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| Registros recuperados: 79 | |
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| Duarte,Tonya Azevedo; Nery,Joilda Silva; Boechat,Neio; Pereira,Susan Martins; Simonsen,Vera; Oliveira,Martha; Gomes,Maria Gabriela Miranda; Penha-Gonçalves,Carlos; Barreto,Mauricio Lima; Barbosa,Theolis. |
| ABSTRACT Introduction: The Mycobacterium tuberculosis East African-Indian (EAI) spoligotyping family (belonging to lineage 1, Indo-Oceanic, defined by the region of deletion RD239) is distributed worldwide, but is more prevalent in Southeast Asia, India, and East Africa. Studies in Latin America have rarely identified EAI. In this study, we describe the occurrence of the EAI family in Brazil. Methods: EAI was identified in a systematic literature review of genetic diversity studies pertaining to M. tuberculosis in Brazil, as well as in a survey conducted in Salvador, Bahia, located in the northeastern region of this country. Results: The EAI6-BGD1 spoligotyping family and the EAI5 Spoligotype International Type (SIT) 1983 clade were the most frequently... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mycobacterium tuberculosis; Phylogeography; Genotyping; Epidemiology. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702017000300317 |
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| Zhong,Zhixiong; Wu,Heming; Wu,Hesen; Zhao,Pingsen. |
| Abstract There is currently no data about the genetic variations of APOE in Hakka population in China. The aim of this study was to analyze the allelic and genotypic frequencies of APOE gene polymorphisms in a large ethnic Hakka population in southern China. The APOE genes of 6,907 subjects were genotyped by the gene chip platform. The allele and genotype frequencies were analyzed. Results showed that the ∊3 allele had the greatest frequency (0.804) followed by ∊2 (0.102), and ∊4 (0.094), while genotype ∊3/∊3 accounted for 65.43% followed by ∊2/∊3 (15.85%), ∊3/∊4 (14.13%), ∊2/∊4 (3.01%), ∊4/∊4 (0.84%), and ∊2/∊2 (0.74%) in all subjects. The frequencies of the ∊4 allele in Chinese populations were lower than Mongolian and Javanese, while the frequencies of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apolipoprotein E; Genetic polymorphism; Hakka; Southern China; Genotyping. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500742 |
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| Dulgheroff,A.C.B.; Pereira,W.A.B.; Sarmento,R.R.; Silva,G.A.V.; Naveca,F.G.; Domingues,A.L.S.. |
| RESUMO O objetivo deste estudo foi detectar rotavírus em fezes de bezerros com diarreia em Uberaba, MG, e caracterizar os genes VP7 e VP4 por meio da genotipagem e da análise filogenética. Setenta e quatro amostras foram coletadas entre novembro de 2008 e setembro de 2009. A detecção do vírus foi feita por teste de aglutinação e as amostras positivas foram submetidas à transcrição reversa, seguida de reação em cadeia da polimerase (RT-PCR), tipagem por PCR e sequenciamento. A taxa de detecção de rotavírus foi de 6,8% e todas as amostras apresentaram o genótipo G6P[5]. A análise filogenética mostrou que as amostras do genótipo G6 pertencem à linhagem IV e que, para ambos os genes (VP7 e VP4), as amostras deste estudo compõem um sub-cluster à parte daquele... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Bovine rotavirus; Genotyping; Genetic lineage. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000401090 |
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| Xu-Guang,Liu; Fu-Ping,Song; Si-Yuan,Wen; Sheng-Qi,Wang; Da-Fang,Huang; Jie,Zhang. |
| We have developed a parallel, rapid, high-throughput oligonucleotide microarray-based assay for the reliable detection and genotyping of three cry genes (cry1, cry2 and cry9) in Bacillus thuringiensis (Bt). After the non-polymerase chain reaction (PCR), amplified Bt genomic DNA were fluorescent-labeled using a random primer. The corresponding oligonucleotide probes were designed for the different cry genes that can hybridize Bt genomic DNA after cluster analysis and were printed on glass slides. This microarray has unambiguously detected and identified the cry genes in 10 isolates and reference Bt. Our data demonstrates that the microarray assay is simple and rapid for the detection and genotyping of genes. This type of assay is also a potentially... |
