase theoretical model by means of comparative homology. The laccase target's primary structure (AOM73725.1) was obtained from the NCBI database, the model was predicted from homologous structures obtained from the PDB (PDB-ID: 5A7E, 2HRG, 4JHU, 1GYC) using the Swiss-Model and Modeller, and was refined in GalaxyRefine. The models were validated using PROCHECK, VERIFY 3D, ERRAT, PROVE and QMEAN Z-score servers. Moreover, molecular docking between the laccase model (Lacc4MN) and ABTS was performed on AutoDock Vina. The models that were generated by the Modeller showed superior stereochemical and structural characteristics to those predicted by the Swiss Model. The refinement made it difficult to stabilize the copper atoms which are typical of laccases. The Lacc4MN model showed the interactions between the amino acids in the active site of the laccase and the copper atoms, thereby hinting the stabilization of the metal through electrostatic interactions with histidine and cysteine. The molecular docking between Lacc4MN and ABTS showed negative free energy and the formation of two hydrogen bonds involving the amino acids ASP 208 and GLY 268, and a Pi-sulfur bond between residue HIS 458 and ABTS, which demonstrates the typical catalytic functionality of laccases. Furthermore, the theoretical model Lacc4MN presented stereochemical and structural characteristics that allow its use in silico tests.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Marco Antonio Silva
- Laboratory of Environmental Biotechnology, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - José Cordeiro do Nascimento Júnior
- Center for Water Resources and Environmental Studies, São Carlos School of Engineering, University of São Paulo, São Carlos, São Paulo, Brazil
| | - Douglas Vieira Thomaz
- National Enterprise for nanoScience and nanoTechnology (NEST), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy
| | - Rafael Trindade Maia
- Academic Unit of Rural Education; Center for Sustainable Development of the Semi-Arid, Federal University of Campina Grande, Sumé, Paraiba, Brazil
| | - Vinícius Costa Amador
- Bioscience Center, Genetics Department, Federal University of Pernambuco, Recife, Brazil
| | - Giovana Tommaso
- Laboratory of Environmental Biotechnology, Faculty of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Glauciane Danusa Coelho
- Academic Unit of Biotechnology Engineering; Center for Sustainable Development of the Semi-Arid, Federal University of Campina Grande, Sumé, Paraiba, Brazil
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Dongiovanni P, Meroni M, Casati S, Goldoni R, Thomaz DV, Kehr NS, Galimberti D, Del Fabbro M, Tartaglia GM. Salivary biomarkers: novel noninvasive tools to diagnose chronic inflammation. Int J Oral Sci 2023; 15:27. [PMID: 37386003 DOI: 10.1038/s41368-023-00231-6] [Citation(s) in RCA: 4] [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: 11/24/2022] [Revised: 05/23/2023] [Accepted: 06/05/2023] [Indexed: 07/01/2023] Open
Abstract
Several chronic disorders including type 2 diabetes (T2D), obesity, heart disease and cancer are preceded by a state of chronic low-grade inflammation. Biomarkers for the early assessment of chronic disorders encompass acute phase proteins (APP), cytokines and chemokines, pro-inflammatory enzymes, lipids and oxidative stress mediators. These substances enter saliva through the blood flow and, in some cases, there is a close relation between their salivary and serum concentration. Saliva can be easily collected and stored with non-invasive and cost-saving procedures, and it is emerging the concept to use it for the detection of inflammatory biomarkers. To this purpose, the present review aims to discuss the advantages and challenges of using standard and cutting-edge techniques to discover salivary biomarkers which may be used in diagnosis/therapy of several chronic diseases with inflammatory consequences with the pursuit to possibly replace conventional paths with detectable soluble mediators in saliva. Specifically, the review describes the procedures used for saliva collection, the standard approaches for the measurement of salivary biomarkers and the novel methodological strategies such as biosensors to improve the quality of care for chronically affected patients.
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Affiliation(s)
- Paola Dongiovanni
- Medicine and Metabolic Diseases, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Marica Meroni
- Medicine and Metabolic Diseases, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sara Casati
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.
| | - Riccardo Goldoni
- Department of Electronics, Information and Bioengineering (DEIB), Politecnico di Milano, Milan, Italy
- Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni, CNR, Pisa, Italy
| | - Douglas Vieira Thomaz
- Laboratory of Medicinal Pharmaceutical Chemistry, Faculty of Pharmacy, Federal University of Goiás, Goiânia, GO, Brazil
| | - Nermin Seda Kehr
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- Department of Chemistry, İzmir Institute of Technology, Gülbahçe Kampüsü, Urla İzmir, Turkey
| | - Daniela Galimberti
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- Neurology-Neurodegenerative Diseases, Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Massimo Del Fabbro
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- UOC Maxillo-Facial Surgery and Dentistry Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - Gianluca M Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
- UOC Maxillo-Facial Surgery and Dentistry Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, Milan, Italy
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Goldoni R, Thomaz DV, Strambini L, Tumedei M, Dongiovanni P, Isola G, Tartaglia G. Quality-by-Design R&D of a Novel Nanozyme-Based Sensor for Saliva Antioxidant Capacity Evaluation. Antioxidants (Basel) 2023; 12:antiox12051120. [PMID: 37237985 DOI: 10.3390/antiox12051120] [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: 05/03/2023] [Revised: 05/14/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Oxidative stress is one of the main causes of cell damage, leading to the onset of several diseases, and antioxidants represent a barrier against the production of reactive species. Saliva is receiving increasing interest as a promising biofluid to study the onset of diseases and assess the overall health status of an individual. The antioxidant capacity of saliva can be a useful indicator of the health status of the oral cavity, and it is nowadays evaluated mainly through spectroscopic methods that rely on benchtop machines and liquid reagents. We developed a low-cost screen-printed sensor based on cerium oxide nanoparticles that can be used to assess the antioxidant capacity of biofluids as an alternative to traditional methods. The sensor development process was investigated via a quality-by-design approach to identify the most critical parameters of the process for further optimization. The sensor was tested in the detection of ascorbic acid, which is used as an equivalent in the assessment of overall antioxidant capacity. The LoDs ranged from 0.1147 to 0.3528 mM, while the recoveries varied from 80% to 121.1%, being therefore comparable with those of the golden standard SAT test, whose recovery value was 96.3%. Therefore, the sensor achieved a satisfactory sensitivity and linearity in the range of clinical interest for saliva and was validated against the state-of-the-art equipment for antioxidant capacity evaluation.
