Genotoxicity of Polycyclic Aromatic Hydrocarbons and Nitro-Derived in Respirable Airborne Particulate Matter Collected from Urban Areas of Rio de Janeiro (Brazil)

Table 3

Mitotic index and percentage of mitosis stages and mitotic aberrations in the root tip cells of A. cepa treated with organic extract derived at site 1.


Month	µg/mL	Mitotic index	% P.	% M.	% A.	% T.	% T.A.	% MCN	% Bridge	% Break	% Lagging

	NC	0.03 ± 0.00	1.40	0.90	0.50	1.10	0.07	0.05	0.00	0.00	0.02
	5	0.04 ± 0.01	3.20*	0.80	0.60	0.30	0.12	0.02	0.02	0.00	0.08
August	10	0.02 ± 0.00*	0.20*	1.00	0.40	1.00	0.35	0.20	0.10	0.00	0.05
August	15	0.01 ± 0.01*	0.03*	0.30	0.10	0.20*	0.55	0.55	0.00	0.00	0.00
	20	0.01 ± 0.01*	0.02*	0.10*	0.03*	0.20*	0.05	0.03	0.00	0.02	0.00
	25	0.00 ± 0.00*	0.00*	0.00*	0.00*	0.00*	0.00	0.00	0.00	0.00	0.00
	NC	0.02 ± 0.01	0.80	0.60	0.20	0.50	0.15	0.00	0.05	0.05	0.05
	5	0.04 ± 0.02	1.10	1.30	0.80	0.50	0.54	0.04	0.20	0.08	0.22
September	10	0.07 ± 0.03	2.00	2.50*	1.50*	1.50	1.30*	0.10	0.40	0.40	0.40
September	15	0.01 ± 0.01	0.50	0.30	0.30	1.30	0.60	0.40	0.05	0.05	0.10
	20	0.06 ± 0.05	2.00	2.00	1.00	1.40	1.08*	0.06	0.33	0.26	0.43
	25	0.01 ± 0.01	0.50	0.50	0.10	0.30	0.28	0.03	0.06	0.16	0.03
	NC	0.02 ± 0.00	1.40	0.40	0.00	0.00	0.10	0.08	0.00	0.02	0.00
	5	0.11 ± 0.05	7.00	0.70	0.40	2.60	0.10	0.00	0.00	0.07	0.03
October	10	0.05 ± 0.05	2.70	0.70	0.50	1.60	0.18	0.00	0.03	0.10	0.05
October	15	0.06 ± 0.04	2.60	1.30	0.30	2.30	0.29*	0.07	0.05	0.12*	0.05
	20	0.05 ± 0.03	2.50	1.10	0.40	0.80	0.10	0.00	0.02	0.03	0.05
	25	0.06 ± 0.03	3.20	1.00	0.50	1.00	0.31	0.03	0.00	0.18	0.10

P.: prophase; M.: metaphase; A.: anaphase; T.: telophase; T.A.: total abnormalities; MCN.: micronucleus; NC.: negative control—DMSO; positive control = benzo(a)pyrene 10 µg/mL (mitotic index = 0.00*; % T.A. = 0.20; % MCN = 0.16; % bridge = 0.04) * ≤ 0.05.

BioMed Research International

Genotoxicity of Polycyclic Aromatic Hydrocarbons and Nitro-Derived in Respirable Airborne Particulate Matter Collected from Urban Areas of Rio de Janeiro (Brazil)

Table 3