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Trovato VW, Souza GGD, Santos SC, Carvalho LGVD, Medeiros ESD, Biazatti RM, Santos CC, Torales EP, Carvalho RL, Santos VC. Arbuscular mycorrhizal fungi, phosphorus and organic residues in Peltophorum dubium (Spreng.) Taub. seedlings. BRAZ J BIOL 2024; 84:e276160. [PMID: 38511773 DOI: 10.1590/1519-6984.276160] [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: 07/01/2023] [Accepted: 02/06/2024] [Indexed: 03/22/2024] Open
Abstract
Studies have underscored a growingdemand for innovative practices in the cultivation of seedlings from forest species, with a notable emphasis on the utilization of organic waste, inoculation with arbuscular mycorrhizal fungi (AMF), and phosphate fertilization. This study aimed to evaluate the impact of organic residues, inoculation with AMF, and phosphorus on the growth and quality of Peltophorum dubium (Spreng.) Taub. seedlings. Two independent experiments were conducted. In Experiment I, treatments included inoculation with various AMF species: control (without inoculation), Clareoideoglomus etunicatum, Rhizophagus heterosporum, Rhizophagus clarum, and MIX (a combination of the three AMF species), all in conjunction with varying doses of phosphorus (0, 60, 120, 180, and 240 mg kg-1 soil). In Experiment II, treatments comprised a control group (without AMF) and inoculation with Glomus clarum, Gigaspora margarita, Gigaspora albida, Clareoideoglomus etunicatum, and MIX (a combination of the four AMF species), each associated with four substrates: S1) soil + coarse sand - SCS, S2) SCS + poultry manure, S3) SCS + cattle manure, and S4) SCS + sheep manure. Peltophorum dubium seedlings exhibited heightened growth with the inoculation of R. heterosporum, R. clarum, and MIX. Positive responses were observed in seedlings when exposed to organic residues, particularly sheep manure, resulting in increased biomass production and enhanced Dickson quality index. The AMF inoculation, specifically with R. heterosporum, R. clarum, and MIX, provided optimal growth conditions for P. dubium seedlings. Remarkably, the utilization of organic residues, notably substrates with chicken manure and cattle manure, exerted substantial positive effects on both growth and quality of P. dubium seedlings.
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Affiliation(s)
- V W Trovato
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - G G de Souza
- Universidade do Estado de Santa Catarina - UDESC, Departamento de Ciência do Solo, Lages, SC, Brasil
| | - S C Santos
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - L G V de Carvalho
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - E S de Medeiros
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - R M Biazatti
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - C C Santos
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - E P Torales
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - R L Carvalho
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - V C Santos
- Instituto Federal de Educação, Ciência e Tecnologia Bahiano, Santa Inês, BA, Brasil
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Souza GG, Santos SC, Santos CC, Dias AS, Silverio JM, Trovato VW, Flauzino DS. Arbuscular mycorrhizal fungi promote the growth of Dipteryx alata Vogel. BRAZ J BIOL 2023; 83:e275172. [PMID: 37909590 DOI: 10.1590/1519-6984.275172] [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: 05/28/2023] [Accepted: 08/10/2023] [Indexed: 11/03/2023] Open
Abstract
The symbiosis between arbuscular mycorrhizal fungi (AMF) and fruit tree plants is a sustainable strategy for producing seedlings. However, information for Dipteryx alata Vogel., a native species, is still scarce. Thus, this study aimed to identify the most promising AMF inoculum for producing D. alata seedlings and their effects on growth. Seedlings were inoculated with Clareoideoglomus etunicatum, Gigaspora albida, Gigaspora margarita, a mixture of these three species, and an uninoculated control. Height, diameter, and chlorophyll index were evaluated at 30, 60, 90, 120, 150, and 180 days after seedling transplanting, while biomass production, quality index, dependence, and mycorrhizal efficiency were evaluated at 180 days. Greater diameter and height values were observed for D. alata seedlings at 180 days and inoculated with G. albida, G. margarita, and the mixture. AMF of the genus Gigaspora positively contributed to biomass production and seedling quality. D. alata seedlings show high mycorrhizal dependence on G. albida and G. margarita inoculum, which had good mycorrhizal efficiency. AMF, especially those of the genus Gigaspora, favor the production of high-quality D. alata seedlings.
