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Timoteo EF, Silva DF, Oliveira TMD, José A, Malaguti C. Real-time telerehabilitation for chronic respiratory disease and post-COVID-19: A systematic review and meta-analysis. J Telemed Telecare 2024:1357633X241241572. [PMID: 38594927 DOI: 10.1177/1357633x241241572] [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] [Indexed: 04/11/2024]
Abstract
INTRODUCTION Telerehabilitation may facilitate access and adherence to pulmonary rehabilitation. Given the heterogeneity in existing telerehabilitation studies, it is still necessary to identify the most effective, safe, and cost-efficient strategy for clinical implementation, as well as the necessary level of supervision during telerehabilitation. The aim of this review was to determine the effectiveness and safety of real-time telerehabilitation for chronic respiratory diseases and post-COVID-19 compared to no-rehabilitation, center-based rehabilitation or asynchronous telerehabilitation. METHODS A comprehensive search was conducted in six databases until 30 April 2023. Clinical trials of real-time telerehabilitation supervised via videoconference in adults with diagnosis of any chronic respiratory disease or post-COVID-19 were included. RESULTS Twelve studies with 1540 participants were included. Very-low to moderate certainty evidence showed no difference between real-time telerehabilitation and center-based pulmonary rehabilitation. Studies included in this review reported high adherence rates to real-time telerehabilitation and completion rate, with no difference compared to center-based pulmonary rehabilitation. When compared to no-rehabilitation, the results of this review provide low-certainty evidence that real-time telerehabilitation may have a potential effect on exercise capacity at the end of the intervention, with no better results in others outcomes. No studies comparing real-time telerehabilitation with asynchronous telerehabilitation were found. CONCLUSION Real-time telerehabilitation is safe and it seems to promote similar effects to center-based pulmonary rehabilitation. However, the certainty of this evidence ranged from very-low to moderate. Therefore, real-time telerehabilitation offers an alternative to center-based pulmonary rehabilitation models. This review provides a clear definition of real-time telerehabilitation, facilitating results interpretation and clinical applicability.
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Affiliation(s)
- Esther F Timoteo
- Postgraduate Research Program on Rehabilitation Sciences, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Denise F Silva
- Postgraduate Research Program on Rehabilitation Sciences, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Túlio Md de Oliveira
- Postgraduate Research Program on Rehabilitation Sciences, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
- Postgraduate Research Program on Health, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Anderson José
- Postgraduate Research Program on Rehabilitation Sciences, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Carla Malaguti
- Postgraduate Research Program on Rehabilitation Sciences, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
- Postgraduate Research Program on Health, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
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Rosa LLS, Andrade-Júnior FP, Cordeiro LV, Souza HDS, Athayde-Filho PF, Gadelha DDA, Melo DM, Silva DF, Alves DN, Sobreira ALC, Ferreira SRD, Teixeira APC, Farias BKS, Firmino RG, Maia AKHL, Lima EO. Association study between ceftriaxone and a synthetic amide against strains of Pseudomonas aeruginosa. BRAZ J BIOL 2023; 83:e274149. [PMID: 37820207 DOI: 10.1590/1519-6984.274149] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 07/23/2023] [Indexed: 10/13/2023] Open
Abstract
Pseudomonas aeruginosa is a non-lactose fermenting Gram-negative bacteria responsible for causing numerous nosocomial infections. The present research aimed to analyze the anti-Pseudomonas aeruginosa potential of 2-Chloro-N-(4-fluoro-3-nitrophenyl)acetamide (A8). The antibacterial potential of A8 was evaluated from the Minimum Inhibitory Concentration (MIC), Minimum Bactericidal Concentration (MBC) and Association using the checkerboard method. MIC and MBC values were 512 µg/mL for all P. aeruginosa strains evaluated, demonstrating predominantly bactericidal activity. Furthermore, when A8 was associated with the drug ceftriaxone, pharmacological additivity and indifference were evidenced. In this sense, the synthetic amide was interesting, since it demonstrates the potential to become a possible candidate for an antimicrobial drug.
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Affiliation(s)
- L L S Rosa
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - F P Andrade-Júnior
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - L V Cordeiro
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - H D S Souza
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Química, João Pessoa, PB, Brasil
| | - P F Athayde-Filho
- Universidade Federal da Paraíba - UFPB, Centro de Ciências Exatas e da Natureza, Programa de Pós-graduação em Química, João Pessoa, PB, Brasil
| | - D D A Gadelha
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - D M Melo
- Universidade Federal de Campina Grande - UFCG, Hospital Universitário Alcides Carneiro, Campina Grande, PB, Brasil
| | - D F Silva
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - D N Alves
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - A L C Sobreira
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica em Medicamentos - DITM, João Pessoa, PB, Brasil
| | - S R D Ferreira
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - A P C Teixeira
- Universidade Federal da Paraíba - UFPB, Programa de Pós-graduação em Desenvolvimento e Inovação Tecnológica em Medicamentos - DITM, João Pessoa, PB, Brasil
| | - B K S Farias
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - R G Firmino
- Universidade Estadual da Paraíba - UEPB, Programa de Pós-graduação em Psicologia da Saúde, Campina Grande, PB, Brasil
| | - A K H L Maia
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
| | - E O Lima
- Universidade Federal da Paraíba - UFPB, Centro de Ciências da Saúde, Programa de Pós-graduação em Produtos Naturais e Sintéticos Bioativos, João Pessoa, PB, Brasil
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Diniz-Neto H, Silva SL, Cordeiro LV, Silva DF, Oliveira RF, Athayde-Filho PF, Oliveira-Filho AA, Guerra FQS, Lima EO. Antifungal activity of 2-chloro-N-phenylacetamide: a new molecule with fungicidal and antibiofilm activity against fluconazole-resistant Candida spp. BRAZ J BIOL 2022; 84:e255080. [PMID: 35262564 DOI: 10.1590/1519-6984.255080] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 01/19/2022] [Indexed: 11/22/2022] Open
Abstract
In the current context of emerging drug-resistant fungal pathogens such as Candida albicans and Candida parapsilosis, discovery of new antifungal agents is an urgent matter. This research aimed to evaluate the antifungal potential of 2-chloro-N-phenylacetamide against fluconazole-resistant clinical strains of C. albicans and C. parapsilosis. The antifungal activity of 2-chloro-N-phenylacetamide was evaluated in vitro by the determination of the minimum inhibitory concentration (MIC), minimum fungicidal concentration (MFC), inhibition of biofilm formation and its rupture, sorbitol and ergosterol assays, and association between this molecule and common antifungal drugs, amphotericin B and fluconazole. The test product inhibited all strains of C. albicans and C. parapsilosis, with a MIC ranging from 128 to 256 µg.mL-1, and a MFC of 512-1,024 µg.mL-1. It also inhibited up to 92% of biofilm formation and rupture of up to 87% of preformed biofilm. 2-chloro-N-phenylacetamide did not promote antifungal activity through binding to cellular membrane ergosterol nor it damages the fungal cell wall. Antagonism was observed when combining this substance with amphotericin B and fluconazole. The substance exhibited significant antifungal activity by inhibiting both planktonic cells and biofilm of fluconazole-resistant strains. Its combination with other antifungals should be avoided and its mechanism of action remains to be established.
