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Almeida FS, Sousa GLS, Rocha JC, Ribeiro FF, de Oliveira MR, de Lima Grisi TCS, Araújo DAM, de C Nobre MS, Castro RN, Amaral IPG, Keesen TSL, de Moura RO. In vitro anti-Leishmania activity and molecular docking of spiro-acridine compounds as potential multitarget agents against Leishmania infantum. Bioorg Med Chem Lett 2021; 49:128289. [PMID: 34311084 DOI: 10.1016/j.bmcl.2021.128289] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 07/13/2021] [Accepted: 07/20/2021] [Indexed: 11/28/2022]
Abstract
Leishmaniasis is an infectious disease with several limitations regarding treatment schemes. This work reports the anti-Leishmania activity of spiroacridine compounds against the promastigote (IC50 = 1.1 to 6.0 µg / mL) and amastigote forms of the best compounds (EC50 = 4.9 and 0.9 µg / mL) inLeishmania (L.) infantumand proposes an in-silico study with possible selective therapeutic targets for L. infantum. The substituted dimethyl-amine compound (AMTAC 11) showed the best leishmanicidal activity in vitro, and was found to interact with TryRandLdTopoI. comparisons with standard inhibitors were performed, and its main interactions were elucidated. Based on the biological assessment and the structure-activity relationship study, the spiroacridine compounds appear to be promisinganti-leishmaniachemotherapeutic agents to be explored.
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Affiliation(s)
- Fernanda S Almeida
- Programa de Doutorado em Biotecnologia, Rede Nordeste de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, PB 58051-900, Brazil; Laboratório de Imunologia das Doenças Infeciosas, Universidade Federal da Paraíba, João Pessoa, PB 58051-900, Brazil
| | - Gleyton L S Sousa
- Programa de Doutorado em Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23897-000, Brazil
| | - Juliana C Rocha
- Laboratório de Imunologia das Doenças Infeciosas, Universidade Federal da Paraíba, João Pessoa, PB 58051-900, Brazil
| | - Frederico F Ribeiro
- Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, João Pessoa, PB 58059-900, Brazil
| | - Márcia Rosa de Oliveira
- Departamento de Biologia Molecular, Centro de Ciências Exatas e da Natureza, Universidade Federal da Paraíba, Joao Pessoa, Paraíba CEP 58059-900, Brazil
| | | | - Demetrius A M Araújo
- Departamento de Biologia Celular e Molecular, Universidade Federal da Paraíba, João Pessoa, PB 58059-900, Brazil
| | - Michelangela S de C Nobre
- Programa de Doutorado em Ciências Farmacêuticas, Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil
| | - Rosane N Castro
- Programa de Doutorado em Química, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ 23897-000, Brazil
| | - Ian P G Amaral
- Departamento de Biologia Celular e Molecular, Universidade Federal da Paraíba, João Pessoa, PB 58059-900, Brazil
| | - Tatjana S L Keesen
- Departamento de Biologia Celular e Molecular, Universidade Federal da Paraíba, João Pessoa, PB 58059-900, Brazil; Laboratório de Imunologia das Doenças Infeciosas, Universidade Federal da Paraíba, João Pessoa, PB 58051-900, Brazil
| | - Ricardo Olímpio de Moura
- Centro de Ciências Biológicas e da Saúde, Universidade Estadual da Paraíba, Campina Grande, PB 58429-500, Brazil.
