Pilot Studies Blocking Injury-Induced MVP Release in Skin Using Topical Amitriptyline
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
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
-
-
Ohio
-
Fairborn, Ohio, Forenede Stater, 45324
- Wright State University - Pharmacology Translational Unit
-
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/Females ages 18-64
- All skin types on Fitzpatrick Scale (Type I-VI)
- Able to comprehend procedures and risks
- Must be able to give informed consent
Exclusion Criteria:
- Underlying diseases that could affect wound healing (e.g., uncontrolled diabetes mellitus)
- 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 ASM inhibitors
- Large tattoos in designated testing areas
- Tanning bed use within last 3 months
- UVB treatments in past 3 months
- Pregnant or nursing
- Known allergies to lidocaine or amitriptyline
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Forebyggelse
- Tildeling: N/A
- Interventionel model: Enkelt gruppeopgave
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Heated Metal Bar to Skin
Five small areas on the inner forearms will be selected for treatment.
Three of the areas will be treated with the heated metal bar and 10% amitriptyline is applied immediately after the burn, 5 minutes after the burn and 15 minutes after the burn.
One of the selected area will be treated with the heated metal bar then a placebo will be applied.
Also, placebo will be applied to one area that is not treated with the metal bar.
|
Placebo
10% amitriptyline
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Change in the amount of microvesicle particles generated in skin from localized thermal burn injury over untreated skin.
Tidsramme: 2 hours after the burn injury
|
Anesthetized volar forearm skin will be treated with a heated 3.5 mm metal rod to generate a thermal burn injury.
Immediately after the burn injury 0.1mL of polyethylene glycol vehicle will be applied.
Vehicle will also be applied to nearby un-burned skin.
Skin biopsies of burned provided vehicle and nearby unburned area with vehicle will be obtained 2 hours after localized burn injury.
MVP will be measured.
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 numbers of MVP in untreated skin will be compared to skin which underwent a thermal burn injury.
|
2 hours after the burn injury
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
The amount of MVP released after topical 10% amitriptyline is provided immediately after localized thermal burn injury compared to vehicle.
Tidsramme: 2 hours after the burn injury
|
Anesthetized volar forearm skin will be treated with a heated 3.5 mm metal rod to generate a thermal burn injury.
Immediately after the burn injury 0.1mL of polyethylene glycol vehicle will be applied to one burned area and 10% amitriptyline will be applied to the other burned site.
Skin biopsies of burned provided and nearby untreated area will be obtained 2 hours after localized burn injury.
MVP will be measured.
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 numbers of MVP in skin treated with vehicle + burn injury will be compared to skin treated with amitriptyline + burn injury to ascertain if the amitriptyline can decrease the burn-induced MVP release.
|
2 hours after the burn injury
|
Andre resultatmål
Andre resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
The amount of MVP released after topical 10% amitriptyline is provided 5 and 15 minutes after localized thermal burn injury compared to vehicle and amitriptyline given immediately afterwards.
Tidsramme: 2 hours after burn injury
|
Anesthetized volar forearm skin will be treated with a heated 3.5 mm metal rod to generate thermal burn injuries in two sites.
0.1 mL of 10% amitriptyline will be applied to one burned site 5 minutes after the burn injury and 10% amitriptyline will be applied at 15 minutes post-burn injury at 15 minutes.
Skin biopsies of sites will be obtained 2 hours after localized burn injury.
MVP will be measured.
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 numbers of MVP in skin treated with vehicle + burn injury will be compared to skin treated with amitriptyline + burn injury at various times post-treatment to ascertain if the amitriptyline can decrease the burn-induced MVP release, and if amitriptyline is still effective if given 5 and 15 minutes post burn injury.
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2 hours after burn injury
|
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-2026-1027
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
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