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Lima AS, Luz ACON, Carvalho AM, Mourani MM, Catto LFB, Gutierrez-Rodrigues F, Young NS, Souza CS, Oliveira FR, Calado RT. SÍNDROME VEXAS E A RELAÇÃO DE DISTÚRBIOS AUTOINFLAMATÓRIOS COM DOENÇAS HEMATOLÓGICAS. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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2
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Baronio GJ, Souza CS, Silva NNA, Moura NP, Leite AV, Santos AMM, Maciel MIS, Castro CC. Different visitation frequencies of native and non-native bees to vines: how much vegetation is necessary to improve fruit production? Plant Biol (Stuttg) 2021; 23:923-930. [PMID: 34532942 DOI: 10.1111/plb.13327] [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] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
Pollination is provided by biodiversity and maintains global food production. We investigated the effects of vegetation cover on the abundance of floral visitor and vine (Vitis labrusca Raf.) production. We expected an increase in both floral visitor frequencies and vineyard yields with an increase in native vegetation cover in the landscape. We also investigated different scenarios of visitor abundance with and without honeybees (Apis mellifera L.). We surveyed floral visitors from ten vineyard plots with different native cover surrounding them and related both visitors and native vegetation to fruit set. Considering some of these vineyards, we compared physical and chemical traits of berries to understand how they vary according to native vegetation. Floral visitor abundance was positively related to native vegetation cover. However, considering only native bee abundance, we found a dual (hyperbolic) response. Apis mellifera (L.) Africanized was the most abundant species and had the highest number of interactions; however, when removed from the network analysis, the relationship between vineyards and native bees became more specialized. The fruit size and mass of berries differed among vineyards, as did some chemical traits related to commercial quality of fruits, such as soluble solids, pH and flavonoids. Vineyards surrounded by intermediate areas of native vegetation present a balance between resource availability from vineyards and native vegetation. Apis and non-Apis (such as flies and small bees) floral visitors, known to have different effects on vine pollination, could hypothetically provide variation in vine production and quality. Considering a near 20% native vegetation increment, there was an enhancement, on average, of ten-fold more berries per bunch, the changing physical and chemical fruit traits by vegetation increment could also increase the aggregate value of vines and the value of pollination services in the economy.
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Affiliation(s)
- G J Baronio
- Departamento de Ecologia, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo, SP, Brazil
- Programa de Pós-Graduação em Ciência Florestal, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, MG, Brazil
| | - C S Souza
- Programa de Pós-Graduaçao em Botânica Aplicada, Universidade Estadual de Montes Claros, Montes Claros, MG, Brazil
| | - N N A Silva
- Programa de Pós-Graduação em Biodiversidade, Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - N P Moura
- Programa de Pós-Graduação em Ciência e Tecnologia de Alimentos, Departamento de Ciências do Consumo, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - A V Leite
- Programa de Pós-Graduação em Biodiversidade, Departamento de Biologia, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - A M M Santos
- Centro Acadêmico de Vitória, Universidade Federal de Pernambuco, Vitória de Santo Antão, Pernambuco, Brazil
| | - M I S Maciel
- Programa de Pós-Graduação em Ciência e Tecnologia de Alimentos, Departamento de Ciências do Consumo, Universidade Federal Rural de Pernambuco, Recife, PE, Brazil
| | - C C Castro
- Universidade Federal do Agreste de Pernambuco, Garanhuns, Pernambuco, Brazil
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Teixeira LR, Chahud F, Simão JCL, Souza CS, Motta ACF. Cutaneous and oral manifestations of pseudoxanthoma elasticum: clinicopathological features of an uncommon disorder. Clin Exp Dermatol 2021; 46:745-748. [PMID: 33378100 DOI: 10.1111/ced.14549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/28/2020] [Accepted: 12/26/2020] [Indexed: 11/30/2022]
Affiliation(s)
- L R Teixeira
- Department of Pathology and Forensic Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - F Chahud
- Department of Pathology and Forensic Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - J C L Simão
- Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - C S Souza
- Department of Internal Medicine, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - A C F Motta
- Department of Stomatology, Public Health and Forensic Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo, Ribeirão Preto, Brazil
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de Matos AM, Blázquez-Sánchez MT, Bento-Oliveira A, de Almeida RFM, Nunes R, Lopes PEM, Machuqueiro M, Cristóvão JS, Gomes CM, Souza CS, El Idrissi IG, Colabufo NA, Diniz A, Marcelo F, Oliveira MC, López Ó, Fernandez-Bolaños JG, Dätwyler P, Ernst B, Ning K, Garwood C, Chen B, Rauter AP. Glucosylpolyphenols as Inhibitors of Aβ-Induced Fyn Kinase Activation and Tau Phosphorylation: Synthesis, Membrane Permeability, and Exploratory Target Assessment within the Scope of Type 2 Diabetes and Alzheimer's Disease. J Med Chem 2020; 63:11663-11690. [PMID: 32959649 DOI: 10.1021/acs.jmedchem.0c00841] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Despite the rapidly increasing number of patients suffering from type 2 diabetes, Alzheimer's disease, and diabetes-induced dementia, there are no disease-modifying therapies that are able to prevent or block disease progress. In this work, we investigate the potential of nature-inspired glucosylpolyphenols against relevant targets, including islet amyloid polypeptide, glucosidases, and cholinesterases. Moreover, with the premise of Fyn kinase as a paradigm-shifting target in Alzheimer's drug discovery, we explore glucosylpolyphenols as blockers of Aβ-induced Fyn kinase activation while looking into downstream effects leading to Tau hyperphosphorylation. Several compounds inhibit Aβ-induced Fyn kinase activation and decrease pTau levels at 10 μM concentration, particularly the per-O-methylated glucosylacetophloroglucinol and the 4-glucosylcatechol dibenzoate, the latter inhibiting also butyrylcholinesterase and β-glucosidase. Both compounds are nontoxic with ideal pharmacokinetic properties for further development. This work ultimately highlights the multitarget nature, fine structural tuning capacity, and valuable therapeutic significance of glucosylpolyphenols in the context of these metabolic and neurodegenerative disorders.
