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Efficacy of Pediococcus acidilactoci K15 strain on allergic symptoms related to Japanese cedar pollinosis during the pollen dispersal season

Efficacy of Pediococcus acidilactoci K15 strain on allergic symptoms related to Japanese cedar pollinosis during the pollen dispersal season: A randomized double-blind, placebo-controlled trial

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCTs051190061
Enrollment
40
Registered
2019-10-16
Start date
2019-10-15
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

Heated K15 Pediococcus acidilactici

Sponsors

Yamamoto Masashi
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1.individuals aged from 12 to 64 who will give informed consent upon their will 2.individuals who had allergic symptoms such as sneezing, rhinorrhea, nasal obstruction and eye itching during Japanese cedar pollen dispersal season in the past two consecutive years 3.individuals who had shown positive IgE titer more than class II for Japanese cedar pollen in the past three years 4.individuals who can take test material every day and who live or work in Osaka Prefecture

Exclusion criteria

Exclusion criteria: 1.Individuals who show more than class 5 titer of IgE for house dust mite or who show more than class 5 titer of IgE for pets (dogs or cats) and keep corresponding pets at home 2.Individuals who show more titer of IgE for house dust mite that that for Japanese cedar pollen 3.individuals receiving allergen (Japanese cedar pollen) immunotherapy or those who will receive allergen immunotherapy during the study 4.individuals with active diseases,thus,are judged to be inappropriate to join the study by their primary care physicians 5.individuals who are pregnant and brest-feeding and will have a plan of pregnancy during the study 6.individuals who habitually intake prebiotics or probiotics (more than 3 days in a week) 7.individuals who join other clinical studies

Design outcomes

Primary

MeasureTime frame
Total nasal symptom-medication score (Severity of allergic symptoms induced by artificial Japanese cedar dispersal evaluated by scoring system)

Secondary

MeasureTime frame
Severity of rhinitis, severity of conjunctivitis, medication score, severity of QOL disturbance, objective nasal findings, safety profile, blood test

Contacts

Public ContactKayoko Kawashima

Osaka Habikino Medical Center

k.kawashima@ra.opho.jp+81-72-957-2121

Outcome results

None listed

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