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Durigon DC, Glitz VA, Pimenta BF, Guedes AMV, Silva JVO, Bella Cruz CC, Andrade LM, Pereira-Maia EC, Mikcha JMG, Bella Cruz A, Xavier FR, Terenzi HF, Poneti G, Ribeiro RR, Nordlander E, Caramori GF, Bortoluzzi AJ, Peralta RA. The influence of thioether-substituted ligands in dicopper(II) complexes: Enhancing oxidation and biological activities. J Inorg Biochem 2024; 256:112573. [PMID: 38678913 DOI: 10.1016/j.jinorgbio.2024.112573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2024] [Revised: 04/15/2024] [Accepted: 04/22/2024] [Indexed: 05/01/2024]
Abstract
This paper describes the synthesis, structural analysis, as well as the magnetic and spectroscopic characterizations of three new dicopper(II) complexes with dinucleating phenol-based ligands containing different thioether donor substituents: aromatic (1), aliphatic (2) or thiophene (3). Temperature-dependent magnetometry reveals the presence of antiferromagnetic coupling for 1 and 3 (J = -2.27 cm-1 and -5.01 cm-1, respectively, H = -2JS1S2) and ferromagnetic coupling for 2 (J = 5.72 cm-1). Broken symmetry DFT calculations attribute this behavior to a major contribution from the dz2 orbitals for 1 and 3, and from the dx2-y2 orbitals for 2, along with the p orbitals of the oxygens. The bioinspired catalytic activities of these complexes related to catechol oxidase were studied using 3,5-di-tert-butylcatechol as substrate. The order of catalytic rates for the substrate oxidation follows the trend 1 > 2 > 3 with kcat of (90.79 ± 2.90) × 10-3 for 1, (64.21 ± 0.99) × 10-3 for 2 and (14.20 ± 0.32) × 10-3 s-1 for 3. The complexes also cleave DNA through an oxidative mechanism with minor-groove preference, as indicated by experimental and molecular docking assays. Antimicrobial potential of these highly active complexes has shown that 3 inhibits both Staphylococcus aureus bacterium and Epidermophyton floccosum fungus. Notably, the complexes were found to be nontoxic to normal cells but exhibited cytotoxicity against epidermoid carcinoma cells, surpassing the activity of the metallodrug cisplatin. This research shows the multifaceted properties of these complexes, making them promising candidates for various applications in catalysis, nucleic acids research, and antimicrobial activities.
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Affiliation(s)
- Daniele C Durigon
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Vinícius A Glitz
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Beatriz F Pimenta
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Anderson M V Guedes
- Departamento de Química, Universidade Federal do Rio de Janeiro, UFRJ, CEP 21941-901 Rio de Janeiro, RJ, Brazil
| | - João V O Silva
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, UEM, CEP 87020-900 Maringá, PR, Brazil
| | - Catarina C Bella Cruz
- Centro de Ensino em Ciências da Saúde, Universidade do Vale do Itajaí, Univali, CEP 88302-901 Itajaí, SC, Brazil
| | - Lídia M Andrade
- Departamento de Genética, Ecologia e Evolução and Departamento de Física, Universidade Federal de Minas Gerais, UFMG, CEP 31270-901 Belo Horizonte, MG, Brazil
| | - Elene C Pereira-Maia
- Departamento de Química, Universidade Federal de Minas Gerais, UFMG, CEP 31270-901, Belo Horizonte, MG, Brazil
| | - Jane M G Mikcha
- Departamento de Análises Clínicas e Biomedicina, Universidade Estadual de Maringá, UEM, CEP 87020-900 Maringá, PR, Brazil
| | - Alexandre Bella Cruz
- Centro de Ensino em Ciências da Saúde, Universidade do Vale do Itajaí, Univali, CEP 88302-901 Itajaí, SC, Brazil
| | - Fernando R Xavier
- Departamento de Química, Universidade do Estado de Santa Catarina, UDESC, CEP 89219-710 Joinville, SC, Brazil
| | - Hernán F Terenzi
- Laboratório de Biologia Molecular Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Giordano Poneti
- Departamento de Química, Universidade Federal do Rio de Janeiro, UFRJ, CEP 21941-901 Rio de Janeiro, RJ, Brazil; Dipartimento di Scienze Ecologiche e Biologiche, Università degli Studi della Tuscia, Largo dell'Università, 01100 Viterbo, Italy
| | - Ronny R Ribeiro
- Departamento de Química, Universidade Federal do Paraná, UFPR, CEP 81531-980 Curitiba, PR, Brazil
| | - Ebbe Nordlander
- Chemical Physics, Department of Chemistry, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Giovanni F Caramori
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Adailton J Bortoluzzi
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil
| | - Rosely A Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, UFSC, CEP 88040-900 Florianópolis, SC, Brazil.
