We're building a better ClinicalTrials.gov. Check it out and tell us what you think!
ClinicalTrials.gov Menu

Effect of a Probiotic on Grass Pollen Allergic Rhinitis Subjects

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT01150253
Recruitment Status : Completed
First Posted : June 24, 2010
Last Update Posted : January 14, 2014
Information provided by (Responsible Party):

Brief Summary:
Various studies in animals and humans have shown a potential beneficial effect of probiotics consumption on allergy. However, few studies exist that document their efficacy for upper airways allergies such as allergic rhinitis. The objective of this study is to investigate the effect of short-term oral administration of a Lactobacillus paracasei on a nasal provocation test (NPT) with grass pollen, performed out of pollen season. Adult volunteers with allergic rhinitis are enrolled in a randomized, double-blind, placebo-controlled study, based on two 4-weeks cross-over periods of product consumption (probiotic-fermented milk versus placebo), separated by a washout period of 6-8 weeks. Objective and subjective clinical parameters of NPT as well as systemic and nasal immunological parameters are compared between the two treatment periods.

Condition or disease Intervention/treatment Phase
Allergic Rhinitis Dietary Supplement: L. paracasei fermented milk Not Applicable

Layout table for study information
Study Type : Interventional  (Clinical Trial)
Intervention Model: Crossover Assignment
Official Title: Double Blind Randomised Comparison of Two Preparations, One Enriched in Probiotics and One Without Probiotics (Placebo) in Grass Pollen Allergic Rhinitis Patients, Using a Nasal Provocation Test
Study Start Date : August 2006
Actual Primary Completion Date : March 2007
Actual Study Completion Date : March 2007

Arm Intervention/treatment
Experimental: probiotic fermented milk Dietary Supplement: L. paracasei fermented milk
Placebo Comparator: placebo Dietary Supplement: L. paracasei fermented milk

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Layout table for eligibility information
Ages Eligible for Study:   18 Years to 35 Years   (Adult)
Sexes Eligible for Study:   All

Inclusion Criteria:

  • age 18 to 35 years
  • history of allergic rhinitis to grass pollen confirmed by either a positive skin prick test (wheal diameter >3 mm) or specific IgE for grass pollen (>0.35 kU/L) as titrated by UniCAP 100 (Pharmacia Diagnostics, Uppsala, Sweden) and no history of perennial rhinitis
  • a nasal reaction threshold of 10'000 standardized quality units (SQs)/ml grass pollen or less at the screening phase

Exclusion Criteria:

  • any medical condition that could influence the study (pregnancy, viral or bacterial airway infection, active allergic rhinitis)
  • uncontrolled asthma (peak expiratory flow <20% of volunteer's best personal value)
  • treatment with antihistamine or antibiotic treatment less than two weeks before enrolment or during the trial

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01150253

Layout table for location information
Centre Hospitalier Universitaire Vaudois
Lausanne, Switzerland, 1011
Sponsors and Collaborators
Layout table for investigator information
Principal Investigator: François Spertini, Prof Centre Hospitalier Universitaire Vaudois
Publications of Results:
Layout table for additonal information
Responsible Party: Nestlé
ClinicalTrials.gov Identifier: NCT01150253    
Other Study ID Numbers: 06.09.NRC
First Posted: June 24, 2010    Key Record Dates
Last Update Posted: January 14, 2014
Last Verified: January 2014
Additional relevant MeSH terms:
Layout table for MeSH terms
Rhinitis, Allergic
Respiratory Tract Infections
Nose Diseases
Respiratory Tract Diseases
Otorhinolaryngologic Diseases
Respiratory Hypersensitivity
Hypersensitivity, Immediate
Immune System Diseases