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Affiliation(s)
- Ana M de Matos
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - M Teresa Blázquez-Sánchez
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Andreia Bento-Oliveira
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Rodrigo F M de Almeida
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Rafael Nunes
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal.,Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Pedro E M Lopes
- Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Miguel Machuqueiro
- Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Joana S Cristóvão
- Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Cláudio M Gomes
- Biosystems & Integrative Sciences Institute, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
| | - Cleide S Souza
- Department of Chemistry, The University of Sheffield, Dainton Building, Brook Hill, Sheffield S3 7HF, United Kingdom
| | - Imane G El Idrissi
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro", Via Orabona, 4, 70125 Bari, Italy
| | - Nicola A Colabufo
- Dipartimento di Farmacia-Scienze del Farmaco, Università degli Studi di Bari "A. Moro", Via Orabona, 4, 70125 Bari, Italy
| | - Ana Diniz
- UCIBIO, REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica 2829-516, Portugal
| | - Filipa Marcelo
- UCIBIO, REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa, Caparica 2829-516, Portugal
| | - M Conceição Oliveira
- Mass Spectrometry Facility at CQE, Insituto Superior Técnico, Av. Rovisco Pais, Lisboa 1049-001, Portugal
| | - Óscar López
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, Sevilla E-41071, Spain
| | - José G Fernandez-Bolaños
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Apartado 1203, Sevilla E-41071, Spain
| | - Philipp Dätwyler
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, Basel CH-4056, Switzerland
| | - Beat Ernst
- Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, Basel CH-4056, Switzerland
| | - Ke Ning
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, The University of Sheffield, Sheffield S10 2HQ, United Kingdom
| | - Claire Garwood
- Department of Neuroscience, Sheffield Institute for Translational Neuroscience, The University of Sheffield, Sheffield S10 2HQ, United Kingdom
| | - Beining Chen
- Department of Chemistry, The University of Sheffield, Dainton Building, Brook Hill, Sheffield S3 7HF, United Kingdom
| | - Amélia P Rauter
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, Lisboa 1749-016, Portugal
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de Araújo FM, Ferreira RS, Souza CS, Dos Santos CC, Rodrigues TLRS, E Silva JHC, Gasparotto J, Gelain DP, El-Bachá RS, D Costa MDF, Fonseca JCM, Segura-Aguilar J, Costa SL, Silva VDA. Aminochrome decreases NGF, GDNF and induces neuroinflammation in organotypic midbrain slice cultures. Neurotoxicology 2018; 66:98-106. [PMID: 29588162 DOI: 10.1016/j.neuro.2018.03.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 10/30/2017] [Revised: 03/13/2018] [Accepted: 03/21/2018] [Indexed: 01/19/2023]
Abstract
Recent evidence shows that aminochrome induces glial activation related to neuroinflammation. This dopamine derived molecule induces formation and stabilization of alpha-synuclein oligomers, mitochondria dysfunction, oxidative stress, dysfunction of proteasomal and lysosomal systems, endoplasmic reticulum stress and disruption of the microtubule network, but until now there has been no evidence of effects on production of cytokines and neurotrophic factors, that are mechanisms involved in neuronal loss in Parkinson's disease (PD). This study examines the potential role of aminochrome on the regulation of NGF, GDNF, TNF-α and IL-1β production and microglial activation in organotypic midbrain slice cultures from P8 - P9 Wistar rats. We demonstrated aminochrome (25 μM, for 24 h) induced reduction of GFAP expression, reduction of NGF and GDNF mRNA levels, morphological changes in Iba1+ cells, and increase of both TNF-α, IL-1β mRNA and protein levels. Moreover, aminochrome (25 μM, for 48 h) induced morphological changes in the edge of slices and reduction of TH expression. These results demonstrate neuroinflammation, as well as negative regulation of neurotrophic factors (GDNF and NGF), may be involved in aminochrome-induced neurodegeneration, and they contribute to a better understanding of PD pathogenesis.
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Affiliation(s)
- Fillipe M de Araújo
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil.
| | - Rafael S Ferreira
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Cleide S Souza
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Cleonice Creusa Dos Santos
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Tácio L R S Rodrigues
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Juliana Helena C E Silva
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Juciano Gasparotto
- Centro de estudos em Estresse oxidativo, Departamento de Bioquimica, PPG Bioquimica, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Daniel Pens Gelain
- Centro de estudos em Estresse oxidativo, Departamento de Bioquimica, PPG Bioquimica, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Ramon S El-Bachá
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Maria de Fátima D Costa
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - José Claudio M Fonseca
- Centro de estudos em Estresse oxidativo, Departamento de Bioquimica, PPG Bioquimica, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil
| | - Juan Segura-Aguilar
- Molecular & Clinical Pharmacology, ICBM, Faculty of Medicine, University of Chile, Santiago, Chile
| | - Silvia L Costa
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
| | - Victor Diogenes A Silva
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Bioquímica e Biofísica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Bahia, Brazil
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Ferreira BHS, Gomes AC, Souza CS, Fabri JR, Sigrist MR. Pollination and reproductive system of synchronopatric species of Cactaceae (Cactoideae) subject to interspecific flow of pollen: an example of ecological adaptation in the Brazilian Chaco. Plant Biol (Stuttg) 2018; 20:101-112. [PMID: 28977737 DOI: 10.1111/plb.12641] [Citation(s) in RCA: 3] [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: 04/28/2017] [Accepted: 09/26/2017] [Indexed: 06/07/2023]
Abstract
Three synchronopatric Cactaceae species, Echinopsis rhodotricha, Harrisia balansae and Praecereus saxicola, have mostly nocturnal anthesis and similar flowers, characteristics that motivated us to perform a comparative study of reproductive ecology. Reproductive phenology was sampled monthly from December 2014 to November 2015. We describe floral biology, breeding system via pollination treatments and evaluate floral visitors from focal and filming observations. Pollen grains found on moth proboscis were compared among cactus species under light microscopy. We used fluorescent dye particles to test intra- and interspecific pollen flow. These three species have extended flowering with greater intensity in the wet season, causing high overlap. They have white and hypocrateriformis flowers that open at twilight or nightfall and last about 15 h. H. balansae seems to be self-incompatible, while E. rhodotricha presented self-compatibility. P. saxicola presented self-fertility, but most of the population seems to be self-incompatible. We suggest sphingophily for the three species, but only P. saxicola was visited by Manduca rustica (Sphingidae). However, we observed pollen grains of all three species on the proboscis of moths, especially M. rustica and M. sexta. Prolonged anthesis allowed bees (herein considered as secondary pollinators) to visit flowers of E. rhodotricha and P. saxicola. It can be concluded that the studied species share nocturnal and diurnal pollinators, suggesting interspecific pollen flow, which, however, could not be detected with fluorescent dye particles. In view of the low frequency of primary pollinators, it appears that these three species have different reproductive strategies, ensuring the fruiting and production of viable seeds.
