1 research outputs found
Relationship between exposure to particulate matter and biomarkers among bus driver In Klang Valley.
This cross-sectional comparative study investigates the association between particulate matters
(PM; PM10, PM2.5 and ultrafine particle (UFP) and concentration of biomarkers; Interleukin-6 (IL-6) and Tumor
Necrosis Factor- Alpha (TNF-α) using 62 bus drivers as exposed group and 62 administrative staff as
comparative group in Klang Valley, Malaysia. T-test results showed that the mean exposure level of PM10 (t =
8.14, p<0.01), PM2.5 (t = 9.95, p<0.01) and UFP (t = 19.61, p<0.01) were significantly higher among the bus
drivers compared to comparative group. Mann-Whitney U test of IL-6 (z = -2.43, p<0.05) and TNF-α (z = -5.88,
p<0.01) were also found to be significantly higher in the bus drivers. Positive correlations were found between
the exposure level of PM and concentration of biomarkers. In conclusion, the bus drivers showed higher
concentration of IL-6 and TNF-α and were at a higher risk of getting respiratory illnesses compared to
comparative group. Thus, more attention should be given on the control of high level of exposure to PM in order
to minimize the adverse health effects among the groups at risk