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Co-exposure of Bi2O3 nanoparticles and bezo[a]pyrene-enhanced in vitro cytotoxicity of mouse spermatogonia cells

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Abstract

Recent attention has been focused on reproductive toxicity of nanoscale materials in combination with pre-existing environmental pollutants. Due to its unique characteristics, bismuth (III) oxide (Bi2O3) nanoparticles (BONPs) are being used in diverse fields including cosmetics and biomedicine. Benzo[a]pyrene (BaP) is a known endocrine disruptor that most common sources of BaP exposure to humans are cigarette smoke and well-cooked barbecued meat. Hence, joint exposure of BONPs and BaP in humans is common. There is scarcity of information on toxicity of BONPs in combination with BaP in human reproductive system. In this work, combined effects of BONPs and BaP in mouse spermatogonia (GC-1 spg) cells were assessed. Results showed that combined exposure of BONPs and BaP synergistically induced cell viability reduction, lactate dehydrogenase leakage, induction of caspases (-3 and -9) and mitochondrial membrane potential loss in GC-1 spg cells. Co-exposure of BONPs and BaP also synergistically induced production of pro-oxidants (reactive oxygen species and hydrogen peroxide) and reduction of antioxidants (glutathione and several antioxidant enzymes). Experiments with N-acetyl-cysteine (NAC, a reactive oxygen species scavenger) indicated that oxidative stress was a plausible mechanism of synergistic toxicity of BONPs and BaP in GC-1 spg cells. Present data could be helpful for future in vivo research and risk assessment of human reproductive system co-exposed to BONPs and BaP.

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Data availability

The datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.

Abbreviations

Bi2O3 :

bismuth (III) oxide

BONPs:

Bi2O3 nanoparticles

GC-1 spg:

mouse spermatogonia cells

BaP:

benzo[a]pyrene

PAHs:

polycyclic aromatic hydrocarbons

PXRD:

powder X-ray diffraction

FETEM:

field emission transmission electron microscopy

DLS:

dynamic light scattering

DMEM:

Dulbecco’s modified Eagle’s medium

ATCC:

American Type Culture Collection

FBS:

foetal bovine serum

PC:

positive control

MTT:

3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide

H2DCFDA:

2′-7′-dichlorodihydrofluorescein diacetate

LDH:

lactate dehydrogenase

NAC:

N-acetyl-cysteine

ROS:

reactive oxygen species

H2O2 :

hydrogen peroxide

MDA:

malondialdehyde

LPO:

lipid peroxidation

GSH:

glutathione

GPx:

glutathione peroxidase

SOD:

superoxide dismutase

CAT:

catalase

PCR:

polymerase chain reaction

Rh-123:

Rhodamine-123

MMP:

mitochondrial membrane potential

ANOVA:

one-way analysis of variance

μ:

microgram

μM:

micromole

DNA: TiO2 :

titanium dioxide, deoxyribonucleic acid

TBT:

tributyltin

BPA:

bisphenol A

BDE:

decabromodiphenyl ether-209

Cd:

cadmium

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Acknowledgements

The authors would like to extend their sincere appreciation to the Deanship of Scientific Research at King Saud University for funding this work through research group no. RG- 1439-072.

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Authors

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Maqusood Ahamed: conceptualisation, data curation, formal analysis, funding acquisition, investigation; supervision, writing—original draft, writing—review and editing. Mohd Javed Akhtar: investigation, methodology, software. M.A. Majeed Khan: data curation, formal analysis, methodology. Hisham A. Alhadlaq: formal analysis, resources, software.

Corresponding author

Correspondence to Maqusood Ahamed.

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The authors declare that they have no conflict of interest.

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Responsible editor: Mohamed M. Abdel-Daim

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Ahamed, M., Akhtar, M.J., Khan, M.A.M. et al. Co-exposure of Bi2O3 nanoparticles and bezo[a]pyrene-enhanced in vitro cytotoxicity of mouse spermatogonia cells. Environ Sci Pollut Res 28, 17109–17118 (2021). https://doi.org/10.1007/s11356-020-12128-6

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  • DOI: https://doi.org/10.1007/s11356-020-12128-6

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