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Affiliation(s)
- G G Souza
- Universidade do Estado de Santa Catarina - UDESC, Departamento de Ciência do Solo, Florianópolis, SC, Brasil
| | - S C Santos
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - C C Santos
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - A S Dias
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - J M Silverio
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - V W Trovato
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - D S Flauzino
- Serviço Nacional de Aprendizagem Rural - SENAR, Departamento de Hortifruti, Dourados, MS, Brasil
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Trovato VW, Santos SC, Mar GD, Santos CC, Corrêa NF, Zomerfeld PS, Torales EP. Foliar application of silicon sources and shading levels in Peltophorum dubium (Spreng.) Taub. BRAZ J BIOL 2023; 83:e274475. [PMID: 37729316 DOI: 10.1590/1519-6984.274475] [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: 05/03/2023] [Accepted: 06/27/2023] [Indexed: 09/22/2023] Open
Abstract
Depending on the intensity and ecological successional classification of plants, light availability can become an unfavorable condition for producing high-quality seedlings. We hypothesized that applying silicon sources might contribute to inducing tolerance to different shading levels for Peltophorum dubium (Spreng.) Taub. seedlings. Two independent experiments were developed: I) the application of five doses of silicon oxide (SiO2: 0.0; 1.0; 2.0; 4.0; and 6.0 g L-1); and II) the application of five doses of potassium silicate (K2SiO3: 0.0; 5.0; 10.0; 15.0; and 20.0 mL L-1 of water). Both were associated with three shading levels: 0% (direct sunlight), 30%, and 50%. In experiment I, we observed that seedlings were more responsive to shading levels and had little influence from foliar application of SiO2, with higher growth, biomass, and quality values when grown under direct sunlight (0% shading). In experiment II, the foliar application of 20.0 mL L-1 of K2SiO3 contributed to greater heights under 0% and 30% shading. Meanwhile, under 50% shading, the dose of 5.0 K2SiO3 favored the species' growth. The application of K2SiO3 favored the increase in the dry mass of the aerial part (DMAP). The highest biomass production and seedling quality occurred under 0% and 30% shading. The 50% shaded environment was most unfavorable to the growth and quality of P. dubium seedlings. Even though the seedlings were not very responsive to silicon sources, K2SiO3 provided a greater response than SiO2. High-quality seedling production is favored when the seedlings are grown under direct sunlight (0% shading).
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Affiliation(s)
- V W Trovato
- Universidade Federal da Grande Dourados, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - S C Santos
- Universidade Federal da Grande Dourados, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - G D Mar
- Universidade Federal da Grande Dourados, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - C C Santos
- Universidade Federal da Grande Dourados, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - N F Corrêa
- Universidade Federal de Mato Grosso do Sul, Programa de Pós-graduação em Tecnologias Ambientais, Campo Grande, MS, Brasil
| | - P S Zomerfeld
- Universidade Federal da Grande Dourados, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - E P Torales
- Universidade Federal da Grande Dourados, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
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Bassan DAZ, Santos SC, Davide LMC, Trovato VW, Medeiros ES, Santos CC, Carvalho RP. Genetic diversity of Peltophorum dubium (Spreng.) Taub. progenies from the states of Minas Gerais and Mato Grosso do Sul, Brazil. BRAZ J BIOL 2022; 82:e260760. [PMID: 35830014 DOI: 10.1590/1519-6984.260760] [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] [Received: 02/05/2022] [Accepted: 06/09/2022] [Indexed: 11/21/2022] Open
Abstract
There is little information regarding the genetic diversity of native species aimed at identifying the best viable progenies for in situ and ex situ conservation. Furthermore, there is a lack of future forest improvement programs. We aimed to know the genetic diversity of 64 Peltophorum dubium (Spreng.) Taub. (Fabaceae) progenies. We determined this species' dendrometric characteristics, and when using multivariate techniques and cluster analysis, we verified the differences between the progenies and groups with less heterogeneity. The progeny and provenance test was installed in Dourados (Mato Grosso do Sul - MS), with seeds collected in three MS regions (Vale do Ivinhema, Serra de Maracaju, and Serra da Bodoquena) and in the micro-region of Lavras (Minas Gerais - MG). The experiment was conducted in an alpha lattice 8 x 8 with four repetitions. We found genetic variability among and within P. dubium populations for all height, diameter, circumference at breast height, volume, and basal area characters. We suggest that P. dubium populations have high genetic variability, which indicates possible genetic improvement through best progeny selection. The UPGMA and Tocher methods grouped the progenies into three and nine groups, respectively, in which the most divergent individuals come from MG and the Bonito region in MS. Based on morphological characters, P. dubium progenies identified as 45, 47, 49, 50, 55, and 59 from MG are the most promising, while progenies 6 and 9 were the least promising.
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Affiliation(s)
- D A Z Bassan
- Instituto de Meio Ambiente de Mato Grosso do Sul - IMASUL, Dourados, MS, Brasil
| | - S C Santos
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - L M C Davide
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - V W Trovato
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - E S Medeiros
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Exatas e Tecnologia, Dourados, MS, Brasil
| | - C C Santos
- Universidade Federal da Grande Dourados - UFGD, Faculdade de Ciências Agrárias, Dourados, MS, Brasil
| | - R P Carvalho
- Instituto Federal de Mato Grosso do Sul - IFMS, Departamento de Ciências Agrárias, Ponta Porã, MS, Brasil
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Santos SC, Villela PB, Klein CH, Queiroga D, Oliveira GMM. 6132Trends in mortality from heart failure between 1980 and 2016. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0157] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Heart failure (HF) is a highly prevalent disease with high mortality rates worldwide, representing the final stage of a large set of cardiovascular diseases.
