- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning NCT01824797
Bone Metabolism After Bariatric Surgery
Determining Changes in Bone Metabolism After Bariatric Surgery in Postmenopausal Women
The purpose and objective of this study is to determine the changes in bone metabolism after bariatric surgery in postmenopausal women.
This is a prospective cohort study that will enroll up to 40 postmenopausal female subjects with class II and III obesity from the Duke Center for Metabolic and Weight Loss Surgery. The study team will enroll subjects that are already being scheduled for either sleeve gastrectomy or Roux-en-Y gastric bypass. The osteoclast activity, the osteoblast activity, and the bone mineral density will be measured in all subjects preoperatively and 12 months postoperatively through research specific blood tests and Dual energy x-ray Absorptiometry (DEXA) scans.
The primary endpoints are change in osteoclast activity as measured by C-terminal telopeptide of type I collagen and change in bone density as measured by DEXA scan. These are continuous variable and given the small sample size the investigators will use a nonparametric Wilcoxon rank-sum test to compare the difference in one year change in these variables. There is a slight risk of loss of confidentiality. Every effort will be made to protect all PHI. There is also the risk of increased exposure to radiation from the DEXA scans performed twice with each subjects participating in the study.
Studieöversikt
Status
Betingelser
Studietyp
Inskrivning (Faktisk)
Kontakter och platser
Studieorter
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North Carolina
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Durham, North Carolina, Förenta staterna, 27704
- Duke Center for Metabolic and Weight Loss Surgery
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Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
Tar emot friska volontärer
Kön som är behöriga för studier
Testmetod
Studera befolkning
Beskrivning
Inclusion Criteria:
- Postmenopausal women as determined by having a history of no menstrual bleed for greater than one year.
- Body Mass Index ≥35 kg/m² and stable weight for the previous 3 months.
- Able to speak and read English.
- Being scheduled for either Roux-en-Y gastric bypass or sleeve gastrectomy.
Exclusion Criteria:
- A documented history of osteoporosis or currently receiving medical treatment for osteoporosis with bisphosphonates, teriparatide, raloxifene, or denosumab.
- Weight greater than 295 pounds as this is the weight limit for our Dual-energy X-ray absorptiometry machine.
- Current or past (less than 1 year from enrollment) usage of estrogen hormone replacement therapy.
- Current smoker
- Any history of glucocorticoid use greater than one year in duration or current use of glucocorticoids.
Studieplan
Hur är studien utformad?
Designdetaljer
Kohorter och interventioner
Grupp / Kohort |
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Roux-en-Y Gastric Bypass
Changes in bone mineral density will be determined by comparing a peroperative DEXA scan with a one year postoperative DEXA scan on postmenopausal subjects who have already planned to undergo Roux-en-Y gastric bypass or sleeve gastrectomy.
Serum will be collected from subjects preoperatively and 12 months postoperatively.
The serum will be used at the completion of the study to run enzyme-linked immunosorbent assay (ELISA) to determine biochemical changes in bone metabolism.
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Sleeve Gastrectomy
Changes in bone mineral density will be determined by comparing a peroperative DEXA scan with a one year postoperative DEXA scan on postmenopausal subjects who have already planned to undergo Roux-en-Y gastric bypass or sleeve gastrectomy.
Serum will be collected from subjects preoperatively and 12 months postoperatively.
The serum will be used at the completion of the study to run enzyme-linked immunosorbent assay (ELISA) to determine biochemical changes in bone metabolism.
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Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
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Changes in Bone Mineral Density
Tidsram: Baseline to one year postoperative
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Changes in bone mineral density will be determined by comparing a peroperative DEXA scan with a one year postoperative DEXA scan on postmenopausal subjects who have already planned to undergo Roux-en-Y gastric bypass or sleeve gastrectomy.
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Baseline to one year postoperative
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Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
---|---|---|
Biochemical Changes in Bone Metabolism
Tidsram: Baseline to one year postoperative
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Serum will be collected from the subjects preoperatively and 12 months postoperatively.
The serum will be used at the completion of the study to run enzyme-linked immunosorbent assay (ELISA) to determine biochemical changes in their bone metabolism.
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Baseline to one year postoperative
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Samarbetspartners och utredare
Sponsor
Samarbetspartners
Utredare
- Huvudutredare: Daniel Guerron, MD, Duke University
Publikationer och användbara länkar
Användbara länkar
Studieavstämningsdatum
Studera stora datum
Studiestart (Faktisk)
Primärt slutförande (Faktisk)
Avslutad studie (Faktisk)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Uppskatta)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
Andra studie-ID-nummer
- Pro00044248
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Kliniska prövningar på Fetma
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SanionaAvslutadHypothalamic Injury-induced Obesity (HIO)Danmark