title: Flow cytometry analysis of pituitary adenomas.
abstract: Using flow cytometry, DNA content and index, and/or proliferative capacity (measuring proliferating cell nuclear antigen PCNA) in operated pituitary tumors, control pituitaries obtained at necropsy, and experimental pituitary hyperplasia induced in rats were analyzed. Simultaneous measurement of cell ploidy and proliferation differentiated normal pituitary (diploid DNA index and negative PCNA) from pituitary hyperplasia (diploid DNA index with intensely positive PCNA, between 30 and 72% of cells). In the tumors 83% (19/ 23) were positive for PCNA (between 3 and 84%) and 73% (17/23) aneuploid; only 1 tumor was diploid and negative for PCNA.
  
  
  CONCLUSIONS
  Differentiation between normal and abnormal (neoplastic or hyperplastic) pituitary is possible by flow cytometry, but in the adenomas no correlation with postoperative clinical outcome was observed.
authors.affiliation: Department of Endocrinology, Hospital de la Santa Creu i Sant Pau, Autonomous University of Barcelona, Spain.
authors.forename: O
authors.initials: O
authors.lastname: Fornas
authors.forename: M E
authors.initials: ME
authors.lastname: Mato
authors.forename: M
authors.initials: M
authors.lastname: Viader
authors.forename: B
authors.initials: B
authors.lastname: Oliver
authors.forename: P
authors.initials: P
authors.lastname: Tresserres
authors.forename: F
authors.initials: F
authors.lastname: Bartumeus
authors.forename: D
authors.initials: D
authors.lastname: Tugues
authors.forename: J
authors.initials: J
authors.lastname: Pétriz
authors.forename: X
authors.initials: X
authors.lastname: Matías-Guiu
authors.forename: S M
authors.initials: SM
authors.lastname: Webb
mesh_terms: D000236:Adenoma / Q000139:chemically induced / Q000276:immunology / Q000473:pathology*; D000328:Adult; D000368:Aged; D000818:Animals; D002455:Cell Division / Q000276:immunology; D004273:DNA, Neoplasm / Q000032:analysis; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D010908:Pituitary Hormones, Anterior / Q000032:analysis / Q000276:immunology; D010911:Pituitary Neoplasms / Q000139:chemically induced / Q000276:immunology / Q000473:pathology*; D011003:Ploidies; D018809:Proliferating Cell Nuclear Antigen / Q000032:analysis* / Q000276:immunology; D051381:Rats
chemical_list: D004273:DNA, Neoplasm; D010908:Pituitary Hormones, Anterior; D018809:Proliferating Cell Nuclear Antigen