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Rhinitis, Allergic, SeasonalNCT00117832

Nasal Ocular Reflexes Contribute to Eye Symptoms

A study testing Azelastine nasal spray in people with Rhinitis, Allergic, Seasonal, run by University of Chicago at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Eye symptoms of tearing, redness and itching frequently occur in patients with allergic rhinitis or hayfever. The purpose of this trial is to study whether placing an allergen (a substance that causes allergies) directly in your nose can cause you to have eye symptoms as well as nasal symptoms. Read more about this study

Who is it for?
Ages 18 to 45 yearsHealthy volunteers can take part
Conditions the study is for
Rhinitis, Allergic, Seasonal
What is being tested?
Azelastine nasal spray
How many people
20 participants
Where
1 siteUnited States
Study dates
Mar 2005to Oct 2006
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 45 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • History of grass and/or ragweed allergic rhinitis.
  • Positive skin test to grass and/or ragweed antigen.
  • Positive response to screening nasal challenge.

Who cannot join

  • Physical signs or symptoms suggestive of renal, hepatic or cardiovascular disease.
  • Pregnant or lactating women.
  • Upper respiratory infection within 14 days of study start.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Chicago

    Chicago, Illinois, 60637

Other trials in United States

About this study

Official title: Nasal Ocular Reflexes Contribute to Eye Symptoms in Patients With Allergic Rhinitis

Eye symptoms of tearing, redness and itching frequently occur in patients with allergic rhinitis or hayfever. The purpose of this trial is to study whether placing an allergen (a substance that causes allergies) directly in your nose can cause you to have eye symptoms as well as nasal symptoms.

Read the detailed description

Symptoms of conjunctivitis (tearing, redness and itching) frequently occur in patients with allergic rhinitis. The pathophysiology underlying these symptoms remains to be elucidated. The symptoms probably arise via a combination of mechanisms including direct contact of natural pollen with the conjunctiva and reflex mechanisms originating in the nose.

Pollen exposure can result from direct hand transfer of pollen to the conjunctiva or, conceivably, from the forceful blowing of air, containing nasal secretions with antigen, up the nasolacrimal duct. The latter mechanism would be considered extremely unlikely because of the location of the nasolacrimal duct under the inferior turbinate (the duct's location is in an area with little pollen exposure) and the considerable force of air needed to cause reverse flow in the duct. The latter would also be true for topically applied intranasal drugs reaching the conjunctiva via the nasolacrimal duct, whereas the administration of medications to the conjunctiva frequently results in these medications reaching the nose via the nasolacrimal duct.

In support of direct contact of pollen as a source of ocular symptoms in patients with allergic rhinitis is the observation that pollen can be washed out of the conjunctiva on windy days, although the amount is 10 fold less than the amount of pollen recovered simultaneously from the nose. Additionally, beginning with Noon in the early 1900s, and subsequently shown by others, direct conjunctival challenges induce ocular symptoms. Thus, direct contact is a plausible explanation, but its relative contribution to eye symptoms in allergic rhinitis is unknown. Since topical intranasal steroids are known to reduce eye symptoms and the chance of them reaching the eye by systemic absorption or directly when administered intranasally are very slim, the investigators would postulate that direct allergen contact at the conjunctiva is a small contributor to the overall ocular symptom complex.

Reflex mechanisms within the nose have been shown to occur universally in response to nasal challenge with antigen. Nasal challenge with antigen induces a reflex in the contralateral nasal cavity, known as the nasonasal reflex. This reflex can also be initiated by nasal challenge with cold, dry air and histamine. The contralateral response to antigen, cold dry air and histamine is blocked by topical anticholinergic agents applied to the contralateral side, suggesting that the efferent limb is parasympathetically mediated. Histamine is only released on the side of challenge with antigen but oral H1 antihistamines reduce the contralateral response to unilateral nasal allergen challenge, suggesting that histamine contributes to the initiation of the reflex. The eye is richly innervated by parasympathetic nerves which enter the eye after running in conjunction with the parasympathetic input to the nasal cavity. The investigators, therefore, hypothesize that the conjunctiva will respond to nasal allergen in a manner similar to the contralateral nasal cavity.

Purpose: The investigators will study whether antigen-induced nasal reflexes cause eye symptoms. The investigators suspect that reflexes occur between the nose and the eye, and contribute substantially to eye symptoms in allergic patients during the allergy season. The investigators propose to demonstrate that nasal challenge with antigen leads to increased lacrimation.

Being tested
Azelastine nasal spray
Keywords
allergic rhinitis
Medical subject headings
Rhinitis, Allergic, Seasonal, Rhinitis, Allergic

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Azelastine nasal sprayDrug

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Amount of eye secretions collected on Schirmer strips following antigen challenge

Secondary outcomes (1)
  1. Amount of eye secretions collected on Schirmer strips following antigen challenge

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Jul 2005 (estimated)
  2. Study startMar 2005
  3. Primary completionMay 2006
  4. Study completionOct 2006

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Diagnosis
Allocation
Randomised
Intervention model
Crossover
Masking
None (open label)
Enrolment
20 participants
IDs, dates and publications
ClinicalTrials.gov ID
NCT00117832
Sponsor's protocol ID
13716A
Status last verified
Sep 2013
First submitted
30 Jun 2005
Last updated
5 Sep 2013
Results posted
No
Data monitoring committee
No

Publications

  • Philip G, Nayak AS, Berger WE, Leynadier F, Vrijens F, Dass SB, Reiss TF. The effect of montelukast on rhinitis symptoms in patients with asthma and seasonal allergic rhinitis. Curr Med Res Opin. 2004 Oct;20(10):1549-58. doi: 10.1185/030079904x3348.

