Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 77
Primeira ... 1234 ... Última
Imagem não selecionada

Imprime registro no formato completo
Designing and validation of genus-specific primers for human gut flora study Electron. J. Biotechnol.
Rekha,Rani; Alam Rizvi,Moshahid; Jaishree,Paul.
The aim of this study, was to design and validate 16S rRNA targeted oligonucleotide genus specific primers for amplifying the predominant members of gut flora using polymerase chain reaction. Primers were validated against human faecal samples. Gut flora of a normal individual was compared with that of two diseased individuals. Our observations showed that the genera Lactobacillus, Bacteroides, Peptococcus, Bifidobacterium, and E. coli were invariably present in all studied subjects however, the absence of butyrate producing bacteria Ruminococcus and Peptostreptococcus were significant. Presence of the members of the genus, Campylobacter in both the diseased samples were also unusual.
Tipo: Journal article Palavras-chave: 16S rRNA based primers; Anaerobic bacteria; Diarrhoea patient; Polymerase chain reaction.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000500005
Imagem não selecionada

Imprime registro no formato completo
Deletion of DNA sequences of using a polymerase chain reaction based approach Electron. J. Biotechnol.
Pérez-Pinera,Pablo; Menéndez-González,Manuel; Vega,José Antonio.
We developed a simple, rapid and reliable method to delete DNA fragments in plasmids using a polymerase chain reaction based amplification of the circular DNA sequence that excludes the fragment to be deleted. The primers are designed to contain a non-complementary 5' sequence consisting of a restriction enzyme target sequence. Following PCR amplification, the plasmid is digested with Dpn I to eliminate the template DNA, with the chosen restriction enzyme, and ligated. The only limitation is the selection of the restriction enzyme target sequence that must not be present in the original plasmid. The method is straightforward in its execution and success relies on a meticulous primer design that permits us obtain 100% of transformants containing the desired...
Tipo: Journal article Palavras-chave: Deletion; Mutagenesis; Polymerase chain reaction; Plasmid.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000500018
Imagem não selecionada

Imprime registro no formato completo
The presence of sboA and spaS genes and antimicrobial peptides subtilosin A and subtilin among Bacillus strains of the Amazon basin Genet. Mol. Biol.
Velho,Renata Voltolini; Basso,Ana Paula; Segalin,Jeferson; Costa-Medina,Luis Fernando; Brandelli,Adriano.
This report demonstrates the usefulness of PCR for the genes spaS and sboA as a means of identifying Bacillus strains with a potential to produce subtilin and subtilosin A. One collection strain and five Bacillus spp. isolated from aquatic environments in the Amazon basin were screened by PCR using primers for sboA and spaS designed specifically for this study. The sequences of the PCR products showed elevated homology with previously described spaS and sboA genes. Antimicrobial peptides were isolated from culture supernatants and analyzed by mass spectrometry. For all samples, the mass spectra revealed clusters with peaks at m/z 3300-3500 Da, corresponding to subtilosin A, subtilin and isoforms of these peptides. These results suggest that the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacillus; Bacteriocin; Polymerase chain reaction; Subtilin; Subtilosin A.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000100014
Imagem não selecionada

Imprime registro no formato completo
Non-detection of Epstein-Barr virus and human papillomavirus in a region of high gastric cancer risk indicates a lack of a role for these viruses in gastric carcinomas Genet. Mol. Biol.
Yuan,Xiao-yan; Wang,Ming-yi; Wang,Xiao-yan; Chang,Ai-ying; Li,Jie.
Gastric mucosa tissue was collected from patients with gastroduodenal diseases in a region of norrteastern China showing a high risk of gastric cancer incidence. The presence of EBV and HPV were assayed to investigate the relationship between gastric carcinomas and virus infection. Neither EBV nor HPV DNA was detected in tissue from the patients. The role of EBV and HPV in gastric cancer is not well understood and still needs to be clarified.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Human papillomavirus; Epstein-Barr virus; Polymerase chain reaction; Gastric carcinoma.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572013000200007
Imagem não selecionada

Imprime registro no formato completo
Validação de métodos qualitativos: uma abordagem para o ensaio de PCR e para a análise microbiológica. Infoteca-e
MAGARELLI, G.; POLEZ, V. L. P.; BEMQUERER, M. P.; MALAQUIAS, J. V..
bitstream/item/226049/1/doc-novo-376.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Metódo analítico; Validação; Método de Análise; Microrganismo; Polymerase chain reaction.
Ano: 2021 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1134429
Imagem não selecionada

Imprime registro no formato completo
Development of a polymerase chain reaction for the detection of abalone herpesvirus infection based on the DNA polymerase gene ArchiMer
Chen, M.h.; Kuo, S. T.; Renault, Tristan; Friedman, C. S.; Chang, P. H..
A 5781-base pair (bp) fragment of genomic DNA from the Taiwanese abalone herpesvirus was obtained and showed 99% (5767/5779) homology in the nucleotide sequence and 99% (1923/1926) in the amino acid sequence with the DNA polymerase gene of the abalone herpesvirus strain Victoria/AUS/2007. Homology of the amino acid sequence with the DNA polymerase of ostreid herpesvirus 1 was 30% (563/1856). In this study, a PCR-based procedure for detecting herpesvirus infection of abalone, Haliotis diversicolor supertexta, in Taiwan was developed. The method employed primer sets targeting the viral DNA polymerase gene, and was able to amplify DNA fragments of the expected size from infected samples. Primer sets of 40f and 146r were designed for amplification of an...
Tipo: Text Palavras-chave: Herpes virus; Abalone; Haliotis diversicolor supertexta; DNA polymerase; Polymerase chain reaction.
Ano: 2012 URL: http://archimer.ifremer.fr/doc/00098/20952/19675.pdf
Imagem não selecionada

Imprime registro no formato completo
The development of a loop-mediated isothermal amplification assay for rapid and sensitive detection of abalone herpesvirus DNA ArchiMer
Chen, Meilin; Kuo, S. T.; Renault, Tristan; Chang, P. H..
A loop-mediated isothermal amplification (LAMP) assay was developed for the detection of abalone herpesvirus DNA. Two pairs of primers were designed, based on the sequence of the DNA polymerase gene of abalone herpesvirus. The reaction temperature and time were optimized to 63 °C and 60 min, respectively. LAMP amplicons were analyzed by 2% agarose gel electrophoresis or by visual inspection of a colour change emitted by fluorescent dye. The method developed was specific for the detection of abalone herpesvirus, without cross-reactions with other tested herpesviruses including ostreid herpesvirus 1 (OsHV-1), European eel herpesvirus, koi herpesvirus (KHV) and an avian herpesvirus. The LAMP assay was 100 folds more sensitive than a conventional PCR and 10...
Tipo: Text Palavras-chave: Herpesvirus; Abalone; Haliotis diversicolor supertexta; Polymerase chain reaction; Loop-mediated isothermal amplification; SYBR green PCR.
Ano: 2014 URL: https://archimer.ifremer.fr/doc/00166/27690/25882.pdf
Imagem não selecionada

Imprime registro no formato completo
Multiplex PCR sets of novel microsatellite loci for the great scallop Pecten maximus and their application in parentage assignment ArchiMer
Morvezen, Romain; Cornette, Florence; Charrier, Gregory; Guinand, Bruno; Lapegue, Sylvie; Boudry, Pierre; Laroche, Jean.
We report the isolation, development and multiplex optimisation of 12 new microsatellite loci for the great scallop, Pecten maximus. Diversity was moderate to high, with number of alleles ranging from 4 to 20 and observed heterozygosity between 0.28 and 0.88. Progeny produced in a commercial hatchery was used to test locus power for parentage assignment. The percentage of offspring that was unambiguously assigned to a unique pair of parents was 97% (software package CERVUS-COLONY). Parentage assignment revealed that 22% of the studied progeny resulted from unplanned crosses. Effective population size of the study progeny was also estimated. Our study illustrates the power of microsatellites for the genetic monitoring of hatchery-produced great scallops.
Tipo: Text Palavras-chave: Microsatellites; Polymerase chain reaction; Parentage; Assignment; Bivalve mollusc.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00137/24822/22907.pdf
Imagem não selecionada