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Ferraz FS, Dantas GDPF, Coimbra JLP, López JL, Lacerda SMSN, Dos Santos ML, Vieira CP, Lara NDLEM, Viana PIM, Ladeira LO, Guarnieri LO, Marçal EMA, Moraes MFD, Martins EMN, Andrade LM, Costa GMJ. Effects of superparamagnetic iron oxide nanoparticles (SPIONS) testicular injection on Leydig cell function and sperm production in a murine model. Reprod Toxicol 2024; 126:108584. [PMID: 38561096 DOI: 10.1016/j.reprotox.2024.108584] [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: 12/22/2023] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/04/2024]
Abstract
In the domain of medical advancement, nanotechnology plays a pivotal role, especially in the synthesis of biocompatible materials for therapeutic use. Superparamagnetic Iron Oxide Nanoparticles (SPIONs), known for their magnetic properties and low toxicity, stand at the forefront of this innovation. This study explored the reproductive toxicological effects of Sodium Citrate-functionalized SPIONs (Cit_SPIONs) in adult male mice, an area of research that holds significant potential yet remains largely unknown. Our findings reveal that Cit_SPIONs induce notable morphological changes in interstitial cells and the seminiferous epithelium when introduced via intratesticular injection. This observation is critical in understanding the interactions of nanomaterials within reproductive biological systems. A striking feature of this study is the rapid localization of Cit_SPIONs in Leydig cells post-injection, a factor that appears to be closely linked with the observed decrease in steroidogenic activity and testosterone levels. This data suggests a possible application in developing nanostructured therapies targeting androgen-related processes. Over 56 days, these nanoparticles exhibited remarkable biological distribution in testis parenchyma, infiltrating various cells within the tubular and intertubular compartments. While the duration of spermatogenesis remained unchanged, there were many Tunel-positive germ cells, a notable reduction in daily sperm production, and reduced progressive sperm motility in the treated group. These insights not only shed light on the intricate mechanisms of Cit_SPIONs interaction with the male reproductive system but also highlight the potential of nanotechnology in developing advanced biomedical applications.
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Affiliation(s)
- Fausto S Ferraz
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Graziela de P F Dantas
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - John L P Coimbra
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jorge L López
- Center for Biological and Natural Sciences, Federal University of Acre, Rio Branco, AC, Brazil
| | - Samyra M S N Lacerda
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Mara L Dos Santos
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carolina P Vieira
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Nathália de L E M Lara
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Pedro I M Viana
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luiz O Ladeira
- Department of Physics, ICEX, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Leonardo O Guarnieri
- Magnetic Resonance Center (CTPMag) of the Department of Electrical Engineering at the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Eduardo M A Marçal
- Magnetic Resonance Center (CTPMag) of the Department of Electrical Engineering at the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Márcio F D Moraes
- Magnetic Resonance Center (CTPMag) of the Department of Electrical Engineering at the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Estefânia M N Martins
- Nuclear Technology Development Center (CDTN), National Nuclear Energy Commission (CNEN), Belo Horizonte, MG, Brazil
| | - Lídia M Andrade
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil; Department of Physics, ICEX, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Guilherme M J Costa
- Department of Morphology, ICB, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
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Andrade LM, Costa GMJ. Insights into Gold Nanoparticles Possibilities for Diagnosis and Treatment of the Head and Neck Upper Aerodigestive Tract Cancers. Cancers (Basel) 2023; 15:cancers15072080. [PMID: 37046740 PMCID: PMC10093449 DOI: 10.3390/cancers15072080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/31/2023] [Accepted: 02/03/2023] [Indexed: 04/03/2023] Open
Abstract
Background: Head and neck squamous cell carcinoma (HNSCC) is the sixth most common cancer affecting people and accounts for more than 300,000 deaths worldwide. Improvements in treatment modalities, including immunotherapy, have demonstrated promising prognoses for eligible patients. Nevertheless, the five-year overall survival rate has not increased significantly, and the tumor recurrence ratio remains at 50% or higher, except for patients with HPV-positive HNSCC. Over the last decades, nanotechnology has provided promising tools, especially for biomedical applications, due to some remarkable physicochemical properties of numerous nanomaterials, particularly gold nanoparticles. This review addresses the features and some applications of gold nanoparticles reported in the literature over the last five years regarding the diagnosis and treatment of head and neck cancer, highlighting the exciting possibilities of this nanomaterial in oncology. Methods: The scientific papers selected for this review were obtained from the PubMed Advanced, Web of Science, Scopus, ClinicalTrials.gov, and Google Scholar platforms. Conclusions: Results from papers applying gold nanoparticles have suggested that their application is a feasible approach to diagnostics, prognostics, and the treatment of HNC. Moreover, phase I clinical trials suggest that gold nanoparticles are safe and can potentially become theranostic agents for humans.
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Ceccon DM, Amaral PHR, Andrade LM, da Silva MIN, Andrade LAF, Moraes TFS, Bagno FF, Rocha RP, de Almeida Marques DP, Ferreira GM, Lourenço AA, Ribeiro ÁL, Coelho-dos-Reis JGA, da Fonseca FG, Gonzalez JC. New, fast, and precise method of COVID-19 detection in nasopharyngeal and tracheal aspirate samples combining optical spectroscopy and machine learning. Braz J Microbiol 2023:10.1007/s42770-023-00923-5. [PMID: 36854899 PMCID: PMC9974055 DOI: 10.1007/s42770-023-00923-5] [Citation(s) in RCA: 1] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Accepted: 02/07/2023] [Indexed: 03/02/2023] Open
Abstract
Fast, precise, and low-cost diagnostic testing to identify persons infected with SARS-CoV-2 virus is pivotal to control the global pandemic of COVID-19 that began in late 2019. The gold standard method of diagnostic recommended is the RT-qPCR test. However, this method is not universally available, and is time-consuming and requires specialized personnel, as well as sophisticated laboratories. Currently, machine learning is a useful predictive tool for biomedical applications, being able to classify data from diverse nature. Relying on the artificial intelligence learning process, spectroscopic data from nasopharyngeal swab and tracheal aspirate samples can be used to leverage characteristic patterns and nuances in healthy and infected body fluids, which allows to identify infection regardless of symptoms or any other clinical or laboratorial tests. Hence, when new measurements are performed on samples of unknown status and the corresponding data is submitted to such an algorithm, it will be possible to predict whether the source individual is infected or not. This work presents a new methodology for rapid and precise label-free diagnosing of SARS-CoV-2 infection in clinical samples, which combines spectroscopic data acquisition and analysis via artificial intelligence algorithms. Our results show an accuracy of 85% for detection of SARS-CoV-2 in nasopharyngeal swab samples collected from asymptomatic patients or with mild symptoms, as well as an accuracy of 97% in tracheal aspirate samples collected from critically ill COVID-19 patients under mechanical ventilation. Moreover, the acquisition and processing of the information is fast, simple, and cheaper than traditional approaches, suggesting this methodology as a promising tool for biomedical diagnosis vis-à-vis the emerging and re-emerging viral SARS-CoV-2 variant threats in the future.
