88 results on '"V. A. Teixeira"'
Search Results
2. Enhancing Results - Stimulation Impact on Pre-Salt Reservoirs Productivity
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D. N, Silva, additional, A. Z. I, Pereira, additional, C. T, Azevedo, additional, N. J, Denadai, additional, M. V. O, Scariot, additional, S. C, Kupski, additional, S, Medeiros, I., additional, M. P, Schwalbert, additional, V. L, Teixeira, additional, and A. F. M, Oliveira Jr., additional
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- 2024
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3. Lower Concentrations of Amphotericin B Combined with Ent-Hardwickiic Acid Are Effective against Candida Strains
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Maria V. Sousa Teixeira, Jennyfer A. Aldana-Mejía, Márcia E. da Silva Ferreira, and Niege A. J. Cardoso Furtado
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ent-hardwickiic acid ,amphotericin B ,antifungal combination ,Candida albicans ,Candida krusei ,checkerboard ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Life-threatening Candida infections have increased with the COVID-19 pandemic, and the already limited arsenal of antifungal drugs has become even more restricted due to its side effects associated with complications after SARS-CoV-2 infection. Drug combination strategies have the potential to reduce the risk of side effects without loss of therapeutic efficacy. The aim of this study was to evaluate the combination of ent-hardwickiic acid with low concentrations of amphotericin B against Candida strains. The minimum inhibitory concentration (MIC) values were determined for amphotericin B and ent-hardwickiic acid as isolated compounds and for 77 combinations of amphotericin B and ent-hardwickiic acid concentrations that were assessed by using the checkerboard microdilution method. Time–kill assays were performed in order to assess the fungistatic or fungicidal nature of the different combinations. The strategy of combining both compounds markedly reduced the MIC values from 16 µg/mL to 1 µg/mL of amphotericin B and from 12.5 µg/mL to 6.25 µg/mL of ent-hardwickiic acid, from isolated to combined, against C. albicans resistant to azoles. The combination of 1 µg/mL of amphotericin B with 6.25 µg/mL of ent-hardwickiic acid killed all the cells of the same strain within four hours of incubation.
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- 2023
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4. Effectiveness of Peer Instruction in a linear algebra class within an engineering curriculum.
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Katiuscia C. B. Teixeira, Eduardo V. O. Teixeira, Thomaz E. V. da Silva, João Cesar M. Mota, and Natalia C. Barroso
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- 2018
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5. Relationship between feed efficiency indexes and thermography, blood, and ruminal parameters in pre-weaning dairy heifers.
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C F A Lage, S G Coelho, H C Diniz Neto, V M R Malacco, J P P Rodrigues, J P Sacramento, V A Teixeira, F S Machado, L G R Pereira, T R Tomich, and M M Campos
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Medicine ,Science - Abstract
The objective of this study was to evaluate whether pre-weaning heifer calves divergent for residual feed intake (RFI) or residual feed intake and body weight gain (RIG) exhibit differences in thermography, blood, and ruminal parameters. Thirty-two Gyr heifer calves were enrolled in a 63-d trial and classified into 2 feed efficiency (FE) groups based on RFI and RIG (mean ± 0.5 SD). The groups were classified as high efficiency (HE) RFI (HE RFI, n = 9), HE RIG (HE RIG, n = 10), low efficiency (LE) RFI (LE RFI, n = 10), and LE RIG (LE RIG, n = 11). The amount of whole milk provided for each calf was calculated based on their metabolic weight at birth (42% x BW0.75). The liquid diet was divided into two meals at 0700 and 1400 h. The total solid diet (TSD) was composed of 92% concentrate and 8% of Tifton 85 hay chopped in 5-cm lengths, as fed. Intake was measured daily. Blood concentrations of insulin, beta hydroxybutyrate, urea, and glucose, and ruminal pH, N-NH3, and volatile fatty acids (VFA) were evaluated at 14, 28, 42, 56, and 70 days of age. Thermal images of the calves were taken with an infrared camera (FLIR T420, FLIR Systems Inc., Wilsonville, OR) on d 56 (±3) at 0600 h, before the morning feeding. Total VFA concentration and propionate as % of total VFA were 24.2% and 22.2% lower in HE RFI compared to LE RFI calves, respectively. On the other hand, acetate as % of total VFA was 10.6% greater in HE RFI than LE RFI calves. Blood urea concentration tended to be greater in LE RFI than HE RFI calves. High efficiency HE RIG tended to have 6.8% greater acetate and 15.4% lower propionate as % of total VFA than LE RIG. Blood insulin concentration was greater and blood glucose tended to be greater for LE RIG than HE RIG group. Low efficiency RIG group had greater left rib, left flank, and anus surface temperature measured by infrared thermography than the HE RIG group. Differences in ruminal fermentation do not seem to be associated with pre-weaning calves efficiency, while differences in protein metabolism seem to affect RFI during this phase. Infrared thermography appears to be correlated to RIG in pre-weaning heifer calves.
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- 2020
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6. Peer instruction methodology for linear algebra subject: A case study in an engineering course.
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Katiuscia C. B. Teixeira, Thomaz E. V. da Silva, João Cesar M. Mota, Natalia C. Barroso, and Eduardo V. O. Teixeira
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- 2015
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7. Generating Relational Descriptions Involving Mutual Disambiguation.
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Caio V. M. Teixeira, Ivandré Paraboni, Adriano S. R. da Silva, and Alan K. Yamasaki
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- 2014
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8. Generating Underspecified Descriptions of Landmark Objects.
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Ivandré Paraboni, Alan K. Yamasaki, Adriano S. R. da Silva, and Caio V. M. Teixeira
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- 2014
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9. Duplo Grau de Jurisdição Obrigatório
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D. V. M. TEIXEIRA
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- 2023
10. Evaluating analog arithmetic circuit for approximate computing with DNA strand displacement
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Renan A. Marks, Marcos V. Guterres, Poliana A. C. Oliveira, João V. C. Teixeira, and Omar P. Vilela Neto
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Computer science ,020208 electrical & electronic engineering ,Process (computing) ,Subtraction ,020206 networking & telecommunications ,02 engineering and technology ,Sense (electronics) ,Expression (mathematics) ,Insert (molecular biology) ,Surfaces, Coatings and Films ,Hardware and Architecture ,Simple (abstract algebra) ,Signal Processing ,0202 electrical engineering, electronic engineering, information engineering ,Multiplication ,Arithmetic ,Electronic circuit - Abstract
Approximate computing stands out in systems in which the simplicity must be above the demand for high precision and processing speed. It is the case of DNA systems, especially those based on the DNA strand displacement technique, which is naturally in a complex and noise-filled environment. In this sense, proposals for approximate DNA circuits implemented with an analog approach promise future disease diagnosis applications, for example. In this paper, we adapted a multiplication gate presented in the literature in order to reduce the influence of leak reactions. For this, we insert drain species after some time at the beginning of the process. Next, we built a DNA analog circuit using the multiplication gate with the extended addition and subtraction gates, proposed earlier, to solve a simple expression. The results showed that our modification significantly reduced the effects of leaks and the implemented circuit has an adequate accuracy with an acceptable error when their inputs species present median concentrations.
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- 2021
11. Efeito da enrofloxacina sobre a interação blastocisto endométrio e seu reflexo no desenvolvimento placentário e fetal em ratas
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I.M.F. Melo, W.E. Silva, A.A.C. Teixeira, V. Wanderley-Teixeira, S.B.F.P. Barreto, C.J.C. Lapa Neto, and F.M. Andrade
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enrofloxacina ,prenhez ,placenta ,imuno-histoquímica ,reprodução ,Animal culture ,SF1-1100 - Abstract
Estudos têm mostrado efeitos tóxicos da enrofloxacina em diversos tecidos. Assim, testou-se a hipótese de que a enrofloxacina pode interferir no desenvolvimento placentário e gerar efeitos adversos ao feto. A enrofloxacina (Baytril(r)) foi administrada em ratas, na dose de 5mg/kg, diariamente, IM, durante toda a gestação. As placentas foram analisadas morfologicamente, morfometricamente e imuno-histoquimicamente aos sete, 14 e 21 dias de prenhez. Os resultados mostraram que a enrofloxacina reduziu o número de sítios de implantação, o peso e a área total do disco placentário aos 14 e 21 dias de desenvolvimento, além dos elementos constituintes da placenta. A análise histoquímica não revelou alterações significativas no teor de fibras colágenas, elásticas e reticulares. O teste de Tunel mostrou atividade apoptótica apenas nas placentas com 14 dias de desenvolvimento de ambos os grupos, sendo mais intensa no grupo tratado. Não foi observado nenhum indício de malformação na cabeça, no tronco e nos membros dos neonatos. No entanto, houve uma redução significativa no número e no peso dos neonatos no grupo tratado, porém sem afetar o seu comprimento. Assim, concluiu-se que a enrofloxacina administrada na dosagem de 5mg/kg durante prenhez em ratas interfere no número de embriões implantados e no desenvolvimento placentário. Isto sugere cautela na administração da enrofloxacina durante a gestação, pois a exposição contínua a esse antibiótico pode ter reflexos na redução do número e do peso da prole.
