hypoparathyroidism/arginine

BACKGROUND Glial cells missing B (GCMB) is a transcription factor that is expressed in the parathyroid hormone (PTH)-secreting cells of the parathyroid glands. Several mutations in GCMB have been reported to cause hypoparathyroidism (HP). We identified a family with two individuals in two

Familial isolated hypoparathyroidism (FIH) is an inherited metabolic disorder characterized by hypocalcemia and hyperphosphatemia due to deficient secretion of biologically active PTH. We used denaturing gradient gel electrophoresis to screen for mutations in exon 1 and the coding region of the

The aim of the present study was to evaluate the influence of changes in the serum calcium concentration upon glucagon secretion in man. For this purpose, a group of subjects with either idiopathic (four cases) or secondary (two cases) hypoparathyroidism was submitted to an arginine test (0.5 g/kg)

A 5 1/2-year-old Saudi Arabian girl presented with a syndrome of intrauterine growth retardation, minor anomalies, hypoparathyroidism, and growth hormone deficiency. She was the product of a consanguineous mating. Her minor anomalies and delayed development were similar to findings in a previously

Hypocalcemia and hyperphosphatemia are encountered in idiopathic hypoparathyroidism (IHP) and pseudohypoparathyroidism type Ib (PHP1B). In contrast to PHP1B, which is caused by resistance toward parathyroid hormone (PTH), the genetic defects leading to IHP impair production of this important

Preproparathyroid hormone (preproPTH) gene mutation has been proposed as a cause of familial isolated hypoparathyroidism (FIH). We cloned the preproPTH alleles of a patient with autosomal dominant FIH and sequenced the coding regions, 5' flanking regions, and splice junctions. The putatively

Autoimmune polyendocrinopathy-candidiasis-ectodermal dystrophy (APECED) is an inherited disease which may comprise many endocrine and non-endocrine components. GH insufficiency has not been recognised as a classical manifestation of this syndrome. We describe the case of a girl with APECED, who

A preproparathyroid hormone allele from a patient with familial isolated hypoparathyroidism was shown to have a single point mutation in the hydrophobic core of the signal sequence. This mutation, changing a cysteine to an arginine codon at the -8 position of the signal peptide, was associated with

Recently, an arginine-to-cysteine homozygous mutation at position 25 in mature PTH was reported in a Korean patient with hypoparathyroidism. To clarify whether the high bone mass phenotype observed in this patient was related to the hypoparathyroidism itself or to chronic elevation of mutant PTH. A

Somatic and germline mutations in the dual zinc-finger transcription factor GATA3 are associated with breast cancers expressing the estrogen receptor (ER) and the autosomal dominant hypoparathyroidism-deafness-renal dysplasia syndrome, respectively. To elucidate the role of GATA3 in breast