Active clinical trials for "Gastrointestinal Diseases"

Summary Purpose and Objective: The purpose of this study is to test the feasibility of rapid acquisition of point of care 3D ultrasound in obtaining abdominal and/or pelvic images. The study will use a newly developed acquisition method and post-processing technique to create three dimensional image models of the abdomen and/or pelvis. Study activities and population group. The study population will be a convenience sample of patients of any age presenting to the Emergency Department with complaints necessitating a clinical abdominal and/or pelvic imaging. The study intervention includes acquisition of research ultrasound images, which will not be used for clinical care, and comparison of these images with clinically obtained images. Other clinical data such as surgical and pathology reports will also be reviewed. 3.Data analysis and risk/safety issues. This is a pilot study intended to determine feasibility and to refine image reconstruction algorithms. Research images will be compared to clinical images. Comparison of research images with final diagnosis will also occur. The research intervention, an ultrasound exam, has no known safety risks. The only risk to subjects is loss of confidentiality. This study is observational, not interventional, because the experimental ultrasound will be performed in all subjects and will not be used in the clinical care of patients (consequently, will not have the opportunity to affect clinical outcomes). Experimental images will be reviewed after completion of clinical care and will not be provided to the clinicians caring for the subjects. The investigators are not measuring the effect of the ultrasound examination on the subjects' outcomes.

At present, whether the hepatitis B vaccine (HBV) can be vaccinated on time after neonatal surgery has become a common problem for children's families, neonatal surgeons, and vaccination departments, but there are few relevant studies at home and abroad, and there is no corresponding guide or consensus. In the early stage, our research team investigated the vaccination plans of the vaccination units in the main urban areas of Chongqing for such children through telephone follow-up, and found that the practices of each unit were different, all based on their own experience, and there was no clear evidence to support the vaccination or should not be vaccinated, which may cause some children to miss the best vaccination time or increase the risk of vaccination. The center is a relatively large neonatal surgery center in southwest China. The diagnosis and treatment of neonatal digestive tract malformations is at the leading level in China. It can carry out various neonatal operations such as neonatal necrotizing enterocolitis, congenital anorectal malformations, and congenital megacolon. On average, it carries out more than 30 third and fourth grade neonatal gastrointestinal operations every month. It has accumulated a lot of experience in the follow-up of newborns, There is a large amount of clinical data support for children who need to be vaccinated after surgery, so it is planned to follow up the second and third doses of hepatitis B vaccine and whether there are adverse reactions related to vaccination for children who need to be vaccinated after gastrointestinal surgery in the neonatal period, and at the same time check the production of HBsAb after vaccination, The immune response and adverse reactions of hepatitis B vaccine at different time points after surgery were studied to increase clinical evidence for the determination of hepatitis B vaccine vaccination program for newborns after surgery.

This is a study of immune responses after eating gluten powder in people with celiac disease and healthy controls.

The purpose of the study is to determine if the myoelectrical measurements made by the G-Tech Wireless Patch System correlate with clinical markers of postoperative recovery such as passage of flatus/bowel movement, oral tolerance of diet and discharge readiness. Subsequently the data will be studied to establish which information in the signals is important in determining when to feed patients and possibly discharge them..

A phase 2, randomized, double-blind, double-dummy, positive drug parallel controlled, multicenter trial to evaluate efficacy and safety of within 8 weeks (including 8 weeks) treatment of Anaprazole 40mg QD, 60mg QD compared with Rabeprazole 20mg QD in patients with reflux esophagitis.

The study participant is being asked to take part in this clinical trial, a type of research study, because the participant has Gastrointestinal (GI) symptoms following a Hematopoietic Cell Transplant (HCT). Primary Objective To determine the safety and feasibility of FMT for treating a GvHD of the gut following HCT. To determine the safety and feasibility of FMT for treating HCT induced gut dysfunction. Secondary Objectives To assess the potential efficacy of FMT for treating a GvHD of the gut following HCT. To assess the potential efficacy of FMT for treating HCT induced gut dysfunction.

The goal of this observational study has the purpose of collecting biological samples from obese patients undergoing evaluation for weight loss by means of medical or endoscopic therapies; and of post bariatric surgery patients presenting with short- and long-term surgical complications. The aim is to enhance the overall understanding of the mechanisms leading to obesity, weight loss, failure to lose weight, and weight regain following treatment. Additional goals are to determine the efficacy of endoscopic and surgical procedures, to identify potential therapeutic targets and disease biomarkers that predict response to therapy.

Over the last decade, the use of mini-organ or organoids has been increasingly developed in fundamental research. Indeed, digestive organoids represent an essential advance compared to classical culture systems (epithelial cell lines, immortalized cells) since they preserve in culture the functional complexity present in vivo (architecture, different cell types). They also have the advantage of being able to be propagated indefinitely (unlike explants), minimizing the use of animal models and reducing the amount of tissue required. Finally, their growth and development depends on the origin of the sample (the organoid will develop differently if the cell source comes from a patient suffering from an inflammatory bowel disease, for example), thus generating models of human pathologies to better determine their physiopathology. The use of organoids in biomedical research has proven to be an indispensable tool for the understanding of cellular and molecular mechanisms involved in epithelial renewal and the screening of molecules and ingredients for applications in the health and agri-food sectors.

Currently, the question remains whether palliative primary tumor resection could improve overall survival of minimally symptomatic patients with colorectal cancer and synchronous unresectable metastases. The aim of this study is to determine if there is an improvement in overall survival of palliative primary tumor resection followed by chemotherapy in minimally symptomatic patients with colorectal cancer and synchronous unresectable metastases compared to those of upfront chemotherapy/radiotherapy alone.

Gastrointestinal (GI) dysfunction affects up to 50% of medical and surgical critically ill children. GI dysfunction, specifically gastric dysmotility and loss of epithelial barrier integrity, is associated with significant morbidity in critical illness. The mechanisms underlying GI dysfunction in critical illness are not well understood. GI dysfunction in surgery and critical illness has been associated with inflammation. There is evidence to suggest the protease-activated receptor 2 (PAR2) is a link between inflammation and GI dysfunction. PAR2 is a G-coupled receptor present throughout the GI tract. PAR2 mediates GI motility and epithelial barrier integrity. PAR2 is activated by PAR2 agonists, specifically GI serine proteases and zonulin, released under conditions of inflammation. In this study the investigators will examine the relationship between inflammation and PAR2 activation by PAR2 agonists and subsequent GI dysfunction in pediatric critically ill surgical patients. The overall hypothesis of this study is that PAR2 activation by PAR2 agonists, GI serine proteases and zonulin, released due to inflammation results in gastric dysmotility and loss of epithelial barrier integrity. In this study, the investigators will examine whether PAR2 agonist expression is increased and correlates with GI dysfunction in critically ill surgical pediatric patients. This proposal fills a knowledge gap in the understanding of mechanisms for GI dysfunction in critical illness, and will be applicable to all surgical and medical critically ill children.