Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-01-26T12:38:56Z No. of bitstreams: 1 2010 - Juberlan Silva Garcia.pdf: 6866273 bytes, checksum: 77b115c7b87deb998b7440f5ecb87940 (MD5) / Made available in DSpace on 2018-01-26T12:38:56Z (GMT). No. of bitstreams: 1 2010 - Juberlan Silva Garcia.pdf: 6866273 bytes, checksum: 77b115c7b87deb998b7440f5ecb87940 (MD5) Previous issue date: 2010-12-03 / The trematode Echinostoma paraensei parasitizes the small intestine of rodents, being its natural definitive host Nectomys squamipes. In spite of the great importance of echinostomatides, there are few studies on morphology, biology and physiology of E. paraensei and its interaction with their intermediate and definitive hosts. In the present study 50 Rattus norvegicus (Wistar),adult females were used, 35 were individually infected with 150 E. paraensei metacercariae (Sumidouro strain) and 15 were maintained uninfected, as control group. Weekly, seven infected and three uninfected rodents were euthanized using CO2.The blood was collected to hematological analysis, and serum obtained by centrifugation and used to aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALKP), gamma-glutamyl transferase (GGT), bilirubin, glucose, total proteins and fractions determinations. Fragments of liver were collected to glycogen determination and histophatological analysis. Adult worms were loaded until third week of infection, being the higher number of worms loaded at first week of inection. The hepatocytes had rounded edges, with signs of impaired nuclear, mild infiltration of polymorphonuclear and sinusoids slightly expanded. The hepatocytes were vacuolated with discrete perivascular and periportal lymphocytic infiltration. The serum biochemical parameters analyzed were increased at the first week of infection, varying onward. Hematological analysis revealed the development of normocytic and normocromic anaemia with anisocytic alteration. In the white blood cells, only a leukopenia was observed at the third week of infection. The present results are discussed. / O tremat?deo Echinostoma paraensei ? um parasito de intestino delgado de roedores, sendo seu hospedeiro definitivo natural Nectomys squamipes. No presente estudo, foram utilizadas 50 f?meas adultas de Rattus norvegicus (Wistar), 35 animais infectados individualmente com 150 metacerc?rias de E. paraensei (linhagem Sumidouro) e 15 animais n?o infectados (controle). Semanalmente, sete animais infectados e tr?s animais controle foram submetidos ? eutan?sia com CO2. O sangue foi coletado para an?lise hematol?gica, e o soro obtido por centrifuga??o, para as determina??es de aspartato aminotransferase (AST), alanina aminotransferase (ALT), gamaglutamiltransferase (GGT), fosfatase alcalina (ALKP), bilirrubina, glicose, prote?nas totais e fra??es. Fragmentos de f?gado foram coletados para a determina??o de glicog?nio e para a an?lise histopatol?gica. Vermes adultos foram recuperados at? a terceira semana de infec??o, sendo o maior n?mro de vermes recuperados na primeira semana. Os hepat?citos apresentavam-se com bordos arredondados e alguns sinais de comprometimento nuclear, infiltra??o por polimorfonucleares nos sinus?ides, vacuoliza??o, discreta infiltra??o linfoplasmocit?ria perivascular e periportal com poucas c?lulas mononucleares presentes na luz do ducto biliar, alguns hepat?citos estavam hipotrofiados. As an?lises hematol?gicas revelaram o desenvolvimento de uma anemia normoc?tica normocr?mica, com anisocitose. N?o foram observadas altera??es significativas na s?rie branca, havendo apenas uma leucopenia na terceira semana de infec??o. Os resultados obtidos s?o discutidos.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2018-08-21T13:03:26Z No. of bitstreams: 1 2010 - Wagner Francisco de Oliveira.pdf: 15558282 bytes, checksum: 81e96e77a201d54d5d633b2f7bd0354f (MD5) / Made available in DSpace on 2018-08-21T13:03:26Z (GMT). No. of bitstreams: 1 2010 - Wagner Francisco de Oliveira.pdf: 15558282 bytes, checksum: 81e96e77a201d54d5d633b2f7bd0354f (MD5) Previous issue date: 2010-03-09 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / Habitats characteristic of the Brazilian coast, the restingas are ecosystems associated with the Atlantic Forest Domain and are characterized by having mesoclimatic conditions considered extreme, and suffer from intense human pressure. Nevertheless, they have great biological diversity, the Bromeliaceae being one of the most representative of these habitats. This study aimed to evaluate the composition, richness and assemblage structure of Bromeliaceae in two areas of restinga located on the island of Marambaia, Mangaratiba, RJ. We established 50 plots of 100 m2 on each of two areas: the Restinga of Praia da Arma??o (RPA) and the Restinga da Praia Grande (RPG). These plots were placed in lines parallel to the beach with 10 meters apart. In each plot were recorded richness and abundance of epiphytic and terrestrial bromeliads and measured the morphometric characteristics of the host tree, as well as vertical and horizontal distributions of epiphytic species. We sampled 11 species of bromeliads and three new records for Marambaia, bringing the richness of this locality for 21 species of Bromeliaceae, considered a high value of wealth. Most of the species is included on some level of threat according to IUCN, which characterizes the Marambaia Island as an important conservation site for the family. The Island had low similarity with other areas of restinga of Rio de Janeiro and this can be attributed to its geographical location in relation to these areas and the fact it is an island region. Neoregelia cruenta and Tillandsia stricta are the most abundant and are the ones with the highest frequency of occurrence, which is directly related to different reproductive strategies of these species. The specific physiological needs, like dispersion and structural complexity of habitat caused if there were differences in the occupation of phorophytes by