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1.
Allergol. immunopatol ; 47(3): 246-253, mayo-jun. 2019. tab
Artigo em Inglês | IBECS | ID: ibc-186485

RESUMO

Background: The prevalence of food allergy is on the rise on a global scale. Objective: To determine the prevalence of food hypersensitivity (FHS) and probable food allergy (PFA), as well as the foods and factors associated with these occurrences. Methods: A cross-sectional study was carried out among 1992 adolescents (aged 15-18 years). Each adolescent answered a structured questionnaire. A multivariate analysis was used to identify the association between the variables. Results: The prevalence of FHS was 10.6% (the most commonly associated foods were shrimp, cow's milk and avocado) and the PFA was 7.8% (shrimp, cow's milk and pecan). The prevalences of oral allergy syndrome, food-associated urticaria and systemic reaction were 4.9%, 3.6% and 1.5%, respectively. The following factors were associated with FHS: personal history of asthma (OR 1.63; 95% CI: 1.11-2.41), allergic rhinitis (OR 2.60; 95% CI: 1.75-3.87), atopic dermatitis (OR 2.07; 95% CI: 1.25-3.43), maternal history of asthma (OR 1.80; 95% CI: 1.02-3.16), atopic dermatitis (OR 6.11; 95% CI: 2.45-15.29), and female sex (OR 1.89; 95% CI: 1.38-2.59). PFA was associated with a personal history of asthma (OR 1.65; 95% CI: 1.06-2.56), allergic rhinitis (OR 2.46; 95% CI: 1.56-3.88), atopic dermatitis (OR 2.02; 95% CI: 1.15-3.54), paternal allergic rhinitis (OR 2.52; 95% CI: 1.15-5.51), maternal atopic dermatitis (OR 7.46; 95% CI: 2.93-19.00), and female sex (OR 1.89; 95% CI: 1.31-2.72). Conclusion: The adverse reactions associated with foods among late adolescents are a frequent occurrence, and the most commonly associated factor is atopy


No disponible


Assuntos
Humanos , Animais , Masculino , Feminino , Adolescente , Alérgenos/imunologia , Hipersensibilidade Alimentar/epidemiologia , Fatores Sexuais , Proteínas de Artrópodes/imunologia , Estudos Transversais , México/epidemiologia , Proteínas do Leite/imunologia , Penaeidae/imunologia , Persea/imunologia , Prevalência , Fatores de Risco , Autorrelato , Inquéritos e Questionários
2.
Int. microbiol ; 20(2): 95-104, jun. 2017. graf, tab, ilus
Artigo em Inglês | IBECS | ID: ibc-164434

RESUMO

The biocontrol rhizobacterium Pseudomonas chlororaphis PCL1606 has the ability to protect avocado plants against white root rot produced by the phytopathogenic fungus Rosellinia necatrix. Moreover, PCL1606 displayed direct interactions with avocado roots and the pathogenic fungus. Thus, nonmotile (flgK mutant) and non-chemotactic (cheA mutant) derivatives of PCL1606 were constructed to emphasize the importance of motility and chemotaxis in the biological behaviour of PCL1606 during the biocontrol interaction. Plate chemotaxis assay showed that PCL1606 was attracted to the single compounds tested, such as glucose, glutamate, succinate, aspartate and malate, but no chemotaxis was observed to avocado or R. necatrix exudates. Using the more sensitive capillary assay, it was reported that smaller concentrations (1 mM) of single compounds elicited high chemotactic responses, and strong attraction was confirmed to avocado and R. necatrix exudates. Finally, biocontrol experiments revealed that the cheA and fglK derivative mutants reduced root protection against R. necatrix, suggesting an important role for these biological traits in biocontrol by P. chlororaphis PCL1606 (AU)


No disponible


Assuntos
Pseudomonas/isolamento & purificação , Raízes de Plantas/microbiologia , Controle Biológico de Vetores , Persea/microbiologia , Antibacterianos/análise
3.
Nutr. hosp ; 32(2): 696-701, ago. 2015. tab
Artigo em Inglês | IBECS | ID: ibc-140004

