Related Experiment Video
Updated: Feb 20, 2026
Electrophoretic Delivery of γ-aminobutyric Acid GABA into Epileptic Focus Prevents Seizures in Mice
Published on: May 16, 2019
[The risk of epileptic seizures during antibiotic therapy]
1Centrum Leczenia Padaczki I Migreny, Kraków, Polska.
Abstract:
Numerous antibiotics may trigger epileptic seizures or status epilepticus by decreasing inhibitory transmission in the brain, thus lowering the seizure threshold. The most potent seizurogenic effect is exerted by penicillins, cephalosporins, fluorochinolons and carbapenems. Predisposing factors that facilitate development of epileptic seizures in the course of antibiotic therapy comprise all conditions accompanied by damage to the blood-brain barrier (including cerebral trauma and encephalitis), a high dose of an antibiotic or lack of adequate dose adjustment in patients with renal failure. A particularly dangerous and difficult to diagnose complication is nonconvulsive status epilepticus in patients treated with cephalosporins. For this reason, in case the patient presents with alterations of consciousness in the course of cephalosporin therapy, an EEG test should be performed. Some antibiotics, such as carbapenems, macrolides and antitubercular medications enter into pharmacokinetic interactions with antiepileptic agents, causing a decrease or increase in the plasma concentration of the latter and in consequence lead to possible epileptic seizures or drug-associated neurotoxicity. In patients with risk of epileptic seizures or with diagnosed epilepsy, one should select an antibiotic with a low proconvulsive potential and administer it in an adequately adjusted dose, especially in individuals with renal failure. Employing antibiotics interacting with antiepileptic medications with which the patient is treated should be avoided.
Insights
Certain antibiotics can lower the seizure threshold, increasing epilepsy risk. Careful antibiotic selection and dosing are crucial, especially in patients with kidney issues or epilepsy, to prevent seizures and neurotoxicity.
Area of Science:
- Neurology
- Pharmacology
- Infectious Diseases
Background:
- Antibiotics can lower the seizure threshold by reducing inhibitory brain transmission.
- Specific antibiotic classes, including penicillins, cephalosporins, fluoroquinolones, and carbapenems, exhibit potent seizurogenic effects.
- Factors like blood-brain barrier damage, high antibiotic doses, and renal impairment increase seizure risk during antibiotic therapy.
Purpose of the Study:
- To review the mechanisms and risk factors associated with antibiotic-induced seizures.
- To highlight the diagnostic challenges of nonconvulsive status epilepticus.
- To provide guidance on antibiotic selection and management in patients at risk for seizures.
Main Methods:
- Literature review of studies on antibiotic-induced epilepsy.
- Analysis of pharmacokinetic interactions between antibiotics and antiepileptic drugs.
- Discussion of clinical implications and management strategies.
Main Results:
- Penicillins, cephalosporins, fluoroquinolones, and carbapenems are strongly associated with seizures.
- Nonconvulsive status epilepticus from cephalosporins is a difficult diagnostic challenge requiring EEG.
- Antibiotic interactions with antiepileptic drugs can alter drug concentrations, leading to seizures or neurotoxicity.
Conclusions:
- Antibiotic-induced seizures are a significant concern, particularly in vulnerable patient populations.
- Careful antibiotic selection, dose adjustment (especially in renal failure), and awareness of drug interactions are essential.
- Electroencephalography (EEG) is critical for diagnosing altered consciousness during cephalosporin therapy.
More Related Videos
06:58Non-restraining EEG Radiotelemetry: Epidural and Deep Intracerebral Stereotaxic EEG Electrode Placement
Published on: June 25, 2016
08:28Methods for ECG Evaluation of Indicators of Cardiac Risk, and Susceptibility to Aconitine-induced Arrhythmias in Rats Following Status Epilepticus
Published on: April 5, 2011
Related Concept Videos
01:20Antiepileptic Drugs: Potassium Channel Activators
Ezogabine has gained approval as an adjunctive treatment...
01:24Epilepsy and Seizures: Overview
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
01:08Antiepileptic Drugs: Sodium Channel Blockers
Sodium channel blockers modulate ion channels, particularly voltage-gated sodium channels. They block only sodium ion movement.
Among the most commonly prescribed antiepileptic drugs are...
01:17Antiepileptic Drugs: Calcium Channel Blockers
Calcium channel blockers exert their antiepileptic effects by targeting T-type calcium channels, which are integral to transmitting nerve signals in the central nervous system. These channels allow the passage of calcium ions, which are vital for neuronal communication. By inhibiting T-type calcium channels, calcium channel blockers effectively reduce the release of neurotransmitters and...
01:14Antiepileptic Drugs: Glutamate Antagonists
01:20Antiepileptic Drugs: Modulators of Neurotransmitter Release Mediated by SV2A Protein
SV2A is a transmembrane glycoprotein located predominantly in the brain, modulating the release of neurotransmitters for neuronal communication. Both levetiracetam and brivaracetam exhibit a high affinity for...