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Affiliation(s)
- Riccardo Goldoni
- Department of Electronics, Information and Bioengineering (DEIB), Politecnico Di Milano, 20133 Milan, Italy
- CNR-Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni, 56122 Pisa, Italy
| | - Douglas Vieira Thomaz
- National Enterprise for NanoScience and NanoTechnology (NEST), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy
| | - Lucanos Strambini
- CNR-Istituto di Elettronica e di Ingegneria dell'Informazione e delle Telecomunicazioni, 56122 Pisa, Italy
| | - Margherita Tumedei
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan, 20100 Milan, Italy
- UOC Maxillo-Facial Surgery and Dentistry Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Paola Dongiovanni
- Medicine and Metabolic Diseases Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Gaetano Isola
- Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy
| | - Gianluca Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, School of Dentistry, University of Milan, 20100 Milan, Italy
- UOC Maxillo-Facial Surgery and Dentistry Fondazione IRCCS Cà Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
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Oliveira LDAR, da Silva ACG, Thomaz DV, Brandão F, da Conceição EC, Valadares MC, Bara MTF, Silveira D. The Potential of Vouacapanes from Pterodon emarginatus Vogel Against COVID-19 Cytokine Storm. Adv Pharm Bull 2023; 13:150-159. [PMID: 36721819 PMCID: PMC9871284 DOI: 10.34172/apb.2023.016] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 09/01/2021] [Accepted: 09/28/2021] [Indexed: 02/03/2023] Open
Abstract
Purpose: The emergence of the COVID-19 pandemic has led to the search for potential therapeutic responses for various aspects of this disease. Fruits of Pterodon emarginatus Vogel (Fabaceae), sucupira, have been used in Brazilian traditional medicine because of their anti-inflammatory properties, which have been proven in vivo, in vitro, and in silico. Therefore, the aim of this work is to evaluate P. emarginatus oleoresin and isolated diterpenes by in vitro anti-inflammatory models. Methods: In this study, the mechanisms underlying the anti-inflammatory activity of P. emarginatus oleoresin and vouacapanes 6α,19β-diacetoxy-7β,14β-dihydroxyvouacapan (V1), 6α-acetoxy-7β,14β-dihydroxyvouacapan (V2), and methyl 6α-acetoxy-7β-hydroxyvouacapan-17β-oate (V3) were investigated in HaCaT cells. Results: Oleoresin, V2, and V3 inhibited phospholipase A2 (30.78%, 24.96%, and 77.64%, respectively). Both vouacapanes also inhibited the expression of COX-2 (28.3% and 33.17%, respectively). The production of interleukin 6 (IL-6) was inhibited by oleoresin by 35.47%. However, oleoresin did not interfere with Nrf-2 expression or IL-8 production. Conclusion: The results support the ethnomedicinal use of P. emarginatus oleoresin as an anti-inflammatory herbal medicine, and also highlight P. emarginatus oleoresin and isolated vouacapanes as an attractive therapeutic approach for COVID-19 through the reduction or chronological control of the inflammatory mediators IL-6, cyclooxygenase-2 (COX-2), phospholipase A2, and INF-y (indirectly) during the SARS-CoV-2 infection process.
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Affiliation(s)
- Leandra de Almeida Ribeiro Oliveira
- Faculty of Pharmacy, Federal University of Goiás, P.O. Box 131, Goiânia, GO, Brazil.,Faculty of Health Sciences, University of Brasilia, Campus Darcy Ribeiro, Asa Norte, 70910-000, DF, Brazil
| | | | | | - Fabiana Brandão
- Faculty of Health Sciences, University of Brasilia, Campus Darcy Ribeiro, Asa Norte, 70910-000, DF, Brazil
| | | | | | - Maria Tereza Freitas Bara
- Faculty of Pharmacy, Federal University of Goiás, P.O. Box 131, Goiânia, GO, Brazil.,Corresponding Authors: Dâmaris Silveira and Maria Teresa Freitas Bara, and
| | - Dâmaris Silveira
- Faculty of Health Sciences, University of Brasilia, Campus Darcy Ribeiro, Asa Norte, 70910-000, DF, Brazil.,Corresponding Authors: Dâmaris Silveira and Maria Teresa Freitas Bara, and
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Neto SLM, Coelho GD, Ballaminut N, Matheus DR, Thomaz DV, Machado KMG. Application of Deconica castanella ligninolytic enzymatic system in the degradation of hexachlorobenzene in soil. Biotechnol Appl Biochem 2022; 69:2437-2444. [PMID: 34837656 DOI: 10.1002/bab.2293] [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: 06/23/2021] [Accepted: 11/23/2021] [Indexed: 12/27/2022]
Abstract
Hexachlorobenzene (HCB) is a pollutant still found in the environment despite being widely banned. Considering that basidiomycetes are useful to degrade a variety of organochlorinated pollutants, we therefore report the influence of HCB on the ligninolytic enzymatic system of Deconica castanella. The inoculum was prepared with sugarcane bagasse and soybean flour and was added in soil with and without HCB (2000 mg kg soil-1 ), 5% emulsion containing soybean oil and Tween 20 at proportion 9:1, v:v; with 70% moisture at 25°C. Fungal biomass was quantified by widely acknowledged growth biomarker ergosterol. The extraction of the enzymatic complex was performed and laccase, Mn-dependent peroxidase (MnP), and lignin peroxidase (LiP) activities were determined. Furthermore, HCB and its metabolites were quantified by gas chromatography and chlorides by potentiometric titration. Results evidenced that HCB did not interfere in fungal growth, though the only detected enzymatic activity was laccase. MnP and Lip were not detected during D. castanella growth in soil. The peak of laccase enzymatic activity occurred in the presence of HCB. In addition, the laccase exhibited thermostability. Therefore, we hereby shed light on the role of laccase in the degradation of HCB by an efficient low-cost and environmentally safe detoxification mechanism.