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- 2014
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12. Efeito da dexametasona e melatonina exógenas sobre parâmetros sanguíneos, progesterona, carboidratos totais e histomorfometria de órgãos em ratas prenhes
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S.B. Silva, A.F. Soares, V. Wanderley-Teixeira, A.A.C. Teixeira, P.E.A. Vilaça-Júnior, and M.T.J.A. Castanho
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ratas ,melatonina ,glicocorticoide ,hemograma ,gestação ,Animal culture ,SF1-1100 - Abstract
A dexametasona é utilizada em casos de gestação com risco de prematuridade; porém, doses suprafisiológicas podem afetar a embriogênese. A melatonina tem demonstrado prevenir efeitos deletérios dos glicocorticoides. Assim, avaliamos a influência da melatonina sobre efeitos da dexametasona em ratas prenhes através dos seguintes parâmetros: 1. Hemograma e perfil glicídico; 2. Níveis de progesterona; e 3. Histomorfometria e histoquímica. Foram utilizadas 20 ratas divididas nos grupos: I - ratas prenhes que receberam placebo (Controle); II - ratas prenhes tratadas com dexametasona (0,8mg/kg); III - ratas prenhes tratadas com melatonina (0,5mg/kg); IV - ratas prenhes tratadas com dexametasona e melatonina. Todos os tratamentos foram iniciados 10 dias após confirmação do acasalamento até o final da prenhez. O sangue foi coletado no 7º, 14º e 21º dia de prenhez. As dosagens de carboidratos e progesterona foram realizadas pelo método antrona e ELISA, respectivamente. O fígado, rins e adrenais foram analisados histoquímica e morfometricamente. No 7º dia de prenhez, não houve alteração significativa nos parâmetros analisados. Porém, no 14º dia de prenhez, houve aumento significativo do volume de hematócrito, redução do número total de hemácias e leucócitos, neutrofilia, linfopenia, eosinopenia e redução do diâmetro das hemácias nas matrizes tratadas com dexametasona. Esses efeitos permaneceram no 21º dia de prenhez, exceto para o hematócrito, o qual reduziu. Verificou-se ainda redução significativa dos níveis de glicose (21º dia de prenhez) e progesterona (14º e 21º dia de prenhez). Não houve alteração nos parâmetros morfométricos e histoquímico no fígado, rins e adrenais. A dexametasona na dosagem de 0,8mg/kg, administrada a partir do terço médio da prenhez, produz alterações hematológicas, bioquímicas e hormonais em ratas, sendo prevenidas pela melatonina; porém não afeta o fígado, rins e adrenais quanto aos parâmetros morfométricos e histoquímicos.
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- 2014
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13. Moda como linguagem
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Flávia V. S. Teixeira
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Style (visual arts) ,Conceptualization ,Aesthetics ,business.industry ,Proposition ,Sociology ,Identification (psychology) ,Clothing ,business ,Relation (history of concept) ,Raising (linguistics) ,Plural - Abstract
Este artigo apresenta o conceito da partilha do sensível, do livro homônimodo filósofo contemporâneo Jacques Rancière, com o intuito de produzir novas formas devisibilidade e enunciação da moda contemporânea a partir dos seus aspectos estéticos epolíticos. Mais do que um sistema comportamental, a moda aqui será tratada como umamanifestação da linguagem comunitária, passível de ser lida mediante seus modos de sociabilidadee os efeitos que produz. Iniciamos nossa discussão abordando os principaisconceitos que aproximam a moda da arte, principalmente no que diz respeito à sua superfícieimagética. Depois, guiamo-nos pela noção de estilo, para entender como certosprocessos criativos da moda foram aprisionados pela ideia da homogeneização dos corpospor meio da linguagem. Aqui, mostramos a campanha I speak my truth, lançada em2019, pela marca de roupas Calvin Klein. Finalmente, colocamos a moda no plural e juntoda proposição da filosofia estética, lançamo-nos para uma conceituação das imagens emrelação aos seus processos de identificação, mediante os regimes ético, representativo eestético, em uma aproximação entre arte, moda e filosofia.
- Published
- 2021
14. Uso da espectroscopia de infravermelho próximo com Transformada de Fourier (FT-NIR) para acompanhar o processo de Tristeza Parasitária Bovina / Use of near-infrared spectroscopy with Fourier Transform (FT-NIR) to accompany the Bovine Parasitic Sadness process
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Leandro da Conceição Luiz, Mariana Magalhães Campos, Jose Luiz Bellini Leite, Luiz Gustavo Ribeiro Pereira, Thierry Ribeiro Tomich, Maria José Valenzuela Bell, V. Anjos, and V. A. Teixeira
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Veterinary medicine ,Chemistry ,Near-infrared spectroscopy ,Beef cattle ,medicine.disease ,Disease control ,symbols.namesake ,Fourier transform ,symbols ,medicine ,Herd ,General Earth and Planetary Sciences ,Anaplasmosis ,Daily routine ,General Environmental Science ,Open air - Abstract
Cattle are animals that stay in the herd for a large period of the day in the open air pasture. This daily routine leaves them exposed and susceptible to infectious diseases. One of them is the Bovine Parasitic Sadness which is considered one of the greatest cattle health problems due its high rate of mortality and morbidity. In this work preliminary results are presented from calf inoculated with anaplasmosis. Blood samples were collected and analyzed through Fourier Transform Near Infrared spectroscopy (FT-NIR). The animal was monitored for 60 days until its recovery. This exploratory work shows the potentiality of the FT-NIR in the detection, follow-up and recovery of the anaplasmosis. The possibility of prevention of this disease in the herd via a fast optical analysis may bring a great breakthrough in disease control in dairy and beef cattle.
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- 2021
15. Structure-activity relationship, molecular docking, and molecular dynamic studies of diterpenes from marine natural products with anti-HIV activity
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Leonardo Alves Miceli, V L Teixeira, N P de Souza, Carlos Rangel Rodrigues, Alessandra Mendonça Teles de Souza, Mariana M. J. Ribeiro, N L vonRanke, Bárbara Abrahim-Vieira, and Helena Carla Castro
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chemistry.chemical_classification ,Biological Products ,0303 health sciences ,Conformational change ,Quantitative structure–activity relationship ,Molecular model ,Anti-HIV Agents ,Chemistry ,In silico ,030303 biophysics ,Allosteric regulation ,Quantitative Structure-Activity Relationship ,General Medicine ,Computational biology ,Molecular Dynamics Simulation ,Reverse transcriptase ,Molecular Docking Simulation ,Structure-Activity Relationship ,03 medical and health sciences ,Enzyme ,Structural Biology ,Structure–activity relationship ,Diterpenes ,Molecular Biology - Abstract
HIV-1 infection is a global epidemic whose treatment is limited majorly by viral resistance and adverse effects. Natural products from algae have been studied for many years, including antiviral, being an alternative to anti-HIV drug design. Since the isolation of natural products can be a hurdle, molecular modeling is an important tool to study these compounds. Herein, structure-activity relationship, molecular docking, and molecular dynamic studies were performed to direct the studies of ten marine natural products with anti-HIV activity. In the structure-activity relationship, descriptors were identified associating the anti-HIV activity of five diterpenes with possible action on the reverse transcriptase allosteric site. These diterpenes were evaluated by molecular docking, and it was identified that only dolabelladienetriol interacted in the allosteric site. Molecular dynamics suggested that the dolabelladienetriol might interfere with the viral RNA binding to HIV-1 RT by inducing a conformational change of the enzyme. Also, in silico ADMET simulations predicts that the dolabelladienetriol present a high potential to be successfully developed as a drug. Thus, applying in silico approaches was possible to suggest potential anti-HIV compounds derived from marine natural products.Communicated by Ramaswamy H. Sarma.
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- 2020
16. Heat transfer enhancement of two-phase droplet flow in microtube: a phase-field simulation study
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V. C. Teixeira, F. S. Forte Neto, G. M. Guerra, and A. G. B. da Cruz
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Mechanical Engineering ,Applied Mathematics ,Automotive Engineering ,General Engineering ,Aerospace Engineering ,Industrial and Manufacturing Engineering - Published
- 2022
17. Ação da melatonina sobre a dinâmica sanguínea de ratas prenhes e sobre a histogênese do baço e do timo da prole The action of melatonin on the blood dynamics of pregnant rats and on the histogenesis of the spleen and thymus of offspring
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A.C.C. Araújo, V. Wanderley-Teixeira, P.E.A. Vilaça-Junior, A.F. Soares, A.J.J.M. Lemos, F.C.A. Silva, and A.A.C. Teixeira
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rato ,melatonina ,hemograma ,prenhez ,órgãos de defesa ,imunidade ,rat ,melatonin ,hemogram ,pregnancy ,defense organs ,immunity ,Animal culture ,SF1-1100 - Abstract
Investigou-se a influência da melatonina sobre o hemograma de ratas prenhes e dos filhotes e sobre a histogênese e morfometria do baço e do timo dos filhotes. A melatonina foi administrada na dose 0,5mg/kg de peso corporal, dissolvida em 0,1mL de etanol e diluída em 0,3mL de solução salina. Para análise do hematócrito, contagem total de hemácias e contagem total e diferencial dos leucócitos, amostras de sangue foram coletadas no sétimo, 14ºe 21ºdias de prenhez e aos 10 dias de nascimento dos filhotes. Cortes histológicos do baço e do timo da prole foram utilizados para histoquímica e morfometria. A ausência da melatonina promoveu alterações no hemograma apenas no terço final da gestação, sem interferir no hemograma dos filhotes, e induziu modificações morfológicas e morfométricas no timo e no baço nos primeiros dias de vida dos filhotes. Concluiu-se que a melatonina materna é importante para a modulação do hemograma em ratas prenhes e para o desenvolvimento normal do baço e do timo dos filhotes.We investigated the influence of melatonin on the hemogram of pregnant rats and puppies, and on the histogenesis and morphology of the spleen and thymus of puppies. Melatonin was administered at a dose 0.5mg/kgbody weight, dissolved in 0.1mL of ethanol and diluted in 0.3mL of saline. For hematocrit analysis, total erythrocyte count and total and differential leukocyte count, blood samples were collected on the 7th, 14th and 21st days of pregnancy and the offspring at 10 days of birth. Histological sections of spleen and thymus of the offspring were used for histochemistry and morphometry. The absence of melatonin promoted changes in blood count only in the final third of gestation, without interfering with the hemogram of the puppies, and induced morphological and morphometric changes in the thymus and spleen in the first days of life of the puppies. It was concluded that maternal melatonin is important for the modulation of the blood count in pregnant rats and the normal development of the spleen and thymus of the offspring.
