About Primary Biliary Cirrhosis

Overview

Primary biliary cirrhosis, now known as primary biliary cholangitis (PBC), is a long-lasting autoimmune disease that affects the liver. In this condition, the body’s immune system mistakenly attacks and slowly destroys the small bile ducts in the liver. These ducts carry bile, a fluid that helps digest fats and absorb certain vitamins, from the liver to the small intestine. When the bile ducts are damaged, bile builds up in the liver, causing inflammation, scarring (fibrosis), and, if left untreated, can eventually lead to cirrhosis, which is severe liver damage. PBC mostly affects women and can result in symptoms such as itching, fatigue, stomach discomfort, and dryness of the eyes and mouth. In the early stages of PBC, many people might not notice symptoms for several years. While newer treatments have improved the outlook for people with PBC, how long someone lives with the disease can differ from person to person.

Causes and Risk Factors

The exact cause of primary biliary cholangitis (PBC) is not fully understood, but it is believed to result from a combination of genetic and environmental factors, including:

Autoimmune reaction: The immune system mistakenly attacks the bile ducts, leading to inflammation and damage.
Genetic factors: Certain genes have been identified that increase the risk of developing PBC.
Environmental triggers: Exposure to certain environmental factors may trigger the autoimmune response in individuals with susceptible genes.

Non-modifiable risk factors for PBC, which are factors that cannot be controlled to reduce the risk of developing the condition, include:

Age: PBC is more common in individuals between the ages of 30 and 60.
Family history: Having a parent or sibling with PBC increases the risk.
Gender: PBC is more common among women.

Modifiable risk factors, which are factors that can be influenced or changed, for PBC are not well-established. However, some studies suggest that smoking cigarettes and exposure to certain chemicals may increase the risk.

It's important to note that while these risk factors may increase the likelihood of developing PBC, they do not guarantee its development. If you have concerns about your risk or symptoms, it's best to consult with a healthcare professional for an accurate diagnosis and personalized advice.

Symptoms

The most common early symptoms of primary biliary cirrhosis (PBC) include:

Fatigue: Feeling tired is the most common symptom experienced by people with PBC.
Itchy skin (pruritus): Many individuals with PBC may develop itchy skin.

As PBC progresses or becomes more severe, other symptoms that may occur include:

Abdominal pain: Discomfort or pain in the upper-right side of the abdomen.
Joint pain: Some individuals may experience joint pain or arthritis.
Dry eyes and dry mouth: These symptoms may occur due to a linked autoimmune condition called Sjögren's syndrome.
Darkening of skin color: As the disease worsens, the skin may darken.
Fatty deposits on the skin: Yellow bumps called xanthomas may appear on the skin.
Symptoms of cirrhosis: These can include edema (swelling), jaundice (yellowing of the skin or eyes), and unintended weight loss.

It's important to note that some people may not have any symptoms when they are first diagnosed with PBC, and symptoms can vary from person to person. If you experience any concerning symptoms, it's always best to consult with your healthcare professional for an accurate diagnosis and appropriate management.

Diagnosis

To diagnose primary biliary cirrhosis (PBC), doctors commonly use the following examinations, tests, and procedures:

Medical history: Your doctor will ask about your symptoms and any family history of liver disease.
Physical exam: Your doctor will examine you for signs of liver disease, such as jaundice or an enlarged liver.
Blood tests: These can help determine liver function and check for specific antibodies associated with PBC.
Imaging tests: X-rays and ultrasounds may be used to rule out other causes of bile duct damage.
Liver biopsy: A small sample of liver tissue is taken and examined under a microscope to confirm the diagnosis.

To determine the stage or severity of PBC, additional examinations, tests, and procedures may include:

Blood tests: These tests check how well the liver is working and look for signs that the disease is getting worse.
Imaging tests: Scans like MRI or CT can be used to see how much damage or scarring has happened in the liver.
FibroScan or elastography: These are painless tests that measure how stiff the liver is, which helps show how much scarring (fibrosis) is present.
Liver biopsy: Sometimes, doctors might take another small sample of liver tissue to check how the liver has changed over time.

It's important to consult with your healthcare professional to discuss which examinations, tests, and procedures are appropriate for your individual situation.

Treatment Options

The main goals of treating primary biliary cirrhosis (PBC) are to slow down liver damage, control symptoms, help the liver work better, and avoid complications. Here are the treatment options and how they help:

Medication Types:

Ursodeoxycholic acid (UDCA): This is the main medicine for PBC. It helps the liver work better, slows down scarring, and reduces the need for a liver transplant.
Obeticholic acid (OCA): If UDCA doesn’t work well, doctors may give OCA. It also helps improve liver function.

Therapies:

Stem cell-based therapy: A study used mesenchymal stem cells (MSCs) along with UDCA to treat PBC. This combination improved liver function and reduced symptoms.

Therapeutic Procedures:

ERCP or stents: These procedures can be used to open up bile ducts that have narrowed in some PBC cases.

Lifestyle Changes:

Avoiding alcohol: For people with alcohol-related cirrhosis, not drinking alcohol is important to stop further liver damage.
Healthy lifestyle: Eating a balanced diet, exercising, and maintaining a healthy weight can support liver health.

Other Treatments:

Other medications: Medicines can help with symptoms like itching or weak bones. Vitamin supplements might also be needed.
Liver transplant: If PBC becomes severe and other treatments don’t work, a liver transplant might be necessary.

It's important to note that treatment plans should be individualized based on each patient's specific needs and medical history. Consult with a healthcare professional for personalized advice.

Medication dosing may be affected by many factors. Check with your health care professional about dosing for your individual situation. Other side effects can occur. Check with your health care professional or read the information provided with your medication for additional side effect information.