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Molecular monitoring by CDKN2A/p16INK4A and RB1 gene methylation in breast cancer CDKN2Ap16INK4A CDKNApINKA CDKN2A p16INK4A CDKN A p INK RB Ap CDKNA pINKA
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Queiroz, Luiz Fernando de

; Silva, Marcelo Soares da Mota e

; Rosman, Fernando Colonna

; Rosas, Siane Lopes Bittencourt

; Souza, Heitor Siffert Pereira de

; Carvalho, Maria da Glória da Costa

Revista da Associação Médica Brasileira

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2024, Volume 70 N. 4 elocation e20231358

Abstract: En | Text: En | PDF: En

SUMMARY OBJECTIVE: This prospective study aimed to provide a comprehensive analysis of the methylation status of two pivotal genes, CDKN2A/p16INK4A (cyclin-dependent kinase inhibitor 2A) and RB1 (retinoblastoma transcriptional corepressor 1), in breast cancer patients. METHODS: Samples were obtained from 15 women diagnosed with breast cancer and who underwent a total mastectomy. DNA was extracted from the tumor, non-tumor tissue, and peripheral blood (circulating cell-free DNA). The methylation pattern of cell-free DNA extracted from blood collected on the day of mastectomy was compared with the methylation pattern of cell-free DNA from blood collected 1 year post-surgery. The methylation analysis was carried out by sodium bisulfite conversion and polymerase chain reaction, followed by electrophoresis. RESULTS: Methylation of CDKN2A/p16INK4A was identified in 13 tumor samples and 12 non-tumor tissue samples. Two patients exhibited CDKN2A/p16INK4A methylation in the cell-free DNA of the first blood collection, while another showed methylation only in the cell-free DNA of the subsequent blood collection. Regarding RB1, 11 tumors and 8 non-tumor tissue samples presented methylation of the gene. CONCLUSION: This study presents a novel approach for monitoring breast cancer patients through the analysis of cell-free DNA methylation. This analysis can detect changes in methylation patterns before any visible sign of cancer appears in breast tissue and could help predict the recurrence of malignant breast tumors. OBJECTIVE genes CDKN2Ap16INK4A CDKNApINKA CDKN2A p16INK4A CDKN A p INK cyclindependent cyclin dependent 2A RB retinoblastoma 1, , 1) METHODS nontumor non circulating cellfree cell free DNA. . DNA) postsurgery. postsurgery post surgery. surgery post-surgery reaction electrophoresis RESULTS collection gene CONCLUSION Ap CDKNA pINKA

https://doi.org/10.1590/1806-9282.20231358

hTERT gene methylation in circulating DNA, tumor, and surrounding tissue in breast cancer: a prospective study DNA tumor cancer
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Queiroz, Luiz Fernando de

; Silva, Marcelo Soares da Mota e

; Souza, Heitor Siffert Pereira de

; Rosas, Siane Lopes Bittencourt

; Carvalho, Maria da Glória da Costa

Sao Paulo Medical Journal

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2024, Volume 142 N. 5 elocation e2023140

Abstract: En | Text: En | PDF: En

ABSTRACT BACKGROUND: The human telomerase reverse transcriptase (hTERT) enzyme, encoded by the hTERT gene, synthesizes protective telomeric sequences on chromosomes and plays a fundamental role in cancer formation. Methylation of the hTERT gene has an upregulatory effect, increasing hTERT enzyme synthesis and allowing continuous tumor cell division. OBJECTIVE: In a group of patients with breast cancer, we aimed to analyze the methylation status of hTERT in the tumor, surrounding tissue, and circulating free deoxyribonucleic acid (cfDNA) of blood collected on the day of mastectomy and then approximately one year later. DESIGN AND SETTING: A prospective study was conducted at a university hospital in Rio de Janeiro, Brazil. METHODS: Samples were collected from 15 women with breast cancer on the day of mastectomy and approximately one year postoperatively. cfDNA was analyzed by sodium bisulfite conversion, followed by polymerase chain reaction, electrophoresis, and silver nitrate staining. RESULTS: Methylation of hTERT was detected in the tumors and surrounding tissues of all 15 patients. Five patients displayed hTERT methylation in the cfDNA from the blood of the first collection. Of the ten patients who returned for the second collection, three showed methylation. Two patients with methylation in the first collection did not display methylation in the second collection. One patient with no methylation in the first collection displayed methylation in the second collection, and one patient had a diminished level of methylation in the second collection. CONCLUSION: Only one-third of patients displayed methylation in their cfDNA, which may be related to the success of chemotherapy. BACKGROUND (hTERT formation effect division OBJECTIVE tissue (cfDNA later SETTING Janeiro Brazil METHODS 1 postoperatively conversion reaction electrophoresis staining RESULTS CONCLUSION onethird third chemotherapy

