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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Studies on the beta-lactamases of Enterobacter cloacae /

Findell, Charlotte Marie January 1983 (has links)
No description available.
2

Osteotomia pélvica no tratamento das extrofias de bexiga e cloaca

Mendes, Pedro Henrique Barros January 2012 (has links)
Submitted by Luis Guilherme Macena (guilhermelg2004@gmail.com) on 2013-04-17T17:18:40Z No. of bitstreams: 1 TESE - Pedro Henrique Barros Mendes.pdf: 3141935 bytes, checksum: 6eb5e4239b6f1d2ddffabe135050d2d0 (MD5) / Made available in DSpace on 2013-04-17T17:18:40Z (GMT). No. of bitstreams: 1 TESE - Pedro Henrique Barros Mendes.pdf: 3141935 bytes, checksum: 6eb5e4239b6f1d2ddffabe135050d2d0 (MD5) Previous issue date: 2012 / Fundação Oswaldo Cruz. Instituto Fernandes Figueira. Departamento de Ensino. Programa de Pós-Graduação em Saúde da Criança e da Mulher. Rio de Janeiro, RJ, Brasil / Este estudo tem como finalidade principal descrever a experiência adquirida pela equipe de cirurgiões do Departamento de Cirurgia Pediátrica do Instituto Nacional de Saúde da Mulher, da Criança e do Adolescente Fernandes Figueira, da Fundação Oswaldo Cruz (INSMCA- IFF/FIOCRUZ), no período compreendido entre os anos de 2002 e 2007, analisando a utilização da osteotomia pélvica como coadjuvante no processo de reconstrução urológica das extrofias de bexiga e cloaca. Um total de 15 pacientes integrou a amostra, com idades entre quatro meses e sete anos, com idade média de, aproximadamente, 2,3 anos, sendo seis pacientes (40%) do sexo feminino e nove (60%) do sexo masculino. Todos foram submetidos à cirurgia de osteotomia pélvica e, entre eles, oito (53,3%) apresentavam extrofia de bexiga e sete (46,7%) apresentavam extrofia de cloaca. A reconstrução vesical foi realizada no mesmo tempo operatório da osteotomia em três pacientes e, nos outros 12, em um segundo procedimento. Na avaliação da relação entre a diastase corrigida e a deiscência de sutura, não houve nenhum caso de deiscência de sutura no pós operatório imediato ou tardio. Em todos os casos analisados, seja a reconstrução vesical no mesmo ato cirúrgico ou em um segundo tempo operatório, não houve a deiscência da ferida ou qualquer prejuízo à reconstrução urinária. O tempo de uso de fixador externo variou entre 28 e 73, com uma média de 53 dias de uso. Em relação às complicações, seis dos 15 pacientes apresentaram infecção do trajeto dos pinos. O procedimento por nós utilizado se mostrou eficaz e nosso objetivo foi alcançado, pois houve a diminuição da tensão da parede abdominal para o reparo do defeito, com baixa morbidade e complicações pós operatórias similares àquelas registradas na literatura especializada. / The main purpose of this study is to describe the experience obtained by the team of surgeons from the Department of Pediatric Surgery National Institute of Women's Health, Child and Adolescent Fernandes Figueira, Fundação Oswaldo Cruz (INSMCA - IFF / FIOCRUZ), in the period of 2002-2007, analyzing the experience with pelvic osteotomy as an adjunct in the reconstruction process of bladder and cloacal exstrophy. A total of 15 patients composed the sample, aged between four months and seven years, with an average age of approximately 2.3 years. Six patients (40%) were female and nine (60%) were male. All patients underwent surgery for pelvic osteotomy, eight (53.3%) had bladder exstrophy and seven (46.7%) cloacal exstrophy. The bladder reconstruction was performed during the same surgical procedure of osteotomy in three patients and in a second procedure in the other 12 patients. In assessing the relationship between the corrected pubic diastase and suture dehiscence, there were no cases of suture dehiscence in the immediate postoperative or late. In all cases, being the reconstruction performed in the same bladder surgery or in a second time, neither wound dehiscence nor any problem to the urinary reconstruction was observed. The time of use of external fixation ranged between 28 and 73 days, with an average of 53 days. Regarding complications, six of 15 patients had pin tract infection. The procedure used by us was efficient and achieved its objective, by decreasing the tension of the abdominal wall to repair the defect, with low morbidity and postoperative complications similar to those registered in the literature.
3

Ocorrência de leveduras pertencentes ao gênero Cryptococcus em cloaca e inglúvio de papagaios do gênero Amazona aestiva. / Occurrence of yeast belonging to the genus Cryptococcus in cloaca and crop of parrots of the genus Amazona aestiva.