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Affiliation(s)
- Denny M. Ceccon
- Departamento de Física, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Campus Pampulha 31270-901, Belo Horizonte, Minas Gerais 6627 Brazil
| | - Paulo Henrique R. Amaral
- Departamento de Física, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Campus Pampulha 31270-901, Belo Horizonte, Minas Gerais 6627 Brazil
| | - Lídia M. Andrade
- Departamento de Física, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Campus Pampulha 31270-901, Belo Horizonte, Minas Gerais 6627 Brazil
| | - Maria I. N. da Silva
- Departamento de Física, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Campus Pampulha 31270-901, Belo Horizonte, Minas Gerais 6627 Brazil
| | - Luis A. F. Andrade
- Centro de Tecnologia Em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Thais F. S. Moraes
- Laboratório de Virologia Básica E Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Flavia F. Bagno
- Centro de Tecnologia Em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Raissa P. Rocha
- Centro de Tecnologia Em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | | | - Geovane Marques Ferreira
- Laboratório de Virologia Básica E Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Alice Aparecida Lourenço
- Laboratório de Virologia Básica E Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ágata Lopes Ribeiro
- Laboratório de Virologia Básica E Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Jordana G. A. Coelho-dos-Reis
- Laboratório de Virologia Básica E Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Flavio G. da Fonseca
- Centro de Tecnologia Em Vacinas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil ,Laboratório de Virologia Básica E Aplicada, Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - J. C. Gonzalez
- Departamento de Física, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, Campus Pampulha 31270-901, Belo Horizonte, Minas Gerais 6627 Brazil
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5
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Costa GMJ, Lacerda SMSN, Figueiredo AFA, Wnuk NT, Brener MRG, Andrade LM, Campolina-Silva GH, Kauffmann-Zeh A, Pacifico LGG, Versiani AF, Antunes MM, Souza FR, Cassali GD, Caldeira-Brant AL, Chiarini-Garcia H, de Souza FG, Costa VV, da Fonseca FG, Nogueira ML, Campos GRF, Kangussu LM, Martins EMN, Antonio LM, Bittar C, Rahal P, Aguiar RS, Mendes BP, Procópio MS, Furtado TP, Guimaraes YL, Menezes GB, Martinez-Marchal A, Orwig KE, Brieño-Enríquez M, Furtado MH. High SARS-CoV-2 tropism and activation of immune cells in the testes of non-vaccinated deceased COVID-19 patients. BMC Biol 2023; 21:36. [PMID: 36797789 PMCID: PMC9933832 DOI: 10.1186/s12915-022-01497-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [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: 07/04/2022] [Accepted: 12/06/2022] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND Cellular entry of SARS-CoV-2 has been shown to rely on angiotensin-converting enzyme 2 (ACE2) receptors, whose expression in the testis is among the highest in the body. Additionally, the risk of mortality seems higher among male COVID-19 patients, and though much has been published since the first cases of COVID-19, there remain unanswered questions regarding SARS-CoV-2 impact on testes and potential consequences for reproductive health. We investigated testicular alterations in non-vaccinated deceased COVID-19-patients, the precise location of the virus, its replicative activity, and the immune, vascular, and molecular fluctuations involved in the pathogenesis. RESULTS We found that SARS-CoV-2 testicular tropism is higher than previously thought and that reliable viral detection in the testis requires sensitive nanosensors or RT-qPCR using a specific methodology. Through an in vitro experiment exposing VERO cells to testicular macerates, we observed viral content in all samples, and the subgenomic RNA's presence reinforced the replicative activity of SARS-CoV-2 in testes of the severe COVID-19 patients. The cellular structures and viral particles, observed by transmission electron microscopy, indicated that macrophages and spermatogonial cells are the main SARS-CoV-2 lodging sites, where new virions form inside the endoplasmic reticulum Golgi intermediate complex. Moreover, we showed infiltrative infected monocytes migrating into the testicular parenchyma. SARS-CoV-2 maintains its replicative and infective abilities long after the patient's infection. Further, we demonstrated high levels of angiotensin II and activated immune cells in the testes of deceased patients. The infected testes show thickening of the tunica propria, germ cell apoptosis, Sertoli cell barrier loss, evident hemorrhage, angiogenesis, Leydig cell inhibition, inflammation, and fibrosis. CONCLUSIONS Our findings indicate that high angiotensin II levels and activation of mast cells and macrophages may be critical for testicular pathogenesis. Importantly, our findings suggest that patients who become critically ill may exhibit severe alterations and harbor the active virus in the testes.
