Related Experiment Video
Updated: May 8, 2026

10:19
High-throughput Flow Cytometry Cell-based Assay to Detect Antibodies to N-Methyl-D-aspartate Receptor or Dopamine-2 Receptor in Human Serum
Published on: November 23, 2013
Autoimmune Limbic Encephalitis With GAD Antibodies.
1Department of Neurology, Hartford Hospital and University of Connecticut School of Medicine, Hartford, CT, USA.
The Neurohospitalist
|August 29, 2013
Summary
Autoimmune limbic encephalitis can present variably. This case highlights diagnosing glutamic acid decarboxylase antibody-associated limbic encephalitis using MRI and antibody screening.
Area of Science:
- Neurology
- Immunology
- Radiology
Background:
- Limbic encephalitis presents with diverse neurological symptoms.
- Rare causes can complicate diagnosis.
- Autoimmune mechanisms are increasingly recognized.
Purpose of the Study:
- To present a case of autoimmune limbic encephalitis.
- To investigate the role of glutamic acid decarboxylase antibodies.
- To discuss diagnostic approaches including MRI and antibody screening.
Main Methods:
- Case report.
- Review of clinical presentation.
- Analysis of magnetic resonance imaging (MRI) findings.
- Antineural antibody testing.
Main Results:
- The patient presented with a variable neurologic picture.
- Autoimmune limbic encephalitis was diagnosed.
- Glutamic acid decarboxylase (GAD) antibody was identified.
- MRI findings were consistent with limbic encephalitis.
Conclusions:
- Autoimmune limbic encephalitis due to GAD antibodies is a treatable condition.
- Diagnostic challenges exist due to variable presentations.
- Integrated use of MRI and antineural antibody screening is crucial for diagnosis.
Related Concept Videos
Encephalitis l: Introduction
Encephalitis is inflammation of the brain parenchyma, most often due to infections or autoimmune processes. It presents with neuropsychiatric features such as fever, altered mental status, behavioral changes, cognitive dysfunction, seizures, focal deficits, and sometimes autonomic instability. In some cases, the meninges are also involved, resulting in meningoencephalitis.Infectious CausesInfectious encephalitis is most commonly viral but can also result from bacterial, fungal, or parasitic...
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...
Myasthenia Gravis ll: Pathophysiology
The disease process of myasthenia gravis begins at the neuromuscular junction, where antibodies attack key proteins needed for muscle activation. This immune reaction weakens signal transmission, leading to the characteristic muscle fatigue and weakness that define the condition.Immune-Mediated DamageIn most individuals, antibodies target acetylcholine receptors (AChRs) on the postsynaptic membrane of muscle cells. By blocking acetylcholine binding, these antibodies prevent the nerve signal...
Arboviral Encephalitis
Arboviral encephalitis refers to brain inflammation caused by arthropod-borne viruses, particularly those transmitted through mosquito vectors. Among these, West Nile virus (WNV), a member of the Flaviviridae family, is a significant public health concern. WNV is an enveloped, positive-sense, single-stranded RNA virus. Human infection typically begins when an infected mosquito introduces the virus into the dermis during feeding. The primary transmission cycle involves birds as amplifying hosts...

