Related Experiment Video
Updated: Jun 20, 2026
07:30
HSV-Mediated Transgene Expression of Chimeric Constructs to Study Behavioral Function of GPCR Heteromers in Mice
Published on: July 9, 2016
Molecular mechanisms underlying glutamatergic dysfunction in schizophrenia: therapeutic implications
Pablo A Gaspar1, M Leonor Bustamante, Hernán Silva
1Clínica Psiquiátrica Universitaria, Hospital Clínico de la Universidad de Chile, Casilla, Santiago, Chile. pgaspar@neuro.med.uchile.cl
Journal of Neurochemistry
|August 19, 2009
Summary
Schizophrenia may stem from glutamate dysfunction, not just dopamine. Targeting metabotropic glutamate receptors could offer new treatments by regulating NMDA receptor activity and preventing neurotoxicity.
Area of Science:
- Neuroscience
- Psychiatry
- Pharmacology
Background:
- Early schizophrenia models emphasized dopamine, but recent evidence points to primary glutamatergic dysfunction.
- Dopamine imbalances are now considered secondary to underlying glutamate system dysregulation.
- Current pathophysiology models involve NMDA receptor hypofunction impacting GABA interneurons and pyramidal output.
Purpose of the Study:
- To explore the role of metabotropic glutamate receptors in schizophrenia pathophysiology.
- To investigate the potential of metabotropic glutamate receptors as a therapeutic target.
- To understand how metabotropic glutamate receptors may modulate NMDA receptor activity and excitotoxicity.
Main Methods:
- Review of current literature on schizophrenia pathophysiology.
- Analysis of the proposed NMDA receptor hypofunction model.
- Hypothesizing the modulatory role of metabotropic glutamate receptors.
Main Results:
- NMDA receptor hypofunction may explain cognitive deficits and dopaminergic alterations in schizophrenia.
- NMDAR overactivation can lead to neurotoxicity, exacerbating neuropathological changes.
- Metabotropic glutamate receptors show potential to modulate NMDAR activity and excitotoxicity.
Conclusions:
- Glutamatergic dysfunction, particularly involving NMDA receptors, is central to schizophrenia.
- Metabotropic glutamate receptors offer a promising therapeutic target for schizophrenia treatment.
- Targeting metabotropic glutamate receptors may help regulate excitotoxicity and improve patient outcomes.
Related Concept Videos
01:27Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within the...
01:29Biological Causes of Schizophrenia
Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin studies.
01:14Antiepileptic Drugs: Glutamate Antagonists
Glutamate is a fundamental neurotransmitter in the central nervous system, playing a vital role in neuronal communication and various cognitive processes. Glutamate stands as the principal excitatory neurotransmitter in the brain. Its presence is crucial for the communication between neurons, underpinning essential processes such as synaptic transmission, neuronal excitability, and plasticity. These functions are vital for higher-order cognitive processes, including learning and memory. The...
01:28Drug Therapy
The advent of drug therapy has profoundly shaped modern mental health care, providing targeted treatments for a range of psychological disorders. Psychotherapeutic drugs, classified into antianxiety, antidepressant, and antipsychotic medications, address symptoms across anxiety disorders, mood disorders, and schizophrenia. While these medications have transformed patient outcomes, they require careful management due to their potential side effects and limitations.
Antianxiety Medications
Antianxiety Medications
01:26Psychosis: Goals of Pharmacotherapy
Antipsychotic drugs are a crucial treatment method for acute and chronic psychoses, bipolar illness, and behavioral disorders. The selection of these drugs depends on several factors, including the state of the disease, clinical judgment, possible drug interactions, and the patient's sensitivity to adverse effects. In immediate scenarios, such as delirium and dementia, short-term treatment with low doses of high-potency typical or atypical agents can effectively manage symptom exacerbation. For...
01:30Ligand-Gated Ion Channel Receptor: Gating Mechanism
Ligand-gated ion channels are transmembrane proteins that play a vital role in intercellular communication and functions of the nervous system. They allow the influx of ions across the membrane once the neurotransmitter binds, allowing the subsequent transmission of electrical excitation across the neurons. Other ligand-gated ion channels, like the γ-aminobutyric acid (GABA) receptor, permit anions like chloride into the cells on the binding of the GABA molecule. Their entry into the cell...