云克是什么药？

中文版：

云克，也称为云克注射液，是一种用于治疗类风湿性关节炎和其他自身免疫性疾病的药物。它属于一种特殊的药物类别，被称为免疫调节剂。云克的主要成分是一种名为锝[99Tc]的放射性同位素，这种同位素与一种叫做亚甲基二膦酸盐的化合物结合，形成了一种独特的药物。

云克的作用机制在于其能够调节人体的免疫反应，减少过度的免疫反应，从而减轻类风湿性关节炎等疾病的症状。通过抑制免疫细胞的活性，云克可以减少炎症介质的释放，从而缓解关节疼痛、肿胀和僵硬等症状。

除了类风湿性关节炎，云克还可用于治疗其他与免疫反应相关的疾病，如强直性脊柱炎、系统性红斑狼疮等。然而，由于云克含有放射性同位素，使用时需要严格控制剂量和用药时间，以确保患者的安全。

英文版：

What is Yunke?

Yunke, also known as Yunke Injection, is a medication used to treat rheumatoid arthritis and other autoimmune diseases. It belongs to a special category of drugs known as immunomodulators. The main component of Yunke is a radioactive isotope called Technetium-99m (Tc-99m), which is combined with a compound called methylene diphosphonate to form a unique medication.

The mechanism of Yunke lies in its ability to regulate the immune response of the body, reducing excessive immune reactions and thereby alleviating the symptoms of diseases such as rheumatoid arthritis. By inhibiting the activity of immune cells, Yunke can reduce the release of inflammatory mediators, relieving symptoms such as joint pain, swelling, and stiffness.

Apart from rheumatoid arthritis, Yunke can also be used to treat other diseases related to immune responses, such as ankylosing spondylitis and systemic lupus erythematosus. However, due to the presence of a radioactive isotope, the dose and duration of use need to be strictly controlled to ensure patient safety.