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Assis KS, Araújo IGA, de Azevedo FDLAA, Maciel PMP, Machado Calzerra NT, da Silva TAF, Assis VL, de Vasconcelos AP, Santos CAG, Meireles BRLA, Cordeiro AMTM, Araújo DAM, Ribeiro TP, Medeiros IA. Potassium Channel Activation Is Involved in the Cardiovascular Effects Induced by Freeze Dried Syzygium jambolanum (Lam.) DC Fruit Juice. Biomed Res Int 2018; 2018:4827461. [PMID: 30402480 PMCID: PMC6196999 DOI: 10.1155/2018/4827461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 07/25/2018] [Accepted: 09/03/2018] [Indexed: 11/17/2022]
Abstract
This work aimed to explore the cardiovascular effects induced by freeze-dried juice from Syzygium jambolanum (Lam.) DC fruits (JSJ). JSJ presented high polyphenol content and steroids. HPLC analysis revealed that 2,5-dihydroxybenzoic and caffeic acid were present in higher amounts in the JSJ extract. In rat, JSJ induces hypotension and vasodilatation in mesenteric arteries, with or without vascular endothelium. JSJ-mediated vasodilation response against contractions induced with KCl (60 mM) depolarizing solution was significantly lower than the responses induced by JSJ when evaluated against phenylephrine-induced contractions. To investigate the involvement of potassium channels we used Tyrode's solution with KCl (20 mM) or tetraethylammonium (1.0, 3.0, or 5.0 mM). In these conditions JSJ-induced effects were significantly attenuated. To investigate the potassium channel subtypes involved in the response, we used 4-aminopyridine, glibenclamide, BaCl2, and iberiotoxin. In the presence (simultaneous) of different potassium channel blockers we observed a significant attenuation of JSJ-induced effect. Inhibition was also observed when using BaCl2, glibenclamide, or 4-aminopyridine, separately. However, incubation with iberiotoxin did not promote changes in either maximum effect, or potency. We also evidenced a discrete participation of CaV channels in the JSJ-induced vasorelaxant effect. In addition, patch-clamp studies demonstrated that JSJ could activate potassium channels. In conclusion, JSJ promotes hypotension and vasorelaxation in rats, involving, at least, the activation of potassium channels.
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Affiliation(s)
- Kívia S. Assis
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Islania G. A. Araújo
- Departamento de Ciências Farmacêuticas, (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Fátima de L. A. A. de Azevedo
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Priscilla M. P. Maciel
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Natália T. Machado Calzerra
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Tays A. F. da Silva
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Valéria L. Assis
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Aliny P. de Vasconcelos
- Departamento de Biotecnologia, Centro de Biotecnologia/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Carlos A. G. Santos
- Centro de Educação e Saúde, Unidade Acadêmica de Biologia e Química, Universidade Federal de Campina Grande (UFCG) Cuité, Paraíba, 58750-000, Brazil
| | - Bruno R. L. A. Meireles
- Departamento de Tecnologia de Alimentos, Centro de Tecnologia e Desenvolvimento Regional - CTDR, Universidade Federal de Paraíba, João Pessoa, Paraíba, Brazil
| | - Angela M. T. M. Cordeiro
- Centro de Educação e Saúde, Unidade Acadêmica de Biologia e Química, Universidade Federal de Campina Grande (UFCG) Cuité, Paraíba, 58750-000, Brazil
| | - Demetrius A. M. Araújo
- Departamento de Biotecnologia, Centro de Biotecnologia/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Thais P. Ribeiro
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
| | - Isac A. Medeiros
- Programa de Pós-Graduação em Produtos Naturais e Sintéticos Bioativos/Centro de Ciências da Saúde (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
- Departamento de Ciências Farmacêuticas, (CCS)/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil
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Coulidiati TH, Dantas BB, Faheina-Martins GV, Gonçalves JCR, do Nascimento WS, de Oliveira RN, Camara CA, Oliveira EJ, Lara A, Gomes ER, Araújo DAM. Distinct effects of novel naphtoquinone-based triazoles in human leukaemic cell lines. J Pharm Pharmacol 2015; 67:1682-95. [DOI: 10.1111/jphp.12474] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Accepted: 07/06/2015] [Indexed: 12/11/2022]
Abstract
Abstract
Objectives
The aim of this study was to investigate the cytotoxic effect of new 1,4-naphthoquinone- 1,2,3-triazoles, named C2 to C8 triazole derivatives, towards human cancer cell lines.
Methods
The effect on cell viability was assessed by MTT and propidium iodide assays. The cytotoxic effect of C2 and C3 in K562 and HL-60 cells were analyzed by flow cytometry, DNA fragmentation and reactive oxygen species (ROS) production. Western blot and q-PCR procedures were also performed.
Key findings
C2 and C3 inhibited both K562 and HL-60 cells growth in a concentration-dependent manner. C2 presented the highest cytotoxic activity with an IC50 of approximately 14 μm and 41 μm for HL-60 and K562 cells, respectively, while being less toxic to normal peripheral blood monocyte cells. Both derivatives induced cellular changes in HL-60 cells, characteristic of apoptosis, such as mitochondrial membrane depolarization, phosphatidylserine externalization, increasing sub-G1 phase, DNA fragmentation, downregulating Bcl-2 protein and upregulating Bax protein. In K562 cells, C2 and C3 induced S-phase arrest of cell cycle, which was associated with upregulation of p21. The effect of these derivatives in HL-60 cells can be related to the ROS intracellular level.
Conclusion
Taken together our results showed that C2 and C3 triazole derivatives presented the best potential for drug design.
