加拿大温哥华消息:温哥华一研究组制成新一代的卟啉,可能改变癌的光动力学疗法的最大弊端,即病人的皮肤对日光的敏感性。光动力学疗法(PDT)是用卟啉使正常组织对可见光敏感。当接触低功率激光束时,被肿瘤吸收的卟啉释放出高毒性氧,破坏邻近的细胞。不列颠哥伦比亚大学微生物学教授Julia Levy在1987年卫生会议上说,PDT是治 Vancouver, Canada: A research group in Vancouver has created a new generation of porphyrins that may change the biggest drawback of photodynamic therapy for cancer, which is the sensitivity of the patient’s skin to sunlight. Photodynamic therapy (PDT) uses porphyrin to make normal tissue sensitive to visible light. When exposed to a low-power laser beam, the porphyrins absorbed by the tumor release highly toxic oxygen, destroying adjacent cells. Julia Levy, professor of microbiology at the University of British Columbia, said at the 1987 Health Conference that PDT is