PMID- 8102033 OWN - NLM STAT- MEDLINE DCOM- 19930902 LR - 20181113 IS - 0002-9440 (Print) IS - 1525-2191 (Electronic) IS - 0002-9440 (Linking) VI - 143 IP - 2 DP - 1993 Aug TI - Proliferation of endothelial component of parathyroid gland in multiple endocrine neoplasia type 1. Potential relationship with a mitogenic factor. PG - 612-7 AB - The basic fibroblast growth factor-like mitogen detected in the plasma of patients with the multiple endocrine neoplasia type 1 (MEN-1) syndrome was found to have a specific mitogenic effect on parathyroid endothelial cells in vitro. To investigate its pathogenic role in humans, the endothelial component of parathyroid glands was evaluated by ultrastructural morphometry in six MEN-1 patients. The results were compared with those found in six patients with uremic hyperparathyroidism (UHPT) and in three subjects with histologically normal glands. Plasma mitogenic activity was found in all MEN-1 patients but not in those with UHPT or in normal subjects. All morphometric parameters investigated (fractional volume and nuclear density of capillary endothelial cells, volume fraction and number per unit area of capillaries) showed 1.5- to 2-fold higher values in patients with MEN-1 than in those with UHPT (P < 0.05). In contrast, no difference was found between MEN-1 cases and normal subjects. Quantitative evaluation of parathyroid pericytes yielded results similar to those of endothelial cells. These data indicate that the proliferation of parathyroid cells in MEN-1 patients is accompanied by parallel increase in the associated endothelial component that does not occur in patients with UHPT and may support the hypothesis of an in vivo role of the MEN-1 mitogen factor on the endothelial component of parathyroid glands in MEN-1 patients. FAU - D'Adda, T AU - D'Adda T AD - Institutes of Pathological Anatomy, University of Parma, Italy. FAU - Amorosi, A AU - Amorosi A FAU - Bussolati, G AU - Bussolati G FAU - Brandi, M L AU - Brandi ML FAU - Bordi, C AU - Bordi C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Am J Pathol JT - The American journal of pathology JID - 0370502 RN - 0 (Blood Proteins) RN - 103107-01-3 (Fibroblast Growth Factor 2) SB - IM MH - Adult MH - Aged MH - Animals MH - Blood Proteins/pharmacology MH - Cattle MH - Cell Division MH - Cells, Cultured/drug effects MH - Endothelium, Vascular/*ultrastructure MH - Female MH - Fibroblast Growth Factor 2/*pharmacology MH - Humans MH - Hyperparathyroidism, Secondary/blood MH - Male MH - Middle Aged MH - Multiple Endocrine Neoplasia/blood/immunology/*ultrastructure MH - Parathyroid Glands/*ultrastructure MH - Uremia/blood PMC - PMC1887034 EDAT- 1993/08/01 00:00 MHDA- 1993/08/01 00:01 PMCR- 1994/02/01 CRDT- 1993/08/01 00:00 PHST- 1993/08/01 00:00 [pubmed] PHST- 1993/08/01 00:01 [medline] PHST- 1993/08/01 00:00 [entrez] PHST- 1994/02/01 00:00 [pmc-release] PST - ppublish SO - Am J Pathol. 1993 Aug;143(2):612-7.