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Affiliation(s)
- Guilherme M. J. Costa
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Samyra M. S. N. Lacerda
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - André F. A. Figueiredo
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Natália T. Wnuk
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Marcos R. G. Brener
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Lídia M. Andrade
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | | | | | | | - Alice F. Versiani
- grid.419029.70000 0004 0615 5265Faculdade de Medicina de São Jose do Rio Preto, São Jose do Rio Preto, SP Brazil ,grid.176731.50000 0001 1547 9964Department of Pathology, University of Texas Medical Branch, Galveston, TX USA
| | - Maísa M. Antunes
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Fernanda R. Souza
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Geovanni D. Cassali
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - André L. Caldeira-Brant
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil ,grid.21925.3d0000 0004 1936 9000Department of Obstetrics, Gynecology, and Reproductive Sciences, Magee-Women’s Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Hélio Chiarini-Garcia
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Fernanda G. de Souza
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Vivian V. Costa
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Flavio G. da Fonseca
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Maurício L. Nogueira
- grid.419029.70000 0004 0615 5265Faculdade de Medicina de São Jose do Rio Preto, São Jose do Rio Preto, SP Brazil ,grid.176731.50000 0001 1547 9964Department of Pathology, University of Texas Medical Branch, Galveston, TX USA
| | - Guilherme R. F. Campos
- grid.419029.70000 0004 0615 5265Faculdade de Medicina de São Jose do Rio Preto, São Jose do Rio Preto, SP Brazil
| | - Lucas M. Kangussu
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Estefânia M. N. Martins
- grid.466576.00000 0004 0635 4678Centro de Desenvolvimento da Tecnologia Nuclear-CDTN/CNEN, Belo Horizonte, MG Brazil
| | - Loudiana M. Antonio
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Cintia Bittar
- grid.410543.70000 0001 2188 478XUniversidade Estadual Paulista, São José do Rio Preto, SP Brazil
| | - Paula Rahal
- grid.410543.70000 0001 2188 478XUniversidade Estadual Paulista, São José do Rio Preto, SP Brazil
| | - Renato S. Aguiar
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | | | | | | | - Yuri L. Guimaraes
- Clínica MF Fertilidade Masculina, Belo Horizonte, MG Brazil ,Departamentos de Urologia e de Reprodução Humana da Rede Mater Dei de Saúde, Belo Horizonte, MG Brazil
| | - Gustavo B. Menezes
- grid.8430.f0000 0001 2181 4888Universidade Federal de Minas Gerais, Belo Horizonte, MG Brazil
| | - Ana Martinez-Marchal
- grid.21925.3d0000 0004 1936 9000Department of Obstetrics, Gynecology, and Reproductive Sciences, Magee-Women’s Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Kyle E. Orwig
- grid.21925.3d0000 0004 1936 9000Department of Obstetrics, Gynecology, and Reproductive Sciences, Magee-Women’s Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Miguel Brieño-Enríquez
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Magee-Women's Research Institute, University of Pittsburgh School of Medicine, Pittsburgh, USA.
| | - Marcelo H. Furtado
- Clínica MF Fertilidade Masculina, Belo Horizonte, MG Brazil ,Departamentos de Urologia e de Reprodução Humana da Rede Mater Dei de Saúde, Belo Horizonte, MG Brazil
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6
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Malagrino TRS, Godoy AP, Barbosa JM, Lima AGT, Sousa NCO, Pedrotti JJ, Garcia PS, Paniago RM, Andrade LM, Domingues SH, Silva WM, Ribeiro H, Taha-Tijerina J. Multifunctional Hybrid MoS 2-PEGylated/Au Nanostructures with Potential Theranostic Applications in Biomedicine. Nanomaterials (Basel) 2022; 12:nano12122053. [PMID: 35745394 PMCID: PMC9227389 DOI: 10.3390/nano12122053] [Citation(s) in RCA: 2] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Revised: 06/06/2022] [Accepted: 06/09/2022] [Indexed: 02/07/2023]
Abstract
In this work, flower-like molybdenum disulfide (MoS2) microspheres were produced with polyethylene glycol (PEG) to form MoS2-PEG. Likewise, gold nanoparticles (AuNPs) were added to form MoS2-PEG/Au to investigate its potential application as a theranostic nanomaterial. These nanomaterials were fully characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), photoelectron X-ray spectroscopy (XPS), Fourier-transformed infrared spectroscopy (FTIR), cyclic voltammetry and impedance spectroscopy. The produced hierarchical MoS2-PEG/Au microstructures showed an average diameter of 400 nm containing distributed gold nanoparticles, with great cellular viability on tumoral and non-tumoral cells. This aspect makes them with multifunctional characteristics with potential application for cancer diagnosis and therapy. Through the complete morphological and physicochemical characterization, it was possible to observe that both MoS2-PEG and MoS2-PEG/Au showed good chemical stability and demonstrated noninterference in the pattern of the cell nucleus, as well. Thus, our results suggest the possible application of these hybrid nanomaterials can be immensely explored for theranostic proposals in biomedicine.