Nascimento, Diana Costa 18 April 2013 (has links)
Realizamos o isolamento de leveduras do complexo Cryptococcus a partir da cloaca e do inglúvio de papagaios do gênero Amazona aestiva. Para a realização das coletas, as aves foram anestesiadas, e em seguida foi realizado lavado do inglúvio e coleta de material da cloaca. As amostras coletadas foram inoculadas em ágar Sabouraud dextrose com cloranfenicol, de onde foram isoladas colônias leveduriformes. Por meio de análises macro e micromorfológicas, os isolados condizentes com as características do gênero Cryptococcus foram submetidos à provas bioquímicas, testes de suscetibilidade aos antifúngicos e pesquisa de exoenzimas. Todos os isolados foram provenientes da cloaca. Dos isolamentos, 90% das cepas corresponderam à espécie C. albidus, e 10% à espécie C. laurentii; 80% foram produtores de fosfolipase e 100% de proteinase. Estes resultados sugerem que não só o ambiente, como também as aves podem ser carreadoras de Cryptococcus albidus. / We performed the isolation of yeasts of Cryptococcus complex from the cloaca and the crop of parrots of the genus Amazona aestiva. To carry out the sampling, the birds were anesthetized to perform a lavage of the crop and the collection of material from the cloaca. The samples were inoculated on Sabouraud dextrose agar with chloramphenicol, which were isolated from yeast colonies. Through macro and micromorphological analysis, isolates consistent with the characteristics of the genus Cryptococcus were subjected to biochemical tests, antifungal susceptibility testing and research exoenzymes. All isolates were from the cloaca. Of the isolates, 90% of the strains corresponded to the species C. albidus, and 10% of the species C. laurentii; 80% of the isolates were producing phospholipase and 100% were producing proteinase. These results suggest that not only environmental but also birds can be Cryptococcus albidus carrier. These results suggest that there is not only an environmental source but also birds can be Cryptococcus albidus carriers
4

Ocorrência de leveduras pertencentes ao gênero Cryptococcus em cloaca e inglúvio de papagaios do gênero Amazona aestiva. / Occurrence of yeast belonging to the genus Cryptococcus in cloaca and crop of parrots of the genus Amazona aestiva.

Diana Costa Nascimento 18 April 2013 (has links)
Realizamos o isolamento de leveduras do complexo Cryptococcus a partir da cloaca e do inglúvio de papagaios do gênero Amazona aestiva. Para a realização das coletas, as aves foram anestesiadas, e em seguida foi realizado lavado do inglúvio e coleta de material da cloaca. As amostras coletadas foram inoculadas em ágar Sabouraud dextrose com cloranfenicol, de onde foram isoladas colônias leveduriformes. Por meio de análises macro e micromorfológicas, os isolados condizentes com as características do gênero Cryptococcus foram submetidos à provas bioquímicas, testes de suscetibilidade aos antifúngicos e pesquisa de exoenzimas. Todos os isolados foram provenientes da cloaca. Dos isolamentos, 90% das cepas corresponderam à espécie C. albidus, e 10% à espécie C. laurentii; 80% foram produtores de fosfolipase e 100% de proteinase. Estes resultados sugerem que não só o ambiente, como também as aves podem ser carreadoras de Cryptococcus albidus. / We performed the isolation of yeasts of Cryptococcus complex from the cloaca and the crop of parrots of the genus Amazona aestiva. To carry out the sampling, the birds were anesthetized to perform a lavage of the crop and the collection of material from the cloaca. The samples were inoculated on Sabouraud dextrose agar with chloramphenicol, which were isolated from yeast colonies. Through macro and micromorphological analysis, isolates consistent with the characteristics of the genus Cryptococcus were subjected to biochemical tests, antifungal susceptibility testing and research exoenzymes. All isolates were from the cloaca. Of the isolates, 90% of the strains corresponded to the species C. albidus, and 10% of the species C. laurentii; 80% of the isolates were producing phospholipase and 100% were producing proteinase. These results suggest that not only environmental but also birds can be Cryptococcus albidus carrier. These results suggest that there is not only an environmental source but also birds can be Cryptococcus albidus carriers
5

The causes and consequences of variation in the cloacal microbiome of tree swallows (Tachycineta bicolor)