https://doi.org/10.1590/1516-3180.2023.0140.r1.04032024

Isopod parasites of Pygocentrus piraya (Characiformes: Serrasalmidae) in the lower São Francisco River, Brazil Characiformes (Characiformes Serrasalmidae River
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Alves, André Mota

; Gomes, Marcos Vinícius Teles

; Jacobina, Uedson Pereira

; Brito, Marcelo Fulgêncio Guedes

Nauplius

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2024, Volume 32 elocation e20240530

Abstract: En | Text: En | PDF: En

Abstract Isopods of the suborder Cymothoida include ectoparasite species that cause physical damage and affect the development of the host by feeding on blood and tissues. On fishes, these parasites attach themselves to the skin, fins, gills, and oral cavity using claws on articulated legs. The ability to remain hidden in cavities even after the fish is caught enables isopods to be transported to new areas along with the host, making these parasites potential co-invaders. Understanding the role and environmental impact of parasites is essential, although research on parasitism in the context of biological invasions lags in comparison to general research on such invasions. Previous records indicate only two species of parasitic isopods in the São Francisco River basin. However, the present study reports the first record of two other species (Braga patagonica and Braga nasuta) on Pygocentrus piraya and in the basin itself. This demonstrates a lack of knowledge regarding fish parasites in the region, despite the presence of other parasites. Collaborations with research groups conducting fish sampling in the basin can contribute to expanding knowledge on these parasites and the training of human resources in fish parasitology. The present study provides important information on the presence of unidentified parasitic isopods on fishes in the São Francisco River basin, underscoring the need for further studies and expanding the geographic distribution of these parasites, as well as the host list for these isopods. tissues skin fins gills legs coinvaders. coinvaders co invaders. invaders co-invaders essential However nasuta itself region parasitology

https://doi.org/10.1590/2358-2936e20240530

Insect (Hexapoda) diversity in the oceanic archipelago of Fernando de Noronha, Brazil: updated taxonomic checklist and new records
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Rafael, José Albertino

