The effect of Brucella abortus on glial activation and cell death in adult male rat's hippocampus

IF 3.5 3区医学 Q2 NEUROSCIENCES Brain Research Bulletin Pub Date : 2024-08-31 DOI:10.1016/j.brainresbull.2024.111061

Mobina Fathi , Kimia Vakili , Ibrahim Mohammadzadeh , Mojtaba Sani , Yaser Khakpour , Helia Azimi , Mohsen Norouzian , Meysam Hassani Moghaddam , Fariba Khodagholi , Shayan Sadrinasab , Helia Karami Gilavand , Mohammad Javad Ebrahimi , Maral Moafi , Amirreza Beirami , Maral Hasanzadeh , Reza Bahar , Amir‑Hossein Bayat , Saeed Alamian , Abbas Aliaghaei

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Abstract

A zoonotic disease called brucellosis can cause flu-like symptoms and heart inflammation. The bacteria responsible for this disease can also enter the brain, causing a condition called neurobrucellosis that can result in long-term neurological problems. In this study, researchers aimed to determine the changes in the hippocampal cells of rats infected with Brucella. For the study, 24 adult male albino rats were inoculated with 1 × 10⁶ CFU Brucella abortus 544. The rats were then deeply anesthetized, and their hippocampus samples were taken for stereological, histological, and molecular studies. The results showed that the infected rats had increased microgliosis and astrogliosis. Furthermore, a high level of caspase-3 in their hippocampal tissue indicated their susceptibility to apoptosis. Additionally, there was a decrease in expression of Ki67, which further supported this. Sholl's analysis confirmed a significant failure in glial morphology. The study demonstrated that the pathogen has the ability to destroy the hippocampus and potentially affect its normal physiology. However, more research is needed to clarify various aspects of neurobrucellosis.

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流产布鲁氏菌对成年雄性大鼠海马神经胶质激活和细胞死亡的影响

一种名为布鲁氏菌病的人畜共患病可导致类似流感的症状和心脏炎症。导致这种疾病的细菌还能进入大脑，引起一种叫做神经布鲁氏菌病的疾病，可导致长期的神经问题。在这项研究中，研究人员旨在确定感染布鲁氏菌的大鼠海马细胞的变化。在研究中，研究人员给 24 只成年雄性白化大鼠接种了 1 × 106 CFU 的流产布鲁氏菌 544。然后对大鼠进行深度麻醉，并采集其海马样本进行立体学、组织学和分子学研究。结果显示，受感染的大鼠小胶质细胞和星形胶质细胞增多。此外，海马组织中的 Caspase-3 水平较高，表明它们容易发生细胞凋亡。此外，Ki67 的表达减少也进一步证实了这一点。Sholl 的分析证实了神经胶质形态的显著衰退。这项研究表明，病原体有能力破坏海马，并可能影响其正常生理机能。然而，还需要更多的研究来阐明神经布鲁氏菌病的各个方面。

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来源期刊

Brain Research Bulletin 医学-神经科学

CiteScore

6.90

自引率

2.60%

发文量

253

审稿时长

67 days

期刊介绍： The Brain Research Bulletin (BRB) aims to publish novel work that advances our knowledge of molecular and cellular mechanisms that underlie neural network properties associated with behavior, cognition and other brain functions during neurodevelopment and in the adult. Although clinical research is out of the Journal''s scope, the BRB also aims to publish translation research that provides insight into biological mechanisms and processes associated with neurodegeneration mechanisms, neurological diseases and neuropsychiatric disorders. The Journal is especially interested in research using novel methodologies, such as optogenetics, multielectrode array recordings and life imaging in wild-type and genetically-modified animal models, with the goal to advance our understanding of how neurons, glia and networks function in vivo.