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Circadian Variations of Prostaglandin in Sleep Apnea

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: NCT01096433
Recruitment Status : Completed
First Posted : March 31, 2010
Last Update Posted : January 26, 2012
Information provided by (Responsible Party):
Yuichi Chihara, Kyoto University

Brief Summary:
The purpose of this study is to evaluate the associations of circadian variations, sleep architecture, hypertension and prostanoids in the patients with sleep apnea. In addition, the patients introduced to continuous positive airway pressure(CPAP) treatment, the effects of CPAP are also evaluated.

Condition or disease Intervention/treatment Phase
Sleep Apnea Continuous Positive Airway Pressure Prostaglandins Circadian Variations Device: CPAP treatment Not Applicable

Detailed Description:
Obstructive sleep apnea (OSA) is characterized by repetitive episodes of upper airway obstruction during sleep that provoke frequents arousals, sleep fragmentation, oxygen desaturation, and excessive daytime sleepiness. OSA may contribute to the development of systemic hypertension, cardiovascular disease. Many studies has reported a crucial role for the prostaglandin D system in sleep regulation. In addition, it has been described urinary or blood levels of prostaglandins was higher in the patients with hypertension, diabetes mellitus, and these values were associated with the severity of coronary artery disease. However, the relation between alterations of prostaglandin D system and sleep architecture, sleepiness, and clinical outcomes such as hypertension, arteriosclerosis in the patients with OSA are not known. Additionally, after CPAP treatment, we will investigate the association between change of prostaglandin system and sleep architecture, sleepiness, clinical outcomes.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 64 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Association of Circadian Variations,Sleep Architecture, Hypertension, and Prostaglandin in Sleep Apnea
Study Start Date : May 2010
Actual Primary Completion Date : October 2011
Actual Study Completion Date : January 2012

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Sleep Apnea

Arm Intervention/treatment
Experimental: CPAP
The subjects introduced with CPAP treatment
Device: CPAP treatment
maintains upper airway patency and minimizes the obstructive events
Other Name: REMstar (Respironics), Auto Set(Resmed), Goodnight (Tyco Healthcare)

Primary Outcome Measures :
  1. Prostaglandins in the urine and blood [ Time Frame: baseline, and 2days, 3 months after CPAP ]

Secondary Outcome Measures :
  1. polysomnography measurements [ Time Frame: baseline, and 2days, 3 months after CPAP ]
  2. sleepiness and health-related quality of life [ Time Frame: baseline, and 2days, 3 months after CPAP ]
  3. Clinical measurements (blood pressure, heart rate, sympathetic activity etc) [ Time Frame: baseline, and 2days, 3 months after CPAP ]
  4. serum and urinary biomarker (inflammation, oxidative stress etc.) [ Time Frame: baseline, and 2days, 3 months after CPAP ]
  5. endothelial function [ Time Frame: baseline, and 2days, 3 months after CPAP ]

Information from the National Library of Medicine

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Ages Eligible for Study:   20 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Subjects on admission for sleep study under the Respiratory Care and Sleep Control Medicine, Kyoto University Hospital.
  • Subjects diagnosed with OSA (apnea hypopnea index >=5/hour) by overnight polysomnography.

Exclusion Criteria:

  • Subjects treating for acute infections or malignancy.
  • Subjects with severe cardiovascular disease, diabetes,and renal failure.
  • Subjects taking nonsteroidal anti-inflammatory drugs, steroids or immunosuppressants.

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): NCT01096433

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Kyoto University Graduate School of Medicine
Kyoto, Japan
Sponsors and Collaborators
Kyoto University
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Principal Investigator: Kazuo Chin, MD,PhD Kyoto University, Graduate School of Medicine
Principal Investigator: Yuichi Chihara, MD Kyoto University
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Yuichi Chihara, Medical doctor, Kyoto University Identifier: NCT01096433    
Other Study ID Numbers: C-411
First Posted: March 31, 2010    Key Record Dates
Last Update Posted: January 26, 2012
Last Verified: January 2012
Keywords provided by Yuichi Chihara, Kyoto University:
Sleep apnea
Circadian variations
Additional relevant MeSH terms:
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Sleep Apnea Syndromes
Respiration Disorders
Respiratory Tract Diseases
Signs and Symptoms, Respiratory
Signs and Symptoms
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Nervous System Diseases