CompletedNot Applicable

Bone Metabolism After Bariatric Surgery

United States42 participantsStarted 2013-05

Plain-language summary

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.

Who can participate

Age range

40 Years

Sex

FEMALE

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

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.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Changes in Bone Mineral Density

Timeframe: Baseline to one year postoperative

Trial details

NCT IDNCT01824797

SponsorDuke University

Sponsor typeOTHER

Study typeOBSERVATIONAL

Primary completion2018-05-31

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