senescence

简明释义

英[sɪˈnesns]美[sɪˈnesns]

n. 衰老

英英释义

单词用法

同义词

反义词

例句

1.He calls the approach Strategies for Engineered Negligible Senescence (SENS).

他把这种方法称为掌控可忽略衰老的战略(SENS)。

2.Inhibition of telomerase activity leads the cells to senescence and death.

端粒酶活性的抑制可以导致细胞的衰老和死亡。

3.Calcium apparently ACTS in a similar manner as some of the hormones that defer senescence.

钙这种明显的作用同某些激素能够延缓衰老的作用方式相似。

4.Surprisingly, we find a secreted protein, IGFBP7, has a central role in BRAFV600E-mediated senescence and apoptosis.

令人惊讶的是，我们发现一个分泌蛋白，IGFBP7在BRAFV600E介导的衰老和凋亡中发挥核心作用。

5.Modern western medicine has been in a controversy on the mechanism of senescence, and made no breakthrough in therapy.

目前，现代医学对脑衰老机理的认识尚处于争论之中，治疗方面亦未找到有效方法。

6.Ethylene production and its function are of important in the study of cut flower senescence.

乙烯的生成及其作用是切花衰老研究中十分重要的内容。

7.The potential action of active oxygen metabolism in wheat leaf senescence process was discussed.

并讨论了活性氧代谢在小麦叶片衰老过程中的可能作用。

8.Our mothers, during the progress that we are busy for somewhat gradually walk to inevitable senescence.

我们的母亲，在我们为什么而忙碌的过程中慢慢地走向了必然的衰老。

9.The study of cellular senescence has revealed important insights into aging processes.

细胞衰老的研究揭示了关于衰老过程的重要见解。

10.Researchers are investigating how senescence affects tissue regeneration.

研究人员正在调查衰老如何影响组织再生。

11.The accumulation of senescence cells in the body can lead to various age-related diseases.

体内衰老细胞的积累可能导致各种与年龄相关的疾病。

12.Understanding the mechanisms of senescence could lead to new anti-aging therapies.

理解衰老的机制可能会导致新的抗衰老疗法。

13.In plants, senescence is a crucial process that leads to leaf yellowing and dropping.

在植物中，衰老是一个关键过程，导致叶子变黄和脱落。

作文

In the study of biology, the term senescence refers to the process of aging at both the cellular and organismal levels. It is a natural phenomenon that affects all living beings, leading to a gradual decline in physiological functions and an increased susceptibility to diseases. Understanding senescence is crucial for various fields, including medicine, agriculture, and gerontology, as it offers insights into the aging process and potential interventions to enhance longevity and quality of life. At the cellular level, senescence is characterized by a state where cells lose their ability to divide and function effectively. This can occur due to various factors such as DNA damage, oxidative stress, and telomere shortening. As cells undergo senescence, they often enter a phase known as 'senescent cell accumulation,' which can contribute to tissue dysfunction and the progression of age-related diseases. For instance, the presence of senescent cells has been linked to chronic inflammation, a hallmark of many age-related conditions, including arthritis, cardiovascular diseases, and even cancer. On an organismal level, senescence manifests through various signs, such as decreased physical performance, cognitive decline, and changes in skin elasticity. These changes can significantly impact an individual's quality of life, making it essential to explore ways to mitigate the effects of senescence. Research has shown that lifestyle factors, such as a balanced diet, regular exercise, and mental stimulation, can play a vital role in delaying the onset of senescence and promoting healthy aging. Moreover, advancements in medical science have opened new avenues for addressing senescence. For example, scientists are investigating the use of senolytic drugs, which selectively target and eliminate senescent cells from the body. Preliminary studies have shown promising results, suggesting that removing these cells can improve healthspan and potentially extend lifespan. This research highlights the importance of understanding senescence not only as a biological process but also as a target for therapeutic interventions. In agriculture, senescence plays a critical role in crop production and management. Plants also undergo senescence, which affects their growth and yield. Understanding the mechanisms behind plant senescence can help farmers develop strategies to enhance crop resilience and productivity. For instance, manipulating the genes associated with senescence can lead to improved shelf life and nutritional quality of fruits and vegetables, benefiting both producers and consumers. In conclusion, senescence is a complex and multifaceted process that impacts all living organisms. By studying senescence, we can gain valuable insights into the aging process and develop strategies to promote healthier, longer lives. Whether through medical advancements or agricultural innovations, understanding senescence is essential for improving the well-being of individuals and communities alike. As we continue to explore this fascinating area of research, we may uncover new ways to combat the effects of aging and enhance the quality of life for future generations.

在生物学研究中，术语senescence指的是细胞和有机体层面的衰老过程。这是一个影响所有生物的自然现象，导致生理功能逐渐下降以及对疾病的易感性增加。理解senescence对于医学、农业和老年学等多个领域至关重要，因为它提供了关于衰老过程和潜在干预措施的见解，以增强寿命和生活质量。 在细胞层面，senescence的特征是细胞失去有效分裂和功能的能力。这可能由于多种因素引起，如DNA损伤、氧化压力和端粒缩短。随着细胞经历senescence，它们通常进入一种称为“衰老细胞积累”的阶段，这可能导致组织功能障碍和与年龄相关疾病的进展。例如，衰老细胞的存在与慢性炎症有关，这是许多与年龄相关的疾病的标志，包括关节炎、心血管疾病甚至癌症。 在有机体层面，senescence通过各种迹象表现出来，如身体表现下降、认知能力下降和皮肤弹性变化。这些变化会显著影响个体的生活质量，因此探索减轻senescence影响的方法至关重要。研究表明，生活方式因素，如均衡饮食、定期锻炼和心理刺激，可以在延缓senescence的发生和促进健康老龄化方面发挥重要作用。 此外，医学科学的进步为解决senescence问题开辟了新的途径。例如，科学家正在研究使用选择性靶向和消除衰老细胞的药物（即衰老细胞靶向药物）。初步研究显示出良好的结果，表明去除这些细胞可以改善健康寿命并可能延长寿命。这项研究突显了理解senescence的重要性，不仅作为一种生物过程，还作为治疗干预的目标。 在农业中，senescence在作物生产和管理中也发挥着关键作用。植物也会经历senescence，这会影响它们的生长和产量。理解植物senescence背后的机制可以帮助农民制定提高作物抗逆性和生产力的策略。例如，操控与senescence相关的基因可以改善水果和蔬菜的保质期和营养质量，造福生产者和消费者。 总之，senescence是一个复杂而多面的过程，影响所有生物体。通过研究senescence，我们可以获得关于衰老过程的宝贵见解，并制定促进健康、长寿的策略。无论是通过医学进步还是农业创新，理解senescence对于改善个人和社区的福祉至关重要。随着我们继续探索这一迷人的研究领域，我们可能会发现新的方法来对抗衰老的影响，增强未来几代人的生活质量。