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Affiliation(s)
- Sergio Luiz Moreira Neto
- Phytotaxonomy Division, Mycology Section, Institute of Botany of the Secretariat of the Environment of the State of São Paulo, São Paulo, SP, Brazil
| | - Glauciane Danusa Coelho
- Academic Unit of Biotechnology Engineering and Bioprocesses, Center for Sustainable Development of the Semi-Arid, Federal University of Campina Grande, Sumé, PB, Brazil
| | - Nara Ballaminut
- Phytotaxonomy Division, Mycology Section, Institute of Botany of the Secretariat of the Environment of the State of São Paulo, São Paulo, SP, Brazil
| | - Dácio Roberto Matheus
- Center for Engineering, Modeling and Applied Social Sciences, Federal University of ABC, Santo André, SP, Brazil
| | - Douglas Vieira Thomaz
- Faculty of Pharmacy, Federal University of Goias, Setor Leste Universitário, Goiânia, GO, Brazil
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Moreira LKDS, Turones LC, Campos HM, Nazareth AM, Thomaz DV, Gil EDS, Ghedini PC, Rocha FFD, Menegatti R, Fajemiroye JO, Costa EA. LQFM212, a piperazine derivative, exhibits potential antioxidant effect as well as ameliorates LPS-induced behavioral, inflammatory and oxidative changes. Life Sci 2022; 312:121199. [PMID: 36402170 DOI: 10.1016/j.lfs.2022.121199] [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: 09/20/2022] [Revised: 11/11/2022] [Accepted: 11/12/2022] [Indexed: 11/19/2022]
Abstract
AIMS Oxidative stress, impaired antioxidant defense and neuroinflammation are often associated with the onset and progression of neuropsychiatric diseases. Conversely, several piperazine compounds presents beneficial neuropharmacological effects as well as antioxidant activity, and some derivatives combine both activities. LQFM212 (2,6-di-tert-butyl-4-((4-(2-hydroxyethyl)piperazin-1-yl)methyl)phenol) was synthesized to produce effects on CNS and to have an additional antioxidant effect. Previous preclinical tests have been shown anxiolytic- and antidepressant-like effects of LQFM212 in mice. Herein, the main objective was to verify the possible antioxidant potential and the effects of LQFM212 against behavioral changes, inflammatory and oxidative markers induced by lipopolysaccharide (LPS). MAIN METHODS Initially, antioxidant potential of LQFM212 was evaluated by electrochemical assays. Afterwards, the effects of oral treatment with LQFM212 were evaluated in mice using LPS-induced models of systemic or local inflammation. KEY FINDINGS In LPS-induced neuroinflammation, LQFM212 treatment reverted changes caused by LPS, demonstrated by attenuated anxiogenic- and depressive-like behaviors, reduced pro-inflammatory cytokines (TNF-α and IL-1β) and increased anti-inflammatory cytokines (IL-4 and IL-10) on serum, and also improved oxidative stress-related changes (levels of nitrite, malondialdehyde, glutathione and carbonylated protein, and superoxide dismutase, catalase, myeloperoxidase and cholinesterase activities) on brain cortex and hippocampus. However, LQFM212 treatment did not attenuate the inflammatory changes in LPS-induced pleurisy model. SIGNIFICANCE LQFM212 presents antioxidant activity and ameliorates behavioral, inflammatory and oxidative changes after LPS-induced neuroinflammation model. These effects do not seem to be secondary to a peripheral anti-inflammatory action of LQFM212, since this compound failed to attenuate the inflammatory changes in LPS-induced pleurisy model.
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Affiliation(s)
- Lorrane Kelle da Silva Moreira
- Laboratory of Pharmacology of Natural and Synthetic Products, Institute of Biological Sciences, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Larissa Córdova Turones
- Laboratory of Pharmacology of Natural and Synthetic Products, Institute of Biological Sciences, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Hericles Mesquita Campos
- Laboratory of Biochemical and Molecular Pharmacology, Institute of Biological Sciences, Federal University of Goias, Campus Samambaia, Goiânia, GO, Brazil
| | - Aline Martins Nazareth
- Laboratory of Pharmacology of Natural and Synthetic Products, Institute of Biological Sciences, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Douglas Vieira Thomaz
- Laboratory of Medicinal Pharmaceutical Chemistry, Faculty of Pharmacy, Federal University of Goiás, Goiânia, GO, Brazil
| | - Eric de Souza Gil
- Laboratory of Medicinal Pharmaceutical Chemistry, Faculty of Pharmacy, Federal University of Goiás, Goiânia, GO, Brazil
| | - Paulo César Ghedini
- Laboratory of Biochemical and Molecular Pharmacology, Institute of Biological Sciences, Federal University of Goias, Campus Samambaia, Goiânia, GO, Brazil
| | - Fábio Fagundes da Rocha
- Department of Physiological Sciences, Institute of Biology, Federal Rural University of Rio de Janeiro, Seropédica, RJ, Brazil
| | - Ricardo Menegatti
- Laboratory of Medicinal Pharmaceutical Chemistry, Faculty of Pharmacy, Federal University of Goiás, Goiânia, GO, Brazil
| | - James Oluwagbamigbe Fajemiroye
- Laboratory of Pharmacology of Natural and Synthetic Products, Institute of Biological Sciences, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Elson Alves Costa
- Laboratory of Pharmacology of Natural and Synthetic Products, Institute of Biological Sciences, Federal University of Goiás, Campus Samambaia, Goiânia, GO, Brazil.
