Abstract
This study demonstrates the protective potential of hydroxytyrosol (HT), an olive oil phenol, against methylmercury (MeHg)-induced neurotoxicity using IMR-32 human neuroblastoma cell line. HT inhibited MeHg-induced cytotoxicity and genotoxicity as confirmed by MTT, micronucleus, and comet assays. Cells preconditioned with HT showed reduction of MeHg-induced cellular oxidative stress along with the maintenance of glutathione, superoxide dismutase, glutathione-S-tranferase, and catalase. Fluorescence microscopy and DNA ladder assays indicated the inhibitory effect of HT against MeHg-induced apoptosis, which was further established by Western blotting. An effective concentration of 5 µM HT caused downregulation of p53, bax, cytochrome c, and caspase 3 and upregulation of prosurvival proteins including nuclear factor erythroid 2-related factor 2 (Nrf2) and metallothionein. This work indicates the cytoprotective potential of HT against MeHg-induced toxicity primarily by the lowering of oxidative stress, which may be endorsed to its antigenotoxic and antiapoptotic potential, in addition to its free radical scavenging ability.
| Original language | English |
|---|---|
| Pages (from-to) | 1264-1275 |
| Number of pages | 12 |
| Journal | Environmental Toxicology |
| Volume | 31 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 01-10-2016 |
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All Science Journal Classification (ASJC) codes
- Toxicology
- Management, Monitoring, Policy and Law
- Health, Toxicology and Mutagenesis
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Hydroxytyrosol, a dietary phenolic compound forestalls the toxic effects of methylmercury-induced toxicity in IMR-32 human neuroblastoma cells. / Mohan, Vishnu; Das, Shubhankar; Rao, Satish B.S.
In: Environmental Toxicology, Vol. 31, No. 10, 01.10.2016, p. 1264-1275.Research output: Contribution to journal › Article
TY - JOUR
T1 - Hydroxytyrosol, a dietary phenolic compound forestalls the toxic effects of methylmercury-induced toxicity in IMR-32 human neuroblastoma cells
AU - Mohan, Vishnu
AU - Das, Shubhankar
AU - Rao, Satish B.S.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - This study demonstrates the protective potential of hydroxytyrosol (HT), an olive oil phenol, against methylmercury (MeHg)-induced neurotoxicity using IMR-32 human neuroblastoma cell line. HT inhibited MeHg-induced cytotoxicity and genotoxicity as confirmed by MTT, micronucleus, and comet assays. Cells preconditioned with HT showed reduction of MeHg-induced cellular oxidative stress along with the maintenance of glutathione, superoxide dismutase, glutathione-S-tranferase, and catalase. Fluorescence microscopy and DNA ladder assays indicated the inhibitory effect of HT against MeHg-induced apoptosis, which was further established by Western blotting. An effective concentration of 5 µM HT caused downregulation of p53, bax, cytochrome c, and caspase 3 and upregulation of prosurvival proteins including nuclear factor erythroid 2-related factor 2 (Nrf2) and metallothionein. This work indicates the cytoprotective potential of HT against MeHg-induced toxicity primarily by the lowering of oxidative stress, which may be endorsed to its antigenotoxic and antiapoptotic potential, in addition to its free radical scavenging ability.
AB - This study demonstrates the protective potential of hydroxytyrosol (HT), an olive oil phenol, against methylmercury (MeHg)-induced neurotoxicity using IMR-32 human neuroblastoma cell line. HT inhibited MeHg-induced cytotoxicity and genotoxicity as confirmed by MTT, micronucleus, and comet assays. Cells preconditioned with HT showed reduction of MeHg-induced cellular oxidative stress along with the maintenance of glutathione, superoxide dismutase, glutathione-S-tranferase, and catalase. Fluorescence microscopy and DNA ladder assays indicated the inhibitory effect of HT against MeHg-induced apoptosis, which was further established by Western blotting. An effective concentration of 5 µM HT caused downregulation of p53, bax, cytochrome c, and caspase 3 and upregulation of prosurvival proteins including nuclear factor erythroid 2-related factor 2 (Nrf2) and metallothionein. This work indicates the cytoprotective potential of HT against MeHg-induced toxicity primarily by the lowering of oxidative stress, which may be endorsed to its antigenotoxic and antiapoptotic potential, in addition to its free radical scavenging ability.
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U2 - 10.1002/tox.22134
DO - 10.1002/tox.22134
M3 - Article
VL - 31
SP - 1264
EP - 1275
JO - Environmental Toxicology
JF - Environmental Toxicology
SN - 1520-4081
IS - 10
ER -