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Search Results: 1 - 10 of 48788 matches for " Ana Cláudia Vieira "
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Jumping ability in the arboreal locomotion of didelphid marsupials
Delciellos,Ana Cláudia; Vinícius Vieira,Marcus;
Mastozoolog?-a neotropical , 2009,
Abstract: didelphid marsupials are considered to cross discontinuities between arboreal supports using a cautious locomotion, using the prehensile tail as fifth limb. however, this ability was only described for caluromys philander. we describe and compare the locomotory performance and postural behavior of seven species of didelphid marsupials crossing discontinuities between artificial supports representing arboreal gaps. individuals were captured in areas of atlantic forest in rio de janeiro state, brazil. animals were stimulated to jump from a fixed horizontal support one meter above the ground to an inclined support of same diameter. we measured the maximum distance of jump (40, 60, 80 or 100 cm) and reach or distance actually reached by the jump. arboreal species (marmosops incanus, gracilinanus microtarsus, micoureus paraguayanus, and c. philander) jumped longer distances and had longer relative reach in jumps than semi-terrestrial species (didelphis aurita, and philander frenatus). only the specialized terrestrial metachirus nudicaudatus did not jump in the tests. the relation between absolute reach and body size was weak and non significant. this study did not corroborate the view that didelphid marsupials cross discontinuities between arboreal supports only through a cautious locomotion, without jumping. on the contrary, we identified patterns of jumping performance and behavior of didelphid marsupials related to their use of the vertical strata.
ECOMORPHOLOGICAL MODELS FOR ARBOREAL VERTEBRATES: THE CASE OF THE MARSUPIAL PHILANDER FRENATA = MODELOS ECOMORFOLóGICOS PARA VERTEBRADOS ARBORíCOLAS: O CASO DO MARSUPIAL PHILANDER FRENATA
Ana Cláudia Delciellos,Marcus Vinícius Vieira
Holos Environment , 2002,
Abstract: Performance measurements can be used to infer the fundamental niche ofspecies, allowing predictions of habitat or resource use in the absence of species interactions. We propose a standard set of tests to measure locomotory performance of arboreal vertebrates, and a procedure to develop ecomorphological models based on performance tests and path analysis. The proposed tests simulate habitat features such as support diameter and incline. Models of relationships between variables can be formulated, compared with path analysis, and the model of best fit chosen. This procedure was applied to the didelphid marsupial Philander frenata, comparing the effect of body shape on stride length and frequency in arboreal walking. The model includingpaths to stride length and frequency had a significant better fit than the model with paths only to stride length. An a posteriori model - obtained from the elimination of nonsignificant paths – suggested that the relative length of claws and tail were the moredeterminant of stride frequency, whereas stride length was more affected by the relative length of the limbs. These are hypotheses about an important aspect of the fundamental niche of didelphid marsupials, allowing inferences of niche similarity based on orphology. Independent data are necessary to test these hypotheses. = Medidas de desempenho utilizadas podem fornecer uma medida do nichofundamental, permitindo prever uso do habitat ou recursos na ausência de intera es entre espécies. Propomos um conjunto padr o de testes de desempenho locomotor para vertebrados arborícolas, e um método para desenvolver modelos ecomorfológicos baseados em testes de desempenho e análise de caminhos. Os testes propostos simulamcaracterísticas do habitat como diametro e orienta o de suportes. Modelos de rela es entre variáveis podem ser formulados e comparados através da análise de caminhos, permitindo escolher o modelo de melhor ajuste aos dados. Este procedimento foi aplicado ao marsupial Philander frenata, comparando-se o efeito da forma corporal sobre ocomprimento e freqüência de passadas no andar arborícola. O modelo incluindo caminhos tanto para freqüência como para comprimento de passadas teve um ajuste significativamente melhor que o modelo com caminhos apenas para o comprimento das passadas. Um modelo gerado a posteriori, a partir da elimina o de caminhos n osignificativos,sugere que o comprimento relativo das garras e da cauda s o as variáveis que mais influenciam a freqüência de passadas, enquanto o comprimento das passadas é mais afetado pelo comprimento relativo dos me
JUMPING ABILITY IN THE ARBOREAL LOCOMOTION OF DIDELPHID MARSUPIALS
Ana Cláudia Delciellos,Marcus Vinícius Vieira
Mastozoolog?-a neotropical , 2009,
Abstract: Didelphid marsupials are considered to cross discontinuities between arboreal supports using a cautious locomotion, using the prehensile tail as fifth limb. However, this ability was only described for Caluromys philander. We describe and compare the locomotory performance and postural behavior of seven species of didelphid marsupials crossing discontinuities between artificial supports representing arboreal gaps. Individuals were captured in areas of Atlantic Forest in Rio de Janeiro State, Brazil. Animals were stimulated to jump from a fixed horizontal support one meter above the ground to an inclined support of same diameter. We measured the maximum distance of jump (40, 60, 80 or 100 cm) and reach or distance actually reached by the jump. Arboreal species (Marmosops incanus, Gracilinanus microtarsus, Micoureus paraguayanus, and C. philander) jumped longer distances and had longer relative reach in jumps than semi-terrestrial species (Didelphis aurita, and Philander frenatus). Only the specialized terrestrial Metachirus nudicaudatus did not jump in the tests. The relation between absolute reach and body size was weak and non significant. This study did not corroborate the view that didelphid marsupials cross discontinuities between arboreal supports only through a cautious locomotion, without jumping. On the contrary, we identified patterns of jumping performance and behavior of didelphid marsupials related to their use of the vertical strata.
