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American Focus > Blog > Tech and Science > Cat Parasite Can Seriously Disrupt Brain Function, Study Suggests : ScienceAlert
Tech and Science

Cat Parasite Can Seriously Disrupt Brain Function, Study Suggests : ScienceAlert

Last updated: June 23, 2025 6:45 am
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Cat Parasite Can Seriously Disrupt Brain Function, Study Suggests : ScienceAlert
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In a groundbreaking new study, researchers have discovered that infection with the common parasite Toxoplasma gondii can have a serious impact on brain function in intermediate hosts, potentially including humans. The research, which involved studying mouse brain cells infected with the parasite, revealed that even a small number of infected neurons can disrupt neuronal communication.

The study focused on the release of extracellular vesicles (EVs) by infected neurons. These tiny packets of proteins, nucleic acids, and metabolites play a crucial role in intercellular communication. The researchers found that infected neurons released fewer EVs, leading to a disruption in communication between neurons and supporting glial cells, particularly astrocytes. This disruption can shift the brain’s neurochemical balance and have far-reaching consequences on brain health.

Toxoplasma gondii is known for its ability to manipulate the behavior of its hosts, including inducing changes that increase the likelihood of encountering its definitive host, cats. While some studies have questioned the direct link between the parasite and behavioral changes, the new research provides concrete evidence of the physical effects of infection on brain cells.

The researchers infected mouse neurons with Toxoplasma gondii and observed changes in EV production and content compared to uninfected neurons. They found that infected neurons produced altered EVs, leading to changes in astrocyte gene expression and immune signatures. This alteration also resulted in a decrease in a transporter responsible for removing excess glutamate from the brain, which is linked to seizures and neural damage associated with severe cases of toxoplasmosis.

The prevalence of Toxoplasma gondii infection in humans is surprisingly high, with rates reaching up to 80 percent in some parts of the world. While most people may never experience symptoms, certain populations, such as infants, elderly individuals, and those with weakened immune systems, are at risk of complications from the infection. Prevention measures such as thorough cooking of meat, washing vegetables, and practicing good hygiene can help reduce the risk of infection.

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The findings of this research, published in PLOS Pathogens, highlight the need for further study on the impact of Toxoplasma gondii on brain health. Understanding how the parasite affects neuronal communication and brain function may lead to new strategies for protecting vulnerable populations. By enhancing the brain’s natural defenses against infection, we may be able to better safeguard against the potential neurological and behavioral consequences of Toxoplasma gondii. The field of artificial intelligence (AI) is rapidly advancing, with new developments and applications emerging on a regular basis. From self-driving cars to virtual assistants, AI is transforming the way we live and work. One area that has seen significant growth in recent years is machine learning, a subset of AI that focuses on the development of algorithms that can learn from and make predictions or decisions based on data.

Machine learning algorithms are designed to analyze large datasets and identify patterns that can be used to make predictions or decisions. These algorithms are trained using labeled data, which consists of input-output pairs that allow the algorithm to learn how to make accurate predictions. Once the algorithm has been trained, it can be used to make predictions on new, unlabeled data.

There are several different types of machine learning algorithms, each with its own strengths and weaknesses. One of the most commonly used types of machine learning is supervised learning, where the algorithm is trained on labeled data and then used to make predictions on new data. Another type of machine learning is unsupervised learning, where the algorithm is trained on unlabeled data and must find patterns or structure in the data on its own.

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One of the key benefits of machine learning is its ability to automate tasks that would be time-consuming or impossible for humans to do manually. For example, machine learning algorithms can be used to analyze large amounts of medical data and identify patterns that can help doctors diagnose diseases more accurately and quickly. Machine learning can also be used to optimize business processes, such as predicting customer behavior or optimizing supply chain operations.

In recent years, machine learning has been applied to a wide range of industries, including healthcare, finance, retail, and transportation. For example, in healthcare, machine learning algorithms are being used to analyze medical images and identify early signs of diseases such as cancer. In finance, machine learning algorithms can be used to detect fraudulent transactions or predict stock market trends. In retail, machine learning can be used to personalize marketing campaigns and recommend products to customers based on their preferences.

As the field of machine learning continues to evolve, researchers are exploring new techniques and algorithms to improve the performance and capabilities of machine learning systems. One area of research that is gaining traction is deep learning, a subset of machine learning that uses artificial neural networks to model complex patterns in data. Deep learning has been successful in a wide range of applications, including image and speech recognition, natural language processing, and autonomous driving.

Overall, machine learning is a powerful tool that has the potential to revolutionize many aspects of our lives. As researchers continue to make advances in the field, we can expect to see even more innovative applications of machine learning in the future. From personalized healthcare to autonomous vehicles, the possibilities are endless with machine learning.

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