خيارات البحث
النتائج 691 - 700 من 706
<i>Staphylococcus pseudintermedius </i>multirresistente isolado do cão: relato de caso
2017
Juliana Aizawa | Antonio Francisco de Souza-Filho | Adriana Cortez | Carla Gasparotto Chande Vasconcelos | Janaina Biotto | Marcos Bryan Heinemann
O potencial zoonótico de bactérias multirresistentes é uma preocupação global e os animais de companhia têm sido implicados na disseminação de bactérias resistentes; assim, é importante a vigilância, pois já existem relatos de transmissão destas bactérias do cão para o homem e vice-versa. Um cão, sem raça definida e de cinco anos de idade, foi atendido na cidade de Botucatu, São Paulo, Brasil, apresentando urolitíase obstrutiva de estruvita recorrente há um ano e meio. Na urocultura do animal foi isolada uma estirpe de Staphylococcus spp. multirresistente; o tratamento com vancomicina possibilitou acura clínica. A estirpe de Staphylococcus spp. isolada foi identificada molecularmente como S. pseudintermedius e nela foi identificada a presença do gene mecA, o principal responsável por S. pseuidintermedius resistente à meticilina (MRSP), e que é frequentemente resistente à múltiplos antimicrobianos. As hipóteses para este caso clínico são a transmissão do homem para o animal, pois o tutor era um médico intensivista, ou que a própria bactéria fazia parte da microbiota do animal e, devido a outros fatores como estresse e doença urinária obstrutiva, abriu-se uma porta de entrada para a infecção pelo S. pseudintermedius. Mais estudos são necessários para a elucidação da transmissão de bactérias multirresistentes entre animais de companhia e o ser humano.
اظهر المزيد [+] اقل [-]Effects of topical application of pure and ozonized andiroba oil on experimentally induced wounds in horses
2017
Anderson Luiz Araujo | Fernanda Almeida Teixeira | Tracy Ferreira Lacerda | Mayra Cunha Flecher | Vinicius Ricardo Cuña Souza | Clarisse Simões Coelho
The aim of this study was to evaluate clinical and histopathological aspects of topical application of pure and ozonized andiroba oil (Carapa guianensis Aublet.) on the healing process of wounds of healthy horses. Eight 6.25-cm2 wounds were surgically produced on each horse, cranial to the sacrum, being four wounds on each side of the lumbar region. In three animals, left side was used for macroscopic observations and area measurement and right side was used for histopathological analysis. For the other two animals, evaluations were inverted. Beginning of the topical treatment occurred 12 hours after surgical induction of the injuries and was maintained daily until complete healing of the wounds, using sequentially and bilaterally in the craniocaudal direction saline solution (GC), ozonized saline solution (GO), pure andiroba oil (GAP) and ozonized andiroba oil (GAO). Randomly, sequence of the treatments was modified. Macroscopic and histopathological analyses were performed at 3, 7, 14, and 21 days after surgery. Completed healing time for all wounds were recorded. A wound contraction of 67.75% for GC, 65.26% for GO, 67.91% for GAP, and 69.84% for GAO were recorded. Histopathologic evaluation revealed that wounds from the GAO and GAP had an advanced epithelialization, fibroblast proliferation and collagen deposition, moderate vascular proliferation, and presence of PMN infiltrate and discrete viewing of MN. It was possible to conclude that all treatments had benefits when comparing to control group and both pure and ozonized andiroba oil can be good options for wound treatment in horses.
اظهر المزيد [+] اقل [-]Brazilian attitudes towards the use of animals in research
2017
Ana Paula Oliveira Souza | Carla Forte Maiolino Molento | Vanessa Carli Bones | Jaqueline Quadros | Catherine Anne Schuppli | Daniel Martin Weary
Little research has examined the views of Latin Americans on the use of animals in research. This study examined the degree to which Brazilians support the use of animals in research and the reasons they put forth to explain their position. Participants were randomly assigned to research scenarios describing the use of animals for biomedical or environmental benefits, and varying in the number of pigs required. Each scenario began by proposing the use of conventional pigs and then advanced to the development and use of genetically modified animals (GMA). A total of 151 quantitative and 307 qualitative answers were analysed. Scenario and number of animals had little effect on support, but opposition increased from 25% to 58% when pigs were used to develop a GM strain for the environmental scenario. Support to use of animals was often conditional upon adequate protection of the animals’ welfare. Participants were less willing to support research on environmental scenario when this involved the creation of GMA, in part because they feared the risk associated with this technology.
اظهر المزيد [+] اقل [-]Human exposure to <i>Salmonella</i> spp from dog food containing raw meat – systematic review
2017
Jéssica Santana dos Reis | Daianne Carneiro de Oliveira Santos | Luciene Barbosa Gomide | Rosana Claudio Silva Ogoshi | Luciano José Pereira | Márcio Gilberto Zangeronimo
Feeding dogs raw meat diets is an increasingly popular trend, and when contaminated with Salmonella they may present a risk to the health of both animals and humans. The present investigation is a systematic review of literature to assess the frequency of raw meat diets for dogs contaminated with Salmonella and whether dogs consuming these diets can eliminate it in their faeces. A search was made using two databases: “Web of Knowledge” and “PubMed” in January 2015. Only studies related to raw food diets and consumption by dogs were included. Thirteen articles were selected after refining the search. In 11 studies microbiological analysis was conducted for Salmonella in diets containing raw meat, so that in four of these studies Salmonella in the faeces was also analysed. In the analysis of 679 raw meat diets 141 diets (20.76%) were contaminated with Salmonella, in which the serotype most commonly found was S. Typhimurium (24.60%). Of the studies that reported the number of dogs that eliminated Salmonella in faeces after consumption of diets containing raw meat, 141 faecal samples were analysed, of which 73 (51.77%) were contaminated with Salmonella and the serotype most commonly found was S. Newport (72.60%). The available data suggest that the owners who feed their animals with diets containing contaminated raw meat, either commercial or homemade, are exposed to risk of Salmonella contamination, either by the manipulation of food or by handling the dog’s stool.
اظهر المزيد [+] اقل [-]Correlation between clinical signs of feline conjunctivitis and molecular detection of felid herpesvirus-1, feline calicivirus, chlamydophila felis and mycoplasma felis in cats from shelters in Rio de Janeiro
2017
Natasha Baumworcel | Ana Maria Barros Soares | Sheila Bruna Silva | Núbia Karla Oliveira Almeida | Tatiana Xavier de Castro
Objectives: To perform molecular diagnosis of microbial agents (FHV-1, FCV, Mycoplasma felis, and Chlamydophila felis) in kittens with conjunctivitis and correlate the clinical signs with clinical severity. Material and Methods: A total of 108 conjunctival swab were collected from kittens without (G1; n = 40) and with (G2; n = 68) clinical signs of conjunctivitis. Animals from G2 group were scored from 1 (mild) to 4 (severe) according to the severity of conjunctivitis. All samples were submitted to PCR and RT-PCR. Results: FHV-1 was detected in 62/108 (57.4%) of samples, FCV in 40/108 (37.0%), M. felis in 11/108 (10.2%) and C. felis in 26/108 (24.1%). Mixed infections were detected in 39/108 (36.1%). In G1, 28/40 (70.0%) were positive for one or more agents, in G2, 58/68 (85.3%) were positive (P = 0.03). In 1, single infections by FHV-1were found in 21/40 (52.5%) samples, FCV in 2/40 (5.0%), C. felis in 1/40 (2.5%), and no pathogens were detected in 12/40 (30%) of samples, while mixed infections accounted for 29/40 (72.5%) of the cases. In G2, single FHV-1 infections were found in 31/68 (45.6%) samples, FCV in 10/68 (14.7 %), M. felis in 2/68 (3.0%) and C. felis also in 2/68 (3.0%), and no pathogens were detected in 10/68 (14.7%) samples, while mixed infections accounted for 36/68 (52.0%) of the cases. They were categorized as grade 1, 20/68 (29.4%), grade 2, 14/68 (20.6%), grade 3, 21/68 (30.9%) and grade 4, 13/68 (19.1%). The presence of FHV-1 and FCV is equally distributed among the four categories. More severe clinical signs, scores 3 and 4, are related to coinfections by C. felis and M. felis. Conclusions: FHV-1, FCV, C. felis and M. felis were identified in feline conjunctivitis. Co-infections are related to more severe cases of conjunctivitis. Molecular diagnosis is helpful to detect asymptomatic carriers and is a rapid and accurate method to determine the pathogen of feline conjunctivitis.
