Basophil histamine release activity and disease severity in chronic idiopathic urticaria

Rosalyn Baker, Kavitha Vasagar, Nkiruka Ohameje, Laura Gober, Suephy C. Chen, Patricia M. Sterba, Sarbjit S. Saini

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Background: Altered basophil degranulation phenotypes are found in patients with chronic idiopathic urticaria (CIU). Objective: To evaluate CIU disease severity in relation to basophil histamine release (HR) characteristics. Methods: Patients with CIU were recruited from allergy and dermatology clinics. Patients with recent use of systemic corticosteroids or immunosuppressants were excluded. Patients completed disease severity surveys and had blood basophils isolated and stimulated for HR using polyclonal goat anti-human IgE and N-formyl-met-leu-phe. The HR was measured using automated fluorometry. Multivariate linear regression analyses were used to investigate relationships between HR data and CIU disease measures. Results: Fifty patients completed surveys, of which 34 were further categorized into 2 subgroups based on basophil HR response to anti-IgE stimulation: responders (≥10% HR) and nonresponders (<10% HR). Responders and nonresponders reported similar use of oral corticosteroids, work absences, and quality-of-life impairment but differed in their patterns of medications used for CIU. Basophil responders had a trend of higher use of the emergency department for CIU management. Multivariate regression revealed that patients with the basophil responder phenotype experienced significantly higher current itch scores (P = .02) compared with nonresponders. Conclusions: Quality-of-life impairment is similar in CIU basophil subsets. Patients with CIU with a basophil responder phenotype report longer disease duration, a higher frequency of emergency department use, and significantly higher itch severity.

Original languageEnglish (US)
Pages (from-to)244-249
Number of pages6
JournalAnnals of Allergy, Asthma and Immunology
Issue number3
StatePublished - Mar 2008

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology
  • Pulmonary and Respiratory Medicine


Dive into the research topics of 'Basophil histamine release activity and disease severity in chronic idiopathic urticaria'. Together they form a unique fingerprint.

Cite this