[Allergy and neurotoxicity induced by bee sting. Case report and literature review].

Under the heading of this subject we deal with stings by arthropods, making of bees, commenting on the composition of the poisons and the different local and general reactions that are differences that exist between the stings The venom contains many biologically active components such as melitin, phospholipase A2, apamin, mast cell degranulation peptide, hyaluronidase, histamine, and dopamine. That neurotoxic venom secretory phospholipases A2 (sPLA2) have specific receptors in brain membranes called N-type receptors that are likely to play a role in the molecular events leading to neurotoxicity of these proteins. The sPLA2 found in honeybee venom is neurotoxic and binds to this receptor with high affinity.

[Effects of methimazole on the evolution of the allergic rhinitis of patients with Graves' disease].

Background: The methimazole has long been used for treating Graves' disease to decrease thyroid hormone production and obtain a thyroid normofunction, but this drug has also immunosuppressive and immunomodulation effects.

Objective: To analyze in patients with Graves' disease treated with methimazole and allergic rhinitis, the clinical evolution of the allergic rhinitis with the immunosuppressive and immunomodulation effects of the methimazole.

Patients And Methods: A comparative and observational study was done in the Mexico's General Hospital, in twenty-six patients with Graves' disease treated with methimazole 10 mg, thyroid profile was done, and when subjects obtained a thyroid normofunction continued with the same doses of methimazole and received also 12.

[Peripheral anticholinergic syndrome].

This is a case report of a woman of 38 years old, studied and analyzed at the service of allergy and immunology with clinical manifestations of allergic rhinitis; studies of laboratory, cabinet and intradermal test were made to corroborate this diagnosis and the treatment with specific hyposensitization, oral antihistaminines and inhaled steroids was started. Two years later the patient referred urinary retention without important antecedents, so, a peripheral anticholinergic syndrome (PAS) was suspected, a urodynamic test study was carried out consisting in a uroflujometry, static and dynamic urethral profile, cystometry, flow pressure study and electromyography, which diagnosed low urinary obstruction (functional) and vesical sphincter pseudodysfunction, demonstrating the PAS associated with oral antihistamines.

Maize (Zea mays): allergen or toleragen? Participation of the cereal in allergic disease and positivity incidence in cutaneous tests.

Background: The maize (zea mays) is considered one of the fundamental nutrients in the diet of the Mexican population. It can cause allergic reactions, according to reports from countries other than Mexico.

Objective: To know the participation of maize in the etiology of allergic disease and the incidence of positivity to its antigens by cutaneous tests, in Mexican patients.