Consulta: creatorFacets:"Pizzolitto,Antonio Carlos"
Registros recuperados: 4
Data/hora: 01/06/2024 03:38:08

Detection of mixed microbial biofilms on central venous catheters removed from Intensive care Unit Patients
Provedor de dados: 58
Autores: Storti,Anisio; Pizzolitto,Antonio Carlos; Pizzolitto,Elisabeth Loshchagin.
Central venous catheters from intensive care unit patients were subjected to microbiological methods (semiquantitative culture) and scanning electron microscopy in order to assess microbial attachment and correlate it with blood cultures. During the period of the survey, 59 patients with inserted central venous catheters were studied. The type of catheter used was nontunneled, noncuffed, single lumen, made of polyurethane. Blood samples for cultures were collected at the moment of catheter removal. Data on the patient's age, gender, catheter insertion site, and duration of catheterization were also obtained. From 63 catheters tips analysed, 30 (47.6%) showed microbial colonization. Infection proved to be more prevalent in 26 (41.3%) patients with catheters...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm; Bacteremia-catheter; Central venous catheter; Microorganisms attachment.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000300013

Activity of disinfectants against foodborne pathogens in suspension and adhered to stainless steel surfaces
Provedor de dados: 58
Autores: Cabeça,Tatiane Karen; Pizzolitto,Antonio Carlos; Pizzolitto,Elisabeth Loshchagin.
The purpose of this study was to investigate and compare the efficacy of various disinfectants on planktonic cells and biofilm cells of Listeria monocytogenes, Staphylococcus aureus and Escherichia coli. Numbers of viable biofilm cells decreased after treatment with all tested disinfectants (iodine, biguanide, quaternary ammonium compounds, peracetic acid and sodium hypochlorite). Sodium hypochlorite was the most effective disinfectant against biofilm cells, while biguanide was the least effective. Scanning electron microscopy observations revealed that cells adhered on stainless steel surface after treatment with the disinfectants. No viable planktonic cells were observed after treatment with the same disinfectants. Based on our findings, we concluded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm cells; Plancktonic cells; Disinfectants.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000300038

Stpahylococcus aureus biofilms on central venous haemodialysis catheters
Provedor de dados: 58
Autores: Aoki,Elisabeth Eyko; Pizzolitto,Antonio Carlos; Garcia,Lourdes Botelho; Pizzolitto,Elisabeth Loshchagin.
Biofilm bacterial infections are common in patients undergoing treatment with haemodialysis. This study involved 16 patients (7 males, 9 females; ages from 22 to 81 with an average age of 50) who had had a total of 25 temporary haemodialysis polyurethane catheter insertions into the subclavian vein (22 dual-lumen and 3 triple-lumen). The catheters remained in place from 3 to 91 days, on an average of 47 days. The reasons for catheter removal were: bad functioning (44%), suspicion of catheter-related infection (20%), availability of permanent access (16%), accidental removal (12%), signs and symptoms of infection at the site of catheter insertion (4%), and exogenous contamination (4%). Positive tip cultures were observed on seven of the catheters (28%),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biofilm; Catheter in haemodialysis; Central venous catheter; Catheter-related infections.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000400007

Chemical and microbiological evaluation of the internal surfaces of aluminum tubes both unlined and lined with epoxi resin by means of the stereoscope and scanning electron microscope
Provedor de dados: 58
Autores: Pizzolitto,Elisabeth Loshchagin; Pizzolitto,Antonio Carlos; Pozetti,Gilberto Luiz.
The internal surfaces of aluminum tubes, both unlined and lined with epoxy resin, which are used for packaged medicines such as creams, ointments, gels, etc., were evaluated chemically, and microbiologically with regard to microorganism adherence. Proof of porosity of the unlined aluminum surface and lined with epoxy resin, and the resistance to removal of the resin were observed using a scanning electron microscope and a stereoscope, with a digitalized image system. To evaluate the microorganisms adherence to the aluminum surface, unlined and lined with epoxy resin, sterilized disks (10mm in diameter) were immersed in Mueller Hinton Broth and placed in tubes of polypropylene with screw caps. The liquid culture medium was then inoculated with suspensions...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial adherence; Biofilm; Biofouling; Aluminum packaging.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822001000400017