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Child's Adipose Cells: Capacity of Tissue Regeneration (cicASChild)

10. maj 2017 opdateret af: University Hospital, Toulouse

Evaluation of Tissue Regeneration Potential (in the Skin) of Child's Adipose Cells During the Development.

The beneficial effect related to the administration of adipose tissue-derived stromal cells (ADSC) is demonstrated in various situations of physiological and pathological wound healing, thus opening a new field for cell therapy. Despite the use of new technologies, management of burns in children as well as congenital malformation such as hypospadias and cleft lip and/ or cleft palate can lead to aesthetic and functional sequelae requiring multiple surgical procedures. Cell therapy based on the administration of the ADSC seems a promising issue in such indications, however, to date no study has been conducted with ADSC from a pediatric population. An initial study (Protocol 0808203) allowed investigors to obtain the first samples of adipose tissue from children and to conduct an in vitro comparative study on the characterization and properties of the ADSC from children compared to adults. In the continuity, this second study aims to complete knowledge on the efficacy and safety of children ADSC cell therapy assessed in an animal model of skin wound healing developed in the lab.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

Through this study, the medium term objective is to approach a clinical protocol for treatment of pathological scars in developing an appropriate way to deliver ADSC for a future clinical application, while ensuring the safety of such procedure.

The primary goal of this work is to determine whether ADSC from children prepared according to Good Manufacturing Practice (GMP), is associated with an improvement of wound healing in vivo as demonstrated with adult ADSC. To answer this question, 40 samples of adipose tissue of children obtained from settled surgery (inguinal hernia and vesico-ureteral reflux by suprapubic way) will be performed within the 2 groups of children; 0 to 1 year and 2 to 13 years, defined from data acquired in the previous protocol. Wound healing will be evaluated in a nude mouse model of skin burn. A macroscopic analysis will be carried out with two indexes described in the literature (re-epithelialization and scar contraction) and expressed as a percentage of the initial lesion at different times (3 days, 7 days, 10 days, 14 days, 21 days, 30 days). A microscopic analysis will be conducted to determine the rate of re-epithelialization (day 7) and the evolution of the skin structural parameters (dermal and epidermal thickness, density of collagen, inflammatory infiltration). These indexes will be defined in the treated group (burned mice and injected with pediatric ADSC) from control mice (burned but not injected with cells). A comparative analysis between the two groups of age will be conducted that will be also compared to data collected with adult ADSC.

To answer to the second part of this primary goal regarding to safety, the study will perform a long-term follow-up (1 yr) of burned mice injected with of ADSC, to obtain data in the animal after transplantation of cells and for further clinical study.

Complementary in vitro investigations still seems necessary to better understand the specificities of ADSC from pediatric origin and particularly to perform transcriptomic and epigenetic studies.

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

38

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Frankrig
      • Toulouse, Frankrig, 31059
        • CHU de Toulouse-Purpan

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

8 måneder til 10 år (Barn)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

INCLUSION CRITERIA:

  • absence of tumor pathology, known systemic or chronic viral
  • absence of long-term treatment

  • signing informed consent form of persons exercising parental authority

    1st group (20 children):

  • Between 0 and less than or equal to 1 year
  • Weighing at least 1500 g at birth

  • Age ≥ 37 weeks of amenorrhea

    2nd group (20 children)

  • Older than 1 year to 10 years

EXCLUSION CRITERIA:

  • Children whose age is above 10 years
  • premature babies with birth weight under 1500 grams
  • Any child with a tumor pathology, a systemic disease, or whose serology (viral) would be known as positive (HIV 1 and 2, hepatitis B, C, ...).
  • Any child following a long term treatment.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Grundvidenskab
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Andet: 0-1 year old child
Adipose tissue sample in 0-1 year old child with an act of surgery settled by cure of inguinal hernia, or by vesico-ureteral ebb by abdominal way
Procedure: adipose tissue sample
adipose tissue sample
Andet: >1-10 year old child
Adipose tissue sample in >1-10 year old child with an act of surgery settled by cure of inguinal hernia, or by vesico-ureteral ebb by abdominal way
Procedure: adipose tissue sample
adipose tissue sample

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Efficacity of treatment as assessed by surface healed skin (cm2) in animal model
Tidsramme: 1 month after injection
Efficacy of ADSC in animal model healing
1 month after injection
Efficacity of treatment as assessed by surface healed skin (cm2) in animal model
Tidsramme: 1 year after injection
Efficacy of ADSC in animal model healing
1 year after injection
Security as assessed by absence of tumorigenicity at injection site in animal model
Tidsramme: 1 month after injection
Clinical security of treatment
1 month after injection
Security as assessed by absence of tumorigenicity at injection site in animal model
Tidsramme: 1 year after injection
Clinical security of treatment
1 year after injection

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

University Hospital, Toulouse

Efterforskere

  • Ledende efterforsker: Philippe GALINIER, MD, PhD, Chirurgie pédiatrique - Hôpital des enfants

Publikationer og nyttige links

Den person, der er ansvarlig for at indtaste oplysninger om undersøgelsen, leverer frivilligt disse publikationer. Disse kan handle om alt relateret til undersøgelsen.

Generelle publikationer

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart

1. januar 2012

Primær færdiggørelse (Faktiske)

1. januar 2015

Studieafslutning (Faktiske)

1. januar 2015

Datoer for studieregistrering

Først indsendt

10. juli 2015

Først indsendt, der opfyldte QC-kriterier

17. maj 2016

Først opslået (Skøn)

20. maj 2016

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

12. maj 2017

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

10. maj 2017

Sidst verificeret

1. maj 2017

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • 11 228 02
  • 2011-A01469-32 (Registry Identifier: Agence National du Médicament et des Produits de santé)

Plan for individuelle deltagerdata (IPD)

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Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

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