Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 6 de 6
Filtrar
Mais filtros











Intervalo de ano de publicação
3.
Arq. bras. med. vet. zootec ; 60(3): 749-754, jun. 2008. ilus, graf, tab
Artigo em Inglês | LILACS | ID: lil-487924

RESUMO

This study was carried out throughout a laying period to compare the behaviour and performance of two groups of commercial layers, 180 ISA Brown and 120 Hy line W98, housed at 17 weeks of age in furnished cages with a nest box, perches, dust-bath, and claw shortening device. Based on productive parameters, the model of furnished cages studied is suitable for both, Isa Brown and Hy line hens. The study suggested that strain has a significant effect on feather condition and on some behavioural displays, particularly those related to the use of a dust-bath.


Durante um ciclo completo de postura foram avaliados o comportamento e o desempenho de duas linhagens de poedeiras comerciais, 180 ISA Brown e 120 Hy line W98, alojadas com 17 semanas de idade em gaiolas enriquecidas com ninho, poleiros, banho de areia e dispositivos de desgaste de unhas. Em ambas as linhagens, Isa Brown e Hy line W98, o modelo de gaiola estudado foi apropriado em termos de desempenho produtivo. O estudo sugeriu que a linhagem teve efeito significativo sobre a condição da plumagem e sobre alguns aspectos comportamentais, particularmente, aqueles relacionados ao uso do banho de areia.


Assuntos
Animais , Comportamento Animal , Galinhas , Asseio Animal , Areia
4.
An Sist Sanit Navar ; 27 Suppl 2: 51-8, 2004.
Artigo em Espanhol | MEDLINE | ID: mdl-15381943

RESUMO

The generally indolent, slow and protracted course of hepatitis C virus infection has limited the realisation of studies that evaluate its natural history. The aim of such studies has been the probability of death through hepatic disease, hepatic cirrhosis (compensated or decompensated), and/or hepatocarcinoma, or the development of a significant hepatic fibrosis (essential anatamopathological substrate for the development of the complications of hepatic cirrhosis). In spite of their possible limitations, the results of these studies show that chronic hepatitis C virus infection generally follows a benign evolutionary course, above all if this occurs in young patients (<50 years of age), without other aggravating factors of a possible hepatopathy (alcohol, coinfection by other viruses, immunosuppression) and if this is evaluated in the first 10-20 years of infection. At present, it is not possible to identify with precision those patients with HCV infection with a greater risk of developing a clinically relevant hepatic disease. However, it is likely that those subjects with high transaminases (> 2 times the normal value) and significant necroinflammatory activity (periportal necrosis) and fibrosis in the hepatic biopsy will show a more aggressive evolutionary course than those with normal transaminases and an almost normal hepatic biopsy.


Assuntos
Hepatite C , Estudos Transversais , Progressão da Doença , Hepatite C/complicações , Hepatite C/diagnóstico , Humanos , Cirrose Hepática/etiologia , Estudos Prospectivos , Estudos Retrospectivos
5.
An. sist. sanit. Navar ; 27(supl.2): 51-58, 2004. tab, ilus
Artigo em Es | IBECS | ID: ibc-34537

RESUMO

El curso generalmente indolente, lento y prolongado de la infección por el virus de la hepatitis C ha limitado la realización de estudios que valoren su historia natural. Dichos estudios han tenido como objetivo la probabilidad de muerte por enfermedad hepática, cirrosis hepática (compensada o descompensada) y/o hepatocarcinoma, o el desarrollo de una fibrosis hepática importante (substrato anatomopatológico indispensable para el desarrollo de las complicaciones de la cirrosis hepática). A pesar de sus posibles limitaciones, los resultados de estos estudios demuestran que la infección crónica por VHC sigue generalmente un curso evolutivo benigno, sobre todo si ésta acontece en pacientes jóvenes (2 veces el valor normal) e importante actividad necroinflamatoria (necrosis periportal) y fibrosis en la biopsia hepática presenten un curso evolutivo más agresivo que aquellos con transaminasas normales y biopsia hepática casi normal (AU)


