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Gandra RM, Pacheco CA, Sangenito LS, Ramos LS, Souza LO, McCarron P, McCann M, Devereux M, Branquinha MH, Santos AL. Manganese(II), copper(II) and silver(I) complexes containing 1,10-phenanthroline/1,10-phenanthroline-5,6-dione against Candida species. Future Microbiol 2024. [PMID: 38381028 DOI: 10.2217/fmb-2023-0212] [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] [Indexed: 02/22/2024] Open
Abstract
Background: New chemotherapeutics are urgently required to treat Candida infections caused by drug-resistant strains. Methods: The effects of 16 1,10-phenanthroline (phen)/1,10-phenanthroline-5,6-dione/dicarboxylate complexed with Mn(II), Cu(II) and Ag(I) were evaluated against ten different Candida species. Results: Proliferation of Candida albicans, Candida dubliniensis, Candida famata, Candida glabrata, Candida guilliermondii, Candida kefyr, Candida krusei, Candida lusitaniae, Candida parapsilosis and Candida tropicalis was inhibited by three of six Cu(II) (MICs 1.52-21.55 μM), three of three Ag(I) (MICs 0.11-12.74 μM) and seven of seven Mn(II) (MICs 0.40-38.06 μM) complexes. Among these [Mn2(oda)(phen)4(H2O)2][Mn2(oda)(phen)4(oda)2].4H2O, where oda = octanedioic acid, exhibited effective growth inhibition (MICs 0.4-3.25 μM), favorable activity indexes, low toxicity against Vero cells and good/excellent selectivity indexes (46.88-375). Conclusion: [Mn2(oda)(phen)4(H2O)2][Mn2(oda)(phen)4(oda)2].4H2O represents a promising chemotherapeutic option for emerging, medically relevant and drug-resistant Candida species.
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Affiliation(s)
- Rafael M Gandra
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Bioquímica (PPGBq), Instituto de Química (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Clarissa A Pacheco
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Leandro S Sangenito
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Nilópolis, Rio de Janeiro, Brazil
| | - Lívia S Ramos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Lucieri Op Souza
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
| | - Pauraic McCarron
- Chemistry Department, Maynooth University, National University of Ireland, Maynooth, Ireland
| | - Malachy McCann
- Chemistry Department, Maynooth University, National University of Ireland, Maynooth, Ireland
| | - Michael Devereux
- The Centre for Biomimetic & Therapeutic Research, Focas Research Institute, Technological University Dublin, Dublin, Ireland
| | - Marta H Branquinha
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Rede Micologia RJ - Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil
| | - André Ls Santos
- Laboratório de Estudos Avançados de Microrganismos Emergentes e Resistentes (LEAMER), Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes (IMPG), Centro de Ciências da Saúde (CCS), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Programa de Pós-Graduação em Bioquímica (PPGBq), Instituto de Química (IQ), Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
- Rede Micologia RJ - Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), Rio de Janeiro, Brazil
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Rainha N, Medeiros VP, Ferreira C, Raposo A, Leite JP, Cruz C, Pacheco CA, Ponte D, Silva AB. Leaf malate and succinate accumulation are out of phase throughout the development of the CAM plant Ananas comosus. Plant Physiol Biochem 2016; 100:47-51. [PMID: 26773544 DOI: 10.1016/j.plaphy.2015.12.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 12/29/2015] [Accepted: 12/31/2015] [Indexed: 06/05/2023]
Abstract
In plants with Crassulacean Acid Metabolism (CAM), organic acids, mainly malate are crucial intermediates for carbon fixation. In this research we studied the circadian oscillations of three organic anions (malate, citrate, and succinate) in Ananas comosus, assessing the effect of season and plant development stage. Seasonal and plant development dependencies were observed. The circadian oscillations of malate and citrate were typical of CAM pathways reported in the literature. Citrate content was quite stable (25-30 μmol g(-1) FW) along the day, with a seasonal effect. Succinate was shown to have both diurnal and seasonal oscillations and also a correlation with malate, since it accumulated during the afternoon when malate content was normally at a minimum, suggesting a possible mechanistic effect between both anions in CAM and/or respiratory metabolisms.
