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Intraoperative Brain Microdialysis to Assess Neuroinflammation in Epileptic Tissue Immediately Prior to Surgical Resection.

Intraoperative Brain Microdialysis to Assess Neuroinflammation in Epileptic Tissue Immediately Prior to Surgical Resection.

Status
Withdrawn
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04531722
Enrollment
0
Registered
2020-08-28
Start date
2019-03-27
Completion date
2026-01-10
Last updated
2026-04-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Epilepsy

Brief summary

This research study will investigate the fluid from the area of the brain that is being removed during clinical epilepsy surgery. The goal is to analyze this fluid for inflammatory markers that can potentially help identify new strategies in the future to control seizures in individuals with epilepsy who fail to respond to currently available drugs.

Interventions

PROCEDUREIntraoperative brain microdialysis

Our current standard practice is to use a lateral approach through the middle temporal gyrus to place 3 depth electrodes targeting the hippocampus for intraoperative verification of pathological epileptiform activity prior to resection. Our research protocol will add one FDA approved electrode that has a central cannula for insertion of a microdialysis probe.

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Intervention model description

We will establish intraoperative microdialysis in patients undergoing anterior temporal lobectomy for drug-resistant temporal lobe epilepsy. The human measurements will yield hypothesis-generating data and establish a methodological/logistical paradigm for future large-scale application of microdialysis in patients with drug refractory epilepsy.

Eligibility

Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
No

Inclusion criteria

* Failure to respond to at least two trials of anti-seizure drugs with different mechanisms of action * Normal MRI

Exclusion criteria

* Active immunomodulatory therapy * Autoimmune disorder * Signs or symptoms consistent with comorbid infection * Oncological comorbidity

Design outcomes

Primary

MeasureTime frameDescription
Detection of analytes/proteinThrough study completion, up to 5 yearsPresence of protein in the microdialysate

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORCharles Howe, PhD

Mayo Clinic

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 7, 2026