epiphytic species. Already aggregated distribution of all species is related to the mechanism of occupation of the environment used by plants and the quality of different substrates provided by the environment and the host tree. In general, the species tend to avoid the sampling units in accordance mainly with the heterogeneity of the habitat but, however, tend to co-exist in phorophytes once occupied the height classes differently. In this study, none of the morphometric parameters of the host tree explained the variations in the parameters of assemblage richness and abundance of bromeliads, indicating that other variables should better explain these relationships. / H?bitats caracter?sticos do litoral brasileiro, as restingas s?o ecossistemas associados ao Dom?nio da Floresta Atl?ntica e caracterizam-se por apresentar condi??es mesoclim?ticas consideradas extremas, al?m de sofrer com intensa a??o antr?pica. Apesar disso, possuem grande diversidade biol?gica, sendo a fam?lia Bromeliaceae uma das mais representativas nestes habitats. Este estudo visou avaliar a composi??o, riqueza e a estrutura da taxocenose de Bromeliaceae em duas ?reas de restinga localizadas na Ilha da Marambaia, Mangaratiba, RJ. Foram estabelecidas 50 parcelas de 100 m2 em cada uma das duas ?reas: a restinga da Praia da Arma??o (RPA) e a restinga da Praia Grande (RPG). Estas parcelas foram alocadas em linhas paralelas ? praia distando 10 m entre si. Em cada parcela foram registradas a riqueza e a abund?ncia de brom?lias terrestres e ep?fitas e mensuradas as caracter?sticas morfom?tricas dos for?fitos, e bem como as distribui??es vertical e horizontal das esp?cies ep?fitas. Foram amostradas 11 esp?cies de brom?lias e tr?s novas ocorr?ncias para a Marambaia, elevando a riqueza desta localidade para 21 esp?cies de Bromeliaceae, considerado um valor alto de riqueza. A maior parte das esp?cies amostradas est? inclu?da em algum n?vel de amea?a segundo a UICN, o que caracteriza a Ilha da Marambaia como um importante s?tio de conserva??o para a fam?lia. A Ilha apresentou baixa similaridade com outras ?reas de restinga do RJ e isto pode ser atribu?do a sua localiza??o geogr?fica em rela??o a estas ?reas e ao fato de se tratar de uma regi?o insular. Neoregelia cruenta e Tillandsia stricta s?o as mais abundantes e s?o as que possuem os maiores valores de freq??ncia de ocorr?ncia, fato que est? diretamente relacionado ?s estrat?gias reprodutivas diferenciadas destas esp?cies. As necessidades fisiol?gicas espec?ficas, forma de dispers?o e a complexidade estrutural do h?bitat fizeram com que houvesse diferen?as na ocupa??o dos for?fitos pelas esp?cies ep?fitas. J? a distribui??o agregada de todas as esp?cies est? relacionada ao mecanismo de ocupa??o do ambiente utilizado pelas plantas e pela qualidade diferenciada dos substratos oferecidos pelo ambiente e pelos for?fitos. De uma forma geral, as esp?cies tendem a se evitar nas unidades amostrais de acordo, principalmente, com a heterogeneidade do h?bitat mas, no entanto, tendem a co-existir nos for?fitos uma vez que ocupam as classes de altura de forma diferenciada. Neste estudo, nenhum dos par?metros morfom?tricos do for?fito explicou as varia??es dos par?metros de riqueza e abund?ncia da taxocenose de Bromeliaceae, indicando que outras vari?veis devem explicar melhor essas rela??es.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2018-08-23T18:54:19Z No. of bitstreams: 1 2017 - Mariana de Souza Oliveira.pdf: 2345749 bytes, checksum: 613f695368567431340caa1eae7f5872 (MD5) / Made available in DSpace on 2018-08-23T18:54:19Z (GMT). No. of bitstreams: 1 2017 - Mariana de Souza Oliveira.pdf: 2345749 bytes, checksum: 613f695368567431340caa1eae7f5872 (MD5) Previous issue date: 2017-08-31 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Brazil is one of the 5 most megadiverse countries in the world, presenting 14% of all the biodiversity known worldwide. Brazil also has a greater tropical vegetation covering the world, presenting a high number of endemic species, becoming one of the most important countries in the world for investments in bird conservation. The district of Cacaria, in the municipality of Pira?, Rio de Janeiro, Brazil, has an extensive vegetation cover area, but is affected by local cattle breeding, as well as other anthropogenic actions. Birds can have a high diversity of parasites, such as ectoparasites, helminths and coccidia. Coccidian parasites are the main cause of enteritis, behavioral and reproductive changes in most species of birds. . Coccidia studies are relevant both to animal health and to knowledge of the biodiversity of these parasites. In this context, the objective of this study was to examine the feces of wild birds captured in fragments of Atlantic Forest in the district of Cacaria, in southeastern Brazil, to identify and quantify the coccidian parasites that were present, besides relating them to some ecological characteristics of birds. 14 expeditions were carried out on three fragments of Atlantic Forest in Cacaria, resulting in the capture of 143 birds, with 20 of them positive for coccidia. Among the positive samples, coccidia of Isospora and Eimeira classification were found in 12 species of birds. These coccidia were identified according to the literature, species of coccidia not described in the literature until the present moment were considered morphotypes. There was no relation between the bird species and the positive samples, with their respective oopds (Oocyst by defecation). Regarding the ecological characteristics, only living habits in forest environments were significant, showing that the birds of forest environments are less susceptible to infection. Regarding eating habits, there were no significant results / O Brasil ? um dos 5 pa?ses mais megadiversos do mundo, apresentando 14% de toda a biodiversidade conhecida mundialmente. O Brasil tamb?m tem uma maior vegeta??o tropical cobrindo o mundo, apresentando um elevado n?mero de esp?cies end?micas, tornando-se um dos pa?ses mais importantes do mundo para investimentos em conserva??o de aves. O distrito de Cacaria, no munic?pio de Pira?, Rio de Janeiro, Brasil, tem uma extensa ?rea de cobertura vegetal, mas ? afetado pela cria??o de gado local, al?m de outras a??es antr?picas. As aves podem ter uma alta diversidade de parasitas, como ectoparasitas, helmintos e coccidia. Os parasitas coccidianos s?o a principal causa de enterite, altera??es comportamentais e reprodutivas, na maioria das esp?cies de aves. Os estudos de coccidia s?o relevantes tanto para a sa?de animal quanto para o conhecimento da biodiversidade desses parasitas. Neste contexto, o objetivo deste estudo foi examinar as fezes de aves silvestres capturadas em fragmentos de Mata Atl?ntica no distrito de Cacaria, no sudeste do Brasil, para identificar e quantificar os parasitas coccidianos que estavam presentes, al?m de relacion?