AzTrials
AzTrials

Apnea, SleepNCT02886156

Effects of CPAP on Cognitive Function, Neurocognitive Architecture and Function in Patients With OSA: The SMOSAT Trial

A study testing CPAP and BSC in people with Apnea, Sleep, run by Shanghai Jiao Tong University Affiliated Sixth People's Hospital at 1 site in China.

Completed

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

Official record
Search all trials

Trial summary

Multiple clinical studies have indicated that obstructive sleep apnea (OSA), the most common chronic sleep disorder, may affect neurocognitive function, and that treatment for continuous positive airway pressure (CPAP) has some neurocognitive protective effects against the adverse effects of OSA. Read more about this study

Who is it for?
Ages 30 to 65 yearsHealthy volunteers can take part
Conditions the study is for
Apnea, Sleep
What is being tested?
CPAP and BSC
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
148 participants
Where
1 siteChina
Study dates
4 Apr 2017to 30 Dec 2021
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 30 to 65 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Informed consent
  • Age 30-65 years
  • Newly diagnosed OSA (full-night in-laboratory polysomnography [PSG] with AHI ≥ 15 events per hour)
  • Adherence to CPAP treatment
  • No participation in any other clinical trial in the past 3 months
  • Able to accomplish relevant tests and follow-up

Who cannot join

  • Severe systemic diseases (e.g., cardiac, hepatic, and renal failure)
  • Psychiatric conditions (e.g., depression, mania, schizophrenia)
  • Neurological diseases (e.g., head trauma, brain tumor, epilepsy, stroke, transient ischemic attack, coma)
  • Sleep disorders other than OSA (narcolepsy, insomnia, chronic sleep deprivation, rapid eye movement [REM] behavior disorder and restless legs syndrome, central sleep apnea or obesity hypoventilation syndrome)
  • Alcoholism, drug addiction, use of psychotropic drugs, sedatives, or narcotics
  • Prior therapy for OSA (i.e., CPAP, upper airway surgery, oral appliance)
Show all 16Show fewer
  • Minimum Mental State Examination (MMSE)< 24
  • Left-handed
  • MRI contraindications (e.g., claustrophobic or metal implantation)
  • Gastrointestinal surgery during the last year, except for appendicitis and hernia surgery
  • Pregnancy
  • Use of intestinal flora regulator (e.g., antibiotics or probiotics) in the previous 8 weeks
  • Medical treatment for cholecystitis, gallstones, gastrointestinal ulcers, urinary tract infection, acute pyelonephritis, or cystitis in the past 3 months
  • Infectious diseases, such as tuberculosis, acquired immune deficiency syndrome
  • Commercial drivers or people deemed to be at risk of driving -related accidents
  • Deemed by the researchers to be suitable for this trial

Trial locations and contacts

1 site in 1 country.

China1 site
  • Otolaryngological Institute of Shanghai Jiao Tong University

    Shanghai, Shanghai Municipality, 2002333

Other trials in China

About this study

Official title: Effects of Continuous Positive Airway Pressure on Cognitive Function, Neurocognitive Architecture and Function in Patients With Obstructive Sleep Apnea: The Shanghai Multicenter Obstructive Sleep Apnea Therapy Trial

Multiple clinical studies have indicated that obstructive sleep apnea (OSA), the most common chronic sleep disorder, may affect neurocognitive function, and that treatment for continuous positive airway pressure (CPAP) has some neurocognitive protective effects against the adverse effects of OSA. However, the effects of CPAP treatment on neurocognitive architecture and function remain unclear. Therefore, this multicenter trial was designed to investigate whether and when neurocognitive architecture and function in patients with OSA can be improved by CPAP treatment, and to explore the role of gut microbiota in improving neurocognitive function during treatment.This study will be a multicenter, randomized, controlled trial with allocation concealment and assessor blinding. A total of 148 eligible patients with severe OSA will be enrolled from five sleep centers, and randomized to receive CPAP with best supportive care (BSC) intervention or BSC intervention alone. Cognitive function, structure and function of brain regions, gut microbiota, metabolites, biochemical variables, electrocardiography, echocardiography, pulmonary function, and arterial stiffness will be assessed at baseline before randomization and at 3, 6, and 12 months. In addition, the investigators will enroll 74 healthy controls and assess all of the aforementioned variables at baseline.

Read the detailed description

Background Multiple clinical studies have indicated that obstructive sleep apnea (OSA), the most common chronic sleep disorder, may affect neurocognitive function, and that treatment for continuous positive airway pressure (CPAP) has some neurocognitive protective effects against the adverse effects of OSA. However, the effects of CPAP treatment on neurocognitive architecture and function remain unclear. Therefore, this multicenter trial was designed to investigate whether and when neurocognitive architecture and function in patients with OSA can be improved by CPAP treatment, and to explore the role of gut microbiota in improving neurocognitive function during treatment.

