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Testing of Innocuousness of Benzalkonium Chloride on the Eye Concerning Possible Growth of Langerhans Cells

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified December 2006 by University of Rostock.
Recruitment status was:  Recruiting
Merck Sharp & Dohme Corp.
Information provided by:
University of Rostock Identifier:
First received: December 21, 2006
Last updated: NA
Last verified: December 2006
History: No changes posted
The study analysis the influence of benzalkonium chloride on the density of antigen presenting Langerhans cells. This is achieved in a double blind randomized study using in-vivo confocal microscopy to identify and quantify Langerhans cells of the human cornea in its central and peripheral part. This study design is based on observations with raised Langerhans cell density after the application of benzalkonium chloride containing eye drops in glaucoma patients.

Condition Intervention Phase
Eye Diseases Drug: Benzalkonium chloride Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: Double-Blind
Primary Purpose: Treatment

Resource links provided by NLM:

Further study details as provided by University of Rostock:

Primary Outcome Measures:
  • Possible raised Langerhans cell density in the corneal epithelium

Estimated Enrollment: 20

Ages Eligible for Study:   18 Years to 80 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • healthy probands

Exclusion Criteria:

  • eye diseases
  • pregnancy and lactation period
  • drug dependency
  Contacts and Locations
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Please refer to this study by its identifier: NCT00414739

University of Rostock, Eye Department Recruiting
Rostock, Germany, 18057
Contact: Rudolf F. Guthoff, Prof. Dr.    +49/(0)381/4948501   
Principal Investigator: Andrey Zhivov, Dr. med.         
Sponsors and Collaborators
University of Rostock
Merck Sharp & Dohme Corp.
Study Chair: Rudolf F. Guthoff, Prof. Dr. University of Rostock, Eye Department
  More Information

Publications: Identifier: NCT00414739     History of Changes
Other Study ID Numbers: BAC-2006-1
Study First Received: December 21, 2006
Last Updated: December 21, 2006

Keywords provided by University of Rostock:
growth of dendritic cells

Additional relevant MeSH terms:
Eye Diseases
Benzalkonium Compounds
Anti-Infective Agents, Local
Anti-Infective Agents processed this record on June 22, 2017