Increased oxidative/nitrosative stress and decreased antioxidant enzyme activities in prostate cancer.
OBJECTIVE
The study was aimed to evaluate the oxidative/nitrosative stress status in prostate cancer (CaP) and benign prostatic hyperplasia (BPH).


METHODS
312 men from two different populations were included: 163 men from Macedonia (73 CaP patients, 67 BPH patients and 23 control subjects) and 149 men from Turkey (34 prostate cancer patients, 100 BPH patients and 15 control subjects). We measured erythrocyte malondialdehyde (MDA) levels, erythrocyte activities of superoxide dismutase (CuZn-SOD), glutathione peroxidase (GPX) and catalase (CAT); plasma nitrite/nitrate (NO(2)(-)/NO(3)(-)), cGMP and 8-hydroxy-2'-deoxyguanosine (8-OHdG) levels.


RESULTS
A similar pattern of alteration in the oxidative/nitrosative stress-related parameters was found in both, Macedonian and Turkish studied samples: higher MDA concentrations with lower GPX and CuZn-SOD activities in CaP patients versus controls and BPH groups. The CAT activity was decreased in the CaP patients versus controls in the Turkish studied sample. Furthermore, CaP patients had increased plasma NO(2)(-)/NO(3)(-) and cGMP levels versus controls and BPH groups in both studied samples.


CONCLUSIONS
This study has confirmed an imbalance in the oxidative stress/antioxidant status and revealed an altered nitrosative status in prostate cancer patients.
Arsova-Sarafinovska
Zorica
Z
Republic Institute for Health Protection, Department of Drug Quality Control, Skopje, Republic of Macedonia.
Eken
Ayse
A
Matevska
Nadica
N
Erdem
Onur
O
Sayal
Ahmet
A
Savaser
Ayhan
A
Banev
Saso
S
Petrovski
Daniel
D
Dzikova
Sonja
S
Georgiev
Vladimir
V
Sikole
Aleksandar
A
Ozgök
Yaşar
Y
Suturkova
Ljubica
L
Dimovski
Aleksandar J
AJ
Aydin
Ahmet
A
D000368:Aged; D000975:Antioxidants / Q000378:metabolism*; D002374:Catalase / Q000097:blood; D005979:Glutathione Peroxidase / Q000097:blood; D006801:Humans; D008297:Male; D008315:Malondialdehyde / Q000097:blood; D008875:Middle Aged; D009566:Nitrates / Q000097:blood*; D009573:Nitrites / Q000097:blood*; D018384:Oxidative Stress; D011470:Prostatic Hyperplasia / Q000097:blood / Q000201:enzymology*; D011471:Prostatic Neoplasms / Q000097:blood / Q000201:enzymology*; D018843:Republic of North Macedonia; D013482:Superoxide Dismutase / Q000097:blood; D014421:Turkey
D000975:Antioxidants; D009566:Nitrates; D009573:Nitrites; D008315:Malondialdehyde; D002374:Catalase; D005979:Glutathione Peroxidase; D013482:Superoxide Dismutase