相关实验视频
Updated: Jul 30, 2026
11:57
Electroporation of Mycobacteria
Published on: May 23, 2008
25.3K
电穿孔对Acanthamoeba多菌的作用
Palloma Santiago Prates Pessoa1, Raphael Barcelos1, Larissa Fagundes Pinto1
1Department of Ophthalmology and Visual Sciences, Paulista School of Medicine, São Paulo Hospital, Federal University of São Paulo, São Paulo, São Paulo, Brazil - UNIFESP.
PloS one
|February 25, 2025
概括
电疗治疗对阿坎萨摩巴角膜炎 (AK) 的治疗有希望. 电穿孔有效透Acanthamoeba囊和热,这表明这种严重的眼睛感染的潜在补充疗法.
科学领域:
- 微生物学 微生物学
- 眼科医生 眼科 眼科
- 生物物理学的生物物理.
背景情况:
- 阿坎塔莫巴菌种类导致阿坎塔莫巴菌角膜炎 (AK),一种严重的角膜感染.
- 目前的AK疗法面临着毒性和长时间治疗的挑战.
- 研究了电疗法,以增强分子透,以更快地消除寄生虫.
研究的目的:
- 评估电解疗法在透Acanthamoeba囊和trophozoites中的疗效.
- 评估电穿孔作为阿坎萨摩巴角膜炎的辅助疗法的潜力.
主要方法:
- 在体外暴露Acanthamoeba多菌 (ATCC® 30461TM) 囊和特洛福菌体的电场 (2,000V和2,500V).
- 使用特里班蓝色排除的可行性评估.
- 通过化染和光显微镜进行膜透分析.
- 使用尼康Eclipse TI-U显微镜和ImageJ软件进行图像采集和分析.
主要成果:
- 在2000V和2500V的电穿孔导致了Acanthamoeba trofhozoites (分别为55%和59%) 和囊 (分别为55%和59%) 的显著透.
- 观察到40-42%的热石和13-16%的囊在电解后丧失活力.
- 透率在测试电压下 (p ≤0.05) 没有显示热和囊之间的统计学意义.
结论:
- 测试的电压有效地透了Acanthamoeba囊和trophozoites.
- 电疗疗法显示出作为阿坎萨摩巴角膜炎标准治疗方法的补充方法的潜力.
- 进一步的研究可能会验证用于改善AK治疗结果的电疗法.
相关概念视频
01:18Surface Membrane Barriers
The skin and mucous membranes serve as the primary line of defense against pathogens by providing both physical and chemical protection. These barriers are essential in preventing the entry and establishment of microbes, thereby maintaining the integrity of the host.
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
The outer layer of the skin, the epidermis, is a robust barrier comprising layers of closely packed keratinized cells. This dense arrangement prevents microbes from penetrating the body. The periodic shedding of epidermal cells...
01:27Diversity of Protists II
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
01:28Amebiasis
Entamoeba histolytica, a protozoan parasite, is responsible for intestinal and extraintestinal amebiasis. Though a significant proportion of infections remain asymptomatic, approximately 50 million individuals annually are estimated to present with clinical disease, resulting in up to 100,000 deaths globally. The disease burden is disproportionately high in regions with lower socioeconomic status, such as parts of India, Africa, Mexico, and Latin America.Etiology and TransmissionThe infective...
01:25Inhibitors of Bacterial Protein Synthesis
Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...
01:15Antifungal Agents
Amphotericin B is a broad-spectrum antifungal agent that exploits structural differences between fungal and mammalian cell membranes. Its amphipathic structure—featuring a hydrophobic polyene-lactone ring and a hydrophilic region containing mycosamine and carboxylic acid groups—enables selective binding to ergosterol, a sterol predominantly found in fungal plasma membranes. This selective interaction underlies the drug’s antifungal activity, although weak binding to cholesterol contributes to...
01:15Anthelminthic Agents
Anthelmintic drugs differ significantly from antiparasitic therapies targeting protozoa, primarily due to differences in parasite biology. Whereas most protozoal treatments act on proliferating cells, anthelmintics are typically directed against mature, nonproliferative helminths. The therapeutic approach considers the helminth's reliance on neuromuscular coordination, glucose metabolism, and microtubular integrity for survival, reproduction, and localization within the host. Most anthelmintics...