Related Experiment Video
Updated: Jan 13, 2026
11:27
The Use of Pharmacological-challenge fMRI in Pre-clinical Research: Application to the 5-HT System
Published on: April 25, 2012
15.9K
Pharmacological MRI: Utility in Understanding Drug Mechanisms in Psychiatric Disorders
Christin Y Sander1,2, Tudor M Ionescu3, Mitul A Mehta4
1Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Charlestown, Massachusetts, USA.
Journal of Magnetic Resonance Imaging : JMRI
|October 29, 2025
Summary
Pharmacological MRI (pharmaMRI) advances the study of psychoactive drugs
Area of Science:
- Neuroscience
- Pharmacology
- Medical Imaging
Background:
- Pharmacological MRI (pharmaMRI) is crucial for understanding how drugs impact brain function.
- It aids in uncovering drug mechanisms for psychiatric disorders.
Purpose of the Study:
- To review key techniques in pharmaMRI (BOLD-fMRI, ASL, CBV mapping).
- To highlight advances in preclinical and clinical pharmaMRI for drug development and psychiatric treatment.
Main Methods:
- Overview of Blood-Oxygen-Level-Dependent functional MRI (BOLD-fMRI), arterial spin labeling (ASL), and cerebral blood volume (CBV) mapping.
- Discussion of preclinical techniques (contrast agents, neuromodulation) and clinical applications (biomarkers, dose selection).
Main Results:
- Preclinical pharmaMRI provides mechanistic insights into drug effects at receptor and circuit levels.
- Clinical pharmaMRI elucidates drug impacts on brain networks and aids in predicting treatment response.
Conclusions:
- Systematic use of pharmaMRI can accelerate drug development and support precision psychiatry.
- PharmaMRI bridges molecular mechanisms with systems-level brain function, despite limited clinical adoption.
Related Concept Videos
01:14Brain Imaging
661
Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans), magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
661
01:20Measurement of Bioavailability: Pharmacodynamic Methods
228
Pharmacodynamic methods provide insights into a drug's effects on physiological processes over time and play a crucial role in understanding bioavailability and therapeutic efficacy. These methods can be broadly classified into acute pharmacological and therapeutic response approaches, each with distinct mechanisms and applications.The acute pharmacological response method directly correlates a drug's physiological effects, such as ECG or pupil diameter changes, to its time course in the body.
228
01:26Psychosis: Goals of Pharmacotherapy
460
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.
460
01:23Antidepressant Drugs: MAOIs and Other Agents
797
Atypical antidepressants, including bupropion (Wellbutrin), mirtazapine (Remeron), nefazodone (Serzone), trazodone (Desyrel), and vilazodone (Viibryd), offer unique mechanisms of action. Bupropion weakly inhibits dopamine and norepinephrine reuptake, aiding depression treatment and smoking cessation, with a low risk of sexual dysfunction. Mirtazapine enhances serotonin and norepinephrine neurotransmission, leading to sedation, increased appetite, and weight gain. As a result, it helps treat...
797
01:24Magnetic Resonance Imaging
9.0K
Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
9.0K
01:21Pharmacodynamics: Overview and Principles
2.8K
Pharmacodynamics is a scientific field that delves into drugs' intricate biochemical, cellular, and physiological effects on the human body. The study of pharmacodynamics helps us understand how drugs interact with the body and elicit various responses.
Most drugs' effects result from their interactions with drug receptors or targets within the body. These interactions trigger specific responses at the cellular or systemic level. Drug receptors can be found on the surfaces of cells or...
Most drugs' effects result from their interactions with drug receptors or targets within the body. These interactions trigger specific responses at the cellular or systemic level. Drug receptors can be found on the surfaces of cells or...
2.8K