- Published
- 2013
18. A COMPARATIVE STUDY ON CANDU 6 REACTOR CRITICALITY THROUGH MCNPX AND SCALE 6.0 CODES
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Gustavo V. C. Teixeira, Michel C. B. de Almeida, Clarysson A. M. da Silva, and Claubia Pereira
- Published
- 2022
19. A INFLUÊNCIA DE NICHOLAS SPYKMAN NAS RELAÇÕES CONTEMPORÂNEAS ENTRE EUA E RÚSSIA: UMA ANÁLISE SOBRE A IMPORTÂNCIA GEOPOLÍTICA DA UCRÂNIA
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H. F. BRIGOLA and V. M. TEIXEIRA
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- 2022
20. Efeito da administração pré-natal da dexametasona em ratas sobre os perfis glicídicos e hematológicos materno e da prole
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P.E.A Vilaça-Junior, A.F. Soares, V. Wanderley-Teixeira, A.C.C. Araújo, and A.A.C Teixeira
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rato ,dexametasona ,características hematológicas ,carboidratos ,fígado ,Animal culture ,SF1-1100 - Abstract
Avaliou-se o efeito da administração de dexametasona no início e no meio da gestação de ratas, sobre os perfis glicídicos e hematológicos materno e da prole. Os animais foram submetidos aos seguintes tratamentos: dexametasona do primeiro ao sétimo dia e placebo do oitavo ao 14º dia; placebo do primeiro ao sétimo dia e dexametasona do oitavo ao 14º dia; dexametasona do primeiro ao 14º dia e placebo do primeiro ao 14º dia de gestação. A dexametasona foi administrada por via intraperitoneal, na dose de 0,8mg/kg. Foram coletadas amostras de sangue no sétimo, 14º e 21º dias de gestação, e de sangue e tecido hepático da prole no quinto, 10º e 15º dias pós-natal. Para a verificação das reservas de glicogênio hepático da prole, cortes histológicos foram corados pelo ácido periódico de Schiff. Os resultados apontam para um efeito tempo-dependente da administração de dexametasona durante a gestação, levando a alterações temporais distintas na hematologia e na concentração plasmática de carboidratos nas matrizes e na prole.
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- 2012
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21. Seleção de animais resistentes ao parasitismo
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I. A. CIPRIANO, G. M. FAVARE, M. O. MENA, T. A. CARMO, G. J. GUELPA, C. V. S. TEIXEIRA, and R. V. G. SOUTELLO
- Abstract
O uso indiscriminado de anti-helmínticos tem acarratado o aumento de relatos de resistência a esses fármacos. Sendo assim, existe uma busca promissora de alternativas para o controle de parasitas e redução do uso de antiparasitários, como por exemplo, a seleção de animais resistentes. A resistência aos parasitas é a habilidade de suprimir o estabelecimento e/ou subsequente o desenvolvimento da infecção causada pelos vermes, e resiliência, quando o animal suporta a verminose, porém sem comprometimentos na produtividade. A quantificação da carga parasitária é a forma mais precisa de se avaliar a resposta do hospedeiro frente à fonte de infecção, sendo que o método determinado para a identificação da resistência, dependerá de sua relação com a carga parasitária e de sua repetibilidade no estudo do genoma. Dessa forma, essa revisão bibliográfica abordará como a seleção dos animais resistentes é um método alternativo ao uso do genoma do hospedeiro que tem sido implantada para reduzir os prejuízos ocasionados pelos parasitas e assim, procriar animais naturalmente resistentes a endo e ectoparasitas.
- Published
- 2021
22. An Overview of Biotransformation and Toxicity of Diterpenes
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Ingrid P. de Sousa, Maria V. Sousa Teixeira, and Niege A. Jacometti Cardoso Furtado
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diterpenes ,biotransformation ,toxicity ,Organic chemistry ,QD241-441 - Abstract
Diterpenes have been identified as active compounds in several medicinal plants showing remarkable biological activities, and some isolated diterpenes are produced at commercial scale to be used as medicines, food additives, in the synthesis of fragrances, or in agriculture. There is great interest in developing methods to obtain derivatives of these compounds, and biotransformation processes are interesting tools for the structural modification of natural products with complex chemical structures. Biotransformation processes also have a crucial role in drug development and/or optimization. The understanding of the metabolic pathways for both phase I and II biotransformation of new drug candidates is mandatory for toxicity and efficacy evaluation and part of preclinical studies. This review presents an overview of biotransformation processes of diterpenes carried out by microorganisms, plant cell cultures, animal and human liver microsomes, and rats, chickens, and swine in vivo and highlights the main enzymatic reactions involved in these processes and the role of diterpenes that may be effectively exploited by other fields.
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- 2018
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23. A COMPARATIVE STUDY ON CANDU 6 REACTOR CRITICALITY THROUGH MCNPX AND SCALE 6.0 CODES
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V. C. Teixeira, Gustavo, primary, C. B. de Almeida, Michel, additional, A. M. da Silva, Clarysson, additional, and Pereira, Claubia, additional
- Published
- 2022
- Full Text
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24. Ecological roles of natural products of the Brazilian red seaweed Laurencia obtusa
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R. C. Pereira, B. A. P. da Gama, V. L. Teixeira, and Y. Yoneshigue-Valentin
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natural products ,Laurencia obtusa ,chemical defense ,herbivory ,fouling ,Science ,Biology (General) ,QH301-705.5 ,Zoology ,QL1-991 ,Botany ,QK1-989 - Abstract
Laboratory and field experiments were performed to assess the ecological roles of natural products produced by the Brazilian red seaweed Laurencia obtusa. Laboratory assays revealed that the natural concentration of the crude organic extract of L. obtusa significantly inhibited feeding by two herbivores: the crab Pachygrapsus transversus and the sea urchin Lytechinus variegatus. It was verified that this chemically defensive action was due to halogenated sesquiterpenoid elatol, found to be the major natural product of this red seaweed. In addition, it was verified that the antifouling property of the chemicals produced by L. obtusa could make this red alga less attractive for fish grazing. Direct protection against two herbivore species and indirect protection against herbivory by fouling inibition constitute evidence that the major natural product from Brazilian L. obtusa plays multiple environmental roles, thereby increasing the adaptive value of these metabolites. On the other hand, the evidence reinforces the idea that marine natural products may have different functions in the sea.
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- 2003
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25. Weak convergence under nonlinearities
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DIEGO R. MOREIRA and EDUARDO V. O. TEIXEIRA
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continuidade fraca ,não linearidades ,operador de Nemytskii ,weak continuity ,nonlinearities ,Nemytskii operator ,Science - Abstract
In this paper, we prove that if a Nemytskii operator maps Lp(omega, E) into Lq(omega, F), for p, q greater than 1, E, F separable Banach spaces and F reflexive, then a sequence that converge weakly and a.e. is sent to a weakly convergent sequence. We give a counterexample proving that if q = 1 and p is greater than 1 we may not have weak sequential continuity of such operator. However, we prove that if p = q = 1, then a weakly convergent sequence that converges a.e. is mapped into a weakly convergent sequence by a Nemytskii operator. We show an application of the weak continuity of the Nemytskii operators by solving a nonlinear functional equation on W1,p(omega), providing the weak continuity of some kind of resolvent operator associated to it and getting a regularity result for such solution.Neste artigo, provamos que se um operador de Nemytskii aplica Lp(ômega, E) no Lq(ômega , F), para p, q maiores do que 1, E, F espaços de Banach separáveis e F reflexivo, então uma seqüência que converge fracamente e q.t.p. é transformada em uma seqüência fracamente convergente. Fornecemos um contra-exemplo mostrando que se q = 1 e p é maior do que 1, podemos não ter continuidade seqüêncial de tal operador. Contudo provamos que se p = q = 1, então seqüências fracamente convergentes que convergem q.t.p. são aplicadas em seqüências fracamente convergentes por um operador de Nemytskii. Mostramos uma aplicação da continuidade fraca dos operadores de Nemytskii resolvendo uma equação funcional não linear no W1,p(ômega), provando a continuidade fraca de um tipo de operador resolvente associado ao operador de Nemytskii e obtendo um resultado de regularidade de tal solução.
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- 2003
- Full Text
- View/download PDF
26. Morphological and immunohistochemical study of the midgut and fat body ofSpodoptera frugiperda(J.E. Smith) (Lepidoptera: noctuidae) treated with essential oils of the genusPiper
- Author
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A C Agra Neto, Amanda Lins Bispo Monteiro, Daniela Maria do Amaral Ferraz Navarro, Cintia Giselle Martins Ferreira, Glaucilane dos Santos Cruz, A.A.C. Teixeira, Kamilla A. Dutra, Cristiane T.S. Silva, C. G. D´Assunção, C. J. C Lapa Neto, and V Wanderley Teixeira
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0301 basic medicine ,Fat body ,Piper ,Histology ,030102 biochemistry & molecular biology ,biology ,Plant composition ,Midgut ,General Medicine ,Spodoptera ,biology.organism_classification ,Lepidoptera genitalia ,03 medical and health sciences ,Medical Laboratory Technology ,0302 clinical medicine ,Genus ,030220 oncology & carcinogenesis ,Botany ,Noctuidae - Abstract
Essential oils are a promising alternative to insecticides. We investigated the LD50 of oils extracted from Piper corcovadensis, P. marginatum, and P. arboreum after 48 h topical contact with Spodo...
