International Photodynamic Association (IPA)


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Light is in the Air

"The International Day of Light will provide an annual focal point for the continued appreciation of the central role that light plays in the lives of the citizens of the world in areas of science, culture and art, education, sustainable development, and in fields as diverse as medicine, communications and energy. Following the highly successful International Year of Light and Light-based Technologies 2015, the broad theme of light will allow many different sectors of society to participate in activities around the world around May 16th to raise awareness of science and technology, art and culture, and their importance in achieving the goals of UNESCO — education, equality and peace."

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The Circuitous Route by a Group of Novices to a New FDA Approved Cancer Therapy: HOW DID WE DO THIS? By Thomas J. Dougherty PhD

"How we got there... When I first started as a cancer researcher at one of the top cancer centers in the country, I needed to find my own project knowing nothing about cancer I went to the cancer literature in search of an unsolved problem in cancer. I found one relating to radiation therapy and started to work on it. This required a new compound that had to be non-toxic to be useful. While testing the toxicity in cells a technician told me to keep the cell out of the light or the cells will die. This was a Eureka moment- has anyone tried to use this way to treat cancer in patients? The answer was no. Thus began our new treatment described in this book - Photodynamic Therapy - now an accepted way to treat certain cancers without many of the side effects of current treatment. This book describes the ups and downs of the 20 year route to FDA approval experienced by those starting with no knowledge of cancer nor how the FDA is intimately involved in the clinical aspects of a new treatment." Thomas J. Dougherty, PhD from The Circuitous Route By a Group of Novices to a New FDA Approved Cancer Therapy: How did we do this?

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