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Bone Microarchitecture Evaluation by HR-pQCT in Youngs Who Developed AN in Peri or Prepubertal Period. (AMOS)

20. februar 2018 opdateret af: Centre Hospitalier Universitaire de Saint Etienne

Monocentric Study Evaluating Bone Microarchitecture by High Resolution Quantitative Computerized Tomography (HR-pQCT) in Young Adults and Adolescents Who Developed Anorexia Nervosa (AN) in Peri or Prepubertal Period.

The occurrence of anorexia nervosa (AN) during childhood or adolescence rapidly induces starvation, stop of growth and impaired mineralization of bone tissue together with an interruption of pubertal development. These consequences are initially reversible following food intake return but can lead to a more irreversible status with low height, osteoporosis and high fracture risk. The onset of the disease more and more early in life, with the first stages of puberty suggest that these consequences will be even more severe as bone resistance will be damaged by more profound effects on bone growth as well. It is therefore critical to evaluate these bone metabolism alterations in order to better manage these patients.

At every age and in every clinical circumstance either physiologic or pathologic, high resolution peripheral quantitative computerized tomography (HRpQCT) provides an evaluation of bone microarchitecture that is more informative than the global quantitative assessment given by conventional Dual Energy X-ray Absorptiometry) DEXA, with a better estimate of clinical fracture risk.

Here, we propose to measure cortical parameters, such as cortical thickness which plays a key role in bone biomechanical strength in young adults aged between 20 and 30 years-old, who had developed AN as early as the during the first stages of puberty but no longer present, compared to age-and sex-matched healthy volunteers. Other micro-architectural parameters will also be studied. In an exploratory phase, we will evaluate these bone microarchitectural parameters together with bone biological turnover markers and markers of sexual maturation in adolescents or young adults 20 years-old or less, undernourished and currently managed for AN.

Studieoversigt

Status

Afsluttet

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Faktiske)

34

Fase

  • Ikke anvendelig

Kontakter og lokationer

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

Studiesteder

  • Frankrig
      • Saint-etienne, Frankrig, 42000
        • CHU de Saint-Etienne

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

10 år til 30 år (Barn, Voksen)

Tager imod sunde frivillige

Ingen

Køn, der er berettiget til at studere

Alle

Beskrivelse

Inclusion Criteria:

  • Patients over 20 years old:

    • Age > 20 and < 30 years old
    • Patients managed for AN in the pediatric or endocrinology of the university hospital of St-Etienne
    • Patients who developed AN as early as the during the first stages of puberty defined by Tanner stage 1 to 4, with a diagnosis of AN based on DSM-IV current criteria:
    • Weight loss : deny of maintaining body weight over minimal normal threshold (85 % age and height matched)
    • Intense fear of gaining weight or becoming obese despite weight insufficiency;
    • Impaired perception of weight or dysmorphophobia;
    • Excessive role of weight or body shape in self-esteem or deny of current leanness;
    • Secondary amenorrhea during 3 or more menstrual cycles in young girls or primary amenorrhea
    • Duration of AN of at least 6 months
    • BMI >85% of theoretical BMI (efficient renutrition)

  • Patients less than 20 years old :

    • Age > 10 and < 20 years old
    • Patients managed for AN in the pediatric or endocrinology of the university hospital of St-Etienne
    • Patients who developed AN as early as the during the first stages of puberty defined by Tanner stage 1 to 4, with a diagnosis of AN based on DSM-IV current criteria:
    • Weight loss : deny of maintaining body weight over minimal normal threshold (85 % age and height matched)
    • Intense fear of gaining weight or becoming obese despite weight insufficiency;
    • Impaired perception of weight or dysmorphophobia;
    • Excessive role of weight or body shape in self-esteem or deny of current leanness;
    • Secondary amenorrhea during 3 or more menstrual cycles in young girls or primary amenorrhea
    • Duration of AN of at least 6 months

Exclusion Criteria:

  • Renal insufficiency
  • Cushing
  • Dysthyroidism
  • Inflammatory disease
  • Pregnancy
  • Lack of consent
  • Subject under legal protection

Studieplan

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

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Andet
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Patients 20 - 30 years-old
HR-pQCT and DEXA for measure bone quality and quantity
Enhed: HR-pQCT
The Xtrem CT scanco device is a HR-pQCT used for 3D bone measurements at the tibia and the radius levels in human
Andre navne:
  • Xtrem CT scanco
Enhed: DEXA
The Lunar DEXA (Dual Energy X-ray Absorptiometry) is a third generation multi-captor DEXA device that allows short duration measurements (< 15 min). It measures Bone Mineral Density at the spine (L1-L4) and the femoral neck
Eksperimentel: Patients 10 - 20 years-old
Blood samples, HR-pQCT and DEXA for measure bone quality and quantity
Andet: Blodprøver
Enhed: HR-pQCT
The Xtrem CT scanco device is a HR-pQCT used for 3D bone measurements at the tibia and the radius levels in human
Andre navne:
  • Xtrem CT scanco
Enhed: DEXA
The Lunar DEXA (Dual Energy X-ray Absorptiometry) is a third generation multi-captor DEXA device that allows short duration measurements (< 15 min). It measures Bone Mineral Density at the spine (L1-L4) and the femoral neck

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Cortical thickness
Tidsramme: Day 1
Cortical thickness (in mm) is a composite outcome measured with HR pQCTon 3D images of distal radius and distal tibia.
Day 1

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Number of patients with bone degradation
Tidsramme: Day 1
Bone degradation is a composite outcome measured by cortical and architectural parameters measured with HR pQCTon 3D images of distal radius and distal tibia. The parameters are : Total volumetric bone mineral density (mg/ccm HA), Trabecular volumetric bone mineral density (mg/ccm HA), Cortical volumetric bone mineral density (mg/ccm HA), Number of bone trabeculae (1/mm), Trabecular thickness (mm) Cortical thickness (mm), Trabecular spacing (mm), Trabecular distribution (mm)
Day 1
number of patients with osteoporosis
Tidsramme: Day 1
Osteoporosis is measured with DEXA. DEXA measure the Bone Mineral Density (g/cm2)
Day 1
Clinical and biological phenotype of AN patients 20 years-old or less
Tidsramme: Day 1
Clinical and biological phenotype of AN patients 20 years-old or less is a composite factor : Pubertal stage at disease onset, Duration of AN, Height shortening compared to optimal genetically defined height, Serum levels of FGF23, Serum levels of IGF 1, Serum levels of sexual steroids (FSH, LH, oestradiol, testosterone, SeBG, AMH, inhibin B), Serum levels of bone formation and resorption markers (cross laps, osteocalcin, total alkaline phosphatases), Serum levels of leptin, Bone mineral density measured by DXA
Day 1

Samarbejdspartnere og efterforskere

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

Sponsor

Centre Hospitalier Universitaire de Saint Etienne

Efterforskere

  • Ledende efterforsker: Thierry THOMAS, MD PhD, CHU de Saint-Etienne

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 (Faktiske)

23. november 2015

Primær færdiggørelse (Faktiske)

29. november 2017

Studieafslutning (Faktiske)

29. november 2017

Datoer for studieregistrering

Først indsendt

17. august 2015

Først indsendt, der opfyldte QC-kriterier

17. august 2015

Først opslået (Skøn)

18. august 2015

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

22. februar 2018

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

20. februar 2018

Sidst verificeret

1. februar 2018

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Yderligere relevante MeSH-vilkår

Andre undersøgelses-id-numre

  • 1408082
  • 2015-A00100-49 (Anden identifikator: ANSM)

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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