Effects of Lipids on Gastric EmptyingNCT01681459
Effects of Lipids on Gastric Emptying, Satiety Hormones, and Appetite in Severe Overweight
An observational study of Effects of Lipids on Gastric Emptying and Effects of Lipids on Satiety Hormones, run by Hvidovre University Hospital at 1 site in Denmark.
Trial summary
In lean subjects, free fatty acid (FFA) promotes gut hormone release, delays gastric emptying, and reduces appetite and energy intake more than an isocaloric load of triglyceride (TG). In obesity, the gastrointestinal sensitivity to food components may be reduced. Read more about this study
- Who is it for?
- Ages 25 to 65 years, men onlyHealthy volunteers can take part
- Conditions the study is for
- Effects of Lipids on Gastric Emptying, Effects of Lipids on Satiety Hormones, Effects of Lipids on Appetite
- How many people
- 20 participants
- Where
- 1 siteDenmark
- Study dates
- Jan 2012to Jan 2015
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 25 to 65 years
- Men only
- Healthy volunteers accepted
- Adult, Older adult
Study population: 10 lean subjects and 10 severely obese subjects
Who may be able to join
- Lean subjects: BMI 20-25
- Severely obese subjects: BMI > 50
Who cannot join
- -Gastrointestinal symptoms
Trial locations and contacts
1 site in 1 country.
About this study
In lean subjects, free fatty acid (FFA) promotes gut hormone release, delays gastric emptying, and reduces appetite and energy intake more than an isocaloric load of triglyceride (TG). In obesity, the gastrointestinal sensitivity to food components may be reduced. In this study, the investigators compare the effects of the FFA oleic acid and the TG olive oil on gut hormone secretion, gastric emptying, appetite sensation, and subsequent energy intake in lean and severely obese subjects.
Read the detailed description
Nutritional lipid within the lumen of small intestine causes a range of physiological responses that suppress appetite and reduce energy intake. Thus, intestinal fat promotes the release of gastrointestinal hormones such as cholecystokinin (CCK), peptide-YY (PYY) and glucagon-like peptide-1 (GLP-1) that modulate gastrointestinal motility and are important for appetite regulation and food consumption.
The effect of ingested fat on gut hormone secretion is highly dependent on the lipolysis of triglycerides (TGs) into free fatty acids (FFAs). It has been demonstrated that adding a lipase inhibitor (tetrahydrolipstatin) to a pure fat meal accelerates gastric emptying and reduces CCK release. Furthermore, administration of tetrahydrolipstatin with an intraduodenal infusion of TG attenuates gastric relaxation and antro-pyloro-duodenal motility and reduces the release of CCK, PYY, and GLP-1 compared to TG alone. Finally, intragastric administration of FFA delays gastric emptying and augments the release of CCK and PYY compared to an isocaloric administration of TG. Hence, the presence of FFAs more than TGs within the small intestine seem to play a pivotal role in the regulation of appetite and energy intake.
Whereas acute intake of FFA represents a potent stimulus for suppression of appetite and energy intake, epidemiological evidence relates long-term high dietary fat intake with obesity and it is known that obese individuals prefer food with high fat content. The mechanisms behind this paradox remain unclear. However, sustained high fat-diet may change gastromotor responses and gut hormonal release to a dietary load of lipids. Moreover intraduodenal sensitivity to FFA (oleic acid) was recently reported to be reduced in obese subjects. The reduced appetite and energy intake after FFAs compared to TGs may, therefore, not apply to obese subjects.
The aims of this study are to evaluate gastric emptying, gut hormone secretion, appetite sensation, and energy intake after isocaloric gastric administration of FFA (oleic acid) and TG (olive oil) in lean and severely obese subjects.
