E-cigarettes have recently become increasingly popular, especially amongst middle and high school students. Although they are marketed as safer alternatives to tobacco cigarettes, they produce toxic metals and carcinogenic nitrosamines. This thesis studies the effects of e-cigarette aerosol on the growth and proliferation of oral epithelial cells because the consequences of vaping, including a potential risk for aberrant growth leading to cancer, are not well understood. Cells were grown in matrigel, causing the formation of three-dimensional spheroids modeling the physiological architecture of the oral epithelium. Those spheroids were chronically exposed to vape with different treatment conditions to study the functional biological effects of the presence of nicotine, dosage, and different types of exposure. The diameter of the spheroids was measured throughout the process as an indicator of cell growth. It showed that the vape exposure, especially nicotine-rich aerosol, induces an increase in spheroid diameter in a dose-dependent manner. The increased cell growth is supported by enhanced metabolic activity as well as increased aldehyde dehydrogenase activity, a marker of stemness prominently upregulated in cancer stem cells. Protein was extracted at the end for protein expression analysis through Western blotting and the identification of the activation of survival signaling pathways and stem cell markers. Lastly, spheroids were co-cultured with Strep. mutans, a cariogenic bacterial resident in the oral cavity, and acutely exposed to vape. Co-culture with S. mutans did not significantly affect spheroid growth under the current experimental conditions or significantly change the expression patterns of proliferation and tumor initiation proteins. Future research will include tumorigenic assays and investigate how vape may induce carcinogenesis of the oral epithelium.

La cavité buccale est un écosystème dynamique et complexe à l'équilibre fragile. A l'occasion de modifications des conditions environnementales ou d'une augmentation de la sensibilité de l'hôte, il y a rupture de cet équilibre. L'altération des conditions locales va permettre la croissance et le développement d'espèces pathogènes jusqu'alors faiblement représentées, ce qui va autoriser la survenue de diverses pathologies infectieuses orales. Devant l'insuffisance des solutions apportées par une prise en charge uniquement mécanique, des moyens supplémentaires doivent être envisagés. La stratégie probiotique ouvre une voie séduisante puisque l'on se propose de remplacer des bactéries pathogènes par des microorganismes ayant des effets bénéfiques sur la santé orale. L'objectif de ce travail vise donc à identifier des souches probiotiques parmi des isolats oraux de lactobacilles. Pour cela, soixante six souches ont été évaluées. Afin de prédire leur persistance orale, trois méthodes différentes d'évaluation de l'adhérence ont été utilisées : une méthode sur tube de verre, la méthode MATS et un modèle de biofilm monoespèce. Des études in vitro ont été conduites pour déterminer si les lactobacilles pouvaient inhiber des pathogènes carieux (Streptococcus mutans et Actinomyces viscosus) et certains pathogènes parodontaux (Fusobacterium nucleatum et Porphyromonas gingivalis) et pour identifier les mécanismes impliqués. Enfin, les capacités fermentaires de certaines souches ont été appréciées, afin d'éviter l'apparition d'effets délétères comme la déminéralisation carieuse. Trois souches seulement ont montré des capacités d'adhérence intéressantes. Selon les critères que nous avions défini pour caractériser une activité comme antibactérienne, aucune souche n'a inhibé P. gingivalis et 9 souches ont été retenues pour leur pouvoir inhibiteur contre les autres pathogènes. Le mode d'action précis de l'inhibition reste encore à préciser. Dans les conditions de cette étude, aucune des souches évaluées pour son activité fermentaire n'a présenté un risque cariogène. Ce travail a permis de mettre en évidence des souches intéressantes soit de part leur adhérence soit de part leur activité inhibitrice. Des études in vitro complémentaires semblent nécessaires (évaluation de la stimulation immunitaire, précision sur les mécanismes impliqués dans les effets observés) avant de poursuivre sur un modèle animal ou des études cliniques chez l'Homme. / The oral cavity is a complex and dynamic ecosystem with a delicate balance. On the