Photodynamic therapy for implanted VX2 tumor in rabbit brains

Fei Li, H. Feng, Jiangkai Lin, G. Zhu, Zhi Chen, Cong-yan Li
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Abstract

To evaluate the therapeutic effect and the safety of single photodynamic therapy (PDT) with hematoporphyrin derivative produced in China, 60 New Zealand adult rabbits with VX2 tumor implanted into the brain were divided randomly into non-PDT-group and PDT-group. 36 rabbits of the PDT-group were performed photodynamic therapy. The survival time, neurological deteriorations, intracranial pressure (ICP), histology, pathology, tumor volume and brain water content were measured. Other 12 rabbits were received hematoporphyrin derivative and light irradiation of the normal brain. The ICP, histology, pathology, and brain water content were measured. The result indicated that Simple PDT may elongate the average survival time of the rabbits with VX2 tumors significantly; kill tumor cells; cause transient brain edema and increase ICP, but it is safe to be used in treating brain tumor.
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兔脑植入VX2肿瘤的光动力治疗
为评价国产血卟啉衍生物单次光动力治疗(PDT)的疗效和安全性,将60只新西兰成年兔VX2脑瘤植入脑内,随机分为非PDT组和PDT组。pdt组36只兔进行光动力治疗。测定存活时间、神经功能恶化情况、颅内压(ICP)、组织病理学、肿瘤体积、脑含水量。其余12只兔接受血卟啉衍生物和正常脑光照射。测量颅内压、组织学、病理及脑含水量。结果表明,单纯PDT可明显延长VX2肿瘤兔的平均生存时间;杀死肿瘤细胞;引起短暂性脑水肿,增加颅内压,但用于治疗脑肿瘤是安全的。
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