- Published
- 2019
27. Processos estruturais e a relevância da cooperação processual como instrumento para dar efetividade à execução das decisões estruturais
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L. A. de A. Albuquerk, V. A. Teixeira, and A. P. Bufulin
- Published
- 2021
28. Pediatria - Experiências Profissionais e Casos Clínicos - Volume 1
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Daniela O W Rodrigues, Maria T B Teixeira, Luiz C Ribeiro, Olivia F Santos, Lysla C Sudário, Dandara E M Sana, Estela M S Campos, Maria H A Leitao, Larissa M C Torres, Shirley C R B De Faria, Adriano R De Souza, Lúcio Petterson Tôrres da Silva, João A Da S, Joabson Araujo de Carvalho, Willian Da S Santos, Renan Rodrigues Ferreira Lima, João P Da Silva, André F De C P Chaves, Ellen C Da C L Sousa, Tatiane Carvalho da Silva Brandão, Bárbara M P De Almeida, Catarina N Nascimento, Danielli De S Guedes, Ellen A Santos, Eloah P Filippetti, Flaviane Rodrigues, Larissa R Santos, Rafael G F de Lima, Ana F S Ratti, Élvio L R Vieira, Cíntia R T Katz, Juliana A Cardoso, Amanda M F Barbosa, Maria C A Oliveira, Gheisa B Campos, Kairo S M Damasceno, Kayo E S Oliveira, Emilly D A Meggiolaro, Alice M Scheffer, Daniel G Oliveira, Dayeni M Romualdo, Karina V Nascimento, Leonardo B Bueno, Luiza S B Souza, Maísa F S Oliveira, Valério L Almeida, Kennedy M Oliveira, Waneska A Alves, Guilherme Pitol, Rafaela Paulino, Jaqueline G Bielavski, Bibiana B Barcellos, Gabriela T Maciel, Ana C Portz, Bruna C Venzke, Daniela F Santi, Bruna E T Dal Osto, Acauã F da Cunha, Ana L T de Quadros, Vinicius Andrade, Daniela W Batista, Mariana B Angeloni, Giuliana M Marchese, Jaqueline B Araújo, Amanda T de Sousa, Amaro J A, Bruno L dos Santos, Isabella C de O Lopes, Aline M Pires, Ana F F dos Santos, Beatriz M de Lima, Camila A G Santos, Fernanda C D Cruvinel, Gabriele R dos Santos, Jéssica Y S Soares, João P R Gonçalves, Joaquim E F, Shamara C Rezende, Wanessa F Muzetti, Érica R M A Rezende, Tatyana B C Kock, Anne C V Carvalho, Nicole O Rezende, Henrique A Binato, Marli C Cupertino, Monique P Reis, Onézimo M Bentes, Pedro F G Furtado, Ana E G Macêdo, Caroline G Macêdo, Dayane D Nascimento, Andressa R Pagno, Cristiane de P Kratz, Izabel A Alves, Eugênia M de Q F B da Silveira, Giovana B de M Rios, Ana B M Prata, Ana C A Aragão, Ana C M Ramalho, Márcia G M Coelho, Fernanda Pimentel de Oliveira, Neusa Camilla Cavalcante Andrade Oliveira, Jussilene Alves Amorim, Juliane M dos Santos, Suelen Rezende Barbosa, Mireli Sousa de Oliveira, Laiane M F Gentil, Viviane da Paz Brito, Edilene P da Silva, Elane de A Sampaio, Lígia V Leite, Mirella Raíra Ferreira da Silva Santos, Juliana Sampaio Melo, Karine R Ferreira, Danyele Holanda Da Silva, Larissa C Fontenelle, Rafael X B de Morais, André L B N dos Santos, Beatriz X B de Morais, João F C J Tavares, Maria M C J Tavares, Angela C R Medeiros, Gabriel F Grando, Laura B Delatorre, Luana B Bittencourt, Isadora B Teloken, Juliano P Bastos, Kátia C S de Oliveira, Henrique Scalco, Bruna K de Moura, Luana Carvalho, Nathalia S Gonçalves, Luiza Ribeiro, Emily S, Ana P Galeazzi, Manoela B Garcia, Anna B L Lima, Giulia Zanatta, Daniela C Santos, Fernanda P De Oliveira, Maria R Da S Lima, Maria J F Siqueira, Rosendo F de Amorim, Maria Raquel da Silva Lima, Márcia Gomes Marinheiro Coelho, Anna C F Duarte, Danielle C H França, Ana C B Galdino, Alexya O Feitosa, Beatriz B Ribeiro, Gabriel M Amorim, Isadora A Leite, Jéssica L F R Silva, Laís F S Silva, Lisiane V Oliveira, Rodolfo D A Silva, Mônica R B Galdino, Maria Cláudia M C Muniz, Paula F de Almeida, Jocélia Maria de A Bringel, Maria C S Freitas, Joyce H Maranhão, Suelen R Barbosa, Caio P Sena, Keylane N Ribeiro, Jussilene A Amorim, Evilla S R Silva, Larissa Cristina Fontenelle, Bruna K Yuasa, Carlos E Scorza, Amanda R M Silva, Diego H F Mussatto, Janaína M R Mombelli, Julia M Lara, Julyane N S Kaihara, Letícia S Alves, Pedro T Hamamoto, Andressa A F Bravin, Brenda Caroline Melo Sousa, Eloina Hadigyna Leite Sousa Campelo, Francisco Héricles Moreira de Carvalho, Valberto A M, Lorena P L M Barreto, Andressa A Barros, Alane S Sousa, Michely C Carvalho, Najarah C Cedro, Talita N Carvalho, Ennya C P dos S Duarte, Andrea G S Melo, Diêgo O Lima, Lívia P Costa, Maria K Z Oliveira, Nayane B Sousa, Paloma A F Lima, Rute E Rocha, Ruthe C Brito, Ana C do N Borges, Rita C S Vieira, Ana C N Borges, Ana Kallyny V Silva, Regiane M Tavares, Auricélia do N Marques, Ana Paula de S Alcantara, Jhennefy V S Lopes, Nailson S S de Sousa, Felipe S Rodrigues, Aline C Holanda, Crislane de M Costa, Marilene M Brito, Aline Carolina Castro Mota, Andrea M S Lopes, Carla Hineida da Silva de Andrade, Giulli Catarini Cei Ribeiro Lobo, Ianka A Silva, Mainã C S Santos, Salmeron A M, Yasmin A Santos, Carla Leonor Melo Vinagre Machado, Aline C C Mota, Ana L G Moura, Brenda P Farias, Fernanda Cristina de Oliveira Albuquerque, Giovana D Pereira, Joyce G M Lopes, Letícia C Andrade, Marcela M M Bezerra, Carla L M V Machado, Gilson G A, Isabelle C V Araújo, João P R Costa, Larissa F S Souza, Lorena Oliveira Gonçalves, Thais B O Silva, José W G C, Sara M Crispim, Jocélia M de A Bringel, Yohanna A M Monteiro, Natalya V S Teixeira, Camila F A Dias, André L S Pessoa, Luiz de M F, Juliana T de Q S Martins, Manoel C, Maria B R da Silva, aline lorena lourenço dos santos miranda, Catarina de J Nunes, Laura B D da S Souto, João M P F Nunes, Brenda F Carvalho, Cida V S da Silva, Naiara da L N Palmeira, Viviane Rech, Isabel S Araújo, Artemizia F Sousa, Paulo V L Sousa, Lais C Arraes, Rosana R Sousa, Fernanda Cabral Oliveira, Anna Luiza P Vieira, Gabriela S Martínez, Ana Beatriz T Borges, Edson L de Lima, and Eugênio F Magalhães
- Published
- 2020
29. Retratos literários: o corpo e a potência da moda nos diários escritos de Sophie Calle
- Author
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Silvia Michelle A.Bastos Barbosa and Flávia V. S. Teixeira
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Moda. Literatura. Retrato. Corpo. Ficção - Abstract
O presente artigo apresenta uma análise das relações entre a literatura e o retrato a partir da obra de Sophie Calle, considerando como a artista aponta para a potência a moda na criação do sujeito que se dá mediante a construção do corpo e de toda a sua extensão material. A obra Histórias reais, de Calle, será tomada como objeto de estudo com o objetivo de se pensar as questões relativas ao tempo, ao espaço e à imagem, destacando, sobretudo, os signos da moda que ali aparecem. Tais signos são realçados por peças do vestuário que apontam para esse potente plano de significação e de construção temporal, sempre mediado pelos objetos que dão vida ao corpo.
