Fat Metabolism Following Chemotherapy in Breast Cancer
This study has been terminated.
First Posted: July 2, 2013
Last Update Posted: February 3, 2016
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Information provided by (Responsible Party):
Marielle PKJ Engelen, PhD, Texas A&M University
Following chemotherapy, breast cancer patients primarily gain fat mass and lose muscle mass. Both depletion of muscle and an increase of fat mass in breast cancer patients are related to short survival, and decreased skeletal muscle mass and function may result in fatigue and inactivity, which contributes to fat mass changes and can be responsible for chemo-toxicity and increased mortality. The purpose of this study is to provide detailed insight in chemotherapy related changes in lipid metabolism and gut digestion and absorption of fat in breast cancer patients compared to matched healthy controls. This will provide required information that is necessary to implement new strategies to develop optimal nutritional regimen in breast cancer patients. The hypothesis is that chemotherapy in breast cancer is related to altered gut function and absorption and to increases in fat synthesis that lead to fat accumulation. In addition, we will examine the effect of cancer, chemotherapy, and gender by comparing fat digestion/absorption and fat metabolism of the breast cancer before and after chemotherapy, to aged matched healthy female and male controls.
||Observational Model: Cohort
Time Perspective: Prospective
||The Effect of Chemotherapy on Fat Metabolism and Digestion and Function in Breast Cancer Patients.
Primary Outcome Measures:
Biospecimen Retention: Samples With DNA
Secondary Outcome Measures:
- Adipose tissue triglyceride synthesis [ Time Frame: pre and 4 hours post meal ]
changes in adipose tissue triglyceride synthesis before and after a meal
- Adipose tissue de novo lipogenesis [ Time Frame: pre and 4 hours post meal ]
changes in adipose tissue de novo lipogenesis before and after a meal
- Adipose tissue lipolysis - glycerol rate of appearance [ Time Frame: Pre meal ingestion and 15, 30, 45, 60, 75, 90, 105, 120, 150, 180, 210, 240, 270, and 300 min post meal ingestion ]
changes in adipose tissue lipolysis before and after a meal. plasma enrichment of glycerol.
- Fat digestion and absorption [ Time Frame: Pre meal ingestion and 15, 30, 45, 60, 75, 90, 105, 120, 150, 180, 210, 240, 270, and 300 min post meal ingestion ]
defining fat digestion and absorption after a meal. Enrichment in palmitic acid and tripalmitin fatty acids in plasma
- Skeletal muscle strength and endurance [ Time Frame: 1 day ]
Difference in leg strength and fatigue
- Insulin response to feeding [ Time Frame: pre and up to 5 hours post meal ]
acute changes from postabsorptive state to postprandial state
- Body composition [ Time Frame: 1 day ]
body composition will be determined by dual-energy X-ray absorptiometry and by deuterated water dilution technique. Plasma deuterium enrichments will be determined.
- Physical activity questionnaire [ Time Frame: 1 day ]
Outcome of physical activity assessment in breast cancer patients and healthy controls in relation to the fat metabolism
Urine, adipose tissue, serum, plasma
| Study Start Date:
| Study Completion Date:
| Primary Completion Date:
||October 2015 (Final data collection date for primary outcome measure)
Breast Cancer Patients
Breast cancer patients to be studied before and after chemotherapy
Healthy Female Controls
Healthy female controls will be compared to breast cancer patients before and after chemotherapy and to healthy male controls
Healthy Male Controls
Healthy male controls will be compared to healthy female controls to determine gender differences
This research study involves 5 visits for the breast cancer subjects and 3 visits for the healthy controls. The first visit includes the informed consent and a screening and the second and third visit for the study days before chemotherapy and the fourth and fifth visit for the study days after chemotherapy. For the first test day, 2 hours of the subjects time will be for urine and blood sample collection, and to ingest the deuterated water. Subjects are allowed to go home after and eat normally. On the second study day, subjects will arrive early that morning and a DXA scan will be performed first. For the duration of the study, subjects have to lie in the bed (except for bathroom privileges). They can watch tv or bring and use a book/tablet. The research nurse or study staff will be present in the human subject area to assist the subject if necessary. Subjects are not allowed to eat or drink during the second test day, except for the test drink (meal) and water. One IV catheter will be placed in a vein of the arm/hand for blood draws. The hand will be placed in a hot box during blood collection. Another IV catheter will be placed in the contra-lateral forearm for a primed and continuous infusion of 2H5-glycerol. Over the two day time period, a total of 100-120 ml of blood will be obtained over approximately 19 samples. Stable isotopes will be ingested on the first test day, added to the test drinks on the second test day after the second hour, and infused on the second day. On the second test day, subjects will fill out questionnaires and perform muscle function tests. After completion of the study, we will provide the subject with a meal.
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|Ages Eligible for Study:
||30 Years and older (Adult, Senior)
|Sexes Eligible for Study:
|Accepts Healthy Volunteers:
Subjects with breast cancer will be recruited when visiting a medical or cancer clinic in and outside the surrounding area of College Station. Cancer patients and healthy subjects will also be recruited by responding to distributed flyers in the community in the College Station area; for example in hospital/clinic waiting areas, clinic rooms and bulletin boards at Scott & White and the CSMC or any other hospital. Other general recruitment material in relation to the nutrition research that the research group performs at Texas A&M can be placed on bulletin boards at Scott & White and the CSMC.
Inclusion criteria cancer subjects:
- Diagnosed with breast cancer
- Scheduled for chemotherapy
- Ability to sign informed consent
- Age 30 years and older
- Ability to lie in supine position for 7 hours
Inclusion criteria healthy subjects:
- Healthy male & female according to the investigator's or appointed staff's judgment
- Age 30 years or older
- No diagnosis of cancer
- Presence of fever within the last 3 days
- Untreated metabolic diseases including hepatic or renal disorder
- Presence of acute illness or metabolically unstable chronic illness
- Use of nutritional supplements within 5 days of first test day
- Any other condition according to the PI or nurse that would interfere with the study or safety of the patient
- Failure to give informed consent
- Possible) pregnancy
Information from the National Library of Medicine
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01890824
|Texas A&M University
|College Station, Texas, United States, 77843 |
Texas A&M University
||Marielle Engelen, Ph.D.
||Texas A&M University
||Marielle PKJ Engelen, PhD, Ph.D., Texas A&M University
History of Changes
|Other Study ID Numbers:
||June 27, 2013
||July 2, 2013
|Last Update Posted:
||February 3, 2016
Keywords provided by Marielle PKJ Engelen, PhD, Texas A&M University:
Additional relevant MeSH terms:
Neoplasms by Site