Hernandez, Jessica 31 August 2021 (has links)
Animals are ecological landscapes that host communities of microbes often referred to as microbiomes. These microbes can be transferred between individuals when they come into contact, such as during mating. Microbes that reside in or on any aspect of a host that becomes exposed to the reproductive tract or gametes comprise the reproductive microbiome. These microbes within the reproductive microbiome are important to overall host biology because they can influence host reproductive function, and thus play a role in shaping host ecology, evolution, and fitness. Though previous work has revealed much about the impact of beneficial and pathogenic microbes within the reproductive tract, much is left to be learned from describing the dynamic nature of the reproductive microbiome, and ultimately, how it affects host fitness. For my dissertation, I asked questions regarding how and why reproductive microbiome diversity varies among individuals. For instance, does reproductive microbiome diversity vary with respect to the number of mates or mating activity? Does reproductive microbiome diversity vary with host age or breeding stage? Are there fitness consequences associated with differences in reproductive microbiome diversity? To explore these questions, I studied tree swallows (Tachycineta bicolor), a socially monogamous bird in which both females and males engage in extra-pair mating activity. I focused on the cloacal microbiome as it is the site of contact during mating, and thus where microbes can be sexually transferred between individuals. I found that social partners did not have more similar cloacal microbiome diversity compared to other individuals in the same population, and that cloacal microbiome diversity was similar between sexes (Chapter II). By combining an observational approach with a hormone implant manipulation, I found that neither the number of sires per brood nor the increased mating activity of females significantly influenced cloacal microbiome richness or community structure. However, female age and breeding stage did significantly correlate with cloacal microbiome richness and community structure (Chapter III). Based on these findings, I hypothesized that the effect of mating activity on variation in the cloacal microbiome may only be detectable over a female's lifetime, and not within a single breeding season. In addition, I found evidence for a relationship between lay date and cloacal microbiome structure, after controlling for age. And I found that older females lay earlier in the season compared to younger, first-time breeding females (Chapter IV). These results provide support for a relationship between lay date and the cloacal microbiome and highlight the importance of age to this relationship. Lastly, I discussed future steps that can be taken to extend the framework established by my dissertation research, and thereby gain further insight into the factors shaping the reproductive microbiome (Chapter V). / Doctor of Philosophy / Animals host communities of microbes often referred to as microbiomes, and these microbes can be transferred between individuals when they come into contact, such as during mating. Microbes that reside in or on any part of a host that becomes exposed to the reproductive tract make up the reproductive microbiome. These microbes within the reproductive microbiome are important to an animal's biology because they can influence reproductive function, such as fertilization and pregnancy success. Though previous work has revealed much about the impact of beneficial and pathogenic microbes within the reproductive tract, much is left to be learned from describing the dynamic nature of the reproductive microbiome as a whole and how it affects an animal's reproductive success. For my dissertation, I sought to understand how and why reproductive microbiome diversity varies among individuals, especially in relation to mating. To explore these questions, I studied tree swallows (Tachycineta bicolor), a species of bird in which females and males will pair up to breed and rear young, yet both may mate with individuals other than their partner. I focused on the microbiome within the cloaca of birds as it is where contact is made during mating, and thus where microbes can be sexually transferred between individuals. I found that social partners did not have more similar cloacal microbiome diversity compared to other individuals in the same population, and that cloacal microbiome diversity was similar between females and males (Chapter II). Since tree swallows frequently mate with multiple partners and it is possible for bacteria to be acquired though each mating attempt, I proposed that it is important to consider the number of mates per individual when assessing the diversity of the cloacal microbiome. I then performed observational and experimental studies where I assessed the number of mates per female and manipulated female sexual activity with hormone implants. I found that neither the number of sires per brood nor the increased mating activity of females influenced cloacal microbiome diversity, however, female age and breeding stage were significantly associated with cloacal microbiome diversity (Chapter III). Based on these findings, I hypothesized that the effect of mating activity on variation in the cloacal microbiome may only be detectable over a female's lifetime, and not within a single breeding season. In addition, I found evidence for a relationship between lay date and cloacal microbiome structure, after controlling for age. And I found that older females lay earlier in the season compared to younger, first-time breeding females (Chapter IV). Taken together, these results provide support for a relationship between lay date and the cloacal microbiome and highlight the importance of age to this relationship. Lastly, I discussed future steps that can be taken to extend the framework established by my dissertation research and gain further insight into factors shaping the reproductive microbiome (Chapter V).
6

On the cloacal region of Anura in particular of larval Ascaphus / Annals of the University of Stellenbosch, Volume 35, Section A, No.1 (1959)

