Chemotherapy agents and hypertension: a focus on angiogenesis blockade

Two observations highlight the importance of this review. The first observation is that high blood pressure is the most frequent comorbid condition in cancer registries which directly affects the prognosis of the patient. The second observation is that long-term cancer survivors now have a higher risk of cardiovascular disease than of recurrent cancer, and hypertension contributes to this risk. New approaches to cancer chemotherapy disrupt angiogenesis; subjects receiving these agents often have an associated increase in blood pressure. In this article we concentrate on observations published over the past 2 years in this rapidly developing field, outline putative mechanisms and time frames for these prohypertensive effects, and conclude with some management recommendations based on current knowledge.

Discovery and validation of drug targets for tumour angiogenesis

The formation of blood vessels is a key process in the progression of solid tumours, providing the means for tumour growth and metastasis. A number of drugs are currently being developed to exploit inhibition of angiogenesis in the therapy of cancer. An even greater number of genes that are regulated in models of in vitro angiogenesis have been identified. These genes present potential drug targets for the development of novel, more efficient, drugs that will enable the judicious design of drug cocktails that may be able to account for the many different cancer pathologies and their drug resistance properties. Dealing with the validation of hundreds of potential angiogenesis drug targets requires the utilisation of experimental technology platforms that enable concomitant and dynamic target selection filtering and validation. Such platforms should act as a funnel-like medium-to-low throughput processes that enable the sequential short-listing of hundreds of candidates culminating in the selection of only a small number of well-validated targets that are manageable by drug screening regimes.