PM2.5 Exposure, Obesity, and Cardiovascular Health
Investigating Interactions Between PM2.5 Exposure, Obesity, Cardiovascular Health and Dietary Antioxidant in Subjects With Obesity
Obesity and exposure to fine particulate matter (particles of aerodynamic diameter less than 2.5 µm, PM2.5) air pollution are established risk factors for cardiovascular (CV) morbidity and mortality. This proposed pilot project seeks to assess interactions between PM2.5 exposure, obesity, CV health, and dietary antioxidant in subjects with obesity.
Studieöversikt
Status
Betingelser
Intervention / Behandling
Detaljerad beskrivning
This proposed intervention study will investigate (1) whether the use of portable air filtration systems (PAFS), by lowering PM2.5 exposures, will improve CV risk factors in subjects with obesity; and (2) whether antioxidant levels will modify the association between PM2.5 exposure and blood pressure. Our project will help validate the benefits of novel strategies to employ PAFS. Positive results would represent a key step in forming the evidence base required to promote more wide-scale PAFS use; in the long term, given their low cost and burden, PAFS use could be up-scaled to help protect diverse populations.
Studietyp
Inskrivning (Beräknad)
Fas
- Inte tillämpbar
Kontakter och platser
Studieorter
-
-
Michigan
-
East Lansing, Michigan, Förenta staterna, 48824
- Rekrytering
- Michigan State University
-
Kontakt:
- Study coordinator
- Telefonnummer: 517-884-4068
- E-post: klaverza@msu.edu
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Beskrivning
Inclusion Criteria:
- ≥21 years old
- diagnosis of hypertension (BP ≥140/90 mm Hg)
- obesity (BMI>30)
Exclusion Criteria:
- any CV event (myocardial infarction, stroke, heart failure) in the past 3 months
- unstable CV condition (class 3-4 angina or heart failure) or any medical condition that would place the subject at risk from participation or jeopardize study integrity (per investigators)
- expected overnight travel outside their home during the 9-week study period
- unable to comprehend/sign informed consent
- lung disease requiring oxygen
- cancer receiving active treatment or chemotherapy
- CPAP use for sleep apnea
- CV medication change in the prior month
Studieplan
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Grundläggande vetenskap
- Tilldelning: Randomiserad
- Interventionsmodell: Crossover tilldelning
- Maskning: Dubbel
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Sham Comparator: Arm 1
Participants are exposed to unfiltered air (sham) via air filtration systems in the bedroom and main living space of each residence. |
Subjects were exposed to high-efficiency filtered air. |
|
Aktiv komparator: Arm 2
Participants were exposed to high-efficiency (HEPA) filtered air via air filtration systems in the bedroom and main living space of each residence. |
Subjects were exposed to high-efficiency filtered air. |
Vad mäter studien?
Primära resultatmått
Resultatmått |
Tidsram |
|---|---|
|
Brachial blood pressure
Tidsram: Daily for 28 days, between 8-10 AM, starting 24 hours after air filtration systems are placed
|
Daily for 28 days, between 8-10 AM, starting 24 hours after air filtration systems are placed
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
C-reactive protein
Tidsram: Day 1 and Day 28 of each 4-week intervention period.
|
Blood samples for inflammatory marker (high-sensitivity C-reactive protein) |
Day 1 and Day 28 of each 4-week intervention period.
|
|
Carotenoid
Tidsram: Day 1 and Day 28 of each 4-week intervention period.
|
non-invasive optical measurement of skin carotenoid levels |
Day 1 and Day 28 of each 4-week intervention period.
|
Samarbetspartners och utredare
Sponsor
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Beräknad)
Avslutad studie (Beräknad)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Andra studie-ID-nummer
- CH-MSU Alliance
Plan för individuella deltagardata (IPD)
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