Van Dijk, D. E. (D. Eddie) 12 1900 (has links)
Thesis (DSc)--University of Stellenbosch, 1959 / Published in the Annals of the University of Stellenbosch, Vol. 35, Sect. A, No.4 (1959) / ENGLISH ABSTRACT: The ontogeny of the cloacal region of Ascaphus is described from limited larval material (beginning approximately at the stage of hind-limb bud development). A comprehensive series of Bufo angusticeps larvae and late pre-larval embryos were used for comparison. The adult and/ or late larval conditions of the cloacal region in Ascaphus, Bufo, Bombina, Leiopelma, Rana and Xenopus arc compared. The rods of Noble supporting the cloaca in Ascaphus and the tendinous sheet connecting these with the epipubis are shown to be modifications of an interfemoral ligament present, with thickened lateral margins, in all the Anura studied. The cloacal lips differentiate early in metamorphosis in Ascaphus and Bufo and bear similar relations to the interfemoral ligament in these and other Anura, so that they are apparently homologous. The posterior part of the urodaeum is lengthened in the adult male Ascaphus to form the "tail" (phallus). The hind-limb anlagen of Ascaphus appear directly beneath the spinal myomeres and immediately behind the posterior tips of the abdominal muscle cords. In Ascaphus, Bufo and Bombina the abdominal muscles (metamerically disposed in Ascaphus and Bufo) are initially attached posteriorly to the spinal myomeres but are separated from them anteriorly. lt is probable that the mm. compressores cloacae are derived from the hind-limb anlagen. In all Anura examined, including members of all the South African families, the a. ischiadica and n. ischiadicus have a small muscle (designated m. circumflexor arteriae) associated with them; it is presumably capable of compressing the artery against the nerve. The cloacal region of Ascaphus appears to be less specialized than that of Rana and Xenopus, contrary to what is generally believed for the last two genera. Bufo, particularly and Bombina have undergone less specialization. / No Afrikaans abstract available.
7

Caracterização das microbiotas bacteriana e fúngica presentes em cloacas de passeriformes silvestres confiscados do tráfico que serão submetidos a programas de soltura / Characterization of bacterial and fungal microbiota present in the cloacae of confiscated wild passerines that will be submitted to release programs