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Affiliation(s)
- Thiago R. S. Malagrino
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Anna P. Godoy
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Juliano M. Barbosa
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Abner G. T. Lima
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Nei C. O. Sousa
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Jairo J. Pedrotti
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Pamela S. Garcia
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Roberto M. Paniago
- Departamento de Física, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos, 6.627, Belo Horizonte 31270-901, MG, Brazil; (R.M.P.); (L.M.A.)
| | - Lídia M. Andrade
- Departamento de Física, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos, 6.627, Belo Horizonte 31270-901, MG, Brazil; (R.M.P.); (L.M.A.)
| | - Sergio H. Domingues
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
- MackGraphe, Mackenzie Institute for Advanced Research in Graphene and Nanotechnologies, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil
| | - Wellington M. Silva
- Departamento de Química, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos, 6.627, Belo Horizonte 31270-901, MG, Brazil;
| | - Hélio Ribeiro
- Engineering School, Mackenzie Presbyterian University, Rua da Consolação 896, São Paulo 01302-907, SP, Brazil; (T.R.S.M.); (A.P.G.); (J.M.B.); (A.G.T.L.); (N.C.O.S.); (J.J.P.); (P.S.G.); (S.H.D.); (H.R.)
| | - Jaime Taha-Tijerina
- Engineering Department, Universidad de Monterrey, Av. Ignacio Morones Prieto 4500 Pte., San Pedro Garza García 66238, NL, Mexico
- Engineering Technology Department, University of Texas Rio Grande Valley, Brownsville, TX 78520, USA
- Correspondence:
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7
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Dantas GP, Ferraz FS, Andrade LM, Costa GM. Male reproductive toxicity of inorganic nanoparticles in rodent models: A systematic review. Chem Biol Interact 2022; 363:110023. [DOI: 10.1016/j.cbi.2022.110023] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 06/06/2022] [Accepted: 06/20/2022] [Indexed: 11/03/2022]
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Abstract
Vaccines are the most cost-effective intervention in the management of infectious disease. Much of what we perceive as quality of life is related to a good health status and disease absence, for which vaccines are substantially responsible. Nonetheless, there are many infectious diseases for which no vaccine solution is available. That could be due to limitations of the classic approaches to vaccine development, including inactivated, subunit and attenuated vaccines. Nanostructured immunogens belong to a class of nonclassic vaccines in which nanostructures are loaded with antigen-related molecules. Here, we briefly review important features of the nanostructured vaccines – mainly those based in carbon nanotubes and gold nanorods – and discuss their use to prevent infectious diseases, especially those caused by viruses.
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Affiliation(s)
- Lídia M Andrade
- Laboratório de Nanomateriais, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
| | - Laura Cox
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Campus Pampulha, CEP: 31270–901, Belo Horizonte, MG, Brasil
| | - Alice F Versiani
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brasil
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Campus Pampulha, CEP: 31270–901, Belo Horizonte, MG, Brasil
| | - Flávio G da Fonseca
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Campus Pampulha, CEP: 31270–901, Belo Horizonte, MG, Brasil
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Geraldo JM, Scalzo S, Reis DS, Leão TL, Guatimosim S, Ladeira LO, Andrade LM. HDR brachytherapy decreases proliferation rate and cellular progression of a radioresistant human squamous cell carcinoma in vitro. Int J Radiat Biol 2017; 93:958-966. [DOI: 10.1080/09553002.2017.1341661] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jony M. Geraldo
- Departamento de Anatomia por Imagens, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
- Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Brazil
| | - Sérgio Scalzo
- Departamento de Fisiologia e Biofisica, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Daniela S. Reis
- Departamento de Bioquimica e imunologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Thiago L. Leão
- Departamento de Microbiologia, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Silvia Guatimosim
- Departamento de Fisiologia e Biofisica, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Luiz O. Ladeira
- Centro de Desenvolvimento da Tecnologia Nuclear, Belo Horizonte, Brazil
- Departamento de Fisica, Nanobiomedical Research Group, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Lídia M. Andrade
- Departamento de Fisica, Nanobiomedical Research Group, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Versiani AF, Andrade LM, Martins EMN, Scalzo S, Geraldo JM, Chaves CR, Ferreira DC, Ladeira M, Guatimosim S, Ladeira LO, da Fonseca FG. Gold nanoparticles and their applications in biomedicine. Future Virol 2016. [DOI: 10.2217/fvl-2015-0010] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Although used in medical applications for centuries, the development of nanotechnology has shed new light in the plethora of possible medical and biological applications using gold-based nanostructures. Gold nanostructures are stable and relatively inert in biological systems, leading to low reatogenicity, biocompatibility and general lack of toxicity. Allied to that, gold nanoparticles present optical and electronic properties that have been exploited in a range of biomedical applications. In this review we discuss biologically relevant properties of gold nanoparticles and how they are used in some biomedicine fields, especially those involving biosensing of biological analytes – including viruses and antibodies against them, cancer therapies, and antigen delivery, including viral antigens – as part of nonclassic vaccine strategies.
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Affiliation(s)
- Alice F Versiani
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Campus Pampulha, CEP: 31270–901, Belo Horizonte, MG, Brazil
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Lídia M Andrade
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Laboratório de Nanomateriais, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Estefânia MN Martins
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Laboratório de Química de Nanoestruturas de Carbono. Centro de Desenvolvimento da Tecnologia Nuclear – CDTN/CNEN, Belo Horizonte, MG, Brazil
| | - Sérgio Scalzo
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Laboratório de Sinalização Intracelular, Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jony M Geraldo
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Laboratório de Nanomateriais, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Departamento de Anatomia por Imagem, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Claudilene R Chaves
- Laboratório de Nanomateriais, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Daniele C Ferreira
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marina Ladeira
- Laboratório de Sinalização Intracelular, Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Silvia Guatimosim
- Laboratório de Sinalização Intracelular, Departamento de Fisiologia e Biofísica, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Luiz O Ladeira
- NanoBioMedical Research Group, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
- Laboratório de Nanomateriais, Departamento de Física, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flávio G da Fonseca
- Laboratório de Virologia Básica e Aplicada, Departamento de Microbiologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos, 6627, Campus Pampulha, CEP: 31270–901, Belo Horizonte, MG, Brazil
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Abstract
Calcium (Ca(2+)) is an important multifaceted second messenger that regulates a wide range of cellular events. A Ca(2+)-signaling toolkit has been shown to exist in the nucleus and to be capable of generating and modulating nucleoplasmic Ca(2+) transients. Within the nucleus, Ca(2+) controls cellular events that are different from those modulated by cytosolic Ca(2+). This review focuses on nuclear Ca(2+) signals and their role in regulating physiological and pathological processes.