-los a algumas caracter?sticas ecol?gicas das aves. Foram realizadas 14 expedi??es em 3 fragmentos de Mata Atl?ntica em Cacaria, resultando em captura de 143 aves, com 20 delas positivas para cocc?dios. Dentre as amostras positivas foram encontradas cocc?dios de classifica??o Isospora e Eimeira, em 12 esp?cies de aves. Esses cocc?dios foram identificados de acordo com a literatura, as esp?cies de cocc?dios n?o descritas na literatura at? o presente momento foram consideradas morfotipos. N?o se obteve rela??o entre as esp?cies de aves e as amostras positivas, com seus respectivos oopds (Oocisto por defeca??o). Em rela??o as caracter?sticas ecol?gicas, apenas h?bitos de viv?ncia em ambientes florestais foi significante, apresentando que as aves de ambientes florestais s?o menos suscept?veis a infec??o. J? em rela??o aos h?bitos alimentares, n?o se obteve resultados significativos.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T16:14:44Z No. of bitstreams: 5 lopes.pdf: 4584389 bytes, checksum: 490508b2570ae9d7329524ffc42068ef (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T10:36:20Z (GMT) No. of bitstreams: 5 lopes.pdf: 4584389 bytes, checksum: 490508b2570ae9d7329524ffc42068ef (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T10:36:20Z (GMT). No. of bitstreams: 5 lopes.pdf: 4584389 bytes, checksum: 490508b2570ae9d7329524ffc42068ef (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2013 / A presente disserta??o consiste em dois artigos cient?ficos, sendo um artigo original e outro de revis?o. Em um dos artigos, os autores fizeram uma revis?o da literatura sobre c?ncer e pr?polis, abordando a carcinog?nese experimental induzida quimicamente pelo 9,10-dimetil-1,2-benzantraceno (DMBA), a composi??o qu?mica da pr?polis e seus efeitos quimiopreventivos. O objetivo do artigo de pesquisa foi avaliar a rea??o tecidual da mucosa lingual de hamsters, submetida ? aplica??o di?ria e alternada de DMBA e extrato etan?lico de pr?polis (EEP) de uma apresenta??o comercial. Materiais e m?todos: 60 hamsters foram divididos em tr?s grupos, com dois per?odos experimentais, 13 e 20 semanas. A borda lateral da l?ngua foi submetida ? aplica??o t?pica, di?ria e alternada de DMBA 0,5 % e EEP 30 % (grupo EEP, n = 20), DMBA 0,5 % e extrato aquoso de pr?polis (EAP) (grupo EAP, n = 20), DMBA 0,5 % e soro fisiol?gico (grupo DMBA, n = 20). Realizou-se an?lise da ocorr?ncia dos tipos de altera??es cl?nicas e histol?gicas. Mensurou-se a ?rea e volume das altera??es cl?nicas, a ocorr?ncia das altera??es estruturais (AE) e citol?gicas (AC) do tecido epitelial escamoso com atipias e a ?rea histol?gica dos carcinomas de c?lulas escamosas (CCE). Para a an?lise estat?stica, aplicaram-se os testes ANOVA, qui-quadrado, Kruskal-Wallis e Mann-Whitney. Resultados: Para todas as vari?veis analisadas, n?o houve diferen?as significativas na compara??o entre os grupos nos dois tempos experimentais. Em 13 semanas ocorreu uma ?nica les?o de CCE no grupo EEP. Em 20 semanas, a maior ocorr?ncia de CCE tamb?m foi no grupo EEP. Conclus?o: o EEP, com teor alco?lico de 30 %, favoreceu a rea??o tecidual da inicia??o e da promo??o da carcinog?nese, por mecanismos ainda n?o elucidados. / ABSTRACT This dissertation consists of two papers, the first one is a review and the second is an original paper. In the first article, the authors reviewed the literature on cancer and propolis, addressing experimental carcinogenesis, chemically induced by 9,10-dimethyl-1,2-benzanthracene (DMBA), the chemical composition of propolis and its chemopreventive effects. The aim of the research paper was to evaluate the?tissue response?of tongue mucosa of hamsters, subjected to daily and alternating application of ethanolic extract of propolis (EEP) of a commercial presentation. Materials and methods: 60 hamsters were divided into three groups, and two experimental periods, 13 and 20 weeks. The lateral edge of the tongue underwent daily and alternate topical application of DMBA 0.5% and 30% EEP (EEP group, n = 20), DMBA and 0.5% aqueous extract of propolis (EAP) (EAP group; n = 20), and DMBA 0.5%?saline (DMBA?group, n =?20). The occurrence of types of clinical and histological changes was analysed. The area and volume of clinical changes, the occurrence of structural (AE) and cytological (CA) changes of squamous epithelial tissue with atypia and the histological area of squamous cell carcinoma (SCC) were measured. For statistical analysis, ANOVA, chi-square and Kruskal-Wallis and Mann-Whitney test were applied. Results: For all variables, there were no significant differences when comparing the groups in the two experimental periods. In 13 weeks, a single lesion of SCC in EEP group was observed. At 20 weeks, the highest occurrence of SCC was also in the group EEP. Conclusion: the EEP, with an alcohol content of 30% favored tissue reaction of initiation and promotion of carcinogenesis by mechanisms not yet elucidated.