اظهر المزيد [+] اقل [-]Histological aspects of the mucosa of the spermaceti chamber of a dwarf sperm whale
2017
Samira Costa-Silva | Carlos Sacristán | Kátia regina Groch | Angélica María Sánchez-Sarmiento | Laura Reisfeld | Gustavo Dutra | Cristiane Lassálvia | José Luiz Catão-Dias
The sound producing apparatus of the dwarf sperm whale (Kogia sima) presents a complex anatomic structure composed of melon, spermaceti, phonic lips, vocal cap, case, papillae, spermaceti chamber and other airspaces, as well as facial muscles involved in sound production. The spermaceti chamber rests on the caudal portion of the premaxilla, with part of its mucosa covered with spherical/oval-shaped structures (approximately 1 to 2 mm in diameter), compatible with vesicles (previously referred to as “papillae”). Macroscopical examination revealed whitish, firm, widely and irregularly distributed vesicular mucosa on the premaxillary portion of the spermaceti chamber of a K. sima specimen stranded on the coast of Santos (southeastern Brazilian coast). Upon microscopic examination, walls of connective tissue with abundant type I collagen forming vesicles with an internal space or cavity filled with a small amount of eosinophilic substance compatible with mucoproteic fluid were observed. The base of such vesicles presented glands within the connective tissue, probably responsible for fluid production. This study describes the histology of the mucosa of the spermaceti chamber of a K. sima specimen and characterizes the glands associated with fluid production.
اظهر المزيد [+] اقل [-]Power Doppler sonography in the assessment of neovascularization following surgical fracture repair in sheep: case report
2017
Danielle Cristinne Baccarelli | Nicole Fidalgo Paretsis | Cínthia Lima Lhamas | Rodrigo Romero Corrêa | Júlio David Spagnolo | Fernando José Benesi | Giuliana Manchini | André Luis do Valle de Zoppa
Sonography is a safe and non-invasive imaging modality, with the added benefit of providing dynamic images. Power Doppler sonography allows blood vessel identification regardless of flow intensity or direction. A one-year-old Ile de France ewe was admitted to the FMVZ-USP Veterinary Hospital with a complete tibial fracture. The animal was submitted to general inhalation anesthesia and fracture repair using a 3.5 mm locking compression plate. Power Doppler sonography was used to assess neovascularization over the course of the bone healing process. Formation of new vessels was noted between postoperative days 14 and 21; new vessels regressed progressively on subsequent assessments (postoperative days 28 and 35). Power Doppler sonography enabled early detection of newly formed blood vessels at the fracture site. The non-invasive nature of this imaging modality prevented patient stress and provided useful information on the progression of bone healing. Early neovascularization was thought to reflect successful postoperative healing of the tibial fracture described.
اظهر المزيد [+] اقل [-]Production, storage, and destination of seafood industry waste in five states of Brazil
2017
Werner Souza Martins | Lia Ferraz de Arruda Sucasas | Ricardo Borghesi | Marília Oetterer
Large quantities of waste are generated throughout the seafood supply chain. Although this material has a great potential for use (e.g. pharmaceutical industry, animal feed production), if not managed properly it represents an environmental risk. In order to meet the volume, destination, and method of storage of waste of Brazilian seafood supply chain, we got information from 29 companies that have Official Veterinary Inspection (SIF). After the industrialization of seafood only 44% on average of the total raw material is used for human consumption and 59.2% of the unused portion is discarded in landfill.