Purpose
To evaluate the trend of mortality rates fromHF, by sex and Brazilian geoeconomic region, between 1980 and 2016.
Methods
Time series analysis of the underlying causes of death from HF between 1980 and 2016. Population and death-related data were obtained from the Information Technology Department of the Brazilian Unified Health System (DATASUS/MS). Annual crude mortality rates per 100,000 inhabitants were calculated. Standardized rates were estimated according to the age structure of the Brazilian population in the year 2000. Mortality rates were evaluated in all federal units (FedUs) that comprise the Braziliangeoeconomicregions (Northern, Northeastern, Southeastern, Southern and West-Central).
Results
In Brazil, of the 35,348,374 deaths recorded between 1980 and 2016, 3.2% had HF as the underlying cause. The crude mortality rates from HF in both sexes showed a similar reduction trend over the period. In men, those rates ranged from 13.77 in 1980 to 6.69 per 100,000 inhabitants in 2016, while in women, those rates ranged from 13.15 in 1980 to 7.27 per 100,000 inhabitants in 2016 (Figure 1). Despite the relative stability in the last decade, the standardized rates (Figure 1 - Std) showed a similar trend, but with lower values at the end of the study period. Of all FedUs, only Maranhão (Northeastern region) showed a mortality rate similar to that observed in 1980 (10.44 per 100,000 inhabitants in 1980 and 10.65 per 100,000 inhabitants in 2016). All the other FedUs showed a reduction over the period. The FedUs of the Southeastern, Southern and West-Central regions had the highest reductions, especially Espírito Santo (Southeastern region), Rio Grande do Sul (Southern region) and the Federal District, which decreased from 38.98, 53.34 and 28.56 in 1980 to 3.43, 8.49 and 4.33 per 100,000 inhabitants in 2016, respectively.
Figure 1
Conclusions
The crude and standardized mortality rates from HF decreased in the last 37 years, probably because of the better control of risk factors and the advances in HF treatment. The most important reductions occurred in the richest regions of the country, which may be related to the improvement of socioeconomic factors.
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Affiliation(s)
- S C Santos
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - P B Villela
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - C H Klein
- Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - D Queiroga
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - G M M Oliveira
- Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
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Santos SC, Sigurjonsson ÓE, Custódio CA, Mano JF. Blood Plasma Derivatives for Tissue Engineering and Regenerative Medicine Therapies. Tissue Eng Part B Rev 2018; 24:454-462. [PMID: 29737237 PMCID: PMC6443031 DOI: 10.1089/ten.teb.2018.0008] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Platelet-rich plasma (PRP) and its derivatives have been investigated and applied in regenerative medicine. The use of PRP as a supplement of cell culture media has consistently shown to potentiate stem cell proliferation, migration, and differentiation. In addition, the clinical utility of PRP is supported by evidence that PRP contains high concentrations of growth factors (GFs) and proteins which contribute to the regenerative process. PRP based therapies are cost effective and also benefit from the accessibility and safety of using the patient's own GFs. In the last years, a great development has been witnessed on PRP based biomaterials, with both structural and functional purposes. In this study we overview the most relevant PRP applications encompassing PRP based materials for tissue engineering and regenerative medicine. This review also summarizes the challenges in the fields of tissue engineering and regenerative medicine and provides a perspective on future directions.
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Affiliation(s)
- SC Santos
- Department of Chemistry, CICECO – Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - Ólafur Eysteinn Sigurjonsson
- 1) The Blood Bank, Landspitali University Hospital, Snorrabraut 60, 101 Reykjavik, Iceland 2) School of Science and Engineering, University of Reykjavik, Menntavegur 1, 101 Reykjavik
| | - Catarina Almeida Custódio
- Department of Chemistry, CICECO – Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
| | - João Filipe Mano
- Department of Chemistry, CICECO – Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
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Rehem BC, Almeida AAF, Figueiredo GSF, Gesteira AS, Santos SC, Corrêa RX, Yamada MM, Valle RR. Differential expression of the lethal gene Luteus-Pa in cacao of the Parinari series. Genet Mol Res 2016; 15:gmr4925. [PMID: 26910005 DOI: 10.4238/gmr.15014925] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The recessive lethal character Luteus-Pa is found in cacao (Theobroma cacao) genotypes of the Parinari series (Pa) and is characterized by expression of leaf chlorosis and seedling death. Several genotypes of the Pa series are bearers of the gene responsible for the expression of the Luteus-Pa character, which can be used as a tool for determining relationships between genotypes of this group. To evaluate this phenomenon, we analyzed the differential expression of genes between mutant seedlings and wild-type hybrid Pa 30 x 169 seedlings, with the aim of elucidating the possible lethal mechanisms of the homozygous recessive character Luteus-Pa. Plant material was harvested from leaves of wild and mutant seedlings at different periods to construct a subtractive library and perform quantitative analysis using real-time PCR. The 649 sequences obtained from the subtractive library had an average length of 500 bp, forming 409 contigs. The probable proteins encoded were grouped into 10 functional categories. Data from ESTs identified genes associated with Rubisco, peroxidases, and other proteins and enzymes related to carbon assimilation, respiration, and photosystem 2. Mutant seedlings were characterized by synthesizing defective PsbO and PsbA proteins, which were overexpressed from 15 to 20 days after seedling emergence.
