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Related Concept Videos

Toxidromes: Clinical Features01:30

Toxidromes: Clinical Features

Toxidromes are specific patterns of symptoms resulting from toxic substance exposure. They help in the identification and treatment of poisoning. The symptoms of each toxidrome group indicate poisoning by a certain class of chemicals or drugs.1. Sympathomimetic: Stimulates the sympathetic nervous system. Symptoms include agitation, increased heart rate (HR), blood pressure (BP), respiratory rate (RR), temperature, and pupil size. Drugs like cocaine and amphetamines, along with tremors and...
Symbiosis00:58

Symbiosis

Symbiotic relationships are long-term, close interactions between individuals of different species that affect the distribution and abundance of those species. When a relationship is beneficial to both species, this is called mutualism. When the relationship is beneficial to one species but neither beneficial nor harmful to the other species, this is called commensalism. When one organism is harmed to benefit another, the relationship is known as parasitism. These types of relationships often...
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Sexually Transmitted Infections

Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
Teratogenicity01:07

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
Diversity of Protists II01:27

Diversity 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...
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Arboviral Encephalitis

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Related Experiment Video

Updated: May 21, 2026

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii
06:33

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii

Published on: December 9, 2014

[Toxoplasmosis].

Kazuhiro Horiuchi1, Ichiro Yabe

  • 1Department of Neurology, Hakodate Municipal Hospital.

Brain and Nerve = Shinkei Kenkyu No Shinpo
|May 19, 2026
PubMed
Summary

Toxoplasmic encephalitis (TE) is a severe brain infection in immunocompromised individuals, often due to Toxoplasma gondii reactivation. Prompt diagnosis and treatment with pyrimethamine and sulfadiazine are crucial for better patient outcomes.

Area of Science:

  • Neuroscience
  • Infectious Diseases
  • Parasitology

Background:

  • Toxoplasmic encephalitis (TE) is a serious opportunistic infection impacting the central nervous system.
  • It primarily affects individuals with severe cellular immunodeficiency, such as those with acquired immunodeficiency syndrome (AIDS) and low CD4 counts.
  • Reactivation of latent Toxoplasma gondii cysts in the brain causes TE.

Purpose of the Study:

  • To review the epidemiology, pathophysiology, clinical presentation, diagnosis, and treatment of Toxoplasmic encephalitis.
  • To highlight diagnostic challenges, particularly differentiating TE from primary central nervous system lymphoma.
  • To emphasize the importance of early diagnosis and treatment for improved patient outcomes.

Main Methods:

  • Review of existing literature on Toxoplasmic encephalitis.

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Toxoplasma gondii Cyst Wall Formation in Activated Bone Marrow-derived Macrophages and Bradyzoite Conditions
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Toxoplasma gondii Cyst Wall Formation in Activated Bone Marrow-derived Macrophages and Bradyzoite Conditions

Published on: August 12, 2010

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Last Updated: May 21, 2026

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii
06:33

3-D Imaging and Analysis of Neurons Infected In Vivo with Toxoplasma gondii

Published on: December 9, 2014

Toxoplasma gondii Cyst Wall Formation in Activated Bone Marrow-derived Macrophages and Bradyzoite Conditions
09:56

Toxoplasma gondii Cyst Wall Formation in Activated Bone Marrow-derived Macrophages and Bradyzoite Conditions

Published on: August 12, 2010

  • Analysis of diagnostic criteria, including serologic testing, cerebrospinal fluid analysis, and neuroimaging.
  • Evaluation of current therapeutic strategies and maintenance protocols.

    • Main Results:

    • TE presents with symptoms like headache, fever, neurological deficits, seizures, and altered mental status.
    • Neuroimaging may show ring-enhancing lesions, complicating differential diagnosis with CNS lymphoma.
    • Diagnosis is confirmed through serology, PCR in CSF, and characteristic MRI findings like the eccentric target sign.

    Conclusions:

    • Early diagnosis of TE is critical for effective management.
    • The standard first-line treatment involves pyrimethamine and sulfadiazine, with maintenance therapy recommended.
    • Prompt initiation of appropriate therapy significantly improves patient prognosis in cases of Toxoplasmic encephalitis.