Effects of Minocycline on Cytokine Levels in Severe Meibomian Gland Dysfunction

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. Identifier: NCT01600625
Recruitment Status : Completed
First Posted : May 17, 2012
Last Update Posted : March 5, 2014
Information provided by (Responsible Party):
Yonsei University

Brief Summary:
One of the important factors in obtaining successful outcomes when treating severe meibomian gland dysfunction (MGD) is to control the existing ocular and eyelid inflammation. Thus, in previous studies, topical and systemic antibiotics with anti-inflammatory function, such as topical azithromycin, systemic tetracycline, doxycycline and minocycline, have been used to treat severe MGD. In this study, minocycline which had the fewest side effects was used to evaluate the effect on cytokine levels in severe MGD. At study initiation, all patients completed an Ocular Surface Disease Index (OSDI) questionnaire and had an ocular surface, tear, and meibomian gland evaluation that consisted of fluorescein tear break-up time (TBUT), Schirmer test, corneal and conjunctival fluorescein staining, microscopic examination of lid margins and meibomian glands, and tear cytokine levels. All measurements except tear cytokine levels were conducted in the same manner before treatment, after 1 month, and after 2 months of treatment. Tear cytokine levels were evaluated before treatment and after 2 months of treatment. The aim of this research was to determine the concentration of inflammatory cytokines in the tears of patients with MGD and to compare the cytokine levels, corresponding clinical responses, and ocular symptoms before and after 2 months of treatment with oral minocycline.

Condition or disease Intervention/treatment Phase
Meibomian Gland Dysfunction Drug: oral minocycline hydrochloride treatment Not Applicable

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 46 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Study Start Date : November 2011
Actual Primary Completion Date : July 2012
Actual Study Completion Date : March 2013

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Tears

Arm Intervention/treatment
Experimental: Minocycline treatment group Drug: oral minocycline hydrochloride treatment
Orally received 50 mg minocycline (Minocin, SK chemical, Seoul, Korea) twice a day for 2 months treatment

Primary Outcome Measures :
  1. change of inflammatory tear cytokine levels [ Time Frame: before treatment and after 2 months of treatment ]

    Thirty microliters of phosphate-buffered saline will be injected into the inferior conjunctival sac using a micropipette. Approximately 20 μL tear fluid and buffer will be collected with a micropipette.

    Cytokines are measured using the BDTM Cytometric Bead Array (CBA) (BD Bioscience, San Jose, CA). The cytokines analyzed were interleukin (IL)-1β, IL-6, IL-7, IL-8, IL-12p70, IL-17α, interferon-γ (IFN-γ), tumor necrosis factor-α (TNF-α), and monocyte chemotactic protein-1 (MCP-1). Flow cytometry will be performed using the BDTM LSRII system (BD Bioscience, San Jose, CA).

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.

Ages Eligible for Study:   40 Years to 80 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • patients with stage 3 or 4 meibomian gland dysfunction
  • moderate or marked symptoms of ocular discomfort, itching, or photophobia with limitations of activities
  • moderate or severe meibomian gland dysfunction clinical signs
  • mild to moderate conjunctival and peripheral corneal staining or increased conjunctival and corneal staining, including central staining
  • increased signs of inflammation : moderate or severe conjunctival hyperemia, phlyctenulae

Exclusion Criteria:

  • history of previous ocular or intraocular surgery
  • evidence of acute or chronic infections or inflammation of the cornea and conjunctiva
  • ocular allergy
  • autoimmune disease
  • history of intolerance or hypersensitivity to any component of the study medications
  • use of topical ocular medications
  • wearing contact lenses during the study period
  • presence of current punctal occlusion
  • pregnancy
  • lactating women
  • children

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 identifier (NCT number): NCT01600625

Korea, Republic of
Severance Hospital
Seoul, Korea, Republic of, 120-752
Sponsors and Collaborators
Yonsei University

Publications of Results:
Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Yonsei University Identifier: NCT01600625     History of Changes
Other Study ID Numbers: 4-2011-0830
First Posted: May 17, 2012    Key Record Dates
Last Update Posted: March 5, 2014
Last Verified: March 2014

Keywords provided by Yonsei University:
meibomian gland dysfunction
inflammatory tear cytokine

Additional relevant MeSH terms:
Anti-Bacterial Agents
Anti-Infective Agents