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Affiliation(s)
- B C Rehem
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brasil
| | - A-A F Almeida
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brasil
| | - G S F Figueiredo
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brasil
| | - A S Gesteira
- Empresa Brasileira de Pesquisa Agropecuária, Cruz das Almas, BA, Brasil
| | - S C Santos
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brasil
| | - R X Corrêa
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Ilhéus, BA, Brasil
| | - M M Yamada
- Centro de Pesquisas do Cacau, Comissão Executiva do Plano da Lavoura Cacaueira, Itabuna, BA, Brasil
| | - R R Valle
- Centro de Pesquisas do Cacau, Comissão Executiva do Plano da Lavoura Cacaueira, Itabuna, BA, Brasil
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Santos VM, Tubino PVA, Santos SC, Medeiros DBS, Damasceno EAM. A 10-year unsuspected lumbar schwannoma: a case report. W INDIAN MED J 2011; 60:232-234. [PMID: 21942136] [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: 05/31/2023]
Abstract
One case of unsuspected schwannoma is reported in a 69-year old man with chronic lumbosacral pain. The tumour had been mistaken for a lumbar lipoma for a decade. The definitive diagnosis was established after surgery based on the characteristic histopathological findings. The purpose of this report is to alert primary care physicians to peripheral sheath nerve tumours, in addition to highlight the role of pain and image features in the suspicion of tumours with long-term evolution.
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Affiliation(s)
- V M Santos
- Catholic University Medical Course, Brasília-DF, Brazil.
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de Paula JA, de Paula JR, Bara MTF, Ferri PH, Santos SC, Soares e Silva LH. Chemical Differences in the Essential Oil ofPimenta pseudocaryophyllus(Gomes) L. R. Landrum Leaves from Brazil. Journal of Essential Oil Research 2010. [DOI: 10.1080/10412905.2010.9700398] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Caribé dos Santos AC, Sena JAL, Santos SC, Dias CV, Pirovani CP, Pungartnik C, Valle RR, Cascardo JCM, Vincentz M. dsRNA-induced gene silencing in Moniliophthora perniciosa, the causal agent of witches' broom disease of cacao. Fungal Genet Biol 2009; 46:825-36. [PMID: 19602443 DOI: 10.1016/j.fgb.2009.06.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Revised: 06/06/2009] [Accepted: 06/29/2009] [Indexed: 10/20/2022]
Abstract
The genome sequence of the hemibiotrophic fungus Moniliophthora perniciosa revealed genes possibly participating in the RNAi machinery. Therefore, studies were performed in order to investigate the efficiency of gene silencing by dsRNA. We showed that the reporter gfp gene stably introduced into the fungus genome can be silenced by transfection of in vitro synthesized gfpdsRNA. In addition, successful dsRNA-induced silencing of endogenous genes coding for hydrophobins and a peroxiredoxin were also achieved. All genes showed a silencing efficiency ranging from 18% to 98% when compared to controls even 28d after dsRNA treatment, suggesting systemic silencing. Reduction of GFP fluorescence, peroxidase activity levels and survival responses to H(2)O(2) were consistent with the reduction of GFP and peroxidase mRNA levels, respectively. dsRNA transformation of M. perniciosa is shown here to efficiently promote genetic knockdown and can thus be used to assess gene function in this pathogen.