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T16:14:44Z No. of bitstreams: 5 paulo.pdf: 587935 bytes, checksum: 87aa85ba53d81494c9eabf55750f07b7 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T10:41:39Z (GMT) No. of bitstreams: 5 paulo.pdf: 587935 bytes, checksum: 87aa85ba53d81494c9eabf55750f07b7 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T10:41:39Z (GMT). No. of bitstreams: 5 paulo.pdf: 587935 bytes, checksum: 87aa85ba53d81494c9eabf55750f07b7 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2013 / Uma sa?de bucal prec?ria pode afetar aspectos da vida di?ria das crian?as, como a capacidade mastigat?ria, o sono, o desempenho escolar, a intera??o social, a autoestima, bem como o peso e o crescimento. No entanto, h? poucas evid?ncias sobre a influ?ncia de problemas bucais no bem-estar biopsicossocial de pr?-escolares e suas fam?lias, sobretudo comparando aqueles que vivem em zonas urbanas e rurais. O objetivo deste estudo foi avaliar os fatores determinantes da qualidade de vida relacionada ? sa?de bucal (OHRQoL) de crian?as pr?-escolares e suas fam?lias residentes em zona urbana e em zonas rurais de extrema pobreza. Foi realizado um estudo transversal com 391 crian?as, entre dois e cinco anos de idade, das zonas urbana e rural de Diamantina/MG, selecionadas aleatoriamente durante a Campanha Nacional de Vacina??o Infantil. Os pais das crian?as responderam ? vers?o brasileira do Early Childhood Oral Health Impact Scale (B-ECOHIS) e forneceram dados socioecon?micos. Exames cl?nicos das crian?as foram realizados para avaliar c?rie dent?ria, defeitos de desenvolvimento de esmalte, fluorose dent?ria, les?es ou varia??es de normalidade da mucosa bucal e m? oclus?o. An?lise estat?stica envolveu an?lise descritiva, teste de Mann-Whitney, teste do qui-quadrado e regress?o linear m?ltipla. O n?vel de signific?ncia estabelecido foi de 5%. Os valores m?dios do ECOHIS para cada condi??o bucal avaliada foram: c?rie dent?ria 4.52 (DP=6.84), defeitos de desenvolvimento de esmalte 3,82 (DP=6,86), fluorose dent?ria 4,56 (DP=7,53), les?es ou varia??es da normalidade da mucosa bucal 2,84 (DP=5,46) e m? oclus?o 2,16 (DP=4,56). Diferen?as significativas foram encontradas entre o local de resid?ncia e: g?nero (P = 0,008), n?mero de filhos (P = 0,001) e defeitos de desenvolvimento de esmalte (P = 0,035). Fam?lias da zona rural apresentaram valores significativamente inferiores nos aspectos socioecon?micos (P < 0,005), quando comparadas ? fam?lias da zona urbana. Na zona urbana, foram encontradas associa??es significativas entre impacto na OHRQoL e: idade da crian?a em meses (P = 0,004), g?nero (feminino) (P = 0,034), n?mero de dentes cavitados (P < 0,001) e presen?a de defeitos de desenvolvimento de esmalte (P = 0,004). Na zona rural foi encontrada associa??o significativa somente entre impacto na OHRQoL e n?mero de dentes cavitados (P <0,001). Problemas bucais como c?rie dent?ria e defeitos de desenvolvimento de esmalte afetaram negativamente a qualidade de vida de crian?as pr?-escolares e suas fam?lias. Na zona urbana, o n?mero de dentes cavitados, defeitos de desenvolvimento de esmalte, al?m da idade e g?nero (feminino) contribu?ram para diminui??o da qualidade de vida das crian?as pr?-escolares e suas fam?lias. Na zona rural, somente o n?mero de dentes cavitados comprometeu significativamente a vida di?ria dos pr?-escolares e suas fam?lias. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Odontologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2011. / ABSTRACT Poor oral health can affect aspects of children's daily lives, such as the ability to chew, sleep, school performance, social interaction, self-esteem as well as weight and growth. However, there is little evidence about the influence of oral health problems on biopsychosocial well-being of preschool children and their families, especially comparing those living in urban and rural areas. The aim of this study was to assess the determinants of oral health-related quality of life (OHRQoL) of preschool children and their families living in urban and rural areas of extreme poverty. A cross-sectional study was conducted with 391 children between two and five years of age, from urban and rural areas in Diamantina/MG randomly selected during the National Immunization Campaign. The children's parents answered the Brazilian version of the Early Childhood Oral Health Impact Scale (B-ECOHIS) and provided socioeconomic data. Clinical examination of the children was conducted to assess dental caries, developmental defects of enamel, dental fluorosis, injury or damage to the oral mucosa and malocclusion. Statistical analysis involved descriptive analysis, Mann-Whitney test, chi-square test and multiple linear regression. Significance level was set at 5%. The mean ECOHIS total scores for each oral condition were: dental caries 4.52 (SD = 6.84), developmental defects of enamel, 3.82 (SD = 6.86), dental fluorosis 4:56 (SD = 7.53), injury or oral mucosa lesions 2.84 (SD = 5.46) and malocclusion 2.16 (SD = 4.56). Significant differences were found between place of residence and: gender (P = 0.008), number of children (P = 0.001) and developmental defects of enamel (P = 0.035). Families from rural area had significantly lower socioeconomic aspects (P <0.005), when compared to families from urban area. In urban areas, significant associations were found between the impact on OHRQoL and children's age in months (P = 0.004), gender (female) (P = 0.034), number of cavitated teeth (P <0.001) and presence of developmental defects of enamel (P = 0.004). In rural areas significant association was found only between the impact on OHRQoL and the number of cavitated teeth (P <0.001). Oral health problems such as dental caries and developmental defects of enamel negatively affected the quality of life of preschool children and their families. In the urban area, number of cavitated teeth, developmental defects of enamel, in addition to age and gender contributed to decreased quality of life of preschool children and their families. In rural areas, only the number of cavitated teeth impaired significantly the daily lives of preschool children and their families.