اظهر المزيد [+] اقل [-]Assessment of different in vitro sperm challenges and in vivo fertility of bovine semen batches
2017
Letícia Zoccolaro Oliveira | Lucas Bernardes Ribeiro | Luiz Gustavo Teodoro da Silva | Clara Slade Oliveira | Erika Aline Ribeiro Dias | Suzane Peres Campanholi | Carla Cristian Campos | Maiana Visoná de Oliveira | Fabio Morato Monteiro
The aim of this work was to submit sperm cells to different laboratory challenges and to compare in vitro results with in vivo semen fertility. Four different batches from the same Brangus bull were used in a timed-AI program of 332 Brangus cows. Each batch (B) was submitted to the following procedure: semen sample was thawed at 36°C for 30 seconds (control). Sperm motility parameters, plasma membrane integrity, sperm morphology, and concentration were assessed. Then, an aliquot of thawed sample was incubated in a water bath at 45°C for 40 min (thermal challenge group; TCG) and another aliquot was centrifuged at 500 xg (Percoll gradient 45%/90%) for 15 min (centrifugation challenge group; CCG). Centrifuged semen was also submitted to another thermal challenge, being incubated (water bath) at 45°C for 40 min (centrifugation + thermal challenge group; CTCG). At the end of each challenge (CCG, TCG, and CTCG), the same laboratory tests used for control group were repeated. The following conception rates (CR) were observed for each batch: B1 = 48.9% (44/90); B2 = 44.2% (23/52); B3 = 55.5% (40/72); B4 = 43.2% (51/118); (p < 0.10). In the lab, B3 presented higher (p ≤ 0.05) progressive motility (PM) than B4 after thawing (control group) and after all sperm challenges (TCG, CCG, and CTCG). However, despite B3 and B4 having demonstrated a similar percentage of plasma membrane integrity (PMI) to the control group (B3 = 66.7 ± 1.3 and B4 = 65.2 ± 3.3), B3 demonstrated higher (P ≤ 0.05) percentage of PMI (37.2 ± 2.5) than B4 (26.7 ± 3.3) after passing through the most stressing in vitro challenge (CTCG). The semen batch presenting the highest resistance to in vitro challenges was the one that presented a trend for higher in vivo fertility, suggesting that submitting semen samples to laboratory challenges may be an interesting alternative for selecting batches with greater field fertility.
اظهر المزيد [+] اقل [-]Effective individual culture system for in vitro production of bovine embryos
2017
Kelly Annes | Carlos Alexandre Soares | Camila Bruna de Lima | Marcella Pecora Milazzotto
A new and effective protocol to culture bovine embryos without coculture and with individualized culture media has been established, which would allow the study of a single embryo’s metabolism. For this purpose, bovine embryos were produced in vitro by standard protocols in three different types of media: KSOM, SOFaa, and KSOM followed by SOFaa at day 2. Presumptive zygotes were divided into six groups: control, cultured in groups (C-KSOM, C-SOFaa, and C-KS), and individual well system (W-KSOM, W-SOFaa, and W-KS). Cleavage and blastocyst rates were assessed on days 2 and 7 respectively. Relative quantification of transcripts related to important metabolic processes (GLUT1, GLUT3, GSK3, SOD1, HSPD1, G6PD) were assessed in C-KS and W-KS blastocysts. Results show that cleavage was significantly higher only in W-KSOM when compared to C-KSOM, while blastocyst rates differ only between C-SOF and W-SOF. All the other comparisons did not present statistical difference. Moreover, gene expression analysis revealed that blastocysts cultured in groups and in the individual well system present similar transcription patterns. Thus, the obtained conclusion was that the individual well system performed could be used as an effective alternative protocol for individual culture of bovine embryos, since the rates are similar to routine group culture.
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