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Encephalitis ll: Pathophysiology01:26

Encephalitis ll: Pathophysiology

Encephalitis is inflammation of the brain parenchyma caused by direct viral invasion or immune-mediated mechanisms triggered by infections or tumors. Both processes lead to neuronal injury, disrupted neurotransmission, and diverse neurological symptoms, often with overlapping clinical and pathological features.Autoimmune EncephalitisIn autoimmune encephalitis, antibodies target neuronal antigens on cell surfaces, synapses, or within neurons. A key example is anti-NMDAR encephalitis, which can...
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At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
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Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
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Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...

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Related Experiment Video

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Experimental Autoimmune Uveitis: An Intraocular Inflammatory Mouse Model
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Published on: January 12, 2022

CNS diseases and uveitis.

Pia Allegri1, Roberto Rissotto, Carl P Herbort

  • 1Uveitis Center, Ophthalmology Department, Rapallo Hospital, Genova, Italy.

Journal of Ophthalmic & Vision Research
|March 29, 2012
PubMed
Summary

Ocular and central nervous system (CNS) disorders present diagnostic challenges due to overlapping symptoms. This review guides diagnosis and treatment of inflammatory, infectious, and autoimmune conditions affecting both the eye and CNS.

Keywords:
CNS Inflammatory and Infectious DiseasesEye Inflammatory and Infectious DiseasesUveitis

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Area of Science:

  • Neuro-ophthalmology
  • Neurology
  • Immunology

Background:

  • Concurrent or sequential disorders of the eye and central nervous system (CNS) are common.
  • Inflammatory, infectious, neoplastic, and idiopathic conditions can affect both systems.
  • Similar ocular and neurological manifestations pose diagnostic challenges.

Purpose of the Study:

  • To review major neurological syndromes affecting the eye.
  • To provide a guide for diagnosing and treating these disorders.
  • To emphasize the neurological perspective in understanding these conditions.

Main Methods:

  • Literature review of neurological syndromes impacting the eye.
  • Focus on conditions with overlapping ocular and neurological signs.
  • Emphasis on a neurologist's viewpoint.

Main Results:

  • Identified key neurological syndromes: multiple sclerosis, Vogt-Koyanagi-Harada disease, autoimmune syndromes, and infectious diseases.
  • Highlighted diagnostic similarities and challenges.
  • Stressed the importance of considering neurological involvement.

Conclusions:

  • Accurate diagnosis requires recognizing shared ocular and neurological features.
  • Neurological assessment is crucial for managing patients with these complex disorders.
  • This review serves as a diagnostic and treatment aid for clinicians.