The Analysis of Association of Retinopathy of Prematurity, Gut Microbiome Profile, and Systemic Inflammation

Chang Gung Medical Foundation

Status

Invitation-only

Conditions

Retinopathy of Prematurity

Microbiome

Treatments

Procedure: laser photocoagulation

Procedure: intravitreal injection of anti VEGF

Study type

Observational

Funder types

Other

Identifiers

NCT05144282

201902088A3

Details and patient eligibility

About

Study Aims

Understanding the gut microbiome profile in very low birth weight infants with or without ROP. The onset and aggravation of ROP and their relationship with gut microbiome will be examined.
Understanding the serum inflammatory cytokine profile in these infants and its relationship with the onset and progression of ROP. Their changes and association with the other systemic disorders such as NEC or RDS or sepsis will be explored.
Examiningthe associations amongmicrobiome profile and serum inflammatory cytokines and their relationship with ROP clinical features (prematurity without ROP, ROP without treatment, and ROP with treatment) in the study participant

Full description

Background In recent decades, severeretinopathy of prematurity (ROP) and the proportion of ROP needing treatment is increasing. These conditions are due to the fact that more premature infants now could surviveowing to the improvement in neonatology. Since ROP isa leading cause of blindness in children, how to deal with these severely affected eyes becomes a major challenge.

In recent years, growing evidence support that exposure to infection and inflammation increases risk of ROP and these exposures are considered key contributors to the pathogenesis of ROP. These exposures, which are modifiable, have gained interest among researchers.

The microbiome are symbiotic organisms living inside human bodies. They are most abundant in human gastrointestinal tracts and play a fundamental role in host inflammatory and immunity physiology. The gut microbiome is most extensively studied, and reports showed that they play a role not only in gastrointestinal inflammatory diseases, but also in extra-gastrointestinal conditions.

Recent data have shown that microbiome changes may involve in the pathogenesisof ophthalmic diseasessuch as uveitis, but its role in ROP has not been explored. Since ROP is closely related to inflammation, and that the gut microbiome has a significant role in the modulation of both systemic and ocular inflammatory pathways, we are interested to know whether there is association between ROP, microbiome, and systemic inflammation. Whether the microbiome profile is different in ROP and no-ROP neonates is worth exploring. Also, it is important to see whether the onset of ROP is related to the systemic inflammation status. To the best of our knowledge, there are no report on such topic, therefore our current study is designed to answer this question.

Methods Very low birth weight preterm infantsborn in our hospital from August 2020to July 2023 will be enrolled into study. Infants who has major or congenital GI anomaly will be excluded. ROP screening protocol and categorization will follow the international standards. DNA will be extracted from the stool samples and underwent microbiome profiling either by 16S rRNA or shotgun metagenomic sequencing. Blood samples from the routine blood examinations will beanalyzed by an immunoassay to reveal the level of systemic inflammation (IL-1 alpha/beta, IL-10, IL-13 and so on). Statistical analysis will be performed and the associations among ROP features, gut microbiome, and serum inflammatory cytokines will be explored.

Study Aims

Understanding the gut microbiome profile in very low birth weight infants with or without ROP. The onset and aggravation of ROP and their relationship with gut microbiome will be examined.
Understanding the serum inflammatory cytokine profile in these infants and its relationship with the onset and progression of ROP. Their changes and association with the other systemic disorders such as NEC or RDS or sepsis will be explored.
Examiningthe associations amongmicrobiome profile and serum inflammatory cytokines and their relationship with ROP clinical features (prematurity without ROP, ROP without treatment, and ROP with treatment) in the study participant

Enrollment

240 estimated patients

Sex

All

Ages

1 day to 1 week old

Volunteers

Accepts Healthy Volunteers

Inclusion criteria

All GA<37 weeks preterm infants with birth weight (BW) between 500 and 1500 grams born in Linkou of Chung Gung Memorial Hospital from August 2020 to July 2023 will be enrolled into study after obtaining informed consent from their parent within 1-week-of-age.

Exclusion criteria

Preterm infants who has major or congenital gastrointestional (GI) anomaly (eg. trisomy 13, trisomy 18, esophageal or intestinal atresia, GI obstruction, meconium peritonitis with prenatal bowel perforation, etc.).