11 results on '"Dos Santos EAR"'
Search Results
2. Effect of ginger essential oil and 6-gingerol on a multispecies biofilm of Listeria monocytogenes, Salmonella Typhimurium, and Pseudomonas aeruginosa.
- Author
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Dos Santos EAR, Tadielo LE, Schmiedt JA, Possebon FS, Pereira MO, Pereira JG, and Dos Santos Bersot L
- Subjects
- Salmonella typhimurium, Pseudomonas aeruginosa, Colony Count, Microbial, Biofilms, Zingiber officinale, Oils, Volatile pharmacology, Listeria monocytogenes, Anti-Infective Agents pharmacology
- Abstract
The objective of this study was to evaluate the potential antimicrobial and antibiofilm effect of ginger essential oil (GEO) and 6-gingerol on a multispecies biofilm formed by Listeria monocytogenes, Salmonella Typhimurium, and Pseudomonas aeruginosa on a polypropylene surface. The minimum inhibitory concentration concentrations obtained for GEO were 100 and 50 mg/mL and for 6-gingerol 1.25 mg/mL. Sessile cell counts ranged within 5.35-7.35 log CFU/cm
2 in the control biofilm, with the highest sessile growth at 72 h. GEO treatments acted on the total population regardless of concentration at 1 and 48 h. L. monocytogenes behaved similarly to the total population, showing GEO action at 1 h and keeping the same pattern at 48, 72, and 96 h. Better action on S. Typhimurium was obtained at times of 1, 72, and 96 h. P. aeruginosa showed logarithmic reduction only when treated with GEO 50 mg at 24 h. As for 6-gingerol, in general, there was no significant action (p > 0.05) on the evaluated sessile cells. GEO showed antimicrobial activity against L. monocytogenes, S. Typhimurium, and P. aeruginosa, acting as an inhibitor of biofilm formation. As for 6-gingerol, it was considered a possible antimicrobial agent but without efficacy during biofilm formation., (© 2023. The Author(s) under exclusive licence to Sociedade Brasileira de Microbiologia.)- Published
- 2023
- Full Text
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3. Characterization of microbial ecology, Listeria monocytogenes, and Salmonella sp. on equipment and utensil surfaces in Brazilian poultry, pork, and dairy industries.
- Author
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Tadielo LE, Dos Santos EAR, Possebon FS, Schmiedt JA, Juliano LCB, Cerqueira-Cézar CK, de Oliveira JP, Sampaio ANDCE, Melo PRL, Caron EFF, Pinto JPAN, Bersot LDS, and Pereira JG
- Subjects
- Animals, Swine, Poultry, Food Microbiology, Dairying, Brazil, RNA, Ribosomal, 16S, Escherichia coli, Salmonella genetics, Listeria monocytogenes, Pork Meat, Red Meat
- Abstract
This study aimed to evaluate the level of counting by indicator microorganisms, identify the microbial ecology, detect Listeria monocytogenes and Salmonella sp., and determine the presence of virulence genes and biofilm formation. A total of 480 samples were collected from the surfaces of the equipment and utensils using sterile swabs for the detection of L. monocytogenes and Salmonella sp. and counting mesophilic aerobes, Enterobacteriaceae, Escherichia coli, and Pseudomonas sp. The microbial ecology was evaluated by sequencing the 16S rRNA gene. Genes for virulence and biofilm formation were analyzed and adhesion capacity was evaluated for L. monocytogenes and Salmonella sp. The mesophilic aerobe count was the highest in the dairy processing facility, followed by the pork and poultry slaughterhouses. L. monocytogenes was detected in all facilities, with the highest detection in the pork slaughterhouse, followed by the poultry and dairy facilities. Salmonella sp. was only detected in the dairy. Isolates of L. monocytogenes and Salmonella sp. showed poor adhesion to polystyrene surfaces, virulence genes, and biofilm formation. The frequent contaminants in the slaughterhouses were Pseudomonas, Acinetobacter, and Aeromonas in poultry, Acinetobacter, Pseudomonas, and Brevundimonas in pork, and Pseudomonas, Kocuria, and Staphylococcus in dairy. Our results provide useful information to understand the microbiological risks associated with contamination., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
- Published
- 2023
- Full Text
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4. Physical activity measured with an accelerometer in dogs following extracapsular stabilisation to treat cranial cruciate ligament rupture.
