Associations between microvascular function and short-term exposure to traffic-related air pollution and particulate matter oxidative potential

Zhang, Xian; Staimer, Norbert; Tjoa, Tomas; Gillen, Daniel L.; Schauer, James J.; Shafer, Martin M.; Hasheminassab, Sina; Pakbin, Payam; Longhurst, John; Sioutas, Constantinos; Delfino, Ralph J.

doi:10.1186/s12940-016-0157-5

Environmental Health

Table 4 Spearman correlation matrix of 5-day average of components in size-fractionated PM^a

From: Associations between microvascular function and short-term exposure to traffic-related air pollution and particulate matter oxidative potential

	PM_0.18									PM_0.18–2.5										PM_2.5–10
Pollutants	T PAHs	Hopa-nes	OA	OC	EC	T ROS	WS ROS	DTT	T Metals	T mass	T PAHs	Hopa-nes	OA	OC	EC	T ROS	WS ROS	DTT	T Metals	T mass	OC	EC	T ROS	WS ROS	DTT	T Metals
PM_0.18
Mass	0.58	0.63	0.29	0.74	0.62	0.47	0.45	0.72	0.70	0.00	0.50	0.44	0.24	0.52	0.24	0.18	0.14	0.38	0.57	−0.32	0.26	0.11	−0.40	−0.36	0.34	0.23
T PAHs		0.89	0.51	0.80	0.75	0.10	0.11	0.76	0.81	0.13	0.94	0.86	0.71	0.87	0.37	0.18	0.21	0.52	0.68	−0.60	0.55	0.51	−0.30	−0.42	0.57	0.61
Hopanes			0.60	0.82	0.72	0.17	0.16	0.79	0.78	0.13	0.85	0.78	0.58	0.80	0.42	0.16	0.20	0.56	0.68	−0.47	0.49	0.46	−0.27	−0.38	0.58	0.61
OA				0.52	0.27	0.09	0.11	0.42	0.30	0.21	0.54	0.65	0.55	0.54	0.25	0.08	0.23	0.45	0.37	−0.33	0.32	0.40	−0.10	−0.15	0.66	0.35
OC					0.83	0.45	0.44	0.86	0.80	0.08	0.73	0.72	0.43	0.76	0.46	0.26	0.28	0.61	0.70	−0.36	0.53	0.36	−0.25	−0.29	0.49	0.57
EC						0.42	0.42	0.77	0.68	0.19	0.64	0.51	0.36	0.76	0.58	0.39	0.28	0.57	0.66	−0.23	0.57	0.31	−0.07	−0.07	0.29	0.67
T ROS							0.98	0.41	0.25	0.01	−0.02	−0.02	−0.15	0.12	0.34	0.30	0.28	0.17	0.18	0.28	0.20	−0.04	0.12	0.13	−0.01	0.09
WS ROS								0.42	0.23	−0.01	−0.01	0.00	−0.12	0.13	0.35	0.28	0.27	0.15	0.16	0.26	0.21	0.00	0.12	0.15	0.00	0.11
DTT									0.81	0.00	0.68	0.59	0.30	0.63	0.50	0.14	0.17	0.44	0.68	−0.42	0.45	0.25	−0.27	−0.37	0.40	0.45
T Metals^b										0.00	0.76	0.61	0.33	0.64	0.32	0.13	0.18	0.48	0.80	−0.46	0.50	0.33	−0.40	−0.51	0.42	0.51
PM_0.18–2.5
Mass											0.18	0.12	0.21	0.36	0.19	0.65	0.67	0.48	0.24	0.26	0.15	0.29	0.47	0.43	0.32	0.24
T PAHs												0.90	0.73	0.85	0.32	0.09	0.22	0.49	0.63	−0.54	0.60	0.56	−0.29	−0.44	0.67	0.65
Hopanes													0.77	0.81	0.23	0.08	0.18	0.47	0.52	−0.60	0.55	0.51	−0.34	−0.43	0.71	0.52
OA														0.70	0.15	−0.03	0.14	0.35	0.27	−0.53	0.31	0.47	−0.20	−0.30	0.61	0.37
OC															0.47	0.31	0.35	0.62	0.63	−0.42	0.59	0.56	−0.09	−0.16	0.63	0.67
EC																0.41	0.46	0.25	0.27	0.15	0.31	0.33	0.27	0.29	0.18	0.52
T ROS																	0.84	0.37	0.30	0.27	0.11	0.14	0.33	0.47	0.11	0.14
WS ROS																		0.40	0.32	0.22	0.16	0.26	0.43	0.44	0.30	0.25
DTT																			0.57	−0.16	0.42	0.35	0.14	0.01	0.41	0.53
T Metals^b																				−0.37	0.51	0.23	−0.11	−0.20	0.32	0.53
PM_2.5–10
Mass																					−0.04	−0.01	0.60	0.67	−0.31	−0.06
OC																						0.55	0.06	0.00	0.32	0.75
EC																							0.19	0.11	0.39	0.51
T ROS																								0.87	−0.11	0.23
WS ROS																									−0.20	0.09
DTT																										0.39

Abbreviations: DTT dithiothreitol, EC elemental carbon, OA Organic acids, OC organic carbon, PM particulate matter, ROS reactive oxygen species, T total, WS water-soluble
Bold numbers indicate correlation values ≥ 0.60 and P < 0.05
^aPollutants are mean-centered by region
^bTotal sum of transition metals include V, Cr, Mn, Ni, Cu and Fe

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