Grass Pollen Allergens (Lolium perenne, Phleum pratense, Poa pratensis)

Grass pollen allergens from *Lolium perenne* (perennial ryegrass), *Phleum pratense* (timothy grass), and *Poa pratensis* (Kentucky bluegrass) are significant causes of IgE-mediated allergic reactions. These temperate grasses have similar allergenic profiles and contribute to seasonal allergic rhinitis and asthma. Major allergens include Group 1 and Group 5 proteins (e.g., Lol p 1, Lol p 5, Phl p 1, Phl p 5). There is extensive cross-reactivity among temperate grasses. Standardized extracts are used for diagnosis and allergen immunotherapy.

Other names

Lolium perenne pollenPhleum pratense pollenPoa pratensis pollenPerennial ryegrass pollenTimothy grass pollenKentucky bluegrass pollenGroup 1 grass allergensGroup 5 grass allergensLol p 1Lol p 5Phl p 1Phl p 2Phl p 5Phl p 6

Allergen immunotherapy induces tolerance by modulating the immune response to specific allergens. Antihistamines block histamine receptors, reducing allergy symptoms. Corticosteroids reduce inflammation.