Pilot Studies Testing the Use of Oral Amitriptyline in Reducing Localized Burn Injury-induced Microvesicle Particle Release
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Fase 1
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Pharmacology Translational Unit
- Telefonnummer: 937-245-7500
- E-mail: pturesearch@docdermgroup.com
Studiesteder
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Ohio
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Fairborn, Ohio, Forenede Stater, 45324
- Wright State University - Pharmacology Translational Unit
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Kontakt:
- Pharmacology Translational Unit
- Telefonnummer: 937-245-7500
- E-mail: pturesearch@docdermgroup.com
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Adult Males and Females age 18 - 60
- All skin types on Fitzpatrick Scale (Type I-VI)
- Able to comprehend procedures and risks
- Willing to participate and understand the informed consent document
- Have reliable transportation
Exclusion Criteria:
- Subjects should be otherwise healthy and not have any significant medical issues that could interfere with the study, in particular any heart arrythmias and not be on any prescription medications that could react with amitriptyline.
- History of abnormal scarring (i.e., keloids) or poor wound healing.
- No over the counter non-steroidal anti-inflammatory agents (aspirin, acetaminophen) or antioxidant vitamins (vitamin C) in past 14 days.
- Currently taking known photosensitizers, anti-inflammatories, other tricyclic antidepressants, or systemic agents known to be aSMase inhibitors
- Large tattoos in designated testing areas
- Tanning bed use within last 3 months
- UVB treatments in past 3 months
- Medical history of abnormal scarring or diseases that could affect wound healing
- Medical history of hypertension/hypotension or heart problems
- Pregnant or nursing
- History of sores in nares or easy bleeding from nares or other bleeding disorders.
- Nasal piercings
- Known allergies to lidocaine or amitriptyline
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: Randomiseret
- Interventionel model: Crossover opgave
- Maskning: Dobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
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Andet: Amitriptyline then Placebo
At Visit 1, subjects take 75mg amitriptyline.
Then at Visit 2, subjects take a placebo.
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Placebo
75mg amitriptyline
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Andet: Placebo then Amitriptyline
At Visit 1, subjects take placebo.
Then at Visit 2, subjects take 75mg amitriptyline.
|
Placebo
75mg amitriptyline
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change from Baseline in MVP Release in Skin from a localized thermal burn injury in response to oral amitriptyline versus placebo as measured by skin biopsy
Tidsramme: 2 hours after the burn injury
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To see the change from baseline in microvesicle particle release in the skin after a localized thermal burn injury.
In this double-blinded placebo-controlled crossover study.
Subjects are treated with placebo or 75mg amitriptyline and 90 minutes later a small area of anesthetized volar forearm skin will be treated with a heated 3.5 mm metal rod to generate a thermal burn injury.
Skin biopsies of burned and nearby untreated area will be obtained 2 hours after localized burn injury.
MVP will be measured int he tissue.
Briefly, the biopsies will be weighed, and treated with enzymes to break down the tissue.
Following several centrifugation steps, the MVP fraction will be measured using a Nanosight instrument.
The MVPs will be normalized to biopsy weight.
The process will be repeated in 6-10 weeks but will use opposite forearm and subjects who were given placebo will be given amitriptyline (and vice versa).
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2 hours after the burn injury
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in MVP release of nasal mucosal cells obtained from one nostril before and other nostril 90 min after subject ingests placebo or 75mg amitriptyline
Tidsramme: 2 hours after burn injury
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These studies will test if oral amitriptyline will block thermal injury-induced MVP release in nasal epithelial cells ex vivo.
Subjects will have nasal epithelial cells removed from one nostril before and other nostril 90 minutes following treatment with placebo or 75mg amitriptyline.
The nasal mucosal epithelial cells will taken to the laboratory and treated with a 30 second exposure to a heated water bath and 2 hours later MVP isolated from the supernatants and following several centrifugation steps, the MVP fraction will be quantitated using a Nanosight instrument.
The process will be repeated in 6-10 weeks but subjects who were given placebo will be given amitriptyline (and vice versa).
The amount of MVP induced in the supernatants of nasal mucosa cells treated with burn injury ex vivo will be compared to no burn treatment.
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2 hours after burn injury
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- IRB-2026-1023
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
produkt fremstillet i og eksporteret fra U.S.A.
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