Current Medicinal Chemistry - Volume 15, Issue 9, 2008

Stat-3 (Signal Transduction and Activator of Transcription) is a member of the Stat family of latent, cytosolic transcription factors that directly relate signals from the plasma membrane to the nucleus. This protein is constitutively activated by aberrant upstream tyrosine kinase activities in a broad spectrum of human tumors, and it has been identified as a promising target for cancer drug discovery. This review deals with the recent Read More

The potential for carotenoids to modulate chronic diseases related to smoke is currently under investigation and renewed interest has been placed on achieving a better understanding of the mechanism(s) of action of carotenoids in smoke-exposed biological systems. Available data currently show that, while carotenoids alone are not harmful, their interaction with smoke may shift from beneficial to detrimental depending on t Read More

Malignant mesothelioma is a highly invasive tumor originating from the mesothelial linings of the pleura, peritoneum and pericardium. It is seldom amenable to surgical intervention and poorly responsive to radiotherapy, leaving chemotherapy as the main therapeutic option for most patients. The development of effective drug regimens against mesothelioma has proven extremely difficult and a standard first-line treatment for Read More

It is almost 70 years since the discovery by Huggins et al. that androgens are essential for prostate cancer (PC) growth and progression, and there has been about 30 years experience using ketoconazole for PC theraphy. Since then we have come a long way in learning about the disease and developing new strategies to approach it, among which is cytochrome 17α-hydroxylase-C17,20-lyase (CYP17) inhibition. This review focu Read More

Treatment of human herpes simplex virus (HSV) diseases represents an important goal, as herpetic infections are not controlled by vaccination. Many therapeutic agents have been developed and used for HSV infections and several alternative natural compounds are under investigation. Most of the drugs clinically employed against HSV types 1 and 2 are represented by guanosine nucleoside analogues, such as aciclovir a Read More

Transmissible spongiform encephalopathies (TSEs), also called prion diseases, are fatal neurodegenerative disorders. An abnormal isoform of the prion protein (PrPSc) generated by post-translational modification of the cellular prion protein (PrPC) is believed to be the main component of this infectious agent. PrPSc is relatively resistant to proteinase K (PK) digestion. This characteristic has been widely accepted as the physicoc Read More

It has been known for a long time that inhaled adenosine-monophosphate (AMP) induces airway obstruction in asthmatic patients, but not in healthy subjects. The mechanism of AMP is indirect and occurs via its decay product, adenosine. It stimulates mast cells through its low-affinity receptor A2B to release histamine, which ultimately leads to smooth muscle contraction. This feature of adenosine reveals its pro-inflam Read More

The fibrinolytic system includes a broad spectrum of proteolytic enzymes with physiological and pathophysiological functions in several processes, such as haemostatic balance, tissue remodeling, tumor invasion, angiogenesis and reproduction. The main enzyme of the plasminogen activator system is plasmin, which is responsible for the degradation of fibrin into soluble degradation products. The activation of plasminogen int Read More

Chronic hepatitis B virus (HBV) infection has a variable course leading to cirrhosis and hepatocellular carcinoma (HCC). The pathogenesis and clinical outcome of HBV infection are strictly dependent on both viral factors, such as life cycle and genotypic variants, and host immune response (i.e. viral persistence). Although therapy of hepatitis B is evolving, which between single and/or combined agents are most effective, how Read More