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Affiliation(s)
- A C Caribé dos Santos
- Departamento de Ciências Biológicas, Universidade Estadual de Santa Cruz, Rodovia Ilhéus - Itabuna, Km 16, CEP 45662-000 Ilhéus, BA, Brazil
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Felipe MSS, Andrade RV, Petrofeza SS, Maranhão AQ, Torres FAG, Albuquerque P, Arraes FBM, Arruda M, Azevedo MO, Baptista AJ, Bataus LAM, Borges CL, Campos EG, Cruz MR, Daher BS, Dantas A, Ferreira MASV, Ghil GV, Jesuino RSA, Kyaw CM, Leitão L, Martins CR, Moraes LMP, Neves EO, Nicola AM, Alves ES, Parente JA, Pereira M, Poças-Fonseca MJ, Resende R, Ribeiro BM, Saldanha RR, Santos SC, Silva-Pereira I, Silva MAS, Silveira E, Simões IC, Soares RBA, Souza DP, De-Souza MT, Andrade EV, Xavier MAS, Veiga HP, Venancio EJ, Carvalho MJA, Oliveira AG, Inoue MK, Almeida NF, Walter MEMT, Soares CMA, Brígido MM. Transcriptome characterization of the dimorphic and pathogenic fungus Paracoccidioides brasiliensis by EST analysis. Yeast 2003; 20:263-71. [PMID: 12557278 DOI: 10.1002/yea.964] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.2] [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: 11/07/2022] Open
Abstract
Paracoccidioides brasiliensis is a pathogenic fungus that undergoes a temperature-dependent cell morphology change from mycelium (22 degrees C) to yeast (36 degrees C). It is assumed that this morphological transition correlates with the infection of the human host. Our goal was to identify genes expressed in the mycelium (M) and yeast (Y) forms by EST sequencing in order to generate a partial map of the fungus transcriptome. Individual EST sequences were clustered by the CAP3 program and annotated using Blastx similarity analysis and InterPro Scan. Three different databases, GenBank nr, COG (clusters of orthologous groups) and GO (gene ontology) were used for annotation. A total of 3,938 (Y = 1,654 and M = 2,274) ESTs were sequenced and clustered into 597 contigs and 1,563 singlets, making up a total of 2,160 genes, which possibly represent one-quarter of the complete gene repertoire in P. brasiliensis. From this total, 1,040 were successfully annotated and 894 could be classified in 18 functional COG categories as follows: cellular metabolism (44%); information storage and processing (25%); cellular processes-cell division, posttranslational modifications, among others (19%); and genes of unknown functions (12%). Computer analysis enabled us to identify some genes potentially involved in the dimorphic transition and drug resistance. Furthermore, computer subtraction analysis revealed several genes possibly expressed in stage-specific forms of P. brasiliensis. Further analysis of these genes may provide new insights into the pathology and differentiation of P. brasiliensis.
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Affiliation(s)
- M S S Felipe
- Laboratório de Biologia Molecular, Instituto de Ciências Biológicas, Universidade de Brasília, 70910-900 Brasília, DF, Brasil.
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Abstract
Alcoholic extracts of six Brazilian Cerrado medicinal plants were evaluated for their molluscicidal activity against Biomphalaria glabrata, intermediate host of schistosomiasis. Stryphnodendron polyphyllum bark extract, rich in condensed tannins, was the most promising as molluscicide.
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Affiliation(s)
- J C B Bezerra
- Setor de Parasitologia-Instituto de Patologia Tropical e Saúde Pública, GO, Goiânia, Brazil
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Azevedo NR, Campos IF, Ferreira HD, Portes TA, Santos SC, Seraphin JC, Paula JR, Ferri PH. Chemical variability in the essential oil of Hyptis suaveolens. Phytochemistry 2001; 57:733-6. [PMID: 11397441 DOI: 10.1016/s0031-9422(01)00128-5] [Citation(s) in RCA: 25] [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] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The essential oils of Hyptis suaveolens plants collected from 11 localities of the Brazilian Cerrado region were investigated by GC-MS. Sabinene, limonene, biclyclogermacrene, beta-phellandrene and 1,8-cineole were the principal constituents. The results were submitted to principal component and chemometric cluster analysis which allowed three groups of essential oils to be distinguished with respect to the content of p-mentha-2,4(8)-diene, limonene/beta-phellandrene/gamma-terpinene and germacrene D/bicyclogermacrene. In patterns of geographic variation in essential oil composition indicated that the sesquiterpenes are mainly produced in the samples grown at lower latitudes.
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Affiliation(s)
- N R Azevedo
- Laboratório de Bioatividade Molecular, Instituto de Química, Universidade Federal de Goiás, C.P. 131, 74001-970 Goiânia, GO, Brazil
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14
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Santos SC, Monni R, Bouchaert I, Bernard O, Gisselbrecht S, Gouilleux F, Penard-Lacronique V. Involvement of the NF-κB pathway in the transforming properties of the TEL-Jak2 leukemogenic fusion protein. FEBS Lett 2001; 497:148-52. [PMID: 11377430 DOI: 10.1016/s0014-5793(01)02452-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Constitutively active tyrosine kinases are frequently expressed in various types of human leukemias as the result of chromosomal translocations. The TEL-Jak2 fusion oncoprotein possesses transforming properties in both animal and cellular models, that are tightly dependent on Stat5 activation. In the IL-3-independent TEL-Jak2-transformed Ba/F3 cells, activation of the PI-3K/Akt pathway appears essential to cell proliferation. Here we report a sustained activation of NF-kappaB factors in Ba/F3 cells, which inhibition dramatically impairs cell viability, indicating that NF-kappaB signaling exerts a major role in the anti-apoptotic activities of TEL-Jak2 oncoprotein.
