Neuroprotection in Acute Ischemic Stroke (H2M)

  • days left to enroll
  • participants needed
  • sponsor
    Stony Brook University
Updated on 12 March 2022


This is a pilot randomized control trial (RCT) to explore the possible beneficial effect of a novel combination therapy consisting of molecular hydrogen H2 plus minocycline ("H2M"), on neurological recovery after acute ischemic stroke.


This will be a pilot trial exploring the ability of a novel combination ("H2M") of molecular hydrogen (an antioxidant) and minocycline (a widely used antibiotic known to inhibit the activation of matrix metallo-proteinase-9 and poly(ADP-ribose) polymerase), to protect brain tissue from ischemia/reperfusion injury that occurs during and after an ischemic stroke. Both hydrogen and minocycline have excellent safety profiles, have been previously demonstrated individually to reduce infarction in animal models of stroke, and have potentially synergistic mechanisms of action against ischemic brain damage. The mechanisms of action of both agents would be specifically relevant to patients receiving tissue plasminogen activator (tPA) or thrombectomy, and achieving some degree of therapeutic reperfusion.

This will be a double blinded, placebo-controlled trial. Eligible and willing subjects will be randomly assigned to be treated with either H2M or placebo, in addition to standard treatments. The treatment with H2M or placebo will start as soon as possible after diagnosis of stroke, and continue for three days (hydrogen) and five days (minocycline) respectively. Measures of stroke severity and disability will be recorded at baseline, and through a follow-up phone call (45 days) and clinic visit (90 days).

Condition Stroke, Ischemic
Treatment Minocycline, Hydrogen, Placebo Hydrogen, Placebo Minocycline
Clinical Study IdentifierNCT03320018
SponsorStony Brook University
Last Modified on12 March 2022


Yes No Not Sure

Inclusion Criteria

Aged 18 years old or over
Presenting to/at Stony Brook University Hospital with acute ischemic stroke
Baseline (at admission to study) National Institute of Health Stroke Scale (NIHSS) of ≥ 5
Administration of study medication possible within 24 hours of last known well

Exclusion Criteria

Pre-existing neurological disability (historical NIHSS > 3); unable to live independently 3. Severe stroke or comorbidities likely to result in patient dying within 3 months 4. Acute or chronic renal failure with calculated creatinine clearance < 30 5. Liver disease leading to > 3x elevation in liver transaminases or significant loss of synthetic capacity 6. Thrombocytopenia (<100x10^9platelets / L blood) 7. Pre-existing infectious disease requiring antibiotic therapy that have a negative interaction with minocycline. (Penicillin, amoxicillin, ampicillin, bacampicillin, carbenicillin, cloxacillin, dicloxacillin, methicillin, mezlocillin, nafcillin, oxacillin, piperacillin, ticarcillin)
Known allergy to tetracycline group of drugs 10. Concurrent treatment with retinoids or ergot alkaloids 11. Inability to safely tolerate the fluid load (iv normal saline or po water) associated with study medication _12\. Treatment with another investigational drug within the last 30 days that may interfere with this study's medications_ 13\. Inability to tolerate or comply with study procedures
Pregnancy or nursing. Females of reproductive age will be required to use barrier contraception or abstain from sexual intercourse while on study medications, as minocycline may render oral contraceptives less effective
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