Molecular hydrogen protects against oxidative stress-induced SH-SY5Y neuroblastoma cell death through the process of mitohormesis.
Yayoi Murakami, Masafumi Ito, Ikuroh Ohsawa · PloS one · 2017
Research-use notice
Independent study record
Each H2HUBB study page organizes source-linked research details for educational use. Interpretation should remain proportional to the study design, population, controls, and limitations.
H2HUBB TAKEAWAY
In Here, the researchers investigated the effect of H₂ on mitochondria in cultured human neuroblastoma SH-SY5Y cells, pretreatment of cells with 50% H₂ gas for 18 h in both Glc- and Gal-containing media suppressed H₂O₂ -induced cell death ( Fig 2A ), whereas post-treatment did not ( Fig 2B ). The authors concluded that increases in the expression of anti-oxidative enzymes underlying the Nrf2 pathway in H₂-treated cells indicated that mild stress caused by H₂ induced increased resistance to exacerbated oxidative stress. These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
What the Findings Mean
H2HUBB reviewed how inhaled hydrogen gas affected the outcomes measured in Here, the researchers investigated the effect of H₂ on mitochondria in cultured human neuroblastoma SH-SY5Y cells. Pretreatment of cells with 50% H₂ gas for 18 h in both Glc- and Gal-containing media suppressed H₂O₂ -induced cell death ( Fig 2A ), whereas post-treatment did not ( Fig 2B ).
What the Researchers Studied
The researchers studied Here, the researchers investigated the effect of H₂ on mitochondria in cultured human neuroblastoma SH-SY5Y cells. The study used a in vitro cell-culture laboratory experiment. The comparison condition was control condition or baseline measurements.
What Effects Did Molecular Hydrogen Have?
As a normalization control, the membranes were reprobed for 3-phosphate dehydrogenase (GAPDH) and exposed to polyclonal rabbit antibody against GAPDH (1:1000, Cell Signaling, Danvers, MA, USA). The researchers used the ΔΨ m indicator JC-1 to determine the physiological changes of mitochondria in intact cells treated with 50% H₂ for 18 h. Pretreatment of cells with 50% H₂ gas for 18 h in both Glc- and Gal-containing media suppressed H₂O₂ -induced cell death ( Fig 2A ), whereas post-treatment did not ( Fig 2B ). The authors concluded that increases in the expression of anti-oxidative enzymes underlying the Nrf2 pathway in H₂-treated cells indicated that mild stress caused by H₂ induced increased resistance to exacerbated oxidative stress. Inhalation of molecular hydrogen (H₂) gas ameliorates oxidative stress-induced acute injuries in the brain.
Why These Findings Matter
These findings from a laboratory model add evidence supporting molecular hydrogen's biological and therapeutic potential in the model studied.
How Strong Is This Evidence?
This is laboratory evidence from a in vitro cell-culture laboratory experiment. It is most informative for the biological mechanisms, cellular responses, or biochemical outcomes directly measured.
Technical Study Details
H2HUBB classifies this publication as laboratory study with laboratory or cellular evidence. The research population or model was Here, the researchers investigated the effect of H₂ on mitochondria in cultured human neuroblastoma SH-SY5Y cells. The study used a in vitro cell-culture laboratory experiment. The hydrogen delivery method was inhaled hydrogen gas.
Limitations and Safety
No separate limitations or safety findings were identified in the current-study source text available to H2HUBB.
Original Study and H2HUBB Research Context
H2HUBB presents this source-grounded research record as one contribution to the broader molecular-hydrogen evidence base.