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Affiliation(s)
- H Diniz-Neto
- Universidade Federal da Paraíba - UFPB, Department of Pharmaceutical Sciences - DCF, João Pessoa, PB, Brasil
| | - S L Silva
- Universidade Federal da Paraíba - UFPB, Department of Pharmaceutical Sciences - DCF, João Pessoa, PB, Brasil
| | - L V Cordeiro
- Universidade Federal da Paraíba - UFPB, Department of Pharmaceutical Sciences - DCF, João Pessoa, PB, Brasil
| | - D F Silva
- Universidade Federal da Paraíba - UFPB, Department of Pharmaceutical Sciences - DCF, João Pessoa, PB, Brasil
| | - R F Oliveira
- Universidade Federal da Paraíba - UFPB, Department of Chemistry - DQ, João Pessoa, PB, Brasil
| | - P F Athayde-Filho
- Universidade Federal da Paraíba - UFPB, Department of Chemistry - DQ, João Pessoa, PB, Brasil
| | - A A Oliveira-Filho
- Universidade Federal de Campina Grande - UFCG, Rural Health and Technology Center - CTSR, Patos, PB, Brasil
| | - F Q S Guerra
- Universidade Federal da Paraíba - UFPB, Department of Pharmaceutical Sciences - DCF, João Pessoa, PB, Brasil
| | - E O Lima
- Universidade Federal da Paraíba - UFPB, Department of Pharmaceutical Sciences - DCF, João Pessoa, PB, Brasil
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Santos WA, Dourado KMC, Araújo FA, Jesus RLC, Moraes RA, Oliveira SCDS, Alves QL, Simões LO, Casais-E-Silva LL, Costa RS, Velozo ES, Silva DF. Braylin induces a potent vasorelaxation, involving distinct mechanisms in superior mesenteric and iliac arteries of rats. Naunyn Schmiedebergs Arch Pharmacol 2021; 394:437-446. [PMID: 33034715 DOI: 10.1007/s00210-020-01985-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 10/04/2020] [Indexed: 11/28/2022]
Abstract
Arterial hypertension is a risk factor for various cardiovascular and renal diseases, representing a major public health challenge. Although a wide range of treatment options are available for blood pressure control, many hypertensive individuals remain with uncontrolled hypertension. Thus, the search for new substances with antihypertensive potential becomes necessary. Coumarins, a group of polyphenolic compounds derived from plants, have attracted intense interest due to their diverse pharmacological properties, like potent antihypertensive activities. Braylin (6-methoxyseselin) is a coumarin identified in the Zanthoxylum tingoassuiba species, described as a phosphodiesterase-4 (PDE4) inhibitor. Although different coumarin compounds have been described as potent antihypertensive agents, the activity of braylin on the cardiovascular system has yet to be investigated. To investigate the vasorelaxation properties of braylin and its possible mechanisms of action, we performed in vitro studies using superior mesenteric arteries and the iliac arteries isolated from rats. In this study, we demonstrated, for the first time, that braylin induces potent vasorelaxation, involving distinct mechanisms from two different arteries, isolated from rats. A possible inhibition of phosphodiesterase, altering the cyclic adenosine monophosphate (cAMP)/cAMP-dependent protein kinase (PKA) pathway, may be correlated with the biological action of braylin in the mesenteric vessel, while in the iliac artery, the biological action of braylin may be correlated with increase of cyclic guanosine monophosphate (cGMP), followed by BKCa, Kir, and Kv channel activation. Together, these results provide evidence that braylin can represent a potential therapeutic use in preventing and treating cardiovascular diseases.
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Affiliation(s)
- W A Santos
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - K M C Dourado
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - F A Araújo
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation - FIOCRUZ, Rio de Janeiro, Bahia, Brazil
| | - R L C Jesus
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - R A Moraes
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - S C D S Oliveira
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - Q L Alves
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - L O Simões
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - L L Casais-E-Silva
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil
| | - R S Costa
- Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| | - E S Velozo
- Faculty of Pharmacy, Federal University of Bahia, Salvador, Bahia, Brazil
| | - D F Silva
- Laboratory of Cardiovascular Physiology and Pharmacology, Federal University of Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, Salvador, Bahia, 40110-902, Brazil.
- Gonçalo Moniz Institute, Oswaldo Cruz Foundation - FIOCRUZ, Rio de Janeiro, Bahia, Brazil.
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Esteves AR, Palma AM, Gomes R, Santos D, Silva DF, Cardoso SM. Acetylation as a major determinant to microtubule-dependent autophagy: Relevance to Alzheimer's and Parkinson disease pathology. Biochim Biophys Acta Mol Basis Dis 2018; 1865:2008-2023. [PMID: 30572013 DOI: 10.1016/j.bbadis.2018.11.014] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/29/2018] [Accepted: 11/16/2018] [Indexed: 10/27/2022]
Abstract
Protein post-translational modifications (PTMs) that potentiate protein aggregation have been implicated in several neurological disorders, including Alzheimer's (AD) and Parkinson's disease (PD). In fact, Tau and alpha-synuclein (ASYN) undergo several PTMs potentiating their aggregation and neurotoxicity. Recent data posits a role for acetylation in Tau and ASYN aggregation. Herein we aimed to clarify the role of Sirtuin-2 (SIRT2) and HDAC6 tubulin deacetylases as well as p300 acetyltransferase in AD and PD neurodegeneration. We used transmitochondrial cybrids that recapitulate pathogenic alterations observed in sporadic PD and AD patient brains and ASYN and Tau cellular models. We confirmed that Tau protein and ASYN are microtubules (MTs)-associated proteins (MAPs). Moreover, our results suggest that α-tubulin acetylation induced by SIRT2 inhibition is functionally associated with the improvement of MT dynamic determined by decreased Tau phosphorylation and by increased Tau/tubulin and ASYN/tubulin binding. Our data provide a strong evidence for a functional role of tubulin and MAPs acetylation on autophagic vesicular traffic and cargo clearance. Additionally, we showed that an accumulation of ASYN oligomers imbalance mitochondrial dynamics, which further compromise autophagy. We also demonstrated that an increase in Tau acetylation is associated with Tau phosphorylation. We found that p300, HDAC6 and SIRT2 influences Tau phosphorylation and autophagic flux in AD. In addition, we demonstrated that p300 and HDAC6 modulate Tau and Tubulin acetylation. Overall, our data disclose the role of Tau and ASYN modifications through acetylation in AD and PD pathology, respectively. Moreover, this study indicates that MTs can be a promising therapeutic target in the field of neurodegenerative disorders in which intracellular transport is altered.
