Growth hormone neurosecretory dysfunction associated with ring chromosome 18. 1996

S Aritaki, and A Takagi, and H Someya, and L Jun
Department of Pediatrics, Tokyo Medical College, Kasumigaura Hospital, Ibaragiken, Japan.

The patient was a girl 5 years and 1 month old of markedly short stature (-3.9 SD) for her chronological age. Although her karyotype was 46, XX, r(18)(p11q23), there were no symptoms of a chromosomal deletion. Other authors have described cases with a ring autosome showing a phenotype with short stature alone as 'ring syndrome', regardless of which autosome is involved. The present case seems to fall into this category. Although blood growth hormone (GH) showed normal responses to four types of provocative tests, the mean value of blood GH levels obtained at 30 min intervals for 24 h was low, indicating the existence of growth hormone neurosecretory dysfunction (GHND).

UI MeSH Term Description Entries
D007621 Karyotyping Mapping of the KARYOTYPE of a cell. Karyotype Analysis Methods,Analysis Method, Karyotype,Analysis Methods, Karyotype,Karyotype Analysis Method,Karyotypings,Method, Karyotype Analysis,Methods, Karyotype Analysis
D009489 Neurosecretion The production and release of substances such as NEUROTRANSMITTERS or HORMONES from nerve cells. Neurosecretions
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D002887 Chromosomes, Human, Pair 18 A specific pair of GROUP E CHROMOSOMES of the human chromosome classification. Chromosome 18
D005260 Female Females
D006130 Growth Disorders Deviations from the average values for a specific age and sex in any or all of the following: height, weight, skeletal proportions, osseous development, or maturation of features. Included here are both acceleration and retardation of growth. Stunted Growth,Stunting,Disorder, Growth,Growth Disorder,Growth, Stunted,Stuntings
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012303 Ring Chromosomes Aberrant chromosomes with no ends, i.e., circular. Chromosomes, Ring,Chromosome, Ring,Ring Chromosome
D013006 Growth Hormone A polypeptide that is secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). Growth hormone, also known as somatotropin, stimulates mitosis, cell differentiation and cell growth. Species-specific growth hormones have been synthesized. Growth Hormone, Recombinant,Pituitary Growth Hormone,Recombinant Growth Hormone,Somatotropin,Somatotropin, Recombinant,Growth Hormone, Pituitary,Growth Hormones Pituitary, Recombinant,Pituitary Growth Hormones, Recombinant,Recombinant Growth Hormones,Recombinant Pituitary Growth Hormones,Recombinant Somatotropins,Somatotropins, Recombinant,Growth Hormones, Recombinant,Recombinant Somatotropin
D013997 Time Factors Elements of limited time intervals, contributing to particular results or situations. Time Series,Factor, Time,Time Factor

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