occasion of changes in environmental conditions or an increase in the sensitivity of the host, a break can occur. The alteration of local conditions will allow the growth and development of pathogenic species hitherto poorly represented, which will allow the occurrence of various oral infectious diseases. Due to the lack of solutions given by a purely mechanical support, additional resources should be considered. Probiotic strategy appears as an attractive way since it proposes to replace pathogenic bacteria by microorganisms having beneficial effects on oral health. The aim of this study was therefore to identify probiotic strains among oral lactobacilli isolates. To this end, sixty-six strains were evaluated. To predict persistence in mouth, three different methods of assessing adherence were used: a method on glass tube, the MATS method and a monospecie biofilm model. In vitro studies were conducted to determine whether lactobacilli could inhibit caries pathogens (Streptococcus mutans and Actinomyces viscosus) and some periopathogens (Fusobacterium nucleatum and Porphyromonas gingivalis) and to identify the mechanisms involved. Finally, the fermentation capacity of certain strains was assessed in order to avoid the occurrence of adverse effects such as carious demineralization. Only three strains showed adhesion interesting capabilities. According to the criteria we defined to characterize an activity as antibacterial, no strain inhibited P. gingivalis and 9 strains were selected for their inhibitory potency against the others pathogens. The precise mode of action of the inhibition remains unclear. Under the conditions of this study, none of the strains tested for its fermentative activity has introduced a cariogenic risk. This work has highlighted interesting strains because of their adhesion or because of their inhibitory activity. Additional in vitro studies seem necessary (evaluation of immune stimulation, precision of the mechanisms involved in the observed effects) before continuing in an animal model and clinical studies in humans.

Objetivou-se fazer um estudo retrospectivo avaliando quais as afecções da cavidade oral foram mais frequentes nos gatos domésticos atendidos no Laboratório de Odontologia Comparada da Faculdade de Medicina Veterinária e Zootecnia da Universidade de São Paulo, relatando estatisticamente a prevalência das afecções da cavidade oral de gatos, enfatizando se há correlação entre elas e com características como raça, sexo, faixa etária e estado reprodutivo. Os dados analisados dos 754 prontuários foram raça, idade, sexo, estado reprodutivo, diagnóstico, tratamento e, no caso de neoplasia, sua localização e diagnóstico histopatológico. As principais doenças diagnosticadas foram doença periodontal, fratura dentária, gengivoestomatite crônica felina, lesão de reabsorção dentária felina, neoplasia oral e traumatismo do sistema estomatognático (luxação de articulação temporomandibular, fenda palatina, fratura de processo coronoide, fratura de zigomático, disjunção de sínfise, fratura de maxila e mandíbula). A idade dos animais variou de menos de um ano a 20 anos, sendo que, os animais tinham, em média 7,2 anos (desvio padrão = 4,9) e a faixa etária mais frequente foi de um a cinco anos. Os gatos sem raça definida (66,5%), siameses (19,0%) e persas (10,2%) totalizaram 95,7% de todos os felinos atendidos no LOC. A doença periodontal foi a afecção mais frequente e esteve presente em 38,3% da população estudada. A fratura dentária, segunda mais frequente, esteve presente em 27,2% dos animais. Houve associação estatisticamente significativa (p=0,026) entre fratura dentária e faixa etária, já que a proporção de animais entre um e cinco anos de idade com fratura foi maior do que a das outras faixas etárias. A lesão de reabsorção dentária felina (LRDF) esteve presente em 19,6% dos gatos estudados, sendo a terceira afecção mais prevalente dentre as pesquisadas. Esta lesão foi mais frequente em gatos com idade entre 11 e 15 anos e houve associação estatisticamente significativa entre a LRDF e a doença periodontal e entre LRDF e gengivite. A prevalência de gengivoestomatite crônica felina foi de 15,7% entre os felinos pesquisados e a proporção de animais com idades entre seis e dez anos com esta doença foi maior do que em outras faixas etárias. As neoplasias estavam presentes em 9,8% dos gatos, sendo que em 46 dos 72 animais que apresentaram alguma neoplasia