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Affiliation(s)
- N Rainha
- Instituto de Inovação Tecnológica dos Açores (INOVA), Estrada de São Gonçalo, 9504-540 Ponta Delgada, São Miguel, Açores, Portugal; Centro de Ecologia Evolução e Alterações Ambientais (cE3c), Universidade de Lisboa, Faculdade de Ciências, Campo Grande, 1749-016 Lisboa, Portugal.
| | - V P Medeiros
- Instituto de Inovação Tecnológica dos Açores (INOVA), Estrada de São Gonçalo, 9504-540 Ponta Delgada, São Miguel, Açores, Portugal
| | - C Ferreira
- Instituto de Inovação Tecnológica dos Açores (INOVA), Estrada de São Gonçalo, 9504-540 Ponta Delgada, São Miguel, Açores, Portugal
| | - A Raposo
- Instituto de Inovação Tecnológica dos Açores (INOVA), Estrada de São Gonçalo, 9504-540 Ponta Delgada, São Miguel, Açores, Portugal
| | - J P Leite
- Instituto de Inovação Tecnológica dos Açores (INOVA), Estrada de São Gonçalo, 9504-540 Ponta Delgada, São Miguel, Açores, Portugal
| | - C Cruz
- Centro de Ecologia Evolução e Alterações Ambientais (cE3c), Universidade de Lisboa, Faculdade de Ciências, Campo Grande, 1749-016 Lisboa, Portugal; Universidade de Lisboa, Faculdade de Ciências, Departamento de Biologia Vegetal, Campo Grande, 1749-016 Lisboa, Portugal
| | - C A Pacheco
- Instituto Superior de Agronomia, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - D Ponte
- Instituto de Inovação Tecnológica dos Açores (INOVA), Estrada de São Gonçalo, 9504-540 Ponta Delgada, São Miguel, Açores, Portugal
| | - A B Silva
- Universidade de Lisboa, Faculdade de Ciências, Departamento de Biologia Vegetal, Campo Grande, 1749-016 Lisboa, Portugal; Biosystems & Integrative Sciences Institute (BioISI), Universidade de Lisboa, Faculdade de Ciências, Campo Grande, 1749-016 Lisboa, Portugal
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Pacheco CA, Alevi KCC, Silva TL, Azeredo-Oliveira MTV, Ceron CR, Kobayashi MKH. Nucleolar activity during larval development of Myrmeleon uniformis Navas, 1920 (Neuroptera, Myrmeleontidae). Genet Mol Res 2014; 13:5154-8. [PMID: 25061740 DOI: 10.4238/2014.july.7.8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
It has been reported in the literature that the Malpighian tubules of Neuroptera in the third instar undergo drastic histological changes, when they stop functioning in osmoregulation and start to secrete silk fibers for a cocoon. Therefore, to increase our knowledge about these cellular alterations that occur in the larvae of Neuroptera, we analyzed the cells that constitute the Malpighian tubules of each larval instar of the species Myrmeleon uniformis, with emphasis on nucleolar activity. Malpighian tubules, after being removed, were fixed on a slide using liquid nitrogen and stained by silver impregnation. In addition, total protein of the tubules was quantified. By analyzing the cells in the first instar larval stage, we observed only two silver-stained nucleolar regions. In cells of second instar larvae, there was an increase in the number of stained regions, and in the third instar, the number of nucleolar regions was very large. Agarose gel electrophoresis indicated that third instar larvae had high synthetic activity, where the total amount of proteins was larger in third instar stage than in the other larval stages. Furthermore, the most abundant proteins displayed molecular weights of about 32-43 kDa and were probably precursors of silk fibers. Thus, the results obtained showed that nucleolar alterations occur in the cells of the Malpighian tubules of larval instars of M. uniformis and this is directly related to the production of silk fibers used by the pupa to ensure the completion of metamorphosis.
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Affiliation(s)
- C A Pacheco
- Centro Universitário do Norte Paulista, São José do Rio Preto, SP, Brasil
| | - K C C Alevi
- Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, SP, Brasil
| | - T L Silva
- Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, SP, Brasil
| | - M T V Azeredo-Oliveira
- Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, SP, Brasil
| | - C R Ceron
- Laboratório de Genética Bioquímica, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, SP, Brasil
| | - M K H Kobayashi
- Laboratório de Biologia Celular, Departamento de Biologia, Instituto de Biociências, Letras e Ciências Exatas, Universidade Estadual Paulista "Júlio de Mesquita Filho", São José do Rio Preto, SP, Brasil
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Santos AF, Valle RS, Pacheco CA, Alvarez VM, Seldin L, Santos ALS. Extracellular proteases of Halobacillus blutaparonensis strain M9, a new moderately halophilic bacterium. Braz J Microbiol 2014; 44:1299-304. [PMID: 24688526 PMCID: PMC3958202 DOI: 10.1590/s1517-83822014005000015] [Citation(s) in RCA: 15] [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: 05/14/2012] [Accepted: 04/04/2013] [Indexed: 12/05/2022] Open
Abstract
Halophilic microorganisms are source of potential hydrolytic enzymes to be used in industrial and/or biotechnological processes. In the present study, we have investigated the ability of the moderately halophilic bacterium Halobacillus blutaparonensis (strain M9), a novel species described by our group, to release proteolytic enzymes. This bacterial strain abundantly proliferated in Luria-Bertani broth supplemented with 2.5% NaCl as well as secreted proteases to the extracellular environment. The production of proteases occurred in bacterial cells grown under different concentration of salt, ranging from 0.5% to 10% NaCl, in a similar way. The proteases secreted by H. blutaparonensis presented the following properties: (i) molecular masses ranging from 30 to 80 kDa, (ii) better hydrolytic activities under neutral-alkaline pH range, (iii) expression modulated according to the culture age, (iv) susceptibility to phenylmethylsulphonyl fluoride, classifying them as serine-type proteases, (v) specific cleavage over the chymotrypsin substrate, and (vi) enzymatic stability in the presence of salt (up to 20% NaCl) and organic solvents (e.g., ether, isooctane and cyclohexane). The proteases described herein are promising for industrial practices due to its haloalkaline properties.