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Brambilla E, Locarno S, Gallo S, Orsini F, Pini C, Farronato M, Thomaz DV, Lenardi C, Piazzoni M, Tartaglia G. Poloxamer-Based Hydrogel as Drug Delivery System: How Polymeric Excipients Influence the Chemical-Physical Properties. Polymers (Basel) 2022; 14:polym14173624. [PMID: 36080699 PMCID: PMC9460339 DOI: 10.3390/polym14173624] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
Thermogelling amphiphilic block copolymers have been widely investigated in the development of pharmaceutical drug carriers. In particular, thermosensitive gels based on poloxamer 407 (P407) have great potential for periodontal disease treatment, thanks to their ability to be liquid at room temperature and become viscous gels at body temperature. However, some problems, related to short in situ residence time, reduce their feasible clinical use. Thus, in order to improve the effective applicability of these materials, we studied how P407 thermogels are affected by the pH and by the inclusion of different hydrophilic polymers, used as excipients for increasing the gel stiffness. For this scope, a complete chemical-physical characterization of the synthesized gels is provided, in terms of determination of sol-gel transition temperature, viscosity and erosion degree. The data are correlated according to a statistical multivariate approach based on Principal Component Analysis and their mucoadhesion properties are also tested by Tapping mode-Atomic Force Microscopy (TM-AFM) imaging. Finally, we studied how the different P407 formulations are able to influence the release pathway of two antibacterial drugs (i.e., chlorhexidine digluconate and doxycycline hyclate) largely used in oral diseases.
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Affiliation(s)
- Elisa Brambilla
- Department of Pharmaceutical Sciences, Section of General and Organic Chemistry Section “A. Marchesini”, University of Milan, 20133 Milan, Italy
| | - Silvia Locarno
- Department of Physics “Aldo Pontremoli”, University of Milan, 20133 Milan, Italy
- Correspondence:
| | - Salvatore Gallo
- Department of Physics “Aldo Pontremoli”, University of Milan, 20133 Milan, Italy
| | - Francesco Orsini
- Department of Physics “Aldo Pontremoli”, University of Milan, 20133 Milan, Italy
| | - Carolina Pini
- Department of Physics “Aldo Pontremoli”, University of Milan, 20133 Milan, Italy
| | - Marco Farronato
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20100 Milan, Italy
| | - Douglas Vieira Thomaz
- National Enterprise for NanoScience and NanoTechnology (NEST), Istituto Nanoscienze-CNR and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy
| | - Cristina Lenardi
- Department of Physics “Aldo Pontremoli”, University of Milan, 20133 Milan, Italy
| | - Marco Piazzoni
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20100 Milan, Italy
| | - Gianluca Tartaglia
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, 20100 Milan, Italy
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Goldoni R, Thomaz DV, Di Giulio T, Malitesta C, Mazzotta E. An insight into polyscopoletin electrosynthesis by a quality-by-design approach. J Mater Sci 2022; 57:12161-12175. [PMID: 35755421 PMCID: PMC9215150 DOI: 10.1007/s10853-022-07349-8] [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] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
UNLABELLED Scopoletin (SP) as a functional monomer for electropolymerization has recently been investigated in the context of molecularly imprinted polymers for biosensing applications. Herein we describe an in-depth analysis of the mechanisms involved in the electropolymerization of SP toward the optimization of the experimental conditions for applications in sensor studies. PolySP films have been in situ synthesized on a standard glassy carbon electrodes by varying three independent experimental parameters, and the output of the analysis has been evaluated in terms of the resulting electroactive area and surface coverage. A quality-by-design approach including design-of-experiments principles and response surface methodology produced unbiased observations on the most relevant parameters to be controlled during the electropolymerization of SP. By combining the output of electroactive area and surface overage, we highlighted a strong dependence on the monomer concentration and scan rate. Thus, an appropriate selection of these two parameters should be sought to have an optimal electropolymerization process, leading to uniform films and homogeneous surface behavior. This study shows that the application of multi-factorial analysis in a comprehensive design of experiments allows the systematic study of polymer electrosynthesis. Therefore, this research is expected to guide further efforts in the electropolymerization of several functional monomers. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10853-022-07349-8.
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Affiliation(s)
- Riccardo Goldoni
- Department of Electronics, Information and Bioengineering (DEIB), Politecnico Di Milano, 20133 Milan, Italy
- National Research Council, Institute of Electronics, Computer and Telecommunication Engineering (CNR-IEIIT), 20133 Milan, Italy
| | - Douglas Vieira Thomaz
- Laboratorio di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Università del Salento, 73100 Lecce, Italy
| | - Tiziano Di Giulio
- Laboratorio di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Università del Salento, 73100 Lecce, Italy
| | - Cosimino Malitesta
- Laboratorio di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Università del Salento, 73100 Lecce, Italy
| | - Elisabetta Mazzotta
- Laboratorio di Chimica Analitica, Dipartimento di Scienze e Tecnologie Biologiche e Ambientali (Di.S.Te.B.A.), Università del Salento, 73100 Lecce, Italy
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Moreira LKDS, Silva RR, da Silva DM, Mendes MAS, de Brito AF, de Carvalho FS, Sanz G, Rodrigues MF, da Silva ACG, Thomaz DV, de Oliveira V, Vaz BG, Lião LM, Valadares MC, Gil EDS, Costa EA, Noël F, Menegatti R. Anxiolytic- and antidepressant-like effects of new phenylpiperazine derivative LQFM005 and its hydroxylated metabolite in mice. Behav Brain Res 2022; 417:113582. [PMID: 34536431 DOI: 10.1016/j.bbr.2021.113582] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/26/2021] [Accepted: 09/10/2021] [Indexed: 11/19/2022]
Abstract
The current treatments available for anxiety and depression are only palliative. Full remission has remained elusive, characterizing unmet medical needs. In the scope of an academic drug discovery program, we describe here the design, synthesis, in vitro metabolism prediction and pharmacological characterization of a new piperazine compound, 1-(4-methoxyphenyl)-4-((1-phenyl-1H-pyrazol-4-yl)methyl)piperazine (LQFM005), and of its main putative metabolite, 4-(4-((4-(4-methoxyphenyl)piperazin-1-yl)methyl)- 1H-pyrazol-1-yl)phenol (LQFM235). The production of the metabolite was initially performed by in vitro biotransformation of LQFM005 using Aspergillus candidus and then by chemical synthesis. Oral administration of either 12 or 24 µmol/kg LQFM005 to mice did not affect spontaneous locomotor activity but increased the time spent in the center of the open field. Both LQFM005 and LQFM235 (24 µmol/kg) increased the time spent by the mice in the open arms of the elevated plus maze (EPM), a good indication of anxiolytic-like effect, and decreased the immobility time in the forced swimming test (FST), suggesting an antidepressant-like effect. The previous administration of WAY-100635 (a 5-HT1A antagonist) abolished the effects of LQFM005 in both EPM and FST. Binding experiments showed that LQFM005 and its metabolite bind to the 5-HT1A receptor with a moderate affinity (Ki around 5-9 µM). The two compounds are relatively safe, as indicated by cytotoxic assessment using the 3T3 fibroblast cell line and estimated LD50 around 600 mg/kg. In conclusion, oral administration of the newly synthesized phenylpiperazines produced anxiolytic- and antidepressant-like effects in behavioral tests, putatively in part through the activation of 5-HT1A receptors.