- Published
- 2020
30. Relationship between feed efficiency indexes and thermography, blood, and ruminal parameters in pre-weaning dairy heifers
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João Paulo Pacheco Rodrigues, H. C. Diniz Neto, Sandra Gesteira Coelho, Fernanda Samarini Machado, Thierry Ribeiro Tomich, Mariana Magalhães Campos, Luiz Gustavo Ribeiro Pereira, J. P. Sacramento, Victor Marco Rocha Malacco, V. A. Teixeira, and C.F.A. Lage
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Physiology ,Weight Gain ,Biochemistry ,Body Temperature ,chemistry.chemical_compound ,Endocrinology ,Medicine and Health Sciences ,Insulin ,Urea ,0303 health sciences ,Multidisciplinary ,Organic Compounds ,Thermogenesis ,Surface Temperature ,Ruminants ,04 agricultural and veterinary sciences ,Body Fluids ,Chemistry ,Blood ,Milk ,Physiological Parameters ,Thermography ,Physical Sciences ,Medicine ,Anatomy ,medicine.symptom ,Research Article ,Liquid diet ,Surface Properties ,Science ,Materials Science ,Material Properties ,Weaning ,Feed conversion ratio ,Beverages ,03 medical and health sciences ,Animal science ,medicine ,Animals ,Tifton ,Nutrition ,030304 developmental biology ,Diabetic Endocrinology ,Blood Cells ,Organic Chemistry ,Body Weight ,Chemical Compounds ,0402 animal and dairy science ,Biology and Life Sciences ,Feeding Behavior ,Animal Feed ,040201 dairy & animal science ,Hormones ,Diet ,chemistry ,Hay ,Cattle ,Propionates ,Residual feed intake ,Skin Temperature ,Energy Intake ,Weight gain - Abstract
The objective of this study was to evaluate whether pre-weaning heifer calves divergent for residual feed intake (RFI) or residual feed intake and body weight gain (RIG) exhibit differences in thermography, blood, and ruminal parameters. Thirty-two Gyr heifer calves were enrolled in a 63-d trial and classified into 2 feed efficiency (FE) groups based on RFI and RIG (mean ± 0.5 SD). The groups were classified as high efficiency (HE) RFI (HE RFI, n = 9), HE RIG (HE RIG, n = 10), low efficiency (LE) RFI (LE RFI, n = 10), and LE RIG (LE RIG, n = 11). The amount of whole milk provided for each calf was calculated based on their metabolic weight at birth (42% x BW0.75). The liquid diet was divided into two meals at 0700 and 1400 h. The total solid diet (TSD) was composed of 92% concentrate and 8% of Tifton 85 hay chopped in 5-cm lengths, as fed. Intake was measured daily. Blood concentrations of insulin, beta hydroxybutyrate, urea, and glucose, and ruminal pH, N-NH3, and volatile fatty acids (VFA) were evaluated at 14, 28, 42, 56, and 70 days of age. Thermal images of the calves were taken with an infrared camera (FLIR T420, FLIR Systems Inc., Wilsonville, OR) on d 56 (±3) at 0600 h, before the morning feeding. Total VFA concentration and propionate as % of total VFA were 24.2% and 22.2% lower in HE RFI compared to LE RFI calves, respectively. On the other hand, acetate as % of total VFA was 10.6% greater in HE RFI than LE RFI calves. Blood urea concentration tended to be greater in LE RFI than HE RFI calves. High efficiency HE RIG tended to have 6.8% greater acetate and 15.4% lower propionate as % of total VFA than LE RIG. Blood insulin concentration was greater and blood glucose tended to be greater for LE RIG than HE RIG group. Low efficiency RIG group had greater left rib, left flank, and anus surface temperature measured by infrared thermography than the HE RIG group. Differences in ruminal fermentation do not seem to be associated with pre-weaning calves efficiency, while differences in protein metabolism seem to affect RFI during this phase. Infrared thermography appears to be correlated to RIG in pre-weaning heifer calves.
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- 2020
31. Influência das condições de cultivo sobre a produção de óleo essencial do capim citronela (Cymbopogon nardus)
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V. L.S. Teixeira, Luiz C. A. Barbosa, K.A. S. Braga, Henrique Guilhon de Castro, and Antonio J. Demuner
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food and beverages ,Biomass ,Biology ,biology.organism_classification ,law.invention ,Horticulture ,chemistry.chemical_compound ,chemistry ,Productivity (ecology) ,law ,Citronellal ,General Earth and Planetary Sciences ,Cymbopogon nardus ,Gas chromatography ,Medicinal plants ,Hectare ,Essential oil ,General Environmental Science - Abstract
The production of active principles by medicinal plants can be influenced by the cultivation environment. The study of these conditions is essential to produce a better quality plant material. Thus, this paper aimed to evaluate the effect of the use of organic fertilization on the growth, on biomass production and on the essential oil content and composition of citronella grass (Cymbopogon nardus) under the edaphoclimatic conditions of Juiz de Fora-MG. The extraction of the essential oil was carried out through hydrodistillation using an adapted Clevenger equipment and the identification of the chemical compounds by gas chromatography coupled to mass spectrometry. The plants presented in the treatment with organic fertilizing, at 174 days of transplant, a production of fresh biomass of 1071.75 g plant-1, estimating a productivity of 21.44 t ha-1. The content of essential oil was of 1.06% in the treatment without fertilizing and 0.82% in the treatment with fertilizing. The technique of GC-MS allowed the identification of 14 chemical compounds in the citronella grass essential oil. The majority compounds of the oil were trans-β-geraniol, citronellal and β-citronellol. The results allow to estimate a productivity of volatile oil of 79.20 kg ha-1 for the treatment with fertilizing and 64.45 kg ha-1 for the treatment without fertilizing. In the first treatment a lower oil content and a higher production of biomass were obtained resulting in a higher production of essential oil for hectare.
- Published
- 2020
32. Caracterização macroscópica e microscópica da pododermatite em relação à classificação industrial de pés de frango para consumo humano
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Maria Helena Cosendey de Aquino, Rogério Tortelly, Elmiro Rosendo do Nascimento, V. L. A. Pereira, V. Q. Teixeira, and F. F. Santos
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0301 basic medicine ,pata ,General Veterinary ,chicken ,030106 microbiology ,04 agricultural and veterinary sciences ,Biology ,040401 food science ,Molecular biology ,03 medical and health sciences ,parts ,0404 agricultural biotechnology ,frango ,histopathology ,paw ,histopatologia ,lcsh:Animal culture ,dermatite ,cortes ,lcsh:SF1-1100 ,dermatitis - Abstract
RESUMO O presente trabalho teve como objetivo identificar e classificar a pododermatite em frangos de corte, comparando as lesões microscópicas com os aspectos macroscópicos utilizados pela inspeção sanitária. Foi realizada coleta de pés de frangos de corte, em matadouro de aves sob inspeção sanitária, após classificação utilizada nos padrões para exportação. Foram coletados 30 pés tipo A, 30 pés tipo B e 33 pés tipo C, escolhidos aleatoriamente dentro de cada grupo. Para análise histopatológica, foram desenvolvidos escores de acordo com a gravidade das lesões, variando de 0 a 2. Foi observada associação (qui-quadrado, P
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- 2019
33. Morphological and immunohistochemical study of the midgut and fat body of
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K A, Dutra, V, Wanderley Teixeira, G S, Cruz, C T S, Silva, C G, D Assunção, C G M, Ferreira, A L B, Monteiro, A C, Agra Neto, C J C, Lapa Neto, A A C, Teixeira, and D M A F, Navarro
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Insecticides ,Larva ,Fat Body ,Oils, Volatile ,Animals ,Plant Oils ,Spodoptera ,Digestive System ,Piper - Abstract
Essential oils are a promising alternative to insecticides. We investigated the LD
- Published
- 2019
34. Associated Strengthening Exercises to Undenatured Oral Type II Collagen UCII. A Randomized Study in Patients Affected by Knee Osteoarthritis
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R. Boff Daitx, P.A. Kuplich, P. Mota Ferreira, J.F. da Silva Guths, Marta Pereira, Marcelo Baptista Dohnert, V. Cunha Teixeira, and Ana Paula Costa
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medicine.medical_specialty ,business.industry ,Type II collagen ,Strengthening exercises ,Osteoarthritis ,medicine.disease ,law.invention ,Randomized controlled trial ,law ,Physical therapy ,Medicine ,Orthopedics and Sports Medicine ,In patient ,business - Published
- 2020
35. An overview of biotransformation and toxicity of diterpenes
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Maria V Sousa Teixeira, Niege Araçari Jacometti Cardoso Furtado, and Ingrid Pontes Sousa
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Drug ,food.ingredient ,media_common.quotation_subject ,Pharmaceutical Science ,Review ,01 natural sciences ,Analytical Chemistry ,lcsh:QD241-441 ,food ,lcsh:Organic chemistry ,Biotransformation ,Drug Discovery ,Animals ,Humans ,Physical and Theoretical Chemistry ,Medicinal plants ,media_common ,Molecular Structure ,Human liver ,010405 organic chemistry ,Chemistry ,Food additive ,Organic Chemistry ,toxicity ,diterpenes ,0104 chemical sciences ,010404 medicinal & biomolecular chemistry ,Metabolic pathway ,Biochemistry ,Drug development ,Chemistry (miscellaneous) ,Toxicity ,FARMACOCINÉTICA ,Molecular Medicine ,biotransformation - Abstract
Diterpenes have been identified as active compounds in several medicinal plants showing remarkable biological activities, and some isolated diterpenes are produced at commercial scale to be used as medicines, food additives, in the synthesis of fragrances, or in agriculture. There is great interest in developing methods to obtain derivatives of these compounds, and biotransformation processes are interesting tools for the structural modification of natural products with complex chemical structures. Biotransformation processes also have a crucial role in drug development and/or optimization. The understanding of the metabolic pathways for both phase I and II biotransformation of new drug candidates is mandatory for toxicity and efficacy evaluation and part of preclinical studies. This review presents an overview of biotransformation processes of diterpenes carried out by microorganisms, plant cell cultures, animal and human liver microsomes, and rats, chickens, and swine in vivo and highlights the main enzymatic reactions involved in these processes and the role of diterpenes that may be effectively exploited by other fields.
