Overcoming Membrane Transporters to Improve CNS Drug Delivery - Improving Brain Antioxidants After Traumatic Brain Injury (Pro-NAC)
Overcoming Membrane Transporters to Improve CNS Drug Delivery
The overall purpose of this research study is to investigate the safety of pharmacological therapies that may potentially improve pediatric outcomes after traumatic brain injury. Traumatic brain injuries are the leading cause of death and disability among children and young adults.
Hypothesis: Combinational therapy with a membrane transporter and antioxidant are safe after TBI and can overcome barriers to the brain and synergistically improve bioavailability and efficacy the antioxidant content of the body and CNS after TBI.
Studieoversikt
Status
Status
Forhold
Forhold
Intervensjon / Behandling
Intervensjon / Behandling
Detaljert beskrivelse
Specific Aim: Define the capacity of the combination of probenecid and NAC to safely and synergistically preserve levels of GSH and reduce oxidative stress in children with severe TBI. We will enroll 20 children age 2 to less than 18 years old (less than 216 months) after severe TBI in a randomized, controlled study of administration of the combinational therapy and test if the administration of these drugs is safe and if antioxidant reserve can be preserved within the serum and CSF.
Probenecid (at the same dose that is used as an adjunct to antibiotic therapy) and NAC (at the same dose that is used for acetaminophen-induced liver disease), or vehicles will be given for 3 days. The primary outcomes of the study will be the safety of drug administration and the CSF and serum levels anti-oxidant reserve (AOR), with the presumption that maintaining anti-oxidant levels within the brain may prove neuroprotective. Other secondary outcomes (CSF and serum probenecid, NAC, GSH and phenytoin concentrations) will also be tested. Adverse events occuring during treatment with these drugs after TBI will be monitored by a local Data Safety Monitoring Board.
Studietype
Studietype
Registrering (Faktiske)
Registrering
Fase
Fase
- Fase 2
- Fase 1
Kontakter og plasseringer
Studiesteder
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Pennsylvania
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Pittsburgh, Pennsylvania, Forente stater, 15213
- Children's Hospital of Pittsburgh of UPMC
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Deltakelseskriterier
Kvalifikasjonskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
Inclusion Criteria:
- Children (age 2 - 18 y) with severe TBI (GCS < or = 8) with an externalized ventricular drain placed for measurement of intracranial pressure
Exclusion Criteria:
- Brain dead on admission to ICU
- Pregnancy
- Contraindications to enteral medications
Contraindications to probenecid:
- status epilepticus
- blood dyscrasias
- under 2 years-of-age
- coadministration of salicylates
- renal dysfunction or urate kidney stones
- hypersensitivity to probenecid
- Contraindications to N-acetylcysteine: hypersensitivity to N-acetylcysteine
- Family unwilling to consent
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Behandling
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Firemannsrom
Antall våpen
Våpen og intervensjoner
Deltakergruppe / ArmDeltakergruppe / Arm |
Intervensjon / BehandlingIntervensjon / Behandling |
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Eksperimentell: Drug
Probenecid and N-acetyl cysteine will be administered at standard doses for the first 4 days after TBI.
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After obtaining written parental consent, patients will be randomized by the use of a blind envelope system to one of the following: to receive probenecid (initial: 25 mg/kg/dose; maintenance: 10mg/kg/dose 4 x per day for 11 doses) and NAC (initial: 140mg/kg/dose; maintenance: 70mg/kg/dose 6 x per day for 17 doses) or the placebo via nasogastric (NG) or orogastric (OG) tube for 3 days or to receive placebos.
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Placebo komparator: Placebo
Placebos will be prepared for the two experimental drugs and administered at identical time periods.
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After obtaining written parental consent, patients will be randomized by the use of a blind envelope system to one of the following: to receive probenecid (initial: 25 mg/kg/dose; maintenance: 10mg/kg/dose 4 x per day for 11 doses) and NAC (initial: 140mg/kg/dose; maintenance: 70mg/kg/dose 6 x per day for 17 doses) or the placebo via nasogastric (NG) or orogastric (OG) tube for 3 days.