; Limeira-de-Oliveira, Francisco

; Hutchings, Roger William

; Miranda, Gil Felipe Gonçalves

; Silva Neto, Alberto Moreira da

; Somavilla, Alexandre

; Camargo, Alexssandro

; Asenjo, Angélico

; Pinto, Ângelo Parise

; Bello, Ayr de Moura

; Dalmorra, Camila

; Mello-Patiu, Cátia Antunes de

; Carvalho, Claudio José Barros de

; Takiya, Daniela Maeda

; Parizotto, Daniele Regina

; Marques, Dayse Willkenia Almeida

; Cavalheiro, Denis de Oliveira

; Mendes, Diego Matheus de Mello

; Zeppelini, Douglas

; Carneiro, Eduardo

; Lima, Élison Fabrício Bezerra

; Lima, Estevam Cipriano Araújo de

; Godoi, Fabio Siqueira Pitaluga de

; Pessoa, Felipe Arley Costa

; Vaz-de-Mello, Fernando Zagury

; Sosa-Duque, Francisco José

; Flores, Heloísa Fernandes

; Fernandes, Itanna Oliveira

; Silva-Júnior, José Osvaldo

; Gomes, Lucas Roberto Pereira

; Monné, Marcela Laura

; Castro, Marcelo Cutrim Moreira de

; Silva, Marcelo Peixoto Gomes da

; Couri, Márcia Souto

; Gottschalk, Marco Silva

; Soares, Matheus Mickael Mota

; Monné, Miguel Angel

; Rafael, Miriam Silva

; Casagrande, Mirna Martins

; Mielke, Olaf Hermann Hendrik

; Grossi, Paschoal Coelho

; Pinto, Paula Jéssica Costa

; Bartholomay, Pedro Reck

; Sobral, Rafael

; Heleodoro, Raphael Aquino

; Machado, Renato José Pires

; Corrêa, Robson Crepes

; Hutchings, Rosa Sá Gomes

; Ale-Rocha, Rosaly

; Santos, Sandra Duque dos

; Lima, Sheila Pereira de

; Mahlmann, Thiago

; Silva, Vera Cristina

; Fernandes, Daniell Rodrigo Rodrigues

Revista Brasileira de Entomologia

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2020, Volume 64 N. 3 elocation e20200052

Abstract: En | Text: En | PDF: En

ABSTRACT Hexapods, commonly known as insects, are a neglected taxonomic group in the Fernando de Noronha archipelago, with unanswered questions about their species richness and the ecological processes in which they are involved (e.g., colonization, introduction, establishment, and extinction). Herein, we provide an updated Hexapod checklist with current nomenclatural combinations. The entomofauna of the Fernando de Noronha archipelago is currently composed of 453 species in 21 orders. The orders, and their respective number of species, are: Blattaria (9), Coleoptera (118), Collembola (29), Dermaptera (3), Diplura (1), Diptera (134), Embioptera (1), Hemiptera (29), Hymenoptera (59), Isoptera (2), Lepidoptera (25), Mantodea (1), Neuroptera (3), Odonata (5), Orthoptera (11), Phasmatodea (1), Phthiraptera (6), Psocoptera (3), Siphonaptera (1), Thysanoptera (10), and Zygentoma (2). The archipelago has 263 new taxon records (family + genera + species). Thirty-eight species (3.39%) were described from local specimens and most of them are likely endemic species. This study more than doubles our knowledge (from the previous 190 records) of the entomofauna in this large Brazilian archipelago. This study also provides a baseline for studies on its conservation status and for implementing future environmental management programs.

https://doi.org/10.1590/1806-9665-rbent-2020-0052 2462 downloads

Association between matrix metalloproteinase-9 gene polymorphism and breast cancer in Brazilian women
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Oliveira, Victor Alves de

; Chagas, Diego Cipriano

; Amorim, Jefferson Rodrigues

; Pereira, Renato de Oliveira

; Nogueira, Thais Alves

; Borges, Victória Maria Luz

; Campos-Verde, Larysse Maira

; Martins, Luana Mota

; Rodrigues, Gilmara Peres

; Nery Júnior, Elmo de Jesus

; Sampaio, Fabiane Araújo

; Lopes-Costa, Pedro Vitor

; Sousa, João Marcelo de Castro e

; Silva, Vladmir Costa

; Silva, Felipe Cavalcanti Carneiro da

; Silva, Benedito Borges da

Clinics

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2020, Volume 75 elocation e1762

Abstract: En | Text: En | PDF: En

OBJECTIVE: This study aimed to determine the relationship between rs17576 (MMP-9) polymorphism and increased cancer risk in a Brazilian breast cancer cohort. METHODS: This study included 141 women (71 breast cancer patients and 70 controls without breast cancer) who donated 3 mL of their peripheral blood for genomic DNA extraction. This DNA was then genotyped using a real-time polymerase chain reaction. RESULTS: The AG (rs17576) genotype was identified in 26 (18.43%) participants in the case group and in 22 (15.60%) participants in the control group (p=0.274), while the GG genotype was identified in ten (7.09%) participants in the case group and in one (0.70%) participant in the control group (p<0.003 - OR (95% CI) 13.13 (1.73, 593.08). No significant difference in the incidence rates was observed for AG or GG rs17576 genotypes in premenopausal women, p=0.813 and p=0.556, respectively. However, in postmenopausal women, the AG genotype was shown to occur in 14 (22.5%) participants in the case group and in 4 (6.45%) participants in the control (p<0.043), while GG genotype occurred in eight (12.90%) of the individuals in the case group and in none of the individuals in the control group (p<0.006). CONCLUSION: In this study, the MMP-9 rs17576 GG polymorphic variant was shown to be significantly associated with breast cancer risk in premenopausal women, while the AG and GG genotypes were associated with increased cancer risk in postmenopausal women.