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Affiliation(s)
- Lorrane Kelle da Silva Moreira
- Laboratório de Farmacologia de Produtos Naturais e Sintéticos, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil.
| | - Rafaela Ribeiro Silva
- Laboratório de Farmacologia Bioquímica e Molecular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Dayane Moreira da Silva
- Laboratório de Farmacologia de Produtos Naturais e Sintéticos, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Mirella Andrade Silva Mendes
- Laboratório de Química Farmacêutica Medicinal (LQFM), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Adriane Ferreira de Brito
- Laboratório de Farmacologia de Produtos Naturais e Sintéticos, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Flávio Souza de Carvalho
- Laboratório de Química Farmacêutica Medicinal (LQFM), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Germán Sanz
- Laboratório de Cromatografia e Espectrometria de Massas - LaCEM, Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Marcella Ferreira Rodrigues
- Laboratório de Cromatografia e Espectrometria de Massas - LaCEM, Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Artur Christian Garcia da Silva
- Laboratório de Ensino e Pesquisa em Toxicologia In vitro (ToxIn), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Douglas Vieira Thomaz
- Laboratório de Química Farmacêutica Medicinal (LQFM), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Valéria de Oliveira
- Laboratório de Química Farmacêutica Medicinal (LQFM), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Boniek Gontijo Vaz
- Laboratório de Cromatografia e Espectrometria de Massas - LaCEM, Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Luciano Morais Lião
- Laboratório de Ressonância Magnética Nuclear, Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - Marize Campos Valadares
- Laboratório de Ensino e Pesquisa em Toxicologia In vitro (ToxIn), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Eric de Souza Gil
- Laboratório de Química Farmacêutica Medicinal (LQFM), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Elson Alves Costa
- Laboratório de Farmacologia de Produtos Naturais e Sintéticos, Instituto de Ciências Biológicas, Universidade Federal de Goiás, Campus Samambaia, Goiânia, GO, Brazil
| | - François Noël
- Laboratório de Farmacologia Bioquímica e Molecular, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ricardo Menegatti
- Laboratório de Química Farmacêutica Medicinal (LQFM), Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
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Thomaz DV, Contardi UA, Morikawa M, Santos PAD. Development of an affordable, portable and reliable voltametric platform for general purpose electroanalysis. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106756] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Antunes RS, Thomaz DV, Garcia LF, Gil EDS, Lopes FM. Development and Optimization of Solanum Lycocarpum Polyphenol Oxidase-Based Biosensor and Application towards Paracetamol Detection. Adv Pharm Bull 2021; 11:469-476. [PMID: 34513621 PMCID: PMC8421623 DOI: 10.34172/apb.2021.054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 06/30/2020] [Accepted: 07/07/2020] [Indexed: 01/08/2023] Open
Abstract
Purpose: The development biosensing technologies capable of delivering fast and reliable analysis is a growing trend in drug quality control. Considering the emerging use of plant-based polyphenol oxidases (PPO) as biological component of electrochemical biosensors, this work reports the first Solanum lycocarpum PPO biosensor and its use in the pharmaceutical analysis of paracetamol in tablet formulations. Methods: The biosensor was optimized regarding fruit maturation (immature and mature-ripe), vegetal extract volume to be used in biosensor construction as well as optimal pH of electrochemical cell fluid. Results: Results evidenced that the extract which rendered the biosensor with best analytical performance was from immature fruits, and the biosensor produced using 100 µL of crude plant extract promoted better faradaic signal gathering. Moreover, when neutral pH media was used in the electrochemical cell, the biosensor showcased best faradaic signal output from the used redox probe (catechol), suggesting thence that the method presents high sensibility for phenolic compounds detection. Furthermore, the biosensor was able to quantify paracetamol in a linear range from 50 to 300 μM, showcasing LoD and LoQ of 3 μM and 10 μM, respectively. Conclusion: after careful evaluation, this biosensor might be a low-cost alternative for conventional pharmaceutical quality control methods.
