Intestinal Immunity in Neurologic Disease

Yale University

Status

Enrolling

Conditions

REM Sleep Behavior Disorder

Multiple Sclerosis

Parkinson Disease

Treatments

Procedure: Colon Tissue Biopsy

Study type

Observational

Funder types

Other

Identifiers

NCT06329453

2000033081

Details and patient eligibility

About

The purpose of this study is to ascertain the functional profiles of the immune cells within the gastrointestinal tract and to determine how these cells contribute to autoimmune and neurologic diseases.

Full description

Immune cells and microbes within the GI tract likely play an important role for neurologic disease pathogenesis, including MS and Parkinson's disease. Nevertheless, these immune cells have never been studied in detail using modern single cell technologies. Moreover, most of the human microbiome work done in this space to date has utilized fecal samples, but different anatomic niches within the gut may have greater importance for disease. This study will provide seminal information about how the relationships between gut immunity and neurologic/autoimmune diseases and may be paradigm shifting in regards to how the pathogenesis of some neurologic diseases is viewed.

This is an observational cohort study. Individuals undergoing colonoscopy (+/- upper endoscopy) as a part of standard of care or who consent to have a colonoscopy (+/- upper endoscopy) will be recruited to provide tissue biopsies obtained from the gastrointestinal mucosa. The rationale for including those who are not yet due to have a screening colonoscopy is that for many neurologic diseases (like MS), the disease onset is in adolescence or early adulthood, and the disease is diagnosed in young adults. These individuals would not yet be due to have screening colonoscopies, and yet changes in immune cells within the intestines may be a critical part of disease pathogenesis. This is what the investigators are exploring with this study.

The investigators will need to recruit age matched healthy controls because many features of the immune system change with age; as people get older, the immune system becomes less inflammatory ("immune senescence") and thus it is essential to have age-matched tissues for comparison.

Enrollment

100 estimated patients

Sex

All

Ages

18 to 99 years old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

Age 18 and up

ONE of the following:

Recommended to under a screening colonoscopy (+/- upper endoscopy) as part of standard of care. This includes healthy individuals as well as those with neurologic and/or autoimmune diseases. OR
Willing to undergo research colonoscopy (+/- upper endoscopy) for research

Exclusion criteria

Currently pregnant. Women of childbearing potential would perform a point of care urine pregnancy test prior to colonoscopy/endoscopy.
Known or suspected, chronic inflammatory gastrointestinal disease (e.g. inflammatory bowel disease)
Known, acute or chronic infections
Systemic antibiotic (PO or IV) use within 3 months of colonoscopy
Systemic corticosteroid use (equivalent of prednisone 10 mg per day or higher for >5 days) within 2 weeks of colonoscopy
Malignancy, diagnosed or treated within the last 5 years
Probiotic use within 2 weeks of procedure
History of major GI surgery (e.g. colon resection, gastric bypass)
Bleeding disorder, or on anticoagulant medication
Other medical condition that, in the judgement of the investigator, would lead to higher-than-expected risks of biopsy
Allergy to MAC anesthesia or other drugs used pursuant to standard of care for biospecimen collection