https://doi.org/10.6061/clinics/2020/e1762 183 downloads

The deadliest snake according to ethnobiological perception of the population of the Alto Juruá region, western Brazilian Amazonia
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Silva, Jessyca Lima da

; Siva, Ageane Mota da Amaral, Gardênia Lima Gurgel do Ortega, Givanildo Pereira Monteiro, Wuelton Marcelo Bernarde, Paulo Sérgio

Revista da Sociedade Brasileira de Medicina Tropical

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2020, Volume 53 elocation e20190305

Abstract: En | Text: En | PDF: En

Abstract INTRODUCTION: We examined the ethnobiological perception of the population of the Alto Juruá region about different snake species, in terms of their dangerousness and manifestations of envenomation. METHODS: We interviewed 100 villagers who were active in the forests. RESULTS: Lachesis muta was considered the most venomous snake, and Bothrops atrox appeared to be the most feared snake species. CONCLUSIONS: The high incidence, severity, and mortality of B. atrox bites and the severity and mortality of L. muta bites were the factors that contributed to these species being perceived as the most feared and venomous snakes.

https://doi.org/10.1590/0037-8682-0305-2019 1176 downloads

Validation of the rapid test Carestart(tm) G6PD among malaria vivax-infected subjects in the Brazilian Amazon
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Brito, Marcelo Augusto Mota Peixoto, Henry Maia Almeida, Anne Cristine Gomes de Oliveira, Maria Regina Fernandes de Romero, Gustavo Adolfo Sierra Moura-Neto, José Pereira Singh, Nakul Monteiro, Wuelton Marcelo Lacerda, Marcus Vinícius Guimarães de

Revista da Sociedade Brasileira de Medicina Tropical

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aug 2016, Volume 49 N. 4 Pages 446 - 455

Abstract: En | Text: En | PDF: En

Abstract: INTRODUCTION: In the Brazilian Amazon, malaria infections are primarily caused by Plasmodium vivax. The only drug that kills the hypnozoite form of P. vivax is primaquine, thereby preventing relapse. However, treating glucose-6-phosphate dehydrogenase (G6PD)-deficient individuals with primaquine can lead to severe hemolysis. G6PD deficiency (G6PDd) affects approximately 400 million people worldwide, most of whom live in malaria-endemic areas. Therefore, clinicians need tools that can easily and reliably identify individuals with G6PDd. This study estimated the accuracy of the Carestart(tm) G6PD rapid test (Access Bio) in the diagnosis of G6PDd in male participants with and without P. vivax acute malaria. METHODS: Male participants were recruited in Manaus. Malaria diagnosis was determined by thick blood smear. G6PD quantitative analysis was performed spectro photometrically at a wave length of 340nm. The Carestart(tm) G6PD test was performed using venous blood. Genotyping was performed for individuals whose samples had an enzyme activity less than 70% of the normal value. RESULTS: Six hundred and seventy-four male participants were included in this study, of whom 320 had a diagnosis of P. vivax malaria. In individuals with enzyme activity lower than 30% (n=13), the sensitivity, specificity, positive predictive value, and negative predictive value of the Carestart(tm) G6PD test were as follows: 61.5% (95%CI: 35.5%-82.3%), 98.3% (95%CI: 97.0%-99.1%), 42.1% (95%CI: 23.1%-63.7%), and 99.2% (95%CI: 98.2%-82.3%), 98.3% (95%CI: 97.0%-99.1%), 42.1% (95%CI: 23.1%-63.7%), and 99.2% (95%CI: 98.2%-99.7%), respectively. Increases in sensitivity were observed when increasing the cut-off value. CONCLUSIONS: Despite low sensitivity, Carestart(tm) G6PD remains a good alternative for rapid diagnosis of G6PDd in malaria-endemic regions.

https://doi.org/10.1590/0037-8682-0134-2016 10028 downloads

Valor alimentício do capim marandu, adubado ou consorciado com amendoim forrageiro, e características da carcaça de bovinos de corte submetido à pastejo rotacionado
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PEREIRA, Marcelo Mota REZENDE, Cláudia de Paula PEDREIRA, Márcio Santos PEREIRA, José Marques MACEDO, Thasia Martins SILVA, Herymá Giovane de Oliveira BORGES, Augusto Magno Ferreira SILVA, Antonio Márcio Pereira

Revista Brasileira de Saúde e Produção Animal

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sep 2015, Volume 16 N. 3 Pages 643 - 657

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

ResumoObjetivou-se, com este estudo, avaliar a composição química do pasto de capim marandu consorciado com amendoim forrageiro ou adubado com N e as características das carcaças de bovinos de corte. A pastagem foi manejada sob pastejo rotacionado com lotação contínua, e carga animal variável, utilizando-se 16 novilhos da raça nelore. Na avaliação de produção de matéria seca verde total, foram observadas significâncias estatísticas entre os tratamentos e períodos avaliados, sendo que o tratamento com o consórcio apresentou uma maior média. A variável proteína bruta (PB) apresentou significância entre os tratamentos e períodos avaliados. Os teores de nutrientes digestíveis totais (NDT) e fibras em detergente neutro (FDN) não apresentaram efeito significativo na avaliação da gramínea. Os períodos que apresentaram os menores ganhos médios diários (GMD) foram o quarto e sexto períodos. Para os teores de PB, NDT e FDN da leguminosa, o terceiro período foi o que apresentou as menores médias. Para as variáveis GMD, número de animais por dia (NAD), GPV, a estatística apresentou significância para a interação, sendo que o primeiro período do tratamento com o consórcio apresentou as maiores médias. No tratamento da adubação, as maiores taxas de lotação foram conseguidas nas estações onde ocorreram as adubações químicas. Foi observada significância estatística para a variável conformação na classificação das carcaças. O consórcio do amendoim forrageiro cv. Belmonte pode ser utilizado em substituição à adubação, com 120kg/N/ha, pois garante o mesmo ganho de peso por animal, sem alterar as características comerciais das carcaças.

AbstractThe objective of this study was to evaluate the chemical composition of the pasture Brachiaria Brizantha intercropped with peanut or fertilized with N and carcass characteristics of beef cattle. The pasture was managed under rotational grazing with stocking continues, with variable stocking, using 16 Nellore bulls. In the evaluation of dry matter production total green significance was observed between treatments and periods evaluated, and treatment consortium presented a higher average. The variable crude protein showed significance between treatments and periods. The NDT and FDN had no significant effect on the evaluation of the grass. Periods had lower ADG were the 4th and 6th periods. For the PB, FDN and NDT legume 3rd period showed the lowest averages. For variables GMD, NAD, GPC showed statistical significance for the interaction, and the 1st treatment period consortium submitted the highest averages. In the treatment of the largest fertilizer stocking rates were achieved in stations where chemical fertilization occurred. Statistical significance was observed for the variable conformation carcass classification. The consortium forage peanut cv. Belmonte may be using to replace fertilization with 120kg / N / ha, as it ensures even weight gain per animal, without changing the commercial carcass traits.