RESUMO

Introduction: the abuse of steroid hormones administered in chronic form may cause alterations in the lypidic profile, conveying na increase in the levels of LDL, and reduction in the levels of HDL. In average, 53.44% of the lypidic composition of the avocado core is composed of oleic acid (which is a phytosterol) and the study of the hypolipemiating effect of these substances has been performed aiming at the prevention and control of dislypidemias. Objective: to assess the potential hypolipemiant power of the avocado oil on the lypidogram of adult male Wistar rats submitted to prolonged androgenic hiperestimulation. Materials and methods: twenty eight Wistar rats were divided in 4 groups of 7 animals: the control group (CG); Avocado Oil Group (AOG) fed with a staple based on Avocado Oil; Induced Grupo (IG); and the Induced Grupo fed with a staple based on Avocado Oil (AOIG). The inducing was performed through surgery to subcutaneously implant sillicon pellets suffed with 1ml of testosterone propionate which were replaced at every 4 weeks. Results: VLDL (AOIG: 28.14±4.45; IG:36.83±5.56 mg/ml); Triglicerides (AOIG: 140.07±22.66; IG: 187.2±27 mg/ml); HDL (AOIG: 40, 67±1.2; GI: 35.09±0.8; AOG: 32.31±2.61 e CG: 32.36±4.93mg/ml) Testosterone (AOIG:1.42±0.46; GI: 2.14±0.88; AOG: 2.97±1.34 e CG:1.86±0.79ng/ml). Conclusion: avocado Oil exerted a direct regulating effect on the lypidic profile, acting efficiently on animals submmited to androgenic stimulation through a prolonged period (AU)


Introducción: el uso abusivo de hormonas esteroides administradas crónicamente puede ocasionar cambios en el perfil lipídico, lo que lleva a un aumento de LDL y niveles reducidos de HDL. El promedio (53,44%) de la composición de lípidos de la pulpa de aguacate está compuesto por ácido oleico (que es un fitosterol), y el estudio del efecto hipolipemiante de estas sustancias se ha celebrado para la prevención y el control de la dislipemia. Objetivo: evaluar el potencial de reducción de lípidos del aceite de aguacate en ratones Wistar machos adultos sometidos a hiperestimulación androgénica prolongada. Material y métodos: veintiocho ratas se dividieron en 4 grupos de 7 animales: Grupo Control (GC); Grupo de Aceite de Aguacate (GOA), alimentado a base de aceite de aguacate; Grupo Inducido (GI) y el grupo alimentado con base de aceite de aguacate inducida por la dieta (GIOA). La indución fue hecha mediante perdigones de silicona subcutáneos, implantados por cirugía, llenos de 1 ml de propionato de testosterona, que fueron cambiados cada 4 semanas. Resultados: VLDL (GIOA: 28,14 ± 4,45; GI: 36,83 ± 5,56 mg/ml); triglicéridos (GIOA: 140.07 ± 22.66, GI 187: 2 ± 27 mg/ml); HDL (GIOA: 40,67 ± 1,2; GI: 35,09 ± 0,8; GOA: 32,31 ± 2,61 eGC: 32,36 ± 4,93 mg/ml); testosterona (GIOA: 1,42 ± 0,46; GI: 2,14 ± 0,88; GOA: 2,97 ± 1,34 eGC: 1,86 ± 0,79 ng/ml). Conclusión: El aceite de aguacate ha tenido un efecto regulador directo sobre el perfil lipídico, actuando eficazmente en los animales sometidos a estimulación de andrógenos durante períodos prolongado (AU)


Assuntos
Animais , Feminino , Masculino , Camundongos , Persea , Persea/efeitos da radiação , Lipoproteínas HDL/análise , Lipoproteínas HDL , HDL-Colesterol/análise , Lipoproteínas LDL/análise , Ácido Oleico/isolamento & purificação , Lipídeos/análise , Modelos Animais , Fitosteróis/análise , Fitosteróis/farmacocinética , Ratos Wistar/fisiologia , Hormônios Esteroides Gonadais/análise , Hormônios Esteroides Gonadais/metabolismo , Hormônios Esteroides Gonadais/uso terapêutico
4.
Allergol. immunopatol ; 29(5): 212-221, sept. 2001.
Artigo em Espanhol | IBECS | ID: ibc-8474