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- 2018
36. Biotransformation of Aromatic Ketones by Linum usitatissimum
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Maria V. S. Teixeira, Juliana M. O. Souza, Gilvandete M. P. Santiago, Angela M. C. Arriaga, Telma L. G. Lemos, and Leonardo C. Tavares
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Linum ,Biotransformation ,biology ,Chemistry ,Aromatic ketones ,Organic chemistry ,Plant Science ,General Chemistry ,biology.organism_classification ,General Biochemistry, Genetics and Molecular Biology - Published
- 2015
37. Linseed (Linum usitatissimum L.) as a Biocatalyst for Reduction of Nitroaromatic Compounds
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Gilvandete M. P. Santiago, Maria V. S. Teixeira, Telma L. G. Lemos, Angela M. C. Arriaga, Daniele Alves Ferreira, and Leonardo C. Tavares
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Green chemistry ,Linum ,Phytochemistry ,biology ,Chemistry ,General Chemistry ,Food chemistry ,biology.organism_classification ,Biochemistry ,Nitrobenzene ,chemistry.chemical_compound ,GEOBASE ,Biocatalysis ,Drug Discovery ,Environmental Chemistry ,Organic chemistry ,Chemoselectivity - Abstract
The reduction of nitroaromatic compounds is an important transformation that be used in the synthesis of amines which are interesting intermediates of pharmaceuticals and other derivatives. Linseed, Linum usitatissimum L., were used to catalyze biotransformations of nitrobenzene, ortho-nitroacetophenone, meta- nitroacetophenone and para-nitroacetophenone. Ortho-aminoacetophenone, and para- aminoacetophenone were obtained with excellent chemoselectivity (92.1 to 99%).
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- 2014
38. Reproductive characteristics of bulls from two breed compositions and their correlations with infrared thermography
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Sandra Gesteira Coelho, Thierry Ribeiro Tomich, João Paulo Ρacheco Rodrigues, V. A. Teixeira, Luiz Gustavo Ribeiro Ρereira, Fernanda Samarini Machado, Gabriel Augusto Monteiro, Marcos Vinícius Gualberto Barbosa da Silva, and Mariana Magalhães Camρos
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Male ,0106 biological sciences ,endocrine system ,Physiology ,animal diseases ,030310 physiology ,media_common.quotation_subject ,Biology ,010603 evolutionary biology ,01 natural sciences ,Biochemistry ,Crossbreed ,03 medical and health sciences ,Animal science ,Species Specificity ,Scrotum ,medicine ,Animals ,Scrotal circumference ,Dairy cattle ,media_common ,0303 health sciences ,urogenital system ,Reproduction ,Temperature ,Humidity ,Rectal temperature ,Spermatozoa ,Breed ,Semen Analysis ,medicine.anatomical_structure ,Thermography ,Hybridization, Genetic ,Cattle ,General Agricultural and Biological Sciences ,Body Temperature Regulation ,Developmental Biology - Abstract
The objective was to evaluate reproductive characteristics of crossbred Girolando (Gyr x Holstein) bulls from two breed compositions and correlate these results with infrared thermography data. Evaluations were performed considering sperm motility, vigor and morphology; scrotal circumference; body morphology and temperament. Infrared thermography was performed to determine surface temperatures of ocular and scrotal areas. Thermoregulation capacity was assessed by differences between air and rectal temperatures, air and maximum temperatures in ocular and scrotal areas, and dorsal and ventral lines of the scrotum. Data analysis was performed using a linear mixed model (breed composition as fixed effect and year of evaluation as random effect). Spearman correlation coefficient was used to associate thermography and reproductive data. Girolando 3/4 Holstein bulls had higher (P ≤ 0.001) scrotal circumference and higher average body morphology and temperament, whereas 5/8 Holstein bulls had a higher (P 0.001) percentage of major-type and total sperm defects. Girolando 3/4 Holstein bulls had scrotal temperatures 0.8 °C higher (P 0.001) and 5/8 Holstein bulls had 9.8% and 10.6% higher differences on "rectal - scrotal area" and "ocular area - scrotal area" temperatures, respectively. Ocular area temperatures had negative correlations (P ≤ 0.1) with sperm motility and vigor, and positive correlations (P 0.001) with minor-type and total sperm defects. Ventral line scrotal temperatures had positive correlations (P 0.001) with minor-type and total sperm defects. Girolando 3/4 Holstein bulls were found to be superior to 5/8 Holstein bulls for reproductive characteristics. Under non-stressing climatic conditions, semen characteristics of Girolando bulls were more influenced by breed composition than by the capacity for scrotal thermoregulation. Correlations between semen quality and scrotal temperatures can aid in the identification of bulls for breeding, particularly when a large number of animals are in the tests.
- Published
- 2019
39. Perfil Lipídico de Ratos com Hipertireoidismo Induzido: Efeitos do Exercício Físico Agudo
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T. M. Vital, C. V. L. Teixeira, J. C. Jambassi Filho, E. Luciano, L. T. Cambri, and R. A. Dalia
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General Engineering - Published
- 2013
40. AKI - experimental models
- Author
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C.-F. Lai, S.-L. Lin, W.-C. Chiang, Y.-M. Chen, M.-L. Kuo, T.-J. Tsai, H. S. Hwang, Y. A. Choi, K. C. Park, K. J. Yang, H. S. Choi, S. H. Kim, S. J. Lee, Y. K. Chang, S. Y. Kim, C. W. Yang, Z. Xiujuan, R. Yoshimura, M. Matsuyama, J. Chargui, J.-L. Touraine, N. Yoshimura, A. B. Zulkarnaev, I. A. Vasilenko, D. V. Artemov, A. V. Vatazin, S. K. Park, K. P. Kang, S. Lee, W. Kim, R. Schneider, B. Betz, K. Moller-Ehrlich, C. Wanner, C. Sauvant, C. W. Park, R. Sohotnik, O. Nativ, A. Abbasi, H. Awad, V. Frajewicki, Z. Armaly, S. N. Heyman, Z. Abassi, P. Y. Chen, B. L. Chen, C. C. Yang, C. K. Chiang, S. H. Liu, A. E. Abozahra, A. A. Abd-Elkhabir, A. Shokeir, A. Hussein, A. Awadalla, N. Barakat, A. Abdelaziz, J. Yamaguchi, T. Tanaka, N. Eto, M. Nangaku, Y. Quiros, F. J. Lopez-Hernandez, M. P. Perez de Obanos, J. Ruiz, J. M. Lopez-Novoa, H.-S. Shin, M.-J. Kim, Y.-J. Choi, E.-S. Ryu, H.-S. Choi, D.-H. Kang, S. S. Jankauskas, I. B. Pevzner, L. D. Zorova, V. A. Babenko, M. A. Morosanova, E. Y. Plotnikov, D. B. Zorov, C.-Y. Huang, T.-M. Huang, V.-C. Wu, G.-H. Young, A. A. Chupyrkina, S. D. Zorov, J. P. Grande, S. P. Hartono, B. E. Knudsen, K. Mederle, H. Castrop, K. Hocherl, T. Iwakura, T. Fujikura, N. Ohashi, H. Yasuda, Y. Fujigaki, I. Matsui, T. Hamano, K. Inoue, Y. Obi, C. Nakano, Y. Kusunoki, Y. Tsubakihara, H. Rakugi, Y. Isaka, A. Shimomura, C. Wallentin Guron, L. Nguy, J. Lundgren, E. Grimberg, P. Kashioulis, G. Guron, G. F. DiBona, M. Nedergaard Mikkelsen, N. Marcussen, A. Saeed, K. Edvardsson, K. Lindberg, T. Larsson, K. Ito, H. Nakashima, M. Watanabe, Y. Abe, S. Ogahara, T. Saito, G. Albertoni, F. Borges, N. Schor, O. N. Beresneva, M. M. Parastayeva, A. G. Kucher, G. T. Ivanova, N. Shved, M. G. Rybakova, I. G. Kayukov, A. V. Smirnov, J.-F. Chen, H.-F. Ni, M.-M. Pan, H. Liu, M. Xu, M.-H. Zhang, B.-C. Liu, Y. Kim, B. S. Choi, Y. S. Kim, J. S. Han, L. A. Reis, J. S. Christo, M. d. J. Simoes, S. R. Mulay, V. R. Santhosh Kumar, O. P. Kulkarni, M. Darisipudi, M. Lech, H.-J. Anders, D. N. Silachev, A. Sola, M. Jung, M. Ventayol, C. Mastora, S. Buenestado, G. Hotter, S. Rong, N. Shushakova, G. Wensvoort, H. Haller, F. Gueler, C. Morais, D. A. Vesey, D. W. Johnson, G. C. Gobe, M. Godo, T. Kaucsar, C. Revesz, P. Hamar, Q. Cheng, J. Wen, Q. Ma, J. Zhao, G. Castellano, A. Stasi, A. M. Di Palma, M. Gigante, G. S. Netti, C. Curci, A. Intini, C. Divella, C. Prattichizzo, E. Fiaccadori, G. Pertosa, G. Grandaliano, L. Gesualdo, Q. W. Wei, Q. Q. Jing, N. J. Ying, Q. Z. Dong, G. Yong, N. V. Pulkova, G. T. Sukhikh, S. Kim, J. Lee, N. J. Nam, K. Y. Na, S. K. Ma, S. Y. Joo, C. S. Kim, J. S. Choi, E. H. Bae, S. W. Kim, V. Cernaro, M. A. Medici, V. Donato, D. Trimboli, G. Lorenzano, D. Santoro, G. Montalto, M. Buemi, V. Longo, H. R. C. Segreto, W. Almeida, M. F. Ramos, L. Gomes, C. Razvickas, M. Gutberlet, M. Meier, M. Mengel, D. Wacker, K. Hueper, A. Uzum, R. Ersoy, F. Cakalagaoglu, M. Karaman, E. Kolatan, O. Sahin, O. Yilmaz, M. Cirit, S. Inal, E. Koc, G. U. Okyay, O. Pasaoglu, I. Gonul, E. Oyar, H. Pasaoglu, G. Guz, M. Sabbatini, R. Rossano, M. Andreucci, A. Pisani, E. Riccio, D. E. Choi, J. Y. Jeong, S. S. Kim, K.-R. Na, K. W. Lee, Y. T. Shin, A. F. Silva, V. C. Teixeira, K. Meszaros, N. Koleganova-Gut, F. Schaefer, E. Ritz, D. Walacides, N. Ruskamp, M. Schiffer, O. Marom, H. Haick, F. Nakhoul, L.-L. Lv, R.-N. Tang, J.-D. Zhang, K.-L. Ma, P.-S. Chen, W.-J. Ko, G. P. Misiara, T. M. Coimbra, G. E. B. Silva, R. S. Costa, H. D. C. Francescato, M. M. Neto, M. Dantas, H. Olauson, R. Amin, A. Ponnusamy, R. Goetz, M. Mohammadi, A. Canfield, K. Kublickiene, J. Rodriguez, E. P. Reyes, P. P. Cortes, R. Fernandez, H. E. Yoon, E. S. Koh, S. Chung, S. J. Shin, D. Pazzano, R. Lupica, F. Torre, G. Costantino, M. Prieto, J. M. Gonzalez-Buitrago, F. Lopez-Hernandez, A. I. Morales, L. Vicente-Vicente, L. Ferreira, M. J. Simoes, C. d. Passos, N. S. Schor, M. H. M. Shimizu, D. Canale, A. C. de Braganca, L. Andrade, W. M. Luchi, A. C. Seguro, J. Goncalves, R. A. Volpini, P. Garrido, J. Fernandes, S. Ribeiro, H. Vala, B. Parada, R. Alves, L. Belo, E. Costa, A. Santos-Silva, and F. Reis
