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Registros recuperados: 27
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The Mathematical Biology of Human Infections Ecology and Society
Nowak, Martin A; Institute for Advanced Study; nowak@ias.edu.
Humans are constant victims of infectious diseases. Biomedical research during this century has led to important insights into the molecular details of immune defense. Yet, many questions relating to disease require a quantitative understanding of the complex systems that arise from the nonlinear interactions between populations of immune cells and infectious agents. Exploration of such questions has lead to a newly emerging field of mathematical biology describing the spread of infectious agents both within and between infected individuals. This essay will discuss simple and complex models of evolution, and the propagation of virus and prion infections. Such models provide new perspectives for our understanding of infectious disease and provide guidelines...
Tipo: Peer-Reviewed Reports Palavras-chave: CTL response; HIV; Antivirals; Epidemiology; Immune response; Infectious diseases; Mathematical biology; Models of evolution; Prions; Resistance; Treatment; Viruses.
Ano: 1999
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Vacina toxóide no controle da linfadenite caseosa. Infoteca-e
ALVES, F. S. F..
bitstream/item/26709/1/COT-42.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Brasil; Ceará; Caprino; Linfadenite caseosa; Doença animal; Bactéria; Vacina; Corynebacterium pseudotuberculosis; Goats; Caseous lymphadenitis; Animal diseases; Infectious diseases; Vaccines; Brazil.
Ano: 1998 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/514971
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Implicações do uso de solução de formol em abscessos, para o controle da Linfadenite caseosa. Infoteca-e
ALVES, F. S. F.; PINHEIRO, R. R.; OLIVEIRA, A. A. da F..
bitstream/item/26685/1/DOC-52.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Formol; Chemical disease control.; Abscesses; Controle; Caprino; Ovino; Doença animal; Linfadenite caseosa; Abscesso; Controle químico; Corynebacterium Pseudotuberculosis.; Goats; Sheep; Caseous lymphadenitis; Infectious diseases; Animal diseases; Disease control..
Ano: 2004 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/532490
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L'adaptation ecophysiologique et sanitaire de l'ecrevisse turque Astacus leptodactylus a des milieux saumatres: Contribution a l'astaciculture ArchiMer
Barbe, D; Lautier, J; Vernet, G; Vey, A.
This influence of salt media on different aspects of biological cycle and on most common pathogenic agents of Turkish freshwater crayfish Astacus leptodactylus is investigated survival and growing of juveniles O super(+) and intermediary individuals 1 super(+) are also studied. Total osmotic metabolism and reproduction, have been recorded. It appears that youngest individuals are particularly sensitive to low salinities (7 ppt.). Intermediary ones are more resistant nevertheless salinity does not improve neither survival nor growing. Copulation, laying and pleopod egg fixation are particularly affected by salt waters. The only promising application of salinity parameter on astaciculture could be whether prophylactic or curative treatment with concentrated...
Tipo: Text Palavras-chave: Astacus leptodactylus; Malacostraca; Infectious diseases; Sexual reproduction; Growth; Mortality; Survival; Osmotic adaptations; Crayfish culture; Pathology; Metabolism; Salinity; Ecophysiology; Astaciculture; Régulation osmotique; Reproduction; Survie; Croissance; Pathologie; Ecophysiologie; Salinité; Astacus leptodactylus; Ecrevisse.
Ano: 1983 URL: http://archimer.ifremer.fr/doc/1983/acte-1185.pdf
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Appearance and spread of diseases among bivalve molluscs in the northern hemisphere in relation to international trade ArchiMer
Renault, Tristan.
Bivalve mollusc culture is a well-developed marine aquaculture activity in many countries around the world, notably in the northern hemisphere. During the development of this activity, numerous countries have been confronted with infectious diseases of varying severity and duration. Research has been conducted to determine the aetiology, epidemiology and control measures for these epizootics. Major epizootics in bivalve molluscs have been caused by viruses, bacteria, fungi and protozoan parasites. Moreover, important commercial relations exist in marine mollusc culture between different geographical areas. This must be taken into account in explaining the appearance and the spread of some infectious diseases in several countries around the world. The...