https://doi.org/10.1590/S1519-99402015000300015 1629 downloads

Perfil tecnológico de sistemas de produção de leite resfriado
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Fernandes, Sérgio Augusto de Albuquerque Faleiro, Amanda dos Santos Ferrão, Sibelli Passini Barbosa Vieira, Viviane Figueiredo Souza, Dayana Rodrigues Nunes, Leonardo Ribeiro Santos, Neomara Brito de Lisboa Ferrão, Iram da Silva Pereira, Marcelo Mota Freitas, Mazzilli Amaral Matarazzo, Soraia Vanessa

Revista Brasileira de Saúde e Produção Animal

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mar 2012, Volume 13 N. 1 Pages 1 - 12

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Objetivou-se com este trabalho caracterizar os fornecedores de leite de um laticínio comercial localizado no Território de Identidade de Itapetinga por meio da aplicação de um questionário semiestruturado. Do total de 28 fornecedores foram entrevistados 17, estes estratificados em pequenos (até 50kg de leite/dia), médios (51 a 200kg de leite/dia) ou grandes (maior que 200kg de leite/dia). A análise dos dados foi realizada por meio de análises unidimensionais e análises não paramétricas e comparação de médias. Não foram observados pequenos fornecedores de leite. Dos entrevistados, 17,6% foram caracterizados como médios e 82,4% como grandes fornecedores de leite. O tempo médio na atividade leiteira variou entre 20 e 22 anos, respectivamente para grandes e médios fornecedores de leite. O agrupamento genético observado nos dois estratos foi o cruzamento Zebu X Taurinos, com produção média de 1.260kg/leite/lactação e 1.594kg/leite/lactação, respectivamente para os médios e grandes fornecedores. O período de lactação foi semelhante entre os estratos (274 dias). A idade ao primeiro parto variou entre 28 (médios) e 25 meses (grandes). O intervalo de partos foi de 406 dias (médios) e 480 dias (grandes). Todos os fornecedores entrevistados vacinavam seus animais contra febre aftosa. Apenas um fornecedor realiza o teste com tuberculina. Os sistemas de produção estudados apresentam deficiência no uso de tecnologias disponíveis e necessitam de planejamento para melhorar os indicadores zootécnicos.

This study aimed to characterize the dairy producers in Territory of Itapetinga region using a semi-structured questionnaire. Seventeen dairy producers were interviewed and stratified into: small (up to 50kg milk/day), medium (51 to 200kg of milk/day) and large (more than 200kg of milk/day). The data analysis was performed using one-dimensional analysis and nonparametric analysis. Small producers have not been identified. Of all dairy producers interviewed, 17.6% were characterized as medium and 82.4% as large dairy producers. The average time in dairy activity was 22 years to medium dairy producers and 20 years to large dairy producers. The herd genetic composition was crossbreed Zebu x Taurus. The average milk production was 1260kg/milk/lactation to medium dairy producers and 1594kg/milk/lactation to large dairy producers. The lactation period was 274 days to both strata. The age at first calving ranged from 25 to 28 months, respectively, to large or medium dairy producers. The calving interval was 406 days to medium dairy producers and 480 days to large producers. All interviewed dairy producers vaccine their herds against foot and mouth disease. Only one dairy producer realizes the tuberculin´s test. The production systems evaluated showed low use of technologies and require a strategic management to improve animal production.

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10.