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Transplantation ,Pathology ,medicine.medical_specialty ,medicine.anatomical_structure ,Nephrology ,business.industry ,Regeneration (biology) ,education ,medicine ,Bone marrow ,business ,health care economics and organizations - Abstract
Poster presentada en el 50th ERA-EDTA Congress (European Renal Association - European Dialysis Transplant Association), celebrado del 18 al 21 de mayo de 2013 en Estambul (Turquia)
- Published
- 2013
41. Experimental models of CKD
- Author
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R. Kanlaya, K. Sintiprungrat, V. Thongboonkerd, N. Torremade, R. Bindels, J. Hoenderop, E. Fernandez, A. Dusso, J. M. Valdivielso, T. Krueger, P. Boor, C. Schafer, R. Westenfeld, V. Brandenburg, G. Schlieper, W. Jahnen-Dechent, M. Ketteler, W. Jee, X. Li, B. Richards, J. Floege, J. G. Goncalves, D. Canale, A. C. de Braganca, M. H. M. Shimizu, R. M. A. Moyses, L. Andrade, A. C. Seguro, R. A. Volpini, S. Romoli, A. Migliorini, H.-J. Anders, O. Eskova, N. Neprintseva, N. Tchebotareva, I. Bobkova, L. Kozlovskaya, I. Simic, M. Tabatabaeifar, T. Wlodkowski, H. Denc, G. Mollet, C. Antignac, F. Schaefer, I. A. Ekaterina, L. Giardino, M. P. Rastaldi, L. Van den Heuvel, E. Levtchenko, C. Okina, T. Okamoto, M. Kamata, J. Murano, K. Kobayashi, K. Takeuchi, F. Kamata, T. Sakai, S. Naito, T. Aoyama, T. Sano, Y. Takeuchi, K. Kamata, D. Thomasova, H. A. Bruns, H. Liapis, T. Iwashita, H. Hasegawa, K. Takayanagi, T. Shimizu, J. Asakura, S. Okazaki, Y. Kogure, M. Hatano, H. Hara, M. Inamura, M. Iwanaga, T. Mitani, T. Mitarai, V. J. Savin, M. Sharma, C. Wei, J. Reiser, E. T. McCarthy, R. Sharma, J.-F. Gauchat, B. Eneman, K. Freson, C. Van Geet, D. E. Choi, J. Y. Jeong, Y. K. Chang, K.-R. Na, K. W. Lee, Y. T. Shin, H.-F. Ni, J.-F. Chen, M.-H. Zhang, M.-M. Pan, B.-C. Liu, S. S. Kim, T. Suzuki, M. Iyoda, K. Matsumoto, Y. Shindo-Hirai, Y. Kuno, Y. Wada, Y. Yamamoto, T. Shibata, T. Akizawa, J. M. Munoz-Felix, J. M. Lopez-Novoa, C. Martinez-Salgado, J. Ehling, J. Babickova, F. Gremse, F. Kiessling, T. Lammers, M. Lech, R. Gunthner, G. Lorenz, M. Ryu, R. Grobmayr, H. Susanti, K. S. Kobayashi, R. A. Flavell, S. Rayego-Mateos, J. Morgado, A. B. Sanz, S. Eguchi, J. Pato, G. Keri, J. Egido, A. Ortiz, M. Ruiz-Ortega, M. Leduc, L. Geerts, B. Grouix, F. Sarra-Bournet, A. Felton, L. Gervais, S. Abbott, J.-S. Duceppe, B. Zacharie, C. Penney, P. Laurin, L. Gagnon, M. G. Detsika, P. Duann, E. A. Lianos, K. I. Leong, C.-K. Chiang, C.-C. Yang, C.-T. Wu, L.-P. Chen, K.-Y. Hung, S.-H. Liu, F. F. Carvalho, V. P. Teixeira, W. S. Almeida, N. Schor, D. M. Small, N. C. Bennett, J. Coombes, D. W. Johnson, G. C. Gobe, N. Montero, A. Prada, M. Riera, M. Orfila, J. Pascual, E. Rodriguez, C. Barrios, G. Kokeny, K. Fazekas, L. Rosivall, M. M. Mozes, N. Hornigold, J. Hughes, A. Mooney, A. Benardeau, W. Riboulet, A. Vandjour, B. Jacobsen, C. Apfel, K. Conde-Knape, J.-F. Bienvenu, T. Tanaka, J. Yamaguchi, M. Nangaku, T. Niwa, D. Bolati, H. Shimizu, M. Yisireyili, F. Nishijima, A. Brocca, G. Virzi, M. de Cal, C. Ronco, G. Priante, E. Musacchio, C. Valvason, L. Sartori, A. Piccoli, B. Baggio, M. Perkuhn, M. Weibrecht, S. Zok, I. V. Martin, F. Schoth, T. Ostendorf, C. Kuhl, A. Karabaeva, A. Essaian, O. Beresneva, M. Parastaeva, I. Kayukov, A. Smirnov, I. Audzeyenka, M. Kasztan, A. Piwkowska, D. Rogacka, S. Angielski, M. Jankowski, C. L. Bockmeyer, K. Kokowicz, P. A. Agustian, S. Zell, J. Wittig, J. U. Becker, R. Nishizono, M. P. Venkatareddy, M. A. Chowdhury, S. Q. Wang, A. Fukuda, L. T. Wickman, Y. Yang, R. C. Wiggins, M. R. Fazio, V. Donato, S. Lucisano, V. Cernaro, R. Lupica, D. Trimboli, G. Montalto, C. Aloisi, A. T. Mazzeo, M. Buemi, O. Gawrys, K. H. Olszynski, M. Kuczeriszka, K. Gawarecka, E. Swiezewska, M. Chmielewski, M. Masnyk, J. Rafalowska, E. Kompanowska-Jezierska, W.-C. Lee, Y.-Y. Chau, L.-C. Lee, C.-H. Chiu, C.-T. Lee, J.-B. Chen, W.-K. Kim, and S. J. Shin
- Subjects
Transplantation ,medicine.medical_specialty ,Nephrology ,business.industry ,Medicine ,business ,Intensive care medicine - Published
- 2013
42. A controlled clinical trial on the effects of exercise on neuropsychiatric disorders and instrumental activities in women with Alzheimer's disease Efeitos do exercício físico sobre distúrbios neuropsiquiátricos e atividades instrumentais da vida diária em mulheres com doença de Alzheimer : um ensaio clínico controlado
- Author
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Carla M. C. Nascimento, Camila V. L. Teixeira, Lilian T. B. Gobbi, Sebastião Gobbi, and Florindo Stella
- Subjects
fisioterapia ,demência ,lcsh:RM1-950 ,instrumental activities ,atividade física ,distúrbios neuropsiquiátricos ,Alzheimer's disease ,atividades instrumentais ,neuropsychiatric disorders ,lcsh:Therapeutics. Pharmacology ,physical exercise ,physical therapy ,Doença de Alzheimer ,dementia - Abstract
OBJECTIVE: To analyze the influence of a six-month exercise program on neuropsychiatric disorders and on the performance of instrumental activities in elderly patients with Alzheimer's disease (AD). METHODS: The study included 20 patients with AD in the mild to moderate stages of the Clinical Dementia Rating (CDR) divided into two groups: the experimental group, composed of 10 women who participated in the six-month exercise program, and the control group, composed of the 10 remaining AD patients who did not take part in an exercise program during the same period. All participants were evaluated using the Mini-Mental State Exam for global cognitive function, the Neuropsychiatric Inventory Questionnaire for neuropsychiatric disorders, and the Pfeffer Functional Activities Questionnaire for the degree of functional impairment. RESULTS: The control group showed functional and neuropsychiatric deterioration in the comparisons between pre- and post-intervention times and between groups. CONCLUSION: The experimental group showed a propensity for less deterioration in neuropsychiatric disorders and performance of instrumental activities compared to the sedentary group.OBJETIVO: Analisar os efeitos de seis meses de intervenção de um programa de atividade física sobre os distúrbios neuropsiquiátricos e o desempenho nas atividades instrumentais da vida diária de idosos com Doença de Alzheimer (DA). MÉTODOS: Foram recrutados 20 pacientes nos estágios entre leve e moderado da DA. Segundo o escore clínico de demência (CDR), foram distribuídos em dois grupos: o grupo treinamento (GT), composto por dez mulheres que participaram de um program de exercícios físicos por um período de seis meses, e o grupo controle (GC), composto por dez outras participantes que não realizaram nenhum tipo de intervenção motora estruturada durante o mesmo período. Todas as participantes foram avaliadas por meio do Miniexame do Estado Mental, para obtenção da caracterização cognitiva; Inventário Neuropsiquiátrico, para identificação dos distúrbios neuropsiquiátricos mais prevalentes e Questionário de Atividades Instrumentais de Pfeffer, para verificação do grau de comprometimento funcional. RESULTADOS: Os participantes do GC mostraram uma deterioração tanto no desempenho das atividades instrumentais quanto na intensificação dos distúrbios neuropsiquiátricos, quando comparados os momentos pré e pós-intervenção. CONCLUSÃO: O GT demonstrou uma atenuação da intensificação dos distúrbios neuropsiquiátricos e do desempenho funcional em relação ao grupo sedentário.
