A tissue culture study was undertaken to determine if human non-functioning pituitary tumours secrete polypeptide anterior pituitary hormones in vitro and to study the spectrum of hormone release by functioning pituitary neoplasms. Fragments from 48 human pituitary tumours (from patients -2 with Cushing's disease, 1 with Nelson's syndrome, 5 with amenorrhoea-galactorrhoea, 10 with acromegaly and 30 with non-functioning pituitary tumours) and three normal human anterior pituitary glands (controls) were placed in tissue culture immediately after surgery. The in vitro release of human growth hormone (HGH), prolactin (Prl), thyrotrophin (TSH), adrenocorticotrophin (ACTH), luteinizing hormone (LH) and follicle stimulating hormone (FSH) were measured by radioimmunoassays at the end of one week in culture. Clinical and pathological data were compared to hormone release patterns.
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