Allergen Extract
Mostrando 1-12 de 25 artigos, teses e dissertações.
-
1. IgE cross-reactivity between Lolium multiflorum and commercial grass pollen allergen extracts in Brazilian patients with pollinosis
Lolium multiflorum (Lm) grass pollen is the major cause of pollinosis in Southern Brazil. The objectives of this study were to investigate immunodominant components of Lm pollen allergens and the cross-reactivity of IgE with commercial grass pollen allergen extracts. Thirty-eight serum samples from patients with seasonal allergic rhinitis (SAR), 35 serum sam
Brazilian Journal of Medical and Biological Research. Publicado em: 22/01/2010
-
2. Produção de alérgeno Blo t 5 recombinante (rBlo t 5) de Blomia tropicalis e reatividade de anticorpos IgE a alérgenos Blo t 5 nativo e recombinante em pacientes atópicos
Allergies are caused by immunological reactions to allergens, which are substances capable of triggering specific IgE responses in genetically predisposed subjects. In tropical and subtropical regions, allergens derived from B. tropicalis are important causes of IgE-mediated sensitization among patients with asthma and allergic rhinitis. The aim of this stud
Publicado em: 2010
-
3. Identificação de isoformas antigênicas de Dermatophagoides pteronyssinus reconhecidas por anticorpos IgE e IgG1 em pacientes atópicos e não atópicos
The house dust mite Dermatophagoides pteronyssinus (Dp) is a major source of indoor allergens in the world and considered important for sensitization of genetically predisposed subjects. Some allergens from this mite can occur as isoallergens with differences in amino acid sequences or glycosylation, leading to differences in allergenic sensitization. The ai
Publicado em: 2010
-
4. Anticorpos IgA, IgE e IgG4 específicos a Dermatophagoides pteronyssinus e aos seus alérgenos principais, Der p 1 e Der p 2, em amostras de soro e saliva de crianças e adolescentes alérgicos e não-alérgicos
Allergic rhinitis (AR) is a global public health problem and it is gaining importance due to the rapid increase in its prevalence worldwide. House dust mites as Dermatophagoides spp. are the major sources of allergen sensitization in genetically predisposed subjects. This study aimed to evaluate serum and salivary IgA, IgE and IgG4 levels to Dermatophagoides
Publicado em: 2009
-
5. Use and limitations of peripheral tolerance in experimental model of asthma / Uso e limitações da tolerância imunológica periférica em modelo de asma experimental
Mucosal administration of soluble Ags, before the sensitization with the same Ag, leads to mucosal tolerance. We studied the effect of i.n. LPS during the induction of ovalbumin (OVA) nasal tolerance. The majority of murine models of asthma used OVA as allergen,thus, we also used Blomia tropicalis (Bt) extract, a mite more common in asthmatic patients. Featu
Publicado em: 2009
-
6. Humoral and cellular immune responses to Blomia tropicalis and concanavalin A-binding fractions in atopic patients
Blomia tropicalis, Dermatophagoides pteronyssinus and D. farinae are prevalent house dust mites. Concanavalin A-binding components derived from B. tropicalis (Bt-ConA extract) are highly immunogenic in allergic diseases. The aim of the present study was to evaluate the humoral and cellular immune responses to B. tropicalis in mite-sensitized patients. A tota
Brazilian Journal of Medical and Biological Research. Publicado em: 2008-09
-
7. Resposta imune humoral e celular a Blomia tropicalis e sua fração ligante de Concanavalina A em pacientes atópicos
Blomia tropicalis (Bt), Dermatophagoides pteronyssinus (Dp) and D. farinae (Df) are the prevalent house dust mites (HDMs). Concanavalin A-binding components derived from B. tropicalis (Bt-ConA extract) have shown to be highly immunogenic in allergic diseases. This study aimed to evaluate the humoral and cellular immune responses to B. tropicalis in sensitize
Publicado em: 2007
-
8. Resposta imune humoral e celular a Blomia tropicalis e sua fraÃÃo ligante de Concanavalina A em pacientes atÃpicos
Blomia tropicalis (Bt), Dermatophagoides pteronyssinus (Dp) and D. farinae (Df) are the prevalent house dust mites (HDMs). Concanavalin A-binding components derived from B. tropicalis (Bt-ConA extract) have shown to be highly immunogenic in allergic diseases. This study aimed to evaluate the humoral and cellular immune responses to B. tropicalis in sensitize
Publicado em: 2007
-
9. Alérgenos de pólen de Lolium multiflorum (Lam. 1779): determinação da reatividade cruzada de anticorpos IgE aos componentes alergênicos de extratos comerciais de gramíneas
Background: Lolium multiflorum (Lm) grass pollen, Poaceae family, is the major cause of pollinosis in South Brazil. There are no studies evaluating the cross-reactivity between allergenic fractions from L. multiflorum and other pollen grass species. Objective: To evaluate the sensitization to Lm pollen allergens in patients with pollinosis through the detect
Publicado em: 2007
-
10. Responses of IgE, IgG1, and IgG4 to concanavalin A-binding Blomia tropicalis antigens in allergic patients
Blomia tropicalis (Bt) and Dermatophagoides pteronyssinus (Dp) are the prevalent house dust mites in tropical countries and are associated with allergic diseases. Glycosylated antigens are highly immunogenic and involved in different pathologies. We evaluated the presence of IgE, IgG1, and IgG4 to concanavalin A-binding antigens (Bt-Con-A) isolated from Bt-t
Brazilian Journal of Medical and Biological Research. Publicado em: 25/09/2006
-
11. Mecanismos de formação papel dos corpúsculos lipídicos nos eosinófilos na resposta inflamatória alergica / Mechanisms of fomatiom of the Paper of the Lipid Bodies in Eosinophils in the allergic inflammatory response
Lipid bodies are lipid-rich cytoplasmic inclusions, which are candidates to play a major role in the formation of eicosanoid mediators during inflammatory response. Lipid body formation/function in vivo at sites of allergic inflammation were never investigated. Here, we studied lipid body formation in vivo within eosinophils recruited to sites of allergic in
Publicado em: 2006
-
12. Reatividade anticórpica IgE, IgG1 e IgG4 específica a antígenos de pólen de Lolium multiflorum (Lam. 1779) em pacientes com polinose
Introdução: A rinite alérgica estacional ou doença polínica se deve à sensibilização aos alérgenos de pólens, geralmente de gramíneas. Lolium multiflorum (Lm) é uma gramínea com pólens de elevado potencial alergênico, sendo a principal gramínea causadora de polinose na região Sul do Brasil. Objetivos: Analisar três diferentes métodos de ex
Publicado em: 2006