Tipo: Text Palavras-chave: Northern hemisphere; International trade; Infectious diseases; Bivalve molluscs; Mollusques bivalves; Maladies infectieuses; Hémisphère Nord; Commerce internatioanal.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/1996/publication-2913.pdf
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Diseases of cultured molluscs in Australia ArchiMer
Lester, R.
Three mollusc species are cultured commercially in Australian tropical and warm temperate waters: the Sydney rock oyster Saccostrea commercialis , the pearl rock oyster is susceptible to two protozoans: Marteilia sydneyi , which is the cause of QX Disease and infects oysters during the summer; and Mikrocytos roughleyi which is associated with winter mortality. It also harbours mudworm, Polydora websteri a parasite farmers try to avoid by growing oysters on racks. Transported pearl oysters Pinctada maxima die with heavy infections of Vibrio harveyi . Cultured giant clams Tridacna gigas are pestered by pyramidellid snails and some carry Perkinsus sp., a protozoan common in reef bivalves. Deaths in mollusc hatcheries have been associated with Vibrio tubiashi...
Tipo: Text Palavras-chave: Protozoa; Alteromonas; Vibrio tubiashi; Perkinsus; Vibrio harveyi; Polydora websteri; Mikrocytos roughleyi; Saccostrea commercialis; Pinctada maxima; Tridacna gigas; Bivalvia; Parasites; Mortality; Pearl culture; Infectious diseases; Parasitic diseases.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1468.pdf
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Infectious pathology in mollusc and shrimp hatcheries ArchiMer
Mialhe, Eric.
Development of aquaculture has been linked to zootechnical mastering of larval production in hatcheries. Regular and excessive use of antibiotics (antifungal or antibacterial) may thus also be reduced, permitting to limit release of these products in sea-water and, consequently, avoiding progressive selection of resistant-strains.
Tipo: Text Palavras-chave: Viruses; Infectious diseases; Epidemiology; Pathogens; Bacterial diseases; Pathology; Larval development; Mollusc culture; Shrimp culture.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1487.pdf
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A review of the known hosts geographical range and current diagnostic procedures for the virus diseases of cultured penaeid shrimp ArchiMer
Lightner, D; Bell, T; Redman, R.
At least six virus diseases are presently known in cultured penaeid shrimp. Each of these six penaeid virus diseases (BP = Baculovirus penaei ; MBV = Penaeus monodon -type baculovirus (including PBV of Australian penaeids); BMN = baculoviral midgut gland necrosis; HPV = hepatopancreatic parvo-like virus; IHHNV = infectious hypodermal and hematopoietic necrosis virus; and REO = reo-like virus of the hepatopancreas) may be comprised by a multitude of individual strains, some of which are highly pathogenic to some penaeids, while being of little importance to others.
Tipo: Text Palavras-chave: Baculovirus penaei; Penaeus japonicus; Penaeus monodon; Malacostraca; Marine crustaceans; Necroses; Infectious diseases; Viruses; Diseases.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1481.pdf
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Antimicrobial activity of a marine isolate of Pseudomonas cepacia k2 from ruditapes decussatus OceanDocs
Chahad Bourouni, O.; Ktari, L.; Boudabbous, A.; El Bour, M..
Une souche de Pseudomonas cepacia, designée K2, isolée à partir de la palourde Ruditapes decussatus a montré une activité antibactérienne significative contre un certain nombre de bactéries marines, y compris Aeromonas hydrophila, Aeromonas salmonicida et Vibrio anguillarum qui sont les bactéries pathogènes les plus fréquemment signalées dans l'environnement marin, responsables d’une forte mortalité des poissons et des crustacés. Cette souche K2 a montré une capacité d’inhibition très rapide dès le début de sa croissance (après 8h d'incubation). L'intensité de son activité est très importante et a tendance à augmenter avec le temps d'incubation. Les études préliminaires sur la nature de l'inhibition a indiqué qu'au moins l'une des substances...
