Genetic Contamination
Mostrando 1-12 de 104 artigos, teses e dissertações.
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1. Detection of virulence genes in Salmonella Heidelberg isolated from chicken carcasses
ABSTRACT During the last years, Brazilian government control programs have detected an increase of Salmonella Heidelberg in poultry slaughterhouses a condition that poses a threat to human health However, the reasons remain unclear. Differences in genetic virulence profiles may be a possible justification. In addition, effective control of Salmonella is rela
Rev. Inst. Med. trop. S. Paulo. Publicado em: 22/07/2019
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2. Micropropagation, plantlets production estimation and ISSR marker-based genetic fidelity analysis of Guadua magna and G. angustifólia
RESUMO Os bambus Guadua magna e G. angustifolia têm sido propagados vegetativamente quase que exclusivamente por técnicas convencionais de propagação. Objetivou-se micropropagar, estimar a produção de mudas e analisar a fidelidade genética de G. magna e G. angustifolia por marcadores moleculares ISSR. Plantas matrizes de ambas as espécies foram culti
Pesqui. Agropecu. Trop.. Publicado em: 13/05/2019
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3. Analysis of Fusarium ear rot and fumonisin contamination in testcrosses of a maize biparental population
Abstract Fusarium ear rot (FER) negatively affects maize production worldwide and poses a serious threat to human health for producing mycotoxins. The objectives of our study were to assess the factors affecting FER and fumonisin contamination in testcrosses of a maize population. In the trials, seeds of 191 testcrosses of IBMSyn4, 11 checks and 2 replicatio
Crop Breed. Appl. Biotechnol.. Publicado em: 11/04/2019
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4. Good hygienic practices and identification of contamination sources in Hotel Food and Beverage sector
Abstract This study aimed to evaluate the application of good practices in hotel restaurants in Southern Brazil, relate these practices to the microbiological quality of the food offered, in addition to identifying contamination sources. The food and beverage sector of four hotels was evaluated by means of a checklist based on the Resolution 216/2014 of Ag�
Food Sci. Technol. Publicado em: 26/07/2018
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5. Dynamics of the seasonal airborne propagation of Staphylococcus aureus in academic dental clinics
Abstract Objective Staphylococcus aureus strains can be disseminated during dental treatments and occasionally lead to the contamination and infection of patients and dentists, which is an important public health problem. The dynamics of the airborne propagation and the genetic diversity of S. aureus isolated in an academic dental clinic environment were in
J. Appl. Oral Sci.. Publicado em: 05/04/2018
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6. Occurrence of toxigenic Aspergillus flavus in commercial Bulgur wheat
Abstract Aflatoxins are mutagenic, carcinogenic, and teratogenic mycotoxins. The objective of this work was to study the presence of aflatoxigenic Aspergillus in commercial Bulgur wheat in the city of Maringá, Paraná, Brazil. Thirty samples of commercial Bulgur wheat, acquired in the period of August 2011 to January 2012, were evaluated. The enumeration an
Food Sci. Technol. Publicado em: 19/01/2017
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7. POTENTIAL CROSS-CONTAMINATION OF SIMILAR Giardia duodenalis ASSEMBLAGE IN CHILDREN AND PET DOGS IN SOUTHERN BRAZIL, AS DETERMINED BY PCR-RFLP
SUMMARY Giardia duodenalis is an enteric parasite that has distinct genetic groups. Human infections are mainly caused by assemblages A and B, although sporadic infections by assemblages C and D have also been reported. Animals can be infected by a wide range of assemblages (A to H). The aim of this study is to identify the assemblages and sub-assemblages of
Rev. Inst. Med. trop. S. Paulo. Publicado em: 22/09/2016
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8. Characterization of the variable region in the class 1 integron of antimicrobial-resistant Escherichia coli isolated from surface water
Abstract Fecal bacteria are considered to be a potential reservoir of antimicrobial resistance genes in the aquatic environment and could horizontally transfer these genes to autochthonous bacteria when carried on transferable and/or mobile genetic elements. Such circulation of resistance genes constitutes a latent public health hazard. The aim of this study
Braz. J. Microbiol.. Publicado em: 2016-06
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9. Molecular characterization of microbial contaminants isolated from Umbilical Cord Blood Units for transplant
ABSTRACT Disposal of Umbilical Cord Blood Units due to microbial contamination is a major problem in Cord Blood Banks worldwide as it reduces the number of units available for transplantation. Additionally, economic losses are generated as result of resources and infrastructure used to obtain such units. Umbilical Cord Blood Units that showed initial microbi
Braz J Infect Dis. Publicado em: 2015-12
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10. Molecular characterisation of
Aspergillus flavus isolates from peanut fields in India using AFLPAflatoxin contamination of peanut, due to infection by
Aspergillus flavus , is a major problem of rain-fed agriculture in India. In the present study, molecular characterisation of 187Aspergillus flavus isolates, which were sampled from the peanut fields of Gujarat state in India, was performed using AFLP markers. On a poBraz. J. Microbiol.. Publicado em: 21/07/2015
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11. Salmonella Alachua: causative agent of a foodborne disease outbreak
Objectives: The aim of this study is to report the occurrence of the first outbreak of food poisoning caused by SalmonellaAlachua in Brazil, as well as the antimicrobial susceptibility and the genetic relatedness of SalmonellaAlachua strains isolated from clinical and food samples.Material and methods: To elucidate the outbreak, an epidemiological investigat
Braz J Infect Dis. Publicado em: 2015-06
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12. First record of partial albinism in two catfish species of Genidens (Siluriformes: Ariidae) in an estuary of Southern Brazil
This study reports the first occurrence of partial albinism in two species of Ariidae: Genidens barbus and Genidens planifrons from an estuary of Southern Brazil. Possible causes of the simultaneous occurrence of three specimens with partial albinism are discussed, including random genetic alterations, chronic contamination effects and small effective popula
Braz. arch. biol. technol.. Publicado em: 2013-04