A new direction for psoriasis research?

Portland, Ore., Jan. 3, 2004 The National Psoriasis Foundation today hailed research that may eventually lead to additional therapies for treating psoriasis, an incurable immune-mediated disease that affects 5 million Americans. In a paper to be published January 3 in the Journal of Investigative Dermatology, Dr. Helen S. Young and colleagues at the University of Manchester, in Manchester, UK, provide the first evidence that there are alterations in a gene involving the development of the vascular system that may contribute to psoriasis susceptibility.

"This work offers a new way of thinking about psoriasis, and may open up new approaches to treating the disease," said Gail Zimmerman, president and CEO of the National Psoriasis Foundation. "While therapies focused on the immune system are proving highly beneficial for many psoriasis patients, therapies that target the vascular system might also one day provide relief to those facing this challenging, and often debilitating, disease."

It has been previously observed that aspects of the vascular system, or blood vessel network in the skin, are altered in psoriasis. An essential regulator of vascular development produced by skin cells, called VEGF or Vascular Endothelial Growth Factor, is found in high levels in psoriatic skin lesions. In this study, the authors show that certain SNPs, or single nucleotide polymorphisms, of the VEGF gene itself occur with greater frequency in a subset of people with psoriasis.

In a commentary appearing alongside the Young et al paper, Michael Detmar, M.D., of the Cutaneous Biology Research Center at Massachusetts General Hospital in Boston writes: "Together with the biological evidence for a pathogenetic role of VEGF in psoriasis, the study by Young et al suggests that VEGF acts as a modifier gene in psoriasis and that therapeutic blockade of the VEGF/VEGF receptor system might represent a novel, pharmacogenomic approach for the future treatment of psoriasis."

Contact: Michael Paranzino
National Psoriasis Foundation

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