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Affiliation(s)
- André G Oliveira
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Erika S Guimarães
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil; Molecular Medicine, School of Medicine, Federal University of Minas Gerais, Belo Horizonte, Brazil; and
| | - Lídia M Andrade
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Gustavo B Menezes
- Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - M Fatima Leite
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Brazil;
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12
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Andrade LM, Mendes MA, Kowalski P, Nascimento CAO. Comparative study of different matrix/solvent systems for the analysis of crude lyophilized microalgal preparations using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Rapid Commun Mass Spectrom 2015; 29:295-303. [PMID: 26411627 DOI: 10.1002/rcm.7110] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/02/2014] [Accepted: 11/30/2014] [Indexed: 06/05/2023]
Abstract
RATIONALE Due to increases in greenhouse gas emissions, it is necessary to explore renewable sources of energy. Interesting alternatives are biofuels derived from microalgae. One challenge is the development of a detailed microalgae database compiling species identifications and characterizations that would facilitate microalgae selection for biomass production. Mass spectrometric (MS) analysis using a matrix-assisted laser desorption/ionization (MALDI) source is an advanced technique that enables advancement in this biological area. In this work a MALDI time-of-flight (TOF)MS method for the rapid identification of proteins in whole cells of selected microalgae species was studied. Furthermore, the efficiency of different matrix and solvent systems was tested. MS analyses were performed using an UltrafleXtreme MALDI-TOF mass spectrometer operating in linear positive ion mode. METHODS Mass spectra were acquired in a mass range from 4000 to 20,000 Da with ions generated from Smartbeam laser irradiation using a frequency of 2000 Hz, a PIE 100 ns and a lens 7 kV. The voltage was 25 kV for the first ion source and 23 kV for the second. Each spectrum was generated by averaging of 10,000 laser shots and the laser irradiance was set at 95-100%. RESULTS Similar mass spectra were obtained for all matrices (SA, HCCA, DHB and sDHB); however, the use of the sDHB matrix resulted in spectrum profiles with a greater amount number of proteins, a better signal/noise (S/N) ratio and higher intensities for the majority of microalgae analyzed. Trifluoroacetic acid (TFA) content was also studied and the best results in terms of S/N ratio, number of proteins and signal intensities were obtained with 0.1% TFA in the matrix solvent. The addition of isopropanol did not produce improvement in the quality of spectrum profiles. CONCLUSIONS Therefore, the optimal matrix for the analysis of protein from intact microalgae cells is sDHB with TA50 as the matrix solvent and without isopropanol. These conditions allow the acquisition of high quality spectrum profiles.
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Affiliation(s)
- L M Andrade
- Chemical Engineering Department of Polytechnic School of University of São Paulo, Av Prof Lineu Prestes 580, Bloco 21, térreo, 05508-900, São Paulo, SP, Brazil
| | - M A Mendes
- Chemical Engineering Department of Polytechnic School of University of São Paulo, Av Prof Lineu Prestes 580, Bloco 21, térreo, 05508-900, São Paulo, SP, Brazil
| | - P Kowalski
- Bruker Daltonics, 40 Manning Road, Billerica, MA, 01821, USA
| | - C A O Nascimento
- Chemical Engineering Department of Polytechnic School of University of São Paulo, Av Prof Lineu Prestes 580, Bloco 21, térreo, 05508-900, São Paulo, SP, Brazil
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dos Santos VM, Andrade LM, Leal CT, de Souza LA, Lima RLM, Nogueira AL. Two women with cerebral venous thrombosis: oral contraceptives? W INDIAN MED J 2013; 62:260-263. [PMID: 24564051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Two cases of cerebral venous thrombosis are reported. Patients were apparently healthy 39 and 28-year old females with non-specific presenting features. Image findings were characteristic of cerebral sinus thrombosis. The younger patient received progesterone to treat placental abruption eight years previously; she had cerebral venous thrombosis while using oral contraception. Both patients had used contraceptive pills for a long time. Oral hormonal contraceptives may increase the risk of vascular events, even in people without personal or family history of venous thrombosis. Modern imaging methods have contributed to early diagnosis, but the possibility of under diagnosis still persists. This report aims to increase the awareness of health-workers about cerebral venous thrombosis in women, an entity often misdiagnosed, under diagnosed and under-reported.
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Affiliation(s)
- V M dos Santos
- Catholic University Medical Course, Brasilia-DF, Brasil.