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Affiliation(s)
- S C Santos
- Institut Cochin de Génétique Moléculaire (ICGM), INSERM U363, Paris, France
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15
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Santos SC, Lacronique V, Bouchaert I, Monni R, Bernard O, Gisselbrecht S, Gouilleux F. Constitutively active STAT5 variants induce growth and survival of hematopoietic cells through a PI 3-kinase/Akt dependent pathway. Oncogene 2001; 20:2080-90. [PMID: 11360192 DOI: 10.1038/sj.onc.1204308] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2000] [Revised: 01/17/2001] [Accepted: 01/22/2001] [Indexed: 11/09/2022]
Abstract
Signal Transducer and Activator of Transcription (STATs) are important mediators of cytokine and growth factor-induced signal transduction. STAT5A and STAT5B have been shown to play a role in survival and proliferation of hematopoietic cells both in vitro and in vivo and to contribute to the growth and viability of cells transformed by the TEL-JAK2 oncoprotein. In this study, we investigated the molecular mechanisms by which constitutively active STAT5 proteins induce cell proliferation and survival of Ba/F3 cell lines expressing either dominant positive STAT5A or STAT5B variants or TEL-JAK2 or TEL-ABL fusion proteins. Our results showed that active STAT5 constitutively interacted with p85, the regulatory subunit of the PI 3-kinase. A constitutive activity of the PI 3-kinase/Akt pathway was observed in these cells and required for their cell cycle progression. In contrast, while activity of the PI 3-kinase/Akt pathway was required for survival of Ba/F3 cells expressing the constitutively active forms of STAT5A or STAT5B, it was dispensable for cells transformed by TEL-JAK2 or TEL-ABL fusion proteins, suggesting that additional survival pathways take place in these transformed cells.
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Affiliation(s)
- S C Santos
- Institut Cochin de Génétique Moléculaire (ICGM), Institut National de la Santé et de la Recherche Médicale (INSERM U363), Hôpital Cochin, 27 rue du Fbg St Jacques, 75014 Paris, France
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16
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Abstract
From the leaves of Eucalyptus ovata 13 known compounds, four flavonol glycosides and nine tannins, including the trimer gallocatechin-(4alpha-8)-gallocatechin-(4alpha-8)-catechin (1), were isolated. The spectral data of the peracetate derivative of the trimer are reported.
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Affiliation(s)
- S C Santos
- Laboratório de Bioatividade Molecular, Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Caixa Postal 131, CEP 74001-970, Goiânia, Goiás, Brazil.
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Monni R, Santos SC, Mauchauffe M, Berger R, Ghysdael J, Gouilleux F, Gisselbrecht S, Bernard O, Penard-Lacronique V. The TEL-Jak2 oncoprotein induces Socs1 expression and altered cytokine response in Ba/F3 cells. Oncogene 2001; 20:849-58. [PMID: 11314018 DOI: 10.1038/sj.onc.1204201] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [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: 10/03/2000] [Revised: 12/05/2000] [Accepted: 12/19/2000] [Indexed: 01/24/2023]
Abstract
The leukemia-associated TEL-Jak2 fusion protein possesses a constitutive tyrosine kinase activity and transforming properties in hematopoietic cell lines and animal models. In the murine pro-B Ba/F3 cell line, this fusion constitutively activates the Signal Transducer and Activator of Transcription 5 (Stat5) factors and, as a consequence, induces the sustained expression of various Stat5-target genes including the Cytokine Inducible SH2-containing protein (Cis) gene, which codes for a member of the Suppressor of Cytokine Signaling (Socs) protein family. In TEL-Jak2-transformed Ba/F3 cells, we also observed the upregulation of the Socs1 gene, whose product has been reported to negatively regulate the Jak kinase activity. In transient transfection experiments, Socs1 physically interacts with TEL-Jak2 and interferes with the TEL-Jak2-induced phosphorylation and activation of Stat5 factors, probably through the Socs1-induced proteasome-mediated degradation of the fusion protein. Interestingly, TEL-Jak2-expressing Ba/F3 cells were found to be resistant to the anti-proliferative activities of gamma interferon (IFN-gamma) seemingly as a consequence of Socs1 constitutive expression. These results indicate that the Socs1-dependent cytokine feedback loop, although active, is bypassed by the TEL-Jak2 fusion, but may play a role in the leukemogenic process by altering the cytokine responses of the leukemic cells. Our results also suggest that Socs1 plays a role in shutting down the signaling from the normally activated Jak2 kinase by inducing its proteasome-dependent degradation.
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Affiliation(s)
- R Monni
- INSERM U434, Centre d'Etude du Polymorphisme Humain (CEPH), 27 Rue Juliette Dodu, 75010 Paris, France
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18
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Abstract
From the leaves of Eucalyptus consideniana and E. viminalis, known hydrolysable tannins, galloyl esters and ellagitannins, were isolated. Flavonol glycosides were also isolated from the leaves of E. consideniana. The spectral data of the dimeric ellagitannin, oenothein B (1), are reported.