Tipo: Journal Contribution Palavras-chave: Infectious diseases; Pathogenic bacteria; Antibacterials; Aquaculture.
Ano: 2010 URL: http://hdl.handle.net/1834/4694
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Determinación de moléculas que intervienen en el sistema inmune del camarón blanco (Penaeus vannamei) en respuesta al uso de inmunoestimulantes. OceanDocs
Campa, A.I..
La acuacultura de crustáceos penaeidos constituye una actividad económicamente importante que genera elevados ingresos si se garantiza una producción óptima del mismo. Esta actividad está limitada en diferentes partes del mundo por enfermedades infecciosas provocadas entre otros, por bacterias, virus, hongos, parásitos y por el uso regular de antibióticos que han dirigido progresivamente a las poblaciones de cultivo a una situación crítica de resistencia. El estudio del sistema inmune en crustáceos comienza a ser una herramienta muy útil para el diseño de estrategias que permitan determinar y mejorar la respuesta del sistema de defensa del hospedero hacia los patógenos potenciales. Para ello, es requerido que las investigaciones básicas estén dirigidas a...
Tipo: Theses and Dissertations Palavras-chave: 832; Crustacean culture; Infectious diseases; Immunity; Crustacean culture; Infectious diseases; Immunity; Http://aims.fao.org/aos/agrovoc/c_1985; Http://aims.fao.org/aos/agrovoc/c_34024; Http://aims.fao.org/aos/agrovoc/c_3802.
Ano: 2002 URL: http://hdl.handle.net/1834/3413
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Recherche par « RT-PCR » des virus enteriques chez des moules (<Mytilus galloprovincialis>) et des palourdes (<Ruditapes decussatus>) OceanDocs
Aouni, M.; Essebai El Amri, D..
Dans cette étude comparative, deux méthodes d'extraction de quatre types de virus entériques pathogènes pour l’homme (virus de l’hépatite A, l’astrovirus, le norovirus et l’entérovirus) contaminant des moules (Mytilus galloprovincialis) et des palourdes (Ruditapes decussatus) ont été évaluées par l’application de la technique « Perverse Transcriptase- Polymerase Chain Reaction : RT-PCR ». Les échantillons des mollusques bivalves analysés ont été prélevés entre le mois de mars 2000 et le mois de septembre 2001 dans différents sites naturels de la lagune de Bizerte et sans subir l’étape de purification. Les résultats obtenus montrent que le taux de détection des virus par RT-PCR est meilleur lorsque les virus sont extraits à partir de l’estomac et de...
Tipo: Journal Contribution Palavras-chave: Digestive system; Human food; Infectious diseases; Marine molluscs; Pathogens; Public health; Mytilus galloprovincialis; Ruditapes decussatus; Digestive system; Public health; Infectious diseases; Pathogens.
Ano: 2005 URL: http://hdl.handle.net/1834/3755
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Liquid chromatographic determination of efficacy of incorporation of trimethoprim and sulfamethoxazole in brine shrimp (<i>Artemia</i> spp.) used for prophylactic chemotherapy of fish OMA
Nelis, H.; Léger, P.; Sorgeloos, P.; De Leenheer, A.P..
The brine shrimp <i>Artemia</i> , an excellent live food source in aquaculture, has been studied as a carrier to deliver selected chemotherapeutic agents to fish for prophylactic treatment of infectious diseases. To monitor the efficiency of incorporation of trimethoprim and sulfamethoxazole in <i><i>Artemia</i> franciscana</i>, a sensitive and specific analytical method was developed. It is based on homogenization of <i>Artemia</i> nauplii in methanol, extraction of lipids with hexane, solid-phase cleanup on C<sub>18</sub> cartridges, and reversed-phase liquid chromatography with detection at 210 nm. The method is sensitive (detection limit, on the order of 3 µg/g with a sample quantity of 30 mg...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Fish culture; Infectious diseases; Medicine; Artemia.
