photosensitizer

简明释义

英[ˌfoʊtəʊˈsɛntɪˌzaɪzər]美[ˌfoʊtəʊˈsɛntɪˌzaɪzər]

n. [化学] 光敏剂；[感光] 感光剂

英英释义

单词用法

同义词

反义词

例句

1.The addition of photosensitizer could improve the efficiency of photoinitiation.

光敏剂的加入可提高光引发效率；

2.This provides theoretical reference for the further synthesis of efficient DSSC photosensitizer.

这为进一步合成高效的DSSC光敏剂提供了理论参考。

3.The experimental results showed that the photosensitizer could obviously affect the crosslinking process.

实验证明：光敏剂对交联有着显著的影响；

4.Photophysical processes of the chlorophyll derivative photosensitizer CPD3 were investigated under two-photon excitation (TPE) induced by a femtosecond pulse laser.

用飞秒脉冲激光，研究了二氢卟吩光敏剂CPD3分子在双光子激发(TPE)下的光物理过程。

5.PC Series photo catalyst was used for photosensitizer in the farm PE film.

PC系列光敏催化剂用于快速降解农用地膜。

6.Milk is especially susceptible because the riboflavin (vitamin B2) it contains ACTS as a photosensitizer, says Donald McMahon, PhD, an expert in dairy foods processing at Utah State University.

来自犹他州大学的日常食物处理专家DonaldMcMahon博士说到，牛奶是一种易受影响的物质，因为它含有的核黄素(维生素b2)是个光敏性物质。

7.Methods. A single PDT treatment was administered to healthy Wistar rats at photosensitizer and light doses known to be effective in athymic rats bearing human breast cancer metastases.

方法：单纯的PDT疗法作用于Wistar大鼠，所用的光敏剂和光量已证实对人乳腺癌转移的无胸腺大鼠有效。

8.In environmental applications, photosensitizers can help degrade pollutants under light exposure.

在环境应用中，光敏剂可以在光照下帮助降解污染物。

9.The effectiveness of a photosensitizer depends on its absorption spectrum.

一个光敏剂的有效性取决于其吸收光谱。

10.Researchers are investigating new photosensitizers to improve the efficiency of solar cells.

研究人员正在调查新的光敏剂以提高太阳能电池的效率。

11.A common photosensitizer used in dermatology is methylene blue for treating skin lesions.

在皮肤科常用的光敏剂是亚甲蓝，用于治疗皮肤损伤。

12.The use of a photosensitizer in photodynamic therapy can effectively target cancer cells.

在光动力疗法中使用光敏剂可以有效靶向癌细胞。

作文

In recent years, the field of medicine has seen significant advancements, particularly in the area of cancer treatment. Among these innovations, the use of photosensitizer (光敏剂) compounds has emerged as a promising approach to target and eliminate cancer cells. A photosensitizer is a substance that becomes activated by light exposure, leading to a chemical reaction that can destroy nearby cells. This property makes photosensitizers particularly useful in photodynamic therapy (PDT), a technique that harnesses the power of light to treat various forms of cancer.The mechanism of action for photosensitizers is quite fascinating. When these substances are introduced into the body, they preferentially accumulate in cancerous tissues. Once they have localized in the tumor, the patient is exposed to a specific wavelength of light. This light activates the photosensitizer, which then generates reactive oxygen species (ROS). These ROS are highly reactive and can damage cellular components, leading to cell death. The selectivity of this process allows for the targeted destruction of cancer cells while minimizing damage to surrounding healthy tissues, making PDT a less invasive option compared to traditional surgical methods.One of the key advantages of using photosensitizers in cancer treatment is their ability to enhance the effectiveness of other therapies. For instance, studies have shown that combining PDT with chemotherapy can lead to improved outcomes for patients. The photosensitizer can sensitize cancer cells to the effects of chemotherapy, making them more susceptible to the drugs. This synergistic effect not only increases the efficacy of treatment but also reduces the required doses of chemotherapy, potentially lowering the risk of side effects.Despite the benefits, there are challenges associated with the use of photosensitizers. One major issue is the limited penetration of light through biological tissues. This limitation restricts the effectiveness of PDT for deeper tumors, as the light may not reach the entire tumor mass. Researchers are actively working on developing new photosensitizers that can absorb different wavelengths of light, including those that penetrate deeper into tissues. Additionally, the development of advanced delivery systems to enhance the accumulation of photosensitizers in tumors is an area of ongoing research.Moreover, the choice of photosensitizer plays a crucial role in the success of PDT. Different photosensitizers have varying properties, such as their absorption spectra, toxicity levels, and stability. Selecting the appropriate photosensitizer for a specific type of cancer is essential for optimizing treatment outcomes. Furthermore, ongoing clinical trials are essential to evaluate the safety and efficacy of new photosensitizers and their combinations with other therapeutic modalities.In conclusion, the use of photosensitizers (光敏剂) in cancer treatment represents a significant advancement in the medical field. Their ability to selectively target cancer cells and enhance the efficacy of existing therapies holds great promise for improving patient outcomes. As research continues to evolve, we can expect to see more innovative applications of photosensitizers in oncology, paving the way for more effective and less invasive cancer treatments. The future of cancer therapy may very well depend on our ability to harness the power of light and the unique properties of photosensitizers.

近年来，医学领域取得了显著进展，特别是在癌症治疗方面。在这些创新中，使用光敏剂（photosensitizer）化合物作为靶向和消除癌细胞的有前途的方法逐渐浮出水面。光敏剂是一种在光照射下会被激活的物质，导致化学反应，从而可以破坏附近的细胞。这一特性使得光敏剂在光动力疗法（PDT）中尤为有用，这是一种利用光的力量治疗各种癌症的方法。光敏剂的作用机制非常迷人。当这些物质被引入体内时，它们会优先积累在癌性组织中。一旦它们在肿瘤中局部化，患者就会暴露在特定波长的光下。这种光激活光敏剂，然后生成活性氧物质（ROS）。这些ROS反应性强，可以损害细胞成分，导致细胞死亡。这一过程的选择性使得能够针对性地破坏癌细胞，同时最大限度地减少对周围健康组织的损害，使得PDT成为比传统手术方法更少侵入性的选择。使用光敏剂进行癌症治疗的一个主要优势是它们能够增强其他疗法的有效性。例如，研究表明，将PDT与化疗结合使用可以改善患者的治疗效果。光敏剂可以使癌细胞对化疗药物的作用更加敏感，从而提高其易感性。这种协同效应不仅提高了治疗的有效性，还减少了所需的化疗剂量，从而可能降低副作用的风险。尽管有这些好处，使用光敏剂也面临挑战。一个主要问题是光穿透生物组织的能力有限。这一限制使得PDT对较深肿瘤的有效性受到限制，因为光可能无法到达整个肿瘤质量。研究人员正在积极开发新的光敏剂，使其能够吸收不同波长的光，包括那些能更深入组织的光。此外，开发先进的递送系统以增强光敏剂在肿瘤中的积累也是当前研究的重点。此外，光敏剂的选择在PDT的成功中起着至关重要的作用。不同的光敏剂具有不同的特性，例如它们的吸收光谱、毒性水平和稳定性。为特定类型的癌症选择合适的光敏剂对于优化治疗结果至关重要。此外，持续的临床试验对于评估新光敏剂及其与其他治疗方式组合的安全性和有效性至关重要。总之，使用光敏剂（photosensitizer）进行癌症治疗代表了医学领域的一项重大进展。它们选择性靶向癌细胞并增强现有疗法的有效性的能力为改善患者结果带来了巨大希望。随着研究的不断发展，我们可以期待在肿瘤学中看到更多创新的光敏剂应用，为更有效和更少侵入性的癌症治疗铺平道路。癌症治疗的未来可能在于我们如何利用光的力量和光敏剂的独特特性。