sporozoite

简明释义

英[ˌspɒrə(ʊ)ˈzəʊaɪt;ˌspɔː-]美[ˌspoʊrəˈzoʊaɪt]

n. [无脊椎] 孢子体；孢子小体

英英释义

单词用法

同义词

反义词

例句

1.An infected female Anopheles mosquito's saliva contains great Numbers of the form of the parasite known as the sporozoite.

在感染了的雌疟蚊的唾液里，含有大量叫作子孢子的疟原虫。

2.Objective To construct the prokaryotic expression vector of the sporozoite surface antigen gene of Eimeria tenella GZ strain and expression in Escherichia coli.

目的构建柔嫩艾美耳球虫子孢子表面抗原原核表达载体，并且在大肠杆菌中表达。

3.Objective To construct the prokaryotic expression vector of the sporozoite surface antigen gene of Eimeria tenella GZ strain and expression in Escherichia coli.

目的构建柔嫩艾美耳球虫子孢子表面抗原原核表达载体，并且在大肠杆菌中表达。

4.The sporozoite stage is crucial for the transmission of malaria from mosquitoes to humans.

孢子体阶段对疟疾从蚊子传播到人类至关重要。

5.When a mosquito bites, it releases the sporozoite into the bloodstream of its host.

当蚊子叮咬时，它将孢子体释放到宿主的血液中。

6.In the liver, the sporozoite transforms into a merozoite, which then enters the bloodstream.

在肝脏中，孢子体转变为裂殖子，然后进入血液。

7.Researchers are studying how the sporozoite invades liver cells to improve malaria treatments.

研究人员正在研究孢子体如何侵入肝细胞，以改善疟疾治疗。

8.The life cycle of Plasmodium begins when a mosquito injects the sporozoite into a human host.

疟原虫的生命周期始于蚊子将孢子体注入人类宿主。

作文

The life cycle of certain parasitic organisms is a fascinating subject in the field of biology. One of the key stages in this cycle involves the formation of a specialized cell known as a sporozoite. A sporozoite is a motile spore-like stage that is crucial for the transmission of parasites, particularly those belonging to the phylum Apicomplexa, such as Plasmodium, which causes malaria. Understanding the role of the sporozoite in the life cycle of these parasites can provide insights into potential targets for treatment and prevention strategies.In the case of Plasmodium, the sporozoite is produced in the salivary glands of female Anopheles mosquitoes. When an infected mosquito bites a human, it injects the sporozoite into the bloodstream. This stage is characterized by its ability to move quickly through the bloodstream to reach the liver, where it undergoes further development. The journey of the sporozoite from the mosquito to the human body is a critical step in the transmission of malaria, highlighting the importance of understanding this stage in the parasite's life cycle.Once the sporozoite reaches the liver, it invades liver cells and begins to multiply asexually, forming thousands of merozoites. This phase is often asymptomatic, allowing the parasite to replicate undetected. After a period of time, the liver cells burst, releasing merozoites into the bloodstream, which then invade red blood cells and continue the cycle of infection. The ability of the sporozoite to successfully navigate through the human host and establish infection is a remarkable example of adaptation and survival.Research on the sporozoite stage has opened up new avenues for malaria control. For instance, scientists are exploring vaccines that target the sporozoite stage to prevent infection before it can take hold in the liver. The RTS,S/AS01 vaccine, which has shown promise in clinical trials, works by eliciting an immune response specifically against the sporozoite stage of the Plasmodium parasite. By preventing the sporozoite from successfully infecting liver cells, the vaccine aims to reduce the incidence of malaria in endemic regions.In addition to its role in malaria, the concept of the sporozoite is relevant in the study of other diseases caused by Apicomplexan parasites, such as Toxoplasma gondii and Cryptosporidium species. Each of these organisms has a unique life cycle, but the sporozoite stage remains a critical point of intervention for researchers aiming to disrupt transmission and reduce disease burden.In conclusion, the sporozoite represents a pivotal stage in the life cycle of many parasitic organisms. Its ability to facilitate transmission and establish infection underscores the need for continued research in this area. By focusing on the sporozoite, scientists can develop innovative strategies to combat diseases like malaria, ultimately contributing to better public health outcomes worldwide.

某些寄生生物的生命周期是生物学领域中一个引人入胜的主题。这个周期中的一个关键阶段涉及一种称为孢子虫子孢子的特化细胞的形成。孢子虫子孢子是一种运动性孢子状阶段，对于寄生虫的传播至关重要，特别是那些属于阿米巴门（Apicomplexa）类的寄生虫，如引起疟疾的疟原虫（Plasmodium）。理解孢子虫子孢子在这些寄生虫生命周期中的作用可以为治疗和预防策略提供潜在的靶点。以疟原虫为例，孢子虫子孢子是在雌性按蚊的唾液腺中产生的。当一只感染的蚊子叮咬人类时，它将孢子虫子孢子注入血液中。这个阶段的特点是它能够迅速在血液中移动，以到达肝脏，在那里它会进行进一步的发展。孢子虫子孢子从蚊子到人体的旅程是疟疾传播的关键步骤，这突显了理解这一阶段在寄生虫生命周期中的重要性。一旦孢子虫子孢子到达肝脏，它便侵入肝细胞并开始无性繁殖，形成数千个裂殖子。这一阶段通常是无症状的，使得寄生虫能够在未被发现的情况下复制。在一段时间后，肝细胞破裂，将裂殖子释放到血流中，然后这些裂殖子侵入红血球并继续感染循环。孢子虫子孢子成功穿越人类宿主并建立感染的能力是适应和生存的一个显著例子。对孢子虫子孢子阶段的研究开辟了新的疟疾控制途径。例如，科学家们正在探索针对孢子虫子孢子阶段的疫苗，以在感染能够扎根于肝脏之前预防感染。RTS,S/AS01疫苗在临床试验中显示出希望，旨在引发针对疟原虫的孢子虫子孢子阶段的免疫反应。通过防止孢子虫子孢子成功感染肝细胞，该疫苗旨在减少地方性地区的疟疾发生率。除了在疟疾中的作用外，孢子虫子孢子的概念在研究其他由阿米巴门寄生虫引起的疾病时也具有相关性，例如弓形虫（Toxoplasma gondii）和隐孢子虫（Cryptosporidium）物种。每种生物都有其独特的生命周期，但孢子虫子孢子阶段仍然是研究人员旨在干扰传播和减少疾病负担的关键干预点。总之，孢子虫子孢子代表了许多寄生生物生命周期中的一个关键阶段。它促进传播和建立感染的能力强调了在这一领域持续研究的必要性。通过关注孢子虫子孢子，科学家可以开发创新策略来对抗像疟疾这样的疾病，最终为全球公共卫生成果做出贡献。