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Affiliation(s)
- A R Esteves
- CNC - Centro de Neurociências e Biologia Celular, Universidade de Coimbra, Coimbra, Portugal.
| | - A M Palma
- CNC - Centro de Neurociências e Biologia Celular, Universidade de Coimbra, Coimbra, Portugal
| | - R Gomes
- CNC - Centro de Neurociências e Biologia Celular, Universidade de Coimbra, Coimbra, Portugal
| | - D Santos
- CNC - Centro de Neurociências e Biologia Celular, Universidade de Coimbra, Coimbra, Portugal
| | - D F Silva
- CNC - Centro de Neurociências e Biologia Celular, Universidade de Coimbra, Coimbra, Portugal
| | - S M Cardoso
- CNC - Centro de Neurociências e Biologia Celular, Universidade de Coimbra, Coimbra, Portugal; Faculdade de Medicina, Universidade de Coimbra, Coimbra, Portugal
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Silva DF, Friis TE, Camargo NHA, Xiao Y. Characterization of mesoporous calcium phosphates from calcareous marine sediments containing Si, Sr and Zn for bone tissue engineering. J Mater Chem B 2016; 4:6842-6855. [PMID: 32263578 DOI: 10.1039/c6tb02255c] [Citation(s) in RCA: 10] [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] [Indexed: 12/28/2022]
Abstract
Calcium phosphates (CAPs) can be produced from either biologically sourced materials or mineral deposits. The raw materials impart unique properties to the CAPs due to innate trace amounts of elements that affect the crystal structure, morphology and stoichiometry. Using calcium carbonate (CaCO3) precursors derived from fossilized calcareous marine sediments (FCMSs), we have synthesized a novel class of CAP biomaterials, termed fm-CaPs, with defined Ca/P molar ratios of 1.4 and 1.7 using a wet synthesis method. Compared with commercially available CAP biomaterials, such as hydroxyapatite (HA) and beta-tricalcium phosphate (β-TCP), fm-CaP1.7 had a biphasic composition consisting of an HA phase (in a hexagonal system) and a β-TCP phase (in a rhombohedral crystalline system), which is desirable for the current design of bone substitutes, whereas fm-CaP1.4 consisted of an HA phase and a beta-dicalcium pyrophosphate phase (in a tetragonal system). These bioceramics exhibited a fringe structure of regular crystallographic orientation with well-ordered mesoporous channels. The FCMS raw material imparted trace amounts of silicon (Si), strontium (Sr) and zinc (Zn) to fm-CaPs; these are elements that are important for bone formation. The cyto-compatibility of these biomaterials and their effects on cellular activity were evaluated using osteoblast cells. Cell proliferation assays revealed no signs of cytotoxicity, whereas cells growth was equal to or better than HA and β-TCP controls. The SEM analysis of the cell and material interactions showed good cell spreading on the fm-CaP materials that was comparable to β-TCP and in vitro assays suggested robust osteogenic differentiation, as seen by increased mineralization (alizarin red) and upregulation of osteogenic gene expression. Our results indicate that fm-CaP1.7, in particular, has chemical, physical and morphological properties that make this material suitable for applications that promote bone tissue regeneration.
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Affiliation(s)
- D F Silva
- Programa de Pós Graduação em Ciência e Engenharia de Materiais, Universidade do Estado de Santa Catarina, 89.223-100, Joinville, SC, Brazil.
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Simões LO, Conceição-Filho G, Ribeiro TS, Jesus AM, Fregoneze JB, Silva AQG, Petreanu M, Cechinel-Filho V, Niero R, Niero H, Tamanaha MS, Silva DF. Evidences of antihypertensive potential of extract from Solanum capsicoides All. in spontaneously hypertensive rats. Phytomedicine 2016; 23:498-508. [PMID: 27064009 DOI: 10.1016/j.phymed.2016.02.020] [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: 03/06/2015] [Revised: 01/19/2016] [Accepted: 02/20/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Solanum capsicoides All. is morphologically similar to Solanum sisymbriifolium Lam. which is used in folk medicine in South America for antihypertensive and diuretics purposes. This similarity has led to species identification errors, which therefore may result in errors by patients. PURPOSE To evaluate the antihypertensive and diuretics potential of the methanol extract from Solanum capsicoides All. (MeOH-Sc), in vitro and in vivo, in spontaneously hypertensive rats (SHR). METHODS Initial experiments were performed in rat mesenteric artery to evaluate the in vitro vascular effect of MeOH-Sc and its fractions, in addition to the mechanisms involved during the observed effect. Mean arterial pressure (MAP) and heart rate (HR) were recorded in non-anesthetised hypertensive and normotensive rats. In another set of experiments, MeOH-Sc was administered for 21 consecutive days. Daily body weight measurements were conducted and MAP, HR and urinary volume were measured every 5 days. The mesenteric artery from treated animals was tested for phenylephrine and sodium nitroprussiate (SNP) sensitivity. RESULTS Initially, MeOH-Sc and fractions relaxed phenylephrine-induced contractions in mesenteric artery rings. The vasorelaxant effect was not changed in the presence of a blocker of eNOS (L-NAME) in rings with an intact endothelium. In denuded-endothelium rings, the vasorelaxant response was significantly reduced in the presence of a cAMP inhibitor (SQ 22536 10 µM) in SHR but not in Wistar Kyoto rats (WKY). However, in the presence of a cGMP inhibitor (ODQ 10 µM), a curve shift to the right was observed in WKY animals, but not in SHR. Intravenous bolus injections of MeOH-Sc into non-anesthetised SHR and WKY, induced hypotension that was associated with an increase in HR. A significant antihypertensive effect was observed in animals that received MeOH-Sc orally for 21 days, which also prevented the development of cardiac hypertrophy. Urine volume from animals treated with MeOH-Sc significantly increased. Finally, MeOH-Sc induced beneficial changes in vascular responsiveness. CONCLUSION MeOH-Sc has a potential antihypertensive effect in SHR.
