Nanoparticle-based therapeutic strategies for chronic liver diseases: Advances and insights

The liver is pivotal in protein synthesis, glucose and lipid metabolism, and detoxification. However, the liver is susceptible to both acute and chronic disorders, with chronic conditions being fatal. Chronic liver diseases (CLDs), such as liver fibrosis, which usually represents the early manifestation of cirrhosis, primarily result from hepatitis B and C viruses infections, metabolic disorders, alcohol abuse, immune-mediated attacks, and cholestatic injury. The progression of liver fibrosis contributes to the development of cirrhosis, which can further lead to hepatocellular carcinoma, portal hypertension, hepatic decompensation, and hepatic encephalopathy. The extracellular matrix deposition over time leading the hepatocyte necrosis (cirrhosis) is the main structural feature of CLDs and may cause hepatic failure. Certain conditions, such as hepatitis and autoimmune diseases, may promote the rapid deterioration of liver function. Acute and chronic liver failure causes may vary, with early referral for liver transplantation improving the chance of recovery. The healthcare system need improvements to manage patients with non-alcoholic fatty liver disease and alcoholic fatty liver disease, as they have the potential to progress to cirrhosis. Both conditions involve the release of reactive oxygen species and damage-associated molecular patterns from cytokines, hepatic stellate cells, and hepatocyte autophagy, leading to prolonged inflammation. While various medications target fibrosis and liver damage, nanoparticle-based drug delivery systems offer additional promise by promoting faster liver regeneration. This review provides a comprehensive overview of the potential of nanoparticle systems as a future therapeutic approach for treating liver disorders.