Exploring arginine supplementation for immune response in postoperative infants

An Exploratory Study of Arginine Supplementation and the Postoperative Immune REsponse (ASPIRE)

NA · University of Liverpool · NCT05306925

This study is testing if giving arginine supplements can help improve the immune response in infants who have had major bowel surgery or have a serious gut condition.

Quick facts

PhaseNA
Study typeInterventional
Enrollment48 (estimated)
Ages22 Weeks to 44 Weeks
SexAll
SponsorUniversity of Liverpool (other)
Locations2 sites (Liverpool, Merseyside and 1 other locations)
Trial IDNCT05306925 on ClinicalTrials.gov

What this trial studies

This study investigates the effects of arginine supplementation on immune function in infants who have undergone major bowel surgery or have been diagnosed with necrotising enterocolitis. A total of 48 infants will be recruited, divided into preterm and term groups, with some receiving arginine in both oral and parenteral forms, while others will receive standard nutrition. The study will assess blood arginine levels and related gene expressions to understand the nutritional impact on immune response. It will take place across two sites, Alder Hey Children's Hospital and Liverpool Women's Hospital, over a period of 24-36 months.

Who should consider this trial

Good fit: Ideal candidates include preterm infants under 30 weeks gestation or term infants over 35 weeks requiring major bowel surgery.

Not a fit: Patients unlikely to benefit include those with poor immediate postoperative conditions or serious metabolic disorders.

Why it matters

Potential benefit: If successful, this study could enhance postoperative recovery and immune function in vulnerable infants.

How similar studies have performed: While the specific approach of arginine supplementation in this context is novel, similar nutritional interventions have shown promise in enhancing immune responses in other populations.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Preterm infants born \<30 weeks gestation requiring laparotomy/major bowel surgery or diagnosed with necrotising enterocolitis (Modified Bell's Stage II or higher) before discharge
* Term and near term infants (born\>35 weeks gestation) requiring laparotomy/major bowel surgery in the first 3 days of life (gastroschisis; major bowel atresias expected to require at least 7 days of PN)

Exclusion Criteria:

* Infants who are unlikely to survive because of poor immediate postoperative condition
* Infants known (or suspected to have) a diagnosis of inborn error of metabolism or serious liver dysfunction
* Parents who are unable to give informed consent

Where this trial is running

Liverpool, Merseyside and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Preterm, Surgery, Nutritional Deficiency, Immune System and Related Disorders, Neonate, Arginine, Postoperative, Immune function

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.