AS FUN ES DA LINGUAGEM NOS CH@TS: O “INTERNETêS” NUMA ABORDAGEM FUNCIONALISTA
Ana Cláudia Guimar?es Vieira Silva,Lucas Santos Campos
Fólio : Revista de Letras , 2010,
Abstract: For a long time the communication has experienced a great process of evolution, which provides a large exchange between individuals. Today, great advances came about mainly due to information technology. Through these innovations new genres of texts come up at every moment to supply their communicative needs. It demands that we become updated and follow these changes, as well as we join to the process of digital literacy. Blogs, websites, chat rooms, forums, e-mails, among others, are the newest ways to interact with the contemporary world. The language used in these types of genres is known as Internetês. It is characterized by containing the codes and it is widely used by young people, who search for to innovating their ways of communication. So, this paper aims to analyze and understand the environment of Internet chat. Through a functionalist approach, we aim to identify and interpret the functions of language present in this environment of virtual communication.
Pênfigo Vulgar com Envolvimento Anal
Vieira,Ana Margarida; Cardoso,Cláudia; Gamito,élia; Alves,Ana Luísa; Oliveira,Ana Paula;
Jornal Português de Gastrenterologia , 2011,
Abstract: introduction: anal involvement in patients with pemphigus vulgaris has rarely been reported. we report a case of a 76-year-old woman with muco-cutaneous pemphigus vulgaris on systemic corticotherapy who started with hematochezia and anal pain associated with constipation and difficult defecation. flexible sigmoidoscopy was normal but proctologic examination revealed skin tags with multiple erosions. after local corticotherapy and normalization of bowel movements, healing of anal lesions was seen.
Health-Related Physical Fitness in Female Models  [PDF]
Salime Donida Chedid Lisboa, Rodrigo Sudatti Delevatti, Ana Carolina Kanitz, Thais Reichert, Cláudia Gomes Bracht, Alexandra Ferreira Vieira, Luiz Fernando Martins Kruel
Health (Health) , 2016, DOI: 10.4236/health.2016.82019
Abstract: The model profession uses the appearance for the representation of products and brands via events. For some individuals that are included in this medium, plus a laboral activity, modeling becomes a lifestyle, the search for the status and work opportunities turn a dream for a thousands of children and teenagers because the profession has particulars experiences. To win this, many girls change physical and eating behaviors which are harmful to health. The objective of this study was to analyze the health-related physical fitness in female models comparing them with non-models. The study was conducted at the Caxias do Sul, Rio Grande do Sul, Brazil. Participated of the study female runway and commercial models bokered in Cast One Models, with age between 15 - 25 years old. The non-models were students from public and private schools or university students. The health-related physical fitness, the physical activity levels and dietary intake were assessed of all participants. The data were described as mean and standard deviation. For comparison between models and non-models was used t independent test for variables normally distributed and U Mann-Whitney test for not normally distributed variables, adopting a level of significance (α) of 0.05. It was found difference in total energy between model group and non-model (GM: 1509.78 kcal, NM: 2292.51 Kcal; p = 0.014). There were no differences between groups in the others variables analyzed (p > 0.05). In conclusion, the profession model seems not interfere in variables that make up the health-related physical fitness.
Pênfigo Vulgar com Envolvimento Anal Pemphigus Vulgaris with Anal Involvement
Ana Margarida Vieira,Cláudia Cardoso,élia Gamito,Ana Luísa Alves
Jornal Português de Gastrenterologia , 2011,
Abstract: INTRODU O: O envolvimento anal em doentes com Pênfigo Vulgar tem sido raramente reportado. Apresentamos o caso de uma doente de 76 anos com diagnóstico de Pênfigo Vulgar muco-cutaneo, sob corticoterapia sistémica, que inicia quadro proctológico caracterizado por hematoquézias e proctalgia associado a obstipa o e dificuldade defecatória. A rectosigmoidoscopia flexível n o mostrou altera es, mas o exame proctológico revelou coroa de mariscas com múltiplas eros es, compatível com Pênfigo Vulgar anal. Após corticoterapia local e normaliza o do transito intestinal, verificou-se cicatriza o das les es anais. INTRODUCTION: Anal involvement in patients with Pemphigus Vulgaris has rarely been reported. We report a case of a 76-year-old woman with muco-cutaneous Pemphigus Vulgaris on systemic corticotherapy who started with hematochezia and anal pain associated with constipation and difficult defecation. Flexible sigmoidoscopy was normal but proctologic examination revealed skin tags with multiple erosions. After local corticotherapy and normalization of bowel movements, healing of anal lesions was seen.