Ano: 1991 URL: http://www.vliz.be/imisdocs/publications/262329.pdf
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Selected bacterial strains protect <i>Artemia</i> spp. from the pathogenic effects of <i>Vibrio proteolyticus</i> CW8T2 OMA
Verschuere, L.; Heang, H.; Criel, G.R.J.; Sorgeloos, P.; Verstraete, W..
In this study <i>Vibrio proteolyticus</i> CW8T2 has been identified as a virulent pathogen for <i>Artemia</i> spp. Its infection route has been visualized with transmission electron microscopy. The pathogen affected microvilli and gut epithelial cells, disrupted epithelial cell junctions, and reached the body cavity, where it devastated cells and tissues. In vivo antagonism tests showed that pre-emptive colonization of the culture water with nine selected bacterial strains protected <i>Artemia</i> juveniles against the pathogenic effects. Two categories of the selected strains could be distinguished: (i) strains providing total protection, as no mortality occurred 2 days after the experimental infection with <i>V....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquatic animals; Bacteria; Biological control; Brine shrimp culture; Disease control; Infectious diseases; Microbiological analysis; Pathogenic bacteria; Artemia; Vibrio proteolyticus.
Ano: 2000 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=45
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Aerobic bacteria in oral cavity of Lancehead snakes (Bothrops atrox) with stomatitis Biological Sciences
Pereira, Heloisa Castro; Gomes, Dayane Olímpia; Hirano, Líria Queiroz Luz; Santos, André Luiz Quagliatto; Lima, Anna Monteiro Correia.
 Stomatitis is a common disease found on snake farms, and Gram-negative bacilli are the main etiological agents that play an important role as secondary sources of viral or parasitic infections. The purpose of this work was to identify the aerobic bacteria in the oral cavity of Bothrops atrox with stomatitis. Samples for microbiological examination were collected from 12 snakes bred on a commercial snake farm for venom extraction. Samples of the secretion in the oral cavity of each serpent presenting stomatitis were collected from fang sheath, using a cotton swab with sterile alginate. The samples were incubated and cultured on Petri dishes containing blood agar and XLD agar using the agar depletion technique. Bacterial growth occurred in all analyzed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 5.05.02.03-4 bacteriology; Infectious diseases; Reptilia; Squamata; Ophidia. Doenças Infecciosas de Animais.
Ano: 2017 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/34625
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Mechanism of action of probiotics BABT
Hemaiswarya,S; Raja,R.; Ravikumar,R.; Carvalho,Isabel S..
The modern diet doesn't provide the required amount of beneficial bacteria. Maintenance of a proper microbial ecology in the host is the main criteria to be met for a healthy growth. Probiotics are one such alternative that are supplemented to the host where by and large species of Lactobacillus, Bifidobacterium and Saccharomyces are considered as main probiotics. The field of probiotics has made stupendous strides though there is no major break through in the identification of their mechanism of action. They exert their activity primarily by strengthening the intestinal barrier and immunomodulation. The main objective of the study was to provide a deep insight into the effect of probiotics against the diseases, their applications and proposed mechanism of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anti-allergic; Gastrointestinal problems; Immunomodulation; Infectious diseases; Probiotics.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132013000100015
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Top 10 evidence-based recommendations from the Brazilian Society of Infectious Diseases for the Choosing Wisely Project BJID
Pasqualotto,Alessandro C.; Almeida,Camila S.; Kliemann,Dimas A.; Barcellos,Guilherme B.; Queiroz-Telles,Flávio; Abdala,Edson; Resende,Mariangela; Batista,Filipe P.; Vidal,José E.; Rocha,Jaime; Raboni,Sonia M.; Cimerman,Sergio; Gales,Ana C..
