Effect of Weight Loss on Prostate Cancer Pathology
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
Undersøgelsestype
Undersøgelsestype
Tilmelding (Faktiske)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
California
-
West Los Angeles, California, Forenede Stater, 90073
- VA Greater Los Angeles Healthcare System, West Los Angeles, CA
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Barn
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
Inclusion Criteria:
- Subject is overweight or obese (BMI > 25 kg/m2)
- Patient with pathologically confirmed adenocarcinoma of the prostate and has elected to undergo radical prostatectomy
- Willing to delay radical prostatectomy for 5 to 8-weeks if randomized to the weight loss intervention group.
- Able to adhere to physical activity intervention (able to walk for 30 minutes without rest)
- Able to come to the VA for weight loss visits during the 5 to 8-wk study
Exclusion Criteria:
- Any one of the following: Gleason grade > 4+4, PSA > 20.
- History of ever receiving androgen deprivation therapy, antiandrogen therapy, or finasteride
- Prior prostate radiotherapy (external beam or brachytherapy) or prior cryotherapy
- Diagnosis of diabetes mellitus and on insulin**
- Current use of weight loss medications or enrolled in a diet/weight loss program
- Current use of lycopene supplements*** Significant co-morbidities (i.e. cardiac, pulmonary, liver disease, ongoing alcohol/drug abuse) Cardiac pacemaker
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Diagnostisk
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Arm 1: Weight Loss
Weight Loss Group
|
Subjects undergo a weight loss intervention prior to radical prostatectomy.
The intervention includes weekly visits with the dietician, DEXA scanning, blood draws, and anthropometrics.
|
|
Aktiv komparator: Arm 2: No Weight Loss
No Weight Loss Group
|
These subjects do not undergo a weight loss intervention prior to radical prostatectomy.
This group does undergo DEXA scanning, blood draws, and anthropometrics prior to radical prostatectomy.
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Apoptotic Index of the Highest Gleason Grade Malignant Epithelium in the Radical Prostatectomy Specimen Obtained After 8-weeks of the Dietary Intervention
Tidsramme: 8 weeks
|
The primary objective is to compare the mean apoptotic index in the radical prostatectomy malignant epithelium between the Weight Loss Group and the Control Group-No Weight Loss.
The apoptotic index will be measured in the malignant epithelium with the highest Gleason grade.
TUNEL staining was used to identify these apoptotic cells and measure the apoptotic index, which is the percent of cells stained from the sample.
|
8 weeks
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Proliferative Index in Prostate Cancer Epithelium Specimen
Tidsramme: 8 weeks
|
The proliferative index in prostate cancer epithelium obtained from the radical prostatectomy specimen.
This index was procured by staining the Ki67 protein to measure cell proliferation.
(Note: Ki67 is a common indicator of cell proliferation.)
|
8 weeks
|
|
Change in Serum IGF-related Analytes: IGF-1
Tidsramme: baseline and post-intervention
|
This outcome is the measure of the hormone insulin-like growth factor 1 at baseline vs. post-intervention.
We measured and compared the concentration (ng/mL) of this hormone.
|
baseline and post-intervention
|
|
Change in Serum IGF-related Analytes: IGFBP-1
Tidsramme: baseline and post-intervention
|
This outcome is the measure of the protein, insulin-like growth factor binding protein 1, at baseline vs. post-intervention.
We measured and compared the concentration (ng/mL) of this protein.
|
baseline and post-intervention
|
|
Ex-vivo Mitogenic and Apoptotic Activity of Patient Sera on LNCaP Cells
Tidsramme: baseline and post-intervention
|
The BRDU assay measures proliferation of cultured cells such as LNCaP.
We expose the cells to the patient blood and see if it inhibits prostate cancer cell growth ex vivo.
We use optical density (a measure of the amount of light able to pass through the specimen) to indicate the concentration of cell proliferation.
|
baseline and post-intervention
|
|
Change in Body Weight
Tidsramme: baseline and post-intervention
|
This change in body weight is observed by DEXA, a scanner that measures total body composition.
|
baseline and post-intervention
|
|
Change in Percent Body Fat
Tidsramme: baseline and post-intervention
|
This change in percent body fat is observed by DEXA, a scanner that measures total body composition.
|
baseline and post-intervention
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Efterforskere
Efterforskere
- Ledende efterforsker: William Aronson, MD, VA Greater Los Angeles Healthcare System, West Los Angeles, CA
Datoer for undersøgelser
Studer store datoer
Studiestart
Studiestart
Primær færdiggørelse (Faktiske)
Primær færdiggørelse
Studieafslutning (Faktiske)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
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
Nøgleord
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- CLIN-012-06F
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