    PubMed 15462688
  • Yanez A, Rodrigo GJ. Intranasal corticosteroids versus topical H1 receptor antagonists for the treatment of allergic rhinitis: a systematic review with meta-analysis. Ann Allergy Asthma Immunol. 2002 Nov;89(5):479-84. doi: 10.1016/S1081-1206(10)62085-6.

    PubMed 12452206
  • Gray RD, Haggart K, Lee DK, Cull S, Lipworth BJ. Effects of butterbur treatment in intermittent allergic rhinitis: a placebo-controlled evaluation. Ann Allergy Asthma Immunol. 2004 Jul;93(1):56-60. doi: 10.1016/S1081-1206(10)61447-0.

    PubMed 15281472
  • Hampel F Jr, Howland W 3rd, Van Bavel J, Ratner P. A randomized, double-blind, placebo-controlled study comparing the efficacy and safety of ebastine (20 mg and 10 mg) to loratadine 10 mg once daily in the treatment of seasonal allergic rhinitis. J Investig Allergol Clin Immunol. 2004;14(1):56-63.

    PubMed 15160443
  • Shahar E, Hassoun G, Pollack S. Effect of vitamin E supplementation on the regular treatment of seasonal allergic rhinitis. Ann Allergy Asthma Immunol. 2004 Jun;92(6):654-8. doi: 10.1016/S1081-1206(10)61432-9.

    PubMed 15237767
  • van Adelsberg J, Philip G, Pedinoff AJ, Meltzer EO, Ratner PH, Menten J, Reiss TF; Montelukast Fall Rhinitis Study Group. Montelukast improves symptoms of seasonal allergic rhinitis over a 4-week treatment period. Allergy. 2003 Dec;58(12):1268-76. doi: 10.1046/j.1398-9995.2003.00261.x.

    PubMed 14616102
  • Remberg P, Bjork L, Hedner T, Sterner O. Characteristics, clinical effect profile and tolerability of a nasal spray preparation of Artemisia abrotanum L. for allergic rhinitis. Phytomedicine. 2004 Jan;11(1):36-42. doi: 10.1078/0944-7113-00350.

    PubMed 14971719
  • Kirchhoff CH, Kremer B, Haaf-von Below S, Kyrein HJ, Mosges R. Effects of dimethindene maleate nasal spray on the quality of life in seasonal allergic rhinitis. Rhinology. 2003 Sep;41(3):159-66.

    PubMed 14579656
  • Lumry W, Hampel F, LaForce C, Kiechel F, el-Akkad T, Murray JJ. A comparison of once-daily triamcinolone acetonide aqueous and twice-daily beclomethasone dipropionate aqueous nasal sprays in the treatment of seasonal allergic rhinitis. Allergy Asthma Proc. 2003 May-Jun;24(3):203-10.

    PubMed 12866325
  • van Adelsberg J, Philip G, LaForce CF, Weinstein SF, Menten J, Malice MP, Reiss TF; Montelukast Spring Rhinitis Investigator Group. Randomized controlled trial evaluating the clinical benefit of montelukast for treating spring seasonal allergic rhinitis. Ann Allergy Asthma Immunol. 2003 Feb;90(2):214-22. doi: 10.1016/S1081-1206(10)62144-8.

    PubMed 12602669
  • Nayak AS, Philip G, Lu S, Malice MP, Reiss TF; Montelukast Fall Rhinitis Investigator Group. Efficacy and tolerability of montelukast alone or in combination with loratadine in seasonal allergic rhinitis: a multicenter, randomized, double-blind, placebo-controlled trial performed in the fall. Ann Allergy Asthma Immunol. 2002 Jun;88(6):592-600. doi: 10.1016/S1081-1206(10)61891-1.

    PubMed 12086367
  • Wilson AM, Orr LC, Coutie WJ, Sims EJ, Lipworth BJ. A comparison of once daily fexofenadine versus the combination of montelukast plus loratadine on domiciliary nasal peak flow and symptoms in seasonal allergic rhinitis. Clin Exp Allergy. 2002 Jan;32(1):126-32. doi: 10.1046/j.0022-0477.2001.01252.x.

    PubMed 12002729
  • Kilpelainen M, Terho EO, Helenius H, Koskenvuo M. Validation of a new questionnaire on asthma, allergic rhinitis, and conjunctivitis in young adults. Allergy. 2001 May;56(5):377-84. doi: 10.1034/j.1398-9995.2001.056005377.x.

    PubMed 11350300
  • Ratner PH, Lim JC, Georges GC. Comparison of once-daily ebastine 20 mg, ebastine 10 mg, loratadine 10 mg, and placebo in the treatment of seasonal allergic rhinitis. The Ebastine Study Group. J Allergy Clin Immunol. 2000 Jun;105(6 Pt 1):1101-7. doi: 10.1067/mai.2000.105525.

    PubMed 10856142
  • Van Cauwenberge P, Juniper EF. Comparison of the efficacy, safety and quality of life provided by fexofenadine hydrochloride 120 mg, loratadine 10 mg and placebo administered once daily for the treatment of seasonal allergic rhinitis. Clin Exp Allergy. 2000 Jun;30(6):891-9. doi: 10.1046/j.1365-2222.2000.00914.x.

    PubMed 10848909

Questions about this trial

What is this clinical trial studying?

A study testing Azelastine nasal spray in people with Rhinitis, Allergic, Seasonal, run by University of Chicago at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 5 Sep 2013. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Amount of eye secretions collected on Schirmer strips following antigen challenge. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00117832, which also lists 39 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Sep 2013.

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