ESPE Abstracts

Background: Notch1-Delta-like ligand 4 (Dll4) signalling pathway has a biological effect of negative feedback regulation to VEGF in retinal vascular development process. There are few studies on the inhibition of Notch1-Dll4 signalling pathway in ROP and the regulatory pathway of VEGF.Objective and hypotheses: To investigate the role that Notch1-DLL4 signal pathway played in the oxygen-induced retinal neovascularization of mice by analyzing the expressio...

Key words: Type 1 diabetes mellitus; Intestinal flora; metagenomic sequencing; cytokines; AutoimmunityObjective: This study aims to verify the effect of intestinal microbiota diversity on the disease development of T1DM mice model, and to explore the mechanism of intestinal microbiota in the development of type 1 diabetes mediated by related cytokines.Method: T1DM mouse model was e...

Background: We investigate the efficacy and safety of two different treatments which have not been evaluated in peri-puberty boys with HH.Objective and hypotheses: To assess the effectiveness and safety of pulsatile GnRH or hCG treatment in adolescent boys with hypogonadotropic hypogonadodism.Method: 12 patients received 8–10 μg of GnRH, subcutaneously injected every 90 min using a pump. Another 22 patients received hCG, ...

Say-Barber-Biesecker-Young-Simpson syndrome (SBBYSS) is a rare and clinical well-described disease caused by de novo heterozygous mutations in KAT6B gene. Genitopatellar syndrome (GS) is also caused by the mutations of gene KAT6B and shares some common clinical symptoms with SBBYSS. The phenotypic spectrum caused by KAT6B is very broad that some patients cannot be classified as SBBYSS or GS. Herein, we report one de novo heterozygous KAT6B truncating variants c.5124delC (p.L17...

Background: Sitosterolemia (STSL) is an extremely rare genetic disease. Xanthomas as the first symptom is frequently misinterpreted as familial hypercholesterolemia (FH) in children. Inappropriate treatment may deteriorate the condition.Objectives: The goal of this study was to summarize the clinical characteristics of children with STSL who had xanthomas as their first symptom and to provide clues for early clinical dia...

Background: The Hedgehog (HH) family plays an important role in the development, proliferation and homeostasis in various tissues and organs. Desert hedgehog(DHH), as a member of this family, is mainly involved in the normal development of testis and the formation of nerve sheath. DHH variation mainly causes 46, XY disorders of sex development (DSD) with or without minifascicular neuropathy(MN). Up to date, only 22 affected patients in detail have bee...

Cerebellar-facial-dental syndrome is a rare autosomal recessive disorder due to biallelic variants in the BRF1 gene. It is characterised by cerebellar hypoplasia, intellectual disability, dysmorphic facial features and short stature. There have been only 12 patients described in the literature to date. We report a case of a 9-year-old non-consanguineous Caucasian boy with cerebellar-facial-dental syndrome and multiple coexisting diagnoses, including Klinefelter syndrome (XXY k...

Objective: Inactivating mutations in the gene encoding the alpha-subunit of Gs (GNAS) gene, which consists of exons 1-13 and encodes the alpha-subunit of the stimulatory G protein (Gsa), are associated with several clinical syndromes, including pseudohypoparathyroidism (PHP), pseudopseudohypoparathyroidism (PPHP), and progressive osseous heteroplasia (POH).Method: We documented patient clinical characteristics a...

Objective: Through the diagnosis and treatment of Uighur girl with adrenocortical adenoma, who was complain of short stature, to prompt pediatric endocrinologists pay attention to hypercortisolism in the diagnosis and treatment of children with short stature.Methods: With the case report of hypercortisolism in a Uighur child, to introduce the diagnosis and treatment of adrenocortical adenoma, presenting the clinical char...

Background: Pseudohypoparathyroidism type 1b (PHP1b) is caused by epigenetic errors on the maternal GNAS allele at differentially methylated regions (DMRs) associated with exons A/B, XL, and NESP that lead to reduced production of Gαs transcripts most notably in the renal proximal tubule and thyroid follicular cells. Most PHP1b cases appear sporadically, few of which can be explained by paternal uniparental disomy involving chromosome 20q, leading to global methy...