Investigation of neuroprotective effects of H2 by CiteSpace-based bibliometric analysis.

Background and aims: Neuroprotection plays an important role in the treatment of brain disorders. In recent years, studies using rat models and clinical trials have demonstrated the positive effects of hydrogen treatment on neurological disorders and brain injuries. Hence, it is of great significance to shed light on this issue. In this article, CiteSpace is employed for visualization and bibliometric analysis of the research frontiers and evolving trends related to the neuroprotective effect of hydrogen.

Methods: All articles published from 2009 to 2023 that discussed the neuroprotective effects of hydrogen in cerebrovascular diseases were retrieved from the Web of Science. Using CiteSpace, a visualization analysis was conducted on aspects such as countries, institutions, authors, keywords, and Co cited references, which enables an intuitive observation of current research hotspots.

Results: After manual screening, a total of 106 articles were retrieved. Over time, The number of publications has increased annually. Regarding national contributions, the top three countries with the highest number of publications include China, the United States, and Japan. The Second Military Medical University is the institution that publishes the most articles and has significant influence in the field of hydrogen neuroprotection. Sun, Xuejun and Domoki, Ferenc were the most productive. The most common keywords include hydrogen, oxidative stress, inflammation, and apoptosis. Potential areas of focus for future research consist of early brain injury, hydrogen, ischemia-reperfusion injury and hypothermia treatment.

Conclusion: The bibliometric study presented herein offers insights into the current status and trends of research on hydrogen in the field of cerebrovascular diseases. Future research trends suggest that hydrogen contributes significantly to the cerebrovascular domain through its anti-inflammatory, antioxidative, and anti-apoptotic mechanisms. This study can aid researchers in identifying hot topics and exploring new research directions.