- Published
- 2012
43. Herbage Mass, Herbage Rejection, and Chemical Composition of Signalgrass under Different Stocking Rates and Distances from Dung Pads
- Author
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V. I. Teixeira, J. C. B. Dubeux, A. C. L. de Mello, M. A. Lira, F. M. Saraiva, and M. V. F. dos Santos
- Subjects
Stocking ,Animal science ,Biology ,Agronomy and Crop Science ,Chemical composition - Published
- 2012
44. Some considerations about LED technology in public lighting
- Author
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G. M. Tavares, Marcio Zamboti Fortes, V. A. Teixeira, Antonio Marcos Estrela Pereira, and Adriano Pinheiros Fragoso
- Subjects
Service (business) ,Architectural engineering ,Engineering ,education.field_of_study ,business.industry ,media_common.quotation_subject ,Population ,Energy consumption ,law.invention ,LED lamp ,law ,Forensic engineering ,Quality (business) ,business ,education ,Smart lighting ,media_common - Abstract
In recent years the public lighting systems in Brazil have received investments to expand the access of the population to this service and raise its quality, with appropriate lighting levels and providing more comfort and safety to users of the public places. In addition, another motivation for these investments is in need of the use of increasingly efficient systems, providing a reduction in energy consumption when compared to old equipment installed. In this article were analyzed the Light Emitting Diode (LED) technology in various aspects in a way that it could be applied to street lighting installations replacing the use of the prevailing technology in use.
- Published
- 2015
45. Inadequate voltage control in the assessment of voltage stability conditions
- Author
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O. C. Zevallos, M. V. P. Teixeira, and Ricardo B. Prada
- Subjects
Engineering ,Low-dropout regulator ,business.industry ,Dropout voltage ,Control theory ,Psophometric voltage ,Voltage droop ,Voltage regulation ,Voltage regulator ,Voltage source ,Voltage optimisation ,business - Abstract
Inadequate voltage control occurs when the controlling variable and controlled voltage of a control device are inversely related (i.e., not related in the usual way), potentially adversely affecting the system voltage level. This special situation can be identified by analyzing the elements of a sensitivity matrix constructed to show the relationship between the system control variables. Analysis of these elements not only allows the adequacy or otherwise of voltage control actions to be determined, but also helps to identify any conflict between controls that could, if not addressed, limit the possibilities for voltage control in the system. Furthermore, once the problem of the inadequacy of voltage control actions for a particular operating point has been identified, its impact on voltage stability conditions can be determined by calculating assessment indexes.
- Published
- 2015
46. IMPORTÂNCIA DAS MOLÉCULAS AROMÁTICAS NA FLUORESCÊNCIA DOS COMBUSTÍVEIS
- Author
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A. S. do Nacimento, L Stragevitch, V. M. Teixeira, E. S. Leite, G. A. L. Pereira, A. Fontes, and B. S. Santos
- Subjects
Chemistry - Published
- 2015
47. One‐Pot Synthesis of Pyrazole‐5(3)‐carboxyamides
- Author
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Nilo Zanatta, Marcos V. M. Teixeira, Marcos A. P. Martins, Wilson Cunico, Rodrigo L. Peres, Helio G. Bonacorso, Sergio Brondani, Daniel J. Emmerich, Adilson P. Sinhorin, Claudio M. P. Pereira, and Paulo Beck
- Subjects
chemistry.chemical_compound ,Chemistry ,Group (periodic table) ,Yield (chemistry) ,Organic Chemistry ,One-pot synthesis ,Organic chemistry ,Pyrazole - Abstract
A convenient one‐pot synthesis of eight pyrazole‐5(3)‐carboxyamides from the reaction of the 5(3)‐trichloromethylpyrazoles with amines, in good yield, is reported. These reactions show that the trichloromethyl group is a convenient precursor to carboxyamide groups.
- Published
- 2004
48. Indium(III) bromide catalyzed one-pot synthesis of trichloromethylated tetrahydropyrimidinones
- Author
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Nilo Zanatta, Marcos V. M. Teixeira, Elisandra Scapin, Yao-Feng Yuan, Claudio M. P. Pereira, Helio G. Bonacorso, Wilson Cunico, Clovis Peppe, Rodrigo Mayer, and Marcos A. P. Martins
- Subjects
Organic Chemistry ,Biginelli reaction ,One-pot synthesis ,chemistry.chemical_element ,Furfural ,Biochemistry ,chemistry.chemical_compound ,chemistry ,Thiourea ,Bromide ,Indium(III) bromide ,Drug Discovery ,Polymer chemistry ,Urea ,Indium - Abstract
One-pot condensation of ethyl trichloroacetoacetate 1 with p -substituted aromatic aldehydes (Ph, 4-Me–C 6 H 4 , 4-Cl–C 6 H 4 , 4-MeO–C 6 H 4 ) or furfural, and urea or thiourea catalyzed by indium(III) bromide affords eight trichloromethylated tetrahydropyrimidinones, in high yields.
- Published
- 2004
49. Rotational brightness variations in Trans-Neptunian Object 50000 Quaoar
- Author
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V. Casanova, V. R. Teixeira, P. J. Gutierrez, J. L. Ortiz, and Alfredo Sota
- Subjects
Physics ,Rotation period ,Brightness ,Axial ratio ,Astronomy ,Astronomy and Astrophysics ,Astrophysics ,law.invention ,Telescope ,Photometry (optics) ,Amplitude ,Space and Planetary Science ,law ,Observatory ,Periodogram - Abstract
Time-resolved broad-band CCD photometry of Trans-Neptunian Object 50000 Quaoar carried out using the 1.5 m telescope at Sierra Nevada Observatory is presented. The lightcurve reveals short-term variability due to rotation of the body. The periodogram analysis shows a peak at 8.8394 ± 0.0002 h with a confidence level above 99.9%. The lightcurve seems to be double-peaked, and therefore the rotation period would be 17.6788 ± 0.0004 h. The amplitude of the oscillation is 0.133 ± 0.028 mag. Under the assumption that the rotational variation is induced by an irregular shape, the minimum axial ratio of Quaoar would then be 1.133 ± 0.028.
- Published
- 2003
50. INTESTINAL DOPAMINERGIC ACTIVITY IN OBESE AND LEAN ZUCKER RATS: RESPONSE TO HIGH SALT INTAKE
- Author
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Paula Serrão, Patrício Soares-da-Silva, Tahir Hussain, Mustafa F. Lokhandwala, and V. Lucas-Teixeira
- Subjects
Male ,medicine.medical_specialty ,Hypertension, Renal ,Physiology ,Dopamine ,Catechol O-Methyltransferase ,Levodopa ,Internal medicine ,Internal Medicine ,medicine ,Animals ,Diabetic Nephropathies ,Obesity ,Sodium Chloride, Dietary ,Na+/K+-ATPase ,Salt intake ,Monoamine Oxidase ,Aromatic L-amino acid decarboxylase ,Catechol-O-methyl transferase ,Chemistry ,Dopaminergic ,Biological activity ,General Medicine ,Rats ,Rats, Zucker ,Enzyme Activation ,Jejunum ,Endocrinology ,Aromatic-L-Amino-Acid Decarboxylases ,Dopamine receptor ,Hyperglycemia ,Sodium-Potassium-Exchanging ATPase ,medicine.drug - Abstract
The present study examined intestinal dopaminergic activity and its response to high salt (HS, 1% NaCl over a period of 24 hours) intake in obese (OZR) and lean Zucker rats (LZR). The basal Na+,K+-ATPase activity (nmol Pi/mg protein/min) in the jejunum of OZR was higher than in LZR on normal salt (NS) (OZR-NS = 111.3 +/- 6.0 vs. LZR-NS = 88.0 +/- 8.3). With the increase in salt intake, the basal Na+,K+-ATPase activity significantly increased in both animals (OZR-HS = 145.9 +/- 11.8; LZR-HS = 108.8 +/- 6.7). SKF 38393 (10 nM), a specific D1-like dopamine receptor agonist, inhibited the jejunal Na+,K+-ATPase activity in OZR on HS intake, but failed to inhibit enzyme activity in OZR on NS intake and LZR on NS and HS intakes. The aromatic L-amino acid decarboxylase (AADC) activity in OZR was lower than in LZR on NS intake. The HS intake increased AADC activity in OZR, but not in LZR. During the NS intake the jejunal monoamine oxidase (MAO) activity in OZR was similar to that in LZR. The HS intake significantly decreased MAO activity in both OZR and LZR. The jejunal COMT activity in OZR was higher than in LZR on NS intake. The HS intake reduced COMT activity in OZR but not LZR. It is concluded that inhibition of jejunal Na+,K+-ATPase activity through D1 dopamine receptors is dependent on salt intake in OZR, whereas in LZR, the enzyme failed to respond to the activation of D1 dopamine receptors irrespective of their salt intake.
- Published
- 2002
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