Hydrogen Injections Protect Muscle from Blood Flow Damage in Rabbits
- Authors
- Dai-Jun Wang, Hua Tian, Bao-Xiang Zhuang, Hong-Juan Wu
- Journal
- Acta Orthopaedica et Traumatologica Turcica
- Year
- 2015
- DOI
- 10.3944/AOTT.2015.15.0096
- Study Type
- Rabbit
- Outcome
- Positive
- Peer Reviewed
- Yes
- Country
- China
- Health Condition
- Ischemia-Reperfusion Injury
- Body System
- Musculoskeletal
TL;DR
Injecting hydrogen gas into the abdomen of rabbits reduced muscle damage and inflammation caused by temporarily cutting off and then restoring blood flow to their limbs.
Key Finding
Hydrogen injection reduced inflammatory markers and oxidative stress in rabbit muscle tissue after limb ischemia-reperfusion injury, while also increasing protective enzyme expression.
Summary
Researchers injected hydrogen gas into rabbits that had experienced a temporary loss of blood flow to their hind legs, followed by blood flow restoration. They measured changes in two proteins involved in inflammation and oxidative stress (a type of cellular damage). Hydrogen injection reduced markers of inflammation and oxidative stress compared to rabbits that didn't receive hydrogen, suggesting hydrogen may protect muscle tissue from damage caused by interrupted blood flow.
Practical Takeaway
This is an early-stage animal study showing hydrogen may help protect muscle tissue from ischemia-reperfusion injury, but results from rabbit models do not directly translate to humans. Much more research, including human trials, would be needed before any therapeutic claims could be made.
Abstract
Abstract Objective: To investigate the effects of intraperitoneal hydrogen (H2) injection on the mRNA expression levels of inducible nitric oxide synthase (iNOS) and endothelial nitric oxide synthase (eNOS) as well as the serum malondialdehyde (MDA) level in a rabbit model of limb ischemia-reperfusion (I/R)-induced skeletal muscle injury. Methods: To establish the hind limb I/R animal model, 30 rabbits were randomly assigned to one of three groups: Sham, I/R and IRH. An intraperitoneal injection of H2 was given to the IRH group, while an equivalent amount of air was given to the Sham and I/R groups. At 3, 6, 12 and 24 h post reperfusion, the serum MDA level, as well as the skeletal muscle iNOS and eNOS mRNA expression levels, were determined Results: Both iNOS mRNA expression and serum MDA levels were higher in the I/R group than the Sham group (P < 0.01) and lower in the IRH group than the I/R group (P < 0.01 or P < 0.05) at various time points after reperfusion. The eNOS mRNA expression level exhibited no significant difference between the I/R and Sham groups following reperfusion but was significantly higher in the IRH group than in the Sham group (P < 0.01 or P < 0.05). Conclusions: During the I/R process, the expression of iNOS mRNA was up-regulated along with an increase in MDA. Intraperitoneal injection of H2 could down-regulate iNOS mRNA expression and up-regulate eNOS mRNA expression in the I/R process, suggesting a protective effect of H2 in I/R-induced skeletal muscle injury.