Bee pollen sensitivity in airborne pollen allergic individuals.
ABSTRACT Physicians who practice alternative medicine often prescribe bee pollen as a food supplement and a treatment for various ailments.
To determine the qualitative and quantitative composition of bee pollen and to investigate the cutaneous reactivity of atopic patients to bee pollen extracts.
The absolute number of pollen grains per gram of bee pollen was calculated, and morphologic identification of the botanical family was performed. Five extracts of bee pollen were prepared for skin prick testing, according to standard methods. Two hundred two volunteers participated in the study; 145 were atopic patients with respiratory allergy. The remaining 57 were healthy volunteers or nonatopic patients and served as a control group. All participants underwent skin prick testing with a standard battery of 6 aeroallergens (olive, grasses mix, Parietaria, mugwort, Dermatophagoides pteronyssinus, and Dermatophagoides farinae) and with all homemade bee pollen extracts.
All samples of bee pollen contained Oleaceae pollen in high concentrations. Small amounts of anemophilous pollen (Compositeae, Chenopodiaceae) were detected in various samples. A strong positive correlation was observed between cutaneous reactivity to bee pollen extracts and olive, grasses, and mugwort.
Bee pollen contains a large amount of pollen, which belongs to various allergenic families of plants. Bee pollen retains its allergenic potential as demonstrated by strong cutaneous responses to bee pollen extracts observed in atopic patients in contrast to nonatopic subjects. Regarding pollen allergic individuals, further studies are needed to evaluate the safety of ingesting large amounts of bee pollen.
Article: Nutrition and the allergic athlete.[show abstract] [hide abstract]
ABSTRACT: Nutritional management of the allergic athlete centers around providing a diet adequate to meet the increased needs of the athlete at the same time that it is modified by the exclusion of any problematic foods. The athlete has an increased need for water, total energy, carbohydrate, B vitamins, and perhaps protein, the last two of which are usually met when the diet fulfills the energy requirements of the athlete. Requirements for electrolytes are minimally increased, and the need for additional iron is unclear in light of "sports anemia." There is no evidence to support the use of vitamins C and E as ergogenic aids; however, the findings relating vitamin C to bronchospasm and bronchial hyperreactivity are interesting. Caffeine and bee pollen, often believed to increase performance, may be harmful for the allergic athlete. An approach for determining the problematic foods for the allergic athlete and necessary supplementation when they are avoided is given.Journal of Allergy and Clinical Immunology 06/1984; 73(5 Pt 2):728-34. · 12.05 Impact Factor
- [show abstract] [hide abstract]
ABSTRACT: A large number of allergenic proteins have now their complete cDNA sequences determined and in some cases also the 3D structures. It turned out that most allergens could be grouped into a small number of structural protein families, regardless of their biological source. Structural similarity among proteins from diverse sources is the molecular basis of allergic cross-reactivity. The clinical relevance of immunoglobulin E (IgE) cross-reactivity seems to be influenced by a number of factors including the immune response against the allergen, exposure and the allergen. As individuals are exposed to a variable number of allergenic sources bearing homologous molecules, the exact nature of the antigenic structure inducing the primary IgE immune response cannot be easily defined. In general, the 'cross-reactivity' term should be limited to defined clinical manifestations showing reactivity to a source without previous exposure. 'Co-recognition', including by definition 'cross-reactivity', could be used to describe the large majority of the IgE reactivity where co-exposure to a number of sources bearing homologous molecules do not allow unequivocal identification of the sensitizing molecule. The analysis of reactivity clusters in diagnosis allows the interpretation of the patient's reactivity profile as a result of the sensitization process, which often begins with exposure to a single allergenic molecule.Allergy 04/2004; 59(3):243-67. · 5.88 Impact Factor
- [show abstract] [hide abstract]
ABSTRACT: Asthma, together with, in some cases, anaphylaxis, was observed in seven subjects following ingestion of royal jelly, a secretion of honey bees which is used as a health tonic. To determine if reactions were IgE-mediated and to identify allergenic components of royal jelly. Skin-prick tests, immunoassays for specific IgE antibodies and protein blotting studies using patients' sera and anti-IgE second antibodies were employed. Immunoassays detected IgE antibodies to royal jelly proteins in sera of subjects who reacted to the substance. A total of 18 different IgE-binding components were detected on blots following electrophoretic separation of royal jelly under dissociating conditions. Examination of 63 sera from subjects allergic to bee venom showed that there is no direct relationship between IgE antibody reactivity to bee venom allergens and to royal jelly proteins although 38% of the sera reacted with a royal jelly solid phase. IgE antibody reactivity to royal jelly proteins was also detected in 52% of 75 subjects with allergies to inhalant and/or food allergens. Antibody binding of blotted royal jelly proteins was most marked in the molecular weight region 25-55 kDa and one component of MW approximately 55 kDa was detected by all of the reactive sera from royal jelly-allergic and control allergic subjects. Symptoms of asthma and anaphylaxis seen in subjects following ingestion of royal jelly were true IgE-mediated hypersensitivity reactions. The clinical significance of the antibodies found in the sera of control subjects is not known but they may arise in response to common inhalant allergens that show allergenic cross-reactivity with royal jelly.Clinical & Experimental Allergy 03/1996; 26(2):216-22. · 4.79 Impact Factor