ABSTRACT The Choosing Wisely Initiative aims to collect statements from medical societies all over the world on medical interventions that result in no benefit to patients, with the potential to cause harm. In this article we present the views of the Diagnostic Laboratory Group at the Brazilian Society of Infectious Diseases (SBI). Ten experts from SBI were asked to list 10 diagnostic tests that were perceived as unnecessary in the field of infectious diseases. After voting for the more relevant topics, a questionnaire was sent to all SBI members, in order to select for the most important items. A total of 482 votes were obtained, and the top 10 results are shown in this manuscript. The Choosing Wisely statements of SBI should facilitate clinical practice...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Choosing wisely; Quality; Safety; Infectious diseases; Microbiology; Diagnostic tests; Healthcare administration.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702019000500331
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Health surveillance, biosafety and emergence and re-emergence of infectious diseases in Brazil BJID
Cardoso,Telma Abdalla de Oliveira; Navarro,Marli BM de Albuquerque; Costa Neto,Cristina; Moreira,Josino Costa.
The present paper presents compulsory notification data for infectious diseases and epidemiologic ones recorded at the Center for Strategic Information and Health Surveillance (CIEVS) for the period of March 2006 to April 2007. Data is presented in accordance with geographic distribution, time and risk classification of the etiologic agents found, according to Ministry of Health regulations. The importance of this epidemiologic surveillance system is presented, debating the main topics required for quality improvement and information analysis. It is concluded, from the analysis of epidemiologic events and their relation to risk management, that the compulsory notification system in Brazil is incomplete, irregular, delayed and, in a large percentage of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biosafety; Epidemiologic surveillance; Infectious diseases; Public health.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702010000500018
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Immunogenetics and infectious diseases: special reference to the mayor histocompatibility complex BJID
Alves,Crésio; Souza,Thaisa; Meyer,Isadora; Toralles,Maria Betânia P.; Brites,Carlos.
Many studies have tried to identify genetic markers for infectious diseases, some of them have focused on human leukocyte antigens (HLA). The products of HLA genes interact with surface-specific receptors of T lymphocytes, resulting in activation of the host's immune response. Association of bacterial, viral, parasitic and fungal infections with the host's HLA has been widely investigated. The type and strength of this association differs among distinct populations, as well as among racial and/or ethnic groups. The new molecular methods for the identification of the HLA alleles, and the resulting new nomenclature, have contributed to a better understanding of this system. Unfortunately, this information has not been adequately transmitted to clinicians,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HLA; Infectious diseases; Major histocompatibility complex.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000200010
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Recommendations for the treatment of osteomyelitis BJID
Lima,Ana Lucia L.; Oliveira,Priscila R.; Carvalho,Vladimir C.; Cimerman,Sergio; Savio,Eduardo.
With the advances in surgical treatment, antibiotic therapy and the current resources for accurate diagnosis and differentiated approaches to each type of osteomyelitis, better results are being obtained in the treatment of this disease. After a careful literature review carried out by a multiprofessional team, some conclusions were made in order to guide medical approach to different types of osteomyelitis, aiming to obtain better clinical outcomes and reducing the social costs of this disease. Acute and chronic osteomyelitis are discussed, with presentation of the general epidemiological concepts and the commonly used classification systems. The main guidelines for the clinical, laboratory and imaging diagnosis of infections are discussed, as well as the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Osteomyelitis; Bone and joint infection; Soft tissue infection; Infectious diseases.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702014000500526
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Admission of foreign citizens to the general teaching hospital of bologna, northeastern Italy: An epidemiological and clinical survey BJID
Sabbatani,Sergio; Baldi,Elena; Manfredi,Roberto; Chiodo,Francesco.
BACKGROUND: The emergency regarding recent immigration waves into Italy makes continued healthcare monitoring of these populations necessary. METHODS: Through a survey of hospital admissions carried out during the last five years at the S. Orsola-Malpighi General Hospital of Bologna (Italy), all causes of admission of these subjects were evaluated, together with their correlates. Subsequently, we focused on admissions due to infectious diseases. All available data regarding foreign citizens admitted as inpatients or in Day-Hospital settings of our teaching hospital from January 1, 1999, to March 31, 2004, were assessed. Diagnosis-related group (DRG) features, and single discharge diagnoses, were also evaluated, and a further assessment of infectious...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Foreign citizens; Hospitalization; Immigration; Demographic and epidemiological features; Clinical diagnoses; Infectious diseases; Outcome.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702006000200001
Registros recuperados: 27
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