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Affiliation(s)
- Rafael Souza Antunes
- Faculty of Pharmacy, Federal University of Goias, R. 240, S/n - Setor Leste Universitário, Goiânia - GO, Brazil. Zip Code: 74605-170
| | - Douglas Vieira Thomaz
- Faculty of Pharmacy, Federal University of Goias, R. 240, S/n - Setor Leste Universitário, Goiânia - GO, Brazil. Zip Code: 74605-170
| | - Luane Ferreira Garcia
- Faculty of Pharmacy, Federal University of Goias, R. 240, S/n - Setor Leste Universitário, Goiânia - GO, Brazil. Zip Code: 74605-170
| | - Eric de Souza Gil
- Faculty of Pharmacy, Federal University of Goias, R. 240, S/n - Setor Leste Universitário, Goiânia - GO, Brazil. Zip Code: 74605-170
| | - Flavio Marques Lopes
- Faculty of Pharmacy, Federal University of Goias, R. 240, S/n - Setor Leste Universitário, Goiânia - GO, Brazil. Zip Code: 74605-170
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Thomaz DV, de Oliveira MG, Rodrigues ESB, da Silva VB, dos Santos PA. Physicochemical Investigation of Psoralen Binding to Double Stranded DNA through Electroanalytical and Cheminformatic Approaches. Pharmaceuticals (Basel) 2020; 13:ph13060108. [PMID: 32481669 PMCID: PMC7344847 DOI: 10.3390/ph13060108] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/13/2020] [Accepted: 05/24/2020] [Indexed: 02/05/2023] Open
Abstract
This work showcased the first physicochemical investigation of psoralen (PSO) binding to double stranded DNA (dsDNA) through electroanalytical methods. Results evidenced that PSO presents one non-reversible anodic peak at electric potential (Epa) ≈ 1.42 V, which is associated with its oxidation and the formation of an epoxide derivative. Moreover, PSO analytical signal (i.e., faradaic current) decreases linearly with the addition of dsDNA, while the electric potential associated to PSO oxidation shifts towards more positive values, indicating thence that dsDNA addition hinders PSO oxidation. These findings were corroborated by the chemoinformatic study, which evidenced that PSO intercalated noncovalently at first between base-pairs of the DNA duplex, and then irreversibly formed adducts with both DNA strands, leading up to the formation of a cross-link which bridges the DNA helix, which explains the linear dependence between the faradaic current generated by PSO oxidation and the concentration of DNA in the test-solution, as well as the dependence between Ep and the addition of dsDNA solution. Therefore, the findings herein reported evidence of the applicability of electroanalytical approaches, such as voltammetry in the study of DNA intercalating agents.
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Affiliation(s)
- Douglas Vieira Thomaz
- Faculty of Pharmacy, Federal University of Goias, Goiania-GO 74605-170, Brazil; (M.G.d.O.); (E.S.B.R.)
- Correspondence: (D.V.T.); (P.A.d.S.)
| | | | | | | | - Pierre Alexandre dos Santos
- Faculty of Pharmacy, Federal University of Goias, Goiania-GO 74605-170, Brazil; (M.G.d.O.); (E.S.B.R.)
- Correspondence: (D.V.T.); (P.A.d.S.)
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Alves CB, Rodrigues ESB, Thomaz DV, Aguiar Filho AMD, Gil EDS, Couto ROD. Correlation of polyphenol content and antioxidant capacity of selected teas and tisanes from Brazilian market. Braz J Food Technol 2020. [DOI: 10.1590/1981-6723.03620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Abstract In this work, it was evaluated the phenolic content, redox behavior and antioxidant capacity of several selected teas and tisanes from Brazilian market. The samples were classified as simple (single herb) or composed (blend of two or more herbs). In addition, complementary multivariate statistical approaches were used to identify the correlation and interdependence between the amount of major phytocomponents, such as phenols and flavonoids, as well as the antioxidant activity of the products. Results showed that the total polyphenol and total flavonoid concentrations are correlated to thermodynamic feasibility of reactive oxygen species reduction. The statistical modeling differentiated the results datasets in principal components, whose flavonoid content presented itself as the main parameter to segregate data between simple and composed products. On the other hand, the whole polyphenol content, in both teas and tisanes, was more relevant regarding their antioxidant capacity than the flavonoids content. Considering that the manufactures do not display the real amount of each herb in the labels of the composed products, it was not possible to confirm whether the blends of several species lead to a substantial enhancement on their antioxidant capacity. Furthermore, the redox profile and overall polyphenol content suggest that the consumption of green and black teas as well as traditional yerba mate may be worthwhile in preventing ailments associated with oxidative stress in Brazilian population. Notwithstanding, further clinical studies are required to validate this hypothesis.
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Macêdo IYLD, Alecrim MF, Oliveira Neto JR, Torres IMS, Thomaz DV, Gil EDS. Piroxicam voltammetric determination by ultra low cost pencil graphite electrode. BRAZ J PHARM SCI 2020. [DOI: 10.1590/s2175-97902019000317344] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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Chaibub BA, Parente LML, Lino Jr RDS, Cirilo HNC, Garcia SADS, Nogueira JCM, Conceição ECD, Thomaz DV, Santos SDC, Bara MTF. Investigation of wound healing activity of Lafoensia pacari (Lythraceae) leaves extract cultivated in Goiás state, Brazil. Rodriguésia 2020. [DOI: 10.1590/2175-7860202071058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract Lafoensia pacari has been used in traditional folk medicine in Brazilian Cerrado to treat wounds. It is important to develop studies that can clarify how the biological activity of L. pacari occurs. The aim of this study was to evaluate the healing activity of L. pacari leaves extract in an animal model. The extract was prepared from plants cultivated in Goiania-GO, Brazil. The healing activity was assayed using cutaneous wound model in rats, and macroscopic, morphometric and histological analysis of wounds were also conducted. The presence of hydrolysable tannins was detected in thin layer chromatography and in high performance liquid chromatography analysis, may be suggested the presence of ellagitannins. In the evaluation of cutaneous wounds in rats it was possible to observe that the treatment with 10% (w/v) L. pacari extract provided a reduction in the time of cutaneous wound healing, with a significant increase in variables involved in healing, such as the number of blood vessels and collagen production. Therefore, this study shows that L. pacari wound healing potential may be related to the presence of ellagitannins and corroborates to ethnopharmacological reports regarding this plant.
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Antunes RS, Thomaz DV, Garcia LF, Gil EDS, Sommerset VS, Lopes FM. Determination of Methyldopa and Paracetamol in Pharmaceutical Samples by a Low Cost Genipa americana L. Polyphenol Oxidase Based Biosensor. Adv Pharm Bull 2019; 9:416-422. [PMID: 31592074 PMCID: PMC6773932 DOI: 10.15171/apb.2019.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 05/31/2019] [Accepted: 06/03/2019] [Indexed: 12/20/2022] Open
Abstract
Purpose: Jenipapo fruit (Genipa americana L) is a natural source of polyphenol oxidases (PPOs) whose potential in pharmaceutical analysis is noteworthy. Henceforth, this work reports the electrochemical study of a low-cost PPO-based biosensor produced from the crude extract of Jenipapo fruits and accounts a practical approach to employ this biosensor in the determination of methyldopa and paracetamol in pharmaceutical samples.
