pyrethrin/hypersensitivity

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Allergic contact dermatitis from pyrethrum (Chrysanthemum spp.). The roles of pyrethrosin, a sesquiterpene lactone, and of pyrethrin II.

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Pyrethrum allergic contact dermatitis in humans--real?, common?, or not documented? An evidence-based approach.

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Pyrethrum has been reported to produce allergic contact dermatitis in humans. Moreover, it has been speculated that cross reactions occur in ragweed-sensitized people. This review presents the botany, contemporary chemistry, and case reports of alleged allergic contact dermatitis. Our interpretation

Human exposure to insecticide products containing pyrethrins and piperonyl butoxide (2001-2003).

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Pyrethrum, used as an insecticide for centuries, is derived from dried and ground flowers of Chrysanthemum cinerariaefolium. Its current major use is in insecticide products to the control insects in the home and food handling establishments. We investigated human incidents reported through the

Fatality associated with inhalation of a pyrethrin shampoo.

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A fatality associated with the inhalational exposure to a pyrethrin insecticide is described. Death was attributed to sudden irreversible bronchospasm. While less severe allergic reactions have been reported, this is the first death associated with pyrethrin inhalation.

Chrysanthemum allergy. Pt. II: Experimental studies on the causative agents.

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Experimental studies on allergic contact dermatitis due to Chrysanthemum indicum 1. (Chrysanthemum x-morifolium) (chrysanthemum of the florists) have indicated the following results: 1. In 5 patients with allergic contact dermatitis from chrysanthemum oil of turpentine and its sensitizing compounds

Suicide after inhaling a pyrethrins containing insecticide spray.

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Pesticide self-poisoning is rare in developed countries. We report a suicide case after inhalation of a pyrethrins containing insecticide spray. The patient presented at the emergency department with respiratory failure. Despite mechanical ventilation, he developed severe pulmonary inflammation with

[Pyrethrin and pyrethroid (permethrin) in the treatment of scabies and pediculosis].

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The history and development of pyrethrum, the natural pyrethrins and synthetic pyrethroids and their insecticidal properties, chemical structure and toxic and allergic side-effects are reported. Permethrin is stressed as a photostable insecticide that is very effective against a large variety of

Contact hypersensitivity to sesquiterpene lactones in Chyrsanthemum dermatitis.

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In six persons with contact allergy to chrysanthemum of florists, patch tests were performed with 25 sequiterpene lactones. Positive responses were observed to 15 lactones. The most frequently encountered positive responses were to alantolactone (positive in all cases) and to arbusculin A,

Poisoning due to pyrethrins.

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The pyrethrins have a long and fascinating history. They were derived from dried chrysanthemum flower heads that were found to have pesticidal activity centuries ago. They comprise a complex mixture of six main chemicals. Commercial formulations usually contain piperonyl butoxide, which inhibits

Management of acute childhood poisonings caused by selected insecticides and herbicides.

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Most childhood exposures to insecticides and herbicides do not result in poisonings. Decontamination and observation are usually adequate treatments. The most frequent exposures involve carbamate and organophosphate insecticides. These compounds inhibit acetylcholinesterase, resulting in cholinergic

Pyrethroids, nerve poisons: how their risks to human health should be assessed.

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The extensive worldwide efforts of structural modification of natural pyrethrins for better performances have resulted in successful development of a wide variety of synthetic pyrethroids with tremendously high efficacy, knock-down activity or vapor action, and/or with acceptable environmental

Efficacy and safety of selamectin against fleas and heartworms in dogs and cats presented as veterinary patients in North America.

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A series of randomized, controlled, masked field studies was conducted to assess the efficacy and safety of selamectin in the treatment of flea infestations on dogs and cats, and in the prevention of heartworm infection in dogs. In addition, observations were made on the beneficial effect of

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