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Affiliation(s)
- L O Simões
- Laboratório de Fisiologia e Farmacologia Endócrina e Cardiovascular, Departamento de Biorregulação, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, BA 40110-902 Salvador, Brazil
| | - G Conceição-Filho
- Laboratório de Fisiologia e Farmacologia Endócrina e Cardiovascular, Departamento de Biorregulação, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, BA 40110-902 Salvador, Brazil
| | - T S Ribeiro
- Laboratório de Fisiologia e Farmacologia Endócrina e Cardiovascular, Departamento de Biorregulação, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, BA 40110-902 Salvador, Brazil
| | - A M Jesus
- Laboratório de Fisiologia e Farmacologia Endócrina e Cardiovascular, Departamento de Biorregulação, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, BA 40110-902 Salvador, Brazil
| | - J B Fregoneze
- Laboratório de Neurociências, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon,Vale do Canela, BA 40110-902, Salvador, Brazil
| | - A Q G Silva
- Laboratório de Neurociências, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon,Vale do Canela, BA 40110-902, Salvador, Brazil
| | - M Petreanu
- Programa de Pós Graduação em Ciências Farmacêuticas e Núcleo de Investigações Químico-Farmacêuticas (NIQFAR)-Curso de Farmácia, CCS/UNIVALI, Rua Uruguai, 450, Centro, SC 88302-901, Itajaí, (Brazil
| | - V Cechinel-Filho
- Programa de Pós Graduação em Ciências Farmacêuticas e Núcleo de Investigações Químico-Farmacêuticas (NIQFAR)-Curso de Farmácia, CCS/UNIVALI, Rua Uruguai, 450, Centro, SC 88302-901, Itajaí, (Brazil
| | - R Niero
- Laboratório de Estudos sobre Algas Nocivas (LEAN), Centro de Ciências Tecnológicas da Terra e do Mar - CTTMar, Rua Uruguai, 450, Centro, SC 88302-901, Itajai, Brazil
| | - H Niero
- Laboratório de Estudos sobre Algas Nocivas (LEAN), Centro de Ciências Tecnológicas da Terra e do Mar - CTTMar, Rua Uruguai, 450, Centro, SC 88302-901, Itajai, Brazil
| | - M S Tamanaha
- Laboratório de Estudos sobre Algas Nocivas (LEAN), Centro de Ciências Tecnológicas da Terra e do Mar - CTTMar, Rua Uruguai, 450, Centro, SC 88302-901, Itajai, Brazil
| | - D F Silva
- Laboratório de Fisiologia e Farmacologia Endócrina e Cardiovascular, Departamento de Biorregulação, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Avenida Reitor Miguel Calmon, Vale do Canela, BA 40110-902 Salvador, Brazil..
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Silva DF, Santana I, Esteves AR, Baldeiras I, Arduino DM, Oliveira CR, Cardoso SM. Prodromal metabolic phenotype in MCI cybrids: implications for Alzheimer's disease. Curr Alzheimer Res 2013; 10:180-90. [PMID: 22746213 DOI: 10.2174/1567205011310020008] [Citation(s) in RCA: 24] [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] [Received: 12/07/2011] [Revised: 05/21/2012] [Accepted: 05/22/2012] [Indexed: 11/22/2022]
Abstract
Mild cognitive impairment (MCI) is considered a nosological entity or a translational state between normal aging and sporadic Alzheimer's disease (AD). From brain tissue to peripheral blood samples, it is evident that the early markers of metabolic dysfunction observed in AD have also been found in MCI subjects. These observations obtained from MCI and AD subjects leave open the possibility that mitochondrial dysfunction-induced oxidative damage happening a priori of symptom onset, may trigger other pathological hallmarks, namely Aβ oligomerization. In this study, we used a citoplasmic hybrid (cybrid) model created by the repopulation of human teratocarcinoma (NT2) cells depleted of endogenous mitochondrial DNA (mtDNA) with platelets from age-matched controls, MCI and AD subjects. We found mitochondrial deficits in MCI and AD cybrids as compared with controls, such as a decrease in cytochrome c oxidase (COX) activity, a decrease in mitochondrial membrane potential and in mitochondrial cytochrome c content. Consequently, we analyzed parameters of oxidative damage and found that AD and MCI cybrids exhibit an increase in lipid peroxides, higher production of superoxide radicals, and higher content in protein carbonyls. Since our data clearly show alterations in mitochondrial-mediated oxidative damage in MCI cybrids we propose that mitochondrial dysfunction is an early event in idiopathic AD. Moreover, we found that mitochondrial Aβ oligomeric content increases in AD, which may exacerbate initial mitochondrial damage. Altogether, our data strongly supports a key role for mitochondria/ mtDNA in aged-driven AD pathology.
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Affiliation(s)
- D F Silva
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
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9
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Motta MCS, Villa TCS, Golub J, Kritski AL, Ruffino-Netto A, Silva DF, Harter RG, Scatena LM. Access to tuberculosis diagnosis in Itaboraí City, Rio de Janeiro, Brazil: the patient's point of view. Int J Tuberc Lung Dis 2009; 13:1137-1141. [PMID: 19723404 PMCID: PMC3697920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
SETTING Itaboraí Municipality in Rio de Janeiro, Brazil. OBJECTIVE To evaluate access to tuberculosis (TB) diagnosis for users of the Family Health Program (FHP) and Reference Ambulatory Units (RAUs). DESIGN A cross-sectional study was conducted in Itaboraí City, Rio de Janeiro, Brazil. Between July and October 2007, a sample of 100 TB patients registered consecutively with the TB Control Program was interviewed using the primary care assessment tool. The two highest scores, describing 'almost always' and 'always', or 'good' and 'very good', were used as a cut-off point to define high quality access to diagnosis. RESULTS FHP patients were older and had less education than RAU interviewees. Sex and overcrowding did not differ in the two groups. Patient groups did not differ with regard to the number of times care was sought at a unit, transport problems, cost of attending units and availability of consultation within 24 h. Adequate access to diagnosis was identified by 62% of the FHP patients and 53% of the RAU patients (P = 0.01). CONCLUSION In Itaboraí, Rio de Janeiro, TB patients believe that the FHP units provide greater access to TB diagnosis than RAUs. These findings will be used by the Department of Health to improve access to diagnosis in Itaboraí.