tinham mais de dez anos de idade. O carcinoma de células escamosas foi o neoplasma mais comum, correspondendo a 63,2% das neoformações que foram submetidas ao exame histopatológico. As fraturas ósseas do sistema estomatognático corresponderam a 19,3% dos atendimentos, sendo a sínfise mentoniana e o corpo da mandíbula os locais mais comuns de fraturas. Concluiu-se que: existe grande variedade de afecções que acometem a cavidade oral de gatos, sendo a doença periodontal, fratura dentária, lesão de reabsorção dentária, gengivite, gengivoestomatite crônica, neoplasias orais e fraturas dos ossos do sistema estomatognático as mais prevalentes delas; é de extrema importância que as anotações nas fichas de atendimento sejam feitas da maneira mais completa possível, para que informações não sejam perdidas / This study aimed to make a retrospective study assessing which diseases of the oral cavity were more common in domestic cats attended at Comparative Dental Laboratory of the School of Veterinary Medicine and Zootechny of the University of São Paulo, and to report statistically the prevalence of diseases in the oral cavity of cats, emphasizing the correlation between them and with characteristics such as breed, gender, age and reproductive status. The data analyzed from 754 records were breed, age, gender, reproductive status, diagnosis, treatment and in the case of neoplasia, its location and histological diagnosis. The main diagnosed diseases were periodontal disease, tooth fracture, feline chronic gingivostomatitis, tooth resorption lesions, oral cancer and trauma of the stomatognathic system (dislocation of temporomandibular joint, cleft palate, coronoid fracture, zygomatic fracture, symphyseal separation, maxilla and mandible fracture). The age of the animals ranged from less than one year to 20 years, and the animals had an average of 7.2 years (SD = 4.9) and the most frequent age range was from one to five years. Three breeds totaled 95.7% of all cats attended at LOC, which were, Persian (10.2%), Siamese (19.0%) and SRD (66.5%). Periodontal disease was the most common condition and it was present in 38.3% of the studied population. Dental fracture was present in 27.2% of the animals. There was a statistically significant association (p = 0.026) between dental fracture and age, since the proportion of animals between one and five years old with fracture was higher than that of other age groups. The tooth resorption lesions (LRD) were present in 19.6% of the studied cats, being the third most prevalent disease among the survey. This injury was more common in cats aged between 11 and 15 years and there was a statistically significant association between LRD and periodontal and between gum disease and LRD. The prevalence of feline chronic gingivostomatitis was 15.7% among those surveyed cats and the proportion of animals aged between six and ten years with this disease was higher than other age groups. Neoplasia was present in 9.8% of cats, and in 46 of 72 animals that showed some malformation had more than ten years old. The squamous cell carcinoma was the most common neoplasm, corresponding to 63.2% of neoformations that were submitted to histopathology. Bone fractures of the stomatognathic system accounted for 19.3% of cases, the mandibular symphysis and the body of the mandible were the most common sites of fractures. It was concluded that there is a wide range of diseases that affect the oral cavity of cats, and periodontal disease, tooth fracture, dental resorption lesions, gingivitis, gingivostomatitis, oral cancer and fractures of the bones of the stomatognathic system were the most prevalent of them; it is a matter of utmost importance that the notes in all pacient records are done as thoroughly as possible, so that information will not be lost