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Affiliation(s)
- Tangbadioa H. Coulidiati
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Bruna B. Dantas
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Glaucia V. Faheina-Martins
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Juan C. R. Gonçalves
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Wilson S. do Nascimento
- Laboratório de Síntese de Compostos Bioativos, Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Ronaldo N. de Oliveira
- Laboratório de Síntese de Compostos Bioativos, Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Celso A. Camara
- Laboratório de Síntese de Compostos Bioativos, Departamento de Ciências Moleculares, Universidade Federal Rural de Pernambuco, Recife, Brazil
| | - Eduardo J. Oliveira
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Aline Lara
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Eneas R. Gomes
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
| | - Demetrius A. M. Araújo
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Brazil
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Silveira AL, Faheina-Martins GV, Maia RC, Araújo DAM. Compound A398, a novel podophyllotoxin analogue: cytotoxicity and induction of apoptosis in human leukemia cells. PLoS One 2014; 9:e107404. [PMID: 25221997 PMCID: PMC4164611 DOI: 10.1371/journal.pone.0107404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 08/15/2014] [Indexed: 12/25/2022] Open
Abstract
Despite advances in oncology research, cancer is one of the leading causes of death worldwide. Thus, there is a demand for the development of more selective and effective antitumor agents. This study showed that A398, a novel podophyllotoxin analogue, was cytotoxic to the HT-29, MCF-7, MOLT-4 and HL-60 tumor cell lines, being less active in human peripheral blood mononuclear cells and normal cell lines FGH and IEC-6. Tests using the HepG2 lineage indicated that its metabolites do not contribute to its cytotoxicity. In the HL-60 cells, A398 induced apoptosis in a time and concentration-dependent manner, promoting mitochondrial depolarization, inhibition of Bcl-2, phosphatidylserine exposure, activation of caspases -8, -9 and -3, and DNA fragmentation. The production of reactive oxygen species does not seem to be a crucial event for the apoptotic process. Pretreatment with specific inhibitors of kinases ERK1/2, JNK and p38 resulted in an increased percentage of death induced by A398. These results indicate that the compound induced apoptosis through activation of intrinsic and extrinsic death pathways with the mechanism involving the inhibition of the MAPKs and Bcl-2. Taken together, our findings suggest that A398 has an anticancer potential, proving itself to be a candidate for preclinical studies.
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Affiliation(s)
- Alethéia L. Silveira
- Departamento de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brasil
| | - Glaúcia V. Faheina-Martins
- Departamento de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brasil
- Departamento de Biologia Molecular, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brasil
| | - Raquel C. Maia
- Laboratório de Hemato-Oncologia Celular e Molecular, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Rio de Janeiro, Brasil
| | - Demetrius A. M. Araújo
- Departamento de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brasil
- * E-mail:
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Gonçalves JCR, Silveira AL, de Souza HDN, Nery AA, Prado VF, Prado MAM, Ulrich H, Araújo DAM. The monoterpene (-)-carvone: A novel agonist of TRPV1 channels. Cytometry A 2013; 83:212-9. [DOI: 10.1002/cyto.a.22236] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Revised: 10/08/2012] [Accepted: 10/31/2012] [Indexed: 12/25/2022]
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Faheina-Martins GV, da Silveira AL, Cavalcanti BC, Ramos MV, Moraes MO, Pessoa C, Araújo DAM. Antiproliferative effects of lectins from Canavalia ensiformis and Canavalia brasiliensis in human leukemia cell lines. Toxicol In Vitro 2012; 26:1161-9. [PMID: 22776218 DOI: 10.1016/j.tiv.2012.06.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Revised: 06/16/2012] [Accepted: 06/29/2012] [Indexed: 01/19/2023]
Abstract
The antiproliferative activity of lectins Canavalia ensiformis (ConA) and Canavalia brasiliensis (ConBr) were studied using human leukemia MOLT-4 and HL-60 cell lines. It was revealed that both ConA and ConBr were markedly cytotoxic to cells using MTT and NAC assays. The IC(50) values were approximately 3 and 20 μg/mL for ConA and ConBr, respectively, for both MOLT-4 and HL-60 cells. However, in normal human peripheral blood lymphocytes, the lectins were not cytotoxic, even when tested at concentrations as high as 200 μg/ml. Using comet assay, the lectins produced a rate of DNA damage exceeding 80% in MOLT-4 and HL-60 cells. Fluorescence analysis revealed the morphology characteristic of apoptosis, with low concentrations of apoptotic bodies and fragmented DNA (5 μg/ml). Flow cytometric analysis demonstrated an accumulation of cells in the sub-G1 cell cycle that is characteristic of DNA fragmentation, and a decrease in membrane integrity at high concentrations. Lastly, we evaluated the alterations in mitochondrial potential that reduced after treatment with lectins. Our results indicate that ConA and ConBr inhibited cell proliferation selectively in tumor cells and that apoptosis was the main death mechanism. Therefore, lectins can be considered a class of molecules with a high antitumor activity potential.