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Affiliation(s)
- M C S Motta
- Anna Nery School of Nursing, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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10
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Silva DF, Porto DL, Araújo IGA, Dias KLG, Cavalcante KVM, Veras RC, Tavares JF, Correia NA, Guedes DN, Silva MS, Medeiros IA. Endothelium-derived nitric oxide is involved in the hypotensive and vasorelaxant effects induced by discretamine in rats. Pharmazie 2009; 64:327-331. [PMID: 19530444] [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: 05/27/2023]
Abstract
The aim of this study was to investigate the pharmacological effects of discretamine, an isoquinoline alkaloid isolated from Duguetia magnolioidea Maas, on the cardiovascular system, using a combined in vivo and in vitro approach. Blood pressure and heart rate measurements, as well as changes in isometric tension in rat superior mesenteric arterial rings, elicited by discretamine were recorded. In normotensive non-anaesthetized rats (n = 6), discretamine (0.01; 0.05; 0.1; 0.5; 1, 5 and 10 mg/kg i.v., randomly) injections produced hypotension (-5.2 +/- 1.7; -5.1 +/- 2.1; -7.7 +/- 2; -8.9 +/- 1.7; -9.6 +/- 2.2; -16.8 +/- 2.8 and -13.4 +/- 1.3 mmHg, respectively) accompanied by tachycardia (24.2 +/- 6.1; 36.8 +/- 11.3; 44.2 +/- 7.7; 45.9 +/- 6.4; 48.2 +/- 9.1; 72.1 +/- 14.5 and 64 +/- 17 bpm, respectively). Hypotensive and tachycardic responses were significantly attenuated after L-NAME (20 mg/kg, i.v.) administration. In isolated rat mesenteric artery rings, with endothelium intact, discretamine (10(-12) - 10(-5) M) induced concentration-dependent relaxation of the contractions induced by phenylephrine (10 microM) [pD2 = 6.8 +/- 0.1]. The effect of the discretamine on phenylephrine induced contractions was significantly attenuated after removal of the vascular endothelium [pD2 = 5.8 +/- 0.04]. Similar results were obtained after pre-treatment with L-NAME 100 microM [pD2 = 5.8 +/- 0.04], L-NAME 300 microM [pD2 = 5.9 +/- 0.06], Hydroxocobalamin 30 microM [pD2 = 5.8 +/- 0.06] or ODQ 10 microM [pD2 = 5.8 +/- 0.04]. In addition, in rabbit aorta endothelial cell line, discretamine significantly increased NO3- levels. These results suggest that the hypotensive effect induced by discretamine is probably due to a peripheral vasodilatation, at least, in part, due to the release of NO from vascular endothelium and consequent activation of soluble guanylyl cyclase (GC) in the vascular smooth muscle cells.
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Affiliation(s)
- D F Silva
- Laboratório de Tecnologia Farmacêutica, Universidade Federal da Paraíba, João Pessoa-PB, Brazil
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11
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Abstract
The vasorelaxing activity of rotundifolone (ROT), a major constituent (63.5%) of the essential oil of Mentha x villosa, was tested in male Wistar rats (300-350 g). In isolated rat aortic rings, increasing ROT concentrations (0.3, 1, 10, 100, 300, and 500 microg/ml) inhibited the contractile effects of 1 microM phenylephrine and of 80 or 30 mM KCl (IC50 values, reported as means +/- SEM = 184 +/- 6, 185 +/- 3 and 188 +/- 19 microg/ml, N = 6, respectively). In aortic rings pre-contracted with 1 microM phenylephrine, the smooth muscle-relaxant activity of ROT was inhibited by removal of the vascular endothelium (IC50 value = 235 +/- 7 microg/ml, N = 6). Furthermore, ROT inhibited (pD2 = 6.04, N = 6) the CaCl2-induced contraction in depolarizing medium in a concentration-dependent manner. In Ca2+-free solution, ROT inhibited 1 microM phenylephrine-induced contraction in a concentration-dependent manner and did not modify the phasic contractile response evoked by caffeine (20 mM). In conclusion, in the present study we have shown that ROT produces an endothelium-independent vasorelaxing effect in the rat aorta. The results further indicated that in the rat aorta ROT is able to induce vasorelaxation, at least in part, by inhibiting both: a) voltage-dependent Ca2 channels, and b) intracellular Ca2+ release selectively due to inositol 1,4,5-triphosphate activation. Additional studies are required to elucidate the mechanisms underlying ROT-induced relaxation.
