The ALHS within which this work was nested was funded by:  New Investigator Research Grant (Mortimer) from the Medical Research Council (Ref: MR/L002515/1).  National Institute for Environmental Health Sciences (US) grant (Balmes and Mortimer) (R56 ES023566)  The ALHS was one of the research themes of CAPS funded by:  Joint Global Health Trials Grant from the Medical Research Council (Ref: MR/K006533/1), UK Department for International Development and Wellcome Trust (Ref: 085790/Z/08/Z).  Additional support was provided by a MRC Partnership Grant “BREATHE-AFRCA” (Ref: MR/L009242/1) and the Malawi Liverpool Wellcome Trust Programme of Clinical Research (Ref: Wellcome Trust 206545)

Balmes, JR

Flitz, G

Gordon, SB

Grigg, J

Lesosky, M

Liu, AM

Miyashita, L

Mortimer, K

Ndamala, C

Whitehouse, AL

The Science of The Total Environment

Exposure to particulate matter (PM) from burning of biomass for cooking is associated with adverse health effects. It is unknown whether or not cleaner burning biomass-fuelled cookstoves reduce the amount of PM inhaled by women compared with traditional open fires.

We sought to assess whether airway macrophage black carbon (AMBC) - a marker of inhaled dose of carbonaceous PM from biomass and fossil fuel combustion - is lower in Malawian women using a cleaner burning biomass-fuelled cookstove compared with those using open fires for cooking. AMBC was assessed in induced sputum samples using image analysis and personal exposure to carbon monoxide (CO) and PM were measured using Aprovecho Indoor Air Pollution meters. A fossil-fuel exposed group of UK women was also studied.

Induced sputum samples were obtained from 57 women from which AMBC was determined in 31. Median AMBC was 6.87 μm2 (IQR 4.47–18.5) and 4.37 μm2 (IQR 2.57–7.38) in the open fire (n = 11) and cleaner burning cookstove groups (n = 20), respectively (p = 0.028). There was no difference in personal exposure to CO and PM between the two groups. UK women (n = 5) had lower AMBC (median 0.89 μm2, IQR 0.56–1.13) compared with both Malawi women using traditional cookstoves (p < 0.001) and those using cleaner cookstoves (p = 0.022).

We conclude that use of a cleaner burning biomass-fuelled cookstove reduces inhaled PM dose in a way that is not necessarily reflected by personal exposure monitorin

Whitehouse, Abigail L.

Miyashita, Lisa

Liu, Norrice M.

Lesosky, Maia

Flitz, Graham

Ndamala, Chifundo

Balmes, John R.

Gordon, Stephen

Mortimer, Kevin

Grigg, Jonathan

LSTM Online Archive

Use of cleaner-burning biomass stoves and airway macrophage black carbon in Malawian women

Exposure to particulate matter (PM) from burning of biomass for cooking is associated with adverse health effects. It is unknown whether or not cleaner burning biomass-fuelled cookstoves reduce the amount of PM inhaled by women compared with traditional open fires.We sought to assess whether airway macrophage black carbon (AMBC) - a marker of inhaled dose of carbonaceous PM from biomass and fossil fuel combustion - is lower in Malawian women using a cleaner burning biomass-fuelled cookstove compared with those using open fires for cooking. AMBC was assessed in induced sputum samples using image analysis and personal exposure to carbon monoxide (CO) and PM were measured using Aprovecho Indoor Air Pollution meters. A fossil-fuel exposed group of UK women was also studied.Induced sputum samples were obtained from 57 women from which AMBC was determined in 31. Median AMBC was 6.87 μm2 (IQR 4.47–18.5) and 4.37 μm2 (IQR 2.57–7.38) in the open fire (n = 11) and cleaner burning cookstove groups (n = 20), respectively (p = 0.028). There was no difference in personal exposure to CO and PM between the two groups. UK women (n = 5) had lower AMBC (median 0.89 μm2, IQR 0.56–1.13) compared with both Malawi women using traditional cookstoves (p &lt; 0.001) and those using cleaner cookstoves (p = 0.022).We conclude that use of a cleaner burning biomass-fuelled cookstove reduces inhaled PM dose in a way that is not necessarily reflected by personal exposure monitoring</p

LSTM Research Portal

English

Queen Mary Research Online

Abigail L. Whitehouse

Lisa Miyashita

Norrice M. Liu

Maia Lesosky

Graham Flitz

Chifundo Ndamala

John R. Balmes

Stephen B. Gordon

Kevin Mortimer

Jonathan Grigg

Crossref

http://archive.lstmed.ac.uk/8558/1/Science%20of%20the%20total%20environment_Use%20of%20cleaner-burning%20biomass%20stoves.pdf

Use of cleaner-burning biomass stoves and airway macrophage black carbon in Malawian women

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