Brazilian coffee genome project: an EST-based genomic resource
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Vieira, Luiz Gonzaga Esteves Andrade, Alan Carvalho Colombo, Carlos Augusto Moraes, Ana Heloneida de Araújo Metha, Ângela Oliveira, Angélica Carvalho de Labate, Carlos Alberto Marino, Celso Luis Monteiro-Vitorello, Claúdia de Barros Monte, Damares de Castro Giglioti, Éder Kimura, Edna Teruko Romano, Eduardo Kuramae, Eiko Eurya Lemos, Eliana Gertrudes Macedo Almeida, Elionor Rita Pereira de Jorge, Érika C. Albuquerque, Érika V. S. Silva, Felipe Rodrigues da Vinecky, Felipe Sawazaki, Haiko Enok Dorry, Hamza Fahmi A. Carrer, Helaine Abreu, Ilka Nacif Batista, João A. N. Teixeira, João Batista Kitajima, João Paulo Xavier, Karem Guimarães Lima, Liziane Maria de Camargo, Luis Eduardo Aranha de Pereira, Luiz Filipe Protasio Coutinho, Luiz Lehmann Lemos, Manoel Victor Franco Romano, Marcelo Ribeiro Machado, Marcos Antonio Costa, Marcos Mota do Carmo Sá, Maria Fátima Grossi de Goldman, Maria Helena S. Ferro, Maria Inês T. Tinoco, Maria Laine Penha Oliveira, Mariana C. Van Sluys, Marie-Anne Shimizu, Milton Massao Maluf, Mirian Perez Eira, Mirian Therezinha Souza da Guerreiro Filho, Oliveiro Arruda, Paulo Mazzafera, Paulo Mariani, Pilar Drummond Sampaio Correa Oliveira, Regina L.B.C. de Harakava, Ricardo Balbao, Silvia Filippi Tsai, Siu Mui Mauro, Sonia Marli Zingaretti di Santos, Suzana Neiva Siqueira, Walter José Costa, Gustavo Gilson Lacerda Formighieri, Eduardo Fernandes Carazzolle, Marcelo Falsarella Pereira, Gonçalo Amarante Guimarães

Brazilian Journal of Plant Physiology

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mar 2006, Volume 18 N. 1 Pages 95 - 108

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

O café é um dos principais produtos agrícolas, sendo considerado o segundo item em importância do comércio internacional de "commodities". O gênero Coffea pertence à família Rubiaceae que também inclui outras plantas importantes. Este gênero contém aproximadamente 100 espécies, mas a produção comercial é baseada somente em duas espécies, Coffea arabica e Coffea canephora, que representam aproximadamente 70 % e 30 % do mercado total de café, respectivamente. O Projeto Genoma Café Brasileiro foi desenvolvido com o objetivo de disponibilizar os modernos recursos da genômica à comunidade científica e aos diferentes segmentos da cadeia produtiva do café. Para isso, foram seqüenciados 214.964 clones escolhidos aleatoriamente de 37 bibliotecas de cDNA de C. arabica, C. canephora e C. racemosa representando estádios específicos do desenvolvimento de células e de tecidos do cafeeiro, resultando em 130.792, 12.381 e 10.566 seqüências de cada espécie, respectivamente, após processo de trimagem. Os ESTs foram agrupados em 17.982 contigs e em 32.155 singletons. A comparação destas seqüências pelo programa BLAST revelou que 22 % não tiveram nenhuma similaridade significativa às seqüências no banco de dados do National Center for Biotechnology Information (de função conhecida ou desconhecida). A base de dados de ESTs do cafeeiro resultou na identificação de cerca de 33.000 unigenes diferentes. Os resultados de anotação das seqüências foram armazenados em base de dados "online" em <A HREF="http://www.lge.ibi.unicamp.br/cafe">http://www.lge.ibi.unicamp.br/cafe</A>. Os recursos desenvolvidos por este projeto disponibilizam ferramentas genéticas e genômicas que podem ser decisivas para a sustentabilidade, a competitividade e a futura viabilidade da agroindústria cafeeira nos mercados interno e externo.

Coffee is one of the most valuable agricultural commodities and ranks second on international trade exchanges. The genus Coffea belongs to the Rubiaceae family which includes other important plants. The genus contains about 100 species but commercial production is based only on two species, Coffea arabica and Coffea canephora that represent about 70 % and 30 % of the total coffee market, respectively. The Brazilian Coffee Genome Project was designed with the objective of making modern genomics resources available to the coffee scientific community, working on different aspects of the coffee production chain. We have single-pass sequenced a total of 214,964 randomly picked clones from 37 cDNA libraries of C. arabica, C. canephora and C. racemosa, representing specific stages of cells and plant development that after trimming resulted in 130,792, 12,381 and 10,566 sequences for each species, respectively. The ESTs clustered into 17,982 clusters and 32,155 singletons. Blast analysis of these sequences revealed that 22 % had no significant matches to sequences in the National Center for Biotechnology Information database (of known or unknown function). The generated coffee EST database resulted in the identification of close to 33,000 different unigenes. Annotated sequencing results have been stored in an online database at <A HREF="http://www.lge.ibi.unicamp.br/cafe">http://www.lge.ibi.unicamp.br/cafe</A>. Resources developed in this project provide genetic and genomic tools that may hold the key to the sustainability, competitiveness and future viability of the coffee industry in local and international markets.

