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

May 13, 2012
May 17, 2012
March 5, 2014
November 2011
July 2012   (Final data collection date for primary outcome measure)
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).

Same as current
Complete list of historical versions of study NCT01600625 on Archive Site
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Effects of Minocycline on Cytokine Levels in Severe Meibomian Gland Dysfunction
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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.
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Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Meibomian Gland Dysfunction
Drug: oral minocycline hydrochloride treatment
Orally received 50 mg minocycline (Minocin, SK chemical, Seoul, Korea) twice a day for 2 months treatment
Experimental: Minocycline treatment group
Intervention: Drug: oral minocycline hydrochloride treatment

*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
March 2013
July 2012   (Final data collection date for primary outcome measure)

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
Sexes Eligible for Study: All
40 Years to 80 Years   (Adult, Senior)
Contact information is only displayed when the study is recruiting subjects
Korea, Republic of
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Yonsei University
Yonsei University
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Yonsei University
March 2014

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP