Effects of artificial exposure of Japanese cedar pollen on expression of histamine H1 receptor mRNA in the nasal mucosa of patients with pollinosis

Effects of artificial exposure of Japanese cedar pollen on expression of histamine H1 receptor mRNA in the nasal mucosa of patients with pollinosis - Effects of artificial exposure of Japanese cedar pollen on expression of histamine H1 receptor mRNA in the nasal mucosa of patients with pollinosis

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000007157

Enrollment

Registered

2012-03-01

Start date

2012-06-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pollinosis

Interventions

Artificial exposure of Japanese cedar pollen

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Adult subjects have a history of allergic rhinitis symptoms such as sneezing, nasal discharge and nasal obstruction during the pollen season

Exclusion criteria

Exclusion criteria: Patients who was excluded by investigators

Design outcomes

Primary

Measure	Time frame
The expression of histamine H1 receptor and allergy-related cytokine mRNA in the nasal mucosa	—

Secondary

Measure	Time frame
The allergic rhinitis symptoms including sneezing, nasal discharge and nasal obstruction	—

Countries

Japan

Contacts

Public ContactYoshiaki Kitamura

University of Tokushima School of Medicine Department of Otolaryngology

ykitamura@tokushima-u.ac.jp088-633-7169

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026