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Affiliation(s)
- D N Guedes
- Laboratório de Tecnologia Farmacêutica, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
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12
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Guedes DN, Silva DF, Barbosa-Filho JM, de Medeiros IA. Endothelium-dependent hypotensive and vasorelaxant effects of the essential oil from aerial parts of Mentha x villosa in rats. Phytomedicine 2004; 11:490-497. [PMID: 15500259 DOI: 10.1016/j.phymed.2004.04.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cardiovascular effects of an essential oil from the aerial parts of Mentha x villosa (OEMV) were tested in rats using a combined in vivo and in vitro approach. In non-anesthetized normotensive rats, OEMV (1, 5, 10, 20, 30 mg kg(-1) body wt., i.v.) induced a significant and dose-dependent hypotension (-3 +/- 1.8%; -6 +/- 0.7%; -40 +/- 6.7%; -58 +/- 3.8%; -57 +/- 2.1%, respectively) associated with decreases in heart rate (-1 +/- 0.3%; -9 +/- 0.9%; -17 +/- 3.2%; -72 +/- 3.1%; -82 +/- 1.4%, respectively). The hypotensive and bradycardic responses evoked by OEMV were attenuated and blocke by pre-treatment of the animals with atropine (2 mg kg(-1) body wt., i.v.). In isolated rat atrial preparations, OEMV (10, 100, 300, 500 microg ml(-1)) produced concentration-related negative chronotropic and inotropic effects (IC50 value = 229 +/- 17 and 120 +/- 13 microg ml(-1), respectively). In isolated rat aortic rings, increasing concentrations of OEM (10, 100, 300, 500 microg ml(-1)) were able to antagonize the effects of phenylephrine (1 microM), prostaglandin F2alpha (10 microM) and KCl (80 mM)-induced contractions (IC50 value = 255 +/- 9, 174 +/- 4 and 165 +/- 14 microg ml(-1), respectively). The vasorelaxant activity induced by OEMV was attenuated significantly by either endothelium removal (IC50 value = 304 +/- 9 microg ml(-1)), NG-nitro L-arginine methyl ester (L-NAME) 100 microM (IC50 value=359 +/- 18 microg ml(-1)), L-NAME 300 microM (IC50 value = 488 +/- 20 microg ml(-1)) or indomethacin 10 microM (IC50 value = 334 +/- 18 microg ml(-1)). However, it was not affected by atropine 1 microM (IC50 value = 247 +/- 12 microg ml(-1)). Furthermore, the hypotensive response induced by OEMV was attenuated significantly after nitric oxide (NO) synthase blockade (L-NAME, 20 mg kg(-1) body wt., i.v.), while bradycardia was not altered. The results suggest that the hypotensive effect induced by OEMV is probably due to its direct cardiodepressant action and peripheral vasodilation, which can be attributed to both endothelium-dependent (via EDRFs, at least NO and prostacyclin) and endothelium-independent mechanisms (such as Ca2+ channel blockade).
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Affiliation(s)
- D Nunes Guedes
- Laboratório de Tecnologia Farmacêutica, Universidade Federal da Paraiba, Caixa Postal 5009, 58.051-970 João Pessoa, PB, Brazil
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13
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Guedes DN, Silva DF, Barbosa-Filho JM, Medeiros IA. Muscarinic agonist properties involved in the hypotensive and vasorelaxant responses of rotundifolone in rats. Planta Med 2002; 68:700-704. [PMID: 12221591 DOI: 10.1055/s-2002-33795] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The acute cardiovascular effects of rotundifolone (ROT), the major constituent (63.5 %) of the essential oil of Mentha x villosa (OEMV), were tested in rats by using a combined (in vivo and in vitro) approach. ROT (1, 5, 10, 20 and 30 mg kg(-1) i. v.) induced a significant and dose-dependent hypotension and bradycardia in non-anaesthetized normotensive rats. The hypotensive effect was significantly attenuated by pre-treatment of the rats with atropine (2 mg kg(-1) i. v.) or L-NAME (20 mg kg(-1) i. v.). Furthermore, the bradycardic effect was abolished by atropine. In isolated rat atrial preparations, ROT (10, 100, 300 and 500 microg ml(-1)) produced concentration-related negative inotropic and chronotropic effects. In isolated intact aortic rings, increasing concentractions of ROT (0.3, 1, 10, 100, 300 and 500 microg ml(-1)) were able to antagonize the contractile effect of phenylephrine (1 microM) (IC50 = 184 +/- 6 microg ml(-1)). The smooth muscle-relaxant activity of ROT was inhibited by either removal of vascular endothelium, atropine (1 microM), L-NAME (100 and 300 microM) or indomethacin (10 microM) (IC50 values = 235 +/- 7, 247 +/- 8, 387 +/- 21, 723 +/- 75 and 573 +/- 38 microg ml(-1), respectively). These results suggest that rotundifolone markedly lowers arterial pressure and heart rate in non-anaesthetized animals. The hypotensive action of rotundifolone can be a consequence of a decrease in heart rate and peripheral vascular resistance, probably due to a non-selective muscarinic receptor stimulation.
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Affiliation(s)
- D N Guedes
- Laboratório de Tecnologia Farmacêutica, Universidade Federal da Paraíba, João Pessoa, PB, Brazil
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14
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Kilsztajn S, Silva CR, Silva DF, Michelin A, Carvalho AR, Ferraz IL. [Mortality rate associated to traffic accidents and registered motor vehicles]. Rev Saude Publica 2001; 35:262-8. [PMID: 11486149 DOI: 10.1590/s0034-89102001000300008] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE The mortality rate due to traffic accidents is an information often used while making public health policies. In order to measure traffic violence, a study was carried to analyze the number of death by traffic accidents per registered motor vehicle. METHODS Based on the number of registered vehicles, population and traffic accident deaths, obtained from the Statistical Yearbook (1999), Demographic Yearbook (1997), Denatran (1999), Ministério da Saúde (2000) and Fundação IBGE (2000) 61 countries and 51 areas in Brazil were studied. Traffic accident mortality rate was broken down into registered motor vehicles per capita and the number of deaths per motor vehicle. To assess this relationship, the samples (international and Brazilian) were subdivided into three groups according to the number of vehicles per capita. To test the statistical significance of this relationship, log-linear regression was used. RESULTS The number of deaths per motor vehicles is associated to the number of registered motor vehicles per capita. The statistical relationship is -1.067 for international data and -0.515 for the Brazilian data. CONCLUSIONS To prevent traffic accidents, there is a need of further studies to explain the high numbers of deaths due to motor vehicles associated with the low rate of registered motor vehicles per capita.
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Affiliation(s)
- S Kilsztajn
- Laboratório de Economia Social, Programa de Estudos Pós-Graduados em Economia Política, Pontifícia Universidade Católica de São Paulo, São Paulo, SP, Brasil.
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15
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de Albuquerque CM, Melo-Santos MA, Bezerra MA, Barbosa RM, Silva DF, da Silva E. [First report of Aedes albopictus in areas of Mata Atlantica, Recife, PE, Brazil]. Rev Saude Publica 2000; 34:314-5. [PMID: 10920457 DOI: 10.1590/s0034-89102000000300017] [Citation(s) in RCA: 19] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
This is the first report of the presence of Aedes albopictus in the native rain forest, near the urban area of Recife (State of Pernambuco, Brazil). Adult female mosquitoes were collected using human bait. Mosquitoes in aquatic stages were looked for in treeholes, bamboos, bromeliads and old tires. The existence of Ae. albopictus in the metropolitan area of Recife poses a potential risk for the interaction of this mosquito species with the urban human population.