Methods: In order to investigate the electrochemical properties of the biosensor, theoretical
and practical approaches were employed, and both samples and the biosensor were analyzed
through electrochemical impedance spectroscopy (EIS) and voltammetric techniques, namely:
differential pulse voltammetry (DPV) and cyclic voltammetry (CV).
Results: showcased that the biosensor presented good analytical features, as well as low
detection limits (8 μmol L-1 for methyldopa and 5 μmol L-1 for paracetamol). The relative
standard deviation was less than 5% mid-assay.
Conclusion: The use of this biosensor is a reliable, low cost and useful alternative in the
pharmaceutic determination of phenolic drugs (e.g. methyldopa and paracetamol).
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Affiliation(s)
- Rafael Souza Antunes
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO, Brasil
| | - Douglas Vieira Thomaz
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO, Brasil
| | - Luane Ferreira Garcia
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO, Brasil
| | - Eric de Souza Gil
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO, Brasil
| | - Vernon Sydwill Sommerset
- Department of Chemistry, Faculty of Applied Sciences, Cape Peninsula University of Technology, Bellville 7535, South Africa
| | - Flavio Marques Lopes
- Faculdade de Farmácia, Universidade Federal do Goiás (UFG), rua 221 esquina com a 5ª avenida s/n, Setor Universitário, Goiânia-GO, Brasil
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Coelho GD, Ballaminut N, Thomaz DV, Gomes Machado KM. Characterization of a thermostable Deconica castanella Laccase and application toward pentachlorophenol degradation. Prep Biochem Biotechnol 2019; 49:908-915. [DOI: 10.1080/10826068.2019.1636280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Glauciane Danusa Coelho
- Department of Mycology, Institute of Botany of São Paulo (Secretariat of the Environment of the State of São Paulo/SMA/SP), São Paulo, Brazil
| | - Nara Ballaminut
- Department of Mycology, Institute of Botany of São Paulo (Secretariat of the Environment of the State of São Paulo/SMA/SP), São Paulo, Brazil
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da Cunha CEP, Rodrigues ESB, Fernandes Alecrim M, Thomaz DV, Macêdo IYL, Garcia LF, de Oliveira Neto JR, Moreno EKG, Ballaminut N, de Souza Gil E. Voltammetric Evaluation of Diclofenac Tablets Samples through Carbon Black-Based Electrodes. Pharmaceuticals (Basel) 2019; 12:ph12020083. [PMID: 31167398 PMCID: PMC6630689 DOI: 10.3390/ph12020083] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [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: 04/05/2019] [Revised: 05/02/2019] [Accepted: 05/08/2019] [Indexed: 12/21/2022] Open
Abstract
Diclofenac (DIC) is a non-steroidal anti-inflammatory drug of wide use around the world. Electroanalytical methods display a high analytical potential for application in pharmaceutical samples but the drawbacks concerning electrode fouling and reproducibility are of major concern. Henceforth, the aim of this work was to propose the use of alternative low-cost carbon black (CB) and ionic liquid (IL) matrix to modify the surface of pencil graphite electrodes (PGE) in order to quantify DIC in raw materials, intermediates, and final products, as well as in stability assays of tablets. The proposed method using CB+IL/PGE displayed good recovery (99.4%) as well as limits of detection (LOD) of 0.08 µmol L-1 and limits of quantification (LOQ) of 0.28 µmol L-1. CB+IL/PGE response was five times greater than the unmodified PGE. CB+IL-PGE stands as an interesting alternative for DIC assessment in different pharmaceutical samples.
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Affiliation(s)
| | | | | | - Douglas Vieira Thomaz
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
| | | | - Luane Ferreira Garcia
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
| | | | | | - Nara Ballaminut
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
| | - Eric de Souza Gil
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
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Garcia LF, Lacerda MFAR, Thomaz DV, de Souza Golveia JC, Pereira MDGC, de Souza Gil E, Schimidt F, Santiago MF. Optimization of laccase–alginate–chitosan-based matrix toward 17 α-ethinylestradiol removal. Prep Biochem Biotechnol 2019; 49:375-383. [DOI: 10.1080/10826068.2019.1573195] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | | | | | | | - Eric de Souza Gil
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO, Brazil
| | - Fernando Schimidt
- Departamento de Quimica, Instituto Federal de Goias - IFG, Ciência e Tecnologia de Goiás, Instituto Federal de Educação, Goiânia, GO, Brazil
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Lima Morais R, Ferreira Garcia L, Kussmaul Gonçalves Moreno E, Vieira Thomaz D, De Brito Rodrigues L, Barroso Brito L, Sanz Lobón G, Augusto Rodrigues de Oliveira G, Ferreira Rodrigues M, Gontijo Vaz B, Gil EDS. Electrochemical remediation of industrial pharmaceutical wastewater containing hormones in a pilot scale treatment system. ACTA ACUST UNITED AC 2019. [DOI: 10.26850/1678-4618eqj.v44.1.2019.p40-52] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The elimination of residual drugs from pharmaceutical and domestic sources is a growing concern, as they are able to reach water and soil resources and can present environmental and health risks even in very low concentrations. Traditional water and wastewater treatment systems have not been efficient in the removal of these compounds, evidencing the importance of the development of new remediation methods. In view of the applicability and versatility of electrocoagulation techniques in the removal of pollutants, the aim of this work is to evaluate the parameters: biochemical oxygen demand (BOD), chemical oxygen demand (COD), color, turbidity, algestone acetophenide (AAc) and estradiol enanthate (EEn) using a pilot treatment system, as well as phytotoxicity and Brine shrimp toxicity. The study showed good removal efficiency, comprising remarkable remediation performance assayed through BOD (61.5%), COD (58.6%), color (83.1%), turbidity (96.7%), AAc (77.0%) and EEn (56.7%) after 30 minutes. For toxicity, raw effluent was considered more phytotoxic for lettuce and cucumber seeds when compared to treated effluent. The results suggest that the pilot prototype was promising, providing an increase in both the germination potential and the root growth of the seeds (Lactuca sativa and Cucumis sativus) and a significant decrease in the acute toxicity to Artemia salina.