- Conditions
- Effects of Lipids on Gastric Emptying, Effects of Lipids on Satiety Hormones, Effects of Lipids on Appetite
- Keywords
- Free fatty acid, Triglyceride, Gastric emptying, Satiety hormones, Appetite, Severe obesity
- Medical subject headings
- Obesity, Morbid
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Sep 2012 (estimated)
- Study startJan 2012
- Primary completionDec 2014
- Study completionJan 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Effects of Lipids on Gastric EmptyingStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Prospective
- Enrolment
- 20 participants (actual)
Sponsor and investigators
- Lead sponsor
- Hvidovre University Hospital
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jan Lysgaard Madsen, Hvidovre University Hospital
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01681459
- Sponsor's protocol ID
- H-4-2011-060
- Status last verified
- Feb 2016
- First submitted
- 5 Sep 2012
- Last updated
- 19 Feb 2016
- Results posted
- No
- Data monitoring committee
- Yes
Study at a glance
From the registry record, last updated by the sponsor on 19 Feb 2016. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Lipids on Gastric Emptying, Satiety Hormones, and Appetite in Severe Overweight
- ClinicalTrials.gov ID
- NCT01681459
- Acronym / sponsor ID
- H-4-2011-060
- Conditions
- Effects of Lipids on Gastric Emptying, Effects of Lipids on Satiety Hormones, Effects of Lipids on Appetite
- Keywords
- Free fatty acid, Triglyceride, Gastric emptying, Satiety hormones, Appetite, Severe obesity
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 20 participants (actual)
- Lead sponsor
- Hvidovre University HospitalUniversity, hospital or other
- Study start
- Jan 2012
- Primary completion
- Dec 2014 (actual)
- Study completion
- Jan 2015 (actual)
- First posted
- 10 Sep 2012 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
In lean subjects, free fatty acid (FFA) promotes gut hormone release, delays gastric emptying, and reduces appetite and energy intake more than an isocaloric load of triglyceride (TG). In obesity, the gastrointestinal sensitivity to food components may be reduced. In this study, the investigators compare the effects of the FFA oleic acid and the TG olive oil on gut hormone secretion, gastric emptying, appetite sensation, and subsequent energy intake in lean and severely obese subjects.
Detailed description
Nutritional lipid within the lumen of small intestine causes a range of physiological responses that suppress appetite and reduce energy intake. Thus, intestinal fat promotes the release of gastrointestinal hormones such as cholecystokinin (CCK), peptide-YY (PYY) and glucagon-like peptide-1 (GLP-1) that modulate gastrointestinal motility and are important for appetite regulation and food consumption.
The effect of ingested fat on gut hormone secretion is highly dependent on the lipolysis of triglycerides (TGs) into free fatty acids (FFAs). It has been demonstrated that adding a lipase inhibitor (tetrahydrolipstatin) to a pure fat meal accelerates gastric emptying and reduces CCK release. Furthermore, administration of tetrahydrolipstatin with an intraduodenal infusion of TG attenuates gastric relaxation and antro-pyloro-duodenal motility and reduces the release of CCK, PYY, and GLP-1 compared to TG alone. Finally, intragastric administration of FFA delays gastric emptying and augments the release of CCK and PYY compared to an isocaloric administration of TG. Hence, the presence of FFAs more than TGs within the small intestine seem to play a pivotal role in the regulation of appetite and energy intake.
Whereas acute intake of FFA represents a potent stimulus for suppression of appetite and energy intake, epidemiological evidence relates long-term high dietary fat intake with obesity and it is known that obese individuals prefer food with high fat content. The mechanisms behind this paradox remain unclear. However, sustained high fat-diet may change gastromotor responses and gut hormonal release to a dietary load of lipids. Moreover intraduodenal sensitivity to FFA (oleic acid) was recently reported to be reduced in obese subjects. The reduced appetite and energy intake after FFAs compared to TGs may, therefore, not apply to obese subjects.
The aims of this study are to evaluate gastric emptying, gut hormone secretion, appetite sensation, and energy intake after isocaloric gastric administration of FFA (oleic acid) and TG (olive oil) in lean and severely obese subjects.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
Who may qualify
- Ages
- 25 to 65 years
- Sex
- Male only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- 10 lean subjects and 10 severely obese subjects
Key inclusion criteria (2 listed)
- Lean subjects: BMI 20-25
- Severely obese subjects: BMI > 50
Key exclusion criteria (1 listed)
- -Gastrointestinal symptoms
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Feb 2016.
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Effects of Lipids on Gastric Emptying and Effects of Lipids on Satiety Hormones, run by Hvidovre University Hospital at 1 site in Denmark.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 2 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 19 Feb 2016. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Denmark. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Feb 2016.