Clinical Research Directory

Pyloric Sphincter Abnormalities in Patients With Gastroparesis Symptoms

The overall objective of this study is to determine if there are pyloric sphincter abnormalities in patients with gastroparesis symptoms and determine how prevalent these abnormalities are using tests to assess the pyloric sphincter - endoluminal functional luminal imaging probe (Endoflip™), water load satiety testing (WLST), and high-resolution cutaneous electrogastrography (HR-EGG) using Gastric Alimetry™ System.

Correlation Between Advanced Glycation End Products and Gastric Motility Disorder in Diabetes Gastroparesis

This study is a prospective observational study. The study will explore the correlation between advanced glycation end products and gastric motility disorder in diabetic gastroparesis（DGP) through the collection of blood and gastric tissue samples and relevant data of patients with DGP and control group patients without diabetes history and gastroparesis symptoms.

Washed Microbiota Transplantation for Diabetic Gastroparesis

This is a randomized controlled trial to explore the efficacy and safety of washed microbiota transplantation (WMT) for diabetic gastroparesis (DGP) patients.

Thoracic Neuromodulation for Diabetic Gastroparesis

The global incidence of diabetes is rising. Gastroparesis is a significant complication of diabetes that results in debilitating symptoms and affects quality of life. Current treatment options for diabetic gastroparesis are limited. Significant visceral afferent neuropathy is associated with diabetic gastroparesis and sympathetic overactivity is seen in nausea, both type 1 and 2 diabetes, and diabetic complications. These dysfunctions can result from neuropathy affecting the thoracic spinal nerves that carry both general visceral afferents and preganglionic sympathetic efferents in the greater splanchnic nerve, innervating the foregut. Neuromodulation of the thoracic spinal nerves should improve diabetic gastroparesis symptoms and restore quality of life by improving neuropathy and gastric sensori-motor function. The investigators has developed and refined a novel, noninvasive, neuromodulation treatment, Thoracic Spinal Nerve Magnetic Neuromodulation Therapy (ThorS-MagNT). In an uncontrolled trial of adults with diabetic gastroparesis, ThorS-MagNT the investigators demonstrated feasibility, acceptability, and improvement of DGp symptoms. Whether active neuromodulation is better than sham therapy and the optimal frequency of treatment are not known. The investigators propose to conduct a dose-ranging, sham-controlled trial (pilot NIH Stage 1b) to assess the effect of ThorS-MagNT on symptom severity and quality of life in diabetic gastroparesis (TNM-DGp Trial). The investigators will test the hypothesis that ThorS-MagNT will improve visceral afferent neuropathy, autonomic and gastric dysfunction, compared to sham. The investigators will also test whether any improvements are due to neuromodulation of (a) peripheral spino-gut axis or (b) central structures of the limbic system and autonomic network, or both. Successful completion of this pilot study will provide insights into gastroparesis disease processes and inform mechanisms of action of neuromodulation therapy in addressing disruption of the brain-gut axis. Expected outcomes include development of a novel, non-invasive, safe and efficacious therapy for diabetic gastroparesis. These efforts will inform future true efficacy testing in an NIH Stage 2 trial using multiphase optimization strategy (MOST) design.

Open Label Safety Study of Tradipitant in Idiopathic and Diabetic Gastroparesis

This is a multicenter, open label, 3-month safety study with tradipitant in patients with idiopathic and diabetic gastroparesis.

Body Surface Gastric Mapping to Evaluate Patients With Upper Gastrointestinal Symptoms and Controls

This is an analytical validation observational cohort study is designed to provide evidence of: safety and reliability of Body Surface Gastric Mapping using the Gastric Alimetry System (GAS), normal reference values, and correlation of metrics with patient symptoms among healthy adults and patients diagnosed with upper abdominal motility disorders. GAS is intended to record, store, view and process gastric myoelectrical activity. This is a proprietary system consisting of multiple electrodes arranged on an array that is placed precisely over the stomach, a reader to collect the electrode measurements and a smart tablet application to track patient reported symptoms. Participants meeting inclusion and exclusion criteria will continue fasting for 30 minutes after the Gastric Alimetry System has been applied and begun measuring, eat a standard study meal within 10 minutes and remain quietly seated, reclining, for 4 hours as the GAS continues to collect data. The array is removed and the abdomen is examined for evidence of skin effects.

Washed Microbiota Transplantation Alleviates Diabetic Gastrointestinal Motility Disorders: an Efficacy and Safety Study

The goal of this clinical trial is to learn about effectiveness and safety of washing microbiota transplantation in diabetic gastrointestinal motility disorders participant population. The main questions it aims to answer are: * The risk factors of diabetic gastrointestinal motility disorders in routine clinical data or biochemical tests. * The composition of gut microbiota in diabetic gastrointestinal motility disorders patients and potential pathogenic bacteria. * The efficacy of washing microbiota transplantation in the clinical treatment of diabetic gastrointestinal motility disorders patients and potential factors that may influence treatment outcomes. * The potential mechanisms of washing microbiota transplantation in treating diabetic gastrointestinal motility disorders patients. Participants will be collected fasting venous blood and random stool samples before treatment and at week 12 post-treatment, conducting scale assessments before treatment and at weeks 1, 4, and 12 post-treatment.

Gastroparesis in type2 Diabetic Patient

Gastroparesis is defined by objective delaying of gastric emptying without any evidence of mechanical obstruction. Diabetic gastroparesis is a potential complication that occurs in the setting of poorly controlled diabetes, resulting from dysfunction in the coordination and function of the autonomic nervous system, neurons, and specialized pacemaker cells (interstitial cells of Cajal, ICC) of the stomach and intestine, and the smooth muscle cells of the gastrointestinal tract