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Affiliation(s)
- C M de Albuquerque
- Departamento de Zoologia do Centro de Ciências Biológicas da Universidade Federal de Pernambuco. Recife, PE, Brasil.
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16
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Djabraian AA, Batista MS, de Lima MM, Silva DF. Continuous spike-waves during slow waves sleep. A clinical and electroencephalographic study in fifteen children. Arq Neuropsiquiatr 1999; 57:566-70. [PMID: 10667278 DOI: 10.1590/s0004-282x1999000400005] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report on the clinical and EEG features of 15 patients with the syndrome of "continuous spike waves during slow wave sleep" (CSWSS). The differential diagnosis of CSWSS includes benign epilepsy of childhood with centro-temporal spikes, and Landau-Kleffner and Lennox-Gastaut syndromes. We found normal CT and MRI features in 6 cases, periventricular leukomalacia with and without diffuse brain atrophy in 4 cases and hydrocephalus in 1 case. There was no association between specific neurological findings and CSWSS. Nine of our cases had relatively focal discharges, like some cases from the literature. The occurrence of CSWSS appears to be age-related, generally between the ages of 5 to 12 years, with a strong temporal relation to the neuropsychological deterioration in its nature, severity and prognosis. We believe that this striking disorder has been overlooked and that routine sleep EEG studies on epileptic children may disclose additional cases of CSWSS.
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Affiliation(s)
- A A Djabraian
- Federal University of São Paulo (UNIFESP)/Paulista School of Medicine, Brasil
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17
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Abstract
Wicket spikes (WS) are a benign electroencephalogram (EEG) variant, seen mainly in adults, during somnolence, in the temporal regions, in many clinical situations. WS can appear in trains or isolatedly, sometimes being difficult to differentiate from epileptiform activity. We reviewed 2,000 EEG's, found 65 with WS (3.25%) and compared them with 65 normal EEG without WS. There was statistically significant (SS) association between WS and age over 33; adolescent age was correlated to absence of WS and age over 65, to the presence of WS; there was an inverse correlation between WS and epilepsy, related to differences in age; a SS association with cerebrovascular disorders disappeared after controlling for age; a SS correlation with headache was also related to age; female predominance was not SS. There was a great variety of clinical situation associated with WS. We conclude that WS are a inespecific normal variant of the EEG that is age-related.
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Affiliation(s)
- M S Batista
- Hospital São Paulo/Escola Paulista de Medicina (EPM)/Universidade Federal de São Paulo (UNIFESP), Brasil
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18
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Batista MS, Silva DF, Ferraz HB, de Andrade LA. Complex partial seizures and aphasia as initial manifestations of non-ketotic hyperglycemia. Case report. Arq Neuropsiquiatr 1998; 56:296-9. [PMID: 9698744 DOI: 10.1590/s0004-282x1998000200022] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
We describe a case of non-ketotic hyperglycemia (NKH), heralded by complex partial seizures and aphasia of epileptic origin, besides versive and partial motor seizures. This clinical picture was accompanied by left fronto-temporal spikes in the EEG. The seizures were controlled by carbamazepine only after the control of the diabetes. A month later, carbamazepine was discontinued. The patient remained without seizures, with normal language, using only glybenclamide. Complex partial seizures, opposed to simple partial seizures, are rarely described in association to NKH. Epileptic activity localized over language regions can manifest as aphasia.
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Affiliation(s)
- M S Batista
- Escola Paulista de Medicina (EPM)/Universidade Federal de São Paulo (UNIFESP), Brasil
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Abstract
The agenesis and lipoma of the corpus callosum is a very rare association. We report the case of a 18-years old woman with rare epileptic seizures since the age of 6 years, normal neurological examination, as well as normal electroencephalogram. The brain computed tomography scanning and the magnetic resonance showed the lipoma and the agenesis of the corpus callosum.
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Affiliation(s)
- D F Silva
- Escola Paulista de Medicina (EPM), São Paulo, Brasil
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20
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Silva DF, Lima MM, Anghinah R, Zanoteli E, Lima JG. Dipole reversal: an ictal feature in a patient with benign partial epilepsy of childhood with centro-temporal spike. Arq Neuropsiquiatr 1995; 53:270-3. [PMID: 7487536 DOI: 10.1590/s0004-282x1995000200015] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We describe the case of a 15-year-old boy who had the diagnosis of benign partial epilepsy of childhood with centro-temporal spike. During the EEG a subclinical electrographic seizure was recorded. The discharges were clearly electropositive in T4 with positive phase reversal between derivations F8-T4 and T4-T6. The whole episode lasted less than one minute (45 sec). The interictal right medio-temporal spikes reemerged after 60 sec and were electronegative in the same location after the end of the electrographic seizures. The mechanisms underlying this uncommon pattern on EEG is not well established.
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Affiliation(s)
- D F Silva
- Disciplina de Neurologia, Setor de Eletrencefalografia, Escola Paulista de Medicina, São Paulo, Brasil
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21
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Silva DF, Zanoteli E, Lima MM, Anghinah R, Lima JG. Complex partial status epilepticus in a child. Arq Neuropsiquiatr 1995; 53:274-7. [PMID: 7487537 DOI: 10.1590/s0004-282x1995000200016] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Complex partial status epilepticus (SE) has been reported rarely in children. We describe the clinical case of a 14 year-old girl with complex partial seizures (CPS) since age 10 who developed a complex partial SE probably because she was not adherent to treatment. The neurologic examination and computed tomography scan were normal. During the SE she received diazepam and phenytoin and became free of the seizures after 5 minutes. The ictal EEG showed spikes and slow waves over the right temporal region.
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Affiliation(s)
- D F Silva
- Disciplina de Neurologia, Setor de Eletrencefalografia, Escola Paulista de Medicina, São Paulo, Brasil
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Abstract
The subclinical rhythmic electrographic discharge in adults (SREDA) has been rarely reported. We describe the case of a 71 year-old man with transient ischemic attack, whose EEG showed an atypical evolution of this uncommon pattern. The computed tomography scan and cerebrospinal fluid were normal. We are not aware of any other report in the literature with this atypical evolution of SREDA.
