ESPE Abstracts

Background: Sex differences in disease susceptibility might be explained by a sexual dimorphism in hypothalamic-pituitary-adrenal axis activity, which has been postulated to emerge during puberty. The aim of this study is to assess the contribution of pubertal development to sexual dimorphism in cortisol production and metabolism.Methods: Participants, born between 1995 and 1996, were enrolled from the population-based N...

We introduce the ReTRIACt Trial (NCT05579327) of tiratricol (Triac) for MCT8-deficiency, a rare X-linked disease resulting from disordered thyroid hormone transport and characterized by profound neurodevelopmental delay and features of chronic peripheral thyrotoxicosis. The ReTRIACt Trial aims to verify the effects of tiratricol observed in previous studies. It is a double-blind, randomized, multicenter, placebo-controlled study to evaluate the effects of tiratricol discontinu...

Background: Inter-individual differences in the metabolism of cortisol have been postulated to emerge during puberty, and might be explained by a complex interplay of genetic and environmental factors. The aim of the current study was to estimate the relative contributions of genetic, shared environmental, and unshared environmental factors on cortisol metabolism in a longitudinal twin cohort assessed at pre-pubertal, mid-pubertal and post-pubertal ages....

Introduction: Preterm delivery may comport blood serum Insulin-like Growth Factor-I (IG1) decrements and lower body temperature during the first days of postnatal life of the human newborn (NWB). We evaluated the role of preterm delivery in associations between axillary temperature (TEMP) and IG1 in NWBs without life-threatening disease.Methods: NWBs with any among total parenteral nutrition, blood transfusion, therapeutic hypothermia, life-threatening d...

Birth chest circumference(CC) shows often, like birth gestational age(GA), tight direct relations to birth body weight(BW). However distinct connections of hypoxia/undernutrition with different body structures might be suspected based on brain-, heart- and adrenal-sparing following intrauterine growth restriction and, postnatally, on higher chest size for body mass observed at high altitude. Growth retarded fetuses gestated by hypoxic rats may present increments of blood serum...

Birth chest circumference(CC) shows often, like birth gestational age(GA), tight direct relations to birth body weight(BW). However distinct connections of hypoxia/undernutrition with different body structures might be suspected based on brain-, heart- and adrenal-sparing following intrauterine growth restriction and, postnatally, on higher chest size for body mass observed at high altitude. Low BW and hypoxia may be associated with circulating Insulin-like Growth Factor-I(IG1...

Introduction: Oral/enteral caloric intake (KOE) insufficiency may accompany human newborn (NWB) respiratory derangements. We detected axillary temperature(TEMP) relations to NWB blood serum Insulin-like Growth Factor-II(IG2)-blood serum Insulin-like Growth Factor-Binding Protein-3(IB3) ratios(IG2/IB3R). Here we evaluate the TEMP-independent relevance of birth gestational age(GA) and KOE to relationships of O2 supplementation in respiratory gases(O2S) with IG2/...

Introduction: Human newborn(NWB) respiratory derangements may be concomitant to oral/enteral caloric intake (KOE) insufficiency. We evidenced a possible involvement of axillary temperature(TEMP) in relationships between preterm birth (PTB) and blood serum Insulin-like Growth Factor-I(IG1) in NWBs. Here we evaluate the TEMP-independent role of birth gestational age(GA) and KOE in relations of O2 supplementation in respiratory gases(O2S) to IG1 in the not-life-t...

Introduction: Body temperature determinants include head-brain thermal homeostatic mechanisms and, in the human newborn (NWB), birth gestational age (GA). Estimated birth brain weight (BRW) ratio to birth body weight (BW)(BBR) resulted associated with GA and blood serum Insulin-like Growth Factor (IGF)-II(IG2) ratio to blood serum IGF Binding Protein-3 (IB3)(IG2 through chronologically-corresponding IB3, IG2/IB3R) in our previous NWB observations. Here we evaluate BRW, BW, BBR...

Background/objective and hypotheses: Parenteral nutrition (KIVD) relevance to known birth gestational age (GA) relations to the blood serum IG2/blood serum IGF binding protein 3 (IB3) ratio (IG2 through chronologically corresponding IB3, IG2/IB3) was studied in the not-life-threatened newborn (NWB).Method: SEX, GA (unit, complete week), postnatal age (PNA; unit, day), birth body weight (BW; unit, g), birth head circumference (HC; unit, cm), GA≤36 (...