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Biología y conservación del Cóndor Andino (Vultur gryphus) en Argentina
Lambertucci,Sergio A.;
El hornero , 2007,
Abstract: the andean condor (vultur gryphus) is currently distributed along western south america. although it is considered a near threatened species, included in cites i, little is known about many aspects of its biology. here, i present a review of the biology and conservation status of the andean condor, focusing on the available information for argentina. i also suggest research needs to promote its conservation. the andean condor populations have been critically reduced in the northern portion of its distributional range. southern populations are healthier but some signs of retraction still remain. this species has one of the lowest reproductive rates and highest survival rates among birds. behavioural characteristics (large aggregations to feed and roost) make the andean condor very vulnerable to environmental disturbances that may cause a massive loss of individuals, considering that it has a slow demographic response. some of the current threats to condors include the false belief that it is a hunter species, poisoning and lead consumption, electrocution, furtive hunting, competition for food, and traps, among others. it is necessary to estimate population numbers and trends as well as survival rates, to weigh up the mortality factors, to detect important areas for the species, and to determine the distribution and availability of food in each country. the biology of the andean condor together with the lack of knowledge and the human caused threats create a dangerous combination for its survival.
Acute schistosomiasis mansoni: revisited and reconsidered
Lambertucci, José Roberto;
Memórias do Instituto Oswaldo Cruz , 2010, DOI: 10.1590/S0074-02762010000400012
Abstract: acute schistosomiasis is a systemic hypersensitivity reaction against the migrating schistosomula and eggs. a variety of clinical manifestations appear during the migration of schistosomes in humans: cercarial dermatitis, fever, pneumonia, diarrhoea, hepatomegaly, splenomegaly, skin lesions, liver abscesses, brain tumours and myeloradiculopathy. hypereosinophilia is common and aids diagnosis. the disease has been overlooked, misdiagnosed, underestimated and underreported in endemic areas, but risk groups are well known, including military recruits, some religious congregations, rural tourists and people practicing recreational water sports. serology may help in diagnosis, but the finding of necrotic-exudative granulomata in a liver biopsy specimen is pathognomonic. differentials include malaria, tuberculosis, typhoid fever, kala-azar, prolonged salmonella bacteraemia, lymphoma, toxocariasis, liver abscesses and fever of undetermined origin. for symptomatic hospitalised patients, treatment with steroids and schistosomicides is recommended. treatment is curative in those timely diagnosed.
Treatment of schistosomiasis: gathering stones together
Lambertucci, J. R.;
Memórias do Instituto Oswaldo Cruz , 1995, DOI: 10.1590/S0074-02761995000200006
Abstract: in this paper the treatment of schistosomiasis is examined under the following headings: cercarial dermatitis, katayama fever, schistosomiasis in the immunosuppressed host and treatment of therapeutic failures.
Acute schistosomiasis: clinical, diagnostic and therapeutic features
Lambertucci, J. R.;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1993, DOI: 10.1590/S0036-46651993000500003
Abstract: three distinct syndromes caused by schistosomiasis have been described: cercarial dermatitis or swimmer's itch, acute schistosomiasis or katayama fever, and chronic schistosomiasis. complications of acute schistosomiasis have also been reported. the absence of a serological marker for the acute stage has hindered early diagnosis and treatment. recently, an elisa test using klh (keyhole limpet haemocyanin) as antigen, has proved useful in differentiating acute from chronic schistosomiasis mansoni. clinical and experimental evidence indicate that steroids act synergistically with schistosomicides in the treatment of katayama syndrome. in this paper, clinical, diagnostic and therapeutic features of acute schistosomiasis are updated.
Cliffs Used as Communal Roosts by Andean Condors Protect the Birds from Weather and Predators
Sergio A. Lambertucci, Adriana Ruggiero
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0067304
Abstract: The quality and availability of resources influence the geographical distribution of species. Social species need safe places to rest, meet, exchange information and obtain thermoregulatory benefits, but those places may also serve other important functions that have been overlooked in research. We use a large soaring bird that roosts communally in cliffs, the Andean condor (Vultur gryphus), as a model species to elucidate whether roost locations serve as a refuge from adverse weather conditions (climatic refuge hypothesis, CRH), and/or from predators or anthropogenic disturbances (threats refuge hypothesis, TRH). The CRH predicts that communal roosts will face in the opposite direction from where storms originate, and will be located in climatically stable, low precipitation areas. The TRH predicts that communal roosts will be large, poorly accessible cliffs, located far from human-made constructions. We surveyed cliffs used as communal roosts by condors in northwestern Patagonia, and compared them with alternative non-roosting cliffs to test these predictions at local and regional scales. We conclude that communal roosting places provide refuge against climate and disturbances such as, for instance, the threats of predators (including humans). Thus, it is not only the benefits gained from being aggregated per se, but the characteristics of the place selected for roosting that may both be essential for the survival of the species. This should be considered in management and conservation plans given the current scenario of global climate change and the increase in environmental disturbances.
