title: Complementarity between microarray and immunoblot for the comparative evaluation of IgE repertoire of French and Italian cypress pollen allergic patients.
abstract: Cypress pollen represents the primary cause of respiratory allergies in Mediterranean areas. Patients allergic to Cupressus sempervirens pollen (Cups) (CPA) can be discriminated on the basis of the immunoglobulin E (IgE) binding to a basic 14 kDa protein (BP14) or to high-molecular-weight (HMW) glycoproteins only. Specific IgE repertoires of two differentially exposed CPA cohorts, French and Italian, were investigated using an IgE microarray system (some known major allergens from several allergenic sources) and individual IgE immunoblotting (IB) of whole Cups pollen extract separated by SDS-PAGE (all allergens from one allergenic source: cypress pollen). The prevalence of sensitization to BP14 was higher in French (37 %) than in Italian patients (17 %) and major differences were observed in IgE reactivities to lipid transfer proteins (LTPs). Thirty percent of the Italian CPA (4 % in the French group) had specific IgE against the Parietaria pollen LTP, independently of IB subgroups. Regarding peach LTP sensitization, all Pru p 3+ Italian CPA (10 %) were in the HMW+ subgroup, while Pru p 3+ French CPA (20 %) were all included in the BP14+ subgroup. BP14 sensitization is likely a marker of Cups exposure and is, in French CPA, significantly correlated to Pru p 3 sensitization. The IgE immunoblot and microarray are complementary tools that highlight differences in the subtle sensitization profile between groups of patients in comparative studies.
authors.affiliation: Armand Trousseau Hospital, Biochemistry and Molecular Biology D epartment, Allergy & Environment Group, Paris, France.
authors.forename: Y
authors.initials: Y
authors.lastname: Shahali
authors.affiliation: Bichat-Claude Bernard Hospital, Auto-immunity & Hypersensitivity D epartment, Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Nicaise
authors.affiliation: Institute of Chemical Technology, Department of Biochemistry and Microbiology, Prague, Czech Republic.
authors.forename: A
authors.initials: A
authors.lastname: Brázdová
authors.affiliation: North Hospital, Pneumo-Allergology D epartment, Marseille Cedex 20, France.
authors.forename: D
authors.initials: D
authors.lastname: Charpin
authors.affiliation: IDI-IRCCS, Experimental Allergology D epartment, Rome, Italy.
authors.forename: E
authors.initials: E
authors.lastname: Scala
authors.affiliation: CAAM, Latina, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Mari
authors.affiliation: Armand Trousseau Hospital, Biochemistry and Molecular Biology D epartment, Allergy & Environment Group, Paris, France.
authors.forename: J P
authors.initials: JP
authors.lastname: Sutra
authors.affiliation: Bichat-Claude Bernard Hospital, Auto-immunity & Hypersensitivity D epartment, Paris, France.
authors.forename: S
authors.initials: S
authors.lastname: Chollet-Martin
authors.affiliation: Armand Trousseau Hospital, Biochemistry and Molecular Biology D epartment, Allergy & Environment Group, Paris, France.
authors.forename: H
authors.initials: H
authors.lastname: Sénéchal
authors.affiliation: Armand Trousseau Hospital, Biochemistry and Molecular Biology D epartment, Allergy & Environment Group, Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Poncet
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000485:Allergens / Q000276:immunology*; D002352:Carrier Proteins / Q000276:immunology; D002648:Child; D015331:Cohort Studies; D029781:Cupressus / Q000737:chemistry*; D005260:Female; D005602:France; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology / Q000276:immunology*; D007114:Immunization; D015151:Immunoblotting / Q000379:methods*; D007073:Immunoglobulin E / Q000276:immunology*; D007558:Italy / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D020411:Oligonucleotide Array Sequence Analysis / Q000379:methods*; D010940:Plant Proteins / Q000276:immunology; D011058:Pollen / Q000276:immunology*; D015995:Prevalence; D055815:Young Adult
chemical_list: D000485:Allergens; D002352:Carrier Proteins; D010940:Plant Proteins; C030363:lipid transfer protein; D007073:Immunoglobulin E