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Affiliation(s)
- B H S Ferreira
- Programa de Pós Graduação em Biologia Vegetal, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil
| | - A C Gomes
- Programa de Pós Graduação em Biologia Vegetal, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil
| | - C S Souza
- Programa de Pós Graduação em Ecologia e Conservação, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil
| | - J R Fabri
- Laboratório de Botânica, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil
| | - M R Sigrist
- Laboratório de Polinização, Reprodução e Fenologia de Plantas, Instituto de Biociências, Universidade Federal de Mato Grosso do Sul, Campo Grande, MS, Brasil
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Santos CC, Araújo FM, Ferreira RS, Silva VB, Silva JH, Grangeiro MS, Soares ÉN, Pereira ÉPL, Souza CS, Costa SL, Segura-Aguilar J, Silva VDA. Aminochrome induces microglia and astrocyte activation. Toxicol In Vitro 2017; 42:54-60. [DOI: 10.1016/j.tiv.2017.04.004] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 04/04/2017] [Accepted: 04/05/2017] [Indexed: 11/16/2022]
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Andrade BS, Souza CS, Santos G, Góes-Neto A. Virtual screening reveals a viral-like polymerase inhibitor that complexes with the DNA polymerase of Moniliophthora perniciosa. Genet Mol Res 2016; 15:gmr8190. [PMID: 27323084 DOI: 10.4238/gmr.15028190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The filamentous fungus Moniliophthora perniciosa is a basidiomycota that causes the witches' broom disease in cocoa trees (Theobroma cacao L.). The mitochondrial DNA polymerase of M. perniciosa (MpmitDNApol) is classified within the B family of DNA polymerases, which can be found in viruses and cellular organelles. Using virtual screening processes, accessing KEGG, PubChem, and ZINC databases, we selected the 27 best putative nucleoside viral-like polymerase inhibitors to test against MpmitDNApol. We used Autodock Vina to perform docking simulations of the selected molecules and to return energy values in several ligand conformations. Then, we used Pymol v1.7.4.4 to check the stereochemistry of chiral carbons, hydrogen bonding receptors, absence or presence of hydrogen, sub and superstructure, numbers of rings, rotatable bonds, and donor groups. We selected the Entecavir Hydrate, a drug used to control hepatitis B; subsequently AMBER 14 was used to describe the behavior of polymerase-entecavir complex after setting up 3500 ps of simulation in water at a temperature of 300 K. From the simulation, a graph of Potential Energy was generated revealing that the ligand remains in the catalytic site after 3500 ps with a final energy of -612,587.4214 kcal/mol.
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Affiliation(s)
- B S Andrade
- Departamento de Biologia, Universidade Estadual do Sudoeste da Bahia, Jequié, BA, Brasil.,Programa de Pós-Graduação em Biotecnologia, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Novo Horizonte, Feira de Santana, BA, Brasil
| | - C S Souza
- Laboratório de Modelagem Molecular, Departamento de Saúde, Universidade Estadual de Feira de Santana, Novo Horizonte, Feira de Santana, BA, Brasil.,Programa de Pós-Graduação em Biotecnologia, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Novo Horizonte, Feira de Santana, BA, Brasil
| | - G Santos
- Departamento de Biologia, Universidade Estadual do Sudoeste da Bahia, Jequié, BA, Brasil
| | - A Góes-Neto
- Programa de Pós-Graduação em Biotecnologia, Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Novo Horizonte, Feira de Santana, BA, Brasil
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Souza CS, Paulsen BS, Devalle S, Lima Costa S, Borges HL, Rehen SK. Commitment of human pluripotent stem cells to a neural lineage is induced by the pro-estrogenic flavonoid apigenin. ACTA ACUST UNITED AC 2015. [DOI: 10.3402/arb.v2.29244] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Silva VDA, Pitanga BPS, Nascimento RP, Souza CS, Coelho PLC, Menezes-Filho N, Silva AMM, Costa MDFD, El-Bachá RS, Velozo ES, Costa SL. Juliprosopine and juliprosine from prosopis juliflora leaves induce mitochondrial damage and cytoplasmic vacuolation on cocultured glial cells and neurons. Chem Res Toxicol 2013; 26:1810-20. [PMID: 23923817 DOI: 10.1021/tx4001573] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Prosopis juliflora is a shrub largely used for animal and human consumption. However, ingestion has been shown to induce intoxication in animals, which is characterized by neuromuscular alterations induced by mechanisms that are not yet well understood. In this study, we investigated the cytotoxicity of a total alkaloid extract (TAE) and one alkaloid fraction (F32) obtained from P. juliflora leaves to rat cortical neurons and glial cells. Nuclear magnetic resonance characterization of F32 showed that this fraction is composed of a mixture of two piperidine alkaloids, juliprosopine (majority constituent) and juliprosine. TAE and F32 at concentrations between 0.3 and 45 μg/mL were tested for 24 h on neuron/glial cell primary cocultures. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide test revealed that TAE and F32 were cytotoxic to cocultures, and their IC50 values were 31.07 and 7.362 μg/mL, respectively. Exposure to a subtoxic concentration of TAE or F32 (0.3-3 μg/mL) induced vacuolation and disruption of the astrocyte monolayer and neurite network, ultrastructural changes, characterized by formation of double-membrane vacuoles, and mitochondrial damage, associated with changes in β-tubulin III and glial fibrillary acidic protein expression. Microglial proliferation was also observed in cultures exposed to TAE or F32, with increasing levels of OX-42-positive cells. Considering that F32 was more cytotoxic than TAE and that F32 reproduced in vitro the main morphologic and ultrastructural changes of "cara torta" disease, we can also suggest that piperidine alkaloids juliprosopine and juliprosine are primarily responsible for the neurotoxic damage observed in animals after they have consumed the plant.
