Tags

Type your tag names separated by a space and hit enter

Antioxidant role of zinc in PCB (Aroclor 1254) exposed ventral prostate of albino rats.
J Nutr Biochem. 2004 Oct; 15(10):608-13.JN

Abstract

The ability of zinc to retard oxidative processes has been recognized for many years. Polychlorinated biphenyls (PCBs) are persistent and bioaccumulative environmental toxicants. Previous study has indicated that PCBs can have deleterious effects, including oxidative stress, on various aspects of reproduction in male rats. The aim of this study was to determine the antioxidant role of zinc in PCB-exposed ventral prostate of albino rats. A group of 20 rats were treated with Aroclor 1254 (2 mg/kg body weight/day, i.p.) for 30 days. After the PCB treatment, 10 rats were treated as PCB control. The remaining 10 rats were given zinc (Zn SO(4)) (200 mg/kg body weight/day, p.o.) for 10 days. Ventral prostatic enzymatic antioxidants such as superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and glutathione-S-transferase (GST) were estimated in all the groups. Hydrogen peroxide (H(2)O(2)), lipid peroxidation (LPO) and ventral prostatic acid phosphatase (ACP) were also estimated. Serum hormonal profiles such as total tri-iodothyronine (T(3)), thyroxine (T(4)), thyroid stimulating hormone (TSH), testosterone, and estradiol were estimated. Ventral prostatic androgen and estrogen receptors, ventral prostatic zinc content, and serum zinc concentration were also quantified in all the groups. Antioxidant enzymes such as SOD, CAT, GPx, GST, and ACP were decreased while an increase in H(2)O(2) and LPO were observed in PCB-treated animals. Decreased serum total T(3), T(4), testosterone, estradiol and increased TSH were observed in PCB-exposed rats. Ventral prostatic androgen and estrogen receptors were also decreased significantly in PCB-exposed rats. Zinc administration restored to previous levels all parameters except ventral prostatic ACP. These results suggest that PCB induces oxidative stress in rat ventral prostate by decreasing the levels of antioxidant enzymes; the effects could be reversed by the administration of zinc. The adverse effect of PCBs (Aroclor 1254) and zinc on ventral prostate might be due to indirect action through hormonal regulation.

Authors+Show Affiliations

Department of Endocrinology, Post Graduate Institute of Basic Medical Sciences, University of Madras, Taramani, Chennai 600 113, India.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15542352

Citation

Venkataraman, P, et al. "Antioxidant Role of Zinc in PCB (Aroclor 1254) Exposed Ventral Prostate of Albino Rats." The Journal of Nutritional Biochemistry, vol. 15, no. 10, 2004, pp. 608-13.
Venkataraman P, Sridhar M, Dhanammal S, et al. Antioxidant role of zinc in PCB (Aroclor 1254) exposed ventral prostate of albino rats. J Nutr Biochem. 2004;15(10):608-13.
Venkataraman, P., Sridhar, M., Dhanammal, S., Vijayababu, M. R., Srinivasan, N., & Arunakaran, J. (2004). Antioxidant role of zinc in PCB (Aroclor 1254) exposed ventral prostate of albino rats. The Journal of Nutritional Biochemistry, 15(10), 608-13.
Venkataraman P, et al. Antioxidant Role of Zinc in PCB (Aroclor 1254) Exposed Ventral Prostate of Albino Rats. J Nutr Biochem. 2004;15(10):608-13. PubMed PMID: 15542352.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Antioxidant role of zinc in PCB (Aroclor 1254) exposed ventral prostate of albino rats. AU - Venkataraman,P, AU - Sridhar,M, AU - Dhanammal,S, AU - Vijayababu,M R, AU - Srinivasan,N, AU - Arunakaran,J, PY - 2004/11/16/pubmed PY - 2005/3/30/medline PY - 2004/11/16/entrez SP - 608 EP - 13 JF - The Journal of nutritional biochemistry JO - J Nutr Biochem VL - 15 IS - 10 N2 - The ability of zinc to retard oxidative processes has been recognized for many years. Polychlorinated biphenyls (PCBs) are persistent and bioaccumulative environmental toxicants. Previous study has indicated that PCBs can have deleterious effects, including oxidative stress, on various aspects of reproduction in male rats. The aim of this study was to determine the antioxidant role of zinc in PCB-exposed ventral prostate of albino rats. A group of 20 rats were treated with Aroclor 1254 (2 mg/kg body weight/day, i.p.) for 30 days. After the PCB treatment, 10 rats were treated as PCB control. The remaining 10 rats were given zinc (Zn SO(4)) (200 mg/kg body weight/day, p.o.) for 10 days. Ventral prostatic enzymatic antioxidants such as superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and glutathione-S-transferase (GST) were estimated in all the groups. Hydrogen peroxide (H(2)O(2)), lipid peroxidation (LPO) and ventral prostatic acid phosphatase (ACP) were also estimated. Serum hormonal profiles such as total tri-iodothyronine (T(3)), thyroxine (T(4)), thyroid stimulating hormone (TSH), testosterone, and estradiol were estimated. Ventral prostatic androgen and estrogen receptors, ventral prostatic zinc content, and serum zinc concentration were also quantified in all the groups. Antioxidant enzymes such as SOD, CAT, GPx, GST, and ACP were decreased while an increase in H(2)O(2) and LPO were observed in PCB-treated animals. Decreased serum total T(3), T(4), testosterone, estradiol and increased TSH were observed in PCB-exposed rats. Ventral prostatic androgen and estrogen receptors were also decreased significantly in PCB-exposed rats. Zinc administration restored to previous levels all parameters except ventral prostatic ACP. These results suggest that PCB induces oxidative stress in rat ventral prostate by decreasing the levels of antioxidant enzymes; the effects could be reversed by the administration of zinc. The adverse effect of PCBs (Aroclor 1254) and zinc on ventral prostate might be due to indirect action through hormonal regulation. SN - 0955-2863 UR - https://www.unboundmedicine.com/medline/citation/15542352/Antioxidant_role_of_zinc_in_PCB__Aroclor_1254__exposed_ventral_prostate_of_albino_rats_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0955286304001123 DB - PRIME DP - Unbound Medicine ER -