Methods/Design This study will be a multicenter, randomized, controlled trial with allocation concealment and assessor blinding. A total of 148 eligible patients with severe OSA will be enrolled from five sleep centers, and randomized to receive CPAP with best supportive care (BSC) intervention or BSC intervention alone. Cognitive function, structure and function of brain regions, gut microbiota, metabolites, biochemical variables, electrocardiography, echocardiography, pulmonary function, and arterial stiffness will be assessed at baseline before randomization and at 3, 6, and 12 months. In addition, the investigators will enroll 74 healthy controls and assess all of the aforementioned variables at baseline.

Ethics and Dissemination Ethics approval was given by the Medical Ethics Committee of Shanghai Jiao Tong University Affiliated Sixth People's Hospital (approval number 2015-79). The findings from this study will be disseminated in peer-reviewed journals and at conferences.

Conditions
Apnea, Sleep
Being tested
CPAP, BSC
Keywords
OSA, CPAP, cognitive function, gut microbiota, metabolomics
Medical subject headings
Sleep Apnea Syndromes

What participants receive

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

  • CPAPDevice

    CPAP plus BSC group Participants in the CPAP plus BSC group will receive CPAP treatment plus the aforementioned BSC intervention. CPAP treatment (LOTUS AUTO; Curative Medical Technology Inc., Beijing, China) will be initiated using standard clinical practice at each center. Participants in both groups will be asked to continue their usual medical care during the trial.

  • BSCDietary supplement

    BSC only group Participants in the BSC only group will receive advice regarding lifestyle modification, sleep hygiene, naps, exercise, caffeine, and diet, and avoiding alcohol consumption, but no specific weight loss program, diet, or salt restriction will be suggested.

Study groups in NCT02886156
Study groupRoleWhat they receive
CPAP plus BSCExperimentalParticipants in the CPAP plus BSC group will receive CPAP treatment plus the aforementioned BSC intervention. CPAP treatment (LOTUS AUTO; Curative Medical Technology Inc., Beijing, China) will be initiated using standard clinical practice at each center.
Receives: Device: CPAP; Dietary Supplement: BSC
BSC interventionActive comparatorParticipants in the BSC only group will receive advice regarding lifestyle modification, sleep hygiene, naps, exercise, caffeine, and diet, and avoiding alcohol consumption, but no specific weight loss program, diet, or salt restriction will be suggested.
Receives: Dietary Supplement: BSC

What is being measured

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

  1. Changes from baseline neurocognitive function in participants at 3 month,6 month,1 year follow-up as measured by montreal cognitive assessment-score range 0-30

    Assessment of neurocognitive function by montreal cognitive assessment-score range 0-30

    Measured: baseline,month 3, month 6 and year 1

Secondary outcomes (11)
  1. Changes from baseline daytime sleepiness and sleep variables in participants at 3 month, 6 month and 1 year follow-up as measured by polysomnography (PSG)

    Assessment of daytime sleepiness and sleep variables by PSG

    Measured: baseline,month 3, month 6 and year 1

  2. Changes from baseline neurocognitive function in participants at 3 month, 6 month and 1 year follow-up as measured by central auditory processing testing

    Assessment of neurocognitive function by central auditory processing testing

    Measured: baseline,month 3, month 6 and year 1

  3. Changes from baseline neurocognitive function in participants at 3 month, 6 month and 1 year follow-up as measured by 256-channel high-density electroencephalography (EEG) recordings

    Assessment of neurocognitive function by 256-channel high-density electroencephalography (EEG) recordings

    Measured: baseline,month 3, month 6 and year 1

  4. Changes from baseline gut microbiomes in stool specimens in participants at 3 month, 6 month and 1 year follow-up as measured through metagenomic analysis

    The bacterial genomic DNA was extracted from tool of participants,V1-V3 hypervariable regions of 16S rRNA were amplified by PCR from DNA using barcoded fusion primers,after the PCR products were extracted and quantified, they were pooled in equimolar concentrations and were sequenced using a 454 Life Sciences Genome Sequencer FLX system

    Measured: baseline,month 3, month 6 and year 1

  5. Changes from baseline metabolomics profiling in participants at 3 month, 6 month and 1 year follow-up as measured by metabolomics approach

    Metabolomics profiling will be detected by a combination of ultra-performance liquid chromatography coupled with quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) and gas chromatography coupled with time-of-flight mass spectrometry (GC-TOF-MS)

    Measured: baseline,month 3, month 6 and year 1

  6. Changes from baseline arterial stiffness (pulse wave velocity, ankle brachial index, toe-brachial) in participants at 3 month, 6 month and 1 year follow-up as measured by echocardiography

    Assessment of arterial stiffness

    Measured: baseline,month 3, month 6 and year 1

  7. Changes from baseline general heart function (left ventricular volume and ejection fraction)in participants at 3 month, 6 month and 1 year follow-up as measured by echocardiography

    Assessment of general heart function

    Measured: baseline,month 3, month 6 and year 1

  8. Changes from baseline body fat distribution in participants at 3 month, 6 month and 1 year follow-up

    Assessment of body fat distribution ( abdominal subcutaneous fat,abdominal visceral fat, intrahepatic lipid) by means of magnetic resonance imaging

    Measured: baseline,month 3, month 6 and year 1

  9. Changes from baseline neurocognitive function in participants at 3 month, 6 month and 1 year follow-up as measured by the neuropsychological tests.

    The neuropsychological tests includes mental arithmetic,memory scanning, movement perception,switching attention,space location memory span,attention allocation choice reaction time curve fit

    Measured: baseline,month 3, month 6 and year 1

  10. Changes from baseline Optic nerve fiber layer thickness in participants at 3 month, 6 month and 1 year follow-up as measured by optical coherence tomography

    Assessment of Optic nerve fiber layer thickness by optical coherence tomography

    Measured: baseline,month 3, month 6 and year 1

  11. Changes from baseline neurocognitive function in participants at 3 month,6 month,1 year follow-up as measured by minimum mental state examination-score range 0-30 and functional magnetic resonance imaging

    Assessment of neurocognitive function by minimum mental state examination-score range 0-30 and functional magnetic resonance imaging

    Measured: baseline,month 3, month 6 and year 1

Timeline

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

  1. First posted1 Sep 2016 (estimated)
  2. Study start4 Apr 2017
  3. Primary completion30 Dec 2021
  4. Study completion30 Dec 2021

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
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
148 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02886156
Sponsor's protocol ID
6thShanghaiJiaotongU2
Status last verified
Feb 2022
First submitted
3 Aug 2016
Last updated
2 Mar 2022
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: Department of Epidemiology, School of Public Health, Shanghai Jiao Tong University

Publications

  • Henderson LA, Fatouleh RH, Lundblad LC, McKenzie DK, Macefield VG. Effects of 12 Months Continuous Positive Airway Pressure on Sympathetic Activity Related Brainstem Function and Structure in Obstructive Sleep Apnea. Front Neurosci. 2016 Mar 10;10:90. doi: 10.3389/fnins.2016.00090. eCollection 2016.

    PubMed 27013952
  • Dalmases M, Sole-Padulles C, Torres M, Embid C, Nunez MD, Martinez-Garcia MA, Farre R, Bargallo N, Bartres-Faz D, Montserrat JM. Effect of CPAP on Cognition, Brain Function, and Structure Among Elderly Patients With OSA: A Randomized Pilot Study. Chest. 2015 Nov;148(5):1214-1223. doi: 10.1378/chest.15-0171.

    PubMed 26065720
  • Rosenzweig I, Glasser M, Crum WR, Kempton MJ, Milosevic M, McMillan A, Leschziner GD, Kumari V, Goadsby P, Simonds AK, Williams SC, Morrell MJ. Changes in Neurocognitive Architecture in Patients with Obstructive Sleep Apnea Treated with Continuous Positive Airway Pressure. EBioMedicine. 2016 May;7:221-9. doi: 10.1016/j.ebiom.2016.03.020. Epub 2016 Mar 25.

    PubMed 27322475
  • Xu H, Wang H, Guan J, Yi H, Qian Y, Zou J, Xia Y, Fu Y, Li X, Jiao X, Huang H, Dong P, Yu Z, Yang J, Xiang M, Li J, Chen Y, Wang P, Sun Y, Li Y, Zheng X, Jia W, Yin S. Effects of continuous positive airway pressure on neurocognitive architecture and function in patients with obstructive sleep apnoea: study protocol for a multicentre randomised controlled trial. BMJ Open. 2017 May 25;7(5):e014932. doi: 10.1136/bmjopen-2016-014932.

    PubMed 28550021
  • Xu H, Liu Y, Li C, Li X, Shen L, Wang H, Liu F, Zou J, Xia Y, Huang W, Liu Y, Gao Z, Fu Y, Wang F, Huang S, Song Z, Song F, Gao Y, Peng Y, Zou J, Zhu H, Liu S, Li L, Zhu X, Xiong Y, Hu Y, Yang J, Li Y, Gao F, Guo Q, Huang H, Zhang W, Li J, Chen Y, Dong P, Yang J, Lv J, Wang P, Sun Y, Qian B, Yaffe K, Guan J, Yi H, Leng Y, Yin S. Effects of Continuous Positive Airway Pressure on Neuroimaging Biomarkers and Cognition in Adult Obstructive Sleep Apnea: A Randomized Controlled Trial. Am J Respir Crit Care Med. 2025 Apr;211(4):628-636. doi: 10.1164/rccm.202406-1170OC.

    PubMed 39998447

Questions about this trial

What is this clinical trial studying?

A study testing CPAP and BSC in people with Apnea, Sleep, run by Shanghai Jiao Tong University Affiliated Sixth People's Hospital at 1 site in China.

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 6 inclusion and 16 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 2 Mar 2022. 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 China. 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?

Changes from baseline neurocognitive function in participants at 3 month,6 month,1 year follow-up as measured by montreal cognitive assessment-score range 0-30 (time frame: baseline,month 3, month 6 and year 1). 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 NCT02886156, which also lists 5 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 2 Mar 2022.

Free account

Keep searching with a free account

You’ve used your 3 free searches for this session. Log in or create a free AzTrials account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in