- Author
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Schuster LAH, de Carvalho AL, Dos Santos EAR, de Oliveira MP, Camacho-Rozo CA, Raposo Monteiro E, Ferreira MP, and Alievi MM
- Subjects
- Dogs, Animals, Anterior Cruciate Ligament surgery, Lameness, Animal surgery, Quality of Life, Stifle surgery, Pain veterinary, Accelerometry veterinary, Rupture surgery, Rupture veterinary, Physical Conditioning, Animal, Dog Diseases surgery, Anterior Cruciate Ligament Injuries surgery, Anterior Cruciate Ligament Injuries veterinary
- Abstract
Objectives: To quantify the physical activity levels in dogs with cranial cruciate ligament rupture before and after lateral fabellar suture stabilisation surgery., Materials and Methods: Seventeen dogs (mean weight, 12.3±5.1 kg) with unilateral cranial cruciate ligament rupture were fitted with an accelerometer for seven consecutive days at four different time points: before surgery (T0), one (T1), three (T3) and six (T6) months after surgery. The total activity and times spent in sedentary activity, light to moderate activity and vigorous activity were recorded by the accelerometer, and preoperative and postoperative data were compared. At all time points, dogs underwent clinical evaluations (lameness score, stifle pain score and thigh circumference) and their owners were asked to respond to questionnaires to subjectively score the physical activity and quality of life of the dogs., Results: At the four time points, the dogs spent between 21.2 and 21.4 hours on sedentary behaviour, 2.3 and 2.5 hours performing light to moderate activity, and 13 to 15 minutes performing vigorous activity. There was no increase in physical activity variables or decrease in sedentary behaviour over time. Lameness scores, pain score and dogs' quality of life improved significantly during the postoperative period. At T6, 17 (100%) of 17 dogs presented no lameness, 16 (94%) of 17 dogs presented no stifle pain, 16 (94%) of 17 owners rated the quality of life as very good and excellent, and 16 (100%) of 16 owners reported a total return to normal activity levels., Clinical Significance: The clinical recovery after extracapsular stabilisation of the stifle joint was not associated with a spontaneous increase in physical activity or a decrease in sedentary behaviour., (© 2023 British Small Animal Veterinary Association.)
- Published
- 2023
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5. Residues of Veterinary Drugs in Animal Products Commercialized in the Border Region of Brazil, Argentina, and Uruguay.
- Author
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Soares VM, Pereira JG, Barreto F, Jank L, Rau RB, Dias Ribeiro CB, Dos Santos Castilhos T, Tomaszewski CA, Hillesheim DR, Mondadori RG, Tadielo LE, Dos Santos EAR, da Cruz Encide Sampaio AN, Cerqueira-Cézar CK, Duval EH, and da Silva WP
- Subjects
- Animals, Anti-Bacterial Agents analysis, Antiparasitic Agents, Argentina, Brazil, Cattle, Doxycycline, Food Contamination, Humans, Ivermectin, Uruguay, Anti-Infective Agents, Drug Residues analysis, Veterinary Drugs
- Abstract
Abstract: The traffic in international animal products can become a public health hazard when legal import sanitary procedures are not followed. In Brazil, due to its extensive border area, the importation of animal products is a common practice in many areas, especially in Rio Grande do Sul, a state that borders Argentina and Uruguay. The objective of this study was to evaluate the presence of veterinary drug residues (antibiotics and antiparasitics) in animal products consumed in Rio Grande do Sul. The presence of residues of veterinary antibiotics and antiparasitics was assessed in 189 meat (beef, pork, and chicken), processed dairy, and meat product samples bought in Argentina (n = 90) and Uruguay (n = 99). Residues of these veterinary drugs were detected in 50 (26.45%) of the samples; 28 samples (14.81%) had antibiotic residues, and 22 samples (11.64%) had antiparasitic residues. Of the 50 positive samples, 40% (15 from Argentina and 5 from Uruguay) had residues above the maximum residue limits (MRLs). Of these 20 samples, 12 had antiparasitic residues above the MRLs (11 beef samples had ivermectin and 1 pork sample had ivermectin and doramectin) and 8 had antibiotic residues above the MRLs (2 pork and 2 sausage samples had doxycycline, 2 cheese samples had doxycycline and chlortetracycline, 1 poultry meat sample had chloramphenicol, and 1 cheese sample had monensin). Because of the potential toxic effects on humans and the potential for pathogens to develop antibiotic resistance, the presence of these residues above the MRLs is a potential risk to public health. The negative impact of consumption of imported animal products can be reduced by implementation of an effective surveillance system and educational campaigns for the general population., (Copyright ©, International Association for Food Protection.)