Placebo contents include equal volumes and dosing regimens of lactose powder (for opacity) suspended in Ora-Plus and normal saline.
Andre navn:
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Hva måler studien?
Primære resultatmål
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Number of Participants Who Experienced Adverse Events
Tidsramme: 14 days after drug administration
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The number of patients experiencing one or more of the following adverse events: Acute renal failure Anaphylaxis Acute respiratory distress syndrome Intracranial infection/abscess Arrhythmia, atrial Arrhythmia, ventricular Bradycardia Cardiac arrest Catheter positive culture Cerebrospinal fluid leak Decubitis Deep vein thrombosis Diabetes Insipidus Emesis Extraaxial hematoma Gastrointestinal bleed Gastritis Hematuria Hemorrhage, other Hemoperitonium Hemothorax Hepatitis Hydrocephalus Hypotension Hypoxemia Infection, other Intraparenchymal hemorrhage Intraventricular hemorrhage Meningitis/ventriculitis Multiorgan dysfunction syndrome Myocardial ischemia Pancreatitis Pericarditis Peritonitis Pneumothorax Pulmonary edema Pulmonary embolism Respiratory arrest Seizures Sepsis Syndrome of inappropriate antidiuretic hormone Transtentorial herniation Withdrawal of Life Support Other SAE causing re-hospitalization Other SAE |
14 days after drug administration
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
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Antioxidant Reserve
Tidsramme: Within 5 days of injury
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Antioxidant reserves in CSF and serum will be calculated in both treatment arms and compared.
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Within 5 days of injury
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Samarbeidspartnere og etterforskere
Sponsor
Sponsor
Samarbeidspartnere
Samarbeidspartnere
Etterforskere
Etterforskere
- Hovedetterforsker: Michael J Bell, MD, University of Pittsburgh
- Studieleder: Robert SB Clark, MD, University of Pittsburgh
Publikasjoner og nyttige lenker
Generelle publikasjoner
- Hagos FT, Empey PE, Wang P, Ma X, Poloyac SM, Bayir H, Kochanek PM, Bell MJ, Clark RSB. Exploratory Application of Neuropharmacometabolomics in Severe Childhood Traumatic Brain Injury. Crit Care Med. 2018 Sep;46(9):1471-1479. doi: 10.1097/CCM.0000000000003203.
- Clark RSB, Empey PE, Bayir H, Rosario BL, Poloyac SM, Kochanek PM, Nolin TD, Au AK, Horvat CM, Wisniewski SR, Bell MJ. Phase I randomized clinical trial of N-acetylcysteine in combination with an adjuvant probenecid for treatment of severe traumatic brain injury in children. PLoS One. 2017 Jul 7;12(7):e0180280. doi: 10.1371/journal.pone.0180280. eCollection 2017.
Studierekorddatoer
Studer hoveddatoer
Studiestart
Studiestart
Primær fullføring (Faktiske)
Primær fullføring
Studiet fullført (Faktiske)
Studiet fullført
Datoer for studieregistrering
Først innsendt
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Anslag)
Først lagt ut
Oppdateringer av studieposter
Sist oppdatering lagt ut (Anslag)
Sist oppdatering lagt ut
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Nøkkelord
Ytterligere relevante MeSH-vilkår
- Hjernesykdommer
- Sykdommer i sentralnervesystemet
- Sykdommer i nervesystemet
- Sår og skader
- Kraniocerebralt traume
- Traumer, nervesystemet
- Hjerneskader
- Hjerneskader, traumatiske
- Fysiologiske effekter av legemidler
- Molekylære mekanismer for farmakologisk virkning
- Anti-infeksjonsmidler
- Antivirale midler
- Antirevmatiske midler
- Beskyttende agenter
- Luftveismidler
- Antioksidanter
- Motgift
- Free Radical Scavengers
- Giktdempende midler
- Expektoranter
- Nyremidler
- Urikosuriske midler
- Acetylcystein
- N-monoacetylcystin
- Probenecid
Andre studie-ID-numre
Andre studie-ID-numre
- NS069247
- 1R01NS069247-01 (U.S. NIH-stipend/kontrakt)
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