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Affiliation(s)
- D F Silva
- Disciplina de Neurologia, Setor de Eletrencefalografia, Escola Paulista de Medicina, São Paulo, Brasil
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Silva DF, Lima MM, Kanda PM, Anghinah R, Zanoteli E, Lima JG. Atypical pattern related to 14 Hz positive spikes. Arq Neuropsiquiatr 1995; 53:262-5. [PMID: 7487534 DOI: 10.1590/s0004-282x1995000200013] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We studied two children with a history of headache and a normal physical and neurological examination whose EEG showed an electroencephalographic pattern recently published, the N-shape potential associated with the 14 Hz positive spikes. This graphoelement was observed only during the asleep state.
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Affiliation(s)
- D F Silva
- Disciplina de Neurologia, Setor de Eletrencefalografia, Escola Paulista de Medicina, São Paulo, Brasil
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Silva DF, Lima MM, González LV, Lopez OJ, Anghinah R, Zanoteli E, Lima JG. Epilepsy with continuous spike-waves during slow wave sleep: a clinical and electroencephalographic study. Arq Neuropsiquiatr 1995; 53:252-7. [PMID: 7487532 DOI: 10.1590/s0004-282x1995000200011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We report four children with epilepsy with "continuous spike-waves during slow wave sleep" (CSWSS). The main clinical features were partial motor seizures, mental retardation and motor deficit. The EEG findings were characterized by nearly continuous (> 85%) diffuse slow spike and wave activity in two patients, and localized to one hemisphere in two other cases during non-REM sleep. The treatment was effective in improving the clinical seizures, but not the EEG pattern. We believe that this epileptic syndrome has been overlooked and routine sleep EEG studies on epileptic children may disclose more cases of CSWSS.
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Affiliation(s)
- D F Silva
- Setor de Eletrencefalografia, Disciplina de Neurologia, Escola Paulista de Medicina, São Paulo, Brasil
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Abstract
We studied four children with diagnosis of absence seizures (generalized primary epilepsy), and with a generalized delta activity on the EEG during clinical attacks provoked by hyperventilation. The lack of ictal generalized spike-and-wave discharges with a frequency of 3 Hz in our patients, makes this an atypical pattern. All children had complete control of their seizures and disappearance of the EEG changes with valproate. We concluded that generalized delta activity observed on EEG during the hyperventilation in children should not always be considered as a normal finding for age, since it could be an ictal event of an absence seizure.
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Affiliation(s)
- D F Silva
- Setor de Eletrencefalografia, Disciplina de Neurologia Clínica, Escola Paulista de Medicina, São Paulo, Brasil
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26
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Silva DF, Lima MM, Anghinah R, Zanoteli E, Lima JG. Atypical clinical and electroencephalographic pattern in a patient with subacute sclerosing panencephalitis. Arq Neuropsiquiatr 1995; 53:278-80. [PMID: 7487538 DOI: 10.1590/s0004-282x1995000200017] [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] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
We describe an atypical clinical and electroencephalographic (EEG) pattern observed during the course of subacute sclerosing panencephalitis in a 14 year-old boy. In this patient with a two weeks history of partial complex seizures, the atypical EEG pattern was characterized by an initial left temporal focus which evolved to periodic lateralized epileptiform discharges (PLEDs) and, only during the 3rd and 4th weeks the typical bilateral and generalized periodic complexes appeared.
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Affiliation(s)
- D F Silva
- Disciplina de Neurologia, Setor de Eletrencefalografia, Escola Paulista de Medicina, São Paulo, Brasil
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27
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Abstract
The relationship between dreams and epilepsy is illustrated by two patients whose awake epileptic seizures and recurrent dreams during night sleep had similar content. In both of our cases the EEG showed right anterior temporal spike discharge, suggesting a role for the temporal lobe in the association between dreams and seizures.
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Affiliation(s)
- D O Reami
- Departamento de Neurologia, Escola Paulista de Medicina, São Paulo, Brasil
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Cavalheiro EA, Silva DF, Turski WA, Calderazzo-Filho LS, Bortolotto ZA, Turski L. The susceptibility of rats to pilocarpine-induced seizures is age-dependent. Brain Res 1987; 465:43-58. [PMID: 3440212 DOI: 10.1016/0165-3806(87)90227-6] [Citation(s) in RCA: 233] [Impact Index Per Article: 6.3] [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: 01/05/2023]
Abstract
Behavioral, electroencephalographic and morphological changes induced by systemic administration of pilocarpine hydrochloride were studied in 3-90-day-old rats. Pilocarpine, 100, 200 and 380 mg/kg, presented a characteristic array of behavioral patterns in developing rats. Hyper- or hypoactivity, tremor, loss of postural control, scratching, head bobbing and myoclonic movements of the limbs dominated the behavior in 3-9-day-old rats. No overt motor seizures were observed in this age group. More intense behavioral signs evolving in some animals to limbic seizures and status epilepticus occurred when pilocarpine was administered in 12-day-old-rats. The electrographic activity in these animals progressed from low voltage spiking registered concurrently in the hippocampus and cortex during the first week of life into localized epileptic activity in the hippocampus, which spread to cortical recordings during the second week of life. No morphological alterations were detected in the brains of 3-12-day-old rats subjected to the action of pilocarpine, 100-380 mg/kg. The adult pattern of behavioral and electroencephalographic sequelae after pilocarpine was encountered in 15-21-day-old rats. Akinesia, tremor and head bobbing progressed in 15-21-day-old rats given pilocarpine, 100-380 mg/kg, to motor limbic seizures and status epilepticus. The lethal toxicity of pilocarpine reached 50% during the third week of life. This increased susceptibility to the convulsant action of pilocarpine was characterized by a shortened latency for behavioral and electrographic signs, and an increased severity of seizures relative to older and younger rats. In 15-21-day-old rats subjected to pilocarpine-induced convulsions high voltage fast activity superposed over hippocampal theta-rhythm, progressed into high voltage spiking and spread to cortical records. The electrographic activity became well synchronized and then developed into seizures and status epilepticus. Morphological analysis of frontal forebrain sections in 15-21-day-old rats which underwent status epilepticus after pilocarpine revealed no damage or an attenuated pattern of damage. In 15-21-day-old rats which presented epilepsy-related brain damage, morphological breakdown was seen in the hippocampus, amygdala, olfactory cortex, neocortex and certain thalamic nuclei. No damage was detected in the substantia nigra and lateral thalamic nucleus. An adult pattern of the damage to the brain, in terms of extent and topography, was present in 4-5-week-old rats.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- E A Cavalheiro
- Departamento de Neurologia e Neurocirurgia, Escola Paulista de Medicina, Sao Paulo, Brazil
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