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Affiliation(s)
- Glaucia V Faheina-Martins
- Departamento de Biotecnologia, Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
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Silva DF, Araújo IGA, Albuquerque JGF, Porto DL, Dias KLG, Cavalcante KVM, Veras RC, Nunes XP, Barbosa-Filho JM, Araújo DAM, Cruz JS, Correia NA, De Medeiros IA. Rotundifolone-induced relaxation is mediated by BK(Ca) channel activation and Ca(v) channel inactivation. Basic Clin Pharmacol Toxicol 2011; 109:465-75. [PMID: 21726408 DOI: 10.1111/j.1742-7843.2011.00749.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Rotundifolone is the major constituent of the essential oil of Mentha x villosa Hudson. In preliminary studies, rotundifolone induced significant hypotensive, bradycardic and vasorelaxant effects in rats. Thus, to gain more insight into the pharmacology of rotundifolone, the aim of this study was to characterize the molecular mechanism of action involved in relaxation produced by rotundifolone. The relaxant effect was investigated in rat superior mesenteric arteries by using isometric tension measurements and whole-cell patch-clamp techniques. Rotundifolone relaxed phenylephrine-induced contractions in a concentration-dependent manner. Pre-treatment with KCl (20 mM), charybdotoxin (10(-7) M) or tetraethylammonium (TEA 10(-3) or 3 × 10(-3) M) significantly attenuated the relaxation effect induced by rotundifolone. Additionally, whole-cell patch-clamp recordings were made in mesenteric smooth muscle cells and showed that rotundifolone significantly increased K(+) currents, and this effect was abolished by TEA (10(-3) M), suggesting the participation of BK(Ca) channels. Furthermore, rotundifolone inhibited the vasoconstriction induced by CaCl(2) in depolarizing nominally Ca(2+) -free medium and antagonized the contractions elicited by an L-type Ca(2+) channel agonist, S(-)-Bay K 8644 (2 × 10(-7) M), indicating that the vasodilatation involved inhibition of Ca(2+) influx through L-type voltage-dependent calcium channels (Ca(v) type-L). Additionally, rotundifolone inhibited L-type Ca(2+) currents (I(Ca) L), affecting the voltage-dependent activation of I(Ca) L and steady-state inactivation. Our findings suggest that rotundifolone induces vasodilatation through two distinct but complementary mechanisms that clearly depend on the concentration range used. Rotundifolone elicits an increase in the current density of BK(Ca) channels and causes a shift in the steady-state inactivation relationship for Ca(v) type-L towards more hyperpolarized membrane potentials.
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Affiliation(s)
- Darízy F Silva
- Laboratório de Tecnologia Farmacêutica (LTF), Universidade Federal da Paraíba - UFPB, João Pessoa, PB - Brazil.
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Van der Linden MG, Rêgo TG, Araújo DAM, Farias ST. Prediction of potential thermostable proteins in Xylella fastidiosa. J Theor Biol 2006; 242:421-5. [PMID: 16631209 DOI: 10.1016/j.jtbi.2006.03.009] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2005] [Revised: 03/07/2006] [Accepted: 03/17/2006] [Indexed: 11/20/2022]
Abstract
The average protein (E+K)/(Q+H) ratio in organisms has already been demonstrated to have a strong correlation with their optimal growth temperature. Employing the Thermo-Search web tool, we used this ratio as a basis to look for thermostable proteins in a mesophile, Xylella fastidiosa. Nine proteins were chosen to have their three-dimensional structures modeled by homology, using mainly proteins from mesophiles as templates. Resulting models featured a high number of hydrophobic interactions, a property that has been previously associated with thermostability. These results demonstrate the interesting possibility of using the (E+K)/(Q+H) ratio to find individual thermostable proteins in mesophilic organisms.
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Affiliation(s)
- M G Van der Linden
- Universidade Federal da Paraíba, Departamento de Biologia Molecular, João Pessoa, PB, Brazil
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