Green and chemical synthesis of CuO nanoparticles: comparative reproductive toxicity evaluation at various phases and in offsprings

Abstract

Metallic nanoparticles (NPs) are used in various biomedical applications due to their widespread utility. This study compares the reproductive toxicity of chemically synthesized CuO NPs (ChemSyn CuO NPs) and green synthesized CuO NPs (GrSyn CuO NPs) in rats and their offspring during mating, pregnancy, and lactation phases. CuO NPs were synthesized using Rhus punjabensis extract and their physio-morphological characteristics were illustrated. Both approaches showed pure and spherical NPs with an average size of 14.94 ± 0.6 and 19.02 ± 0.9 nm. Orally administered NPs at a dose of 100 mg kg−1 body weight of ChemSyn NPs reduced peroxidase activity by 38% and glutathione levels by 36%. In female rats treated with ChemSyn NPs, TBARS were increased by 11%, and total protein increased by 54%. The offspring did not show notable differences in their antioxidant status, but reactive substances in female offspring increased by 32%, and total protein content decreased by 57%. Genotoxicity of 2.72% and 1.9% tail DNA was observed in male and female pups, respectively. Testosterone levels were reduced in male parents, and progesterone concentration increased in female parents in a dose-dependent manner. In contrast, GrSyn NPs were more biocompatible, and thyroid hormones in the parents showed less variation. No obvious alterations were observed in the histological patterns of the gonads. These findings indicate that GrSyn NPs can be explored as drug carriers and contrast agents in vivo.