Imprime registro no formato completo
ISOLATION OF AN OPHIDIAN PARAMYXOVIRUS (OPMV) IN A CAPTIVE RATTLESNAKE (Crotalus durissus terrificus) FROM BOTUCATU, SÃO PAULO STATE, BRAZIL J. Venom. Anim. Toxins
NOGUEIRA,M. F.; BARRELLA,T. H.; SILVA,R. J. DA; LOPES,C. A. M.; ARAÚJO JÚNIOR,J. P..
This study reports the isolation of an Ophidian Paramyxovirus (OPMV) in sputum of a captive rattlesnake (Crotalus durissus terrificus) kept in a serpentarium located in Botucatu, São Paulo State, Brazil. Polymerase chain reaction (PCR) and nested-PCR were performed for the identification of the isolated virus.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Crotalus durissus terrificus; Rattlesnake; Paramyxovirus; Ophidian Paramyxovirus; Hemagglutination; Polymerase chain reaction.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302002000100013
Imagem não selecionada

Imprime registro no formato completo
American cutaneous leishmaniasis in dogs from an endemic urban area in Cianorte municipality, Paraná State, Brazil J. Venom. Anim. Toxins incl. Trop. Dis.
Cerino,DA; Veloso,J; Perles,TF; Zanzarini,PD; Lonardoni,MVC; Silveira,TGV.
American cutaneous leishmaniasis (ACL) was investigated in dogs from an urban endemic area in Cianorte, Paraná state, Brazil. Of 169 studied dogs, none presented suspected ACL lesions. Eleven animals (6.6%) had anti-Leishmania braziliensis antibodies (titers > 40) detected by the immunofluorescent antibody test (IFAT) while four (2.4%) showed L. braziliensis-complex DNA by the polymerase chain reaction (PCR). Although no associations were found between IFAT or PCR results and age, sex, origin, free-roaming animals or length of residence at the address, the majority of IFAT- or PCR-positive dogs were from the urban area of the city and were allowed to roam freely beyond their neighborhood. The presence of anti-Leishmania braziliensis antibodies and L....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Leishmania braziliensis; Fluorescent antibody technique; Polymerase chain reaction; Urban park.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992010000200007
Imagem não selecionada

Imprime registro no formato completo
Characterization of Clostridium perfringens isolated from mammals and birds from Guwahati city, India J. Venom. Anim. Toxins incl. Trop. Dis.
Rahman,Mafruza S; Sharma,RK; Borah,P; Chakraborty,A; Devi,Mandakini RK; Longjam,N.
Of the 102 samples collected from mammals and birds, both domestic and captive wild, 48 were found to be positive for Clostridium perfringens. Most of the mammal isolates (84.38%) appeared to have been collected from clinically affected animals, while 33.33% of the bird samples were from clinically affected and 21.43% from apparently healthy birds infected with C. perfringens. Isolates revealed high sensitivity to ciprofloxacin, enrofloxacin and norfloxacin. Among the isolated C. perfringens, 30 (62.50%) showed DNase production. Hemolytic activity was recorded in 14 (24.16%) of the isolates and 28 (58.33%) showed phospholipase C production. All the phospholipase C positive isolates revealed the presence of cpa gene encoding alpha (α) toxin. Of the 102...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clostridium perfringens; PCR; Α toxin; Cpa gene; Polymerase chain reaction.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992012000100010
Imagem não selecionada