Braconaro, Patricia 31 August 2012 (has links)
Atualmente muitas espécies nativas de pássaros são consideradas raras no Brasil, pois são capturadas de forma indiscriminada por traficantes de animais e são então comercializadas, fazendo com que sejam encontradas cada vez mais em menor quantidade em seus habitats naturais. Animais confiscados do tráfico têm sido submetidos a programas de soltura ou relocação, atentando-se para que os mesmos não representem risco à população nativa. Passeriformes silvestres, saudáveis ou doentes, podem carrear uma grande diversidade de microorganismos e, portanto, o conhecimento sobre o status sanitário de animais apreendidos do tráfico que serão submetidos a programas de soltura, permite uma avaliação quanto à possibilidade destes animais atuarem como portadores de agentes patogênicos bem como atua como elemento esclarecedor da epidemiologia de doenças transmissíveis, aspecto fundamental para a preservação da saúde animal e também humana. O presente estudo procurou avaliar a ocorrência e frequência de bactérias aeróbias e anaeróbias facultativas bem como de fungos em suabes obtidos de cloacas de passeriformes silvestres apreendidos do tráfico e que serão submetidos a programas de soltura. Foram realizados testes de suscetibilidade in vitro dos isolados de E. coli frente a diferentes antimicrobianos utilizando-se o método de disco difusão, bem como a pesquisa de diversos genes codificadores de fatores de virulência nos mesmos através reação em cadeia da polimerase. A maior parte dos passeriformes (62,5%) avaliados apresentou uma microbiota cloacal constituída por bactérias aeróbias e/ou anaeróbias facultativas e/ou fungos, sendo que os microorganismos mais frequentemente isolados foram Staphylococcus spp. (15,0%), Micrococcus spp. (11,5%), Escherichia coli (10,7%) e Klebsiella spp. (10,7%). Observou-se uma maior ocorrência de bactérias Gram positivas seguidas por bactérias Gram negativas e fungos. A frequência de bactérias Gram negativas (28,4% do total de amostras coletadas) foi bastante representativa. Foram isolados 14 gêneros de bactérias, 03 gêneros de leveduras e 04 de fungos filamentosos. As 27 estirpes de E.coli isoladas apresentaram multirresistência aos antimicrobianos, sendo que ampiclina e amoxicilina+ácido clavulânico foram os antimicrobianos frente os quais observou-se maior índice de resistência (100%) por parte dos isolados, enquanto que cloranfenicol foi o antimicrobiano frente o qual observou-se maior índice de sensibilidade (100%). Somente um dos isolados de E.coli foi positivo para presença do gene codificador de fímbria S (sfa), podendo ser compatível com perfil de E. coli patogênica aviária (APEC) ou E. coli uropatogênica (UPEC). Nenhum dos isolados apresentou características condizentes com E.coli enteropatogênica (EPEC). Considerando-se a reduzida ocorrência dos genes codificadores de fatores de virulência estudados pode-se concluir que os passeriformes apreendidos do tráfico representam baixo risco potencial no tocante à transmissão de estirpes de EPECs, APECs e UPECs para outros animais ou mesmo para o ser humano. Por outro lado deve-se considerar o risco potencial de transmissão intra ou interespécies de E. coli multirresistentes aos antimicrobianos bem como a introdução destes micro-organismos no ambiente. Os riscos de disseminação de Salmonella spp., Cryptococcus spp e Candida spp. são pouco prováveis quando considerados programas de soltura. / Currently, many native bird species are considered rare in Brazil, once they are indiscriminately captured by animal traffickers and then are sold, which makes them increasingly found in smaller quantities in their natural habitats. Confiscated animals have been submitted to relocation programs attempting to ensure that they do not pose a risk to the native population. Wild passerines, healthy or sick, may carry a wide variety of microorganisms and therefore, knowledge on health status of confiscated animals which will be relocated, allows an assessment as to whether these animals act as carriers of pathogens to native populations as well as clarifies the epidemiology of diseases, which is fundamental to the preservation of animal and human health. This study aimed to investigate the occurrence and frequency of aerobic and facultative anaerobic bacteria and fungi in cloacal swabs of wild confiscated passerines which will be submitted to relocation programs. In vitro susceptibility testing of E. coli strains to differet antimicrobials as well as an investigation of the presence of virulence genes in these isolates using the polymerase chain reaction were performed. Most of the animals investigated (62.5%) presented a cloacal microbiota composed by aerobic and/or facultative anaerobic bacteria and/or fungi. The microorganisms most frequently isolated were: Staphylococcus spp. (15.0%), Micrococcus spp. (11.5%), Escherichia coli (10.7%) and Klebsiella spp. (10.7%). The frequencies of isolations of Gram positives bacteria were higher (P <0.05) than those of Gram negatives and also higher (P <0.05) than fungi. The frequencies of isolations of Gram negatives bacteria (28.4% from the total of samples) were very representative. Fourteen genera of bacteria, 03 genera of yeasts and 04 of filamentous fungi were isolated. The occurrence of multidrug resistance was observed for 100% of the E. coli isolates. All ,E. coli strains were resistant to ampicillin and amoxicillin plus clavulanic acid and were sensitive to chloramphenicol. One E.coli isolate was positive for the presence of the gene encoding S fimbriae (sfa), may be a strain profile compatible with UPEC or APEC. None of the E. coli isolates resembled EPEC. Considering the reduced occurrence of genes encoding virulence factors it was concluded that confiscated passerines represent low potential risk regarding the transmission of EPECs, APECs or UPECs strains to other animals or even humans. Furthermore, the potential risk of intra or interspecies transmission of E. coli multiresistant to antimicrobials must be considered as well as the introduction of these micro-organisms in the environment. The risks regarding dissemination of Salmonella spp., Cryptococcus spp and Candida spp. are unlikely when relocation programs are considered.
8

Avaliação da microbiota bacteriana e fúngica presente na cloaca de jabutis (Geochelone carbonaria) criados em domicílio e análise do potencial risco a saúde humana / Bacterial and fungal microbiota evaluation in the companion tortoise (Geochelone carbonaria) and the analysis of the potential risk to human health