| | - L M Andrade
- Armed Forces Hospital (HFA), Brasilia-DF, Brasil
| | - C T Leal
- Armed Forces Hospital (HFA), Brasilia-DF, Brasil
| | - L A de Souza
- Armed Forces Hospital (HFA), Brasilia-DF, Brasil
| | - R L M Lima
- Angolan physician in the postgraduate training programme of HFA, Brasilia-DF, Brasil
| | - A L Nogueira
- Catholic University Medical Course, Brasilia-DF, Brasil
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Guerra MT, Fonseca EA, Melo FM, Andrade VA, Aguiar CJ, Andrade LM, Pinheiro ACN, Casteluber MF, Resende RR, Pinto MCX, Fernandes SOA, Cardoso VN, Souza–Fagundes EM, Menezes GB, de Paula AM, Nathanson MH, Leite MF. Mitochondrial calcium regulates rat liver regeneration through the modulation of apoptosis. Hepatology 2011; 54:296-306. [PMID: 21503946 PMCID: PMC3125477 DOI: 10.1002/hep.24367] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
Abstract
UNLABELLED Subcellular Ca(2+) signals control a variety of responses in the liver. For example, mitochondrial Ca(2+) (Ca(mit)(2+)) regulates apoptosis, whereas Ca(2+) in the nucleus regulates cell proliferation. Because apoptosis and cell growth can be related, we investigated whether Ca(mit)(2+) also affects liver regeneration. The Ca(2+)-buffering protein parvalbumin, which was targeted to the mitochondrial matrix and fused to green fluorescent protein, was expressed in the SKHep1 liver cell line; the vector was called parvalbumin-mitochondrial targeting sequence-green fluorescent protein (PV-MITO-GFP). This construct properly localized to and effectively buffered Ca(2+) signals in the mitochondrial matrix. Additionally, the expression of PV-MITO-GFP reduced apoptosis induced by both intrinsic and extrinsic pathways. The reduction in cell death correlated with the increased expression of antiapoptotic genes [B cell lymphoma 2 (bcl-2), myeloid cell leukemia 1, and B cell lymphoma extra large] and with the decreased expression of proapoptotic genes [p53, B cell lymphoma 2-associated X protein (bax), apoptotic peptidase activating factor 1, and caspase-6]. PV-MITO-GFP was also expressed in hepatocytes in vivo with an adenoviral delivery system. Ca(mit)(2+) buffering in hepatocytes accelerated liver regeneration after partial hepatectomy, and this effect was associated with the increased expression of bcl-2 and the decreased expression of bax. CONCLUSION Together, these results reveal an essential role for Ca(mit)(2+) in hepatocyte proliferation and liver regeneration, which may be mediated by the regulation of apoptosis.
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Affiliation(s)
- Mateus T. Guerra
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil, Section of Digestive Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Emerson A. Fonseca
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Flavia M. Melo
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - V. A Andrade
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carla J. Aguiar
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil, Izabela Hendrix Metodist Institute
| | - Lídia M. Andrade
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil, René Rachou Research Center, Oswaldo Cruz Foundation
| | - Ana Cristina N. Pinheiro
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marisa F. Casteluber
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rodrigo R. Resende
- Nanobiotechnology Laboratory, Federal University of São João del Rei, Brazil
| | - Mauro C. X. Pinto
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Simone O. A. Fernandes
- Radioisotope Laboratory, Department of Clinical and Toxicological Analysis – Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Valbert N. Cardoso
- Radioisotope Laboratory, Department of Clinical and Toxicological Analysis – Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Elaine M. Souza–Fagundes
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Gustavo B. Menezes
- Department of Morphology, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ana M. de Paula
- Department of Physics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Michael H. Nathanson
- Section of Digestive Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - M. Fatima Leite
- Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil, Howard Hughes Medical Institute
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DeMarco L, Stratakis CA, Boson WL, Jakbovitz O, Carson E, Andrade LM, Amaral VF, Rocha JL, Choursos GP, Nordenskjöld M, Friedman E. Sporadic cardiac myxomas and tumors from patients with Carney complex are not associated with activating mutations of the Gs alpha gene. Hum Genet 1996; 98:185-8. [PMID: 8698339 DOI: 10.1007/s004390050187] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Cardiac myxomas are rare tumors that may be encountered sporadically or in the context of the Carney complex. The molecular basis for the development of cardiac myxomas and Carney complex tumors is unclear. Pathological myocardial function and myocardial hypertrophy have been associated with alterations in the heterotrimeric GTP-binding proteins. The postulated proto-oncogenic character of the gene encoding the alpha sub-unit of the stimulatory GTP-binding protein Gs alpha (gsp) in pituitary and thyroid tumors, the finding of identical somatic gsp mutations in the myocardium of patients with McCune-Albright syndrome, and the associated endocrine anomalies of the Carney complex prompted us to investigate the occurrence of activating missense mutations in the Gs alpha gene in 10 sporadically occurring atrial myxomas and in 8 tumors from 7 patients with Carney complex. No gsp mutations could be demonstrated by using the polymerase chain reaction and denaturing gradient gel electrophoresis complemented by direct DNA sequencing. Thus, activating Gs alpha mutations neither are associated with the development of atrial myxomas, nor can be demonstrated in other tumors from patients with Carney complex. The significance of these mutations in the myocardium of asymptomatic patients with McCune-Albright syndrome remains to be determined.
