Related Experiment Video
Updated: Feb 16, 2026

A Component-resolved Diagnostic Approach for a Study on Grass Pollen Allergens in Chinese Southerners with Allergic Rhinitis and/or Asthma
Published on: June 4, 2017
Occupational allergy to Spagulax®(Plantago ovata seed)
M Viñas1, F Pineda2, A Izquierdo-Domínguez3
1Servicio de Alergia del Consorci Sanitari de Terrassa, Barcelona, Spain Phone: +34 9373 10 007 ext. 1511
Summary:
We report the case of a 36-year-old male pharmaceutical laboratory worker. On handling Spagulax® sachets whose content is a laxative called Plantago ovata, he immediately presented rhinoconjunctivitis. Methods. Specific allergy study included SDS-PAGE with Western Blot and specific nasal challenge to Plantago ovata extract. Results. Prick by prick for Spagulax® was negative. Total IgE: 126.5 U/mL. Western Blot recognized two proteins of 15 and 20 kDa in the extract of Plantago ovata and three proteins of 15, 18 and 50 kDa in the extract of Plantago lanceolata. Conclusions. We present a case of occupational allergy due to inhalation of and/or contact with Plantago ovata seeds.
Related Concept Videos
Allergic Reactions
Allergic Reactions: Anaphylaxis
Allergic Drug Reactions
Fungal Phylum Ascomycota
Asthma-I: Introduction
Drug Toxicity: Allergic Reactions

