fimbriae

简明释义

英[ˈfɪmbrɪiː]美[ˈfɪmbrɪiː]

n. 菌毛；伞毛（fimbria 的复数）

英英释义

单词用法

同义词

反义词

例句

1.K88 fimbriae is one of the major colonization factors associated with porcine neonatal and post-weaning diarrhea caused by enterotoxigenic Escherichia coli (ETEC).

K 88菌毛介导产肠毒素性大肠杆菌在小肠上皮细胞的粘附，是引起新生仔猪腹泻的主要致病因子之一。

2.K88 fimbriae is one of the major colonization factors associated with porcine neonatal and post-weaning diarrhea caused by enterotoxigenic Escherichia coli (ETEC).

K 88菌毛介导产肠毒素性大肠杆菌在小肠上皮细胞的粘附，是引起新生仔猪腹泻的主要致病因子之一。

3.Enlarged 21 times: This colourful flower is actually of fimbriae, a fringe of tissue, of a Fallopian tube.

放大21倍：这朵鲜艳的花朵实际上是输卵管伞毛，一种边缘组织。

4.The fringelike fimbriae transport ovulated eggs from the ovarian surface to the infundibulum.

状的伞将排出的卵，从卵巢表面运送到漏斗。

5.The pathogenesis of ETEC is strongly related to adhesive fimbriae and enterotoxin.

ETEC的致病作用与其具有粘附性菌毛和产肠毒素密切相关，二者缺一不可。

6.Currently, the function of SEF14 fimbriae is still being analysised.

目前，关于SEF14菌毛的功能仍在探讨之中。

7.The bacteria use their fimbriae to adhere to the surfaces of host tissues.

细菌利用它们的纤毛附着在宿主组织的表面。

8.In some species, fimbriae play a crucial role in biofilm formation.

在某些物种中，纤毛在生物膜形成中起着至关重要的作用。

9.The presence of fimbriae can enhance the pathogenicity of certain bacteria.

某些细菌的纤毛的存在可以增强其致病性。

10.Researchers are studying how fimbriae contribute to antibiotic resistance.

研究人员正在研究纤毛如何导致抗生素耐药性。

11.The structure of fimbriae allows bacteria to cling tightly to surfaces.

细菌的纤毛结构使其能够紧紧粘附在表面上。

作文

In the fascinating world of microbiology, the study of bacteria reveals many intricate structures that play crucial roles in their survival and functionality. One such structure is known as fimbriae, which are hair-like appendages found on the surface of many bacteria. These slender projections are primarily composed of protein and serve essential functions, particularly in the adherence of bacteria to various surfaces. Understanding the role of fimbriae in bacterial behavior can provide insights into how infections occur and how bacteria interact with their environment. The primary function of fimbriae is to facilitate attachment. For instance, in pathogenic bacteria, fimbriae enable them to cling to host tissues, which is a critical first step in establishing an infection. This adhesion is not merely a passive process; it involves complex interactions between the bacterial surface and host cells. The ability to adhere to surfaces enhances the bacteria's chances of survival in hostile environments, such as the human body, where they face the immune system and other competing microorganisms. Moreover, fimbriae can also play a role in biofilm formation. Biofilms are communities of microorganisms that attach to surfaces and are encased in a protective matrix. The presence of fimbriae allows bacteria to aggregate and form these structured communities, which can be found on medical devices, natural surfaces, and even within the human body. Biofilms are notoriously difficult to eradicate due to their resistance to antibiotics and the immune response, making the study of fimbriae vital for developing strategies to combat persistent infections. In addition to their role in adhesion and biofilm formation, fimbriae may also have implications in the motility of bacteria. While they are not flagella and do not provide movement in the same way, fimbriae can assist in the movement of bacteria across surfaces through a process known as 'twitching.' This type of motility allows bacteria to explore their environment more effectively, enhancing their ability to find nutrients and evade threats. Furthermore, the structure of fimbriae is fascinating in itself. They vary in length and density depending on the type of bacteria and their environmental conditions. Some bacteria possess numerous fimbriae, while others may have only a few. The variations in fimbriae structure can influence the overall virulence of a bacterial strain, contributing to its ability to cause disease. The understanding of fimbriae extends beyond basic microbiology; it has significant implications in medicine and biotechnology. For example, researchers are exploring ways to inhibit the function of fimbriae as a potential strategy for preventing bacterial infections. By blocking the adhesion process, it may be possible to reduce the incidence of infections associated with medical devices or surgical procedures. In conclusion, fimbriae are more than just simple cellular appendages; they are vital components that contribute to the survival and pathogenicity of bacteria. Their roles in adhesion, biofilm formation, and motility highlight the complexity of bacterial life and their interactions with the environment. As we continue to study fimbriae, we gain valuable knowledge that could lead to innovative approaches in treating bacterial infections and improving public health.

在微生物学的迷人世界中，细菌的研究揭示了许多复杂的结构，这些结构在它们的生存和功能中发挥着至关重要的作用。其中一个这样的结构被称为纤毛，它是许多细菌表面发现的类毛状附属物。这些细长的突起主要由蛋白质组成，并在细菌附着于各种表面时发挥重要功能。理解纤毛在细菌行为中的作用可以提供关于感染如何发生以及细菌如何与环境互动的见解。 纤毛的主要功能是促进附着。例如，在致病细菌中，纤毛使它们能够紧紧粘附于宿主组织，这是建立感染的关键第一步。这种附着不仅仅是一个被动过程；它涉及细菌表面与宿主细胞之间的复杂相互作用。能够附着于表面增强了细菌在敌对环境中生存的机会，例如在人体内，它们面临免疫系统和其他竞争性微生物的挑战。 此外，纤毛还可以在生物膜形成中发挥作用。生物膜是附着在表面上的微生物群落，并被保护性基质包裹。纤毛的存在使细菌能够聚集并形成这些结构化的群落，这些群落可以在医疗设备、自然表面甚至人体内找到。生物膜因其对抗生素和免疫反应的抵抗力而臭名昭著，因此对纤毛的研究对于开发对抗持久感染的策略至关重要。 除了在附着和生物膜形成中的作用外，纤毛在细菌运动方面也可能具有影响。虽然它们不是鞭毛，不能以相同的方式提供运动，但纤毛可以通过一种称为“抽动”的过程来帮助细菌在表面上移动。这种类型的运动使细菌能够更有效地探索其环境，从而增强其寻找营养和逃避威胁的能力。 此外，纤毛的结构本身也令人着迷。根据细菌的类型和环境条件，它们的长度和密度各不相同。一些细菌拥有大量的纤毛，而另一些细菌则只有少数。纤毛结构的变化可以影响细菌株的整体毒力，从而影响其致病能力。 对纤毛的理解超越了基础微生物学；它在医学和生物技术中具有重要意义。例如，研究人员正在探索抑制纤毛功能的方法，作为预防细菌感染的潜在策略。通过阻止附着过程，可能有助于减少与医疗设备或外科手术相关的感染发生率。 总之，纤毛不仅仅是简单的细胞附属物；它们是细菌生存和致病性的关键组成部分。它们在附着、生物膜形成和运动中的作用突显了细菌生命的复杂性及其与环境的相互作用。随着我们继续研究纤毛，我们获得的宝贵知识可能会导致治疗细菌感染和改善公共卫生的创新方法。