Phenotyping of Adult Crohn's Focusing on Sarcopenia

NCT05572203 | Unknown

• 2 other identifiers: 21044287471
• Study Type: interventional
• Target: 35
• Locations: 1 country
• Sites: 1

Brief Summary

Inflammatory bowel disease (IBD) includes two idiopathic chronic relapsing and remitting inflammatory conditions affecting the gastrointestinal (GI) tract: Crohn's disease (CD) and ulcerative colitis (UC)Malnutrition and significant alteration of body composition are common in inflammatory bowel disease patients, whereby the prevalence of malnutrition may be up to 82.8% in CD patients with active disease, and up to 38.9% in CD patients in remission. Many CD patients have low muscle mass and function (sarcopenia) with drivers of such pathophysiology unknown. 41.6% of CD patients with sarcopenia require surgery, with the surgical trauma and resulting inactivity leading to further muscle mass loss such that the chronic inflammatory insult associated with refractory disease may be linked to advanced muscle mass depletion. The majority of adult CD patients have low muscle mass even in clinical remission indicating the poorly reversible nature of this phenomenon. Chronic disease burden may therefore be important in the accentuation of muscle loss. Muscle mass is maintained through the daily balance of MPS and muscle protein breakdown (MPB), with the essential amino acid (EAA) components of a meal and muscle contraction being the primary stimulators of MPS. Patients with active CD show a significant decrease in the expression of proteins in hypertrophic signalling pathways (Akt, P70S6K1) with no change in the expression of atrophic signalling (MAFbx, MuRF1). Also, adult CD patients with established disease consume less protein compared to matched healthy volunteers (HV). Furthermore, the intestinal motility, measured using cine-MRI, is reduced in active CD, possibly further decreasing intestinal digestion and absorption of dietary peptides. In general, the malabsorption is a major contributing factor to malnourishment in CD. It has been shown that in male paediatric patients with long-term CD, muscle metabolism is perturbed by a negative branched-chain amino acid balance in the forearm, with this variable linked to lower appendicular muscle mass, higher muscle fatigue and reduced protein intake, CD may have a significant effect on protein digestion and absorption, and blunt the MPS response to feeding, leading to a chronic muscle mass reduction that may persist even when in remission. The EAA components of a protein meal are crucial for the stimulation of muscle protein synthesis (MPS), and all the EAA/leucine play a key role in driving MPS. Low serum levels EAA/leucine have been reported in CD but their role in the aetiology of sarcopenia in CD is unknown. Further, how CD affects the protein digestion/absorption and how this contributes to low EAA/leucine unclear. Recent advances in stable isotope tracer techniques using a dual tracer methodology now enable a more accurate determination of protein digestibility. By following the appearance of intrinsically labelled AAs into the blood upon digestion of the intrinsically labelled protein, alongside the appearance of label-free AAs, protein digestibility can be accurately determined. Further, by collecting a muscle biopsy postprandially, the direct incorporation of AA from the digested protein into the muscle can be determined- providing a gold standard method for investigating anabolic resistance. Project aim is to use an intrinsically labelled casein to investigate protein digestion, absorption and MPS responses in CD patients. To achieve this, investigators will investigate protein digestion, absorption and muscle protein synthesis responses in Crohn's disease patients and healthy volunteers by utilising intrinsically labelled protein.

Conditions

Inflammatory Bowel Diseases; Sarcopenia; Digestive System Disease; Nutrition, Healthy; Protein Malabsorption; Crohn Disease

Keywords

Labelled protein; protein; muscle protein synthesis; muscle mass; sarcopenia; Inflammatory bowel disease; Crohn's disease; nutrition; DEXA; 13C/2H-labelled amino acids

Outcome Measures

Primary Outcomes (1)

• Postprandial muscle protein synthesis.

