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Related Experiment Videos

Patch test with ether extracts in salicaceae allergy.

M P S Sawhney1

  • 1Department of Dermatology and STD, Command Hospital (SC), Pune-411 040, India.

Indian Journal of Dermatology, Venereology and Leprology
|July 28, 2007
PubMed
Summary
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Airborne contact dermatitis can be triggered by Populus and Salix species. A study in Ladakh found over half of tested cases reacted to these plant extracts, highlighting potential allergens.

Area of Science:

  • Dermatology
  • Allergology
  • Botany

Background:

  • Airborne contact dermatitis (ACD) is an inflammatory skin condition.
  • Identifying specific plant allergens is crucial for managing ACD.
  • High-altitude environments may present unique allergenic exposures.

Purpose of the Study:

  • To investigate the prevalence of positive patch test reactions to Populus sp. and Salix sp. in patients with suspected ACD.
  • To identify specific plant species causing allergic reactions in a high-altitude region.

Main Methods:

  • Patch testing was performed on 23 patients with suspected ACD.
  • Ether extracts from flowers and leaves of Populus sp. and Salix sp. were used as test antigens.
  • The study was conducted in Ladakh at an altitude of 3445 meters.

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Main Results:

  • Overall positivity to the tested plant extracts was observed in 12 out of 23 cases (52.17%).
  • Populus sp. alone elicited a positive reaction in 7 cases (30.43%).
  • Salix sp. alone caused a positive reaction in 4 cases (17.39%), and both species reacted in 1 case (8.33%).

Conclusions:

  • Populus sp. and Salix sp. are significant causes of airborne contact dermatitis in the studied high-altitude population.
  • Patch testing with these plant extracts is valuable for diagnosing ACD in endemic areas.
  • Further research into high-altitude plant allergens is warranted.