Trace metals and over-expression of metallothioneins in bladder tumoral lesions: a case-control study

Correction

During the publication process of this work [1], we noted that the column for nickel in table 2 was not showing the concentration values in the proper units. This change has been made in the updated table (see table 2).

Table 2.

Concentrations (mean μg.kg^-1 ± standard error) of arsenic, cadmium, chromium, lead and nickel as measured in hair and bladder tissue, from controls and case lesions.

	Arsenic	Cadmium	Chromium	Lead	Nickel
Bladder tissue
Controls (n = 17)	19.94 ± 6.46	21.60 ± 2.02	269.41 ± 38.18	10.29 ± 1.84	80 ± 30
All cases (n = 37)	23.00 ± 2.62	25.91 ± 1.95	247.84 ± 33.36	14.73 ± 2.87	70 ± 10
Carcinomas (n = 18)	17.94 ± 4.21	20.83 ± 2.13	283.89 ± 41.85	13.33 ± 3.77	60 ± 10
Hair
Controls (n = 13)	59.54 ± 12.44	16.25 ± 3.01	123.85 ± 25.83	460.77 ± 176.78	90 ± 20
All cases (n = 23)	61.96 ± 8.25	23.20 ± 2.39a	634.35 ± 127.78a	1095.22 ± 214.77a	300 ± 50a
Carcinomas (n = 10)	58.30 ± 12.69	21.61 ± 3.44	559.00 ± 198.40a	960.00 ± 318.04	280 ± 80a

^a differs significantly (p ≤ 0.05) from controls.