Pessoa, Carlos Alexandre 16 February 2009 (has links)
Os médicos veterinários que trabalham com répteis frequentemente são indagados pelos proprietários sobre os tipos de doenças que estes animais podem transmitir, bem como sobre as medidas profiláticas que devem ser implementadas para prevenir a transmissão de doenças. Desta forma, o conhecimento sobre os patógenos que estes animais albergam passa a ser importante para orientação dos proprietários quanto aos cuidados adequados que devem ser adotados com estes animais. Os microrganismos que compõem a microbiota podem se tornar patogênicos para seus hospedeiros quando os mesmos encontram-se debilitados, bem como a eliminação contínua destes microrganismos (pelas fezes, por exemplo) por répteis aparentemente saudáveis ou mesmo doentes, pode representar um importante problema para pessoas que tenham contato com eles. Crianças, idosos e indivíduos imunossuprimidos ou imunocomprometidos são bastante suscetíveis às infecções após manipulação de répteis criados como pet. Considerando-se que os répteis participam de forma crescente do mercado de animais criados como pet, suas características microbiológicas devem ser pesquisadas, visando evitar que eles adoeçam ou venham a óbito devido à ocorrência de doenças infecciosas e não transmitam zoonoses para aqueles que os manipulam. Este trabalho teve como objetivos o estudo da microbiota bacteriana e fúngica presente na cloaca de jabutis (Geochelone carbonária) criados em domicílio e análise do potencial risco a saúde humana. Foram realizados exames microbiológicos de swabs de cloaca de 100 jabutis-piranga visando a pesquisa de bactérias aeróbias, anaeróbias facultativas e fungos filamentosos e leveduras. Foram isolados 18 gêneros de bactérias, 06 gêneros de leveduras e 03 gêneros de fungos filamentosos. Os gêneros de microrganismos isolados com maior freqüência foram: Escherichia sp. (67%), Klebsiella spp. (54%), Bacillus spp. (42%), Candida spp. (42%), Citrobacter spp. (33%), Staphylococcus spp. (29%), Corynebacterium spp. (15%) e Aeromonas spp. (15%), dentre outros com menor freqüência. A freqüência de isolamentos de E. coli (67%) foi semelhante à de Klebsiella spp. (54%) e maior (P<0,05) do que as frequências de isolamentos de todos os outros microrganismos. Todos os microrganismos isolados podem representar risco para a saúde humana, devendo-se atentar para os cuidados com répteis criados como animais pet, particularmente quanto aos aspectos de higiene relacionados aos mesmos, visando assim a prevenção destes riscos. / Veterinarians who work with reptiles are frequently asked by owners about diseases that these animals can transmit, as well about the preventative measures that should be taken to prevent the transmission of diseases. Therefore, knowledge about pathogens that inhabit these animals and represent a potential zoonotic risk are very important in order to allow veterinarians to give proper recommendations about husbandry and preventative methods. Children, elderly people, and imunocompromised individuals are increasingly susceptible to infections after reptile pet manipulation. The microorganisms which form the microbiota can become pathogenic for their host if the host is debilitated. Transmission of these microorganisms from healthy or sick reptiles can be hazardous for people that have contact with them. Considering that reptiles are increasing obtained as pet, their microbiota should be investigated in order to prevent transmission of disease to people who manipulate them. The purposes of this paper were to evaluate the bacterial and fungal microbiota in the companion tortoise (Geochelone carbonaria) and to analyze the potential public health risk. One hundred samples of feaces from cloaca were obtained from jabutis-piranga and microbiological examinations were made for the presence of aerobic and facultative anaerobic bacteria, filamentous fungi and yeasts. Eighteen genus of bacteria, six genus of yeasts, and three genus of fungi were identified. The most frequently isolated genus were: Escherichia sp. (67%), Klebsiella spp. (54%), Bacillus spp. (42%), Candida spp. (42%), Citrobacter spp. (33%), Staphylococcus spp. (29%), Corynebacterium spp. (15%) and Aeromonas spp. (15%). The number of isolated E. coli (67%) was similar to that of Klebsiella sp. (54%), and was greater than (P<0.05) the total number of other species isolated. All isolated microorganisms present a public health risk. Therefore, care should be taken when obtaining these reptiles as pets, especially with regards to husbandry and proper hygiene in order to prevent the risk of contamination with the microbiota.
9

Caracterização das microbiotas bacteriana e fúngica presentes em cloacas de passeriformes silvestres confiscados do tráfico que serão submetidos a programas de soltura / Characterization of bacterial and fungal microbiota present in the cloacae of confiscated wild passerines that will be submitted to release programs