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Affiliation(s)
- S C Santos
- Instituto de Química, Universidade Federal de Goiás, Campus Samambaia, Caixa Postal 131, CEP 74001-970, Goiânia, Goiás, Brazil.
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Costa TR, Fernandes OF, Santos SC, Oliveira CM, Lião LM, Ferri PH, Paula JR, Ferreira HD, Sales BH, Silva M do R. Antifungal activity of volatile constituents of Eugenia dysenterica leaf oil. J Ethnopharmacol 2000; 72:111-7. [PMID: 10967461 DOI: 10.1016/s0378-8741(00)00214-2] [Citation(s) in RCA: 72] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The essential oil from the hydrodistillation of Eugenia dysenterica leaves consisted mainly of beta-caryophyllene and alpha-humulene as the major sesquiterpene, while limonene and alpha-thujene were the major monoterpene hydrocarbons. The main oxygenated mono and sesquiterpene constituents were alpha-terpineol and beta-caryophyllene oxide, respectively. The oil was investigated against eight strains of Candida albicans, 35 strains of Cryptococcus neoformans var. neoformans, and two C. neoformans var. gattii isolated from HIV-infected individuals with candidosis or cryptococcal meningitis using the agar dilution method. Based on the minimal inhibitory concentration (MIC) values, the most significant results were obtained against Cryptococcus strains. It was observed that 22 strains were inhibited at a concentration of 250 microg/ml, whereas four exhibited potent inhibition with MIC values below 125 microg/ml against 10(6) UFC/ml organisms. We found MICs > or = 3.12 microg/ml for 91.6, 50 and 30% of all Cryptococcus strains in relation of amphotericin B, fluconazole and itraconazole, respectively.
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Affiliation(s)
- T R Costa
- Departamento de Microbiologia, Instituto de Patologia Tropical e Saúde Pública, Universidade Federal de Goiás, 74605-050 Goiânia, GO, Brazil
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20
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Abstract
From the aerial parts of the Myrica gale catechin, epicatechin, gallocatechin, epigallocatechin, epigallocatechin-3-O-gallate, gallocatechin-(4 alpha-8)-epicatechin, gallocatechin-(4 alpha-8)-epigallocatechin, and gallocatechin-(4 alpha-8)-gallocatechin-(4 alpha-8)-gallocatechin (1), were isolated. The 1H- and 13C-NMR data of the peracetate derivative of the trimer are reported.
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Affiliation(s)
- S C Santos
- Instituto de Química, Universidade Federal de Goiás, Caixa Postal 131, CEP 74001-970, Goiânia, Goiás, Brazil.
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Dumon S, Santos SC, Debierre-Grockiego F, Gouilleux-Gruart V, Cocault L, Boucheron C, Mollat P, Gisselbrecht S, Gouilleux F. IL-3 dependent regulation of Bcl-xL gene expression by STAT5 in a bone marrow derived cell line. Oncogene 1999; 18:4191-9. [PMID: 10435632 DOI: 10.1038/sj.onc.1202796] [Citation(s) in RCA: 129] [Impact Index Per Article: 5.2] [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: 11/08/2022]
Abstract
Activation of the Jak/STAT pathway by cytokines has been shown to regulate differentiation, proliferation or apoptosis in hematopoeitic cells. Among the Stat proteins, STAT5 is activated by a broad range of cytokines. In order to study the role of STAT5 in hematopoietic cells, we stably expressed a dominant negative form of STAT5 (STAT5A delta749) in the IL-3 dependent bone marrow derived Ba/F3 cell line. Ba/F3 cells expressing STAT5A delta749 were found to be more sensitive to apoptosis than parental or control Ba/F3 cells after IL-3 withdrawal. Analysis of the expression of the cell death regulators, Bcl-2 and Bcl-x, revealed that the level of Bcl-x was lower in Ba/F3 cells expressing STAT5A delta749 than in control cells. IL-3 regulation of Bcl-x expression at protein and mRNA levels was impaired in these cells while that of Bcl-2 expression was unaffected. We further demonstrated that the Bcl-x gene promoter contained a proximal STAT consensus sequence that bound STAT5. Transactivation of a Bcl-x gene promoter reporter construct by STAT5 was observed in Ba/F3 cells. Introduction of a mutation in the STAT binding site abolished this transactivation. These data indicate that Bcl-x is probably a STAT5 target gene. They also support the involvement of STAT5 in hematopoietic cell survival.