Imprime registro no formato completo
Detection of bovine Clostridium perfringens by polymerase chain reaction J. Venom. Anim. Toxins incl. Trop. Dis.
Piatti,R. M.; Ikuno,A. A.; Baldassi,L..
A polymerase chain reaction (PCR) assay to detect Clostridium perfringens alpha toxin gene (cpa) was used to identify eighty-nine C. perfringens strains obtained from bovine clinical material. The strains were biochemically characterized as C. perfringens. The isolated strains were cultured on plates containing brain heart infusion agar with 5% sheep blood under anaerobic conditions. DNA extraction was performed by boiling. The 324 bp amplification product of cpa was observed in all isolates. C. sordellii, C. botulinum, C. novyi, and C. septicum were also tested but did not produce any alpha toxin gene amplification. These findings suggest that PCR is a useful assay in identifying C. perfringens toxin types.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Clostridium perfringens; PCR; Alpha toxin; Polymerase chain reaction.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992004000200005
Imagem não selecionada

Imprime registro no formato completo
Prevalence and epidemiology of chronic hepatitis C among prisoners of Mato Grosso do Sul State, Brazil J. Venom. Anim. Toxins incl. Trop. Dis.
Pompilio,MA; Pontes,ERJC; Castro,ARCM; Andrade,SMO; Stief,ACF; Martins,RMB; Mousquer,GJ; Murat,PG; Francisco,RBL; Pompilio,SAL; Rezende,GR; Elias-Junior,E.
In Mato Grosso do Sul state, Brazil, the number of prisoners has increased in the recent years and the control of hepatitis C virus (HCV) has become more complex. The aim of the present study was to estimate the prevalence and identify the genotypes of HCV in prisoners as well as the factors associated with this infectious disease. Thereby, 443 men and 243 women from prisons were interviewed and subjected to blood collection. Anti-HCV reactive samples were analyzed by RT-PCR and genotyped. The overall seroprevalence of HCV infection was 4.8% (95%CI: 3.4 to 6.8%). Furthermore, the prevalence was higher in: men, injecting drug users, tattooed persons, those who were more than 50 years old, individuals who have been arrested multiple times, people with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hepatitis C; Genotype; Polymerase chain reaction; Epidemiology; Prisoners.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992011000200013
Imagem não selecionada

Imprime registro no formato completo
Trypanosomatids in dogs belonging to individuals with chronic Chagas’ disease living in Botucatu town and surrounding region, São Paulo State, Brazil J. Venom. Anim. Toxins incl. Trop. Dis.
Lucheis,S. B.; Da Silva,A. V.; Araújo Jr,J. P.; Langoni,H.; Meira,D. A.; Marcondes-Machado,J..
Among domestic animals, dogs are considered to be the major reservoirs of trypanosomatids and, due to their proximity to man, the presence of these parasites in dogs is an alert to actions aiming at triatomine control. Fifty dogs (26 males and 24 females), aged from 2 months to 15 years, belonging to 30 chronic Chagas’ disease individuals from 15 different municipalities in the western region of São Paulo State, Brazil, were subjected to blood collection for the following tests: artificial xenodiagnosis, blood culture, and Polymerase Chain Reaction (PCR). Forty-three (86%) out of 50 dogs were positive to at least one of the tests performed; 34 (68%) were positive to xenodiagnosis, 30 (60%) to blood culture, and 25 (50%) to PCR for T. cruzi and/or T....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Trypanosoma cruzi; T. rangeli; Dog; Xenodiagnosis; Blood culture; Polymerase chain reaction.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992005000400009
Imagem não selecionada

Imprime registro no formato completo
Sequence analysis of the Rhop-3 gene of Plasmodium berghei and P. chabaudi, reactivity of Rhop-3 protein within isolated rhoptries and binding of Rhop-3 to mouse erythrocytes OAK
Sam-Yellowe, Tobili Y.; Wang, Tongmin; Fujioka, Hisashi; Drazba, Judith A.; Alkawa, Masamichi; Brochak, William E..
Palavras-chave: Apicomplexa; Erytrocyte binding protein; Merozoite invasion; Plasmodium berghei; P. chabaudi; P. falciparum; P. yoelii; Polymerase chain reaction; Rhoptries; Rhop-3; Immunoelectron microscopy.
Ano: 2000 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/337
Imagem não selecionada