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Lacerda MFAR, Lopes FM, Sartoratto A, Ponezi AN, Thomaz DV, Schimidt F, Santiago MF. Stability of immobilized laccase on Luffa Cylindrica fibers and assessment of synthetic hormone degradation. Prep Biochem Biotechnol 2018; 49:58-63. [DOI: 10.1080/10826068.2018.1525568] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Affiliation(s)
| | | | - Adilson Sartoratto
- Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | - Alexandre Nunes Ponezi
- Centro Pluridisciplinar de Pesquisas Químicas, Biológicas e Agrícolas, Universidade Estadual de Campinas, Campinas, SP, Brazil
| | | | - Fernando Schimidt
- Instituto Federal de Educação, Ciência e Tecnologia de Goiás, Goiânia, GO, Brazil
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Garcia LF, da Cunha CEP, Moreno EKG, Vieira Thomaz D, Lobón GS, Luque R, Somerset V, de Souza Gil E. Nanostructured TiO₂ Carbon Paste Based Sensor for Determination of Methyldopa. Pharmaceuticals (Basel) 2018; 11:ph11040099. [PMID: 30301183 PMCID: PMC6316670 DOI: 10.3390/ph11040099] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 10/01/2018] [Accepted: 10/03/2018] [Indexed: 02/08/2023] Open
Abstract
Methyldopa is a catecholamine widely used in the treatment of mild to moderate hypertension whose determination in pharmaceutical formulae is of upmost importance for dose precision. Henceforth, a low-cost carbon paste electrode (CPE) consisting of graphite powder obtained from a crushed pencil stick was herein modified with nanostructured TiO₂ (TiO₂@CPE) aiming for the detection of methyldopa in pharmaceutical samples. The TiO₂-modified graphite powder was characterized by scanning electron microscopy and X-ray diffraction, which demonstrated the oxide nanostructured morphology. Results evidenced that sensitivity was nonetheless increased due to electro-catalytic effects promoted by metal modification, and linear response obtained by differential pulse voltammetry for the determination of methyldopa (pH = 5.0) was between 10⁻180 μmol/L (Limit of Detection = 1 μmol/L) with the TiO₂@CPE sensor. Furthermore, the constructed sensor was successfully applied in the detection of methyldopa in pharmaceutical formulations and excipients promoted no interference, that indicates that the sensor herein developed is a cheap, reliable, and useful strategy to detect methyldopa in pharmaceutical samples, and may also be applicable in determinations of similar compounds.
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Affiliation(s)
- Luane Ferreira Garcia
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
| | | | | | - Douglas Vieira Thomaz
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
| | - Germán Sanz Lobón
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
| | - Rafael Luque
- Departamento de Química Orgánica, Universidad de Cordoba, Cordoba E14014, Spain.
- Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya str., 117198, Moscow, Russia.
| | - Vernon Somerset
- Department of Chemistry, Cape Peninsula University of Technology, Bellville 7535, South Africa.
| | - Eric de Souza Gil
- Faculdade de Farmácia, Universidade Federal de Goiás, Goiânia, GO 74690-970, Brazil.
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Campos DMB, Barbosa AP, Oliveira JA, Barbosa CAL, Lobo TFC, Silva LG, Thomaz DV, Peixoto JDC. EVALUATION OF THE THERAPEUTIC EFFICACY OF LEVAMISOLE HYDROCHLORIDE ON THIRD-STAGE LARVAE OF Lagochilascaris minor IN EXPERIMENTALLY INFECTED MICE. Rev Inst Med Trop Sao Paulo 2016; 58:43. [PMID: 27253745 PMCID: PMC4880000 DOI: 10.1590/s1678-9946201658043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Accepted: 12/02/2015] [Indexed: 11/22/2022] Open
Abstract
Lagochilascariosis, a disease caused by Lagochilascaris minor,
affects the neck, sinuses, tonsils, lungs, the sacral region, dental alveoli,
eyeballs and the central nervous system of humans. A cycle of autoinfection may occur
in human host tissues characterized by the presence of eggs, larvae and adult worms.
This peculiarity of the cycle hinders therapy, since there are no drugs that exhibit
ovicidal, larvicidal and vermicidal activity. Given these facts, we studied the
action of levamisole hydrochloride on third-stage larvae in the migration phase (G1)
and on encysted larvae (G3) of L. minor. To this end, 87 inbred mice
of the C57BL/6 strain were divided into test groups comprising 67 animals (G1-37;
G3-30) and a control group (G2-10; G4-10) with 20 animals. Each animal was inoculated
orally with 2,000 infective eggs of the parasite. The animals of the test groups were
treated individually with a single oral dose of levamisole hydrochloride at a
concentration of 0.075 mg. The drug was administered either 30 minutes prior to the
parasite inoculation (G1 animals) or 120 days after the inoculation (G3 animals). The
mice in the control groups were not treated with the drug. After the time required
for the migration and the encysting of L. minor larvae, all the
animals were euthanized and their tissues examined. The data were analyzed using the
Student's unpaired t-test and the Levene test. The groups showed no
statistically significant difference. Levamisole hydrochloride was ineffective on
third-stage larvae of L. minor. These findings explain the massive
expulsion of live adult worms, as well as the use of long treatment schemes, owing to
the persistence of larvae and eggs in human parasitic lesions.
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Affiliation(s)
| | - Alverne Passos Barbosa
- Institute of Tropical Pathology and Public Health, Federal University of Goiás, Brazil, ,
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