RESUMO

En las dos últimas décadas del siglo XX, la alergia al látex se ha convertido en una auténtica epidemia.Los estudios epidemiológicos demuestran que del 3-25 por ciento del personal sanitario es alérgico al látex. Los grupos de riesgo principales son trabajadores sanitario, operarios de fábrica de látex y niños con espina bífida y anomalías urogenitales.Bajo el punto de vista alergénico, el látex tiene 240 péptidos componentes, pero alrededor de 50 son capaces de fijar IgE. El factor elongación del látex Hevd1, alergeno relevante en pacientes con espina bífida. La proheveína (hev B6) se comporta como alergeno mayor, ya que capta IgE en la mayoría de los sueros de alérgicos al látex.En definitiva, la naturaleza del látex es compleja y es una mezcla alergénica que depende de las variables químicas, inmunológicas y epidemiológicas.Las proteínas del látex muestran una fuerte reactividad cruzada con diferentes proteínas procedentes de frutas y granos vegetales. Como son el aguacate, patata, plátano, tomate, castaña y kiwi. Estudios in vivo, han demostrado que la kitinasa tipo I de aguacate y castaña se comportan como alergenos mayores en pacientes alérgicos con el síndrome látex-frutas.Las manifestaciones clínicas relacionadas con la utilización del producto del látex, van a depender de la vía de exposición, a la cantidad del alergeno contactado y la variabilidad individual.El método diagnóstico más útil es el prick test el más rentable. Se recomiendan diversas normas perioperatorias en pacientes sensibilizados al látex, así como diferentes alternativas para los guantes de goma.En relación con el tratamiento etiológico (inmunoterapia) cada vez es mayor el número de trabajos que describen su eficacia, utilizando diferentes pautas y vías de administración. Estos datos preliminares, alientan la esperanza de que en un futuro próximo estuviera disponible una herramienta terapéutica de naturaleza inmunomoduladora que sirviera para paliar la epidemia de alergia al látex (AU)


In the last two decades of the 20th century, latex allergy has reached epidemic proportions. Epidemiological studies demonstrate that 3-25 % of health personnel is allergic to latex. The main risk groups are health workers, machine operators in latex factories, and children with spina bifida and urogenital anomalies. From the allergenic point of view, latex contains 240 peptides but approximately 50 are able to react to IgE. Latex elongation factor Hevdl is the relevan allergen in patients with spina bifida. Prohevein (hev B6) behaves as a major allergen, since it reacts to IgE in most of the sera of patients with latex allergy. The nature of latex is complex; it is an allergenic mixture that depends on chemical, immunological and epidemiological variables. Latex proteins show strong cross reactivity with several proteins from fruit and vegetable grains such as avocado, potato, banana, tomato, chestnut, and kiwi. In vivo studies have shown that class I chitinase from avocado and chestnut behave as major allergens in allergic patients with latex-fruit syndrome. The clinical manifestations related to the use of latex products depend on the type of exposure, the amount of the allergen, and individual variability. The most useful diagnostic method is the skin prick test. Several perioperative guidelines are recommended in patients sensitized to latex as well as various alternatives to rubber gloves. An increasing number of studies describe the efficacy of etiological treatment (immunotherapy), using different guidelines and routes of administration. These preliminary data encourage the hope that in the near future immunomodulatory therapy will be available to mitigate against the latex allergy epidemic (AU)


Assuntos
Criança , Adulto , Masculino , Feminino , Humanos , Hipersensibilidade ao Látex , Fatores de Risco , Cateterismo Urinário , Prevalência , Epitopos Imunodominantes , Euphorbiaceae , Proteínas de Plantas , Nozes , Estudos Retrospectivos , Persea , Dessensibilização Imunológica , Reações Cruzadas , Alérgenos , Látex , Imunoglobulina E , Exposição Ambiental , Pessoal de Saúde , Hipersensibilidade Alimentar , Testes Cutâneos , Exposição Ocupacional , Doenças Profissionais
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