Relationship between indoor, outdoor, and personal fine particle concentrations for individuals with COPD and predictors of indoor-outdoor ratio in Mexico city

Cortez‐Lugo, Marlene; Moreno-Macías, Hortensia; Holguin-Molina, F; Chow, Judith C.; Watson, John G.; Gutiérrez-Avedoy, V.J; Mandujano, Francisco; Hernández-Ávila, Mauricio; Romieu, Isabelle

doi:10.1038/sj.jes.7500557

Cited by 16 publications

(8 citation statements)

References 35 publications

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“…The subjects of this study spent the majority of their day indoors; this, domestic sources reported previously (pets, mold, cooking, aerosol use) likely played a very important role in personal exposure [ 32 ]. Smoking inside the home and the use of carpets (in the house) are also significant domestic sources of PM 2.5 [ 32 , 42 , 43 ]. In this study, despite the fact that some relatives of some of the participants reported smoking in the home, passive smoking was not a significant source in the model of personal exposure to PM 2.5 or in the model for a decrease in PEF.…”

Section: Resultsmentioning

confidence: 99%

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Effect of Personal Exposure to PM2.5 on Respiratory Health in a Mexican Panel of Patients with COPD

Cortez‐Lugo

Ramírez-Aguilar²,

Pérez‐Padilla

et al. 2015

IJERPH

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Background: Air pollution is a problem, especially in developing countries. We examined the association between personal exposure to particulate matter with an aerodynamic diameter less than 2.5 µm (PM2.5) on respiratory health in a group of adults with chronic obstructive pulmonary disease (COPD). Methods: All participants resided in Mexico City and during follow-up, personal exposure to PM2.5, respiratory symptoms, medications, and daily activity were registered daily. Peak expiratory flow (PEF) was measured twice daily, from February through December, 2000, in 29 adults with moderate, severe, and very severe COPD. PEF changes were estimated for each 10 µg/m3 increment of PM2.5, adjustment for severity of COPD, minimum temperature, and day of the sampling. Results: For a 10-µg/m3 increase in the daily average of a two-day personal exposure to PM2.5, there was a significant 33% increase in cough (95% CI, range, 5‒69%), and 23% in phlegm (95% CI, range, 2‒54%), a reduction of the PEF average in the morning of −1.4 L/min. (95% CI , range, −2.8 to −0.04), and at night of −3.0 L/min (95% CI, range, −5.7 to −0.3), respectively. Conclusions: Exposure to PM2.5 was associated with reductions in PEF and increased respiratory symptoms in adults with COPD. The PEF reduction was observed both at morning and at night.

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Section: Resultsmentioning

confidence: 99%

“…Details of personal monitoring equipment for PM 2.5 , quality control, and quality assurance procedures have been described previously [ 32 ].…”

Section: Methodsmentioning

confidence: 99%

Effect of Personal Exposure to PM2.5 on Respiratory Health in a Mexican Panel of Patients with COPD

Cortez‐Lugo

Ramírez-Aguilar²,

Pérez‐Padilla

et al. 2015

IJERPH

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“…Temperature was checked as a potential confounder. Pet ownership was also evaluated as a confounder in these models, since pet ownership can be a significant source of resuspended particles 37 . The analysis was limited to weekday measurements, since personal exposure measurements did not include weekends.…”

Section: Methodsmentioning

confidence: 99%

Personal exposures to traffic-related particle pollution among children with asthma in the South Bronx, NY

Spira-Cohen

Chen

Kendall

et al. 2009

J Expo Sci Environ Epidemiol

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Personal exposures to fine Particulate Matter air pollution (PM2.5), and to its traffic-related fraction, were investigated in a group of urban children with asthma. The relationships of personal and outdoor school-site measurements of PM2.5 and elemental carbon (EC) were characterized for a total of forty fifth-grade children. These students, from four South Bronx, NY schools, each carried air pollution monitoring equipment with them 24 hours per day for approximately one month. Daily EC concentrations were estimated using locally calibrated reflectance of the PM2.5 samples. Personal EC was more closely related to outdoor school-site EC (median subject-specific r = 0.64) than was personal PM with school-site PM2.5 (median subject specific r = 0.33). Regression models also showed a stronger, more robust association of school-site with personal measurements for EC than for PM2.5. High traffic pollution exposure was found to coincide with the weekday early morning rush hour, with higher personal exposures for subjects living closer to a highway (< 500 ft). A significant linear relationship of home distance from a highway with personal EC pollution exposure was also found (up to 1000 ft.). This supports the assumptions by previous epidemiological studies using distance from a highway as an index of traffic PM exposure. These results are also consistent with the assumption that traffic, and especially diesel vehicles, are a significant contributor to personal PM exposure levels of children living in urban areas such as the South Bronx, NY.

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“…Indoor pollution levels were positively associated with household and personal activities, such as cooking, smoking, use of a fireplace, stove, candles, incense or vacuum cleaners, and interior rebuilding or renovation (e.g., [132][133][134][135][136]), as well as with the number of occupants in the household [137,138]. Extremely high indoor concentrations of chemicals (naphthalene, p-dichlorobenzene) were associated with inappropriate use of insecticides and space deodorisers [55,116].…”

Section: Occupancy Natural Ventilation and Activity Patternsmentioning

confidence: 99%

Indoor Exposure to Selected Air Pollutants in the Home Environment: A Systematic Review

Vardoulakis

Giagloglou

Steinle

et al. 2020

IJERPH

281

129

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(1) Background: There is increasing awareness that the quality of the indoor environment affects our health and well-being. Indoor air quality (IAQ) in particular has an impact on multiple health outcomes, including respiratory and cardiovascular illness, allergic symptoms, cancers, and premature mortality. (2) Methods: We carried out a global systematic literature review on indoor exposure to selected air pollutants associated with adverse health effects, and related household characteristics, seasonal influences and occupancy patterns. We screened records from six bibliographic databases: ABI/INFORM, Environment Abstracts, Pollution Abstracts, PubMed, ProQuest Biological and Health Professional, and Scopus. (3) Results: Information on indoor exposure levels and determinants, emission sources, and associated health effects was extracted from 141 studies from 29 countries. The most-studied pollutants were particulate matter (PM2.5 and PM10); nitrogen dioxide (NO2); volatile organic compounds (VOCs) including benzene, toluene, xylenes and formaldehyde; and polycyclic aromatic hydrocarbons (PAHs) including naphthalene. Identified indoor PM2.5 sources include smoking, cooking, heating, use of incense, candles, and insecticides, while cleaning, housework, presence of pets and movement of people were the main sources of coarse particles. Outdoor air is a major PM2.5 source in rooms with natural ventilation in roadside households. Major sources of NO2 indoors are unvented gas heaters and cookers. Predictors of indoor NO2 are ventilation, season, and outdoor NO2 levels. VOCs are emitted from a wide range of indoor and outdoor sources, including smoking, solvent use, renovations, and household products. Formaldehyde levels are higher in newer houses and in the presence of new furniture, while PAH levels are higher in smoking households. High indoor particulate matter, NO2 and VOC levels were typically associated with respiratory symptoms, particularly asthma symptoms in children. (4) Conclusions: Household characteristics and occupant activities play a large role in indoor exposure, particularly cigarette smoking for PM2.5, gas appliances for NO2, and household products for VOCs and PAHs. Home location near high-traffic-density roads, redecoration, and small house size contribute to high indoor air pollution. In most studies, air exchange rates are negatively associated with indoor air pollution. These findings can inform interventions aiming to improve IAQ in residential properties in a variety of settings.

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Relationship between indoor, outdoor, and personal fine particle concentrations for individuals with COPD and predictors of indoor-outdoor ratio in Mexico city

Cited by 16 publications

References 35 publications

Effect of Personal Exposure to PM2.5 on Respiratory Health in a Mexican Panel of Patients with COPD

Effect of Personal Exposure to PM2.5 on Respiratory Health in a Mexican Panel of Patients with COPD

Personal exposures to traffic-related particle pollution among children with asthma in the South Bronx, NY

Indoor Exposure to Selected Air Pollutants in the Home Environment: A Systematic Review

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