| Tipo: Journal article |
Palavras-chave: Oligonucleotide microarray; Cry genes; Genotyping; Random primer labeling; Bioinformatics. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200004 |
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| Luz,José Magno Queiroz; Machado,Daniel Lucas Magalhães; Maciel,Gabriel Mascarenhas; Freitas,Joelson André de; Oliveira,Roberta Camargos de. |
| ABSTRACT The commercial use of onion hybrids is preferred by producers. In contrast, the production of hybrid onion seeds is extremely inefficient. This is due to the use of lineages obtained by successive self-fertilizations assuming the effect of inbreeding depression per se. Therefore, it is necessary to understand new alternatives to reduce the effect of inbreeding depression in the strains. The objective of this study was to evaluate possible differences in polymorphism and levels of heterozygosity of strains obtained from intercrossed and self-fertilized plants. Twelve onion populations belonging to Bayer’s breeding program (Granex, IPA-1, IPA-2 and IPA-3) were used, obtained by self-fertilization of one plant, intercrossing of two plants or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa; Hybrid; Onion polymorphism; Genotyping; Primers. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362020000300274 |
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| MALTZAHN, L. E.; VIANA, V. E.; BUSANELLO, C.; VENSKE, E.; GIRARDI, C. L.; OLIVEIRA, A. C. DE; PEGORARO, C.. |
| Rice yield is frequently impaired by abiotic adverse conditions in several parts of the globe. One of these constraints is soil iron toxicity. Plants respond to adverse conditions by activating different mechanisms, some of which have already been elucidated. Recently, autophagy has been associated with plant tolerance to abiotic stresses, however, the involvement of this mechanism in the response to iron toxicity has never been studied. Autophagy is a process of recycling cellular components and involves approximately 30 genes in rice. Thus, the objective of this study was to characterise the regulation and transcriptional activation of OsATG genes in rice seedlings under iron toxicity. In this condition, OsATG genes were induced in the tolerant genotype... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Transcriptional regulation; Abiotic stress; Autophagy; Gene expression; Genotyping; Iron. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1124879 |
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| Mardegan,Rita de Cássia; Klein,Marlise Inêz; Golvea,Magda Baglione; Rodrigues,Janaina Aparecida Oliveira; Gonçalves,Reginaldo Bruno; Höfling,José Francisco. |
| Candida albicans oral strains collected from caries-free and caries-active healthy children ranging from 24 to 36 months old, were studied. The aim of the study was to determine proteinase and phospholipase activities produced by Candida albicans in the two groups and to determine the phenotypic diversity of these enzymes based on genetic polymorphism using the AP-PCR method. Strains identified by morphological and fermentation tests as C. albicans were grown in proteinase and phospholipase agar media at 37ºC for 7 and 4 days, respectively. After the incubation period, the enzyme activity of the proteinase and phospholipase positive strains was measured. All strains were subjected to AP-PCR, using the arbitrary primer AP-3. The enzymatic analysis showed no... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Candida albicans; Genotyping; Proteinase; Phospholipase; Virulence. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000100005 |
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| Brito,Wilia Marta Elsner Diederichsen de; Munford,Veridiana; Villaça,André Martins; Caruzo,Thabata Alessandra Ramos; Rácz,Maria-Lucia. |
| Ten faecal samples of bovine rotavirus from calves less than 30 days old from an outbreak of diarrhea in Hidrolândia, Goiás, Brazil were submitted to serological and molecular characterization, using enzyme immunoassay for subgrouping and serotyping, PAGE for determination of electropherotypes and PCR for genome typing. Nine samples belonged to group A/subgroup I rotavirus and one sample was group A / subgroup non-I/non-II. Four samples were characterized as G10P[11] (B223-like), four samples showed a mixture of two rotavirus strains (G6G10 and P[5]P[11]), one sample was characterized as G6P[11] and one sample was characterized only by G serotyping/genotyping, and did not react with any P primer used. Two electropherotypes were detected and both were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rotavirus; Diarrhea; Bovine; Genotyping; Serotyping. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822000000200015 |
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| Arias,Renée S; Stetina,Salliana R; Scheffler,Brian E. |
| Currently, a large number of microsatellites are available for Rotylenchulus reniformis (reniform nematode); however, two barriers exist for genotyping samples from different geographical areas. The limited amount of nucleic acids obtained from single nematodes which would require their multiplication to obtain enough DNA for testing; and the strictly regulated transport of live samples and multiplication in greenhouse for being a plant pathogen. Whole-genome amplification (WGA) of samples consisting of one and five dead gravid females with their associated egg masses was successfully performed on disrupted tissue using three commercial kits. DNA yield after WGA ranged from 0.5 to 8 µg and was used to test 96 microsatellite markers we previously developed... |
| Tipo: Journal article |
Palavras-chave: Genotyping; Reniform nematode; SSR; STR; WGA. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582011000300014 |
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| Silva,Ronaldo Celerino da; Cruz,Heidi Lacerda Alves da; Brandão,Lucas André Cavalcanti; Guimarães,Rafael Lima; Montenegro,Lilian Maria Lapa; Schindler,Haiana Charifker; Segat,Ludovica; Crovella,Sergio. |
| Abstract β-Defensin-1, an antimicrobial peptide encoded by the DEFB1 gene, is known to play an important role in lung mucosal immunity. In our association study we analyzed three DEFB1 functional polymorphisms -52G>A (rs1799946), -44C>G (rs1800972) and -20G>A (rs11362) in 92 tuberculosis patients and 286 healthy controls, both from Northeast Brazil: no association was found between the studied DEFB1 polymorphisms and the disease. However we cannot exclude that this lack of association could be due to the low number of subjects analyzed, as suggested by the low statistical power achieved for the three analyzed SNPs (values between 0.16 and 0.50). |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tuberculosis; Innate immunity; DEFB1; Genotyping; Polymorphism. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000200389 |
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| Nozawa,Carlos M; Kerntopf,Gustavo Franthesco; Czernisz,Érika da Silva; Albuquerque,Daniele; Romanin,Priscila; Freitas,José Felipe Eliseu; Santos,Norma; Benati,Fabrício José; Pietruchinski,Eduardo; Linhares,Rosa Elisa Carvalho. |
| Acute diarrheal disease is still one of the major public health problems worldwide. Rotaviruses (RV) are the most important viral etiologic agents and children under five years of age are the target population. OBJECTIVE: To investigate the rate of RV infection in hospitalized patients due to acute diarrhea in the cities of Ponta Grossa, Londrina and Assai - Paraná. METHODS: Latex agglutination (LA); immunochromatography (ICG); polyacrylamide gel electrophoresis (PAGE) and negative staining electron microscopy (ME) tests were used to detect the virus. For the genotyping, RT-PCR and RT-PCR-ELISA were used, respectively, for NSP4 and VP4/VP7. RESULT: Out of 124 samples there were 69 positive stool samples for RV, for at least one of the used tests, 67 of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Rotavirus; Determination; Hospitalized patients; Genotyping. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000600002 |
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| Lima,Eleonidas Moura; Lopes,Otávio Sérgio; Soares,Leonardo Ferreira; Arruda,Talitta Dantas; Gigek,Carolina Oliveira; Melo,Cynthia Germoglio Farias; Smith,Marilia Arruda Cardoso; Oliveira,João Ricardo Gonçalves; Medeiros,Arnaldo; Delatorre,Plínio; Burbano,Rommel Rodriguez. |
