This book focuses on the quantitative structure-activity relationship of the disposition and activities of various pharmacological groups. It presents a systematic approach for linking different side effect of drugs to their molecular structure and physiochemical properties.

Hepatitis C virus (HCV) was first identified in 1989 as the etiologic agent of non-A, non-B hepatitis [1] and is currently recognized as the leading cause of chronic liver disease worldwide. In contrast to hepatitis B virus infection, in which only about 5% of adult infections become chronic, more than 80% of HCV-infected patients develop chronic hepatitis. Moreover, 20-50% of those persistently infected with HCV will develop liver cirrhosis and hepatocellu lar carcinoma (HCC) [2]. It is e...

Traditional Chinese medicine has a strong scientific basis, but the science of these important preparations is often rarely discussed. Western approaches often simplify traditional Chinese medicine to drug discovery in Chinese plants, however, the majority of traditional Chinese medications use complex mixtures of plant extracts, rather than single purified drugs. The combination of different extracts is based on yin, yang and chi theories, which are often poorly understood in the West.