Submitted by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-01-23T16:14:44Z No. of bitstreams: 5 george.pdf: 1321962 bytes, checksum: 4431a511a9e919efedb58883c89d3635 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Approved for entry into archive by Rodrigo Martins Cruz (rodrigo.cruz@ufvjm.edu.br) on 2015-02-10T10:47:26Z (GMT) No. of bitstreams: 5 george.pdf: 1321962 bytes, checksum: 4431a511a9e919efedb58883c89d3635 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) / Made available in DSpace on 2015-02-10T10:47:26Z (GMT). No. of bitstreams: 5 george.pdf: 1321962 bytes, checksum: 4431a511a9e919efedb58883c89d3635 (MD5) license_url: 52 bytes, checksum: 3d480ae6c91e310daba2020f8787d6f9 (MD5) license_text: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) license.txt: 2109 bytes, checksum: aa477231e840f304454a16eb85a9235f (MD5) Previous issue date: 2013 / O objetivo deste estudo foi avaliar a influ?ncia da qualidade do tratamento de canal radicular (TCR), de fatores relacionados ? restaura??o coron?ria (RC), les?es por c?rie e par?metros cl?nicos periodontais no estado periapical de dentes tratados endodonticamente. Os pacientes foram tratados por estudantes de gradua??o na Cl?nica de Endodontia da Universidade Federal dos Vales do Jequitinhonha e Mucuri, entre o per?odo de 2004 a 2009. A reavalia??o cl?nica e radiogr?fica foi realizada entre Setembro de 2010 e Fevereiro de 2011. Foram coletados dados contidos nos prontu?rios odontol?gicos (idade, g?nero, dente tratado, estado periapical pr?-operat?rio, tipo de tratamento, t?cnicas de instrumenta??o e obtura??o empregadas, radiografia final da obtura??o e tipo de restaura??o coron?ria). Clinicamente, foram considerados fatores relacionados a sinais e sintomas endod?nticos, les?es por c?rie, RC e par?metros periodontais. Radiograficamente avaliou-se o estado periapical, les?es por c?rie, RC e pino intrarradicular. Os resultados foram analisados estatisticamente usando os testes qui-quadrado de Pearson, exato de Fisher, McNemar e regress?o log?stica bivariada e multivariada (p<0,05). Foram reavaliados 122 pacientes ap?s per?odo de acompanhamento de 12 a 66 (37,7?16,4) meses, e estes apresentaram 154 dentes tratados endodonticamente. Os dados foram organizados e analisados conforme o desenho de estudo e vari?veis estudadas, sendo apresentados em dois artigos cient?ficos. No geral a taxa de sucesso cl?nico-radiogr?fico do TCR foi de 73,4%. No estudo longitudinal observou-se frequ?ncias elevadas de obtura??es perfeitas (41,6%) e satisfat?rias (46,1%) e frequ?ncia reduzida de obtura??es deficientes (12,3%). A qualidade das obtura??es e das restaura??es coron?rias, analisadas isoladamente, influenciou no sucesso cl?nico-radiogr?fico (p<0,05); a presen?a de pr?via les?o periapical (OR=10,24; IC=3,15-33,22) foi o fator decisivo para o insucesso do tratamento. No estudo transversal observou-se que a presen?a de les?es por c?rie (p=0,017), sangramento gengival ? sondagem (p=0,043) e mobilidade dent?ria (p=0,022) foram os fatores associados ao insucesso do TCR. As outras vari?veis relacionadas ?s les?es por c?rie, RC, qualidade da obtura??o e par?metros cl?nicos periodontais, n?o influenciaram no insucesso do tratamento (p>0,05). Concluiu-se que, no estudo longitudinal, o pr?vio estado periapical foi o principal fator que influenciou o progn?stico do TCR e, no estudo transversal, a presen?a de les?es por c?rie e aspectos periodontais influenciaram negativamente no estado periapical dos dentes tratados endodonticamente. / Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Odontologia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2012. / ABSTRACT The aim of this study was to evaluate the influence of root canal treatment (RCT) quality, factors related to the coronal restoration (CR), carious lesions and periodontal clinical parameters in the periapical status of endodontically treated teeth. The patients were treated by undergraduate students at the Clinic of Endodontics, Federal University of Jequitinhonha and Mucuri Valleys (UFVJM) in the period between 2004-2009. The clinical and radiographic recall was performed between September 2010 and February 2011. Data were collected in records dentistry (age, gender, treated tooth, periapical status preoperative, type of treatment, instrumentation and obturation techniques, final radiography of the filling and the type of coronal restoration). Clinically, factors related to carious lesions, CR and periodontal parameters were considered. Radiographic parameters were evaluated the periapical status, carious lesions, CR and cast post. The results were statistically analyzed using Pearson chi-square, Fisher?s exact and McNemar tests, bivariate and multivariate logistic regression (p<0.05). A total of 122 patients were reassessed after a follow-up of 12-66 (37.7?16.4) months which had 154 endodontically treated teeth. Data were organized and analyzed according to the study design and variables, and are presented in two papers. Overall, the success rate of the RCT was 73.4%. In the longitudinal study it was observed a high frequency of perfect (41.6%) and satisfactory (46.1%) fillings and a reduced frequency of deficient (12.3%) fillings. The quality of fillings and coronal restorations, when analyzed individually, influenced the clinical and radiographic success (p<0,05); preoperative periapical lesion was the main factor for the treatment insuccess (OR=10.24, CI=3.15-33.22). In cross-sectional study it was observed that the presence of carious lesions (p=0.017), gingival bleeding (p=0,043) and tooth mobility (p=0.022) were the factors associated with insuccess of RCT. The other variables related to carious lesions, CR, quality of fillings and periodontal clinical parameters, did not influence the insuccess treatment (p>0.05). In conclusion, the prior periapical status was the main factor affecting the prognosis of the RCT in the longitudinal study and, in the cross-sectional study the presence of carious lesions and periodontal aspects negatively influenced the periapical status of endodontically treated teeth.