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Multaq Attorney : Chronic Hepatitis B—HBeAg positive
People with HBeAg positive chronic hepatitis B have only an 8 to 15 percent probability each year of becoming negative for HBeAg and HBV DNA. This is known as a spontaneous remission. When this happens, temporary gross elevation in transaminases (AST and ALT) is observed, followed by a rapid return to normal levels. Antibodies to HBeAg (known as HBeAb) are formed. This is known as seroconversion. These people are no longer contagious to others and they experience minimal, if any. liver damage going forward. In fact, any past liver damage often resolves within the next few years. This resolution confirms the transition from chronic hepatitis B into the inactive HBsAg carrier state, as discussed above. Women, older people, and those individuals with genotype B are likeliest to seroconvert. Unfortunately, reactivation to the infectious state can occur in some of these people. Thus, these people must be observed carefully, ft is not clear which factors play a role in causing some people to relapse into an infectious state. Certainly excessive alcohol intake may have a harmful effect on people with chronic hepatitis B. And it has been demonstrated that excessive iron intake may promote persistent HBV replication in some people. (Excessive iron in itself can damage the liver and may lead to cirrhosis and liver cancer. This is discussed in more detail in chapters 18 and 23.) Therefore, people with chronic hepatitis B are advised to refrain from alcohol intake and should avoid excess iron supplementation. Seroconverters whose immune systems subsequently become compromised are at risk for a relapse. Immune-system function can become impaired by a number of factors, including infection with the human immunodeficiency virus (HIV), treatment with chemotherapeutic agents for cancer, or use of corticosteroids such as prednisone.
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Chronic Hepatitis B—HBeAg negative
People with chronic hepatitis B who are negative for HBeAg have a mutant strain of chronic hepatitis B. A mutation is a permanent alteration of the hepatitis B virus’s genetic makeup. There are many different types of hepatitis B mutations. In this case, the genetic mutation is characterized by the failure of the virus to make the hepatitis B “e” antigen (HBeAg). This is known as a precore mutation. This mutation does not affect the virus’s ability to replicate. Therefore, on blood tests, these people are negative for HBeAg, but positive for HBV DNA. Men are more likely than women to have this mutation, and HBeAg negative chronic hepatitis B does not occur with genotype A. Precore mutant hepatitis B has been responsible for several cases of surprised transmission of hepatitis B to others, as these people were unaware that they were infectious. This strain of hepatitis B may be genetically superior to HBeAg positive chronic hepatitis B. Thus, liver disease is usually more active and liver scarring more advanced. These individuals are more likely to develop cirrhosis compared with HBeAg positive people. Furthermore, this strain is usually more resistant to treatment.
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In some instances, a person who is HBsAg positive can become HBsAg negative, which is the last category of chronic hepatitis B, known as resolved chronic hepatitis B. However, it is very uncommon and occurs only at a rate of approximately 0.5 to 2 percent of hepatitis patients each year. Loss of HBsAg is more likely to occur in women than men and is rare in people with the mutant strain.
Most, but not all, people who do resolve will develop the hepatitis B antibody (HbsAb). Liver enzymes (ALT and AST) normalize. Clearance of hepatitis B antigen decreases the risk of progression to liver failure and liver cancer. Most people who have resolved have a benign course of disease. However, approximately half of these people continue to have very low levels of HBV DNA and are considered to be noninfectious to others.
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