Cases Of Occupational Allergy Research Articles

Anaphylactic Shock Due to Psyllium (<i>Plantago ovate</i> Seed) Allergy: A Case Report

The seeds of Plantago ovata, called psyllium or ispaghula, have been used in the preparation of bulk laxatives. Nowadays, it is also used as an ingredient in bakery and breakfast cereals to increase dietary fiber and to give baking products fluffiness and viscosity. Mostly, there are described cases of occupational allergy that handle Plantago ovata seeds in powder laxatives and some cases of anaphylaxis after eating products containing psyllium. This case report is about a geriatric assistant who had an anaphylactic shock after eating a multigrain gluten-free piece of bread containing psyllium, who presented a positive skin test with psyllium in the allergy study. We recommended to the patient to avoid the ingestion and the inhalation at work of Plantago ovata seeds and to carry self-injectable adrenaline. With this case, we would like to highlight the growing uses of psyllium, especially in bakery products, and that it can behave like a hidden allergen.

Cisplatin. Documentation of proposed values of occupational exposure limits (OELs)

Cisplatin. Documentation of proposed values of occupational exposure limits (OELs)

The protease bromelain breaks oral tolerance and promotes sensitization of mice in a adjuvant-free murine model of pineapple (A. comosus) anaphylaxis

Background Allergies represent a socioeconomic problem that has affected increasing world population. A range of respiratory allergens are themselves proteases or are associated with proteolytic activity. Bromelain is a mixture of cysteine proteases present in the leaves and fruit Ananas comosus, with several pharmacological applications and is widely used in the food industry. Cases of occupational allergy are described in the literature. We propose investigate the contribution of Bromelain in anaphylaxis induced by Ananas comosus in a murine model.

Vicia fabaHypersensitivity and ASA Intolerance in a Farmer: A Case Report

The IgE-mediated allergic reactions to food are caused, generally, by ingestion. However, they can be rarely induced by exposure to airborne food particles through the handling or the cooking. Vicia faba is a vegetable which belongs to Legumes or Fabaceae family, Fabales order. Allergic reactions after ingestion of legumes and cases of asthma after exposure to the cooking vapors have been reported in the literature. A paper assessed the volatile substances (insect repellents) released by V. faba. The authors demonstrated that this plant produces several chemical substances, such as small quantities of methyl salicylate. We describe a case of occupational allergy, induced by handling during picking up of fresh broad beans, in a farmer with history of adverse reaction after eating the cooked and raw vegetable.

A case of occupational allergy in a platic industry

A case of occupational allergy in a platic industry

Occupational asthma and rhinitis caused by multiple herbal agents in a pharmacist

Herb agents have been widely used for centuries in the Orient and they have been cultivated throughout Asia. There have been a few cases of occupational allergy caused by herb materials. We report a case of occupational asthma and rhinitis caused by six herb materials in a pharmacist working at a pharmacy. We sought the role of immediate hypersensitivity in herbal agent-induced asthma in a pharmacist. The patient had strong positive responses on skin prick test to extracts of six herb materials: Chunkung (Cnidii rhizoma), Banha (Pinellia ternata), Sanyak (Dioscorea radix), Kangwhal (Ostericum koreanum), Danggui (Angelica radix), and Kunkang (Zingiberis rhizoma). Bronchoprovocation tests showed an early asthmatic response to Danggui extract. Serum specific IgE antibodies to Chunkung, Banha, and Sanyak were detected by ELISA with no specific IgE bindings to Kangwhal, Danggui, and Kunkang extracts. Twelve percent sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) and IgE immunoblotting revealed one IgE binding component (60 kD) within Chunkung extract, two (10, 25 kD) in Banha, and four (33, 34, 65, 98 kD) in Sanyak. Basophil histamine release test revealed that Danggui extract could release a greater amount of histamine from basophils in the patient than in a healthy control. Chunkung, Banha, and Sanyak may induce IgE-mediated bronchoconstriction in an exposed worker, and Danggui can cause bronchoconstriction by direct histamine-releasing effect from mast cells in a sensitized patient.

Occupational asthma caused by two herb materials, Dioscorea batatas and Pinellia ternata

There have been very few cases of occupational allergies caused by herb materials. In this paper, we report a case of occupational asthma and rhinitis caused by two herb materials, Dioscorea batatas and Pinellia ternata, which are known as Sanyak and Banha respectively. The patient had strong positive responses to grass pollens and cat fur, as well as to Sanyak and Banha extracts on skin-prick tests. Bronchoprovocation tests showed a dual asthmatic response to Sanyak whereas only an early asthmatic response to Banha. Serum specific IgE and IgG4 antibodies to Sanyak were detected by enzyme-linked immunosorbent assay (ELISA) but there was no specific IgE antibody binding to Banha. In order to further characterize the allergenic component of these extracts, sodium dodecyl sulphate-polyacrylamide gel electrophoresis (SDS-PAGE) and electroblotting studies were also performed. Three IgE binding components (29,000, 57,000, 63,000 Da) were detected within the Sanyak extracts, but no IgE-binding component was noted within the Banha extracts. It is suggested that Sanyak can induce IgE-mediated bronchoconstriction in an exposed worker. Further studies are needed to investigate the pathogenetic mechanism triggered by Banha.