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-08-30T15:49:24Z No. of bitstreams: 1 2010 - Juliana M?ller Freire.pdf: 12006121 bytes, checksum: 145a6bd3be51d71faac2dfdc0a20e5c4 (MD5) / Made available in DSpace on 2016-08-30T15:49:24Z (GMT). No. of bitstreams: 1 2010 - Juliana M?ller Freire.pdf: 12006121 bytes, checksum: 145a6bd3be51d71faac2dfdc0a20e5c4 (MD5) Previous issue date: 2010-07-01 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior, CAPES, Brasil. / This study aimed to evaluate the structure and floristics of shrubs and trees in areas of northern and southern slopes in the southern portion of the Maci?o da Pedra Branca, Rio de Janeiro, RJ. We tested the hypothesis that different component orientations may influence the structure and floristic changes. In a sample area of 9.700 m2, divided into ten areas, were surveyed 1508 individuals, distributed in 324 species, 154 genera and 52 families. The families richest in species were: Myrtaceae, Lauraceae, Fabaceae, Rubiaceae and Euphorbiaceae. The Diversity Index Shannon-Wiener (H ') was 5.093 nats / indiv., And the evenness (J) was 0.881. Horizontal structure in the species Joannesia princeps, Piptadenia gonoacantha e Pseudopiptadenia contorta, Meternichia princeps, Apuleia leiocarpa, Astrocaryum aculeatissimum, Chrysophyllum flexuosum reached the highest value of phytosociological importance. A phytosociological analysis of each individual area indicated significant floristic and structural variations, with a trend toward greater diversity is found in areas of higher altitude and farther from the urban perimeter. Of the 324 species found in the study, 124 were found exclusively on the north side, 100 on the southern slope and 100 occurred in both strands. The exclusive species and more frequent on the north side were Brosimum guianense e Annona cacans, Zollernia ilicifolia, Couratari pyramidata, Lecythis pisonis e Gallesia integrifolia. On the southern slope, the exclusive species that stood out were Cariniana estrellensis, Cabralea canjerana, Eugenia microcarpa. Cluster analysis among the ten areas indicated, in general, greater similarity due to the proximity between areas than for the orientation of the slope, however comparing the north and south closer together, it is observed that the highest diversity indices, most proportion of rare species and unique and the most advanced stages of succession were found on the southern slope. The cases where this did not happen were observed in areas closer to the urban boundaries that regardless of the slope were less floristic diversity. The diameter distribution model presented inverted J, with a diameter range quite variable between areas. No pattern was found between the diameter distribution and orientation of the slope. Comparing the flora of Pedra Branca with other forest areas in Rio de Janeiro, there was generally a low floristic similarity. The major floristic identity occurred with the work in-house Pedra Branca, Serra da Tiririca, and Tijuca Forest. Works out of the city showed floristic similarity below 25%. The high diversity of the studied area is a reflection of its high environmental heterogeneity, related to differences in altitude, slope orientation, successional stage and history of use, which puts the Pedra Branca as a strategic area for species conservation in Rio de Janeiro. / Este trabalho teve como objetivo avaliar a estrutura e a flor?stica do estrato arbustivo e arb?reo em ?reas de encostas norte e sul, na por??o meridional do maci?o da Pedra Branca, Rio de Janeiro, RJ. Foi testada a hip?tese que diferentes orienta??es de vertente podem influenciar a estrutura e a flor?stica da vegeta??o. Em uma ?rea amostral de 9.700 m2, distribu?das em dez ?reas, foram inventariados 1.508 indiv?duos, distribu?dos em 324 esp?cies, 154 g?neros e 52 fam?lias. As fam?lias mais ricas em esp?cies na foram: Myrtaceae, Lauraceae, Fabaceae, Rubiaceae e Euphorbiaceae. O ?ndice de Diversidade de Shannon- Wiener (H?) foi de 5,093 nats/indiv., e a equabilidade (J) foi de 0,881. Na estrutura horizontal as esp?cies Joannesia princeps, Piptadenia gonoacantha e Pseudopiptadenia contorta, Meternichia princeps, Apuleia leiocarpa, Astrocaryum aculeatissimum, Chrysophyllum flexuosum alcan?aram o maior valor de import?ncia fitossociol?gico. A an?lise fitossociol?gica de cada ?rea indicou importantes varia??es estruturais e flor?sticas, com tend?ncia ? maior diversidade ser encontrada nas ?reas de maior altitude e mais distantes do per?metro urbano. Das 324 esp?cies encontradas no trabalho, 124 ocorreram exclusivamente na vertente norte, 100 na vertente sul e 100 ocorreram em ambas as vertentes. As esp?cies exclusivas e mais freq?ente na vertente norte foram o Brosimum guianense e Annona cacans, Zollernia ilicifolia, Couratari pyramidata, Lecythis pisonis e Gallesia integrifolia. Na vertente sul, as esp?cies exclusivas que mais se destacaram foram Cariniana estrellensis, Cabralea canjerana, Eugenia microcarpa. A an?lise de agrupamento entre as dez ?reas indicou, em geral, maior semelhan?a em decorr?ncia da proximidade entre ?reas do que pela orienta??o da encosta, entretanto comparando as vertentes norte e sul mais pr?ximas, observase que os maiores ?ndices de diversidade, a maior propor??o de esp?cies raras e exclusivas e os est?gios de sucess?o mais avan?ados foram encontradas na vertente sul. Os casos em que isso n?o ocorreu foram observados nas ?reas mais pr?ximas ao per?metro urbano que, independente da vertente apresentaram menor diversidade flor?stica. A distribui??o diam?trica apresentou modelo do J invertido, sendo a amplitude diam?trica bastante vari?vel entre ?reas. N?o foi encontrado um padr?o entre distribui??o diam?trica e a orienta??o da encosta. Comparando a flor?stica do trecho estudado do Maci?o da Pedra Branca com outras ?reas florestais do Rio de Janeiro, observou-se uma baixa similaridade flor?stica. A maior identidade flor?stica ocorreu com trabalhos realizados na pr?pria Pedra Branca, na Serra da Tiririca, e na Floresta da Tijuca. Trabalhos fora do munic?pio apresentaram similaridade flor?stica inferior a 25%. A elevada diversidade da ?rea estudada ? reflexo da sua alta heterogeneidade ambiental, relacionada a diferen?as na altitude, orienta??o de encosta, est?gio sucessional e hist?rico de uso, o que coloca a Maci?o da Pedra Branca como ?rea estrat?gica para conserva??o de esp?cies do munic?pio do Rio de Janeiro.

Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-06-07T14:26:09Z No. of bitstreams: 1 2015 - Tassia Torres Furtado.pdf: 14895763 bytes, checksum: 7d611b6398d83fa875abc58ca88acab3 (MD5) / Made available in DSpace on 2017-06-07T14:26:09Z (GMT). No. of bitstreams: 1 2015 - Tassia Torres Furtado.pdf: 14895763 bytes, checksum: 7d611b6398d83fa875abc58ca88acab3 (MD5) Previous issue date: 2015-02-27 / The ascomycete yeast C.guttulatus, has long been recognized as a component of the normal microflora of rabbits and other herbivores. More recently, a possible association between this yeast and gastro-intestinal illness in dogs has been reported by researchers in Europe, EUA, Japan and Brazil. The current study combined morpho-phenotypic and molecular (PCR-RFLP and nucleotide sequencing), methods to examine C.guttulatus cultures recovered from Brazilian rabbits (15 isolates) and dogs (7 isolates), with the objectives of developing a means for the differential identification of C. guttulatus and to improve existing knowledge of the biology of this organism. Microscopic and macroscopic examination of isolated colonies in combination with zymogram analysis (carbohydrate fermentation tests), was unable to provide a definitive identification for the suspect cultures. In silico restriction fragment length polymorphism (RFLP) analysis of virtual PCR amplicons (corresponding to the D1-D2 domain of the gene encoding 26S ribosomal RNA of C.guttulatus and other yeast species known to be associated with dogs), indicated that digestion with the restriction enzymes DdeI, HaeIII and MspI would allow the differential identification of C. guttulatus. In vitro restriction analysis of PCR amplicons confirmed the predictions of the in silico analysis and demonstrated that differential identification of C.guttulatus could be a made using only two enzymes (DdeI and MspI). Sequencing of D1-D2 amplicons demonstrated the presence of substantial nucleotide variation within the cultures examined and divided them into three groups, denominated sequence types (ST?s). Two of these groups were closely related to each other. The third sequence type showed extensive nucleotide variation and may represent a novel species or subspecies within the genus Cyniclomyces / A levedura, Cyniclomycesguttulatus ? um ascomiceto e tem sido reconhecida como um componente da microbiota natural de coelhos e outros herb?voros. Mais recentemente, uma poss?vel associa??o entre esta levedura e doen?as gastrintestinais em c?es tem sido relatada por pesquisadores na Europa, EUA, Jap?o e Brasil. O presente estudo combinou m?todos de an?lises morfol?gica e molecular (PCR-RFLP e sequenciamento de nucleot?deos), para examinar culturas de C. guttulatus recuperados de coelhos brasileiros (15 isolados) e c?es (7 isolados), com o objetivo de desenvolvimento de um m?todo para a identifica??o diferencial de C. guttulatus e melhorar o conhecimento existente sobre a biologia desse organismo. O exame microsc?pico e macrosc?pico das col?nias isoladas em combina??o com an?lise do zimograma (testes de fermenta??o de carboidratos), n?o foi capaz de fornecer uma identifica??o definitiva para as culturas suspeitas. As an?lises in silico de polimorfismo de comprimento de fragmentos de restri??o (RFLP) de produtos de PCR virtuais (correspondentes ao dom?nio D1/D2 do gene 26S RNA ribossomal de C.guttulatus e outras esp?cies de levedura conhecidas como associadas a c?es), indicou que a digest?o com a enzimas de restri??o Ddel, HaeIII e MspI permitiria a identifica??o diferencial de C. guttulatus. As an?lises das digest?es in vitro de produtos de PCR confirmaram as previs?es das an?lises in silico e demonstrou que a identifica??o diferencial de C.guttulatus poderia ser feita usando apenas duas enzimas (DdeI e MspI). O sequenciamento dos produtos de PCR do dom?nio D1/D2 demonstraram a presen?a de varia??es substanciais de nucleot?deos nas culturas analisadas e estas foram divididas em tr?s grupos, denominados de sequ?ncias tipos (ST's). Dois destes grupos estavam estreitamente relacionados uns aos outros. O terceiro tipo de sequ?ncia mostrou grande varia??o de nucleot?deos e pode representar uma nova esp?cie ou subesp?cie dentro do g?nero Cyniclomyces

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-07-28T13:42:46Z No. of bitstreams: 1 2011 - Luciano Martins.pdf: 2085328 bytes, checksum: e82ea56c9ce66ac46b97ad748fb1de5a (MD5) / Made available in DSpace on 2016-07-28T13:42:46Z (GMT). No. of bitstreams: 1 2011 - Luciano Martins.pdf: 2085328 bytes, checksum: e82ea56c9ce66ac46b97ad748fb1de5a (MD5) Previous issue date: 2011-02-25 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / This study aims to compare three sampling techniques to estimate species richness of ants (Hymenoptera: Formicidae) in ?campos of altitude? at Itatiaia National Park, in Rio de Janeiro state. Compared richness estimates for genera and species, and curves of accumulation of species for sardine baits, pitfall traps and manual collecting are presented for two distinct sites ("steppe vegetation" [VE] and "rupicola vegetation" [VR]) in Itatiaia Plateau. The three techniques collected 31 species of 10 genera belonging to four subfamilies. In VE were registered 50% of genera and 36.4% of species collected exclusively by baits, and 20% and 50% by pitfall traps, respectively. In VR were registered 37.5% of genera and 47.61% of species exclusive for baits, but no one genus and species was restricted for manual collecting. In the case of ?campos de altitude? and when only one technique can be used, the sardine bait was the most efficient sample technique to registered richness at VE. For VR, the manual collecting was the most appropriate technique to record species richness. However, the pitfalls (in VE) and bait (in VR) recorded an important portion of species richness. In our