Hydrogen Gas Protects Against Depression from Chronic Stress in Rats
- Authors
- Jiaxin Li, Gaimei Hao, Yupeng Yan, Ming Li, Gaifen Li, Zhengmin Lu, Zhibo Sun, Yanjing Chen, Haixia Liu, Yukun Zhao, Wu Meng, Xiangxin Bao, Yong Wang, Yubo Li
- Journal
- Neurochemistry International
- Year
- 2024
- DOI
- 10.1016/j.neuint.2024.105914
- Study Type
- Rat
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Depression
- Body System
- Nervous System
TL;DR
Breathing in hydrogen gas can reduce depression-like symptoms and protect brain cells in rats exposed to chronic stress.
Key Finding
Hydrogen gas inhalation reversed depression-like behaviors and brain damage in stressed rats by restoring neurotransmitter levels, reducing inflammation and oxidative stress, and preserving mitochondrial function.
Summary
Researchers exposed rats to chronic unpredictable stress to create a depression-like condition, then treated some with hydrogen gas inhalation. Hydrogen-treated rats showed improved mood-related behaviors, less brain damage, restored levels of mood-regulating chemicals (neurotransmitters), and better functioning of mitochondria (the energy-producing parts of cells). The study suggests hydrogen may protect the brain from stress-related damage through multiple mechanisms.
Practical Takeaway
This is an early-stage animal study showing hydrogen may have protective effects against stress-related depression. However, results from rat studies do not automatically translate to humans, and no human trials have yet tested whether hydrogen inhalation produces similar benefits in people with depression or chronic stress. More research, including human studies, would be needed before drawing conclusions about therapeutic use.
Abstract
Background and purpose: The field of hydrogen medicine has garnered extensive attention since Professor Ohsawa established that low concentrations of hydrogen (2%-4%) exert antioxidant effects. The present study aimed to evaluate the therapeutic effect of molecular hydrogen in a CUMS rat model. Methods: A total of 40 SD rats were randomly divided into a control group, a model group, a hydrogen group, and a positive drug group. Four weeks post-modeling, hydrogen inhalation and other treatments were administered. Behavioral, biochemical, and immunohistochemical evaluations were performed after treatment. Results: Hydrogen inhalation alleviated depressive behavior and hippocampal neuronal damage in CUMS rats, as well as restored the levels of neurotransmitters, inflammatory factors, and oxidative stress. Moreover, it maintained mitochondrial homeostasis and up-regulated the expression of PGC-1α, PINK1, and Parkin. Conclusions: The results collectively indicated that hydrogen significantly attenuated CUMS-induced depressive-like behavior and monoamine neurotransmitter deficiency, as well as protected the brain from oxidative stress and inflammatory damage and effectively preserved mitochondrial homeostasis. Keywords: Chronic mild unpredictable stress; Depression; Hydrogen; Mitochondrial autophagy; Mitochondrial biogenesis.