Clinical Trials Logo

Clinical Trial Summary

The purpose of this study is to determine the effects of two tricyclic antidepressant agents (TCAs), amitriptyline and desipramine, on gastric emptying and gastric accommodation using a newly developed scintigraphic test that simultaneously measures both gastric emptying and gastric volume (accommodation). These two tricyclic antidepressant agents are commonly used at low doses to treat patients with refractory functional dyspepsia.


Clinical Trial Description

The normal control subjects will be randomized to receive either amitriptyline or desipramine as the tricyclic antidepressant agent, with 30 subjects per group. Subjects will undergo two outpatient gastric emptying/volume tests and two satiety tests; one of each after 7 days of treatment with oral consumption of the study agent and the other one of each after 7 days of treatment with placebo. The order of the treatments (active drug or placebo) will be randomized with 7 days washout between the studies. During the study, the subjects will consume their regular diet. Subjects will also be randomized to receive either amitriptyline 25 mg po qhs as the active drug or desipramine 25 mg po qhs as the active drug. Side effects of the agents will be monitored during the study. Each subject will undergo a brief history and physical exam prior to entering the study. The subject will have height and weight measured. A questionnaire will be administered to the subject inquiring about gastrointestinal symptoms and medical history. This is to screen for a history of underlying pulmonary, cardiovascular, or gastrointestinal disease. Females will be studied only during the follicular phase (days 1-10) of the menstrual cycle, to minimize the effect of the menstrual cycle on motility (Wald, at al). In addition, females will be given pregnancy screening with a urine beta-human chorionic gonadotropin pregnancy test (Sure-Vue; Fisher Scientific, Inc) prior to the start of the study. For the simultaneous gastric volume/emptying tests, subjects will be studied in the fasting condition. The study subject history and physical examination form will be filled out which captures information on symptoms for the last week. An intravenous line will be started. The subject will take study medication with a small sip of water. After 10 minutes, 10 mCi 99mTc pertechnetate will be infused intravenously over 30 seconds. Imaging of the stomach will be performed with a gamma camera 20 minutes after injection with both anterior and posterior imaging followed by SPECT imaging using the General Electric Dual Head MAXXUS (General Electric Medical Systems) connected to a General Electric Starcam 4000i computer. A total of 360o rotation around the subject will be obtained using a circular orbit (32 stops at 15 sec per stop) with the heads for the camera close to the subject. After this, the patient will ingest an egg sandwich labeled with 300 µCi 111Indium-oxine cooked into the eggs to label the solid material. The subject will consume 300 ml of unlabelled water. Imaging will then commence immediately after meal ingestion (time 0) for 111In counts to assess solid-phase gastric emptying using both anterior and posterior imaging. This will be followed immediately by imaging for the 99mTc counts to assess gastric volumes. Imaging for 99mTc will be performed with SPECT 3-D imaging. These will be repeated at 20, 40, 60, 80, 100, 120, 150, 180, 210, and 240 minutes after the meal ingestion. Our prior studies show that 4 hour gastric emptying best characterizes gastric emptying. Peak gastric accommodation occurs at 0-40 minutes. At the time of each imaging, symptoms will be monitored. Symptoms of abdominal fullness, nausea, abdominal discomfort, and bloating will be graded by the study subject from 0 (none) to 5 (severe). In addition, an inquiry into possible side effects to TCAs (sedation, confusion, disturbed concentration, dry mouth, constipation, nausea, and urinary retention) will be made. On the next day, the subject will return in a fasting condition for the satiety test. The methods are similar to those of Tack et al and Chial et al. The subject will take their study medication. After 30 minutes, the subject will drink the nutrient drink Ensure at a rate of 100 ml every 5 minutes until the subject feels completely full. After each 100 ml, symptoms will be monitored, scoring the symptoms of satiety (fullness), nausea, abdominal discomfort, and bloating on a scale of (0-5). The volume of Ensure consumed by the subject will be recorded. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT00220844
Study type Interventional
Source Temple University
Contact
Status Terminated
Phase N/A
Start date September 2005
Completion date June 2014

See also
  Status Clinical Trial Phase
Recruiting NCT06094062 - Smartphone App-assisted PPI N/A
Completed NCT03941288 - Efficacy and Safety of Cannabidiol for Gastroparesis and Functional Dyspepsia Phase 2
Completed NCT04429802 - The Effect of Prucalopride (Resolor®) on Gastric Motor Function and Gastric Sensitivity N/A
Not yet recruiting NCT06369753 - Visible Abdominal Distension N/A
Withdrawn NCT02863822 - Study to Evaluate Dietary Modification in Patients With Functional Dyspepsia. N/A
Recruiting NCT00978159 - Esomeprazole or Famotidine in the Management of Aspirin Related Non-Ulcer Dyspepsia Phase 4
Completed NCT00723502 - Efficacy and Safety Study of Finafloxacin Used in Helicobacter Pylori Infected Patients Phase 2
Completed NCT00217347 - Evaluation of Efficiency of Esophageal Capsule Endoscopy in the Screening of Patients With Gastroesophageal Reflux Disease or Dyspepsia as Compared to Upper Endoscopy N/A
Completed NCT00148603 - Montelukast in the Treatment of Duodenal Eosinophilia N/A
Completed NCT00232037 - Extension Study to Assess the Long-Term Safety of Tegaserod in Women With Symptoms of Dyspepsia Phase 3
Completed NCT00164996 - Ultrathin Versus Conventional Esophagogastroduodenoscopy in Unsedated Patient With or Without Local Pharyngeal Anaesthesia Phase 3
Completed NCT00110968 - Long-term Safety and Efficacy of Itopride Hydrochloride (HCl) in Patients Suffering From Functional Dyspepsia Phase 3
Completed NCT00232102 - Extension Study to Assess the Long-Term Safety of Tegaserod in Women With Symptoms of Dyspepsia Phase 3
Recruiting NCT05718960 - Traditional Dietary Advice Versus Reassurance-alone in Postprandial Functional Dyspepsia N/A
Terminated NCT04247100 - A Study of Randomized Sham-control Auricular TENS Unit Stimulation in Pediatric Functional Gastrointestinal Disorders N/A
Completed NCT05750641 - The Efficacy of Removal of Animal Milk From the Diet in Functional Dyspepsia: A Cross-sectional Study
Completed NCT04697641 - Helicobacter Pylori Eradication in Functional Dyspepsia N/A
Completed NCT03252743 - ICBT for Pain-predominant FGIDs in Children and Adolescents: an Implementation Study. N/A
Recruiting NCT04918329 - Functional Digestive Disorders Observatory
Recruiting NCT01696734 - Domperidone in Treating Patients With Gastrointestinal Disorders Phase 3