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Exploratory study of the effect of proplis on Japanese cedar pollinosis (randomized, placebo-controlled, double-blind study using the envionmental challenge chamber)

Exploratory study of the effect of proplis on Japanese cedar pollinosis (randomized, placebo-controlled, double-blind study using the envionmental challenge chamber) - Exploratory study of the effect of proplis on Japanese cedar pollinosis

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000022472
Enrollment
50
Registered
2016-05-26
Start date
2016-08-01
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

Japanese cedar pollinosis

Interventions

Intake of propolis for 8 weeks Intake of placebo food for 8 week

Sponsors

Department of Otorhinolaryngology in Ciba University Graduate School
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1)Patients who have medical history of cedar pollinosis for more than 2 years. 2)Patients who do not have nasal symtoms induced by any allergen and requier any drug treatment out of Japanese cedar pollen scattering season. 3)Positive specific IgE to cedar pollen allergen(>=class2) 4)Patients who develop mild or moderate symptoms by a pollen exposure for 3 hours.

Exclusion criteria

Exclusion criteria: 1) Food allergy including intervention food 2) Patients who develop severe symptoms by a pollen exposure for 3 hours. 3) Patients with nasal disease that affects the evaluation of the study 4) Severe respiratory disease, heart disease, liver disease, kidney disease, diabetes, autoimmune disease 5) Pregnant women and those at risk of pregnancy 6) Women who are planning pregnancy 7) Lactating woman 8) Patients treated with anti-allergic drugs within 2 week of screening 7) The patients who the doctor judged inappropriate for the study

Design outcomes

Primary

MeasureTime frame
Total nasal symptoms induced in the environmental challernge chamber after intake of the intervention food for 8 weeks.

Countries

Japan

Contacts

Public ContactSyuji Yonekura

Chiba University Graduate School Department of Otorhinolaryngology

syonekura@faculty.chiba-u.jp043-222-7171

Outcome results

None listed

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