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Affiliation(s)
- Victor Diogenes A Silva
- Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia , Salvador, Brazil
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do Val ADB, Souza CS, Ferreira EA, Salgado SML, Pasqual M, Cançado GMA. Evaluation of genetic diversity in fig accessions by using microsatellite markers. Genet Mol Res 2013; 12:1383-91. [PMID: 23661461 DOI: 10.4238/2013.april.25.9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Fig (Ficus carica L.) is a fruit of great importance worldwide. Its propagation is carried out with stem cuttings, a procedure that favors the occurrence of synonymy among specimens. Thus, molecular markers have become an important tool for studies of DNA fingerprinting, germplasm characterization, and genetic diversity evaluation in this plant species. The aim of this study was the analysis of genetic diversity among accessions of fig and the detection of synonyms among samples using molecular markers. Five microsatellite markers previously reported as polymorphic to fig were used to characterize 11 fig cultivars maintained in the germplasm bank located in Lavras, Minas Gerais. A total of 21 polymorphic DNA fragments were amplified, with an average of 4.2 alleles per locus. The average allelic diversity and polymorphic information content were 0.6300 and 0.5644, respectively, whereas the total value for the probability of identity was 1.45 x 10(-4). The study allowed the identification of 10 genotypes and 2 synonymous individuals. The principal coordinate analysis showed no defined clusters despite the formation of groups according to geographical origin. However, neighbor-joining analysis identified the same case of synonymy detected using principal coordinate analysis. The data also indicated that the fig cultivars analyzed constitute a population of individuals with high genetic diversity and a broad range of genetic variation.
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Affiliation(s)
- A D B do Val
- Laboratório de Biotecnologia Vegetal, Empresa de Pesquisa Agropecuária de Minas Gerais, Caldas, MG, Brasil
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Paulsen BS, Souza CS, Chicaybam L, Bonamino MH, Bahia M, Costa SL, Borges HL, Rehen SK. Agathisflavone Enhances Retinoic Acid-Induced Neurogenesis and Its Receptors α and β in Pluripotent Stem Cells. Stem Cells Dev 2011; 20:1711-21. [DOI: 10.1089/scd.2010.0446] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Affiliation(s)
- Bruna S. Paulsen
- Instituto de Ciências Biomédicas, Laboratório Nacional de Células-Tronco Embrionárias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Cleide S. Souza
- Instituto de Ciências Biomédicas, Laboratório Nacional de Células-Tronco Embrionárias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Leonardo Chicaybam
- Divisão de Medicina Experimental, Instituto Nacional do Câncer, Rio de Janeiro, Brazil
| | | | - Marcus Bahia
- Universidade Federal do Recôncavo da Bahia, Recôncavo, Brazil
| | - Silvia Lima Costa
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | - Helena L. Borges
- Instituto de Ciências Biomédicas, Laboratório Nacional de Células-Tronco Embrionárias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Stevens K. Rehen
- Instituto de Ciências Biomédicas, Laboratório Nacional de Células-Tronco Embrionárias, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
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Pitanga BPS, Silva VDA, Souza CS, Junqueira HA, Fragomeni BON, Nascimento RP, Silva AR, Costa MDFD, El-Bachá RS, Costa SL. Assessment of neurotoxicity of monocrotaline, an alkaloid extracted from Crotalaria retusa in astrocyte/neuron co-culture system. Neurotoxicology 2011; 32:776-84. [PMID: 21781985 DOI: 10.1016/j.neuro.2011.07.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2010] [Revised: 06/09/2011] [Accepted: 07/04/2011] [Indexed: 10/18/2022]
Abstract
Studies have shown cases of poisoning with plants from the genus Crotalaria (Leguminosae) mainly in animals. They induce damages in the central nervous system (CNS), which has been attributed to toxic effects of the pyrrolizidine alkaloid (PA) monocrotaline (MCT). Previously we demonstrated that both MCT and dehydromonocrotaline (DHMC), its main active metabolite, induce changes in the levels and patterns of expression of the main protein from astrocyte cytoskeleton, glial fibrillary acidic protein (GFAP). In this study we investigated the effect of MCT on rat cortical astrocyte/neuron primary co-cultures. Primary cultures were exposed to 10 or 100 μM MCT. The MTT test and the measurement of LDH activity on the culture medium revealed that after 24h exposure MCT was not cytotoxic to neuron/astrocyte cells. However, the cell viability after 72 h treatment decreased in 10-20%, and the LDH levels in the culture medium increased at a rate of 12% and 23%, in cultures exposed to 10 or 100 μM MCT. Rosenfeld staining showed vacuolization and increase in cell body in astrocytes after MCT exposure. Immunocytochemistry and Western blot analyses revealed changes on pattern of GFAP and βIII-tubulin expression and steady state levels after MCT treatment, with a dose and time dependent intense down regulation and depolarization of neuronal βIII-tubulin. Moreover, treatment with 100 μM MCT for 12h induced GSH depletion, which was not seen when cytochrome P450 enzyme system was inhibited indicating that it is involved in MCT induced cytotoxicity in CNS cells.