Carbon Monoxide Targeting Mitochondria
Cláudia S. F. Queiroga,Ana S. Almeida,Helena L. A. Vieira
Biochemistry Research International , 2012, DOI: 10.1155/2012/749845
Abstract: Mitochondria present two key roles on cellular functioning: (i) cell metabolism, being the main cellular source of energy and (ii) modulation of cell death, by mitochondrial membrane permeabilization. Carbon monoxide (CO) is an endogenously produced gaseoustransmitter, which presents several biological functions and is involved in maintaining cell homeostasis and cytoprotection. Herein, mitochondrion is approached as the main cellular target of carbon monoxide (CO). In this paper, two main perspectives concerning CO modulation of mitochondrial functioning are evaluated. First, the role of CO on cellular metabolism, in particular oxidative phosphorylation, is discussed, namely, on: cytochrome c oxidase activity, mitochondrial respiration, oxygen consumption, mitochondrial biogenesis, and general cellular energetic status. Second, the mitochondrial pathways involved in cell death inhibition by CO are assessed, in particular the control of mitochondrial membrane permeabilization.
Carbon monoxide prevents hepatic mitochondrial membrane permeabilization
Cláudia SF Queiroga, Ana S Almeida, Paula M Alves, Catherine Brenner, Helena LA Vieira
BMC Cell Biology , 2011, DOI: 10.1186/1471-2121-12-10
Abstract: Herein, we show that CO prevents mitochondrial membrane permeabilization (MMP) in liver isolated mitochondria. Direct and indirect approaches were used to evaluate MMP inhibition by CO: mitochondrial swelling, mitochondrial depolarization and inner membrane permeabilization. Additionally, CO increases mitochondrial reactive oxygen species (ROS) generation, and their scavenging, by ?-carotene addition, decreases CO protection, which reveals the key role of ROS. Interestingly, cytochrome c oxidase transiently responds to low concentrations of CO by decreasing its activity in the first 5 min, later on there is an increase of cytochrome c oxidase activity, which were detected up to 30 min.CO directly prevents mitochondrial membrane permeabilization, which might be implicated in the hepatic apoptosis inhibition by this gaseoustransmitter.Carbon monoxide (CO) is usually considered a harmful and toxic molecule due to its high affinity to heme proteins. However, recent evidences show that low doses of CO can be cytoprotective, presenting several biological properties, namely, anti-apoptosis, anti-proliferation, anti-inflammation and vasodilatation [1]. Furthermore, CO is an endogenous product of heme degradation by heme-oxygenase (HO), generating free iron and biliverdin as by-products. In fact, HO system is essential for tissue response to diverse pathological contexts, aiming at restoring and/or maintaining cellular homeostasis [2].In hepatocytes and/or liver models, CO appears to act as an anti-apoptotic molecule. By stimulating ATP production, CO activates p38 MAPK signalling, preventing apoptosis in human hepatocytes [3]. CO rescues mice from fulminant hepatitis, presenting a marked reduction of TNF-alpha-induced apoptosis [4] or via NO generation [5]. In primary cultures of rat hepatocytes, CO limits cytotoxicity induced by glucose deprivation through suppression of ERK MAPK activation [6]. In an endotoxic shock model, CO protects hepatocytes from apoptosis by augment
Rela??o entre os achados da avalia??o audiométrica e das emiss?es otoacústicas em policiais militares
Guida, Heraldo Lorena;Sousa, Ariane Laís de;Cardoso, Ana Cláudia Vieira;
Arquivos Internacionais de Otorrinolaringologia , 2012, DOI: 10.7162/S1809-48722012000100010
Abstract: introduction: otoacoustic emissions can be an alternative for cochlear evaluation in noise induced hearing loss (nihl). objective: to investigate the correlation between the findings of audiometry results and distortion product otoacoustic emissions (dpoae) in the military police. method: from cross-sectional and retrospective study, 200 military police officers were submitted to audiological evaluation - pure tone audiometry and dpoae. results: considering the provisions of ordinance 19 of the labour department, the results were suggestive of induced hearing loss by high sound pressure levels in 58 individuals, distributed as follows: 28 (48.3%) bilateral cases and 30 (51.7%) unilateral cases, and 15 (25.85%) in each ear. the correlation between the audiometric and dpoae showed statistical significance in most of the frequencies tested in both ears, confirming that the greater the degree of hearing loss, the smaller the dpoae amplitudes. in addition, there was observed significant difference between the dpoaes amplitudes of normal subjects and listeners with hearing loss, confirming the lowering of responses in the group with hearing loss. conclusion: considering that the correlation between pure tone audiometry and dpoae, we conclude that otoacoustic emissions can be a complementary tool for the detection and control of nihl in military police.
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