首页> 外文会议>Photodynamic Therapy of Cancer >Utilization of 5-aminolevulinic acid in the photodynamic therapy of tumors: biochemical and photobiological aspects
【24h】

Utilization of 5-aminolevulinic acid in the photodynamic therapy of tumors: biochemical and photobiological aspects

机译:5-氨基乙酰丙酸在肿瘤的光动力治疗中的应用:生化和光生物学方面

获取原文
获取原文并翻译 | 示例

摘要

Abstract: Inherent in both plants and animals is the natural porphyrin, Protoporphyrin IX (Pp). Although Pp does not appear to have any intrinsic biological activity, it is a potent natural photosensitizer. When activated with ultraviolet or visible light, this photosensitizer can induce significant photodynamic effects on tissues, cells, subcellular elements, and macromolecules via the production of singlet oxygen. The biosynthesis of endogenous Pp is under strict enzymatic control. It is possible to bypass a rate controlling step and induce large, transient concentrations of Pp by the addition of exogenous 5- aminolevulinic acid (ALA). ALA may be administered systemically or topically. Much larger amounts of Pp are produced in certain types of tumor tissue than in adjacent normal tissue. Topically applied ALA can be used to treat a variety of skin lesions, including actinic keratosis, basal cell carcinomas and psoriasis. !16
机译:摘要:植物和动物固有的天然卟啉原卟啉IX(Pp)。尽管Pp似乎没有任何固有的生物活性,但它是一种有效的天然光敏剂。当用紫外线或可见光激活时,这种光敏剂可通过产生单线态氧来诱导对组织,细胞,亚细胞成分和大分子的显着光动力效应。内源Pp的生物合成受到严格的酶促控制。通过添加外源的5-氨基乙酰丙酸(ALA),可以绕开速率控制步骤并诱导大的瞬时Pp浓度。 ALA可以全身或局部给药。在某些类型的肿瘤组织中产生的Pp数量要比在邻近的正常组织中大得多。局部应用的ALA可用于治疗多种皮肤病变,包括光化性角化病,基底细胞癌和牛皮癣。 !16

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号