Publications by authors named "Eimei Harada"

Article Synopsis
  • Serum growth differentiation factor 15 (GDF15) is an important biomarker for detecting mitochondrial diseases, but its significance in newborns is not well studied.
  • Blood samples from 18 newborns showed that GDF15 levels dropped to about 35% of their initial cord blood levels within the first week of life.
  • The study found that GDF15 levels negatively correlated with postnatal age and birth weight but positively correlated with levels of other molecules like N-terminal pro-brain natriuretic peptide and lactate, suggesting GDF15 could indicate the newborn's shift to aerobic metabolism.
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Neonates often develop transition problems after low-risk birth, precise assessment of which is difficult at primary birth centres. The aim of this study was to assess whether a video triage system can be established without a specially designed communication system between local birth centres and a tertiary neonatal intensive care unit in a region with a population of 700,000. 761 neonates who were referred to a tertiary neonatal intensive care unit were examined.

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Aim: Precise estimation of respiratory function is essential to optimise neonatal respiratory care. However, current clinical scores have not been validated with quantitative measures of respiratory function. The aim of this study was to develop a physiological scoring system to predict low respiratory dynamic compliance of <0.

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Backgrounds: Environmental factors during early life alter the hypothalamus-pituitary-adrenal (HPA) axis regulation and increase the risk of diseases in later life. However, adrenal function at each developmental stage has not fully been investigated in relation to pathological antenatal conditions. Cortisol levels of newborns with intrauterine growth restriction (IUGR) are elevated during the neonatal period; however, when studied during early childhood, cortisol levels are reduced compared with their peers, suggesting that the HPA axis regulation might be altered from activation to suppression, the timing of which remains uncertain.

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For infants with acute progressive hydrocephalus, invasive drainage of cerebrospinal fluid (CSF) is performed until a ventriculo-peritoneal shunt can be inserted. Surrogate markers of intracranial pressure (ICP) may help optimise the timing of invasive procedures. To assess whether RI with/without fontanel compression helps distinguish between infants with normal (<5 cmHO), mild (5-11 cmHO), and moderate (>11 cmHO) ICP elevation, 74 ICP measures before/after CSF removal and 148 related Doppler measures of the middle cerebral artery were assessed.

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Context: Understanding the biological rhythms and stress response in sick newborns is important to minimize the negative effects of intensive care. Salivary cortisol has been used as a noninvasive surrogate marker of adrenal function; however, understanding of its control variables is insufficient.

Objective: To investigate the presence of feeding-induced cortisol response and its control variables in newborns.

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For cooled newborn infants, humidifier settings for normothermic condition provide excessive gas humidity because absolute humidity at saturation is temperature-dependent. To assess humidification of respiratory gases in patients who underwent moderate therapeutic hypothermia at a paediatric/adult intensive care unit, 6 patients were studied over 9 times. Three humidifier settings, 37-default (chamber-outlet, 37°C; Y-piece, 40°C), 33.

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Adult patients frequently suffer from serious respiratory complications during therapeutic hypothermia. During therapeutic hypothermia, respiratory gases are humidified close to saturated vapor at 37°C (44 mg/L) despite that saturated vapor reduces considerably depending on temperature reduction. Condensation may cause serious adverse events, such as bronchial edema, mucosal dysfunction, and ventilator-associated pneumonia during cooling.

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In ten families with late-onset ornithine transcarbamylase (OTC) deficiency in male patients, three mutant alleles-R40H, R277W, and Y55D-were identified. In a total of 20 informative parent-offspring pairs, father-to-daughter transmission and mother-to-offspring transmission occurred in five (25%) and 15 (75%), respectively, indicating that paternal transmission contributes substantially to the pool of these mutant alleles. Relative reproductive fitness of males and females carrying the mutant alleles was calculated to be 0.

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Background: The occurrence of male patients with ornithine transcarbamylase (OTC) deficiency during adolescence or in adulthood has now been recognized. The aim of this study was to determine the prognostic factors that affect the prognosis of life, to explore a basis for therapeutic strategy.

Methods: In 10 patients, nine of whom carried the R40H mutation and the other one carrying the Y55D mutation in the OTC gene, 32 demographic and laboratory data were first compared between survivors and non-survivors, using the unpaired t-test.

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We applied the integrated backscatter (IBS) imaging system to the evaluation of the normal neonatal brain of different birth-weights: extremely low-birth-weight (N=13), very-low-birth-weight (N=14), low-birth weight (N=14), and normal birth weight (N=19). The IBS values in six regions of interest, the deep white matter, subcortical white matter, choroid plexus, thalamus, lateral ventricle, and occipital bone, were compared among groups of different birth weights, gestational age, and postnatal age: at the date of birth and 28 approximately 30 days after birth. The IBS values were higher in the order of bone>choroid plexus>deep white matter>subcortical white matter>thalamus>lateral ventricle and were significantly different except for the lateral ventricle in all the groups at days 0 and 28 approximately 30.

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