| Gastric cancer (GC) is a multifactorial disease with a high mortality rate in Brazil and worldwide. This work aimed to evaluate single nucleotide polymorphisms (SNP) rs1695, in the Glutathione S-Transferase Pi (GSTP1) gene in GC samples by comparative analysis Specific PCR - ASP and Dideoxy Single Allele-Specific PCR - DSASP methods. The DSASP is the proposed new method for allelic discrimination. This work analyzed 60 GC samples, 26 diffuse and 34 intestinal types. The SNP rs1695 of the GSTP1 gene was significantly associated with GC analyzed by DSASP method (χ2 = 9.7, P < 0.05). A comparative analysis of the data obtained from both methods did not differ significantly (χ2 = 0.08, P > 0.05). These results suggest that the SNP rs1695 of the GSTP1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DSASP method; Genotyping; Gastric Cancer. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132015000300414 |
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| GOGGARD, R.; STEED, A.; CHINOY, C.; FERREIRA, J. R.; SCHEEREN, P. L.; MACIEL, J. L. N.; CAIERAO, E.; TORRES, G. A. M.; CONSOLI, L.; SANTANA, F. M.; FERNANDES, J. M. C.; SIMMONDS, J.; UAUY, C.; COCKRAM, J.; NICHOLSON, P.. |
| Background: Wheat blast, caused by Magnaporthe oryzae Triticum (MoT) pathotype, is a global threat to wheat (Triticum aestivum L.) production. Few blast resistance (R) genes have been identified to date, therefore assessing potential sources of resistance in wheat is important. The Brazilian wheat cultivar BR 18-Terena is considered one of the best sources of resistance to blast and has been widely used in Brazilian breeding programmes, however the underlying genetics of this resistance are unknown. Results: BR 18-Terena was used as the common parent in the development of two recombinant inbred line (RIL) F6 populations with the Brazilian cultivars Anahuac 75 and BRS 179. Populations were phenotyped for resistance at the seedling and heading stage using... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Wheat blast; Seedling resistance; Head resistance; Single nucleotide polymorphism (SNP) genotyping; Triticum Aestivum; Magnaporthe oryzae; Quantitative trait loci; Genotyping. |
| Ano: 2020 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1124870 |
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| Mattos,Adriana Tonani de; Freitas,Luciana Bueno de; Lima,Bettina Moulin Coelho; Miranda,Angélica Espinosa; Spano,Liliana Cruz. |
| Given the causal relationship between specific types of HPV with cervical cancer and precursor lesions, it is important to identify the viral type involved. The aim of this study is to access the prevalence of HPV types in HIV seropositive and seronegative women. Accordingly, 77 HPV positive cervical samples were obtained from 284 women (seropositive (n=112) and seronegative (n=172) for HIV) who attended a Sexually Transmitted Infection clinic, in Vitoria, Southeastern Brazil. Viral DNA was amplified by PCR using MY09/MY11 degenerated primers and the genotyping was performed by Restriction Fragment Length Polymorphism. Seventy five out of the 77 HPV samples were genotyped: 6, 11, 13, 16, 18, 26, 31, 31b, 32, 33, 34, 35, 52, 53, 55, 56, 58, 59, 61, 62, 64,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Human papillomavirus (HPV); HIV seropositive and seronegative women; RFLP; Genotyping; Cervical secretion. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000200047 |
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| Picazo,María G; García-Olmo,Dolores C. |
| Background Genotyping of mice is a common procedure in animal facilities. The aim of this study was to compare the quantity and quality of DNA extracted from samples obtained from young mice (YM; 10 d old) and adult mice (AM; 12 weeks old). We collected samples from the tail and ear of YM and AM. We also sampled blood, check cells (via buccal swabs), hair and fecal pellets of AM, and biopsied distal phalanx of YM. We isolated DNA using commercial kits and determined concentrations and purity by spectrophotometry. The integrity of DNA was evaluated by agarose-gel electrophoresis and polymerase chain reaction (PCR). Results DNA in all samples was amplified successfully but the intensities of bands after electrophoresis was heterogeneous. In general, tissues... |
| Tipo: Journal article |
Palavras-chave: DNA extraction; Genotyping; Mouse. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582015000200004 |
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| Registros recuperados: 79 | |
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