Bibliometric analysis of neutrophil elastase research in the post-COVID-19 era: trends, frontiers, differential mapping, and emerging trends

Neutrophil elastase (NE) is a serine protease primarily produced by neutrophils, playing a pivotal role in various physiological and pathological processes. This study aimed to provide insights into the research landscape surrounding NE and its implications in the post-COVID-19 era. The current study employed a cross-sectional design based on bibliometric analysis. Articles were retrieved from the Scopus database and analyzed quantitatively using VOSviewer and Bibliometrix software to evaluate publication trends, authorship patterns, citation dynamics, and emerging research themes. The analysis highlighted countries and institutions significantly contributing to NE research, revealing global trends and hotspots. Collaboration patterns were assessed, showcasing productive partnerships within the field. Key research topics identified include NE’s roles in inflammation, tissue damage, and disease pathogenesis. The COVID-19 pandemic reshaped the thematic map of NE research, driving focus toward NE's involvement in COVID-19 pathophysiology, therapeutic interventions, and its role in complications associated with the disease. This bibliometric analysis offers a comprehensive view of NE research, focusing on its functions, pathophysiological roles, and implications for diseases such as lung disorders and COVID-19, providing a foundation for future research directions.