Publications by authors named "Petr Jira"

Primrose syndrome (PS; MIM# 259050) is characterized by intellectual disability (ID), macrocephaly, unusual facial features (frontal bossing, deeply set eyes, down-slanting palpebral fissures), calcified external ears, sparse body hair and distal muscle wasting. The syndrome is caused by de novo heterozygous missense variants in ZBTB20. Most of the 29 published patients are adults as characteristics appear more recognizable with age.

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Background Smoking during pregnancy still exists in daily life but the effect on the newborn in the early stage of life is still unclear. This study investigates the normal reference range of carboxyhemoglobin (HbCO) in umbilical cord blood gas (UBG). Methods A single center retrospective cross-sectional cohort study was performed with 1172 cases.

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Article Synopsis
  • - The study investigates the growth hormone (GH) levels and the prevalence of growth hormone deficiency (GHD) in young adults with Prader-Willi syndrome (PWS) who were previously treated with GH.
  • - Out of 60 individuals studied, only 3% had low serum IGF-I levels, and 15% showed GH peaks below the threshold, but none met the full criteria for adult GHD despite some showing lower GH peaks associated with higher BMI and fat mass.
  • - The findings suggest that while some young adults with PWS exhibit lower GH peaks, the overall prevalence of adult GHD in this population is not significant, indicating that GH therapy has been effective.
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Familial hypercholesterolemia (FH) is a monogenic autosomal dominant disorder. FH is the most common hereditary cause of raised serum cholesterol levels and is associated with an increased risk of premature cardiovascular disease (CVD). This disorder is known to have a genetic cause, and effective drug therapies exist for patients with FH.

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Cholesterol metabolism deficiency.

Handb Clin Neurol

March 2014

Genetic defects in enzymes responsible for cholesterol biosynthesis have emerged as important causes of congenital dysmorphology and retardation syndromes. Cholesterol is an important constituent of the cell membrane of most eukaryotic cells, in myelin formation in the brain, spinal cord, and peripheral nervous system, and acts as the precursor for steroid hormones and bile acids. Finally, cholesterol has important interactions with proteins, which control embryonic development.

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Background: We describe an outbreak of Bullous Impetigo (BI), caused by a (methicillin susceptible, fusidic acid resistant) Staphylococcus aureus (SA) strain, spa-type t408, at the neonatal and gynaecology ward of the Jeroen Bosch hospital in the Netherlands, from March-November 2011.

Methods: We performed an outbreak investigation with revision of the hygienic protocols, MSSA colonization surveillance and environmental sampling for MSSA including detailed typing of SA isolates. Spa typing was performed to discriminate between the SA isolates.

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Background: Knowledge about the effects of GH treatment on cognitive functioning in children with Prader-Willi syndrome (PWS) is limited.

Methods: Fifty prepubertal children aged 3.5 to 14 yr were studied in a randomized controlled GH trial during 2 yr, followed by a longitudinal study during 4 yr of GH treatment.

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Context: P450 oxidoreductase deficiency (PORD) is a unique congenital adrenal hyperplasia variant that manifests with glucocorticoid deficiency, disordered sex development (DSD), and skeletal malformations. No comprehensive data on genotype-phenotype correlations in Caucasian patients are available.

Objective: The objective of the study was to establish genotype-phenotype correlations in a large PORD cohort.

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The genomic architecture of the 10q22q23 region is characterised by two low-copy repeats (LCRs3 and 4), and deletions in this region appear to be rare. We report the clinical and molecular characterisation of eight novel deletions and six duplications within the 10q22.3q23.

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Background: Children with Prader-Willi syndrome (PWS) have abnormal body composition and impaired growth. Short-term GH treatment has beneficial effects.

Objectives: The aim of the study was to investigate effects of long-term continuous GH treatment on body composition, growth, bone maturation, and safety parameters.

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Antley-Bixler syndrome (ABS, MIM 207410) is a skeletal abnormality syndrome primarily affecting head and limbs. Little is known of the origin of the condition but inactivating mutations in the fibroblast growth factor receptor (FGFR2) has been found in some patients. Genital ambiguity is seen occasionally in this condition, suggesting possible disordered steroidogenesis in early pregnancy.

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