PMID- 8098714 OWN - NLM STAT- MEDLINE DCOM- 19930623 LR - 20220408 IS - 0021-972X (Print) IS - 0021-972X (Linking) VI - 76 IP - 5 DP - 1993 May TI - Increased basic fibroblast growth factor in plasma from multiple endocrine neoplasia type 1: relation to pituitary tumor. PG - 1182-7 AB - Multiple endocrine neoplasia type 1 (MEN1) is an autosomal dominant disorder characterized by tumors of the parathyroids, pancreatic islets, and anterior pituitary. We previously reported a basic fibroblast growth factor (bFGF)-like substance in the plasma of subjects with MEN1. In the present study we used a novel sensitive specific 2-site immunoradiometric assay to test for bFGF in plasma. The assay employs immobilized affinity-purified N-terminal-specific anti-bFGF antibodies (antigen capture) and high affinity binding to radioiodinated heparin. bFGF-like immunoreactivity was undetectable (< 0.2 ng/mL) in normal subjects and in most unaffected relatives of MEN1 subjects. We found detectable bFGF ranging from 0.24-1.28 ng/mL in 21 of 50 subjects with MEN1. Seven of 8 MEN1 subjects with untreated pituitary tumors had detectable plasma bFGF-like immunoreactivity. Plasma bFGF-like immunoreactivity decreased after surgery for pituitary tumor in 4 patients and after initiation of bromocryptine therapy in 4 patients. bFGF was increased in the plasma of several subjects with sporadic endocrine disorders, including 3 with untreated or persistent acromegaly. We conclude that pituitary tumor is a possible source of high circulating bFGF immunoreactivity in MEN1 plasma. FAU - Zimering, M B AU - Zimering MB AD - Metabolic Diseases Branch, National Institutes of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland 20892. FAU - Katsumata, N AU - Katsumata N FAU - Sato, Y AU - Sato Y FAU - Brandi, M L AU - Brandi ML FAU - Aurbach, G D AU - Aurbach GD FAU - Marx, S J AU - Marx SJ FAU - Friesen, H G AU - Friesen HG LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 RN - 103107-01-3 (Fibroblast Growth Factor 2) SB - IM MH - Adult MH - Aged MH - Endocrine Gland Neoplasms/blood MH - Endocrine System Diseases/blood MH - Female MH - Fibroblast Growth Factor 2/*blood MH - Humans MH - Immunoradiometric Assay MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia/*blood MH - Pituitary Neoplasms/*blood/therapy EDAT- 1993/05/01 00:00 MHDA- 1993/05/01 00:01 CRDT- 1993/05/01 00:00 PHST- 1993/05/01 00:00 [pubmed] PHST- 1993/05/01 00:01 [medline] PHST- 1993/05/01 00:00 [entrez] AID - 10.1210/jcem.76.5.8098714 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 1993 May;76(5):1182-7. doi: 10.1210/jcem.76.5.8098714.