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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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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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.
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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