title: Sublingual immunotherapy: a double-blind, placebo-controlled trial with Parietaria judaica extract standardized in mass units in patients with rhinoconjunctivitis, asthma, or both.
abstract: BACKGROUND
  New routes of administering immunotherapy in respiratory allergy are being studied as an alternative to conventional injective immunotherapy. We carried out a study to evaluate the clinical efficacy and effects of sublingual immunotherapy in patients with Parietaria judaica-induced respiratory allergy.
  
  
  METHODS
  A double-blind, placebo-controlled design was followed. Thirty patients with P. judaica rhinoconjunctivitis, mild asthma, or both were randomly chosen for sublingual immunotherapy (14 patients) or placebo treatment (16 patients). The patients underwent preseasonal rush induction treatment followed by coseasonal maintenance treatment during the Parietaria pollen season. Symptom and drug scores, as well as specific IgE and specific IgG4, were recorded.
  
  
  RESULTS
  Significantly lower symptom and drug scores were found (P=0.04), especially during the Parietaria pollination period, in the immunotherapy group. No significant difference in specific IgE and specific IgG4 was detected between the active and placebo groups; a statistically significant increase of specific IgE was detected in both groups (P=0.05). No patient undergoing active sublingual immunotherapy reported local or systemic side-effects.
  
  
  CONCLUSIONS
  Our data suggest that sublingual immunotherapy is both clinically effective and safe in treating patients with Parietaria-induced rhinoconjunctivitis and mild asthma.
authors.affiliation: School of Allergy and Clinical Immunology, University of Messina, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Purello-D'Ambrosio
authors.forename: S
authors.initials: S
authors.lastname: Gangemi
authors.forename: S
authors.initials: S
authors.lastname: Isola
authors.forename: N
authors.initials: N
authors.lastname: La Motta
authors.forename: P
authors.initials: P
authors.lastname: Puccinelli
authors.forename: S
authors.initials: S
authors.lastname: Parmiani
authors.forename: E
authors.initials: E
authors.lastname: Savi
authors.forename: L
authors.initials: L
authors.lastname: Ricciardi
mesh_terms: D000286:Administration, Sublingual; D000293:Adolescent; D000328:Adult; D000485:Allergens; D001249:Asthma / Q000150:complications / Q000276:immunology / Q000628:therapy*; D003231:Conjunctivitis / Q000150:complications / Q000276:immunology / Q000628:therapy*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000150:complications / Q000276:immunology / Q000628:therapy; D007073:Immunoglobulin E / Q000032:analysis; D007167:Immunotherapy; D008297:Male; D008875:Middle Aged; D010940:Plant Proteins / Q000627:therapeutic use*; D011058:Pollen / Q000276:immunology; D012220:Rhinitis / Q000150:complications / Q000276:immunology / Q000628:therapy*; D012621:Seasons
chemical_list: D000485:Allergens; C083860:Par j I protein, Parietaria judaica; D010940:Plant Proteins; D007073:Immunoglobulin E