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Hepatobiliary disease in cystic fibrosis: a survey of current issues and concepts
Insights
Hepatobiliary complications in cystic fibrosis (CF) are rising with survival rates. Early diagnosis remains challenging, but understanding bile acid metabolism may offer new prevention strategies for CF-related liver disease.
Area of Science:
- Hepatology
- Gastroenterology
- Genetic Disorders
Background:
- Hepatobiliary complications in cystic fibrosis (CF) are increasing as patient survival improves.
- Current diagnostic methods (liver function tests, bile acids, ultrasound) lack sensitivity for early detection of liver involvement.
- While gallstone formation in CF is understood, the mechanism behind focal biliary cirrhosis, the characteristic CF liver lesion, remains unclear.
Purpose of the Study:
- To review the current understanding of hepatobiliary complications in cystic fibrosis.
- To explore the potential role of mucus plugging in the pathogenesis of CF liver disease.
- To discuss the therapeutic implications of bile acid metabolism correction for preventing CF-related cirrhosis.
Main Methods:
- Literature review of existing studies on cystic fibrosis, hepatobiliary complications, and bile acid metabolism.
- Analysis of current diagnostic limitations for early detection of liver involvement in CF.
- Discussion of experimental data regarding bile acid abnormalities and their potential impact on CF cirrhosis.
Main Results:
- The incidence of liver disease in CF patients is increasing.
- Early diagnosis of hepatic involvement in CF is difficult with current methods.
- Mucus plugging is a potential initiating factor for focal biliary cirrhosis in CF.
Conclusions:
- Further research into the pathogenesis of focal biliary cirrhosis in CF is needed.
- Investigating and potentially correcting bile acid metabolism abnormalities may offer a strategy to slow or prevent CF-associated liver cirrhosis.
- Improved diagnostic tools are required for timely intervention in CF liver disease.
Abstract:
The incidence of hepatobiliary complications of cystic fibrosis (CF) has been increasing in parallel with the rate of survival. Detection of hepatic involvement remains a problem, as liver function tests, serum bile acid determinations, and ultrasonography do not permit an early diagnosis. The pathogenesis of cholelithiasis has been elucidated in the past few years. However, the mechanism leading to the pathognomonic CF lesion, focal biliary cirrhosis, is still unknown. There are indications that mucus plugging may be the ancestral lesion and the triggering factor. The possibility that correction of the abnormalities of bile acid metabolism could slow the progress or prevent CF cirrhosis is discussed in light of recent experimental data.