data, the manual collecting were associated with standardized data collecting protocols, and, although much criticized, have shown effectiveness in recording species in habitats where widespread techniques cannot be used. In spite of different physiognomies show differentiated efficiency for samples techniques, it is relevant to using more than one technique associated to a colleting protocol well structured to potentiated the record of the new species in environments as the ?campos de altitude?. / O presente trabalho tem por objetivo comparar tr?s t?cnicas de coleta para estimar a riqueza de esp?cies de formigas (Hymenoptera: Formicidae) no Planalto do Itatiaia , Rio de Janeiro, Brasil. S?o apresentados dados comparativos das estimativas da riqueza de g?neros, de esp?cies e as curvas de acumula??o de esp?cies amostradas com iscas de sardinha, armadilhas de queda e coletas manuais, em duas fisionomias distintas (?vegeta??o est?pica? [VE] e ?vegeta??o rup?cola? [VR]), no Planalto do Itatiaia. Com a utiliza??o das tr?s t?cnicas foram coletadas 30 esp?cies de 11 g?neros, pertencentes a quatro subfam?lias. Para a VE foram registrados 50% dos g?neros e 36,4% das esp?cies coletadas exclusivamente pelas iscas, e 20% e 50% pela armadilha de queda, respectivamente. Para a VR foram registrados 37,5% e 47,61% dos g?neros e esp?cies exclusivas para iscas, por?m nenhum g?nero e esp?cie foram restritos a coleta manual. Em se tratando de ecossistema de campos de altitude e quando apenas uma das t?cnicas possa ser utilizada, a isca de sardinha foi a mais eficiente para amostrar a riqueza em VE. Para VR, a coleta manual se apresentou como a t?cnica mais apropriada para registrar sua riqueza. No entanto, as armadilhas de queda (na VE) e as iscas (na VR) registraram uma parcela n?o t?o desprez?vel da riqueza. Em nossos dados, as coletas manuais foram associadas a protocolos de coleta padronizados, e, apesar de serem bastante criticadas, mostraram efici?ncia no registro de esp?cies em habitats em que outras t?cnicas mais difundidas n?o podem ser utilizadas. Apesar de fisionomias distintas apresentarem efici?ncia de t?cnica de coleta diferenciada, ? relevante a utiliza??o das tr?s t?cnicas para se potencializar ainda mais o registro das esp?cies em ambientes de campos de altitude.

Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2016-08-08T11:37:07Z No. of bitstreams: 1 2010 - Rodney kozlowiski de Azevedo.pdf: 3579688 bytes, checksum: 3baae7dd721eab10e68db71bdf0e32da (MD5) / Made available in DSpace on 2016-08-08T11:37:07Z (GMT). No. of bitstreams: 1 2010 - Rodney kozlowiski de Azevedo.pdf: 3579688 bytes, checksum: 3baae7dd721eab10e68db71bdf0e32da (MD5) Previous issue date: 2010-02-26 / Funda??o Carlos Chagas Filho de Amparo ? Pesquisa do Estado do RJ, FAPERJ. / The Guandu River is the most important source of water supply for the municipality of Rio de Janeiro and Baixada Fluminense. It is characterized as the river system that has the greatest diversity of fish and the largest biomass of the Basin of the Sepetiba Bay. From April 2003 to September 2009 786 fish specimens, belonging to 21 species from the Guandu River, near the dam of water treatment station (WTS) (22? 48' 32"S, 43? 37'35"W), State of Rio de Janeiro, were collected and analyzed to study the biodiversity of their metazoan parasites, considering the strategic importance of this river in the State of Rio de Janeiro. Seventy percent of the fish were parasitized by at least one metazoan parasite. Of the parasites found 55% were endoparasites and 45% were ectoparasites. A total of 81 parasite species were found, belonging to nine groups: Acanthocephala, Cestoda, Crustacea, Digenea, Hirudinea, Mollusca, Monogenea, Myxozoa and Nematoda. The monogeneans had higher species richness and the metacercariae and nematode larvae had the lowest host specificity. The results of this study indicate that the parasite communities of fishes from Guandu River were characterized by low richness and evenness, isolationist communities and higher values of taxonomic diversity in species of omnivorous fish and in species that forming schools. In this study were made 38 new host records and 25 new locality records, demonstrating the biological diversity of Guandu River. / O Rio Guandu ? a mais importante fonte de abastecimento de ?gua para o munic?pio do Rio de Janeiro e parte da Baixada Fluminense. Caracteriza-se como o sistema fluvial que det?m a maior diversidade de peixes e a maior biomassa da bacia hidrogr?fica da Ba?a de Sepetiba. Entre o per?odo de abril de 2003 a setembro de 2009 foram coletados e analisados 786 esp?cimes de peixes, pertencentes a 21 esp?cies, provenientes do rio Guandu, pr?ximo ? barragem da Esta??o de tratamento de ?gua (ETA) (22?48?32?S, 43?37?35?W), Estado do Rio de Janeiro, com o objetivo de estudar a biodiversidade dos seus metazo?rios parasitos. Setenta por cento dos peixes estava infectado/infestado por pelo menos uma esp?cie de metazo?rio parasito. Do total de parasitos encontrados 55% foram endoparasitos e 45% foram ectoparasitos. Um total de 81 esp?cies de parasitos foi encontrado, pertencentes a nove grupos: Acanthocephala, Cestoda, Crustacea, Digenea, Hirudinea, Mollusca, Monogenea, Myxozoa e Nematoda. Os monogen?ticos apresentaram maior riqueza de esp?cies e as metacerc?rias e as larvas de nemat?ides apresentaram a mais baixa especificidade parasit?ria. Os resultados obtidos no presente trabalho indicam que as comunidades parasit?rias dos peixes do rio Guandu foram caracterizadas pela baixa riqueza e equitabilidade, por comunidades isolacionistas e pelos maiores valores de diversidade taxon?mica nas esp?cies de peixes on?voros e que formam cardumes. No presente estudo foram feitos 38 novos registros de hospedeiro e 25 novos registros de localidade, o que demonstrou a diversidade biol?gica do rio Guandu