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A sub-study is an ‘add-on’ study that helps to answer specific questions within a larger research project. If you decide to participate in the CIRCA DIEM study, you or your child may be invited to take part in one of the CIRCA DIEM sub-studies.
The CIRCA DIEM study aims to establish if cycling environmental light and noise levels for premature infants during their initial hospital stay leads to earlier development of circadian (daily) rhythms and better outcomes for the preterm babies, including improved brain development.
Graham Jane Shannon Hall Pillow Simpson BAppSci PhD CRFS FANZSRS FThorSoc FERS BMedSci (Dist) MBBS, PhD (Dist) FRACP BMedSci (hons), PhD Honorary
Since the first description of bronchopulmonary dysplasia (BPD), multiple definitions to diagnose BPD and its grading have been published. Several studies have compared the predictive performance of these definitions for long-term outcomes. The objective was to identify the BPD definition with the optimal predictive performance for long-term respiratory and neurological outcomes in preterm infants.
Jane Pillow BMedSci (Dist) MBBS, PhD (Dist) FRACP Head, Developmental Chronobiology jane.pillow@thekids.org.au Head, Developmental Chronobiology
Normal in utero lung development and growth rely upon the expansion of airspaces and the controlled efflux of lung liquid into the amniotic space. Infants with congenital diaphragmatic hernia (CDH) also have lung hypoplasia due to occupation of the chest cavity by the stomach and bowel and, in the most severe cases, the liver. Balloon tracheal occlusion reduces the severity of lung hypoplasia in fetuses with CDH but increases the risk of premature birth.
Inflammation and oxidative stress play a key role in the development of bronchopulmonary dysplasia (BPD), possibly contributing to persistent respiratory morbidity after preterm birth. We aimed to assess if inflammatory markers were elevated in exhaled breath condensate (EBC) of infants born very prematurely (< 32 weeks gestation) at 12-16 corrected months of age, and if increased levels were associated with BPD diagnosis and respiratory morbidity.
Laboratory models provide an important tool in helping to understand the cellular and molecular drivers of respiratory disease. Many animal models exist that model the neonatal outcomes of preterm birth.
Abnormalities of the airway smooth muscle (ASM) layer in asthma may develop before birth. We hypothesize that antenatal inflammation causes physiological abnormalities of the ASM that predisposes asthma. This study determined the short-term effects of antenatal inflammation on the developing ASM.
Preterm infants are often vitamin A deficient, and vitamin A has functions that could mitigate the processes that lead to bronchopulmonary dysplasia. Therefore, supplementation of preterm infants with vitamin A to reduce the risk of bronchopulmonary dysplasia makes inherent sense.