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Affiliation(s)
- Bruno P S Pitanga
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Biofunção/Bioquímica, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Av. Reitor Miguel Calmon s/n, Salvador, BA, 40.110-902, Brazil
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14
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Souza CS, Felicio LBA, Ferreira J, Kurachi C, Bentley MVB, Tedesco AC, Bagnato VS. Long-term follow-up of topical 5-aminolaevulinic acid photodynamic therapy diode laser single session for non-melanoma skin cancer. Photodiagnosis Photodyn Ther 2009. [PMID: 19932453 DOI: 10.1016/j.pdpdt.2009.09.001p] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Photodynamic therapy (PDT) is based on the association of a light source and light sensitive agents in order to cause the selective death of tumor cells. To evaluate topical 5-aminolaevulinic acid (5-ALA) and diode laser photodynamic single session therapy single session for non-melanoma skin cancer (NMSC), a long-term follow-up was performed. Nineteen Bowen's disease (BD) and 15 basal cell carcinoma (BCC) lesions were submitted to 6-h topical and occlusive 20% 5-ALA plus DMSO and EDTA, and later were exposed to 630 nm diode laser, 100 or 300 J cm(-2) dose. At 3 months tumor-free rate was 91.2% (31/34) whereas at 60 months, 57.7% (15/26), slightly higher in BCC (63.6%; 7/11). The relation between the reduction of the clinical response and the increase of tumor dimension observed at 18 months was lost at 60 months. The sBCC recurrence was earlier compared to the nBCC one. ALA-PDT offered important advantages: it is minimally invasive, an option for patients under risk of surgical complications; clinical feasibility; treatment of multiple lesions in only one session or lesions in poor healing sites and superior esthetical results. However, the recurrence rate increase after ALA-PDT diode laser single session can be observed at long-term follow-up, and the repetitive sessions, an additional advantage of the method, is strongly recommended. The clinical response and recurrence time seem to be related to the laser light dose and NMSC types/sub-types, thickness and dimension, which must be considered for the choice of the ALA-PDT.
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Affiliation(s)
- C S Souza
- Division of Dermatology, Internal Medicine, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil.
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15
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Arruda SLM, Miranda PC, Araújo TPF, Souza CS, Damasco FS, Achcar Á, Figueiredo EC, Branisso H, Albuquerque DLL. Clinical and epidemiological features of a series of 73 cases of pulmonary embolism admitted to an ICU. Crit Care 2009. [PMCID: PMC4085446 DOI: 10.1186/cc7848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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16
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Souza CS, Felício LBA, Arruda D, Ferreira J, Kurachi C, Bagnato VS. Systemic photodynamic therapy as an option for keratoacanthoma centrifugum marginatum treatment. J Eur Acad Dermatol Venereol 2009; 23:101-2. [DOI: 10.1111/j.1468-3083.2008.02744.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Arruda SLM, Miranda PC, Araújo TPF, Teixeira KO, Souza CS, Veizaga RG, Souza GA, Costa JNL. Unstable angina and non-ST-segment elevation myocardial infarction: an analysis by TIMI score. Crit Care 2009. [PMCID: PMC4085436 DOI: 10.1186/cc7838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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18
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Silva AR, Pinheiro AM, Souza CS, Freitas SRVB, Vasconcellos V, Freire SM, Velozo ES, Tardy M, El-Bachá RS, Costa MFD, Costa SL. The flavonoid rutin induces astrocyte and microglia activation and regulates TNF-alpha and NO release in primary glial cell cultures. Cell Biol Toxicol 2007; 24:75-86. [PMID: 17549591 DOI: 10.1007/s10565-007-9017-y] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2006] [Accepted: 04/18/2007] [Indexed: 10/23/2022]
Abstract
Astrocyte and microglia cells play an important role in the central nervous system (CNS). They react to various external aggressions by becoming reactive and releasing neurotrophic and/or neurotoxic factors. Rutin is a flavonoid found in many plants and has been shown to have some biological activities, but its direct effects on cells of the CNS have not been well studied. To investigate its potential effects on CNS glial cells, we used both astrocyte primary cultures and astrocyte/microglia mixed primary cell cultures derived from newborn rat cortical brain. The cultures were treated for 24 h with rutin (50 or 100 micromol/L) or vehicle (0.5% dimethyl sulfoxide). Mitochondrial function on glial cells was not evidenced by the MTT test. However, an increased lactate dehydrogenase activity was detected in the culture medium of both culture systems when treated with 100 micromol/L rutin, suggesting loss of cell membrane integrity. Astrocytes exposed to 50 micromol/L rutin became reactive as revealed by glial fibrillary acidic protein (GFAP) overexpression and showed a star-like phenotype revealed by Rosenfeld's staining. The number of activated microglia expressing OX-42 increased in the presence of rutin. A significant increase of nitric oxide (NO) was observed only in mixed cultures exposed to 100 micromol/L rutin. Enhanced TNFalpha release was observed in astrocyte primary cultures treated with 100 micromol/L rutin and in mixed primary cultures treated with 50 and 100 micromol/L, suggesting different sensitivity of both activated cell types. These results demonstrated that rutin affects astrocytes and microglial cells in culture and has the capacity to induce NO and TNFalpha production in these cells. Hence, the impact of these effects on neurons in vitro and in vivo needs to be studied.
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Affiliation(s)
- A R Silva
- Departamento de Biofunção, Laboratório de Neuroquímica e Biologia Celular, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, Brazil
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19
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Nascimento AG, Tótola MR, Souza CS, Borges MT, Borges AC. Temporal and spatial dynamics of blocking and ripening effects on bacterial transport through a porous system: A possible explanation for CFT deviation. Colloids Surf B Biointerfaces 2006; 53:241-4. [PMID: 17085023 DOI: 10.1016/j.colsurfb.2006.08.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2006] [Revised: 08/26/2006] [Accepted: 08/28/2006] [Indexed: 11/21/2022]
Abstract
The studies on transport of particles across porous systems are based on the Colloid Filtration Theory (CFT). According to CFT, the collision efficiency is constant along the system length [J.N. Ryan, M. Elimelech, Colloids Surf. A: Physicochem. Eng. Aspects 107 (1996) 1-56]. Decreasing values of collision efficiency have been reported, a phenomenon that has been interpreted as a deviation from the CFT [X. Li, T.D. Scheibe, W.P. Johnson, Environ. Sci. Technol. 38 (2004) 5616-5625; N. Tufenkji, J.A. Redman, M. Elimelech, Environ. Sci. Technol. 37 (2003) 616-623; N. Tufenkji, M. Elimelech, Langmuir 20 (2004) 10818-10828; N. Tufenkji, M. Elimelech, Langmuir 21 (2005) 841-852]. This paper presents data on transport of Bacillus megaterium spores through quartz sand columns. The occurrence of consecutive phases of increase and decrease of the values of C/C(0), the effluent spore concentration expressed as a fraction of the influent spore concentration, is reported. These patterns of change in C/C(0) were interpreted as the result of the concomitant occurrence of blocking and ripening, the prevalence of these phenomena in different moments of the experiment, and the spatial distribution of the prevalence of blocking and ripening effects along the porous system. It is argued that this spatial distribution in the predominance of blocking and ripening, what leads to the intensification of ripening at the entrance of the porous system, might be a possible explanation for the reported deviation from the CFT for experimental conditions where ripening and blocking take place.
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Abstract
AIMS The aim of this study was to obtain improved strains of pectinolytic yeasts adapted to the conditions of an industrial fermentation process, which was continuously operated to convert citrus molasses into ethanol. METHODS AND RESULTS The starter yeast of the industrial fermentation process was a commercial baker's yeast, which was capable of growing without forming any secretion halo of pectinase activity on solid medium. Nevertheless, isolates showing secretion of pectinolytic activity on plates were obtained from the fermentation process. The secretion of pectin-degrading activity by isolates on plates was repressed by galactose and improved as the result of colony aging on polygalacturonic acid plates at 30 degrees C. Liquefaction of polygalacturonate gels as well as the splitting of the pectin-degrading activity into a wall-linked and a supernatant fraction were also observed when the starter yeast was propagated under agitation in liquid medium containing pectin. CONCLUSIONS Isolates capable of secreting pectinolytic activity on plates were predominant at the end of the citrus molasses fermentation. Nevertheless, the sizes of the secretion haloes on plates were not necessarily an indication of the levels of pectinolytic activity secreted in the liquid medium. SIGNIFICANCE AND IMPACT OF THE STUDY Improved pectinolytic strains of Saccharomyces can be used as a source of pectinases for a variety of applications. This organism also participates in plant deterioration processes.
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Affiliation(s)
- K F Oliveira
- Curso de Pós-Graduação Interunidades em Biotecnologia-USP/I. Butantan/IPT, ICB, USP, São Paulo, Brazil
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21
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Silva AMM, Silva AR, Pinheiro AM, Freitas SRVB, Silva VDA, Souza CS, Hughes JB, El-Bachá RS, Costa MFD, Velozo ES, Tardy M, Costa SL. Alkaloids from Prosopis juliflora leaves induce glial activation, cytotoxicity and stimulate NO production. Toxicon 2006; 49:601-14. [PMID: 17241650 DOI: 10.1016/j.toxicon.2006.07.037] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [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: 04/27/2006] [Revised: 07/21/2006] [Accepted: 07/25/2006] [Indexed: 11/19/2022]
Abstract
Prosopis juliflora is used for feeding cattle and humans. Intoxication with the plant has been reported, and is characterized by neuromuscular alterations and gliosis. Total alkaloidal extract (TAE) was obtained using acid/basic-modified extraction and was fractionated. TAE and seven alkaloidal fractions, at concentrations ranging 0.03-30 microg/ml, were tested for 24h on astrocyte primary cultures derived from the cortex of newborn Wistar rats. The MTT test and the measure of LDH activity on the culture medium, revealed that TAE and fractions F29/30, F31/33, F32 and F34/35 were cytotoxic to astrocytes. The EC(50) values for the most toxic compounds, TAE, F31/33 and F32 were 2.87 2.82 and 3.01 microg/ml, respectively. Morphological changes and glial cells activation were investigated through Rosenfeld's staining, by immunocytochemistry for the protein OX-42, specific of activated microglia, by immunocytochemistry and western immunoblot for GFAP, the marker of reactive and mature astrocytes, and by the production of nitric oxide (NO). We observed that astrocytes exposed to 3 microg/ml TAE, F29/30 or F31/33 developed compact cell body with many processes overexpressing GFAP. Treatment with 30 microg/ml TAE and fractions, induced cytotoxicity characterized by a strong cell body contraction, very thin and long processes and condensed chromatin. We also observed that when compared with the control (+/-1.34%), the proportion of OX-42 positive cells was increased in cultures treated with 30 microg/ml TAE or F29/30, F31/33, F32 and F34/35, with values raging from 7.27% to 28.74%. Moreover, incubation with 3 microg/ml F32, 30 microg/ml TAE, F29/30, F31/33 or F34/35 induced accumulation of nitrite in culture medium indicating induction of NO production. Taken together these results show that TAE and fractionated alkaloids from P. juliflora act directly on glial cells, inducing activation and/or cytotoxicity, stimulating NO production, and may have an impact on neuronal damages observed on intoxicated animals.
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Affiliation(s)
- A M M Silva
- Laboratório de Neuroquímica e Biologia Celular, Departamento de Biofunção, Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, BA, 40.110-100, Brazil
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22
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Souza CS, Felício LBA, Bentley MV, Tedesco AC, Ferreira J, Kurachi C, Bagnato VS. Topical photodynamic therapy for Bowen's disease of the digit in epidermolysis bullosa. Br J Dermatol 2005; 153:672-4. [PMID: 16120168 DOI: 10.1111/j.1365-2133.2005.06783.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Turchiello RF, Vena FCB, Maillard P, Souza CS, Bentley MVBL, Tedesco AC. Cubic phase gel as a drug delivery system for topical application of 5-ALA, its ester derivatives and m-THPC in photodynamic therapy (PDT). J Photochem Photobiol B 2003; 70:1-6. [PMID: 12745240 DOI: 10.1016/s1011-1344(03)00022-8] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The ability of the cubic liquid-crystalline phase to incorporate and control the release of drugs of varying size and polar characteristics makes it an interesting candidate as a drug delivery system. In the present study we investigated a new potential application of the cubic phase (monoolein/water; 70:30, w/w) to deliver pro-drugs and a photosensitizer for topical application in photodynamic therapy (PDT). Therefore the pro-drug 5-aminolevulinic acid (5-ALA, a PpIX precursor), its ester derivatives (hexylester, octylester and decylester), and the chlorine compound meso-tetra(hydroxyphenyl)chlorine (m-THPC) were incorporated into the cubic phase gel of monoolein/water and their physicochemical and spectroscopic properties were investigated at 37 degrees C. Drug stability was monitored for short and long periods of time. 5-ALA and its ester derivatives as non-fluorescent probes had their properties studied after chemical reaction leading to a fluorescent derivative. For all the compounds analyzed in this study the spectroscopic properties were clearly defined with potential photodynamic activity in the gel formulation. We are currently evaluating the potential of monoolein/water as a drug delivery system in the treatment of different cutaneous diseases and other PDT applications.
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Affiliation(s)
- R F Turchiello
- Departamento de Qui;mica, FFCLRP, Universidade de São Paulo, Av. dos Bandeirantes, 3900, 14040-901, SP, Ribeirão Preto, Brazil
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Laluce C, Souza CS, Abud CL, Gattas EAL, Walker GM. Continuous ethanol production in a nonconventional five-stage system operating with yeast cell recycling at elevated temperatures. J Ind Microbiol Biotechnol 2002; 29:140-4. [PMID: 12242636 DOI: 10.1038/sj.jim.7000294] [Citation(s) in RCA: 14] [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] [Received: 03/29/2002] [Accepted: 06/19/2002] [Indexed: 11/08/2022]
Abstract
Three ranges of increasing temperatures (35-43, 37-45, 39-47 degrees C) were sequentially applied to a five-stage system continuously operated with cell recycling so that differences of 2 degrees C (between one reactor to the next) and 8 degrees C (between the first reactor at the highest temperature and the fifth at the lowest temperature) were kept among the reactors for each temperature range. The entire system was fed through the first reactor. The lowest values of biomass and viability were obtained for reactor R(3) located in the middle of the system. The highest yield of biomass was obtained in the effluent when the system was operated at 35-43 degrees C. This nonconventional system was set up to simulate the local fluctuations in temperature and nutrient concentrations that occur in different regions of the medium in an industrial bioreactor for fuel ethanol production mainly in tropical climates. Minimized cell death and continuous sugar utilization were observed at temperatures normally considered too high for Saccharomyces cerevisiae fermentations.
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Affiliation(s)
- C Laluce
- Depto. Bioquímica e Tecnologia Química, Instituto de Química da UNESP, Caixa Postal 355, Araraquara, SP 14800-970, Brazil
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25
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Souza CS, Roselino AM, Figueiredo F, Foss NT. Lucio's phenomenon: clinical and therapeutic aspects. Int J Lepr Other Mycobact Dis 2000; 68:417-25. [PMID: 11336069] [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: 02/20/2023]
Abstract
We report four cases of necrotizing reactions of the Lucio's phenomenon type, an entity rarely observed in Brazil despite the high prevalence of leprosy. Clinical, histopathological and therapeutic aspects are described and compared to those reported in the literature for cases classified as diffuse, non-nodular lepromatous leprosy with Lucio's phenomenon.
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Affiliation(s)
- C S Souza
- Division of Dermatology, Department of Internal Medicine, University Hospital, Faculty of Medicine of Ribeirao Preto, University of Sao Paulo, Av. Bandeirantes 3900, 14048-900 Ribeirao Preto, SP, Brazil.
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26
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Abstract
Patients with alcohol-related chronic pancreatitis (ARCP) often have peripheral neuropathy, but no data on the occurrence of autonomic neuropathy (AN) are available for this condition. To assess the autonomic function and the significance of its abnormalities for the prognosis of ARCP, 18 patients with ARCP and associated diabetes mellitus (P-DM group), 10 with ARCP without evidence of diabetes mellitus (P group), 17 patients with insulin-dependent diabetes mellitus (IDDM group), and 18 healthy controls answered a structured questionnaire and underwent three standardized cardiovascular (CV) tests that yielded six different parameters for autonomic nerve function. Patients with at least one symptom plus two abnormal results on CV tests were regarded as having AN. ARCP patients were followed up for 48 months and mortality rates were recorded. The proportions of patients with AN were 66.6% in the P-DM group, 30.0% in the P group, and 29.4% in IDDM patients. Seven of 15 ARCP patients with AN died during follow-up, compared with one of 13 of those without AN (p < 0.037). In conclusion, AN is commonly found in ARCP patients and carries an ominous prognosis.
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Affiliation(s)
- L Rosa-e-Silva
- Departamento de Clínica Médica, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Brazil
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27
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Rodrigues ML, Costa RS, Souza CS, Foss NT, Roselino AM. Nephrotoxicity attributed to meglumine antimoniate (Glucantime) in the treatment of generalized cutaneous leishmaniasis. Rev Inst Med Trop Sao Paulo 1999; 41:33-7. [PMID: 10436668 DOI: 10.1590/s0036-46651999000100007] [Citation(s) in RCA: 32] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Pentavalent antimonials have became of basic importance for the treatment of leishmaniasis. Their most severe side effects have been reported to be increased hepatic enzyme levels and electrocardiographic abnormalities. Nephrotoxicity has been rarely related. OBSERVATIONS We report a case of generalized cutaneous leishmaniasis involving a 50-year old male patient who was submitted to treatment with meglumine antimoniate (Glucantime). He developed acute renal failure (ARF) due to acute tubular necrosis (ATN), followed by death after receiving a total of 53 ampoules of Glucantime. CONCLUSIONS The treatment with Glucantime was responsible by ARF diagnosed in this patient. The previous urine osmolarity and serum creatinine levels were normal and the autopsy showed ATN. It should be pointed out if ARF may also be explained by massive deposits of immunocomplexes by leishmania antibodies and antigens due to the antigenic break by the antimonial compound, since our patient presented countless lesions covering the entire tegument, similar to the Hexheimer phenomenon, but at the autopsy no glomerular alterations were seen.
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Affiliation(s)
- M L Rodrigues
- Division of Dermatology, Faculty of Medicine of Ribeirão Preto, SP, Brazil.
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Abstract
BACKGROUND Leishmaniasis recidiva cutis (LRC) is rare in New World leishmaniasis. Only seven cases have been reported so far. MATERIALS AND METHODS Four cases are reported here. Parasite diagnosis was performed by classical methods of touch preparations, histopathologic sections, and cultures. In addition, the detection of parasite DNA by the polymerase chain reaction (PCR) was performed in all cases. RESULTS Parasites were detected by at least one of the classical methods in all primary lesions; however, only the PCR was positive in the recidivant lesions. DISCUSSION LRC cases most likely represent a reactivation of an initial infection, probably due to the persistence of parasites in scarred tissue. Although lupoid leishmaniasis (LL) has been used as a synonym of LRC, a clear difference between LRC and LL can be defined as LL is the initial clinical presentation while LRC is a recurrent lesion. CONCLUSIONS The results indicate that it is not appropriate to use these two denominations as synonyms. The designation of LRC should be maintained in order to define recidives occurring at the border of an old scar of cutaneous leishmaniasis, avoiding the confusion with the lupoid form of the disease.
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Affiliation(s)
- M P Oliveira-Neto
- Hospital Evandro Chagas, Departamento de Protozoologia, Instituto Oswaldo Cruz (IOC), and FIOCruz, Rio de Janeiro, Brazil
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Mattos M, Caiza A, Fernandes O, Gonçalves AJ, Pirmez C, Souza CS, Oliveira-Neto MP. American cutaneous leishmaniasis associated with HIV infection: report of four cases. J Eur Acad Dermatol Venereol 1998; 10:218-25. [PMID: 9643324] [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: 02/07/2023]
Abstract
OBJECTIVE A report of four cases of American cutaneous leishmaniasis associated with HIV infection is presented. BACKGROUND The association of mucocutaneous leishmaniasis and HIV infection is rare. Only 15 cases have been reported in the literature thus far. SUBJECTS Four new cases are described and the differences between the clinical presentation in immunocompromised and immunocompetent patients are emphasized. CONCLUSIONS Multiple cutaneous lesions plus mucosal involvement characterize the clinical presentation of American cutaneous leishmaniasis in association with HIV infection in the majority of the cases. A serological investigation for HIV infection is recommended for patients presenting with this type of clinical picture, especially if the patient is a young male.
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Affiliation(s)
- M Mattos
- Hospital Evandro Chagas, Instituto Oswaldo Cruz, Fiocruz, Rio de Janeiro, Brazil
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30
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Rosatelli JB, Souza CS, Soares FA, Foss NT, Roselino AM. Generalized cutaneous leishmaniasis in acquired immunodeficiency syndrome. J Eur Acad Dermatol Venereol 1998; 10:229-32. [PMID: 9643326] [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: 02/07/2023]
Abstract
BACKGROUND Leishmaniasis associated with HIV/AIDS has been reported in the last decade. CASE REPORT A case of generalized cutaneous leishmaniasis in a patient with AIDS is described. The case is paradoxical in that the cutaneous lesions resemble anergic leishmaniasis caused by Leishmania (L.) amazonensis and Jorge Lobo's disease, but the positive Montenegro test and the clinical improvement with antimonial are more commonly observed in leishmaniasis caused by L.(V.) braziliensis. COMMENT The immunosuppression due to HIV/AIDS seen in this patient may explain the dissemination of the lesions, but the positive specific response to leishmanial antigen may explain the good response to the antimonial treatment.
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Affiliation(s)
- J B Rosatelli
- Division of Dermatology, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil
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Souza CS, Alberto FL, Foss NT. Disseminated intravascular coagulopathy as an adverse reaction to intermittent rifampin schedule in the treatment of leprosy. Int J Lepr Other Mycobact Dis 1997; 65:366-71. [PMID: 9401490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- C S Souza
- Division of Dermatology, School of Medicine of Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brazil
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Roselino AM, Souza CS, Andrade JM, Tone LG, Soares FA, Llorach-Velludo MA, Foss NT. Dermatomyositis and acquired ichthyosis as paraneoplastic manifestations of ovarian tumor. Int J Dermatol 1997; 36:611-4. [PMID: 9329895 DOI: 10.1111/j.1365-4362.1997.tb01178.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- A M Roselino
- Department of Dermatology, Faculty of Medicine of Ribeirão Preto, University of São Paulo, Brazil
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Lessa I, Cortes E, Menezes G, Lima ME, Santos CM, Jesus AM, Souza CS, Moreira S. [The determination of blood pressure in routine medical practice]. AMB Rev Assoc Med Bras 1984; 30:50-2. [PMID: 6332342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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