Made available in DSpace on 2017-07-24T19:22:26Z (GMT). No. of bitstreams: 1 Protasio Vargas Neto.pdf: 1264880 bytes, checksum: 14ef9b969de58a4eae16cc5d445c2e8d (MD5) Previous issue date: 2004-07-29 / Candidosis is a current intraoral infection, resulting from temporary parasitism of Candida, mostly C. albicans. The use of phytotherapics for prevention and control of candidosis is not well stablished. The presence of Candida was determined in the oral cavity of 86 patients, 40 males and 46 females, aging from 18 to 82 yars, without clinical signs of candidosis by plating saliva samples on sabouraud dextrose. Candida was found in 38 (44,18%) individuals, 20 (23,25%) male and 18 (20,93%) female. From 38 samples, 18 were C. albicans, 13 C. tropicalis, 3 C. parapsilosis, 2 C. guilliermondii, 1 C. Krusei and 1 C. kerfyr. The sensitivity of these Candida isolates were evaluated throught three phytotherapics, Anacardium occidentale, Arctium lappa, Plantago major and the natural product propolis. The sensitivity of the yeasts was demonstrated in vitro, using a test of diffusion in agar and a test in tube to determine the number of yeasts killed by the phytotherapics and in vivo by the recovery of Candida from the oral cavity of rats treated with them and by the induction of candidosis in the rat´s tongue. As a comparison, tests with two types of commercial antifungal agents were performed. The results showed an effective action of propolis in both in vivo and in vitro tests. The most effetive phytotherapic was the cajueiro (Anacardium occidentale). Bardana (Arctium lappa) and tanchagem (Plantago major) showed less effetiveness without statistical significance. / A Candidose é uma infecção de ocorrência comum na cavidade bucal, conseqüência de parasitismo temporário por leveduras do gênero Candida. Nesta pesquisa, foram coletadas amostras de saliva de 86 pacientes, 40 do sexo masculino e 46 do sexo feminino, com idade entre 18 e 82 anos, sem candidose clinicamente visível. Destes 86 pacientes 38 (44,18%) foram positivos para Candida, sendo 20 (23,25%) homens e 18 (20,93%) mulheres. Foram isoladas 38 amostras de 6 espécies, 18 caracterizadas como C. albicans, 13 C. tropicalis, 3 C. parapsilosis, 2 C. guilliermondii, 1 C. krusei e C. kerfyr. Foi avaliada a sensibilidade destas cepas de Candida frente a três fitoterápicos; Anacardium occidentale, Arctium lappa, Plantago major e o produto natural própolis, através de dois testes in vitro e dois in vivo. Os testes in vitro foram o teste de difusão em agar e o teste em tubo de ensaio para determinar o número de células sensíveis aos extratos. Os testes in vivo foram de recuperação de Candida da boca de ratos e desenvolvimento de candidose na língua de ratos. Como comparação foram também realizados dois testes de sensibilidade aos antifúngicos comerciais, o teste de difusão em ágar com discos impregnados em antifúngicos da Cecon Ltda (antifungigrama) e o teste da ATB Fungus (bioMérieux). Os resultados mostraram uma efetiva ação da própolis tanto nos testes in vivo quanto in vitro. O fitoterápico mais efetivo frente às amostras de Candida foi o cajueiro. A bardana e a tanchagem apresentaram menor ação sobre as leveduras e não mostraram diferenças significativas entre si.

Metástases para a região oral podem ocorrer nos tecidos moles ou nos ossos maxilares. Tumores metastáticos para a cavidade oral são raros, compreendendo aproximadamente 1% das neoplasias encontradas na região oral. Devido à sua raridade, o diagnóstico de uma lesão metastática na região oral é difícil; tanto para o clínico como para o patologista, ao reconhecer que uma lesão é metastática e na determinação do local de origem. Foram revisados 9 casos sendo 5 mulheres e 4 homens com idades entre 57 e 80 anos e realizada uma crítica revisão da literatura. No presente estudo não foi possível determinar a prevalência das metástases para os ossos maxilares ou para os tecidos moles da cavidade oral; Entretanto, nosso estudo mostra que o exame das estruturas orais é absolutamente fundamental no acompanhamento desses pacientes, pois a presença de possíveis massas metastáticas pode indicar uma neoplasia oculta ou mesmo a falha terapêutica. / Metastasis to the oral region may occur in the soft tissue or jaw bone. Metastatic tumors to the oral cavity are rare, comprising about 1% of neoplasms found in the oral region. Because of its rarity, the diagnosis of a metastatic lesion in the oral region is difficult; both for the clinician and for the pathologist to recognize that an injury is metastatic and determination of the place of origin. 9 cases with 5 women and 4 men aged between 57 and 80 years and performed a critical review of the literature were reviewed. In the present study could not determine the prevalence of metastasis to the jaw bones or the soft tissues of the oral cavity; However, our study shows that the examination of oral structures is absolutely essential to monitor these patients, because the presence of possible metastatic masses may indicate a hidden cancer or treatment failure.