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Affiliation(s)
- S Dumon
- Institut Cochin de Génétique Moléculaire, Institut National de la Santé et de la Recherche Médicale (INSERM U363), Hôpital Cochin, Paris, France
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Boucheron C, Dumon S, Santos SC, Moriggl R, Hennighausen L, Gisselbrecht S, Gouilleux F. A single amino acid in the DNA binding regions of STAT5A and STAT5B confers distinct DNA binding specificities. J Biol Chem 1998; 273:33936-41. [PMID: 9852045 DOI: 10.1074/jbc.273.51.33936] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.3] [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: 01/30/2023] Open
Abstract
STAT5A and STAT5B are two highly related transcription factors encoded by two distinct genes. STAT5A and STAT5B are activated by a broad range of cytokines and growth factors. Although they can be differentially activated, the functional difference between these two molecules relative to their structure is not known. Here we demonstrated that STAT5A and STAT5B homodimers have distinct DNA binding preferences. Chimeric STAT5 molecules allowed us to identify a region between amino acid 420 and 545 responsible for the DNA binding specificity. This region is located in the previously characterized DNA binding region of STAT proteins. Sequence comparison between STAT5A and STAT5B from different species showed a difference of 5 amino acids in the region 420-545 between STAT5A and STAT5B. Substitution of these amino acids demonstrated that a glycine residue at position 433 in STAT5B and a glutamic residue at a similar position in STAT5A determined the DNA binding specificity. These data indicate that STAT5A and STAT5B homodimers may have distinct function and probably regulate the expression of common as well as distinct genes.
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Affiliation(s)
- C Boucheron
- Institut Cochin de Génétique Moléculaire (ICGM), INSERM U363, Hôpital Cochin, 27 rue du Fbg St Jacques, 75014 Paris, France
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Taddei CF, Ramos LR, de Moraes JC, Wajngarten M, Libberman A, Santos SC, Savioli F, Dioguardi G, Franken R. [Multicenter study of elderly patients assisted at outpatient cardiology and geriatrics clinics in Brazilian institutions]. Arq Bras Cardiol 1997; 69:327-33. [PMID: 9609000 DOI: 10.1590/s0066-782x1997001100007] [Citation(s) in RCA: 7] [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: 02/07/2023] Open
Abstract
PURPOSE To evaluate epidemiological, clinical and therapeutic aspects of elderly patients with cardiovascular disease in Brazil. METHODS Elderly patients with cardiovascular disease treated in 36 centers of cardiology and geriatrics were investigated through a questionnaire applied to those who had an appointment during the analyzed period. RESULTS 2196 elderly patients ranging from 65 to 96 years of age were analyzed, 60% of which were females. The main risk factors were: sedentarism (74%); high blood pressure (53%), high LDL-cholesterol (33%), high total cholesterol (30%), obesity (30%), low HDL-cholesterol (15%), diabetes (13%) and smoking (6%). A higher prevalence of females existed among those with > or = 3 risk factors. The main reason for the medical appointment was high blood pressure (48%). Stress test and coronariography were requested more often in males. The most common diagnoses were hypertension (67%), and coronary disease (29%). The most often used medications were diuretics (42%). CONCLUSION There was high prevalence of risk factors (93%), mainly in females; sedentarism was the most common risk factor and prevalence increased with age; hypertension was the most common reason for a medical appointment. Diuretics were the most used drugs; congestive heart failure was the main disease associated to hospitalization (31%) and emergencies (10%).
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Affiliation(s)
- C F Taddei
- Instituto Dante Pazzanese de Cardiologia, São Paulo
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Silva JS, Ferrioli-Filho F, Kanesiro MM, Ferreira VF, Santos SC, Pinto CN, Fonseca JL, Mizrahy HE, Gilbert B, Pinto MC. Evaluation of some organic compounds on bloodstream forms of Trypanosoma cruzi. Mem Inst Oswaldo Cruz 1992; 87:345-51. [PMID: 1343643 DOI: 10.1590/s0074-02761992000300003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Accidental transmission of Chagas' disease to man by blood transfusion is a serious problem in Latin-America. This paper describes the testing of several synthetic, semi-synthetic, and natural compounds for their activity against blood trypomastigotes in vitro at 4 degrees C. The compounds embody several types of chemical structures: benzoquinone, naphthoquinone, anthracenequinone, phenanthrenequinone, imidazole, piperazine, quinoline, xanthene, and simple benzenic and naphthalenic derivatives. Some of them are for the first time tested against Trypanosoma cruzi. The toxic effect of these compounds on this parasite was done by two quite distinct sets of experiments. In one set, the compounds were added to infected blood as ethanolic solution. In this situation the most active one was a furan-1,2-naphthoquinone, in the same range as gentian violet, a new fact to be considered in the assessment of structure-activity relationships in this class of compounds. In other set, we tentatively evaluated the biological activity of water insoluble compounds by adding them in a pure form without solvent into infected blood. In this way some appear to be very active and it was postulated that the effectiveness of such compounds must result from interactions between them and specific blood components.
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Affiliation(s)
- J S Silva
- Departamento de Imunologia, Faculdade Medicina, USP, Ribeirão Preto, Brasil
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