- Published
- 2022
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6. Detection of adenovirus, rotavirus, and hepatitis E virus in meat cuts marketed in Uruguaiana, Rio Grande do Sul, Brazil.
- Author
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Soares VM, Dos Santos EAR, Tadielo LE, Cerqueira-Cézar CK, da Cruz Encide Sampaio AN, Eisen AKA, de Oliveira KG, Padilha MB, de Moraes Guerra ME, Gasparetto R, Brum MCS, Traesel CK, Henzel A, Spilki FR, and Pereira JG
- Abstract
The aim of this study was to investigate the presence of adenovirus (AdV), rotavirus (RV), and hepatitis E virus (HEV) in beef, pork, and chicken meat cuts in retail trade in the city of Uruguaiana, RS, Brazil. A total of 131 meat products were collected (beef, n = 55; chicken, n = 47; pork, n = 29) from 18 commercial establishments (supermarkets, n = 7; butchers, n = 7; markets/grocery stores, n = 4). All samples were evaluated for AdV, RV, and HEV. The genomes of RV and AdV were identified in 29% ( n = 38) and 5.34% ( n = 7) of the samples, respectively. HEV was not identified in any of the samples. Chicken cuts had a higher frequency of AdV and RV isolates compared to beef and pork ( P < 0.05). Among the categories of commercial establishments evaluated, all revealed at least one positive sample for AdV and RV; however, supermarkets showed a higher frequency of RV than others ( P < 0.05). The genetic material of AdV and RV was identified simultaneously in 2.29% ( n = 3) of samples from supermarkets ( n = 2) and grocery stores ( n = 1). This is the first report on detection of enteric viruses in meat cuts in the western region of the state of Rio Grande do Sul, Brazil, and the presence of AdV and RV in these products may indicate flaws during the process of handling these foods, especially in places where commercialization provides important public health issues., Competing Interests: The authors declare that they have no conflicts of interest., (© 2022 The Authors.)
- Published
- 2022
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7. Presence of Listeria monocytogenes and Salmonella spp. in lamb meat commercialized in Uruguaiana, Rio Grande do Sul, Brazil.
- Author
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Soares VM, Sampaio ANDCE, Dos Santos EAR, Tadielo LE, and Pereira JG
- Abstract
The aim of this study was to evaluate the hygienic-sanitary quality of lamb meat sold in the city of Uruguaiana, Rio Grande do Sul (RS) by counting the indicator microorganisms and detecting pathogens such as Salmonella spp. and Listeria monocytogenes . Thirty-nine lamb meat samples were collected from 10 commercial establishments in Uruguaiana. The samples were subjected to counts of aerobic mesophilic microorganisms and enterobacteria, and to the detection of Salmonella spp. and L. monocytogenes , all following standard methods. The average counts of mesophilic microorganisms and enterobacteria were 6.08 log CFU/g (minimum 4.07 and max 6.87) and 4.73 log CFU/g (minimum 0 and max 5.88), respectively. For pathogens, L. monocytogenes was isolated from five samples (12.82%), with three samples in the same location. Only two samples (5.13%) were positive for Salmonella spp. The results demonstrated unsatisfactory hygienic-sanitary conditions because high counts of pathogens such as Salmonella spp. and L. monocytogenes . The counts of enterobacteria showed poor hygiene conditions during the various stages of production. The results also indicated fecal contamination, as Salmonella spp. and L. monocytogenes are present in the intestinal tract of both humans and animals. The high count of mesophilic microorganisms obtained could be owing to contaminated raw material or unsatisfactory processing, including unsanitary conditions and the inappropriate use of binomial time/temperature during storage., Competing Interests: Conflict of interests: No conflict of interests declared concerning the publication of this article., (Copyright Soares et al.)
- Published
- 2021
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8. Fibular and metatarsal osteosynthesis in a southern brown howler monkey (Alouatta guariba clamitans).
- Author
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Surita LE, Nicknich D, Dos Santos EAR, Picoli R, Monteiro ER, and Alievi MM
- Subjects
- Alouatta physiology, Animals, Fibula physiology, Fibula surgery, Fractures, Bone surgery, Male, Metatarsus physiology, Metatarsus surgery, Alouatta injuries, Fibula injuries, Fracture Healing, Fractures, Bone veterinary, Metatarsus injuries
- Abstract
Here we describe a successful surgical management of a distal fibular fracture combined with a tarsocrural luxation and multiple metatarsal fractures in the left foot of a southern brown howler monkey (Alouatta guariba clamitans). We achieved satisfactory outcome by applying intramedullary pinning for each of the bone fractures and closed reduction of joint luxation-kept in place only by bone alignment, without further ligament reconstruction. Bone healing occurred uneventfully within eight weeks and the monkey's foot regained its normal function. Therefore, we could properly release the patient back into the wild., (© 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2021
- Full Text
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9. Comparison of midazolam and butorphanol combined with ketamine or dexmedetomidine for chemical restraint in howler monkeys (Alouatta guariba clamitans) for vasectomy.
- Author
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Fagundes N, Castro ML, Silva RA, De Lima MPA, Braga CS, Dos Santos EAR, Oliveira MA, Mattoso CRS, Pimenta ELM, and Beier SL
- Subjects
- Alouatta surgery, Analgesia instrumentation, Drug Combinations, Vasectomy instrumentation, Alouatta physiology, Analgesia veterinary, Butorphanol therapeutic use, Dexmedetomidine therapeutic use, Ketamine therapeutic use, Midazolam therapeutic use, Vasectomy veterinary
- Abstract
Background: This study evaluated and compared cardiorespiratory and blood gas parameters, as well as sedation, analgesia and recovery of two protocols: ketamine (10 mg/kg) or dexmedetomidine (10 μg/kg), with midazolam (0.5 mg/kg) and butorphanol (0.3 mg/kg), IM (KBM and DBM, respectively) in brown howler monkeys (Alouatta guariba clamitans)., Material and Methods: Twelve brown howler monkeys were selected in two groups and evaluated for cardiorespiratory parameters and sedation, from 5-30 minutes after latency. Blood gas and arterial lactate were taken at 5 and 30 minutes. In the end, time and quality of recovery were evaluated., Results: The HR in DBM group was significantly lower at all times. The sedation score was higher in DBM. Recovery in DBM was faster. All animals had moderate hypoxaemia., Conclusion: Both protocols produce satisfactory anaesthesia and analgesia, but DBM provides deeper sedation with faster recovery. Oxygen supplementation is recommended in both due to hypoxaemia., (© 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.)
- Published
- 2020
- Full Text
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10. Hepatitis A Virus, Hepatitis E Virus, and Rotavirus in Foods of Animal Origin Traded at the Borders of Brazil, Argentina, and Uruguay.
- Author
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Pereira JG, Soares VM, de Souza FG, Tadielo LE, Dos Santos EAR, Brum MCS, Henzel A, Duval EH, Spilki FR, and da Silva WP
- Subjects
- Animals, Argentina, Brazil, Hepatitis A virus genetics, Hepatitis E virus genetics, Humans, Rotavirus genetics, Uruguay, Food Contamination, Hepatitis A virus isolation & purification, Hepatitis E virus isolation & purification, Meat virology, Meat Products virology, Rotavirus isolation & purification
- Abstract
The aim of this study was to investigate hepatitis A virus (HAV), hepatitis E (HEV), and rotavirus (RV) in fresh and processed meat traded on the border of Brazil with Argentina and Uruguay. In total, 159 samples of raw and processed foods of animal origin were collected in Paso de los Libres, Argentina (n = 53 raw meat, n = 24 processed meat) and Rivera, Uruguay (n = 55 raw meat, n = 18 processed meat), or were seized by the Brazilian International Agricultural Surveillance System-VIGIAGRO (Brazil-Argentina border) (n = 8 raw meat, n = 1 bush meat). All samples were tested for the presence of HAV, HEV, and RV genomes. HAV genes were detected in 18.23% of samples and RV genes in 23.89%. No HEV-positive samples were detected. HAV was also detected in two of the VIGIAGRO samples. Processed meats from Argentina and Uruguay had a higher rate of HAV and RV than raw meat (P > 0.05). The median HAV in the Argentinian and Uruguayan samples was 6.9 × 10
4 and 3.5 × 103 copies/g, respectively. The presence of RV viral genes in raw meats from Argentina was significant, and this was not observed in processed meats. The presence of HAV and RV genes in a significant portion of products from Argentina and Uruguay is a potential source of human infection. This also indicates precarious conditions of acquisition, processing, and manipulation, which could be improved by improved regulation of food across borders.- Published
- 2018
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11. Foods introduced into Brazil through the border with Argentina and Uruguay: Pathogen detection and evaluation of hygienic-sanitary quality.
- Author
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Pereira JG, Soares VM, Tadielo LE, Dos Santos EAR, Lopes GV, da Cruz Payão Pellegrini D, Duval EH, and da Silva WP
- Subjects
- Animals, Argentina, Brazil, Escherichia coli O157 genetics, Escherichia coli O157 isolation & purification, Escherichia coli O157 metabolism, Food Contamination statistics & numerical data, Food Microbiology, Hygiene, Listeria monocytogenes genetics, Listeria monocytogenes isolation & purification, Listeria monocytogenes metabolism, Meat Products microbiology, Quality Control, Salmonella genetics, Salmonella isolation & purification, Salmonella metabolism, Uruguay, Dairy Products microbiology, Meat microbiology
- Abstract
This study aimed to evaluate the presence of pathogens in, and the hygienic-sanitary quality of, commercialized foods of animal origin at the international border region of Rio Grande do Sul, Brazil. In total, 270 samples of raw and processed foods of animal origin were collected in Paso de los Libres, Argentina (n = 65 raw meat, n = 47 dairy products, n = 28 processed meat) and Rivera, Uruguay (n = 60 raw meat, n = 31 dairy products, n = 29 processed meat), or were seized by the Brazilian International Agricultural Surveillance System (Brazil-Argentina border) (n = 9 raw meat, n = 1 bush meat). The samples were subjected to the enumeration of aerobic mesophilic bacteria, enterobacteria, and coagulase-positive staphylococci, and were tested for Salmonella spp., Listeria monocytogenes, and Escherichia coli O157:H7. The virulence genes for Salmonella spp. (hilA, invA, spvC, pefA, and sefA), L. monocytogenes (prs, inlA, inlC, and inlJ) and E. coli O157:H7 (uspA, eae, rfb
O157 , fliCH7 , stx1, stx2, and hlyA) were investigated using PCR assays. Raw products showed higher counts of aerobic mesophiles and enterobacteria compared to processed products (P < 0.05). There were no significant differences in aerobic mesophile or in enterobacterial counts between identical products according to origin (Argentina vs. Uruguay, P > 0.05). Escherichia coli O157:H7 was not detected in any of the samples tested. Salmonella spp. was detected in six (8%) raw products from Argentina. Listeria monocytogenes was isolated from five (6.66%) raw products originating in Argentina and 20 (16.66%) raw products from Uruguay. All 52 E. coli isolates carried the uspA gene, but only one carried the eae gene. The rfbO157 , fliCH7 , stx1, stx2, and hlyA genes were not detected. All Salmonella spp. isolates carried hilA and invA genes, but spvC, pefA, and sefA were not found. All L. monocytogenes isolates carried the prs gene; however, inlA, inlC, and inlJ genes were found in 20% of the isolates from Argentina and 95% of those from Uruguay. To our knowledge, this is the first microbiological study into the hygienic-sanitary quality of animal products in Brazil's land border region. Salmonella spp. and L. monocytogenes were detected in products of animal origin, constituting a public health concern and emphasizing the need for an active surveillance system to reduce the risk of foodborne pathogen introduction into Brazil., (Copyright © 2018 Elsevier B.V. All rights reserved.)- Published
- 2018
- Full Text
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