  Postprandial muscle bound \[ring-D5\]-Phenylalanine, \[5,5,5-D3\]-Leucine as measured through mass spectrometry

  Change from baseline 4 hours (Two time points)

Secondary Outcomes (20)

• Appearance/ digestibility of plasma Amino Acid in blood.

  blood samples will be taken at regular intervals up to 240 minutes (max 120ml total blood draw post protein drink). 12-time points

• Muscle mRNA expression of anabolic and catabolic

  Change from baseline at 4 hours (Two time points).

• Muscle protein expression of anabolic and catabolic pathway.

  Change from baseline at 4 hours (Two time points).

• Serum Cytokines levels of IL-1

  Only at baseline.

• Serum Cytokines levels of IL-6

  Only at baseline.

Study Arms (2)

Healthy group (Control group )

ACTIVE COMPARATOR

This group will include healthy participants matching Crohn's group

Dietary Supplement: Intrinsically labelled protein

Crohn's group or patients group

EXPERIMENTAL

This group will include patients with Crohn's disease.

Dietary Supplement: Intrinsically labelled protein

Interventions

Intrinsically labelled protein DIETARY_SUPPLEMENT

It is a protein drink that includes Intrinsically labelled Casein ( from Arla Foods), 13C/2H-labelled Spirulina (from CK Isotopes), and 13C/2H-labelled amino acids (from CK Isotopes)

Also known as: Intrinsically labelled Casein

Crohn's group or patients group; Healthy group (Control group )

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Aged 18 years or older
• BMI \<30 kg/m2/
• No previous known bowel disease
• Be able to provide written informed consent \& participate fully in all aspects of the study.
• Aged 18 years or older.
• BMI \<30 kg/m2
• Documented diagnosis of CD previously confirmed by endoscopy and histology at least 2 years prior to enrolment.
• Active CD defined as HBI \>4 and CRP \>5g/l or FCP \>250ug/g or as deemed through endoscopy or cross sectional imaging.
• Previous biologic or immunosuppressant exposure
• Previous CD-related intestinal surgery
• Able to participate fully in all aspects of the study
• Written informed consent obtained and documented

You may not qualify if:

• Aged 18 years or older
• BMI \<30 kg/m2/
• No previous known bowel disease
• Be able to provide written informed consent \& participate fully in all aspects of the study.
• A current diagnosis of ulcerative colitis, indeterminate colitis, microscopic colitis, or diverticular disease-associated colitis
• A diagnosis of short-bowel syndrome
• Use of systemic corticosteroids for CD (2 continuous weeks or more) within 3 months prior to enrolment, or use of any medications for HVs and CD, in the opinion of the investigator, may interfere with the subject's ability to participate fully in the study.
• Serious underlying disease other than CD that, in the opinion of the investigator, may interfere with the subject's ability to participate fully in the study.
• History of active alcohol or drug abuse that, in the opinion of the investigator, may interfere with the subject's ability to comply with the study procedures.
• Pregnancy or breastfeeding.
• Contraindications for DEXAscanning e.g. x-ray within last 7 days.
• Allergy to milk, , or casein

Sponsors & Collaborators

• University of Nottingham: lead

Study Sites (1)

University of Nottingham

Nottingham, United Kingdom

Location

Related Publications (21)

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MeSH Terms

Conditions

Inflammatory Bowel Diseases; Sarcopenia; Digestive System Diseases; Crohn Disease

Condition Hierarchy (Ancestors)

Gastroenteritis; Gastrointestinal Diseases; Intestinal Diseases; Muscular Atrophy; Neuromuscular Manifestations; Neurologic Manifestations; Nervous System Diseases; Atrophy; Pathological Conditions, Anatomical; Pathological Conditions, Signs and Symptoms; Signs and Symptoms

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: PARALLEL
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: July 26, 2022
• First Posted: October 7, 2022
• Study Start: April 14, 2022
• Primary Completion: June 1, 2023
• Study Completion: December 1, 2023
• Last Updated: December 8, 2022

Record last verified: 2022-12

Locations

GB (1)