Can hydrogen gas protect heart cells from damage?

This laboratory study found that hydrogen gas significantly protected rat heart cells from oxygen-related damage. The treatment improved cell survival and reduced inflammatory damage markers.

How does hydrogen therapy help heart cells?

Hydrogen gas appears to work by blocking harmful inflammatory pathways and boosting natural antioxidant enzymes. It also reduces the production of damaging inflammatory molecules in heart cells.

What is ischemia-reperfusion injury in the heart?

This occurs when blood flow is restored to heart tissue after being cut off, like during a heart attack or surgery. The return of oxygen can actually cause additional damage through inflammation and oxidative stress.

Is hydrogen gas safe for heart patients?

While this study showed promising results in laboratory cells, human safety and effectiveness haven't been established. Clinical trials would be needed before hydrogen could be used to treat heart conditions.

How was hydrogen gas tested in this heart study?

Researchers exposed rat heart cells to damaging conditions, then treated some with 50% hydrogen gas for various time periods. They measured cell survival, damage markers, and inflammatory responses.

Hydrogen Gas Protects Heart Cells from Oxygen Damage in Lab Study

Authors: Jingsheng Wang, Bin Ma, Xue Jiang, Chao Li, Zhaochen Lin, Yumei Wang, Jingfei Shi, Gang Wang, Chao Cui
Journal: Medical Gas Research
Year: 2024
DOI: 10.4103/mgr.MEDGASRES-D-24-00027
Study Type: Cell Culture
Outcome: Positive
Peer Reviewed: Yes
Country: China
Health Condition: Myocardial Ischemia-Reperfusion Injury
Body System: Cardiovascular

TL;DR

Hydrogen gas treatment helps protect heart cells from damage caused by a simulated heart attack and recovery process in the lab.

Key Finding

Hydrogen gas protected heart cells from simulated heart attack-and-recovery injury by activating antioxidant defenses and reducing inflammatory responses through inhibition of the Wnt/CX3CR1 signaling pathway.

Summary

Researchers exposed heart cells to conditions mimicking a heart attack followed by blood flow restoration (hypoxia/reoxygenation injury). When they treated these damaged cells with hydrogen gas, the cells recovered better—showing improved survival, reduced damage markers, and stronger antioxidant defenses. The protective effect appeared to work by turning off a specific cellular signaling pathway that normally triggers inflammation and oxidative stress (cellular damage from unstable molecules).

Practical Takeaway

This is an early-stage laboratory study using isolated rat heart cells, not human subjects or living organisms. While the results suggest hydrogen gas may have protective effects against heart injury at the cellular level, much more research—including animal studies and eventually human trials—would be needed before any therapeutic claims could be made. The findings provide a potential mechanism worth investigating further, but cannot yet inform real-world health decisions.

Abstract

Myocardial ischemia-reperfusion injury is a severe cardiovascular disease, and its treatment and prevention are crucial for improving patient prognosis and reducing the economic burden. This study aimed to explore the impact of hydrogen (H2) on hypoxia/reoxygenation (H/R) injury in H9c2 cells (derived from rat embryonic heart tissue) induced by hydrogen peroxide (H2O2) and to elucidate its underlying mechanism. An H/R injury model was established in H9c2 cells via exposure to 15 μM H2O2 for 3 hours, followed by incubation in a 5% CO2 atmosphere at 37°C for 24 hours. Then, the cells were treated with H2 (50%) for 6, 12 or 24 hours. The results demonstrated that H9c2 cells exposed to H2O2 and subjected to H/R injury presented a marked decrease in the cell survival rate, accompanied by severe morphological alterations, such as curling and wrinkling, and elevated lactate dehydrogenase levels. Notably, H2 mitigated H/R injury induced by H2O2 in a time-dependent manner, improving the morphological damage observed in H9c2 cells and decreasing lactate dehydrogenase levels. Compared with the model group, treatment with H2 increased the activities of antioxidant enzymes, including catalase, superoxide dismutase, and glutathione peroxidase, while concurrently reducing the level of malondialdehyde, an indicator of cellular damage. Furthermore, H2 treatment downregulated the expression of inflammatory cytokines and inflammatory-related factors, specifically interleukin-6, high-mobility group box 1, tumor necrosis factor-alpha, and Toll-like receptor 4, in H9c2 cells post-H/R injury. Furthermore, H2 treatment resulted in a marked decrease in the expression levels of proteins associated with the Wnt/C-X3-C-motif receptor 1 signaling pathway, such as β-catenin, glycogen synthase kinase-3 beta, adenomatous polyposis coli, and Wnt and C-X3-C-motif receptor 1. This observation suggests a potential mechanism for its protective effects against H/R injury. Therefore, H2 exerts a protective effect against H/R injury in H9c2 cells induced by H2O2, potentially by inhibiting the activated Wnt/C-X3-C-motif receptor 1 signaling pathway. This inhibition, in turn, prevents the generation of oxidative stress, inflammatory cytokines, and inflammation-associated factors.