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Affiliation(s)
- Anderson F Santos
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. ; Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Roberta S Valle
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Clarissa A Pacheco
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. ; Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Vanessa M Alvarez
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Lucy Seldin
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - André L S Santos
- Departamento de Microbiologia Geral, Instituto de Microbiologia Paulo de Góes, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil. ; Programa de Pós-Graduação em Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Hershberger PK, Elder NE, Grady CA, Gregg JL, Pacheco CA, Greene C, Rice C, Meyers TR. Prevalence of viral erythrocytic necrosis in Pacific herring and epizootics in Skagit Bay, Puget Sound, Washington. J Aquat Anim Health 2009; 21:1-7. [PMID: 19485119 DOI: 10.1577/h08-035.1] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Epizootics of viral erythrocytic necrosis (VEN) occurred among juvenile Pacific herring Clupea pallasii in Skagit Bay, Puget Sound, Washington, during 2005-2007 and were characterized by high prevalences and intensities of cytoplasmic inclusion bodies within circulating erythrocytes. The prevalence of VEN peaked at 67% during the first epizootic in October 2005 and waned to 0% by August 2006. A second VEN epizootic occurred throughout the summer of 2007; this was characterized by disease initiation and perpetuation in the age-1, 2006 year-class, followed by involvement of the age-0, 2007 year-class shortly after the latter's metamorphosis to the juvenile stage. The disease was detected in other populations of juvenile Pacific herring throughout Puget Sound and Prince William Sound, Alaska, where the prevalences and intensities typically did not correspond to those observed in Skagit Bay. The persistence and recurrence of VEN epizootics indicate that the disease is probably common among juvenile Pacific herring throughout the eastern North Pacific Ocean, and although population-level impacts probably occur they are typically covert and not easily detected.
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Affiliation(s)
- P K Hershberger
- US Geological Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, Nordland, Washington 98358, USA.
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Abstract
Chlorine and iodine solutions were effective at inactivating Ichthyophonus spores in vitro. Inactivation in sea water increased directly with halogen concentration and exposure duration, with significant differences (P < 0.05) from controls occurring at all chlorine concentrations and exposure durations tested (1.5-13.3 ppm for 1-60 min) and at most iodine concentrations and exposure durations tested (1.2 ppm for 60 min and 5.9-10.7 ppm for 1-60 min). However, 10-fold reductions in spore viability occurred only after exposure to halogen solutions at higher concentrations and/or longer durations (13 ppm total chlorine for 1-60 min, 5.9 ppm total iodine for 60 min, and 10.7 ppm total iodine for 1-60 min). Inactivation efficacy was greater when halogen solutions were prepared in fresh water, presumably because of combined effects of halogen-induced inactivation and general spore instability in fresh water. The results have practical implications for disinfection and biocontainment in research laboratories and other facilities that handle live Ichthyophonus cultures and/or infected fish.
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Affiliation(s)
- P K Hershberger
- Marrowstone Marine Field Station, Western Fisheries Research Center, United States Geological Survey, Nordland, WA 98358, USA.
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Hall RC, Dunlap PK, Hall RC, Pacheco CA, Blakey RK, Abraham J. Thyroid disease and abnormal thyroid function tests in women with eating disorders and depression. J Fla Med Assoc 1995; 82:187-192. [PMID: 7738522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Forty-two female patients with an eating disorder and major depression were compared with 48 female patients with major depression in a retrospective chart study for the prevalence of thyroid disease and laboratory thyroid function abnormalities in the absence of thyroid disease. Eating disorder patients, aged 30-80 years, had a significantly higher incidence in thyroid diseases (53%) then those with major depression alone (17%). The incidence of thyroid disease did not differ between the two groups among patients aged 11-29 years. Abnormal thyroid screening values occurred in 40% of euthyroid eating disorder patients and 34% of those with major depression. While the overall prevalence of thyroid disease in depressed females (15%) was similar to that in the general population (10.5%), thyroid disease in the eating disordered/depressed patients was twice the rate expected (24%) in the general population. Female patients who require psychiatric hospitalization should be routinely evaluated for thyroid function, especially those diagnosed with an eating disorder and depression.
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Affiliation(s)
- R C Hall
- University of Florida, Gainesville, USA
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