首页> 外文会议>Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems VIII >Inhibition and regression of tumors in hamster DMBA model following laser microvascular targeting
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Inhibition and regression of tumors in hamster DMBA model following laser microvascular targeting

机译:激光微血管靶向对仓鼠DMBA模型中肿瘤的抑制和消退

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Abstract: Vascular targeting is a recent approach to cancer therapy that aims at damaging tumor vasculature to induce tumor cell hypoxia and subsequent cell death. Squamous cell cancer arises in the superficial mucosal and cutaneous epithelial layers, and tumor microvasculature therefore may be particularly well suited for targeting by selective photothermolysis. An initial evaluation of the effect of selective eradication of microvasculature on tumor development was undertaken here using the chemically-induced hamster cheek pouch model and a 585 nm pulsed dye laser. In a first group of 6 hamsters, progression of premalignant mucosal lesions was compared between control and laser treatment groups, and laser-induced regression of established tumors was evaluated. In a second group of 12 hamsters, the number of laser treatments required to produce complete regression of tumors of the buccal mucosa was determined. The effect of the laser on tumors appearing on the skin in these animals was also investigated. These experiments showed that laser treatment inhibited tumor development and caused complete regression of established tumors 10 mm$+3$/ or smaller. Photothermal microvascular targeting may be useful in treating dyplasia and early tumors of the upper aerodigestive tract and skin, with fewer adverse sequelae than existing modalities. !31
机译:摘要:血管靶向治疗是一种最近的癌症治疗方法,旨在破坏肿瘤血管,诱导肿瘤细胞缺氧并随后导致细胞死亡。鳞状细胞癌发生在浅层粘膜和皮肤上皮层中,因此肿瘤微脉管系统可能特别适合于通过选择性光热解进行靶向。在这里使用化学诱导的仓鼠脸颊袋模型和585 nm脉冲染料激光对微血管选择性根除对肿瘤发展的影响进行了初步评估。在第一组6只仓鼠中,比较了对照组和激光治疗组的恶性粘膜前病变的进展,并评估了激光诱导的已建立肿瘤的消退。在第二组12只仓鼠中,确定产生颊粘膜肿瘤完全消退所需的激光治疗的次数。还研究了激光对这些动物皮肤上出现的肿瘤的影响。这些实验表明,激光治疗抑制了肿瘤的发展,并完全消退了10 mm $ + 3 $ /或更小的已建立的肿瘤。光热微血管靶向可用于治疗增生和上呼吸道和皮肤的早期肿瘤,与现有方式相比,不良后遗症少。 !31

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