Understanding the Spectrum of Chronic Liver Diseases: Pathogenesis, Diagnosis, and Treatment

Chronic liver diseases represent a major global health challenge and include a wide range of disorders such as nonalcoholic fatty liver disease, alcoholic liver disease, viral hepatitis, autoimmune hepatitis, and cirrhosis. These diseases often develop gradually over several years and may lead to liver failure, hepatocellular carcinoma, and increased mortality. Although there have been important advances in hepatology, the molecular and cellular mechanisms that drive the progression of chronic liver diseases are still not fully understood. This gap in knowledge continues to limit early diagnosis and effective treatment options.

Recent studies show that chronic liver diseases are complex and influenced by multiple genetic, epigenetic, and environmental factors. The interaction between the gut and the liver, oxidative stress, mitochondrial dysfunction, and disturbances in lipid and glucose metabolism are key contributors to liver injury and regeneration. Understanding these biological pathways can help identify early indicators of disease and possible therapeutic targets.

Diagnostic tools for chronic liver diseases have improved in recent years. Imaging methods and serum biomarkers are valuable for disease assessment, yet liver biopsy remains the standard for accurate diagnosis. However, it is invasive and not always suitable for repeated evaluation. The development of non-invasive methods such as liquid biopsies, elastography, and metabolomic profiling has created new possibilities for early detection and continuous monitoring of disease progression.

Treatment strategies are also evolving with the introduction of antifibrotic drugs, immunomodulatory agents, and gene-based therapies. These approaches hold promise for reversing fibrosis, improving liver function, and slowing disease progression. Integrating molecular discoveries with clinical practice is essential to advance personalized medicine and improve patient outcomes.

This research topic focuses on understanding the mechanisms, diagnosis, and treatment of chronic liver diseases. It aims to bring together studies that explore the biology of liver disorders, introduce innovative diagnostic technologies, and evaluate emerging therapies. Contributions that combine experimental, clinical, and computational perspectives are encouraged to promote translational progress in this important field.

Potential Areas of Research Contribution

• Molecular and cellular mechanisms involved in inflammation, fibrosis, and hepatocyte regeneration in chronic liver diseases

• Role of the gut liver connection and microbiome imbalance in the development and progression of liver disorders

• Identification and validation of non-invasive biomarkers for early diagnosis and disease staging

• Progress in imaging and omics technologies for accurate diagnosis and patient classification

• Discovery of new therapeutic targets and drugs to prevent or reverse liver fibrosis

• Influence of lifestyle, diet, and environmental exposures on liver disease development and progression

• Translational and clinical research assessing combined or individualized treatment approaches

Keywords: Chronic Liver Disease, nonalcoholic fatty liver disease, fatty liver disease

Important note: All contributions to this Research Topic must be within the scope of the section and journal to which they are submitted, as defined in their mission statements. Frontiers reserves the right to guide an out-of-scope manuscript to a more suitable section or journal at any stage of peer review.