Patricia Braconaro 31 August 2012 (has links)
Atualmente muitas espécies nativas de pássaros são consideradas raras no Brasil, pois são capturadas de forma indiscriminada por traficantes de animais e são então comercializadas, fazendo com que sejam encontradas cada vez mais em menor quantidade em seus habitats naturais. Animais confiscados do tráfico têm sido submetidos a programas de soltura ou relocação, atentando-se para que os mesmos não representem risco à população nativa. Passeriformes silvestres, saudáveis ou doentes, podem carrear uma grande diversidade de microorganismos e, portanto, o conhecimento sobre o status sanitário de animais apreendidos do tráfico que serão submetidos a programas de soltura, permite uma avaliação quanto à possibilidade destes animais atuarem como portadores de agentes patogênicos bem como atua como elemento esclarecedor da epidemiologia de doenças transmissíveis, aspecto fundamental para a preservação da saúde animal e também humana. O presente estudo procurou avaliar a ocorrência e frequência de bactérias aeróbias e anaeróbias facultativas bem como de fungos em suabes obtidos de cloacas de passeriformes silvestres apreendidos do tráfico e que serão submetidos a programas de soltura. Foram realizados testes de suscetibilidade in vitro dos isolados de E. coli frente a diferentes antimicrobianos utilizando-se o método de disco difusão, bem como a pesquisa de diversos genes codificadores de fatores de virulência nos mesmos através reação em cadeia da polimerase. A maior parte dos passeriformes (62,5%) avaliados apresentou uma microbiota cloacal constituída por bactérias aeróbias e/ou anaeróbias facultativas e/ou fungos, sendo que os microorganismos mais frequentemente isolados foram Staphylococcus spp. (15,0%), Micrococcus spp. (11,5%), Escherichia coli (10,7%) e Klebsiella spp. (10,7%). Observou-se uma maior ocorrência de bactérias Gram positivas seguidas por bactérias Gram negativas e fungos. A frequência de bactérias Gram negativas (28,4% do total de amostras coletadas) foi bastante representativa. Foram isolados 14 gêneros de bactérias, 03 gêneros de leveduras e 04 de fungos filamentosos. As 27 estirpes de E.coli isoladas apresentaram multirresistência aos antimicrobianos, sendo que ampiclina e amoxicilina+ácido clavulânico foram os antimicrobianos frente os quais observou-se maior índice de resistência (100%) por parte dos isolados, enquanto que cloranfenicol foi o antimicrobiano frente o qual observou-se maior índice de sensibilidade (100%). Somente um dos isolados de E.coli foi positivo para presença do gene codificador de fímbria S (sfa), podendo ser compatível com perfil de E. coli patogênica aviária (APEC) ou E. coli uropatogênica (UPEC). Nenhum dos isolados apresentou características condizentes com E.coli enteropatogênica (EPEC). Considerando-se a reduzida ocorrência dos genes codificadores de fatores de virulência estudados pode-se concluir que os passeriformes apreendidos do tráfico representam baixo risco potencial no tocante à transmissão de estirpes de EPECs, APECs e UPECs para outros animais ou mesmo para o ser humano. Por outro lado deve-se considerar o risco potencial de transmissão intra ou interespécies de E. coli multirresistentes aos antimicrobianos bem como a introdução destes micro-organismos no ambiente. Os riscos de disseminação de Salmonella spp., Cryptococcus spp e Candida spp. são pouco prováveis quando considerados programas de soltura. / Currently, many native bird species are considered rare in Brazil, once they are indiscriminately captured by animal traffickers and then are sold, which makes them increasingly found in smaller quantities in their natural habitats. Confiscated animals have been submitted to relocation programs attempting to ensure that they do not pose a risk to the native population. Wild passerines, healthy or sick, may carry a wide variety of microorganisms and therefore, knowledge on health status of confiscated animals which will be relocated, allows an assessment as to whether these animals act as carriers of pathogens to native populations as well as clarifies the epidemiology of diseases, which is fundamental to the preservation of animal and human health. This study aimed to investigate the occurrence and frequency of aerobic and facultative anaerobic bacteria and fungi in cloacal swabs of wild confiscated passerines which will be submitted to relocation programs. In vitro susceptibility testing of E. coli strains to differet antimicrobials as well as an investigation of the presence of virulence genes in these isolates using the polymerase chain reaction were performed. Most of the animals investigated (62.5%) presented a cloacal microbiota composed by aerobic and/or facultative anaerobic bacteria and/or fungi. The microorganisms most frequently isolated were: Staphylococcus spp. (15.0%), Micrococcus spp. (11.5%), Escherichia coli (10.7%) and Klebsiella spp. (10.7%). The frequencies of isolations of Gram positives bacteria were higher (P <0.05) than those of Gram negatives and also higher (P <0.05) than fungi. The frequencies of isolations of Gram negatives bacteria (28.4% from the total of samples) were very representative. Fourteen genera of bacteria, 03 genera of yeasts and 04 of filamentous fungi were isolated. The occurrence of multidrug resistance was observed for 100% of the E. coli isolates. All ,E. coli strains were resistant to ampicillin and amoxicillin plus clavulanic acid and were sensitive to chloramphenicol. One E.coli isolate was positive for the presence of the gene encoding S fimbriae (sfa), may be a strain profile compatible with UPEC or APEC. None of the E. coli isolates resembled EPEC. Considering the reduced occurrence of genes encoding virulence factors it was concluded that confiscated passerines represent low potential risk regarding the transmission of EPECs, APECs or UPECs strains to other animals or even humans. Furthermore, the potential risk of intra or interspecies transmission of E. coli multiresistant to antimicrobials must be considered as well as the introduction of these micro-organisms in the environment. The risks regarding dissemination of Salmonella spp., Cryptococcus spp and Candida spp. are unlikely when relocation programs are considered.
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Avaliação da microbiota bacteriana e fúngica presente na cloaca de jabutis (Geochelone carbonaria) criados em domicílio e análise do potencial risco a saúde humana / Bacterial and fungal microbiota evaluation in the companion tortoise (Geochelone carbonaria) and the analysis of the potential risk to human health