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Gomes, Marco Antonio Mota Pierin, Angela Maria Geraldo Sbissa, Antonio Silveira Nogueira, Armando da Rocha Brandão, Ayrton Pires Rodrigues, Cibeli I. Saad Mello, Edgar Pessoa de Mello Filho, José Xavier de Bodanese, Luiz Carlos Toscano, Paulo Ferreira Filho, Sebastião Nobre, Fernando Tavares, Agostinho Lopes, Antonio Carlos Ribeiro, Jorge Pinto Ayoub, José Carlos Aydar Ribeiro, José Márcio Introcaso, Luiz Corrêa, Marcelo Maranhão, Mario Jabur, Pedro Nascimento, Raimundo Marques Cunha, Roberto de Sá Mulinari, Rogério Andrade Machado, Carlos Alberto Avila, Adriana Andrade, Clóvis Oliveira Rocha, João Carlos Lopes, Margarida Maria Veríssimo Arruda, Maria Cecília G. Marinho Azevedo, Maria Fátima Carvalho, Maria Helena C. Lipp, Marilda Novaes Kohlmann, Nárcia Elisa B. Jesus, Neide de Jardim, Paulo César da Veiga Amodeo, Celso Negrão, Carlos Eduardo Ferreira, Celso Cunha, Cláudio Pereira da Toscano, Eli Lima, Eliuden Galvão de Monego, Estelamaris Tronco Braga, Fátima Lúcia Machado Chaves Jr., Hilton de Castro Heiman, Joel Carvalho, Tales de Kohlmann Jr., Osvaldo Avezum, Alvaro Ribeiro, Artur Beltrame Gomes, Carlos Alberto Giorgi, Dante Marcelo Artigas Feitosa, Gilson Ohashi, Harue Ramirez, José Antonio Franchini Machado, Marcelo Marcondes Salgado Filho, Natalino Luna, Rafael Leite Franco, Roberto Jorge da Silva Santos, Robson Augusto dos Oigman, Wille Pascoal, Istênio Fernandes Massaro, Airton Atallah, Álvaro Nagib Brandão, Andréa Freitas, Elizabete Viana de Cordovil, Ivan Oliveira, José Egídio Paulo de Ramos, José Geraldo L. Zanella, Maria Teresa Wajngarten, Maurício Miranda, Roberto Dischinger Kahhale, Soubihe Koch, Vera Mion Jr., Décio Guimarães, Armênio C. Palmeira, Catia Sueli Forjaz, Claudia Lucia de Moraes Coelho, Eduardo B. Almeida, Fernando Antonio Pellizari, Isabel Cristina Estefano Ribeiro, Marcos Ausenka Batlouni, Michel Lotufo, Paulo Capelari, Regina Teresa Magalhães, Lucélia C. Afiune Neto, Abrahão Cury, Abrão Moreira, Alci Souza, Ana Luisa de Fuchs, Flavio Danni Lessa, Ines Malachias, Marcus V. Bolívar Bezerra, Romero Fuchs, Sandra Praxedes, José Nery Cambara, Antonio Lucon, Antonio Marmo Mendonça, Berenice Borelli, Flavio Silva, Helio B. Romão Jr., João Egidio Carvalho, José Gastão Rocha Santello, José Luiz Bortolotto, Luiz Matavelli, Luis Celso Pinheiro, Maria Eliete Guimarães, Valéria

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mar 2004, Volume 82 Suppl. 4 Pages 5 - 5

Abstract: Pt | Text: Pt | PDF: Pt

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