Imprime registro no formato completo
Allelic Analysis of Immunodominant Major Piroplasm Surface Protein Genes of Benign Theileria Parasites in Australian Cattle OAK
Kubota, Shuichi; Kakuda, Tsutomu; Sugimoto, Chihiro; Waltisbuhl, David; Onuma, Misao.
Palavras-chave: Allele; Benign Theileria; Piroplasm surface antigen; Polymerase chain reaction.
Ano: 1996 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/240
Imagem não selecionada

Imprime registro no formato completo
Epidemiological survey of Babesia gibsoni infection in dogs in eastern Japan OAK
Miyama, Takako; Sakata, Yoshimi; Shimada, Yojiro; Ogino, Shoji; Watanabe, Malaika; Itamoto, Kazuhito; Okuda, Masaru; Verdida, Rodolfo A.; Xuan, Xuenan; Nagasawa, Hideyuki; Inokuma, Hisashi.
To determine the distribution of Babesia gibsoni infection in dogs in the eastern part of Japan, an epidemiological survey of dogs suspected of having B. gibsoni infection was attempted using the polymerase chain reaction (PCR) and enzyme-linked immunosorbent assay (ELISA). Thirty-five of 115 such dogs (30.4%) were positive by PCR and/or ELISA. The 35 positive dogs consisted of 28 Tosa dogs, 4 American Pit Bull Terriers, and 3 mongrel dogs in Aomori, Fukushima, Ibaraki, Gunma, Chiba, Tokyo, Kanagawa, and Nagano Prefectures. The positive dogs had a significantly lower rate of tick exposure and a higher rate of bites by other dogs. Twenty-two of 35 B. gibsoni-positive dogs were infected with hemoplasma, and the rate of infection was significantly higher than...
Palavras-chave: Babesia gibsoni; Eastern Japan; Enzyme-linked immunosorbent assay; Hemoplasma; Polymerase chain reaction.
Ano: 2005 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/924
Imagem não selecionada

Imprime registro no formato completo
Experimental infection of dogs with Babesia microti OAK
Ohmori, T.; Uetsuka, K.; Nunoya, T.
Palavras-chave: Babesia microti; Dog; Experimental infection; Polymerase chain reaction; Indirect immunofluorescence test.
Ano: 2011 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3132
Imagem não selecionada

Imprime registro no formato completo
Diagnosis of Trypanosoma evansi by the polymerase chain reaction (PCR) OAK
Donelson, J. E.; Artama, W. T..
Palavras-chave: Trypanosoma evansi; Diagnosis; Polymerase chain reaction.
Ano: 1998 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/300
Imagem não selecionada

Imprime registro no formato completo
Identification of Eimeria mitis and Eimeria praecox in broiler feces using polymerase chain reaction Rev. Bras. Ciênc. Avic.
Meireles,MV; Roberto,LO; Riera,RF.
There are few reports concerning the epidemiology of Eimeria praecox and Eimeria mitis in Brazil. In the present experiment, the polymerase chain reaction (PCR) was used to identify these species in 156 samples of broiler chicken feces from several Brazilian states and the Federal District. Oocysts present in feces samples were purified by sodium chloride flotation followed by addition of DNAzol reagent (Invitrogen®) for extraction of genomic DNA. DNA was precipitated and stored following DNAzol reagent manufacture's instructions. The primers and PCR conditions were as described by Schnitzler et al. (1999). In the 156 field samples analyzed by PCR, 70 and 45 were positive for E. praecox and E. mitis, respectively. In this study we have shown that DNA...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diagnosis; Eimeria mitis; Eimeria praecox; Epidemiology; Polymerase chain reaction.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000400010
Registros recuperados: 77
Primeira ... 1234 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional