Evaluation of the impact of indoor air filtration on particulate matter exposures and measures of cardiovascular health

Indoor air pollution (IAP) or environmental tobacco smoke (ETS) exposure may influence nasopharyngeal carriage of bacterial species and development of lower respiratory tract infection (LRTI). The aim of this study was to longitudinally investigate the impact of antenatal or postnatal IAP/ETS exposure on nasopharyngeal bacteria in mothers and infants.A South African cohort study followed mother–infant pairs from birth through the first year. Nasopharyngeal swabs were taken at birth, 6 and 12 months for bacterial culture. Multivariable and multivariate Poisson regression investigated associations between nasopharyngeal bacterial species and IAP/ETS. IAP exposures (particulate matter, carbon monoxide, nitrogen dioxide, volatile organic compounds) were measured at home visits. ETS exposure was measured through maternal and infant urine cotinine. Infants received the 13-valent pneumococcal andHaemophilus influenzaeB conjugate vaccines.There were 881 maternal and 2605 infant nasopharyngeal swabs. Antenatal ETS exposure was associated withStreptococcus pneumoniaecarriage in mothers (adjusted risk ratio (aRR) 1.73 (95% CI 1.03–2.92)) while postnatal ETS exposure was associated with carriage in infants (aRR 1.14 (95% CI 1.00–1.30)) Postnatal particulate matter exposure was associated with the nasopharyngeal carriage ofH. influenzae(aRR 1.68 (95% CI 1.10– 2.57)) orMoraxella catarrhalis(aRR 1.42 (95% CI 1.03–1.97)) in infants.Early-life environmental exposures are associated with an increased prevalence of specific nasopharyngeal bacteria during infancy, which may predispose to LRTI.

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Exposure Assessment of Environmental Tobacco Aerosol from Heated Tobacco Products: Nicotine and PM Exposures under Two Limited Conditions

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17228536 ◽

2020 ◽

Vol 17 (22) ◽

pp. 8536

Author(s):

Tomoyasu Hirano ◽

Tokuaki Shobayashi ◽

Teiji Takei ◽

Fumihiko Wakao

Keyword(s):

Particulate Matter ◽

Indoor Air ◽

Indoor Environment ◽

Tobacco Products ◽

Health Concerns ◽

Standard Value ◽

Preliminary Study ◽

The Impact ◽

Indoor Pm2.5 ◽

Pm2.5 Concentration

It is too early to provide a clear answer on the impact of exposure to the second-hand aerosol of heated tobacco products (HTPs) in the planning of policy for smoke-free indoors legislation. Here, we conducted a preliminary study to evaluate indoor air quality with the use of HTPs. We first measured the concentration of nicotine and particulate matter (PM2.5) in the air following 50 puffs in the use of HTPs or cigarettes in a small shower cubicle. We then measured these concentrations in comparison with the use equivalent of smoking 5.4 cigarettes per hour in a 25 m3 room, as a typical indoor environment test condition. In the shower cubicle test, nicotine concentrations in indoor air using three types of HTP, namely IQOS, glo, and ploomTECH, were 25.9–257 μg/m3. These values all exceed the upper bound of the range of tolerable concentration without health concerns, namely 3 µg/m3. In particular, the indoor PM2.5 concentration of about 300 to 500 μg/m3 using IQOS or glo in the shower cubicle is hazardous. In the 25 m3 room test, in contrast, nicotine concentrations in indoor air with the three types of HTP did not exceed 3 μg/m3. PM2.5 concentrations were below the standard value of 15 μg/m3 per year for IQOS and ploomTECH, but were slightly high for glo, with some measurements exceeding 100 μg/m3. These results do not negate the inclusion of HTPs within a regulatory framework for indoor tolerable use from exposure to HTP aerosol, unlike cigarette smoke.

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Micronutrient-rich dietary intake is associated with a reduction in the effects of particulate matter on blood pressure among electronic waste recyclers at Agbogbloshie, Ghana

10.21203/rs.3.rs-18829/v1 ◽

2020 ◽

Author(s):

Sylvia Akpene Takyi ◽

Nil Basu ◽

John Arko-Mensah ◽

Paul Botwe ◽

Afua Asabea Amoabeng Nti ◽

...

Keyword(s):

Blood Pressure ◽

Particulate Matter ◽

Adverse Effects ◽

Cardiovascular Health ◽

Electronic Waste ◽

Ambient Air ◽

Informal Recycling ◽

Ambient Exposure ◽

Guideline Value ◽

The Impact

Abstract Background: Informal recycling of electronic waste (e-waste) releases particulate matter (PM) into the ambient air. Human exposure to PM has been reported to induce adverse effects on cardiovascular health. However, the impact of PM on the cardiovascular health of e-waste recyclers in Ghana has not been studied. Although intake of micronutrient-rich diet is known to modify these PM-induced adverse health effects, no data are available on the relationship between micronutrient status of e-waste recyclers and the reported high-level exposure to PM.Objectives: We investigated whether intake of micronutrient-rich diets ameliorates the adverse effects of ambient exposure to PM2.5 on blood pressure (BP).Methods: This study was conducted from March 2017 to October 2018; involving the measurement of breathing zone PM2.5 using real-time monitor. Dietary micronutrient (Fe, Ca, Mg, Se, Zn, and Cu) intake was assessed using a 2-day 24-hour recall, whiles cardiovascular indices such as systolic BP (SBP) and diastolic BP (DBP) and pulse pressure (PP) were measured using a sphygmomanometer. Ordinary least-squares regression models were used to estimate the joint effects of ambient exposure to PM2.5 and dietary micronutrient intake on cardiovascular health outcomes. The results: Fe was consumed in adequate quantities. However, Ca, Se, Zn, Mg, and Cu were inadequately consumed among e-waste recyclers and controls. Dietary Ca and Fe intake were associated with reduced SBP and PP of e-waste recyclers. Although PM2.5 levels were higher in e-waste recyclers, the controls exceeded the WHO 24-hour guideline value (25µg/m3). Exposure to 1µg/m3 of PM2.5 was associated with increased HR of e-waste recyclers by 0.06 bpm; implying informal recycling of e-waste may be a risk factor for tachycardia. Also, dietary Fe intake was associated with a reduction in systolic blood pressure levels of e-waste recyclers.Conclusions: Consistent adequate dietary Fe intake was associated with reduced effects of PM2.5 on SBP of e-waste recyclers overtime. However, as all other micronutrients are essential in ameliorating adverse effects of PM on cardiovascular health, nutrition-related policy dialogues are necessary to educate informal e-waste recyclers and the general population on specific nutrients of concern and their impact on the exposure to ambient air pollutants.

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Influence of combined dust reducing carpet and compact air filtration unit on the indoor air quality of a classroom

Environmental Science Processes & Impacts ◽

10.1039/c4em00506f ◽

2015 ◽

Vol 17 (2) ◽

pp. 316-325 ◽

Cited By ~ 13

Author(s):

Paul T. J. Scheepers ◽

Jeroen J. de Hartog ◽

Judith Reijnaerts ◽

Gwendolyn Beckmann ◽

Rob Anzion ◽

...

Keyword(s):

Particulate Matter ◽

Air Quality ◽

Primary School ◽

Indoor Air Quality ◽

Indoor Air ◽

Air Filtration ◽

School Classroom ◽

Filtration Unit

In situ testing in a primary school classroom showed that combining air filtration with a carpet reduced particulate matter concentrations.

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An indoor air filtration study in homes of elderly: cardiovascular and respiratory effects of exposure to particulate matter

ISEE Conference Abstracts ◽

10.1289/isee.2013.p-2-08-03 ◽

2013 ◽

Vol 2013 (1) ◽

pp. 4511

Author(s):

Dorina Gabriela Karottki ◽

Michal Spilak ◽

Marie Frederiksen ◽

Lars Bo Gunnarsen ◽

Elvira V. Brauner ◽

...

Keyword(s):

Particulate Matter ◽

Indoor Air ◽

Air Filtration ◽

Respiratory Effects

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An indoor air filtration study in homes of elderly: cardiovascular and respiratory effects of exposure to particulate matter

Environmental Health ◽

10.1186/1476-069x-12-116 ◽

2013 ◽

Vol 12 (1) ◽

Cited By ~ 56

Author(s):

Dorina Gabriela Karottki ◽

Michal Spilak ◽

Marie Frederiksen ◽

Lars Gunnarsen ◽

Elvira Vaclavik Brauner ◽

...

Keyword(s):

Particulate Matter ◽

Indoor Air ◽

Air Filtration ◽

Respiratory Effects

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The Impact of Portable Air Filters on Indoor Air Pollution and Cardiovascular Health in a Woodsmoke-impacted Community in British Columbia, Canada

Epidemiology ◽

10.1097/01.ede.0000392248.67402.2c ◽

2011 ◽

Vol 22 ◽

pp. S185 ◽

Cited By ~ 1

Author(s):

Ryan Allen ◽

Chris Carlsten ◽

Barbara Karlen ◽

Sara Leckie ◽

Stephan van Eeden ◽

...

Keyword(s):

Air Pollution ◽

British Columbia ◽

Indoor Air ◽

Indoor Air Pollution ◽

Cardiovascular Health ◽

Air Filters ◽

The Impact

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Indoor air particulate matter exposure of commuter bus passengers in Istanbul, Turkey

Indoor and Built Environment ◽

10.1177/1420326x15608932 ◽

2016 ◽

Vol 26 (3) ◽

pp. 337-346 ◽

Cited By ~ 2

Author(s):

S Sinan Keskin ◽

Elif Dilmac

Keyword(s):

Particulate Matter ◽

Air Quality ◽

Indoor Air ◽

Cardiovascular Health ◽

Quality Standards ◽

Traffic Density ◽

Air Quality Standards ◽

Limit Value ◽

Passenger Transportation ◽

Target Values

Commuter buses are in very common use in Istanbul, the most crowded city in Turkey, for inner city passenger transportation. People in commuter buses are prone to substances mainly originated from traffic related activities on streets. Scientific studies indicate that air pollutants create problems on respiratory and cardiovascular health. The objective of this study was to determine particulate matter (PM) mass concentrations and their elemental compositions in indoor air environments of commuter buses serving in Istanbul. In this context, two commuter bus lines that can represent the general traffic density in Istanbul were selected as study location. Indoor air PM10 and PM2.5 samplings were performed in the buses serving on these lines under routine traffic conditions and while passengers were in the buses. Measurements indicated that the concentrations were well above the guidelines values given by the WHO and European air quality standards while they were below the short term and above the long term guidelines values of Air Quality Directives of Turkey at the time of the measurements. The measured elemental concentrations were below the limit value for Pb and target values for As, Cd, and Ni given by the European Air Quality Standards for Total Suspended Particulates (TSP). Results obtained for old technology commuter buses emphasize the benefits of air conditioned and tightly isolated new buses for better indoor air quality on PM concentrations.

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