Carlos Alexandre Pessoa 16 February 2009 (has links)
Os médicos veterinários que trabalham com répteis frequentemente são indagados pelos proprietários sobre os tipos de doenças que estes animais podem transmitir, bem como sobre as medidas profiláticas que devem ser implementadas para prevenir a transmissão de doenças. Desta forma, o conhecimento sobre os patógenos que estes animais albergam passa a ser importante para orientação dos proprietários quanto aos cuidados adequados que devem ser adotados com estes animais. Os microrganismos que compõem a microbiota podem se tornar patogênicos para seus hospedeiros quando os mesmos encontram-se debilitados, bem como a eliminação contínua destes microrganismos (pelas fezes, por exemplo) por répteis aparentemente saudáveis ou mesmo doentes, pode representar um importante problema para pessoas que tenham contato com eles. Crianças, idosos e indivíduos imunossuprimidos ou imunocomprometidos são bastante suscetíveis às infecções após manipulação de répteis criados como pet. Considerando-se que os répteis participam de forma crescente do mercado de animais criados como pet, suas características microbiológicas devem ser pesquisadas, visando evitar que eles adoeçam ou venham a óbito devido à ocorrência de doenças infecciosas e não transmitam zoonoses para aqueles que os manipulam. Este trabalho teve como objetivos o estudo da microbiota bacteriana e fúngica presente na cloaca de jabutis (Geochelone carbonária) criados em domicílio e análise do potencial risco a saúde humana. Foram realizados exames microbiológicos de swabs de cloaca de 100 jabutis-piranga visando a pesquisa de bactérias aeróbias, anaeróbias facultativas e fungos filamentosos e leveduras. Foram isolados 18 gêneros de bactérias, 06 gêneros de leveduras e 03 gêneros de fungos filamentosos. Os gêneros de microrganismos isolados com maior freqüência foram: Escherichia sp. (67%), Klebsiella spp. (54%), Bacillus spp. (42%), Candida spp. (42%), Citrobacter spp. (33%), Staphylococcus spp. (29%), Corynebacterium spp. (15%) e Aeromonas spp. (15%), dentre outros com menor freqüência. A freqüência de isolamentos de E. coli (67%) foi semelhante à de Klebsiella spp. (54%) e maior (P<0,05) do que as frequências de isolamentos de todos os outros microrganismos. Todos os microrganismos isolados podem representar risco para a saúde humana, devendo-se atentar para os cuidados com répteis criados como animais pet, particularmente quanto aos aspectos de higiene relacionados aos mesmos, visando assim a prevenção destes riscos. / Veterinarians who work with reptiles are frequently asked by owners about diseases that these animals can transmit, as well about the preventative measures that should be taken to prevent the transmission of diseases. Therefore, knowledge about pathogens that inhabit these animals and represent a potential zoonotic risk are very important in order to allow veterinarians to give proper recommendations about husbandry and preventative methods. Children, elderly people, and imunocompromised individuals are increasingly susceptible to infections after reptile pet manipulation. The microorganisms which form the microbiota can become pathogenic for their host if the host is debilitated. Transmission of these microorganisms from healthy or sick reptiles can be hazardous for people that have contact with them. Considering that reptiles are increasing obtained as pet, their microbiota should be investigated in order to prevent transmission of disease to people who manipulate them. The purposes of this paper were to evaluate the bacterial and fungal microbiota in the companion tortoise (Geochelone carbonaria) and to analyze the potential public health risk. One hundred samples of feaces from cloaca were obtained from jabutis-piranga and microbiological examinations were made for the presence of aerobic and facultative anaerobic bacteria, filamentous fungi and yeasts. Eighteen genus of bacteria, six genus of yeasts, and three genus of fungi were identified. The most frequently isolated genus were: Escherichia sp. (67%), Klebsiella spp. (54%), Bacillus spp. (42%), Candida spp. (42%), Citrobacter spp. (33%), Staphylococcus spp. (29%), Corynebacterium spp. (15%) and Aeromonas spp. (15%). The number of isolated E. coli (67%) was similar to that of Klebsiella sp. (54%), and was greater than (P<0.05) the total number of other species isolated. All isolated microorganisms present a public health risk. Therefore, care should be taken when obtaining these reptiles as pets, especially with regards to husbandry and proper hygiene in order to prevent the risk of contamination with the microbiota.

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