c-peptide and Testicular-Diseases

We describe five patients with Wolfram syndrome (diabetes insipidus, diabetes mellitus, optic atrophy and deafness). Three of the patients appear to have had very gradual onset of diabetes mellitus at an early age yet all patients when tested for C-peptide response to glucagon were severely deficient. All patients are registered blind from primary optic atrophy, two have severe hearing difficulties and three high tone sensorineural hearing loss on audiometry. Four patients have cranial diabetes insipidus which in two cases is partial and of gradual onset and was attributed to poor control of the diabetes mellitus. In one case treatment of the insipidus relieved enuresis. All five patients have evidence of dilatation of the urinary tract and one patient is managed in the long-term by self-catheterisation which has resulted in one episode of bacteraemia. One patient has marked testicular atrophy and investigation reveals this to be due to primary hypogonadism and not to hypothalamic-pituitary dysfunction. One female patient had her menarche delayed until the age of 19 years but has subsequently had the only successful pregnancy in a patient with this syndrome of which we are aware.

Topics: Adolescent; Adult; Audiometry; Blindness; C-Peptide; Diabetes Insipidus; Female; Humans; Long-Term Care; Male; Menarche; Pregnancy; Puberty; Testicular Diseases; Urinary Catheterization; Urography; Wolfram Syndrome