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Affiliation(s)
- L DeMarco
- Department of Pharmacology, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
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Kritski AL, Marques MJ, Rabahi MF, Vieira MA, Werneck-Barroso E, Carvalho CE, Andrade GDN, Bravo-de-Souza R, Andrade LM, Gontijo PP, Riley LW. Transmission of tuberculosis to close contacts of patients with multidrug-resistant tuberculosis. Am J Respir Crit Care Med 1996; 153:331-5. [PMID: 8542139 DOI: 10.1164/ajrccm.153.1.8542139] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Multidrug-resistant tuberculosis (MDRTB) has emerged as a major public health problem worldwide. To determine the incidence and risk factors associated with tuberculosis among contacts of MDRTB index cases, we studied human immunodeficiency virus-seronegative close contacts of 64 culture-confirmed MDRTB patients in Rio de Janeiro, Brazil. Between March 1988 and July 1992, tuberculosis developed in 17 (7.8%) of 218 previously healthy close contacts of 64 MDRTB index cases (1.6 cases per 1,000-person-months of contact). Among strains of Mycobacterium tuberculosis isolated from 13 contacts of 12 index cases, six (46%) had susceptibility patterns identical to those of their index cases, four (31%) had different patterns of resistance, and three (23%) were susceptible to all drugs. Tuberculosis developed more frequently in male contacts (p < 0.05), persons > or = 15 yr of age (p < 0.05), nonwhites (p < 0.001), and persons not previously vaccinated with bacillus Calmette-Guerin (BCG) (p < 0.05). The association of BCG vaccination with decreased risk of disease was significant even when this variable was controlled (by Cox's regression analysis) for age, sex, race, purified protein derivative (PPD) status, and isoniazid prophylaxis. BCG vaccination appears to offer protection against tuberculosis during prolonged exposures to persons with MDRTB, which identifies a novel and specific indication of BCG use.
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Affiliation(s)
- A L Kritski
- Serviço de Pneumologia, Hospital Clementino Fraga Filho, Universidade Federal de Rio de Janeiro, Brazil
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Schmitt FC, Pereira EM, Andrade LM, Torresan M, de Lucca L. The proliferating cell nuclear antigen index in breast carcinomas does not correlate with mitotic index and estrogen receptor immunoreactivity. Pathol Res Pract 1994; 190:786-91. [PMID: 7831155 DOI: 10.1016/s0344-0338(11)80426-7] [Citation(s) in RCA: 9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
To investigate the expression of a marker of cell proliferation (PCNA/Cyclin) and its putative relationship with histological grading, mitotic index and estrogen receptor immunoreactivity, we studied twenty-seven cases of invasive breast carcinoma in formalin-fixed, paraffin-embedded tissue sections. The PCNA and estrogen receptor were detected by the PC 10 and H 222 monoclonal antibodies respectively, using an avidin-biotin-peroxidase method. The median value of PCNA index was 20.9% with a range from 1.4 to 84.2%. We did not find any significant relationship between PCNA index and the histological grading, mitotic index and estrogen receptor immunoreactivity. We conclude that PCNA detected by the monoclonal antibody PC 10 in formalin-fixed material looks at present unreliable as a proliferation marker in breast carcinoma.
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Affiliation(s)
- F C Schmitt
- Department of Pathology, School of Medicine, Botucatu, UNESP, SP, Brazil
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Schmitt FC, Andrade LM, de Lucca LA. Detection of estrogen receptor in formalin-fixed and paraffin-embedded breast carcinoma: correlation with histological patterns. Rev Paul Med 1992; 110:158-62. [PMID: 1341005] [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: 12/26/2022]
Abstract
The authors studied the expression of estrogen receptor (ER) in tissues of breast carcinomas which were previously fixed in formalin and paraffin-embedded. The ER expression was correlated with several histological findings, namely grade of differentiation, tumor necrosis, desmoplasia, lymphocytic infiltration and elastosis. The ER was detected in tissues using the avidin-biotin immunoperoxidase technique associated with the H222 monoclonal antibody from Abbott. All 39 biopsies were of infiltrating ductal carcinoma of breast and 16 of them expressed ER. The statistical analysis showed that the expression of ER was correlated with histological findings of good prognosis as well differentiated carcinomas, no tumor necrosis, absence or mild lymphocytic infiltration around the tumor cells and severe elastosis.
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Affiliation(s)
- F C Schmitt
- Departament of Pathology, Faculdade de Medicina de Botucatu, UNESP, SP, Brasil
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Netto MB, Vilar EA, Andrade LM, da Silva RDC, Neves MI. [The pattern of bone marrow lesions in acquired immunodeficiency (AIDS)]. Rev Inst Med Trop Sao Paulo 1988; 30:253-8. [PMID: 3241942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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dos Santos Damasco MH, Talhari S, Viana SM, Signorelli M, Saad MH, Andrade LM. Secondary dapsone-resistant leprosy in Brazil: a preliminary report. LEPROSY REV 1986; 57:5-8. [PMID: 3517536 DOI: 10.5935/0305-7518.19860002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Silva C, Lima AO, Andrade LM, Mattos O. Attempts to convert lepromatous into tuberculoid-type leprosy with blood lymphocyte extracts from sensitized donors. Clin Exp Immunol 1973; 15:87-92. [PMID: 4765722 PMCID: PMC1553871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Two groups of lepromatous patients (L type of leprosy) were injected intramuscularly and respectively with the Lawrence's transfer factor (LTF) or a ribonucleic acid (RNA) extracted from viable blood lymphocytes of healthy donors hypersensitive to lepromin (48–72 hr and 20–30 days), tuberculin (PPD), toxoplasmin and histoplasmin. Each patient received a single dose of LTF or RNA obtained from 109 lymphocytes and was carefully observed for a period of 4 months. Histopathology of skin lesions and of lymph nodes were repeatedly performed. The results of intradermal tests with antigens were read at different times up to 120 days after the injection of LTF and RNA. Delayed cutaneous reaction to some antigens was induced in three patients injected with LTF and in two others injected with RNA. The lepromin reaction read at the end of 48–72 hr and after 20–30 days remained negative in all patients during 120 days of observation. Clinical and histopathologic signs of transformation into tuberculoid leprosy could not be observed in the eight patients tested.
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Azulay RD, Andrade LM. [Study of intracytoplasmatic lipids in various histological structures found in leprosy]. An Bras Dermatol 1969; 44:181-9. [PMID: 5381752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
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