Esquistossomose e hepatites virais: uma revis?o
Serufo, José Carlos;Lambertucci, José Roberto;
Revista da Sociedade Brasileira de Medicina Tropical , 1997, DOI: 10.1590/S0037-86821997000400007
Abstract: the papers published on the association of schistosomiasis with viral hepatitis (b, c and d) are reviewed. the shortcomings of each work are pointed out and suggestions are forwarded to try and direct the investigations on this probable interation.
A associa??o entre a toxocaríase humana e os abscessos piogênicos
Rayes, Abdunnabi Ahmed;Lambertucci, José Roberto;
Revista da Sociedade Brasileira de Medicina Tropical , 1999, DOI: 10.1590/S0037-86821999000400014
Abstract: the association between hepatic abscesses and schistosomiasis mansoni was confirmed by clinical and experimental studies. other parasites may cause systemic immunologic changes and local structural alterations in the affected organs that can facilitate the seeding of these areas by bacteria. tropical pyomyositis, pyogenic liver and renal abscesses are frequent diseases in tropical areas. the visceral larva migrans syndrome is caused by the presence, in the human body, of larvae of worms that have other animals as their definitive host, most commonly being caused by toxocara canis. the larvae migrate to various body organs leading to many inflammatory reactions in the form of granuloma and tissue necrosis. in this review we discuss the possible host-parasite-bacteria interactions that would favour the formation of abscesses in the organs involved by the larva of t. canis and present preliminary results of a clinical and experimental study undertaken during the last four years to define the role of this parasite in the pathogenesis of the abscesses.
A associa o entre a toxocaríase humana e os abscessos piogênicos
Rayes Abdunnabi Ahmed,Lambertucci José Roberto
Revista da Sociedade Brasileira de Medicina Tropical , 1999,
Abstract: A associa o entre o abscesso hepático e a esquistosomose mans nica foi confirmada por estudos clínicos e experimentais. Outros parasitos, como a larva de Toxocara canis, podem causar altera es imunológicas sistêmicas e estruturais nos órg os acometidos que favorecem a instala o e o crescimento da bactéria. A piomiosite tropical, o abscesso hepático piogênico e o abscesso renal s o doen as freqüentes nos países tropicais e muitas vezes n o se encontra doen a de base que poderia explicá-las. A síndrome de larva migrans visceral é causada pela presen a no organismo humano de larvas de vermes que têm outros animais como hospedeiro definitivo sendo a T. canis o agente mais comum. As larvas migram por vários órg os causando rea o inflamatória na forma de granuloma com necrose tecidual. Nesta revis o discutem-se os possíveis mecanismos de intera o entre o hospedeiro, o parasito e a bactéria que podem favorecer a forma o de abscessos nos órg os acometidos pela larva de T. canis e resumem-se alguns resultados preliminares de trabalho clínico-experimental realizado durante os últimos quatro anos para definir o papel deste parasito na patogenia dos abscessos.
Esquistossomose e hepatites virais: uma revis o
Serufo José Carlos,Lambertucci José Roberto
Revista da Sociedade Brasileira de Medicina Tropical , 1997,
Abstract: Os principais estudos sobre a associa o esquistossomose e hepatite pelos vírus B, C e D s o apresentados e discutidos. As limita es de cada estudo s o apontadas e os autores sugerem novos caminhos na investiga o desta provável intera o.
Febre de origem indeterminada em adultos
Lambertucci, José Roberto;ávila, Renata Eliane de;Voieta, Izabela;
Revista da Sociedade Brasileira de Medicina Tropical , 2005, DOI: 10.1590/S0037-86822005000600012
Abstract: fever of unknown origin has been defined as axillary temperature higher than 37.8oc on several occasions, persisting without diagnosis for at least 3 weeks in spite of at least 1 week's investigation in hospital. lately, the definition has been modified and extended to reflect evolutionary changes in clinical practice. in response to this new evolving environment, cases of fever of unknown origin are currently classified as: classic, nosocomial, in neutropenia, and human immunodeficiency virus-related. the objective of our review was to try and define and to update the information on the subject.
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