Can hydrogen therapy help with sepsis brain complications?

Yes, this study found hydrogen therapy protected brain cells and improved cognitive function in sepsis models. The treatment reduced brain inflammation and prevented cell death by activating protective cellular pathways.

How does hydrogen therapy protect the brain during sepsis?

Hydrogen activates the Nrf2/YY1 pathway, which increases production of protective enzymes like heme oxygenase-1. This reduces oxidative stress and improves mitochondrial function in brain cells, preventing damage from sepsis-related inflammation.

What types of brain cells does hydrogen therapy protect?

The study showed hydrogen protected astrocytes and microglia, two important types of brain support cells. These cells help maintain brain function and when damaged during sepsis, can lead to cognitive problems.

Is hydrogen therapy safe for sepsis patients?

Hydrogen has an excellent safety profile with no known toxic effects in humans. However, this research was conducted in laboratory and animal models, so human clinical trials are needed to confirm safety and effectiveness in sepsis patients.

How was hydrogen administered in this sepsis study?

The study used hydrogen gas treatment in laboratory cell cultures and animal models. The specific delivery method and dosage would need to be optimized for human patients in future clinical trials.

Hydrogen Therapy Shows Promise for Sepsis Brain Complications

Authors: Yang Zhang, Juntai Chen, Haidong Wu, Lixin Li, Xuejia Yang, Keguan Lai, Jingyu Bao, Keliang Xie, Yonghao Yu
Journal: International Immunopharmacology
Year: 2023
DOI: 10.1016/j.intimp.2023.110009
Study Type: Mouse
Outcome: Positive
Peer Reviewed: Yes
Country: China
Health Condition: Sepsis-Associated Encephalopathy
Body System: Nervous System

TL;DR

Hydrogen treatment may be a promising new way to reduce brain damage and improve recovery in sepsis patients by protecting brain cells and their energy-producing structures.

Key Finding

Hydrogen gas reduced oxidative stress and cell death in brain cells and improved cognitive function in mice with sepsis-associated encephalopathy by activating a protein complex (Nrf2/YY1) that enhances mitochondrial quality control.

Summary

This study investigated how hydrogen gas protects brain cells during sepsis-associated encephalopathy, a serious brain complication that can occur in sepsis patients. Using mouse models and laboratory-grown brain cells, researchers found that hydrogen reduced harmful molecules called free radicals, prevented cell death, and improved how cells' energy-producing structures (mitochondria) function by activating a specific protein pathway involving Nrf2 and YY1 proteins.

Practical Takeaway

This is early-stage research conducted in mice and laboratory cells, not humans. While the results suggest hydrogen gas may have protective effects on brain cells during severe infection, much more research—including human clinical trials—would be needed before any therapeutic recommendations could be made. The study provides a potential mechanism for how hydrogen might work, but does not establish safety or effectiveness in people.

Abstract

Background: Sepsis-associated encephalopathy (SAE) is a complication of the central nervous system in patients with sepsis. Currently, no effective treatment for sepsis is available. Hydrogen plays a protective role in different diseases; however, the detailed mechanism of hydrogen-treated disease remains unclear. The purpose of this study was to investigate the effect of hydrogen on SAE in vitro and in vivo and the mechanism of hydrogen in mitochondrial dynamics and its function in astrocytes and microglia stimulated by lipopolysaccharides (LPSs). Methods: Animal models of SAE were generated by cecal ligation and puncture, and the SAE model was established by in vitro LPS stimulation. MTT, lactate dehydrogenase (LDH), reactive oxygen species (ROS), heme oxygenase-1 (HO-1) activity, mitochondrial membrane potential (MMP), and cell apoptosis assays were used to determine the effect of hydrogen on astrocytes and microglia stimulated by LPSs. The relationships between nuclear factor erythroid 2-related factor 2 (Nrf2), YY1, and HO-1 were examined by chromatin immunoprecipitation and co-immunoprecipitation. Mitochondrial homeostasis-related proteins in LPS-stimulated glial cells and brain tissues of SAE mice were detected by western blotting. The effects of hydrogen treatment in the SAE mouse model were investigated using Morris water maze and Y-maze analyses. Results: After performing experiments with different concentrations of LPSs in vitro, we selected 1000 ng/ml for subsequent experiments. Hydrogen attenuated the increase in ROS, LDH, and apoptosis and promoted decreases in cell activity and MMP, further promoting an increase in HO-1 expression induced by LPSs in astrocytes and microglia. Moreover, hydrogen further promoted the expression of Nrf2, HO-1, PGC-1α, TFAM, PARKIN, and PINK1, inhibited LPS-induced OPA1 and MFN2 expression in astrocytes and microglia, and downregulated the expression of DRP1 after LPS induction. Intriguingly, hydrogen treatment enhanced the binding between Nrf2 and YY1. However, silencing Nrf2 or YY1 abolished the protective effects of hydrogen on cell activity, LDH, ROS, and MMP; apoptosis; and regulation of Nrf2, HO-1, PGC-1α, TFAM, OPA1, DRP1, MFN2, PARKIN, and PINK1 in microglia. Finally, hydrogen treatment improved the results of behavioral detection, apoptosis, Nrf2, HO-1, PGC-1α, TFAM, OPA1, DRP1, MFN2, PARKIN, PINK1, and cytokines in SAE in vivo. Conclusions: Hydrogen improved cell injury and mitochondrial quality, which were associated with HO-1 expression promoted by the Nrf2/YY1 complex in vitro. Thus, hydrogen treatment may represent a novel therapeutic method for treating SAE.