Made available in DSpace on 2016-08-19T18:16:05Z (GMT). No. of bitstreams: 1 DISSERTACAO Lisandra Rocha Vidotti.pdf: 838582 bytes, checksum: 45de3f3ca6ccb3eb1c1e83766e212116 (MD5) Previous issue date: 2012-07-03 / FUNDAÇÃO SOUSÂNDRADE DE APOIO AO DESENVOLVIMENTO DA UFMA / Background: Human Pappilomavirus infection is one of the most common sexually transmitted disease, and can be found at various anatomical sites, such as the anogenital tract, skin, larynx, conjunctiva, tracheobronchial mucosa, esophagus and oral cavity. The path of HPV transmission to the oral cavity is not completely understood, and so many studies are being undertaken aiming to clarify if the genital infection by the virus may be a predisposing factor. Methodology: This is a cross-sectional cohort study. The sample consisted of women attending in ambulatory of the Centro de Pesquisas Clínicas-CEPEC / HUUFMA. After signing the TCLE, all patients answered a questionnaire about social information, medical history, smoking habits, alcohol consumption and sexual behavior and were also subjected to collection of cellular material from the oral cavity and genital area for research of Desoxirribonucleic Acid by polymerase chain reaction technique (PCR). Results And Conclusions: The prevalence of human papillomavirus in the oral cavity was higher in women with genital HPV. With a significant association between the presence of oral HPV DNA and genital HPV DNA: The practice of oral sex, smoking and drinking were not related to the presence of HPV DNA in the oral cavity. / Introdução: A infecção pelo Vírus do Papiloma Humano (HPV) é uma das doenças sexualmente transmissíveis mais prevalentes no mundo, e pode ser encontrada em vários sítios anatômicos, como trato anogenital, pele, laringe, conjuntiva, mucosa traqueobrônquica, esôfago e cavidade oral. A via de transmissão do HPV para a cavidade oral ainda não está completamente compreendida, e por isso, diversas pesquisas, estão sendo realizadas objetivando esclarecer se a infecção genital por este vírus pode ser um fator predisponente. Metodologia: Trata-se de um estudo de coorte transversal: A amostra foi constituída por mulheres atendidas no Ambulatório de Ginecologia do Centro de Pesquisa Clínica do Hospital Universitário da UFMA (CEPEC/HUUFMA). Após assinarem o Termo de Consentimento Livre e Esclarecido (TCLE), todas as pacientes responderam um questionário sobre informações sociais, história médica, hábitos de tabagismo, consumo alcóolico e comportamento sexual e também foram submetidas a coleta de material celular da cavidade oral e da região genital para pesquisa do ácido desoxirribonucleico (DNA) do HPV pela técnica de reação em cadeia da polimerase (PCR). Resultados e Conclusões: A prevalência do HPV na cavidade oral foi maior nas portadoras de HPV nos genitais, com associação significativa entre a presença do DNA-HPV oral com o DNA-HPV genital: A prática de sexo oral, o tabagismo e o etilismo não estiveram relacionados à presença do DNA-HPV na cavidade oral.

Heat shock protein 90 (Hsp90) is an essential and conserved chaperone, required for the conformational maturation and stability of many signaling kinases. We hypothesized that the functional pleiotropism of Hsp90 can be exploited during pharmacological inhibition causing simultaneous restraint of tumor growth as well as suppression of distant spread. Recognizing the lack of therapeutic options in advanced and metastatic squamous cell carcinomas (SCC) of the uterine cervix as well as the oral cavity, this dual concept was tested in corresponding cell lines and xenografts, and correlated with clinical data on client protein expression. Examination of the cell cycle response to Hsp90 inhibition revealed a G2/M-arrest in a panel of four cervical cancer cell lines and a contribution of abnormal mitosis to apoptosis induction in vitro. Although limited to intraperitoneal application, in vivo evidence of biological activity including heat shock response and decreased client kinase phosphorylation was seen with the geldanamycin derivative 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG). Importantly, focal adhesion kinase (FAK) signaling and associated functional parameters were inhibited by the drug treatment. Functional significance of FAK as a client was confirmed using a molecular model based on FAK-related non-kinase (FRNK) expression. Dependency on FAK appeared to be a requirement for full response to FRNK as well as 17-DMAG, and was observed in the mesenchymal-like cervical cell line SiHa. FAK expression and E-cadherin loss were features found in both cervical and oral malignancies, but absent from normal mucosa of either anatomic site. Particularly high FAK expression was noted in oral SCC with sarcomatoid features. Thus, we conclude that Hsp90 inhibition has potential in the treatment of advanced and metastatic SCC of cervical and oral origin. The further examination of novel Hsp90-targeting compounds as well as strategies focused on other components of the Hsp90 chaperone complex seems warranted.