Assuntos
Adulto , Masculino , Pessoa de Meia-Idade , Humanos , Hepatite C/diagnóstico , Hepatite C/complicações , Hepatite C/terapia , História Natural/métodos , Carcinoma/complicações , Carcinoma/diagnóstico , Hepatopatias/complicações , Hepatopatias/diagnóstico , Hepatopatias/terapia , Fibrose/complicações , Fibrose/diagnóstico , Transaminases/análise , Transaminases , Estudos Transversais , Estudos Retrospectivos , Estudos Prospectivos , Hemocromatose/complicações , Esquistossomose/complicações
6.
Scand J Gastroenterol ; 36(7): 717-24, 2001 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-11444470

RESUMO

BACKGROUND: Several authors have reported low prevalence of Helicobacter pylori infection in patients with upper gastrointestinal bleeding (UGIB). Our aim was to study the prevalence of H. pylori in bleeding duodenal ulcer (DU), with both invasive and non-invasive methods, and to assess the role of non-steroidal anti-inflammatory drugs (NSAIDs). METHODS: Ninety-two patients with bleeding DU were prospectively studied. The use of NSAIDs was evaluated by specific questionnaire. As a control group, 428 patients undergoing outpatient evaluation for the investigation of dyspepsia and found to have a DU at endoscopy were included. At endoscopy, two antral biopsies were obtained (H&E stain). A 13C-urea breath test was carried out in all patients. Breath test was repeated in patients treated with omeprazole during the hospitalization if H. pylori was not detected with the first test. RESULTS: Gastric biopsies could be obtained in 39 patients with UGIB. Three patients with UGIB treated with omeprazole and being H. pylori-negative with the first breath test were finally considered infected with the second test. Overall, 92.4% (95% CI, 85%-96%) of the patients with UGIB were infected (89.7% with histology and 92.4% with breath test (P = 0.15)). Concordance kappa value for both diagnostic tests was 0.64. NSAID intake was more frequent in patients with UGIB (34%) than in those without UGIB (5.6%) (P < 0.001), while H. pylori infection was less frequent in patients with UGIB (92.4% (85%-96%)) than in those without UGIB (99.1% (98%-100%); P < 0.001). Even in patients with UGIB, NSAID intake was the only risk factor in 5% of cases. The proportion of cases without H. pylori infection and without NSAID intake was very low in both bleeding and non-bleeding ulcers (2% and 0.5%, respectively; P = 0.146). H. pylori prevalence in bleeding ulcers was of 84% (67%-93%) in patients with NSAID intake, and 96.7% (89%-99%) when patients taking NSAIDs were excluded. In the multivariate analysis, NSAID intake (odds ratio, 9.8 (5.2-18.4)) correlated with UGIB; however, neither H. pylori status nor the interaction between H. pylori infection and NSAID intake correlated with UGIB. In the multivariate analysis in the subgroup of patients with UGIB, NSAID use was the only variable which correlated with H. pylori prevalence (odds ratio, 0.18 (0.03-0.97)). CONCLUSIONS: The most important factor associated with H. pylori-negative bleeding DU is NSAID use, and if this factor is excluded prevalence of infection is almost 100% (97%), similar to that found in patients with non-bleeding DU (and without NSAID intake). Bleeding DU patients with neither H. pylori infection nor NSAID use are extremely rare (only 2%), which suggests that the pathogenesis of bleeding DU is similar to that of non-complicated DU disease.


Assuntos
Anti-Inflamatórios não Esteroides/efeitos adversos , Úlcera Duodenal/complicações , Infecções por Helicobacter/complicações , Helicobacter pylori , Úlcera Péptica Hemorrágica/etiologia , Idoso , Biópsia , Testes Respiratórios , Estudos de Casos e Controles , Duodenoscopia , Feminino , Infecções por Helicobacter/diagnóstico , Infecções por Helicobacter/epidemiologia , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Úlcera Péptica Hemorrágica/diagnóstico , Prevalência , Estudos Prospectivos , Fatores de Risco , Inquéritos e Questionários , Ureia
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA