xanthine

简明释义

英[ˈzænθiːn]美[ˈzænθɪn]

n. 黄嘌呤；黄质

英英释义

单词用法

同义词

反义词

例句

1.The metabolism of caffeine involves its conversion to xanthine, which is a natural stimulant.

咖啡因的代谢涉及其转化为黄嘌呤，这是一种天然兴奋剂。

2.In the human body, xanthine can be further oxidized to uric acid.

在人体内，黄嘌呤可以进一步氧化为尿酸。

3.Researchers are studying the effects of xanthine derivatives on cardiovascular health.

研究人员正在研究黄嘌呤衍生物对心血管健康的影响。

4.Certain medications can increase the levels of xanthine in the bloodstream.

某些药物可以增加血液中黄嘌呤的水平。

5.The presence of xanthine in urine can indicate certain metabolic disorders.

尿液中存在黄嘌呤可能表明某些代谢紊乱。

作文

Xanthine is a naturally occurring purine base that plays a crucial role in the metabolism of nucleic acids. It is an intermediate product in the catabolism of purines, which are vital components of DNA and RNA. Understanding the significance of xanthine (黄嘌呤) in biological processes is essential for various fields such as biochemistry, medicine, and nutrition. In the human body, xanthine (黄嘌呤) is produced from the breakdown of adenine and guanine, two important purine nucleotides. The process involves several enzymatic reactions, where xanthine oxidase converts xanthine (黄嘌呤) into uric acid, a waste product that is excreted in urine. This transformation is significant because elevated levels of uric acid can lead to conditions such as gout, a type of arthritis characterized by painful inflammation in the joints. Therefore, understanding how xanthine (黄嘌呤) fits into this metabolic pathway can provide insights into managing and preventing such health issues. Moreover, xanthine (黄嘌呤) is also important in the world of pharmacology. Certain drugs, such as theophylline, are derived from xanthine (黄嘌呤) and are used to treat respiratory diseases like asthma and chronic obstructive pulmonary disease (COPD). These medications work by relaxing the muscles around the airways, making it easier for patients to breathe. Understanding the structure and function of xanthine (黄嘌呤) can help researchers develop new therapeutic agents that target similar pathways in the body. In addition to its medical significance, xanthine (黄嘌呤) is also found in various foods and beverages. For instance, it is present in coffee, tea, and chocolate, which are popular sources of caffeine. Caffeine is a stimulant that affects the central nervous system and is known for its ability to enhance alertness and reduce fatigue. The metabolism of caffeine in the body involves its conversion into xanthine (黄嘌呤) and other metabolites, highlighting the interconnectedness of these compounds in dietary sources. Furthermore, research has shown that xanthine (黄嘌呤) may have antioxidant properties. Antioxidants are substances that help protect cells from damage caused by free radicals, which are unstable molecules that can lead to oxidative stress and contribute to various diseases, including cancer and cardiovascular disorders. By studying the potential benefits of xanthine (黄嘌呤) as an antioxidant, scientists hope to uncover new strategies for disease prevention and health promotion. In conclusion, xanthine (黄嘌呤) is not just a simple compound; it is a key player in numerous biological processes that impact human health. Its role in purine metabolism, pharmacology, nutrition, and antioxidant activity demonstrates its importance across multiple disciplines. As research continues to evolve, our understanding of xanthine (黄嘌呤) will likely expand, leading to new discoveries and applications that could benefit society as a whole.