Heat shock protein 90 (Hsp90) is an essential and conserved chaperone, required for the conformational maturation and stability of many signaling kinases. We hypothesized that the functional pleiotropism of Hsp90 can be exploited during pharmacological inhibition causing simultaneous restraint of tumor growth as well as suppression of distant spread. Recognizing the lack of therapeutic options in advanced and metastatic squamous cell carcinomas (SCC) of the uterine cervix as well as the oral cavity, this dual concept was tested in corresponding cell lines and xenografts, and correlated with clinical data on client protein expression. Examination of the cell cycle response to Hsp90 inhibition revealed a G2/M-arrest in a panel of four cervical cancer cell lines and a contribution of abnormal mitosis to apoptosis induction in vitro. Although limited to intraperitoneal application, in vivo evidence of biological activity including heat shock response and decreased client kinase phosphorylation was seen with the geldanamycin derivative 17-dimethylaminoethylamino-17-demethoxygeldanamycin (17-DMAG). Importantly, focal adhesion kinase (FAK) signaling and associated functional parameters were inhibited by the drug treatment. Functional significance of FAK as a client was confirmed using a molecular model based on FAK-related non-kinase (FRNK) expression. Dependency on FAK appeared to be a requirement for full response to FRNK as well as 17-DMAG, and was observed in the mesenchymal-like cervical cell line SiHa. FAK expression and E-cadherin loss were features found in both cervical and oral malignancies, but absent from normal mucosa of either anatomic site. Particularly high FAK expression was noted in oral SCC with sarcomatoid features. Thus, we conclude that Hsp90 inhibition has potential in the treatment of advanced and metastatic SCC of cervical and oral origin. The further examination of novel Hsp90-targeting compounds as well as strategies focused on other components of the Hsp90 chaperone complex seems warranted.

Made available in DSpace on 2014-06-11T19:32:53Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-11-24Bitstream added on 2014-06-13T21:05:09Z : No. of bitstreams: 1 brito_gnb_dr_sjc.pdf: 2623888 bytes, checksum: 9b38ae1778541597981089a1c5d9b974 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Os Transtornos alimentares (TA) como Anorexia Nervosa (AN) e Bulimia Nervosa (BN) são acompanhados de inúmeras alterações sistêmicas e bucais relacionadas ao comprometimento do estado nutricional e às práticas compensatórias inadequadas para o controle do peso. O objetivo deste estudo foi avaliar diversidade microbiológica existente na cavidade bucal de pacientes com estes transtornos, por meio de técnicas de cultivo e utilizando métodos moleculares independentes de cultivo. Foram incluídos no estudo 32 pacientes anoréxicos e 27 bulímicos, pareados com 59 indivíduos controle. Amostras de enxágüe bucal foram semeadas para a avaliação da prevalência de leveduras do gênero Candida, estafilococos, enterococos, estreptococcos do grupo mutans (EGM), lactobacilos, enterobactérias/pseudomonas. Espécies de Candida, estafilococos, enterococos, enterobactérias/pseudomonas foram identificadas pelo sistema API. Amostras de biofilme supragengival foram coletadas e utilizadas somente nos procedimentos moleculares. As contagens de microrganismos nos grupos foram comparadas por ANOVA/Mann-Whitney (5%). Houve diferença estatisticamente significantes (p<0,05) para as contagem de leveduras do gênero Candida, estafilococos, enterococos, EGM e lactobacilos entre o grupo TA e controle, mas não houve diferenças significativas para a prevalência de enterobactérias/pseudomonas (p=0,312). Pequena diferença entre os grupos foi observada na diversidade de espécies dos microrganismos estudados pelo método de cultivo. Avaliação molecular foi realizada pela ribotipagem por seqüenciamento do 16S rRNA bacteriano e regiões D1/D2 do 28S rRNA. Foram avaliados cerca de 3000 clones do grupo TA e 1500 clones do controle. Sessenta e duas espécies ou filotipos de bactérias foram detectados... / Eating disorders such as nervous Anorexia and Bulimia Nervosa have several clinical and oral alterations related to the nutritional state involvement and the inadequate compensatory practices for weight control. The aim of this study was to evaluate the microbial diversity in the oral cavity of patients with Anorexia Nervosa and Bulimia nervosa by cultivation techniques and cultivationindependent molecular methods. The study included 32 patients and 27 bulimic anorexics, matched with 59 control subjects. Oral rinse samples were cultured to assess the prevalence of Candida species, staphylococci, enterococci, streptococci mutans (EGM), lactobacilli, Enterobacteriaceae / Pseudomonas. Candida species, staphylococci, enterococci, Enterobacteriaceae / Pseudomonas were identified by API systems. Supragingival biofilm samples were collected and used only in molecular procedures. Counts of microorganisms in the groups were compared by ANOVA / Mann-Whitney (5%). There was a statistically significant (p <0.05) for the counting of yeasts, staphylococci, enterococci, and lactobacilli EGM between TA and control groups, but there were no significant differences in the prevalence of Enterobacteriaceae / Pseudomonas (p = 0.312). Few differences between the groups were observed in the species diversity of organisms studied by the method of cultivation. Molecular analysis was performed by ribotyping by sequencing the 16S rRNA bacterial and D1/D2 regions of 28S rRNA. About 3000 clones of the TA group and 1500 clones of control were evaluated. Sixty-two species or filotypes of bacteria were detected, with 22 identifications were found only in the study group, only 6 in the control group and 34 in both groups. Microorganisms related to caries and periodontal diseases... (Complete abstract click electronic access below)

Made available in DSpace on 2014-06-11T19:32:55Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-11-23Bitstream added on 2014-06-13T21:05:15Z : No. of bitstreams: 1 navas_eafa_dr_sjc.pdf: 459908 bytes, checksum: ff1249e87aef3abfe1f5c0c880a88231 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Considerando-se que pacientes com Lúpus Eritematoso Sistêmico são submetidos a tratamento com corticosteróides e imunossupressores, podemos concluir que esta condição pode interferir na presença de microrganismos potencialmente oportunistas na cavidade bucal. Deste modo, o objetivo deste estudo foi avaliar a presença de leveduras do gênero Candida, estafilococos, enterobactérias e Pseudomonas spp. na cavidade bucal de pacientes com LES comparando os resultados com indivíduos controle. Desta forma, foram selecionados 40 pacientes com idades entre 19 e 53 anos com LES e que estavam em tratamento por no mínimo 60 dias. Para o grupo controle foram selecionados 40 indivíduos sistemicamente saudáveis com perfil semelhante (quanto à idade, gênero e condições bucais) aos pacientes do grupo em estudo. Não foram incluídos pacientes diabéticos, portadores de próteses bucais totais e outras doenças sistêmicas e que estavam sob terapia com medicamentos que pudessem interferir com as condições bucais. Foram realizados anamnese, exame clínico e coleta de enxágüe bucal de cada paciente. A amostra de enxágüe bucal foi semeada em meios de cultura específicos para cada microrganismo e após período de incubação foram realizadas contagens de unidades formadoras de colônia (UFC), obtendo-se o número de UFC/mL. A partir dos isolados obtidos, foram realizadas provas de identificação a fim de caracterizar as espécies dos gêneros em estudo. As contagens de microrganismos foram comparadas entre os grupos LES e controle por ANOVA, Mann Whitney (5%). Contagens de microrganismos em indivíduos sob tratamento com fármacos imunossupressores ou não e atividade positiva... / Considering that patients with systemic erithematous lupus are treated with corticoids and immunossuppresive drugs, this condition may interfere in the presence of potentially opportunistic microorganisms in the oral cavity. The aim of this study was to evaluate the presence of Candida spp. staphylococci, enterobacteria and Pseudomonas spp. in the oral cavity of patients with systemic erithematous lupus (LES) comparing the results with control individuals. Forty patients aged 19-53 years with LES and under therapy for at least 60 days were selected. For the control group, 40 healthy individuals paired to the test group in relation to age, gender and oral conditions were selected. Diabetic and other systemic diseases patients, denture users and individuals under therapy with drugs that affect the oral conditions were not included. Clinical examination, anamnesis and oral rinses sampling were performed. Oral rinse samples were plated on specific culture media and after the period of incubation the number of colony forming units were counted, and the value of cfu/ml was obtained. The isolates were identified in order to obtain the species. The counts of microorganisms were compared between LES and control groups by ANOVA, Mann Whitney (5%). Also, counts of microorganisms in patients under treatment with immunossupressive drugs of not and positive or negative activity of the disease (SLEDAI) were compared. No significant differences in the counts of microorganisms between the studied groups were observed (yeasts, p= 0.55; staphylococci, p=0.24; enterobacteria/Pseudomonas spp., p=0.26). No differences in the counts of microorganisms were observed related to the clinical parameters tested. Higher prevalence of Candida albicans and Staphylococcus epidermidis... (Complete abstract click electronic access below)